Short-wheelbase large-speed-ratio tooth group structure

Abstract

The invention provides a short-wheelbase large-speed-ratio gear set structure which is characterized in that a transmission shaft is pivoted at the axis of a machine shell, a sun gear is arranged on the transmission shaft, an inner gear ring track is arranged on the inner edge of the machine shell in a locking mode, and a planetary gear set is arranged between the sun gear and the inner gear ring track. The planetary gear set is provided with a plurality of step planetary gears which can rotate and revolve in a surrounding mode on the periphery of the sun gear, each step planetary gear is provided with a first gear part which can be synchronously meshed with the sun gear and the inner gear ring track, and each step planetary gear is provided with a second gear part which rotates synchronously with the first gear part. The planetary gear set is sleeved with an output piece, the inner edge of the output piece is provided with an inner gear edge capable of being meshed with the second gear parts of the stepped planetary gears, and therefore a short-axle-distance structure can be formed, the volume can be effectively reduced, the planetary gear set can reversely rotate while driving the output piece, the large speed ratio is formed, the speed reduction effect of the planetary gear set can be further improved, and the service life of the planetary gear set is prolonged. And interference can be reduced, so that the whole operation is smoother, vibration and noise can be reduced, and the service life can be prolonged.

Description

technical field [0001] The invention relates to the technical field of a deceleration mechanism, in particular to a gear group structure with a short wheelbase and a large speed ratio, so as to reduce the material volume, increase the deceleration effect, reduce vibration and noise, and avoid operation interference , to prolong its service life. Background technique [0002] Due to the high speed of the motor, in some fields, when it is directly driven, it is prone to the phenomenon that the speed is too fast and cannot provide a large torque, which not only fails to achieve the predetermined work purpose, but also affects the convenience of operation. Therefore, in these fields, a reducer is generally installed on the motor output shaft to reduce the rotational speed and output a larger torque. There are many types of reducers, such as the former case of Taiwan's new patent application No. 097213180 "Reduction Gear", which is the most common reducer combined with planetary...

AI Technical Summary

Problems solved by technology

[0002] Due to the high speed of the motor, in some fields, when it is directly driven, the speed is too fast and the large torque cannot be provided, which not only fails to achieve the intended work purpose, but also affects the convenience of operation. Therefore, in these fields, a reducer is generally installed on the output shaft of the motor in order to reduce the speed and output a larger torque.

However, there are many types of reducers, such as the previous case of "reduction device" in Taiwan's new patent application No. 097213180, which is the most common reducer combined with planetary gears, which can overcome the reduction of traditional large and small gear sets. Problems such as complex structure, running noise and vibration derived from the machine

[0003] However, the existing reduction ratio is limited. If a larger reduction ratio is required, the gear ratio between the sun gear and the peripheral planetary gear must be increased. This will increase the outer diameter of the entire reduction device and also affect its output torque. For this reason, the industry has developed multi-stage planetary gears to overcome this problem. For example, in the previous case of Taiwan's new patent application No. 102200801 "planetary gear reducer", the gear frame is divided into a planetary first gear and a second gear. , wherein the first gear meshes with the sun gear and the fixed first ring gear, and the second gear meshes with the sun gear and the second ring gear connected to the transmission member. Since the first and second gears are respectively arranged on the gear frame, at the same time The two mesh with the sun gear synchronously. When the gear ratio of the first and second gears is incorrect, interference problems will occur, which will cause vibration and noise during operation, and also increase the overall wheelbase. 1. The second gear needs to mesh with the sun gear synchronously, which also limits the range of the gear ratio, and cannot effectively improve its deceleration effect

[0004] In other words, the existing reduction mechanism has the problem of being unable to achieve both a small size and a large reduction ratio. At the same time, due to the interference problem, it produces running noise and vibration, and even causes gear wear and shortens the service life. How to solve the aforementioned problems is a matter for the industry. And what the user expects is also what the present invention intends to explore

[0005] Therefore, aiming at the problems faced by the above-mentioned existing ones, the inventors devoted themselves to research and combined with the application of academic theories, adhered to many years of experience in design, development and implementation of this related industry, improved the lack of existing structures, and finally successfully developed A gear set structure with short wheelbase and high speed ratio, so as to overcome the troubles and inconveniences derived from the prior art

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