JPH0459468A - Working bogie with safety device - Google Patents

Abstract

PURPOSE:To invariably perform the inspecting work for a rail easily and safely by providing a working bogie supported and guided by the rail suspended above via multiple trolleys. CONSTITUTION:A working bogie supported and guided by a rail 1 has a pair of front and rear trolleys 6 on a work bench 5. A worker rides on the work bench 5 via a ladder 9 and inspects the rail 1, yokes 3 and a beam 2 within the movable range on the work bench 5. When the worker grasps the rail 1 to apply a force in the pulling or pushing direction, reaction is generated on the working bogie 4, and the bogie 4 is run with this reaction. Running wheels 13 are rolled on the rail 1, guide rollers 15 are guided on the side face of the rail 1, thus the working bogie 4 is stably run. The action range is changed by this running, and the desired work is performed.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is employed, for example, to inspect rails installed on the ceiling side for supporting and guiding self-propelled carts immediately after installation or periodically. This invention relates to a work trolley with a safety device.

BACKGROUND OF THE INVENTION Conventionally, the above-mentioned rail inspection work has been carried out by a worker climbing onto a workbench installed below the rail and changing his position by walking on the workbench.

Problems to be Solved by the Invention According to the above-mentioned conventional method, the worker must look up at the rail and extend his arms upwards, which not only makes it difficult to perform, but also tends to cause fatigue. Furthermore, it is not easy to inspect parts above the rails, such as beams and yoke members for constructing the rails. Further, the work platform is not necessarily installed along the entire length of the line, and therefore inspection work at the cutout is dangerous and cannot be easily performed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a work cart with a safety device that allows inspection work on rails to be carried out easily and safely at all times.

Means for Solving the Problems In order to achieve the above object, a work trolley with a safety device of the present invention includes a work trolley that is supported and guided by a plurality of trolleys on a rail installed above, and the trolleys: The trolley body has running wheels that can be freely placed on the rail, and an arm rod that extends outward in the running direction is provided on the trolley body at at least one end in the running direction so as to be swingable up and down,
A guide member that can come into contact with the upper surface of the rail is provided at the free end of the arm rod, and a brake body that comes into contact with the traveling wheel when the arm rod swings downward beyond a predetermined amount is provided in the middle of the arm rod. ing.

Effects According to the configuration of the present invention, a worker riding on the work trolley can perform various inspection operations within a walkable range on the work trolley. At this time, by setting the level of the work surface (floor surface) appropriately, the worker can perform inspection work on rails, yokes, beams, etc. in a stable posture. By running the work cart, inspection work can be performed by sequentially changing the work range. For example, when a rail is being constructed and is missing part way, the leading guide member will fall down at the missing part, causing the arm rod to swing downward and the brake body to hit the traveling wheel. This allows the work truck to be stopped by braking.

Example An embodiment of the present invention will be described below based on the drawings.

1 is a rail for supporting and guiding self-propelled carts, etc., and beam 2
It is placed below. This rail 1 is constructed at a predetermined level on the ceiling side by connecting the lower end of a yoke 3, which is vertically suspended from an appropriate position in the length direction of the beam 2, to one side. The work trolley 4 supported and guided by the rails 1 has a pair of front and rear trolleys 6 on the upper part of the work platform 5. The workbench 5 is
Floor board 7, lattice-shaped side frame 8, and gangway 9 for getting on and off
A connecting bracket 10 is attached to the upper part of the front and rear side frames 8 at the center in the width direction. The trolley 6 includes a trolley main body 11 located on the other side of the rail 1, a wheel axle 12 protruding from the top of the trolley main body 11 in one direction, and a wheel shaft 12 that is freely rotatable on the wheel axle 12. A traveling wheel 13 that is attached and can be freely placed on the rail upper surface 1a, a pair of brackets 14 that protrudes in one direction from the upper and middle portions of the trolley main body 11, and a pair of brackets 14 that are attached to these brackets 14 and The trolley body 11 is composed of a guide roller 15 that can freely come into contact with the side surface of the rail 1, and the lower part of the trolley body 11 is connected to the bracket 10 via a vertical pin 16 so as to be relatively rotatable. A support plate 2 extending upward from the upper end of the trolley body 11 located on the gangway 9 side
5 are arranged in series, and a left-right direction shaft 17 is attached to this support plate 25. The arm rod 18 whose base end is supported by the left-right shaft 17 is vertically swingable and extends forward toward the outside in the running direction. A guide roller 21 is connected to the free end of the arm rod 18 via a bracket 19 and a left-right pin 20.
is attached to freely rotate, and this guide roller 21 is an example of a guide member that can freely come into contact with the rail upper surface 1a. And between the upper bracket 14 and the arm rod 18, the arm rod 18
A spring 22 is provided which urges the guide roller 21 to move downward and press the guide roller 21 against the upper surface 1a of the rail. Furthermore, a bracket 23 is hung from the base of the arm rod 18, and this bracket 23
Brake body 24 facing the traveling wheel 13 on the rear surface of
has been established. Here, the brake body 24 is the guide roller 2
When the running wheel 1 is in contact with the rail upper surface 1a,
3, and comes off the rail upper surface 1a, and the arm rod 1
8 is set so as to come into contact with the traveling wheel 13 when it swings downward more than a predetermined amount.

Next, inspection work for the rail 1 and the like in the above embodiment will be explained.

A worker gets on the workbench 5 via the gangway 9. Then, within the movable range on the workbench 5, rail 1, yoke 3
, inspect beam 2, etc. This inspection is performed on various aspects such as painting and welding. After completing the inspection within the above-mentioned range, the operator grasps the rail 1 and applies force in the pulling or pushing direction. This causes a reaction force to be generated on the work cart 4, and this reaction force becomes a running force to cause the work cart 4 to travel. This traveling is performed stably by the traveling wheels 13 rolling on the rail 1 and the guide rollers 15 being guided by the side surface of the rail 1. Further, the guide roller 21 is rolling on the rail upper surface 1a, and therefore the brake body 24 is spaced apart from the traveling wheels 13. This movement changes the range of action, and the intended work is performed after stopping.

During the above-mentioned work, for example, when the rail 1 is being erected and the rail 1 is missing from the middle, the leading guide roller 21 will fall down at the missing part while traveling. Then, the arm rod 18 swings downward around the left-right axis 17 due to the elastic force of the spring 22, thereby bringing the integrally moving brake body 24 into pressure contact with the traveling wheel 13. As a result, the traveling wheels 13 are braked and the work cart 4 is stopped, thereby preventing the traveling wheels 13 from coming off the rails 1 and ensuring the safety of the worker.

In the above embodiment, a safety device consisting of an arm rod 18, a guide roller 21, etc. is provided at the front of the work cart 4, but this is also provided at the rear as shown by the imaginary line in FIG. (
It may also be configured to cope with the problem of backward movement).

In the above embodiment, the guide roller 21 is shown as the guide member, but this may also be a sliding body that can freely slide on the upper surface 1a of the rail.

Further, in the above embodiment, the work cart 4 is moved by hand, but it may be equipped with a simple running drive device.

As shown in the above embodiment, by using the spring 22, the downward swinging of the arm rod 18 and the contact movement of the brake body 24 can be performed reliably and smoothly, but in this case, the spring 22 is omitted, A sufficient weight on the arm rod 1g side may be used to sufficiently perform the downward swing.

Effects of the Invention According to the present invention having the above configuration, by using a work cart that can freely travel while being guided by the rail, inspection work on the rail and its vicinity can be carried out in a stable posture over the entire length of the line, and the worker can This allows you to easily perform a wide range of inspection work with less fatigue. In addition, if there is a defect in the rail, it can be detected in advance and the work cart can be automatically stopped, thereby preventing the work cart from coming off the rails and ensuring safe inspection work at all times. be able to.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, the first being a side view and the second being a side view.
The figure is a front view, FIG. 3 is a side view of the main part, and FIG. 4 is a rear view of the same. 1...Rail, 1a...Rail top surface, 2...Beam,
3... Yoke, 4... Work trolley, Death... Work bench, 6
...Trolley, 7...Floor plate, II...Trolley body,
I3... Running wheel, I6... Vertical pin, 17...
Left and right axis, 18... arm rod, 21... guide roller (
guide member), 22... spring, 24... brake body. Agent Yoshihiro Morimoto Diagram Z No. 4 Cause Z

Claims (1)

[Claims] 1. A work trolley supported and guided via a plurality of trolleys is provided on a rail installed above, and the trolley has running wheels on the trolley body that can be freely placed on the rail, and at least one end in the running direction. The trolley body of the section is provided with an arm rod that extends outward in the traveling direction so as to be able to swing vertically, and a guide member that can freely come into contact with the upper surface of the rail is provided at the free end of the arm rod, and a guide member that can freely come into contact with the upper surface of the rail is provided in the middle of the arm rod. A work cart with a safety device, characterized in that a brake body is provided that comes into contact with the traveling wheel when the arm rod swings downward beyond a predetermined level.