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Swing angle control mechanism for swash plate of plunger pump

A technology of control mechanism and plunger pump, which is applied to pumps, multi-cylinder pumps, pump components, etc., can solve problems such as low efficiency, inaccurate median characteristics, and asymmetric motor output speed, and achieve high control accuracy and manufacturing cost. Low, responsive effects

Active Publication Date: 2019-04-12
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the characteristics of the variable control mechanism determine the output characteristics of the plunger pump or combined pump motor. If the output characteristics of the variable control mechanism are incorrect, low efficiency, asymmetrical motor output speed, and inaccurate median characteristics will occur in product tests. failure

Method used

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  • Swing angle control mechanism for swash plate of plunger pump
  • Swing angle control mechanism for swash plate of plunger pump
  • Swing angle control mechanism for swash plate of plunger pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Such as figure 1 , providing a plunger pump swash plate swing angle control mechanism, including a housing 1, a joystick 4, a valve core 3, a valve sleeve 2, a connecting rod 7, a piston 10 and a control rod 11;

[0029] There are symmetrical left and right piston cavities in the housing, both of which are open cavities, and the openings of the left and right piston cavities are opposite, and the two ends of the piston are respectively supported in the left and right piston cavities, and the pistons One end closes the left piston chamber 8, the other end closes the right piston chamber 9, and the piston can slide left and right;

[0030] The piston is extended to form a connecting rod and a control rod. The control rod is used to connect with the plunger pump swash plate. When the piston slides left and right, the control rod will drive the plunger pump swash plate 12 to rotate;

[0031] The valve core is a cylinder, and in the middle of the cylinder, a symmetrical slo...

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PUM

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Abstract

The invention relates to a swing angle control mechanism for a swash plate of a plunger pump. The swing angle control mechanism comprises a housing, an operation rod, a valve core, a valve jacket, a connecting rod, a piston and a control rod, wherein a valve jacket route formed by the valve core can break over a control oil path, a left piston cavity or a right piston cavity, so that pressure balancing or compensation is realized. The swing angle control mechanism for the swash plate of the plunger pump has the characteristics of being capable of realizing pressure compression, high in controlaccuracy, acute in response and low in manufacturing cost.

Description

technical field [0001] The invention belongs to the field of plunger pump swash plate control and relates to a plunger pump swash plate swing angle control mechanism. Background technique [0002] The mechanical control method of the hydraulic plunger pump generally determines the flow direction of the pressure oil through the opening of the inner and outer valves, thereby pushing the movement direction of the servo piston, and then controlling the swing angle of the pump swash plate. It is characterized by one-way control, the control pressure depends on the inlet pressure of the control oil circuit, or the eccentric shaft set on it drives the lever to perform manual throttling. The response speed is slow, the adjustment is difficult and other problems. [0003] The variable control mechanism is used to control the swash plate of the swash plate type axial variable piston pump. Through the movement direction and stroke of the piston, the rotation direction and inclination ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/26F04B53/10
CPCF04B1/122F04B1/26F04B53/10
Inventor 侯晓军
Owner XIAN AERO ENGINE CONTROLS