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A platform for research: civil engineering, architecture and urbanism
Multifunctional pre-embedded sleeve taking-out drill bit
The invention provides a multifunctional pre-embedded sleeve taking-out drill bit, and solves problems that when a pre-embedded sleeve is taken out, a sleeper can be destroyed easily, and furthermore the service life of a reinstalled pre-embedded sleeve is greatly shortened, and the reinstalled pre-embedded sleeve cannot be taken out easily. The multifunctional pre-embedded sleeve taking-out drill bit comprises a drill bit body and a connecting handle, the drill bit body is of a cylindrical and hollow structure, a plurality of spiral blade bodies are annularly arranged on the outer circumferential surface of the drill bit body, a chip groove is arranged between any two adjacent blade bodies, the front end of each blade body is provided with an outer cutter head, the drill bit body is provided with an inner cutter head which is inward relative to the outer cutter heads in the radial direction, the drill bit body is next to the inner cutter head, and the hand of spiral of each blade body is left handed. By employing the multifunctional pre-embedded sleeve taking-out drill bit, the sleepers can be prevented from being destroyed, and the multifunctional pre-embedded sleeve taking-out drill bit is labour-saving and time-saving, and can be carried out conveniently.
Multifunctional pre-embedded sleeve taking-out drill bit
The invention provides a multifunctional pre-embedded sleeve taking-out drill bit, and solves problems that when a pre-embedded sleeve is taken out, a sleeper can be destroyed easily, and furthermore the service life of a reinstalled pre-embedded sleeve is greatly shortened, and the reinstalled pre-embedded sleeve cannot be taken out easily. The multifunctional pre-embedded sleeve taking-out drill bit comprises a drill bit body and a connecting handle, the drill bit body is of a cylindrical and hollow structure, a plurality of spiral blade bodies are annularly arranged on the outer circumferential surface of the drill bit body, a chip groove is arranged between any two adjacent blade bodies, the front end of each blade body is provided with an outer cutter head, the drill bit body is provided with an inner cutter head which is inward relative to the outer cutter heads in the radial direction, the drill bit body is next to the inner cutter head, and the hand of spiral of each blade body is left handed. By employing the multifunctional pre-embedded sleeve taking-out drill bit, the sleepers can be prevented from being destroyed, and the multifunctional pre-embedded sleeve taking-out drill bit is labour-saving and time-saving, and can be carried out conveniently.
Multifunctional pre-embedded sleeve taking-out drill bit
ZHANG CHENSHUN (author) / ZHANG ZHE (author) / WANG JIANJUN (author) / CHENG YONGHONG (author) / LI QINGQUAN (author) / SUN ZHIYUAN (author) / BAI HUIJIE (author) / LIU JIAN (author) / XU BAOWANG (author) / GUO CHENGJUN (author)
2016-02-24
Patent
Electronic Resource
English
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau