Protective device used for beam lifting structure of vertical lathe

Abstract

The invention discloses a protective device used for a beam lifting structure of a vertical lathe. The protective device used for the beam lifting structure of the vertical lathe is characterized by comprising a nut, a first bearing assembly, a regulating pad, a sealing ring, a main shaft, a shaft sleeve, a second bearing assembly, a supporting frame, a fastening tool, a pressure cover and a locking bolt, wherein the device main shaft passes through a hole of a box body; the lower end of the main shaft is fixed through a nut; the lower part of the main shaft is provided with the first bearing assembly; the shaft sleeve is arranged outside the main shaft in a sleeving mode; the regulating pad and the sealing ring are arranged on the upper edge of the first bearing assembly; the upper end of the main shaft is provided with the second bearing assembly; the supporting frame is arranged outside the second bearing assembly; the upper end of the main shaft is fixed to the pressure cover through the fastening tool; and the locking bolt is arranged on the pressure cover. The protective device used for the beam lifting structure of the vertical lathe disclosed by the invention has the advantages of being firm and stable, good in sealing effect, secure in structure, and capable of effectively preventing a loosening phenomenon and guaranteeing production safety.

Description

technical field [0001] The invention relates to the field of mechanical protection devices, and in particular provides a protection device for a vertical lathe beam lifting structure. Background technique [0002] At present, the fast lifting structure of the beam of the vertical lathe can quickly reach the set position, and the work efficiency is high, but at the same time of fast rising and falling, it will generate an instantaneous impact force, causing the pre-tightening structure of the lifting screw to loosen, resulting in jumping , causing errors. The lifting safety mechanism is used to ensure that the pre-tightening of the lifting screw is not loose. The lifting pre-tightening safety structure widely used in the existing vertical lathes uses nuts in parallel and a brake ring to achieve the purpose of pre-tightening insurance. In the long-term use of this structure, after a long-term lifting impact force, the nut will be loosened, resulting in axial movement, which po...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned technical problems such as easy loosening, production errors, large potential safety hazards, and short service life of parts. A protective device for the vertical lathe beam lifting structure is provided.

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