JPH07252086A - Overhead traveling car - Google Patents

Abstract

PURPOSE:To regulate the shaking of an article in time of its being conveyed as well as to make it preventable from falling off at a time when a hanging hook is installed in a ramp of an overhead traveling car, thereby conveying the article. CONSTITUTION:A rail 3 is installed in a ceiling part, while a hanging hook 13 is hangingly installed in a ramp 10 of an overhead traveling car A running along this rail 3, and this ramp is made up so as to travel together in supporting an article 15 on the hook 13, and simultaneously a center rest device 17 regulating this conveying article 15 from both sides is installed in this ramp 10. This center rest device 17 is projected to the lower part at both sides than the ramp 10, and it is formed shiftably for opening or closing in the traveling direction, and in this case, a drop preventing part 17a to be projectingly installed inwards is installed in a lower part of the center rest device 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a hanging hook is provided on an elevator of an overhead traveling vehicle so that an article can be conveyed, and when the article is conveyed, shaking of the article is regulated.

[0002]

2. Description of the Related Art Conventionally, an overhead traveling vehicle has been constructed so as to be able to travel in a building such as a warehouse or a factory, the overhead traveling vehicle is provided with a hanging hook, and the hanging hook is used to support and carry a load. Also known is a structure for carrying the hoist so that the hoist can slide on a horizontally arranged girder so that the load is supported by a hook and moved up and down by the hoist to be conveyed.

[0003]

However, in the structure in which the load is supported on the hanging hook of the overhead traveling vehicle and the load is supported on the hook of the hoist, the articles being hung at the time of acceleration or deceleration of the transportation are It shakes and the luggage comes into contact with an object in the vicinity of another road, or the braking distance of the overhead traveling vehicle is lengthened when decelerating so that it cannot stop at a fixed position, or the luggage shakes when stopped and is dropped to the correct position. There is a problem that it is not possible to do so, or in the case of a hoist, the operator has to stop the shaking, so that it is dangerous in the case of a heavy object. In addition, there is a risk that the luggage may drop if an abnormality occurs in the hanging hook during the transportation of the luggage.

[0004]

SUMMARY OF THE INVENTION The problems to be solved by the present invention are as described above. To solve the problems, an overhead traveling vehicle having a track attached to the ceiling and traveling along the track is provided. The hanging hook is hung on the lifting table of the above, and the hook is configured to run while supporting the article, and the lifting table is provided with a shake preventing device for restricting the conveyed article from both sides. It is configured such that it projects downwards from both sides of the lift table and can be opened and closed in the traveling direction, and a drop prevention portion that projects inward is provided at the bottom of the shake prevention device.

[0005]

By using such a means, when suspending an article, the elevating table 10 is lowered and the hook 1
3 is lowered to the locking portion of the article 15. Before this lowering operation, the anti-sway device 17 is opened to both sides in the front-back (advancing) direction so as not to interfere with the lowering of the elevating table 10, and the hook 13 is lowered to lock and raise the article 15. At the rising end, the anti-sway device 17 is closed inward to sandwich the article and prevent the article from shaking during traveling. If the article should fall, the article can be received by the fall prevention portion 17a provided at the bottom of the shake prevention device 17.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a side view of an overhead traveling vehicle provided with the anti-sway device of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is an anti-sway device. FIG. 4 is a plan view showing the opening / closing mechanism of FIG. 4, and FIG. 4 is a plan view showing another embodiment of the same.

The overall structure of the overhead traveling vehicle will be described with reference to FIGS. 1 and 2. A suspension pipe 1 is provided horizontally on the ceiling of a building, and a rail 3 serving as a track is laid on the suspension pipe 1 via a rail hanger 2. The traveling part 4 provided on the upper portion of the main body 5 of the overhead traveling vehicle A is fitted to the rail 3, and the traveling part 4 includes a driving part 4a and a driven part 4b, and a traveling motor is installed in the driving part 4a. Provided to transmit power to the drive wheels, and the driven unit 4
The driven wheels are arranged and the traveling motor is driven to allow the driving wheels and the driven wheels to travel on the rail 3. Then, sensors 6 are arranged on the front and rear surfaces of the main body 5 to detect so as not to collide with an overhead traveling vehicle traveling in the front and rear, and bumpers 7 and 7 are projected to the front and rear of the upper portion of the main body 5,
It is designed so that the impact in the event of a collision can be mitigated.

A support base 9 accommodating an anti-sway opening / closing mechanism and a lift base lift mechanism is provided at the bottom of the main body 5, and a lift base 10 is disposed on the lower surface of the support base 9. The lift base 10 includes a belt 11
.. can be raised and lowered by hoisting and rewinding 11 ..., The upper ends of the wires 12, 12, ... Are fixed to the lower surface of the elevating table 10, and the wires 12, 12 ,. Hang it down and use 3 wires for front and rear 12, 12.
... Lifting hooks 13 and 13 are fixed to the lower ends, respectively, so that luggage can be supported by a pair of front and rear hooks 13 and 13. Wires 14 and 14 hung on the upper surface of luggage 15 are attached to the hooks 13 and 13. It can be locked. However, the numbers, arrangements, and configurations of the wires 12 and the hooks 13 are not limited, and the wires 12 and the hooks 13 may be provided one by one or more to support the luggage.

The operator W performs the raising / lowering operation of the raising / lowering table 10 and the locking work to the hooks 13, and the raising / lowering operation operates the switch of the control box 16 provided near the lifting (or lowering) work position. I can do it by doing things. However, the control box 16 is designed to be able to send and receive signals to and from a controller (not shown) in a wired or wireless manner so that the overhead traveling vehicle A at the working position can receive the signals.
The lifting table 10 of FIG.

The anti-sway device, which is an essential part of the present invention, includes an anti-sway device 17 below the front and rear lower portions of the support base 9.
The anti-sway device 17 is a plate body having an L-shape in a side view, and the lower L-shaped part is inwardly projected as a fall prevention part 17a so that the article 15 drops when the anti-sway device 17 is closed. Even so, the front and rear edges can be received. However, the fall prevention portion 17a is arranged so as to be located below the lower end of the article when the article is suspended and conveyed. Further, a cushioning member 19, 19 made of rubber, sponge or the like is attached to the inner side surface of the anti-sway device 17,
The item 15 is prevented from being damaged when the item 7 is closed.

The upper portions of the shake-preventing devices 17 are inserted into the support base 9 and are closed by the opening / closing mechanism at the time of conveyance, and opened at the time of hanging or hoisting, as shown in FIG. That is, the support rails 21 and 21 are laterally extended in the front-rear (advancing) direction on the left and right sides of the support base 9,
Sliding bodies 22 and 22 are fitted to the support rails 21 and 21, and front and rear anti-sway devices 17 and 17 are fixed to the sliding bodies 22 and 22, respectively. The sliding bodies 22, 22 are connected to the springs 23, 23 and are urged to slide toward the center side, that is, the sway stoppers 17, 17 are urged to be closed, and the open / close drive unit should fail. Even if it is closed to protect the article, pulleys 24, 24 are rotatably arranged on the front and rear outer sides of the sliding bodies 22, 22, and the winder 2 is arranged at the center.
5 is arranged, the winding machine 25 and the sliding bodies 22 and 22 are connected by the wires 26 and 26, and the winder 25 is operated to wind up the wires 26 and 26 when the anti-sway device 17 and 17 are opened. I have to.

Therefore, when the lifting table 10 is lowered to convey the article 15, first, the winder 25 is operated to open the shake preventing devices 17 and 17 in both front and rear directions, and then the lifting table 10 is lowered. To be done. Then, when it is lowered to the position of the wire 14 that locks the luggage 15 on the mounting table 27, it is stopped by the operation of the control box 16, and the hook 1
3 is hooked on the wire 14 to raise the lifting table 10. When the lifting table 10 reaches the rising end, the lifting is stopped, the drive of the winder 25 is stopped, and the sway stop devices 17 and 17 are slid inward and closed by the urging force of the springs 23 and 23, The front end and the rear end of the article 15 are brought into contact with the cushioning members 19 and 19, and the article 15 is clamped and fixed by the shake preventing devices 17 and 17. However, the winder 25 is provided with a damper so that it cannot be rapidly rewound.

The swaying devices 17, 17 regulate the sway of the article 15 during acceleration or deceleration when the article 15 is nipped and conveyed. It should be noted that although the shake-preventing devices 17 and 17 try to slide forward or backward due to the inertia of the article 15 at the time of conveyance, a moment is generated around the upper end of the shake-preventing device 17, so that the forward-backward sliding is not possible. It ’s difficult,
The urging force of the spring 23 always regulates the opening direction to prevent shaking. Further, a member having a large frictional resistance is used for the surface of the cushioning member 19 to prevent shaking in the left and right directions. If the conveyed articles have the same shape, if the inner surface shape of the cushioning member 19 is configured to match the outer shape of the article, the shake preventing devices 17 can be configured to open and close in the left-right direction.

Further, as another embodiment of the opening / closing mechanism of the anti-sway device 17, 17, as shown in FIG.
22 Two pairs of pulleys 30, 30, 31, 31 on the front and rear sides
And the belts 32 and 33 are wound between the pulleys 30, 30, 31 and 31, respectively, and the fixing portions 32a and 33a of the belts 32 and 33 are connected to the sliding bodies 22 and 22, respectively. It is also possible to configure the motors 30 and 31 to be driven, and to open and close the anti-sway devices 17 and 17 by rotating the belts 32 and 33 forward and backward. However, when the length of the article 15 in the front-rear direction is different from the center, slippage occurs between the pulleys 30 and 31 and the belt 32 during the closing operation, and the cushioning members 19 and 19 reliably contact the article 15. And

[0015]

Since the present invention is constructed as described above, it has the following effects. That is, since the article supported by the hook is regulated by the anti-sway device, the posture of the article during transportation is stabilized, and the article that cannot be tilted is suspended. As a result, the range of articles to be conveyed is expanded, and the articles can be externally protected by the shake prevention device. Further, since the shaking can be restricted by the shaking prevention device to carry the object, the traveling speed of the overhead traveling vehicle can be increased, and the carrying efficiency can be improved.

According to the second aspect of the invention, it is possible to regulate the shaking of the article when the anti-sway device is in the closed state, and when it is in the open state, there is no obstruction when raising or lowering the article or when suspending and locking the article. Therefore, even articles of different sizes can be clamped in a closed state to regulate the shaking.

According to the third aspect of the invention, even if the hanging hook should fail, and the article cannot be supported by the hanging hook or is detached from the hook, the article is received by the fall prevention unit and falls. Therefore, the safety of not only the transported articles but also the equipment below can be secured.

[Brief description of drawings]

FIG. 1 is a side view of an overhead traveling vehicle provided with an anti-sway device according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view showing an opening / closing mechanism of the anti-sway device.

FIG. 4 is a plan view showing another embodiment of the present invention.

[Explanation of symbols]

 A Overhead traveling vehicle 3 Rail 5 Main body 10 Lifting table 13 Suspending hook 15 Articles 17 Anti-sway device 17a Fall prevention part

Claims (3)

[Claims] 1. A structure is provided in which a track is attached to a ceiling portion, a hanging hook is hung on an elevating table of an overhead traveling vehicle that runs along the track, and an article is supported by the hook to travel. An overhead traveling vehicle, characterized in that a shaking prevention device for restricting conveyed articles from both sides is provided on the elevating table. 2. The overhead traveling vehicle according to claim 1, wherein the anti-sway device is configured so as to project downward from both sides of the lift table so that it can be opened and closed in the traveling direction. 3. The lower part of the shake prevention device according to claim 1,
An overhead traveling vehicle, which is provided with a fall prevention portion that projects inside.