JPH06510718A - Device for controlling the lateral movement of the vehicle body - Google Patents

Abstract

A railway vehicle has a passenger carrying body (10) mounted on a bogie comprising a frame (12) and wheelsets (14). To accommodate lateral movement of the body (10) relative to the bogie frame (12), subsequent to the movement accommodated by conventional shear rubber mounts (16), a bump stop arrangement is provided towards each end of the vehicle. Each arrangement is mounted on a body part and has a pair of piston and cylinder assemblies providing rubber abutments (18) towards respective sides of the body part for engagement with the bogie frame (12). The spaces in each cylinder (24) on respective sides of the piston (22) communicate with respective fluid accumulators (28, 30), a valve controller (32) monitoring lateral movement of the vehicle body (10), and controlling movement of fluid supply between the cylinders and the accumulators. Movement of a respective abutment (18) into contact with the bogie frame (12) only when necessary, and subsequent continuous adjustment of the resistance provided by the abutment (18), prevents significant increase in the dynamic stiffness of the bump stop arrangement and mitigates unwelcome impact between the body (10) and the bogie frame (12), resulting in a relatively smoother ride for passengers.

Description

[Detailed description of the invention] for the sake of speaking (Field of invention) The present invention relates to a device for use in controlling the relative motion of interconnected vehicle bodies; More specifically, the present invention relates to control of a lateral suspension system of a vehicle chassis.

(Explanation of prior art) When a tracked vehicle moves around a curve on the track, centrifugal force causes the vehicle body to move laterally on the bogie. Move to. Traditionally, anti-swaying devices were installed on the bogie to allow the car body to move laterally to each side of the bogie. This is engaged with the vehicle body part when moving. These shakers are generally elastic A flexible material such as rubber is attached to a metal mount. car body first The lateral movement during the period is absorbed by the secondary suspension system members, but the vehicle body collides with the sway stop. When engaged, the mechanical rigidity of the rubber gradually increases as the amount of movement of the vehicle body increases, and the Eventually, the flexibility of the car body becomes almost negligible.Normally, before the car body engages with the rubber, It moves laterally through the nominal gap area and then engages the metal part of the rocker. Shaking stop As the mechanical stiffness of the eye rubber increases, the amount of vibration transferred from the bogie to the car body increases, causing Customer discomfort increases. Impacts with metal cause the greatest discomfort to passengers.

(Structure of the invention) According to the invention, there is provided a device for controlling lateral excursions of interconnected vehicle bodies, comprising: , An actuator 1'' whose outer portion provides a movable abutment portion, The abutment portion is in a first position in use in which it engages with a vehicle body portion and is spaced apart from the vehicle body portion. an actuator movable between a second position when not in use; Actuator installation for attaching the actuator means to one of the vehicle bodies means and a fluid reservoir for storing fluid and moving this fluid into and out of said actuator means; a loading means; monitoring relative deflection of the vehicle body between said fluid accumulation means and said actuator means; controlling the inflow and outflow of fluid at the abutment portion and selecting the abutment portion in a first position for engagement with the body portion; and when the vehicle body is operatively coupled by engagement with the abutment portion. fluid monitoring means for continuously adjusting the resistance to relative excursions of the vehicle body; An apparatus is provided comprising:

Preferably, the actuator means includes a piston and a cylinder, and the abutting portion includes a piston and a cylinder. Attached to the outer end of the piston rod of the stone. Impact area provides low friction surface It may be constructed of an elastic, flexible material, such as rubber.

Preferably the fluid storage means comprises a first hydraulic fluid providing hydraulic fluid to one side of the piston. It also includes an accumulator and a second hydraulic fluid accumulator that provides hydraulic fluid to the other side of the piston.

The fluid monitoring means may be a control valve. This control valve is operated after the impact part engages with the vehicle body part. In addition, the movement of the fluid when a relative deviation occurs is limited to a certain parameter range. It can be designed to have such characteristics.

The invention also provides a vehicle with interconnected bodies. interconnected one side Both bodies contain one frame assembly, and the other body contains only one frame assembly. attached to the system assembly. Also, the vehicle has the frame assembly of the other vehicle body. Also included are any of the aforementioned devices for controlling lateral movement with respect to.

The invention further provides a method for controlling lateral excursions of interconnected vehicles; The method includes the steps of monitoring relative motion of the vehicle body; directing fluid into and out of the fluid storage means and the actuator means; during the fluid movement phase, the outer portion of said actuator means has a movable abutment portion. a fluid transfer step comprising: A fluid is used to connect the abutment to one vehicle body with respect to another vehicle body that can be engaged with the other vehicle body. selectively moving toward and away from the portion; adjusting the quasi-static resistance to movement when engaged with the body part. It will be done.

Embodiments of the invention will now be described, by way of example only, with reference to the drawings.

FIG. 1 is a schematic partial view of a vehicle in which a lateral suspension system is disposed between the vehicle body and the bogie. Ru.

FIG. 2 is a schematic illustration of the transverse suspension system of FIG. 1.

(Explanation of specific example) Referring to the drawings, the tracked vehicle includes a passenger car 10, and the passenger car 10 has a frame 12 and a passenger car 10. It is mounted on a bogie having wheels 14 and wheels 14. Early stage of passenger car 10 lateral movement with respect to the arm 12, for example due to the influence of centrifugal force while traveling around a curve in the track. Lateral movement of the passenger car is accommodated by a suspension arrangement including shear rubber mounts 16. be accepted.

Anti-sway arrangement for accommodating continuous lateral movement of the passenger car 10 relative to the frame 12 A configuration is provided at each end of the coach. Each anti-sway array configuration includes a cylinder 24; A hydraulic piston 22 movable inside the cylinder is included, and the piston rod 22 is movable inside the cylinder. The outer end of the door 20 is adapted to provide an abutment 18. The collision part 18 is an example It has the form of a low shear stiffness member made of rubber, and in the anti-sway arrangement configuration, a pair of The abutting portions 18 are located in a portion extending downwardly of the passenger car 10, and these abutting portions 18 18 is operatively associated with an upwardly extending portion 26 on the frame 12 of the bogie. Ru.

Each cylinder 2 for the end of the piston 22 remote from the piston rod 20 4 communicates with the hydraulic fluid reservoir 28, while the other inner space of each cylinder 24 communicates with the hydraulic fluid reservoir 28. The side space communicates with the hydraulic fluid accumulator 30 . Cylinder 24 and hydraulic fluid accumulator 2 8.30 is preferably positioned on the passenger car lo.

Direction of hydraulic fluid from the circuit defined by cylinder 24 and hydraulic fluid accumulator 28. The supply thereto is effected by a valve control body 32 mounted on the passenger car 10. This valve control The body 32 is designed to monitor the lateral movement of the passenger car 10. The valve control body 32 is It is operatively coupled to hydraulic fluid reservoir 28 in any suitable manner. Hydraulic fluid accumulator 30 provides a hydraulic reaction spring force to the piston 22.

In use, the valve control body 32 operates based on the centrifugal force of the passenger car 10 when traveling on a curve on the track Upon sensing the onset of lateral movement, additional hydraulic fluid is applied to one of each hydraulic fluid reservoir 28 and and the cylinder 24 to the end of the piston 22 far from the piston rod 20. This causes the piston rod 20 to be further pushed out of the cylinder 24. Each impactor 18 moves towards a respective part 26 of the bogie. The impacting body 18 moves smoothly and comes into contact with portion 26. The impacting body 18 is continuously pressed against the portion 26 and to reduce its lateral movement as far as possible. Hydraulic fluid accumulator 28 The continuity between the frame 12 and the vehicle body 10 (sufficient to allow lateral movement at high frequencies) provides considerable flexibility, but significantly increases the mechanical stiffness of the anti-sway array configuration. There is no need to increase it significantly. This is because, due to feedback to the valve control body 32, Controlling the transfer of hydraulic fluid to and from the hydraulic fluid reservoir 28 and cylinder 24 This is because this can be achieved by the anti-sway arrangement configuration. Due to its characteristics, the valve control body 32 The movement of the impactor 18 is controlled by moving the hydraulic fluid in the passage within specific parameters. and adjust the force it applies and the transmission of vibrations from the bogie to the passenger car.

Each pair of anti-sway array configurations is configured such that if the passenger car begins to move laterally in that direction, The control of the anti-sway arrangement is effective only when the vehicle is traveling on a curve. It is. By preventing the anti-sway arrangement from becoming mechanically rigid, Vibration transmission forces to the passenger cars are minimized and the passenger cars are connected to the metal parts of each anti-sway arrangement. Unwanted collisions between passenger cars and bogies are avoided by minimizing movement prior to engagement. is reduced, and the riding comfort of the vehicle becomes much smoother.

Various modifications may be made without departing from the invention. A row arrangement can be provided on the bogie, each part of which can be adapted to engage a passenger car. Also, times Control of the movement of hydraulic fluid in the passageway is performed using a method other than a mechanical control valve, such as a microcombi valve. It can be implemented by sensors, accelerometers, and other predictable methods.

Q - Ko International Search Report ρCT/GB 92100926 International Search Report

Claims (8)

[Claims] 1. A device for controlling lateral excursions of interconnected vehicle bodies, the device comprising: actuator means, the outer portion of which provides a movable abutment; The abutting portion has a first position in use in which it engages with a vehicle body part and a non-contact position in which it is spaced apart from said vehicle body part. actuator means movable between a second position H in use; actuator mounting for mounting said actuator means on one of the vehicle bodies; means and a fluid reservoir for storing fluid and moving this fluid into and out of said actuator means; a loading means; monitoring relative deflection of the vehicle body between said fluid accumulation means and said actuator means; controlling the inflow and outflow of fluid at the abutment portion and selecting the abutment portion in a first position for engagement with the body portion; and when the vehicle body is operatively coupled by engagement with the abutment portion. fluid monitoring means for continuously adjusting the resistance to relative excursions of the vehicle body; A device comprising: 2. the actuator means includes a piston and cylinder arrangement; The piston rod of the piston and cylinder arrangement configuration includes an abutment portion on the outside thereof. Equipment in scope 1 of the request. 3. 3. A device according to claim 1 or 2, wherein the abutment portion provides a low friction surface. 4. 4. The device of claim 3, wherein the abutment portion is formed from rubber. 5. Actuator means is configured such that the first actuator directs hydraulic fluid to one of the pistons. a first accumulator providing hydraulic fluid on one side of the piston and a second accumulator providing hydraulic fluid on the other side of the piston. 5. The device according to claim 1, further comprising a storage device. 6. The fluid monitoring means is a control valve, the control valve is configured to control The excursion of the hydraulic fluid when a relative movement occurs over a certain parameter range. 6. The device according to any one of claims 1 to 5, having a design shape that is limited to: 7. A vehicle having interconnected bodies, one body having wheels. at least one frame assembly with the other side of the vehicle body attached to the frame assembly. the other vehicle body using the device according to any one of claims 1 to 6. lateral movement relative to the frame assembly is controlled; vehicle. 8. A method for controlling relative motion of interconnected vehicle bodies, the method comprising: monitoring relative motion of the vehicle body; directing fluid into and out of the fluid storage means and the actuator means; during the fluid movement phase in which the outer portion of said actuator means engages a movable abutment. a fluid transfer step comprising: The abutting portion is connected to the other vehicle body which can be freely engaged with the one vehicle body by means of a fluid related to the one vehicle body. selectively moving away from a portion of the vehicle body; The quasi-static resistance force against the movement of the collision part when it engages with a part of the vehicle body. and adjusting.