JPH0327727Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The invention can be used, for example, in self-propelled gas cutting equipment.
This invention relates to a device that allows a torch head to be moved up and down, which can automatically set the cutting position of the torch head relative to a steel plate to be cut.

<Prior art> In order to cut a vertical member on a base material with a running trolley equipped with a cutting torch (hereinafter abbreviated as "torch"), a torch is attached to the rear upper surface of the running trolley.
A 45° inclined 〓-shaped torch seat is fixed, a torch is placed on the torch seat, and the torch is fixed and held using a fixing bolt, a press fitting, a nut, etc. attached to the torch seat, and the torch is fixedly held by a vertical member. The torch head was running opposite the fillet cutting position.

The top surface of the base material does not necessarily have a uniform plane, and if welded green lumps etc. are attached to the top surface of the base material,
The torch head slides on the top surface of the welded material and cuts the vertical member, so the drive wheels of the traveling truck run in a state floating above the base material, making it unstable and losing straightness, so the height of the torch head is (position) was adjusted manually each time.

In this case, one person operates several self-propelled gas cutting machines to progress the work, so it is extremely difficult to manually adjust the height of each torch head while visually checking the machines while the machine is running. , work efficiency is extremely poor,
The drawback was that it was not possible to achieve uniform cutting with good quality.

<Problems to be solved by the invention> In order to solve the above-mentioned drawbacks, the torch head, which is fixedly held on the upper surface of the rear part of the traveling trolley at an angle of about 45 degrees, is made to be able to move up and down, and the fusing position is automatically set. This greatly improves work efficiency and enables uniform cutting with good quality.

<Means for solving the problem> In order to achieve the above object, a torch seat is fixed to the rear upper surface of the traveling trolley, and a hinge is formed on the torch seat so as to maintain an inclination angle of approximately 45° when closed. The vertical piece of the torch is fixed by welding, the torch support and the torch are fixed to the inclined piece, and the lower part of the torch support and the rear part of the traveling trolley are pulled via a spring, so that the torch support can be opened and closed up and down to raise and lower the torch head. This is what I did.

<Function> By operating the torch base so that it can be opened and closed up and down via a spring, the torch head can move up and down freely, and if there is a welded mass attached to the top surface of the base material, the torch head automatically adjusts the top surface of the welded mass. The carriage slides to cut the vertical member, and the carriage runs in a stable state, and as soon as it passes over the top surface of the welded meat, it immediately moves to cut along the fillet cutting line.

That is, since the torch head automatically sets the cutting position, there is no need for manual adjustment, which greatly improves work efficiency and allows for high-quality, uniform cutting.

<Embodiment> An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. At the same time, a guide roller mounting frame 1a with front and rear guide rollers 1b and 2b attached is attached to the front and rear guide rollers 1b and 2b (member side), and a torch seat 2 is fixed at a required position on the rear upper surface of the traveling trolley 1. The vertical piece 3a of the hinge 3, which is formed to maintain an inclination angle of approximately 45°, is welded and fixed, and the inclined piece 3
b Fix the torch pedestal 4 having the fixing bolt 7 on the upper edge, place the torch 6 on the torch pedestal 4, and attach the torch 6 to the bolt 7 via the semi-arc-shaped pressing fitting 8.
The torch 6 is held by passing through it, and the thumbscrew 9
Screw onto bolt 7 at .

Next, as shown in FIG. 3, both ends of the spring 5 are attached to the U-shaped locking fitting 1c fixed to the rear part of the traveling truck 1 and the U-shaped locking fitting 4a fixed to the lower part of the torch support 4. It is locked to form a device that allows the torch head to be moved up and down.

Further, as shown in FIGS. 3 and 4, the traveling bogie 1 is equipped with a front wheel 1d and a rear wheel 1e. The front wheel 1d has a smaller diameter than the rear wheel 1e and can be turned. ' (not shown), one of which is used as a driving wheel to move the vehicle in the direction of arrow R.

Traveling trolley 1 equipped with a torch head lifting device
As shown in FIG. 1, a self-propelled gas cutting device (hereinafter referred to as a self-propelled gas cutting device) is installed so that the front and rear guide rollers 1b and 2b rotate in contact with the side edges of the vertical member B, and is placed on the base material A and run.

The self-propelled gas cutting device cuts along the cutting line of the fillet C of the vertical member B while running on the base material A.

In this case, if the welded mass 11 is attached to the base material A as shown in FIG. 3, the torch head 6a
As shown in FIG. 2, since the torch support 4 is released against the tension of the spring 5 in the direction of arrow U,
The torch 6 fixed to the torch support 4 rises, and the torch head 6a cuts the side edge of the vertical member B while automatically adjusting and sliding on the upper surface of the welded mass 11, and when it passes over the upper surface of the welded mass 11, it touches the spring 5. The torch support 4 is pulled and closed in the direction of arrow D while maintaining an inclination angle of approximately 45°, and the torch head 6a descends and cuts along the fillet C cutting line.

The present invention is not limited to this embodiment, and within the scope of the technical concept, a reinforcing roller 10 is attached to the torch support 4 as shown in FIG. It is also possible to prevent the torch head 6a from sliding by preventing it from sliding against the upper surface of A.

<Effects of the invention> In this invention, the torch pedestal to which the torch is fixed maintains an angle of inclination of approximately 45° when closed through a screw, and can be opened and closed up and down, and furthermore, the torch pedestal is always fixed by the tension of the spring. Since it is pulled downward and can run with the torch head facing the fillet cutting line of a vertical member, there is no need to manually adjust the height of the torch head, which significantly improves work efficiency and allows for high-quality, uniform cuts. It has remarkable effects such as being able to.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the state in which a self-propelled gas cutting device equipped with a device for freely raising and lowering the torch head of the present invention is used. FIG. 2 is an explanatory diagram showing the operation of opening and closing the torch support up and down. FIG. 3 is a front view of a trolley equipped with the device for freely raising and lowering the torch head of the present invention. FIG. 4 is a front view showing another embodiment. 1: Traveling trolley, 2: Torch catch, 3: Screw plate, 3
a: Vertical piece, 3b: Inclined piece, 3c: Pin, 4: Torch pedestal, 4a: Locking metal fitting, 5: Spring,
6: Torch, 6a: Torch head, 7: Bolt,
8: Pressing metal fitting, 9: Thumb screw, 10: Auxiliary roller, 11: Welding mass, A: Base material, B: Vertical member,
C: Fillet.

Claims (1)

[Scope of utility model registration request] In a self-propelled gas cutting device, a torch seat is fixed to the rear upper surface of a traveling carriage, and when the torch seat is closed, the welded fillet of the vertical member and base material is opposed to the torch head, and the inclination angle is adjusted. Fixing the vertical piece of the hinge formed to hold the torch, and fixing the torch base on which the torch is placed and fixed on the upper edge of the inclined piece.
A device for freely raising and lowering a torch head, characterized in that a spring is tensilely locked through a locking metal fitting of a torch support and a locking metal fitting of a traveling carriage, and the torch head is raised and lowered by vertically opening and closing the torch support.