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Motor-driven planetary gear train gear shifting mechanism

A technology for planetary gear trains and shifting mechanisms, applied to mechanical equipment, transmission parts, components with teeth, etc., to achieve the effects of simple installation structure, compact structure, simplified internal structure and external installation structure

Active Publication Date: 2015-02-04
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of stability and shift smoothness of the existing heavy-duty vehicle gearbox sub-box, the present invention provides a motor-driven planetary gear shift mechanism

Method used

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  • Motor-driven planetary gear train gear shifting mechanism
  • Motor-driven planetary gear train gear shifting mechanism
  • Motor-driven planetary gear train gear shifting mechanism

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Embodiment Construction

[0020] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0021] see figure 1 and figure 2 , A motor-driven planetary gear shift mechanism is composed of a planetary gear mechanism, a synchronizer 15 and a shift fork mechanism.

[0022] see figure 1 and image 3 , the planetary gear train mechanism includes a center wheel 2, an inner ring gear 7, a planet carrier 9 and three planetary wheels 3, the center wheel 2 is fixedly installed on one end of the input shaft 1, and the center wheel 2 and the input shaft 1 are connected through a spline fit, The shaft end of the input shaft 1 is fixed by a lock nut, and the other end of the input shaft 1 is the input end. The planet carrier 9 is formed by a disk coaxially connected with a rotating shaft, see image 3 , three planetary gears 3 are evenly distributed on the disk through the planetary gear shaft 5, and needle bearings 4 are installed between e...

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Abstract

The invention relates to a motor-driven planetary gear train gear shifting mechanism, which consists of a planetary gear train mechanism, a synchronizer and a gear shifting transmission fork mechanism, wherein the planetary gear train mechanism comprises a center wheel, an inner gear ring, a planetary carrier and three planetary gears; the planetary carrier is formed by the fact that a disk is coaxially connected with one spindle; the three planetary gears are evenly distributed on the disk and are respectively meshed with the center wheel and the inner gear ring; one side of the inner gear ring is connected with a tubular shaft sleeve; the shaft sleeve sheathes the spindle of the planetary carrier; one side of the synchronizer sheathes the shaft sleeve of the inner gear ring, and the other side of the synchronizer sheathes the spindle of the planetary carrier; the gear shifting transmission fork mechanism comprises a transmission fork, a ball screw and a servo motor. According to the motor-driven planetary gear train gear shifting mechanism, the ball screw driven by the servo motor is used for driving a gear shifting transmission fork to realize gear shifting, so that gear shifting impact is small, and gear shifting smoothness and service life are improved and prolonged. Since the servo motor is supplied with power by an automobile battery instead of directly consuming the kinetic energy of an engine, the efficiency of the engine is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of transmissions, and in particular relates to a motor-driven planetary gear shifting mechanism suitable for an auxiliary case of a gearbox of a heavy-duty vehicle. Background technique [0002] At present, most heavy-duty vehicles use double countershaft transmissions, which are divided into two parts, the main gearbox and the auxiliary gearbox. Most of them use the same double countershaft method as the main gearbox. The gear transmission system corresponding to this method adopts ordinary external meshing gear transmission, which makes the gear transmission system of the auxiliary gearbox very complicated. The volume of the gearbox is relatively large, the structure is not compact enough, the stability is poor, and the transmission efficiency is relatively low. From the point of view of the executive driving mechanism for gear shifting, at present, the gear shifting mode of the main gearbox mostly adopts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/02F16H61/32
CPCF16H59/02F16H61/32F16H63/32F16H2057/02043F16H2061/323Y02T10/60
Inventor 黄康夏公川董宇段松林朱晓慧张祖芳
Owner HEFEI UNIV OF TECH
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