JPH11176550A - Rail bond welding clamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail bond welding clamp device for enabling the passing. of a train in the condition that a device is set in a rail and for enabling the efficient welding work. SOLUTION: A rail bond welding clamp device 10 is formed of a clamp means 11 for pinching a rail bottom part 1c, a pushing means 12 fitted to the clamp means 11 to be freely moved forward and backward in relation to a rail side surface 1c, and a heating agent holding means 13 of a rail bond 7 fitted to a tip of the pushing means 12. The clamp device 10 can be fixed to the rail bottom part 1c, and a member to be a cause of hindrance of traveling of a train is eliminated from a rail head part 1b so that a train can travel on the rail in the condition that the clamp device 10 is fitted to the rail. Namely, rail bond 7 welding work can be safely and quickly performed while passing the train. Since plural heating agent holding means 13 are provided in parallel with each other, two rail bonds 7, 7, for example, can be simultaneously clamped for welding work, and the welding work can be remarkably efficiently performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device which can hold a rail bond and a heating agent without hindering the running of a train when welding a rail bond to a rail joint. It is.

[0002]

2. Description of the Related Art In the electric sector of the railway business, rails are used as signal lines for passing signal current for controlling signal equipment, and electric power for returning a train current for running a train to a substation. Rails are used as lines. Therefore, rail bonds are used to electrically connect the rails. The rail bond is formed by twisting a soft copper wire concentrically in a right-handed direction and attaching terminals to both ends, and the terminals at both ends are welded to the side surfaces of the rail by welding bonds.

As shown in FIG. 7, a conventional rail bond welding operation has been performed by using a clamp member 2 which straddles a rail 1 from above and clamps inner and outer rail side surfaces 1a. The clamp member 2 includes two arms 3a and 3b
The intermediate point of the rails can be freely opened and closed as a fulcrum 4 and a compression spring 5 is mounted on the rear end side of the fulcrum 4 so that the rail side surface portions 1a are held between the holding portions 6 at the front end. The welding work of the rail bond 7 by the clamp member 2 is performed as follows.

That is, a rail bond 7 is prepared at the joint between the rails 1 and 1, and a heating agent 8 welded in advance to terminals at both ends thereof is pressed against the rail side surface portion 1a. The heating agent 8 is sandwiched and fixed by the member 2 to the rail side surface portion 1a. Heating agent 8
Is a simple heating furnace for melting the welding bond 8a and facilitating the welding of the rail bond 7. Then, the heating agent 8 is externally heated by a burner (not shown) to melt the welding bond 8a, and a new welding bond is added to the concave portion 8b of the heating agent 8 and stirred to build up to a required shape. ing.

[0005]

However, in the welding operation using the conventional clamping member 2, the clamping member 2
Are arranged from above the rail head 1b, and the rail bond 7 and the heating agent 8 are abutted and fixed to the rail side surface 1a by sandwiching the inner and outer rail side surfaces 1a. Therefore, it hinders the running of the train and is very dangerous. Further, every time a train comes and goes, it is necessary to remove the clamp member 2 to release the set state of the rail bond 7 and the heating agent 8, and to interrupt the welding work. Moreover,
The welding work has to be restarted from the beginning, so it is very inefficient and if the time interval between trains is short,
There was also a disadvantage that the welding operation itself could not be performed.

Further, at the joints where the rails 1 are cut obliquely and overlapped, the entire width of the rail head is larger than the width of the normal rail head 1b, and the clamp member 2 Then, there was a problem that it was not possible to clamp. Furthermore, it is necessary to heat the heating agent 8 to raise the weld bond 8a in a molten state while stirring the same, but the tip holding portion 6 of the arm 3a of the clamp member 2 needs to be raised.
However, there is also a problem that the welding operation itself cannot be performed smoothly because it hinders the stirring operation. In addition, the clamp member 2 must be released each time a train arrives and cannot be left, so that there is a disadvantage that only one welding operation can be performed at a time.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been improved and eliminated in view of the above-mentioned problems, and allows a train to pass while being set on a rail, and has an efficient welding method. An object of the present invention is to provide a clamp device for rail bond welding that can be operated.

According to the first aspect of the present invention, there is provided a clamp means for clamping a rail bottom portion, the clamp means being attached to the clamp means, and moving forward and backward with respect to the rail side surface. A clamping device for rail bond welding, comprising a pressing means capable of holding and a heating agent holding means for a rail bond attached to a tip of the pressing means. Since the clamp device is attached to the bottom of the rail, there is no member at the rail head that hinders the running of the train, and the train can run with the clamp device attached. That is, it is possible to perform the welding work of the rail bond safely and quickly while passing the train.

Further, the means of claim 2 adopted by the present invention is as follows.
The clamp device for rail bond welding according to claim 1, wherein a plurality of heating agent holding means are provided in parallel. For example, a welding operation can be performed by clamping two rail bonds at the same time, and it is possible to perform the welding operation extremely efficiently.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the embodiments of the invention shown in the drawings. The same reference numerals as those in the conventional case denote the same members. 1 to 4 show a clamp device 10 according to a first embodiment of the present invention. FIG. 1 is a side view of the clamp device 10 showing a use state, FIG. 2 is a plan view of the clamp device 10, FIG.
Is a side view showing the pressing means 12 and the heating agent holding means 13,
FIG. 4A is a rear view showing the height adjusting mechanism 14 of the pressing means 12, and FIG. 4B is a side view of the height adjusting mechanism 14.

In this clamping device 10, a vice pliers 15 is used as the clamping means 11.
The vice pliers 15 are a type of so-called vise in which the levers 15a and 15b can be integrally closed or the lever 15a alone can be independently opened to detach and attach the clamp in a one-touch manner. The distance between the upper and lower clamp teeth 16a and 16b provided on the distal end side can be arbitrarily changed by rotating the clamp mounting adjusting screw 15c. Also, the upper clamp tooth 16a has
An anti-swing plate 18 is mounted on the rail bottom 1c to abut against the edge end face 17 of the rail to prevent the rail from rolling.

A height adjusting mechanism 14 comprising two columns 19a and 19b is mounted on the upper portion of the vice pliers 15. The support 19a has a long hole 20 and the support 19
A bolt 21 penetrating through the elongated hole 20 is attached to b. Both can adjust the height position of the pressing means 12 by adjusting the screwing state of the bolt 21 and the nut 22. That is, when the bolt 21 is fastened while being locked to the upper end side of the long hole 20 (FIG. 4).
State), the pressing means 12 is at the highest height position, and when the bolt 21 is fastened in a state of being locked to the lower end side of the long hole 20, the pressing means 12 is at the lowest height position. The height position may be determined according to the type of the target rail 1.

In this embodiment, the pressing means 12 are respectively added to both ends of a horizontal frame 23 attached to the upper end of the column 19b of the height adjusting mechanism 14 so as to form a T-shape. Two are provided (see FIG. 2). As shown in FIG. 3, each pressing means 12 has a shaft 25 that penetrates the cylindrical main body 24, and a spring 26 is mounted in the cylindrical main body 24. The spring 26 always urges the through shaft 25 to the left side in the drawing by urging the disk 27 fixed to the through shaft 25. Through shaft 2
A knob 28 is attached to the rear end side of the heating agent 5, and the holding means 13 for the heating agent 8 is connected to the front end side via a pressure adjusting screw 29.
Is attached. The holding means 13 has an engaging portion 30 formed by bending a plate-like material into an L-shape, and the engaging portion 30 engages with the side surface and the lower surface side of the heating agent 8 to urge it. It has been made like that. That is, this clamping device 10
Corresponds to a case where two rail bonds 7 are installed in parallel.

Next, the procedure for welding the two rail bonds 7 by the clamping device 10 having the above-described structure will be described. First, as shown in FIGS. 1 and 2, a clamp device 10 is prepared at a rail joint at a position where an end of a rail bond 7 is to be welded. And
Clamp teeth 16a and 16 of vice pliers 15 as clamp means 11 are provided on the corresponding rail bottom 1c.
b, and the levers 15a and 15b are pressed down together, the clamping teeth 16a and 16b are moved to the rail bottom 1
c is firmly gripped from above and below, and is fixed thereto. After the clamping, the safety cap 39 shown in FIG. 1 may be put on the lever so that the clamped state is not released unnecessarily. The safety cap 39 is a cylindrical cap 40 fitted over the levers 15a and 15b.
And a U-shaped retaining ring 41 locked by the clamp adjusting screw 15c.

After that, the column 19b of the height adjusting mechanism 14
The height position of the heating agent holding means 13 attached to the tip of the two pressing means 12 is adjusted by adjusting the vertical position of the two pressing means 12. This means that when welding the rail bonds 7, the upper and lower positions of the heating agent holding means 13, 13 are
The height of the rail 1 is set to be appropriate according to the type (particularly, the size in the height direction) of the rail 1. That is, the welding height position of the rail bonds 7 is adjusted according to the type of the rail 1. Further, the engaging portion 30 of the heating agent holding means 13 is rotated to adjust the screwing state of the pressure adjusting screw 29, and the gap between the rail side surface 1a and the engaging portion 30 is adjusted. This is to ensure that when the heating agent 8 is held, the pressing force against the rail side surface 1a is appropriate.

After the height adjustment and the pressure adjustment are completed, two rail bonds 7 are prepared by integrally fusing the heating agent 8 to the terminals at both ends by welding bonds 8a. Then, each rail bond 7 is fixed in the following procedure, and welding work is sequentially performed.
That is, the knob 28 of the pressing means 12 is pulled to move the engaging portion 30 of the heating agent holding means 13 backward from the rail side surface 1c, thereby forming a large space between the rail side surface 1c and the engaging portion 30. Next, in this state, the heating agent 8 of the rail bond 7 is placed on the engaging portion 30 and the knob 28 is left.
Thus, the engaging portion 30 moves forward with respect to the rail side surface 1c by the urging force of the spring 26, and presses and urges the heating means 8 against the rail side surface 1c at a desired pressure. That is, the heating means 8 and the rail bond 7 are
It is fixed to the rail side surface 1c.

After the heating agent 8 and the rail bond 7 are fixed in this way, the heating agent 8 is heated from the outside by a burner (not shown), and the welding bond 8a is melted through the internal furnace material 8c to form a recess. Stirring is performed while adding a new welding bond 8a to 8b, so that a desired shape is formed. After the welding bond 8a has been raised, the molten bond 8a is cooled and solidified. The clamp teeth 16a and 16b can be released from the rail bottom 1c in a one-touch manner by opening only the lever 15a of the vice plier 15 alone.
Can be removed entirely. Finally, heating material 8
The outer metal casing 8d and the furnace material 8c
What is necessary is just to separate from a. The two can be easily separated because of their different materials.

In the case of such a welding work of the rail bond 7, the whole of the clamp device 10 is located at a position lower than the rail head 1b and at a position where the running of the train is not hindered. It is possible to perform the welding operation while passing through. When passing through the train, the welding operation is temporarily stopped while keeping the clamped state for safety, and the welding operation is continued after passing through the train.
The clamp device 10 clamps the edge of the rail bottom 1c from above and below, and can be easily attached to a ballast track or a concrete slab track. Furthermore, two rail bonds 7 can be connected in parallel at the same time, which is extremely excellent in workability.

FIG. 5 is a side view of the clamp device 31 according to the second embodiment of the present invention in a mounted state. As shown in FIG.
The reference numeral 1 denotes a U-shaped clamp body 32 attached to the rail bottom 1c and a bolt 33 standing upright. The pressing means 12 is attached to another position of the clamp body 32 via a height adjusting mechanism 14. At the time of clamping, a fastening operation of the bolt 33 is required, and cannot be performed by a one-touch method as in the first embodiment. The other configuration and operation and effect are the same as those of the first embodiment.

FIG. 6 is a side view of a mounted state showing a clamp device 34 according to a third embodiment of the present invention. The clamp device 34 is effective when a free space is formed below the rail 1 like a concrete slab or the like. Clamping means 11 of this clamping device 34
Is formed by a clamp screw bar 36 having a hook portion 35 formed on the distal end side, a clamp body 37 inserted therethrough, and a nut 38 screwed to the clamp screw bar 36.
The pressing means 12 is attached to the clamp body 37 via a height adjusting mechanism 14. In the clamping operation, the hook portion 35 of the clamp screw bar 36 is locked from below the rail 1 to, for example, the end surface side of the inner rail bottom 1c, and in this state, the nut 38 is tightened to move to the end surface side of the outer rail bottom 1c. What is necessary is just to make the clamp main body 37 contact, and to tighten it.
The other configuration and operation and effect are the same as those of the first embodiment.

[0021]

As described above, in the present invention,
A rail bond comprising clamp means for clamping the rail bottom, pressing means attached to the clamp means and capable of moving forward and backward with respect to the rail side surface, and heating agent holding means for the rail bond attached to the tip of the pressing means Since the clamping device for welding is configured, the clamping device can be fixed to the bottom of the rail. Therefore, there is no member in the rail head that interferes with the running of the train, and the running of the train is possible with the clamp device attached.
That is, it is possible to perform the welding work of the rail bond safely and quickly while passing the train.

In the present invention, since a plurality of heating agent holding means are provided in parallel, it is possible to perform a welding operation by simultaneously clamping two rail bonds, for example, and to perform the operation very efficiently. Is possible.

[Brief description of the drawings]

FIG. 1 is a side view showing a mounted state of a clamp device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a mounted state of the clamp device according to the first embodiment of the present invention.

FIG. 3 is a side view showing a pressing unit and a heating agent holding unit of the clamp device according to the first embodiment of the present invention.

FIG. 4 shows a height adjusting mechanism of the clamp device according to the first embodiment of the present invention, in which FIG.
FIG. (B) is a side view.

FIG. 5 is a side view showing a mounted state of a clamp device according to a second embodiment of the present invention.

FIG. 6 is a side view showing a mounted state of a clamp device according to a third embodiment of the present invention.

FIG. 7 relates to the prior art, and is a perspective view showing a mounted state of a clamp member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rail, 1a ... Rail side surface, 1b ... Rail head, 1
c: rail side surface, 7: rail bond, 8: heating agent, 8a
... welding bond, 8b ... recess, 8c ... furnace material, 8d ... metal casing, 10 ... clamping device, 11 ... clamping means,
12: pressing means, 13: heating material holding means, 14: height adjusting means, 31: clamping device, 34: clamping device

Claims (2)

[Claims] 1. Clamping means for clamping a rail bottom, pressing means attached to the clamping means and capable of moving forward and backward with respect to a rail side face, and holding a heating agent on a rail bond attached to the tip of the pressing means. Means for rail bond welding. 2. The clamp apparatus for rail bond welding according to claim 1, wherein a plurality of heating agent holding means are provided in parallel.