Highway engineering block gravel accumulation body slope protection hole forming device

Abstract

The utility model belongs to the technical field of highway engineering, and discloses a highway engineering block gravel accumulation body slope protection hole forming device which comprises a drill bit, a drill rod, a reamer, a root canal and a pipe shoe, the drill bit drives the reamer to rotate together to conduct drilling, the pipe shoe is connected with the reamer in a matched mode, and along with downward drilling of the drill bit, the root canal and the pipe shoe form holes downwards. When a drilling machine stops blowing or a drill rod is replaced to suspend drilling, no gap exists between the concentric drill and the periphery of a hole during drilling and blowing stopping, and the situation that the drill bit is clamped by hole collapsing stones around the drill bit, the drill bit is clamped, the torque of the drill rod is too large, and the drill bit cannot be damaged due to the fact that the hole collapsing stones around the drill bit are damaged is avoided. Therefore, the hole forming speed is increased, the construction efficiency is improved, the construction consumption is reduced, and the construction cost can be greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway engineering, and in particular relates to a hole-forming device for protecting a side slope of a block and gravel accumulation body of a highway engineering project. Background Art

[0002] The purpose of highway slope protection is to ensure the safety and stability of the highway during construction and operation, to prevent dangerous situations such as landslides, collapses, and collapses on the slopes, and to ensure the safe construction and normal operation of the highway. High slope protection needs to consider the influence of factors such as geological conditions, hydrological conditions, slope height and failure mode. Before construction, different safety protection measures should be adopted according to the influencing factors to carry out the construction of protection projects, such as soil nail walls, anti-slide piles, etc., which can increase the strength and stability of the slope and reduce the risk of landslides or collapses.

[0003] The slope protection of the rubble accumulation body is to first drill a hole mechanically, insert the anchor bundle, anchor cable and grouting pipe into the hole at the same time, then inject cement slurry through the grouting pipe, wait for a certain period of time, construct the slope frame beam, then tension the anchor bundle and anchor cable, and finally construct the retaining wall. A prestressed anchor cable reinforced retaining wall can be formed to play a reinforcement role. The anchor cable reinforced retaining wall is widely used in severely weathered or easily weathered soft rocks, relatively broken excavation sections, and soil slopes that are easily eroded or have small collapses.

[0004] The traditional engineering practice is to use a bracket-type down-the-hole drill to drill holes, using an eccentric drill bit to drive the root canal into the bearing layer of the gravel slope according to the designed spacing. During this process, when the drilling rig stops or the drill rod is replaced and drilling is suspended, the drill will often get stuck in the collapsed rocks around the drill bit, which not only affects the drilling speed and hole-making efficiency, but also causes fractures at the connection between the drill bit and the drill rod, resulting in the scrapping of the drill bit, drill rod, and drill rod. In deeper holes, it is difficult to pull out the drill bit and drill rod, and it may even cause damage to related parts, increasing construction costs. Summary of the invention

[0005] The purpose of the utility model is to overcome the above-mentioned problems and provide a hole-making device for protecting the slope of a block and gravel accumulation body in a highway engineering project. During the drilling process, the drill bit and the reamer cooperate closely, and when the drill rig replaces the drill rod and installs the root canal, there is no gap between the drill bit and the block and gravel accumulation body, which greatly reduces the possibility of drill sticking, drill rod scrapping and difficulty in pulling out the drill rod, speeds up the hole-making speed and construction efficiency, and reduces construction consumption.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a hole-forming device for protecting the slope of a block and gravel accumulation body of a highway engineering project, comprising a drill bit, a drill bit sleeve provided with a reamer and a pipe shoe, the drill bit drives the reamer to rotate together for drilling, the reamer and the pipe shoe have a clearance fit, and the pipe shoe is connected to the root canal.

[0008] A further improvement of the utility model is that the drill bit comprises a drill bit blade, a drill bit ridge, a drill bit neck and a drill bit shank, one end of the drill bit shank is fixedly connected to the drill rod, the other end of the drill bit shank is connected to the drill bit neck, the drill bit neck is connected to the drill bit ridge, the drill bit ridge is connected to the drill bit blade, the drill bit ridge is provided with a reamer, and the drill bit neck is provided with a pipe shoe.

[0009] A further improvement of the utility model is that a bottom blade diamond is arranged on the drill bit ridge and the drill bit blade portion, a drill bit groove, a drill bit concave portion and a drill bit convex portion are arranged on the drill bit ridge, and the drill bit concave portion and the drill bit convex portion are symmetrically arranged.

[0010] A further improvement of the utility model is that bottom blade diamonds are fixedly arranged at the bottom ends of the drill bit and the reamer.

[0011] A further improvement of the utility model is that the reamer comprises a reamer boss, a carcass and a reamer recess, the reamer boss is arranged inside the carcass, the reamer recess is arranged on the top of the carcass, and the reamer boss engages with the drill groove to connect the drill bit and the reamer.

[0012] A further improvement of the utility model is that a top diamond is arranged on the top of the carcass, and a side diamond is arranged on the side edge of the top of the carcass.

[0013] A further improvement of the utility model is that the outer diameters of the drill groove and the drill recess are smaller than the inner diameter of the reamer boss, and the outer diameter of the drill projection is smaller than the inner diameter of the reamer recess.

[0014] A further improvement of the utility model is that the pipe shoe comprises a connector, a pipe shoe part and a main body, the connector is a threaded structure, and the pipe shoe part is sleeved on the drill neck and connected with the root canal thread.

[0015] A further improvement of the utility model is that the outer wall of the convex part of the drill neck is larger than the inner wall of the pipe shoe part.

[0016] A further improvement of the utility model is that the central axes of the drill bit, the reamer and the pipe shoe coincide with each other.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model drives the reamer to rotate together with the drill bit to perform drilling, and the pipe shoe is connected with the reamer. As the drill bit drills downward, the root canal and the pipe shoe follow downward to form a hole. When the drilling depth is reached, the connection between the drill bit and the reamer is unlocked by slightly rotating in the opposite direction. The utility model speeds up the hole forming speed and construction efficiency, reduces construction consumption, and can significantly reduce construction costs. In addition, the connection device of the utility model is simple to process, can be connected to different power machines, has strong applicability, and is easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a hole-forming device for protecting a slope of a block and gravel accumulation body in a highway engineering project according to the utility model;

[0020] Figure 2 It is a structural schematic diagram of the drill bit of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the reamer of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the pipe shoe of the utility model.

[0023] Among them, 1. drill bit; 11. drill bit blade; 12. drill bit ridge; 13. drill bit neck; 14. drill bit shank; 15. bottom blade diamond; 16. drill bit groove; 17. drill bit concave part; 18. drill bit convex part; 2. reamer; 21. reamer boss; 22. top blade diamond; 23. matrix; 24. side blade diamond; 25. reamer concave part; 3. pipe shoe; 31. connector; 32. pipe shoe part; 33. main body; 4. root canal; 5. drill rod. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to common technical knowledge and conventional means in the field, which should all be included in the protection scope of the present invention.

[0025] See also Figure 1-4The highway engineering block and gravel accumulation body slope protection hole forming device comprises a drill bit 1, a reamer 2, a pipe shoe 3, a root canal 4 and a drill rod 5, wherein the drill bit 1 comprises a drill bit blade 11, a drill bit ridge 12, a drill bit neck 13, a drill bit shank 14, a bottom blade diamond 15, a drill bit groove 16, a drill bit concave part 17 and a drill bit convex part 18, one end of the drill bit shank 14 is fixedly connected to the drill rod 5, and the drill rod 5 is connected to a power machine to provide power, The other end of the drill shank 14 is connected to the drill neck 13, the drill neck 13 is connected to the drill ridge 12, the drill ridge 12 is connected to the drill blade 11, the drill ridge 12 is provided with a reamer 2, the drill neck 13 is provided with a pipe shoe 3, a bottom blade diamond 15 is provided on the drill ridge and drill blade 11, a drill groove 16, a drill recess 17 and a drill protrusion 18 are provided on the drill ridge 12, and the drill recess 17 and the drill protrusion 18 are symmetrically arranged.

[0026] The reamer 2 includes a reamer boss 21, a top edge diamond 22, a matrix 23, a side edge diamond 24 and a reamer recess 25. The reamer boss 21 is arranged on the inner side of the matrix 23, and the reamer recess 25 and the top edge diamond 22 are arranged on the top of the matrix 23. The reamer boss 21 engages with the drill bit groove 16 to connect the drill bit 1 and the reamer 2. The drill bit 1 drives the reamer 2 to rotate together for drilling. The reamer 2 and the pipe shoe 3 are clearance-matched. The side edge of the top side of the matrix 23 is arranged, and the bottom ends of the drill bit 1 and the reamer 2 are fixedly provided with bottom edge diamonds 15.

[0027] The pipe shoe 3 includes a connector 31, a pipe shoe portion 32 and a main body 33. The connector 31 is a threaded structure. The pipe shoe portion 32 is sleeved on the drill neck 13 and is threadedly connected to the root canal 4. The central axes of the drill 1, the reamer 2 and the pipe shoe 3 coincide.

[0028] The outer wall of the convex part of the drill neck 13 is larger than the inner wall of the pipe shoe part 32 of the pipe shoe 3, the outer diameter of the drill recess 17 is smaller than the inner diameter of the reamer boss 21, the outer diameter of the drill convex part 18 is smaller than the inner diameter of the reamer recess 25, and the outer diameter of the drill groove 16 is smaller than the inner diameter of the reamer boss 21.

[0029] Working method: The drill bit 1 drives the reamer 2 to rotate together for drilling, and the gap between the pipe shoe 3 and the reamer 2 is matched. As the drill bit 1 drills down, the drill bit 1 and the reamer 2 will drill a hole diameter sufficient for the casing to enter, and the root tube 4 and the pipe shoe 3 follow downward to form a hole. The drill bit 1 and the reamer 2 rotate continuously during work, but the pipe shoe 3 and the root canal 4 do not rotate; when the drilling depth is reached, the connection between the drill bit 1 and the reamer 2 is unlocked by slightly reverse rotation, and the entire drill bit 1 and the connected drill rod 5 and other drilling tool systems will be taken out and recycled through the root canal 4, and the reamer 2 and the pipe shoe 3 will remain in the aperture for a long time. This method can speed up the hole-making speed and construction efficiency, reduce construction consumption, and greatly reduce construction costs. It is also simple to process and has strong applicability.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A hole-forming device for slope protection of block and gravel accumulation in highway engineering, characterized in that: The drill bit (1) comprises a drill (1), wherein the drill bit (1) is provided with a reamer (2) and a pipe shoe (3), the drill bit (1) drives the reamer (2) to rotate together for drilling, the reamer (2) and the pipe shoe (3) are clearance-matched, and the pipe shoe (3) is connected to the root canal (4); The drill bit (1) comprises a drill bit blade (11), a drill bit ridge (12), a drill bit neck (13) and a drill bit shank (14); a drill bit groove (16) is provided on the drill bit ridge (12); The reamer (2) comprises a reamer boss (21), a carcass (23) and a reamer recess (25), wherein the reamer boss (21) is arranged on the inner side of the carcass (23), and the reamer boss (21) engages with the drill bit recess (16) to connect the drill bit (1) and the reamer (2); A bottom diamond (15) is fixedly provided at the bottom ends of the drill bit (1) and the reamer (2).

2. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: One end of the drill shank (14) is fixedly connected to the drill rod (5), the other end of the drill shank (14) is connected to the drill neck (13), the drill neck (13) is connected to the drill spine (12), the drill spine (12) is connected to the drill blade (11), the drill spine (12) is sleeved with a reamer (2), and the drill neck (13) is sleeved with a pipe shoe (3).

3. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: A bottom blade diamond (15) is arranged on the drill bit blade portion (11), and a drill bit recess (17) and a drill bit protrusion (18) are also arranged on the drill bit ridge portion (12), wherein the drill bit recess (17) and the drill bit protrusion (18) are symmetrically arranged.

4. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: A reamer recess (25) is provided on the top of the carcass (23).

5. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: A top diamond (22) is arranged on the top of the matrix (23), and a side diamond (24) is arranged on the side edge of the top of the matrix (23).

6. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: The outer diameters of the drill groove (16) and the drill recess (17) are smaller than the inner diameter of the reamer boss (21), and the outer diameter of the drill convex part (18) is smaller than the inner diameter of the reamer recess (25).

7. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: The pipe shoe (3) comprises a connecting head (31), a pipe shoe portion (32) and a main body (33); the connecting head (31) is a threaded structure; the pipe shoe portion (32) is sleeved on the drill neck (13) and is threadedly connected to the root canal (4).

8. The hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1 is characterized in that: The outer wall of the convex portion of the drill neck (13) is larger than the inner wall of the pipe shoe portion (32).

9. A hole-forming device for slope protection of block and gravel accumulation bodies in highway engineering according to claim 1, characterized in that: The central axes of the drill bit (1), the reamer (2) and the pipe shoe (3) coincide with each other.

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