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Hydraulic boost valve

A technology of hydraulic booster and booster cavity, which is applied in the field of hydraulic booster valves, can solve the problems of uncompact and reasonable structure, large installation volume, and many parts, and achieve the effects of light weight, small installation volume and sensitive system response

Inactive Publication Date: 2013-04-17
宁波安捷制动器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their problems are that the structure is not compact and reasonable, the installation volume is large, and there are many parts, which need further improvement

Method used

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as Figure 1-2 As shown, a hydraulic booster valve includes a valve body 100. The valve body 100 is provided with a total oil inlet P, a total oil return port, a brake oil port BR and an external oil port Ps. The oil inlet P is divided into two paths, one path is connected to the sequence valve 1, and the other path is connected to the inlet of the reversing valve 5 after passing through the oil inlet check valve 2, and the external oil port Ps is connected to the steering system so that the hydraulic oil in the oil inlet port It will not return to the oil tank directly, so that even if the brake pedal is not stepped on, the hydraulic oil from the oil pump will also enter the steering system, so that the hydraulic energy can be fully utilized; the main oil inlet P is also connected to the reversing valve 5 through the flow channel ...

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Abstract

The invention relates to a hydraulic drifting valve. The hydraulic drifting valve comprises a valve body provided with a main oil inlet, a main oil return port, a brake oil port and an external oil port, and is characterized in that the main oil inlet on the valve body is communicated with the external oil port on the valve body through a sequence valve, and is connected with the inlet of a reversing valve through a runner; the outlet of the reversing valve is connected with the power assisting cavity of the drifting valve; one path of the spring cavity of the drifting cavity is connected with an oil tank through an oil-filling one-way valve, and the other path of the spring cavity of the drifting cavity is connected with the brake oil port; the oil return port of the reversing valve is connected with the oil tank; the piston body of the drifting body is directly or indirectly connected with the reversing valve core of the reversing valve; the reversing valve core is connected with anejector rod; when the reversing valve is in a left-site functional state, the inlet and the outlet of the reversing valve are communicated; when the reversing valve is in a right-site functional state, the outlet of the reversing valve is communicated with the oil return port; hydraulic power can be generated by only applying smaller push power to the ejector rod of a pedal, thus realizing the purpose of steadily braking; and the hydraulic drifting valve has the advantages of stable operation, sensitive action and energy conservation.

Description

technical field [0001] The invention relates to a hydraulic booster valve. Background technique [0002] The braking system of modern forklifts mostly uses vacuum boosting. The establishment of the braking system pressure is generated by the combined action of the external force acting on the brake pedal and the vacuum booster, but it mainly depends on the vacuum booster. It takes a long time from the time the driver steps on the brake pedal to the establishment of system pressure, and the system response is relatively slow; when the vacuum booster is working, it also has a certain impact on the working conditions of the engine; it is difficult to achieve quantitative automatic control of braking. [0003] Such as the Chinese patent No. 01821636.6 has an improved booster effect pneumatic brake booster, it can absorb some booster force except the booster force normally applied by a reaction disc. In a preferred embodiment, the force is absorbed by a slide comprising a sleeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/12B60T15/00
Inventor 张柏青
Owner 宁波安捷制动器有限公司
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