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A three-planetary three-stage hydraulic-mechanical continuously variable transmission for a high-power tractor

A technology of continuously variable transmission and hydraulic machinery, which is applied in the direction of mechanical equipment, motor vehicles, transmission devices, etc., and can solve the problems that cannot meet the various operating modes of high-power tractors, the change of speed ratio is not symmetrical, and there is no speed regulation range and other problems, to achieve the effect of meeting the needs of low-speed and high-load operations, wide stepless speed regulation range, and high torque output

Active Publication Date: 2022-06-03
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current high-power tractor three-stage three-stage hydraulic-mechanical continuously variable transmission has no symmetry in the speed ratio changes between the forward stage and the reverse stage, and does not have the same speed regulation range, which cannot meet the various operating modes of high-power tractors.

Method used

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  • A three-planetary three-stage hydraulic-mechanical continuously variable transmission for a high-power tractor
  • A three-planetary three-stage hydraulic-mechanical continuously variable transmission for a high-power tractor
  • A three-planetary three-stage hydraulic-mechanical continuously variable transmission for a high-power tractor

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Experimental program
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Effect test

Embodiment Construction

[0025] In the above, the clutch C1 is the first stage clutch, the clutch C2 is the second stage clutch, and the clutch C3 is the third stage clutch

[0028] Referring to Figure 2: when the forward one stage is working: the clutch C1, the clutch CV are engaged, the other three clutches are disengaged,

[0029] Referring to Figure 3: when the forward second stage is working: the clutch C2, the clutch CV are engaged, the other three clutches are disengaged,

[0030] Referring to Figure 4: when the forward three-stage operation is in operation: the clutch C3 and the clutch CV are engaged, the other three clutches are disengaged,

[0031] Referring to FIG. 5: when working backwards for one stage: clutch C1 and clutch CR are engaged, the other three clutches are disengaged,

[0032] Referring to Figure 6: when the second stage is reversed, the clutch C2 and the clutch CR are engaged, and the other three clutches are disengaged.

[0033] Referring to Figure 7: when the three-stage backwar...

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Abstract

The invention discloses a three-planet three-stage hydraulic-mechanical continuously variable transmission for a high-power tractor, which comprises a variable pump-variable motor system, a clutch system, a converging mechanism, a gear pair and a shaft system. The variable pump-variable motor system The system includes a variable pump and a variable motor, the variable pump is connected to the variable motor; the clutch system includes clutch C1, clutch C2, clutch C3, clutch CV and clutch CR, clutch C1 is connected with clutch C2, clutch C3 is connected with clutch C1, clutch CV is connected to clutch CR. The three-planetary three-stage hydraulic-mechanical continuously variable transmission of this high-power tractor has the same speed regulation characteristics in its forward and reverse stages. The hydraulic power is driven by a variable pump-variable motor. torque characteristics.

Description

A three-planetary three-stage hydraulic-mechanical continuously variable gearbox for a high-power tractor technical field The present invention relates to the technical field of high-power tractors, in particular to a three-stage three-planetary row of a high-power tractor Type hydromechanical continuously variable transmission. Background technique The forward stage and backward of the current high-power tractor three-planetary three-stage hydraulic-mechanical continuously variable gearbox The speed ratio changes of the tiers are not symmetrical, and they do not have the same speed regulation range, which cannot meet the various tasks of high-power tractors. business model. SUMMARY OF THE INVENTION The object of the present invention is to provide a three-planetary three-stage hydraulic machinery stepless speed change of a kind of high-power tractor The forward and reverse stages have the same speed regulation characteristics. The hydraulic power is driven by a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H47/04
CPCF16H47/04Y02T10/62
Inventor 鲁植雄周华栋张海军钱进肖茂华陆凯陈元孙晓旭钱煜
Owner NANJING AGRICULTURAL UNIVERSITY
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