Shaft gap eccentric braking device of photoelectric rotary table

Abstract

The invention relates to a shaft gap eccentric braking device for a photoelectric rotary table. The device comprises a motor driving assembly, a worm driving assembly and an output shaft and worm gear eccentric braking assembly. The output shaft and worm gear eccentric braking assembly comprises a fixed mounting plate, a worm gear, an eccentric friction disc and an output shaft; the output shaft is rotationally mounted on the fixed mounting plate, the eccentric friction disc is coaxially and fixedly connected to the worm gear, and the worm gear sleeves the output shaft and is rotationally mounted on the fixed mounting plate; a motor of the motor driving assembly drives a worm of the worm driving assembly to rotate, the worm drives the worm gear to drive the eccentric friction disc to rotate, and the inner side of the eccentric friction disc is made to be close to or away from the output shaft. According to the braking device, the brake friction disc of the output shaft and worm gear eccentric brake assembly adopts an eccentric structure, the problem that the structure is stuck can be effectively solved in the rotating locking and unlocking process, and the braking device is compact in structure and high in reliability.

Description

technical field [0001] The invention relates to the technical field of mechanical brakes, in particular to an eccentric braking device for the shaft clearance of a photoelectric turntable. Background technique [0002] The photoelectric turntable in the prior art is equipped with a manual latch locking device, an electromagnetic power-off brake or an electromagnet latch. These three braking methods play a role in protecting the photoelectric turntable during transportation, but there are the following defects. [0003] Manual latch locking device: When working, the staff needs to manually open the latch to ensure the normal operation of the photoelectric turntable; when not working, the staff needs to manually lock the latch and implement braking measures. Its operation is very inconvenient, especially in the case of high towers, shipboards, and no one sticking to it. [0004] Electromagnetic de-energized brake: It uses the principle of electromagnet. When it is not working...

AI Technical Summary

Problems solved by technology

In the long-term vibration and impact environment, the bolt will have elastic and plastic deformation, which will lead to an increase in the friction resistance on the contact surface between the bolt and the pin hole. direction, so that sometimes the unlocking force is less than the combined force of the above two forces, and the lock cannot be unlocked.

In addition, the latch-type detent mechanism can only lock the shafting at a limited number of angles

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