Single-stage planetary gear backflow type hydraulic mechanical stepless transmission system

A planetary gear and hydraulic machinery technology, applied in the field of mechanical transmission, can solve problems such as unsatisfactory work and low overall efficiency, and achieve the effects of wide variation range, reduced efficiency, and large torque ratio.

Pending Publication Date: 2021-02-19
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to structural design problems, there are also defects such as low overall efficiency and unsatisfactory work.

Method used

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  • Single-stage planetary gear backflow type hydraulic mechanical stepless transmission system
  • Single-stage planetary gear backflow type hydraulic mechanical stepless transmission system
  • Single-stage planetary gear backflow type hydraulic mechanical stepless transmission system

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Embodiment Construction

[0029] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0030] like figure 1 and figure 2 As shown, a single-stage planetary gear return type hydraulic mechanical stepless transmission system mainly includes a power input device 1, a planetary row 3, a hydraulic return device 4 and a power output device 5. The power input device 1 includes a power input device driven by an engine 1a. The input shaft 1b, the hydraulic return device 4 includes a variable displacement pump 4a and a hydraulic quantitative motor 4b, and the planetary row 3 includes a planetary carrier 3a, a sun gear 3b, a planetary gear 3c and a ring gear 3d which are adapted to each other.

[0031] The output power of the input shaft 1b is transmitted to the planetary gear 3c through the planet carrier 3a, and the planetary gear 3c transmits part of the power to the power output device 5 through the ring gear 3d, which is output from the pow...

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PUM

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Abstract

The invention discloses a single-stage planetary gear backflow type hydraulic mechanical stepless transmission system which comprises a power input device, a planet row, a hydraulic backflow device and a power output device. The power input device comprises an input shaft driven by an engine, and the hydraulic backflow device comprises a variable pump and a hydraulic constant displacement motor. The planet row comprises a planet carrier, a sun gear, a planet gear and a gear ring which are matched with one another. By adoption of the single-stage planetary gear backflow type hydraulic mechanical stepless transmission system, the single-stage planetary gear backflow type hydraulic mechanical stepless transmission system has more advantages in the aspects of torque characteristics and efficiency characteristics; and meanwhile, the backflow transmission speed ratio change range is wider, and the torque conversion ratio is larger.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, in particular to a single-stage planetary gear return type hydraulic machinery stepless transmission system. Background technique [0002] Continuously variable transmission (CVT) is an ideal transmission form recognized by the world, which can make the vehicle work in the ideal working area all the time, greatly improving the economy of the vehicle. Compared with the mechanical transmission with stepped gears, the continuously variable transmission has a wider range of speed ratio changes, which makes the vehicle more adaptable to different working environments. [0003] Hydraulic stepless transmission represented by hydraulic pump-motor has attracted extensive attention because of its small size and light weight of hydraulic components and its outstanding advantages compared with other forms of stepless transmission (mechanical friction type, hydraulic power, electric power). H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H47/08F16H57/023F16H57/08F16H63/30
CPCF16H47/08F16H57/023F16H57/08F16H57/082F16H63/30
Inventor 孙冬野夏宇胡明辉胡建军吴卓航姜海飞
Owner CHONGQING UNIV
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