Throttle loop
A circuit and oil return port technology, applied in the hydraulic field, can solve problems such as too sensitive adjustment and unfavorable system stability
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[0051] The specific embodiments of the present invention will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0052] Such as figure 1 As shown, an embodiment of the present invention provides a throttling circuit, wherein the throttling circuit includes a first working port A, a second working port B, a directional flow control valve 1 and four on-off valves 21, 22, 23, 24, the first working port A is in communication with the pressure oil port 1P of the direction flow control valve 1, and the four on-off valves 21, 22, 23, 24 are respectively connected in series at the first working port A and the direction Between the first working oil port 1A of the flow control valve 1, between the first working oil port 1A and the second working oil port 1B of the directional flow control valve 1, ...
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