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Straight-axle axial plunger variable motor device with constant voltage control

A technology of constant pressure control and variable motor, used in reciprocating piston engines, variable capacity engines, machines/engines, etc., can solve the problem of long variable response time, and achieve the effect of improving variable response time and improving variable response time.

Inactive Publication Date: 2020-09-22
AVIC LIYUAN HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing technology has the problem of long variable response time

Method used

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  • Straight-axle axial plunger variable motor device with constant voltage control
  • Straight-axle axial plunger variable motor device with constant voltage control
  • Straight-axle axial plunger variable motor device with constant voltage control

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and embodiment the present invention will be further described, but not as the basis of limiting the present invention.

[0016] Example. A direct-shaft axial piston variable motor device with constant pressure control, which is composed of Figure 1 to Figure 3 As shown, it includes variable variable motor 1, the working oil port of variable variable motor 1 is connected with small variable piston 2 and constant pressure control valve 3 through check valve, constant pressure control valve 3 is connected with large variable piston 4, constant pressure control valve 3 is also It is connected with an oil return port and a control oil port; the small variable displacement piston 2 is also connected with a return spring 5 .

[0017] The variable displacement motor 1 is provided with a swash plate 6, and one end of the swash plate 6 is provided with a plunger 7 and a rotor 8; the small variable displacement piston 2 and the lar...

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Abstract

The invention discloses a straight-axle axial plunger variable motor device with constant voltage control. The variable motor device comprises a variable motor (1), wherein a working oil port of the variable motor (1) is connected with a small variable piston (2) and a constant voltage control valve (3) through one-way valves, the constant voltage control valve (3) is connected with a large variable piston (4), and the constant voltage control valve (3) is further connected with an oil return port and a control oil port; and the small variable piston (2) is further connected to a return spring(5). The double-variable piston structure is adopted, the large variable piston and the small variable piston are respectively arranged on the two sides of a swash plate, a cylindrical head of a swash plate arm rotates around the center line of a runway of the swash plate under the driving of the variable pistons, so that displacement change is achieved by changing the inclined angle of the swashplate. A constant-voltage control valve mechanism is integrated, and only the swash plate rotates under the driving of the variable piston, so that the variable response time of the motor can be increased, and meanwhile the constant power output can also be realized when the motor works in a variable interval.

Description

technical field [0001] The invention relates to a direct-shaft axial plunger variable motor device, in particular to a direct-shaft axial plunger variable motor device with constant pressure control. Background technique [0002] Axial piston motor is a commonly used hydraulic actuator. When the output shaft of the motor drives the load to rotate, the load is usually in a changing state, which requires adjusting the pressure difference between the inlet and outlet of the motor or changing the displacement to increase the output torque to match the load. . At present, the structure of the oblique axis constant pressure axial piston motor in construction machinery is to change the displacement of the motor by changing the inclination angle of the swash plate. When the inclination angle of the swash plate changes, the rotor, For parts such as plunger and central rod, there are many parts that rotate with the swash plate, and the total mass is large. Therefore, in terms of mass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01B3/00F01B3/10
CPCF01B3/0005F01B3/0008F01B3/0017F01B3/101
Inventor 杨华刘雪波刘雨马吉光赵承钊
Owner AVIC LIYUAN HYDRAULIC