Novel anti-blocking drill bit for rock-soil drilling

Abstract

The utility model relates to the technical field of drill bits of rock-soil drilling machines, and discloses a novel anti-blocking drill bit for rock-soil drilling, which comprises a drill bit main body, a connecting pipe sleeve is arranged on the upper surface of the drill bit main body, an anti-blocking component is arranged on the outer wall of the connecting pipe sleeve, and a flushing component is arranged on the inner wall of the drill bit main body. The anti-blocking assembly comprises a slag discharging groove, the slag discharging groove is formed in the outer wall of the connecting pipe sleeve, cutting teeth are fixedly connected to the lower surface of the drill bit body, groove edges are arranged on the outer wall of the slag discharging groove, and the section of the slag discharging groove is rectangular. The flushing assembly comprises a water channel, the water channel is arranged in the drill bit body, and the inner wall of the connecting pipe sleeve is in a thread shape. And the connecting pipe sleeve is communicated with the water channel and is used for flushing the water channel during drilling and slag removal. According to the utility model, the blocking risk is reduced, the drilling is smoother, the operation interruption caused by blocking is reduced, the drilling continuity is ensured, the working efficiency is improved, the cost is effectively reduced, the construction period is shortened, and the overall benefit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock and soil drilling machine drill bits, in particular to a novel anti-blocking drill bit for rock and soil drilling. Background Art

[0002] In the field of geotechnical engineering, drilling operations are extremely common and critical basic operations, and their operation results directly affect the smooth progress of subsequent projects. Whether it is geological exploration, building foundation construction, or drilling operations in energy extraction, high-performance drilling equipment is indispensable. With the continuous expansion of the scale of various projects and the increasing complexity of the construction environment, the requirements for drilling efficiency, stability and safety are also increasing. The development of new geotechnical drilling drill bits has become an urgent need for the development of the industry.

[0003] At present, traditional geotechnical drilling bits mostly adopt a relatively simple one-piece design in terms of mechanical structure, which is mainly composed of a single drill head and a part for connecting the drill rod. Its technical principle is to rely on the torque transmitted by the drill rod to drive the drill bit to rotate, and use the cutting edges distributed on the drill bit to directly cut and crush the rock and soil. In terms of slag removal, it usually only relies on the gaps naturally formed during the drilling process, allowing the rock slag to fall freely under the action of gravity or be randomly distributed in the borehole, lacking an active and effective slag removal mechanism.

[0004] However, this traditional geotechnical drilling drill bit has exposed some problems during actual operation. Due to the lack of reasonable rock removal design, during the drilling process, the cut rock debris is very likely to accumulate in large quantities in key parts of the borehole and the drill bit, such as around the cutting edge of the drill bit and the transition area where the drill bit is connected to the drill rod. Once the rock debris accumulates to a certain extent, it will tightly jam the drill bit, making it difficult for the drill bit to rotate normally, and the drilling operation is forced to be interrupted. At this time, the construction workers have to stop their work and spend a lot of time and manpower using special tools to clean up the accumulated rock debris before the drill bit can resume normal operation. This slows down the drilling progress, significantly extends the project cycle, increases labor costs and equipment losses, and affects the overall benefits of the project. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a new anti-blocking drill bit for rock and soil drilling, aiming to improve the problem that in traditional rock and soil drilling, rock debris is easily accumulated in key positions of the drill hole and the drill bit, causing the drill bit to be stuck, and construction workers need to spend a lot of time and manpower to clean it, slowing down the drilling progress.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of anti-blocking drill bit for rock drilling, comprising a drill bit body, a connecting sleeve is arranged on the upper surface of the drill bit body, an anti-blocking component is arranged on the outer wall of the connecting sleeve, and a flushing component is arranged on the inner wall of the drill bit body;

[0007] The anti-blocking component includes a slag discharge groove, which is arranged on the outer wall of the connecting pipe sleeve. Cutting teeth are fixedly connected to the lower surface of the drill body. The outer wall of the slag discharge groove is provided with a groove edge, and the cross-section of the slag discharge groove is rectangular.

[0008] Furthermore, the flushing assembly includes a water channel, which is arranged inside the drill bit body, and the inner wall of the connecting sleeve is in a threaded shape.

[0009] Furthermore, the connecting pipe sleeve is in communication with a water channel and is used for drilling and mucking water flushing channels.

[0010] Furthermore, the slag removal groove and the groove edge can form a continuous chip removal channel when cutting the rock slag on the hole wall, and the slag removal groove is forced to drive the deposited rock slag to be discharged in the reverse direction through the spiral configuration.

[0011] Furthermore, the threads inside the connecting sleeve are used for connection with an existing drill pipe.

[0012] Furthermore, the drill bit body can be used alone or forged integrally with the drill rod.

[0013] Furthermore, when the drill bit body rotates, it can cooperate with the slag removal groove and the groove edge to achieve secondary cutting.

[0014] Furthermore, the cross-section of the slag removal groove is rectangular, and extends from the end face of the connecting pipe sleeve in a counterclockwise spiral manner along the axial direction, and the groove edge of the slag removal groove is subjected to a tooling heat treatment.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the drill bit body rotates, the cutting teeth cut rock and soil, the slag groove and the groove edge cooperate to cut the rock slag on the hole wall, spiral slag is discharged, and the groove edge with blades realizes secondary crushing of rock slag, which solves the problem that in traditional rock and soil drilling, rock slag is easily accumulated in the key parts of the drill hole and the drill bit, causing the drill bit to be blocked, and the construction personnel need to spend a lot of time and manpower to clean it, which slows down the drilling progress. It reduces the risk of blockage, makes drilling smoother, reduces operation interruptions caused by blockage, ensures continuous drilling, improves work efficiency, effectively reduces costs, shortens construction period, and improves overall benefits.

[0017] 2. In the utility model, the connecting sleeve is connected to the drill rod through a thread, and water flows into the waterway through it and flows out from the drill bit body to wash the rock debris and reduce the temperature of the drill bit, thereby achieving auxiliary debris removal and reducing rock debris accumulation. At the same time, the water flow takes away the heat generated by the drill bit, reduces the drill bit temperature, and thus extends the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a three-dimensional structural schematic diagram of a new type of anti-blocking drill bit for rock and soil drilling proposed by the utility model;

[0019] Figure 2 This is a schematic structural diagram of the cutting teeth portion of a new type of anti-blocking drill bit for rock and soil drilling proposed by the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the structure of a connecting pipe sleeve part of a new type of anti-blocking drill bit for rock and soil drilling.

[0021] Legend:

[0022] 1. Drill bit body; 2. Cutting teeth; 3. Connecting sleeve; 4. Waterway; 5. Mud discharge trough; 6. Trench edge. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3 The utility model provides an embodiment: a new anti-blocking drill bit for rock drilling, comprising a drill bit body 1, a connecting sleeve 3 is arranged on the upper surface of the drill bit body 1, an anti-blocking component is arranged on the outer wall of the connecting sleeve 3 to prevent blockage, and a flushing component is arranged on the inner wall of the drill bit body 1 to flush the drill bit body 1;

[0025] The anti-blocking component includes a slag discharge groove 5, which is arranged on the outer wall of the connecting pipe sleeve 3. A plurality of cutting teeth 2 are arranged at one end of the drill body 1, and the cutting teeth 2 are fixedly connected to the lower surface. A groove edge 6 is arranged on the outer wall of the slag discharge groove 5, and the cross-section of the slag discharge groove 5 is rectangular.

[0026] Specifically, after the rock drilling operation is started, the drill bit body 1 begins to rotate, and the rock and soil are cut by means of a number of cutting teeth 2 distributed thereon. At the same time, the slag groove 5 and the groove edge 6 on the outer wall of the connecting pipe sleeve 3 work together. The slag groove 5 and the groove edge 6 cut the rock chips on the hole wall under the rotation of the drill bit body 1, and gradually form a continuous chip removal channel. Because of its spiral configuration, it can force the deposited rock chips to be discharged in the reverse direction. The slag groove 5 extends from the end face of the connecting pipe sleeve 3 in a counterclockwise spiral manner along the axial direction, and the groove edge 6 has been heat-treated by cutting tools, and cooperates with the drill bit body 1 to achieve secondary cutting during rotation. The cutting teeth 2 cut the rock mass, and the cut rock chips are carried backward by the flushing water flowing out of the waterway 4. The rock chips can be discharged outward by the flushing water through the space between the outer wall of the connecting pipe sleeve 3 and the inner wall of the drilled hole.

[0027] Reference Figure 1-Figure 3 The flushing component includes a water channel 4 and a plurality of slag discharge grooves 5 arranged outside the connecting sleeve 3. The water channel 4 is arranged inside the drill bit body 1. The inner wall of the connecting sleeve 3 is in a threaded shape. The connecting sleeve 3 is communicated with the water channel 4 and is used for drilling and slag flushing water channels. The slag discharge grooves 5 and the groove edges 6 can form a continuous chip discharge channel when cutting the rock slag on the hole wall. The slag discharge grooves 5 force the sedimentary rock slag to be discharged in the reverse direction through the spiral configuration. The threads inside the connecting sleeve 3 are used to be connected with the existing drill pipe. The drill bit body 1 can be used alone or forged with the drill pipe. When the drill bit body 1 rotates, it can cooperate with the slag discharge grooves 5 and the groove edges 6 to achieve secondary cutting. The cross-section of the slag discharge groove 5 is rectangular and extends from the end face of the connecting sleeve 3 in a counterclockwise spiral manner along the axial direction. The groove edges 6 of the slag discharge groove 5 are subjected to tooling heat treatment.

[0028] Specifically, the interior of the connecting sleeve 3 is threaded, which is convenient for connection with the existing drill rod. The connecting sleeve 3 is connected to the water channel 4 inside the drill bit body 1, forming a drilling mucking water channel. When the drill rod is connected and water is passed, the water flows along the drill rod through the connecting sleeve 3 into the water channel 4, and finally flows out from the drill bit body 1.

[0029] Working principle: When a new type of anti-blocking drill bit for rock and soil drilling is needed, during the rock and soil drilling operation, the drill bit body 1 rotates and cuts the rock and soil by cutting teeth 2, and there are several cutting teeth 2. At this time, the slag groove 5 plays a role. The slag groove 5 and the groove edge 6 cooperate to cut the rock slag on the hole wall during the rotation of the drill bit body 1 to form a continuous chip removal channel. The slag groove 5 is in a spiral configuration and can force the sedimentary rock slag to be discharged in the reverse direction. Since the cross-section of the slag groove 5 is rectangular and extends from the end face of the connecting pipe sleeve 3 in a counterclockwise spiral manner along the axial direction, and the groove edge 6 has been heat-treated with a blade, it can cooperate with the drill bit body 1 to achieve secondary cutting during rotation, further crushing the rock slag and effectively preventing blockage;

[0030] In addition, the interior of the connecting sleeve 3 is threaded and can be connected to an existing drill rod. The connecting sleeve 3 is communicated with a water channel 4 arranged inside the drill bit body 1, forming a drilling mucking water channel. When connected to the drill rod and water is passed through, water flows from the drill rod through the connecting sleeve 3 into the water channel 4, and then flows out from the drill bit body 1 to flush the rock mucking generated during the drilling process and assist in mucking removal. At the same time, it can also reduce the temperature of the drill bit during operation, extend the service life of the drill bit, and further cooperate with the anti-blocking component to ensure the smooth progress of the drilling operation.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel anti-blocking drill bit for rock drilling, comprising a drill bit body (1), characterized in that: The upper surface of the drill body (1) is provided with a connecting sleeve (3), the outer wall of the connecting sleeve (3) is provided with an anti-blocking component, and the inner wall of the drill body (1) is provided with a flushing component; The anti-blocking component comprises a slag discharge groove (5), the slag discharge groove (5) is arranged on the outer wall of the connecting pipe sleeve (3), a cutting tooth (2) is fixedly connected to the lower surface of the drill bit body (1), a groove edge (6) is arranged on the outer wall of the slag discharge groove (5), and the cross-section of the slag discharge groove (5) is rectangular.

2. A new type of anti-blocking drill bit for rock drilling according to claim 1, characterized in that: The flushing assembly comprises a water channel (4), the water channel (4) being arranged inside the drill bit body (1), and the inner wall of the connecting pipe sleeve (3) being in a threaded shape.

3. The novel anti-blocking drill bit for rock drilling according to claim 1, characterized in that: The connecting pipe sleeve (3) is in communication with the water channel (4) and is used for drilling and mucking water flushing channels.

4. The novel anti-blocking drill bit for rock drilling according to claim 1, characterized in that: The slag removal groove (5) and the groove edge (6) can form a continuous chip removal channel when cutting rock slag on the hole wall. The slag removal groove (5) is configured to force the deposited rock slag to be discharged in the reverse direction through a spiral configuration.

5. The novel anti-blocking drill bit for rock drilling according to claim 2, characterized in that: The internal thread of the connecting sleeve (3) is used for connection with an existing drill pipe.

6. The novel anti-blocking drill bit for rock drilling according to claim 1, characterized in that: The drill bit body (1) can be used alone or forged integrally with a drill rod.

7. The novel anti-blocking drill bit for rock drilling according to claim 1, characterized in that: When the drill bit body (1) rotates, it can cooperate with the slag removal groove (5) and the groove edge (6) to achieve secondary cutting.

8. The novel anti-blocking drill bit for rock drilling according to claim 1, characterized in that: The slag removal groove (5) has a rectangular cross section and extends from the end surface of the connecting pipe sleeve (3) in a counterclockwise spiral manner along the axial direction. The groove edge (6) of the slag removal groove (5) is subjected to a tooling heat treatment.

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