Intermittent follower hydraulic cylinder
A hydraulic cylinder, intermittent technology, applied in the field of hydraulic cylinders, can solve the problems of large inertia, mechanical collision of end caps, limited boosting effect, etc., to improve the service life and avoid the impact of the cylinder body.
Inactive Publication Date: 2008-12-17
BEIHANG UNIV
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Problems solved by technology
However, the traditional hydraulic cylinder has two shortcomings in its work, which have not been well resolved so far: one is that when the traditional hydraulic cylinder is used for power assistance, it is realized by the difference between the working surfaces on both sides of the piston. Due to the limitation of size, The boosting effect is very limited; the second is that when the hydraulic cylinder piston moves at a high speed and drives a component with a large mass, its inertia is very large. Mechanical collision with the end cover is extremely harmful to the hydraulic cylinder and the system
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0018] The present invention is a kind of intermittent follow-up hydraulic cylinder, (see figure 1 As shown) cylinder block 1 is provided with four oil ports, namely, oil port A 21, oil port B 22, oil port C 23, and oil port D 24. A left flange 5 and a right flange 4 are installed on the left and right sides of the cylinder body 1 respectively. (see Fig. 2 shown) left piston 2, middle piston 3, right piston 6 are installed in cylinder body 1 from left to right, the outer wall of left piston 2 and cylinder body 1 inner wall form outer chamber A 101, the middle piston 3 The outer wall and the inner wall of the cylinder body 1 form an outer chamber B 102 and an outer chamber C 103 from left to right, an outer chamber D 104 is formed between the outer wall of the right piston 6 and the inner wall of the cylinder body 1; the inner wall of the left piston 2 is pro...
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The invention discloses an intermittent servo hydraulic cylinder. There are for oil ports on cylinder. Left flange and right flange are set on left and right sides of cylinder. Piston is set in the cylinder. Multiple outer cavities and inner cavities A are formed on outer wall of piston and inner wall of cylinder. Multiple outer steps are set on the shell of valve core. Step on the valve core can control switch of piston inner cavities in the invention by setting a valve core in the piston so as to realize switch of piston outer cavity by via hole on the piston. Intermittent servo between the valve core and the piston can be realized. In this way, only very small force can be used to operate valve core to move so that the piston moves quickly under the action of large pressure difference and power-assisted effect is far stronger than conventional hydraulic cylinder without valve core.
Description
technical field [0001] The present invention relates to a hydraulic cylinder, more particularly, refers to an intermittent follow-up hydraulic cylinder in which the valve core moves under the action of external force, so that the piston follows the valve core for intermittent movement. Background technique [0002] The hydraulic cylinder is an actuator that converts the pressure energy of the liquid into mechanical energy to realize reciprocating linear motion or reciprocating swing. The traditional hydraulic cylinder has the advantages of simple structure, reliable operation and easy manufacture. However, the traditional hydraulic cylinder has two shortcomings in its work, which have not been well resolved so far: one is that when the traditional hydraulic cylinder is used for power assistance, it is realized by the difference between the working surfaces on both sides of the piston. Due to the limitation of size, The boosting effect is very limited; the second is that whe...
Claims
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IPC IPC(8): F15B15/14
Inventor 杜发荣张玉良肖凌云
Owner BEIHANG UNIV