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Stirring and spraying drill bit for jet grouting pile construction
A stirring and spraying drill bit for jet grouting pile construction comprises a drill body, a first pressure execution assembly, a second pressure execution assembly and stirring blades, the first pressure execution assembly is provided with a first piston rod, a first elastic body and a radial nozzle, and the second pressure execution assembly is provided with a second piston rod and a second elastic body. The stirring blade is hinged between the drill body and the second piston rod. The stirring and spraying drill bit drills holes in the descending process and performs rotary spraying, reaming and stirring in the ascending process, the drill rod is only disassembled and assembled once in the whole process, occupation of a drilling machine is reduced exponentially, and the construction period is shortened exponentially. According to the stirring and spraying drill bit, by means of the pressure of injected cement grout, only the axial nozzles are opened in the descending period, the axial nozzles are closed, the radial nozzles are opened, the stirring blades are opened in the ascending and descending period to stir the cement grout and soil, and the pressure of the injected cement grout and the whole action process meet the requirement of the jet grouting pile construction technology; physical stirring is achieved, the pile body quality is obviously improved, and the cement consumption is reduced.
一种旋喷桩施工用搅喷钻头，包括钻体、第一压力执行组件、第二压力执行组件和搅拌叶片，第一压力执行组件具有第一活塞杆、第一弹性体和径向喷嘴，第二压力执行组件具有第二活塞杆和第二弹性体，搅拌叶片铰接在钻体与第二活塞杆之间。本搅喷钻头在下行时钻孔，在上行时旋喷扩孔和搅拌，全程只拆装钻杆一次，即成倍地减少了对钻机的占用，也成倍地缩短了施工工期。本搅喷钻头利用注入的水泥浆液压力的高低，实现在下行期间只打开轴向喷嘴，在下上行期间关闭轴向喷嘴，打开径向喷嘴，张开搅拌叶片对水泥浆液和土体进行搅拌，注入水泥浆液压力的高低和整个动作流程契合旋喷桩施工工艺要求，实现物理搅拌，使桩体质量得到明显提高，降低水泥用量。
Stirring and spraying drill bit for jet grouting pile construction
A stirring and spraying drill bit for jet grouting pile construction comprises a drill body, a first pressure execution assembly, a second pressure execution assembly and stirring blades, the first pressure execution assembly is provided with a first piston rod, a first elastic body and a radial nozzle, and the second pressure execution assembly is provided with a second piston rod and a second elastic body. The stirring blade is hinged between the drill body and the second piston rod. The stirring and spraying drill bit drills holes in the descending process and performs rotary spraying, reaming and stirring in the ascending process, the drill rod is only disassembled and assembled once in the whole process, occupation of a drilling machine is reduced exponentially, and the construction period is shortened exponentially. According to the stirring and spraying drill bit, by means of the pressure of injected cement grout, only the axial nozzles are opened in the descending period, the axial nozzles are closed, the radial nozzles are opened, the stirring blades are opened in the ascending and descending period to stir the cement grout and soil, and the pressure of the injected cement grout and the whole action process meet the requirement of the jet grouting pile construction technology; physical stirring is achieved, the pile body quality is obviously improved, and the cement consumption is reduced.
一种旋喷桩施工用搅喷钻头，包括钻体、第一压力执行组件、第二压力执行组件和搅拌叶片，第一压力执行组件具有第一活塞杆、第一弹性体和径向喷嘴，第二压力执行组件具有第二活塞杆和第二弹性体，搅拌叶片铰接在钻体与第二活塞杆之间。本搅喷钻头在下行时钻孔，在上行时旋喷扩孔和搅拌，全程只拆装钻杆一次，即成倍地减少了对钻机的占用，也成倍地缩短了施工工期。本搅喷钻头利用注入的水泥浆液压力的高低，实现在下行期间只打开轴向喷嘴，在下上行期间关闭轴向喷嘴，打开径向喷嘴，张开搅拌叶片对水泥浆液和土体进行搅拌，注入水泥浆液压力的高低和整个动作流程契合旋喷桩施工工艺要求，实现物理搅拌，使桩体质量得到明显提高，降低水泥用量。
Stirring and spraying drill bit for jet grouting pile construction
一种旋喷桩施工用搅喷钻头
BAI ZHONGQIANG (author) / WANG XU (author) / NIU YONGBO (author) / WANG QIANYUN (author) / CHANG LINYUE (author) / LI QING (author)
2023-12-12
Patent
Electronic Resource
Chinese
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