High-bearing-capacity cycloidal pin wheel speed reducer

Abstract

The invention relates to a high-bearing-capacity cycloidal pin wheel speed reducer. The high-bearing-capacity cycloidal pin wheel speed reducer comprises an input portion, a speed reduction portion and an output portion, wherein the input portion comprises a flange plate and an input shaft; the output portion comprises an engine seat and an output shaft; and the speed reduction portion comprises a 180-degree-staggered double-eccentric support member, two cycloidal wheels and a plurality of pin shafts, a pin sleeve and a pin gear assembly, wherein the pin shafts and the pin sleeve are connected with the cycloidal wheels and the output shaft. The high-bearing-capacity cycloidal pin wheel speed reducer is characterized in that the pin gear assembly consists of a pin gear housing and a plurality of gear pins; two end surfaces of the pin gear housing are respectively compressed with the inner end surfaces of the flange plate and the engine seat, and the pin gear housing, the flange plate and the engine seat are fixedly connected by bolts; and arc-shaped grooves are uniformly formed in the inner circle of the pin gear housing, and the gear pins are mounted in the arc-shaped grooves one by one. By utilizing the technical scheme, the contact areas between the gear pins and the pin gear housing are increased; and compared with the conventional structure, for the high-bearing-capacity cycloidal pin wheel speed reducer, the gear pins are uniformly extruded on the whole axial length, so that the rigidity of the gear pins is substantially increased, the deformation of the gear pins is avoided when an input torque is properly increased, the noise and the temperature rise caused by the deformation are reduced, and finally the bearing capacity of the whole speed reducer is improved.

Description

Technical field [0001] The invention relates to a cycloid reducer, in particular to a cycloid pin wheel reducer with high bearing capacity. Background technique [0002] Cycloidal pin gear reducer is a new type of transmission mechanism designed according to JB / T2982-94 using the principle of cycloidal pin tooth meshing and planetary transmission with few tooth difference. It is composed of input part, deceleration part and output part. Among them, the needle tooth assembly is an important structure of the deceleration part composed of the needle tooth shell, the needle tooth pin and the needle tooth sleeve. The connection relationship is: the needle tooth pin is uniformly distributed and inserted on the needle tooth shell along the circumference, and the needle tooth sleeve is sleeved on the needle Tooth pin on. The needle gear sleeve is in contact with the outer tooth surface of the cycloid. The above-mentioned cycloid pin gear reducer has a small bearing capacity when in use...

AI Technical Summary

Problems solved by technology

The above-mentioned cycloidal pin gear reducer has a small load-bearing capacity when in use. The main reason is that there is a certain gap between the outer circular surface of the pin gear sleeve and the pin gear housing, that is, the corresponding gap between the pin gear sleeve and the pin gear pin. Partially suspended in the air, under the action of the cycloidal wheel, a shear force is formed at the local position where the pin tooth pin contacts the pin tooth housing, resulting in poor stiffness of the pin tooth pin, while the outer tooth surface of the cycloid wheel and the pin tooth housing The contact position is one of the three force concentration parts of the deceleration part. When the input torque increases appropriately, that is, when the bearing capacity reaches a certain value, the pin tooth pin is deformed under the excessive extrusion of the cycloid wheel, and at the same time Problems with noise and temperature rise

Images