JPH0570080A - Suspension type conveying device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to an automatic traveling device that is suspended from a horizontal beam and travels just below the beam. [Structure] When three or more sets of traveling wheel opening / closing devices suspend the transportation device and the transportation device passes under an obstacle on the way of traveling, the traveling wheels of the obstacle portion are sequentially opened and closed to collide with the obstacle. It is a running wheel opening / closing device with a function to avoid [Effect] Since the structure of the suspension platform is simple, the suspension type transfer device can be used in a wider range of applications.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling wheel opening / closing device of a suspension type conveying device which is suspended from a horizontal beam of an existing steel structure and travels immediately below the beam.

[0002]

2. Description of the Related Art A conventional traveling device that is suspended from a horizontal beam and travels just below the beam is an H-shaped steel horizontally installed so that it can be seen in a suspension type traveling device such as a lifting device or a transportation facility. Alternatively, a traveling wheel is mounted on the upper surface of the lower flange of the I-shaped steel or the like, and the traveling apparatus main body and the lifting device or the load carrying box are suspended on the traveling wheel via the bearing of the wheel. For this reason, the flange is reinforced on the upper surface of the lower flange so as to prevent the traveling wheel from rolling or advancing, for example, by reinforcing the flange by a simple method such as connecting the web and the flange with ribs. Was difficult. For this reason, the beam needs to have a high rigidity, and inevitably a relatively large beam must be used.

Further, when the suspension beam is supported by the lower beam lower side flange with a horizontal beam, the traveling apparatus main body is suspended from the traveling wheel on the flange upper surface through the suspension arm. There was a problem that the horizontal beam interfered with the progress and could not drive any further. For this reason, the suspension beam has no choice but to have a structure in which it is suspended via the upper surface side flange of the beam, and there is a drawback in that the work for installing the beam is very troublesome.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks and to prevent the traveling of reinforcing ribs of suspension beams and gantry beams supporting the beams. The present invention aims to provide a suspension type transfer facility that can pass through a portion of the obstacle.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a plurality of pairs of left and right running wheels are made to run on the lower flange of a beam of I-section steel or H-section steel. In a suspension type transfer device in which the traveling wheels are coupled to one end of a suspension arm and the other end thereof is coupled to a machine frame, three or more pairs of the traveling wheels are provided, and at least two pairs thereof are rotationally driven. The main part of the suspension arm has an L-shaped upside-down shape, and the traveling wheel is attached to the end of the upper side of the suspension arm, and the other side of the suspension arm is connected to the machine frame by a rotary shaft. The suspension arm drive mechanism coupled to the suspension arm can rotate the suspension arm around the rotation axis in a direction of separating the suspension arm from the beam.

Further, the suspension arm drive mechanism projects a horizontal side portion from the rotary shaft portion of the suspension arm to the same side as the upper side of the suspension arm, connects a link to the tip of the side portion, and further connects the left and right links. It is characterized in that it is connected to both ends of an elevating arm and is provided with a vertical drive mechanism on the elevating arm, or a sector gear that rotates together with the suspending arm is provided on the rotating shaft of the suspending arm and meshes with each other. Two left and right gears are meshed with the left and right suspension arm sector gears, respectively, and one of the two gears is rotationally driven.

The rotating shaft connected to the traveling shaft is connected to the rotating shaft of the suspension arm by a bevel gear at the bent portion of the suspension arm and extends to the rotating shaft of the suspension arm, and a bevel gear is provided at the extended end. Meshes with a bevel gear that is coupled and rotates coaxially with the axis of rotation of the suspension arm and independent of rotation of the suspension arm;
It is also characterized in that the traveling wheel is rotated by rotationally driving the shaft of a bevel gear that is coaxial with the rotation shaft of the suspension arm.
Further, it is also characterized in that the receiving wheels that rotate in contact with the lower surface of the lower flange of the beam are provided close to the running wheels at the front and rear ends so as to be able to move forward and backward from the machine frame.

[0008]

In the apparatus of the present invention, a plurality of pairs of left and right traveling wheels are made to travel on the lower flange of the beam of I-section steel or H-section steel. These are connected to one end of the suspension arm, and the machine frame is connected to the other end for carrying. Here, three or more pairs of running wheels are required. This is because at least two pairs of running wheels work in this state because the suspension arm is opened to retract the running wheels when there is an obstacle during running. This is because the transport device cannot be held without it.

Further, it is necessary to rotationally drive two or more pairs of the traveling wheels provided in three or more pairs. This is because it is necessary that at least one pair of running wheels be working when the running wheels are retracted as described above. It should be noted that in a state where three or more pairs of traveling wheels are traveling, the load of the carrier is not always evenly distributed, so it is desirable to drive all the traveling wheels as much as possible to prevent slippage. .. Similarly, it is desirable to drive both of the pair of running wheels rather than only one side.

The main part of the suspension arm has an L-shaped upside down shape, and traveling wheels are attached to the ends of the upper side of the suspension arm. Since the ends of the other sides are connected to the machine frame by a rotation shaft, when there is an obstacle, the suspension arm is rotated by the rotation around the rotation shaft to retract the traveling wheel, and the transport device is directly used. Can proceed.

As described above, since the suspension arm has an L-shape upside down, when the vehicle rotates by the rotating shaft, the traveling wheel is detached obliquely upward from the flange of the beam or returned obliquely from above. The running wheels can be separated without resistance and can return without being caught by the flange. The L-shape of the suspension arm refers to the shape of the main part, and a protrusion or a gear may be connected to transmit the power of the opening / closing drive described later.

The drive mechanism for opening and closing the suspension arm is not particularly limited. There are various methods, but as a preferred example, the lateral sides are projected on the same side as the upper side of the suspension arm, that is, the same side as the running wheels, and the left and right suspension arms are connected to both ends of the lifting arm via links. There is a way. A feed screw penetrating this is provided on the elevating arm, and when the elevating arm is rotated and raised by the power of a motor or the like, a rotational force is applied to the suspension arm and the traveling wheel is separated from the flange of the beam.
The mechanism for vertically moving the lifting arm is not limited to this, and may be a hydraulic or pneumatic cylinder or the like.

As another preferred example, a sector gear that rotates together with the suspension arm is provided, and two left and right gears (the dimensions are basically the same) meshing with each other and the sector gears of the left and right suspension arms are meshed with each other. Good.
When one of the two gears is rotated by applying power, the other rotates in the opposite direction, so that the left and right sector gears meshing with the two gears rotate in opposite directions and the suspension arm can be opened and closed.

As described above, it is necessary to drive two or more pairs of traveling wheels, but when a power source such as a motor is provided in the machine frame, the suspension arm is prevented from rotating. A power transmission method that does not become necessary is required. However, a motor may be attached to each suspension arm and directly connected to the traveling wheels, and the present invention does not exclude this. However, if all the traveling wheels can be driven by one motor, it is convenient in terms of cost. is there.

The following are preferred examples of this. That is, the rotating shaft connected to the traveling wheel is connected by the bevel gear at the bending portion of the suspension arm and extends along the suspension arm to the rotation shaft thereof. The rotating shaft of the suspension arm is provided with a bevel gear that rotates coaxially with the suspension arm and separately from the suspension arm itself, and the bevel gear is attached and meshed with the tip of the extension of the rotating shaft. When the bevel gear coaxial with the suspension arm is rotated, the rotation is transmitted to the traveling shaft, and power can be transmitted independently of the suspension arm without hindering the rotation operation of the suspension arm. Further, since the power shaft coaxial with the suspension arm is in a common position for a plurality of running wheels, if there are two left and right wheels, all running wheels can rotate simultaneously.

When the running wheels at the front and rear ends are disengaged,
Depending on the position of the center of gravity of the transfer device, the side from which the traveling wheel is detached may hang down and the other side may float up. In order to prevent this, it is preferable to provide a tilting prevention device in the vicinity of the front and rear traveling shafts. This can be achieved by providing a receiving wheel that rotates in contact with the lower surface of the lower flange of the beam so as to be able to move forward and backward from the machine frame, and prevent it from rising by being sandwiched between it and the running wheel.

[0017]

EXAMPLES The present invention will be described in detail below based on examples. FIG. 2 shows that a suspension type transporting device equipped with four traveling wheel opening / closing devices 110 at appropriate intervals while suspending and traveling on the lower flange 24 of the H-shaped steel 23 while the suspension type transporting device is running. FIG. 6 is a diagram showing a state in which the traveling wheel 22 of the traveling wheel opening / closing device 110 located at the earliest position is opened and a portion of the traveling wheel 22 passes below an obstacle 34. In the suspension type conveying device, the traveling wheels 22 of the traveling wheel opening / closing device 110 are opposed to each other via the web 25 of the H-shaped steel 23 and are mounted on the upper surface of the lower flange 24, and each traveling wheel 22 is Is rotated by the electric motor 27 via each suspension arm 14 and the rotary shaft 1,
The machine frame 26 loaded with the control device 28, the battery 29, etc. is suspended and travels immediately below the H-section steel 23.

FIG. 1 is a sectional view taken along the line AA of FIG. 2, showing a traveling wheel opening / closing device 11 of the present invention in the suspension type transfer device.
0, the traveling device 120 is shown. FIG. 3 is a sectional view taken along line CC of FIG. The suspension type conveyance device including the traveling wheel opening / closing device 110 includes at least three traveling wheel opening / closing devices 110.

In the traveling device 120, a traveling wheel 22 is fixed to an end portion of a shaft 21 which is inserted into a bearing 20 provided on an upper end side lateral portion 49 of the suspension arm 14, and the traveling wheel 22 has an H-shaped steel 23. A bevel gear 19 fixed to the shaft 21, a shaft 21 running on the upper surface of the lower flange 24 and rotating the running wheel 22, a bevel gear 18 meshing with the bevel gear 19, and a rotary shaft fixed to the bevel gear 18. 16, a bevel gear 17 fixed to the shaft 16, a bevel gear 2 meshing with the bevel gear 17, and a rotation shaft 1 fixed to the bevel gear 2 to rotate, and the rotation shaft 1 is fixed to the machine frame 26. It is configured to be rotated by an electric motor 27 (FIG. 2) which is pivotally supported by the bracket 31 and provided.

FIG. 5 is a sectional view taken along the line BB of FIG. 2, showing the operating state of the traveling wheel opening / closing device. As shown in this figure, the rotary shaft 1 is composed of a pair of rotary shafts 1a and 1b. The rotation shafts 1a, 1b are rotated by a sprocket 44 fixed to the output shaft 43 of the electric motor 27 (FIG. 2), a sprocket 45 fixed to the rotation shaft, and chains 46, 47 connecting the sprockets 44, 45. Rotate in different directions.

As shown in FIG. 1, the driving mechanism of the traveling wheel opening / closing device 110 is such that one end of the link 4 is joined to the tip of the lower lateral side portion 48 of the suspension arm 14 via the shaft 3 to form a link. The other end of 4 is jointed to a lifting arm 6 via a shaft 5, and the lifting arm 6 is screwed with a screw 8 of a shaft 7 at a central portion,
The shaft 7 is rotatably supported by bearings 10 and 9 provided above and below the elevating arm 6, and the upper end portion of the shaft 7 has gears 11 and 12 as shown in FIG.
Is connected to an electric motor 13 that drives the shaft 7 via the.

In the traveling wheel opening / closing device 110, as shown in FIG. 1, when the traveling wheel 22 suspends the traveling device via the suspension arm 14, the rotating shaft 1 is the lower end of the suspension arm 14. Since the bevel gear 2 fixed to the rotating shaft 1 is also rotated when the rotating shaft 1 is rotated, since the bevel gear 2 is pivotally attached to the apex angle portion of the side lateral side portion 48, the traveling wheel 22 is the bevel gear. Since it is rotated via 17, the shaft 16, the bevel gears 18, 19, and the shaft 21, the suspension type conveying device can move forward or backward. By driving the electric motor 13 (FIG. 6), the shaft 7 is fixed to the output shaft of the electric motor 13, and the gear 12,
It rotates via a gear 11 fixed to the shaft 7.

Since the elevating arm 6 is screwed with the shaft 7, when the shaft 7 is rotated, it moves up and down according to the rotation direction. When the elevating arm 6 is raised by the rotation of the shaft 7, the other joint of the link 4 that is jointed to the elevating arm 6 is joined to the end of the lateral side portion 48 of the lower end of the suspension arm 14. Therefore, each suspension arm 14 has a rotary shaft 1
The bevel gear 17 provided on the suspension arm 14 is opened outwardly with respect to the shaft 7 while rolling the tooth surface of the bevel gear 2 fixed to the rotating shaft 1. Therefore, the running wheel 22 provided at the end of the upper lateral side portion 49 separates from the lower flange 24 of the H-shaped steel 23 that has been suspended. The traveling wheel 22 separated from the flange is still connected to the rotary shaft 1 and therefore is rotating.

Next, when the shaft 7 is rotated in the direction opposite to the above-mentioned rotation, the elevating arm 6 descends, so that the suspension arm 14 moves the shaft 7 around the rotation axis 1.
By swiveling inwardly and closing the traveling wheel 22, the rotating traveling wheel 22 is mounted on the upper surface of the lower flange 24 of the H-shaped steel 23 and is suspended by the flange 24 while traveling. To do.

Due to the above-mentioned constitution, in the case where there is an obstacle 34 which obstructs the progress in the vicinity of the H-shaped steel 23 lower flange 24 which suspends the suspension type transfer device in the course of the progress thereof. Before the traveling wheel 22, the suspension arm 14 and the like collide with the obstacle 34, the swinging portion 30 of the swingable switch 42 provided in front of the traveling wheel 22 is pushed by the obstacle 34 and falls down. By providing a mechanism through which a current for rotating the electric motor 13 in a direction of raising the elevating arm 6 is provided, the nearest suspension arm 14 approaching the obstacle 34 and approaching is opened to avoid a collision. can do. At this time, the suspended transfer device continues to travel by the traveling device 120 that constitutes the other traveling wheel opening / closing device 110, so that the opened suspension arm 14 can pass under the obstacle. After the passage, a mechanism for turning on the electric motor 13 in the direction of lowering the elevating arm 6 by returning the tilt of the swinging part using a spring or the like is provided in advance, so that an open suspension is provided. Hanging arm 1
4 automatically closes, the traveling wheel opening / closing device 110 returns to the function of suspending traveling again.

The suspension type transfer device includes a traveling wheel opening / closing device 11
Since 0 has the above-mentioned function, each suspension arm 14 which is arranged in a row with an appropriate interval can open and close an obstacle and pass under the obstacle, so that the suspension arm 14 can be opened and closed sequentially. It can move and pass under an obstacle without colliding with it.

The up-and-down reciprocating mechanism for raising and lowering the elevating arm in the traveling wheel opening / closing device 110 is not necessarily limited to the mechanism in which the elevating arm 6 and the shaft 7 shown in FIG. 1 are screwed together. Alternatively, a cylinder or a cam or the like which is hydraulically or pneumatically operated may be used.

FIG. 7 is a diagram showing another embodiment of the drive mechanism for opening and closing the suspension arm, which is different from the one described above. The suspension arm 14 has a sector gear 11 that rotates with it.
1 is provided, and two left and right gears 112 and 113 of the same size that mesh with each other mesh with the left and right sector gears. By rotationally driving either of the two gears 112 and 113, the two gears rotate in opposite directions to each other, and the suspension arm 14 simultaneously rotates left and right due to the rotation of the sector gear. The driving of these gears is performed when the motor is stopped via a worm gear to brake the vehicle.

The suspension-type transfer device is provided with an anti-tilt device 130 near each traveling wheel 22 included in the traveling wheel opening / closing device 110 on the most distal side and the rearmost side of the suspension system. When the traveling wheel 22 of the traveling wheel opening / closing device 110 on the most distal end side or the rearmost end side is opened, the center of gravity of the suspension type conveying device is on the upper surface of the H-shaped steel 23 flange 24. When the apparatus is located between the running wheels that are suspended, it prevents the apparatus from tilting with the running wheel 22 closest to the center of gravity as a fulcrum to make traveling difficult.

FIG. 4 is a diagram showing the tilting prevention device 130, and FIG. 6 is a side view of the same, and FIG.
It is shown together with 0 mag. As shown in FIG. 6, the tilt preventive device 130 has a lower portion of a bearing 35 that axially supports the receiving wheel 32 screwed with a shaft 36. The shaft is a bearing 4
0 and 41 are loosely fitted, and a gear 37 is fixed to the lower end thereof. The gear 37 has a structure in which it meshes with a gear 38 fixed to the rotating shaft of an electric motor 39. This is a device in which the shaft 36 rotates, and the rotation of the shaft 36 causes the bearing 35 screwed to the shaft to move up and down, so that the receiving wheel 32 provided on the bearing 35 also moves up and down.

Since the anti-tilt device 130 has the above-mentioned structure, the receiving wheel 32 of the anti-tilt device 130 provided in the vicinity of another traveling wheel 22 is raised immediately before the traveling wheel 22 is opened.
By sandwiching the flange 24 of the H-shaped steel 23 between the traveling wheel 22 and the receiving wheel 32, the device can travel without tilting.

[0032]

As described above, the traveling apparatus of the present invention has a rib for reinforcing the lower flange of the beam or an upper beam mounted on a beam of H-section steel or I-section steel on which traveling wheels are suspended. Even if there is a traveling obstacle of the traveling device of the present traveling device such as the receiving beam or the horizontal joint beam that reinforces the beam, it can pass under these protrusions and the horizontal joint beam.

Therefore, the suspension beam can be reinforced by using ribs and horizontal joint beams, and an upper structure can be constructed within a traveling range which is not possible with the conventional suspension beam installation structure. Therefore, it is possible to use a light-weight one, facilitate the installation, and reduce the installation work cost.

Further, as shown in FIG. 2 and FIG. 5, it can be used as a carrying device by suspending and carrying a loading cargo box 33 on the main suspension type transportation facility. In this case, the beam on which this device is suspended may have a simple structure in which only the upper beam is fixed on the portal frame as shown in FIG. It is easy and the construction cost is low.

Further, when a suspension type transfer device is installed in a building having a truss structure, the use of this device does not require a dedicated traveling rail to be laid on the ceiling as in the conventional case, and is an existing truss lower chord member. Since the horizontal joint or the connecting beam between the horizontal joints can be used as the suspension beam for traveling of this device, the facility cost can be extremely low.

Since this device can run while automatically avoiding the reinforcing ribs and auxiliary beams, a suction nozzle for sucking the accumulated dust on the upper surface of the flange is attached to the suspension arm on the tip side in the traveling direction of the device. If the vehicle is suspended from the palms and travels, the dust accumulated on the horizontal palms can be automatically removed. Dust accumulates on the horizontal palm for many years after the building is built, and the accumulated dust falls due to vibrations of factories and earthquakes, etc., and the fallen dust damages or contaminates the machines, products, etc. in the falling part. Therefore, it is necessary to remove the accumulated dust, but it requires a huge amount of money because the operation of the factory must be stopped to remove it. There wasn't. With the advent of this device, it became possible to easily and cheaply remove the accumulated dust.

Furthermore, if an automatic scouring and cleaning device is provided at the front end of the present apparatus in the traveling direction and an automatic coating machine is provided at the rear end and the suspension pipe is suspended and run on the overhead piping, the automatic coating of the aged pipe becomes possible. Since the conventional maintenance work by painting the overhead piping is carried out by constructing a scaffold for construction along the piping, the cost is high, and since it is left to be aged, the economic effect of this device is great.

Further, a high pressure water cleaning device is provided in this device,
The electric wire can be automatically washed by suspending the overhead wire that is contaminated by salt and traveling. For this reason, there is no risk of electric shock to a worker who is cleaning, and automatic cleaning can be performed without being affected by the topography under the electric wire, so that the electric wire can be safely and promptly cleaned.

Since the traveling wheel opening / closing device of the present invention has been invented, the suspension type traveling device has a wide variety of uses, and as described above, it becomes easy to carry out various works that have been difficult to achieve in the past. Work can now be done automatically. The expansion of its application and the economic effect thereof are extremely large.

[Brief description of drawings]

1 is a sectional view taken along the line AA of FIG.

FIG. 2 is a diagram showing a suspension type transport device of the present invention.

FIG. 3 is a sectional view taken along the line CC of FIG.

FIG. 4 is a view showing a tilt prevention device.

5 is a cross-sectional view taken along line BB of FIG. 2, showing a state in which the traveling wheels of the traveling wheel opening / closing device are opened.

FIG. 6 is a diagram showing a relationship between a tilt prevention device and a traveling wheel opening / closing device.

FIG. 7 is a diagram showing an embodiment of a traveling wheel opening / closing device.

[Explanation of symbols]

 2 Bevel gear 4 Link 6 Lifting arm 14 Suspending arm 22 Running wheel 23 H-shaped steel 24 Lower flange 26 Machine frame 32 Receiving wheel 34 Obstacle 110 Running wheel opening / closing device 120 Traveling device 130 Tilt prevention device 111 Sector gear 112, 113 Gears

Front Page Continuation (72) Inventor Takao Yamamoto 9-27 Kawabuchicho, Yawatahigashi-ku, Kitakyushu, Fukuoka Taihei Kogyo Co., Ltd., Yawata Branch (72) Inventor Takehiko Takasaki 9-27 Kawabuchicho, Yawatahigashi, Kitakyushu, Fukuoka Taihei Kogyo Co., Ltd. Yawata Branch

Claims (6)

[Claims] 1. A plurality of pairs of left and right traveling wheels are made to travel on a lower flange of a beam of I-section steel or H-section steel, said traveling wheels being connected to one end of a suspension arm, and the other end of which is connected to the machine. In a suspension type transfer device connected to a frame, three or more pairs of the traveling wheels are provided, at least two pairs of which are rotationally driven, and a main part of the suspension arm has an L-shaped upside down shape. The running wheel is attached to the end of the upper side of this, the end of the other side is connected to the machine frame by a rotating shaft, and by the suspension arm drive mechanism connected to the suspension arm,
A suspension-type transfer device, wherein the suspension arm can be rotated around the rotation axis in a direction away from the beam. 2. The suspension arm drive mechanism has a lateral side portion projecting from the rotary shaft portion of the suspension arm to the same side as the upper side of the suspension arm, and a link is coupled to the tip of the lateral side portion, and the left and right links are further connected. 2. The suspended transfer apparatus according to claim 1, wherein the lifting and lowering arm is provided with an up-and-down drive mechanism, the upper and lower arms being connected to both ends of the lifting and lowering arm. 3. The suspension-type transfer device according to claim 2, wherein the vertical drive mechanism for the lifting arm is one in which a screw hole is passed through the lifting arm and a feed screw is passed through the screw hole. 4. The suspension arm drive mechanism is provided with a sector gear that rotates together with the suspension arm on a rotation axis of the suspension arm,
2. The suspension type according to claim 1, wherein two right and left gears meshing with each other and the sector gears of the left and right suspension arms are respectively meshed with each other, and one of the two gears is rotationally driven. Transport device. 5. A rotating shaft connected to the traveling shaft is connected to a rotating shaft of the suspension arm by a bevel gear at a bending portion of the suspension arm and extends to the rotating shaft of the suspension arm, and a bevel gear is provided at the extended end. By engaging with a bevel gear that is coupled to and rotates independently of the rotation of the suspension arm coaxially with the rotation axis of the suspension arm, and rotationally driving the shaft of the bevel gear coaxial with the rotation axis of the suspension arm. The suspended transfer apparatus according to claim 1, wherein the traveling wheels are rotated. 6. The suspension according to claim 1, wherein a receiving wheel that rotates in contact with the lower surface of the lower flange of the beam is provided in the vicinity of the running wheels at the front and rear ends so as to be able to move forward and backward from the machine frame. Suspended transfer device.