Slipper used for plunger type hydraumatic pump

Abstract

The invention relates to a slipper.used for a plunger type hydraumatic pump. The slipper comprises a slipper body, wherein one end of the slipper body is provided with a spherical closing port which is matched with a plunger bulb, and the other end of the slipper body is provided with a flat surface contacted with a wobble disc; and the middle of the flat surface has a groove, the middle of the groove has a damping hole, and the damping hole is communicated with the spherical closing port. The slipper is characterized in that the edge of the groove is provided with an annular inner support belt, the annular support belt is provided with a first oil port, the periphery of the annular inner support belt is provided with an annular seal belt, and an annular oil groove is reserved between the annular seal belt and the annular inner support belt; and the periphery of the annular seal belt is provided with an annular outer support belt, the annular outer support belt is provided with a second oil port and a third oil port, and an annular outer oil groove is reserved between the annular outer support belt and the annular seal belt. The slipper provided by the invention has the advantages that a good oil film and good static pressure are established between the slipper and the wobble disc, the problems such as eccentric wear, deformation, slipper dropping and slipper loosing are solved, the reliability of the slipper is improved, and further, the service life and the efficiency of a plunger pump are improved.

Description

Technical field [0001] The invention relates to a sliding shoe for a plunger type hydraulic pump, which is suitable for the field of engineering machinery and belongs to the technical field of hydraulic components. Background technique [0002] Plunger hydraulic pumps have the advantages of high parameters, high efficiency, long life, convenient variables, etc., and are widely used in the field of modern construction machinery. One of the key problems to improve the plunger hydraulic pump is to design the friction pair in the plunger pump reasonably to form an appropriate oil film, reduce wear, reduce temperature rise, and improve life and reliability. In the plunger pump, the sliding shoe and the swash plate are a pair of key friction pairs, which directly affect the efficiency and reliability of the pump. The prior art shoes such as figure 1 As shown, a shoe body 1a is included. One end of the shoe body 1a is provided with a spherical constriction 2a that matches the plunger b...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a sliding shoe for a plunger hydraulic pump, which can establish a good oil film and static pressure between the sliding shoe and the swash plate, and solve the problem of eccentric wear of the sliding shoe during work. , Deformation, boot off, loose boots and other problems, improve the reliability of the sliding shoe, thereby improving the life and efficiency of the plunger pump

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