Unlock instant, AI-driven research and patent intelligence for your innovation.

Dual-mode electro-hydraulic drive system for roadheader cutter head

A drive system and dual-mode technology, applied in mechanical equipment, servo meter circuits, fluid pressure actuators, etc., can solve the high cost of variable displacement hydraulic motors, and the work efficiency and reliability of variable displacement hydraulic motor systems need to be improved and other issues to achieve high reliability and work efficiency, improve reliability and work efficiency, and low cost

Inactive Publication Date: 2018-05-08
ZHEJIANG UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main drive hydraulic system of the cutter head of the currently used roadheader completely uses multiple variable displacement hydraulic motors connected in parallel as the output of torque and speed. The cost of the variable displacement hydraulic motor is high, and the working efficiency and reliability of the variable displacement hydraulic motor system are low. needs to be improved

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dual-mode electro-hydraulic drive system for roadheader cutter head
  • Dual-mode electro-hydraulic drive system for roadheader cutter head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 As shown, the present invention includes a detachable fixed displacement hydraulic motor group, a non-separable fixed displacement hydraulic motor group, a variable displacement hydraulic pump group and main oil circuits A and B. The non-separable fixed-displacement hydraulic motor group includes multiple non-separable fixed-displacement hydraulic motors 7 connected in parallel to the main oil circuit, and the variable-displacement hydraulic pump group includes multiple variable-displacement hydraulic pumps connected in parallel to the main oil circuit 9. The variable-displacement hydraulic pump 9 is connected to the motor 8 through a coupling. The detachable fixed-displacement hydraulic motor group includes e detachable fixed-displacement hydraulic motors 5 and oil circuit on-off devices. Each detachable The fixed-displacement...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a cutter double-mode electro-hydraulic driving system of a development machine. The cutter double-mode electro-hydraulic driving system of the development machine comprises a variable displacement hydraulic pump group connected to a main oil way, a detachable constant displacement hydraulic motor group and an undetachable constant displacement hydraulic motor group. The variable displacement hydraulic pump group input the flow to the main oil way, two motor groups obtain the flow from the main oil way, and two revolving speed output modes are realized by the combined control of the detachable constant displacement hydraulic motor group and the undetachable constant displacement hydraulic motor group. The cutter double-mode electro-hydraulic driving system of the development machine is capable of achieving the goal of reducing the engineering cost, and improving the working efficiency and the reliability of the system.

Description

technical field [0001] The invention relates to the technical field of roadheaders, in particular to a dual-mode electro-hydraulic drive system for a roadheader cutter head. Background technique [0002] Roadheaders are widely used in tunnel construction projects and have made outstanding contributions to the country's infrastructure construction. The main drive hydraulic system of the cutter head provides the torque required for the excavation of the bottom layer when the roadheader is driving forward, and its output speed is an important factor affecting the speed of the roadheader. [0003] The main drive hydraulic system of the cutter head of the currently used roadheader completely uses multiple variable displacement hydraulic motors connected in parallel as the output of torque and speed. The cost of the variable displacement hydraulic motor is high, and the working efficiency and reliability of the variable displacement hydraulic motor system are low. needs to be imp...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/16E21D9/10
CPCE21D9/108F15B11/16F15B2211/20546
Inventor 龚国芳杨旭王超张亚坤段理文
Owner ZHEJIANG UNIV