Actuator based on one-way hydraulic pump
A hydraulic pump and actuator technology, applied in the hydraulic field, can solve problems such as throttling loss and achieve the effect of simple structure
Inactive Publication Date: 2017-06-13
FLIGHT AUTOMATIC CONTROL RES INST
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Problems solved by technology
[0003] The purpose of the present invention is: the purpose of the present invention is to propose a power electric drive actuator scheme that uses solenoid valve reversing to solve the problem of using a one-way hydraulic pump, especially a low-power one-way hydraulic pump as a driving power source. The reversing element has the problem of throttling loss
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[0010] The present invention will be described in further detail below. see Figure 1 ~ Figure 3 , an actuator based on a one-way hydraulic pump, including the following parts: one-way hydraulic pump [1], accumulator [2], solenoid valve A[3] and solenoid valve B[4] and actuating Barrel [5]. The oil discharge port and oil suction port of the one-way hydraulic pump [1] are connected with the oil inlet and return oil of the solenoid valve A[3] and solenoid valve B[4], and the accumulator [2] is connected with the one-way hydraulic pump [1] ] oil suction port, the control cavity of solenoid valve A[3] is connected with the control cavity of actuator [5], and the control cavity of solenoid valve A[4] is connected with the retraction control cavity of actuator [5]. Realize the motion control of the actuator.
[0011] The working principle of the present invention is:
[0012] When working normally, solenoid valve A is connected, solenoid valve B is disconnected, the extension ch...
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The invention belongs to the field of hydraulic techniques, and relates to innovative design of the scheme of an actuator based on a one-way hydraulic pump. The actuator based on the one-way hydraulic pump comprises the one-way hydraulic pump, an energy accumulator, two two-position and three-way electromagnetic valves and an actuation cylinder. The actuator based on the one-way hydraulic pump is characterized in that the one-way hydraulic pump is adopted by the actuator to serve as a driving power source. The electromagnetic valves (3 and 4) are used for achieving movement reversing and fault mode switching of an actuator cylinder (5), and control over changing of the movement direction of the actuator cylinder (5) is achieved by controlling the on-off states of the electromagnetic valves. The design of the power-by-wire actuator based on the one-way hydraulic pump is achieved, the scheme of the actuator adopting the electromagnetic valves for reversing is provided, and the problem that when the one-way hydraulic pump, particularly a low-power one-way hydraulic pump, is used as the driving power source, throttling loss of traditional reversing elements can be caused is solved. The actuator based on the one-way hydraulic pump has the advantages that throttling loss of the actuator is avoided, and the structure is simple.
Description
technical field [0001] The invention belongs to the field of hydraulic technology, and relates to an actuator based on a one-way hydraulic pump. Background technique [0002] Actuation technology is developing from traditional electro-hydraulic servo actuation to power-by-wire actuation. Electrostatic hydraulic actuator is a typical power-by-wire actuator, which uses a hydraulic pump as the power drive source. For a one-way hydraulic pump, The oil suction port and oil discharge port of the pump are fixed, and the flow pressure needs to increase the reversing element to realize the reversing, while the traditional reversing element such as the servo valve is a throttling control valve, which has a large energy loss and excessive throttling. Loss of flow will result in the actuator not performing as expected. Contents of the invention [0003] The purpose of the present invention is: the purpose of the present invention is to propose a power electric drive actuator scheme u...
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Login to View More IPC IPC(8): F15B15/14F15B15/20
Inventor 樊耀辉夏立群王少华朱明君
Owner FLIGHT AUTOMATIC CONTROL RES INST