Tilted variable axial piston device

Abstract

A variable displacement swash plate axial piston device is provided. A universal joint(90) is joined to a shaft(40) to rotate in circumferential direction of the shaft and has bearing outer races(94) joined to ends of extension parts thereof extending to three directions to freely rotate in circumferential directions of the extension parts, and a sliding sleeve 81, which has a joint hole for inserting the joint, is joined to the swash plate 70 to freely slide, and the bearing outer races coupling the position of the sliding sleeve to transfer power in the process that the sliding sleeve slides and rotates along the swash plate. According to the invention, when the piston is freely sliding-rotating on the swash plate as well as reciprocating, the piston will move along the axial line of an oil cylinder 51 in parallel by increasing turning angle of the piston rod which freely rotatablely joins to the sliding sleeve, and in this manner, the inclination angle can be further increased to prolong the stoke of the piston, so as to increase suction flow rate of the liquid and torque of a rotary shaft.

Description

technical field [0001] The present invention relates to a variable variable swash plate type axial piston device used in heavy equipment and various industrial fields, and more particularly to such a variable variable swash plate type axial piston device, that is, in order to convert a rotary motion into a linear motion or to convert a piston The linear motion of the linear motion is turned into a rotary motion, and the rotation angle of the piston connecting rod freely connected with the sliding sleeve is enlarged (when the piston device is reciprocating while sliding and rotating on a sloping plate with an inclined surface, the sliding sleeve Slide and rotate on the swash plate), so that the piston can move parallel to the axis that is the same as the axial direction of the oil cylinder. Since it is not limited by the rotation angle of the piston rod, the inclination angle of the swash plate can be further increased, thus It can extend the stroke distance of the piston, incr...

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Problems solved by technology

[0022] As a result, the service life of the oil cylinder 51 and the piston 53 is shortened sharply, so that the angle design of the swash plate 70 is limited, and the rotation angle of the sliding sleeve and the spherical axis of the piston 53 directly affects the reciprocating motion of the piston 53

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