JPH11199014A - Safety device for moving shelf installation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the safety of a person in the case of the occurrence of an earthquake in the state of the person existing in a passage of moving shelves and impart base isolating function to the moving shelves. SOLUTION: A long-sized braking member 8 is disposed along a rail in a state of being movable by suitable dimension in the longitudinal direction, and the movement of the braking member 8 is supported by a spring. The braking member 8 is provided with a large number of engaging holes 9 formed at a pitch P considerably smaller than the spacing of working space. A lower part of each moving shelf is provided with a locking member 26 removably fitted into the engaging hole 9. Upon the occurrence of an earthquake, the locking member 26 is lowered by an electromagnetic solenoid, and a space between the moving shelves 3 on both sides of the working space is not excessively narrowed, so that the safety of a person can be ensured. Since each moving shelf 3 can be moved relatively to a floor, base isolating function is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile shelf facility for storing various articles such as books and files, which secures the safety of users in the event of an earthquake and improves the seismic isolation function of the mobile shelf. The present invention relates to a safety device to be operated.

[0002]

2. Description of the Related Art Mobile shelf equipment is intended to store a large amount of articles in a limited space. Generally, a large number of mobile shelves are mounted on rails laid between a pair of fixed shelves. It is configured so that it can move freely by a certain dimension. And, in general, the storage sections of both fixed shelves and each moving shelf are open toward the moving passage of the moving shelf, and by moving a part or all of each moving shelf,
At the front of the target mobile shelf or fixed shelf, a work space is set so that the worker can stand up and take out work.

In some equipment, a plurality of work spaces can be set up in one facility so that articles can be taken in and out of a plurality of places at different moving paths at the same time. There are two types of moving shelves: a manual type and an electric type in which wheels are driven by a motor. There are those that rotate and move the handle of the expression. In the former case,
Since the wheels of the movable shelves are all free wheels, if the floor sways in the same direction as the rails during an earthquake, each movable shelf will swing freely by receiving energy from the floor (by providing locking means). If not).

On the other hand, in the case where the handle is moved by rotating the handle, an interlocking mechanism including gears and the like functions as a lock means for the wheels when the steering wheel is stopped.
In the case of the electric type, the motor functions as a locking means for the driving wheels in the stopped state, but when the floor surface shakes in the longitudinal direction of the rail during an earthquake, the driving wheels are locked to the moving shelf. While sliding relative to the rail as it is, the frictional resistance between the rail and the drive wheel will cause the energy of the earthquake to be applied to the moving shelf, so if an earthquake of a certain magnitude or more occurs, Each moving shelf will swing on the rail.

[0005] That is, when an earthquake of a certain magnitude or more occurs, regardless of whether it is a manual type or an electric type, each movable shelf swings by receiving the energy of the earthquake. For this reason, if an earthquake occurs while a person is working on a moving passage, the moving shelf group moves on the rails, and the person standing on the passage can move between adjacent moving shelves or move. There is a risk of being caught between the shelf and the fixed shelf. In this case, the moving shelves often oscillate while colliding or moving away from each other. Therefore, when the moving shelves resonate with the shaking of the earthquake and vibrate violently, the moving shelves move adjacent to each other across a person. There is a risk that the shelf will repeatedly approach and leave many times, causing a severe impact to humans. Therefore, measures to ensure human safety in the event of an earthquake were requested.

Further, if the movable shelf group vibrates violently due to resonance with an earthquake or the like, the stored articles jump out or, in extreme cases, the movable shelf falls over. Earthquake measures) were also requested.
As a safety measure for mobile shelf equipment against such earthquakes,
For example, Japanese Utility Model Publication No. 5-27068 describes that a spring for absorbing the traveling energy of the movable shelf is provided at the end of the movable shelf facility. Japanese Utility Model Publication No. Hei 7-26535 proposes a configuration in which a rail is movable in a predetermined range in a longitudinal direction thereof.

[0007]

SUMMARY OF THE INVENTION Both of these prior arts are:
When the mobile shelf moves relative to the floor due to an earthquake, the impact when the mobile shelf collides with a fixed shelf or a wall can be suppressed,
There is a fatal problem that it is not possible to secure the safety of a person standing in a moving passage because each moving shelf sways freely. In addition, when the rail is configured to be movable in the longitudinal direction as disclosed in Japanese Utility Model Publication No. 7-26535, there is a problem in that the rail may move in normal times and it may not be possible to secure accurate traveling of the movable shelf. is there.

As a means for solving such a problem, the applicant of the present invention disclosed in Japanese Patent Application No. 8-317613 disclosed in Japanese Patent Application No. 8-317613 such that a frame fixed to a floor surface for mounting a rail, such as an engaging hole or the like opened upward. While a large number of joints are formed at appropriate intervals along the longitudinal direction, each moving shelf is provided with a regulating member that descends downward by an actuator such as an electromagnetic solenoid,
It has been proposed that the restricting member be engaged with the engaging portion in the event of an earthquake to make the movable shelf immovable with respect to the frame.

In this prior application, if the interval between the engaging portions of the frame is set to a short dimension of, for example, about 10 cm, when a person is working in the working space provided in the moving passage of the moving shelf. Even if an earthquake occurs, the moving shelves adjacent to each other will move by a small distance and the distance between them will remain unchanged, preventing people from being caught between shelves Safety can be ensured.

An object of the present invention is to further develop this prior application and to provide a mobile shelf facility with improved earthquake countermeasures.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides at least one moving shelf provided on a rail laid on the floor and provided with wheels rolling on the rail. In a movable shelf facility arranged such that a work space in which a person can stand in the traveling passage is made vacant when the movable shelf is moved, `` a long brake extending in the same direction as the rail, below, above, or both of the movable shelf. The members are arranged in a state where they can be moved by an appropriate dimension along the longitudinal direction, and a large number of engaging portions such as engaging holes are provided in the braking member along the longitudinal direction. At the opposing portion, a locking member capable of holding the movable shelf and the braking member in a state in which the moving shelf and the braking member hardly move relatively in the horizontal direction by engaging with the engaging portion of the braking member is provided, and furthermore, when an earthquake occurs, Engagement of braking member And the locking member has a configuration of providing the actuating means capable of relative movement between them brake member and the engagement member such that in a state to engage "with.

In this case, the movable shelf may be of an electric type as described in claim 3 or a manual type. Further, in general, there are many configurations in which a pair of fixed shelves are provided at both ends of a large number of moving shelf groups,
The entire facility may be constituted by a moving shelf. Further, the moving shelf equipment may have a configuration in which a number of moving shelves are arranged in parallel, and a storage space of each moving shelf may be opened in the moving direction, or the moving shelf may be arranged in front of a fixed shelf group arranged in series. The present invention can also be applied to a type in which one or more rows of movable shelves that move along the front surface of the fixed shelf group are arranged, and each movable shelf is opened in a direction orthogonal to the moving direction.

In order to engage the braking member with the locking member, only the locking member may be operated, or the braking member may be moved laterally (or vertically) toward the locking member. good. As means for operating these locking members or braking members,
Using a dynamic actuator such as an electromagnetic solenoid or an electromagnetic cylinder, the actuator may be actuated by a signal from a seismic sensor (earthquake sensor) installed indoors or outdoors, or the energy of the earthquake may be transmitted mechanically. A seismic mechanism (trigger mechanism) that converts to motion may be used.

Further, when the operating means is operated by external power such as an electromagnetic solenoid or the like, the operating means is not limited to being operated only when an earthquake occurs. The hole may be held so that it can be engaged with the hole (this function also functions as a safety device in normal times). Further, as the buffer means described in claim 2, various means such as a spring, a gas spring, rubber (elastic body), and a hydraulic damper can be used.

[0015]

In this configuration, since the rails may be fixed, there is no hindrance to the traveling of the movable shelf in normal times. Then, if an earthquake occurs while people are entering the aisle of the moving shelf and working, the moving shelf located next to the person will
After moving at most by the distance between the engaging portions of the braking member, the locking member and the engaging portion are engaged with each other, and the distance between the shelves located on both sides of the person is reduced by a certain distance or more. It is kept in a state.

In this case, the situation where the shelves on both sides of the person are both moving shelves and the two moving shelves move so as to approach each other due to the earthquake is most dangerous to the person. On the other hand, when a person enters or removes an article from the moving shelf, the width of the work space (the interval between adjacent shelves).
Has a size several times the width of the body (otherwise it is not possible to raise and lower the hands to get in and out), and even if the width of the work space is narrowed to some extent, the body will not be pinched by the shelves it can.

Therefore, by setting the interval between the engaging portions provided on the regulating member to a short dimension of, for example, about 10 cm, even if adjacent movable shelves approach each other, the distance between the two movable shelves can be reduced. It is possible to maintain an interval that does not allow people to be caught, thereby ensuring the safety of people in the event of an earthquake without impairing the function of moving the shelves in normal times. It is conceivable, however, that the kinetic energy of the moving shelf is much greater than the article, so it is most important to prevent a person from being pinched between shelves).

By the way, in order to suppress the shaking of the moving shelf (ie, to isolate the seismic), it is necessary to apply as little seismic energy to the moving shelf as possible. It is necessary to be able to move relatively. In this regard, in the case of the prior application, when the engaging portion of the moving shelf is engaged with the engaging portion of the frame, the moving shelf swings together with the floor surface (the clearance between the engaging portion and the regulating member). Although the movable shelf can swing freely within the range, the seismic isolation function is weak.

On the other hand, according to the present invention, since the braking member can move in the longitudinal direction, the movable shelf group can move relative to the floor as a whole while maintaining a state in which no person is pinched. In addition, regardless of whether or not there is a person in the moving path, the moving shelf can move relative to the floor together with the braking member during an earthquake, thereby suppressing the energy of the earthquake shaking from being applied to the moving shelf. Yes (ie mobile shelves can be isolated).

Therefore, according to the present invention, the mobile shelf can be provided with a seismic isolation function to suppress the swing of the mobile shelf. In this case, when configured as in claim 2, since the relative movement between the movable shelf group and the floor surface can be buffered, the movable shelf can be prevented or remarkably suppressed from vibrating violently due to the vibration of the earthquake and seismically isolated. Function can be improved. By the way, when an earthquake occurs while the movable shelf runs on the rail without resistance, the movable shelf may resonate with the shaking of the earthquake and vibrate violently. On the other hand, in the case of an electric moving shelf, it is considered that a motor should be used as a resistor. However, since the motor acts as a large resistance to sudden loads,
If the wheels are locked too much, proper relative movement between the movable shelf and the floor (rail) may be hindered, and the movable shelf may be in a flattened state, causing a fall.

[0021] In this respect, with the structure as claimed in claim 3, since the speed reducer can act as an appropriate resistance to the movement of the moving shelf, it is possible to move the moving shelf relative to the floor without causing resonance. As a result, there is an advantage that the seismic isolation function can be further improved. According to the third aspect, since both the electromagnetic clutch and the electromagnetic solenoid operate by turning off the power, there is an advantage that even if the power is cut off due to an earthquake, the function can be properly performed and the safety function can be secured.

[0022]

Next, embodiments of the present invention will be described with reference to the drawings. (1) First Embodiment (FIGS. 1 to 15). FIG. 1 is a partial perspective view of a moving shelf facility 1, and FIG. 2 is a schematic side view of the whole. As shown in both figures, the moving shelf equipment 1 includes a pair of fixed shelves 2 located at both ends of the equipment 1 and two fixed shelves 2.
And a large number of movable shelves 3 arranged between them, and each movable shelf 3 can freely move on three (or two or more) rails 4 by a predetermined distance. The storage space of each of the shelves 2 and 3 is open toward the moving passage of the moving shelf 3. The storage space of the movable shelf 3 may be opened on one side only, or may be opened on both sides.

The movable shelves 3 of the present embodiment are electrically driven, and an operation panel 5 is provided on the outer surface of each movable shelf 3. The operation panel 5 is provided with a passage selection switch, an execution switch, a stop switch, a reset switch, and the like.
Selection of passage with these switches (right or left of moving shelf 3)
And operations such as execution and emergency stop. When the move execution button is pressed, a part or all of the movable shelves 3 move, and as shown in FIG. The width of the working space A is generally 90
It is set to about 100cm.

Although not shown, the movable shelf 3 (or the fixed shelf 2) is provided with a buffer spacer such as rubber or a spring for buffering a collision with the adjacent shelves 2, 3. Therefore, as shown in both figures, a very small gap is left between the adjacent shelves 2 and 3 with the movable shelves 3 packed. Hereinafter, details of each part will be described. . Rail Mounting Structure FIGS. 3 to 5 clearly show the rail mounting structure.

FIG. 3 is a perspective view showing the mounting structure of the rail 4, FIG. 4 is an exploded perspective view of FIG. 3 viewed from the direction of arrow IV, FIG. 5 (A) is a plan view of the end, FIG. 3A is a sectional view taken along the line BB of FIG. 3A. As shown in these figures, a frame (channel material) 6 having a C-shaped upward opening section is fixed to the floor F with an anchor or the like. , A rail 4 having a rectangular cross section is fastened. End members 7 that open toward the frame 6 are fixed to both sides of the frame 6. In addition,
Both fixed shelves 2 are fastened to the end member 7 and the frame 6 by bolts.

Although the figure shows a state in which the frame 6 is directly fixed to the floor F for simplification, it is desirable that the frame 6 be fixed via a spacer plate or a reinforcing plate. Two of the three frames 6 located at the end of the passage
The brake member 8 described in the claims is fitted in the space between the one side plate and the rail 4. The braking member 8 according to the present embodiment is formed in a gutter shape having a downward opening in cross section (another cross section may be used), and is fitted into the frame 6 in such a manner that it cannot be displaced in the width direction and can be moved to some extent in the longitudinal direction. I have. As an example of the engaging portion described in the claims, the braking member 8 is provided with rectangular engaging holes 9 that are vertically opened at regular intervals P along the longitudinal direction. The formation interval of the engagement holes 9 may be, for example, about 5 to 10 cm.

The braking member 8 is set to have a length shorter than that of the frame 6, and springs (compression) for damping the movement of the braking member 8 are provided at both ends of the frame 6 as an example of the buffer means described in the claims. (Spring) 10 is fitted. A rod-shaped spring support (restriction rod) 11 is fitted in the spring 10, and the spring support
The flange 11 has a flange 11a which contacts the end of the braking member 8. The spring receiver 11a is for preventing the spring 10 from jumping out and for regulating the compression dimension of the spring 10.

As shown in FIG. 5, the end of the frame 6 is covered with a cover 12 for preventing the spring 10 from jumping out. Note that the end member 7 does not necessarily need to be provided, and the spring 10 is bent by bending both ends of the frame 6.
May be formed. As can be easily understood from the above description, the braking member 8 is provided with the spring support 11.
It can move by twice the dimension S of the distance between the end member 7. The length of the spring 10 is set so as to be hidden below the fixed shelf 2. Note that the spring 10 is normally
In other words, in the range of the earthquake of the assumed strength, the braking member 8 has a strength such that it moves only a dimension shorter than its allowable movement range. May be set. Alternatively, since the weight of the moving shelf 3 is large and its inertial energy is large,
The main function is to return the braking member 8,
May be set to such a strength as to have a secondary function.

When the total length of the mobile shelf equipment is longer than a certain length, it is preferable that both the frame 6 and the braking member 8 are divided into a plurality of pieces having a length of, for example, about 1 to 3 m and added. In this case, the braking member 8 is undetachably held in the frame 6 while being pressed by the spring 10 from both ends.
It is not necessary to connect the divided parts, but they may be merely connected to each other (of course, they may be connected).

[0030] Driving Structure of Moving Shelf 3 Next, a driving structure of the moving shelf 3 will be described with reference to FIGS. FIG. 6 is a partial plan view of the movable shelf 3, and FIG.
FIG. VII-VII sectional view. As partially shown in FIG. 6, the movable shelf 3 is an underframe formed in a rectangular shape in plan view from a steel die or the like.
And a pair of horizontal rails 15 arranged so as to sandwich each of the rails 4 in a plan view, and fixedly secured to portions of the underframe 14 above the respective rails 4.
A pair of front and rear wheels 16, 17 for each pair of 15
It is rotatably mounted by 16a and 17a.

In this case, the wheel 16 located on the left side of the drawing is a free wheel, and the wheel 17 located on the right side of the drawing is a driving wheel. The left and right drive wheels are mounted on one axle 17a. An example of the arrangement of the drive wheels 17 and the free wheels 16 of each movable shelf 3 will be described later. A drive unit 21 including a motor 18, an electromagnetic clutch 19, and a gear type speed reducer 20 for driving the drive wheels 17 is mounted on a side surface of an auxiliary beam 15 a provided near the horizontal beam 15. In this case, an electromagnetic clutch 19 is interposed between the motor 18 and the speed reducer 20. The electromagnetic clutch 19 is configured to connect power by energization and to cut off power by interruption of energization.

A small-diameter driving gear 22 protruding from the speed reducer 20
Is engaged with a large-diameter driven gear 23 attached to the axle 17a of the drive wheel 17. Therefore, when the motor 18 is rotated forward and backward with the electromagnetic clutch 19 connected, the power of the motor 18 is transmitted to the drive wheels 17 and the movable shelf 3 moves back and forth. The electromagnetic clutch 19 is connected to a seismic sensor (seismic means) 24 installed at an appropriate location such as a building wall. When the seismic sensor 24 detects an earthquake, a signal is sent to the electromagnetic clutch 20. , The electromagnetic clutch 20 is set to be disengaged. In addition,
When the moving shelf 3 is stopped, the electromagnetic clutch 20 is off.

The electromagnetic clutch 19 is not necessary in the case of a simple manual moving shelf system in which a handle is pushed and pulled manually. Also, in the case of a manually-operated moving shelf equipment in which the handle is rotated to move the electromagnetic clutch is not particularly necessary when the reduction ratio of the drive system gear is relatively small, but when the reduction ratio is large, the wheel is not used. It is preferable to provide the electromagnetic clutch 20 in the speed reduction system in order to avoid locking of the motor.

[0034] Description of Locking Member and Actuating Means Next, a locking member 26 for regulating the movement of the movable shelf 3 in cooperation with the braking member 8 in the event of an earthquake and the operating means thereof will be described with reference to FIGS.
Explanation will be given based on 11. 8 is a sectional view taken along line VIII-VIII of FIG. 6, FIG. 9 is a view taken along IX-IX of FIG. 8, FIG. 10 is a schematic plan view of FIG. 9, and FIG.

For example, as can be easily understood from FIG.
The locking member 26 is formed in the shape of a vertically elongated rectangular bar (may be another cross-sectional shape such as a columnar shape or a block shape), and is disposed directly above the braking member 8. A stopper 26 is provided at the lower end of the stopper 26 to be fitted into and disengaged from above the engagement hole 9 of the braking member 8.
a. An electromagnetic solenoid 27 as an example of an actuating means (which may be referred to as an actuator or a driving means) of the locking member 26 is fixed to a side surface of one of the horizontal rails 15 via a spacer 28. This electromagnetic solenoid 27
A plunger (movable iron core) 29 having a shape fitting into the upper part of the locking member 26 protrudes downward. The upper part of the locking member 26 is attached to this plunger 29 by a support pin 30.

The plunger 29 of the electromagnetic solenoid 27 has a stopper 31 projecting upward to prevent it from coming off.
Between the lower surfaces of the pair of horizontal rails 15 on the movable shelf 3, a guide member 32 into which the locking member 26 is vertically movably fitted is fixed. A plurality of guide members 32 may be provided above and below. The locking member 26 is made of a strong and heavy material such as steel,
Therefore, the power to the electromagnetic solenoid 27 is cut off and the plunger
When 29 is lowered, locking member 26 is also lowered by its own weight (it may be urged downward by a spring).

When power is supplied to the electromagnetic solenoid 27, the plunger
29 rises and the locking member 26 also rises. When the movable shelf 3 is stopped, the power supply to the electromagnetic solenoid 27 is shut off, and therefore, the locking members 26 of each movable shelf 3 are lowered (the electromagnetic solenoid 27 is always kept ON in normal times). Is also good). When the locking member 26 is lowered, the engagement hole 9
Are located on each other, the relative movement between the movable shelf 3 and the braking member 8 is restricted. Further, when the locking member 26 is lowered in a state where the engaging hole 9 is not located immediately below, the locking member 26 comes into contact with the upper surface of the braking member 8 and stops, and then the relative movement between the movable shelf 3 and the braking member 8 is stopped. As a result, the locking member 26 fits into the engagement hole 9.

For example, as shown in FIG. 8, the width dimension W1 of the locking member 26 is considerably smaller (about half) than the width dimension W2 of the engaging hole 9, so that the locking member 26 is Can move relative to the moving shelf 3 and the braking member 8 by a small dimension in the horizontal direction (that is, there is some clearance). The support pins 30 protrude outside the front and rear of the electromagnetic solenoid 27. As shown in FIG. 9 and FIG.
A plate-like lifting member 33 slidable in a direction crossing the axis is fitted, and a V-shaped recess 34 is formed in the lifting member 33 toward the support pin 30.

The lifting member 33 is manually engaged with the locking member 26.
Although not shown, an operation unit for pulling the lifting member 33 is provided outside the movable shelf 3. Further, the lifting member 33 is provided with a spring 35 (see FIG. 4) so that the center of the recess 34 is located below the support pin 30.
11). When the lifting member 33 is pulled in the longitudinal direction from the outside of the moving shelf 3 in a state where the locking member 26 is lowered, the locking member 26 moves upward by the guiding action of the inclined surface of the recess 34 in the lifting member 33. Then, the engagement between the braking member 8 and the locking member 26 is released. Therefore,
Even if a power failure occurs after the earthquake and the electromagnetic solenoid 27 cannot be operated, the movable shelf 3 can be returned to a movable state by manually operating the lifting member 33.

As shown in FIG. 10, the locking member 26 is provided at a position shifted from the center line O of the movable shelf 3 by a small dimension E in the longitudinal direction of the rail 4. This displacement dimension E is considerably smaller than the interval dimension P of the engagement holes 9. The locking member 26 and the electromagnetic solenoid 27 may be provided one by one on the moving shelf 3, but from the viewpoint of balance when stopping the moving shelf 3 in the event of an earthquake, the Located 2
It is preferable that the braking member 8 is provided on the book frame 6, and the locking member 26 and the electromagnetic solenoid 27 are provided on both left and right ends of each moving shelf 3. When only one unit is provided, it is preferable to provide the braking member 8 on the center frame 6 and provide the locking member 26 and the like at the center of each moving shelf 3.

[0041] Next, a basic operation of the mobile shelf equipment 1 when an earthquake occurs will be described. FIG. 12 schematically shows a state in which a work space A is opened between two adjacent movable shelves 3, and in this state, the movable shelf groups on both sides of the work space A are in close contact with each other. It is in a state. In this state, since each movable shelf 3 is stopped, the locking member 26 of each movable shelf 3 is lowered.

When an earthquake occurs in this state, the movement of the movable shelves 3 on both sides of the work space A becomes a problem from the viewpoint of ensuring the safety of persons in the moving passage. When the engaging hole 9 of the braking member 8 is located immediately below the locking member 26 of the moving shelf 3, the locking member 26 fits into the locking member 26, and the moving shelf 3 is In this state, there is almost no relative movement (only the clearance between the locking member 26 and the engagement hole 9 can be relatively moved).

However, it is rare that the engaging hole 9 is located directly below the locking member 26. In most cases, the lowered locking member 26 is placed on the upper surface of the braking member 8, and As the shelves 3 move closer to each other as indicated by the alternate long and short dash line and the solid arrow C in the drawing (A), the locking members 26 are fitted into the engagement holes 9. The manner in which each of the movable shelves 3 swings during an earthquake is not constant, and all the movable shelves 3 may swing in the same direction, or may randomly swing. When each of the movable shelves 3 swings in the same direction, at the time of the forward movement, the locking member 26 of one of the two movable shelves 3 sandwiching the working space is engaged with the engaging hole 9 first. Then, at the time of the backward movement, the locking member 26 of the other movable shelf 3 will engage with the engagement hole 9, and if it swings randomly,
The two moving shelves 3 may move in the direction of the solid arrow C at the same time. In any case, the two moving shelves 3 sandwiching the work space A are kept in a state in which they do not move any closer after moving closer to a certain size.

The maximum distance at which the two moving shelves 3 move closer to each other (in other words, the maximum dimension in which the space between the work spaces A is reduced) is the distance P between the engaging holes 9 in the braking member 8 and the locking member 26. Since the clearance P between the engaging holes 9 and the clearance between the engaging members 26 and the engaging holes 9 are controlled to be sufficiently smaller than the width of the working space A, the clearance P is regulated by the clearance between the engaging holes 9. By setting, the safety of the person in the work space A of the passage can be ensured.

The movable shelf 3 excluding the movable shelf 3 located on both sides of the work space A has the engaging members 26 engaged when the engaging holes 9 are located immediately below the engaging members 26. By fitting into the hole 9, the relative movement with the braking member 8 is regulated. Further, by moving the movable shelves 3 located on both sides of the work space A by the dimension L in the state shown by the dashed line in the drawing (A), the movable shelves 3 located on both sides of the work space A are removed. Each of the movable shelves 3 swings by a certain dimension, and the swinging movement may cause the locking members 26 to move.
Are fitted in the engagement holes 9, and the relative movement with respect to the braking member 8 is restricted.

Depending on the moving shelf 3, the locking member 26 of the other moving shelf 3 does not fit into the engaging hole 9 of the braking member 8,
Although it is possible to move freely on the rail 4, the moving distance is restricted by the two moving shelves 3 and both fixed shelves 2 sandwiching the work space A, so there is a concern about human safety. There is no. Each of the movable shelves 3 swings together with the braking member 8 by a small dimension as a whole between the fixed shelves 2, but since the movement of the braking member 8 is buffered by the spring 10, the movable shelf group Is prevented from resonating with the shaking of the earthquake and a strong impact is exerted on the fixed shelf 2 (ie, seismic isolation), and as a result, the danger of the movable shelf 3 from tipping over, breakage or deformation is significantly reduced. In addition to being able to, the scattering of articles can be suppressed. Even when the spring 10 is not present, since each movable shelf 3 is allowed to swing horizontally with respect to the floor F by a small dimension, a certain degree of seismic isolation function can be secured.

As described above, in this embodiment,
Even in a normal state, when the movable shelf 3 is stopped, each locking member 26 is lowered, so that the braking member 26 is ready to be fitted into the engagement hole 9 even when an earthquake occurs. . Prevention / suppression of resonance by the reduction gear As described above, since the electromagnetic clutch 19 is provided between the motor 18 and the reduction gear 20, when the electromagnetic clutch 19 is turned off, the gears of the reduction gear 20 Therefore, the movable shelf 3 can prevent or suppress the resonance caused by excessively swaying smoothly without resistance, and can prevent or suppress the falling of the movable shelf 3 (that is, the electromagnetic solenoid 19).
, The motor 18 acts as an excessive load with respect to the swing of the movable shelf 3, so that an appropriate relative movement between the movable shelf 3 and the floor F is obstructed, and the drive wheels 17 Is completely free, the movable shelf 3 swings too much and resonates with the shaking of the earthquake).

The speed reducer 20 is not limited to a gear type, but may be a belt type or a fluid type. Means for imparting an appropriate resistance to the swinging of the moving shelf 3 include, for example, providing a friction member on each moving shelf 3 so as to be able to adhere to and separate from a fixed portion such as a rail 4 or a floor surface. At this time, the friction member may be brought into close contact with a fixed portion such as the rail 4 by an actuator such as an electromagnetic solenoid.

[0049] Description of Another Operation FIG. 13 shows an operation in another usage mode. Among them, FIG. 1A shows a case where the work space A is provided between the movable shelf 3 and the fixed shelf 2 located at the ends, and in this case, at least the work space A is located at the position of the work space A. Since the relative movement with respect to the braking member 8 is suppressed after one movable shelf 3 moves as indicated by the dashed line, human safety is ensured.

On the other hand, FIG.
In this state, there is no human safety problem, but the falling of the movable shelf 3 and the scattering of articles are problems. In this regard, when each of the movable shelves 3 has moved to some extent, the respective locking members 26 are fitted into the engagement holes 9 of the braking member 8 so that each of the movable shelves 3 hardly moves relative to the braking member 8. It is held and in this state, it moves relative to the floor F together with the braking member 8 between the two fixed shelves 2. The movable shelf 3 can move relative to the floor F, and the spring 10 prevents or suppresses resonance, thereby effectively isolating the shelves.

[0051] Description of Other Operations As described above, the locking member 26 of each movable shelf 3 is shifted from the center line of the movable shelf 3 by a small dimension in the moving direction.
In this case, as shown in FIG. 14, instead of shifting the moving shelves 3 in the same direction in all moving shelves 3, the moving shelves 3 closer to one of the fixed shelves 2 are moved to the moving shelves 3 closer to the other fixed shelves 2. The shifting direction of the stop member 26 is set so as to be substantially alternately different.

With this configuration, when the locking member 26 of one of the moving shelves 3 is fitted into the engagement hole 9 during an earthquake, each movement required for the locking member 26 to be fitted into the engagement hole 9 is performed. Since the amount of movement of the shelves 3 is different for each of the moving shelves 3, the locking members 26 of at least some of the moving shelves 3 excluding the moving shelves 3 on both sides of the work space A are engaged with the engaging holes 9. As a result, it is possible to restrict as many relative movements of the movable shelf 3 and the braking member 8 as possible. Therefore, there is an advantage that the moving shelves 3 can be prevented from violently colliding with each other. Of course, it goes without saying that the locking member 26 may be provided at a position along the center line of each moving shelf 3.

As shown in FIG. 14, when the drive wheels 17 and the free wheels 16 of the movable shelves 3 are alternately arranged along the direction in which the movable shelves 3 are arranged, the movable shelves 3 fall over during an earthquake. Since the directions of self-reliance are alternately different, adjacent moving shelves 3 are in a state of being supported by each other, and there is an advantage that the overturn suppressing function can be improved. In addition, it goes without saying that the free wheels 16 and the drive wheels 17 may be provided in the same state in each of the movable shelves 3.

[0054] Description of Moving Shelf Facility and Control System of Another Embodiment FIG. 15 conceptually shows a moving shelf facility 1 set so that a plurality of work spaces A can be provided. It goes without saying that the present invention can be applied to such equipment. next,
The control system will be described based on FIG.

First, the main power supply is ON unless the power is turned off or a power failure occurs, and power is supplied to each part. As described above, when the movable shelf 3 is stopped, the electromagnetic clutch
The energization of 19 and the electromagnetic solenoid 27 is shut off. When a person presses a selection switch and a start switch on the operation panel 5 of a desired moving shelf 3, the electromagnetic solenoid 27, the electromagnetic clutch 19, and the motor 18 in all or some of the moving shelves 3 are energized based on the cart moving signal. Then, the movable shelves 3 are moved, and a work space A is vacated in front of the desired shelves 2,3.

When an earthquake occurs while the movable shelf 3 is moving and the seismic sensor 24 detects shaking, energization to the motor 18, the electromagnetic clutch 19 and the electromagnetic solenoid 27 is simultaneously cut off based on the detection signal. As a result, the locking members 26 of all or some of the movable shelves 3 fit into the engagement holes 9 of the braking member 8.
When the shaking of the movable shelf 3 has stopped after the earthquake has converged, a reset button provided on the operation panel 5 or the like is pressed. Then, the electromagnetic clutch 19 is energized for a short time to release the locking member 26 from the braking member 8, and the braking member 8 is returned to the original state by the spring 10, whereby the moving shelf 3 is also returned to the position before the earthquake. You can return and resume the operation.

(2) Second Embodiment (FIG. 17) FIG. 17 shows a second embodiment in which the frame 6 is another example. That is, in this embodiment, an auxiliary member 37 having an L-shaped cross section is fixed to one side surface of the frame 6, and a braking member similar to that of the first embodiment is provided in a groove-shaped space surrounded by the frame 6 and the auxiliary member 37. 8 and a spring 10 are arranged.

(3) Third Embodiment (FIG. 18) FIG. 18 shows a third embodiment which is another example of the buffer means. Among them, the one shown in FIG. 1A has spring supports 11 inserted from both sides of the spring 10. Further, the one shown in the drawing (B) is such that a pipe-shaped first spring receiver 11b is inserted from one end of a tongue 10, and the other end of the spring 10 is slidably fitted to the first spring receiver 11b. Two spring receivers 11c are inserted. According to the configuration shown in FIG. 4B, the spring 10 can be prevented from jumping out without providing the frame 12 with the cover 12 as shown in FIG.

In the diagram (C), the spring constant of the spring 10 is partially changed by partially changing the winding pitch of the spring 10 (the portion 10 having a large winding pitch).
(a) has a large spring constant (spring force). In the diagram shown in the diagram (D), springs 10b and 10c having different spring constants are separately manufactured, and these are arranged in series. These (C) and
With the configuration as shown in (D), the energy of the earthquake is such that the parts 10a and 10c with small spring constants are mainly compressed in the case of a weak shaking earthquake, and compressed as a whole in the case of a large shaking earthquake. Can be absorbed in two stages.

FIG. 7E is a modification of FIG.
10 is composed of three (or more than four) members 10b, 10c, and 10d fitted in a telescopic manner. In this way, the braking member 8 can be moved without changing the length of the spring 11.
Movement stroke can be increased. 4) Fourth Embodiment (FIG. 19) FIG. 19 shows a fourth embodiment which is another example of the cover 12 for preventing the spring 10 from jumping out. In the drawing (A), the cover 12 is formed in an L-shaped cross section, and the cover 12 is
The vertical piece is arranged so as to overlap the side surface of the rail 4 and this is fastened to the frame 6 by screwing. (Because the cover 12 is below the fixed shelf 2, there is no problem even if the cover 12 overlaps the rail 4. No).

In the figure (B), the cover 12 is formed in a U-shape with a downward opening in cross section, and a spring 10 is held inside the cover. In the diagram (C), the portion of the cover 12 that overlaps the spring 10 in a plan view is formed in an upwardly projecting arc-shaped cross section, and there is an advantage that the spring 10 having a large outer diameter can be attached. (5) Fifth Embodiment (FIGS. 20 and 21) FIGS. 20 to 21 show a fifth embodiment in which the braking member 8 is arranged above the movable shelf 3. FIG. FIG. 20 is a partial front sectional view as seen from a direction orthogonal to the moving direction of the movable shelf 3, and FIG. 21 is a front sectional view of a main part.

In this embodiment, the braking member 8 is arranged so as to extend over each of the movable shelves 3, and the braking member 8 is mounted on the upper surface of each of the moving shelves 3.
A pair of upper and lower guide rollers 39 (a plurality of pairs may be provided) provided at 38 are supported. A groove for fitting the braking member 8 is formed on the outer peripheral surface of the guide roller 39.
The braking member 8 cannot move in the width direction and can move only a certain dimension in the longitudinal direction. The movement of the braking member 8 is buffered by the spring 10. Engagement holes 9 are formed on the upper surface of the braking member 8 at appropriate intervals.

In this embodiment, the braking member 8 is formed in the shape of a U-shape with a horizontal cross section. However, the braking member 8 may have a square pipe shape or an L-shaped cross section. An electromagnetic solenoid 27 having a downward plunger 29 is attached to the bracket 38, and a locking member 26 that can be fitted into the engagement hole 9 by its downward movement is attached to the plunger 29.

In this embodiment, the spring 10 is supported by a wall as an example of a fixing portion. If there is no wall, an appropriate fixing member may be provided. Alternatively, the springs may be supported by fixing members provided on both fixed shelves 2, with the shelves located at both ends of the large number of shelves as fixed shelves. Further, the braking member 8 may be movably supported by a guide member provided on a ceiling surface, a wall surface, or the like.

Also in this embodiment, although not shown, the first
An electromagnetic clutch 19 for disconnecting the power of the motor 18 is provided similarly to the embodiment, and the electromagnetic clutch 19 is set to be disengaged by a signal from the seismic sensor 24. As described above, when the braking member 8 is provided above the movable shelf 3, there is an advantage that the function of preventing the movable shelf 3 from tipping over can be dramatically improved.

(6) Sixth to Eighth Embodiments (FIG. 22) In each of the above embodiments, a compression spring is used as the buffering means. However, as shown in FIG. Alternatively, the braking member 8 may be buffered by the tension spring 10. Also,
A gas spring or a hydraulic damper may be used instead of the spring. In the diagram (B) of FIG. 22, one electromagnetic solenoid 27
7 shows a seventh embodiment in which two locking members 26 are attached (not shown in the drawing, the lifting and lowering of the locking member 26 is guided by a guide member). When a plurality of locking members 26 are provided as in this embodiment, the distance e between the locking members 26
By making the distance P different from that of the engagement hole 9, the locking member 26 can be fitted into the engagement hole 9 by a short swing of the movable shelf 3.

As shown in FIG. 22C as an eighth embodiment, the locking member 26 may be of a rotary type. (7) Ninth and Tenth Embodiments (FIG. 23) In the above embodiments, the locking member 26 is moved, but the braking member 8 may be moved laterally. Figure 23 shows an example.
This shows the ninth embodiment and the tenth embodiment.

In the drawing (A), a locking member 26 is provided on the lower surface of each moving shelf 3 so as to protrude downward.
A braking member 8 having a U-shaped cross section is disposed in a posture that opens toward the locking member 26, and a side plate of the braking member 8 is formed with an elongated hole 40 extending along its longitudinal direction. Further, a rod 41 attached to a plunger of the electromagnetic solenoid 27 is inserted therein. A pair of plates 42 sandwiching the side plate 8a of the braking member 8 is attached to the rod 41, and a first spring 44 for pushing the braking member 8 in the direction of the locking member 26 is fitted.

An engaging groove 43 as an example of an engaging portion is cut out at an appropriate interval in the upper surface plate of the braking member 8. The locking member 26 is movable in a direction orthogonal to the longitudinal direction of the rail 4 as shown by an arrow D, and is urged by the second spring 45 in the direction of the braking member 8. In this diagram (A),
When the moving shelf 3 is stopped or an earthquake occurs, the electromagnetic solenoid 27
Is turned off, the braking member 8 protrudes laterally by the first spring 44, whereby the engaging member 26 and the engaging groove 43 can be fitted. Further, since the rod 41 is fitted in the elongated hole 40, the movement of the braking member 8 in the longitudinal direction is allowed. If the engaging groove 43 does not match the locking member 26 with the braking member 8 protruding, the locking member 26 is pushed by the braking member 8 against the second spring 45 and moves. When the shelf 3 moves and the locking member 26 and the engagement groove 43 match, the locking member 26 is pushed by the second spring 45, and the locking member 26 and the engagement groove 43 are pressed.
43 fits.

In the tenth embodiment shown in FIG.
A roller that urges the braking member 8 with a spring 46 in a direction away from the locking member 26 as indicated by a dotted arrow, and abuts the bracket 31 attached to the rod 41 of the electromagnetic solenoid 27 against the outer surface of the braking member 8. 47 (may be a slider). When the electromagnetic solenoid 27 is turned off, the roller 47 is protruded by a spring built in the electromagnetic solenoid 27,
The braking member 8 advances toward the locking member 26.

The braking member 8 may be moved not only horizontally but also vertically (that is, it may be moved in a direction perpendicular to the longitudinal direction). Needless to say, the lateral movement of the braking member 8 can be applied to the embodiments shown in FIGS. (8) Eleventh Embodiment (FIG. 21) The mobile shelf facility shown in FIG. 21 has a plurality of rows of mobile shelf groups in which a plurality of mobile shelves 3 are directly arranged in front of a fixed shelf 2. As described above, the present invention can also be applied to a moving shelf facility in which the storage space of each of the shelves 2 and 3 is opened in a direction orthogonal to the moving passage.

(9). Others Specific examples of the present invention are not limited to the above examples, and may be embodied in various forms as needed. For example, the engaging member is not limited to the engaging hole or the engaging groove, but may be a protrusion or the like.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a mobile shelf facility according to a first embodiment.

FIG. 2 is a side view of the moving shelf equipment.

FIG. 3 is a perspective view showing a mounting state of a rail and a braking member.

FIG. 4 is an exploded perspective view showing a mounting state of a braking member and a spring.

FIG. 5 is a partial plan view of a frame.

FIG. 6 is a plan view of a main part.

FIG. 7 is a sectional view taken along line VII-VII of FIG.

8 is a sectional view taken along line VIII-VIII of FIG.

FIG. 9 is a sectional view taken along line IX-IX of FIG.

FIG. 10 is a schematic plan view taken along line XX of FIG. 9;

FIG. 11 is a perspective view of a main part.

FIG. 12 is a diagram for explaining an operation.

FIG. 13 is a diagram for explaining an operation.

FIG. 14 is a diagram illustrating an operation.

FIG. 15 is a diagram illustrating another use mode of the mobile shelf facility.

FIG. 16 is an explanatory diagram of a control system.

FIG. 17 is a diagram illustrating a second embodiment.

FIG. 18 is a diagram illustrating a third embodiment.

FIG. 19 is a diagram showing a fourth embodiment.

FIG. 20 is a front view of the fifth embodiment.

21 is a partially cutaway enlarged view of a main part of FIG. 17;

FIG. 22 is a diagram illustrating sixth to eighth embodiments.

FIG. 23 illustrates a ninth embodiment.

FIG. 24 is a diagram showing another example of the mobile shelf facility to which the present invention can be applied.

[Explanation of symbols]

 A Work space 1 Moving shelf equipment 2 Fixed shelf 3 Moving shelf 4 Rail 6 Frame 8 Braking member 10 Spring as an example of buffering means 9 Engagement hole 16, 17 Wheel 18 Motor 19 Electromagnetic clutch 20 Reduction gear 24 Seismic sensor 26 Section Stop member 27 Electromagnetic solenoid as an example of operating means

Claims (3)

[Claims] An operation in which at least one moving shelf provided with wheels rolling on the rail is placed on a rail laid on the floor, and when the moving shelf is moved, a person can stand in the moving passage. In a moving shelf facility arranged so that a space is vacant, a state in which a long braking member extending in the same direction as a rail can be moved by an appropriate dimension along the longitudinal direction below, above, or both of the moving shelf. And a large number of engaging portions such as engaging holes are provided in the braking member along the longitudinal direction, and the movable shelf is engaged with the engaging portion of the braking member at a portion facing the braking member. Thus, a locking member capable of holding the movable shelf and the braking member in a state in which the moving shelf and the braking member hardly move relative to each other in the horizontal direction is provided. Further, at least at the time of occurrence of an earthquake, the engaging portion of the braking member and the locking member are engaged. To be in a state to gain And their braking member and the locking member is provided with actuating means capable of relative movement,
A safety device for moving shelf equipment, characterized in that: 2. The safety device according to claim 1, further comprising a shock absorbing means for absorbing an impact when the braking member moves in a longitudinal direction thereof. 3. The vehicle according to claim 1, wherein each of the movable shelves has a motor for driving wheels, an electromagnetic clutch for disconnecting power of the motor, and a rotation of the motor. A gear type or other speed reducer for deceleration is provided such that the electromagnetic clutch is located between the speed reducer and the motor,
While the electromagnetic clutch is set so that power is cut off by energization, an electromagnetic solenoid that operates to relatively move a braking member and a locking member by energization cutoff is provided as the operating means, and the electromagnetic solenoid and the electromagnetic clutch are provided. And a seismic sensor that is linked so that when the seismic sensor detects an earthquake, the energization of the electromagnetic solenoid and the electromagnetic clutch is cut off.