Forward and reverse continuously variable transmission and continuously variable transmission and reversing device thereof

Abstract

The invention provides a forward and reverse continuously variable transmission which consists of a continuously variable transmission and a reversing device. A sun gear (2) of a planetary mechanism is connected to a first shaft (1) and a planet carrier (6) is connected to a second shaft (7). An internal gear ring (5) is connected with a hydraulic motor (15) through an external gear ring (4) and a transmission gear (18). A hydraulic pipe (16) connected with the hydraulic motor (15) is provided with a hydraulic operating valve (17). The sun gear (13) of a planetary mechanism and the driving part of a clutch (8) are connected to the second shaft (7). The driven part of the clutch (8) and a drum brake of a reverse brake (9) are connected integrally with the planet carrier (10). An internal gear ring (11) is connected to a third shaft (14). The forward and reverse continuously variable transmission has the advantages of simple and compact structure, high transmission power, high effect, stable and reliable work, convenient control, mature technology, lower cost and wide range of application and is in particular suitable for mechanical transmission in complicated environments such as automobiles and the like.

Description

technical field [0001] The invention relates to a mechanically driven continuously variable transmission and a reverse device, in particular to a forward and reverse continuously variable transmission composed of the two. Background technique [0002] Although there are many types of continuously variable transmissions currently used in mechanical transmission, their application range is greatly limited due to their inherent structural defects, low transmission power, low efficiency, and short service life. Especially in the mechanical transmission of high power and various complex environments, such as transportation, especially in the mechanical transmission of automobiles, there is no satisfactory continuously variable transmission so far. Although many inventors have proposed multiple schemes, their structures are too complex or practically insufficient, so they are difficult to implement and have not been widely used. [0003] The reverse mechanism (i.e. the reversing ...

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Problems solved by technology

[0005] In order to solve the shortcomings of the existing mechanical transmission continuously variable speed change device and reverse mechanism, the present invention provides a simple and compact structure, large transmission power, high efficiency, stable and reliable operation, long life and wide application range, especially suitable for automobiles. Forward and reverse continuously variable transmissions and their continuously variable transmissions and reverse devices in complex environments such as

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