Electric push rod

Abstract

The invention relates to an electric push rod, in particular to a heavy-load high-precision electric push rod. The electric push rod comprises a reduction gearbox and a guide pipe assembly fixed outside the reduction gearbox, the guide pipe assembly comprises a guide pipe body, the guide pipe body is provided with a plurality of fixing holes extending in the length direction of the guide pipe body, the guide pipe body is tensioned and fixed on the reduction gearbox through a first bolt, the end of the first bolt is pressed into the fixing holes, an inner base plate is arranged between the inner end of the guide pipe body and the reduction gearbox, the hardness of the inner base plate is larger than that of the guide pipe body, the inner base plate is limited between the end face of the reduction gearbox and the end face of the guide pipe body, and the middle of the inner base plate is provided with a first penetrating groove for a lead screw to penetrate through and a first matching hole for avoiding the first bolt. The push rod has the advantages of being capable of bearing large load, higher in mounting precision, lower in noise during use and better in stability.

Description

technical field [0001] The invention relates to an electric push rod, in particular to an electric push rod with large load and high precision. Background technique [0002] In the prior art, the reciprocating motion of the load is often realized by an electric push rod, such as a lift and other devices. The electric push rod includes motor, gear box, conduit, jacking pipe, screw, screw nut and other components. The motor is linked with the screw through the gear box. The pipe sleeve is set outside the screw rod and fixed with the screw nut. The guide tube is fixed outside the reduction box and set outside the jacking pipe. [0003] In the case of heavy load, the conduit is mostly made of steel pipe, and the conduit and the reduction box are fixed by welding, but the welding deformation is large and the precision is poor, and it is difficult to ensure the coaxiality between the conduit, the screw nut, and the jacking pipe; the electric push rod is used When running, you wi...

AI Technical Summary

Problems solved by technology

[0003] In the case of heavy load, the conduit is mostly made of steel pipe, and the conduit and the reduction box are fixed by welding, but the welding deformation is large and the precision is poor, and it is difficult to ensure the coaxiality between the conduit, the screw nu

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