JP4859653B2 - Telescopic rail device for railway work vehicles - 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. This is a type in which a movable rail placed on a fixed rail fixed at a storage location of a work vehicle is extended by a motor drive to a predetermined position when necessary. 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. One end of one sprocket shaft protrudes from the bracket as an angular shaft, and a manual rotation tool such as a wrench can be attached to the protruding portion. Therefore, at the time of a power failure, the movable rail can be manually moved by manually rotating the sprocket and drawing the chain.
JP 2001-146701 A

In the conventional telescopic rail device, when the movable rail in the extended state is manually restored to the contracted state, there is a large frictional resistance between the heavy members so that the movable rail rides on the fixed rail. Therefore, there is a problem that a large driving force against this is required. Even with electric motors, frictional resistance increases due to uneven wear on the sliding surface, which may cause malfunction due to overload. Considering this, there is a problem that the capacity of the motor increases and the power transmission mechanism such as a clutch or a chain becomes large.
Accordingly, an object of the present invention is to provide a telescopic rail device having an operation mechanism that does not require a large force to ride a movable rail on a fixed rail.

  In order to solve the above-described problems, in the invention according to this application, in the telescopic rail device for a work vehicle, the movable rail 2 is configured to have a substantially U-shaped cross-section opened downward so as to straddle the fixed rail 1 and fixed. A pair of leg portions 2d facing both side surfaces of the web 1e of the rail 1 are provided. A support plate 10 extending in the front-rear direction is fixed to the leg 2d on the proximal end side of the movable rail 2 so as to face the side surface of the web 1e on the distal end side of the fixed rail 1 at the extended position. Between the fixed rail 1 and the movable rail 2, a push-up means 11 is provided for pushing up the proximal end side of the movable rail 2 onto the distal end portion of the fixed rail 1 when the movable rail 2 in the extended position is retracted. The push-up means 11 includes a push-up roller 12 and a push-up mechanism 13. The push-up roller 12 is provided on the support plate 10 of the movable rail 2 and protrudes to the outer side opposite to the facing direction of the support plate 10. The push-up mechanism 13 engages with the push-up roller 12 and moves the base end side of the movable rail upward until the base end side of the movable rail 2 at the extended position moves backward and rides on the tip end portion of the fixed rail 1. It is provided on both the left and right sides of the distal end side of the fixed rail 2 so as to give a pushing force. The push-up mechanism 13 is provided with a push-up lever 14 that engages with the push-up roller 12 and stands and falls, and a biasing means 15 that constantly urges the push-up lever 14 to rotate in the standing direction. When the movable rail 2 is in the extended position, the push-up lever 14 is pushed by the push-up roller 12 and falls while urging the biasing means 15, and the base end of the movable rail 2 is above the tip of the fixed rail 1. When the urging unit 15 is in the position, the urging unit 15 urges the push-up roller 12 to be pushed up and stand up. Accordingly, when the movable rail 2 is retracted in the contracting direction by electric or manual operation, the fixed rail 1 and the movable rail 2 do not slide, and therefore, the frictional resistance accompanying the sliding does not occur. The push-up means 11 assists the push-up force.

  According to the invention of this application, when the movable rail in the extended position is operated to move in the contraction direction by electric or manual operation, the sliding between the fixed rail 1 and the movable rail 2 does not occur. The initial force for pushing up the base end of the movable rail 2 onto the tip of the fixed rail 1 is assisted by the biasing force of the push-up mechanism 13 without causing the accompanying frictional resistance, so it is relatively easy with a small force. The move operation can be performed.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of a telescopic rail device according to the present invention, where (a) shows a contracted state, (b) shows an expanded state, and FIG. 2 shows a front view of the telescopic rail device according to the present invention in a contracted state. 3 is a front view of the telescopic rail device according to the present invention in an extended state, FIG. 4 is a plan view of the telescopic rail device according to the present invention in an extended state, FIG. 5 is a cross-sectional view taken along line VV in FIG. FIG. 7 is a plan view of the base end side of the fixed rail, FIG. 8 is a side view of the base end side of the fixed rail, and FIG. 9 is a plan view of the connecting portion of the telescopic rail device in the extended state. FIG. 10 is a front view of the connecting portion in the telescopic rail device in the extended state, FIG. 11 is a front view of the connecting portion in the telescopic rail device in the state in which the movable rail is in the initial retracted state, and FIG. Front of the connecting part in the telescopic rail device in the state of riding on , 13 XIII-XIII sectional view in FIG. 10, FIG. 14 is a XIV-XIV cross-sectional view in FIG. 12.

  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. The movable rail 2 is located between the contracted position shown in FIGS. 1 (a) and 2 and the extended position shown in FIGS. 1 (b) and 3. The top can be reciprocated back and forth in the axial direction. That is, the movable rail 2 is in a contracted position overlaid on the fixed rail 1 as shown in FIGS. 1A and 2 when not in use, and when in use, the movable rail 2 is in FIGS. 1B and 3. As shown in FIG. 4, the base end 2a side is continuous with the top surface 1b side of the fixed rail 1 so that the upper surface thereof coincides, and the main rail R is in an extended position extending across the main rail R.

  A drive 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 (FIG. 2) 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, and can be manually routed by using the manual operation mechanism 6 shown in FIGS. 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. 6 to 8, a motor M is attached to the lower portion of the fixed rail 1 on the base end 1 a side, and its rotation is connected to the shaft 9 of the drive sprocket 3 via a chain 7 and a clutch 8. The One end of the shaft 9 is a square shaft 9a so that a manual rotating instrument such as a wrench can be engaged.

  As shown in FIG. 5, the fixed rail 1 includes an upper flange 1 c that receives the wheel W <b> 1 of the work vehicle, a lower flange 1 d that is fixed to the base 20, and a vertical web 1 e that connects between the centers of both flanges. It has. As shown in FIG. 2, the position where the upper flange 1c ends is the tip 1b of the fixed rail 1, and an extension portion 1f is provided at the tip. The extending portion 1f is formed by extending a lower flange 1d and a web 1e, and a driven sprocket 4 is provided here. The base end portion of the movable rail 2 in the extended position is placed on the extending portion 1f. As shown in FIG. 5, the movable rail 2 has a traveling part 2c for mounting the wheel W1 of the work vehicle on the upper part and a pair of leg parts 2d facing each other on the lower part, and the whole is substantially U-shaped in cross section. It is configured in a shape and is open downward so that the fixed rail 1 can be straddled at the contracted position. An edge plate portion 2e that is bent inward and extends horizontally is provided at the lower end edge of the leg portion 2d, and rolls on a roller 1g provided at a required location on the lower flange 1d of the fixed rail. Yes.

  As shown in FIGS. 9 and 10, the leg 2d on the base end 2a side of the movable rail 2 has a pair of parallel members extending so as to face the side surface of the web 1e on the front end 1b side of the fixed rail 1 at the extended position. The support plate 10 is fixed.

  Between the distal end 1b of the fixed rail 1 and the proximal end 2a of the movable rail 2, when the movable rail 2 in the extended position is retracted, the proximal end 2a side of the movable rail 2 is set to the distal end 1b of the fixed rail 1. Push-up means 11 for pushing up is provided.

  The push-up means 11 includes a push-up roller 12 and a push-up mechanism 13. The push-up roller 12 is provided on the support plate 10 of the movable rail 2 so as to protrude outward in the left-right direction.

  The push-up mechanism 13 is provided on the base 20 integrally with the fixed rail 1 and located on both the left and right sides of the fixed rail 1 on the tip 1b side. The push-up mechanism 13 is used for push-up until the base end 2a side of the movable rail 2 in the extended position (FIG. 10) retreats to the right in the drawing and rides on the tip 1b portion of the fixed rail 1 (FIG. 12). Engaging with the roller 12, a force for pushing the base end 1 a side of the movable rail 2 upward is applied.

  The push-up mechanism 13 includes a push-up lever 14 that is pivotally supported so as to be engaged with the push-up roller 12 so as to be erected and toppled over, and a biasing means 15 that constantly urges the push-up lever 14 to rotate in the standing direction. . When the movable rail 2 is in the extended position (FIG. 10), the push-up lever 14 is pushed by the push-up roller 12 and falls while urging the biasing means 15, and the base end 2a portion of the movable rail 2 is When it is in a position (FIG. 12) on the front end 1b of the fixed rail 1, it is urged by the urging means 15 so that the urging means 15 pushes up the push-up roller 12 to stand up. The biasing means 15 includes a spring 16, a connection lever 17 that rotates integrally with the push-up lever 14, and a rod 18 that couples between the spring 16 and the connection lever 17.

  The push-up lever 14 includes a receiving surface 14a and an engaging surface 14b that are arranged substantially at right angles to each other. The mounting surface 14a is disposed substantially horizontally when the lever 14 is in the standing position (FIG. 12), and is disposed so as to stand approximately 45 ° when the lever 14 is in the falling position (FIG. 10). The engaging surface 14b is disposed substantially vertically when the lever 14 is in the standing position (FIG. 12), and is disposed at a falling angle of approximately 60 ° when the lever 14 is in the falling position (FIG. 10). The mounting surface 14a is in a horizontal position until the base end 2a of the movable rail 2 moving forward falls from the front end 1b of the fixed rail 1 (FIG. 12), and supports the push-up roller 12 thereon. The engaging surface 14b engages with the push-up roller 12 and rotates together with the receiving surface 14a while the base end 2a of the movable rail 2 moving forward falls from the distal end 1b of the fixed rail 1 (FIGS. 11 and 10). When the rail 2 reaches the extended position (FIG. 10), the rail 2 is placed at a predetermined fall angle, and the push-up roller 12 is placed and held thereon.

  As shown in FIGS. 10 to 12, a traveling roller 19 for rolling on the lower flange 1 d of the fixed rail 1 is provided below the leg 2 d on the proximal end side of the movable rail 2. The movable rail 2 smoothly moves on the rail 1 by its running roller 19 and the roller 1g on the fixed roller 1.

  In the extended state shown in FIG. 10, the roller 19 is disengaged from the lower flange 1 d of the fixed rail 1, and the base end portion of the movable rail 2 is supported on the extending portion 1 f of the fixed rail 1. The upper surface of the traveling portion 2 c coincides with the upper surface of the upper flange 1 c of the fixed rail 1.

  The telescopic rail device for railroad work vehicles of this embodiment is in a contracted state (FIGS. 1a and 2) when not in use so as not to obstruct the train passing on the main rail R. In the contracted state, the movable rail 2 is placed on the fixed rail 1. 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 axial direction, and as shown in FIGS. The movable rail 2 and the fixed rail 1 are continuous so as to intersect with the main rail R.

  Just before the movable rail 2 reaches the extended position, almost simultaneously with the traveling roller 19 falling from the tip of the lower flange 1d of the fixed rail 1, the push-up roller 12 of the movable rail 2 overturns the push-up lever 14 and compresses the spring 16. Then, the biasing means 15 is stored.

  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 comes to the contracted position (FIG. 1A), the work vehicle A is lowered and the 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 rotation of the motor M stops due to a power failure or the like during the expansion / contraction operation, the clutch 8 is removed, a manual rotation tool such as a wrench is attached to the angular shaft 9a of the drive sprocket 3, and the chain 12 is routed. Thus, the expansion / contraction operation can be continued immediately.

  In the initial stage of the contraction operation, it is necessary to make the base end 2a of the movable rail 2 ride on the upper flange 1c of the distal end 1b of the fixed rail 1 (the traveling roller 19 is on the lower flange 1d of the fixed rail 1). At this time, the push-up lever 14 is rotated in the standing direction by a spring force, whereby the base end portion of the movable rail 2 is pushed up via the push-up roller 12. For this reason, the base end portion of the movable rail 2 does not make frictional contact with the distal end portion of the fixed rail 1, and therefore, the initial contraction operation can be performed with a light force.

  The present invention is applied to a telescopic rail device for moving a work vehicle from a storage location of the work vehicle provided on the side of the main rail on the railroad track to the main rail.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic front view of the expansion-contraction rail apparatus based on this invention, (a) shows a contracted state, (b) shows an expansion | extension state. It is a front view of the contraction state of the expansion-contraction rail apparatus which concerns on this invention. It is a front view of the expansion state of the expansion-contraction rail apparatus which concerns on this invention. . It is a top view of the expansion state of the expansion-contraction rail apparatus which concerns on this invention. It is VV sectional drawing in FIG. It is a front view of the base end side of a fixed rail. It is a top view of the base end side of a fixed rail. It is a side view of the base end side of a fixed rail. It is a top view of the connection part in the expansion-contraction rail apparatus of an expansion | extension state. It is a front view of the connection part in the expansion-contraction rail apparatus of an expansion | extension state. It is a front view of the connection part in the expansion-contraction rail apparatus in which a movable rail is in the initial stage of retreat. It is a front view of the connection part in the expansion-contraction rail apparatus in the state which the movable rail got on the fixed rail in the early stage of retreat. It is XIII-XIII sectional drawing in FIG. It is XIV-XIV sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed rail 1a Base end 1b Front end 1c Upper flange 1d Lower flange 1e Web 1f Extension part 2 Movable rail 2a Base end 2b Tip 2c Traveling part 2d Leg part 2e Edge plate part 3 Drive bracket 4 Drive bracket 5 Chain 6 Manual operation mechanism 7 Chain 8 Clutch 9 Shaft 10 Square shaft 11 Push-up means 12 Push-up roller 13 Push-up mechanism 14 Push-up lever 14a Loading / receiving surface 14b Engagement surface 15 Energizing means 16 Spring 17 Connection lever 18 Rod 19 Traveling roller 20 Base A Work vehicle B Storage location R Main rail M Motor W1 Traverse wheel W2 Traveling wheel

Claims (2)

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 to be extendable in the front-rear direction so as to intersect the main rail in a substantially orthogonal direction. ,
A stationary rail having a proximal end and a distal end and fixed on the base of the storage location so as to extend in a direction substantially orthogonal to the main rail;
The base end side has a base end and a tip end, the base end side is placed on the base end portion of the fixed rail, and the tip end side is placed on the tip end portion of the fixed rail. A movable rail provided so that the front end side and the upper surface of the fixed rail coincide with each other and can be reciprocated in the front-rear direction along the axis of the fixed rail between an extension position continuous with the fixed rail in the axial direction;
A drive sprocket provided on the base end side of the fixed rail and connected to the motor; a driven sprocket provided on the front end side of the fixed rail;
A chain that is hung between the drive sprocket and the driven sprocket and locked on the movable rail on the way;
A drive mechanism for routing the chain,
In the telescopic rail device that advances the movable rail in the extension direction on the fixed rail by retracting the chain, or retracts in the contraction direction,
The fixed rail comprises an upper flange for receiving a wheel of a work vehicle, a lower flange fixed to the base, and a vertical web connecting between the centers of both flanges,
The movable rail is configured to have a substantially U-shaped cross section that is opened downward so as to straddle the fixed rail in a contracted state, and has a pair of leg portions facing both the left and right side surfaces of the web of the fixed rail,
Supporting plates extending to the left and right side surfaces of the web on the distal end side of the fixed rail in the extended position are fixed to the leg portions on the proximal end side of the movable rail,
Between the fixed rail and the movable rail, a push-up means is provided for pushing up the base end side of the movable rail onto the distal end portion of the fixed rail when the movable rail in the extended position is retracted.
The push-up means includes a push-up roller provided on the support plate so as to protrude outward, which is opposite to the opposite direction of the support plate, and a base end side of the movable rail in the extended position so that the fixed rail A push-up mechanism provided on each of the left and right sides of the front end of the fixed rail so as to apply a force to engage the push-up roller and push the base end of the movable rail upward until it rides on the front end. And
The push-up mechanism includes a push-up lever that engages with the push-up roller and rises and falls, and a biasing means that constantly urges the push-up lever to rotate in the standing direction.
The push-up lever is pushed by the push-up roller when the movable rail is in the extended position and falls while urging the biasing means, and the base end of the movable rail rides on the tip of the fixed rail. The biasing means is urged by the urging means to stand up by pushing up the push-up roller when the urging means is released,
The telescopic rail device, wherein the push-up mechanism assists the initial force when the movable mechanism retracts the movable rail in the contracting direction. The push-up lever is arranged substantially horizontally at the standing position, and is placed so as to stand up at a predetermined angle at the fall position, and is arranged almost vertically at the standing position, and at a predetermined fall angle at the fall position. An engaging surface to be disposed;
The mounting surface is arranged to be in a horizontal position until the base end of the movable rail moving forward falls from the front end of the fixed rail, and is placed so as to receive the push-up roller,
The engaging surface engages with the push-up roller while the base end of the movable rail moving forward falls from the tip of the fixed rail, and rotates together with the mounting surface, and when the movable rail reaches the extended position, The telescopic rail device according to claim 1, wherein the telescopic rail device is disposed at a predetermined fall angle so as to rest on the push-up roller.

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