Hydraulic transmission control system of tractor in hilly area and control method

A hydraulic transmission and control system technology, applied in fluid pressure actuators, mechanical equipment, servo motors, etc., can solve problems such as difficulty in turning and turning, large ground fluctuations, poor work quality, etc., to improve steering flexibility and consistent sowing High performance and reduced turning radius

Pending Publication Date: 2018-11-20
NANJING AGRI MECHANIZATION INST MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large undulations of the ground, small and irregular fields, and many steep and curved slopes, conventional tractors have problems such as poor passability, difficulty in turning around, and poor operating quality when operating in hilly areas. bottleneck

Method used

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  • Hydraulic transmission control system of tractor in hilly area and control method
  • Hydraulic transmission control system of tractor in hilly area and control method
  • Hydraulic transmission control system of tractor in hilly area and control method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] see figure 1, the hydraulic transmission system of tractors in hilly and mountainous areas mainly includes five parts, namely: (1) travel drive system; (2) multi-mode steering system; (3) slope adaptive system; (4) lift and level profiling system ; (5) Intelligent seeding system.

[0024] The power element of the walking drive system is a two-way variable plunger pump 4, one end of the two-way variable plunger pump 4 is connected to the synchronous motor 5, and three two-position two-way electromagnetic reversing valves 6, 7, 8 are respectively installed in parallel on the side of the synchronous motor 5. Four oil outlets and three two-position two-way electromagnetic reversing valves are always connected when not powered, and disconnected when powered. The actuators are 4 wheel drive motors.

[0025] The power element of the multi-mo...

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Abstract

The invention relates to a hydraulic transmission control system of a tractor in a hilly area. A walking driving system monitors if rim motors slip to return to a central processing unit; if so, the central processing unit distributes the flows of four rim motors according to equal proportion; a multi-mode steering system controls a front wheel steering oil cylinder and a rear wheel steering oil cylinder to act to realize different steering modes; a slope self-adaption system obtains upslope and downslope states through monitoring values of a horizontal sensor, and judges and controls extension of piston rods of all hydraulic cylinders to realize leveling of a frame through monitoring values of a displacement sensor; lifting and horizontal profiling systems adjust and lift the hydraulic cylinders to a target height value, and adjust horizontal profiling hydraulic cylinders to a target horizontal position; an intelligent sowing system is provided with a rotating speed sensor mounted ona tractor rear wheel rim motor; and a central control unit adjusts the rotating speed of a sowing driving motor according to the rotating speeds of the rim motors. The system performs overall centralized control on hydraulic transmission of the tractor in the hilly area, and is higher in intelligence level.

Description

technical field [0001] The invention relates to a hydraulic transmission system, in particular to a tractor hydraulic transmission control system and control method in hilly and mountainous areas. Background technique [0002] The area of ​​hilly and mountainous areas accounts for more than 1 / 3 of my country's land area. According to statistics, grain production in hilly and mountainous areas accounts for 55% of the country's total, and oil production accounts for about 49%. very important position. However, due to the large undulations of the ground, small and irregular fields, and many steep and curved slopes, conventional tractors have problems such as poor passability, difficulty in turning around, and poor operating quality when operating in hilly areas. bottleneck. Contents of the invention [0003] The purpose of the present invention is to provide a hydraulic transmission control system and control method for tractors in hilly and mountainous areas. The hydraulic ...

Claims

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Application Information

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IPC IPC(8): F15B11/16F15B11/20
CPCF15B11/16F15B11/20
Inventor扈凯张文毅纪要李坤严伟祁兵余山山
OwnerNANJING AGRI MECHANIZATION INST MIN OF AGRI