A transmission mechanism of a hydraulic transmission

A technology of hydraulic transmission and transmission mechanism, which is applied to transmission elements, transmission devices, vehicle gearboxes, etc., can solve the problems of large difference, unstable operation, and shift impact, etc., and achieves a wide range of transmission ratios, reasonable structure and setting uniform effect

Active Publication Date: 2017-04-19
贵州凯星液力传动机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although individual wide speed ratio transmissions have a gear with a maximum gear ratio greater than 7, the speed ratio difference between it and its adjacent gears is relatively large, which is reflected in the output speed, which means that the output speed fluctuates greatly, and it cannot be adjusted for low speed conditions. With fine adjustment, the working machine is prone to shifting shocks and unstable work during operation
For example, the speed ratios of the five gears of the planetary gear transmission mechanism of the HT750DRD hydraulic transmission produced by the American ALLISON company are: i1=7.97, i2=3.19, i3=2.07, i4=1.4, i5=1, and the first gear ratio The speed ratio of the second gear is quite different, which is not conducive to the operation of some working machines that need to switch between high and low speeds frequently

Method used

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  • A transmission mechanism of a hydraulic transmission
  • A transmission mechanism of a hydraulic transmission

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Embodiment

[0022] First gear, when the first brake Z1 and the fourth brake Z4 are combined, the first sun gear 4 and the fourth planet carrier 9 are braked, and the input shaft 1 drives the first planet through the first ring gear case 2 and the first ring gear 13 The frame 3 rotates in the same direction, and the third sun gear shaft 5 connected to the first planet carrier 3 also rotates at the same speed, and the third sun gear shaft 5 drives the third planet carrier 8 and the fourth sun gear 10 to Rotating in the same direction, the output shaft 11 connected to the third planet carrier 8 and the fourth sun gear 10 also rotates at the same rotational speed. At this time, the speed ratio of the planetary gear transmission mechanism is i1=(1+α1) / α1*(1+α3+α3 / α4), and the second planetary row P2 is in an idling state and does not participate in power transmission. Wherein α1 is the structural parameter of the first planetary row P1, α3 is the structural parameter of the third planetary row...

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Abstract

The invention discloses a drive mechanism of a hydrodynamic transmission. The drive mechanism mainly comprises an input shaft (1), a first planet row (P1), a second planet row (P2), a third planet row (P3), a fourth planet row (P4), a first clutch (L1), a second clutch (L2), a first brake (Z1), a second brake (Z2), a third brake (Z3), a fourth brake (Z4) and an output shaft (11). The drive mechanism of the hydrodynamic transmission has the advantages that the maximum drive ratio of the drive mechanism is 7.62, gear speed ratios are even in distribution from low-speed gears to high-speed gears, and the drive mechanism is extremely suitable for working machines with large working speed variation.

Description

[0001] Technical field: [0002] The invention relates to a transmission mechanism of a hydraulic transmission, which belongs to the field of mechanical transmission. [0003] Background technique: [0004] The maximum speed ratio of the planetary gear transmission mechanism of the common hydraulic transmission on the market is generally all less than 4-5 at present. Although individual wide speed ratio transmissions have a gear with a maximum gear ratio greater than 7, the speed ratio difference between it and its adjacent gears is relatively large, which is reflected in the output speed, which means that the output speed fluctuates greatly, and it cannot be adjusted for low speed conditions. With fine adjustment, the working machine is prone to shifting shocks and unstable work during operation. For example, the speed ratios of the five gears of the planetary gear transmission mechanism of the HT750DRD hydraulic transmission produced by the American ALLISON company are: i1=7...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F16H3/62F16H57/08
CPCF16H3/66F16H57/10F16H2200/0056F16H2200/2012F16H2200/2046
Inventor舒瑞龙
Owner贵州凯星液力传动机械有限公司