A four-wheel steering hydraulic system for aerial work platforms

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By adopting a hydraulic system with double-outlet rod double-acting cylinder and steering control valve group, the high cost, complex maintenance, synchronization and hysteresis of the four-wheel steering hydraulic system of the aerial work platform is solved, and simpler and more economical control and higher service life are achieved.

CN107813870BActive Publication Date: 2025-03-25LINGONG GROUP (JINAN) HEAVY MACHINERY CO LTD

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Patent Information

Application Number: CN201711251533.7
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2017-12-01
Publication Date: 2025-03-25
Estimated Expiration: 2037-12-01

Application Information

Patent Timeline

01 Dec 2017

Application

CN201711251533.7

25 Mar 2025

Publication

CN107813870B

IPC: B62D5/10; B62D5/08; F15B11/16; F15B13/06; F15B21/08

CPC: F15B11/16; F15B13/06; F15B21/087; B62D5/08; B62D5/10

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Application Domain

Servomotor components Servomotors

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AI Technical Summary

Technical Problem

The existing four-wheel steering hydraulic system of the aerial platform is costly and complex in maintenance, and has problems of synchronization and hysteresis, with high failure rate and complex debugging applications.

Method used

The double-outlet rod and double-acting oil cylinder control system including the front steering cylinder and the rear steering cylinder is adopted. The steering control valve group and hydraulic pipeline are connected to the oil tank to simplify the hydraulic oil circuit and avoid the closed-loop control of the sensor angle.

Benefits of technology

It effectively reduces cost and maintenance complexity, simplifies control and debugging, eliminates synchronization and hysteresis problems, and improves the service life of the entire machine.

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Abstract

The present invention relates to a four-wheel steering hydraulic system for an aerial work platform. The four-wheel steering hydraulic system for an aerial work platform is characterized in that it comprises a front steering cylinder arranged at the rear side of a front steering drive axle of the aerial work platform and a rear steering cylinder arranged at the front side of a rear steering drive axle of the aerial work platform, wherein the front steering cylinder drives and connects the front steering drive axle, and the rear steering cylinder drives and connects the rear steering drive axle. The structural design is reasonable and novel, effectively reduces the cost, is simple and convenient to maintain, effectively avoids closed-loop control of sensor angles, is simple and convenient to control, is simple to debug and operate, effectively eliminates existing problems of synchronization and hysteresis, makes inspection and maintenance more convenient, and effectively increases the service life of the whole machine.

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