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hydraulic steering system

A steering system and hydraulic technology, applied in the field of vehicles, can solve problems such as waste, large energy consumption, and high overflow pressure

Active Publication Date: 2017-11-10
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to ensure the pressure of the steering oil supply circuit, the setting value of the overflow valve 14 is relatively high, and the overflow pressure is high. When the steering is not turned, the steering pump 11 overflows through the overflow valve 14, resulting in a large energy consumption, resulting in waste

Method used

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Please refer to Figure 2-3 , figure 2 It is a structural principle diagram of a specific embodiment of the steering system provided by the present invention; image 3 for figure 2 Hydraulic schematic diagram of the hydraulic steering system.

[0034] The hydraulic steering system in this embodiment includes a steering pump 2 and a relief valve 4. The steering pump 2 is driven by the engine 1 to pump oil. The steering pump 2 supplies oil to the steering cylinder 5 through the oil supply circuit. The oil supply circuit is provided with Turning to the distribution valve 306 to realize steering in different directions can be understood with reference to the principles of the background technology.

[0035] In ad...

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Abstract

The invention discloses a hydraulic steering system, which includes a steering pump and an overflow valve. The steering pump supplies oil to the steering oil cylinder through an oil supply circuit, and can overflow through the overflow valve. The flow valve opens and closes the first reversing valve. The hydraulic steering system can control the closing and opening of the overflow valve. When steering, the overflow valve can be closed, and when it is not steering, it can be opened to realize overflow, that is, the overflow pressure and the pressure of the steering oil circuit are no longer related to each other. Therefore, the overflow pressure of the overflow valve does not need to be set higher than in the prior art to meet the pressure demand of steering, so that the overflow loss when not turning in this solution is small, and energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a hydraulic steering system. Background technique [0002] The hydraulic steering system includes a steering pump, which is usually connected to the crankshaft of the engine, or indirectly connected through a gear set, and is driven by the engine to rotate, thereby providing power for the steering system. The steering pump is generally installed on the engine flywheel housing. [0003] Please refer to figure 1 , figure 1 It is a hydraulic schematic diagram of a typical hydraulic steering system. [0004] It can be seen from the figure that the hydraulic steering system includes a steering pump 11 , an overflow valve 14 , a steering distribution valve 12 and a steering cylinder 13 . [0005] When the engine rotates, it drives the steering pump 11 to rotate, thereby supplying oil to the steering distribution valve 12 through the oil supply circuit, so as to supply oil to the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/06
Inventor 谭旭光赵秀敏刘林王宏宇唐凤坤
Owner WEICHAI POWER CO LTD