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Step transition type stepless speed change auxiliary transmission

A kind of auxiliary transmission and continuously variable transmission technology, applied in the field of planetary gear auxiliary transmission, which can solve the problems of increasing structural complexity and the like

Inactive Publication Date: 2015-09-30
王亚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there must be three sets of friction plate clutches or brakes, which will inevitably increase the complexity of the structure, so in actual engineering, 3 gears are rarely realized through 1 ordinary planetary row

Method used

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  • Step transition type stepless speed change auxiliary transmission
  • Step transition type stepless speed change auxiliary transmission
  • Step transition type stepless speed change auxiliary transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The basis for gear shifting is the presence of the gear shift control spline shaft kit, as attached figure 1 shown. The kit consists of reverse gear axial movement hydraulic cylinder 3, shift control spline shaft 4, 2nd gear axial movement hydraulic cylinder 24 and two-way hydraulic oil restriction cross rubber plate valve 35, the first three are through interference fit or Welded solid one. There are three sections of involute external splines 4a, 4b and 4c on the shift control spline shaft 4, an oil hole 4d for controlling the oil circuit of the reverse gear clutch, and a friction gear matched with the reverse gear synchronous ring 28 Cone 4e. The outer spline 4a is always connected with the inner spline of the planetary carrier 13; and when the forward gear is in the second gear, the outer spline 4a is connected with the second gear inner spline sleeve which is solidly integrated with the fixed cone 2 of the driven shaft of the continuously variable transmission de...

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PUM

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Abstract

The invention discloses a transmission scheme of a planetary gear type auxiliary transmission connected to the rear of a stepless speed change device in series. The auxiliary transmission can achieve two forward gears and a reverse gear through an internal-external meshed single planetary gear row, a friction plate type brake, a friction plate type clutch and a gear-shifting control spline shaft capable of moving in the axial direction. The gear-shifting control spline shaft is provided with three external splines, and different transmission modes of the planetary gear set can be achieved through different axial positions. The gear-shifting control spline shaft can be connected with a planetary carrier and an output shaft when in the first gear, a gear ring is fixed to a shell through the friction plate type brake, and an input shaft is a sun gear (a stepless speed change device driven shaft); the gear-shifting control spline shaft can be directly connected with the driven shaft and the output shaft of the stepless speed change device when in the second gear, and the planetary gear set does not work; the gear-shifting control spline shaft can be connected with the planetary carrier and the shell (planetary carrier fixation) when in the reverse gear, the gear ring is connected with the output shaft through the friction plate type clutch, and the input shaft is the sun gear.

Description

technical field [0001] The invention relates to a planetary gear auxiliary transmission connected in series behind a mechanical continuously variable transmission. The auxiliary transmission can realize 2 forward gears and 1 reverse gear through a common planetary row (single planetary row with internal and external meshing). The sub-transmission is only suitable for a vehicle transmission system using a step-transition continuously variable transmission scheme, and can be applied to any mechanical vehicle continuously variable transmission device. Background technique [0002] In the past, the applicant of the present invention has applied for a "step transition type continuously variable transmission scheme". In the above-mentioned transmission scheme, the present inventor proposes for the first time a method for shifting gear ratios such as auxiliary transmissions through the transmission path of the transition gear. In more detail: in the low gear, the product of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44F16H63/30
CPCF16H3/44F16H63/3026F16H2200/0034F16H2200/2035
Inventor 王亚
Owner 王亚