A Two-Dimensional Piston Pump Driven by Spatial Cam
A space cam, plunger pump technology, applied in the parts, pumps, pump elements and other directions of the pumping device for elastic fluid, can solve the problems of high cost, eccentric wear of the distribution plate, easy wear of the pump bearing, etc. The effect of improving performance, reducing manufacturing difficulty and cost
Active Publication Date: 2019-10-11
ZHEJIANG UNIV OF TECH
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Problems solved by technology
Due to the existence of sliding friction pairs such as cylinder block / distribution plate, ball joint, plunger / cylinder block hole, sliding shoe / swash plate, the design and manufacture of plunger hydraulic pumps are difficult and costly
In addition, the friction pair of the swash plate / slipper and the cylinder body / distribution plate bears a large unbalanced hydrostatic pressure. When the friction pair moves relatively, the pv value of the friction pair limits the working pressure or the increase of the working speed
In addition, the pump bearing is prone to wear under the action of the overturning moment, which in turn causes the eccentric wear of the valve plate
For the above reasons, the performance of the plunger hydraulic pump is not easy to be further improved.
Method used
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Embodiment Construction
[0023] The present invention will be further described below in conjunction with the accompanying drawings.
[0024] refer to Figure 1 to Figure 7 , a two-dimensional piston pump with space cam drive, including a front pump casing 16, a rear pump casing 13 and a middle pump section 14, and the front pump casing 16 and the rear pump casing 13 are connected to the middle section 14 of the pump by screws.
[0025] The pump shaft 1 is installed on the front pump casing 16, and the pump shaft 1 transmits the input power to the space cam / taper roller transmission mechanism through the lever mechanism. The pump middle section 14 includes a pump body, a pump sleeve 8, a concentric ring 24, a pump Core 9 and space cam / taper roller transmission mechanism. The center of rotation of the pump shaft 1 coincides with the pump core 9 . The axial groove of the plunger on the pump core 9, the window on the pump sleeve 8 and the undercut groove in the center hole of the pump body constitute t...
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The invention discloses a two-dimensional plunger pump driven by space cams. The two-dimensional plunger pump driven by the space cams comprises a front pump shell, a rear pump shell and a pump middlesection, wherein the front pump shell and the rear pump shell are both connected with the pump middle section. A pump shaft is installed on the front pump shell, and the pump shaft transmits the input power to space cam / taper roller drive mechanisms through a rod pushing mechanism. The pump middle section comprises a pump body, a pump sleeve, a concentric ring, a pump core and the space cam / taperroller drive mechanisms, the pump shaft coincides with the rotary center of the pump core, and an axial slot of a plunger on the pump core, a window on the pump sleeve and an undercutting groove in acentral hole of a pump body form a self-matched flow structure of the two-dimensional plunger pump. The two space cam / taper roller drive mechanisms are installed on both sides of the pump body separately, and the two space cams are connected with both sides of the pump core separately. The two-dimensional plunger pump driven by the space cams improves the performance of a hydraulic plunger pump and reduces the manufacturing difficulty and cost.
Description
technical field [0001] The invention relates to a hydraulic plunger pump, belonging to hydraulic pumps and hydraulic motors in the field of fluid transmission and control. Background technique [0002] Various types of plunger hydraulic pumps have similar working principles, that is, several plungers are embedded in the cylinder hole, and as the pump shaft rotates, they are constrained by the swash plate (or spherical hinge or eccentric shaft or multi-action inner curve ring, etc.) Next, the plunger reciprocates relative to the cylinder in sequence, forming a periodically changing working volume in the cylinder hole, and distributing flow through the valve or valve disc. Among all kinds of hydraulic pumps with plunger structure, the swash plate end face distribution structure is the most representative and widely used. The structural feature of the swash plate type end face distribution hydraulic pump is that the distribution plate, the through shaft structure and the swash...
Claims
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IPC IPC(8): F04B1/14F04B1/12F04B53/20F04B53/00
Inventor 邢彤阮健王勇虞儒敏
Owner ZHEJIANG UNIV OF TECH