Ring surface enveloped non-clearance worm and gear speed-reduction apparatus

Abstract

The invention relates to a torus enveloping gapless worm wheel and worm decelerating device which is widely applied to various transmission mechanisms, in particular to the transmission mechanisms in the fields of vehicle lifter, overhead working truck, solar tracker, etc. The torus enveloping gapless worm wheel and worm decelerating device comprises a pedestal (1), a worm (2) and a pivoting support (3). The worm (2) comprises a mandrel (2.1), a left half worm (2.2), a right half worm (2.3), a spring (2.4) and a poke pin (2.5). The mandrel (2.1) is arranged in a shaft casing (1.1). The left half worm (2.2) and the right half worm (2.3) are sheathed at the mandrel (2.1) in zygomorphy. The spring (2.4) is embedded in a hole with large diameter of the left half worm (2.2) and the right half worm (2.3). The left end face of the left half worm (2.2) is pined with a left shaft shoulder (2.1.1) of the mandrel by the poke pin (2.5). The right end face of the right half worm (2.3) is pinned with a right shaft shoulder (2.1.2) of the core shaft by the poke pin (2.5). A clearance is left between the right end face of the left half worm (2.2) and the left end face of the right half worm (2.3). The torus enveloping gapless worm wheel and worm decelerating device can adjust the meshing state automatically and eliminates the clearance at the side of meshing gears of the worm wheel and the worm.

Description

technical field [0001] The invention relates to a toroidal enveloping worm gear reducer. It is widely used in various transmission mechanisms, especially transmission mechanisms in the fields of truck-mounted cranes, aerial work vehicles, and solar trackers. Background technique [0002] At present, the toroidal worm gear transmission is widely used in various reduction transmission devices because of its characteristics of large load capacity, large transmission ratio, stable transmission, and self-locking. In these transmission mechanisms, the worm gears and worms are vertically staggered, and the center distance is determined by the base and is fixed. It mainly has the following problems: [0003] 1. There is a backlash problem in the design. In the design, in order to overcome the manufacturing error and thermal deformation of the meshing teeth of the worm gear and the worm and make the transmission flexible, it is necessary to design a meshing backlash, which reduces...

AI Technical Summary

Problems solved by technology

In the design, in order to overcome the manufacturing error and thermal deformation of the meshing teeth of the worm gear and the worm and make the transmission flexible, it is necessary to design a meshing backlash, which reduces the transmission accuracy and cannot meet the requirements of high-precision transmission, especially on-board Backlash-free transmission requirements in cranes, aerial work vehicles, solar trackers, etc.

[0004] 2. After wear and tear, the transmission gap becomes larger, and it cannot meet the above transmission requirements.

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