The Development of Hydraulic Control System for Large Highland Hydraulic Intelligent Pesticide Spraying Machine

2014 ◽  
Vol 945-949 ◽  
pp. 968-971
Author(s):  
Zhi Wei Wang ◽  
Lu Sun ◽  
Jing Hui Li

In this paper, we research and develop a new machine called large highland hydraulic intelligent pesticide spraying machine. The pesticide spraying machine adopts hydraulic electric control technology, and adapts to all tall or short crops for pesticide spraying. The machine employs large intelligent computer control technology, and adjusts the spraying dose according to the pest density measured by intelligent sensors. Furthermore, the machine adopts the technology of self-filter and dilutes the pesticide with absorption water automatically. This paper presents hydraulic control system, and puts forward the hydraulic control principle of the walking part, the hydraulic control principle of the work part and main technical parameters.

2011 ◽  
Vol 201-203 ◽  
pp. 425-428
Author(s):  
Ming Xin Lu ◽  
Ming Feng Lv ◽  
Ju Guang Wang ◽  
Min Li ◽  
Jie Zhao ◽  
...  

The underlying way to reduce accidents is reducing the number of workers on the coal face. Automatic mining can realize this object. The key for unmanned automatic mining is the application of electro-hydraulic control technology used on workface support. The electro-hydraulic control system applied in Wannian colliery has following function: Automatic moving , lowering and rising of support, monitoring and display of roof pressure; Shearer locating, controlling of cutting height and shearer speed, remote operation and procedure running; Automatic tension of conveyor chain, conveyor operation with constant power and monitoring and fault diagnosis of conveyor speed reducer.


2012 ◽  
Vol 233 ◽  
pp. 76-79
Author(s):  
Yong Gang Yang ◽  
Jun Sun ◽  
Meng Tao Yang

This paper introduces the hydraulic control system design for the change-wheel garage of Chongqing light rails through analysis of three-stage cylinder synchronization circuit for lifting bodies, and optimizing the design of the slewing mechanism with respect to the hydraulic servo control system of digital cylinder. The results improved the smoothness in the process of changing wheel lifting and the rotary accuracy of the rotary mechanism. Design on the PLC control system of the system is also included as part of this paper.


2012 ◽  
Vol 151 ◽  
pp. 510-513 ◽  
Author(s):  
Yu Peng Yao ◽  
Ying Shi ◽  
Ji You Fei

Configuration technology is a new technology for monitoring in the current society; it is the result of the development of computer control technology. To traffic light control system, it is to combine the use of configuration technology and procedures related to PLC, and through software simulation and traffic lights light changes, traffic light control system could achieve the monitoring problem, and if the system is in good condition, its application can save a lot of labor powers and materials.


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