JPH0420928Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used in the technical field of elevating equipment in multi-story parking systems, etc., and particularly relates to a fall prevention device for a load-carrying elevating body.

(Prior Art) Conventionally, in elevating equipment such as multi-story parking systems, elevating objects such as pallets that are loaded with loads such as automobiles and raised and lowered are arranged in a hoistway having multiple levels. A fall prevention device is provided, which includes a locking means that can be freely engaged with and detached from the elevating body to prevent the elevating body from falling, and an actuating means that operates the locking means. As the actuation means, a solenoid for retracting the actuation lock connected to the locking means is mainly used,
As the above-mentioned locking means, a hook, arm, or pawl that swings as the operating rod moves back and forth, or a rod that moves back and forth is used. In this fall prevention device, when the elevating object reaches the raised position, the operating means activates the locking means to enable engagement with the elevating object, thereby preventing the elevating object from falling due to erroneous operation, etc., and preventing the elevating object from falling. When descending, the actuating means releases the engagement state of the locking means to allow the elevating body to descend.

(Problem to be solved by the invention) However, in the above conventional fall prevention device,
There was a problem in that the actuating means and the locking means emitted intense noise when activated. For example, in the actuating means, the operating sound of the solenoid is transmitted to the hoistway.
It reaches 89dB, and the locking means includes a swinging hook, arm, pawl, and a rod that moves forward and backward.
They collided with the stoppers that regulate their movement, producing a strong metallic sound.

The present invention has been made in view of the above-mentioned conventional problems, and the object is to provide a fall prevention device that reduces operating noise and improves the quietness of elevating equipment.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is such that a load loading lifting body is arranged in a hoistway having multiple levels so that it can be raised and lowered between a lowered position and a raised position. It is assumed that the lifting equipment is as follows. and an engaging portion provided at both front and rear ends of the left and right sides of the elevating body;
Provided at a position corresponding to the raised position of the lifting body in the hoistway constituting member constituting the hoistway, corresponding to each engagement part of the lifting body in the raised position, respectively, to the hoistway side to raise and lower the lifted position. an engagement position that protrudes to a position opposite to each engagement part of the body and can be engaged with each engagement part of the elevating object when the elevating object is lowered from the raised position; and an engaging position that is retracted from the hoistway and said elevating object A locking member that is movable between a release position that allows the body to move up and down, and a locking member that is provided on the hoistway component in correspondence with each of the locking members, and that the movable range of each locking member is limited to the locking member. A regulating member is provided for regulating between the position and the release position, and a regulating member is provided on the hoistway component corresponding to each of the locking members, and is connected to each of the locking members to move each locking member to the engagement position. and actuating means for moving the device to the release position. An elastic body is provided in at least one of a contact portion of the regulating member that the locking member contacts and a contact portion of the locking member that contacts the regulation member, and the actuating means is arranged in the hoistway. It is assumed that the actuating means and the ascending path constituent member are attached to the constituent member with an elastic body interposed between them.

(Function) With the above configuration, in the present invention, the actuating means is attached to the hoistway constituent member via the elastic body, so the operating sound that is transmitted from the actuating means to the hoistway constituent member is absorbed by the elastic body. Sound is insulated and transmission to the shaft components is suppressed. In addition, since the locking member and the regulating member contact each other via an elastic body,
The collision sound caused by the contact between the two is significantly attenuated by the elastic body. Therefore, a fall prevention device with extremely low operating noise can be obtained.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 11. Note that in this explanation, the right side in FIG. 1 is referred to as the front, and the left side is referred to as the rear, and the left and right sides refer to the directions in FIG. 2.

All of the embodiments are assumed to be used in the lifting equipment 1 shown in FIGS. 1 and 2. This lifting equipment 1
is a two-tiered parking device, in which a lifting body 3 for loading loads such as pallets is suspended via an elevator 4 in a hoistway 2 having two levels, and a horizontal holding mechanism 5 is attached to the lifting body 3. It is something that Hoistway 2
, four pillars 2a are erected on a floor surface 6, and the tops of the front and rear pillars 2a are connected to each other by two left and right connecting beams 2b. The elevating body 3 is disposed inside the left and right pillars 2a so as to be able to rise and fall between a lowered position and a raised position with the automobile 7 loaded thereon. The elevator 4 is an electric hoist that raises and lowers the elevator 3 via a chain 4a, and is fixed to the lower surface of the right connecting beam 2b. Horizontal holding mechanism 5
is for keeping the elevating body 3 in a horizontal state at all times, and two guide sprockets 5a are rotatably supported on each of the right side and the rear end surface of the elevating body 3, and the upper end is connected to the right side. The lower end of the longitudinal chain 5b connected to the front end of the connecting beam 2b is connected to the base of the rear right column 2a via the guide sprocket 5a on the right side of the elevating body 3, while the upper end is connected to the base of the rear right pillar 2a. The lower end of the vehicle width direction chain 5c connected to the rear end of the left connecting beam 2b is connected to the base of the rear right column 2a via the guide sprocket 5a on the rear end surface of the elevating body 3. Become. The fall prevention device 10 of the present invention is provided on the left and right sides of the front and rear ends of the hoistway 2.

<Example 1> The fall prevention device 10a of this example is shown in FIGS. 3 and 4.
As shown in the figure, it consists of a locking means 11a and an actuating means 12a. In the case of this embodiment, hanging fittings 13 as engaging parts are provided upright at both the front and rear ends of the left and right sides of the upper surface of the elevating body 3. The hanging fitting 13 on the right side in FIG. 4 is installed upright on the elevating body 3 adjacent in the vehicle width direction. The hanging fitting 13 has a pin 13b interposed between the upper ends of two side plates 13a. The locking means 11a includes a handle 15a of a hook-shaped locking member 15 rotatably supported by a pin 15b on a bracket 14 fixed to both front and rear ends of the left and right connecting beams 2b. A pair of stoppers 14a as regulating members are fixed to the bracket 14 on both sides of the handle 15a.
An elastic body 16, such as a rubber plate, is attached to the part (the part that the handle 15a of 5 comes into contact with). A central portion of a connecting plate 15c is rotatably supported on one surface of the handle portion 15a. The actuating means 12a is the solenoid 1
7 is a support plate 17a as a mounting part that supports the solenoid 17, and an L-shaped mounting base 14 of a bracket 14.
The actuating rod 17b is attached to the L-shaped mounting base 14b with an elastic body 18 such as vibration-proof rubber interposed between the solenoid 17 and the solenoid 17. A tension spring 20 is interposed between the handle portion 15a of the locking member 15 and the bracket 14. The tension spring 20 is connected to the locking member 15
is urged in the direction of the pin 13b of the hanging fitting 13. Note that 21 is a limit switch fixed to the bracket 14.

Next, the operation of the fall prevention device 10a will be explained. When parking car 7 on the second floor,
The solenoid 17 is energized to retract the actuating rod 17b against the tension spring 20, and the locking member 15 is brought into contact with the stopper 14a on the side opposite to the pin 13b, and is retracted from the hoistway 2. Next, the elevating body 3 loaded with the automobile 7 is raised by the elevating machine 4, and after stopping at the elevated position on the second floor, the solenoid 17 is demagnetized. The tension spring 20 uses its restoring force to pull out the actuating rod 17b until the locking member 15 projects to a position where it can come into contact with the stopper 14a on the pin 13b side. The locking member 15 has a hook portion 15d that is connected to the pin 1.
3b, and becomes in a state where it can engage with the pin 13b when the elevating body 3 descends from the raised position. Therefore, in the unlikely event that the elevating body 3 attempts to fall due to a malfunction, or if due to an incorrect operation the elevating body 3 attempts to descend even though another car 7 is parked on the first floor. , hook part 15d is pin 1
3b to prevent the elevating body 3 from falling or descending. Note that even if there is a power outage while the elevator 3 is stopped on the second floor, the solenoid 17 is demagnetized, so the state in which the hook portion 15d can engage with the pin 13b is maintained, and the elevator 3 is not moved. There is no fear of falling. When lowering the automobile 7 to the lowered position on the first floor, the solenoid 17 is energized again to retract the actuating rod 17b against the tension spring 20, and the locking member 15 is brought into contact with the stopper 14a on the side opposite to the pin 13b. After the hook portion 15d is brought into contact with the pin 13b and released from the state in which it can be engaged with the pin 13b, the elevator 4 lowers the elevator 3. During the above operation, even if the operating sound of the solenoid 17 tries to be transmitted to the shaft components such as the pillar 2a, the sound is insulated by the elastic body 18 interposed between the support plate 17a and the L-shaped mounting base 14b, Transmission of sound to the shaft components is suppressed. Furthermore, the locking member 15 and the stopper 14a are connected to the elastic body 1.
6, the impact sound is significantly attenuated. Therefore, the operating noise of the fall prevention device 10a was reduced to 76 dB, making it extremely quiet.

<Example 2> The fall prevention device 10b of this example is shown in FIGS. 5 and 6.
As shown in the figure, it consists of a locking means 11b and an actuating means 12b. In the case of this embodiment, support protrusions 22 as engaging portions are protrudingly provided at both front and rear ends of the left and right sides of the elevating body 3. The locking means 11b is a bracket 2 fixed to both the front and rear ends of the left and right connecting beams 2b.
3, the middle part of the arm-shaped locking member 24 is the pin 24.
It is rotatably supported by a. The bracket 23 has stoppers 23a and 23b as regulating members that come into contact with both upper and lower ends of one side of the locking member 24.
are fixed respectively. Each stopper 23a,
Elastic bodies 25 and 26, such as rubber pieces, are respectively fixed to the surface of 23b facing the locking member 24 (that is, the portion in contact with the locking member 24).
The actuation means 12b includes a support plate 17a for supporting the solenoid 17 and a stopper 23a.
An elastic body 18 is interposed between the stopper 2 and the stopper 2.
3a, and the operating rod 17b of the solenoid 17 connects to the locking member 2 through the chain 19.
4, and a tension spring 20 is interposed between the lower end of the locking member 24 and the stopper 23b. The tension spring 20 biases the upper end of the locking member 24 in the direction of the support protrusion 22 . Note that a limit switch 21 is fixedly installed on the stopper 23b.

Next, the operation of the fall prevention device 10b will be explained. When parking car 7 on the second floor,
As in the first embodiment, the solenoid 17 is energized and the upper end of the locking member 24 is moved to the stopper 23a.
The solenoid 17 is demagnetized after the elevating body 3 is raised and stopped at the raised position on the second floor. The tension spring 20 uses its restoring force to pull out the actuating rod 17b until the lower end of the locking member 24 projects to a position where it can come into contact with the stopper 23b. The upper end edge of the locking member 24 moves directly below the support protrusion 22 and becomes in a state where it can engage with the support protrusion 22 . Therefore, as in the case of Example 1,
If the elevating body 3 attempts to fall or descend due to a malfunction or incorrect operation, the upper edge of the locking member 24 will engage the lower surface of the support protrusion 22 to prevent the elevating body 3 from falling or descending, thereby preventing the power outage. Since the engaged state is maintained even when the device is in use, there is no risk of it falling off. When lowering the automobile 7 to the lowered position on the first floor, the solenoid 17 is re-energized and the locking member 2 is
4 is released from being able to engage with the support protrusion 22, the elevating body 3 is lowered. During the above-mentioned operation, the operating sound that is about to be transmitted from the solenoid 17 to the shaft components is insulated by the elastic body 18 and is suppressed from being transmitted to the shaft components. In addition, the locking member 24
and the stoppers 23a, 23b are the elastic bodies 2, respectively.
5 and 26, the collision noise is significantly reduced. Therefore, the fall prevention device 10
The operating sound of b is extremely quiet.

<Example 3> The fall prevention device 10c of this example is shown in FIGS. 7 and 8.
As shown in the figure, it consists of a locking means 11c and an actuating means 12c. In the case of this embodiment, seat plates 27 as engaging portions are fixed to the left and right sides of the lower surface of both front and rear ends of the elevating body 3. The locking means 11c includes a locking member 29 provided on a bracket 28 fixed to the layer boundary of the left and right pillars 2a at both front and rear ends. The bracket 28 is fixed to the center of the mounting plate 28a with one end of the guide cylindrical member 28b passing through it.
In addition, an L-shaped mounting base 2 is provided at the other end of the guide cylindrical member 28b.
8c is fixed. A through hole 30 is bored in the pillar 2a as a shaft component member, coaxially with the opening of the guide cylindrical member 28b. The locking member 29 is
A cylindrical portion 29a loosely fitted into the guide cylindrical member 28b so as to be movable forward and backward, and one end of the rod portion 29b inserted into the cylindrical portion 29a are fixed to each other via a spring seat 29c. The other end of the rod portion 29b extends through the mounting base 28c, and elastic bodies 31 such as rubber pieces are mounted on both sides of the rod portion 29b to face the mounting base 28c. Spring seat 29c and mounting base 28c
A compression spring 32 is interposed between the compression spring 3 and
2 urges the cylindrical portion 29a of the locking member 29 in a direction to protrude, and also brings one end surface of the elastic body 31 at the other end of the rod portion 29b into contact with the mounting base 28c as a regulating member. The actuating means 12c is such that the solenoid 17 is fixed to the mounting base 28c with an elastic body 18 interposed between the support plate 17a supporting the solenoid 17 and the mounting base 28c, and the tip of the operating rod 17b of the solenoid 17 is The elastic body 31 is sandwiched from the outside and connected to the other end of the rod portion 29b.

Next, the operation of the fall prevention device 10c will be explained. To park the car 7 on the second floor, the solenoid 17 is energized, the cylindrical part 29a is retracted against the compression spring 32 via the actuating rod 17b, and the elevating body 3 is raised to the second floor. After stopping at the raised position, the solenoid 17 is demagnetized. The compression spring 32 compresses the rod portion 29b due to its restoring force.
The actuating rod 17b is pulled out until the elastic body 31 comes into contact with the mounting base 28c. Locking member 29
In this case, the cylindrical portion 29a protrudes directly below the seat plate 27 of the elevating body 3, and is in a state where it can engage with the seat plate 27. Therefore, as in each of the above embodiments, the falling and descending operations of the elevating body 3 due to malfunction or erroneous operation are
This is prevented by the engagement between the cylindrical portion 29a and the seat plate 27, and there is no risk of it falling even during a power outage. When the automobile 7 is lowered to the lowered position on the first floor, the solenoid 17 is energized again to release the state in which the cylindrical portion 29a can engage with the seat plate 27, and then the elevating body 3 is lowered. During the above-mentioned operation, the operating sound that is about to be transmitted from the solenoid 17 to the shaft components is insulated by the elastic body 18 and is suppressed from being transmitted to the shaft components. Further, the protrusion movement of the cylindrical portion 29a is caused by the elastic body 31
Since it is limited by the contact between the and the mounting base 28c,
The impact sound is significantly attenuated. Therefore, the operating sound of the fall prevention device 10c is extremely quiet.

<Example 4> A fall prevention device 10d of this example is shown in FIGS. 9 to 11, and has a locking means 11d on a bracket 33.
and the actuating means 12d are assembled. The bracket 33 has two side plates 33b on a mounting plate 33a.
are fixed to face each other, a cover 33c is installed at the middle part of both side plates 33b, and a connecting plate 33d is installed at the lower end of each side plate 33b. It is permanently installed. In the locking means 11d, a boss portion 34a of a plate-shaped locking member 34 is rotatably supported between the lower ends of both side plates 33b of the bracket 33 by a pin 34b. The locking member 34 has a claw portion 34c formed on one side of a boss portion 34a, a stopper portion 34d on the other side, and a hook pin 34e fixed to the stopper portion 34d. A coil spring 35 is fitted onto the boss portion 34a, and a ring portion 35a formed at the end of the winding of the coil spring 35 is hooked onto a hook pin 34e and a bolt 33e screwed onto one side plate 33b. . The coil spring 35 biases the locking member 34 in the direction in which the claw portion 34c is in the horizontal position (solid line in FIG. 9). The actuation means 12d is the solenoid 1
7 is vertically fixed to the mounting plate 33a with an elastic body 18 interposed between the support plate 17a supporting the solenoid 17 and the mounting plate 33a fixed to the connecting beam 2b, and the actuating rod 17b of the solenoid 17 is fixed to the mounting plate 33a vertically.
The distal end portion of the stopper 36 is connected to the intermediate portion of the stopper 36 via the chain 19. The actuation rod 17b is
It abuts against the upper surface of the cover 33c due to its own weight via an elastic body 37 such as a rubber piece attached to the tip. An elastic body 38 such as a rubber piece is attached to the bottom surface of the cover 33c.
is permanently installed. Stopper 3 as a regulating member
Reference numeral 6 denotes a plate-shaped body whose one end is rotatably supported on the other side plate 33b (on the right side in FIG. 10) by a pin 36a, and is inserted into slits 33f formed in each side plate 33b. In stopper 36,
An elastic body 39 such as a rubber plate is attached to the surface of the locking member 34 that faces the stopper portion 34d. A limit switch 21 is fixed to one side plate 33b (left side in FIG. 10).

Next, the operation of the fall prevention device 10d will be explained. When parking car 7 on the second floor,
The locking operation of the locking member 34 is performed simply by raising the elevator 3 with the solenoid 17 demagnetized and stopping it at the second floor. That is, when the elevating body 3 rises, its upper surface touches the pawl member 34 of the locking member 34.
c while pushing up against the coil spring 35. When the elevating body 3 passes, the pawl portion 34c returns to its original horizontal position due to the restoring force of the coil spring 35, and becomes in a state where it can engage with the lower surface of the elevating body 3. Even if a downward load is applied to the pawl portion 34c in this state, the stopper portion 34d contacts the stopper 36, so that the pawl portion 34c can receive the load. Therefore, as in the case of each of the embodiments described above, the falling and descending movements of the elevating body 3 due to malfunction or erroneous operation are prevented by the engagement between the claw portion 34c and the lower surface of the elevating body 3, and there is no fear of falling even during a power outage. There isn't. When lowering the car 7 to the first floor, solenoid 17
is excited, and the chain 19 is activated by the actuating rod 17b.
The stopper 36 is pulled up until it comes into contact with the elastic body 38. As a result, the stopper 36 is removed from the stopper portion 34d, and the pawl portion 34c becomes rotatable downward. Then, when the elevating body 3 is lowered, the lower surface of the elevating body 3 passes while pushing up the claw portion 34c. When the elevating body 3 passes, the pawl portion 34
c returns to its original horizontal position by the restoring force of the coil spring 35. Finally, the solenoid 17 is demagnetized, the actuating rod 17b is lowered by its own weight until the elastic body 37 contacts the cover 33c, and the stopper 3
6 is lowered. During the above-mentioned operation, the operating sound that is about to be transmitted from the solenoid 17 to the shaft components is insulated by the elastic body 18 and is suppressed from being transmitted to the shaft components. Further, the vibration of the stopper portion 34d due to the lowering of the actuating rod 17b, the lifting of the stopper 36, and the repulsive force of the coil spring 35,
Since they are limited via the respective elastic bodies 37, 38, 39, their impact sounds are significantly attenuated.
Therefore, the operating sound of the fall prevention device 10d is extremely quiet.

In each of the above embodiments, the lifting equipment 1 is a two-stage parking device, but it is not necessarily limited to this, and lifting equipment of other types and uses may be used.

(Effects of the invention) Since the present invention is constructed as described above, the operating sound that is about to be transmitted from the actuating means to the shaft components is insulated by the elastic body, and transmission to the shaft components is suppressed. Since the collision noise between the stop member and the regulating member is generated through the elastic body, it is significantly reduced. Therefore, there is an advantage that the operating noise of the fall prevention device is extremely low.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention; Fig. 1 is a front sectional view of the lifting equipment to which the present invention is applied; Fig. 2 is a left side view of Fig. 1; Fig. 3 and the following figures are the fall prevention of the present invention. Drawings showing embodiments of the device, FIG. 3 is embodiment 1
, FIG. 4 is a right side view with a part of FIG. 3 cut away, FIG. 5 is a front view of Embodiment 2, FIG. 6 is a left side view of FIG. FIG. 8 is a partially cutaway front view of Example 3, FIG. 8 is a partially cutaway plan view of FIG. 7, FIG. 9 is a partially cutaway front view of Example 4, and FIG. is a sectional view taken along the - line in Fig. 9, and Fig. 11 is a sectional view taken along the - line in Fig. 10.
FIG. 1... Lifting equipment, 2... Hoistway, 2a... Pillar,
2b... Connecting beam, 3... Lifting body, 10,10
a, 10b, 10c, 10d...fall prevention device,
11a, 11b, 11c, 11d...locking means,
12a, 12b, 12c, 12d... actuation means,
16, 18, 25, 26, 31, 37, 38, 3
9...Elastic body, 13...Hanging fitting, 14a, 23
a, 23b, 36... Stopper, 28c... Mounting base, 15, 24, 29, 34... Locking member, 22
...Support protrusion, 27...Seat plate.

Claims (1)

[Scope of Claim for Utility Model Registration] In a lifting equipment in which a load-loading lifting body is arranged in a hoistway having multiple levels so as to be able to rise and fall freely between a lowered position and a raised position, both the front and rear ends of the left and right sides of said lifting body an engaging portion provided in the hoistway, and an engaging portion provided at a position corresponding to the raised position of the elevating body in the hoistway constituent member constituting the hoistway, corresponding to each engaging portion of the elevating body in the raised position,
Engagement positions that protrude toward the hoistway side at positions opposite to each other below the respective engagement portions of the elevating body in the raised position and can engage with the respective engaging portions of the elevating body when the elevating body descends from the raised position. and a locking member that is movable between a release position where it is retracted from the hoistway and allows the elevating body to ascend and descend; a regulating member for regulating the movement range of the locking member between the engagement position and the release position; and a regulating member provided on the hoistway component corresponding to each of the locking members, each connected to the locking member. and an actuating means for moving each locking member between the engagement position and the release position, an abutment portion of the restriction member that the locking member abuts, and a contact portion of the locking member that abuts the restriction member. At least one of the contact portions is provided with an elastic body, and the actuating means is attached to the hoistway constituent member with an elastic body interposed between the actuating means and the ascending passage constituent member. A fall prevention device for lifting equipment, characterized by: