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Sleeve drill pipe drilling tool and construction method for pulling out old pile by using drilling tool
The invention relates to a sleeve drill pipe drilling tool. The sleeve drill pipe drilling tool comprises a transition connector connected to a drilling machine, an unearthing hole is formed in the side wall of the lower end of the transition connector, a sleeve drill pipe fitting is detachably connected to the lower portion of the transition connector, and a drill bit is detachably connected to the lower portion of the sleeve drill pipe fitting; the sleeve drill pipe fitting comprises a plurality of sections of cylindrical sleeve drill pipes which communicate with one another, spiral blades are arranged on the inner wall and the outer wall of each section of sleeve drill pipe respectively, and a material hole is formed in the side wall of the lower end of each section of sleeve drill pipe; and a plurality of groups of soil scrapers are annularly arranged on the inner wall of the lower end of each section of sleeve drill pipe. The invention further relates to a construction method for pulling out an old pile through the sleeve drill pipe drilling tool. According to different old pile types, the drill bits and the soil scrapers which are matched with each other are selected, a pile body and a soil body can be rapidly and well separated, and efficient, convenient and stable old pile pulling-out operation is achieved.
本发明涉及套钻管钻具，包括连接在钻机上的过渡接头，所述过渡接头下端侧壁开设有出土洞，所述过渡接头下方可拆卸连接有套钻管件，所述套钻管件下方可拆卸连接钻头；所述套钻管件包括若干节相互连通的筒状套钻管，每节套钻管内、外壁分别设置有螺旋叶片，每节所述套钻管下端侧壁开设有料孔；每节套钻管下端内壁环向均设有多组刮土器。本发明还涉及利用套钻管钻具拔除旧桩的施工方法。本发明根据不同的旧桩类型，选择相适配的钻头及刮土器，可快捷将桩身、土体良好分离，实现高效、便捷、稳定的旧桩拔除作业。
Sleeve drill pipe drilling tool and construction method for pulling out old pile by using drilling tool
The invention relates to a sleeve drill pipe drilling tool. The sleeve drill pipe drilling tool comprises a transition connector connected to a drilling machine, an unearthing hole is formed in the side wall of the lower end of the transition connector, a sleeve drill pipe fitting is detachably connected to the lower portion of the transition connector, and a drill bit is detachably connected to the lower portion of the sleeve drill pipe fitting; the sleeve drill pipe fitting comprises a plurality of sections of cylindrical sleeve drill pipes which communicate with one another, spiral blades are arranged on the inner wall and the outer wall of each section of sleeve drill pipe respectively, and a material hole is formed in the side wall of the lower end of each section of sleeve drill pipe; and a plurality of groups of soil scrapers are annularly arranged on the inner wall of the lower end of each section of sleeve drill pipe. The invention further relates to a construction method for pulling out an old pile through the sleeve drill pipe drilling tool. According to different old pile types, the drill bits and the soil scrapers which are matched with each other are selected, a pile body and a soil body can be rapidly and well separated, and efficient, convenient and stable old pile pulling-out operation is achieved.
本发明涉及套钻管钻具，包括连接在钻机上的过渡接头，所述过渡接头下端侧壁开设有出土洞，所述过渡接头下方可拆卸连接有套钻管件，所述套钻管件下方可拆卸连接钻头；所述套钻管件包括若干节相互连通的筒状套钻管，每节套钻管内、外壁分别设置有螺旋叶片，每节所述套钻管下端侧壁开设有料孔；每节套钻管下端内壁环向均设有多组刮土器。本发明还涉及利用套钻管钻具拔除旧桩的施工方法。本发明根据不同的旧桩类型，选择相适配的钻头及刮土器，可快捷将桩身、土体良好分离，实现高效、便捷、稳定的旧桩拔除作业。
Sleeve drill pipe drilling tool and construction method for pulling out old pile by using drilling tool
套钻管钻具及利用该钻具拔除旧桩的施工方法
ZOU ZHENGSHENG (author) / LIU JIAN (author) / YAN FURONG (author) / ZOU YOUFENG (author) / WANG SHUREN (author) / WANG XINYU (author) / DUN ZHILIN (author) / QIN WANZHEN (author)
2021-08-03
Patent
Electronic Resource
Chinese
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