JPH0312471Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a welding travel device that travels along a guide rail provided along a joint of pipes or the like.

[Prior Art] Conventionally, welding traveling devices include Japanese Patent Publication No. 58-28029 and Japanese Patent Publication No. 61-25476. Tokko Akira
What is described in Japanese Patent No. 58-28029, as shown in FIG.
Movable arms 9, 9 are pivotally attached to the lower left and right sides of one end wall of the movable arm 9, a pressure wheel 24 is pivoted to the movable arm 9, and a screw rod 33 is attached to the tip of the movable arm 9.
is attached to the shaft, and a screw rod 33 is attached to the other end of the carriage body 2 with a nut 37.
To attach this welding traveling device to the guide rail 41, two nuts 37 are rotated, and the two left and right movable arms 9 are rotated laterally as shown by the arrows. .

What is described in Special Publication No. 61-25476 is
As shown in FIG. 7, mounting shafts 50, 50 are provided at both ends of the carriage body 2 to protrude and move up and down, and a side frame 51 with a pressure wheel 24 mounted on the shaft 50 is attached. The side frame 51 is slidably fitted, and the side frame 51 is attached to the mounting shaft 5 with screws 52.
Further, the threaded rods 33 attached to the left and right mounting shafts 50 are inserted into the carriage main body 2 and the nuts 37 are screwed together.
0 upward, pull up the side frame 51 and the other side frame 53, and pressurize the wheel 2.
4 is brought into pressure contact with the lower surface of the guide rail 41.

[Problem that the invention attempts to solve]

The conventional welding traveling device shown in FIGS. 6 and 7 is a welding traveling device that is formed in a small size and can accurately travel along a guide rail 41.

However, in order to attach these welding traveling devices to the guide rail 41, the one in FIG.
By operating the two nuts 37, the two movable arms 9
In addition, in the case shown in FIG. 7, two screws 52 and two nuts 37 are operated, and the side frame 5
1 in the lateral direction, and the welding traveling device is inserted from the lateral direction.
It must be placed on top of 1. Therefore,
The work of mounting and removing the welding traveling device on the guide rail 41 is troublesome, and is particularly difficult to operate in a narrow space.

This invention was made in view of the above matters,
The technical challenge is to create a welding travel device that is easy to install and remove.

[Means for solving problems]

The present invention is a device for welding a workpiece while running on a guide rail 41 attached near the welding line of the workpiece, and is equipped with devices necessary for welding such as a welding torch and welding wire. a traveling truck 1; drive wheels 4 for driving the traveling truck 1;
In a device having a pair of pressure wheels 24 that press the collar 42 of the guide rail 41 between the drive shaft 4, guide grooves 18 are provided oppositely on both sides of the traveling bogie 1, and the end portions of the guide grooves 18 are provided oppositely. are respectively formed in the bent portions 19 and into guide grooves 18 that widen toward the end, and are provided with a pair of clamp arms 22 that slide along the guide grooves 18.
2 is provided with a pressurizing wheel 24, a pin 23 and a guide pin 26 are provided at intervals, the pin 23 and guide pin 26 are slidably fitted into the guide groove 18, and the pair of clamp arms 2
One movable arm 9 for sliding the clamp arm 22 was provided and connected to the clamp arm 22, and the movable arm 9 was equipped with a tightening device 29 to serve as a traveling device for welding.

[Effect]

In the present invention, as shown in FIG.
2 slides along the guide groove 18, and the guide pin 2
6 passes through the bending part 19, the lower ends of the pair of clamp arms 22 widen in the width direction, and the pressure wheel 24 also spreads beyond the width of the guide rail 41.
The welding traveling device can now be attached to or removed from the guide rail 41.

Next, as shown in FIG. 2, tighten the nut 37 of the welding traveling device placed on the guide rail 41,
When the clamp arm 22 is slid up and down via the movable arm 9, the guide pin 26 of the clamp arm 22 is guided by the bent part 19 of the guide groove 18, and the lower end of the clamp arm 22 is drawn inward, and the force is applied. The pressure wheels 24 come into contact with the flanges 42 on both sides of the guide rail 41, the drive wheels 4 and the pressure wheels 24 clamp the flanges 42, and the welding traveling device is ready to travel along the guide rails 41.

〔Example〕

1 to 5 show an embodiment of the present invention, in which a traveling trolley 1 is equipped with a carriage body 2, and is equipped with equipment necessary for welding such as a welding torch and welding wire (not shown). A drive wheel 4 connected to a drive shaft 3 is provided on the lower side of the carriage body 2, and a fixed arm 8 is fixedly provided on the carriage body 2, and a movable arm 9 is provided at a position closer to the outside of the fixed arm 8. The central part of the connecting arm 12 is pivoted 14 to the distal end of the movable arm 9, and the slide key 13 is attached to the fixed arm 8 through a horizontally long hole formed in the fixed arm 8. When the movable arm 9 is fitted in, the movable arm 9 rotates around the shaft attachment 11 to compensate for changes in the radial length.

The connecting arm 12 is formed in a U-shape, and a clamp arm 22 is rotatably attached to both ends with a pin 23. This clamp arm 22 is formed in an inverted T-shape, and two pressure wheels 24 are attached to the lower end. The pressure wheel 24 is provided so as to be able to abut against the lower surface 43 of the flange 42 of the guide rail 41 on which the drive wheel 4 comes into contact, and the drive wheel 4 and the pressure wheel 24 and the collars 42 on both sides of the guide rail 41.
It is formed so that it can be compressed.

Further, guide members 17 are fixedly provided on both sides of the carriage main body 2.
7 are provided with guide grooves 18, 18 that extend downward, respectively, and the lower portions of the guide grooves 18 are respectively formed into outwardly bent portions 19 to form the guide grooves 18 that widen toward the end. Both ends of a pin 23 on which the clamp arm 22 is pivoted are slidably fitted into the upper part of the guide groove 18.
Both ends of a guide pin 26, which is provided in the center of the clamp arm 22 at a distance from the pin 23, are slidably fitted into the lower part of the clamp arm.

Then, the lower end of the clamp arm 22 rotates inward at the position where the guide pin 26 is pulled up.
The lower end of the clamp arm 22 is configured to rotate outward at the position where the guide pin 26 is pushed down.

Further, a shaft 30 is fitted to the outer end of the fixed arm 8, and is stopped by a C-shaped retaining ring 31 so as not to escape, and a shaft 32 is similarly fitted to the outer end of the movable arm 9. ing. A screw rod 33 is inserted into and fixed to this shaft 30, and furthermore, the screw rod 33 passes through the shaft 32 of the movable arm 9. Furthermore, the screw rod 33 protruding from the upper surface of the movable arm 9 has a spring seat 35 and a spring 34. - A round nut 36 and a hexagonal nut 37 are inserted and screwed to form the tightening device 29 so as to press the outer end of the movable arm 9 downward via the spring 34.

Further, in the above embodiment, the movable arm 9 and the connecting arm 12 are formed separately, but it is also possible to form the movable arm 9 and the connecting arm 12 integrally. It is also possible for the pin 26 to be formed integrally with the clamp arm 22. A bent portion is formed at the upper end of the guide groove 18, and when the clamp arm 22 is slid upward, the upper end of the clamp arm 22 rotates outward, and as a result, the lower end of the clamp arm 22 moves inward. It is also possible to form the guide rail 41 so as to rotate and come into contact with the lower surface 43 of the collar 42 of the guide rail 41.

[Effect of idea]

The present invention rotates a pair of clamp arms 22 by operating one movable arm 9,
Since all the pressurizing wheels 24 can be rotated to the working position and the non-working position, the operation is extremely easy and there is no problem in operating in a narrow place.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention in an inactive state, Fig. 2 is a front view of its operating state, Fig. 3 is a plan view thereof, Fig. 4 is a side view thereof, and Fig. 5 is its front view. FIG. 6 is a perspective view of a conventional example, and FIG. 7 is a plan view of another conventional example. DESCRIPTION OF SYMBOLS 1... Traveling trolley, 4... Drive wheel, 9... Movable arm, 18... Guide groove, 19... Bent part, 22
... Clamp arm, 23 ... Pin, 24 ... Pressure wheel, 26 ... Guide pin, 29 ... Tightening device, 41 ... Guide rail, 42 ... Tsuba.

Claims (1)

[Claims for Utility Model Registration] A device for welding a welding object while running on a guide rail 41 attached near the welding line of the welding object, which is necessary for welding a welding torch, welding wire, etc. In the device, the device includes a traveling truck 1 equipped with a device, a driving wheel 4 for driving the traveling truck 1, and a pair of pressurizing wheels 24 for pinching the collar 42 of the guide rail 41 between the driving shaft 4. , Guide grooves 18 are provided oppositely on both sides of the traveling truck 1, and the ends of the guide grooves 18 are formed into bent portions 19, respectively, to form the guide grooves 18 that widen toward the end, and along the guide grooves 18. A pair of sliding clamp arms 22 is provided, and this clamp arm 2
2 is provided with a pressurizing wheel 24, a pin 23 and a guide pin 26 are provided at intervals, the pin 23 and guide pin 26 are slidably fitted into the guide groove 18, and the pair of clamp arms 2
This welding traveling device is provided with one movable arm 9 for sliding a clamp arm 22 and connected to a clamp arm 22, and a tightening device 29 is attached to this movable arm 9.