JPH10175413A - Track land vehicle provided with insulating guide steel wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a track land vehicle provided with an insulating guide steel wheel formed so that a current flowing in a rail can be prevented from short-circuiting and bridging by a simple structure, in the track land vehicle provided with two guide steel wheels. SOLUTION: This track land vehicle is formed such that two wheels in one side, a pair of right/left guide steel wheels 2 are liftably mounted before/behind a track main unit, in a condition lifting this guide steel wheel 2, running can be made on a road, the guide steel wheel is lowered down to be engaged with a rail, also a front/rear wheel tire is loaded on the rail, so that running can be performed on the track. Here, between a peripheral part of the guide steel wheel and a shaft part 10c thereof, an insulating material 14 is cylindrically provided. In the guide steel wheel, a current carrying device is provided, also it is connected to a changeover switch provided in the track main unit, by this changeover switch, on/off operation of the current carrying device can be selected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track-and-land vehicle (track running truck) adapted to run on ordinary roads and railroad rails.

[0002]

2. Description of the Related Art Rail-to-rail vehicles used for railway-related work are conventionally known, which are equipped with a traction device, a lift device, and the like, for example, for pulling a passenger car, constructing an overhead line, cleaning a tunnel wall, a traffic light, This is for maintenance of the indicator light, etc., and guide iron wheels are attached to the front and rear of the work truck body so as to be able to move up and down. The guide iron wheel is lowered on a nearby railroad crossing to engage the rail, and the tires on the front and rear of the truck body are driven on the rail so that they can travel on the track (for example, in the case of actual 54-143508, JP-A-6-48698).

[0003]

There are two types of guide iron wheels in the above-mentioned railway land vehicle: one side has one wheel and the other has two wheels.
In the case of two wheels, it has good followability to the curve and branch point of the rail and is excellent in stability, but the rail is used to confirm the position of the train, or to operate a traffic light or a crossing barrier at a railroad crossing. Are flowing, and there is a problem that these currents are short-circuited or bridged.

[0004] That is, unlike a train operation, a track-and-land vehicle is determined to be self-managed for safety confirmation, and when traveling on a track, stops temporarily before taking off and confirms safety before passing. Since the road side of the railroad crossing has priority, it is inconvenient to short-circuit the left and right rails or to bridge the front and rear rails across a seam as in train operation.

[0005] As a short-circuit preventing measure, an insulating material is conventionally provided in the middle of the axle connecting the left and right guide iron wheels. However, no bridging preventive measure has been taken, which has been a problem. In the case of a single guide iron wheel, the problem of bridging does not occur because it passes through the joint of the rail where the insulating material is interposed instantaneously, but in the case of two wheels, the front and rear iron rings cross the joint. Bridge prevention measures are needed.

The present invention has been made in view of such a conventional situation, and is a railway land vehicle having two guide iron wheels, which can prevent short-circuiting and bridging of current flowing through rails with a simple structure. It is an object of the present invention to provide a railway land vehicle provided with such an insulated guide iron wheel.

[0007]

As a technical means for solving the above-mentioned problems, the present invention relates to a two-wheeled guide iron wheel having a pair of left and right guide iron wheels mounted on a truck body so as to be able to move up and down. In the case of a track-and-land vehicle capable of running on a road in a state where the rails are raised, lowering the guide iron wheels to engage with the rails, and placing the front and rear wheel tires on the rails and running on the track, the outer peripheral portion of the guide iron wheels The gist of the invention is that an insulating material is provided in a cylindrical shape between the shaft and the shaft portion of the guide iron wheel. The gist of the present invention is that an energizing device is disposed on the guide iron wheel, and a switching switch provided on the truck body is connected to the energizing device so that ON / OFF of the energizing device can be selected by the switching switch.

[0008]

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a truck body, a pair of left and right front guide iron wheels 2 each having two wheels on one side in front of a front wheel tire 1a, and a pair of left and right front guide iron wheels 2 on the rear side of a rear wheel tire 1b. The rear guide iron wheels 3 are respectively mounted so as to be able to ascend and descend, necessary work equipment 4 is mounted on the carrier, and a traction device 5 is mounted on the rear.

Front guide iron wheel 2 and rear guide iron wheel 3
1 can travel on the road in the same manner as a normal truck while being pulled up and held as shown by the imaginary line in FIG. 1 and pushed down and engaged with the rail 6 as shown by the solid line. The vehicle can run on the rail 6. At this time, the front wheel tire 1a and the rear wheel tire 1b of the truck body 1 abut on the rail 6 as shown in FIG. 2 and run by driving these tires (four-wheel drive).

As shown in FIGS. 3 and 4, the truck body 1 is pivotally supported by pins 7a so that a support frame 8 can rotate vertically with respect to a bracket 7 attached to an axle 1c of a front wheel tire. A stepped shaft 9 (see FIG. 2) is fixed to the bifurcated tip 8a of the support frame 8 in the left-right direction, and a biaxial frame 10 is pivotally supported on both ends of the stepped shaft 9 via pins 10a. The guide iron wheel 2 is rotatably mounted on the biaxial frame 10, and further, the mounting portion 1 behind the biaxial frame 10 is mounted.
Both ends of the connecting rod 11 are pivotally supported at 0b. Therefore, the biaxial frame 10 to which the front guide iron wheel 2 is attached can be rotated left and right around the pin 10a as shown in FIG. 6, whereby one pair of left and right front guide iron wheels 2 Can move at the same time in the left-right direction via the connecting rod 11 and can smoothly follow the curve of the rail 6.

As shown in FIG. 5, upper ends of a pair of left and right hydraulic cylinders 13 are pivotally supported by a pin 12a via a bracket 12 at the front of a chassis 1d of the truck body 1. 13 rods 13a
Are pivotally supported on the stepped shaft 9 by pins 9a. Therefore, when the pair of left and right cylinders 13 are simultaneously operated to move the rod 13a forward and backward, as shown in FIG.
When the rod 13a is retracted, the support frame 8 is pulled up as shown by the imaginary line to hold the front guide iron wheel 2, while the rod 13a is moved forward. Then, the guide frame 2 can be engaged with the rail 6 by pressing down the support frame 8 as shown by the solid line. Since the rear guide iron wheel 3 has the same configuration, the description is omitted.

FIG. 7 shows the internal structure of the front guide iron wheel 2. A shaft hole 2 a is formed inside the guide iron wheel 2.
An insulating material 14 is fitted in a cylindrical shape along the inner peripheral surface of the shaft hole 2a.
Two bearings 15 are mounted between the shaft 10c and the shaft member 10c, and a lid member 16 made of an insulating material is fixed to the insulating material 14 by a plurality of bolts 17 at the open end of the shaft hole 2a. Although the rear guide iron wheel 3 has the same insulating structure, its description is omitted.

The track-and-land vehicle according to the present invention configured as described above is used, for example, for towing a passenger car as shown in FIG. 9, and at this time, the front guide iron wheel 2 and the rear guide iron wheel 3 are pushed down to make the rail 6 and connected to the passenger car via the rear traction device 5, the front tire 1a and the rear tire 1b
Is driven on the rail 6 by four-wheel drive.

The engine of the truck body 1 is, for example, a diesel engine equipped with a four-cylinder water-cooled turbocharger and has a horsepower of 130 horsepower or more, and has a traction capacity of about 400 tons at maximum on flat ground. It is preferable that the brake is equipped with a parking brake in addition to the HST brake and the hydraulic two-system brake, and that a manual pump for a track running device is provided as standard for emergency use.

To go to the place to be towed, the front guide iron wheel 2 and the rear guide iron wheel 3 are pulled up and stored in the same manner as in the prior art, the vehicle is driven on the road by the front tire 1a and the rear tire 1b, and the takeoff near the site is taken. Transfer from the road to the orbit. As shown in FIG. 2, a rear-view mirror 1e for traveling on a road and a rear-view mirror 1f for traveling on a track that protrude largely sideways are attached to the truck body 1. Rotate the support stay 1g toward the door so that it does not protrude sideways. In the front wheel tire 1a and the rear wheel tire 1b of the truck body 1, the interval between the left and right tires is set in advance in consideration of the width of the track rail (wide gauge, narrow gauge).

During the pulling of the passenger car, the current flowing through the rail 6 is short-circuited (between the right and left rails) or bridged (between the front and rear rails sandwiching a joint), unlike a normal train operation. Never. As described above, since the front guide iron wheel 2 and the rear guide iron wheel 3 are all insulated by the insulating material 14, even if the outer peripheral portion of the guide iron wheel 2 is energized from the rail 6, the current is generated by the biaxial frame 10. Shaft 1
0c, no current flows through the connecting rods 11 connecting the left and right biaxial frames 10, so that a short circuit between the left and right rails can be prevented, and a current flows through the biaxial frame 10 supporting the two guide iron wheels 2 on one side. Since no flow occurs and the front and rear guide iron wheels do not conduct electricity to each other, bridging can also be prevented. Therefore, there is no operation of a traffic light or a crossing barrier at a railroad crossing. The work content of the track-and-land vehicle can be not only towing but also traveling on the track alone as in the past, and performing various works such as overhead wire construction, cleaning of tunnel wall surfaces, maintenance of traffic signals and indicator lights, and the like.

However, in the daytime and when the vehicle passes through a city area where terminal traffic and road traffic are frequent, it may be better to operate a traffic light, a crossing barrier at a railroad crossing, or the like as in normal train operation. . The current supply device 18 shown in FIG. 8 is adapted to cope with such a case.

The energizing device 18 fixes a frame 18a made of a conductive material to a front side of the biaxial frame 10 (for example, a front mounting portion 10d).
A spring plate piece 18b formed of a conductive material is symmetrically attached before and after the step, and a conductive block 18c is fixed to a tip end of the spring plate piece 18b to make contact with a front guide iron wheel in the front guide iron wheel 2. Further, the upper end of the arm 18d is pivotally supported on the frame 18a, and the lower end is pivotally supported on the conductive block 18c. The spring 18e is contracted between the intermediate portion of the arm 18d and the lower end of the frame 18a. The two conductive blocks 18c are brought into contact with the guide iron wheel 2 at an appropriate pressure.

The energizing device 18 is provided not only on one side of the front guide iron wheel 2 but also on both left and right sides, and a lead wire (not shown).
And a switch (not shown) provided on the driver's seat of the truck body 1 via the switch. The switch turns on and off the energizing device 18, that is, energizes and de-energizes between the guide iron wheel 2 and the biaxial frame 10. To be able to switch.

When it is desired to short-circuit the left and right rails 6, it is sufficient to turn on the changeover switch.
The guide iron wheel 2 and the biaxial frame 10 can be energized via the connection 8 and short-circuited via the connecting rod 11 connecting the left and right biaxial frames 10. As a result, it is possible to confirm the current position at the time of traveling and to operate a traffic signal, a crossing barrier at a railroad crossing, and the like in the same manner as a normal train operation. In other words, the changeover switch can be turned on and off according to the situation at the time of traveling, and a case where a short circuit is necessary and a case where a short circuit is unnecessary can be selected.

Further, the power supply device 18 can also serve as a ground for the overhead line. Various operations using a track-and-land vehicle are usually performed after the overhead wire current is stopped. However, if current flows through the overhead wire, an electric shock accident may occur. Therefore, if a pantograph-shaped or telescopic rod-shaped conductive member (not shown) that contacts the overhead wire is provided on the rail vehicle and connected to the energizing device 18 with a lead wire, a current flows through the overhead wire. The current is grounded from the conductive member to the rail 6 via the energizing device 18 and the outer peripheral portion of the front guide iron wheel 2. The large current flowing through the rail 6 instantaneously causes the breaker of the substation to fall, thereby stopping the power supply to the overhead line.

[0022]

As described above, according to the present invention,
Insulation material is provided inside the one-sided two-wheel guide iron wheel of a rail-land vehicle, so that short-circuiting of the left and right rails and bridging of the front and rear rails sandwiching the seam can be prevented, thereby making it possible to prevent traffic signals and breakers at level crossings, etc. It has the effect of running on the track without affecting the operation. Also, by providing an energizing device on the guide iron wheel and providing a changeover switch for turning the energizing device ON and OFF on the truck main body, it is possible to select whether short-circuit is necessary or not, and to select a desired track traveling of the track-and-land vehicle. This makes it possible to deal with the situation flexibly.

[Brief description of the drawings]

FIG. 1 is a side view showing a track traveling state of a track-and-land vehicle according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view showing a vertically moving state of a front guide iron wheel.

FIG. 4 is a top view of the same.

FIG. 5 is a front view of the same.

FIG. 6 is a top view showing two wheels on one side of a front guide iron wheel.

FIG. 7 is a sectional view showing an internal structure of a guide iron wheel.

FIG. 8 is an explanatory diagram showing a state in which an energizing device is disposed above a guide iron wheel.

FIG. 9 is an explanatory view showing a state in which a passenger car is pulled by a rail-land vehicle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Truck body 1a ... Front wheel tire 1b ... Rear wheel tire 1c ... Axle 1d ... Chassis 1e, 1f ... Rearview mirror 1g
... Support stay 2 ... Front guide iron wheel 2a ... Shaft hole 3 ... Rear guide iron wheel 4 ... Working equipment 5 ... Traction device 6 ... Rail 7 ... Bracket 7a ... Pin 8 ... Support frame 8a ... Two forked tip 9 ... Stepped shaft 9a: Pin 10: Biaxial frame 10a: Pin 10b: Mounting portion 10c: Shaft
10d mounting part 11 connecting rod 12 bracket 12a pin 13 cylinder 13a rod 14 insulating material 15 bearing 16 lid 17 bolt 18 energizing device 18a frame 18b spring plate piece 18c conductive Block 18d: Arm 18e: Spring

Claims (2)

[Claims] 1. A pair of left and right guide iron wheels are attached to the front and rear of the truck body so as to be able to move up and down, and can travel on a road with the guide iron wheels raised, and lower the guide iron wheels to engage with the rails. In addition, in a railway land vehicle in which the front and rear wheel tires can be run on a track by being mounted on rails, an insulating material is provided in a cylindrical shape between an outer peripheral portion of the guide iron wheel and a shaft portion of the guide iron wheel. A rail / land vehicle equipped with an insulated guide iron wheel. 2. A power supply device is provided on a guide iron wheel.
This energizing device is connected to a changeover switch provided on the truck body.
The rail-land vehicle provided with the insulated guide iron wheel according to claim 1, wherein N or OFF can be selected.