Control valve and electrohydraulic proportional control valve with same

A technology of electro-hydraulic proportional and control valves, which is applied in the field of electro-hydraulic proportional control valves, control valves and valves, to achieve the effects of reasonable layout, convenient operation and convenient processing

Active Publication Date: 2013-07-17
ZHEJIANG HAIHONG HYDRAULIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose

Method used

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  • Control valve and electrohydraulic proportional control valve with same
  • Control valve and electrohydraulic proportional control valve with same
  • Control valve and electrohydraulic proportional control valve with same

Examples

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Example Embodiment

[0044] The following are specific embodiments of the present invention in conjunction with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0045] Such as Figure 1 to Figure 5 As shown, the control valve includes a control valve body 1 and a shift valve stem 1f.

[0046] The control valve body 1 has a stem cavity 1a corresponding to the shape of the shift valve stem 1f; the shift valve stem 1f is arranged in the valve stem cavity 1a, so that the shift valve stem 1f can follow the valve stem cavity 1a The side wall slides axially, and one end of the shift valve rod 1f penetrates the control valve body 1 for easy manipulation. A sealing oil seal structure is provided where the shift valve rod 1f penetrates the control valve body 1 to avoid oil leakage from there.

[0047] Such as Figure 1 to Figure 6 As shown, the shift valve rod 1f is preferably a round rod, and this str...

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Abstract

The invention provides a control valve and an electrohydraulic proportional control valve with the same, belongs to the technical field of project elements, and solves the problem that the existing control valve is difficult to meet a high-performance occasion. The control valve comprises a control valve body and a gear shifting valve rod, wherein an inner side wall of a valve rod cavity I of the control valve body is provided with an oil inlet I, an oil return port I and four gear position oil outlets; and the valve rod is provided with an oil inlet communicating channel capable of communicating the oil inlet I with one of gear position oil outlets, and the valve rod is also provided with an oil return communicating channel. The electrohydraulic proportional control valve comprises a control circuit, a proportion pressure reducing valve and the control valve, wherein a proportion electromagnet of the proportion pressure reducing valve, a sensor assembly I and a sensor assembly II of the control valve are all connected with the control circuit. The control valve is suitable for four-gear-driven vehicles, and is more suitable for an accurate control operating valve group. The control valve provided by the invention has the advantages that the structure is compact, the arrangement is reasonable, the operation is convenient, and the property is stable.

Description

technical field [0001] The invention belongs to the technical field of engineering components, and relates to a valve, in particular to a control valve. [0002] The invention belongs to the technical field of engineering components, and relates to a valve, in particular to an electro-hydraulic proportional control valve with the above-mentioned control valve. Background technique [0003] After nearly 60 years of development, automatic transmissions have been widely used in various engineering vehicles and automobiles. Due to the harsh working environment, heavy workload, long working hours, and frequent gear shifts (on average every 3.6 seconds), construction vehicles have a very high labor intensity for drivers. At the same time, during the process of shifting gears, the phenomenon of shifting impact and power interruption often occurs. [0004] With the progress of society and the gradual development of economy, people have higher and higher requirements for the comfor...

Claims

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Application Information

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IPC IPC(8): F16K11/07F15B13/02F16H61/38
Inventor 何贤剑王鑫
Owner ZHEJIANG HAIHONG HYDRAULIC TECH
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