A ring-cloth double-cone friction type stepless automatic transmission device

Abstract

The invention discloses an annularly-arranged double-frustum friction type automatic stepless speed change device and belongs to the technical field of mechanical transmission. The annularly-arranged double-frustum friction type automatic stepless speed change device comprises a box, an input shaft and an output shaft. The axis of the input shaft is parallel to the axis of the output shaft. A friction disc of a frustum-shaped structure is arranged at one end of the input shaft, and the friction disc slides along the input shaft under the action of a hydraulic propeller. A big bevel gear is arranged at one end of the output shaft. The friction disc and the big bevel gear are located in the box. Driven shafts are further arranged on the side wall of the box. The axes of the driven shafts are perpendicular to the input shaft. Small bevel gears are fixed to the driven shafts. The driven shafts are sleeved with frustums. The frustums slide along the driven shafts under the action of springs. The friction disc is in sliding fit with the surfaces of the frustums. The big bevel gear is engaged with the small bevel gears. According to the annularly-arranged double-frustum friction type automatic stepless speed change device, by continuously changing the radius of the contacting section of the friction disc and the annularly-arranged friction frustums, stable stepless speed change within a wide speed change range is achieved, transmission is stable, large torque can be transmitted, and the annularly-arranged double-frustum friction type automatic stepless speed change device is suitable for high-power engines.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a ring-cloth double-cone friction type stepless automatic transmission device. Background technique [0002] The mechanical industry's requirements for power transmission gradually tend to be stable stepless transmission, and stepless transmission has become a hot spot. Transmission efficiency must be considered in the design of the transmission, and the number of transmission stages should be reduced as much as possible in the transmission structure, while the structure should be designed as simple as possible for easy maintenance. [0003] The traditional continuously variable transmission CVT has a simple and compact structure and high transmission efficiency. However, when transmitting large torque, the metal belt is easy to slip, so it can only be used on low-power engines. In addition, its components are required to be manufactured with high prec...

AI Technical Summary

Problems solved by technology

[0003] The traditional continuously variable transmission CVT has a simple and compact structure and high transmission efficiency. However, when transmitting large torque, the metal belt is easy to slip, so it can only be used on low-power engines. In addition, its components are required to be manufactured with high precision, which greatly increases the manufacturing cost. , CVT fault diagnosis is difficult, maintenance is difficult

A device that realizes continuously variable speed by hydraulic means (such as hydraulic torque converter, hydraulic coupling, etc.) has stable transmission, but its structure is complicated, maintenance is difficult, and transmission efficiency is low

Some new continuously variable transmission devices emerged at the historic moment, such as the design with the patent number CN101550995B, but the components of this design have extremely strict requirements on processing, manufacturing and installation arrangement, the maintenance is difficult, and the structure is relatively complicated; the patent CN102401100A and the patent In the design of CN103603934A, chain drive and belt drive are respectively utilized, and the structure is not compact; for the design of CN102401100A and CN103016650B, the structure of internal parts is more complicated

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