Numerical control hydraulic control unit
A control unit and hydraulic technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of different pressures without oil circuits, increased external dimensions, and sealing problems, etc., to achieve small external dimensions , Reduce the overall size and improve the effect of sealing performance
Inactive Publication Date: 2014-11-26
江正庆
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Problems solved by technology
[0007] (3) The main hole of the valve casing is a through hole, and both ends must be sealed, and the sealing performance is poor
[0008] (4) The overflow valve is located in another housing, which is assembled by two separate valve housings, which not only has sealing problems, but also increases the overall size
[0009] (5) The pressure of each working oil circuit is the same, and it needs to be changed synchronously, and there is no function of different pressures for each oil circuit
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[0031] Such as Figure 1 to Figure 6As shown, the numerical control hydraulic control unit of the present invention includes a coaxial valve body 1, a main valve core 2 and a valve stem 3, the valve stem 3 is installed in the middle hole of the main valve core 2, and the main valve core 2 is a cylinder. The cylindrical surface of the main valve core 2 is liquid-tightly matched with the inner wall of the main hole of the valve body 1 .
[0032] The valve body 1 is provided with a general oil inlet 1a connected to the pressure oil source 17, a general oil return port 1e connected to the pressure oil source tank, and multiple groups of valve body outlets connected to a plurality of hydraulic actuators 12 respectively. Oil port 1b and valve body return oil port 1c. Each valve body oil outlet 1b and corresponding valve body oil return port 1c are located on the same cross-section with a phase difference of 180°. The hydraulic actuators can be hydraulic motors, hydraulic cylinders...
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The invention relates to a numerical control hydraulic control unit. The numerical control hydraulic control unit comprises a valve body, a main valve core and a valve rod, which are coaxial, an oil outlet of the main valve core is respectively communicated with an oil supply distribution groove and s valve rod oil channel in the main valve core; an oil return port of the main valve core is respectively communicated with an oil return distribution groove, a valve body oil return channel and a main oil return port in the main valve core; a main hole of the valve body is a blind hole, a first servo motor is installed at an opening end of the valve body, an output shaft of the first servo motor is connected with a power input end of a first electromagnetic clutch, and the first electromagnetic clutch is connected with the main valve core by a deflector rod device; a second electromagnetic clutch is installed at the rear end of the valve rod, one of the two electromagnetic clutches is on, the other electromagnetic clutch is off, and the output end of the second electromagnetic clutch is connected with a transmission screw rod; and a transmission screw nut is screwed at the front end of the transmission screw rod, and the periphery of the transmission screw nut is connected with the main valve core by a combination bearing and a check ring. The numerical control hydraulic control unit drives the main valve core to rotate or move axially by the servo motor, is small in appearance size and convenient to control.
Description
technical field [0001] The invention relates to a numerical control hydraulic control unit, which can selectively control multiple hydraulic actuators. Background technique [0002] The existing hydraulic field is divided into two categories: hydraulic transmission and hydraulic control. The hydraulic transmission system mainly transmits power, and its system is composed of standard or special switching hydraulic components. The control accuracy of the motion parameters of the actuators is low, and the system works in an open-loop state. The hydraulic control system pays attention to information transmission, mainly to achieve accurate control of the movement parameters of hydraulic actuators (such as stroke speed, displacement, rotation speed or rotation angle). The system control part adopts hydraulic servo mechanism, and the movement parameters of actuators can be precisely controlled. The system works in a closed loop state. [0003] On September 14, 2011, the Chinese ...
Claims
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IPC IPC(8): F15B13/02
Inventor 江正庆
Owner 江正庆