Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Crawler excavator walking motor rotating speed control system and method
The invention provides a crawler excavator walking motor rotating speed control system and method, and relates to the technical field of walking motor rotating speed control, a swash plate limiting valve is added on the basis of control of an original two-point variable walking motor, and the swash plate limiting valve is controlled through a swash plate limiting valve control valve and a control oil way Pr2. When the motor is in small displacement, the swash plate limiting valve control valve is in the right position when the control oil way Pr2 has no hydraulic oil, at the moment, a swash plate limiting valve left oil cavity is in high pressure, the displacement of the motor is not changed, when the rotating speed of the motor needs to be increased, the control oil way Pr2 is connected, the swash plate limiting valve control valve is in the left position, and the swash plate limiting valve control valve is in the right position. The left cavity of the swash plate limiting valve drains oil through an oil tank, the swash plate limiting valve moves leftwards under the acting force of a spring, the angle of a motor swash plate is decreased, the displacement of the motor is decreased, and when the swash plate limiting valve is located at the limiting position of the left cavity, the displacement of the motor is minimum, and the rotating speed of the motor can be increased within a set range when the flow is unchanged.
本公开提供了一种履带式挖掘机行走马达转速控制系统及方法，涉及行走马达转速控制技术领域，在原有两点变量行走马达的控制基础上，增加一种斜盘限位阀，斜盘限位阀通过斜盘限位阀控制阀及控制油路Pr2控制，控制油路Pr2从第二单向阀后取系统高压油，当马达处于小排量时，斜盘限位阀控制阀在控制油路Pr2无液压油时处于右位，此时斜盘限位阀左油腔为高压，马达排量无变化，当需要马达转速增加时，接通控制油路Pr2油路，斜盘限位阀控制阀处于左位，斜盘限位阀左腔通邮箱泄油，斜盘限位阀在弹簧的作用力下向左移动，马达斜盘角度变小、马达排量减小，斜盘限位阀处于左腔极限位置时，马达排量最小，流量不变时可在设定范围内马达转速增加。
Crawler excavator walking motor rotating speed control system and method
The invention provides a crawler excavator walking motor rotating speed control system and method, and relates to the technical field of walking motor rotating speed control, a swash plate limiting valve is added on the basis of control of an original two-point variable walking motor, and the swash plate limiting valve is controlled through a swash plate limiting valve control valve and a control oil way Pr2. When the motor is in small displacement, the swash plate limiting valve control valve is in the right position when the control oil way Pr2 has no hydraulic oil, at the moment, a swash plate limiting valve left oil cavity is in high pressure, the displacement of the motor is not changed, when the rotating speed of the motor needs to be increased, the control oil way Pr2 is connected, the swash plate limiting valve control valve is in the left position, and the swash plate limiting valve control valve is in the right position. The left cavity of the swash plate limiting valve drains oil through an oil tank, the swash plate limiting valve moves leftwards under the acting force of a spring, the angle of a motor swash plate is decreased, the displacement of the motor is decreased, and when the swash plate limiting valve is located at the limiting position of the left cavity, the displacement of the motor is minimum, and the rotating speed of the motor can be increased within a set range when the flow is unchanged.
本公开提供了一种履带式挖掘机行走马达转速控制系统及方法，涉及行走马达转速控制技术领域，在原有两点变量行走马达的控制基础上，增加一种斜盘限位阀，斜盘限位阀通过斜盘限位阀控制阀及控制油路Pr2控制，控制油路Pr2从第二单向阀后取系统高压油，当马达处于小排量时，斜盘限位阀控制阀在控制油路Pr2无液压油时处于右位，此时斜盘限位阀左油腔为高压，马达排量无变化，当需要马达转速增加时，接通控制油路Pr2油路，斜盘限位阀控制阀处于左位，斜盘限位阀左腔通邮箱泄油，斜盘限位阀在弹簧的作用力下向左移动，马达斜盘角度变小、马达排量减小，斜盘限位阀处于左腔极限位置时，马达排量最小，流量不变时可在设定范围内马达转速增加。
Crawler excavator walking motor rotating speed control system and method
一种履带式挖掘机行走马达转速控制系统及方法
WANG ZHIJIE (Autor:in) / GUO ZHIMIN (Autor:in) / KONG WEITAO (Autor:in) / TAN HAO (Autor:in)
19.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02F
Baggern
,
DREDGING
Walking safety control method and system for crawler excavator and excavator
| Europäisches Patentamt | 2024