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Tractor plowing depth control hydraulic system and method

A technology for hydraulic systems and tractors, applied to mechanical equipment, fluid pressure actuators, servo motors, etc., to achieve precise displacement control, cost savings, and reduced pressure loss

Pending Publication Date: 2022-05-06
NANJING WEIFU JINNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a tractor plow depth control hydraulic system and method, thereby solving the aforementioned problems existing in the prior art

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  • Tractor plowing depth control hydraulic system and method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0022] A tractor plow depth control hydraulic system, such as figure 1 As shown, it includes a speed control module, a pressure compensation module, and a reversing module. The tractor oil pump is connected to the input end of the speed control module, the output end of the speed control module is connected to the input end of the reversing module, and the output end of the speed control module is also connected to the input end of the reversing module. The rod chamber of the tractor plow depth control cylinder is connected through a special valve group, the first port of the reversing module is connected with the rodless chamber of the tractor plow depth control cylin...

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Abstract

The invention discloses a tractor plough depth control hydraulic system and a tractor plough depth control hydraulic method, which are characterized in that through the combination of electromagnetic directional valves, two inherent proportional speed regulating valves in the current industry application are reduced to one, and stepless speed regulation of plough depth control ascending and descending is realized by using one proportional speed regulating valve; the two two-position two-way electromagnetic directional valves are combined to replace a proportional speed regulating valve, the pressure compensation function of proportional decline is added, cost is saved, and therefore the product is more competitive. The pressure compensation function is achieved for rising and falling of plow depth control, oil inlet speed regulation is adopted for rising and falling, existing oil return speed regulation during falling is replaced, and therefore displacement control is more accurate and more sensitive, and pressure loss is reduced. The plough depth control of the tractor is more accurate and sensitive, and the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of plow depth control methods, and in particular relates to a tractor plow depth control hydraulic system and method. Background technique [0002] In the prior art, agricultural tractors generally use an electronically controlled lifter with a proportional speed regulating valve, but the current universal electronically controlled lifting system usually uses two proportional speed regulating valves, and the cost is relatively high. And when the plow deep oil cylinder is lowered, the proportional speed regulation has no pressure compensation function. The disadvantage is that when the oil cylinder is lowered, the displacement control is not precise enough, and the sensitivity of the proportional valve displacement control is poor. If a pressure compensating valve is added, the cost will increase. In addition, when the oil cylinder is lowered, the oil return speed is used, and the pressure loss is relatively...

Claims

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Application Information

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IPC IPC(8): F15B11/04F15B11/16F15B13/06
CPCF15B11/04F15B11/16F15B13/06
Inventor 张学君刘杰龚松青
Owner NANJING WEIFU JINNING
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