JP5362395B2 - Cable drum drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable drum driving device of a working vehicle capable of alignment winding of a cable to a drum, without dislocating a position of the drum. <P>SOLUTION: This cable drum driving device rotatingly drivably supports a cable drum capable of winding or delivering the cable by rotating, and has a drum placing base 31 arranged in a vehicle body and placing the cable drum, and a drum rotation gripping device composed of a plate 24 and a rotation support part 25 for rotatably gripping both end parts of the cable drum and a drum driving motor for rotatingly driving the cable drum, and is characterized in that a first projection part 31b and a second projection part 31c are arranged on an upper surface of the drum placing base 31, and the cable drum is gripped by a drum gripping device while being placed between the first and second projection parts 31b and 31c. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention is, for example, provided on the drivable vehicle body, it relates to a cable drum driving device for rotating the cable drum for performing the feeding or winding of the cable to be laid over the roads.

  Cables such as electric wires and trolley wires laid on the road or on the track are regularly replaced to cope with wear and deterioration. In that case, the cable drum around which a new cable for re-covering is wound or the cable drum (empty drum) for winding up the old cable is rotatably supported on the travelable vehicle body and the cable drum is rotated. A work vehicle having a drum driving device to be driven is used, and a cable drum is rotated by the drum driving device to perform a new cable extending operation (feeding operation) and an old cable winding operation.

  As a work vehicle used when performing the above-described work, a cable drum for winding a cable on a loading platform of a vehicle capable of traveling, and a cable to be wound are guided to the cable drum and the cable is used. 2. Description of the Related Art It is well known that a traverser that guides a cable while moving in the rotation axis direction (left and right direction) of the cable drum so as to be wound evenly in the width direction of the cable drum. Furthermore, a work vehicle equipped with a drum gripping device constituted by a drum pressing mechanism that rotatably grips the cable drum by being pressed from both ends of the cable drum, a drum driving motor that imparts a rotational driving force to the cable drum, and the like. (See, for example, Patent Document 1), and in such a working vehicle, the cable drum is rotated by a drum drive motor in a state where both ends of the cable drum are pressed by the drum pressing mechanism. Rotational torque is applied to the outer peripheral portions of both ends of the. This makes it possible to apply a large rotational torque to the cable drum, and to wind up a heavy cable.

JP 2006-188330 A

  By the way, in the cable drum driving device of the work vehicle as described above, the cable drum is moved after being placed on the drum mounting table, and after being moved, the cable drum is gripped by the drum gripping device from both sides. To align and wind the cable around the drum, the cable drum is positioned in the center with respect to the left and right direction of the drum gripping device and the drum mounting table, the reversal point of the reciprocating movement of the traverser in the left and right direction, It is necessary to align the direction.

  However, the work of positioning the above-described cable drum in the center has been performed by the operator's eye measurement. Even if the cable drum is positioned at the center, if a malfunction such as a malfunction of the drum gripping device occurs, the cable drum may be pushed out in either the right or left direction and may be displaced from the center position. If the cable is wound around the cable drum with the cable drum shifted from the center position, the cable drum is shifted to the right or left with respect to the moving area of the traverser's reciprocating movement in the left-right direction. Since the reversal point of the movement and the position of the end of the cable drum are also shifted, the cable winding position of the cable drum is biased, and the cable cannot be wound on the cable drum. For this reason, the winding capacity of the cable per one cable drum is reduced, and there is also a problem that the load on the left side and the load on the right side of the drum driving device are not equal.

The present invention has been made in view of the above problems, without the position of the drum is displaced, and an object thereof is to provide a regular winding can and Do Luque Burudoramu drive cable to the drum .

In order to achieve the above object, a cable drum driving device according to the present invention is configured to have a pair of disc-shaped flanges at both ends of a cylindrical winding drum, and the winding drum between the pair of flanges. A cable drum that winds or unwinds the cable is supported so as to be rotatable about the central axis of the winding drum. The cable drum driving device is formed in a rectangular frame shape and has a space shorter than the diameter of the flange portion, and the winding drum extends left and right on the front and rear frame portions opposed to the front and rear. outer peripheral edge portions of the pair of flange portions by placing as enters into the gap having a mounting portion for supporting location mounting the cable drum, the rotational axis of the cable drum to the left and right of the mounting table It includes a first projecting portion of the left and right projecting upward at a slightly longer distance than the length of the back and forth the pair of flange portions to be positioned sandwiched between the first projecting portion of the right and left A drum mounting table configured to be mounted on the frame portion and to hold the cable drum on the mounting portion, and to rotate the cable drum while supporting the pair of flange portions from both left and right sides. Drum gripping device to grip possible and front Includes a drum driving motor for rotating the cable drum which is gripped by the drum gripping device, and a relative movement mechanism capable of relatively moving said drum gripping device up and down relative to the drum mounting table, said cable drum The first and second cable drums having at least different lengths of the winding drum are used, and the length of the winding drum of the first cable drum is longer than the length of the winding drum of the second cable drum. The first projecting portion is long and is configured to place and hold the first cable drum on the mounting portion with the pair of flange portions of the first cable drum sandwiched from the left and right sides. The second cable is positioned on the left and right inner sides of the pair of first projecting portions on the front and rear frame portions constituting the mounting portion, and sandwiches the pair of flange portions of the second cable drum from the left and right. Dora The and second projecting portions for mounting the holding is provided on the mounting section, the projecting height of the first projection may be higher than the projecting height of the second projecting portion.

In the cable drum driving device configured as described above, preferably, the relative movement mechanism is a mounting table lifting device that moves the drum mounting table in a vertical direction relative to the drum gripping device.

Above, the engagement Luque Burudoramu driving device according to the present invention, portions out pair of collision to the drum mounting table for mounting a cable drum is provided, as the flange portion is sandwiched between these collision detection section By placing the cable drum, it is possible to regulate the position of the cable drum in the left-right direction. Since the cable drum is gripped from the left and right by the drum gripping device in a state where the position of the cable drum is regulated in this way, the drum mounting table is moved away from the cable drum by a relative movement mechanism thereafter. However, since it is possible to prevent the cable drum from being displaced in the left-right direction, it is possible to avoid problems such as the cable being unable to be aligned and wound due to the displacement.

Further, when the projecting portion is composed of a plurality of left and right pair of projecting portions, and a plurality of cable drums of different sizes are used, the plurality of left and right pair of projecting portions are respectively connected to the plurality of size cable drums. By making it correspond to the size, any of the plurality of size cable drums can be mounted and held on the mounting table without any left-right positional deviation.

It is a figure which shows the structure of the track-and-rail work vehicle to which the cable drum drive device concerning this invention is applied, (a) is a side view, (b) has shown the top view. It is a block diagram which shows the structure in the various operating devices in the said track-and-terrain work vehicle, (a) is a block diagram of a drum operating device, (b) is a block diagram of a traveling operating device. It is a schematic block diagram which shows the structure in the periphery of the drum mounting base and drum holding | grip apparatus in the said track-and-rail work vehicle. It is a figure which shows a structure when a large drum and a small drum are mounted on a drum mounting base, or when a large drum and a small drum are gripped by a drum gripping device, (a) is a top view of the drum mounting base; b) A diagram showing the positional relationship between the drum and the drum mounting table when the large drum and the small drum are mounted on the drum mounting table, and (c) when the large drum and the small drum are mounted on the drum mounting table. It is the figure which looked at the mode from the left-right direction (the width direction of a drum). It is a figure explaining the winding operation | work of the trolley line in the said track-and-rail work vehicle.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present embodiment, an example of a work vehicle including a drum driving device that rotatably supports a drum around which a cable for replacement is wound or a drum for winding a cable (empty drum) is rotatably supported. The road-rail work vehicle 1 that can travel on roads and tracks will be described. The configuration of the roadway working vehicle 1 is shown in FIG. 1, and the schematic configuration of the roadway working vehicle 1 will be described with reference to this drawing.

  The track-and-rail work vehicle 1 is configured on the basis of a truck vehicle having a driving cab 2a provided on a vehicle body 2 and travels on a road by road traveling wheels 3 attached to four locations on the front, rear, left and right of the vehicle body 2. be able to. Furthermore, at four locations on the front, rear, left, and right of the vehicle body 2 (the rear side of the road vehicle wheel 3), an orbital vehicle wheel 4 (hereinafter referred to as an iron wheel 4) is supported by the vehicle body 2 so as to be swingable. The member 4a is rotatably attached. In the following description, as shown by the arrows in FIGS. 1A and 1B, the direction in which the vehicle body 2 moves forward is the forward direction, and the right direction as viewed from the driver who has boarded the driving cab 2a. Are defined as the right direction, the upper direction when viewed from the driver is the upward direction, and so on.

  The iron ring support member 4a is oscillated by expansion and contraction of the iron ring overhanging storage cylinder 5, and the iron ring 4 is extended downward or stored upward by oscillating the iron ring support member 4a. It can be done. The track-and-rail work vehicle 1 places the vehicle body 2 on the track with the steel wheel 4 overhanging, and drives the steel wheel 4 by the iron wheel drive hydraulic motors 8 and 8 respectively connected to the two steel wheels 4 on the front side. Can be self-propelled.

  A turntable 6 is provided at the center lower part of the vehicle body 2 for moving the track work vehicle 1 on the track. The turntable 6 can be extended downward or stowed upward by the expansion / contraction operation of the turntable extension storage cylinder 7, and the vehicle body 2 is lifted downward and the vehicle body 2 is lifted up by the operator's human power. 2 can be turned horizontally with respect to the turntable 6.

  On the vehicle body 2, an aerial work device 10, a drum drive device 20, a central cab 50, and the like are provided. The aerial work apparatus 10 includes a lifting post 11 that is vertically installed on the rear side of the driving cab 2a and that can be telescopically extended, and a workbench 12 that is attached to the upper part of the lifting post 11 so that an operator can board the work. The lifting / lowering post 11 is lifted / lowered by an expansion / contraction operation of a lifting / lowering cylinder (not shown) built in the lifting / lowering post 11, and the lifting / lowering post 11 is lifted / lowered to attach a work table attached to the lifting / lowering post 11. 12 can be moved up and down in the vertical direction. The work table 12 is provided with an elevating operation device 13 and a guide roller 14 used when winding a cable by a drum driving device 20 described in detail later. An operator who has boarded the work table 12 can move the work table 12 up and down by operating the lifting operation device 13. The guide roller 14 is rotatably attached to a roller support member 14a that can swing with respect to the work table 12. The guide roller 14 can be swung downward and stored in the work table 12 when not in use. FIG. 1 shows a state in use in which the guide roller 14 is swung upward.

  The central cab 50 is a box-shaped operation room provided between the high place working device 10 and the drum driving device 20 and on which an operator can ride, and an operator seat (not shown) for the operator to sit inside. 2), a traveling operation device 54 (see FIG. 2) for performing a traveling operation on the railroad rail of the track-and-work vehicle 1, and a drum operating device 51 (see FIG. 2) for operating the drum driving device 20. ) And a work operation device (not shown) for operating each device disposed on the vehicle body 2 such as the aerial work device 10. The central cab 50 is provided so as to be able to turn 180 degrees horizontally on the vehicle body 2 (turnable between arrows FR shown in FIG. 1 (b)). By rotating the central cab 50 by a motor (not shown), various operation inputs can be performed with the vehicle body 2 facing front, side, or rear.

  In the track-and-rail work vehicle 1 having such a configuration, the vehicle body 2 is placed on the railroad rail with the iron wheel 4 protruding downward using the turntable 6. Further, on the railroad rail, the railcar 1 is supported by the drum driving device 20 as shown in FIG. 2 in order to perform the traveling operation of the vehicle body 2 and the rotational driving of the drum by the drum driving device 20 described later. A drum operating device 51 for rotating and driving a drum (described in detail later), an operation lever (not shown) capable of adjusting the traveling speed of the vehicle body 2 by tilting, and the vehicle body 2 can be stopped suddenly. A travel operation device 54 configured by an emergency stop switch (not shown) and the like, and a travel control device 60 provided on the vehicle body 2 and including a hydraulic pump P2 and a control valve 62 described later are provided. The drum operation device 51, the travel operation device 54, and the travel control device 60 will be described with reference to FIGS. 2 (a) and 2 (b). 2A is a block diagram showing the configuration of the drum operation device 51 and a drum drive motor 21 and a drum D, which will be described later, and FIG. 2B is a block diagram showing the configuration of the travel operation device 54 and the travel control device 60. .

  The drum operation device 51 is provided inside the central cab 50, and an operator gets on the central cab 50 and operates the drum operation device 51, whereby the drum supported by the drum driving device 20, which will be described later, is attached to the vehicle body 2. It can be driven to rotate in the front-rear direction (clockwise or counterclockwise on the paper surface in FIG. 1A). Specifically, as shown in the block diagram of FIG. 2A, when an operator operates the drum operation device 51, a corresponding drum operation signal is output, and the drum operation signal is input to the drum control device 52. The Then, an operation control signal corresponding to the operation of the drum operation device 51 is input from the drum control device 52 to the control valve 53, and the control valve 53 controls the supply direction of the hydraulic oil supplied from the hydraulic pump P2 to operate the drum. It is possible to control the rotation direction of a drum drive motor 21 to be described later according to the operation of the device 51.

  The travel operation device 54 is provided inside the central cab 50, and includes an operation lever (not shown), an emergency stop switch (not shown), etc., and a travel operation signal is output by tilting the operation lever. The traveling speed of the vehicle body 2 can be adjusted. Further, when an emergency stop switch is pressed, an emergency stop signal is output, and the traveling of the vehicle body 2 can be suddenly stopped in an emergency or the like.

  The travel control device 60 is provided in the vehicle body 2 and, as shown in FIG. 2B, a controller 61 that receives a travel operation signal (command value) from the travel operation device 54 and an operation that is supplied to the iron wheel drive hydraulic motor 8. A control valve 62 for controlling the hydraulic pressure and a brake device 63 for applying a braking force to the iron wheel 4 are configured. The controller 61 controls the control valve 62 and the control valve 62 based on an operation signal from the travel operation device 54, specifically, a travel operation signal from an operation lever (not shown) or an emergency stop signal from an emergency stop switch (not shown). An operation control signal is output to each brake device 63. The control valve 62 is a control valve that controls the supply of hydraulic oil from the hydraulic pump P1 to the iron wheel drive hydraulic motor 8, and controls the supply of hydraulic oil based on the operation control signal sent from the controller 61. It is possible to adjust the number of rotations. The hydraulic pump P1 is driven by an engine (not shown) provided in the vehicle body 2 and the supply amount of hydraulic oil is controlled by the control valve 62, and then the hydraulic oil is supplied to the iron wheel drive hydraulic motor 8. The

  The drum driving device 20 is a device that is provided behind the central cab 50 and rotatably supports a drum D around which a cable can be wound. Further, the drum driving device 20 rotates and drives the drum D to rotate and wind the cable. is there. First, as shown in FIG. 1B, the drum D targeted in the present embodiment is formed in a columnar shape so that the bottom surface thereof faces in the left-right direction, and the cable is wound around the outer periphery of the side surface. A possible winding drum Da, and a flange Db that is configured in a disc shape and that covers the bottom surface of the winding drum Da from the left and right direction and prevents the cable wound around the winding drum Da from coming off the winding drum Da. It is comprised by. In addition, a hole (not shown) for fitting a rotation support portion 25 of a drum gripping device 22 described later is provided in the center portion of the flange portion Db, and the drum D rotates around the hole portion. It can be done (detailed later). As shown in FIG. 1, one drum drive device 20 is provided on each of the left and right sides of the drum D, and the drum D is rotated in the front-rear direction of the vehicle body 2 (clockwise or counterclockwise on the paper surface of FIG. 1A). A drum drive motor 21 to be driven, a drum gripping device 22 (see FIG. 1B) for gripping the drum D in a rotatable manner by gripping the flanges Db provided at both ends of the drum D from the left and right directions; And a drum mounting member 30 (see FIG. 3) for mounting and holding D.

  As described above, the drum drive motor 21 is rotationally driven by the hydraulic pressure supplied from the hydraulic pump P2 via the control valve 53. This rotational drive is controlled by the operator operating the drum operating device 51. As shown in FIGS. 1 and 3, the drum gripping device 22 is configured to be able to extend and contract to grip the drum D from the left and right directions, and includes two gripping cylinders 23 provided in a pair of left and right, and a drum drive motor 21. And two plates 24 provided between the drum D and a drum rotation support portion 25 (see FIG. 3) for rotatably supporting the drum D. The gripping cylinder 23 is provided so as to be extendable in the left-right direction. The drum rotation support portion 25 is fitted into a hole (not shown) provided in the center of the flange portion Db of the drum D, and the drum 24 is formed by two plates 24. The drum D can be gripped by sandwiching the flange portion Db of D from the left-right direction. The plate 24 and the drum rotation support portion 25 rotate with the rotation driving force supplied from the drum drive motor 21, and the drum rotation support portion 25 is fitted into the hole of the drum D so that the plate 24 is fitted to the flange portion Db. , The rotational driving force of the drum drive motor 21 is transmitted to the drum D, and the drum D can be driven to rotate about the rotation axis A shown in FIG.

  As shown in FIG. 3, the drum mounting member 30 includes a drum mounting base 31 for mounting and holding the drum D, and a drum lifting cylinder 32 configured to be vertically extendable and capable of moving up and down the drum mounting base 31. And is configured. The drum mounting table 31 is supported by a guide means 33 fixed to the vehicle body 2 so as to be movable in the vertical direction. The drum elevating cylinder 32 can be operated by operating a drum elevating operation device (not shown) provided in the central cab 50, and the drum elevating cylinder 32 extends as shown in FIG. When the drum mounting table 31 moves upward along the guide means 33 and contracts, the drum mounting table 31 moves downward along the guide means 33. As described above, the drum mounting table 31 can be moved up and down in a state where the drum D is mounted by the expansion and contraction operation of the drum lifting cylinder 32. The drum mounting table 31 has a rectangular frame-like base member 31a when viewed from above, two first step portions 31b provided in the front-rear direction at the left and right ends of the base member 31a, and two first step portions 31b. Four second portions respectively provided inside the one step portion 31b (positions close to the right side of the first step portion 31b on the left side and positions close to the left side of the first step portion 31b on the right side) and in the front-rear direction thereof. The upper surface of the second step portion 31c is higher than the upper surface of the base member 31a, and the upper surface of the first step portion 31b is higher than the upper surface of the second step portion 31c.

  With the configuration as described above, as shown in FIGS. 4A and 4B, a large drum having a length W1 parallel to the rotation axis and a small drum having the length W2 are respectively drummed. It can be placed and held on the placing table 31 (hereinafter referred to as a large drum D1 and a small drum D2). As shown in FIGS. 4A and 4B, the length W1 is the first provided at the right end of the first step portion 31b provided at the left end of the base member 31a and the right end of the base member 31a. The distance W2 is slightly shorter than the distance from the left end of the stepped portion 31b, and the length W2 is between the right end of the second stepped portion 31c provided on the left side and the left end of the second stepped portion 31c provided on the right side. It is slightly shorter than the distance.

  Here, when the large drum D1 is mounted on the drum mounting table 31, both left and right lower ends of the large drum D1 are close to the side surface of the first step portion 31b as shown in FIG. Both ends are in contact with the second step portion 31c (see FIG. 4C). When the small drum D2 is mounted, both the left and right lower ends of the small drum D2 are close to the side surface of the second step portion 31c, and both the front and rear lower ends are in contact with the base member 31a (see FIG. 4 (c)).

  A traverser 40 is provided on the upper front side of the drum driving device 20. The traverser 40 is a guide device used at the time of winding the cable. As shown in FIG. 1, the traverser 40 moves in the axial direction to the traverse shaft 40a extending in the left-right direction above the front side of the drum drive device 20 and the traverse shaft 40a. A guide base 40b that is freely attached and a pair of upper and lower guide rollers (not shown) rotatably provided in the guide base 40b, and a traverser drive motor (not shown) through a cable between the guide rollers. ), The guide base 40b reciprocates in the left-right direction along the traverse shaft 40a.

  By reciprocating the guide base 40b as described above, the cable winding position on the drum can be adjusted, but the center of the reciprocating movement of the guide base 40b of the traverser 40 in the left-right direction is the center. The position coincides with the center position in the left-right direction of the drum mounting table 31. The central cab 50 is provided with a traverser operation switch (not shown). By operating the traverser operation switch, the amplitude of the reciprocating movement of the guide base 40b is set to the size of the drum (large drum D1 or small drum D2). ) Can be switched to match. In this way, the turn-back point of the reciprocating movement of the guide base 40b can be adjusted so that the left and right directions are the same as both ends of the drum gripped by the drum gripping device 22.

  As an example of applying the drum drive device 20 to the track-and-rail work vehicle 1 having the above-described configuration, first, a method of installing the drum D around which the new trolley wire T2 for laying on the track is installed in the drum drive device 20 is described. explain. First, the drum D is mounted on the drum mounting table 31 shown in FIG. 3. When the large drum D1 is mounted, the lower left and right ends of the large drum D1 are close to the side surface of the first step portion 31b. When placing the small drum D2 so that the lower ends of both ends are in contact with the second stepped portion 31c, the lower left and right ends are close to the side surface of the second stepped portion 31c, and the lower ends of the front and rear ends are on the base member 31a. Place it in contact (see FIG. 4).

  After the drum D is mounted on the drum mounting table 31, the drum lifting cylinder 32 is operated, and the position of a hole (not shown) provided in the center of the flange Db of the drum D is set to the drum rotation support portion 25. The drum mounting table 31 is moved upward until it becomes equal to the height of. Then, the drum rotation support portion 25 is fitted into the hole portion of the drum D by the gripping cylinder 23 and the flanges Db at both the left and right ends of the drum D are pressed by the plates 24, whereby the drum D is held by the drum gripping device 22. . After the drum D is gripped, the drum mounting table 31 is moved downward by the drum lifting cylinder 32 to be separated from the drum D. In this way, the drum D is placed between the first stepped portion 31b or the second stepped portion 31c provided on the left and right pair of the drum placing table 31, and after the position of the drum D in the left-right direction is regulated, the drum gripping device 22 By gripping the drum from the left and right direction, when the drum D is gripped by the drum gripping device 22, it is possible to prevent the position of the drum D from shifting in the left and right direction due to a malfunction of the gripping cylinder 23 or the like.

  After installing the drum D in the drum drive device 20, the operator travels the track-and-rail work vehicle 1 with the driving cab 2a and moves to the work destination. Then, after arriving at the work destination, the drum operating device 51 is operated to sequentially feed out the new trolley wire T2 from the drum driving device 20, and as shown in FIG. 5, the old trolley wire T1 already stretched. An S-shaped hook 103 is hung on the new trolley line T2 below the old trolley line T1 through the S-shaped hook 103. Thereafter, the old trolley wire T1 is removed from the hanger 102 described later, the new trolley wire T2 is attached to the hanger 102, and the removed old trolley wire T1 is hooked on the S-shaped hook 103. The hanger 102 is a member that suspends and supports a trolley wire on a suspending wire 101 that is a cable that stretches the trolley wire on the rail R. Thus, after attaching the new trolley wire T2 to the hanger 102, as shown in FIG. 5, the drum operating device 51 is operated to cause the drum driving device 20 to rotate and drive the empty drum D. The line T1 is wound up sequentially. Thereafter, the operator in the workbench 12 collects the S-shaped hook 103, and the trolley wire replacement work is completed.

  Here, at the time of winding the old trolley wire T1 as described above, as shown in FIG. 5, the old trolley wire T1 is hung on the guide roller 14 and wound around the drum D through the traverser 40. The drum D is placed between the first or second stepped portions 31b and 31c of the drum mounting table 31 and is gripped by the drum gripping device 22 in a state in which the position in the left-right direction is restricted, whereby the guide table 40b ( The center position of the reciprocating movement in FIG. 1 and the center position of the drum D in the left-right direction can coincide with each other. Accordingly, since the cable can be wound around the drum D, the winding of the cable around the drum D cannot be performed, and the winding capacity is reduced, or the load on the left side and the load on the right side of the drum drive motor 21 are equal. It is possible to avoid problems such as disappearing.

  As described above, in the present embodiment, the drum stage 31 is provided with the first step part 31b and the second step part 31c, so that the drum D is placed at the center of the drum stage 31 and the drum gripping device 22 in the left-right direction. Since it can be positioned, it is possible to prevent the problem that the cable cannot be wound around the drum D. In addition, when the large drum D1 and the small drum D2 are used, the above problem can be avoided similarly.

  In the present embodiment, as described above, the example in which the positions of the large drum D1 and the small drum D2 are restricted to the center position in the left-right direction by the first and second stepped portions 31b and 31c has been described. Instead of this, a protrusion or the like may be provided on the upper surface of the drum mounting table 31 to restrict the movement of the drum.

  Moreover, in this embodiment, although the example which raises / lowers the drum mounting base 31 using the drum raising / lowering cylinder 32 comprised so that expansion-contraction in the up-down direction was demonstrated, it is not necessarily limited to this about the apparatus which raises / lowers the drum mounting base 31. However, other lifting devices that are not cylinder type may be used. Further, the device for gripping the drum is not limited to the gripping cylinder 23. For example, the drum gripping device itself may be slid in the left-right direction without using the gripping cylinder 23 to grip the drum. Good.

  In the present embodiment, the example in which the drum placed and held on the drum placing table 31 is moved to coincide with the position of the drum rotation support portion 25 of the drum driving device 20 has been described. The alignment method is not limited to this, and after the drum is mounted on the drum mounting table, the drum rotation support portion (drum gripping device) of the drum driving device may be moved to the drum position.

  Furthermore, in this embodiment, although the example which applied the drum drive device which concerns on this invention to the track-and-rail work vehicle 1 of the type provided with the two drum drive motors 21 was demonstrated, the vehicle of application object is limited to this. Never happen. The present invention is applicable not only to other types of track-and-rail work vehicles but also to vehicles other than track-and-rail work vehicles.

D Drum D1 Large Drum D2 Small Drum 1 Railroad Work Vehicle 20 Drum Drive Device (Cable Drum Drive Device)
21 Drum drive motor 22 Drum gripping device 31 Drum mounting table 31b First step portion (high protruding portion)
31c 2nd step part (low protrusion part)
32 Drum elevating cylinder (mounting table elevating device)

Claims (2)

A cable drum configured to have a pair of disc-shaped flanges at both ends of a cylindrical winding drum, and winds or feeds a cable to and from the winding drum between the pair of flanges. A cable drum driving device that supports a rotational drive about a central axis,
On the front and rear frame portions that are formed in a rectangular frame shape and have a shorter interval than the diameter of the flange portion, and the front and rear frame portions are opposed to each other , the winding drum extends left and right, and the outer peripheral ends of the pair of flange portions are the has a mounting part for mounting the cable drum location support, wherein the rotation axis direction of the cable drum at a slightly longer distance than the length in the left and right of the mounting table by placing as enters into the gap A pair of left and right first projecting portions projecting upward; and the pair of flanges are placed on the front and rear frame portions so as to be sandwiched between the pair of left and right first projecting portions. A drum mounting table configured to mount and hold the cable drum on the mounting unit;
A drum gripping device that rotatably supports the pair of flanges from the left and right sides, and grips the cable drum;
A drum drive motor that rotationally drives the cable drum gripped by the drum gripping device;
Bei example and a relative movement mechanism capable of relatively moving said drum gripping device up and down relative to the drum mounting table,
As the cable drum, at least first and second cable drums having different lengths of the winding drum are used, and the length of the winding drum of the first cable drum is that of the winding drum of the second cable drum. Longer than the length,
The first projecting portion is configured to place and hold the first cable drum on the placement portion, sandwiching a pair of flange portions of the first cable drum from the left and right,
On the front and rear frame portions constituting the mounting portion, the second protrusion is located on the inner side in the left-right direction of the pair of first projecting portions, and sandwiches the pair of flange portions of the second cable drum from the left and right. A second projecting portion for placing and holding the cable drum on the placing portion is provided,
The cable drum driving device according to claim 1, wherein a protrusion height of the first protrusion is higher than a protrusion height of the second protrusion .   The cable drum driving device according to claim 1, wherein the relative movement mechanism is a mounting table lifting device that moves the drum mounting table in a vertical direction relative to the drum gripping device.

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