JP6934090B2 - Road-rail vehicle - Google Patents

Description

The present invention relates to a road-rail vehicle capable of switching between traveling on a road with tire wheels and traveling on a track with iron wheels.

For example, a road-rail vehicle, which is a work vehicle used for constructing and inspecting railway equipment such as trolley lines on the track, is constructed based on a truck and is equipped with wheels for road running at four locations on the front, rear, left and right sides of the vehicle body. At the same time, the wheels for traveling on the rail are attached so as to be able to operate downwardly and retract upward, so that the vehicle can travel both on the road and on the track.

The inventor has proposed in Patent Document 1 (Utility Model Registration No. 3167166) that such a road-rail vehicle is provided with a loading space for a container.
Utility Model Registration No. 3167166

In the above-mentioned road-rail vehicle, a turntable 15 is provided to be used when switching from traveling on the road to traveling on the track (at the time of loading). The problems of the conventional technology with respect to such a turntable 15 will be described with reference to FIG.

FIG. 11A shows the base vehicle 2, which is generally a vehicle equipped with a diesel engine. In this specification, the vehicle portion on the rear side of the driving cabin 3 is referred to as the loading platform portion 5. Further, a portion of the vehicle excluding the grounded configuration (which may be a tire wheel, an iron wheel, a turntable, a fulcrum of the present invention, or a wheel for rotating a vehicle body) is referred to as a "vehicle body".

In recent years, regulations on exhaust gas have become more and more strict, and in particular, vehicles such as trucks having a diesel engine are obliged to install the exhaust gas purification device 13. When the exhaust gas purifying device 13 purifies the exhaust gas, it is necessary that the exhaust gas has a temperature equal to or higher than a predetermined temperature. Therefore, as shown in FIG. 11A, the exhaust gas purifying device 13 is used. It is laid out near the engine (not shown) (in front of the loading platform 5).

For the base vehicle 2 provided with such an exhaust gas purification device 13, it is not possible to secure a sufficient space for mounting the turntable 15. Therefore, as shown in FIG. 11B, in order to mount the turntable 15, the road-rail vehicle 1 is composed of a base vehicle having a long wheelbase. As described above, in the road-rail vehicle 1 equipped with the conventional turntable 15, there is a problem that the length of the vehicle is not longer than necessary.

FIG. 11B shows a road-rail vehicle 1 in which the turntable 15 is mounted on a base vehicle having an extended wheelbase, and FIG. 11C shows the turntable 15 operated in such a road-rail vehicle 1. Indicates the state.

In the road-rail vehicle 1 with an extended wheelbase, the weight 18 is used to balance the front and rear of the vehicle in the state shown in FIG. 11 (C) in which the turntable 15 is operated and the vehicle body is supported by the turntable 15. Must be installed. Such a weight 18 has a problem that the load capacity of the road-rail vehicle 1 is reduced to 200 kg to 400 kg and the fuel consumption efficiency of the road-rail vehicle 1 is deteriorated.

Further, in the state shown in FIG. 11C, when rotating the road-rail vehicle 1, there is a problem that an operator of the turntable 15 and a worker such as a vehicle body rotation assistant are required. Further, for example, when the railroad crossing with a cant is used, the vehicle body lifted by the turntable 15 naturally rotates to the lower side, and there is a risk that the vehicle body rotation assistant may be involved. There was also a problem.

In order to solve such a problem, the road-rail vehicle according to the present invention is a road-rail vehicle capable of switching between traveling on a road by tire wheels and traveling on a track by iron wheels, and has a fulcrum below. It consists of a driving cabin provided, a loading platform portion provided with wheels for rotating the vehicle body having an axle perpendicular to the axle of the tire wheel and the axle of the iron wheel, and the fulcrum is a cylinder rod that expands and contracts. , A float provided at the tip of the cylinder rod and grounded on the ground.

Further, the road-rail vehicle according to the present invention is characterized in that the fulcrum includes a spherical joint.

Further, the road-rail vehicle according to the present invention is characterized by having a drive source for driving the vehicle body rotation wheels.

Further, the road-rail vehicle according to the present invention is characterized in that the drive source is a hydraulic motor.

Further, the road-rail vehicle according to the present invention is characterized in that the vehicle body rotation wheels are arranged between the front wheels and the rear wheels of the tire wheels.

Since the road-rail vehicle according to the present invention can be rotated by the wheels for rotating the vehicle body around the fulcrum and can be loaded and unlined, it is not necessary to mount a conventional turntable. As a result, according to the road-rail vehicle according to the present invention, it is not necessary to extend the wheelbase and mount a weight, so that the load capacity does not decrease and the fuel consumption efficiency does not deteriorate. ..

Further, according to the road-rail vehicle according to the present invention, since a worker who handles the turntable is not required, it is possible to eliminate the risk of the worker being involved when the vehicle body rotates.

Further, in the conventional rotation of the road-rail vehicle by the turntable, it was not possible to carry out the loading and unloading at the railroad crossing at the end, but according to the road-rail vehicle according to the present invention, the loading at such a railroad crossing・ Derailment is possible.

Further, according to the road-rail vehicle switching method according to the present invention, since the worker who handles the turntable becomes unnecessary, it is possible to eliminate the risk of the worker being involved when the vehicle body rotates. In particular, if a drive source for driving the wheels for rotating the vehicle body is provided, it is possible to eliminate the need for a worker required for the rotation of the road-rail vehicle.

It is a figure which shows the side surface of the road-rail vehicle 1 which concerns on embodiment of this invention. It is a figure which shows a part structural example at a fulcrum 100. It is a figure which looked at the mounting structure of the wheel body rotation wheel 200 from the side surface of the road-rail vehicle 1. It is a figure which shows the stored state (A) of the vehicle body rotation wheel 200, and the deployed state (B) at the time of touchdown. It is a figure explaining the switching method of the road-rail vehicle 1 which concerns on embodiment of this invention. It is a figure explaining the switching method of the road-rail vehicle 1 which concerns on embodiment of this invention. It is a figure explaining the switching method of the road-rail vehicle 1 which concerns on embodiment of this invention. It is a figure explaining the switching method of the road-rail vehicle 1 which concerns on embodiment of this invention. It is a figure explaining the switching method of the road-rail vehicle 1 which concerns on embodiment of this invention. It is a figure which shows the road-rail vehicle 1 which concerns on other embodiment of this invention, and the traveling switching method by the road-rail vehicle 1. It is a schematic diagram explaining the problem of the conventional road-rail vehicle.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a side surface of a road-rail vehicle 1 according to an embodiment of the present invention.

The road-rail vehicle 1 has a tire wheel 7 which is a wheel for traveling on a road, and an iron wheel 27 which is a wheel for traveling on a track and is placed on a rail when traveling on a track. Here, in the present specification, the fact that the iron wheel 27 is placed on the rail is referred to as mounting, and the intentional removal of the iron wheel 27 from the rail is referred to as disconnection.

The road-rail vehicle 1 is based on a commercially available truck and is equipped with an iron wheel 27 for traveling on a track. The iron wheel 27 is attached to the elevating mechanism, and when the iron wheel 27 is raised, the tire wheel 7 touches the ground and the road-rail vehicle 1 can travel on the road.

On the other hand, when the elevating mechanism lowers the iron wheel 27 so as to rest on the rail, the tire wheel 7 is separated from the ground. When the iron wheels 27 are lowered by the elevating mechanism, the rear wheels of the tire wheels 7 that are rotationally driven by the engine (not shown) are configured to be in contact with the transmission wheels 28. A power transmission mechanism is provided between the transmission wheel 28 and the rear iron wheel 27, and the rotational driving force of the engine (not shown) is transmitted to the rear iron wheel 27. As a result, the road-rail vehicle 1 can travel on the rail.

As the elevating mechanism to which the iron wheels 27 are attached and the power transmission mechanism between the transmission wheels 28 and the iron wheels 27, conventionally known ones can be appropriately used.

Conventionally, the turntable is used to switch between traveling on the road by the tire wheels 7 and traveling on the track by the iron wheels 27. The turntable allows the road-rail vehicle 1 to be placed on the rail from the road or to be separated from the rail by rotating the direction of the road-rail vehicle 1 by approximately 90 ° at a railroad crossing where the road and the rail intersect. It can be placed on top.

On the other hand, in the road-rail vehicle 1 according to the present invention, the direction of the road-rail vehicle 1 is determined by the fulcrum 100 provided below the driving cabin 3 side and the vehicle body rotation wheel 200 provided on the loading platform 5. By rotating it by about 90 °, it does not require a conventional turntable.

The fulcrum 100 provided below the operation cabin 3 side includes, for example, a hydraulic cylinder 120, a cylinder rod 125 that expands and contracts from the hydraulic cylinder 120 by hydraulic pressure, and a float 130 provided at the tip of the cylinder rod 125. It can be configured from.

The hydraulic cylinder 120 brings the float 130 to the ground with the cylinder rod 125 extended. Then, it is assumed that the cylinder rod 125 is further extended so that the tire wheel 7 is floated from the ground.

As shown in FIG. 2, it is preferable that the cylinder rod 125 between the hydraulic cylinder 120 and the float 130 is provided with a spherical joint 140. Such a spherical joint 140 includes a float-side spherical joint 148 and a rod-side spherical joint 143 attached to the float-side spherical joint 148. The float side spherical joint 148 and the rod side spherical joint 143 can freely rotate within a predetermined range.

Since such a spherical joint 140 is provided, the operation of the fulcrum 100 becomes smooth. As a result, the tire wheel 7 can be satisfactorily lifted from the ground regardless of the state of the ground on which the float 130 touches the ground.

By setting the longitudinal direction of the hydraulic cylinder 120 to be parallel to the vertical direction as shown in FIG. 1, the tire wheel 7 can be floated from the ground and function as a fulcrum 100. On the other hand, when the traveling switching operation is not performed, the function of the fulcrum 100 is unnecessary, so that the hydraulic cylinder 120 in the state where the cylinder rod 125 is contracted maintains a state in which the longitudinal direction thereof is parallel to the horizontal direction. Can be done. Such a state is maintained when the road-rail vehicle 1 travels.

As described above, the road-rail vehicle 1 according to the present invention is provided with a mechanism capable of making the longitudinal direction of the hydraulic cylinder 120 two modes, one is parallel to the vertical direction and the other is parallel to the horizontal direction. As such a mechanism, a well-known mechanism can be appropriately used. Further, the driving force of such a mechanism may be a hydraulic force, a motor, or the like, or may be a human power.

When switching between road traveling and track traveling, in order to rotate the direction of the road-rail vehicle 1 by approximately 90 °, a vehicle body rotating wheel 200 attached to the loading platform 5 is used together with the fulcrum 100 as described above. Two such wheels 200 for rotating the vehicle body are attached to the left and right side surfaces of the road-rail vehicle 1.

Further, in the present embodiment, the vehicle body rotation wheel 200 is laid out and attached between the front wheel and the rear wheel of the tire wheel 7. According to such a layout, the vehicle body rotation wheel 200 can be compactly mounted on the road-rail vehicle 1 and does not interfere with the loading and unloading of the load on the loading platform 5.

In FIG. 1, the direction of the axle of the iron wheel 27 of the tire wheel 7 (longitudinal direction of the axle) is a direction perpendicular to the paper surface, and the rotation of each of these wheels causes the tire wheel 7 to land on the left and right sides of the paper surface. Car 1 can travel.

The term "axle direction" referred to in the present specification essentially determines the direction of travel of the vehicle without including the fine displacement of the axle based on the fine adjustment of the camber angle and the toe angle related to the wheel alignment. In a sense, it refers to the direction of the axle.

The direction of the axle of the vehicle body rotating wheel 200 has a direction perpendicular to the direction of the axle of the iron wheel 27 of the tire wheel 7 as described above. The traveling direction of the vehicle body rotating wheel 200 having such an axle is perpendicular to the paper surface.

When the road-rail vehicle 1 according to the present invention switches between road traveling and track traveling, the grounded vehicle body rotation wheel 200 rotates the direction of the road-rail vehicle 1 by approximately 90 ° around the fulcrum 100. ing. Therefore, in the road-rail vehicle 1 according to the present invention, the wheels 200 for rotating the vehicle body are stored without being grounded when normally traveling on a road or a track, and are stored when switching between road traveling and track traveling. It has a structure in which the wheel body 200 for rotating the vehicle body is deployed and grounded.

Next, the details of the vehicle body rotation wheel 200 in the road-rail vehicle 1 according to the present invention will be described. FIG. 3 is a view of the mounting structure of the vehicle body rotation wheel 200 as viewed from the side surface of the road-rail vehicle 1. Further, FIG. 4 is a diagram showing a stored state (A) of the vehicle body rotating wheel 200 and a deployed state (B) when the vehicle touches the ground.

In FIG. 3, the longitudinal direction of the axle of the vehicle body rotating wheel 200 is the left-right direction with respect to the paper surface, and in FIG. 4, the longitudinal direction of the axle of the vehicle body rotating wheel 200 is the direction perpendicular to the paper surface.

Brackets 160 are fixed to the chassis frame 150 and subframe 153 of the truck, which is the base vehicle of the road-rail vehicle 1, by fixing means such as bolts and nuts.

A holder 190 is rotatably attached to the bracket 160 about the third support shaft 183. A vehicle body rotation wheel 200 is provided on the holder 190. The hydraulic cylinder 170, which operates by flood control, serves as a power source for storing and deploying the wheels 200 for rotating the vehicle body.

The base side of the hydraulic cylinder 170 is rotatably attached to the bracket 160 about the first support shaft 181. On the other hand, the end of the cylinder rod 175 that expands and contracts from the hydraulic cylinder 170 is rotatably attached to the holder 190 about the second support shaft 182.

With such a configuration, when the cylinder rod 175 is housed in the hydraulic cylinder 170, as shown in FIG. 4A, the vehicle body rotation wheels 200 attached to the holder 190 are left and right side surfaces of the road-rail vehicle 1. It will be stored in the cylinder.

From here, when the hydraulic cylinder 170 extends the cylinder rod 175, the vehicle body rotation wheels 200 attached to the holder 190 are in a state of being grounded on the left and right side surfaces of the road-rail vehicle 1. When the cylinder rod 175 is further extended, the tire wheels 7 are separated from the ground, and the vehicle body is supported by the vehicle body rotation wheels 200 on the loading platform 5 side.

If the fulcrum 100 is also grounded to support the driving cabin 3, the vehicle body of the road-rail vehicle 1 will be entirely supported by one fulcrum 100 and two wheels 200 for rotating the vehicle body. By rotating the vehicle body rotation wheel 200 while the vehicle body is floating in this way, the direction of the road-rail vehicle 1 can be rotated by approximately 90 °.

Here, in the present embodiment, the vehicle body rotation wheel 200 attached to the holder 190 is rotationally driven by the hydraulic motor 195. As a result, the road-rail vehicle 1 can rotate by itself and change its direction by 90 °, and accidents such as the involvement of workers can be prevented. Further, in the present embodiment, the hydraulic motor 195 of the vehicle body rotation wheel 200 is used as the rotation drive source, but another rotation drive source such as an electric motor may be used.

Further, the holder 190 may be provided with the wheel 200 for rotating the vehicle body without using the rotation drive source. According to this, the road-rail vehicle 1 can be constructed at a lower cost. However, in this case, assistance by a worker is required when rotating the direction of the road-rail vehicle 1 by approximately 90 °.

FIG. 1 shows a state in which the fulcrum 100 and the vehicle body rotation wheel 200 are in contact with the ground while the iron wheel 27 is mounted on the rail, and the traveling is being switched.

As described above, in the road-rail vehicle 1 according to the present invention, when switching between road traveling and track traveling, the vehicle body of the road-rail vehicle 1 has three points, one fulcrum 100 and two wheels 200 for rotating the vehicle body. It will be in a grounded state. The two wheels 200 for rotating the vehicle body roll, and the wheels 200 for rotating the vehicle body rotate around the fulcrum 100 in an arc so that the direction of the road-rail vehicle 1 can be rotated.

Since the road-rail vehicle 1 according to the present invention can be rotated by the vehicle body rotating wheels 200 around the fulcrum 100 to be loaded and unlined, it is not necessary to mount a conventional turntable. .. As a result, according to the road-rail vehicle 1 according to the present invention, it is not necessary to extend the wheelbase and mount a weight, which may reduce the load capacity or deteriorate the fuel consumption efficiency. No.

Further, according to the road-rail vehicle 1 according to the present invention, since the worker who handles the turntable becomes unnecessary, it is possible to eliminate the risk of the worker being involved when the vehicle body rotates.

Further, in the conventional rotation of the road-rail vehicle by the turntable, it was not possible to carry out the loading and unloading at the railroad crossing at the end, but according to the road-rail vehicle 1 according to the present invention, the loading at such a railroad crossing is performed. Lines and lines can be separated.

Next, in the road-rail vehicle 1 configured as described above, a switching method when switching from road traveling to track traveling will be described. 5 to 9 are diagrams for step by step explaining a method of switching the road-rail vehicle 1 according to the embodiment of the present invention. In the following explanation of switching of driving, switching from road driving to track driving will be described as an example, but switching from track driving to road driving can be realized by following the reverse procedure of this explanation. Can be done.

In FIG. 5, the road-rail vehicle 1 is run and stopped so that the ground contact point when the float 130 of the fulcrum 100 is lowered is arranged on the center line between the two rails. When adjusting the road-rail vehicle 1 so as to come to such a position while traveling on the road-rail vehicle 1, an under mirror normally equipped on the truck can be used. Further, the road-rail vehicle 1 may be equipped with a laser pointer or the like so as to make the above adjustments. Further, a camera for acquiring an image of the ground below the hydraulic cylinder 120 constituting the fulcrum 100 may be provided to perform the adjustment.

In the subsequent step shown in FIG. 6, the hydraulic cylinder 120 is set to be in the vertical direction and the horizontal direction, and the cylinder rod 125 is fed out. Along with this, the float 130 is grounded, and the front wheels of the tire wheels 7 are brought into a state of floating from the ground by further extending the cylinder rod 125.

Further, in the process shown in FIG. 6, the cylinder rods 175 of the hydraulic cylinders 170 attached to the left and right of the loading platform 5 are also controlled to be fed out. As a result, the left and right wheels 200 for rotating the vehicle body are grounded at the same time, and the cylinder rod 175 is extended, so that the rear wheels of the tire wheels 7 are in a state of floating from the ground.

According to the process of FIG. 6, the vehicle body of the road-rail vehicle 1 is supported by one fulcrum 100 and two vehicle body rotation wheels 200.

In the steps of FIGS. 7 to 8, a control command is issued to rotationally drive the left and right hydraulic motors 195, and the direction of the road-rail vehicle 1 is rotated by approximately 90 ° by the rotation of the two vehicle body rotation wheels 200. ..

Further, in the process of FIG. 8, control is performed so that the iron wheel 27 included in the road-rail vehicle 1 is lowered by the elevating mechanism. As a result, all four iron wheels 27 included in the road-rail vehicle 1 are mounted on the rails, and the four tire wheels 7 are in a state of floating from the ground. FIG. 1 is a side view of the state of FIG.

In the subsequent step shown in FIG. 9, the hydraulic cylinders 170 attached to the left and right sides of the loading platform 5 are controlled to contract the cylinder rod 175, and are housed on the side surfaces of the loading platform 5 of the left and right vehicle body rotating wheels 200. To do so. Further, the hydraulic cylinder 120 on the operation cabin 3 side controls the cylinder rod 125 to contract, and the float 130 is lifted from the ground. Further, when the cylinder rod 125 is completely housed in the base of the hydraulic cylinder 120, the longitudinal direction of the hydraulic cylinder 120 is subsequently set to the horizontal direction.

According to the method for switching the road-rail vehicle 1 according to the present invention as described above, since the worker who handles the turntable becomes unnecessary, it is possible to eliminate the risk of the worker being involved when the vehicle body rotates. In particular, if a drive source for driving the vehicle body rotation wheel 200 is provided, it is possible to eliminate the need for a worker required for the rotation of the road-rail vehicle.

Next, other embodiments of the present invention will be described. FIG. 10 is a diagram showing a road-rail vehicle 1 according to another embodiment of the present invention and a traveling switching method by the road-rail vehicle 1.

In the previous embodiment, the vehicle body rotation wheel 200 is arranged between the front wheel and the rear wheel of the tire wheel 7 on the loading platform portion 5. On the other hand, in the road-rail vehicle 1 according to another embodiment, the two vehicle body rotation wheels 200 are arranged on the rear side of the vehicle from the rear wheels of the tire wheels 7. Other configurations are the same as in the previous embodiment.

In such an embodiment, the distance between the fulcrum 100 and the vehicle body rotation wheel 200 can be made longer than in the case of the previous embodiment, and in the operation of rotating the direction of the road-rail vehicle 1 at the time of switching the traveling. There is an advantage that the stability of the car body can be increased.

As described above, the road-rail vehicle according to the present invention can be rotated by the wheels for rotating the vehicle body around the fulcrum, and can be loaded and unlined, so that it is not necessary to mount a conventional turntable. As a result, according to the road-rail vehicle according to the present invention, it is not necessary to extend the wheelbase and mount a weight, so that the load capacity does not decrease and the fuel consumption efficiency does not deteriorate. ..

Further, according to the road-rail vehicle according to the present invention, since a worker who handles the turntable is not required, it is possible to eliminate the risk of the worker being involved when the vehicle body rotates.

Further, in the conventional rotation of the road-rail vehicle by the turntable, it was not possible to carry out the loading and unloading at the railroad crossing at the end, but according to the road-rail vehicle according to the present invention, the loading at such a railroad crossing・ Derailment is possible.

Further, according to the road-rail vehicle switching method according to the present invention, since the worker who handles the turntable becomes unnecessary, it is possible to eliminate the risk of the worker being involved when the vehicle body rotates. In particular, if a drive source for driving the wheels for rotating the vehicle body is provided, it is possible to eliminate the need for a worker required for the rotation of the road-rail vehicle.

1 ... Road-rail vehicle 2 ... Base vehicle 3 ... Driving cabin 5 ... Loading platform 7 ... Tire wheels (wheels for road driving)
13 ... Exhaust gas purification device 15 ... Turntable 18 ... Weight 27 ... Iron wheels (wheels for track running)
28 ... Transmission wheel 100 ... Supporting point 120 ... Hydraulic cylinder 125 ... Cylinder rod 130 ... Float 140 ... Spherical joint 143 ... Rod side spherical joint 148 ... Float side spherical Joint 150 ... Chassis frame 153 ... Subframe 160 ... Bracket 170 ... Hydraulic cylinder 175 ... Cylinder rod 181 ... First support shaft 182 ... Second support shaft 183 ... Third support shaft 190 ・ ・ ・ Holder 195 ・ ・ ・ Hydraulic motor 200 ・ ・ ・ Wheels for rotating the vehicle body

Claims (5)

It is a road-rail vehicle that can switch between running on the road with tire wheels and running on the track with iron wheels.
A driving cabin with a fulcrum below and
It is composed of a loading platform portion provided with wheels for rotating a vehicle body having an axle perpendicular to the axle of the tire wheel and the axle of the iron wheel.
The road-rail vehicle is characterized in that the fulcrum includes a cylinder rod that expands and contracts, and a float that is provided at the tip of the cylinder rod and touches the ground. The road-rail vehicle according to claim 1, wherein the fulcrum includes a spherical joint. The road-rail vehicle according to claim 1 or 2, wherein the road-rail vehicle has a drive source for driving the wheels for rotating the vehicle body. The road-rail vehicle according to claim 3, wherein the drive source is a hydraulic motor. The road-rail vehicle according to any one of claims 1 to 4, wherein the vehicle body rotation wheels are arranged between the front wheels and the rear wheels of the tire wheels.

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