Outflow-type micro-stoke double-acting exciting hydraulic cylinder
A double-acting, hydraulic cylinder technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of difficult position control, large hydraulic cylinder stroke, complex position control system, etc., to achieve High-frequency vibration, solving oil temperature rise, simple system effect
Inactive Publication Date: 2013-09-18
ZHEJIANG UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to provide a leaking micro-stroke double-acting excitation hydraulic cylinder, which solves the problems of the existing hydraulic cylinders such as large stroke, complicated position control system, high cost, unsatisfactory working load, small vibration amplitude, and difficult position control.
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[0015] The present invention will be further described below in conjunction with drawings and embodiments.
[0016] Such as figure 1 As shown, a leaking type micro-stroke double-acting excitation hydraulic cylinder of the present invention is mainly composed of an end cover 1, an end cover 2, a cylinder barrel 3, a piston rod 4, a piston 5, a first flow channel 15, a first flow channel 16, a second flow channel Runner 17, second runner 18, fifth runner 6, sixth runner 7, seventh runner 8, eighth runner 9, annular groove 10, installation hole 11, check valve 12, check valve 13. Main oil port A 1 and main port A 2 and so on.
[0017] The end cap 1 on the left side of the piston 5, the cylinder barrel 3, the left part of the piston rod 4 and the piston 5 form a closed second working oil chamber C, and the end cap 2, the cylinder barrel 3, and the piston rod 4 on the right side of the piston 5 The right part and the piston 5 form a closed first working oil chamber B. The pis...
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The invention discloses an outflow-type micro-stoke double-acting exciting hydraulic cylinder. A first flow channel and a second flow channel which are communicated with each other are simultaneously arranged in piston rods on the two sides of a piston of the double-acting hydraulic cylinder, the exit of the second flow channel is provided with a one-way valve, more than one pair of spacing holescommunicated with the first flow channel are arranged along the circumferential direction of the piston rods, the central axes of each pair of spacing holes are coincident and respectively intersected with the central axis of the first flow channel; the central axes of all spacing holes in the piston rods on the same side are positioned on the same cross section of the piston rods, the inner diameters of all spacing holes are same and the central axes of all spacing holes are equidistant from the central cross section of the piston; the first flow channel and the second flow channel on the two sides of the piston are respectively in a mirror symmetry relative to the central cross section of the piston; the distance between end covers on the two sides of the piston is the same with the distance between the central axes of the spacing holes on the two sides of the piston; the inner surface of the side wall of a cylinder barrel is provided with a ring groove and a mounting hole is installed in the side wall; a third flow channel and a fourth flow channel are arranged in the piston, wherein the third flow channel and the fourth flow channel are in a mirror symmetry relative to the central cross section of the piston.
Description
technical field [0001] The invention relates to a double-acting hydraulic cylinder, which is mainly used in the technical field of hydraulic vibration exciters for external load vibration. Background technique [0002] The exciter is a device attached to some machinery and equipment to generate exciting force, and is an important part of using mechanical vibration. The vibrator can make the excited object obtain a certain form and size of vibration, so as to perform vibration and strength tests on the object, or to calibrate vibration testing instruments and sensors. According to the different excitation types, the exciter is divided into inertial electric type, electromagnetic type, electro-hydraulic type, pneumatic type and hydraulic type. The vibrator can be used as an exciting part to form a vibrating machine, which is used to realize the conveying, screening, compacting, forming and tamping of soil and gravel of materials or objects. In recent years, hydraulic exciter...
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IPC IPC(8): F15B21/12
Inventor 龚国芳闵超庆刘毅杨学兰
Owner ZHEJIANG UNIV