JP5844615B2 - Railroad car - Google Patents

Description

  The present invention relates to a track-and-rail vehicle capable of traveling on a road and traveling on a track.

A track-and-rail vehicle is known as a vehicle capable of traveling on a road and traveling on a track (for example, Patent Document 1).
See). A track-and-rail vehicle is based on a truck body that can run on roads with tire wheels, etc., and a track traveling device for traveling on the track (on the rail) and easy entry work when entering the track And a turning device to be converted. The track running device
Track-railing iron wheels (track-traveling wheels) that are used to project downward from track-railing vehicles
It is comprised. The iron wheel is rotatably supported by an iron wheel support member provided on the vehicle body,
By displacing this iron wheel support member in the vertical direction by the displacement mechanism, it can be positioned at the predetermined storage position and overhang position. The rolling device has a turntable that can be extended downward and retracted upward with respect to the vehicle body. The turntable is extended to support the vehicle body, and in this state, the iron wheel of the track traveling device is supported. It is configured so that it can be overhanged or retracted, or can be easily turned in accordance with the direction of the track or the road.

Some of these track-and-rail vehicles include a rear iron wheel swing mechanism that swings an iron wheel support member that supports left and right iron wheels (rear iron wheels) on the rear side of the vehicle body about an axis extending in the front-rear direction of the vehicle body. . In this way, the left and right iron wheels follow the height difference between the left and right on the track (rail) by moving the left and right iron wheels in the vertical direction with the swing of the iron wheel support member by the rear iron wheel swing mechanism. Therefore, the track-and-rail vehicle can travel stably on the track. The tracked vehicle mounting structure provided with the rear iron wheel swing mechanism is supported at three points: left and right iron wheels (front iron wheels) on the front side of the vehicle body and the swing pin of the rear iron wheel swing mechanism. Therefore, compared with the case where the bodywork is supported by four points consisting of front, rear, left and right steel wheels, the vehicle body is less stable in stability when the tracked vehicle is stopped on the track and the predetermined work is performed. The stable region (stable operation region) of the object becomes narrow. For example, when an aerial work apparatus is mounted as a bodywork, the work radius must be narrowed in the case of three-point support compared to the case of four-point support.

By setting the swing range of the rear wheel swing mechanism narrow, even if the center of gravity of the bodywork goes out of the stable area, the vehicle body does not fall over immediately. The working radius when mounting is not extremely narrow. However, when the center of gravity of the bodywork goes out of the stable region, an event occurs in which either the left or right of the front iron wheel is lifted off the track. This lift is canceled when the center of gravity of the bodywork returns to the stable region. However, an event that the wheel does not return to an appropriate position (for example, an event in which the flange of the iron wheel rides on the rail tread) may occur. Therefore, there is a possibility that the track-rail vehicle is likely to be derailed easily.

As a means for solving the reduction of the stable region of the bodywork and the risk of derailment, it is conceivable to provide a movable stabilization leg (hereinafter referred to as a jack) on the vehicle body. However, in order to use a jack, it is necessary to perform a jack operation on the track in order to confirm the condition of the ground plane and safety during operation. Moreover, since the form which earth | grounded the jack becomes a form exceeding the vehicle limit set in a railway business owner, in order for a track-and-rail vehicle to drive | work on a track, it is necessary to store a jack. For example, in a track-and-rail vehicle equipped with an aerial work device, an operator is usually in a cab or on a work table (work floor). Therefore, at sites where high-altitude work and track running are repeated, it is necessary for the operator to repeatedly get on and off between the track and the cab or workbench in order to perform jack operations, which may lead to a reduction in work efficiency. .

JP 2009-173060 A

Thus, there is a demand for a measure for improving the support stability of the vehicle body when stopped on the track while maintaining the travel stability during the track run.

The present invention has been made in view of such problems, and provides a track-and-rail vehicle that improves the support stability of the vehicle body when stopped on a track while maintaining the travel stability during track travel. For the purpose.

For this purpose achieved, in the present invention, the body of the drivable road traveling wheels provided with on the road provided around (e.g., a tire wheel 3 in the embodiment) and, provided on the front and rear of the vehicle body raceway travelable left and right track traveling wheels on (e.g., left and right front iron wheels 25, 35 and the rear iron wheels 75, 85 in the embodiment) and a, moving the track traveling wheels upward against the vehicle body a road running state that allows traveling on the road by the road road wheels stores Te, the track traveling wheels can travel to orbit by the track road wheels is moved overhanging downwardly relative to the vehicle body In the track-and-rail vehicle (for example, the track-and-rail work vehicle 1 in the embodiment) configured to be switchable between the track running state and at least one of the vehicle body front side and the vehicle body rear side Right pair of the track traveling wheel support member extending in the lateral direction of the vehicle body (for example, the swing axle 60 in the embodiment) is rotatably supported in the front Symbol pair of said track road wheels a storage location to store by moving upward the support and said support member against said body, provided with a displacement mechanism for displacement of the support member and projecting position projecting downwardly relative to said body, said support The displacement mechanism is configured such that when the member is displaced to the extended position by the displacement mechanism, the member can swing left and right around an axis extending in the front-rear direction of the vehicle body through an intermediate portion of the support member. A rocking lock provided on the vehicle body so as to face the support member positioned at the extended position and capable of restricting left-right rocking of the support member positioned at the extended position. hand (E.g., the swing lock cylinder 51, 52 of the left and right in the embodiment) provided with.

In the above-described invention, the rocking lock means is configured to be extendable and contractable toward the support member positioned at the extended position, and is in contact with the support member positioned at the extended position to swing the support member. It is preferable to be able to expand and contract between a rocking restriction position that regulates the movement and a rocking position that enables the rocking of the support member away from the support member located at the extended position.

In the above-described invention, the displacement mechanism is provided on the vehicle body so as to be swingable up and down around an axis extending in the left-right direction of the vehicle body, and a swing bracket that supports the support member on a swing tip side; It is preferable to have a telescopic swing cylinder that swings the swing bracket up and down to displace the support member between the retracted position and the extended position.

According to the present invention, when the swinging of the support member is restricted by the swing lock means, the bodywork is supported at four points. Therefore, while maintaining the running stability during the track running, The support stability of the vehicle body when stopped at can be improved. Further, since the rocking lock means is interposed between the vehicle body and the support member, the rocking lock means can be operated without the need to confirm the surrounding safety. Therefore, operation from the cab or work table or automation by a vehicle control system is possible, which can contribute to improvement of work efficiency.

Further, the rocking lock means is configured to be extendable between a rocking restriction position for regulating rocking of the support member and a rockable position for allowing rocking of the support member, so that the support member It is possible to easily switch between a state in which the rocking is restricted and a state in which the rocking of the support member is possible.

Further, the displacement mechanism includes a swing bracket that is swingable about an axis extending in the left-right direction of the vehicle body,
By including the swing cylinder for swinging the swing bracket, the support member can be displaced between the retracted position and the extended position with a compact structure having a small operating range.

It is the perspective view which looked at the railroad working vehicle from the upper part. It is the perspective view which looked at the railroad working vehicle from the lower part. It is the perspective view which looked at the right and left front side track running device from the lower part. It is a front view of a rear side track traveling apparatus. It is a side view of a rear side track traveling device. It is a perspective view of a rear side track traveling device. It is an exploded view of the left gauge fixed collar. (A) is sectional drawing which shows the state which slid and moved the left rear iron wheel to the right, (b) is sectional drawing which shows the state which slid the left rear iron wheel to the left.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As an example of a railroad vehicle according to the present embodiment, a railroad work vehicle 1 is shown in FIGS. 1 and 2. In the present embodiment, the vehicle width direction with the direction indicated by the arrow L in FIGS. 1 and 2 as the left side is referred to as the left-right direction, and the vehicle length direction with the direction indicated by the arrow F in FIGS. The description will be made by referring to the front-rear direction. 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 tire wheels (road driving wheels) attached at four locations on the front, rear, left and right of the vehicle body 2.
3 can drive on the road. Furthermore, a left front side track traveling device 20 and a right front side track traveling device 30 for traveling on the track are disposed at two locations on the left and right sides of the front side of the vehicle body 2, and for traveling on the track on the rear side of the vehicle body 2. A rear side track traveling device 40 is disposed.

In the center of the lower part of the vehicle body 2 is a turntable 6 for transferring the railroad work vehicle 1 onto the rail R and moving it.
Is attached. The turntable 6 can be extended downward or stored upward by a telescopic operation of a turntable extension storage cylinder (not shown), and the vehicle body 2 is rotated by a vehicle turning motor (not shown). The vehicle can turn horizontally with respect to the chassis 6. In addition, you may comprise so that the vehicle body 2 can turn horizontally with respect to the turntable 6 by manual (human power).

On the upper part of the vehicle body 2, a high-altitude work device (not shown) is mounted as a bodywork. Although a detailed illustration is omitted, the aerial work device is mounted on a swivel base (not shown) that can be swiveled horizontally with respect to the vehicle body 2, and can be raised and lowered on the swivel base so as to be nested. A boom (not shown) that can be freely extended and retracted, and a work board (not shown) for operator boarding attached to the tip of the boom. In addition, it is not limited to an aerial work device, but as a bodywork, a crane device,
You may mount the loading platform provided with the crane apparatus, the loading platform provided with the dump mechanism, etc. on the upper part of the vehicle body 2. Outrigger jacks 7 that are telescopically retractable are provided at four locations on the front, rear, left, and right of the vehicle body 2, and when performing work at a high place, the vehicle body 2 can be lifted and supported by projecting the outrigger jacks 7 downward. .

As shown in FIG. 3, the left front track running apparatus 20 includes a base bracket 21, a support plate 22 and a support shaft 23, an iron wheel holding bracket 24, a left front iron wheel 25, a swing cylinder 26, and an iron wheel drive motor 27. And a driving force transmission device 28 and a brake device 29. The base bracket 21 is disposed on the left front side in the lower part of the vehicle body 2. The pair of left and right support plates 22 are disposed below the base bracket 21 and support both ends of a support shaft 23 that is sandwiched between the left and right support plates 22 and extends in the left-right direction. Iron wheel holding bracket 24
Is supported by the left and right support plates 22 via the support shaft 23, and the vehicle body 2 is centered on the support shaft 23.
Is provided so as to be swingable up and down. The left front iron wheel (track running wheel) 25 is formed in a disk shape having a flange portion, and is held by a steel wheel holding bracket 24 so as to be rotatable about a rotation shaft (not shown) extending in the left and right directions. The swing cylinder 26 is pivotally connected to the base bracket 21 on the cylinder tube side, and is pivotally connected to the iron wheel holding bracket 24 on the rod side.
The iron wheel holding bracket 24 is swung up and down. The iron wheel drive motor 27 is composed of a hydraulic motor or the like, and rotationally drives the left front iron wheel 25. The driving force transmission device 28 is provided with the iron wheel holding bracket 2.
4 is attached to the side portion 4 to transmit the rotational driving force of the iron wheel drive motor 27 to the left front iron wheel 25.
The brake device 29 is attached to a side portion of the driving force transmission device 28 and brakes the left front iron wheel 25 via a brake disk.

The right front track running device 30 has the same configuration as the left front track running device 20, and includes a base bracket 31, a support plate 32 and a support shaft 33, an iron wheel holding bracket 34, a right front iron wheel 35, and a swing cylinder 36. And an iron wheel drive motor 37, a driving force transmission device 38, and a brake device 39. The base bracket 31 is disposed on the right front side in the lower part of the vehicle body 2.

The iron wheel holding bracket 24 for holding the left front iron wheel 25 includes a retracted position for storing the left front iron wheel 25 upward (in the vehicle body 2) by an extension operation of the swing cylinder 26, and an overhanging position for projecting the left front iron wheel 25 downward. It is provided so that it can swing up and down. Similarly, the iron wheel holding bracket 34 for holding the right front iron wheel 35 is provided with a retracted position for storing the right front iron wheel 35 upward (in the vehicle body 2) and a tension projecting the right front iron wheel 35 downward by the expansion / contraction operation of the swing cylinder 36. It is provided so as to be swingable up and down between the exit position. The track-and-work vehicle 1 moves the vehicle body 2 on the rail (track) R with the left front iron wheel 25 and the right front iron wheel 35 (and the left rear iron wheel 75 and right rear iron wheel 85 described later) projecting downward (see FIG. 5). Left and right iron wheel drive motors 27 and 37
As a result, the left front iron wheel 25 and the right front iron wheel 35 can be driven to rotate on the rail. Note that a rod-like tie rod 15 extending in the left-right direction is attached between the iron wheel holding bracket 24 of the left front track running device 20 and the iron wheel holding bracket 34 of the right front track running device 30.

As shown in FIGS. 4 to 6, the rear side track traveling device 40 includes a base bracket 41, a displacement mechanism 45 including a swing bracket 46 and a swing cylinder 50, a swing axle 60, and a left rear iron wheel 75. And a right rear iron wheel 85, a left brake device 77, and a right brake device 87. The base bracket 41 is disposed on the lower rear side of the vehicle body 2. A swing bracket 46 is swingably connected to the lower portion of the base bracket 41 via left and right hinge pins 42 and 43 extending in the left and right direction of the vehicle body 2. Accordingly, the swing bracket 46 is disposed at the lower portion of the vehicle body 2 so as to be swingable about the shaft (left and right hinge pins 42 and 43) extending in the left-right direction of the vehicle body 2. A swing axle 6 is connected to the lower end of the swing bracket 46 via a swing shaft 47.
The center part of 0 is connected, and the swing axle 60 is supported by the swing bracket 46 on the swing tip side of the swing bracket 46.

The oscillating cylinder 50 has a cylinder tube side pivoted to a cylinder bracket 44 provided at the rear portion of the base bracket 41, and a rod side pivoted to an upper end portion of the oscillating bracket 46, and can be expanded and contracted using hydraulic pressure. Configured. The swing cylinder 50 swings the swing bracket 46 about a shaft (left and right hinge pins 42, 43) extending in the left-right direction of the vehicle body 2 to support the left rear iron wheel 75 and the right rear iron wheel 85. , The storage position (see the two-dot chain line in FIG. 5) for storing the left rear iron wheel 75 and the right rear iron wheel 85 upward (in the vehicle body 2), and the tension that projects the left rear iron wheel 75 and the right rear iron wheel 85 downward. It is displaced to the exit position (see the solid line in FIG. 5).

The swing shaft 47 is disposed so as to extend in the front-rear direction of the vehicle body 2 in a state where the swing axle 60 is located at the extended position. As a result, the swing axle 60 is pivoted about the swing shaft 47 extending in the front-rear direction of the vehicle body 2 when positioned at the extended position by the displacement mechanism 45 (the swing bracket 46 and the swing cylinder 50). It is configured to be swingable in a plane perpendicular to the shaft 47.

A left swing lock cylinder 51 and a right swing lock cylinder 52 that restrict the swing of the swing axle 60 located at the overhanging position are attached to the left and right side portions of the base bracket 41.
The left rocking lock cylinder 51 is configured to be extendable in the vertical direction using hydraulic pressure. A storage detector 51 a that detects that the left swing lock cylinder 51 has been reduced to a predetermined swingable position is provided below the left swing lock cylinder 51 (on the rod side). The predetermined swingable position is set to a position at which the lower end of the left swing lock cylinder 51 is separated from the swing axle 60 located at the extended position and the swing axle 60 can swing. An overhang detector 51b that detects that the left swing lock cylinder 51 is extended and is in contact with the left shaft support portion 62 of the swing axle 60 is provided above the left swing lock cylinder 51 (on the cylinder tube side). Provided.

The right swing lock cylinder 52 has the same configuration as the left swing lock cylinder 51, and a storage detector 52a that detects that the right swing lock cylinder 52 has been reduced to a predetermined swingable position.
In addition, an overhang detector 52b is provided for detecting that the right swing lock cylinder 52 extends and contacts the right shaft support portion 67 of the swing axle 60. As described above, the left swing lock cylinder 51 and the right swing lock cylinder 52 operate the controller (not shown) based on the detection signals output from the storage detectors 51a and 52a and the overhang detectors 51b and 52b, respectively. By the control, the swinging restriction position for restricting the swinging of the swinging axle 60 by contacting the swinging axle 60 positioned at the extended position, and the swinging away from the swinging axle 60 positioned at the extended position. It is configured to be extendable and retractable from a swingable position that enables the axle 60 to swing.

The swing axle 60 includes a beam portion 61 formed at an intermediate portion of the swing axle 60, and a left shaft support portion 62 and a right shaft support portion 67 formed at both left and right ends of the beam portion 61, respectively. The left rear iron wheel 75 and the right rear iron wheel 85 are rotatably supported. Beam 6
1 is formed in a rod shape extending in the left-right direction of the vehicle body 2, and the above-described swing shaft 47 is formed at the center of the beam portion 61.
Are coupled to each other so as to be swingable about the swing shaft 47. The left shaft support part 62 is formed in a gate shape surrounding the left rear iron ring 75 and rotatably supports the left rear iron ring 75. The right shaft support portion 67 is formed in a gate shape surrounding the right rear iron wheel 85 and rotatably supports the right rear iron wheel 85.

Further, the beam portion 61 is connected to the lower ends of the left shaft support portion 62 and the right shaft support portion 67 and is located side by side with the rotation shaft portions of the left rear iron wheel 75 and the right rear iron wheel 85. The left shaft support portion 62 and the right shaft support portion 67 protrude upward from the beam portion 61. As a result, when the swing axle 60 is located at the extended position, the vehicle body 2 has a substantially M shape when viewed from the front-rear direction, and the left shaft support portion 62 and the right shaft support portion 67 are formed on the upper surface side of the beam portion 61.
An opening space S that opens upward is sandwiched between the two. A part of the swing bracket 46 enters the opening space S.

Further, a left swing prevention spring 56 is disposed in a gap between the swing bracket 46 and the left shaft support portion 62 in the opening space S, and the swing bracket 46 and the right shaft support portion 67 in the opening space S are arranged. A right swing prevention spring 57 is disposed in the gap. The left swing prevention spring 56 is
The compression coil spring is mainly used, and one end is connected to a left mounting angle 48 attached to the left side portion of the swing bracket 46 and the other end is in contact with the left side of the beam portion 61.
The right swing prevention spring 57 has the same configuration as the left swing prevention spring 56, and one end is connected to a right mounting angle 49 attached to the right side of the swing bracket 46 and the other end is a beam portion 61. It is in contact with the right side. The left and right swing prevention springs 56 and 57 can swing the swing axle 60 during orbital travel. However, when the swing axle 60 is located at the retracted position, the swing axle 60 is moved to the retracted position ( Unnecessary rocking of the rocking axle 60 when the left rear iron wheel 75 and the right rear iron wheel 85 are not on the rail (track) R, such as when displaced from the overhanging position) to the overhanging position (storage position). Are now regulated.

As shown in FIG. 7, the left rear iron wheel 75 is connected to the left iron wheel shaft 71 so as to be slidable in the extending direction. The left iron wheel shaft 71 is formed in the shape of a spline shaft extending in the left-right direction of the vehicle body 2 and is supported at both ends rotatably by the left shaft support portion 62 via bearings B1 and B2, as shown in FIG. Thereby, the left rear iron wheel 75 spline-fitted with the left iron wheel shaft 71 is rotatably supported by the left shaft support portion 62. In the gap between the left rear iron wheel 75 and the left shaft support portion 62 in the left iron wheel shaft 71, the left rear iron wheel 75 and the right rear iron wheel 8
In order to match the distance between the left rear iron wheel 75 and the width of the rail (track) R, a left gauge fixing collar 72 for fixing the position of the left rear iron wheel 75 on the left iron wheel shaft 71 is attached.

As shown in FIG. 7, the left gauge fixing collar 72 is formed in a cylindrical shape surrounding the left iron wheel shaft 71, and the first divided member 73 and the second divided member 7 are obtained by dividing the cylindrical shape into two in the circumferential direction.
It is composed of four. The first split member 73 and the second split member 74 are each formed in a semi-cylindrical shape and assembled by four screw members 79a to 79d. As shown in FIG. 8, a first inner slope that inclines conically toward the inner diameter side of the first split member 73 and the second split member 74 at one end of the first split member 73 and the second split member 74. Portions 73a and 74a are formed. At the other end of the first divided member 73 and the second divided member 74, second inner inclined portions 73b, 7 that are inclined in a conical shape toward the inner diameter side of the first divided member 73 and the second divided member 74, respectively.
4b is formed.

The left gauge fixing collar 72 includes a gap between the left rear iron wheel 75 slid to the base end side (right side) of the left iron wheel shaft 71 and the left shaft support portion 62 (see FIG. 8A), and The left rear iron wheel 75 slid to the front end side (left side) of the iron wheel shaft 71 and the left shaft support portion 6.
2 is configured to be selectively attachable to any one of the gap portions (see FIG. 8B). Thereby, the space | interval of the left rear iron wheel 75 and the right rear iron wheel 85 can be match | combined with the width | variety of two types of rails (track | truck) R of a standard gauge and a narrow gauge, for example.

As shown in FIG. 8, a cylindrical base end side contact with a left rear iron wheel 75 or a left gauge fixing collar 72 abuts on the inner side of the left shaft support portion 62 on the base end side (right side) of the left iron wheel shaft 71. A contact member 63 is provided. On the side of the base end abutting member 63, a vertical flat base end side vertical portion 63 a with which the hub of the left rear iron wheel 75 abuts, and the second of the first split member 73 and the second split member 74.
The proximal-side inclined portion 63 inclined in a conical shape toward the outer diameter side with which the inner inclined portions 73b and 74b abut.
b.

A cylindrical tip side contact member 64 with which the left rear iron wheel 75 or the left gauge fixing collar 72 contacts is provided on the inner side of the left shaft support portion 62 on the tip side (left side) of the left iron wheel shaft 71. On the side of the front end side abutting member 64, a vertical flat front end side vertical portion 64 a with which the hub of the left rear iron wheel 75 abuts, and a second inner inclined portion 73 b of the first divided member 73 and the second divided member 74. ,
A tip-side inclined portion 64b inclined in a conical shape toward the outer diameter side with which 74b abuts is formed.

The first iron wheel side vertical of the vertical flat surface in which the base end side vertical portion 63a of the base end side contact member 63 is in contact with the base end side (right side) side of the left iron wheel shaft 71 in the hub of the left rear iron ring 75. Part 75a;
A first iron ring side inclined portion 75b inclined in a conical shape toward the outer diameter side with which the first inner inclined portions 73a and 74a of the first divided member 73 and the second divided member 74 abut is formed. On the other hand, on the side of the left iron wheel shaft 71 at the tip side (left side) of the hub of the left rear iron wheel 75, the tip side contact member 6 is provided.
4 on the outer diameter side where the first inner side inclined portions 73a and 74a of the first divided member 73 and the second divided member 74 abut, and the vertical flat second iron ring side vertical portion 75c against which the front end side vertical portion 64a abuts. A second iron wheel side inclined portion 75d inclined in a conical shape is formed. The first inner inclined portions 73a and 74a and the second inner inclined portions 73b in the first divided member 73 and the second divided member 74,
74b has the same shape, but for convenience of explanation, when it comes into contact with the left rear iron wheel 75, it is referred to as first inner inclined portions 73a, 74a and comes into contact with the proximal end contact member 63 or the distal end contact member 64. The second inner inclined portions 73b and 74b will be referred to.

Similarly to the case of the left rear iron wheel 75, the right rear iron wheel 85 is connected to a right iron wheel shaft (not shown) so as to be slidable in the extending direction. The right iron wheel shaft (not shown) has the same configuration as the left iron wheel shaft 71 and is supported at both ends by the right shaft support portion 67 so as to be rotatable. Accordingly, the right rear iron wheel 85 that is spline-fitted with the right iron wheel shaft is rotatably supported by the right shaft support portion 67. In the gap between the right rear iron wheel 85 and the right shaft support portion 67 in the right iron wheel shaft, in order to adjust the distance between the left rear iron wheel 75 and the right rear iron wheel 85 to the width of the rail (track) R, A right gauge fixing collar 82 for fixing the position of the right rear iron wheel 85 is attached. The right gauge fixed collar 82 has the same configuration as the left gauge fixed collar 72.
Detailed description is omitted.

A left brake device 77 is provided on the outer side portion (left side portion) of the left shaft support portion 62. The left brake device 77 is composed of a brake disk, a brake pad, and the like connected to the tip of the left iron wheel shaft 71. By braking the brake disk using the frictional force of the brake pad, the left brake wheel 75 is braked. I do. On the other hand, a right brake device 87 is provided on the outer side portion (right side portion) of the right shaft support portion 67. The right brake device 87 is composed of a brake disk, a brake pad, and the like connected to the tip of a right iron wheel shaft (not shown).
By braking the brake disc using the frictional force of the brake pad, the right rear wheel 8
5 is braked.

In the track-and-rail work vehicle 1 configured as described above, in order to attach the left gauge fixed collar 72 to the left iron wheel shaft 71, for example, the interval between the left rear iron wheel 75 and the right rear iron wheel 85 is adjusted to the narrow gauge rail width. In this case, as shown in FIG. 8 (a), the left rear iron wheel 75 is slid to the base end side (right side) of the left iron wheel shaft 71, and the left rear iron wheel 75 and the left shaft support portion 62 (front end) on the left iron wheel shaft 71 are moved. The left gauge fixing collar 72 is attached to the gap with the side contact member 64).
In order to attach the left gauge fixing collar 72 to the left iron wheel shaft 71, the first split member 73 and the second split member 74 are joined by the four screw members 79a to 79d surrounding the left iron wheel shaft 71.

If it does so, 1st inner side inclination part 73a, 74 of the 1st division member 73 and the 2nd division member 74 will be described.
a is in contact with a second iron wheel side inclined portion 75d formed on the left side of the left rear iron wheel 75 (hub), and the second inner inclined portions 73b and 74b of the first divided member 73 and the second divided member 74 are at the tips. It abuts on the tip side inclined portion 64 b formed on the side portion of the side abutting member 64. And the fastening force by the four screw members 79a to 79d acts in the axial direction of the left iron wheel shaft 71 in each inclined portion, and the left gauge fixing collar 72 slides to the base end side (right side) of the left iron wheel shaft 71. The left rear iron wheel 75 and the left shaft support portion 62 (front end side contact member 64) are attached to the gap portion so as to expand the gap portion. At this time, the first iron wheel side vertical portion 75a formed on the right side portion of the left rear iron wheel 75 (hub) abuts on the base end side vertical portion 63a of the base end side abutting member 63, and on the left iron wheel shaft 71. The position of the left rear iron wheel 75 is fixed.

On the other hand, when the interval between the left rear iron wheel 75 and the right rear iron wheel 85 is adjusted to the rail width of the standard gauge, the left rear iron wheel 75 is connected to the front end side (left side) of the left iron wheel shaft 71 as shown in FIG. The left gauge fixing collar 72 is attached to the gap between the left rear iron wheel 75 and the left shaft support portion 62 (base end side contact member 63) of the left iron wheel shaft 71. In order to attach the left gauge fixing collar 72 to the left iron wheel shaft 71, the four screw members 7 are surrounded by surrounding the left iron wheel shaft 71.
The 1st division member 73 and the 2nd division member 74 are combined by 9a-79d.

If it does so, 1st inner side inclination part 73a, 74 of the 1st division member 73 and the 2nd division member 74 will be described.
a is in contact with the first iron wheel side inclined portion 75b formed on the right side portion of the left rear iron wheel 75 (hub), and the second inner inclined portions 73b and 74b of the first divided member 73 and the second divided member 74 are based on them. It abuts on a base end side inclined portion 63 b formed on a side portion of the end side abutting member 63. The fastening force by the four screw members 79a to 79d acts in the axial direction of the left iron wheel shaft 71 at each inclined portion, and the left gauge fixing collar 72 slides to the tip side (left side) of the left iron wheel shaft 71. The left rear iron wheel 75 and the left shaft support portion 62 (base end side contact member 63) are attached so as to push the gap portion apart. At this time, the second iron wheel side vertical portion 75c formed on the left side portion of the left rear iron wheel 75 (hub) contacts the front end side vertical portion 64a of the front end side abutting member 64, and the left rear wheel on the left iron wheel shaft 71. The position of the iron wheel 75 is fixed.

The right gauge fixing collar 82 is attached to the gap between the right rear iron wheel 85 and the right shaft support portion 67 in the right iron wheel shaft (not shown) in the same manner as the left gauge fixing collar 72. Therefore, detailed description is omitted.

In this way, the left gauge fixing collar 72 (right gauge fixing collar 82) is connected to the left rear iron wheel 75 (
Since it is attached to the gap between the right rear iron wheel 85) and the left shaft support 62 (right shaft support 67) so as to expand the gap, the left gauge fixing collar 72 (right gauge fixing collar 82).
) Functions like a wedge, the axial gap of the left iron wheel shaft 71 (right iron wheel shaft) becomes zero. Therefore, the inclination of the left rear iron wheel 75 (right rear iron wheel 85) with respect to the left iron wheel shaft 71 (right iron wheel shaft) is suppressed, the loss of the sliding function of the left rear iron wheel 75 (right rear iron wheel 85), the left rear iron wheel 75 ( Since the possibility of damage to the right rear iron wheel 85) and the left iron wheel shaft 71 (right iron wheel shaft) is further reduced, the left rear iron wheel 75 (right rear iron wheel 85) can be obtained by a simple method.
Further, it is possible to prevent the left iron wheel shaft 71 (right iron wheel shaft) from being damaged.

Further, first inner inclined portions 73 a and 74 at one end of the first divided member 73 and the second divided member 74.
a is formed, and the second inner inclined portion 73b is formed at the other end of the first divided member 73 and the second divided member 74.
, 74b are formed, the function of the wedge by the left gauge fixing collar 72 (right gauge fixing collar 82) is enhanced, so that the left rear iron wheel 75 (right rear iron wheel 85) with respect to the left iron wheel shaft 71 (right iron wheel shaft). Inclination can be more reliably suppressed, and damage to the left rear iron wheel 75 (right rear iron wheel 85) and the left iron wheel shaft 71 (right iron wheel shaft) can be more reliably prevented.

Further, the first and second iron wheel side inclined portions 75a with which the first inner inclined portions 73a and 74a of the first divided member 73 and the second divided member 74 are in contact with the side portions of the left rear iron wheel 75 (right rear iron wheel 85). , 7
5b is provided, and the second side inclined portions 73b and 74b of the first divided member 73 and the second divided member 74 are in contact with the side portion of the left shaft support portion 62 (right shaft support portion 67). Since the wedge function by the left gauge fixing collar 72 (right gauge fixing collar 82) is further increased by providing the 63b and the tip side inclined portion 64b, the left rear iron wheel 75 (right) with respect to the left iron wheel shaft 71 (right iron wheel shaft). The inclination of the rear iron wheel 85) is more reliably suppressed, and the left rear iron wheel 75 (
Damage to the right rear iron wheel 85) and the left iron wheel shaft 71 (right iron wheel shaft) can be prevented more reliably.

The left gauge fixing collar 72 (right gauge fixing collar 82) includes a left rear iron wheel 75 (right rear iron wheel 85) and a left shaft support portion 62 (slidably moved to the base end side of the left iron wheel shaft 71 (right iron wheel shaft). The left rear iron wheel 75 (right rear iron wheel 85) and the left shaft support portion 6 slidably moved to the front end side of the left iron wheel shaft 71 (right iron wheel shaft) and the gap with the right shaft support portion 67).
2 (right shaft support portion 67) is configured to be selectively attachable to either one of the gap portions. Therefore, the position of the left rear iron wheel 75 (right rear iron wheel 85) on the left iron wheel shaft 71 (right iron wheel shaft) is fixed at two locations by using only one type of left rail wheel fixing collar 72 (right rail wheel fixing collar 82). Therefore, the left rear iron wheel 75 and the right rear iron wheel 85 have a simple configuration.
Can be set to two types of intervals.

For the left front iron wheel 25 and the right front iron wheel 35, if the same member as the left gauge fixing collar 72 (the right gauge fixing collar 82) is attached to each rotation shaft (not shown), the same effect as described above can be obtained. Can do.

In addition, the track-and-rail work vehicle 1 includes a road running state in which the left and right front iron wheels 25 and 35 and the rear iron wheels 75 and 85 are stored in the vehicle body 2 so that the tire wheels 3 can travel on the road, and the left and right front iron wheels 25,
35 and rear iron wheels 75 and 85 are projected downward and can be switched to a track running state in which each iron wheel can run on a rail (track) R. To set the road running state,
The swinging cylinders 26 and 36 of the left front track running device 20 and the right front track running device 30 swing and displace the left and right iron wheel holding brackets 24 and 34 to the storage positions, and the displacement mechanism 45 of the rear track running device 40. Thus, the swing axle 60 is displaced to the retracted position, and the tire wheel 3 is grounded. On the other hand, to set the track running state, the left and right iron wheel holding brackets 2 are moved by the swing cylinders 26 and 36 of the left front track running device 20 and the right front track running device 30.
4 and 34 are oscillated and displaced to the overhanging position, and the rocking axle 60 is displaced to the overhanging position by the displacement mechanism 45 of the rear side track traveling device 40, so that the left and right front iron wheels 25 and 35 and the rear iron wheel 7 are moved.
5 and 85 are projected downward.

The turntable 6 is used when switching the traveling state, that is, switching from the road traveling state to the track traveling state or the reverse switching. For example, in the transition from the road running state to the track running state, first, the track work vehicle 1 is traveled on the road and moved to the level crossing nearest to the work site, and the track work vehicle 1 is stopped so as to cross the track. Next, a turntable extension storage cylinder (not shown) is operated to extend the turntable 6 downward, and the vehicle body 2 is lifted and supported by the turntable 6. Next, a vehicle body turning motor (not shown) is operated to rotate the turntable 6 horizontally, and the vehicle body 2 is turned about 90 degrees until the direction of the vehicle body 2 coincides with the rail direction. Next, as described above, the left and right front iron wheels 25 and 35 and the rear iron wheels 75 and 85 are projected downward and placed on the rail R while the rolling table 6 is stored upward by the rolling table extension storage cylinder. . As a result, the track-and-work vehicle 1
Is transferred from the road onto the rail R.

The track-and-work vehicle 1 transferred and moved on the rail R can run on the rail R by rotating the left and right front iron wheels 25 and 35 by the left and right iron wheel drive motors 27 and 37.
When the track-and-rail work vehicle 1 travels on the track and moves to the work site, the worker can perform work at a high place by using a high place work device (not shown). When the work is completed, the track-and-work vehicle 1 travels on the track and moves to the level crossing, and the vehicle body 2 is supported and turned by the turntable 6. At this time, the left and right front iron wheels 25 and 35 and the rear iron wheels 75 and 85 are separated upward from the rail R as described above, and the vehicle body 2
Stored in Then, after the turntable 6 is retracted and the vehicle body 2 is lowered onto the road, the tire wheel 3 is driven to travel on the road and move to another place.

When the track is running, the left and right rear iron wheels 75 and 85 move in the vertical direction along with the swing of the swing axle 60, so that the left and right rear iron wheels 75 and 85 have a difference in height between the left and right on the rail (track) R. Follow. In this way, the track-and-rail work vehicle 1 can travel stably on the rail (track) R. In the present embodiment, the swing axle 60 located at the overhanging position has a substantially M shape when viewed from the front-rear direction of the vehicle body 2. As a result, the beam portion 61 of the swing axle 60 moves the left and right rear iron wheels 75, 8.
Therefore, the height of the swing fulcrum (swing shaft 47) of the beam portion 61 is lowered to the height near the shaft portions of the left and right rear iron wheels 75 and 85. Therefore, when the left and right rear iron wheels 75 and 85 follow the difference in height between the left and right on the rail (track) R, the lateral vibration of the vehicle body 2 due to the swinging of the beam portion 61 is reduced, and the track travels. The stability of the vehicle body 2 can be improved.
Further, since the left and right shaft support portions 62 and 67 projecting upward from the beam portion 61 are formed in a gate shape, both ends of the left and right rear iron rings 75 and 85 can be supported.
The required strength of the 85 shaft portions (left and right iron wheel shafts 71 and 81) can be reduced. Further, since the substantially M-shaped swing axle 60 is formed like a tie rod on the axis between the left and right rear iron wheels 75, 85, the rigidity against the pressure in the lateral direction can be improved.

In this embodiment, since the swing shaft 47 is arranged on a straight line passing through the shaft portions of the left and right rear iron wheels 75, 85, the height of the swing support point (swing shaft 47) of the beam portion 61 is set to each height. The height is reduced to the height of the shaft portions of the rear iron wheels 75 and 85. Therefore, the left and right rear iron wheels 75 on the difference in height between the left and right on the rail (track) R,
When 85 follows, the horizontal shaking of the vehicle body 2 due to the rocking of the beam portion 61 is further reduced, and the stability of the vehicle body 2 during track traveling can be further improved.

Further, the left swing prevention spring 56 and the right swing prevention spring 57 are arranged in the opening space S formed in the substantially M-shaped swing axle 60, so that the swing axle 60 is unnecessarily swung. Can be prevented.

The displacement mechanism 45 that displaces the swing axle 60 in the vertical direction includes a swing bracket 46 that can swing around a shaft extending in the left-right direction of the vehicle body 2 and a swing cylinder 50 that swings the swing bracket 46. And is configured. Thereby, the swing axle 60 can be displaced between the retracted position and the extended position with a compact configuration with a small operating range.

Further, when working at a high place on the work site, the left swing lock cylinder 51 and the right swing lock cylinder 52 are each extended from a predetermined swingable position to a swing restriction position, and the left of the swing axle 60 is moved. Abutting on the shaft support portion 62 and the right shaft support portion 67, the swing of the swing axle 60 located at the extended position is restricted. Thus, the left and right swing lock cylinders 51
, 52 restricts the swinging of the swinging axle 60 so that the bodywork (elevation work device, etc.) is supported at four points, so that the track stability is maintained while maintaining track stability. The support stability of the vehicle body 2 when stopped above can be improved. Further, since the left rocking lock cylinder 51 and the right rocking lock cylinder 52 are interposed between the vehicle body 2 and the rocking axle 60, the left and right rocking lock cylinders 51, 52 are not required to check the surrounding safety. Can be activated. Therefore, operation from the driving cab 2a or a work table (not shown) and automation by a vehicle control system are possible, which can contribute to improvement of work efficiency.

Further, the left swing lock cylinder 51 and the right swing lock cylinder 52 are provided with a swing axle 6.
The swinging of the swinging axle 60 is restricted by being configured to be extendable and contractable between a swinging restriction position that restricts swinging of 0 and a swingable position that enables the swinging axle 60 to swing. It is possible to easily switch between the state to be performed and the state to enable the swing axle 60 to swing. When the work is completed, the left swing lock cylinder 51 and the right swing lock cylinder 52 are respectively reduced from the swing restriction position to the swingable position, and the left shaft support 62 and the right shaft of the swing axle 60 are operated. The swing axle 60 which is separated from the support portion 67 and located at the overhang position can be swung.

In the above-described embodiment, the left gauge fixed collar 72 (right gauge fixed collar 82) is configured by the first divided member 73 and the second divided member 74 that are obtained by dividing the cylindrical shape into two in the circumferential direction.
However, the present invention is not limited to this. For example, the cylindrical shape may be constituted by three divided members divided into three in the circumferential direction, and may be constituted by a plurality of divided members. Left gauge fixed collar 7
When 2 (right gage fixing collar 82) is composed of two divided members, the force for coupling the two divided members acts in one direction parallel to the coupling direction of the divided members. Therefore, the force acting on the conical inclined portion, that is, the force that pushes the gap between the left rear iron wheel 75 (right rear iron wheel 85) and the left shaft support portion 62 (right shaft support portion 67) is divided into two parts. It is the smallest at the joint part of the member, becomes large at the middle part away from the joint part, and is biased depending on the location. In contrast,
If three or more divided members are used, the force for joining the divided members is directed in a plurality of directions, so the left rear iron wheel 75 (right rear iron wheel 85) and the left shaft support portion 62 (right shaft support portion 67).
), And the force that pushes the gap between them can be made uniform.

In the above-described embodiment, the first inner inclined portions 73a and 74a are formed at one end of the first divided member 73 and the second divided member 74, and the second inner side is formed at the other end of the first divided member 73 and the second divided member 74. The inclined portions 73b and 74b are formed, but the present invention is not limited to this, and the inner inclined portion as described above is formed only at one end or the other end of the first divided member 73 and the second divided member 74. Also good.

In the above-described embodiment, the left and right rocking lock cylinders 51 and 52 are configured to restrict the rocking of the rocking axle 60 located at the extended position, but the present invention is not limited to this. For example, as a rocking lock means for restricting rocking of the rocking axle 60 located at the overhang position, the left and right rocking that can come into contact with the left shaft support part 62 and the right shaft support part 67 of the rocking axle 60, respectively. Lock member, left shaft support 62 and right shaft support 67
Rotary actuators that respectively rotate the left and right rocking lock members between a rocking restriction position that abuts on the left and right rocking positions away from the left shaft support 62 and the right shaft support 67. Also good.

In the above-described embodiment, the left swing prevention spring 56 and the right swing prevention spring 57 are arranged in the opening space S formed in the substantially M-shaped swing axle 60. However, the present invention is not limited to this. For example, a rocking prevention cylinder may be disposed, and the rocking axle 60 may be configured to prevent unnecessary rocking.

In the above-described embodiment, the displacement mechanism 45 includes the swing bracket 46 that can swing around the shaft extending in the left-right direction of the vehicle body 2 and the swing cylinder 50 that swings the swing bracket 46. However, the present invention is not limited to this. For example, the swing axle 60 may be configured to slide up and down, and the swing axle 60 can be displaced between the retracted position and the extended position. Any configuration may be used.

In the above-described embodiment, the left and right rear iron wheels 75 and 85 are supported by the swing axle 60. However, the present invention is not limited to this, and the left and right front iron wheels 25 and 35 are supported by the swing axle and the swing axle 60 is supported. The left and right front iron wheels 25 and 35 follow the height difference between the left and right on the rail (track) R by moving the left and right front iron wheels 25 and 35 in the vertical direction with the swing of the dynamic axle. May be.

DESCRIPTION OF SYMBOLS 1 Railroad work vehicle 2 Car body 3 Tire wheel 20 Left front side track traveling device 25 Left front iron wheel 30 Right front side track traveling device 35 Right front rail wheel 40 Rear side track traveling device 41 Base bracket 42 Left hinge pin 43 Right hinge pin 45 Displacement mechanism 46 Swing bracket 47 Oscillation shaft 50 Oscillation cylinder 51 Left oscillation lock cylinder 52 Right oscillation lock cylinder 56 Left oscillation prevention spring 57 Right oscillation prevention spring 60 Oscillation axle 61 Beam portion 62 Left shaft support portion 63 Base end side contact member 63a Base end side vertical portion 63b Base end side inclined portion 64 Tip end side contact member 64a Tip end side vertical portion 64b Tip end side inclined portion 67 Right shaft support portion 71 Left iron wheel shaft 72 Left gauge fixed collar 73 First divided member 73a First Inner inclined portion 73b Second inner inclined portion 74 Second divided member 74a First inner inclined portion 74b Second inner inclined portion 75 Left rear iron wheel 75a First iron wheel side vertical portion 75b First iron wheel side inclined portion 75c Second iron wheel side vertical portion 75d Second iron wheel side inclined portion 82 Right rail fixed collar 85 Right rear iron wheel R Rail S Opening space

Claims (3)

Vehicle body is provided in the front-rear with a drivable road road wheels on a road, and right and left track traveling wheels capable traveling provided in orbit around the vehicle body, the said track road wheels a road running state store is moved upward to allow traveling on the road by the road road wheels for the vehicle, the track traveling the track traveling wheels move overhanging downwardly relative to the vehicle body In a track-and-rail vehicle that can be switched to a track running state that enables traveling on a track with wheels for
The pair of left and right wheels for running on the track on the front side of the vehicle body and the rear side of the vehicle body are rotatably supported by support members extending in the left-right direction of the vehicle body,
A storage location to store by moving upward the support member supporting the front Symbol pair of said track road wheels for the vehicle body, and the swollen position protruding downward the support member relative to said vehicle body with a displacement mechanism to change position to,
When the support member is displaced to the extended position by the displacement mechanism, the support member can swing left and right around an axis extending in the front-rear direction of the vehicle body through an intermediate portion of the support member. A configuration supported by a displacement mechanism,
Provided on the vehicle body so as to face the support member located in the overhanging position, characterized in that it comprises a rocking locking means capable restricting the lateral swinging of the support member located in said protruding position Railroad car. The swing lock means is configured to be extendable and retractable toward the support member located at the extended position, and is a swing that abuts on the support member located at the extended position and regulates the swing of the support member. a regulating position, according to claim 1, characterized in that said away from the support member located in the projecting position is retractable between a pivoting position that permits the swinging of the support member Railroad car. The displacement mechanism is provided on the vehicle body so as to be swingable up and down around an axis extending in the left-right direction of the vehicle body, and a swing bracket that supports the support member on a swing tip side, and the swing bracket is moved up and down. The rail vehicle according to claim 1 or 2, further comprising an extendable swing cylinder that swings to displace the support member between the retracted position and the extended position.

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