Electromagnetic reversing valve with load induction oil ports
An electromagnetic reversing valve and load sensing technology, applied in valve details, multi-port valves, valve devices, etc., can solve the problems of limited application of plate electromagnetic reversing valves, no load sensing oil port, etc., to achieve stable dwell, The effect of improving stability
Pending Publication Date: 2020-11-13
上海海一角企业发展有限公司
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Problems solved by technology
[0003] In construction mobile machinery, the load sensing system is widely used. In the multi-way valve and some threaded cartridge valves, the load sensing oil port is designed, while in the conventional plate type electromagnetic reversing valve, there are only four oil ports. (P oil port, A oil port, T oil port and B oil port), and there is no design of load sensing oil port, which limits the application of plate electromagnetic directional valve in the field of construction machinery
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[0027] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.
[0028] Aiming at the wide application of load sensing system in engineering mobile machinery, load sensing oil ports are designed in multi-way valves and some threaded cartridge valves, while in conventional plate electromagnetic reversing valves, there are only four oil ports. ports (P oil port, A oil port, T oil port and B oil port), and there is no load sensing oil port design, which leads to the limited application of plate electromagnetic reversing valve in the field of construction machinery; the purpose of the present invention The purpose is to provide an electromagnetic reversing valve with a load sensing oil port to solve the above-mentioned problems. In order to achieve the above purpose, the following technical solutions are specifically provided:
[0029] In the embodiment of the present invention, such as figure 1 and f...
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The invention is suitable for the technical field of electromagnetic reversing valves, and particularly relates to an electromagnetic reversing valve with load induction oil ports. The electromagneticreversing valve comprises a valve body; an oil port B, an oil port P, an oil port A, a plurality of oil ports T and a plurality of load induction oil ports are formed in a valve body; the electromagnetic reversing valve further comprises a valve core; the valve core is installed inside the valve body; a plurality of oil holes are formed in a main body of the valve core, and the oil sealing amountand the opening amount are calculated with the cooperation of the oil holes and shaft shoulder structures at two ends, to complete the on-off operation between the oil port B, the oil port P, the oilport A, the oil port T and the load induction oil ports; through the oil port B, the oil port P, the oil port A, the oil port T and the load induction oil ports, unloading of the load induction oil ports and stable staying of a median oil cylinder are realized; and the oil sealing amount and the opening amount are calculated with the cooperation of the oil holes and the shaft shoulder structuresat the two ends, so that a load induction function is realized as well as functions of median and reversing-position oil ways.
Description
technical field [0001] The invention relates to the technical field of electromagnetic reversing valves, in particular to an electromagnetic reversing valve with a load sensing oil port. Background technique [0002] The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cut-off and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. [0003] In construction mobile machinery, the load sensing system is widely used. In the multi-way valve and some threaded cartridge valves, the load sensing oil port is designed, while in the conventional plate type electromagnetic reversing valve, there are only four oil ports. (P oil port, A oil port, T oil port and B oil port), and there is no design of load sensing oil port, which limits the application of plate electromagnetic directional valve in the field of construction machinery. Contents o...
Claims
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IPC IPC(8): F15B13/02F16K11/07F16K27/04F16K31/06
CPCF15B13/02F16K11/0716F16K27/041F16K31/0613
Inventor 姜洪姜国安乔伟伟卢肖肖张成刚
Owner 上海海一角企业发展有限公司