A high-pressure rotary grouting pile drill bit based on the application of road and bridge construction

A technology of high-pressure rotary grouting piles and drill bits, which is applied in the direction of drill bits, drilling tools, earthwork drilling and mining, etc. It can solve the problems of manpower and time consumption, reduce construction efficiency, delay construction period, etc., and achieve the effect of improving functionality and efficiency

Active Publication Date: 2021-11-26
SHANGHAI YUANFENG UNDERGROUND ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the size of the pile hole formed by most of the existing drill bits is fixed, and it is impossible to flexibly adjust the size of the pile hole formed by the drill bit according to the actual use needs. On the outer wall, when the high-pressure rotary grouting pile machine is drilling in the soil, the gravel and soil in the soil are easy to enter the nozzle and block the slurry delivery pipe, so that the cement slurry cannot flow out normally and the subsequent construction The process cannot continue, and it takes manpower and time to lift the drill pipe out of the hole and then dredge it, which reduces the construction efficiency and delays the construction period

Method used

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  • A high-pressure rotary grouting pile drill bit based on the application of road and bridge construction
  • A high-pressure rotary grouting pile drill bit based on the application of road and bridge construction
  • A high-pressure rotary grouting pile drill bit based on the application of road and bridge construction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 1 to Figure 6 Shown, comprise rod body 1 and conical head 6, described conical head 6 is positioned at the bottom end of rod body 1, and described rod body 1 is provided with the spray pipe 7 that communicates with the bottom of conical head 6, is empty in described rod body 1 Cavity structure, the water spray pipe 7 is located in the cavity, the cavity is provided with a slurry delivery pipe 3, and the water spray tube 7 runs through the slurry delivery tube 3; the cavity of the rod body 1 is also provided with movable components 2. The movable assembly 2 is set on the outer wall of the slurry delivery pipe 3, and the movable assembly 2 can move along the axial direction of the slurry delivery pipe 3, and the side walls of the drill blades 5 facing the direction of the conical head 6 are provided with stoppers. Plate 10; the outer peripheral wall of the rod body 1 is also provided with a number of drill blades 5, the drill blades 5 are distributed on th...

Embodiment 2

[0043] On the basis of Embodiment 1, the movable assembly 2 includes a conical member 22 and a connecting pipe 20, the conical member 22 is located at the bottom of the connecting pipe 20, and a liquid storage cavity 21 is arranged in the conical member 22, and the liquid storage The cavity 21 communicates with the connecting pipe 20, and the slurry delivery pipe 3 is inserted through the connecting pipe 20 and the liquid storage chamber 21 in sequence.

Embodiment 3

[0045] On the basis of Embodiment 1, the drill blade 5 is further provided with a first elastic member 4 , and the first elastic member 4 is sleeved on the drill blade 5 and located in the cavity of the rod body 1 .

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Abstract

The invention discloses a high-pressure rotary grouting pile drill bit based on the application of road and bridge construction, which includes a rod body and a conical head. components; the outer wall of the rod body is also provided with a number of drill blades, when the movable assembly moves towards the direction of the cone head, the movable assembly can push the drill blades to move away from the rod body, and the side walls of the drill blades facing the direction of the cone head There is a baffle; there is also a telescopic tube in the cavity of the rod body, one end of the telescopic tube is connected with the slurry delivery pipe, and the other end is provided with a joint. One end of the assembly is facing the drill blade, and the other end is located in the cavity of the rod body. The invention can adjust the diameter of the pile hole drilled by the drill bit to meet different use requirements, and at the same time ensure that the drill bit can prevent the mud and stones in the soil from blocking the slurry delivery pipe during the drilling process, thereby improving the construction efficiency.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction equipment, in particular to a high-pressure rotary grouting pile drill bit based on road and bridge construction applications. Background technique [0002] High-pressure rotary grouting piles use high-pressure rotating nozzles to spray cement slurry into the soil layer and mix with the soil to form a continuous lapped cement reinforcement. The construction area is small, the vibration is small, the noise is low, and it has the advantages of saving wood and steel, durable, and low cost. It has been widely used in the basic engineering of hydraulic construction, industrial construction, civil construction and bridges. The high-pressure rotary grouting pile is to use a drilling rig to drill the rotary grouting pipe and the nozzle at the design elevation of the pile bottom, pass the pre-prepared grout through the high-pressure generating device to make the liquid flow obtain huge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/32E21B10/60E21B10/61E21B12/00
CPCE21B10/32E21B10/60E21B10/61E21B12/00
Inventor 李义政
Owner SHANGHAI YUANFENG UNDERGROUND ENG TECH
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