JPS623332Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a truck for gas welding cylinders.

Conventionally, in gas welding work, cylinders of oxygen and acetylene gas were mounted on carts and moved, but the working environment for this welding work was not necessarily safe. For example, if the place where gas welding is performed is adjacent to a spot welding machine in a factory, spatter from spot welding will fly into the upper valve part of the acetylene gas cylinder or pipe connection part, and if there is a gas leak in this part, it can catch fire. There is a risk of explosion. Similar dangers exist near grinder workplaces.

This invention aims to provide a gas welding cylinder truck that eliminates the above-mentioned risks and improves safety.

An embodiment of this invention will be described below with reference to the drawings.

Running wheels 2, 2 are attached to the front part of the bogie frame 1, and caster type running wheels 3, 3 are attached to the rear part. The cylinder support frame 4 that supports the gas cylinder is made up of a lower flat plate part 4a and a pipe member 4b welded to the lower flat plate part 4a.
It is pivotally connected to the truck frame 1 so as to be swingable in the front and rear directions so as to coincide with the center P ₁ of the truck frame 1 . 4d is a cylinder holding member fixed to the cylinder support frame 4; 5 is a cylinder holding member fixed to the cylinder support frame 4;
One end 5a that holds the cylinder from the front side is rotatably supported by the cylinder support frame 4, and the other end 5b is a cylinder holder that is locked to the cylinder support frame 4. A curtain support member 6 is pivotally attached to the upper part of the cylinder support frame 4 so as to be able to swing back and forth around a support shaft P2 attached to the cylinder support frame ₄ . The curtain support member 6 is made up of a rod 6a and an upper umbrella portion 6b. The upper part of the ignition prevention curtain 7 surrounding the upper part of the cylinder is held on the outer periphery of the umbrella part 6b of the curtain support member 6. The curtain support member 6 is supported by a parallel link mechanism so as to maintain a constant angular position with respect to the truck frame 1 regardless of whether the cylinder support frame 4 is in an upright or inclined position. That is, this parallel link mechanism includes a connection link 8 whose upper and lower ends are pivotally connected to the curtain support member 6 and the trolley frame 1 with pins P ₃ and P ₄ so as to be swingable in the front-rear direction;
A fixed link portion 1a consisting of a portion of the truck frame 1 between a pivot point _P4 between the connecting link 8 and the truck frame 1 and a pivot point _P1 between the truck frame 1 and the cylinder support frame 4; The support part (i.e., _the bracket _4c
and the pipe member 4b), and the pivot joint between the cylinder support frame 4 and the curtain support member 6.
Curtain link section 6 consisting of P ₂ and pivot point P ₃ between curtain support member 6 and connection link 8
It is composed of c. The length between the pins P ₃ and P ₄ of the connection link 8 is the same as the length between the wheel center axis P ₁ and the support axis.
The length of P ₂ is the same, and the wheel center axis P ₁ and pin P ₄
The length up to the curtain link portion 6c of the curtain support member 6 is made equal to the length between the support shaft _P2 and the pin _P3 . Both ends of the angular position holding device 9 of the cylinder support frame 4, which has a pipe 9a fitted with a small-diameter rod 9b, are connected to the rear end of the truck frame 1 and the cylinder support frame 4, and a fastener screwed onto the pipe 9a is connected to the rear end of the truck frame 1 and the cylinder support frame 4. The tilt adjustment position is held by a screw 9c.

To explain the use of the gas welding cylinder truck of this invention constructed as described above, first, as shown in FIG.
With gas cylinders a and b in contact with the floor (the cylinder support frame 4 is upright), place the welding gas cylinders a and b on the flat plate part 4a, and rotate the cylinder holder 5 to lock the locking part 5b. and hold cylinders a and b. Next, the cylinder support frame 4 is tilted as shown in FIG. 3, and the tightening screw 9c is tightened to maintain the tilted position. In this state, the truck can travel, and is moved to a welding workshop where gas welding is performed. In addition, regardless of whether the cylinder support frame 4 is upright or tilted, the curtain 7 attached to the curtain support member 6 by a parallel link mechanism reliably surrounds the tops of the cylinders a and b, and Even if there are welding spatters or the like, they are blocked by the curtain 7 and ignition and explosion are prevented.

As described above, this invention uses a parallel link mechanism to ensure that the curtain surrounds the upper circumference of the gas cylinder regardless of whether the cylinder support frame is in an upright or inclined position in a gas welding cylinder trolley, which creates a poor gas welding environment. Even if spatter or the like comes flying during spot welding, the curtain can reliably block it, preventing ignition and explosion, and allowing safe work.

[Brief explanation of the drawing]

The drawings show an embodiment of the gas welding cylinder trolley of this invention; Fig. 1 is a side view of the cart, Fig. 2 is a plan view of the same, and Fig. 3 is a side view of the cart when the cylinder support frame is tilted. It is a diagram. 1: Truck frame, 1a: Fixed link part, 2:
Running wheel, 3: Running wheel, 4: Cylinder support frame,
6: curtain support member, 6c: curtain link section, 7: curtain, 8: connection link.

Claims (1)

[Scope of utility model registration request] A dolly frame with running wheels attached, a gas welding cylinder support frame that is pivoted to the dolly frame so that it can swing back and forth, a flammability prevention curtain that surrounds the top of the cylinder, and a gas welding cylinder support frame that is attached to the top of the cylinder support frame in the front and back direction. A curtain support member pivotally connected to be swingable, and a connecting link whose lower end is pivotally connected to the trolley frame and the upper end to the curtain support member so as to be swingable in the front and rear directions, and the curtain support member is supported by a cylinder. The connecting link and the pivot point between the connecting link and the truck frame to the pivot point between the truck frame and the cylinder support frame so as to maintain the frame at a constant angle with respect to the truck frame regardless of the upright or inclined position of the frame. a fixed link part formed by a portion of the trolley frame between; a support part formed from a pivot joint between the trolley frame and the cylinder support frame to a pivot joint between the cylinder support frame and the curtain support member; A curtain link section formed between a pivot point between the cylinder support frame and the curtain support member and a pivot point between the curtain support member and the connection link constitutes a parallel link mechanism. Cart for gas welding cylinders.