Dual-shaft synchronous counter-rotating structure

Abstract

The invention provides a dual-shaft synchronous counter-rotating structure. The dual-shaft synchronous counter-rotating structure comprises a motor. An outer shell is provided under the motor. The outer shell includes a side cover, an upper cover and a lower cover. The side cover is internally provided with a synchronous belt, two synchronous wheels and two middle motor bases, the synchronous wheels are located inside the middle motor bases, the synchronous wheels are driven by the synchronous belt, the center of each synchronous wheel is provided with a shaft hole up and down in a penetratingmode, the lower part of each shaft hole is provided with a middle transmission shaft, a speed reducer is arranged under the side cover, the upper and lower ends of the middle transmission shafts areconnected with the synchronous wheels and the input end of the speed reducer, and the speed reducer drives a rotating shaft of a mixer to rotate in opposite directions. The dual-shaft synchronous counter-rotating structure has the advantages that the transmission is covered in an outer cover to prevent hair, streamers, etc. from being rolled in possibly, and is safer than chain-driven mixers; noise generated by the use of the synchronous belt to synchronize the motor is significantly lower than that of other transmission methods such as chains or gears, the output shock is transferred from thespeed reducer to the synchronous belt, and the speed reducer is protected.

Description

technical field [0001] The invention relates to the field of dual-axis synchronization, in particular to a structure for dual-axis synchronous counter-rotation. Background technique [0002] Two-shaft synchronous counter-rotation, mostly used on equipment like "twin-shaft paddle mixer", its operation effect is: when one output shaft is rotating, the other output shaft will synchronously rotate in reverse, that is Say, the two output shafts rotate at the same angular velocity and in opposite directions. [0003] At present, the "twin-shaft paddle mixer" on the market has two-shaft synchronous counter-rotation technology mainly has the following three structures: [0004] 1) Sprocket chain transmission: Install two main sprockets with the same specifications on the two output shafts of the mixer respectively, and drive the main sprockets to rotate synchronously in opposite directions by reversing the tensioning sprocket and driving sprocket ; [0005] This structure has the...

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Problems solved by technology

[0005] This structure has the following defects: Although there is a protective cover, the sprocket still has hidden dangers. Due to the existence of the driving motor, the cover will have a large gap near the sprocket directly connected to the motor, and the user's hair and ribbons will be caught. the possibility of entering the sprocket there;

[0007] This structure has the following defects: due to the characteristics of the worm gear reducer itself, the safety factor cannot be satisfied for larger mixers (more than ten kilowatts of power), and can only be installed on small mixers; due to the synchronization of the two reducers The shaft cannot be absolutely concentric during installation and docking, and the rigid coupling will generate relatively large friction noise during actual operation, and low-frequency buzzing sound will be generated during high-speed rotation (coupling speed = motor input speed)

[0009] This structure has the following defects: due to the structure of the helical gear / bevel gear set inside, the internal transmission is complicated (close to the car gearbox), so the manufacturing / purchasing cost is much higher than the former two; and due to the high degree of integration, the The reducer is bulky and difficult to maintain

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