Rail clip removal device

Abstract

To provide a rail clip attaching / detaching device allowing easy attaching / detaching of the rail clip on both sides of a rail.SOLUTION: A rail clip attaching / detaching device 100 allows fastening of a rail R to a sleeper M by fitting rail clips C arranged on both sides of the rail R to the rail R, by a pair of claw parts 40 provided at lower ends of a pair of arms 21, by oscillating the arms 21. The rail clip attaching / detaching device 100 allows loosening of the rail R from the sleeper M by separating the rail clips C arranged on both sides of the rail R from the rail R, by the pair of claw parts 40 provided at the lower ends of the pair of arms 21, by oscillating the arms 21. Thus, the rail clip attaching / detaching device 100 allows easy attaching / detaching of the rail clips C on both sides of the rail R.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a rail clip attaching / detaching device used for attaching and detaching a rail clip for fastening a rail to a sleeper. [Background technology]

[0002] Recently, rails are fastened to sleepers using rail clips attached to the sleepers. A specific tool is required to attach and detach the rail clips. For example, a rail clip removal device is known that makes it possible to hook the claw of a clip hooking part that is journalled at the lower end of an operating rod onto the rail clip and then use the "leverage principle" to pull the operating rod up to remove the rail clip from the rail (see, for example, Patent Document 1 and Non-Patent Document 1). Furthermore, the rail clip can be attached to the rail by hooking the rail clip remover onto the rail clip and operating it in the opposite direction to removing the rail clip. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-229844 A [Non-patent literature]

[0004] [Non-Patent Document 1] Tetsutomo Kogyo Co., Ltd. website, [Searched on April 19, 2021], Internet<URL:http: / / www.tetsuyu.co.jp / seihin / kata / kata-sagyou / kata-panpu-ra.pdf> , Pampura Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the case of the rail clip attachment / detachment devices described in Patent Document 1 and Non-Patent Document 1, even though they use the principle of leverage, the worker must exert a great deal of strength to attach and detach the rail clip, making the attachment and detachment work hard work. In particular, the rail clips on both sides of the rail must be attached and detached individually, making the attachment and detachment work complicated. Therefore, the inventors conducted extensive research and developed a technique for easily attaching and detaching the rail clips on both sides of the rail.

[0006] An object of the present invention is to provide a rail clip attachment / detachment device that can easily attach and detach rail clips on both sides of a rail. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides: A rail clip attachment / detachment device used to attach and detach rail clips, which are arranged on a sleeper in a pair so as to sandwich a rail, to and from the rail, A device body having wheels for moving the rail clip attaching / detaching device along the rail; a pair of arms attached to a removable unit connected to the device body so as to be able to swing about and disposed at positions sandwiching the rail; a drive unit that swings the lower ends of the pair of arms toward or away from each other; a claw portion provided at a lower end of the pair of arms and abutting against a part of the rail clip; Equipped with The claw portion is A first claw member that abuts against an outer end side of the rail clip opposite to the rail; A second claw member that abuts against an inner end side of the rail clip closer to the rail; A switching member that switches the first claw member and the second claw member to a position where either one of the first claw member and the second claw member can abut against the rail clip; Equipped with The pair of rail clips are provided on the outer end side of the pair of front Note With the claws in place, the lower ends of the pair of arms are swung closer to each other, The claw portion The first claw portion Material The rail clip is pressed against the rail side by a force of the force of the force of the force of the rail clip. Note With the claws in place, the lower ends of the pair of arms are swung apart, The claw portion The second claw portion Material and an operation of pulling the rail clip away from the rail side and removing the rail clip by the pulling action.

[0008] A rail clip removal device of this configuration positions the claw portions at the lower ends of a pair of arms on the outer ends of the pair of rail clips, and by swinging the lower ends of the pair of arms closer together, the rail clip is pressed against the rail by the pair of claw portions, and the rail clip can be fitted onto the rail. In addition, this rail clip removal device positions the claw portions provided at the lower ends of a pair of arms on the inner end side of the pair of rail clips, and by swinging the lower ends of the pair of arms apart, the rail clip can be pulled away from the rail side by the pair of claw portions, thereby removing the rail clip from the rail. In other words, by swinging the pair of arms, the pair of claw portions at the lower ends of the arms can engage the rail clips arranged on both sides of the rail with the rail to fasten the rail to the sleepers, or pull the rail clips arranged on both sides of the rail away from the rail to release the rail from the sleepers. In this way, the rail clip attachment / detachment device makes it possible to easily attach and detach the rail clips on both sides of the rail.

[0010] The mode of using the first claw member for fastening the rail clip and the mode of using the second claw member for loosening the rail clip can be switched by a switching member in the claw section, so that this rail clip removal and attachment device can effectively perform both the fastening operation of fitting the rail clip to the rail and the loosening operation of removing the rail clip from the rail.

[0011] Also preferably, A positioning member that comes into contact with a part of the rail clip is provided to position the detachment unit at a position that enables the rail clip to be attached and detached by the claw portion.

[0012] The positioning member can be brought into contact with, for example, the front side of the rail clip to align the detachment unit with respect to the rail clip, and then the rail clip detachment device can be operated at the aligned point to easily perform the tightening operation to fit the rail clip onto the rail, or the loosening operation to remove the rail clip from the rail.

[0013] Also preferably, The detachable unit is connected to the device body via a damper so as to be movable up and down.

[0014] Because the detachment unit is connected to the device main body via a damper so that it can move up and down, the position of the claw portion relative to the rail clip can be fine-tuned, so that the claw portion can be appropriately abutted against the rail clip to conveniently attach and detach the rail clip.

[0015] Also preferably, A stopper member is provided which is disposed farther from the rail than the claw portion and is disposed near the claw portion and the upper surface of the sleeper.

[0016] The stopper member is disposed so as to sandwich the rail clip between the claw portion and the stopper member. This stopper member is a member that prevents the rail clip, which is removed by being pulled away from the rail by the claw portions provided at the lower ends of a pair of arms that are swung by the operation of the drive unit, from being thrown away to a position away from the rail by the force of the removal. In other words, if the rail clip is removed by the claw portion in the direction away from the rail and is thrown outward due to the force of the removal, the thrown rail clip will hit the stopper member and the rail clip will become stuck between the claw portion and the stopper member. With a rail clip removal device equipped with such a stopper member, the rail clip will not stray too far from the rail when removed from the rail, allowing for quick progress to the next task (such as fastening the rail clip to the rail or replacing an old rail clip with a new one).

[0017] Also preferably, The rails are arranged in pairs and are substantially parallel to each other. The device is connected to the device body via a connecting frame, the device body being movable along one of the pair of rails, and is provided with a mobility auxiliary body having wheels for moving along the other rail.

[0018] The device main body, which can move along one of a pair of rails, is connected to the mobile auxiliary body, which can move along the other rail, via a connecting frame, so that the rail clip attachment / detachment device can be stably run along the rails. Effect of the Invention

[0019] According to the present invention, the rail clips on both sides of the rail can be easily attached and detached. [Brief description of the drawings]

[0020] [Figure 1] A front view showing the rail clip attachment / detachment device of this embodiment, showing the state in which the claw portion is switched to the position for fastening the rail clip. [Diagram 2] A front view showing the rail clip installation / removal device of this embodiment, showing the state in which the claw portion is switched to the position for loosening and releasing the rail clip. [Diagram 3] 1 is a top view showing the rail clip attachment / detachment device of this embodiment. FIG. [Figure 4] 1 is a side view showing the rail clip attachment / detachment device of this embodiment. [Diagram 5] 1A is an enlarged view of a main part of a detachment unit of a rail clip attachment / detachment device, showing a state before the rail clip is fastened (a) and a state after the rail clip has been fastened (b). [Figure 6] 1A is an enlarged view of a main part of a detachment unit of a rail clip detachment device, showing a state before the rail clip is loosened (a) and a state after the rail clip has been loosened (b). [Figure 7] 13 is a front view showing a modified example of the rail clip attaching / detaching device. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, the embodiment of the rail clip attaching / detaching device according to the present invention will be described in detail with reference to the drawings. However, the embodiment described below has various technically preferable limitations for implementing the present invention, but the scope of the present invention is not limited to the following embodiment and illustrated examples.

[0022] The rail clip attachment / detachment device 100 of this embodiment is a device used to attach and detach rail clips C, which are arranged on a sleeper M in a pair so as to sandwich the rail R, to and from the rail R. Railway rails R are installed in pairs and approximately parallel to each other, and a rail clip C is provided for each rail R. Each rail clip C is provided with its tip facing the rail R.

[0023] The rail clip detachment device 100 of this embodiment, as shown in Figures 1 to 4 and 5 to 6, comprises an apparatus main body 10 equipped with wheels W for moving the rail clip detachment device 100 along the rail R, a pair of arms 21 attached so as to be freely swingable to a detachment unit section 20 connected to the apparatus main body 10 and positioned to sandwich the rail R, a drive section 30 for swinging the lower ends of the pair of arms 21 so as to move them closer to or apart from each other, a claw section 40 provided at the lower ends of the pair of arms 21 and abutting against a part of the rail clip C, and a movement support body 50 connected to the apparatus main body 10 via a connecting frame 51.

[0024] In addition, a movement auxiliary body 50 that moves along the other rail R is connected to the device main body 10 that is movable along one rail R of the pair of rails R, R. The movement auxiliary body 50 is provided with wheels W for moving along the other rail R.

[0025] The device main body 10 includes a carriage 11 having two wheels W arranged side by side in the front and rear, a hydraulic pressure generating device 12 installed on the carriage 11, a control box 13, and the like. The rail clip attaching / detaching device 100 includes a cart 11 having two wheels W and a mobility auxiliary body 50 having one wheel W, and travels on a rail R on three wheels. The hydraulic pressure generating device 12 is a so-called hydraulic pump, and is provided to operate a drive unit 30, which is a hydraulic cylinder described below. Here, an electric hydraulic pump is used. The control box 13 is provided with a switch (not shown) for switching the hydraulic pressure generating device 12 on and off. The device body 10 is also provided with an operating lever 14 for operating a drive unit 30, which is a hydraulic cylinder described below.

[0026] The attachment / detachment unit 20 is a working part of the device 100 that fits the rail clip C onto the rail R and detaches the rail clip C from the rail R using claw portions 40 provided at the lower ends of a pair of swingable arms 21. The detachable unit 20 is connected to the front end side of the device main body 10 (cart 11) via a damper 60 so as to be movable up and down. A guide 61 for stabilizing the up and down movement of the detachable unit 20 by the damper 60 is provided on the device main body 10 (cart 11).

[0027] In addition, a handle 62 is provided at the upper end of the damper 60 and the guide 61 for an operator to grasp in order to raise and lower the detachment unit 20 or to move the rail clip detachment device 100 along the rail R. A hand brake (not shown) for stopping the rail clip attaching / detaching device 100 on the rail R is provided on the handle 62. In addition, when the hand brake (not shown) is gripped, the brake is released, allowing the rail clip detachment device 100 to be moved, and when the hand brake (not shown) is released, the brake is applied, allowing the rail clip detachment device 100 to be stopped.

[0028] The pair of left and right arms 21 are connected by a link portion 22 and a drive portion 30 . Specifically, the link portion 22 includes an intermediate link 22a, a left link 22b connected to the left side of the intermediate link 22a, and a right link 22c connected to the right side of the intermediate link 22a. A pair of left and right arms 21 are connected to the intermediate link 22a, and a claw portion 40 is connected to an end of the left link 22b and an end of the right link 22c, respectively.

[0029] In addition, at least one of the pair of left and right arms 21 is provided with a positioning member 70 that comes into contact with a part of the rail clip C in order to align the detachable unit part 20 to a position that enables the rail clip C to be attached and detached by the claw part 40. In this embodiment, a positioning member 70 is provided at the lower end of the left arm 21, and the positioning member 70 is provided so as to protrude downward from the lower end of the arm 21.

[0030] The driving unit 30 is disposed on the upper end side of the pair of arms 21 . The drive unit 30 is, for example, a hydraulic cylinder, and by extending and contracting the cylinder, the pair of arms 21 are swung. Note that hydraulic pressure for operating the hydraulic cylinder is supplied from the hydraulic pressure generating device 12. Specifically, by contracting the cylinder, the arms 21 are swung so that the upper ends of the pair of arms 21 are brought closer to each other and the lower ends are moved apart. Furthermore, by extending the cylinder, the arms 21 are swung so that the upper ends of the pair of arms 21 are separated from each other and the lower ends are brought closer to each other.

[0031] Further, a cover 23 is provided on the detachable unit 20 so as to cover the drive section 30 (see FIGS. 1 to 4). By covering the drive unit 30 with this cover 23, clothing and the like are prevented from being caught in the operating drive unit 30 (hydraulic cylinder). In addition, a slit-shaped opening 23s (see FIG. 3) is provided on the upper surface of the cover 23, and the movement of the drive unit 30 (hydraulic cylinder) or the pair of arms 21 can be visually confirmed through this opening 23s. This makes it possible to confirm whether the lower ends of the pair of arms 21 are closed or opened as specified, eliminating the need for an operator to check the movement by, for example, looking under the device 100.

[0032] As shown in Figures 5 (Figure 1) and 6 (Figure 2), the claw portion 40 includes a first claw member 41 that abuts against the outer end side (rear end side) of the rail clip C opposite the rail R, a second claw member 42 that abuts against the inner end side (tip side) of the rail clip C closer to the rail R, and a switching member 43 that switches the position so that either the first claw member 41 or the second claw member 42 can abut against the rail clip C. A switching member 43 of this claw portion 40 is rotatably arranged at the lower end of the arm 21, and the switching member 43 that has been rotated to change its orientation is connected to the end of the left link 22b and the end of the right link 22c using switching pins 44, respectively, so that the claw portion 40 whose orientation has been changed is fixed to the lower end of the arm 21.

[0033] Specifically, the central side of the switching member 43 is rotatably supported on a switching shaft 45 at the lower end of the arm 21, and a first claw member 41 and a second claw member 42 are fixed to one end of the switching member 43. Moreover, the switching member 43 is provided at one end with a first switching hole 43a, and at the other end with a second switching hole 43b. The orientation of this switching member 43 is switched by rotation, and the first switching hole 43a or the second switching hole 43b of the switching member 43 and the switching pin 44 are used to connect the claw portion 40 whose orientation has been switched to the link portion 22, thereby fixing the claw portion 40 to the lower end of the arm 21.

[0034] Then, with the switching pin 44 removed, the switching member 43 is rotated around the switching shaft 45 so that one end of the switching member 43 is positioned outside the pair of arms 21, and as shown in Figure 5 (Figure 6), the first switching hole 43a of the switching member 43 is connected to the connecting holes at the ends of the left link 22b and the right link 22c, and the switching pin 44 is inserted therein, thereby connecting the claw portion 40 to the link portion 22 and fixing the claw portion 40 to the lower end of the arm 21. As shown in Figures 1 and 5, the state in which the claw portion 40 is arranged on the outside of the pair of arms 21 and the first claw member 41 is arranged facing downward is the state in which the rail clip removal device 100 is switched to perform the task of fastening the rail clip C to the rail R.

[0035] In addition, with the switching pin 44 removed, the switching member 43 is rotated around the switching shaft 45, and one end of the switching member 43 is positioned inside the pair of arms 21. As shown in Figure 6 (Figure 5), the second switching hole 43b of the switching member 43 is connected to the connecting holes at the ends of the left link 22b and the right link 22c, and the switching pin 44 is inserted therein, thereby connecting the claw portion 40 to the link portion 22 and fixing the claw portion 40 to the lower end of the arm 21. As shown in Figures 2 and 6, the state in which the claw portion 40 is arranged on the inside of the pair of arms 21 and the second claw member 42 is arranged facing downward is the state in which the rail clip removal device 100 is switched to perform the operation of loosening the rail clip C from the rail R.

[0036] In addition, the switching pin 44 and the switching shaft 45 can be said to be a part of the switching member 43. The switching pin 44 and the switching shaft 45 cooperate with each other to switch the arrangement of the claw portion 40 (the first claw member 41 and the second claw member 42).

[0037] Next, the operation of the pair of arms 21 and the claws 40 of the rail clip attaching / detaching device 100 of this embodiment will be described.

[0038] When using the rail clip attachment / detachment device 100 to fasten the rail clip C to the rail R, the orientation of the claw portion 40 is switched so that the claw portion 40 is positioned on the outside of the pair of arms 21 and the first claw member 41 faces downward, as shown in Figure 5. Then, by operating the drive unit 30 (hydraulic cylinder) from a contracted state shown in Figure 5(a) to an extended state shown in Figure 5(b), the lower ends of the paired arms 21 are swung closer to each other, bringing the left and right claw portions 40 closer to each other, and the first claw member 41 presses the rail clip C against the rail R and fits it in place.

[0039] In addition, when using the rail clip removal device 100 to release the rail clip C from the rail R, the orientation of the claw portion 40 is switched so that the claw portion 40 is positioned inside the pair of arms 21 and the second claw member 42 faces downward, as shown in Figure 6. Then, by operating the drive unit 30 (hydraulic cylinder) from an extended state shown in Figure 6(a) to a contracted state shown in Figure 6(b), the lower ends of the paired arms 21 are swung apart, separating the left and right claw portions 40, and the second claw member 42 pulls the rail clip C away from the rail R and removes it.

[0040] Next, the operation of the rail clip attaching / detaching device 100 of this embodiment will be described.

[0041] First, as shown in Figs. 1 to 4, the rail clip attaching / detaching device 100 is installed so as to be movable on a pair of rails R. Here, the device main body 10 is placed on one rail R, and the rail clip detachment device 100 is installed on the rail R in such an orientation that the movement auxiliary body 50 is placed on the other rail R. Then, depending on whether the operation is to fasten the rail clip C to the rail R or to loosen the rail clip C from the rail R, the orientation of the claw portion 40 is switched as described above. The claw portion 40 of the rail clip attaching / detaching device 100 shown in FIG. 1 is switched to an arrangement for fastening the rail clip C, with the first claw member 41 facing downward. The claw portion 40 of the rail clip attaching / detaching device 100 shown in FIG. 2 is switched to a position for loosening the rail clip C, with the second claw member 42 facing downward.

[0042] [Rail clip fastening work] When fitting the rail clip C to the rail R and fastening the rail R to the sleeper M, the worker grasps the handle 62 and moves the rail clip attaching / detaching device 100 in a pushing manner to the left in FIG. At that time, the worker moves the detachable unit 20 up and down to adjust the distance between the claw portion 40 and the rail clip C. In this embodiment, the positioning member 70 provided at the lower end of the left arm 21 is brought into contact with the front side of the rail clip C, so that the detachment unit 20 is aligned with the rail clip C, and the rail clip detachment device 100 is stopped at the aligned position.

[0043] Then, with the first claw member 41 of the pair of claw portions 40 positioned on the outer end side of the pair of rail clips C as shown in Figure 1, the worker operates the operating lever 14 to actuate the drive unit 30 (hydraulic cylinder) from a contracted state to an extended state, and swings the pair of arms 21 to bring the left and right claw portions 40 closer together, so that the first claw member 41 presses the rail clip C against the rail R side and fits it in place (see Figure 5). After fastening the rail clip C to the rail R in this manner, the worker operates the operating lever 14 to return the drive unit 30 (hydraulic cylinder) to the contracted state and pushes the rail clip removal device 100 toward the next sleeper M. At this time, the worker lifts up the detachment unit 20 to a certain extent so that the claw portion 40 does not get caught on the fastened rail clip C, and moves the rail clip detachment device 100. This operation is repeated for each sleeper M to complete the fastening work of the rail clip C on one side of the rail R.

[0044] After completing the fastening work of the rail clip C on one side of the rail R, the device main body 10 is placed on the other rail R so as to change the direction of travel of the rail clip attachment / detachment device 100, and the rail clip attachment / detachment device 100 is reinstalled on the rail R in an orientation in which the mobile auxiliary body 50 is placed on one of the rails R, and the above operation is repeated for each sleeper M to perform the fastening work of the rail clip C on the other side of the rail R. In this manner, the rail clip C can be fastened and fitted to both rails R.

[0045] [Rail clip loosening work] When removing the rail clip C from the rail R and releasing the rail R from the sleeper M, the worker grasps the handle 62 and moves the rail clip removal device 100 by pushing it to the left in FIG. At that time, the worker moves the detachable unit 20 up and down to adjust the distance between the claw portion 40 and the rail clip C. In this embodiment, the positioning member 70 provided at the lower end of the left arm 21 is brought into contact with the front side of the rail clip C, so that the detachment unit 20 is aligned with the rail clip C, and the rail clip detachment device 100 is stopped at the aligned position.

[0046] Then, with the second claw member 42 of the pair of claw portions 40 positioned on the inner end side of the pair of rail clips C as shown in Figure 2, the worker operates the operating lever 14 to actuate the drive unit 30 (hydraulic cylinder) from an extended state to a contracted state, swinging the pair of arms 21 to separate the left and right claw portions 40, causing the second claw member 42 to pull the rail clip C away from the rail R side and remove it (see Figure 6). After thus releasing the rail clip C from the rail R, the worker operates the operating lever 14 to return the drive unit 30 (hydraulic cylinder) to the extended state, and pushes the rail clip removal device 100 toward the next sleeper M. At this time, the worker lifts up the installation / removal unit 20 to a certain extent so that the claw portion 40 is not caught on the released rail clip C, and moves the rail clip installation / removal device 100. This operation is repeated for each sleeper M to loosen the rail clip C on one side of the rail R.

[0047] After completing the loosening and releasing work of the rail clip C on one side of the rail R, the device main body 10 is placed on the other rail R so as to change the direction of travel of the rail clip detachment device 100, and the rail clip detachment device 100 is reinstalled on the rail R in an orientation in which the mobile auxiliary body 50 is placed on one of the rails R. The above operation is repeated for each sleeper M to perform the loosening and releasing work of the rail clip C on the other side of the rail R. In this manner, the rail clips C can be loosened and removed from both rails R.

[0048] As described above, the rail clip removal device 100 of this embodiment can suitably perform a fastening operation in which, with a pair of claw portions 40 (first claw members 41) arranged on the outer ends of the rail clips C that are arranged in pairs on both sides of the rail R, the lower ends of the pair of arms 21 are swung closer to each other to press the rail clips C against the rail R side with the claw portions 40 (first claw members 41) and fit them in place, and a loosening operation in which, with a pair of claw portions 40 (second claw members 42) arranged on the inner ends of the rail clips C that are arranged in pairs on both sides of the rail R, the lower ends of the pair of arms 21 are swung apart to pull the rail clips C away from the rail R side with the claw portions 40 (second claw members 42) to remove them.

[0049] In particular, the mode of using the first claw member 41 for fastening the rail clip and the mode of using the second claw member 42 for loosening the rail clip can be easily switched by a switching operation of rotating the switching member 43 of the claw portion 40 by approximately 180 degrees, so that this rail clip removal and attachment device 100 can suitably perform both the fastening operation of fitting the rail clip C to the rail R and the loosening operation of removing the rail clip C from the rail R.

[0050] In addition, the positioning member 70 provided at the lower end of the arm 21 can be brought into contact with the front side of the rail clip C to align the detachment unit 20 with respect to the rail clip C, and the rail clip detachment device 100 can be operated at the aligned position to easily perform the fastening operation of fitting the rail clip C to the rail R and the loosening operation of removing the rail clip C from the rail R.

[0051] In addition, since the detachment unit 20 is connected to the front end side of the device main body 10 (cart 11) via a damper 60 so that it can move up and down, the position of the claw portion 40 (first claw member 41, second claw member 42) relative to the rail clip C can be fine-tuned, and the claw portion 40 (first claw member 41, second claw member 42) can be appropriately abutted against the rail clip C to suitably attach and detach the rail clip C.

[0052] In addition, since the device main body 10, which is movable along one of the pair of rails R, is connected to the movement auxiliary body 50, which is movable along the other rail R, the rail clip attachment / detachment device 100 can be made to run stably along the rail R.

[0053] In this manner, the rail clip attaching / detaching device 100 of the present embodiment can easily attach and detach the rail clips C on both sides of the rail R.

[0054] The present invention is not limited to the above-described embodiment. For example, as shown in FIG. 7, a stopper member 80 may be provided that is disposed farther away from the rail R than the claw portion 40 and that is disposed near the claw portion 40 and the upper surface of the sleeper M. The stopper member 80 is disposed so as to sandwich the rail clip C between the claw portion 40 and itself. The stopper members 80 are disposed at both ends of the intermediate link 22 a of the link portion 22 . The intermediate link 22a here is longer than the intermediate link 22a in FIG. 5 or FIG. 6, and both ends thereof extend while bending downward.

[0055] The stopper member 80 is a member that prevents the rail clip C, which is removed by being pulled away from the rail R by the second claw member 42 provided at the lower end of the pair of arms 21 that are swung by the operation of the drive unit 30, from being thrown away to a position away from the rail R by the force of the removal. In other words, if the rail clip C is removed by the second claw member 42 in the direction away from the rail R and is thrown outward due to the force of the removal, the thrown rail clip C will hit the stopper member 80, causing the rail clip C to stop between the claw portion 40 (second claw member 42) and the stopper member 80.

[0056] With a rail clip removal device 100 equipped with such a stopper member 80, the rail clip C removed from the rail R will not move too far away from the rail R, so that the next task (for example, fastening the rail clip C to the rail R, or replacing the old rail clip C with a new one) can be quickly moved on to.

[0057] Moreover, even with this rail clip attaching / detaching device 100, the rail clips C on both sides of the rail R can be easily attached and detached.

[0058] The application of the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0059] 10. Device body 11 Trolley 12 Hydraulic pressure generator 13 Control Box 14 Operating lever 20 Detachable unit 21 Arm 22 Link section 22a Intermediate link 22b Left Link 22c Right Link 23 Cover 23s aperture 30 Drive unit 40 Claw part 41 First claw member 42 Second claw member 43 Switching member 43a First switch hole 43b Second switch hole 44 Switch pin 45 Switching Axis 50 Mobility Aids 51 Connecting Frame 60 Damper 61 Guide 62 Handle 70 Positioning member 80 Stopper member 100 Rail clip removal device W wheels C-Rail Clip R rail M Sleeper

Claims

1. A rail clip attachment / detachment device used to attach and detach rail clips, which are arranged on a sleeper in a pair so as to sandwich a rail, to and from the rail, A device body having wheels for moving the rail clip attaching / detaching device along the rail; a pair of arms attached to a removable unit connected to the device body so as to be able to swing about and disposed at positions sandwiching the rail; a drive unit that swings the lower ends of the pair of arms so as to move them closer to each other and away from each other; a claw portion provided at a lower end of the pair of arms and abutting against a part of the rail clip; Equipped with The claw portion is A first claw member that abuts against an outer end side of the rail clip opposite to the rail; A second claw member that abuts against an inner end side of the rail clip that is closer to the rail; a switching member that switches the first claw member and the second claw member to a position where either one of the first claw member and the second claw member can abut against the rail clip; Equipped with This rail clip removal device is configured to enable the following operations: with the pair of claw portions positioned on the outer ends of the rail clips, the lower ends of the pair of arms are pivoted close to each other, and the first claw member of the claw portions presses the rail clip against the rail side to fit it in; and with the pair of claw portions positioned on the inner ends of the rail clips, the lower ends of the pair of arms are pivoted apart, and the second claw member of the claw portions pulls the rail clip away from the rail side to remove it.

2. The rail clip attachment / detachment device of claim 1, further comprising a positioning member that contacts a portion of the rail clip to align the attachment / detachment unit portion in a position that enables the rail clip to be attached and detached by the claw portion.

3. 3. The rail clip attaching / detaching device according to claim 1, wherein the attaching / detaching unit is connected to the device body via a damper so as to be movable up and down.

4. A rail clip attachment / detachment device as described in any one of claims 1 to 3, characterized in that it is arranged further away from the rail than the claw portion and is provided with a stopper member arranged in the vicinity of the claw portion and the upper surface of the sleeper.

5. The rails are arranged in pairs and are substantially parallel to each other. A rail clip attachment / detachment device as described in any one of claims 1 to 4, characterized in that it is connected to the device main body via a connecting frame, which is movable along one of the pair of rails, and is provided with a mobility auxiliary body equipped with wheels for moving along the other rail.

Images