Planetary transmission overload protection structure

Abstract

The invention provides a planetary transmission overload protection structure which comprises a base body and a gear ring rotatably arranged on the base body, one end of the gear ring is provided with a wave-shaped meson or a first boss, the base body is correspondingly provided with the first boss or the wave-shaped meson, the wave-shaped meson is in a circular ring shape and has elasticity, and the center axis of the wave-shaped meson coincides with the center axis of the gear ring. The first boss is inserted into a front wave trough of the wave-shaped meson and can abut against a front wave crest adjacent to the front wave trough so as to limit rotation of the gear ring relative to the base body, and the front wave crest abutting against the first boss can be pushed by the first boss under the action of external force to be elastically deformed to be staggered from the first boss. The planetary transmission overload protection structure is simple and reliable in structure, convenient to use, capable of responding to overload impact in time and conducting buffering and load unloading, capable of automatically returning to the normal working state without human intervention, capable of effectively protecting a motor and preventing the motor from being damaged due to overload and convenient to use.

Description

technical field [0001] The invention relates to the field of planetary transmission mechanisms, in particular to an overload protection structure for planetary transmissions. Background technique [0002] The planetary transmission mechanism is mainly used in gearboxes, and usually includes a ring gear fixed in the case of the gearbox and a gear meshed in the ring gear. During operation, the ring gear remains stationary, while the gears can rotate and move. When the gearbox is used, it needs to bear external force loads. It may be subjected to excessive load during operation, which may cause the motor to stall. In addition, it may encounter reverse drive impact. For example, when the gearbox is applied to the joints of the robot, the joints of the robot It may encounter situations such as artificial torsion, external force impact, robot falling and impact on the joints, etc. When the gearbox is subjected to stalling impact and reverse drive impact, it is easy to cause overl...

AI Technical Summary

Problems solved by technology

When the gearbox is used, it needs to bear external force loads. It may be subjected to excessive load during operation, which may cause the motor to stall. In addition, it may encounter reverse drive impact. For example, when the gearbox is applied to the joints of the robot, the joints of the robot It may encounter situations such as artificial torsion, external force impact, robot falling and impact on the joints, etc.

When the gearbox is subjected to stalling impact and reverse drive impact, it is easy to cause overload damage to the motor connected to it. The current prevention method is usually to limit the motor current by means of electronic control detection, but this method is harmful to the gearbox. The passive protection when the output shaft encounters obstacles cannot provide protection against external impacts in the working state, and it is still easy to cause overload damage to the motor

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