JP6601113B2 - Railroad work vehicle - Google Patents

Description

  The present invention relates to a railroad work vehicle. More particularly, the present invention relates to a railroad work vehicle equipped with a turning device capable of stabilizing a turning operation at the time of a turn and capable of preventing an interference with a device disposed at a lower portion of the vehicle body. .

  Conventionally, a track-and-rail work vehicle that travels on both a railroad track and a motorway is used for maintenance and inspection of the railroad. This track-and-rail work vehicle is equipped with a turntable for lifting the vehicle body and changing the direction at the railroad crossing where the highway intersects the railway track.

  A turntable described in Patent Document 1 includes a turn cylinder fixed to a vehicle body, an upper plate attached to the turn cylinder, and a lower plate rotatably attached to the upper plate. It is configured to include. Since the lower plate is configured to be rotatable in the horizontal direction with respect to the upper plate, the operator of the railroad work vehicle changes the direction of the vehicle body while the lower plate is grounded to the ground and the vehicle body is lifted. be able to.

  Here, in Patent Document 1, the shape of the lower plate is a rectangle. This is to ensure stability when changing the direction of the vehicle body by increasing the length of the lower plate in one direction. In order to avoid interference with equipment such as a propeller shaft and DPF (Diesel Particulate Filter) arranged at the lower part of the vehicle body and piping to the hydraulic equipment arranged at the rear part of the vehicle body, the lower plate is arranged in the vehicle width direction. It is stored in a state that matches the direction.

  However, along with the enhancement of functionality of railroad working vehicles, there is a problem that the number of devices arranged in the lower part of the vehicle body is increased, making it difficult to avoid interference with the lower plate of the turntable. Along with this, it is conceivable to shorten the longitudinal direction of the lower plate of the turntable. In this case, however, there is a problem that the stability during rotation is lowered by shortening the length.

JP 2012-6458 A

  In view of the above circumstances, the present invention provides a turning device that can ensure turning stability when turning a railroad working vehicle and that can prevent interference with equipment disposed at the lower part of the vehicle body. The object of the present invention is to provide a track-and-rail work vehicle equipped with

In the track-and-rail work vehicle of the first invention, the traveling vehicle body is provided with tire wheels for road traveling and iron wheels for track traveling, and operates below the traveling vehicle body to be grounded. A track-and-rail work vehicle equipped with a rolling device capable of horizontally turning a traveling vehicle body in the lifted state, the rolling device being rotatable in a horizontal direction with respect to the upper support portion and the upper support portion And a lower rotating part provided with an expansion mechanism that expands in a direction away from the center of horizontal turning , the lower rotating part includes a rotation support member, It comprises a pair of ground slide members that move in a horizontal direction from the rotation support member, and the pair of ground slide members operate in directions opposite to each other across the center of the horizontal rotation. And
The track-and-rail vehicle according to a second aspect of the invention is characterized in that, in the first aspect of the invention, the rolling device is provided with a horizontal drive unit that moves the ground slide member in the horizontal direction.
In the first or second invention, the track-and-rail work vehicle according to a third aspect of the present invention includes a control device and a reduction detection member that detects that the ground slide member is in a reduced position with respect to the rotation support member. Are provided, and the control device does not operate the lower rotating portion upward when a reduction completion signal from the reduction detection member is not received.

According to the first aspect of the present invention, the rolling device installed below the traveling vehicle body of the railroad work vehicle includes the upper support member and the lower rotation provided to be rotatable in the horizontal direction with respect to the upper support member. And the lower rotating part includes an enlarging mechanism that expands in a direction away from the center of the horizontal turning, so that the lower rotating part of the rolling device is stored in the traveling vehicle body. When the lower rotating part is shortened, the horizontal length of the lower rotating part can be shortened to prevent interference with equipment arranged at the lower part of the traveling vehicle body, and when the lower rotating part is grounded, the lower rotating part is enlarged. In addition, the stability of turning during a turn can be ensured.
The lower rotating portion includes a rotation support member and a pair of ground slide members that operate in a horizontal direction from the rotation support member. It is possible to prevent interference with equipment arranged in the vehicle and to ensure the stability of turning when turning. The pair of grounding the slide member, by acting in the opposite directions to each other across the center of the horizontal pivot, with respect to the center of the horizontal turn, can be secured balance on both sides of the rolling wheel device.
According to the second aspect of the present invention, the rolling device is provided with the horizontal driving unit that moves the grounding slide unit in the horizontal direction, so that the operator of the railroad work vehicle can make a heavy grounding at the lower part of the traveling vehicle body. There is no need to perform the work of moving the slide part, and the work of the operator at the time of a turn can be reduced.
According to the third aspect of the present invention, the traveling vehicle body is provided with the control device and the reduction detection member that detects that the ground slide portion is in the reduction position with respect to the rotation support member. When the reduction completion signal from the reduction detection member has not been received, it is possible to prevent erroneous operation of the operator of the railroad work vehicle by not operating the lower rotating portion upward. That is, it is possible to prevent the lower rotating part from being raised by mistake while the ground slide part is enlarged, and to interfere with other devices.

1 is a front sectional view of a rolling device for a track work vehicle according to a first embodiment of the present invention. It is a bottom view of the rolling device of FIG. It is side surface sectional drawing of the rolling device of FIG. It is a side view of the track-and-rail work vehicle which concerns on 1st Embodiment of this invention. It is a control block diagram of the track-and-rail work vehicle which concerns on 2nd Embodiment of this invention. It is a bottom view of the rolling device of the track-and-work vehicle of FIG.

  Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 4, the side view of the track-and-rail work vehicle which concerns on embodiment of this invention is shown. The track-and-rail work vehicle includes an aerial work vehicle equipped with an aerial work machine 2 shown in FIG. 4, a truck for carrying a load carrying a small crane, a crane operator carrying a boom crane on the vehicle body, and the like. In this specification, an aerial work vehicle will be described as an example of a railroad work vehicle. In addition, in this specification, it calls as front, back, left, right, up and down on the basis of the operator who sat in the driver's seat of a track-and-work vehicle.

  In an orbital work vehicle according to an embodiment of the present invention, an aerial work machine 2 is mounted on a traveling vehicle body 11 of a vehicle 1. The aerial work machine 2 includes a swivel base 21 provided on the traveling vehicle body 11, a telescopic boom 22 attached to the swivel base 21 so as to be freely raised and lowered, and a work base 23 provided at the tip of the telescopic boom 22. It has been.

  Outriggers 13 are respectively provided at two locations on the front left and right of the traveling vehicle body 11. The outrigger 13 is composed of a jack that can be expanded and contracted downward at the left and right ends, and a support that can extend the jack in the left-right direction of the traveling vehicle body 1.

  The track-and-rail work vehicle can be used for both track-and-rail use. The vehicle body 11 has road wheels 12 (front and rear, left and right) 12 and a track traveling device 3 (front and rear, left and right 4). At a location), and road travel by the tire wheels 12 and track travel by the track travel device 3 can be selected and performed.

  The railroad work vehicle is provided with a turning device 5 for changing the direction of the vehicle 1 in a floating state. The rolling device 5 has an upper drive portion 51 and a lower rotation portion 50 in an upper storage position (the state illustrated in FIG. 4) by an elevating drive unit (hydraulic cylinder) 55 (see FIG. 3). It can be moved up and down between the lower protruding position located below the upper storage position. The rolling device 5 will be described later.

  The front and rear, left and right (total four) track running devices 3 have substantially the same structure except for the swing mechanism, and are symmetrical in the front end portion and the rear end portion of the traveling vehicle body 11, respectively. Are arranged one by one.

  Each of the track traveling devices 3 on the front side holds the front iron wheel 31 with a holding table 33, pivots the holding table 33 on a support 14 provided on the traveling vehicle body 11 with a shaft 15, and moves the holding table 33 up and down ( The hydraulic cylinder 30 can be swung up and down. The track-and-work vehicle according to the present embodiment is driven by a drive motor 34 provided on each of the left and right track traveling devices 3 of the front iron wheel 31 on the front side and the rear iron wheel 32 on the rear side. A hydraulic motor is used as the drive motor 34 for the iron wheel, and the drive motor 34 can be operated by turning on a switch for the drive motor. As another embodiment, an electric motor may be used as the iron wheel drive motor 34. Further, in this embodiment, the track traveling device 3 is provided on all four wheels, but a configuration in which the drive motor 34 is provided on either the front iron wheel 31 or the rear iron wheel 32 is also possible.

  Each of the track traveling devices 3 on the rear wheel side holds the rear iron wheel 32 with a holding table 33, pivots the holding table 33 to both ends (supports 41) of the swing frame 4 with shafts 42, and holds the holding table 33. Is vertically extended and stored by a vertical movement device (hydraulic cylinder) 30.

  Then, the front iron wheel 31 and the rear iron wheel 32 are vertically extended and stored simultaneously by the vertical movement device 30 between the lower movement use position shown in FIG. 4 and the upper movement storage position. The spacing between the left and right iron wheels 31 on the front wheel side and the left and right iron wheels 32 on the rear side is set to be the same as the applied track width (interval between the left and right rails R).

  The track-and-rail work vehicle according to the present embodiment may cause the track-and-work vehicle to run on track when the drive motor 34 of the wheels 31 and 32 is operated in a state where the four steel wheels 31 and 32 are placed on the left and right rails R. On the other hand, various work can be performed by the aerial work machine 2 while being stopped on the track by the brake device 36.

  The rolling device 5 for a railroad work vehicle according to the first embodiment of the present invention will be described in detail. FIG. 1 is a front sectional view of the rolling device 5. 1A is a view when the grounding slide member 53 is reduced toward the central axis of horizontal turning, and FIG. 1B is an enlarged view of the grounding slide member 53 in a direction away from the central axis of horizontal turning. It is. FIG. 2 is a bottom view of the rolling device according to the first embodiment, where the cross-sectional position in FIG. 1 is represented by II, and the cross-sectional position in FIG. 3 is represented by III-III. FIG. 3 is a side sectional view of the rolling device according to the first embodiment. The right side of FIG. 2 shows a case where the ground slide member 53 is enlarged, and the left side of the paper shows a case where the ground slide member 53 is reduced.

  As shown in FIG. 3, the rolling device 5 according to the present embodiment includes a lower rotating unit 50 that contacts the ground, an upper support unit 51 that holds the lower rotating unit 50 so as to be rotatable in the horizontal direction, and an upper support unit 51. It is comprised including the raising / lowering drive part 55 for moving the support part 51 up and down.

  The raising / lowering drive part 55 is comprised by two hydraulic cylinders, and these two hydraulic cylinders are installed left-right symmetrically about the centerline before and behind the traveling vehicle body 11 as an axis of symmetry. The operator of the track-and-rail work vehicle operates the lifting drive unit 55 by the driver's seat or the up / down switch provided on the traveling vehicle body 11 to move the upper support unit 51 connected to the lower end of the lifting drive unit 55. Can be operated up and down.

  The upper support portion 51 is connected to the lower end of the elevating drive unit 55 and moves up and down by the elevating operation of the elevating drive unit 55. As shown in FIGS. 1 to 3, the upper support portion 51 is a flat member whose vertical length is shorter than that of the front, rear, left and right, and a large hole is provided in the center portion. A bearing portion 54 is provided inside the hole, and the lower rotating portion 50 that is guided by the bearing portion 54 and provided below the upper support member 51 is connected to the upper support portion 51. It can be rotated horizontally.

  As shown in FIGS. 1 and 2, the lower rotating portion 50 includes a rotation support member 52 and a pair of ground slide members 53 that move in the horizontal direction with respect to the rotation support member 52. Yes. The rotation support member 52 is rotatably provided with respect to the upper support member 51 by a bearing portion 54. The rotation support member 52 has a flat shape that is short in the vertical direction like the upper support member 51. In this embodiment, as shown in FIG. 3, when viewed from below, the upper support member 51 is It has a substantially square shape. The ground slide member 53 has a rectangular flat plate shape and is provided on both the left and right sides of the rotation support member 52. In the present embodiment, the combination of the rotation support member 52 and the ground slide member 53 corresponds to the enlargement mechanism of the lower rotation unit 50.

  As shown in FIG. 3, the rotation support member 52 includes a fixed engagement portion 52a, and the ground slide member 53 includes a slide engagement portion 53a. The fixed engagement portion 52a and the slide engagement portion 53a are provided. Are engaged with each other, the ground slide member 53 can move in the horizontal direction with respect to the rotation support member 52. The fixed engagement portion 52a is an unequal side angle iron, and the end surface of the short side of the unequal angle angle steel is joined to the rotation support member 52 by welding so that the long side is horizontal. The two fixed engagement portions 52 a are joined so that the opening direction thereof faces the center of the rotation support member 52. The slide engagement portion 53a is also an unequal angle iron, and the end surface of the short side of the unequal angle iron is joined to the ground slide member 53 by welding so that the long side is horizontal. The two slide engaging portions 53 a are joined so that the opening direction thereof faces in the direction opposite to the center of the rotation support member 52.

  The ground slide member 53 is positioned at a predetermined position with respect to the rotation support member 52. In the present embodiment, the grounding slide portion 53 is positioned by fitting the positioning pin 47 fitted in the hole of the rotation support member 52 into one of the two positioning holes of the grounding slide member 53. As shown in FIG. 1 (A), when the positioning pin 47 is fitted in the extended position hole 48 of the ground slide member 53, the ground slide member 53 is in the expanded position, and is shown in FIG. 1 (B). As described above, when fitted in the reduced position hole 49 of the ground slide member 53, the ground slide member 53 is in a contracted position.

  With the above configuration, the track-and-rail work vehicle of this embodiment has the following effects. In other words, the rolling device 5 installed below the traveling vehicle body 11 of the railroad work vehicle includes an upper support member 51 and a lower rotating portion provided to be rotatable in the horizontal direction with respect to the upper support member 51. 50, and the lower rotating part 50 is provided with an enlarging mechanism that expands in a direction away from the center of the horizontal turning, so that the lower rotating part 50 of the rolling device 5 is attached to the traveling vehicle body 11. When retracted, the horizontal length of the lower rotating part 50 can be shortened to prevent interference with equipment disposed at the lower part of the traveling vehicle body 11, and when the lower rotating part 50 is grounded The lower rotating part 50 can be enlarged to ensure the stability of rotation during a turn.

  In addition, the lower rotating unit 50 includes a rotation support member 52 and a pair of ground slide members 53 that operate in the horizontal direction from the rotation support member 52, thereby having a simple configuration. It is possible to prevent interference with equipment arranged at the lower part of the traveling vehicle body 11, and to ensure turning stability during a turn. Further, the pair of ground slide members 53 operate in directions opposite to each other across the center of horizontal rotation, so that the balance of both sides of the rolling device 5 can be ensured with respect to the center of horizontal rotation.

  Next, a process in which the track-and-rail work vehicle according to the present embodiment is placed on the railway track from the expressway will be described. Here, the entire process will be described in five stages: a positioning process, a turntable rotating process, a floating process, a vehicle body turning process, and a storing process. In addition, when derailing a railroad work vehicle from a railroad track to a motorway, it carries out in the reverse order of the said process.

(Positioning process)
First, the operator of the railroad work vehicle enters the railroad work vehicle into the railroad crossing from the direction orthogonal to the rail R. Then, the operator moves the railroad working vehicle back and forth, and operates so that the rotation center of the lower rotation member 50 of the rolling device 5 is located on the center line of the two rails R. At this time, the operator operates the elevating drive unit 55 of the rolling device 5 so that the center position of the lower rotating member 50 can be easily adjusted, and lowers the lower rotating member 50 to such an extent that the lower rotating member 50 is not installed. The pair of ground slide portions 53 of the lower rotating member 50 are pulled out, and the lower rotating member 50 is expanded in one direction. At this time, the operator pulls out the positioning pin 47 from the reduced position hole 49, expands the ground slide part 53, and then inserts it into the expansion position hole 48, thereby determining the position of the ground slide part 53.

(Turn table rotation process)
Next, the operator rotates the lower rotation member 50 with respect to the upper support member 51 of the rolling device 5 without changing the slide position of the ground slide portion 53. Since the lower rotation member 50 is configured to be rotatable with respect to the upper support member 51 by the bearing portion 54, the operator can easily rotate the lower rotation member 50. The operator rotates the lower rotating member 50 by 90 degrees so that the longitudinal direction of the lower rotating member 50 becomes a direction orthogonal to the rail R. In the positioning step, the lower rotary member 50 is positioned below the traveling vehicle body 11 to some extent by the lifting drive unit 55, so that the lower rotational member 50 does not interfere with the equipment below the traveling vehicle body 11.

  Note that the longitudinal direction of the lower rotating member 50 is set to a direction orthogonal to the rail R for the following reason. That is, at a railroad crossing or the like, the gradient in the direction perpendicular to the rail R is often larger than the direction parallel to the rail R. When the longitudinal direction of the lower rotating member 50 is along this gradient, This is because stability at the time of turning increases.

(Floating process)
Next, the operator further lowers the lower rotating member 50 that has been lowered to a certain height by the elevating drive unit 55, and causes the expanded ground slide portion 53 to contact the road surface between the rails R. Further, the space between the lower rotating member 50 and the traveling vehicle body 11 is increased by the elevating drive unit 55, and the traveling vehicle body 11 is lifted to a height at which the tire wheel 12 does not touch the road.

(Car body turning process)
Next, in a state where the traveling vehicle body 11 is levitated, the operator of the railroad work vehicle pushes the traveling vehicle body 11 in the horizontal direction so that the longitudinal direction of the traveling vehicle body 11 is changed from the direction orthogonal to the rail R to the rail. Turn in a direction parallel to R.

(Storage process)
Finally, the operator lowers the traveling vehicle body 11 onto the rail R by operating the elevating drive unit 55 to narrow the distance between the lower rotating unit 50 and the traveling vehicle body 11. After the traveling vehicle body 11 is lowered onto the rail, the operator slides the ground slide member 53 to the contracted position, positions the ground slide member 53 with the positioning pin 47, and then again moves the lower rotation portion with the lift drive unit 55. 50 is raised, and the lower rotating portion 50 and the like of the rolling device 5 are moved to the upper storage position of the lower rotating portion 50 and the like.

  Next, a track work vehicle according to a second embodiment of the present invention will be described. In the first embodiment, the operator slides the ground slide member 53 manually, but automatically slides the ground slide member 53 in the second embodiment. FIG. 5 is a control block diagram of a roadway working vehicle according to the second embodiment of the present invention, and FIG. 6 is a bottom view of a rolling device of the roadway working vehicle according to the second embodiment. The right side of FIG. 6 shows the case where the ground slide member 53 is enlarged, and the left side of the paper shows the case where the ground slide member 53 is reduced.

  The track-and-rail work vehicle according to the present embodiment includes a control device 59. An input device that outputs an input signal to the control device 59 is shown on the left side of FIG. 5, and an output device that receives an output signal from the control device 59 is shown on the right side of FIG. The control device 59 is electrically connected to a reduction detection member 58 that detects that the ground slide member 53 is in a reduction position with respect to the rotation support member 52. Further, the control device 59 is rotated with respect to the horizontal support switch 60 for sliding the ground slide member 53 in the horizontal direction, the lift drive switch 61 for moving the lift drive unit 55 up and down, and the upper support unit 51. A rotation drive switch 62 for rotating the support member 52 horizontally is electrically connected.

  The reduction detection member 58 is a proximity switch, a micro switch, or the like, and switches on / off a signal to be transmitted to the control device 59 when the ground slide member 53 is located at a predetermined reduction position. The horizontal drive switch 60, the lift drive switch 61, and the rotation drive switch 62 are switches that are operated by an operator of the track work vehicle, and are provided on the driver's seat of the track work vehicle, the side surface of the traveling vehicle body 11, and the like.

  The control device 59 includes a horizontal drive unit 57 that slides the ground slide member 53 in the horizontal direction, a lift drive unit 55 that moves the upper support unit 51 and the lower rotation unit 50 up and down, and an upper support unit 51. A rotation drive unit 56 that rotates the rotation support member horizontally is electrically connected.

  In the present embodiment, in the process of the railroad work vehicle being lined from the motorway to the railroad track, the operator of the railroad work vehicle operates each switch provided in the driver's seat or the like, so that the lower rotating portion In addition to moving 50 and the like up and down, the grounding slide member 53 can be slid to the extended or reduced position, or the direction of the traveling vehicle body 11 can be changed in the vehicle body turning process. As shown in FIG. 6, the horizontal drive unit 57 is a hydraulic cylinder fixed to the rotation support member 52, and an end portion of a piston of the hydraulic cylinder is connected to the ground slide member 53.

  In the present embodiment, the control device 59 does not operate the lower rotation unit 50 upward when the reduction completion signal from the reduction detection member 58 is not received. That is, the lifting drive unit 55 is not operated.

  The rolling device 5 is provided with a horizontal drive unit 57 that moves the grounding slide unit 53 in the horizontal direction, so that an operator of the railroad work vehicle has a heavy grounding slide unit 53 below the traveling vehicle body 11. This eliminates the need to perform the work of moving the vehicle, and reduces the work of the operator when changing over.

  The traveling vehicle body 11 is provided with a control device 59 and a reduction detection member 58 that detects that the ground slide 53 is in a reduced position with respect to the rotation support member 52. When the reduction completion signal from the detection member 58 has not been received, it is possible to prevent erroneous operation of the operator of the railroad work vehicle by not operating the lower rotating unit 50 upward. That is, it is possible to prevent the lower rotating portion 50 from being raised by mistake while the ground slide portion 53 is enlarged, and interfering with other devices.

  Although the first embodiment and the second embodiment have been described as embodiments according to the present invention, the present invention is not limited to this embodiment. As for the enlargement mechanism, for example, a mechanism for enlarging in the four directions of the front, rear, left and right in the horizontal direction from the four-rotation support member 52, or the horizontal end portion of the lower rotation portion 50 is coupled by a hinge, A mechanism for rotating the member and expanding the entire lower rotating unit 50 is also included. The control that the lower rotation unit 50 is not moved upward by the reduction detection member 58 can be incorporated when the ground slide member 53 is manually operated.

DESCRIPTION OF SYMBOLS 5 Turning apparatus 11 Traveling vehicle body 12 Tire wheel 31 Front iron wheel 32 Rear iron wheel 50 Lower rotation part 51 Upper support member 52 Rotation support member 53 Ground slide member 57 Horizontal drive part 58 Reduction | decrease detection member 59 Control apparatus

Claims (3)

The traveling vehicle body is provided with tire wheels for road traveling and iron wheels for track traveling,
A railroad work vehicle provided with a rolling device capable of horizontally turning the traveling vehicle body in a state in which the traveling vehicle body is lifted by operating and grounding below the traveling vehicle body,
The rolling device includes an upper support portion, and a lower rotation portion that is rotatably provided in the horizontal direction with respect to the upper support portion.
The lower rotating part includes an enlargement mechanism that expands in a direction away from the center of the horizontal turning ,
The lower rotating portion includes a rotation support member and a pair of ground slide members that move in a horizontal direction from the rotation support member.
The pair of ground slide members operate in directions opposite to each other across the center of the horizontal rotation,
A track-and-terrain vehicle characterized by this. In the rolling device,
A horizontal drive unit is provided for operating the ground slide member in a horizontal direction;
Claim 1軌陸work vehicle, wherein a. The traveling vehicle body is provided with a control device and a reduction detection member that detects that the ground slide member is in a reduced position with respect to the rotation support member,
When the control device has not received a reduction completion signal from the reduction detection member,
Do not operate the lower rotating part upward,
The track-and-rail work vehicle according to claim 1 or 2, wherein

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