Electronically controlled pressure relief mechanism with double pressure reduction function
A functional and electronically controlled technology, applied in the direction of mechanical equipment, fluid pressure actuators, servo motors, etc., can solve the problems of damaged motors, hydraulic motor shocks, etc., and achieve the effect of reducing noise and slowing down the opening speed
Active Publication Date: 2020-08-11
BEIJING CRONDA NEW TECH CO LTD
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Problems solved by technology
[0003] However, after the above-mentioned switch valve is opened, the hydraulic oil provided by the hydraulic pump suddenly enters the hydraulic motor through the hydraulic pipeline with a large flow, thereby causing a large impact on the hydraulic motor, and sometimes even damages the motor.
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[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] Before introducing the electronically controlled pressure relief mechanism with double pressure-reducing function of the present invention, firstly, the reason why the hydraulic motor 40 is easily damaged due to the on-off valve 20 in the hydraulic control system in the prior art is introduced.
[0022] As introduced in the background technology, when the spool of the switch valve 20 is opened, a large amount of hydraulic oil provided by the hydraulic pump 10 enters the left chamber 23, and the hydraulic oil entering the left chamber 23 enters the hydraulic motor 40 competitively through the hydraulic pipeline. , the hydraulic oil enters the hydraulic pipeline connected to the hydraulic motor 40, so that the pressure of the...
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The invention discloses an electric pressure releasing mechanism with dual pressure reducing function. The mechanism comprises a hydraulic pump, a hydraulic motor, a switch valve and a control unit. According to the mechanism, a first one-way valve is arranged, and part of hydraulic oil which enters a left chamber when a first valve element is opened can enter a right chamber through the first one-way valve and then returns to an oil tank, so that the volume of the hydraulic oil entering a second hydraulic pipeline can be effectively decreased, and the pressure of the hydraulic oil in the second hydraulic pipeline and the hydraulic motor can be effectively instantaneously reduced, and as a result, the second hydraulic pipeline and the hydraulic motor are effectively protected, and the noise is reduced; a balancing mechanism is arranged and capable of absorbing some hydraulic oil in the second pipeline, thus the flow rate of the hydraulic oil in the second hydraulic pipeline is reduced,and as a result, the pressure is reduced, and meanwhile, the opening speed of a second valve element is reduced.
Description
technical field [0001] The invention relates to the technical field of electromechanical control, in particular to an electronically controlled pressure relief mechanism with double pressure-reducing functions. Background technique [0002] In hydraulic transmission control technology, at least hydraulic power source (such as hydraulic pump), hydraulic actuator (such as hydraulic motor or oil cylinder) and control unit (such as hydraulic control valve, such as throttle valve, relief valve, reversing valve, etc.) ). Among them, the hydraulic pump provides hydraulic oil, the pressure and flow of the hydraulic oil are controlled by the control unit, and the hydraulic motor is used to convert the power of the hydraulic oil into mechanical power to achieve the required functions, such as driving the wheel hub to rotate. In the prior art, there is a control unit, specifically, a switch valve, which is used for conducting or disconnecting the hydraulic pipeline between the hydraul...
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IPC IPC(8): F15B11/08F15B13/02
CPCF15B11/08F15B13/02
Inventor 周报
Owner BEIJING CRONDA NEW TECH CO LTD