A kind of anti-backlash planetary reducer
A planetary reducer, anti-backlash technology, used in mechanical equipment, transmission parts, gear transmission and other directions, can solve the problems of precision decline, parts wear, no elimination of backlash, etc., to improve accuracy and stability, eliminate gears Backlash, the effect of prolonging the service life
Active Publication Date: 2018-01-19
HUBEI KEFENG TRANSMISSION EQUIP CO LTD
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Problems solved by technology
For a long time, the side clearance of the planetary reducer has been kept low, but the side clearance has not been eliminated, and the parts will wear out after a period of use, and the accuracy will also decrease
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[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, and the content of the present invention is not limited to the following embodiments.
[0017] The anti-backlash planetary reducer provided by the present invention has a structure such as figure 1 with figure 2 As shown, it at least includes a planetary gear system reduction mechanism composed of a ring gear, a sun gear 10, a planet carrier 3, a planetary shaft 4 and a planetary gear. The ring gear includes a main ring gear 1 and a secondary ring gear 8, and the main ring gear 1 One end of the planetary carrier 3 is installed on the rotating shaft of the planet carrier 3 through two bearings A2, and the other end is a stepped structure. The auxiliary ring gear 8 is installed on the stepped surface of the main ring gear and can rotate on the stepped surface. In order to ensure the gap between the teeth Appropriate, H7 tolerance is used for the main ri...
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The invention provides a gap-eliminating planetary speed reducer. A gear ring of a planetary gear train comprises a main gear ring and auxiliary gear rings. One end of the main gear ring is installed on a rotary shaft of a planet carrier, and the other end of the main gear ring is of a stepped structure. The auxiliary gear rings are installed on the step faces of the stepped structure of the main gear ring and can rotate on the step faces. 3-4 planetary axles are evenly distributed on the planetary carrier. Each planetary axle is provided with a main planetary wheel and an auxiliary planetary wheel, wherein the main planetary wheel is meshed with a sun wheel and the main gear ring, and the auxiliary planetary wheel is meshed with the sun wheel and the auxiliary gear rings. An input shaft of the speed reducer is provided with an input gland. The contact faces of the input gland and the auxiliary gear rings are each provided with a protrusion A and a protrusion B which are oppositely protruded outwards, wherein the protrusion A and the protrusion B are in a circular arc shape and are located on the same circumference, and a compressed spring is arranged in the circumferential gap between the protrusion A and the protrusion B. The gap-eliminating planetary speed reducer can bear larger torque through power dividing of 3-4 planetary wheels, the gear side gap is completely eliminated, the abrasion compensating effect is achieved, and the precision and stability of main machine equipment are improved.
Description
technical field [0001] The invention provides a planetary reducer, in particular to an anti-backlash planetary reducer. Background technique [0002] Since the planetary gear transmission is a coaxial transmission device, several identical planetary gears are evenly distributed around the center wheel in structure to share the load together, and the internal meshing carrying capacity is reasonably applied. High and internal gear space volume, thereby reducing the size, making the structure compact and achieving high load capacity. Widely used in CNC machine tools, automation machinery, mechanical arms, printing, textile and other mechanical equipment. [0003] In the precision transmission industry, the positioning of the planetary reducer is required to be precise, and the precision can be maintained for a long time. For a long time, the side clearance of the planetary reducer has been kept low, but the side clearance has not been eliminated, and the parts will wear out a...
Claims
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IPC IPC(8): F16H57/12F16H1/32
CPCF16H1/32F16H57/12F16H2057/127
Inventor 吴俊峰吕小波吴又安
Owner HUBEI KEFENG TRANSMISSION EQUIP CO LTD