JP2600270Y2 - Track-land vehicle traveling equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling device which enables both road traveling and track traveling in a track-and-land vehicle capable of traveling on a road and a track (railroad rail).

[0002]

2. Description of the Related Art When performing maintenance and inspection of a trolley wire and various facilities installed along a track, a track-and-land vehicle (also referred to as a track-and-work vehicle) that can run not only on a road but also on a track. Is often used. This track-and-land vehicle is configured on the basis of a vehicle running on a road, such as a truck, and includes a track running wheel (iron wheel) at a lower portion of a vehicle body in addition to a road running wheel (rubber tire wheel). The wheels can be extended and retracted downward from the vehicle body. When the track-and-land vehicle travels on the road, the track traveling wheels are stored, the vehicle body is supported only by the road traveling wheels, and the road traveling is performed by driving the driving wheels of the road traveling wheels. .

On the other hand, when this track-and-land vehicle travels on a track, track running wheels project on the track, and the vehicle body is supported on the track by the track running wheels. However, at this time, the track running wheels do not protrude until the road running wheels are completely lifted, but the road running wheels are in contact with the track, and the road running wheels are driven in this state to drive the track and land. Cars run on tracks.

[0004]

[Problems to be Solved by the Invention] When such a track-and-land vehicle is run on a track to perform work, the work is often performed using a work device on a vehicle body while running slowly on the track. It is necessary for the operator to control both the traveling of the tracked vehicle and the operation of the working device. Here, as described above, when traveling on a track, the traveling drive is controlled by performing the rotational drive control of the traveling wheels. The rotational drive control of the traveling wheels is the same as the traveling control of a vehicle such as a normal truck. The worker sits in a driving cabin and performs the operation. For this reason, the conventional track-and-land vehicle requires a driver for traveling control and a worker for operating the working device, and has a problem that the working efficiency is not good.

Further, in the traveling control by the rotational drive control of the traveling wheels, it is very difficult to perform the traveling at a low speed, and the traveling control in which the traveling is performed at a low speed while synchronizing with the operation has been a difficult task with considerable skill. . In addition, a power source (hydraulic power source) of a working device on a vehicle body is often obtained by driving a hydraulic pump by a PTO (power extracting means) of a vehicle driving engine. And the driving force of the working device
There is a problem that the engine speed increases depending on the traveling speed, and the PTO speed increases, which may damage the PTO portion or the hydraulic pump.

[0006] In some cases, a plurality of such track-and-land vehicles are connected on a track to perform work. In such a connection work, it is often the case that only one rail-land vehicle (for example, the first rail-land vehicle) is driven to travel and the remaining rail-land vehicles are towed to perform the work. However, as described above, when traveling on track and land, the running wheels of the towed tracked vehicle are also in contact with the track, which causes running resistance. There is. Furthermore, since the braking force of each track-and-land vehicle is obtained by actuating the brakes of the traveling wheels, there is a problem that even in towing work, each track-and-land vehicle requires at least a driver to perform brake operation control. .

The present invention has been made in view of such a problem.
It is an object of the present invention to provide a traveling apparatus having a configuration in which a control for traveling a track-and-land vehicle at a high speed and a low speed on a track is easy. The present invention further reduces the running resistance of towing travel,
An object of the present invention is to provide a traveling device having a configuration in which traveling control during towing is also easy.

[0008]

In order to achieve such an object, in the present invention, the road driving wheels are driven to rotate by the first driving means to drive on the road, and the overhanging storage means is used for the track driving. The track-and-land vehicle travel device is configured so that the wheels protrude on the track and travel on the track, and a clutch for switching connection / disconnection of the rotational driving force from the second drive means to the track traveling wheels is provided. The track running wheels are stored by the overhang storage means on the vehicle body side, the first running position overhanged by the first overhang amount, and the first running position.
It is possible to move to the second traveling position overhanging by the second overhang amount larger than the overhang amount.

When the track running wheels are in the stowed position, only the road running wheels are in contact with the ground, so that the ground driving wheels are rotated by the first drive means to perform road running. When the track running wheel is in the first running position, the track running wheel rides on the track to support the vehicle body and the road running wheel comes into contact with the track, so that the clutch connects the second drive means to the track running wheel. In a state where the connection is cut off, the road driving wheels are rotationally driven by the first driving means to perform track running. As a result, high-speed traveling of the track-and-land vehicle on the track is possible. On the other hand, the track running wheels
In the traveling position, the track running wheels ride on the track to support the vehicle body and the road running wheels are separated from the track, so that the second driving means and the track running wheels are connected by the clutch, The track driving wheels are rotationally driven by the two driving means to perform the track running. The track running wheels only control the running on the track, and are independent of the road running wheels. Therefore, means such as a hydraulic motor that rotates at a low speed suitable for this can be used. Traveling is possible, and remote traveling control is possible.

A brake means for braking the track running wheel is provided, and when the track running wheel is in the second running position,
It is preferable that the vehicle travels on the track while braking the rotation of the track running wheels by the braking means.

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a track-and-ground work vehicle equipped with a traveling device according to the present invention. This track-and-land work vehicle 1 is configured based on a truck, and travels on a road with tire wheels (front wheels, rear wheels) 3 (wheels for road traveling) attached to four places on the front, rear, left and right of a vehicle body 2. Can be. Furthermore, iron wheels 4 (track running wheels) are attached to four front, rear, left and right portions of the vehicle body 2 so as to be able to protrude downward and retract upward. The vehicle body 2 can run on the rail R by placing the vehicle body 2 on a rail (track) R for railway with the iron wheels 4 overhanging.

As shown in detail in FIG. 2, the iron wheel 4 is rotatably mounted on a rotating shaft 22 of an iron wheel support bracket 21. The bracket 21 is swingable about a swing shaft 22 so as to be swingable about the vehicle body (fixed to the vehicle body). Attached support arm 2). The overhanging / retracting operation of the iron wheel 4 is performed by the expansion / contraction operation of the iron wheel overhanging / storage hydraulic cylinder 5 (extending and retracting means) attached between the vehicle body 2 and the iron wheel supporting bracket 21 that rotatably supports the iron wheel 4. Bracket 2
1 is oscillated about the oscillating shaft 22.

In order to move the vehicle body 2 from the road to the rail R, a center jack 6 is attached to the lower center of the vehicle body 2. The center jack 6 extends downward with respect to the vehicle body 2 to support the vehicle body 2 so as to be lifted with respect to the ground. Is stored. Center jack 6
Is carried out by the expansion and contraction operation of the built-in hydraulic cylinder 7 for jacks. The vehicle body 2 can freely turn horizontally with respect to the center jack 6, and the turning operation is performed manually or by operating a vehicle turning hydraulic motor 8 built in the vehicle body 2.

Also, on the upper surface of the vehicle body 2,
0 is attached. This high-altitude working device 10 has a swivel 11 attached to the rear of the vehicle body 2 so as to be capable of horizontal swing operation with respect to the vehicle body 2, and an up-and-down operation freely attached to an upper portion of the swivel table 11, and has a telescopic shape. The boom 12 includes a boom 12 that can be freely extended and retracted, and a workbench 13 that is attached to an end of the boom 12 and that is used for boarding a worker. The turning operation of the turntable 11 is performed by operating a boom turning hydraulic motor 14 incorporated in the vehicle body 2.
In addition, the raising and lowering operation of the boom 12 is performed by the expansion and contraction operation of a hydraulic cylinder 15 for raising and lowering mounted between the swivel 11 and the boom 12 and a hydraulic cylinder 16 for expanding and contracting built in the boom 12, respectively. Further, the height working device 10 is stored in the vehicle body 2 by placing the fully reduced boom 12 on a boom receiver 18 provided above the front part of the vehicle body 2.

A lower operation box 40 is attached to a side surface of the swivel base 11. This lower operation box 40
The vehicle body turning operation lever 43 for controlling the horizontal turning operation of the vehicle body 2 around the center jack 6, the boom turning operation lever 44 for controlling the turning operation of the swivel base 11, and the up / down movement of the boom 12. An up / down operation lever 45 and an expansion / contraction operation lever 46 for controlling the expansion / contraction operation are provided.

The work table 13 has an upper operation box 5.
The upper operation box 50 includes a boom turning operation lever, an up / down operation lever, and a telescopic operation lever (none of them are numbered), and an iron wheel traveling control lever (not shown) for driving and controlling the iron wheel 4. (Without numbering). Further, at the rear of the vehicle body 2, there is provided an operation box including an operation lever 41 for the iron wheel for controlling the operation of extending and retracting the iron wheel, and an operation lever 42 for the jack for controlling the operation of supporting and retracting the center jack 6. ing.

The track-and-land work vehicle 1 configured as described above travels on a road to a position near a work site. At this time, each iron wheel 4 is lifted toward the vehicle body 2 and is located at the storage position, the front and rear tire wheels 3 are in contact with the ground, and the rear tire wheels are driven to travel. When the vehicle arrives at a railroad crossing near the work site, it stops across the rail R, and the vehicle body 2 of the work vehicle 1 is supported on the ground by operating and supporting the center jack 6 through operation of the jack operation lever 42. Is done. Then, through the operation of the vehicle body turning operation lever 43, the vehicle body 2 is horizontally turned around the center jack 6 so as to be parallel to the rail R.

Next, the iron wheel operating lever 41 is operated to extend the iron wheel hydraulic cylinder 5 as shown in FIG. The iron wheel in the state indicated by the two-dot chain line is extended downward. Then, the center jack 6 is retracted, and each iron wheel 4 is placed on the rail R. At this time, the overhang amount of the iron wheel 4 by the overhang storage hydraulic cylinder 5 is adjusted so that each wheel 3 abuts on the rail R while the iron wheel 4 is mounted on the rail R. Is referred to as a first overhang amount EL1, and the position of the iron wheel 4 at this time is referred to as a first traveling position. The iron wheel 4 'in the first traveling position is mounted on the rail R as shown by a solid line in FIG.
Is also on the rail R. When the rear wheel 3 that is a driving wheel is driven in this state, the track-and-land work vehicle 1 can travel on the rail R and can move to the work site.

As shown in FIG. 3, the iron wheel 4 is mounted on a rotating shaft 23 of a bracket 21 together with a clutch 25, a speed reducer 26 and a hydraulic motor 27, and moves on the rail R to the work site as described above. At times, the power transmission is disconnected by the clutch 25, and the iron wheel 4 travels on the rail R in a free state. Therefore, the rear wheel 3 is driven in a manner similar to that of traveling on a road, so that the track and land vehicle 1 can travel on the rail R at high speed. Since work on the track must be performed between trains, time constraints are strong, and movement to the work site is required to run at the highest possible speed. ing.

At the work site, an operator (not shown) on the work table 13 raises and lowers the boom 12 by operating each operation lever provided on the upper operation box 50.
The work is performed at an arbitrary height, such as above the rail R, by extending or retracting the swivel 11 or swiveling the swivel table 11. This work is performed not only in a state where the track-and-land work vehicle 1 is stopped, but also while the track-and-land work vehicle 1 is running at a low speed on the rail R. For this reason, it is necessary to perform traveling control for moving the track-and-ground work vehicle 1 at an extremely low speed in accordance with the work speed.

When such low-speed running is performed,
The extension storage hydraulic cylinder 5 is further extended to extend the iron wheel 4 to the position indicated by the two-dot chain line in FIG. 2 (the position of the iron wheel 4 ″).
The position of the iron wheel 4 "at this time is called a second travel position. When the iron wheel 4" is extended to the second travel position, only the iron wheel 4 "is mounted on the rail R ', and the front and rear wheels 3 are 'Away from Although FIG. 2 shows a relative positional relationship between the iron wheel 4 and the rail R with respect to the vehicle body in a state where the vehicle body 2 is fixed, actually, the vehicle body 2 moves up and down with respect to the rail R.

In this state, when the clutch 25 is connected, the drive hydraulic pressure is supplied to the hydraulic motor 27 via the hose 27a and the hydraulic motor 27 is rotated, the rotation is reduced by the speed reducer 26, and then the clutch 25 is released. The iron wheel 4 "is transmitted to the iron wheel 4" via the motor and the iron wheel 4 "is rotated. This hydraulic motor 2
The rotation speed of 7 is set to a speed suitable for running the track-and-land vehicle 1 at a low speed, and the work can be performed by running the track-and-land vehicle 1 on the rail R at a low speed.

If the iron wheel 4 is located at the first traveling position as described above, the rear wheel 3 can be driven and traveled. However, since the rear wheel 3 is used for traveling on a road, the rear wheel 3 is used for traveling on a road. In addition, it is difficult to perform low-speed traveling suitable for work, and it is necessary to perform driving control of the rear wheel 3 with the driver sitting in the driver's seat of the track-and-land vehicle 1. There is a problem that at least two people are required. For this reason, in the present invention, the iron wheel 4 is located at the second traveling position, and the iron wheel 4 can be driven independently by the hydraulic motor 27. Thereby, it is easy to make the track-and-land vehicle 1 run at a desired low speed suitable for work. Further, the drive control can be remotely controlled by an iron wheel running control lever provided on the work table 13.
For this reason, the work can be performed while the travel control is performed by only one worker of the work table 13, and the work efficiency is high.

It should be noted that instead of the configuration as shown in FIG. 3, an iron wheel having a configuration as shown in FIG. 4 can be used. Here, the iron wheel 4 is rotatably supported by the rotating shaft 23 of the bracket 21, and the iron wheel 4 is provided with a brake 30 capable of braking the rotation. The operation of the brake 30 is controlled by a brake hydraulic pressure supplied via a hose 31.

It is preferable that the rail-land vehicle having such a configuration is used for a towed rail-land vehicle when a plurality of rail-land vehicles are connected and run on the rail R. In the case of a towed track-and-land vehicle, it is not necessary to rotationally drive the iron wheels. Therefore, the configuration shown in FIG. 4 is employed, and the towing is performed with the iron wheels 4 positioned at the second traveling position. In the second travel position, the front and rear wheels 3 are separated from the rail R, so that the front and rear wheels 3 do not cause resistance in towing travel, and the iron wheel 4 can be freely rotated to realize smooth towing travel.

The brake 30 is adapted to be actuated by sending an operating oil pressure through a hose 31 when the brake of the tow track vehicle is actuated. The brake 30 of the connected towed land vehicle is also actuated, and smooth towing travel can be performed. When the track-and-land vehicle using the configuration of FIG. 4 travels alone on the rail R, the iron wheel 4 is located at the first travel position and the rear wheel 3 is driven.

Further, a configuration obtained by combining the configuration of FIG. 3 and the configuration of FIG. 4, that is, the iron wheel can be driven to rotate by a hydraulic motor, a speed reducer and a clutch, and a brake capable of braking the rotation of the iron wheel is provided. A configuration may be used.

[0029]

[Effects of the Invention] As described above, according to the present invention,
When the track running wheels are in the retracted position, only the road running wheels are in contact with the ground, so that the ground driving wheels can be rotationally driven by the first driving means to perform the road running, and the track running wheels can be driven. In the first traveling position, the track running wheels ride on the track to support the vehicle body and the road running wheels contact the track, so that the clutch disconnects the second drive means from the track running wheels. In this state, the road driving wheels are rotationally driven by the first driving means to perform the track running, whereby the orbital vehicle on the track can run at high speed. When the track running wheels are at the second running position, the track running is performed. And the road running wheels are separated from the track while the wheels are on the track and the road running wheels are separated from the track, so that the second driving means and the track running wheels are connected by the clutch, and the second driving means It is possible to perform the track traveling by rotating the road road wheels. Here, the track running wheels are only for running control on the track, and are independent of the road running wheels. Therefore, a means such as a hydraulic motor that rotates at a low speed suitable for this can be used. It is easy to make the vehicle run at a low speed suitable for the work in the vehicle. Furthermore, since the driving can be controlled remotely from a workbench or the like,
It is possible for an operator who has boarded the work table to perform work while performing travel control, thereby improving work efficiency.

A brake means for braking the track running wheel is provided, and when the track running wheel is in the second running position,
It is preferable that the track travel is performed while braking the rotation of the track travel wheels by the brake means. Thus, when the track travel is performed with the track travel wheels in the second travel position, the brake means is used. Thus, appropriate braking can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing a track-and-ground work vehicle provided with a traveling device according to the present invention.

FIG. 2 is a front view showing the periphery of an iron wheel and a rear wheel of the track and land working vehicle.

FIG. 3 is a side view showing a configuration of an iron wheel.

FIG. 4 is a side view showing a configuration of an iron wheel according to a different example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Track-and-rail work vehicle 2 Body 3 Wheel 4 Iron wheel 5 Hydraulic cylinder for overhang storage 10 Working device 21 Iron wheel support bracket 25 Clutch 27 Hydraulic motor 30 Brake R rail

Continuation of front page (56) References JP-A-4-271908 (JP, A) JP-A-3-16713 (JP, A) JP-A-5-49415 (JP, U) (58) Fields surveyed (Int .Cl. ⁶ , DB name) B60F 1/00-1/04

Claims (2)

(57) [Scope of request for utility model registration] 1. A road running wheel mounted on a vehicle body, first driving means for rotating and driving the road running wheel, a track running wheel mounted on the vehicle body so as to be able to protrude downward, and the track A second driving means for rotating and driving the traveling wheel, a clutch for switching connection and disconnection of the rotational driving force from the second driving means to the track traveling wheel, and An overhanging storage means for performing storage, wherein the track running wheel has a storage position stored on the vehicle body side, a first running position overhanged by a first overhang amount, A second traveling position overhanging by a second overhang amount larger than the overhang amount, and when the track traveling wheel is in the storage position, the ground traveling road wheel is driven by the first drive. Drive the vehicle to run on the road, When the track running wheel is at the first running position, the track running wheel rides on the track to support the vehicle body, and the road running wheel contacts the track, and the clutch drives the second drive unit with the second drive unit. Disconnecting the connection with the track running wheel, rotating the road running wheel by the first driving means to perform track running, and when the track running wheel is in the second running position, the track A traveling wheel rides on the track to support the vehicle body, and the road traveling wheel separates from the track, connects the second driving means and the track traveling wheel by the clutch, and the second driving means A track-land vehicle traveling device, wherein the track traveling wheel is rotationally driven to perform track traveling. And a brake means for braking the track running wheel, wherein when the track running wheel is at the second running position, the track means brakes the rotation of the track running wheel by the brake means. The traveling device for a tracked vehicle according to claim 1, wherein the traveling device is adapted to perform traveling.