CN219587511U - A drilling tool for CFG pile construction on composite foundation - Google Patents

Abstract

The utility model discloses a drilling tool for composite foundation CFG pile construction, which relates to the technical field of foundation pile drilling tools, and comprises a main body. A drill pipe is arranged inside, a soil discharge port is opened inside the drill tube, a drive installation module is connected to the top of the drill tube, and a CFG pile is inserted into the soil discharge port of the drill tube. The utility model drills holes synchronously by cooperating with the drill rods installed inside. The main body of the drill barrel can also play a role in reinforcing the drilled holes when drilling, preventing collapse and deformation, so that the hole wall maintains a relatively smooth state. It is also convenient for subsequent loading of CFG piles. The soil is transported through the inner wall of the drill pipe to the top for soil discharge through the soil-drilling thread of the drill pipe. The drill pipe cooperates with the drill pipe to drill the soil at the same time. The efficiency is higher, and the drill pipe is pulled out from the drill pipe. Finally, the CFG pile is lowered through the soil discharge port of the drill tube, and the drill tube can be pulled out after the pile is lowered, and the integration of drilling and fixing the pile is completed, and the construction efficiency is higher.

Description

A drilling tool for CFG pile construction on composite foundation

technical field

The utility model relates to the technical field of foundation pile drilling tools, in particular to a drilling tool for composite foundation CFG pile construction.

Background technique

Composite foundation means that part of the soil of the natural foundation is reinforced or replaced during the foundation treatment process, or reinforcement materials are set in the natural foundation, and the reinforcement area is an artificial foundation composed of two parts: matrix and reinforcement. Under the action of load, the matrix and the reinforcement bear the load together. The CFG pile is a cement fly ash gravel pile, which is made of gravel, stone chips, sand, fly ash mixed with cement and water, and is made by various pile forming machines. A variable strength pile with a certain strength is formed.

CFG pile is a kind of low-strength concrete pile, which can make full use of the bearing capacity of the soil between the piles and transfer the load to the deep foundation, and has good technical performance and economic effect. Before placing CFG piles in the composite foundation, the foundation pile drilling tool is generally used to drill and drill reserved holes. There are following problems at prior art:

Chinese Patent Application Publication (Announcement) No.: CN213510494U, Application No.: CN202022695037.4 discloses a drilling tool for CFG pile construction on a composite foundation, including a drill rod, which includes a polished rod section and a rotary extruded section from top to bottom. and the drilling section, the rotary extrusion section and the polished rod section are integrally arranged, the rotary extrusion section is provided with a helical pattern, the drilling section is provided with a first helical blade, the upper end of the drilling section is connected to the rotary The lower end of the extrusion section is detachably connected, and the lower end of the drilling section is provided with a drill bit. In the whole process of foundation pile formation of the application, no external soil discharge will be generated, thereby omitting the cost of external soil discharge and transportation; the pile body hole forming and pile body construction can be completed quickly and at one time, which can simplify the process, improve work efficiency, reduce cost. However, when drilling some relatively soft natural foundations, when the drill bit is pulled out, there is no device that can reinforce the drilled hole, and the soft natural foundation soil may collapse in the hole when the drill bit is pulled out. And then affect the construction efficiency. In this context, a drilling tool for CFG pile construction on composite foundation is proposed to solve the above problems.

Utility model content

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A drilling tool for composite foundation CFG pile construction, comprising a main body, the bottom of the main body is provided with a drill bit device, the main body includes a drill tube, the inside of the drill tube is provided with a drill pipe, and the inside of the drill tube is provided with a A soil discharge port, the top of the drill tube is driven and connected with a drive installation module, and a CFG pile is inserted into the soil discharge port of the drill tube, and the drive installation module includes a mounting ring; the drill tube includes a drill tube The main body; the drill rod includes earth-drilling threads.

The further improvement of the technical solution of the utility model lies in that: bolt grooves are opened on the installation seat ring, a soil discharge port is opened in the installation seat ring and the drill barrel, and a first drive card slot is opened in the installation seat ring .

The further improvement of the technical solution of the utility model lies in that: the top of the drill cylinder is driven and clamped in the drive installation module through the first drive slot.

The further improvement of the technical solution of the utility model lies in that: a drive ring is fixedly installed on the top of the drill barrel body, a toothed drill bit is fixedly installed on the bottom of the drill barrel body, and the drill bit device includes a toothed drill bit.

The further improvement of the technical solution of the utility model lies in that: the drill tube is driven and installed in the drive installation module through the drive ring at the top.

The further improvement of the technical solution of the utility model lies in that: the top of the soil drilling thread is provided with a drive connection end, and a second drive slot is opened at the drive connection end, and the drive connection end is located at the center of the top of the drill rod. A driving rod groove is opened at the place, and a tip drill bit is fixedly installed at the bottom of the drill rod.

The further improvement of the technical solution of the utility model lies in that: the drill bit device includes a sharp-point drill bit.

Owing to adopting above-mentioned technical scheme, relative to the prior art, the technical progress of the utility model is:

The utility model provides a drilling tool for composite foundation CFG pile construction. Under the joint action of the installation seat ring, the bolt groove and the first driving slot of the driving installation module, the top of the drill barrel is driven and clamped by the first driving slot. In the drive installation module, the drill cylinder is driven to rotate through the drive installation module. Under the joint action of the drill cylinder body, the toothed drill bit and the drive ring, the drill cylinder is driven and installed in the drive installation module through the top drive ring. The drive installation module is driven to rotate, and under the action of the toothed drill bit fixedly installed at the bottom of the main body of the drill barrel, it rotates to drill holes in the foundation. At the same time, with the drill pipe installed inside the drill pipe, the drill pipe and the drill pipe can be drilled synchronously. Compared with the traditional single drill bit, the drilling efficiency is higher, and the drill barrel body of the drill barrel can also play a role in reinforcing the drilled hole when drilling, preventing collapse and deformation, and keeping the hole wall in a relatively smooth state , and it is also convenient for subsequent CFG piles.

The utility model provides a drilling tool for CFG pile construction on a composite foundation. Under the joint action of the drilling thread of the drill rod, the driving connection end, the driving rod groove, the tip drill bit and the second driving slot, the top of the drill rod is set There is a drive connection end, the second drive card slot and the drive rod groove set at the drive connection end are used for threaded connection with the drive device of the drill pipe and then snapped in. By driving the drill pipe to rotate, the tip drill bit at the bottom is driven to rotate. For foundation drilling and soil drilling, the drill pipe is set inside the drill barrel, and the soil is conveyed through the inner wall of the drill barrel to the top for soil discharge through the drill thread. The soil in the barrel can also be conveyed and discharged through the drill pipe, and the drilling depth of the drill pipe can be flexibly adjusted. After the hole is formed, the drill barrel can be synchronized to the bottom of the inner wall of the borehole, and the drilled hole can be reinforced to prevent The soft natural foundation soil may collapse in the hole when the drill bit is pulled out. After the drill pipe is pulled out from the drill barrel, the CFG pile is lowered through the soil discharge port of the drill barrel. After the pile is lowered, the drill barrel can be pulled out. The drilling and fixing of piles is integrated, and the construction efficiency is higher.

Description of drawings

Fig. 1 is the structural representation of a kind of composite foundation CFG pile construction drilling tool of the present utility model;

Fig. 2 is a schematic diagram of the explosion structure of the utility model;

Fig. 3 is the structural representation of drill pipe of the present utility model;

Fig. 4 is a schematic diagram of when a CFG pile is lowered by a drilling tool for construction of a composite foundation CFG pile according to the present invention.

In the figure: 1. Main body; 2. Drill barrel; 3. Drill pipe; 4. Drive installation module; Groove; 43, mounting seat ring; 21, drive ring; 22, drill barrel main body; 23, toothed drill bit; 31, second drive slot; 32, drive rod slot; 33, drive connection end; 34, soil drilling thread ; 35, tip drill bit.

Detailed ways

Below in conjunction with embodiment the utility model is described in further detail:

Example

As shown in Figures 1-4, the utility model provides a drilling tool for composite foundation CFG pile construction, including a main body 1, a drill bit device 6 is arranged at the bottom of the main body 1, the main body 1 includes a drill barrel 2, and the drill barrel 2 A drill pipe 3 is arranged inside, a soil discharge port 5 is opened inside the drill tube 2 , a drive installation module 4 is connected to the top of the drill tube 2 , and a CFG pile 7 is inserted into the soil discharge port 5 of the drill tube 2 .

Example

As shown in Figures 1-4, on the basis of Embodiment 1, the utility model provides a technical solution: preferably, the drive installation module 4 includes a mounting ring 43, and a bolt groove 42 is opened on the mounting ring 43, The installation seat ring 43 and the drill barrel 2 are provided with a soil discharge port 5, and the installation seat ring 43 is provided with a first drive slot 41, and the top of the drill barrel 2 is driven and clamped to the drive installation module through the first drive slot 41 4, the drill tube 2 includes a drill tube main body 22, the top of the drill tube main body 22 is fixedly equipped with a drive ring 21, and the bottom of the drill tube main body 22 is fixedly equipped with a toothed drill bit 23, and the drill bit device 6 includes a toothed drill bit 23. The barrel 2 is driven and installed in the drive installation module 4 through the drive ring 21 on the top, and the inside of the drill barrel 2 is provided with a drill rod 3 .

In this embodiment, under the joint action of the installation seat ring 43 of the drive installation module 4 , the bolt groove 42 , and the first drive slot 41 , the top of the drill cylinder 2 is driven and clamped to the drive installation via the first drive slot 41 . In the module 4, the drill tube 2 is driven to rotate through the drive installation module 4, and under the joint action of the drill tube body 22, the toothed drill bit 23, and the drive ring 21 of the drill tube 2, the drill tube 2 is driven and installed on the top drive ring 21. In the drive installation module 4, the drive installation module 4 is driven to rotate, and under the action of the toothed drill bit 23 fixedly installed at the bottom of the drill pipe main body 22, the rotation drills the foundation, and at the same time cooperates with the drill pipe 3 installed inside the drill pipe 2 , the drill tube 2 and the drill rod 3 can be drilled synchronously. Compared with the traditional single drill bit, the drilling efficiency is higher. The drill tube main body 22 of the drill tube 2 can also play a role in drilling The hole reinforcement effect prevents collapse and deformation, keeps the hole wall in a relatively smooth state, and facilitates the subsequent CFG pile 7.

Example

As shown in Figures 1-4, on the basis of Embodiment 1, the utility model provides a technical solution: preferably, the drill rod 3 includes a soil-drilling thread 34, and the top of the soil-drilling thread 34 is provided with a driving connection end 33 , the drive connection end 33 is provided with a second drive slot 31, the drive connection end 33 is provided with a drive rod groove 32 at the center of the top of the drill rod 3, the bottom of the drill rod 3 is fixedly equipped with a tip drill bit 35, the drill bit device 6 includes a tip drill bit 35, the inside of the drill tube 2 is provided with a drill pipe 3, and a CFG pile 7 is inserted into the soil discharge port 5 of the drill tube 2.

In this embodiment, under the joint action of the earth-drilling thread 34 of the drill rod 3, the drive connection end 33, the drive rod groove 32, the tip bit 35, and the second drive slot 31, the top of the drill rod 3 is provided with a drive The connecting end 33, the second driving slot 31 and the driving rod groove 32 provided at the driving connecting end 33 are used to be threadedly connected with the driving device of the drill pipe 3 and then snapped in, by driving the drill pipe 3 to rotate, thereby driving the bottom The cutting-edge drill bit 35 rotates to drill holes in the foundation. The drill pipe 3 is arranged inside the drill barrel 2, and the soil is transported to the top through the inner wall of the drill barrel 2 through the soil-drilling thread 34. The drill pipe 3 cooperates with the drill barrel 2 to simultaneously Soil drilling is more efficient, and the soil in the drill pipe 2 can also be conveyed and discharged through the drill pipe 3, and the drilling depth of the drill pipe 3 can be flexibly adjusted. After the hole is formed, the drill pipe 2 is synchronized to the drill At the bottom of the inner wall, the drilled hole can be reinforced to prevent the soft natural foundation soil from collapsing in the hole when the drill bit is pulled out. After the drill pipe 3 is pulled out from the drill tube 2, the CFG pile 7 passes through The soil discharge port 5 of the drill tube 2 is piled, and the drill tube 2 can be pulled out after the pile is completed, and the drilling and fixing of the pile is integrated to complete, and the construction efficiency is higher.

Let's talk about the working principle of the drilling tool for CFG pile construction on a composite foundation.

As shown in Figures 1-4, under the joint action of the mounting seat ring 43, the bolt groove 42, and the first driving slot 41 of the driving installation module 4, the top of the drill barrel 2 is driven and clamped in the first driving slot 41. In the drive installation module 4, the drill tube 2 is driven to rotate through the drive installation module 4, and under the joint action of the drill tube body 22, the toothed drill bit 23, and the drive ring 21 of the drill tube 2, the drill tube 2 is driven by the drive ring 21 at the top Installed in the drive installation module 4, driven by the drive installation module 4 to rotate, under the action of the toothed drill bit 23 fixedly installed on the bottom of the drill tube main body 22, the rotation drills the foundation, and at the same time cooperates with the drill bit installed inside the drill tube 2 The rod 3, the drill tube 2 and the drill rod 3 can be drilled synchronously. Compared with the traditional single drill bit, the drilling efficiency is higher. The drill tube body 22 of the drill tube 2 can also play a role in drilling Good hole reinforcement effect prevents collapse and deformation, keeps the hole wall in a relatively smooth state, and facilitates the subsequent CFG pile 7 to pass through the drilling thread 34 of the drill pipe 3, the driving connection end 33, the driving rod groove 32, and the tip drill bit 35 1. Under the combined action of the second drive slot 31, the top of the drill rod 3 is provided with a drive connection end 33, and the second drive slot 31 and the drive rod groove 32 provided at the drive connection end 33 are used for connecting with the drill rod 3. After the driving device is threaded and clamped, by driving the drill rod 3 to rotate, the tip drill bit 35 at the bottom is driven to rotate, and the foundation is perforated to drill soil. The soil is conveyed to the top through the inner wall of the drill pipe 2, and the drill pipe 3 cooperates with the drill pipe 2 to drill the soil at the same time, which is more efficient. The soil in the drill pipe 2 can also be conveyed and discharged through the drill pipe 3, and the drill The drilling depth of the rod 3, after the drilling is formed, the drill barrel 2 is synchronized to the bottom of the inner wall of the drilling hole, and the drilled hole can be reinforced to prevent the soft natural foundation soil from being pulled out with the drill bit. Subsidence occurs in the hole. After the drill pipe 3 is pulled out from the drill barrel 2, the CFG pile 7 is lowered through the soil discharge port 5 of the drill barrel 2. After the pile is lowered, the drill barrel 2 can be pulled out, and the pile is drilled to fix the pile. completed, the construction efficiency is higher.

The above has generally described the utility model in detail, but on the basis of the utility model, some modifications or improvements can be made to it, which is obvious to those skilled in the art. Therefore, any modification or improvement that does not depart from the spirit of the present utility model is within the protection scope of the present utility model.

Claims (7)

1. A drilling tool for composite foundation CFG pile construction, comprising a main body (1), characterized in that: the bottom of the main body (1) is provided with a drill bit device (6), and the main body (1) includes a drill barrel ( 2), the inside of the drill tube (2) is provided with a drill pipe (3), the inside of the drill tube (2) is provided with a soil discharge port (5), and the top drive of the drill tube (2) is connected with a drive The installation module (4), the CFG pile (7) is plugged into the soil discharge port (5) of the drill barrel (2), and the drive installation module (4) includes an installation seat ring (43); the drill The barrel (2) includes a drill barrel body (22); the drill rod (3) includes earth-drilling threads (34). 2. The drilling tool for CFG pile construction on composite foundation according to claim 1, characterized in that: the mounting seat ring (43) is provided with a bolt groove (42), and inside the mounting seat ring (43) A soil discharge port (5) is opened in the drill barrel (2), and a first driving slot (41) is opened in the installation seat ring (43). 3. A drilling tool for CFG pile construction on composite foundation according to claim 2, characterized in that: the top of the drill barrel (2) is driven and clamped to the drive installation module ( 4) Inside. 4. A drilling tool for CFG pile construction on composite foundation according to claim 1, characterized in that: a drive ring (21) is fixedly installed on the top of the drill pipe main body (22), and the drill pipe main body (22) ) is fixedly installed with a toothed drill bit (23), and the drill bit device (6) includes a toothed drill bit (23). 5 . The drilling tool for CFG pile construction on composite foundation according to claim 4 , characterized in that: the drill tube ( 2 ) is driven and installed in the driving installation module ( 4 ) through the driving ring ( 21 ) at the top. 6 . 6. The drilling tool for CFG pile construction on composite foundation according to claim 1, characterized in that: the top of the soil drilling thread (34) is provided with a driving connection end (33), and the driving connection end (33 ) is provided with a second drive slot (31), the drive connection end (33) and the center of the top of the drill rod (3) is provided with a drive rod slot (32), the drill rod (3) The bottom is fixedly equipped with a tip drill bit (35). 7 . The drilling tool for CFG pile construction on composite foundation according to claim 6 , characterized in that: the drill bit device ( 6 ) includes a tip drill bit ( 35 ).