Hydraulic operating mechanism and hydraulic control valve thereof
A hydraulic control valve and hydraulic actuation technology, which is applied to engine components, fluid pressure actuating devices, valve details, etc., can solve problems such as reduced work efficiency, hydraulic system can no longer be established, and hydraulic control valve conversion is not in place, etc., to achieve The effect of improving work efficiency
Inactive Publication Date: 2019-05-17
HENAN PINGGAO ELECTRIC +2
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Problems solved by technology
[0005] The purpose of the present invention is to provide a hydraulic operating mechanism to solve the problem that in the prior art, when the circuit breaker is operated slowly, the switching of the hydraulic control valve is not in place and the hydraulic system cannot be established again, which reduces the work during debugging. The technical problem of efficiency; at the same time, the object of the present invention is to provide a hydraulic control valve for the hydraulic operating mechanism to solve the problem that in the prior art, when the circuit breaker is operated slowly, the switching of the hydraulic control valve is not in place. And the technical problems that caused the hydraulic system to no longer be established
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[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0024] Embodiments of the hydraulic operating mechanism of the present invention, such as figure 1 and figure 2 As shown, the hydraulic operating mechanism includes a hydraulic cylinder and a hydraulic control valve that drives the hydraulic cylinder. The hydraulic control valve includes a valve seat and a valve sleeve assembled in the valve seat, and a valve core 14 is installed for guiding, sliding and sealing inside the valve sleeve.
[0025] like figure 1 As shown, the valve seat includes a cylinder part 11, a right end cover 21 part and a left end cover 211 part, and the lower cylinder wall of the cylinder part 11 is arranged in sequence from left to right for communicating with the low-pressure oil tank (not shown in the figure). The low-pressure oil chamber 22, the hydraulic cylinder oil chamber 24 for communicating with the hydra...
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The invention provides a hydraulic operating mechanism and a hydraulic control valve thereof. The hydraulic operating mechanism comprises a hydraulic cylinder and a hydraulic control valve, wherein the hydraulic control valve comprises a valve body and a valve sleeve; the valve sleeve is internally provided with a valve core, the valve core is used for communicating a high-pressure oil cavity witha low-pressure oil cavity when the hydraulic control valve is located at a brake opening position and is used for communicating the high-pressure oil cavity with a hydraulic cylinder oil cavity whenthe hydraulic control valve is located at the brake closing position, a control cavity is arranged in the valve sleeve, and an ejecting and pushing block is arranged in the control cavity; and the hydraulic control valve further comprises a driving part, a through hole is formed in the valve sleeve or a valve base, and the driving part is provided with an operation end. When the slow closing operation is carried out, is pushed through the pushing block, the valve element is pushed to the brake closing position through the ejecting and pushing block and the driving part from the brake opening position, stability and reliability are achieved, the phenomenon that the hydraulic control valve cannot be switched in place from the brake opening position to the brake closing position under the action of the lower pressure of a hydraulic system when a breaker is subjected to the slow closing operation is effectively avoided, so that the working efficiency during debugging is improved.
Description
technical field [0001] The invention relates to the field of a hydraulic operating mechanism and its hydraulic control valve. Background technique [0002] The hydraulic operating mechanism is the mechanism that drives the circuit breaker body to realize opening and closing, and the hydraulic control valve is the core component of the hydraulic operating mechanism. The hydraulic control valve controls the hydraulic operating mechanism and then drives the circuit breaker body to realize opening and closing. close. [0003] For example, the Chinese utility model patent whose authorized notification number is CN204851819U discloses a control valve and a circuit breaker hydraulic operating mechanism using the control valve. The device comprises a valve seat, a valve sleeve arranged in the valve seat, and a valve core arranged in the valve sleeve, and the valve core can reciprocate along the axial direction of the valve sleeve. There are control cavity, high pressure oil cavity...
Claims
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Login to View More IPC IPC(8): F16K11/065F16K31/12F15B13/02
Inventor 顾根泉王亚辉张朝辉张全民李文华王晗高翔
Owner HENAN PINGGAO ELECTRIC