Pressurizing and locking hydraulic buffer system

Abstract

The invention relates to a pressurizing and locking hydraulic buffer system, belonging to the field of hydraulic buffer. The system comprises a hydraulic cylinder and an oil storage tank, wherein the hydraulic cylinder comprises a cylinder sleeve, a piston and a piston rod; the hydraulic cylinder is divided into a first chamber and a second chamber by the piston; a first oil extraction oil line and a first oil absorption oil line are communicated by virtue of the first chamber and the oil storage tank; the pressurizing and locking hydraulic buffer system also comprises at least one overflow valve, at least one electromagnetic valve and at least one hydraulic damp; and the overflow valve and the electromagnetic valve are connected in parallel in the first oil extraction oil line and a second oil extraction oil line. The supercharging and locking hydraulic buffer system provided by the invention has the advantages of skillful design, simple and compact structure, low failure rate and good buffer effect; through setting the constant hydraulic damp, the resistance force buffer effect is achieved in proportion to the cornering speed of a vehicle; and as the overflow valve is arranged, the vehicle is enabled to be provided with the functions of super angle locking and safe protection.

Description

technical field [0001] The invention relates to the technical field of damping and shock absorbing control systems for vehicles, in particular to a pressurized and locked hydraulic buffer system. Background technique [0002] With the rapid development of my country's automobile manufacturing industry, various vehicle manufacturing industries are also advancing by leaps and bounds. Articulated buses are gradually popularized in large and medium-sized cities in China due to their large passenger capacity and high utilization coefficient. Articulated buses are generally composed of front and rear carriages and a chassis articulation system connecting the front and rear carriages. The hydraulic buffer system in the chassis articulation system is a key factor restricting the performance of articulated cars. In the prior art, the hydraulic buffer system of articulated buses generally consists of two hydraulic Cylinder, a hydraulic controller and an electrical control system, the ...

AI Technical Summary

Problems solved by technology

Articulated buses are generally composed of front and rear carriages and a chassis articulation system connecting the front and rear carriages. The hydraulic buffer system in the chassis articulation system is a key factor restricting the performance of articulated cars. In the prior art, the hydraulic buffer system of articulated buses generally consists of two hydraulic Cylinder, a hydraulic controller and an electrical control system, the hydraulic cylinder is controlled by the hydraulic controller to change the size of its output resistance, the electrical control system sends a signal to the hydraulic controller according to the turning angle of the vehicle, so that it can change different pressure values, such as China Patent CN201086607 discloses a hydraulic damping control system through mandrel rotation to control hydraulic damping, thereby changing the hydraulic control system of buffer damping. Although this control system can form different damping according to the change of vehicle angle, it can prevent front and rear vehicles from shearing. It has obvious effects, but the mandrel structure is more complex, the machining accuracy is high, the cost is high, the installation and connection are complicated, the space is large, and there are also disadvantages such as oil leakage, spool stuck or electrical system failure.

[0003] At the same time, due to the hydraulic damping system in the prior art, the cushioning effect is not ideal, especially when used in articulated buses. If the damping and cushioning cannot be effectively controlled, the driver will often have problems due to the turning angle when driving an articulated vehicle, especially when making a large turn. Accidents occur, resulting in casualties and property losses

Images