JP5344627B2 - 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. 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.
In the telescopic rail device as described above, when the movable rail is retracted in the contracting direction, it is necessary to pull up the proximal end of the movable rail onto the distal end portion of the fixed rail. Since the work of raising the movable rail has become difficult due to the increase in the size and weight of the rail accompanying the increase in the weight of the work vehicle, it is necessary to provide a push-up means for pushing up the movable rail onto the tip of the fixed rail. Has been proposed.

Japanese Patent Laid-Open No. 3001-146601 Japanese Patent Laid-Open No. 3008-150819

The moving rail push-up means in the conventional telescopic rail device has a problem that a relatively large site is required to install the movable rail, the structure is complicated, and adjustment at the time of installation is not easy.
Therefore, an object of the present invention is to provide an extendable rail device having a movable rail push-up mechanism that does not require a large site for installation and is easy to install.

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 extending direction and a tip 1b on the opposite side, 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 surfaces 10 and 17 are made to coincide and continue to 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 13 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 14 that is provided on the upper portion of the main body so as to extend in the extending direction. A push-up mechanism 19 that pushes up the base end 2 a of the movable rail 2 in the extended state and reduces the load during the pull-up operation on the fixed rail 1 is provided adjacent to the tip of the fixed rail 1. The push-up mechanism 19 includes a support member 21 fixed on the base 20, a rolling member 22 that is supported by the support member 21 so as to be movable up and down, and rolls below the inner top surface of the movable rail body 13 during expansion and contraction. And a spring 23 that urges the rolling member 22 in the direction of pushing it up.

  According to the device of the invention of this application, it is possible to provide a telescopic rail device having a movable rail push-up mechanism that does not require a large site for installation and is easy to install.

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 II-II sectional drawing in FIG. It is a front view of the front end side of the fixed rail of the expansion-contraction rail apparatus which concerns on this invention. It is a front view of the base end side of the movable rail of the telescopic rail device according to the present invention. It is a front view of the connection part of the base end of the movable rail in the expansion | extension state of the expansion-contraction rail apparatus which concerns on this invention, and the front-end | tip of a fixed rail. It is VI-VI sectional drawing in FIG. It is a top view of the connection part of the base end of a movable rail and the front-end | tip of a fixed rail in the expansion | extension state of the expansion-contraction rail apparatus based on this invention. It is the top view which made the base end side of a movable rail and the front end side of a fixed rail face each other. It is a side view of the movable rail seen from the IX-IX direction in FIG. It is a side view of the fixed rail seen from the XX direction 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. The movable rail 2 is moved forward and backward in the extending direction between the contracted position shown in FIG. 1A and the extended position shown in FIG. It can be reciprocated. 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 on the base end 2a side, and the surface on which the wheel W1 travels is continuous with the traveling surface of the fixed rail 1, and the main rail R It extends so as to intersect with this. Work vehicle A is provided with traveling wheels W2. The work vehicle A travels to a desired work site on the main rail R with the wheels W2 lowered onto the main rail R and the movable rail retracted.

  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. 2 and 9, the fixed rail 1 is composed of an upper flange 6 that receives the transverse wheel W <b> 1 of the work vehicle, a lower flange 7 that is fixed to the base 20, and a vertical web that connects between the centers of both flanges. 8 and. On the upper flange 6, a protrusion 9 extending in the extending direction is provided. A running surface 10 on which the tread surface Wa of the traversing wheel W <b> 1 rolls is formed on the upper surface of the ridge 9, and base portions 11 are formed on both sides of the ridge 9. In addition, the outer periphery of the flange portion Wb of the wheel rolls while slightly floating on the upper surface of the base portion 11.

  As shown in FIGS. 3, 8, and 9, the upper flange 6 of the fixed rail 1 is formed with an extension portion 9 a that extends the protrusion 9 longer than the base portion 11 toward the tip side on the tip side. The missing portion 12 in which the position corresponding to the base portion corresponding to the predetermined length is missing is formed.

  As shown in FIGS. 2 and 10, the movable rail 2 is provided so as to extend in the extending direction at the upper portion of the main body 13 having a substantially U-shaped cross section opened downward so as to straddle the fixed rail 1 in the contracted state. The rail body 14 is provided.

  The rail body 14 of the movable rail includes a ridge portion 15 extending in the extending direction, and a base portion 16 extending below the ridge portion 15 along both sides of the ridge portion 15. On the upper surface of the ridge 15, a running surface 17 is formed on which the tread surface Wa of the wheel W <b> 1 rolls continuously with the running surface 10 of the fixed rail 1 in the extended state. The base portion 16 is continuous with the base portion 11 of the fixed rail 1 in the extended state.

  As shown in FIGS. 4 and 8, the base portion 16 of the rail body 14 has, on the base end 2 a side of the movable rail, two fork portions 16 a that extend the base portion 16 to the base end side longer than the protruding portion 17. It comprises. In the extended state, the extended portion 9 a of the protrusion of the fixed rail 1 is fitted between the two fork portions 16 a, and the fork portion 16 a is configured to fit into the missing portion 12 of the fixed rail 1.

  In order to retract the movable rail 2 in the extended state, an operation of pulling up the base end 1a side of the movable rail 2 onto the distal end 1b of the fixed rail 1 is required. A push-up mechanism 19 for reducing the load at that time is provided adjacent to the tip 1 b of the fixed rail 1.

The push-up mechanism 19 includes a spring case 21 that is a support member fixed on the base 20, a roller 22 that is a rolling member that is supported on the base case 20, and a spring that urges the roller 22 in the push-up direction. 23. In the extended state of the rail shown in FIG. 5, the base end portion of the movable rail 2 is supported on the roller 22 of the push-up mechanism. As shown in FIG. 6, the roller 22 rolls under the inner top surface of the movable rail body 13 during the rail expansion / contraction operation. As shown in FIG. 5A, the spring 23 is set to a spring force that pushes the base end 2 a of the movable rail 2 slightly upward from the tip 1 b of the fixed rail 1 in the extended state of the rail. . That is, since the set load value of the spring 23 only needs to share the mass of one side of the movable rail 2, the stroke is equal to or less than half the weight of the movable rail 2, and the stroke is the height of the fixed rail 1 when the movable rail is stored. Set to the difference.
As shown in FIGS. 5A to 5C, when the work vehicle A moves onto the main rail R, when the wheel W1 passes through the connection portion between the fixed rail 1 and the movable rail 2, the wheel W1 is concerned. While the tread surface Wa rolls on the running surface 10 of the fixed rail 1, the flange portion Wb rides on the fork portion 16 a of the movable rail 2 and pushes the movable rail 2 down to substantially the same height as the fixed rail 1. Thereafter, the tread surface Wa of the wheel smoothly moves onto the traveling surface 17 of the movable rail.
Conversely, when the work vehicle A moves from the main rail R to the storage location, the wheels W1 are connected to the fixed rail 1 and the movable rail 2 in the order of FIG. 5 (c)-(b)-(a). Pass through the connection. That is, the work vehicle A compresses the spring 23 of the push-up mechanism 19 by its own weight, pushes down the base end 2a side of the movable rail 2, and makes the fixed rail 1 and the running surfaces 10 and 17 of the movable rail 2 continue to be fixed smoothly. Transfer onto rail 1. When the flange Wb of the wheel W1 passes through the fork portion 16a of the movable rail 2, the spring 23 of the push-up mechanism 19 returns, and the base 2a side of the movable rail 2 is pushed up again via the roller 22, and the state shown in FIG. It becomes.

  As shown in FIG. 5, an auxiliary roller 24 serving as a guide when the movable rail 2 is pulled up onto the fixed rail 1 is provided on the lower flange 7 on the front end 1 b side of the fixed rail 1. On the other hand, a slope 13a is formed in the lower part of the main body 13 on the base end 2a side of the movable rail 2 so as to make rolling contact with the auxiliary roller 24 during the backward movement.

  The telescopic rail device for railroad work vehicles of this embodiment is in a contracted state (FIG. 1 (a)) 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 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. In the extended state of the rail, the base end portion 2 a of the movable rail 2 is supported on the roller 22 (FIG. 6) of the push-up mechanism 19.

  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 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.

  At the initial stage of the contracting operation, it is necessary to make the base end 2a of the movable rail 2 ride on the upper flange 1c of the front end 1b of the fixed rail 1. At this time, since the push-up mechanism 19 pushes up the base end 2a side of the movable rail 2 with the force of the spring 23, the riding operation can be smoothly performed with a small force. The push-up mechanism 19 basically can be manufactured at a low cost with a simple configuration including the spring 23 and the roller 22, and is installed adjacent to the front end 1 b of the fixed rail 1. Because it is a size that can be hidden, it does not require a large site for installation, and installation is extremely easy.

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 9a extending portion 10 running surface 11 guide portion 12 missing portion 13 movable Rail body 14 Rail body 15 Projection portion 16 Base portion 17 Traveling surface 18 Guide portion 19 Lifting mechanism 20 Base 21 Spring case 22 Roller 23 Spring 24 Auxiliary roller A Work vehicle B Storage location R Main rail M Motor W1 Traverse wheel W2 Wheel for traveling

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 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 is capable of reciprocating 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 at 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 with each other. 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 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.
Adjacent to the distal end of the fixed rail, there is provided a push-up mechanism that pushes up the base end of the movable rail in the extended state to reduce the load during the lifting operation on the fixed rail,
The push-up mechanism includes a supporting member fixed on the base, a rolling member that is supported by the supporting member so as to be movable up and down, and rolls below the inner top surface of the movable rail body during expansion and contraction, and the rolling member. A telescopic rail device comprising a spring biased in a pushing-up direction. The fixed rail includes an upper flange that receives a wheel of a work vehicle, a lower flange that is fixed to the base, a vertical web that connects between the centers of both flanges, and a base portion that extends on both sides of the upper flange in an orthogonal direction. And a running surface that is formed on the upper surface of the ridge and on which the tread surface of the wheel rolls.
The upper flange of the fixed rail is formed with a missing portion having a predetermined length base portion corresponding position so that the protrusion extends to the tip side longer than the base portion on the tip side,
The movable rail includes a substantially U-shaped cross-section main body opened downward so as to straddle the fixed rail in a contracted state, and a rail provided to extend in an extending direction on an upper portion of the main body.
The rail of the movable rail includes a protruding portion extending in the extending direction and a base portion extending below the protruding portion along both sides of the protruding portion, and is fixed to the upper surface of the protruding portion in an extended state. A running surface that is continuous with the running surface of the rail is formed, and the base portion is configured to be continuous with the base portion of the fixed rail in the extended state,
The base portion of the rail body includes two fork portions that extend longer to the base end side than the projecting portion on the base end side of the movable rail,
In the extended state, the protrusion at the distal end portion of the fixed rail is configured to fit between the two fork portions at the base end portion of the movable rail, and the fork portion fits into the missing portion of the fixed rail. ,
The spring of the push-up mechanism is set to a spring force that pushes the base end of the movable rail slightly upward from the tip of the fixed rail in the extended state, and the work vehicle wheel connects the fixed rail and the movable rail. After passing the part, while the tread of the wheel rolls on the traveling surface of the fixed rail, the flange part rides on the fork part of the movable rail, and pushes down the movable rail to the same height as the fixed rail. The telescopic rail device according to claim 1, wherein the tread surface of the wheel is configured to be transferred to the traveling surface of the movable rail.

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