Coaxial and same-side compact type variable structure applicable to bidirectional variable-displacement plunger pump
A variable displacement, plunger pump technology, applied in the field of variable structure, can solve the problems of large space volume, which is not conducive to the high power-to-weight ratio and occupation of bidirectional variable displacement plunger pumps, and achieve the effect of small occupied space
Active Publication Date: 2017-02-22
ZHEJIANG UNIV
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Problems solved by technology
This will occupy a large space volume, which is not conducive to the high power-to-weight ratio of the bidirectional variable displacement plunger pump
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[0025] Attached below Figures 1 to 4 The present invention is further described.
[0026] A coaxial and same-side compact variable structure suitable for bidirectional variable displacement plunger pumps, the structure is used to change the inclination angle of the swash plate 1 of the bidirectional variable displacement plunger pump, the structure includes variable spool connecting rod pins 3. Variable spool connecting rod 4, variable spring 5, variable spool 6, spring washer 7, variable valve sleeve 8 and screw plug 11.
[0027] The housing 12 of the two-way variable displacement plunger pump has an A-port cavity 12b and a B-port cavity 12c, the A-port cavity 12b communicates with the A-port flow channel 12e, and the B-port cavity 12c communicates with the B-port flow channel 12d is connected, when the flow channel 12e of port A is the oil inlet port of the two-way variable displacement plunger pump, the flow channel 12d of port B is the oil outlet port, and the flow chann...
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The invention discloses a coaxial and same-side compact type variable structure applicable to a bidirectional variable-displacement plunger pump, which is used for changing an inclined angle of an inclined disc of the bidirectional variable-displacement plunger pump. The structure comprises a variable valve element connecting rod pin, a variable valve element connecting rod, a variable spring, a variable valve element, a spring gasket, a variable valve sleeve and a screw plug, wherein the variable spring, the variable valve element and the variable valve sleeve are coaxially mounted on the same side of the inclined disc, and occupy a very small space volume. The size of a variable valve sleeve step hole and the size of three sections of external circles of the variable valve element can guarantee that the effective area of high-pressure oil on the variable valve element is not changed when an oil inlet and an oil outlet are exchanged due to reversing of the bidirectional variable-displacement plunger pump, that is to say that variable properties are the same in forward rotation and backward rotation process of the bidirectional variable-displacement plunger pump. According to the coaxial and same-side compact type variable structure, oil of the oil inlet and the oil outlet is directly introduced into the variable valve sleeve, so that a variable-displacement mechanism that the displacement of the bidirectional variable-displacement plunger pump is changed along linear changes of load pressure is realized, and the change amplitude is determined by the rigidity of the variable spring.
Description
technical field [0001] The invention relates to a variable structure of a plunger pump, in particular to a coaxial and same-side compact variable structure suitable for bidirectional variable displacement plunger pumps in the aviation field. Background technique [0002] With the evolution of the aircraft system from power fluid transmission to power transmission, electrostatic hydraulic actuators have replaced part of the traditional hydraulic system, and the bidirectional plunger pump in the electrostatic hydraulic actuator is also showing a high pressure, high speed, large Power, high power-to-weight ratio, compact and lightweight, low pressure pulsation and other directions of development. The reciprocating stroke of the actuator in the electrostatic hydraulic actuator is realized by the forward rotation and reverse rotation of the two-way plunger pump. The displacement of the two-way plunger pump required by the actuator under different load pressures is different, and ...
Claims
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IPC IPC(8): F04B1/12F04B53/00F04B53/10
CPCF04B1/12F04B53/00F04B53/10
Inventor 张军辉陈媛徐兵王倩囡黄晓琛葛耀峥
Owner ZHEJIANG UNIV