JP2007255131A - Rail replacing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rail replacing device capable of quickly and easily performing work corresponding to a change by the minimum number of persons, without stopping the rail replacing device, when a temporary placing position of existing rails is changed, when replacing rails. <P>SOLUTION: This invention is the rail replacing device used when laying a pair of right-left new rails R2 on a rail laying position after removing the existing rails, by removing a pair of right-left existing rails R1 laid on a roadbed, and has a pair of right-left guide means 20 guiding to the temporary placing position outside of the rail laying position while supporting the removed existing rails and a driving source 21a laterally expanding these guide means 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rail exchanging device used when exchanging an existing rail for rail with a new rail.

  When replacing existing rails with new rails, the pair of left and right existing rails laid on the roadbed is removed, and a pair of left and right new rails that are temporarily placed on the outside of the existing rails and approximately parallel to the existing rails. Lay the rail at the rail laying position after removing the existing rail. Since this work requires a lot of labor and manpower, a rail exchanging device has been proposed for the purpose of promoting the efficiency of the work.

  For example, the present inventors have proposed a rail exchange device shown in Patent Document 1. 4 and 5 show a schematic configuration of the rail exchanging device 1, FIG. 4 is a top view, and FIG. 5 is a side view. In the following description, unless otherwise specified, the extending direction of the rail is defined as front and rear, and the width direction of the rail is defined as left and right. The rail exchanging device 1 is composed of three parts: a first exchanging device 2, a second exchanging device 3, and a third exchanging device 4, from the front (left side in the figure).

  The first switch 2 includes a main body 5 extending left and right on an existing rail R1 laid at a rail laying position, and a pair of left and right wheels 6 attached to the front and rear of the main body 5 so as to be able to travel on the existing rail R1. And the drive unit 7 for driving the wheel 6 and the left and right ends of the main body 5, and the new rail R2 temporarily placed outside the rail laying position is guided to the rail laying position while being movably supported forward and backward. A rail stand 8 is provided. A seat 9 for an operator P who operates the drive unit 7 is provided behind the drive unit 7.

  The second exchange 3 includes a main body 10 extending left and right on a new rail R2 laid at a rail laying position after removal of the existing rail R1, and a left and right attached to the main body 10 so as to be able to travel on the new rail R2. A pair of travel units 11 and a rail stand 12 that is provided at both left and right ends of the main body 10 and that guides the outside while supporting the existing rail R1 that has been removed from the rail installation position so as to be movable forward and backward. Yes.

  The third switching device 4 includes a main body 13 extending left and right on a new rail R2 laid at a rail laying position, and a pair of left and right traveling units 14 attached to the main body 13 so as to be able to travel on the new rail R2. A rail stand 15 provided at both left and right ends of the main body 13 and guided toward the outer temporary placement position while supporting the existing rail R1 guided to the outside via the rail stand 12 so as to be movable back and forth. I have.

  Here, as shown in FIG. 4, the left and right intervals of the rail stands 8 and 12 in the first exchange 2 and the second exchange 3 are slightly wider than the left and right intervals of the rail laying position, and the rail stand 15 in the third exchange 4. Is set slightly wider than the distance between the rail stands 8 and 12. Furthermore, the rail stands 8, 12, and 15 function as tilt prevention means for supporting the rails R1 and R2 being exchanged from the left and right sides and preventing the rails R1 and R2 from tilting in the left and right directions.

  Further, the first exchange 2 and the second exchange 3, and the second exchange 3 and the third exchange 4 are provided with a predetermined pull wire W extending between the end portions of the main bodies 5, 10, 13 thereof. Connected back and forth at intervals. As a result, the second switch 3 and the third switch 4 can travel along with the first switch 2 as the first switch 2 travels.

  When exchanging the rails R1 and R2, first, the first exchange 2 is installed on the existing rail R1 laid at the rail laying position, and the existing rail R1 located behind the first exchange 2 is removed to the outside. Next, the new rail R2 temporarily placed on the outside of the existing rail R1 in parallel with the existing rail R1 is guided from the front through the rail stand 8 to the rail laying position after the existing rail R1 is removed. Further, the guided new rail R2 is laid at the rail laying position, and the second exchange 3 and the third exchange 4 are installed on the new rail R1. The removed existing rail R1 is guided to a temporary placement position outside the rail laying position via the rail stands 12 and 15, and a temporary placement rail support device (not shown) installed at the temporary placement position. On top, it is temporarily placed in parallel with the existing rail.

Then, by continuously performing the above operation while running the rail exchanging device 1 forward, as shown in FIGS. 4 and 5, the new rail R2 is laid and the existing rail R1 is removed at the same time. R1 and R2 are exchanged. That is, according to this rail exchanging device 1, the rails R1 and R2 can be exchanged quickly and easily with a small number of people.
JP 2004-183386 A (page 3-8, FIGS. 1 to 6)

  As described above, the existing rail R1 removed along with the replacement of the rails R1 and R2 is guided to the temporary placement position via the rail stands 12 and 15 and temporarily placed. Since the distance between the left and right of the temporary placement position (the distance indicated by reference numeral S1 in FIG. 4) is normally constant, the distance between the left and right of the rail stand 15 in the third exchange 4 is also usually adjusted to this distance S1. is there. On the other hand, when exchanging the rails R1 and R2 in a place where the interval S1 of the temporary placement position of the existing rail R needs to be narrower than usual, such as a tunnel or a roadbed bridge (three main girder sections), a rail stand It is necessary to narrow the left and right intervals of 15 in accordance with this interval S1 and pass the tunnel, the road bridge, etc., and then increase the left and right intervals of the rail stand 15 again to match the normal interval S1.

  However, in the above-described conventional rail exchanging device 1, since the left and right intervals of the rail stand 15 are changed by manually extending and retracting the third exchanging machine 4, the rail exchanging device 1 is stopped each time the rail exchanging device 4 is changed. After the existing rail R1 on the stand 15 is lifted using a jack or the like and the third exchange 4 is manually expanded and contracted, the existing rail R1 needs to be lowered onto the rail stand 15 again. Therefore, changing the distance between the left and right sides of the rail stand 15 requires a lot of time and a large number of personnel, and it is necessary to pay due consideration to safety.

  The present invention has been made in view of the above circumstances. When the left and right distance S1 of the temporary placement position of the existing rail R1 is changed, the work corresponding to the change is performed with the minimum personnel without stopping the rail exchange device. It is an object of the present invention to provide a rail exchanging device that can be implemented quickly and easily.

  The present invention is a rail exchanging device used when removing a pair of left and right existing rails laid on a roadbed and laying a pair of left and right new rails at a rail laying position after removal of the existing rails, It comprises a pair of left and right guide means for supporting a rear existing rail and guiding it to a temporary placement position outside the rail laying position, and a drive source for extending and retracting the guide means to the left and right.

  In this case, the guide means includes, for example, a main body and a pair of left and right movable parts that move left and right from the main body by the drive source.

  For example, a cylinder that expands and contracts to the left and right is used as the drive source. This cylinder expands and contracts by operating a manual pump, for example.

  The rail exchanging device also includes a first device for guiding a new rail temporarily placed outside the rail laying position to the rail laying position, and a first device for guiding the existing rail removed from the rail laying position to the guide means. It is desirable to have two devices.

  In the rail exchanging device of the present invention, the distance between the left and right of the existing rail after removal is not adjusted directly by human power, but is adjusted by extending and contracting the guide means to the left and right using the driving force of the driving source. This eliminates the need to lift and lower the existing rail and extend and retract the device by manpower, which has been required in the past.As a result, the left and right intervals of the existing rail after removal can be minimized without stopping the rail exchange device. It can be changed quickly and easily by personnel.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention relates to an improvement of a third exchange (guide means) used in a rail exchange apparatus as shown in FIGS. 4 and 5, for example, and includes a first exchange and a second exchange (first apparatus and first exchange). For the second device, the same rail exchange device as shown in FIGS. 4 and 5 can be used. Therefore, in the following description, only the description regarding the third switch will be given, and the first switch and the second switch will be assigned the same reference numerals as those in FIGS. 4 and 5 and the description thereof will be omitted.

  1 to 3 show an example of a third exchange 20 used in the rail exchange device of the present invention. FIG. 1 is a top view, FIG. 2 is a partial sectional view as seen from the side, and FIG. The partial cross section figure of the principal part which looked at is shown. The third switch 20 includes a main body 21 extending left and right on the new rail R2 laid at the rail laying position, and a pair of left and right attached to the left and right ends of the main body 21 so as to run on the new rail R2. A traveling unit 22, a pair of left and right slide frames 23 housed in the main body 13, and a pair of left and right rail stands 24 attached to the tip of the slide frame 23 are provided.

  The main body 21 is a square cylindrical member extending in the left-right direction, and a pair of hydraulic cylinders (drive sources) 21a extending in the left-right direction are housed in the center thereof, and rods 21b are connected to the individual hydraulic cylinders 21a. , Each projecting outward (toward the rail stand 24) (only one hydraulic cylinder 21a is shown in FIGS. 2 and 3). Further, a spur gear 21c is supported at the tip of each rod 21b so as to be rotatable around a shaft 21d extending in the front-rear direction. On the main body 21, two hydraulic pumps (manual pumps) 21f that are driven by the operation of the lever 21e are attached. A pair of pressure-resistant hoses 21g extending from the individual hydraulic cylinders 21a are attached to the individual hydraulic pumps 21f via switching levers 21h. By operating the lever 21e by switching the switching lever 21h, the operating oil is supplied. The hydraulic pump 21f sends the hydraulic cylinder 21a to either the expansion side or the contraction side via one of the pair of pressure-resistant hoses 21g. As a result, the rod 21b moves to the left or right.

  Reference numeral 21 i denotes fixed pins that are supported on the front and rear side surfaces of the main body 21 at both ends of the main body 21 so as to be movable forward and backward. These fixing pins 21 i can take a lock releasing position in which the tip protrudes inward from the inner surface of the main body 21 and a lock position in which the tip is retracted from the inner surface of the main body 21. The fixing pin 21i is normally biased to the unlocking position by the action of a built-in spring (not shown), but is locked by pulling the fixing pin 21i toward the front and rotating it around its axis. Thus, the locked position is maintained.

  The traveling unit 22 includes a pair of left and right frames 22a supported below the main body 21, and wheels 22c rotatably supported around a shaft 22b extending left and right between the frames 22a at the front and rear ends of the frames 22a. And a fall-preventing roller 22d that contacts the head portion H of the new rail R2 from below when the traveling unit 22 is installed on the new rail R2, and supports the new rail R2 so as to be movable between the wheels 22c. ing. The fall prevention roller 22d can be rotated up and down around a shaft (not shown) extending in the front-rear direction. As a result, the support position indicated by a solid line in FIG. 1 and the release position indicated by a two-dot chain line in FIG. It is possible to take As shown by the solid line in FIG. 1, the fall prevention roller 22d is rotated to the support position, and the new rail R2 is sandwiched between the wheel 22c and the fall prevention roller 22d, so that the third switch 20 can travel on the new rail R2. Without interfering, the derailment of the third exchange 20 from the new rail R2 is prevented.

  The slide frame 23 is a pair of left and right square cylindrical members inserted into the main body 21 from the left and right, and is supported by the main body 21 so as to be slidable along the inner wall of the main body 21. On the inner peripheral surface of the slide frame 23 on the insertion side to the main body 21 (the central portion side of the main body 21, that is, the hydraulic cylinder 21a side), a rack 23a extending left and right is attached downward. A spur gear 21c (described above) attached to the tip of a rod 21b extending from the hydraulic cylinder 21a is engaged from below. A rack 21j extending left and right is attached to the inner peripheral surfaces of both ends of the main body 21 downward, and the spur gear 21c is meshed with the rack 21j from above.

  Here, as shown in FIGS. 1 and 2, the positions of the racks 21j, 23a and the spur gear 21c are the most central side of the rack 21j (hydraulic cylinder) when the slide frame 23 is completely accommodated in the main body 21. 21a side) meshes with the spur gear 21c and the outermost side of the rack 23a (rail stand 24 side) meshes with the spur gear 21c, while the slide frame 23 is extended from the main body 21 to the outermost side as shown in FIG. The outermost side of the rack 21j is engaged with the spur gear 21c, and the most central side of the rack 23a is engaged with the spur gear 21c.

  Reference numeral 23b denotes a hole into which the tip of the fixing pin 21i protruding inward from the inner surface of the main body 21 is inserted when the above-described fixing pin 21i is in the unlocked position. A plurality of holes 23b are formed on the front and rear side surfaces of the slide frame 23 at predetermined intervals along the left-right direction. Normally, the slide frame 23 is supported by the main body 21 through the fixing pin 21i by inserting the tip of the fixing pin 21i at the unlocking position into any of the holes 23b. As a result, the slide frame 23 is unnecessary. Is prevented from stretching.

  The rail stand 24 includes a horizontal pedestal 24a attached to the tip of the slide frame 23, and a running roller 24b disposed at the center of the pedestal 24a so as to be rotatable about a left and right axis (not shown). A horizontal roller 24d rotatably supported around the shaft 24c at the upper end of a vertical shaft 24c erected on the pedestal 24a inside the running roller 24b (on the slide frame 23 side), and the horizontal roller 24d and an auxiliary roller 24f supported on a pedestal 24a so as to be rotatable around a vertical shaft 24e on the opposite side across the running roller 24b. Here, as shown in FIGS. 1 and 3, when the removed existing rail R1 is placed on the traveling roller 24b, the position of the horizontal roller 24d is applied to the side surface of the head H of the existing rail R1 from the inside. The head H is set so as to support the head H from the inside. The auxiliary roller 24f is for preventing unnecessary movement of the existing rail R1 mounted on the traveling roller 24b to the outside and maintaining the existing rail R1 on the traveling roller 24b. The horizontal roller 24d and the auxiliary roller 24f also function as an inclination preventing unit that supports the existing rail R1 after removal from the left and right sides and prevents the existing rail R1 from tilting in the left and right direction.

  Further, the width of the third exchange 20 in the left-right direction is such that the rail stand 24 is set when the slide frame 23 is slightly extended left and right from the state in which it is completely stored in the main body 21 (the state shown in FIGS. 1 and 2). Is set in advance so as to coincide with the (normal) left and right spacing S1 of the temporary placement position of the existing rail R1 after removal. As a result, the slide frame 23 is expanded when the interval S1 is expanded from the normal interval, and the slide frame 23 is contracted when the interval S1 is decreased from the normal interval. The third switch 20 can be expanded and contracted in accordance with the increase / decrease.

  Next, the exchange of the rails R1 and R2 by the rail exchange device provided with the third exchange 20 having the above configuration will be described below. When exchanging the rails R1 and R2, first, the first exchange 2 is installed on the existing rail R1 laid at the rail laying position, and the existing rail R1 located behind the first exchange 2 is removed to the outside. Next, the new rail R2 temporarily placed on the outside of the existing rail R1 in parallel with the existing rail R1 is guided from the front through the rail stand 8 to the rail laying position after the existing rail R1 is removed. Further, the guided new rail R2 is laid at the rail laying position, and the second exchange 3 is installed on the new rail R2. In addition, in this rail exchanging device, the third exchanging device 20 is installed at the position of the third exchanging device 4 of the rail exchanging device 1 shown in FIGS. 4 and 5 instead of the conventional third exchanging device 4.

  In this case, as shown in FIGS. 1 and 2, the third exchange 20 places the wheel 22c on the new rail R2, and rotates the fall prevention roller 22d to the support position as shown by the solid line in FIG. By moving it, it is installed on the new rail R2 in a state in which derailment from the new rail R2 is prevented. Moreover, the 3rd switch 20 is connecting the both ends of the main body 21 and the both ends of the main body 10 of the 2nd switch 12 back and forth like the conventional 3rd switch 4, respectively by the pull wire W, respectively. The first exchange 2 and the second exchange 3 can travel along.

  On the other hand, in the third exchange 20 immediately after being installed on the new rail R2, the slide frame 23 is completely accommodated in the main body 21, as shown in FIGS. Therefore, prior to the removal of the existing rail R1 using the third exchange 20, until the left and right spacing S2 of the rail stand 24 matches the (normal) left and right spacing S1 of the temporary placement position of the existing rail R1 after removal. It is necessary to extend the slide frame 23 left and right. When the slide frame 23 is extended, first, the fixing pin 21i at the unlocking position is pulled forward to be locked and maintained at the locking position, whereby the fixing pin 21i can be pulled out from the hole 23b and the slide frame 23 can be extended. To do.

  Next, in each hydraulic pump 21f, the switching lever 21h is switched so that the working oil from the hydraulic pump 21f is sent to the extension side of the hydraulic cylinder 21a via one of the pair of pressure hoses 21g, and the lever 21e is operated. . As a result, the rods 21b extending from the individual hydraulic cylinders 21a move outward (toward the rail stand 24) by the action of the operating oil sent to the hydraulic cylinders 21a.

  Then, the spur gear 21c supported at the tip of each rod 21b rotates while moving outward while meshing with the rack 21j attached to the main body 21, and accordingly, the rack 23a attached to the slide frame 23 is rotated. Then, it moves outward while meshing with the spur gear 21c, and the slide frame 23 extends. In the case of the illustrated example, for example, when the rod 21b extends in the state shown in FIG. 1, the spur gear 21c supported at the tip of the rod 21b rotates right while moving toward the right while meshing with the rack 21j. The rack 23a moves toward the right side while meshing with the spur gear 21c, and the slide frame 23 moves (extends) toward the right side.

  Then, the above operation is performed until the left and right distance S2 of the rail stand 24 attached to the tip of the slide frame 23 matches the (normal) left and right distance S1 of the temporarily placed position of the existing rail R1 after removal. When the intervals S1 and S2 match, the fixing pin 21i is returned to the unlocking position, and the tip of the fixing pin 21i is inserted into the nearest hole 23b, thereby supporting the slide frame 23 on the main body 21.

  When the first exchange 2 is moved forward after the above operation is completed, the removed existing rail R1 is sent onto the base 24a of the rail stand 24 of the third exchange 20 via the rail stand 12 of the second exchange 3. And is placed on the traveling roller 24b from the front. The existing rail R1 placed on the traveling roller 24b is supported by the horizontal roller 24d from the inside, and moves backward by the rotation of the traveling roller 24b and the horizontal roller 24d, and is guided to the temporary placement position of the existing rail R1. Then, it is temporarily placed on a temporary rail support device (not shown) installed at this temporary placement position, approximately parallel to the existing rail.

  Then, by continuously performing the above operation while running the rail exchanging device forward, as with the rail exchanging device 1 shown in FIGS. 4 and 5, the laying of the new rail R2 and the removal of the existing rail R1 are simultaneously performed. The rails R1 and R2 are exchanged. That is, according to this rail exchanging device, the rails R1 and R2 can be exchanged quickly and easily with a small number of people.

  On the other hand, when it is necessary to reduce the left-right distance S1 of the temporary placement position of the existing rail R during the replacement of the rails R1 and R2, first, the fixing pin 21i in the unlocking position is first pulled forward and maintained in the locked position. Thus, the fixing pin 21i is pulled out from the hole 23b, and then the hydraulic pump 21f is fed so that the working oil from the hydraulic pump 21f is sent to the contraction side of the hydraulic cylinder 21a via one of the pair of pressure-resistant hoses 21g. The switching lever 21h is switched and the lever 21e is operated. Then, the rods 21b extending from the individual hydraulic cylinders 21a are moved (contracted) toward the central portion side (hydraulic cylinder 21a side) of the main body 21 by the action of the working oil sent to the hydraulic cylinder 21a.

  As a result, the spur gear 21c supported at the tip of each rod 21b rotates while moving toward the center while meshing with the rack 21j attached to the main body 21, and is attached to the slide frame 23 accordingly. The rack 23a moves toward the center while meshing with the spur gear 21c, and the slide frame 23 contracts. In the case of the illustrated example, for example, when the rod 21b contracts in the state shown in FIG. 3, the spur gear 21c supported at the tip of the rod 21b rotates counterclockwise while moving to the left while meshing with the rack 21j. The rack 23a moves toward the left side while meshing with the spur gear 21c, and the slide frame 23 moves (shrinks) toward the left side.

  Then, the above operation is performed until the left-right distance S2 of the rail stand 24 attached to the tip of the slide frame 23 matches the left-right distance S1 of the temporary placement position of the target existing rail R1. When the intervals S1 and S2 coincide with each other, the fixing pin 21i is returned to the unlocking position, and the tip of the fixing pin 21i is inserted into the nearest hole 23b, whereby the slide frame 23 is supported by the main body 21. In order to restore (expand) the left and right distance S1 of the temporarily placed position of the existing rail R that has been narrowed, the above-described operation may be performed to extend the slide frame 23.

  In this rail exchanging device, the distance between the left and right of the existing rail R1 after removal is not adjusted manually, but the slide frame 23 is expanded and contracted to the left and right using the driving force of the hydraulic pump 21f provided in the third exchanging machine 20. It is adjusting. In addition, when the slide frame 23 is expanded and contracted, it is not necessary to raise and lower the existing rail R1 from the rail stand 24 and to support the slide frame 23. Therefore, it is possible to quickly and easily change the left and right distance of the existing rail R1 after removal according to the left and right distance S1 of the temporary placement position of the existing rail R1 with a minimum number of personnel. Further, it is not necessary to stop the rail exchanging device when the slide frame 23 is expanded or contracted. Furthermore, since it is unnecessary to manually lift and lower the existing rail R1 from the rail stand 24 and to support the slide frame 23, it is advantageous in terms of worker safety.

  In addition, this invention is not limited to the said embodiment, What carried out desired correction within the range which does not change the meaning of this invention is also contained in this invention. For example, a pump, a motor, an internal combustion engine, or the like using a fluid other than the hydraulic pump 21f can be used as a drive source for expanding and contracting the slide frame 23, and it goes without saying that the pump is not limited to a manual pump.

It is a partial cross section figure of the 3rd switching machine seen from the side along the arrow A in FIG. 2 which shows the example of the 3rd switching machine used for the rail switching apparatus of this invention. It is a top view which shows the example of the 3rd switching device used for the rail switching apparatus of this invention. FIG. 3 is a partial cross-sectional view of a main part of the third exchange as viewed sideways along an arrow A in FIG. 2, showing a situation when the third exchange shown in FIGS. 1 and 2 is extended. It is a top view which shows schematic structure of the conventional rail exchange apparatus. It is a side view which shows schematic structure of the conventional rail exchange apparatus.

Explanation of symbols

2 First switch (first device)
3 Second switch (second device)
20 Third exchange (guidance means)
21 Body 21a Hydraulic cylinder (drive source)
21f Hydraulic pump (manual pump)
23 Slide frame (movable part)
R1 Existing rail R2 New rail

Claims (5)

A rail exchanging device used for removing a pair of left and right existing rails laid on the roadbed and laying a pair of left and right new rails at a rail laying position after removal of the existing rails,
Rail exchange comprising: a pair of left and right guide means for supporting the existing rail after removal to a temporary placement position outside the rail laying position; and a drive source for extending and retracting the guide means to the left and right apparatus.   The rail exchanging apparatus according to claim 1, wherein the guide means includes a main body and a pair of left and right movable parts that move left and right from the main body by the drive source.   The rail exchanging device according to claim 2, wherein the drive source is a cylinder that expands and contracts to the left and right.   The rail exchange device according to claim 3, wherein the cylinder expands and contracts by operation of a manual pump. A first device for guiding the new rail temporarily placed outside the rail laying position to the rail laying position, and a second device for guiding the existing rail removed from the rail laying position to the guiding means The rail exchanging device according to any one of claims 1 to 4, wherein the rail exchanging device is provided.

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