JPH05662A - Leg device for magnetic levitation vehicle - Google Patents

Abstract

PURPOSE:To provide a constitution where applicability is available to either a supporting legs device to support low speed auxiliary wheels of a magnetic levitation vehicle, or a guide leg to guide the auxiliary wheels mechanically along a guideway side wall, the function essential for the supporting leg and the guide leg can be fully demonstrated, superior comfortability is available, the construction is simple and lightweight, an accommodating space is small and the maintenance is easy. CONSTITUTION:An axle of a guide wheel 6 is pivotaly supported at the tip of a fork arm 11 on one end, and a damper rod 31 of an elevating actuator 20 where a barrel 21 is supported by a truck through a bracket 7 is pivotally supported at the tip of a lever arm 12 on the other end. A lever 10 is pivotally supported by a truck through the bracket 7 at an axle part 13, and elevated/ lowered by the pushing action of the elevating actuator 20. Shocks to the guide wheel 6 are absorbed by a damper 30 through a lever arm 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to both a supporting leg for supporting an auxiliary wheel for low speed of a magnetically levitated vehicle and a guide leg for mechanically guiding along a side wall of a guideway. In this regard, the wheel is pivotally supported by the fork arm of the lever-like suspension member, and a retractable hoisting actuator in which a damper for buffer-supporting the other arm of the suspension member is arranged in series is provided to enable the wheel to be fully retracted. ,
The present invention relates to a leg device for a magnetic levitation vehicle, which has a simple structure, is lightweight, has a small storage space, and is easy to maintain.

[0002]

2. Description of the Related Art A magnetic levitation vehicle system is one in which ground coils for levitation and propulsion are arranged on the ground, and the propulsion coils are excited one after another to form a moving magnetic field to move an electromagnet on the vehicle side. In addition, when the electromagnet on the vehicle side moves, an induced current is generated in the levitation coil on the ground, which causes magnetic repulsion to levitate the vehicle.

Further, by using a superconducting coil, the induction-repulsion type magnetic levitation force generates sufficient buoyancy to support the weight of the vehicle only when it has a certain speed. Therefore, the vehicle is supported by auxiliary wheels in the low speed range. Need to support.

Therefore, the supporting leg device for the auxiliary wheel operates comfortably when stopped or in a required low speed range, is stored in the vehicle body when traveling at high speeds, and can be used immediately when necessary, and has an impact when the wheels are pulled out. There is a need for a structure that can absorb the.

Further, when the magnetically levitated vehicle is stationary or is traveling at a low speed and the lateral guidance due to the magnetism is not sufficient and the directionality is disturbed, the magnetically levitated vehicle rotates in contact with the side wall of the guideway for mechanical guidance instead. Guide leg devices are provided on both sides of the vehicle. This is also stored in the vehicle body when driving at high speed,
There is also a demand for a structure that can be used immediately when necessary and can absorb the shock when the wheels are pulled out.

As a supporting leg device for an auxiliary wheel of a magnetically levitated vehicle, Japanese Patent Laid-Open No. 63-212165 discloses a structure in which an auxiliary wheel is supported by a trailing arm and a damper is provided on this arm to absorb impact. Further, a lift cylinder is provided on the fulcrum side of the damper so that the damper and the arm can be pulled up to store the wheels.

[0007]

The above-mentioned leg mechanism for auxiliary wheels is composed of a lifting cylinder, a shock absorber, and a trailing arm. Since the mounting space is large, the number of parts and the number of mounting points are large. I needed time.

The present invention aims at a leg device applicable to both a supporting leg device for supporting a low speed auxiliary wheel of a magnetically levitated vehicle and a guide leg for mechanically guiding along a side wall of a guideway. With the aim of providing a leg device for a magnetically levitated vehicle, which has a structure that fully exhibits the original functions required for legs and guide legs, has an excellent riding comfort, has a simple structure, is lightweight, has a small storage space, and is easy to maintain. There is.

[0009]

SUMMARY OF THE INVENTION According to the present invention, one of levers having a pivot shaft pivotally supported on a vehicle serves as a fork arm to pivotally support a wheel, and a damper is arranged in series at the tip of the other arm and provided with an internal locking mechanism. A support leg or guide leg device for a magnetically levitated vehicle, characterized in that a lifting actuator of a mold is connected to and pivotally supported on the vehicle.

Further, according to the present invention, in the above construction, the operation of the internal lock mechanism is performed by the visual rod fixed in the fixed barrel direction in parallel with the outer peripheral surface of the telescopic side cylinder of the hoisting actuator and the pointer provided on the outer periphery of the barrel. A leg device for a magnetically levitated vehicle, which is provided with a lock check meter that is visible.

[0011]

The leg device for a magnetically levitated vehicle according to the present invention has only a lever having a fork arm, one of which supports a wheel, and a hoisting actuator, which pivotally supports the other arm of the lever. It can be applied to both a support leg for supporting the low speed auxiliary wheel and a guide leg for mechanically guiding along the side wall of the guideway.

Since the wheels can be easily and reliably stored up by pushing the lever by the hoisting actuator, there is an advantage that the storage space provided in the vehicle can be reduced, and the hoisting actuator contracts to pull the lever. The internal lock mechanism is activated when the wheel is out of the way, and then the dampers arranged in series with it are activated to exert excellent shock absorbing ability. In addition, the damper adopts a method that absorbs shock when pulling, so that the piston does not twist.

[0013]

【Example】

Embodiment 1 FIG. 1 and FIG. 2 are explanatory views showing the structure of a support leg device for a magnetically levitated vehicle according to the present invention. FIG. 1 is an explanatory view seen from the side of the vehicle, and FIG. 2 is an explanatory view seen from the rear of the vehicle. is there. FIG. 3 is a vertical cross-sectional explanatory view of a hoisting actuator having an internal lock mechanism. The supporting leg device according to the present invention comprises a hoisting actuator 20 having an internal lock mechanism in which a lever 10 and a damper 30 are arranged in series.

The lever 10 is pivotally supported by the vehicle at the pivotal portion 13 via the bracket 3, and is used to transmit the lift and fork arm 11 for pivotally supporting the axle 2 of the auxiliary wheel 1 and the impact to the wheel 1. And the lever arm 12. Further, the barrel 2 is attached to the tip of the lever arm 12.
A damper rod 31 of a hoisting actuator 20 is pivotally supported on the vehicle via a bracket 4.

The hoisting actuator 20 has a piston cylinder 24 in which a hoisting rod 25 is fitted in a barrel 21 pivotally supported by the vehicle. The other end of the piston cylinder 24 forms a damper cylinder 30, and a damper rod 31 is fitted therein.

A piston head 26 incorporating a lock segment 27 is mounted on the tip of the hoisting rod 25 of the piston cylinder 24, and is inserted into a sleeve-shaped lock guide 22 fitted in the barrel 21 and fixed by an end cap 23. It is configured to face the lock piston 28 whose stroke is regulated at the end of the lock guide 22 and the inner end of the barrel 21 and which is urged by the spring 29, and the required pressure oil is introduced before and after the piston head 26.

Inside the damper cylinder 30 of the piston cylinder 24, a damper rod 31 having a piston head 32 mounted at its tip and having a free high pressure piston 34 as an exterior is inserted and sealed with an end cap 35. A free piston 33 is inserted in the damper rod 31.

The high pressure piston 34 and the free piston 33 are pressed by compressed air, and the piston head 32
Between the high pressure piston 34 and the orifice 36
It is a configuration that opposes the pressure oil sealed inside the damper rod 31 that communicates with.

In the support leg device of the present invention having the above-described structure, in order to store the wheel 1, the hoisting rod 25 is extended so that the damper rod 31 enters the damper cylinder 30 and bottom-projects to the lever. The arm 12 is pushed to retract the fork arm 11.

When the hoisting rod 25 is contracted, the damper rod 31 is also contracted, the lever arm 12 is pulled, the fork arm 11 is pushed out, and the lock segment 27 is fitted in the hole of the lock guide 22. It is fixed by the lock piston 28 to be in a locked state, and then the damper rod 31 extends for a required length and the wheel 1 comes into contact with the ground, and an input such as vertical movement of the wheel 1 is transmitted to the damper rod 31 via the lever 10. Supports cushioning and exhibits excellent shock absorption capacity.

Further, since the lever 10 is used as the main suspension body of the supporting leg device of the present invention, the weight of the entire device can be reduced by selecting the material thereof from, for example, aluminum alloy or titanium alloy. .

The barrel 21 and the damper cylinder 30 of the hoisting actuator 20 used in the supporting leg device of the present invention.
Between the damper cylinder 30 and the damper rod 31, as shown in FIG. 3, in order to protect the piston rod or the like which is a functional part, metal bellows 37, 38 capable of sealing the operating range of the hoisting rod 25 and the damper rod 31 as shown in FIG. Put on,
It prevents the weather boot from deteriorating due to wind and rain and the damage to the functional parts due to foreign matter, which were the drawbacks of conventional cloth boots. Therefore, the reliability of the supporting leg device is increased.

Further, a visual rod 50 and a ring band 51 are arranged in parallel with the outer peripheral surface of a damper cylinder 30 which is a telescopic side cylinder of the hoisting actuator 20 in the barrel 21 direction.
Then, the pointer 53 is fixed to the required position on the outer periphery of the barrel 21 with the ring band 52. The internal lock mechanism of the hoisting actuator 20 is activated by the relative positional relationship between the scale marked on the visual rod 50 and the pointer 53. A lock check meter is provided to make it possible to check the operating state of the hoisting actuator 20 very easily.

Embodiment 2 The supporting leg device according to the present invention of the embodiment 1 elevates and lowers the auxiliary wheel 1 to the subgrade 5, but in the case of the guide leg device shown in FIG. 4, the magnetic levitation vehicle has a small magnetic guiding force. In this case, the guide wheel 6 is mounted on the side of the bogie of the vehicle for mechanical guidance instead of the magnetic force, and the guide wheel 6 is horizontal with respect to the guideway side wall 8 that is erected by using the same configuration as in the first embodiment. It comes out in the direction and comes into contact with it, guides and absorbs impact, and is stored and stored in the trolley when unnecessary.

More specifically, the lever 10 is horizontally arranged and is pivotally supported by the pivotal portion 13 of the lever via a bracket.
Fork arm 1 for pivotally supporting the axle 2 of the guide wheel 6.
1 and a lever arm 12 for transmitting the lift and the impact of the guide wheel 6 and the like. Further, a damper rod 31 of a hoisting actuator 20 that pivotally supports a barrel 21 on a vehicle bogie via a bracket 7 is pivotally supported at the tip of the lever arm 12. Therefore, the action and effect of the lever 10 pivotally supporting the guide wheel 6 and the hoisting actuator 20 connected thereto are the same as those in the first embodiment.

In FIG. 4, there is arranged a stopper wheel device in which a stopper wheel 42 is rotatably supported by a fork 41 at the tip of a bracket 40 fixed to the vehicle straddling the pivot portion 13 via a vibration-proof material. The example shown is the stopper wheel 4
Part of 2 is always protruding from the bogie. This is because if an abnormality occurs in the magnet while the vehicle is flying at high speed, the magnet loses its magnetic force in an instant, so that the part falls and is pressed by the magnet on the opposite side and pressed against the guideway side wall 8.
At this time, in order to protect the vehicle, the stopper wheel 42 comes into contact with the side wall 8 to rotate and guide left and right until the vehicle stops.

Further, a claw portion 61 is projected on the required outer peripheral surface of the damper cylinder 30 of the hoisting actuator 20, and a limit switch 60 is arranged at the tip of the barrel 21 to hoist the piston cylinder 24 inside the barrel 21. When the rod 25 is fitted and the internal lock is completed, the claw portion 61 comes into contact with the limit switch 60 to notify the completion of the internal lock.

[0028]

As described above, the present invention has only a lever including a fork arm that pivotally supports a wheel and a lever arm that pivotally supports a hoisting actuator, and has a simple structure with very few suspension members. Therefore, the present invention can be applied to both the support leg of the auxiliary wheel for low speed or the guide leg that comes into contact with the side wall of the guideway, and can be maintenance-free if all the bearing portions have a non-lubricated shaft structure. Since the wheels are retracted simply by pushing the lever of the hoisting actuator, there is an advantage that the storage space provided in the vehicle can be reduced, and the damper installed in series with the hoisting actuator operates to provide excellent shock absorption capacity. Demonstrate. In addition, there are few attachment points on the vehicle side, it is easy to attach and detach, and since metal bellows are used to protect the lifting actuator and the piston rod of the damper, deterioration due to wind and rain and damage to the function part due to foreign matter are prevented, and operation reliability is improved. There is an advantage that the property becomes high.

[Brief description of drawings]

FIG. 1 is an explanatory view of a supporting leg device for a magnetically levitated vehicle according to the present invention as seen from a vehicle side surface.

FIG. 2 is an explanatory view of a support leg device for a magnetically levitated vehicle according to the present invention as viewed from the rear of the vehicle.

FIG. 3 is a vertical cross-sectional explanatory view of a hoisting actuator having a damper of a support leg device according to the present invention.

FIG. 4 is an explanatory view showing a guide leg device for a magnetically levitated vehicle according to the present invention as viewed from the top surface of the vehicle. 1 Wheel 2 Axle 3, 7 Bracket 4 Roadbed 6 Guide Wheel 8 Guideway Side Wall 10 Lever 11 Fork Arm 12 Lever Arm 13 Axis 20 Lifting Actuator 21 Barrel 22 Lock Guide 23 End Cap 24 Piston Cylinder 25 Lifting Rod 26 Piston Head 27 Lock segment 28 Lock piston 29 Spring 30 Damper cylinder 31 Damper rod 32 Piston head 33 Free piston 34 High pressure piston 35 End cap 36 Orifice 37, 38 Metal bellows 40 Bracket 41 Fork 42 Stopper wheel 50 Visual rod 51, 52 Ring band 53 pointer

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[Procedure amendment]

[Submission date] August 2, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Continued front page    (72) Inventor Kazuhiro Oda             38-8, Hikarimachi, Kokubunji, Tokyo 38 Foundation             Corporate Railway Technical Research Institute (72) Inventor Hideyuki Takizawa             38-8, Hikarimachi, Kokubunji, Tokyo 38 Foundation             Corporate Railway Technical Research Institute

Claims (2)

[Claims] 1. One of the levers, which pivotally supports a pivot on a vehicle, serves as a fork arm to pivotally support a wheel, and the other arm has a tip at the tip thereof.
A leg device for a magnetically levitated vehicle, wherein dampers are arranged in series and a telescopic lifting actuator having an internal lock mechanism is connected to the vehicle to pivotally support the vehicle. 2. A lock confirmation meter which enables the operation of an internal lock mechanism to be visually confirmed by a visual rod fixed in the direction of a fixed barrel parallel to the outer peripheral surface of a telescopic side cylinder of a hoisting actuator and a pointer provided on the outer periphery of the barrel. The leg device for a magnetically levitated vehicle according to claim 1, wherein the leg device is provided.