Hydraulic control method of hydraulic motor rotating speed and device thereof

A hydraulic motor and rotational speed technology, which is applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve the problems of increased human manipulation, unstable work, and poor ability of the motor to resist load fluctuations, so as to achieve fuel economy. Effect
CN101398019AInactive Publication Date: 2009-04-01AVIC LIYUAN HYDRAULIC
0 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
AVIC LIYUAN HYDRAULIC
Publication Date
2009-04-01
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a hydraulic motor rotating speed liquid control method and a device thereof. The method utilizes external control oil pressure to control the on/off of the big or small cavity oil circuit of the motor variable case by a rotating speed liquid control valve, thereby achieving the purpose of adjusting the rotating speed and torque of the hydraulic motor. When the rotating speed of the hydraulic motor is not more than the setting value, the oil circuit to the big cavity is cut off and the hydraulic motor is in a state of high flow rate and maximum torque; when the rotating speed of the hydraulic motor is higher than the setting value but not a rated value, the big cavity oil circuit is communicated with the rotating speed liquid control valve and the flow rate and torque of the hydraulic motor are decreased gradually; when the rotating speed of the hydraulic motor exceeds the rated rotating speed, the oil pressure of the hydraulic motor oil inlet is increased and the big cavity oil circuit is cut off by the rotating speed liquid control valve, thereby gradually increasing the flow rate and torque of the hydraulic motor. The method satisfies the self-adaptive ability requirement of the hydraulic driving system of engineering tractors.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a hydraulic control system, in particular to a hydraulic motor speed control method and device thereof. Background technique

[0002] The traction hydraulic system of engineering vehicles (machinery) has requirements for motors. First, the motor and hydraulic system should work in the high-efficiency medium-high pressure range most of the time, so that the working capacity of the components can be fully utilized, and the cost is suitable and sufficient. The second is to make the motor and vehicle self-adaptive to load changes, work at high speed when the load is small to improve work productivity, and work at low speed when the load is large to improve traction, that is, the vehicle drive system automatically adjusts the walking speed according to the change of the external load To adapt to it, the limited power of the engine is adapted to a large range of external load changes, and the power is fully used without overloading. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More