JPH0327726Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is designed to cut vertical members welded and fixed to a base material while running a traveling trolley equipped with horizontal and vertical cutting torches on a trackless basis. This invention relates to a self-propelled gas cutting device that simultaneously cuts along cutting lines.

Conventional technology The bottom or outer plate of a large ship has a vertical member (longe) having the required thickness and height in the longitudinal direction.
are placed vertically at a required interval, and fillet welding is performed at both end corners where the outer plate and the vertical member meet to provide strength.

An example of the conventional disassembly process will be described with reference to drawings. As shown in FIG. Gas cutting was performed while holding the tip of the crater D almost parallel.

As a result, the operating speed during gas cutting is slow, and when cutting multiple rows of vertical members, it takes a lot of time to cut the first row and then move on to cutting the second row, resulting in extremely poor work efficiency. Moreover, since it is necessary to maintain the cutting distance at a constant distance from the surface of the material to be cut and move it at a constant speed, it requires skill and has the drawback that the operator is highly fatigued and cannot perform uniform gas cutting.

Problems to be solved by the present invention Therefore, the present invention has been developed to attach vertical members to the base material by welding them.
Work efficiency is significantly improved by making it possible to operate a self-propelled gas cutting device that simultaneously cuts base materials and vertical members along required cutting lines while moving a traveling trolley equipped with horizontal and vertical cutting torches. It was designed to be measured.

Measures to solve the problem: A horizontal cutting torch can be mounted horizontally at the required position in front of the side end (vertical member side) of the traveling trolley via a fixing metal fitting.
Attach a vertical cutting torch to a required position at the rear via a fixing bracket so that it can move up and down, and at the same time install a dolly support stand at a required position in front of the rear wheels on the bottom of the traveling dolly, and attach a vertical cutting torch to the side end (vertical member side) of the traveling dolly. Shorten the support rod.
A guide roller mounting frame with a longer rear support rod is installed, and the front and rear guide rollers are attached to the front and rear support rods of the guide roller installation frame, and the traveling bogie is run while rotating the front and rear guide rollers in contact with the side edges of the vertical member. At the same time, gas cutting is performed simultaneously along the horizontal and vertical cutting lines of the vertical member and the base material, and when the traveling truck runs on the base material and the front wheels come off the base material, the truck support rests against the base material. The rear wheels are in contact with each other and are suspended from the base material, and the rear wheels are idled to stop the truck and do not apply any load to the drive motor built into the traveling truck.

Function: To displace the front wheels of the traveling bogie inward at an angle of θ (towards the vertical member) from the traveling line, the rear wheels travel inward with respect to the traveling line of the front wheels, and at the same time displace the front wheels of the traveling bogie from the side edge (towards the vertical member). A guide roller mounting frame with a short front support rod and a long rear support rod is installed on the
The front and rear guide rollers are attached to the front and rear support rods of the guide roller mounting frame, and the traveling bogie runs while rotating the front and rear guide rollers in contact with the side edges of the vertical member. It constantly presses and rotates through the vertical member, and simultaneously runs along the horizontal and vertical cutting lines of the vertical member and the base material while cutting with gas, without separating from the vertical member.

When the front wheel of the traveling trolley comes off the base material, the trolley support base comes into contact with the base material, and with the rear wheel floating above the base material, the rear wheels (including the drive wheels) idle, and the trolley is stopped. Therefore, no load is applied to the drive motor built into the traveling truck, and the motor is not burnt out.

Embodiment An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the self-propelled gas cutting device is equipped with a traveling trolley 1, and At the end (vertical member side), a horizontal cutting torch 2 is installed horizontally at a required position on the front part via a fixing metal fitting 3, and a vertical cutting torch 4 is installed at a required position on the rear part via a fixing fitting 5 so that it can be freely vertically moved. Cylindrical cart supports 11 and 12 are mounted on the base material A at required positions in front of the rear wheels 9 and 10 (one of which is the driving wheel) on the bottom.
The guide roller mounting frame 1 is mounted in a more floating manner and has a shorter front support rod 13a and a longer rear support rod 13b on the side edge (vertical member side) of the traveling truck 1.
3, and the front and rear guide rollers 6, 7 are attached to the front and rear support rods 13a, 13b of the guide roller mounting frame 13.
As shown in FIG. 6A and B, the front and rear guide rollers 6 and 7 are fixed rotatably with wide-flange bolts 6a and 7a and nuts 6b and 7b, and the front and rear guide rollers 6 and 7 are attached to the vertical member B.
Place it on the base material A so that it rotates in contact with the side edge.

The traveling bogie 1 is provided with a front wheel 8, rear wheels 9, 10,
The front wheels 8 have a diameter smaller than that of the rear wheels 9, 10, and can be turned, and one of the rear wheels 9, 10 is used as a driving wheel to move the traveling trolley 1 in the direction of arrow P.

In this case, the front wheels 8 of the traveling truck 1 are displaced inward at an angle of θ (towards the vertical member) from the traveling line P, and the front support rods 13a are attached to the side ends of the traveling truck 1 (towards the vertical member).
A guide roller mounting frame 13 with a shorter length and a longer rear support rod 13b is installed, and the front and rear guide rollers 6 and 7 are installed on the front and rear support rods 13a and 13b of the guide roller installation frame 13, and the front and rear guide rollers 6 are installed. , 7 are rotated in contact with the side edges of the vertical member B. Therefore, the traveling trolley 1 constantly presses and rotates the vertical member B via the front and rear guide rollers 6, 7, and rotates the vertical member B side edges. It travels while simultaneously cutting along the horizontal and vertical cutting lines of the vertical member B and the base material A without coming off the edge.

As shown in Figure 5, the gas cutting work has been completed.
When the front wheel 8 of the traveling bogie 1 comes off the base material A,
The traveling trolley 1 has a tilted position with the front part lowered and the rear part raised, and a cylindrical truck support stand 11 is attached to a required position in front of the bottom rear parts 9 and 10 of the traveling trolley 1.
12 is in contact with the base material A, and the rear wheel (including the drive wheel)
With wheels 9 and 10 floating above the base material A, attach the rear wheels 9,
Since the carriage 10 is idled and the carriage 1 is stopped, no load is applied to the drive motor built into the traveling carriage 1, and the motor is not burnt out.

A worker operating several self-propelled gas cutting devices sequentially removes the self-propelled gas cutting devices that have come off and stopped from base material A, and places the self-propelled gas cutting devices on base material A to which vertical member B has been newly welded. The cutting equipment is set and the gas cutting operations are sequentially started.

More specifically, as shown in FIGS. 6A and 6B, the front and rear guide rollers 6 and 7 are attached to the front and rear support rods 13a and 13b of the guide roller mounting frame 13 using wide flanged bolts 6a and 7a. is,
Since they are rotatably fastened with nuts 6b and 7b, rainwater does not enter the mounting portions of the front and rear guide rollers 6 and 7, preventing corrosion and allowing long-term use.

In addition, the cutting torch fixing fittings 3 and 5 are shown in Fig. 7A.
As shown in B, the traveling bogie 1 includes a flat plate whose central part is bent into an arc shape and has elongated holes 3a and 5a carved in both ends, and a flat plate which is bent into a U shape and has elongated holes 3a and 5a carved therein.
It is used by welding or screwing to the side edge of the

The present invention shows an example of implementation, and is not limited to this embodiment. The cart support base may be prismatic, or a series of angular or round shapes as shown in FIG. 8A, B, C, etc. , semi-circular and other shapes can be devised and used as required.

Effects of the invention Since the invention has the above-mentioned configuration, the self-propelled gas cutting device is run parallel to the vertical member without track, and when the required gas cutting work is completed and the front wheel comes off the base material, the bogie Since the rear wheels are supported in a floating state by the support base, no load is applied to the drive motor connected and built inside the traveling truck, and there is no risk of burnout.

Furthermore, it has had remarkable effects, such as allowing amateurs to easily operate several self-propelled gas cutting devices, saving labor in ship dismantling work, and significantly improving work efficiency. have

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the self-propelled gas cutting device of the present invention. FIG. 2 is a layout diagram of the front and rear wheels and front and rear guide rollers of the traveling trolley of the present invention. FIG. 3 is a side view of a traveling trolley that travels on the base material. FIG. 4 is a front view of a traveling trolley that travels on the base material. FIG. 5 is a side view showing a state in which the traveling truck has come off the base material. FIGS. 6A and 6B are a partial perspective view and a sectional view showing how the guide roller is installed. FIGS. 7A and 7B are perspective views showing fixing fittings of various shapes. FIGS. 8A, B, and C are perspective views showing truck support stands of various shapes. FIG. 9 is an explanatory diagram of conventional gas cutting. 1: Traveling trolley, 2: Horizontal cutting torch, 3: Fixing metal fittings, 4: Vertical cutting torch, 5: Fixing metal fittings, 6:
Front guide roller, 7: Rear guide roller, 8:
Front wheels, 9, 10 rear wheels, 11, 12: trolley support base,
13: Guide roller mounting frame, 13a: Front support rod, 13b: Rear support rod, A: Base material, B: Vertical member, C: Bead, D: Crater, P: Progress line.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A horizontal cutting torch 2 is horizontally freely attached to the lower front position of the side end (vertical member side) of the traveling trolley 1 via a fixing bracket 3, and a fixing bracket 5 is attached to the rear upper surface. At the same time, the vertical cutting torch 4 is attached vertically freely, and the truck supports 11 and 12 are attached to the front of the rear wheels 9 and 10 on the bottom of the traveling truck 1. Guide roller mounting frame 1 with short support rod 13a and long rear support rod 13b
3 is attached, and the front and rear guide rollers 6 and 7 are attached to the front and rear support rods 13a and 13b of the guide roller mounting frame 13, and the front and rear guide rollers 6 and 7 are brought into contact with the side edge of the vertical member B and rotated while moving the bogie. 1. A self-propelled gas cutting device characterized by running a gas cutting device. (2) When the traveling bogie 1 runs on the base material A and the front wheels 8 come off the base material A, the bogie supports 11 and 12
is in contact with the base material A, the rear wheels 9 and 10 are suspended from the base material A, and the rear wheels 9 and 10 are idled to stop the truck 1. Self-propelled gas cutting equipment. (3) Turn the front wheel 8 inward from the travel line p (vertical member side)
A self-propelled gas cutting device according to claim (1) of the utility model registration claim, which is displaced as follows.