CN211623356U - Drill rod and drilling tool - Google Patents

Abstract

The utility model provides a drill pipe and a drill tool, which relate to the technical field of construction tools. The drill rod includes a core rod, a helical blade and a guide plate, the core rod includes a helical section and a smooth section, and a helical blade is arranged on the body of the helical section of the core rod, and the helical blade extends helically along the axial direction of the core rod. The guide plate is vertically fixed on the shaft of the smooth section along the axial direction of the core rod, and the side of the guide plate facing away from the helical blade is inclined from the direction of the helical section to the smooth section toward the direction close to the central axis of the core rod. The maximum distance between the vertical distances between the side edge of the guide plate away from the core rod and the central axis of the core rod is not greater than the vertical distance between the outer edge of the helical blade and the central axis of the core rod. The utility model relieves the prior art that when the soil squeezed cast-in-place pile is constructed in the stratum that is easy to collapse the hole, after the drill pipe in the short helical drilling tool is drilled into the ground, the soil will rebound and stick to the drill pipe, which is not provided with the helical blade. On the rod body, it will cause a technical problem that greatly hinders the pulling of the drill rod.

Description

Drill pipe and drilling tools

technical field

The utility model relates to the technical field of construction tools, in particular to a drill pipe and a drill tool.

Background technique

The process of constructing extruded cast-in-place piles in the stratum needs to be realized by using a drilling tool. The drill pipe in the drilling tool is hollow, and the drill pipe is used to drill into the soil to form a pile hole for piling. is used to form a channel into the concrete.

In order to facilitate the drilling of the drill pipe into the ground, the drill pipe in the above drilling tool is provided with a helical blade extending along its axial direction. Because the longer the helical blade is, the larger the contact area between the outer edge of the helical blade and the soil, the greater the torque required for the drill pipe to rotate into the soil, which in turn makes the construction efficiency lower and the cost of the drill pipe higher. Therefore, an existing drilling tool for extruding cast-in-place piles in the ground is a short auger drilling tool. The helical blade on the drill rod in the short auger drill extends from one end of the drill rod to the middle of the drill rod, and the other end of the drill rod to the helical blade is a rod segment with a smooth surface.

However, when the soil is squeezed and cast-in-place piles are constructed in the stratum that is easy to collapse holes, after the drill pipe in the short auger is drilled into the ground, the soil will rebound and stick to the rod body of the drill pipe without the helical blade, thereby forming a strong resistance. When the drill pipe is pulled up, it will greatly hinder the process of pulling out the drill pipe.

Utility model content

The purpose of the present utility model is to provide a drill pipe and a drilling tool, so as to alleviate the existing in the prior art when the soil squeezed cast-in-place pile is constructed in the stratum that is easy to collapse the hole, after the drill pipe in the short auger drilling tool is drilled into the ground, the soil Experience the technical problem of rebounding and sticking to the rod body without helical blades that sticks to the drill rod, thereby forming a strong resistance, which will greatly hinder the process of pulling out the drill rod when the drill rod is pulled up.

The drill rod provided by the utility model comprises a core rod, a spiral blade and a guide plate;

The core rod includes a helical section and a smooth section, a helical blade is arranged on the body of the helical section of the core rod, and the helical blade extends helically along the axial direction of the core rod;

The guide plate is vertically fixed on the shaft of the smooth section of the core rod along the axial direction of the core rod; the other sides of the guide plate are away from the side of the helical blade, and the direction from the helical section of the core rod to the smooth section is toward the center axis of the core rod. inclined direction;

The maximum distance between the vertical distances between each of the sides of the guide plate facing away from the core rod and the central axis of the core rod is not greater than the vertical distance between the outer edge of the helical blade and the central axis of the core rod.

Further, the guide plate is a triangular plate. Among the three vertices of the guide plate, the vertical distance between the vertex away from the core rod and the central axis of the core rod is equal to the vertical distance between the outer edge of the spiral blade and the central axis of the core rod.

Further, among the three sides of the guide plate, the length of the side fixed on the smooth section of the core rod and the length of the side away from the helical blade are greater than the length of the other side.

Further, the guide plate is an obtuse-angled triangular plate, and among the three vertices of the guide plate, the vertex corresponding to the maximum inner angle of the guide plate is the vertex away from the core rod.

Further, there are a plurality of guide plates, and the plurality of guide plates are arranged on the rod body of the smooth section of the core rod at intervals along the circumferential direction of the core rod.

Further, a plurality of guide plates are fixed on the rod body of the smooth section of the core rod at equal intervals along the circumferential direction of the core rod.

Further, the drill pipe also includes a guide pipe, the core rod is hollow, and the guide pipe is sleeved and fixed in the core rod.

Further, the outer edge of the helical blade is toothed.

Further, the side of the guide plate away from the helical blade is toothed.

The drilling tool provided by the present invention includes the drill pipe described in any one of the above technical solutions.

The drill pipe and drill tool provided by the utility model can produce the following beneficial effects:

The drill rod provided by the utility model comprises a core rod, a helical blade and a guide plate, the core rod includes a helical section and a smooth section, the helical blade is arranged on the body of the helical section of the core rod, and the helical blade extends helically along the axial direction of the core rod. The guide plate is vertically fixed on the shaft of the smooth section of the core rod along the axial direction of the core rod; the other sides of the guide plate are away from the side of the helical blade, and the direction from the helical section of the core rod to the smooth section is toward the center axis of the core rod. slanted direction. The maximum distance between the vertical distances between each of the sides of the guide plate facing away from the core rod and the central axis of the core rod is not greater than the vertical distance between the outer edge of the helical blade and the central axis of the core rod. When constructing extruded cast-in-situ piles in the stratum, the helical section on the core rod with the helical blade will be drilled into the ground first, and the helical blade will facilitate the drilling of the drill rod into the ground. The maximum distance in the vertical distance from the central axis of the mandrel is not greater than the vertical distance between the outer edge of the helical blade and the central axis of the mandrel, so the guide plate will not hinder the helical blade during the process of drilling into the ground drilling process. The side of the guide plate away from the helical blade is inclined from the helical section of the core rod to the smooth section towards the direction close to the central axis of the core rod, which will increase the pressure of the drill rod on the soil when the core rod is pulled out from the ground. , which will reduce the resistance between the drill pipe and the soil. Therefore, when the drill pipe is pulled up, even if the soil rebounds and sticks to the smooth section of the core rod, the drill pipe is easy to be pulled out from the soil because the guide plate will increase the pressure of the drill pipe on the soil.

In addition, the guide plate can also support the soil when the soil rebounds and sticks to the shaft of the smooth section of the mandrel, preventing the soil from sticking to the shaft of the smooth section of the mandrel in a large area, thereby reducing the The resistance between the small drill pipe and the soil is easy to pull up the drill pipe.

Compared with the prior art, the drill pipe provided by the utility model can use the guide plate to increase the pressure of the drill pipe on the soil during the process of pulling the drill pipe up, thereby reducing the resistance between the drill pipe and the soil body, which is convenient for drilling. Pull the drill pipe out of the soil.

The drilling tool provided by the present invention includes the above-mentioned drill rod, so the drilling tool provided by the present invention and the above-mentioned drill pipe can achieve the same beneficial effect.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the structural representation of the drill pipe provided by the first embodiment of the present invention;

Fig. 2 is a sectional view of the drill pipe in Fig. 1;

FIG. 3 is a top view of the drill pipe of FIG. 1 .

Icons: 1-core rod; 10-joint; 2-spiral blade; 3-guide plate; 4-conduit; 5-locating ring.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

As shown in FIGS. 1 to 3 , the drill rod provided in this embodiment includes a core rod 1, a helical blade 2 and a guide plate 3, the core rod 1 includes a helical section and a smooth section, and the shaft of the helical section of the core rod 1 is provided with a spiral The blade 2, the helical blade 2 extends helically along the axial direction of the core rod 1. The guide plate 3 is vertically fixed on the shaft of the smooth section of the core rod 1 along the axial direction of the core rod 1; the remaining sides of the guide plate 3 are away from the side of the helical blade 2, and the direction from the helical section of the core rod 1 to the smooth section faces The direction close to the central axis of the core rod 1 is inclined. The maximum distance in the vertical distance between each of the side edges of the guide plate 3 away from the core rod 1 and the central axis of the core rod 1 is not greater than the distance between the outer edge of the helical blade 2 and the central axis of the core rod 1. vertical distance.

When constructing extruded cast-in-place piles in the stratum, the helical section on the core rod 1 provided with the helical blade 2 will be drilled into the ground first. The screw blade 2 facilitates the drilling of the drill rod into the ground. The maximum distance between the vertical distances from the central axis of the mandrel 1 and the vertical distance between the outer edges of the helical blades 2 and the central axis of the mandrel , the guide plate 3 will not hinder the drilling process of the helical blade 2 . The side of the guide plate 3 away from the helical blade 2 is inclined from the helical section of the core rod 1 to the smooth section toward the direction close to the central axis of the core rod 1. When the core rod 1 is pulled out from the ground, more drill rods will be added. The pressure on the soil, which in turn reduces the resistance between the drill pipe and the soil. Therefore, when the drill pipe is pulled up, even if the soil rebounds and sticks to the smooth section of the core rod 1, the guide plate 3 will increase the pressure of the drill pipe on the soil, and the drill pipe is easy to be pulled out from the soil. .

In addition, the guide plate 3 can also support the soil when the soil rebounds and sticks to the shaft of the smooth section of the core rod 1, so as to prevent the soil from sticking to the shaft of the smooth section of the core rod 1 in a large area. Thus, the resistance between the drill pipe and the soil body can be reduced, and it is convenient to pull the drill pipe up.

Compared with the prior art, the drill pipe provided in this embodiment can use the guide plate 3 to increase the pressure of the drill pipe on the soil during the process of pulling the drill pipe up, thereby reducing the resistance between the drill pipe and the soil. It is convenient to pull out the drill pipe from the soil.

It can be seen that the drill pipe provided in this embodiment alleviates the problem that the soil will rebound and stick after the drill pipe in the short auger drilling tool is drilled into the ground when the soil is squeezed into the cast-in-place pile in the stratum that is prone to collapse in the prior art. The rod body that is not provided with the helical blade on the drill rod forms a strong resistance, and when the drill rod is pulled up, it will cause a technical problem that greatly hinders the process of pulling out the drill rod.

Among them, when the drill pipe is pulled up, the drill pipe can be pulled out while driving the rotation of the drill pipe. Since the guide plate 3 can increase the pressure between the drill pipe and the soil, thereby reducing the resistance between the drill pipe and the soil, Therefore, in the process of rotating and pulling up the drill pipe, the guide plate 3 can reduce the torque required in the process of pulling up the drill pipe, which can not only protect the drill pipe, but also reduce energy consumption.

Since the guide plate 3 can reduce the resistance between the drill pipe and the soil body, the drill pipe can also be directly pulled out from the soil body in the process of pulling up the latter part of the drill pipe. The drill pipe is directly pulled out from the soil, and the part of the pile formed in the stratum near the ground is a smooth straight rod, and the part of the pile near the ground is a smooth straight rod, which can improve the bearing capacity of the pile. Therefore, the drill pipe provided in this embodiment can also be used to construct a smooth straight rod-shaped pile near the ground.

As shown in Figures 1 and 2, the guide plate 3 is a triangular plate. Among the three vertices of the guide plate 3, the vertical distance between the vertex away from the core rod 1 and the central axis of the core rod 1 is equal to the outer edge of the helical blade 2 to the core The vertical distance between the central axes of rod 1.

Among the three vertices of the guide plate 3, the vertical distance between the vertex away from the core rod 1 and the central axis of the core rod 1 is equal to the vertical distance between the outer edge of the helical blade 2 and the central axis of the core rod 1, which can make the guide plate 3 not. While affecting the working process of the helical blade 2, the guide plate 3 can maximize the effect of enhancing the pressure between the drill pipe and the soil.

Further, among the three sides of the guide plate 3, the length of the side fixed on the smooth section of the core rod 1 and the length of the side away from the helical blade 2 are greater than the length of the other side.

The length of the side of the guide plate 3 fixed on the smooth section of the core rod 1 and the length of the side away from the helical blade 2 are greater than the length of the other side, so that the guide plate 3 can be used to strengthen the drill pipe and the soil. The side of the pressure between the bodies is long enough, which can not only guide the drill pipe for the process of pulling out the drill pipe, but also enhance the effect of the guide plate 3 to enhance the pressure between the drill pipe and the soil body.

As shown in FIG. 1 and FIG. 2 , the guide plate 3 is an obtuse-angled triangular plate. Among the three vertices of the guide plate 3 , the vertex corresponding to the maximum inner angle of the guide plate 3 is the vertex away from the core rod 1 .

The guide plate 3 is an obtuse-angled triangular plate, which can not only increase the pressure between the drill pipe and the soil during the process of pulling out the drill pipe, but also prevent the guide plate 3 from hindering the drilling process of the drill pipe when the drill pipe is drilled into the ground.

As shown in FIG. 1 and FIG. 3 , there are a plurality of guide plates 3 , and the plurality of guide plates 3 are arranged on the shaft of the smooth section of the core rod 1 at intervals along the circumferential direction of the core rod 1 .

When there are multiple guide plates 3, the guide plates 3 can be lifted to enhance the pressure between the drill pipe and the soil, which further facilitates pulling the drill pipe out of the soil.

As shown in FIG. 3 , a plurality of guide plates 3 are fixed on the rod body of the smooth section of the core rod 1 at equal intervals along the circumferential direction of the core rod 1 .

A plurality of guide plates 3 are fixed on the smooth section of the core rod 1 at equal intervals along the circumference of the core rod 1, which can make the force between the drill rod and the soil more uniform, and the drill rod pulling process is more stable.

As shown in FIG. 2 , the drill pipe provided in this embodiment further includes a guide pipe 4 , the core rod 1 is hollow, and the guide pipe 4 is sleeved and fixed in the core rod 1 .

Wherein, the conduit 4 and the core rod 1 may be arranged concentrically, and the inside of the conduit 4 is used as a channel for entering concrete.

Further, the catheter 4 and the core rod 1 can be fixed together by the positioning ring 5. Specifically, the positioning ring 5 is sleeved and fixed on the catheter 4, and the core rod 1 is sleeved on the positioning ring 5 and positioned in hi. Ring 5 is fixedly connected.

The two ends of the core rod 1 in the drill rod provided in this embodiment may be respectively connected with the male joint 10 or the female joint 10 in the male and female type joints 10 , and the other components in the drilling tool or the other core rods 1 are also connected with The male joint 10 or the female joint 10 in the male and female joints 10, the male joint 10 and the female joint 10 are detachably connected, and the male and female joints 10 are convenient for connecting the core rod 1 with the rest of the drilling tool or the remaining core rods 1 connected together.

The male joint 10 and the female joint 10 in the male and female joints 10 are both hollow, and the inner wall of the hollow position of the male joint 10 and the inner wall of the hollow position of the female joint 10 are both hexagonal or octagonal.

As shown in FIG. 1 , the outer edge of the helical blade 2 is toothed.

The outer edge of the helical blade 2 is tooth-shaped, which can increase the pressure between the helical blade 2 and the soil, reduce the frictional force between the helical blade 2 and the soil, and facilitate the drilling of the helical blade 2 into the soil.

As shown in FIG. 1 , the side of the guide plate 3 facing away from the helical blade 2 is toothed.

The side of the guide plate 3 away from the helical blade 2 is toothed, which can increase the pressure between the guide plate 3 and the soil during the process of pulling the drill pipe up, and cut the soil at the same time, which can further reduce the pressure when the drill pipe is pulled out. The resistance between the drill pipe and the soil further improves the ease of pulling out the drill pipe.

Embodiment 2:

The drilling tool provided in this embodiment includes the drill pipe in the first embodiment. The drilling tool may further include a power device for driving the drill pipe to move axially and a power device for driving the drill pipe to rotate, both of which are connected to the drill pipe. The drilling tool may further include a conical drill bit, which is communicated with one end of the drill rod close to the helical blade.

Since the drilling tool provided in this embodiment includes the drill rod in Embodiment 1, the drilling tool provided in this embodiment and the drill rod in Embodiment 1 can solve the same technical problem and achieve the same technical effect. The drilling tool provided in this embodiment also alleviates the existing problem in the prior art that when the soil squeezed cast-in-place pile is constructed in the stratum that is easy to collapse holes, after the drill pipe in the short auger drilling tool is drilled into the ground, the soil will rebound and stick to the drill pipe. The rod body is not provided with spiral blades, thus forming a strong resistance, which will greatly hinder the process of pulling out the drill rod when the drill rod is pulled up.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (10)

1. A drill rod is characterized by comprising a core rod, a helical blade and a guide plate;

the core rod comprises a spiral section and a smooth section, the body of the spiral section of the core rod is provided with the spiral blade, and the spiral blade spirally extends along the axial direction of the core rod;

the guide plate is vertically fixed on the rod body of the smooth section of the core rod along the axial direction of the core rod; the side edge of the rest side edges of the guide plate, which is far away from the spiral blade, inclines towards the direction close to the central axis of the core rod from the spiral section to the smooth section of the core rod;

the maximum distance in the vertical distance between each position on the side edge of the guide plate, which is far away from the core bar, and the central axis of the core bar is not larger than the vertical distance between the outer edge of the spiral blade and the central axis of the core bar.

2. The drill rod of claim 1, wherein the guide plate is a triangular plate, and a vertical distance between a vertex of the guide plate, which is far away from the mandrel, and the mandrel central axis is equal to a vertical distance between an outer edge of the helical blade and the mandrel central axis.

3. The drill rod of claim 2, wherein the length of the side of the guide plate fixed on the smooth shank of the core rod, and the length of the side facing away from the helical blade, of the three sides are greater than the length of the other side.

4. The drill rod of claim 3, wherein the guide plate is an obtuse triangular plate, and of the three apexes of the guide plate, the apex corresponding to the largest interior angle of the guide plate is the apex distal from the core rod.

5. The drill rod as claimed in claim 1, wherein the guide plate is a plurality of guide plates, and the plurality of guide plates are arranged on the rod body of the smooth section of the core rod at intervals along the circumferential direction of the core rod.

6. The drill rod of claim 5, wherein a plurality of the guide plates are fixed on the rod body of the smooth section of the core rod at equal intervals along the circumference of the core rod.

7. The drill rod of claim 1, further comprising a guide tube, wherein the core rod is hollow, and the guide tube is sleeved and fixed in the core rod.

8. The drill rod of claim 1, wherein the outer edge of the helical blade is toothed.

9. Drill rod according to any one of claims 1-8, characterized in that the side of the guide plate facing away from the helical blade is toothed.

10. Drilling tool, characterized in that it comprises a drill rod according to any of claims 1-9.

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