Structural form, installation, disassembly, and precautions for wheel reducers


Date:

2023-06-21

The entire transmission device of the planetary cycloid reducer can be divided into three parts: input part, deceleration part, and output part.

The structural form of the cycloidal pinwheel reducer:
The entire transmission device of the planetary cycloid reducer can be divided into three parts: input part, deceleration part, and output part.
A double eccentric sleeve with a misalignment of 180 ° is installed on the input shaft, and two roller bearings are installed on the eccentric sleeve to form the H mechanism. The center holes of the two cycloidal gears are the raceways of the arm bearings on the eccentric sleeve, and the cycloidal gear meshes with a set of ring arranged needle gears on the needle gear to form a small tooth difference internal meshing reduction mechanism (in order to reduce friction in the reducer with a small speed ratio, the needle teeth are equipped with needle teeth sleeves).
When the input shaft rotates with an eccentric sleeve for one revolution, due to the characteristics of the gear curve on the cycloid wheel and its limitation by the needle teeth on the needle gear, the motion of the cycloid wheel becomes a plane motion with both revolution and rotation. When the input shaft rotates forward for one revolution, the eccentric sleeve also rotates for one revolution. The cycloid wheel rotates in the opposite direction by one tooth difference to achieve deceleration. Then, with the help of the W output mechanism, the low-speed rotation motion of the cycloid wheel is passed through the pin shaft, Transmitted to the output shaft to obtain a lower output speed.
Disassembly and assembly of cycloidal gear reducer:
When disassembling an oil lubricated model, it is necessary to drain the oil thoroughly and prepare for disassembly.
Disassembly sequence of main parts
1. With the output shaft facing upwards, remove the long bolt used to fasten the casing and separate the output end from the needle housing upwards.
2. The deceleration part is disassembled in the following order: output shaft pin sleeve → shaft retaining ring → high-speed bearing A → gasket or retaining ring → cycloidal gear A → spacer ring → eccentric sleeve (including bearings for eccentric sleeve) → cycloidal gear B → flat key → retaining ring → needle gear housing → needle gear sleeve → input shaft (including output shaft bearings A, B)
The installation sequence is opposite to disassembly, with the following key points in the installation process:
A: When installing the cycloidal gear into the bearing, it is necessary to align it. When installing it towards the shaft, it is important to ensure that the imprint between the cycloidal gear and the eccentric sleeve is facing upwards
B: Facing two cycloidal wheels for engraving, stagger the engraving 180 ° from each other for installation
C: A sealing paper pad or sealant must be used between the input end cover and the needle housing, as well as between the input end and the needle housing.
D: After installation, rotate from the high-speed shaft side (motor side) and confirm that there are no abnormalities before conducting a trial run.

Keywords:

moderate,Output terminal

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