JP2002327414A - Attachment for traveling on track and service car provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a finely adjustable track-traveling attachment for a snow remover capable of removing snow on a road and a track by one machine and capable of removing snow on the track. SOLUTION: The front-section attachment 20 is installed to the front section of the car body of the snow remover 1, and the rear-section attachment 30 is secured to the rear section of the car body of the snow remover 1. Guide wheels 21 and 31 for the front-section and rear-section attachments 20 and 30 are constituted movably at the places of lifting shown in solid lines in Fig. and the places of lowering shown in virtual lines. The guide wheels 21 and 31 are held at the places of lifting and made to travel on the road, and the guide wheels 21 and 31 are held at the places of lowering and fitted on rails and made to travel on the track.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment mounted on a work vehicle and traveling on a track (rail), and a work vehicle equipped with the attachment.

[0002]

2. Description of the Related Art A work vehicle equipped with a work device is well known. For example, a typical rotary snowplow has a snowplow in front of the vehicle. Rotary snow removal equipment consists of an auger, blower and chute. During snow removal work, the snowplow advances while rotating the auger. Snow is thrown to the side of the road via a chute.

[0003] In addition, track snow plows that perform snow removal work by running on railway tracks are also well known. This track snowplow also has a snowplow removed from a work vehicle that can run on a track.

[0004]

However, conventionally,
Work vehicles for general roads could not travel on railway tracks. Taking a snowplow as an example, a snowplow for a general road cannot run on a railway track, and snow removal on the track is performed by a dedicated track snowplow. Conversely, the track snowplow could not travel on a normal road. In other words, it is not possible to remove snow on both the road and the track with one snowplow, and it is necessary for railway companies and others to deploy snowplows, increasing vehicle costs and requiring a large space for storage. There was a problem.

[0005] Furthermore, since the track snowplow travels on the rails, it may hinder the operation of ordinary trains and trains. In the conventional track snowplow, the turn around during the operation time of ordinary trains and trains may occur. There was a problem that it was difficult to remove snow on the tracks.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in a conventional work vehicle, and can perform work on a road and a track by a single vehicle, thereby enabling work on a track with a small turn. It is an object to provide a traveling attachment and a work vehicle equipped with the traveling attachment.

[0007]

According to the present invention, there is provided an attachment which is detachably provided on a work vehicle and is attached to the work vehicle to enable traveling on a track. A guide wheel that is fitted and guides the vehicle to the track, a support mechanism that movably supports the guide wheel at a position that matches the track and a position that is separated from the track, and a guide wheel that is supported by the support mechanism. Actuating means for moving to a position corresponding to the track or a position away from the track.

In order to solve the above-mentioned problems, the present invention proposes that all driving wheels of the vehicle are brought into contact with a track to transmit driving force to the track. According to another aspect of the present invention, there is provided a work vehicle provided with a working device, comprising: a guide wheel that is fitted into a track to guide the vehicle to the track; Track support attachment having a support mechanism movably supporting a position separated from the track, and operating means for moving a guide wheel supported by the support mechanism to a position matching the track or a position separated from the track. The guide wheel is moved to a position corresponding to the track while the track running attachment is mounted on the vehicle body, and the guide wheel guides the vehicle to the track to travel on the track. It is proposed to move the guide wheel to a position away from the track and travel on the road.

Further, in order to solve the above-mentioned problems, the present invention is directed to a case where all the drive wheels of the working vehicle contact the track when the guide wheels of the track running attachment are aligned with the track, and transfer the driving force to the track. Suggest that it can be communicated to

In order to solve the above-mentioned problems, the present invention proposes that the number of driving wheels is three or more. Further, in order to solve the above-mentioned problem, the present invention proposes to have a lock means for locking the steering mechanism in a straight traveling state when traveling on a track.

In order to solve the above-mentioned problems, the present invention proposes that the working device is a snow removing device. In order to solve the above-mentioned problem, the present invention proposes that the working device is a mowing device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a snowplow as an example of a work vehicle equipped with a track traveling attachment according to the present invention. FIG. 2 is a plan view of the snowplow.

As shown in these drawings, the snowplow 1 of the present embodiment includes a rotary snowplow 10 at the front of the vehicle. The rotary snow removal device 10 has an auger 11, a blower (not shown) and a chute 12, and throws snow scraped by the auger 11 from the chute 12 with the blower. The snow removal device is not limited to the rotary type, but may be a plow type.

The snowplow 1 according to the present embodiment is a chassis (frame).
A front body 1a and a rear body 1b are connected by a center pin 2 so as to be able to be bent left and right (in the direction of travel) by a center pin 2, and a hydraulic cylinder 3, 3 is steered. The snowplow 1 has a total of three wheels, that is, two wheels on the front body 1a and one axis on the rear body 1b, and all six wheels are driving wheels.

A track running attachment 20 is mounted between the front vehicle body 1a and the snow removing device 10, and a track running attachment 30 is mounted at the rearmost portion of the rear body 1b. Front attachment 20 and rear attachment 3
0 is provided with a pair of rail guide wheels 21 and 31, respectively. The guide wheels 21 and 31 are provided to be movable between a position indicated by a solid line and a position indicated by a virtual line in FIG. When traveling on a general road, guide wheels 21 and 31
To the position shown by the solid line in FIG.
Run at ~ 6. When traveling on railroad rails, the guide wheels 21 and 31 are lowered to the positions indicated by phantom lines in FIG. 1, the guide wheels 21 and 31 are fitted to the rails, and all six tires 4 to 6 are mounted. Drive as driving wheels. The guide wheels 21 and 31 are wheels for guiding the snowplow 1 so as not to come off the rails, and are not driven. The guide wheels 21 and 31 are made of metal, and are iron wheels in this embodiment.

FIG. 3 is a side view showing the structure near the front attachment 20. As shown in FIG. In this figure, an auxiliary frame 13 is attached to link rods 7, 8 attached to the tip of a front body 1a of a snowplow. Upper and lower link bars 7
As shown in FIG. 2, the auxiliary frame 13 is supported by a total of four link rods 7, 8, since a pair is provided in the width direction of the snowplow as shown in FIG. The auxiliary frame 13 includes a bracket 14, an upper girder 15, and a lower girder 1.
6, members such as the front frame 17 are fixed, and the front attachment 20 and the snow removing device 10 are mounted and supported via these strength members.

A hydraulic cylinder 9 is disposed between a fulcrum of attachment of the upper link rod 7 to the frame 13 and a lower end of the front body 1a. By expanding and contracting the pair of hydraulic cylinders 9 provided in the width direction of the snowplow, the front attachment 20 and the snowplow 10 can be integrally moved up and down.

The front attachment 20 includes the guide wheel 2
1, swing frame 22, projecting arm 23, swing cylinder 24
And the like. A swing frame 22 that supports the guide wheel 21 is pivotally attached to the lower girder 16 by a fulcrum 25. The swing cylinder 24 is pivotally attached to the auxiliary frame 13 via a bracket 14 by a fulcrum 26 provided at the upper end thereof. The lower end of a swing cylinder 24 is pivotally attached to a fulcrum provided at the tip of a projecting arm 23 projecting from the swing frame 22.

With such a configuration, the swing cylinder 24
, The guide wheel 21 and the swing frame 22 rotate around the fulcrum 25, and the guide wheel 21 swings between the solid line position and the imaginary line position shown in the figure. The swing cylinder 24 can be configured as a hydraulic cylinder, and its expansion and contraction can be controlled from the driver's seat of the snowplow 1.
Further, the hydraulic cylinder 9 for integrally moving the front attachment 20 and the snow removing device 10 up and down can also be controlled from the driver's seat of the snow removing vehicle 1.

FIG. 4 is a side view showing the structure of the rear attachment 30. As shown in FIG. The rear attachment 30 includes a guide wheel 31, a swing frame 32, an arm member 33, a swing cylinder 34, and the like. The rear attachment 30 is mounted on a bumper 19 at the rearmost part of the chassis 18 of the rear body 1b of the snowplow 1 via a bracket 37 having a substantially "K" shape. A swing frame 32 rotatably supporting the guide wheel 31 is pivotally attached to a lower right end portion of a bracket 37 by a fulcrum 35 so as to be swingable. The swing cylinder 34 has its upper end pivotally attached to the upper right end of a bracket 37 by a fulcrum 36.

With such a configuration, the swing cylinder 34
, The guide wheel 31 and the swing frame 32 rotate around the fulcrum 35, and the guide wheel 31 swings between the solid line position and the imaginary line position shown in the figure. The expansion and contraction of the swing cylinder 34 can be controlled from the driver's seat of the snowplow 1.

Here, the running mode of the snowplow 1 according to this embodiment will be described. The snowplow 1 of the present embodiment can travel on a general road and on a railroad track, and includes traveling while performing snow removal and traveling without performing snow removal on each.

First, when traveling on a general road, the guide wheels 21 of the front attachment and the guide wheels 31 of the rear attachment are both raised to the positions shown by solid lines in FIGS. Further, the snow removing device 10 (and the front attachment 20) is raised by the hydraulic cylinder 9.
Thereby, the front and rear guide wheels 21 and 31 and the snow removing device 10 are provided.
Moves away from the road surface and forwards the general road in such a state.

When performing snow removal work on a general road, the guide wheel 21 of the front attachment and the guide wheel 31 of the rear attachment are both kept at the positions shown by solid lines in FIGS. Then, the snow removal device 10 is lowered by the hydraulic cylinder 9 (at this time, the front guide wheel 21
Is far from the road surface and does not hinder running of the snowplow.) The snow removing device 10 becomes the snow removing work position, and removes snow on the general road in such a state. FIG. 1 shows a state at the time of snow removal work on this general road.

When traveling on a railroad track, the snow removing device 10 is always lowered (snow removing position) at the time of both forward and snow removing operations. And the guide wheel 2 of the front attachment
1 and the guide wheel 31 of the rear attachment together in FIG.
4 is lowered to the position indicated by the virtual line. At this time, the front and rear guide wheels 21 and 31 are set on the rail, and the six tires 4 to 6 of the snowplow are also in contact with the rail. In traveling on the track, the snowplow is guided to the rail by the front and rear guide wheels 21 and 31, and the vehicle travels on the track using all of the six tires 4 to 6 as driving wheels.

Next, entry from the road to the railway will be described. The access from the road to the track can be easily performed by using a railroad crossing. Since the level crossing is made so that the height of the road surface (road surface) and the height of the rail surface substantially match, the snowplow 1 traveling on the road can easily enter the rail. Of course, it is not always necessary to use a railroad crossing, and a separate facility for entry may be provided.

As shown in FIG. 5, a snowplow 1 traveling on a road is curved in a railroad crossing direction as indicated by an arrow A, and the front body 1a of the snowplow coincides with the direction of the track. Let it. As described above, since the snowplow 1 is of the articulated steering type in which the chassis is bent and steered, the rear body 1b does not yet match the direction of the track in this state.

The direction of the front body 1a of the snowplow is matched with the direction of the track, and the tires 4 and 5 (FIG. 1) of the front body 1a are stopped on the rails. At this time, the guide wheel 21
Is in the ascending position, is not yet set on the rails, and is on the rails with tires of the front body.
The hydraulic cylinder 24 of the front attachment 20
By extending (FIG. 3), the guide wheel 21 is lowered to the position shown by the imaginary line in FIG.
To the rail. As a result, the front body 1a of the snowplow is guided by the guide wheels 21 on the rail.

When the guide wheel 21 is fitted on the rail,
As shown by the arrow B in FIG. Then, the rear body 1b of the snowplow is straightened following the front body 1a by the articulate steering,
The tire 6 (FIG. 1) of the rear vehicle body 1b comes on the rail (the guide wheel 31 is still in the raised position). When the tire 6 comes on the rail, it stops, the guide wheel 31 is lowered to the position shown by the imaginary line in FIG. 4, and the left and right wheels 31 are fitted to the rail. Thus, the rear body 1b of the snowplow is also guided on the rail by the guide wheels 31.

The snowplow of this embodiment has a lock mechanism that locks the articulate steering in a straight running state when traveling on a track. In the embodiment, the lock mechanism is realized by locking the hydraulic cylinder 3 for steering shown in FIG. However, the lock device of the steering mechanism is not limited to this, and a lock pin may be provided to lock manually. If the steering mechanism is not maintained in a straight running state during track running, the snowplow may derail from the rail. However, in this embodiment, derailment is prevented by the lock device of the steering mechanism.

The front body 1a and the rear body 1 of the snowplow are removed.
When the vehicle is in the straight traveling state, as shown in FIG. 7, the snow removing device 1 is moved until the tires 4 and 5 of the front vehicle body 1a rise.
When the 0 and the front attachment 20 are lowered, it can be confirmed that the guide wheel 21 has surely conformed to the rail. As described above, the snow removal device 10 and the front attachment 2
0 is a link member 7, 8 at the front of the front body 1a of the snowplow.
And a lifting / lowering cylinder 9.

Now, the guide wheels 21 and 31 before and after the snowplow are removed.
FIG. 8 shows a state in which the vehicle is lowered and fitted on the rail, and the vehicle can run on the rail. As shown in this figure, when the snowplow 1 is traveling on the track, the guide wheels 21 and 31 of the front and rear attachments 20 and 30 match the rails, and a total of 4
In this state, the snowplow is guided on the rails by the guide wheels, and the tires 4 to 6 as the drive wheels of all six wheels are brought into contact with the track. When traveling on iron rails using tires as driving wheels, slippage is likely. However, in the present embodiment, since all six tires are used as driving wheels, a reliable driving force can be obtained.

When the front and rear guide wheels 21 and 31 are moved to the lowered position, the snowplow 1 can be held on the rails by the front and rear guide wheels 21 and 31 and all the tires 4 to 6 can be moved.
The front and rear attachments 20 and 30 are designed so that is appropriately pressed against the rail to obtain an appropriate driving force.

As shown in FIG. 8, the front and rear guide wheels 21,
The snowplow 1 is guided on the rail R by the
By running forward through # 6 as drive wheels, the snow on the rails can be removed by the rotary snow removal device 10. A member for removing snow between the rails may be provided in the snow removing device 10. Of course, it is also possible to mount another type of snow removing device such as a plow or a sweeper instead of the rotary snow removing device. Further, not only the snow removing device but also other working devices such as a mowing device can be mounted, which can contribute to the effective use of the snow removing vehicle in a period other than the time of snowfall.

When the snowplow 1 is moved from the track to the road, the snowplow 1 can be easily returned to the road by using a railroad crossing as in the case of entering the track. In this case, the snowplow 1 traveling on the track is stopped once at the crossing, and the front and rear guide wheels 21,
31 is moved to the raised position shown by the solid line in FIGS. As a result, the snowplow 1 is released from the guide to the rail, and only the tires 4 to 6 are on the rail.
If the vehicle travels right or left off the track from that state, the snowplow 1 easily moves from the rail to the road.

As described above, according to the snowplow 1 of the present embodiment, it is possible to easily move from a general road to a railroad and from a railroad to a road, and a single snowplow can cut the road. It can remove snow and track snow. For this reason, there is no need to separately prepare a snowplow for snow removal on the road and a snowplow vehicle for snow removal on the track, and the vehicle cost does not increase. Also, storage space can be saved.

Further, since the vehicle can be easily moved from the road to the railroad or from the railroad to the road, there is no hindrance to the operation of ordinary trains and trains. it can. Furthermore, since the transfer from the road to the track or from the track to the road can be easily performed by using a normal railroad crossing, no special equipment and manpower are required for entering and leaving the track, which increases costs. Nothing.

In the present embodiment, the front attachment 20 and the rear attachment 30 are configured to be detachable from the snowplow main body. The configuration in which each attachment can be attached to and detached from the snowplow main body can be appropriately designed. For example, in this embodiment, the link members 7, 8 and the lifting / lowering cylinder 9 are removed from the auxiliary frame 13 in FIG. Thereby, the front attachment 20 can be easily removed from the snowplow main body.
When attaching the front attachment 20 to the snowplow 1,
By attaching the link members 7, 8 and the lifting / lowering cylinder 9 to the auxiliary frame 13, as opposed to the removal, the front attachment 20 can be easily attached to the snowplow 1.

The same applies to the rear attachment 30. In FIG. 4, by removing the bracket 37 from the bumper 19, the rear attachment 30 can be easily removed from the snowplow main body. Conversely, the bracket 3 of the rear attachment 30 removed
By attaching 7 to the bumper 19, the rear attachment 30 can be easily attached to the snowplow main body.

The mechanism for attaching and detaching the track running attachment to and from the vehicle is not limited to the configuration of the present embodiment, and can be designed as appropriate. For example, as shown in FIG. 3, the front attachment 20 is pivotally attached to the snowplow main body (members 13 to 17 supported by the main body) at the fulcrum 25 and the fulcrum 26, as shown in FIG.
If this part is configured to be detachable, the front attachment 20 can be detachable from the snowplow main body. The same applies to the rear attachment 30, and the attachment may be configured to be detachable at the fulcrum 36 of the swing cylinder 34 and the fulcrum 35 of the swing frame 32 shown in FIG.

As described above, the front attachment 20 and the rear attachment 30 are configured to be detachable from the snowplow main body (or a member supported by the main body). The part attachment 20 and the rear attachment 30 can be attachable to a snowplow. Thus, the snow removing vehicle can be easily run on the track only by attaching the front attachment 20 and the rear attachment 30 to the snow removing vehicle having the same configuration as the conventional one. Therefore, it is not necessary to make a large design change or a large modification from the conventional snowplow, and a snowplow for both track and road can be easily realized at low cost.

Although the present invention has been described with reference to the illustrated embodiment, the present invention is not limited thereto. For example, the front attachment 20 and the rear attachment 3
In the above embodiment, the power for raising and lowering the guide wheels 21 and 31 at 0 is performed by hydraulic pressure from the main body 1 of the work vehicle. However, the power for moving the guide wheels is not limited to hydraulic pressure, and other power such as air pressure may be used. It is possible to use power. Further, the link configuration for swinging the guide wheels 21 and 31 is not limited to the above embodiment, and the configuration for swinging the guide wheels is not limited to the link system.

The configuration of the working vehicle body is not limited to the above embodiment, and the number of drive wheels may not be six. The steering mechanism is not limited to the articulated steering, but may be an ordinary steering wheel. The lock device of the steering mechanism in that case is not limited to the embodiment.

The working device is not limited to the snow removing device, but may be a mowing device. If the working device is a snow removal device,
Not only the rotary system but also a plow or sweeper system can be used.

Since the working device can be changed to a snow removing device or a mowing device and can be mounted on a working vehicle, snow can be removed from the working vehicle as a snow removing vehicle on tracks and on roads during snowfall. The vehicle can be used as a mowing work vehicle to perform mowing work beside a railroad track, and the working vehicle can be effectively used.

[0046]

As described above, according to the track running attachment of the present invention, a conventional work vehicle such as a snowplow can be used without any major design change or major modification.
A track running attachment can be easily attached, and a track and road working vehicle can be easily realized at low cost.

According to the second aspect of the present invention, since all driving wheels of the vehicle can be brought into contact with the track to transmit the driving force to the track, a reliable driving force can be obtained even when the driving wheels of the vehicle are tires. it can.

According to the work vehicle of the third aspect of the present invention, since the track running attachment is detachably provided on the work vehicle main body, the attachment can be attached to the snow plow without changing the snowplow main body from the special conventional one. A snowplow that can be easily mounted and run on the track can be provided. Therefore, it is possible to easily move from the general road to the track and from the track to the road, and the work on the road and the work on the track can be performed by one work vehicle. In addition, it is possible to carry out work on a track with a small turn without interfering with normal train operation. Further, the attachment can be easily removed from the snowplow when unnecessary.

According to the fourth aspect of the present invention, when the guide wheels of the track running attachment are aligned with the track, all the drive wheels of the working vehicle can contact the track to transmit the driving force to the track. A reliable driving force can be obtained even when the vehicle travels as a drive wheel.

According to the fifth aspect of the present invention, even when three or more driving wheels of the snowplow are used, all driving wheels can be brought into contact with the track to obtain a reliable driving force. According to the configuration of claim 6, since the locking means for locking the steering mechanism in the straight traveling state during track running is provided, the work vehicle can be prevented from derailing during track running.

According to the structure of the seventh aspect, the work vehicle equipped with the snow removing device, that is, the snow removing vehicle can be made a snow removing vehicle that can easily travel on the track. Therefore, snow removal on the track and snow on the road can be performed by one snow plow.

According to the eighth aspect of the present invention, the mowing device can be mounted on the work vehicle so that the mowing device can be easily run on the track, and the mowing work on the side of the track can be performed.

[Brief description of the drawings]

FIG. 1 is a side view showing a snowplow as an example of a work vehicle equipped with a track traveling attachment according to the present invention.

FIG. 2 is a plan view of the snowplow.

FIG. 3 is a partial side view showing a configuration near a front attachment of the snowplow.

FIG. 4 is a side view showing a configuration of a rear attachment of the snowplow.

FIG. 5 is a schematic diagram illustrating a manner in which the snowplow enters a railroad from a road.

FIG. 6 is a schematic diagram illustrating a riding state following FIG. 5;

FIG. 7 is a side view showing a state in which the front guide wheel is checked to be fitted to the rail.

FIG. 8 is a side view showing a state in which the snowplow is traveling on a track.

[Explanation of symbols]

 Reference Signs List 1 work vehicle (rotary snowplow) 4-6 tire (drive wheel) 10 snow removal device 20 front attachment 30 rear attachment 21, 31 guide wheel 22, 32 swing frame (guide wheel support member) 24, 34 swing cylinder ( Actuating means) 25, 35 Oscillating frame oscillation fulcrum 26, 36 Oscillating cylinder oscillation fulcrum

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B61K 13/00 B61K 13/00 Z E01H 8/02 E01H 8/02 11/00 11/00 A (72) Inventor Atsushi Sakuyama F-term (reference) 2B083 BA06 BA12 BA15 BA16 HA02 HA32 HA59 2D026 CB02 CB04

Claims (8)

[Claims] 1. An attachment which is detachably provided on a work vehicle and is attached to the work vehicle to enable traveling on a track, and a guide wheel which is fitted on the track and guides the vehicle to the track. A support mechanism that movably supports the guide wheel at a position matching the track and a position separated from the track, and a position matching the guide wheel supported by the support mechanism or a position separated from the track. And an actuating means for moving the rail. 2. The track running attachment according to claim 1, wherein all driving wheels of the vehicle are brought into contact with the track to transmit driving force to the track. 3. A work vehicle provided with a work device, comprising: a guide wheel fitted into a track to guide the vehicle to the track;
A support mechanism that movably supports the guide wheel at a position that matches the track and a position that is separated from the track, and a support mechanism that supports the guide wheel supported by the support mechanism at a position that matches the track or a position that is separated from the track. A track running attachment having operating means for moving the track running detachably provided on the vehicle body, and moving the guide wheel to a position matching the track while the track running attachment is mounted on the vehicle body, and moving the vehicle with the guide wheel. Guide the vehicle to the track and run on the track,
A work vehicle which travels on a road by moving the guide wheel to a position away from a track. 4. When the guide wheels of the track running attachment are aligned with the track, all drive wheels of the work vehicle can contact the track to transmit driving force to the track. 3. The work vehicle according to 3. 5. The work vehicle according to claim 4, wherein the number of drive wheels is three or more. 6. The vehicle according to claim 3, further comprising locking means for locking the steering mechanism in a straight traveling state during orbital travel.
A working vehicle according to claim 1. 7. The work vehicle according to claim 3, wherein the work device is a snow removal device. 8. The work vehicle according to claim 3, wherein the work device is a mowing device.