Electric automatic levelling brace

Abstract

The invention relates to an electric automatic levelling brace for realizing multipoint electric automatic levelling, and aims to provide an electric automatic levelling brace with large lifting weight, rapid and reliable touchdown, good repeatability of levelling precision, high precision, safety, convenience, convenient maintenance and simple electric connection. The electric automatic levellingbrace comprises a levelling bearing disc connected with a levelling brace cylinder body and a direct current servo motor with an electric control unit. The top of the levelling brace cylinder body isprovided with a transmission chain which is connected with an output shaft of a speed reducer and a leading screw pair for rotary motion; the leading screw pair drives a levelling telescopic cylinderbody manufactured with a screw and the levelling bearing disc fixedly connected with the leading screw pair together to do linear lifting motion; a microswitch for feeding back the lifting position to an external control system is arranged on the cylinder wall of the levelling brace cylinder body; a small displacement triggering shaft records the moving position, triggers the microswitch at a triggering point and transfers an electrical signal of the lifting position of the levelling brace to the outside; and the small displacement triggering shaft is connected external control equipment through the microswitch and forms a closed loop levelling system with the servo motor connected with the speed reducer .

Description

technical field [0001] The invention relates to an electric support for a multi-point automatic electric leveling system, in particular to a multi-point support with high precision, heavy load, complicated joints and narrow space at the joints, which are specially required by the platform leveling system. The platform leveling system involved in the description of the present invention is applicable not only to a leveling system with multiple multi-point supports mainly on-board equipment, but also to other various multi-support platforms with leveling requirements. Such as mining excavators, vehicle satellite TV receivers, bridge erection equipment, medical testing platforms, missile launch vehicles and other electric automatic leveling systems. Background technique [0002] In the prior art, many movable devices require a high-precision leveling work platform when the devices are in use. For the leveling support of the working platform, there are generally two types of hy...

AI Technical Summary

Problems solved by technology

Due to the complex space for installing the leveling support and the various requirements for installation and connection positions, the above-mentioned prior art often has the defect of taking care of one thing and sacrificing the other in dealing with the above-mentioned problems

For example, when the stroke moves to the maximum limit, the motor is overloaded and locked for a short time, which is likely to cause structural damage

In the case of power failure or power failure, safety, stability, repeatability, retraction and deployment control, and the controllability of the external control system for the large lifting weight are not easy to take into account.

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