JP5344628B2 - Telescopic rail device - Google Patents

Description

  The present invention relates to a rail device that is provided so as to extend and contract so as to intersect the main line rail in a substantially orthogonal direction in order to move the work vehicle from the storage location of the work vehicle provided on the side of the main line rail to the main line rail. It is about.

  2. Description of the Related Art Conventionally, as a telescopic rail device for a railway work vehicle, for example, one described in Patent Document 1 is known. The telescopic rail device is normally in a contracted state in which a movable rail is placed on a fixed rail fixed at a storage location of the work vehicle, and the work vehicle is placed and stored thereon. When necessary, the work vehicle is jacked up, and the movable rail is pulled out by a motor and extended to a predetermined position reaching the main rail. Sprockets are attached to both ends of the fixed rail, and the chain halfway around the sprocket is locked to the movable rail. The movable rail is moved on the fixed rail by drawing this chain by a motor drive. The work vehicle is lowered onto the extended rail and sent to the main line. The work vehicle moves on the extended rail to the main rail, and moves to the main rail to perform the required work. After completion of the work on the main line, the rail device is again extended to the predetermined storage location and jacked up there. In this state, after the movable rail moves backward and returns to the contracted position, the work vehicle is placed on the movable rail.

Japanese Patent Laid-Open No. 3001-146601

In the telescopic rail device, if the movable rail in the contracted state is at a position shifted in the direction orthogonal to the fixed rail, the wheel of the work vehicle cannot be lowered to an appropriate position on the movable rail. For this reason, a means for appropriately positioning the position of the movable rail on the fixed rail in the extended orthogonal direction is necessary. Therefore, the side of the movable rail body extending in the extending direction is made to face the guide portion provided on the fixed rail, thereby preventing the shift in the extending orthogonal direction. However, the main body of the movable rail is made of a long member having a U-shaped cross section opened downward so as to straddle the fixed rail, and it is difficult to make the width uniform in the extending direction. For this reason, the guide portion that is always close to and opposed to the side surface of the movable rail for positioning in the width direction (extension orthogonal direction) with respect to the fixed rail always has a clearance in the width direction with the side surface of the movable rail so as not to bite. Must be set larger. For this reason, there is a problem that play corresponding to the clearance is generated in the width direction of the movable rail in the contracted state, and the position is easily shifted in the extending orthogonal direction.
Accordingly, an object of the present invention is to provide a telescopic rail device in which the position of the movable rail in the contracted state does not shift in the extended orthogonal direction.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the telescopic rail device of the invention according to this application is substantially orthogonal to the main rail in order to move the work vehicle from the storage location of the work vehicle provided on the side of the main rail to the main rail. A rail device in which a rail is provided so as to extend and contract in an extending direction, and includes a fixed rail 1 and a movable rail 2. The fixed rail 1 has a base end in the extension direction and a tip 1b opposite to the base end, and is fixed on the base of the storage place so as to extend in a direction substantially orthogonal to the main rail. The movable rail 2 has a base end 2a in the extending direction and a tip on the opposite side thereof, and can reciprocate between the contracted position and the extended position on the fixed rail 1, and the base end 2a side is fixed at the contracted position. The front end side of the rail 1 is disposed on the front end portion 1b of the fixed rail and the front end side is placed on the fixed rail 1, and the base end 2a side is connected to the front end 1b side of the fixed rail 1 at the extended position. The running surface is made to coincide with the fixed rail 1 in the extending direction. A telescopic drive mechanism is provided for moving the movable rail 2 forward in the extension direction on the fixed rail 1 or retracting in the contraction direction by drawing the chain 5. The movable rail 2 includes a main body 10 having a substantially U-shaped cross section that opens downward so as to straddle the fixed rail 1 in a contracted state, and a rail body 11 that is provided on the upper portion of the main body 10 so as to extend in the extending direction. On the lower flange 7 in the fixed rail 1, feed rollers 13a, 13b, and 13c that roll on the lower edge of the movable rail main body 2 are provided on the left and right of a plurality of places at predetermined intervals in the extending direction. Horizontal positioning rollers 14 are provided on the left and right in one place on the way of extension. The movable rail main body 10 has two left and right lower edges separated from each other in front and rear, in cooperation with the horizontal positioning roller 14 of the fixed rail 1, so that the movable rail 2 and the fixed rail 1 extend in the orthogonal direction. A guide block 15 for regulating the position is provided. The guide block 15 has a vertical guide surface 15c to which the horizontal positioning roller 14 is in rolling contact. When the movable rail 2 is at a predetermined contracted position on the fixed rail 1, the horizontal positioning roller 14 contacts the guide surface 15. To regulate the horizontal position.

  According to the telescopic rail device of the invention according to this application, the horizontal positioning roller 14 on the fixed rail 1 is in contact with the vertical guide surface 15c of the movable rail 2 only at a predetermined position and regulates the horizontal position. Since the horizontal positioning roller 14 does not come into contact with the side surface of the movable rail body 10, even if the width of the movable rail 2 is not uniform in the extending direction, there is no problem. Since the position in the extended orthogonal direction of the movable rail 2 in the contracted state is restricted to an appropriate position, when the wheel W1 of the work vehicle A is lowered onto the movable rail 2, there is a disadvantage that the wheel flange Wb hits the movable rail 2. Does not occur.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic front view of the expansion-contraction rail apparatus based on this invention, (a) is a contracted state, (b) shows an expansion | extension state. It is a front view of the fixed rail in the expansion-contraction rail apparatus of FIG. It is a top view of the fixed rail in the expansion-contraction rail apparatus of FIG. It is an enlarged view of the IV section in FIG. It is an enlarged view of the V section in FIG. FIG. 3 is an enlarged view of a VI part in FIG. 2. It is an enlarged view of the VII part in FIG. It is a VIII-VIII arrow line view in FIG. It is the IX-IX arrow line view in FIG. It is a front view of the movable rail in the telescopic rail apparatus of FIG. It is a top view of the movable rail in the expansion-contraction rail apparatus of FIG. It is the enlarged view which abbreviate | omitted a part of FIG. It is the enlarged view which abbreviate | omitted a part of FIG. It is a XIV-XIV arrow line view in FIG. It is a XV-XV arrow line view in FIG. It is the front view which abbreviate | omitted one part in the contracted state of the expansion-contraction rail apparatus of FIG. It is a XVII-XVII arrow line view in FIG.

Embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a fixed rail 1 is laid at a storage location B of the work vehicle A in a direction substantially orthogonal to the main rail R. The fixed rail 1 has a proximal end 1a and a distal end 1b. The movable rail 2 has a proximal end 2a and a distal end 2b, and extends above the fixed rail 1 between a contracted position shown in FIGS. 1A and 16 and an extended position shown in FIG. 1B. It can be moved back and forth in the direction. That is, when not in use, the movable rail 2 is in a contracted position overlaid on the fixed rail 1 as shown in FIG. 1A, and when in use, the movable rail 2 is in an extended position as shown in FIG. It is in. In the extended position, the movable rail 2 is connected to the distal end 1b side of the fixed rail 1 at the base end 2a side, the traveling surface of the traversing wheel W1 is continuous with the traveling surface of the fixed rail 1, and the main rail R It extends so as to intersect with this.

  A driving sprocket 3 connected to the motor M is provided on the base end 1a side of the fixed rail 1, and a driven sprocket 4 is provided on the front end 1b side. A chain 5 is hung between the drive sprocket 3 and the driven sprocket 4, and the middle of the chain 5 is locked to the base end 2 a side of the movable rail 2. The chain 5 can be routed by driving the motor M. By pulling the chain 5, the movable rail 2 can be advanced on the fixed rail 1 in the extending direction or retracted in the contracting direction.

  As shown in FIGS. 8 and 9, the fixed rail 1 includes an upper flange 6 that receives the wheel W <b> 1 of the work vehicle, a lower flange 7 that is fixed to the base 20, and a vertical web 8 that connects between the centers of both flanges. It comprises. On the upper flange 6, a protrusion 9 is provided so as to extend in the extending direction with a width narrower than that of the upper flange 6. A running surface on which the wheel W1 rolls is formed on the upper surface of the protrusion 9.

  As shown in FIGS. 10 to 15, the movable rail 2 is provided so as to extend in the extending direction at the upper portion of the main body, and the main body 10 having a substantially U-shaped cross section opened downward so as to straddle the fixed rail 1 in the contracted state. The rail body 11 is provided.

  As shown in FIGS. 14 and 15, the rail body 11 of the movable rail includes a ridge portion 12 extending in the extending direction. On the upper surface of the ridge portion 12, a traveling surface on which the wheel W <b> 1 rolls continuously with the traveling surface of the fixed rail 1 in the extended state is formed.

  As shown in FIGS. 2 and 3, on the lower flange 7 of the fixed rail 1, a feed roller 13 a that rolls with the lower edge of the movable rail body 10 placed at three positions on the left and right sides with a predetermined interval in the extending direction. b and c are provided, and horizontal positioning rollers 14 are provided on the left and right of one place (same position as the feed roller 13b) on the way of extension. Except for the pair of left and right rollers 13a on the front end side, the other two left and right rollers 13b, 13c, and 14 are slightly shifted back and forth so that the left and right rollers are arranged in a C shape in plan view. Provided.

  On the other hand, as shown in FIGS. 10 and 11, the movable rail body 10 has positions corresponding to the fixed rail rollers 13 b, 14, and 13 c in the vertical direction at two lower left and right edge portions separated in the extending direction. Guide blocks 15a and 15b are provided on the left and right sides of the frame. The guide blocks 15a and 15b cooperate with the horizontal positioning roller 14 to determine the relative position in the left-right direction of the fixed rail 1 and the movable rail 2, and cooperate with the feed rollers 13b and 13c to determine the relative position in the front-rear direction at the contracted position. regulate.

  That is, as shown in FIGS. 12 to 14, the guide blocks 15 a and 15 b have a vertical guide surface 15 c to which the horizontal positioning roller 14 is in rolling contact and a positioning recess 15 d in which the feed rollers 13 b and 13 c are dropped. The guide surface 15 c is located on the outer side in the left-right direction from the side surface of the movable rail body 10. When the movable rail 2 is at a predetermined position on the fixed rail 1, the horizontal positioning roller 14 is in contact with the guide surface 15c and regulates the position in the left-right direction. When the movable rail 2 is in the contracted position, the rollers 13b and 13c fall into the positioning recess 15d to restrict the relative position of the movable rail 2 in the front-rear direction.

  A guide groove 16 is provided on the inner top surface of the main body 10 on the base end 2a side of the movable rail 2 to receive the base end side of the protrusion 9 of the fixed rail 1 over a predetermined length in the extending direction.

  As shown in FIG. 1, the telescopic rail device for railroad work vehicles of this embodiment is in a contracted state when not in use so as not to obstruct the train passing on the main rail R (FIGS. 1 (a) and 16). It is in. In the contracted state, the movable rail 2 is placed on the fixed rail 1 (FIG. 17a). In this state, the work vehicle A is in the storage location B and is stored with the traversing wheel W1 placed on the movable rail 2.

  At the time of use, first, the vehicle A is lifted by an attached lift device, and the chain 5 is routed by the motor M while the movable rail 2 is free. Since the chain 5 is connected to the base end side of the movable rail 2 on the way, the movable rail 2 moves forward on the fixed rail 1 in the extending direction, and as shown in FIG. The movable rail 2 and the fixed rail 1 are continuous so as to intersect with each other.

  When the rail is extended, the vehicle body of the work vehicle A is lowered, the traversing wheel W1 is lowered onto the fixed rail 1, and this is rolled from the fixed rail 1 onto the movable rail 2, so that the main rail R Move to the top (FIG. 1B). Here, the vehicle body is lifted again, and the chain 5 is pulled in the opposite direction to return the movable rail 2 to the contracted position.

  When the movable rail 2 reaches the contracted position (FIGS. 1A and 16), the work vehicle A is lowered and the traveling wheel W2 is lowered onto the main rail R. Then, the work vehicle A is caused to travel on the main rail R to a predetermined work place. When returning the work vehicle A to the storage location B, the work is performed in the opposite procedure.

  When the movable rail 2 is moved backward, as shown in FIG. 17B, the lower edge of the movable rail is put on the feed rollers 13a, 13b, and 13c and rolled.

  When the positioning block 15b on the base end 2a side passes the horizontal positioning roller 14 on the way back, the roller 14 comes into contact with the vertical guide surface 15c and the base end 2a side of the movable rail 2 is disposed at an appropriate position in the left-right direction. . Further, as shown in FIG. 16, when the retracted position is reached, the feed rollers 13b, c drop into the recess 15d of the guide block 15, and the movable rail 2 overlaps the protrusion 9 of the fixed rail 1 ( 17 (a)), the protrusion 9 is fitted into the guide groove 16 of the movable rail 2, and the feed rollers 13a, 13b, 13c are in a no-load state. At this time, the horizontal positioning roller 14 comes into contact with the vertical guide surface 15c of the guide block 15, and the left and right positions on the tip 2b side of the movable roller 2 are restricted to appropriate positions.

  As described above, since the movable rail 2 is disposed at an appropriate position in the contracted position (FIG. 16), there is no positional deviation between the wheel W1 and the movable rail 2 when the work vehicle is lowered, Is done smoothly.

1 fixed rail 1a base end 1b tip 2 movable rail 2a base end 2b tip 3 driving sprocket 4 driven sprocket 5 chain 6 upper flange 7 lower flange 8 web 9 ridge 10 movable rail body 11 rail body 12 ridge portions 13a, b , C Feed roller 14 Horizontal positioning rollers 15a, b Guide block 15c Guide surface 15d Recess 16 Guide groove 20 Base A Work vehicle B Storage location R Main rail M Motor W1 Traverse wheel W2 Traveling wheel

Claims (3)

In order to move the work vehicle from the storage location of the work vehicle provided on the side of the main rail to the main rail, the rail device is provided so that the rail can extend and contract in an extending direction substantially orthogonal to the main rail,
A stationary rail having a proximal end in the extension direction and a distal end on the opposite side, and fixed on the base of the storage place so as to extend in a direction substantially orthogonal to the main rail;
It has a base end in the extension direction and a tip opposite to the base end, and can reciprocate between the contracted position and the extended position on the fixed rail, and the base end side is on the base end of the fixed rail in the contracted position. Further, the distal end side is arranged on the distal end portion of the fixed rail and is placed on the fixed rail, and at the extended position, the proximal end side is continuous with the fixed rail in the extending direction with the distal end side of the fixed rail and the running surface coincided A movable rail to
In the telescopic rail device comprising the telescopic drive mechanism for moving the movable rail forward in the extension direction on the fixed rail or retracting in the contraction direction by drawing the chain,
The fixed rail is provided so as to extend in an extending direction on the upper flange, the upper flange for receiving the wheel of the work vehicle, the lower flange fixed to the base, the vertical web connecting between the centers of both flanges, and the upper flange. Provided with a protruding ridge,
The movable rail includes a main body having a substantially U-shaped cross section that opens downward so as to straddle the fixed rail in a contracted state, and a rail body provided to extend in an extending direction on an upper portion of the main body.
On the lower flange of the fixed rail, there are provided feed rollers that roll on the lower edge of the movable rail body at a plurality of left and right positions spaced at predetermined intervals in the extending direction, and at one right and left of the extending rail Is provided with a horizontal positioning roller,
The main body of the movable rail is provided with guide blocks for regulating the relative position of the fixed rail in cooperation with the horizontal positioning roller of the fixed rail at two left and right lower edge portions separated in the extension direction. And
The guide block has a vertical guide surface to which the horizontal positioning roller makes rolling contact, and when the movable rail is at a predetermined position on the fixed rail, the horizontal positioning roller is placed on the guide surface of the guide block on the tip side. A telescopic rail device that is in contact with and regulates a horizontal position. On the lower flange in the fixed rail, further, vertical positioning rollers are provided on two left and right sides that are separated in the longitudinal direction,
The guide block of the movable rail has a positioning recess on the lower surface where the vertical positioning roller of the fixed rail rolls down and falls,
When the movable rail is at a predetermined contracted position on the fixed rail, the vertical positioning roller of the fixed rail falls into the positioning recess of the guide block and restricts the position of the movable rail in the extending direction. The telescopic rail device according to claim 1.   The inner top surface portion of the main body on the base end side of the movable rail is provided with a guide groove that movably receives the base end side of the protrusion of the fixed rail over a predetermined length in the extending direction. Item 3. The telescopic rail device according to item 1 or 2.

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