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Title:
MIDDLE DRUM ASSEMBLY OF BUILDING DRUM, BUILDING DRUM, AND METHOD FOR REPLACING MIDDLE DRUM BLOCK OF MIDDLE DRUM ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2022/143792
Kind Code:
A1
Abstract:
The present application provides a middle drum assembly of a building drum, the building drum, and a method for replacing a middle drum block of the middle drum assembly. The middle drum assembly comprises: a drum shoulder; a middle drum block provided with a mounting recess and a fixing hole; a first fastener movably provided in the drum shoulder in a penetrating mode and capable of moving along the axial direction of the building drum, the first fastener having a step surface, and when the middle drum block is in butt joint with the drum shoulder along the radial direction of the building drum, the mounting recess being aligned with the first fastener, and the middle drum block extruding the step surface and enabling a part of the first fastener to extend into the mounting recess; and a second fastener, a part of the second fastener being provided in the drum shoulder in a penetrating mode, and after the part of the first fastener extends into the mounting recess, the fixing hole being aligned with the second fastener, the middle drum block approaching the drum shoulder along the axial direction of the building drum, and the part of the second fastener exposed on the drum shoulder extending into the fixing hole. The present application solves the problem of time-consuming and laborious replacement of toothed blocks of drum shoulder portions in the prior art.

Inventors:
SUN XIAOSONG (CN)
YU YIHANG (CN)
SONG JIANLING (CN)
Application Number:
PCT/CN2021/142573
Publication Date:
July 07, 2022
Filing Date:
December 29, 2021
Export Citation:
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Assignee:
MESNAC CO LTD (CN)
QINGDAO MESNAC MACHINERY&ELECTRIC ENG CO LTD (CN)
International Classes:
B29D30/24; B29D30/26
Domestic Patent References:
WO2012031193A12012-03-08
Foreign References:
CN214395529U2021-10-15
CN211390234U2020-09-01
CN209426210U2019-09-24
CN211138203U2020-07-31
CN208343502U2019-01-08
CN105324236A2016-02-10
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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