JP4022840B2 - Clamping device for rail bond welding - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clamping device capable of holding a rail bond and a heating agent without interfering with traveling of a train when welding a rail bond to a rail-to-rail joint.
[0002]
[Prior art]
In the electric section of the railway business, rails are used as signal lines for carrying signal currents for controlling signal equipment, and rails are used as electric lines for returning train currents for running trains to substations. is doing. For this reason, rail bonds are used to electrically connect the rails to each other. The rail bond is made by twisting an annealed copper wire concentrically in the right-handed direction and attaching terminals to both ends, and welding the terminals on both ends to the rail side portions with welding bonds.
[0003]
As shown in FIG. 7, a conventional rail bond welding operation is performed by using a clamp member 2 that straddles the rail 1 from above and clamps the inner and outer rail side surfaces 1a. The clamp member 2 can be opened and closed with the intermediate point between the two arms 3 a and 3 b as a fulcrum 4, and a compression spring 5 is attached to the rear end side of the fulcrum 4. I try to pinch each other. The welding operation of the rail bond 7 by the clamp member 2 is performed as follows.
[0004]
That is, the rail bond 7 is prepared at the joint between the rails 1 and 1, the heating agent 8 previously welded to the terminals on both ends thereof is pressed against the rail side surface portion 1a, and in this state, the clamp member 2 The heating agent 8 is sandwiched and fixed to the rail side surface 1a. The heating agent 8 is a simple heating furnace for melting the weld bond 8a and facilitating the welding of the rail bond 7. Then, the heating agent 8 is heated from the outside with a burner (not shown) to melt the weld bond 8a, and a new weld bond is added to the recess 8b of the heating agent 8 and stirred to raise the required shape. ing.
[0005]
[Problems to be solved by the invention]
However, in the welding operation using the conventional clamp member 2, the clamp member 2 is disposed from above the rail head portion 1b so as to straddle the rail head portion 1b, and the rail bond portions 7a and 1a are sandwiched between the rail bonds 7. The heating agent 8 is fixed to the rail side surface 1a. For this reason, the train travels and is very dangerous. Further, every time there is a train traffic, it is necessary to remove the clamp member 2 to cancel the set state of the rail bond 7 and the heating agent 8 and to interrupt the welding operation. In addition, since it is necessary to start the welding operation again from the beginning, it is extremely inefficient, and there is also a disadvantage that the welding operation itself cannot be performed when the time interval through which the train passes is short.
[0006]
Further, in the stretch joint 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 clamps the rail. There was a problem that I could not. Furthermore, it is necessary to heat up the heating agent 8 and melt the weld bond 8a while stirring it, but the tip clamping portion 6 of the arm 3a of the clamp member 2 obstructs the stirring work, and the welding work itself. There was also a problem that could not be performed smoothly. In addition, the clamp member 2 has to be released every time the train goes and cannot be left, so there is a drawback that only one welding operation can be performed at a time.
[0007]
[Means for Solving the Problems]
In view of the above-described problems, the present invention is an improvement and removal of the above, and allows the train to pass through while being set on the rail, and for rail bonding welding that enables efficient welding work. It is intended to provide a clamping device.
[0008]
Thus, the means of the present invention adopted by the present invention to solve the above-mentioned problems includes a clamp means for sandwiching the edge portion of the rail bottom portion up and down, a clamp means attached to the clamp means, and a rail side surface portion. It has a pressing means that can move forward and backward, and a rail bond heating agent holding means attached to the tip of the pressing means, and the clamp means abuts against the edge end face when holding the rail bottom to prevent rolling. A rail bond welding is provided, wherein an anti-swaying plate is attached, and a pressure adjusting screw is provided between the pressing means and the heating agent holding means to adjust a force for pressing the heating agent against the side surface of the rail. It is a clamping device for.
Since the clamp device is attached to the bottom of the rail, there is no member that interferes with the train running on the rail head, and the train can run with the clamp device attached. That is, it is possible to perform the rail bond welding work safely and quickly while passing the train.
[0009]
The rail bonding welding clamp according to claim 1, wherein the means of claim 2 adopted by the present invention is provided with a plurality of pressing means having a heating agent holding means attached to the tip thereof in parallel. Device.
For example, it is possible to perform welding work by clamping two rail bonds at the same time, which is extremely efficient.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described below based on the embodiment of the invention shown in the drawings. In addition, the same code | symbol as the conventional case is the same member. 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 device 10, 3 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. FIG. 6 is a side view of the mechanism 14.
[0011]
In the clamping device 10, a vice plier 15 is used as the clamping means 11. The vice pliers 15 are a kind of so-called vise that can be attached and detached with a one-touch type by closing the levers 15a and 15b integrally or by opening only the lever 15a alone. The interval between the upper and lower clamp teeth 16a and 16b provided on the distal end side can be arbitrarily changed by rotating the clamp attachment adjusting screw 15c. The upper clamp teeth 16a are attached with a rocking prevention plate 18 for coming into contact with the edge end surface 17 of the rail bottom 1c to prevent rolling.
[0012]
A height adjusting mechanism 14 composed of two struts 19 a and 19 b is attached to the upper portion of the vice pliers 15. The column 19a has a long hole 20, and a bolt 21 penetrating the long hole 20 is attached to the column 19b. Both of them can adjust the height position of the pressing means 12 by adjusting the screwed state of the bolt 21 and the nut 22. That is, when the bolt 21 is fastened in a state of being locked to the upper end side of the long hole 20 (the state shown in FIG. 4), the pressing means 12 is at the highest position, and the bolt 21 is on the lower end side of the long hole 20. When fastened in a locked state, the pressing means 12 is at the lowest height position. What is necessary is just to determine this height position according to the kind of rail 1 used as object.
[0013]
In this embodiment, a total of two pressing means 12 are provided on both ends of the horizontal frame 23 attached to the upper end of the column 19b of the height adjusting mechanism 14 so as to be T-shaped. (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 in the left direction of the figure by urging the disk 27 fixed to the through shaft 25. A knob 28 is attached to the rear end side of the penetrating shaft 25, and a holding means 13 for the heating agent 8 is attached to the tip end side via a pressure adjusting screw 29. 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 press and urge it. It is made like that. That is, this clamping device 10 corresponds to a case where two rail bonds 7 are installed in parallel.
[0014]
Next, a procedure for welding the two rail bonds 7 and 7 by the clamp device 10 configured as described above will be described. First, as shown in FIG.1 and FIG.2, the clamp apparatus 10 is prepared corresponding to the location which is going to weld the terminal of the rail bond 7 in a rail joint. Then, when the clamp teeth 16a and 16b of the vice pliers 15 as the clamp means 11 are inserted into the rail bottom portion 1c of the corresponding place and the levers 15a and 15b are pushed down integrally, the clamp teeth 16a and 16b push the rail bottom portion 1c from above and below. It is firmly bitten and pinched and fixed to it. After clamping, the safety cap 39 shown in FIG. 1 may be put on the lever portion so that the clamped state is not released unnecessarily. The safety cap 39 includes a cylindrical cap 40 that is externally fitted to the levers 15a and 15b, and a U-shaped retaining ring 41 that is locked to the clamp adjusting screw 15c.
[0015]
Thereafter, the vertical position of the support 19b of the height adjusting mechanism 14 is adjusted to adjust the height position of the holding means 13 and 13 for the heating agent attached to the tip side of the two pressing means 12 and 12. This is because when the rail bonds 7 and 7 are welded, the upper and lower positions of the holding means 13 and 13 for the heating agent are at appropriate height positions according to the type of rail 1 (particularly the size in the height direction). It is for making. That is, the welding height position of the rail bonds 7 and 7 is adjusted according to the type of the rail 1. Further, the engagement portion 30 of the heating agent holding means 13 is rotated to adjust the screwing state of the pressure adjusting screw 29 . This is to ensure that the pressing force to the rail side surface 1a is appropriate when the heating agent 8 is held.
[0016]
After the height adjustment and the pressure adjustment are completed, two rail bonds 7 are prepared by fusing the heating agent 8 integrally with the weld bonds 8a at the ends of both ends. And each rail bond 7 is fixed in the following procedures, and welding work is performed sequentially. That is, by pulling the knob 28 of the pressing means 12, the engaging portion 30 of the heating agent holding means 13 is moved backward from the rail side surface 1 c to form a large space between the rail side surface 1 c 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 unattended. Thereby, the engaging part 30 moves forward with respect to the rail side surface 1c by the biasing force of the spring 26, and presses and biases the heating means 8 against the rail side surface 1c with a desired pressure. That is, the heating means 8 and the rail bond 7 are fixed to the rail side surface 1c.
[0017]
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), the welding bond 8a is melted through the internal furnace material 8c, and newly added to the recess 8b. Stirring while adding the appropriate weld bond 8a, it is raised to the required shape. After the welding bond 8a has been raised, the molten bond 8a is cooled and solidified. Then, by opening only the lever 15a of the vice plier 15 alone, the clamp teeth 16a and 16b can be released from the rail bottom 1c by a one-touch method, and the entire clamp device 10 can be removed. Finally, the outer metal casing 8d and the furnace material 8c of the heating material 8 may be separated from the weld bond 8a. The separation of the two can be easily performed because the materials are different.
[0018]
If it is such a rail bond 7 welding operation, the entire clamping device 10 is located at a position lower than the rail head 1b and does not interfere with train travel. It is possible to carry out the welding operation. For the sake of safety, the welding operation is temporarily stopped while keeping the clamped state for safety, and the welding operation is continued after passing the train. Further, the clamping device 10 clamps the edge portion of the rail bottom 1c from above and below, and it is easy to mount the ballast track or the concrete slab track. Furthermore, it is possible to connect two rail bonds 7 simultaneously in parallel, and the workability is extremely excellent.
[0019]
FIG. 5 is a side view of the mounted state showing the clamp device 31 according to the second embodiment of the present invention. As shown in the figure, this clamping device 31 uses a U-shaped clamp body 32 mounted on the rail bottom 1c as the clamping means 11 and a bolt 33 erected on the body. The pressing means 12 is attached to another position of the clamp body 32 via the height adjusting mechanism 14. At the time of clamping, the fastening operation of the bolt 33 is necessary, and it cannot be performed by a one-touch type as in the first embodiment. Other configurations and operational effects are the same as those of the first embodiment.
[0020]
FIG. 6 is a side view of the mounted state showing the clamping device 34 outside the present invention. The clamp device 34 is effective when a free space is formed below the rail 1 such as a concrete slab. The clamp means 11 of the clamp device 34 is formed by a clamp screw rod 36 having a hook portion 35 formed on the tip side, a clamp main body 37 inserted therethrough, and a nut 38 screwed into the clamp screw rod 36. Yes. The pressing means 12 is attached to the clamp body 37 via the height adjusting mechanism 14. In the clamping operation, the hook portion 35 of the clamp screw rod 36 is locked from the lower side of the rail 1 to, for example, the end surface side of the inner rail bottom portion 1c, and in this state, the nut 38 is tightened to the end surface side of the outer rail bottom portion 1c. The clamp body 37 may be brought into contact and tightened. Other configurations and operational effects are the same as those of the first embodiment.
[0021]
【The invention's effect】
As described above, according to the present invention, the clamping means for clamping the rail bottom, the pressing means attached to the clamping means and capable of moving forward and backward with respect to the rail side surface, and attached to the tip of the pressing means. Since the rail bond welding clamp device is configured with the rail bond heating agent holding means, the clamp device can be fixed to the rail bottom. 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 rail bond welding work safely and quickly while passing the train.
[0022]
In the present invention, since a plurality of heating agent holding means are provided in parallel, for example, it is possible to perform welding work by clamping two rail bonds at the same time, which is extremely efficient. is there.
[Brief description of the drawings]
FIG. 1 is a side view showing a mounting state of a clamp device according to a first embodiment of the present invention.
FIG. 2 is a plan view showing a mounting 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.
FIGS. 4A and 4B show a height adjustment mechanism of the clamp device according to the first embodiment of the present invention, in which FIG. 4A is a rear view, and FIG.
FIG. 5 is a side view showing a mounting state of a clamp device according to a second embodiment of the present invention.
FIG. 6 is a side view showing a mounting state of the clamping device outside the present invention.
FIG. 7 is related to the prior art and is a perspective view showing a mounting state of a clamp member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Rail, 1a ... Rail side surface, 1b ... Rail head, 1c ... Rail side surface, 7 ... Rail bond, 8 ... Heating agent, 8a ... Weld bond, 8b ... Recessed part, 8c ... Furnace material, 8d ... Metal casing, 10 DESCRIPTION OF SYMBOLS ... Clamp apparatus, 11 ... Clamp means, 12 ... Press means, 13 ... Heating material holding means, 14 ... Height adjustment means, 31 ... Clamp apparatus, 34 ... Clamp apparatus

Claims (2)

Clamping means for sandwiching the edge part of the rail bottom up and down, a pressing means attached to the clamping means and capable of moving forward and backward with respect to the side surface of the rail, and holding the rail bond attached to the tip of the pressing means And an anti-swaying plate that abuts against the edge end surface when the rail bottom portion is clamped to prevent rolling, and is attached between the pressing means and the heating agent holding means. A clamp device for rail bond welding, characterized in that a pressure adjusting screw for adjusting a force for pressing the heating agent against the rail side surface is provided . 2. The clamping device for rail bond welding according to claim 1, wherein a plurality of pressing means each having a heating agent holding means attached to the tip are provided in parallel.

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