JP2001260875A - Slope travelling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slope travelling vehicle capable of safe move-down on a slope. SOLUTION: A pinion 2 is driven by a driving motor 6 and a pinion shaft 3 is provided with a disc brake 4. A driving shaft 7 of the driving motor is provided with a electromagnetic brake 8 to the end of which a collar 21 is fixed. A sprocket 26 mounted outside a cylindrical portion 21a of the collar via a bearing 25 is connected to a sprocket 12 mounted on a driving shaft 11 of a subsidiary driving motor 10 via a chain 30. When the driving motor 6 is in trouble, the sprocket 26 is connected to a flange portion 21b of the collar with a bolt 27 and braking force somewhat exceeding dead-weight falling force is given thereto by a disc brake and driving force somewhat greater than a difference between the braking force and the dead-weight falling force is given to the pinion by the subsidiary driving motor to cause the vehicle to be moved down at a lower speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inclined traveling vehicle which travels on a steep inclined surface by engaging a pinion with a rack rail, and more particularly to an emergency descent drive device.

[0002]

2. Description of the Related Art A vehicle running on a steep slope is often driven by engaging a pinion attached to the vehicle with a rack rail laid on the slope. FIG. 4 is a diagram showing a drive braking mechanism of a vehicle that travels by meshing a pinion with such a rack rail. The vehicle is mounted on a rack rail 15 that is laid in parallel with the traveling rail on which the traveling wheels of the vehicle travel. The attached pinion 2 is engaged.

The pinion 2 is driven by a drive motor 6 which operates by collecting external electric power via a speed reducer 5, and an electromagnetic brake 8 is attached to a drive shaft 7 of the drive motor 6 for braking. A disk brake 4 is attached to the pinion shaft 3 to which the pinion 2 is attached. When a vehicle having such a drive braking mechanism is running, the drive motor
When the drive force is lost due to a power failure of the motor 6 or the like, the vehicle can be stopped by braking the pinion shaft 3 with the disk brake 4. If the stopped location is not a repair location, the vehicle must be moved to the repair location, but the repair location is usually located below the sloping ground (Sakashita) and the vehicle is located above the sloping ground. If the vehicle breaks down (Sakagami), the vehicle must descend to the slope.

[0004] When the disc brake 4 is released to descend by its own weight, the vehicle starts to move by its own weight. However, if the slope is steep, the brakes are accelerated rapidly in a short time when the brakes are released. For example, even in a very short time, for example, about 0.1 second, the speed exceeds the safe speed of the brakes. Situation. In other words, it is extremely difficult to lower while controlling the speed of the carriage 1 during the brake release time, and it is difficult to lower safely.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a vehicle traveling on a slope having a drive braking device capable of safely descending the slope.

[0006]

According to the present invention, there is provided a sloped traveling vehicle in which a pinion mounted on a vehicle is engaged with a rack rail laid on the inclined surface to travel, and the pinion is connected to the rack rail. A main drive unit capable of driving the pinion engaged with the pinion shaft, a sub-drive unit capable of selectively driving the pinion, and a braking unit capable of braking the rotation of the pinion shaft. Usually, the driving is performed by rotating the pinion with the main driving means without giving the driving force to the pinion from the sub-driving means, and when the main driving means breaks down, the braking means applies the braking force to the pinion shaft. ,
An inclined traveling vehicle is provided, in which a driving force is applied to the pinion from the sub-drive means, and the pinion is rotationally driven by the sub-drive means to perform downhill traveling. When the main drive unit fails, the inclined traveling vehicle configured as described above applies a drive force to the pinion shaft from the sub drive unit while applying a braking force to the pinion shaft by the brake unit, and applies a drive force to the pinion shaft by the sub drive unit. Drive down the slope by rotating the pinion.

When the main driving means breaks down, the braking means is adjusted so as to slightly exceed the descent force due to its own weight and to provide a self-weighted descent-preventing braking force for preventing a descent due to its own weight, and the sub-driving means is provided with its own descent. By adjusting to give a driving force that slightly exceeds the difference between the slope prevention braking force and the downhill force due to its own weight,
The vehicle can descend at a low speed.

Preferably, a first transmission member is provided on the pinion shaft and always works with the drive shaft of the sub-drive means, and a second transmission member is installed on the pinion shaft and always works with the pinion shaft. And the second transmission member to apply a driving force of the auxiliary driving means to the pinion shaft. At this time, the first transmission member and the second transmission member are fitted via a bearing, and the first transmission member and the second transmission member are fastened with bolts, and the first transmission member and the second transmission member are connected to each other. The coupling can be performed, the drive shaft of the main drive unit can be always engaged with the pinion shaft, and the second transmission member can be coupled to the drive shaft of the main drive unit. The drive shaft of the means and the first transmission member can be engaged via a chain.

If the auxiliary driving means generates a driving force by the energy provided in the vehicle, and the braking means has a purely mechanical operating mechanism which can be operated without supplying external electric power, Even in the case of a power outage, the vehicle can go downhill. For example, the sub-drive means may be an electric motor that generates a driving force by a storage battery provided in the vehicle, or if the vehicle is used in the atmosphere, the sub-drive means may be an internal combustion engine. it can.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing a drive braking device 1 for a vehicle traveling on a slope according to the present invention. As in the prior art, a pinion 2 is driven by a drive motor 6 via a speed reducer 5. However, although the drive motor 6 is the same as the drive motor 6 of the prior art, the present invention also includes the sub drive motor 10, so that it is referred to as the main drive motor 6 for distinction. And
An electromagnetic brake 8 is attached to a drive shaft 7 of a drive motor 6 for braking, and a disk brake 4 that sandwiches a brake disc 4a between brake pads 4b is attached to a pinion shaft 3 on which the pinion 2 is attached. I have. However, unlike the prior art, the drive shaft 7 of the main drive motor 6 extends beyond the electromagnetic brake 8. A transmission mechanism 20 is attached to the end of the drive shaft 7 and selectively transmits the drive force of the sub drive motor 10, which is not available in the prior art, to the drive shaft 7 of the main drive motor 6 connected to the pinion 2. I can do it.

FIG. 2 is an enlarged view of the transmission mechanism 20 attached to the end of the drive shaft 7, and has a cylindrical portion 21a and a flange portion 21b at the end of the drive shaft 7. A collar 21 as a member is sandwiched between end plates 23 and fixed with bolts 24. A key 22 is inserted between the collar 21 and the drive shaft 7 so as not to rotate. A sprocket 26 as a first transmission member in the claims is rotatably attached to the outside of the cylindrical portion 21a of the collar 21 via a bearing 25. As will be described later, the sprocket 26 and the flange 21b of the collar 21 are fastened with bolts 27 when the main drive motor 6 breaks down. However, this fastening is not normally performed, and the sprocket 26 is fixed to the drive shaft 7. It can rotate freely with respect to the collar 21.

On the other hand, a sprocket 12 is attached to the drive shaft 11 of the sub drive motor 10, and the sprocket 12 and the transmission mechanism 2 attached to the end of the drive shaft 7.
The 0 sprocket 26 is connected via a chain 30.

FIG. 3 is a top view of a vehicle 100 having the above-described drive braking device 1, and FIG.
0 has four drive braking devices 1 per vehicle. Then, a total of four wheels 120 attached to both ends of the two axles 110 to which the driving force is not transmitted are connected to the traveling rails 15.
Run above zero.

Hereinafter, the control and operation of the driving brake device 1 configured as described above will be described. First, during normal operation, the main drive motor 6 is operated with the bolt 27 for fastening the sprocket 26 of the transmission mechanism 20 and the flange 21a of the collar 21 removed, and the pinion 2 is rotated by the drive force of the main drive motor 6. Uphill and downhill are performed by driving. At this time, the sprocket 26 is stopped with respect to the rotating drive shaft 7 because the sprocket 26 is connected to the sprocket 12 attached to the non-rotating sub-drive motor 10, but the bearing 25 is interposed therebetween. The rotation of the drive shaft 7 of the main drive motor 6 is not hindered.

On the other hand, while traveling on an inclined surface (slope), the vehicle 100 stopped by the desk brake 4 due to a failure of the main drive motor 6 or the like is moved to a failure repair place down the slope in the middle of the slope. explain. First, the sprocket 26 and the flange 21b of the collar 21 are fastened with bolts 27. Next, an appropriate number of the eight brake pads 4b provided in the vehicle 100 is released, and the remaining brake pads 4b are released.
The braking force of b is slightly stronger than the descent force of the vehicle 100 due to its own weight, and is adjusted to be balanced.

Next, the sub drive motor 10 is driven. The rotation torque of the auxiliary drive motor 10 slightly exceeds the difference between the braking torque supported by the desk brake 4 and the torque at which the vehicle 100 tends to descend by its own weight, and the brake pads 4b and the brake disks 4a of the disc brake 4 being operated.
The driving torque is small enough to start sliding. By rotating the pinion 2 with the auxiliary drive motor 10 in this manner, the vehicle 10
0 can be safely moved downhill at a very low speed, which is very slow as compared with the normal operation speed and the inertial force can be ignored.

Although the main drive motor 6 is generally an electric motor driven by electric power collected from an external electric wire, the sub drive motor 10 needs to operate even when a power failure occurs. For this purpose, for example, an electric motor which is provided with a storage battery (not shown) in the vehicle 100 and is operated by the electric power thereof is preferable, but may be an internal combustion engine if the vehicle 100 runs in the atmosphere. In addition, since the vehicle travels while braking with the disk brake 4, the disk brake 4 needs to have a mechanism that can operate even if the main drive motor 6 fails. For example, the disk brake 4 can operate even if a power failure occurs. Must be provided with a purely mechanical operating mechanism.

[0018]

According to the present invention, there is provided an inclined traveling vehicle that travels by engaging a pinion with a rack rail according to the present invention. Main driving means capable of driving the pinion by being engaged with a pinion shaft to which the pinion is connected, and a pinion. Auxiliary driving means that can selectively drive, a braking means capable of braking the rotation of the pinion shaft,
Usually, the main drive means rotates the pinion without applying a driving force to the pinion from the auxiliary drive means and travels, and when the main drive means fails, the braking means is used. While the braking force is applied to the pinion shaft, the driving force is applied to the pinion from the auxiliary driving means, and the pinion is rotationally driven by the auxiliary driving means to perform downhill traveling. Since the vehicle travels with the balance between the driving force of the driving means and the braking force, the traveling speed can be finely controlled. In particular, when the main drive means breaks down as in the second aspect of the present invention, the braking means adjusts so as to provide a self-weighted downhill-preventing braking force that slightly exceeds the downhill force due to its own weight and prevents a downhill due to its own weight. However, if the sub-drive means is adjusted so as to apply a driving force slightly exceeding the difference between its own weight downhill preventing braking force and the downhill force due to its own weight, the vehicle can descend at a low speed. In particular, as in the invention of claim 7, the sub-drive means generates a driving force by the energy provided in the vehicle, and the braking means is a purely mechanical operating mechanism which can be operated without supplying external power. Is provided, the vehicle can be lowered downhill even in the event of a power outage.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a drive braking device for a vehicle traveling on an inclined surface according to the present invention.

FIG. 2 is a partial detailed view of FIG.

FIG. 3 is a top view of the entire vehicle.

FIG. 4 is a configuration diagram of a drive braking device for a conventional vehicle traveling on a slope.

[Explanation of symbols]

 2 ... Pinion 3 ... Pinion shaft 4 ... Disc brake 4a ... Brake disc 4b ... Brake pad 6 ... Main drive motor 7 ... Drive shaft (of main drive motor) 8 ... Electromagnetic brake 10 ... Sub drive motor 11 ... (of sub drive motor) ) Drive shaft 12 ... Sprocket 20 ... Transmission mechanism 21 ... Collar 21a ... (Collar) cylindrical part 21b ... (Collar) flange part 25 ... Bearing 26 ... Sprocket 27 ... Bolt 30 ... Chain

 ──────────────────────────────────────────────────の Continued on the front page (72) Yoshiki Okubo 5007 Itozakicho, Mihara-shi, Hiroshima Mitsubishi Heavy Industries, Ltd. Mihara Works Co., Ltd. (72) Hideki Chihara 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi, Osaka (72) Inventor Izumi Sugiyama 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi, Osaka

Claims (9)

[Claims] 1. An inclined traveling vehicle that runs by engaging a pinion attached to a vehicle with a rack rail laid on an inclined surface, and driving the pinion by being engaged with a pinion shaft to which the pinion is coupled. Main driving means, a sub-driving means capable of selectively driving the pinion, and a braking means including a braking means capable of braking the rotation of the pinion shaft. When the main drive means is driven to rotate without driving force and the pinion is rotated, and the main drive means breaks down, the drive force is applied from the sub drive means to the pinion while the braking means applies a braking force to the pinion shaft. An inclined traveling vehicle, characterized in that the pinion is rotationally driven by a given sub-drive means to perform downhill traveling. 2. The braking device is adjusted to provide a self-weighted downhill-preventing braking force that slightly exceeds a downhill force due to its own weight when the main drive device fails, and the sub-drive device is configured to apply a braking force to prevent downhill due to its own weight. The slope traveling vehicle according to claim 1, wherein the vehicle is adjusted to give a driving force slightly exceeding a difference between a self-weighted downhill prevention braking force and a downhill force due to its own weight, and the vehicle descends at a slow speed. 3. A first transmission member installed on a pinion shaft and constantly operating with a drive shaft of a sub-drive means, and a second transmission member installed on the pinion shaft and always operating with the pinion shaft, the first transmission member comprising: The slope traveling vehicle according to claim 1, wherein the second transmission member is coupled to apply a driving force of the auxiliary driving means to the pinion shaft. 4. The first transmission member and the second transmission member are fitted via a bearing, and the first transmission member and the second transmission member are fastened by bolts, so that the first transmission member and the second transmission member are engaged. The slope traveling vehicle according to claim 3, wherein the vehicle travels on a slope. 5. The drive shaft according to claim 3, wherein the drive shaft of the main drive unit is always engaged with the pinion shaft, and the second transmission member is connected to the drive shaft of the main drive unit. On a slope. 6. A drive shaft of a sub-drive means and a first transmission member,
The slope traveling vehicle according to claim 3, wherein the vehicle is engaged via a chain. 7. The auxiliary driving means generates a driving force with energy provided in the vehicle, and the braking means includes a purely mechanical operating mechanism which can be operated without supplying external electric power.
The slope traveling vehicle according to claim 1, wherein: 8. The vehicle according to claim 7, wherein the auxiliary driving means is an electric motor that generates a driving force by a storage battery provided in the vehicle. 9. The vehicle according to claim 7, wherein the auxiliary driving means is an internal combustion engine provided in the vehicle.