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Hydraulic steering system

A steering system and hydraulic technology, applied in the field of steering system, can solve the problems of large impact and easy failure, and achieve the effect of reducing impact force, not easy to damage and failure, and smooth and comfortable steering

Inactive Publication Date: 2015-12-30
GUANGXI LIUGONG MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a hydraulic steering system with small impact and less prone to damage and failure in view of the disadvantages of the existing hydraulic steering system, such as large impact and easy failure.

Method used

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  • Hydraulic steering system

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Embodiment Construction

[0029] The specific implementation will be described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, the hydraulic steering system in this embodiment includes a steering cylinder 1, a flow amplifying valve 2, a steering pump 7, and a steering gear 4, and the flow amplifying valve 2 includes a main valve 21, a priority valve 22, and an oil inlet of the priority valve 22 It is the P port of the flow amplification valve 2, the priority output port of the priority valve 22 is connected to the oil inlet port of the main valve 21, and the other port of the priority valve 22 is the PB port, which can be connected with other hydraulic pressure on the machine or vehicle. The system connects and supplies oil to the hydraulic system.

[0031] The pump port of the steering pump 7 is connected to the P port of the flow amplifying valve 2, the working port A and the B port of the flow amplifying valve 2 are respectively connected with the large cham...

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Abstract

The invention relates to a hydraulic steering system, and aims at overcoming the defect that an existing hydraulic steering system is large in impact. The hydraulic steering system comprises steering cylinders, a flow amplifying valve, a steering pump and a steering device, the steering pump is connected with the steering device and the flow amplifying valve, the steering cylinders are connected with the flow amplifying valve, the steering pump supplies oil to the steering pump through the flow amplifying valve, and the control output end of the steering device is connected with the hydraulic control end of the flow amplifying valve; the hydraulic steering system further comprises a control device, and normally open solenoid valves are connected between the control output end of the steering device and the hydraulic control end of the flow amplifying valve; the control device comprises trigger mechanisms which send out trigger signals when the steering cylinders stretch and retract to preset positions, and the control device is connected with the electronic control ends of the solenoid valves and closes the solenoid valves when the trigger mechanisms give out the trigger signals. According to the hydraulic steering system, non-contact cutting is adopted by a steering buffer limiting technology, and the impact force is reduced; steering is smooth and comfortable, a part which needs to be cut off and steered is not prone to damage and invalidation, and the steering reliability of a whole machine is improved.

Description

technical field [0001] The present invention relates to a steering system, more specifically, to a hydraulic steering system. Background technique [0002] For large and heavy-duty articulated steer vehicles, when the vehicle is turned to the maximum steering angle position, there are three main reasons that will cause a large impact on the front and rear articulated devices: one is the large inertia of the body mass; the other is the operator's steering feel / The road feeling error leads to excessive operation of the steering wheel or the steering handle (joystick); the third is that the steering hydraulic system fails to throttle and adjust the speed in time (timely overflow or the flow of the steering pump cannot be quickly lowered in time). This huge impact at the end of the steering has a great impact on the reliability of the body structure, the reliability of the hydraulic system, and even the life and reliability of the entire vehicle, as well as the comfort of the d...

Claims

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Application Information

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IPC IPC(8): B62D5/065
Inventor 韦茂志谭艳辉梁振国姜炜王允
Owner GUANGXI LIUGONG MASCH CO LTD
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