CN202039771U

CN202039771U - Long-spiral grouting and guncreting multifunctional drilling tool

Info

Publication number: CN202039771U
Application number: CN2011200902286U
Authority: CN
Inventors: 邢占东; 岳霞
Original assignee: WEIHAI CONSTRUCTION GROUP CO Ltd
Current assignee: Shandong Wei Jian ground Science and Technology Ltd.
Priority date: 2011-03-31
Filing date: 2011-03-31
Publication date: 2011-11-16
Anticipated expiration: 2021-03-31

Abstract

The utility model discloses a long-spiral grouting and guncreting multifunctional drilling tool which comprises a drill rod and a drill bit; spiral vanes are arranged on the outer wall of the drill rod and the outer wall of the drill bit; a grout outlet is arranged on the side surface of the drill bit; both the drill rod and the drill bit comprise outer pipes and inner pipes serving as concrete pumping passages; the inner pipes are positioned in the outer pipes; the upper ends of the inner pipes are fixedly connected with the inner wall of the drill rod; the lower ends of the inner pipes are connected with the bottom of the drill bit; the diameters of the outer walls of the inner pipes are smaller than those of the inner walls of the outer pipes; a gap is formed between the outer wall of the inner pipe and the inner wall of the outer pipe; more than one watering and grouting pipe is arranged in the gap; and the grout outlet is communicated with the tail end of the watering and grouting pipe. The utility model has the advantages that the main pipe of the drilling tool is designed into a double pipe, the outer pipe bears the boring load; the inner pipe serves as the concrete pumping passage, so that the guncreting function is fulfilled; and the watering and grouting pipe is laid between the inner pipe and the outer pipe, so that the watering and sludge injecting function is met.

Description

Long spiral slip casting, the multi-functional drilling tool of pressure concrete injecting

Technical field

The utility model relates to a kind of long spiral slip casting, the multi-functional drilling tool of pressure concrete injecting, can be used in the filling pile construction of long auger pressure concrete injecting, in formation of pile by can or satisfying above-mentioned multiple function simultaneously by drilling tool water filling in the hole, slip casting, pressure concrete injecting.

Background technology

Present long auger pressure concrete injecting castinplace pile drilling tool can only satisfy a kind of function of pressure concrete injecting, usually in a lot of engineerings, because the reason of geology need be injected water under high pressure in the hole in boring procedure, to improve rate of penetration; Need in the engineering construction that also has to inject suitable quantity of water mud in the hole, be used for the supporting capacity that consolidated earth mass improves stake, former drilling tool does not possess above-mentioned functions, and therefore being badly in need of a kind of multi-functional drilling tool solves the problems referred to above.

Summary of the invention

The utility model purpose provides a kind of long spiral slip casting, the multi-functional drilling tool of pressure concrete injecting, can satisfy the multiple use of slip casting, water filling, pressure concrete injecting simultaneously.

To achieve these goals, the utility model is by the following technical solutions:

A kind of long spiral slip casting, the multi-functional drilling tool of pressure concrete injecting, comprise drilling rod and drill bit, be equipped with helical blade on drilling rod and the drill bit outer wall, the drill bit side is provided with grout outlet, drilling rod and drill bit include outer heavily pipe and heavily manage as the interior of pumping concrete passage, in heavily pipe to be positioned at outer heavily pipe inner, in heavily pipe upper end fixedly connected with the drilling rod inwall, the lower end links to each other with the drill bit bottom, and the interior outer diameter of heavily managing is less than outer heavy inside pipe wall diameter, be formed with the gap between the two, be provided with more than one water filling grouting pipeline in this gap, the terminal grout outlet that is communicated with of this water filling grouting pipeline.

Among the utility model embodiment, interior heavily pipe upper end is welded as a whole with the drilling rod inwall.

Among the utility model embodiment, interior heavily pipe is concentric setting with heavily managing outward.

Among the utility model embodiment, described interior heavy bore is more than or equal to 125mm.

Advantage of the present utility model:

Drilling tool is responsible for and is designed to dual pipe, and outer tube bears the load that creeps into, and interior heavily pipe is the passage of pumping concrete, satisfies the function of pressure concrete injecting, lays more than one water filling grouting pipeline between inside and outside double pipe, satisfies the function of cement injection, water filling, notes mud.

Description of drawings

Fig. 1 is the profile of embodiment 1 drilling tool;

Fig. 2 is the profile of embodiment 2 drilling tools;

Fig. 3 is the internal structural map of drilling rod;

Fig. 4 is the internal structural map of drill bit;

Among the figure 1, helical blade, 2, heavy pipe outward, 3, interior heavily pipe, 4, the water filling grouting pipeline, 5, grout outlet.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further details, following explanation is only exemplary, does not limit protection domain of the present utility model.

Embodiment 1

With reference to the accompanying

drawings

1,3 and 4, a kind of long spiral slip casting, the multi-functional drilling tool of pressure concrete injecting, comprise drilling rod and drill bit, be equipped with helical blade 1 on drilling rod and the drill bit outer wall, the drill bit side is provided with grout outlet 5, drilling rod and drill bit include outer heavily manages 2 and heavily manage 3 as the interior of pumping concrete passage, in heavily manage 3 with heavily manage 2 outward for concentric setting, in heavily manage 3 and be positioned at outer 2 inside of heavily managing, interior 3 upper ends and the drilling rod inwall of heavily managing is for fixedlying connected, the lower end links to each other bottom drill bit, and interior 3 outer diameters of heavily managing are less than heavily managing 2 inner diameters outward, be formed with the gap between the two, be provided with a water filling grouting pipeline 4 in this gap, these water filling grouting pipeline 4 terminal grout outlets 5 that are communicated with.

Consider and heavily manage 3 upper ends in the convenient fixing and the drilling rod inwall is welded as a whole that those skilled in the art can expect that the two can bolt and nut is secondary to be connected by radially being provided with along drilling tool certainly.

Heavily manage 3 internal diameters in described more than or equal to 125mm, to satisfy the requirement of pumping concrete.

Embodiment 2

With reference to the accompanying drawings 2, interior heavily manage 3 and heavily manage 2 outward between be provided with three water filling grouting pipelines 4, other part-structures are with embodiment 1.

Below only described basic principle of the present utility model and preferential embodiment, those skilled in the art can make a lot of changes and improvements under the situation that does not break away from basic principle, and these changes and improvements should belong to protection domain of the present utility model.

Claims

1. one kind long spiral slip casting, the multi-functional drilling tool of pressure concrete injecting, comprise drilling rod and drill bit, be equipped with helical blade (1) on drilling rod and the drill bit outer wall, it is characterized in that: the drill bit side is provided with grout outlet (5), drilling rod and drill bit include outer heavily pipe (2) and as the interior heavily pipe (3) of pumping concrete passage, in heavily pipe (3) be positioned at outer heavily pipe (2) inside, in heavily the pipe (3) upper end fixedly connected with the drilling rod inwall, the lower end links to each other with the drill bit bottom, and interior heavily pipe (3) outer diameter is less than heavily managing (2) inner diameter outward, be formed with the gap between the two, be provided with more than one water filling grouting pipeline (4) in this gap, the terminal grout outlet (5) that is communicated with of this water filling grouting pipeline (4).

2. according to the described long spiral slip casting of claim 1, the multi-functional drilling tool of pressure concrete injecting, it is characterized in that: interior heavily pipe (3) upper end is welded as a whole with the drilling rod inwall.

3. according to claim 1 or 2 described long spiral slip castings, the multi-functional drilling tool of pressure concrete injecting, it is characterized in that: interior heavily pipe (3) with outward heavily pipe (2) be concentric setting.

4. according to claim 1 or 2 described long spiral slip castings, the multi-functional drilling tool of pressure concrete injecting, it is characterized in that: in described heavily pipe (3) internal diameter more than or equal to 125mm.