Mechanical friction type stepless speed change device

A continuously variable transmission device and mechanical friction technology, which is applied in the direction of friction transmission devices, mechanical equipment, transmission devices, etc., can solve the problems of high surface life of friction pairs, inevitable power loss, and high cleanliness requirements, so as to improve life, The effect of convenient electronic control and wide application range

Inactive Publication Date: 2003-09-17
北京中资燕京汽车有限公司
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the cone-disk busbars is a straight busbar, which has the advantages of large contact area, low contact stress, and high service life of the friction pair surface. The disadvantage is that the deflection between the belt (chain) symmetry axis and the cone-disk rotation axis will inevitably occur during the speed change process, which will affect the transmission. In order to reduce the deviation, the gear ratio should not be large, and generally only achieve R=5~6; the other is a curved generatrix, and the side where the friction plate (or pin end) contacts the cone is the friction working surface, and the working surface The busbar is a curve (Chinese patent, patent No. 00212516.1), and its conical-disc-curved busbar and the side shape of the belt (chain) form a pair of conjugate curves. Vertical, stable transmission, the disadvantage is that the contact stress is slightly larger, thus affecting the life
In addition, in addition to belts and toothed chains in the pressurization and speed regulation system, metal belt and pendulum chain continuously variable transmissions mostly use hydraulic pressurized speed regulation systems. At present, almost all CVTs for automobi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mechanical friction type stepless speed change device
  • Mechanical friction type stepless speed change device
  • Mechanical friction type stepless speed change device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] The present invention will be described in further detail below through examples and drawings.

[0016] Such as Figure 3~4 As shown, the present invention is a continuously variable transmission structure composed of a mechanical pressurizing and speed regulating mechanism 2 through a pressure plate 15, a pressurized disc spring 14 and a composite busbar friction pair 1. The composite curve friction pair 1 is a fixed cone The disc 12 and the movable cone disc 13 are coaxial, and the conical surfaces are opposite, and the two are connected in frictional contact by a flexible closed loop composed of a friction plate 16. The fixed cone disc 12 is fixed on the input shaft 11 and rotates with the input shaft 11 The other side of the movable cone plate 13 sliding along the axis of the input shaft is successively fixedly installed with a pressurized disc spring 14 and a pressure plate 15, in which the cone surface curves of the fixed cone disc 12 and the movable cone disc 13 are t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A mechanical friction type stepless speed variator is composed of mechanical pressing and speed-regulating mechanism, pressing disk, pressing spring and the friction set with complex generating line.Said friction set consists of static conic disk and moving conic disk, which are coaxial and have opposite conic surfaces, which are in contact by flexible closed-loop friction formed by frictino disks or pins. Said conic surface comprises a straight-line segment and a curve segment. Said mechanical pressing and speed-regulating mechanism is composed of bidirectional three-position clutch, symmetric planetary gear train, gear nut and external gear.

Description

technical field [0001] The invention relates to continuously variable transmission technology, in particular to a mechanical friction continuously variable transmission device with intermediate flexible elements such as belts and chains. Background technique [0002] Continuously variable transmission is a mechanical transmission device with continuously adjustable transmission ratio. Because it can adapt to the requirements of changing working conditions or continuously changing speed during machine operation, it is not only widely used in light industrial sectors such as textiles, food, paper, rubber, etc., but also It is also used in various mechanical equipment such as working machine (machine tool), overweight transportation, petrochemical industry, etc., especially its successful application in automobile transmission in recent years. [0003] The basic composition of mechanical friction continuously variable transmission for automobiles includes oil pump, forward and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F16H15/54
Inventor 程乃士程越
Owner 北京中资燕京汽车有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products