JPS6390396A - Welding truck - Google Patents

Abstract

PURPOSE:To facilitate the attachment and detachment of a traveling roller and to enable to travel running over even the adhesive body onto a rail by pressing the roller to the rail with a constant force by a spring, and forming the combustion to vary the roller position by moving a supporting rod with the turn of a handle. CONSTITUTION:The position of a pressing roller 4 is changed by moving the position of a supporting rod 9 by a lever 13 with a cam to instantaneously perform the attachment and detachment of a welding truck 1 onto a rail 2. The pressing roller 4 is pressed to the rail 2 by the spring 7 on the above of the supporting rod 9. The truck thus travels with the pressing roller 4 running over the adhesive body on the rail 2 and the deformation thereon, even if any.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a welding cart that is applied to horizontal or vertical welding of chimneys and the like.

[Conventional technology]

Traditionally, steel plates for chimneys, ships, tanks, etc. were laid horizontally.

When automatically welding in a vertical position, etc., a system is generally used in which a welding cart 1 carrying a welding torch 18 pointing at a welding line 17 of a steel plate 16 runs on a rail 2, as shown in the perspective view of FIG. In this case, as shown in the side view in FIG. Rotate and run.

However, in such a device, the roller 3
If the welding cart 1 is fixed at a fixed position on the welding cart 1, it is not possible to attach or detach the welding cart 1 at a midway position on the rail 2, so the welding cart 1 must be mounted from one end of the rail 2, which increases the length of the welding cart 1. In the case of shaku rails, workability is poor. In particular, in a structure in which the rail 2 is closed, such as with circumferential welding, an opening is intentionally provided for mounting the welding trolley 1, and after the welding trolley 1 is mounted, the rails 2 are connected again to form a single circumferential rail. There are some inconveniences that cannot be avoided.

In addition, as a countermeasure for the above-mentioned disadvantage, when the advancing and retracting position of the roller 3 is made adjustable with the roller adjustment screw 20 as shown in Fig. 5, the distance between the facing rollers B is widened by adjusting the screw 20. This makes it possible to attach and detach the trolley 1 from the rail 2, but there is an inconvenience that it takes a lot of time to adjust the screws of the plurality of rollers.

Furthermore, even if the rollers 6 are fixed or screw-adjustable, the rollers 6 are spaced at regular intervals while running on the rail 2.
If there is spatter, dirt, etc. on the rail 2, or if the rail 2 is slightly deformed, there is a drawback that the vehicle cannot run.

[Problem that the invention seeks to solve]

The present invention was proposed in view of these circumstances, and
To provide a welding cart in which the running rollers of the welding cart can be easily and reliably attached to and removed from both side edges of the rail at any position, and in which the running rollers can run over objects attached to the rail or deformation of the rail. purpose.

[Means for solving problems]

To this end, the present invention provides a welded bogie that travels by sandwiching both side edges of the rail with a plurality of pairs of rollers disposed opposite to each other on both sides of the CC bogie axis line on the rear surface of the bogie, and at least one side of the roller pair. a centrally pivoted arm which pivotally supports a plurality of rollers at one end and whose other end is externally fitted on a support rod parallel to the truck axis; a spring that presses the end of the arm to engage the roller with the rail; and a spring that is fitted onto the support rod and presses the support rod in a direction to release the engagement between the roller and the rail. and a locking mechanism handle which is rotatably attached to the end of the support rod and engages the roller and the rail against the support rod pressing spring.

[For production]

The welding vehicle A of the present invention has the above-mentioned configuration, and when the trolley is mounted on the rail, the roller is always pressed against the rail by a spring with a constant force, and the handle with a locking mechanism is rotated. By moving the support rod, the roller position changes accordingly, making it easier to attach and detach the trolley.

〔Example〕

An embodiment in which the present invention is applied to a welding cart for horizontal welding will be explained with reference to the drawings. Fig. 1 is a rear view showing the state in which the welding cart is mounted on rails, and Fig. 2 is a rear view showing the welding cart mounted on the rails. FIG. 3 is a rear view showing a state in which the cart is about to be removed or placed on a shelf, and FIG.

First, in FIG. 1, two fixed rollers 3 are provided on the back side of a welding cart 1 parallel to the cart axis at a predetermined interval, and the two fixed rollers 3 face each other with a rail 2 in between. Two pressing rollers 4 are provided at the positions, and when the illustrated welding cart 1 is mounted, the fixed rollers 3 and the pressing rollers 4 sandwich and press the upper and lower side edges of the rail 2 in their circumferential grooves. Here, the pressing roller 4 is pivotally supported at its center by one end of an L-shaped arm 5 which is pivotally supported on the welding cart 1 at a fulcrum 6, and the other end of the arm 5 is supported by a support rod arranged on the axis of the cart. The roller 4 is pressed against the rail 2 by the spring 7 fitted on the outside of the rail 9, and is pressed to the right in the drawing as a result. The pressing force of the spring 7 can be adjusted by changing the position of a spring force adjusting double nut 80 fitted to the support rod 9 on the left side thereof.

The support rod 9 is held in a fixed position by a rod spring 10 and a cam-equipped knot 13.
0 is compressed to a constant dimension by a support stand 11 attached to the truck 1 and a double nut 12 for adjusting spring force, and its rigidity can be increased or decreased by adjusting the position of the double nut 12.

Next, in FIG. 2, when the cam-equipped nodle 16 attached to the end of the operating rod 9 is rotated by 90 degrees,
The support rod 9 is moved to the left by the pressing force of the spring 10. Therefore, the double nut 14 for arm support
The upper end is moved to the left, the arm 5 is rotated around the fulcrum 6, the pressing roller 4 is released from the rail 2, and the welding cart 1
can be removed from rail 2.

In addition, when there is some deposit on the rail 2 and the rail 2 is slightly deformed, as shown in FIG. 3, when the roller 4 moves over the deposit or deformation 15, Since it is pressed under normal pressure by the force of the spring 7, derailment does not occur, and after riding over the deposit 15, the original pressure returns again.

According to such a device, by moving the position of the support rod 9 with the lever 13 with a cam, the pressing is performed by changing the position of the roller 4, and the attachment and detachment of the welding cart 1 to and from the rail 2 is performed with one touch, and the pressing is performed by moving the position of the roller 4. 4 is pressed against the rail 2 by the spring 7 on the support condo 9, so even if there is an adhesion on the rail 2 or deformation of the rail 2, the rollers 4 can overcome the pressing and the cart can run.

〔Effect of the invention〕

In short, according to the present invention, in a welding cart that runs with the rail side edges sandwiched between a plurality of roller pairs disposed on the rear surface of the cart facing each other on both sides of the cart axis, a plurality of roller pairs on at least one side of the roller pairs are provided. The rollers are each pivoted at one end, and the other end is attached to the trolley axis ((a central pivot arm is externally fitted on a parallel support rod, and an arm end is externally fitted on the support rod facing each other. a spring that presses and engages the roller with the rail by pressing the end of the arm; a spring that is fitted onto the support rod and presses the support rod in a direction to release the engagement between the roller and the rail; A locking mechanism that is rotatably attached to the end of the support rod and engages the roller and the rail against the support rod pressing spring is provided. The present invention provides a welded cart which can be easily and reliably attached to and removed from both side edges of the rail at any position, and which allows the traveling rollers to run over and over even if there is something attached to the rail or the rail is deformed. Above all, it is extremely useful.

[Brief explanation of the drawing]

FIG. 1 is a rear view showing a state in which a welding cart is mounted on a rail in an embodiment in which the present invention is applied to horizontal welding;
Fig. 2 is a rear view showing a state in which the welding cart is about to be removed from or placed on the rail, and Fig. 3 is a rear view showing a state in which there is deposits on the rail (C) while the welding cart is running. Fig. 4 5 is a perspective view of a conventional welding cart, and FIG. 5 is a side view of the main parts thereof. 1... Welding cart, 2... Rail, 3... Fixed roller, 4... Roller for pressing, 5 ...Arm, 65
0. Fulcrum, 7... Spring, 8... Double nut for adjusting spring force, 9... Support rod, 10... Spring for rod, 11... Support stand, 12... Double nut for adjusting spring force, 13...Kino/endle with cam, 14...Double nut for arm support, 15...Adherence, 16...
Steel plate, 17... Welding line, 18... Welding torch, 19
...Magnet, 20...Roller adjustment screw.

Claims (1)

[Scope of Claims] A welding truck that travels by sandwiching both side edges of the rail with a plurality of pairs of rollers disposed opposite to each other on both sides of the truck axis on the rear surface of the truck, wherein a plurality of roller pairs on at least one side of the roller pairs are provided. a centrally pivoted arm which pivotally supports the rollers at one end and whose other end is externally fitted onto a support rod parallel to the truck axis; and an arm which is externally fitted onto the support rod opposite the arm end. a spring that presses and engages the roller with the rail by pressing the support rod; a spring that is fitted onto the support rod and presses the support rod in a direction to release the engagement between the roller and the rail; A welding cart, characterized in that it is provided with a handle with a locking mechanism that is rotatably attached to an end portion and engages the roller and the rail against the support rod pressing spring.