JP2008261147A - Interlocking device in telescopic rail apparatus for railroad work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interlocking device which firmly fixes a movable rail when it is set, enables an operation of extending the movable rail after short-circuiting a main rail, and prevents an operation of releasing the main rail from a short circuit state when the movable rail is in an extended state. <P>SOLUTION: To move a work vehicle to a railroad rail, the movable rail 2 is disposed movably on a fixed rail 1. A rail lock member 7 is disposed near the fixed rail 1, to which the movable rail 2 is fixed with a lock pin 17 that is prevented from being pulled out and that can be pulled out when released from a rocked state by a releasing key 16. The releasing key 16 carries out pullout prevention operation through releasing operation by the rail rock member 7. A storage box 8 stores therein the rock pin 17 pulled out of the rail rock member 7. A short-circuit unit 9 short-circuits the main rail R when a short circuit key 9a is pulled out of the short-circuit unit 9. The short circuit key 9a and the releasing key 16 are integrated together so that the rail rock member 7 and the short-circuit unit 9 cannot be operated simultaneously. An operation panel 6 includes a rock releasing circuit 10 which allows the rock pin 17 remaining in the storage box 8 to be operated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In order to move the work vehicle from the storage location of the work vehicle provided on the side of the railroad track to the railroad track, an erroneous operation of the rail device provided to extend and contract so as to intersect the railroad track in a substantially orthogonal direction The present invention relates to an interlock device for preventing the above.

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 to extend a rail to a predetermined position by pulling out a movable rail placed on a fixed rail fixed to a storage location of the work vehicle when necessary. The movable rail is coupled to the middle of a chain hung between sprockets provided at both ends of the fixed rail, and is moved on the fixed rail by being driven by a motor.
JP-A-6-193004

Since the conventional telescopic rail device for a work vehicle extends the movable rail by a relatively simple motor control operation, there is a risk that the movable rail may be inadvertently moved onto the main rail by mistake. On the other hand, in order to prevent an erroneous operation, it is conceivable that the movable rail is fixed to the fixed rail by a fixing means, and the operation panel cannot be operated unless the fixing means is released. However, in order to operate the movable rail, it is necessary to send a stop display signal to the signal light in order to prohibit entry of the railway vehicle into the main line section that extends the movable rail, and the main rail must be short-circuited. Since the release operation becomes another operation independent of the operation of the movable rail, the movable rail is moved by mistake before the main rail is short-circuited, or the movable rail is moved on the main rail and short-circuited. There is a possibility that the operation of canceling the railway vehicle is permitted, and the traveling of the railway vehicle may be permitted with the movable rail arranged on the main rail.
Therefore, according to the present invention, the movable rail is securely fixed at the time of storage, while the main rail is short-circuited, the movable rail can be extended, and the main rail short-circuit is released when the movable rail is extended. It is an object of the present invention to provide an interlock device that prevents this.

In order to solve the above-described problem, in the first invention, the movable rail 2 can be moved in the length direction on the fixed rail 1 fixed to the storage place H of the work vehicle C provided on the side of the railway track. In the telescopic rail device for moving the work vehicle C from the storage location H to the main rail R of the railway track by placing and moving the movable rail 2 by driving the motor 3 and extending the fixed rail 1 by the movable rail 2, An interlock device is provided to prevent erroneous operation. The interlock device is provided with a short circuit 9 for short-circuiting the main rail R in order to stop and display a signal light in a predetermined section of the main rail R on which the work vehicle C is placed by the telescopic rail device, and is movable to the fixed rail 1 during storage. When the unlocking operation is performed from the locked state in which the rail 2 is fixed, a rail lock member 7 is provided that disables the short circuit 9 in a state where the main rail is short-circuited, and the operation panel of the telescopic rail device in the unlocked state of the rail lock member 7 By providing the lock release circuit 10 that enables the operation of the movable rail 2 in a state where there is no stop display of the signal lamp of the main rail R.
In the second invention, the short-circuiting device 9 is provided with a detachable short-circuiting key 9a which is inserted into the short-circuiting device and operated for short-circuiting, and is removed from the short-circuiting device. A lock pin 17 that can be inserted into and removed from the fixed rail 1 and the movable rail 2, and a fixed lock 15 that holds the lock pin 17 to which the movable rail 2 is fixed and locks the lock pin 17 so as to prevent the lock pin 17 from being detached. A release key that is connected to the short-circuit key 9a, can be inserted / removed to operate the fixed lock 15 and is prevented from being removed in the unlocked state inserted into the fixed lock 15 so that the short-circuit key cannot be inserted into the short-circuit 9 16 and a storage box 8 for holding a lock pin 17 extracted from the fixed rail 1 and the movable rail 2 is provided in the vicinity of the operation panel to release the lock. The road 10, the storage box 8 holds the locking pin 17, provided with operably switches the switch 10a to the control panel of the telescoping rail unit.

  In the present invention, the movable rail can be securely fixed to the fixed rail at the time of storage, and an erroneous operation of inadvertently moving the movable rail on the main rail can be avoided. Prior to operation, it is necessary to short-circuit the main rail to prevent the main rail from entering the railcar, so it is possible to avoid moving the movable rail before the main rail is short-circuited. Since it is possible to avoid a short-circuit release operation in a state where it is moved on the rail, the railway vehicle can be operated safely, and the work vehicle can be safely moved on the main rail.

  An embodiment of the present invention will be described with reference to the drawings. 1 and 2, a fixed rail 1 is laid on the base B of the storage location of the work vehicle C in a direction substantially orthogonal to a railroad track (not shown). The movable rail 2 extends across the main rail R of the railroad track so as to be continuous with the front end side of the fixed rail 1, but can be placed on the fixed rail 1 when not in use. As shown in FIG. 4B, the movable rail 2 has a substantially U-shaped cross section and is fitted on the fixed rail 1. The movable rail 2 can be freely moved in the axial direction on the fixed rail 1 by, for example, a roller supported on the movable rail 2 rolling on the support piece 1 a of the fixed rail 1.

  A motor 3 is provided on the base end side of the fixed rail 1, a sprocket 4 a connected to the output shaft of the motor 3, sprockets 4 b, 4 c, 4 d supported on the lower portion of the fixed rail 1, and a tip of the fixed rail 1 A chain 5 is wound around a sprocket 4e provided in the section. The movable rail 2 is coupled in the middle of the chain 5 and is driven by drawing the chain 5.

  As shown in FIG. 3, the interlock device includes a rail lock member 7 provided on the side of the fixed rail 1, a lock pin storage box 8 attached to the operation panel 6 near the telescopic rail device, and a storage box. 8 and a lock release circuit 10 in the operation panel 6 electrically connected to the control panel 6.

  The short-circuit 9 is for short-circuiting the main rail R. When the short-circuit key 9a is removed from the short-circuit 9, the main rail R is short-circuited, and a signal lamp is lit to prohibit entry into the section. To stop display. Note that the short circuit 9 may be provided separately in a place away from the support panel 6 column.

  As shown in FIGS. 4 to 8, the rail lock member 7 has a holding cylinder 12 fixed to a fixing plate 11 which is fixed upright on the base B in a substantially lateral direction. The moving piece 14 is accommodated via the. A fixing lock 15 is provided on the side of the holding cylinder 12, and when the release key 16 is inserted into the key hole and rotated, the engaging piece 15a protruding from the lateral direction is retracted into the holding cylinder 12, and in this state, the release key 16 is retracted. Has a structure that can not be pulled out. The lock pin 17 is inserted into the holding cylinder 12, and when the engagement recess 17a of the lock pin 17 reaches the corresponding position of the engagement piece 15b of the fixed lock 15, the lock pin 17 is prevented from coming off. Thus, the release key 16 can be removed. The lock pin 17 is provided for each of the main rails R, R, and is fastened to a pole (not shown) by a mooring string. The release key 16 and the short-circuit key 9a are integrally connected by a link string shorter than the distance between the rail lock member 7 and the short-circuit 9. Accordingly, it is impossible to simultaneously insert the short-circuit key 9 a into the short-circuit 9 while the release key 16 is inserted into the fixed lock 15.

  An insertion hole is provided at a corresponding position of the rail lock member 7 in the contracted position where the movable rail 2 is accommodated on the fixed rail 1, and the lock pin 17 can be passed therethrough. Two lock pins 17 are accommodated in the accommodation box 8 attached to the operation panel 6 of the telescopic rail device.

  The accommodation box 8 accommodates the lock pin 17, and as shown in FIG. 10, the accommodation box 8 includes a switch 10 a that is turned on when the lock pin 17 is inserted and is inside the lock release circuit 10 provided in the operation panel 6. By closing the contacts, the operation panel 6 is electrically linked so that the movable rail 2 can be operated.

  The telescopic rail device is in a contracted state when not in use so that the rail vehicle passing on the railroad track R does not become an obstacle, and the movable rail 2 is placed on the fixed rail 1. In this state, the work vehicle C is in the storage place H on the base end side of the rail device, and is stored with the traversing wheel W1 placed on the movable rail 2. At the time of use, the vehicle C is first lifted by an attached lift device, and the movable rail 2 is left free, the chain 5 is routed by the motor 3, and the movable rail 2 is moved in the length direction on the fixed rail 1 to the main line. The rail R is extended so as to intersect. When the rail device is extended, the vehicle body of the work vehicle C is lowered, the traversing wheel W1 is lowered onto the fixed rail 1, and this is rolled on the fixed rail 1 and the movable rail 2, so that Move to the top (FIGS. 1 and 2). Here, the vehicle body is lifted again, and the chain 5 is pulled in the opposite direction to return the movable rail 2. When the vehicle body of the work vehicle C is lowered and the wheel W2 is lowered onto the main rail R, the work vehicle C can move on the main rail R to a predetermined work place. When returning the work vehicle C to the storage location, the work is performed in the opposite procedure.

  In the telescopic rail device, in a storage state where the movable rail 2 is placed on the fixed rail 1, the lock pin 17 attached to the rail lock member 7 penetrates and fixes both. In this state, the lock pin 17 is prevented from being pulled out by the engaging piece 15b of the fixed lock 15 and cannot be pulled out. Here, the main rail R is short-circuited by removing the short-circuit key 9a from the short-circuit device 9, and then the release key 16 integrated with the short-circuit key 9a is inserted into the fixed lock 15 of the rail lock member 7 and rotated to the release position. When the joining piece 15 a is retracted, the lock pin 17 is pushed out by the push spring 13. When the lock pin 17 is extracted and inserted into the storage box 8, the contact of the switch 10 a of the lock release circuit 10 of the operation panel 6 is closed, so that the movable rail 2 can be operated by the operation panel 6. Further, in a state where the lock pin 17 is inserted into the storage box 8, the engagement piece 15 a is prevented from protruding into the holding cylinder 12 by the moving piece 14 in the rail lock member 7, so that the release key inserted into the fixed lock 15. Since 16 cannot be pulled out, it is possible to avoid an erroneous operation of canceling the short circuit of the short circuit 9 by the short circuit key 9a integrated with the release key 16.

  When the work vehicle C is returned to the storage location and the movable rail 2 is overlapped on the fixed rail 1 to be in a reduced state, the operation panel 6 is closed, the lock pin 17 is pulled out from the storage box 8, and the lock pin 17 is fixed to the fixed rail. 1 and the movable rail 2 are inserted into the holding cylinder 12 of the rail lock member 7, the engagement piece 15a of the fixed lock 15 falls into the engagement recess 17a of the lock pin 17, and the release key 16 is It can be extracted by rotating. And the short circuit cancellation | release operation of the short circuit 9 can be performed by the short circuit key 9a integral with the cancellation | release key 16. FIG.

  INDUSTRIAL APPLICABILITY The present invention is effective for safely operating a telescopic rail device for moving a work vehicle from a storage location to a railroad track after operating a stop signal lamp of the main rail.

It is a schematic plan view of an expansion-contraction rail apparatus. It is a schematic front view of an expansion-contraction rail apparatus. 1 is a schematic configuration diagram of an interlock device according to the present invention. (A) is a schematic plan view of the front-end | tip part of an expansion-contraction rail apparatus, (b) is a schematic front view similarly. It is a top view of a rail lock member. It is a front view of a rail lock member. It is a side view of a rail lock member. It is a disassembled perspective view of a rail lock member. (A) is a plan view of the locked state of the rail lock member, (b) is a plan view of the unlocked state, and (c) is a plan view of the state where the lock pin is also extracted. It is a circuit diagram of a lock release circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed rail 2 Movable rail 3 Motor 5 Chain 6 Operation panel 7 Rail lock member 8 Storage box 9 Short circuit 9a Short circuit key 10 Lock release circuit 10a Switch 12 Holding cylinder 15 Fixed lock 16 Release key 17 Lock pin R Main line rail

Claims (2)

A movable rail is placed on a fixed rail fixed to the storage location of the work vehicle provided on the side of the railroad track so as to be movable in the length direction, and the movable rail is moved by a motor to move the fixed rail to the movable rail. It is an interlock device that prevents erroneous operation in the telescopic rail device that moves the work vehicle from the storage location to the main rail of the railway track by extending in
A short circuit for short-circuiting the main rail so as to close a predetermined section of the main rail and stop the signal lamp to perform the operation of moving the work vehicle to the main rail;
A rail locking member that locks the movable rail to the fixed rail at the time of storage and makes the short-circuiting device in a state in which the main rail is short-circuited by an unlocking operation,
In the unlocked state of the rail lock member, comprising a lock release circuit that enables operation of the operation panel,
An interlock device for a telescopic rail device for a railroad work vehicle, wherein operation of the movable rail is prevented in a state where there is no stop indication of a signal light on a main rail. The short-circuiting device is provided with a short-circuitable key that can be inserted and removed to perform a short-circuiting operation, and can be removed to release the short-circuiting operation.
The rail lock member includes a fixed rail and a lock pin that can be inserted into and removed from the movable rail in order to fix the movable rail during storage;
A fixed lock that holds the lock pin that fixes the movable rail to the fixed rail and locks the movable rail to prevent detachment;
Release that is integrally connected to the short-circuit key, can be inserted / removed to operate the fixed lock, is prevented from being removed in the unlocked state inserted into the fixed lock, and the short-circuit key cannot be inserted into the short-circuit device With a key,
In the vicinity of the operation panel, a storage box for holding a lock pin extracted from the fixed rail and the movable rail is provided,
2. The interface of the telescopic rail device for a railway work vehicle according to claim 1, wherein the lock release circuit includes a switch that switches the operation panel of the telescopic rail device to be operable when the storage box holds the lock pin. Locking device.

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