Stacked gear structure with side clearance removal through elasticity

Abstract

The invention discloses a stacked gear structure with side clearance removal through elasticity, which aims to provide a gear structure, which has the advantages that: side clearance in gear transmission can be removed, cold / heat stress generated internally can be removed, the service life of gears is improved, and the noise generated when gears are meshed is reduced. A conical surface is arranged on a main gear; a gear with side clearance removal is connected with the main gear in a self-locking way through a taper hole matched with the conical surface; the outer side of the conical surface on the main gear is in thread connection with a compression nut of the gear with side clearance removal; positioning pin holes forming positioning zero points in peripheral directions of the main gear and the gear with side clearance removal are arranged on the main gear and the gear with side clearance removal; an adjusting pin is arranged on the main gear; an arc-shaped adjusting slot hole is arranged at a position on the gear with side clearance removal, corresponding to the adjusting pin; adjusting brackets are respectively arranged on two sides of the arc-shaped adjusting slot hole; each adjusting bracket is provided with an adjusting screw vertical to an axial line of the adjusting pin; and weight balancing blocks are respectively arranged on positions on the gear with side clearance removal, which respectively have intervals of 180 degrees with each adjusting bracket.

Description

technical field [0001] The invention relates to a stacked gear structure with elastic backlash removal. Background technique [0002] From the point of view of the principle of involute gear meshing, the general gear meshing transmission analysis is carried out according to the transmission theory research of gearless meshing; Due to the small space for lubricating oil, the anti-interference space required for tooth shape manufacturing errors, etc., the actual gear transmission system needs to leave an appropriate amount of backlash to work normally. The gear designed purely according to the theory of backlash-free meshing It is also difficult to work properly if it cannot be processed. Therefore, in the design of involute gears, the gear usually defines the negative tolerance zone of the tooth thickness (making the profile of the tooth processed thinner than the physical profile) to ensure that there is a gap between the two non-working tooth surfaces when the tooth is wor...

AI Technical Summary

Problems solved by technology

[0004] Although the above structure can eliminate the tooth backlash to a certain extent, since the combined gear is under static conditions and uses a rigid structure to adjust its relative rotation, the inside of the meshing tooth profile must exist during work: thermal expansion due to temperature rise during work The thermal stress caused by increasing the tooth thickness; the cold stress caused by the interference point between the tooth profiles during the meshing dynamic process due to manufacturing errors that the tooth profile does not completely conform to the theoretical profile; the lack of oil due to the lack of space for lubricating oil There are many problems such as strong friction and wear

In practice, this kind of gear transmission will show problems such as a large increase in noise and a rapid decline in service life. There are also many difficulties in adjusting the combined gear: if the adjustment is loose, the machine cannot work normally due to the inaccurate working position; if the adjustment is tight, the above problems are more prominent. Seriously affect the working quality and life of the machine

Moreover, except for the backlash gear and the main gear, generally only one tooth surface participates in the work. If the tooth surface is worn or pitted and fails, the tooth surface on the other side that has not participated in the work at all has to be replaced in advance. scrap

In conclusion, the theoretical analysis shows that the traditional static and rigid manual adjustment is almost impossible to adjust the combined gear to the best state

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