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Axial piston motor

An axial plunger motor and plunger technology, which is applied in the field of axial plunger motors, can solve the problems of reduced device performance and increased leakage, and achieves the effect of preventing performance degradation

Inactive Publication Date: 2015-02-25
KAWASAKI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, if the gap is enlarged in order to ensure the amount of hydraulic oil passing through the radially outer side of the plunger 103, there is a problem that the leakage of the hydraulic oil from the cylinder 102a increases and the performance of the device itself decreases.

Method used

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Embodiment Construction

[0035] Hereinafter, the present invention will be described in detail using the illustrated embodiments.

[0036] figure 1 It is a sectional view showing an axial piston motor according to an embodiment of the present invention. Such as figure 1 As shown, the motor includes: a housing 1 ; a drive shaft 3 , which is rotatably mounted on the housing 1 via a bearing 2 ; and a cylinder 4 , which is fixed to the drive shaft 3 .

[0037] The cylinder block 4 has a plurality of cylinders 40 arranged in the circumferential direction. The plurality of plungers 5 are fitted into the plurality of cylinders 40 so as to be able to move forward and backward freely in the plurality of cylinders 40 .

[0038] The tip of the plunger 5 is formed into a spherical shape and connected to a shoe 6 . The shoe 6 is supported on a swash plate 7 which has been positioned relative to the housing 1 . The swash plate 7 has a tiltable surface with respect to the drive shaft 3 , and supports the plur...

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PUM

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Abstract

On an inner surface of a housing, a nozzle for jetting operation oil is provided at a position opposite to an outer circumferential surface of a cylinder block. With this configuration, by spraying the operation oil from the nozzle to the outer circumferential surface of the cylinder block during rotation of the cylinder block, this operation oil can remove frictional heat generated by sliding between a piston and a cylinder, and seizure of the piston and seizure of the cylinder can be prevented.

Description

technical field [0001] The invention relates to an axial piston motor. Background technique [0002] Conventionally, as an axial piston motor, there is an axial piston motor described in Japanese Patent No. 4828371 (Patent Document 1). Such as Figure 6 As shown, the axial piston motor includes: a housing 100; a drive shaft 101, which is rotatably mounted on the housing 100; a cylinder 102, which is fixed to the drive shaft 101; a plunger 103, which is A cylinder 102 a fitted in the cylinder body 102 to be able to advance and retreat freely; and a swash plate 104 supporting the plunger 103 via a shoe 105 . Then, the cylinder 102 and the drive shaft 101 are rotated by reciprocating the plunger 103 by supplying hydraulic oil to the cylinder 102a. [0003] In addition, when the plunger 103 reciprocates, heat is generated on the inner surface of the cylinder 102 a due to friction between it and the plunger 103 . This heat generation depends on the contact pressure between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03C1/253
CPCF04B1/2064F04B1/2035F04B1/122F03C1/0644F03C1/0663F03C1/0668F04B53/18F03C1/0602F03C1/0652F04B1/2078
Inventor 舩坂新山崎努
Owner KAWASAKI HEAVY IND LTD