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A multi-stage multi-mode continuously variable transmission for high-power vehicles

A continuously variable transmission, multi-mode technology, applied in the direction of transmission, components with teeth, gear transmission, etc., can solve the problems of low processing and assembly accuracy requirements, high performance requirements of hydraulic components, complex control, etc., and achieve a simple structure. The effect of compactness, increased shifting range, and flexible switching control

Active Publication Date: 2021-05-04
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second type of structure is simple and the number of parts is small, but it requires high performance of hydraulic components
The third form requires low processing and assembly precision, but complex control
Single use of mechanical transmission or hydraulic transmission is difficult to perfectly meet the requirements of medium and large construction machinery for the transmission system

Method used

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  • A multi-stage multi-mode continuously variable transmission for high-power vehicles
  • A multi-stage multi-mode continuously variable transmission for high-power vehicles
  • A multi-stage multi-mode continuously variable transmission for high-power vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1. The transmission process of the first torque-fraction-combined-speed hydraulic-mechanical hybrid mode of a multi-stage multi-mode continuously variable transmission for high-power vehicles is as follows: specifically, as figure 2 As shown, the power transmitted from the engine is transmitted to the first hollow shaft 50 through the first gear 2 and the second gear 49, the sixth gear clutch 48 is closed, and the power is realized at the front ring gear 52 through the sixth gear 47. All the power is transmitted to the hydraulic circuit through the fifth gear 6 and the closed fifth gear clutch 7, and then the front sun shaft clutch 35 is combined, and the power is transmitted to the front through the seventeenth gear 15, the eighteenth gear 34, and the front sun shaft 55. The sun gear 53; the other power is located on the front ring gear 52; after the two powers converge on the front planetary row, they pass through the front planet carrier 10, the second hol...

Embodiment 2

[0033] Embodiment 2. The transmission process of the second split-torque combined-speed hydraulic-mechanical hybrid mode of a multi-stage multi-mode continuously variable transmission for high-power vehicles is: specifically, as image 3 As shown, the power transmitted from the engine is transmitted to the first hollow shaft 50 through the first gear 2 and the second gear 49, the sixth gear clutch 48 is closed, the eighth gear clutch 45 is closed, and the third gear clutch 4 is closed, so that the power Moment splitting is realized at the first hollow shaft 50; power is transmitted to the hydraulic circuit through the front ring gear 52 and the fifth gear 6, and the rear sun shaft clutch 33 is combined, and then the power is transmitted to the rear sun gear through the rear sun shaft 22 27; One way of power is transmitted to the first ninth gear 12 from the right and the tenth gear 43 from the right through the second hollow shaft 46, and the first synchronizer 42 on the right ...

Embodiment 3

[0037] Embodiment 3. The transmission process of the split-speed converging moment hydraulic-mechanical hybrid mode of a multi-stage multi-mode continuously variable transmission for high-power vehicles is: specifically, as Figure 4 As shown, the power transmitted from the engine is transmitted to the first hollow shaft 50 through the first gear 2 and the second gear 49, the sixth gear clutch 48 is closed, the third gear clutch 4 is closed, and the power is transmitted to the front planetary row to realize the speed Divide; One way of power passes through the front sun gear 53, the front sun shaft 55, the fourth gear 3, the third gear 5, and the closed third gear clutch 4, and the power is transmitted to the hydraulic circuit. The nineteenth gear clutch 18 is combined, and then the power The nineteenth gear 17, the twentieth gear 20, and the third hollow shaft 28 are transmitted to the rear planet carrier 26; all the power is transmitted to the second ninth gear 12 from the ri...

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Abstract

The invention relates to the field of variable speed transmission equipment for high-power vehicles, in particular to a multi-stage multi-mode continuously variable transmission for high-power vehicles. It includes the casing and the double-planetary mechanical transmission and the hydraulic transmission arranged in parallel in the casing. There are also devices in the casing for controlling the separate speed output of the double-planetary mechanical transmission, controlling the separate speed output of the hydraulic transmission or controlling the double-planetary mechanical transmission. A mode gear switching execution system for hybrid transmission and hydraulic transmission output. The invention not only can realize multi-stage and wide-range stepless speed regulation performance, but also can meet the multi-mode requirements of high-power vehicles running under different working conditions.

Description

technical field [0001] The invention relates to the field of high-power vehicle transmission equipment, in particular to a multi-stage multi-mode continuously variable transmission for high-power vehicles. Background technique [0002] At present, domestically produced high-power vehicles generally adopt stepped shifting. The disadvantages are that there are many working gears, complex structure, discontinuous transmission ratio and low comfort. When the vehicle is faced with different operating conditions, the engine cannot always be in the most ideal working condition, so that the energy saving and environmental protection of the vehicle cannot be further realized. At present, foreign high-power vehicles are mainly equipped with segmented power-split gearboxes. In order to realize the speed regulation, section change and direction change of the gearbox, there are mainly three structural forms: (1) fixed-axis splitter device + integrated hydrostatic transmission device + h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/76F16H57/023F16H61/40
CPCF16H3/76F16H57/023F16H61/40
Inventor 曹付义李豪迪张风丽马可王浩然崔梦凯李金龙
Owner HENAN UNIV OF SCI & TECH
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