Method for inhibiting rotational speed and torque fluctuation of movable tooth stepless speed changer

Abstract

The invention provides a method for inhibiting rotational speed and torque fluctuation of a movable tooth stepless speed changer and belongs to the technical field of mechanism transmission design and manufacturing. The technology is an improved technology established on the basis of the patent 200580039668.6, the function for achieving movable tooth stepless engagement through sliding piece combination sliding deformation is recorded in the patent 200580039668.6, and a non-friction engagement stepless speed changer can be achieved; but engagement tooth gaps are produced due to the thickness of movable tooth sliding pieces, and thus transmission fluctuation of the rotational speed and the torque is caused. The invention provides a calculation method aiming at the engagement tooth gaps, a relationship between the engagement tooth gaps and the thickness and the number of the movable tooth sliding pieces, the speed ratios, the sprocket pitch, the tooth thickness and the like is obtained; and the number of no-gap speed ratios is increased by reasonably designing the movable tooth stepless speed changer, so that the speed ratios of the movable tooth stepless speed changer under all working conditions are close to the no-gap speed ratios as far as possible, and thus rotational speed and torque fluctuation can be inhibited.

Description

Technical field: [0001] The invention belongs to the technical field of mechanical transmission design and manufacture, and in particular relates to a method for suppressing fluctuations in rotational speed and torque of a movable-tooth continuously variable transmission. Background technique: [0002] Patent 200580039668.6 (slide deformed tooth stepless meshing movable gear, authorized announcement date: June 10, 2009, authorized announcement number: CN 100498006C) introduces a sliding plate deformed movable tooth stepless meshed movable gear device, the movable tooth has no The variable speed device is a new type of continuously variable transmission based on the theory of movable tooth meshing. This kind of movable tooth continuously variable transmission relies on the combined sliding deformation of the sliding plates to realize the movable tooth stepless meshing transmission, so that it can realize non-friction Engage the CVT. But because the movable-tooth slide has a ...

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Problems solved by technology

[0003] Aiming at the problem of meshing backlash in the movable tooth CVT, the present invention proposes a formula for calculating "meshing backlash", which can be used to calculate the thickness and number of movable tooth slides and the metal tooth shape chain according to the formula of "meshing backlash". Rational design of tooth pitch and tooth width increases the number of "gapless speed ratios", thereby suppressing fluctuations in rotational speed and torque of the movable tooth CVT during the transmission process

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