Drilling bit for engineering geology

Abstract

The utility model discloses a drilling bit for engineering geology, which relates to the technical field of drilling tools and comprises a steel sleeve and a mounting sleeve, a threaded column is arranged at the top end of the steel sleeve, and a drill bit is fixedly connected to the bottom end of the steel sleeve; a connecting sleeve capable of being in threaded connection with the threaded column is arranged at the bottom end of the mounting sleeve, an open groove is formed in the mounting sleeve, a mounting disc is arranged in the open groove, a plurality of elastic pieces are evenly arranged at the bottom of the mounting disc, and wedge-shaped inclined blocks are fixedly arranged at the ends of the elastic pieces. The wedge-shaped inclined block can extend into the fixing groove under the elastic force effect of the elastic piece, and the wedge-shaped inclined block can abut against the inner wall face of the fixing groove. According to the engineering geological drilling bit, the installation efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to an engineering geological drilling bit. Background Art

[0002] Engineering geological drilling is an important method to obtain accurate geological data underground. By drilling boreholes and taking undisturbed soil samples, current engineering geological drilling refers to the means of using mechanical equipment or tools to drill holes in rock formations and taking rock cores to understand geological conditions, simply referred to as drilling. During the process of engineering geological drilling, a drill bit is required to drill holes and take samples.

[0003] At present, for an engineering geological drilling bit, for example, a replaceable engineering geological drilling bit disclosed in patent CN219034644U includes a steel body with a hollow cylinder structure. A fixing ring is fixedly connected to the top of the steel body. A plurality of limiting blocks are evenly spaced on the surface of the fixing ring. An installation sleeve is arranged on the surface of the fixing ring. Installation fixing grooves corresponding to the limiting blocks are arranged on the inner wall of the installation sleeve. Installation threads are arranged on the surface of the installation sleeve. The utility model relates to the technical field of exploration. For this replaceable engineering geological drilling bit, installation threads are arranged on the surface of the installation sleeve, which can be connected to a traditional drill pipe, so it does not affect the normal use of the traditional drill pipe. By arranging a fixing ring on the top of the steel body and arranging limiting blocks on the surface of the fixing ring that are adapted to the installation fixing grooves, the fixation of the drill bit can be achieved by fitting the limiting blocks into the installation fixing grooves. The stability of the steel body is further improved by using limiting bolts, avoiding the separation of the limiting blocks from the installation fixing grooves during the drilling process.

[0004] The existing engineering geological drilling bit is installed through threaded connection with the installation sleeve, and then the steel body of the drill bit is laterally limited by a limiting bolt. Although it can avoid the risk of loosening and falling off when the drill bit is reversely screwed out from the geological soil, in the actual use process, the drill bit needs to be installed first, and then the steel sleeve of the drill bit is laterally limited by the limiting bolt. The operation steps and time are more cumbersome and time-consuming compared with the direct installation method, and the limiting bolt is easy to be lost during disassembly and assembly and is inconvenient to carry. Therefore, it is urgent to improve the technology of the structure of the engineering geological drilling bit to improve this equipment. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an engineering geological drilling bit to solve the above problems existing in the prior art and improve the installation efficiency.

[0006] To achieve the above purpose, the utility model provides the following solution:

[0007] The utility model provides an engineering geological drilling bit, which comprises a steel sleeve and an installation sleeve. The top end of the steel sleeve has a threaded column, and the bottom end is fixedly connected with a drill bit. The bottom end of the installation sleeve has a connecting sleeve capable of being threadedly connected with the threaded column. An opening groove is formed inside the installation sleeve, and an installation disc is arranged in the opening groove. A plurality of elastic members are evenly arranged at the bottom of the installation disc. A wedge-shaped inclined block is fixedly arranged at the end of the elastic member. A plurality of fixing grooves are correspondingly formed at the top of the threaded column. The wedge-shaped inclined block can extend into the fixing grooves under the elastic force of the elastic member, and the wedge-shaped inclined block can abut against the inner wall surface of the fixing grooves.

[0008] Preferably, the elastic member is a spring. A spring groove is formed at the bottom of the installation disc. One end of the spring is fixed in the spring groove, and the other end is fixedly connected with the wedge-shaped inclined block.

[0009] Preferably, a guide rod groove coaxial with the spring groove is formed at the bottom of the installation disc. A guide rod is slidably connected in the guide rod groove. The guide rod can pass through the spring and is fixedly connected with the wedge-shaped inclined block.

[0010] Preferably, the bottom surface of the wedge-shaped inclined block is a curved surface, and the height of the curved surface gradually increases along the clockwise rotation direction of the threaded column.

[0011] Preferably, a chute is formed in the installation sleeve in the vertical direction. A slider is arranged on the installation disc. The slider is slidably connected in the chute. An adjusting structure can adjust and lock the position of the installation disc.

[0012] Preferably, the adjusting structure includes a moving block fixedly arranged at the top of the installation disc and a motor fixedly arranged on the installation sleeve and drivingly connected with the moving block. The motor can drive the moving block to reciprocate up and down.

[0013] Preferably, a moving block groove is formed in the installation sleeve. The moving block is slidably connected in the moving block groove. A threaded groove is formed in the moving block in the vertical direction. The output end of the motor is coaxially fixedly connected with a threaded rod, and the threaded rod is threadedly connected in the threaded groove.

[0014] Preferably, the cross-sectional profile of the inner wall of the moving block groove and the cross-sectional profile of the outer wall of the moving block are both rectangular.

[0015] Preferably, polishing layers are arranged on the inner wall of the moving block groove and the outer wall of the moving block.

[0016] The utility model has achieved the following technical effects compared with the prior art:

[0017] The engineering geological drilling bit provided by the present utility model can directly install the bit through the threaded connection between the steel sleeve and the installation sleeve. When the threaded column rotates clockwise to a position close to the wedge-shaped inclined block, the top end of the threaded column abuts against the wedge-shaped inclined block. As the threaded column rotates clockwise, the wedge-shaped inclined block can be extruded towards the installation disc under the elastic force of the elastic member. When the fixing groove at the top end of the threaded column is aligned with the wedge-shaped inclined block, the wedge-shaped inclined block snaps into the fixing groove. When the bit has a tendency to rotate counterclockwise due to external frictional force, the threaded column rotates counterclockwise and the inner wall of its fixing groove abuts against the side end of the vertical side of the wedge-shaped inclined block. Therefore, it can avoid the detachment of the bit caused by the reverse rotation of the threaded column. The installation operation of the device is simple, only need to turn the bit, which greatly improves the installation convenience and installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of the engineering geological drilling bit provided by the present utility model;

[0020] Figure 2 is a sectional view of the engineering geological drilling bit provided by the present utility model;

[0021] Figure 3 is Figure 2 a partial structural schematic diagram of part A in

[0022] Figure 4 is a schematic structural diagram of the installation disc provided by the present utility model;

[0023] In the figure: 1-bit; 2-steel sleeve; 3-installation sleeve; 4-connecting sleeve; 5-threaded column; 6-opening groove; 7-installation disc; 8-slider; 9-sliding groove; 10-spring groove; 11-spring; 12-wedge-shaped inclined block; 13-guide rod groove; 14-guide rod; 15-moving block groove; 16-moving block; 17-threaded groove; 18-threaded rod; 19-motor; 20-fixing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] The purpose of the present invention is to provide an engineering geological drilling bit to solve the problems existing in the prior art and improve the installation efficiency.

[0026] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The present invention provides an engineering geological drilling bit 1, as Figures 1 to 4 shown, which includes a steel sleeve 2 and an installation sleeve 3 provided at the top of the steel sleeve 2. The top end of the steel sleeve 2 has a threaded column 5, and the bottom end is fixedly connected to a drill bit 1; the bottom end of the installation sleeve 3 has a connection sleeve 4 that can be threadedly connected to the threaded column 5. The connection sleeve 4 is annular. An opening groove 6 is formed inside the installation sleeve 3 near the connection sleeve 4. An installation disk 7 is provided in the opening groove 6. The installation disk 7 is circular and coaxial with the threaded column 5. A plurality of elastic members are evenly arranged at the bottom of the installation disk 7. A wedge-shaped inclined block 12 is fixedly provided at the end of the elastic member. Preferably, six wedge-shaped inclined blocks 12 are provided, and the six wedge-shaped inclined blocks 12 are circularly distributed at the bottom of the installation disk 7. A plurality of fixing grooves 20 are provided at the top of the threaded column 5 corresponding to the wedge-shaped inclined blocks 12. Preferably, six fixing grooves 20 are provided. When the threaded column 5 is rotated clockwise and threadedly connected to the connection sleeve 4, the top end of the threaded column 5 can abut against the wedge-shaped inclined block 12. Since an elastic member is provided between the installation disk 7 and the wedge-shaped inclined block 12, the threaded column 5 can continuously squeeze the wedge-shaped inclined block 12 in the direction close to the installation disk 7. When the fixing groove 20 at the top end of the threaded column 5 is aligned with the wedge-shaped inclined block 12, the wedge-shaped inclined block 12 pops into the fixing groove 20 under the elastic force of the elastic member. When the drill bit 1 has a tendency to rotate counterclockwise under external force friction, the inner wall of the fixing groove 20 of the threaded column 5 rotates counterclockwise and abuts against the side end of the vertical side of the wedge-shaped inclined block 12, and the wedge-shaped inclined block 12 is used to limit the threaded column 5, so as to avoid the detachment of the drill bit 1 caused by the reverse rotation of the threaded column 5.

[0028] In some embodiments, the elastic member is a spring 11. A spring groove 10 is provided at the bottom of the installation disk 7. One end of the spring 11 is fixed to the inner top wall of the spring groove 10, and the other end is fixedly connected to the wedge-shaped inclined block 12. The spring groove 10 can limit the spring 11. At the same time, the spring groove 10 can be adapted to the outer shape of the wedge-shaped inclined block 12, so that the wedge-shaped inclined block 12 is slidably connected to the spring groove 10 to limit the wedge-shaped inclined block 12.

[0029] In some embodiments, the bottom of the mounting disk 7 is located above the spring groove 10, and a guide rod groove 13 coaxial with the spring groove 10 is provided. A guide rod 14 is slidably connected in the guide rod groove 13. The bottom end of the guide rod 14 can pass through the spring 11 and is fixedly connected to the wedge-shaped inclined block 12. By providing the guide rod and winding the spring 11 around the guide rod 14, it is possible to prevent the spring 11 from being overly twisted when the wedge-shaped inclined block 12 is stressed and the spring 11 is compressed, thus affecting the use effect.

[0030] In some embodiments, the bottom surface of the wedge-shaped inclined block 12 is a curved surface, and the height of the curved surface gradually increases along the clockwise rotation direction of the threaded column 5. By setting the bottom surface of the wedge-shaped inclined block 12 as a curved surface, the clockwise rotation of the threaded column 5 after abutting against the wedge-shaped inclined block 12 can be made smoother.

[0031] In some embodiments, a chute 9 is provided on the mounting sleeve 3 in the vertical direction. Sliders 8 are provided on both sides of the mounting disk 7, and the sliders 8 are slidably connected in the chute 9. An adjustment structure can adjust and lock the position of the mounting disk 7.

[0032] In some embodiments, the adjustment structure includes a moving block 16 fixedly provided on the top of the mounting disk 7 and a motor 19 embedded inside the mounting sleeve 3 and drivingly connected to the moving block 16. By turning on the motor 19, the moving block 16 can be driven to reciprocate up and down, further realizing the position adjustment of the mounting disk 7 to match the threaded columns 5 of different heights.

[0033] In some embodiments, a moving block groove 15 is provided on the mounting sleeve 3. The moving block 16 is slidably connected in the moving block groove 15. A threaded groove 17 is provided in the moving block 16 in the vertical direction. A threaded rod 18 is threadedly connected in the threaded groove 17. A double-thread is engraved on the outer wall of the threaded rod 18. The threaded rod 18 extends into the mounting sleeve 3 and forms a rotational connection with the mounting sleeve 3. The top end of the threaded rod 18 is coaxially and fixedly connected to the output end of the motor 19. The motor 19 can drive the threaded rod 18 to rotate, so that the moving block 16 reciprocates in the vertical direction, further driving the position of the mounting disk 7 to move.

[0034] In some embodiments, the cross-sectional profile of the inner wall of the moving block groove 15 and the cross-sectional profile of the outer wall of the moving block 16 are both rectangular, which can prevent the threaded rod 18 from driving the moving block 16 to rotate together when the motor 19 drives the threaded rod 18 to rotate.

[0035] In some embodiments, polishing layers are provided at the positions where the inner wall of the moving block groove 15 and the outer wall of the moving block 16 can come into contact with each other, for reducing the friction between the moving block groove 15 and the moving block 16, so that the moving block 16 moves more smoothly in the moving block groove 15.

[0036] The engineering geological drilling bit 1 provided by the present utility model, when using this device, first move the mounting plate 7 to a suitable position in advance through the adjustment structure, and then the bit 1 can be directly installed through the threaded connection formed between the connecting sleeve 4 and the threaded column 5. When the threaded column 5 rotates clockwise to a position close to the wedge-shaped inclined block 12, the top end of the threaded column 5 abuts against the wedge-shaped inclined block 12. As the threaded column 5 rotates clockwise, the wedge-shaped inclined block 12 can be squeezed into the spring groove 10. When the fixing groove 20 at the top end of the threaded column 5 is aligned with the wedge-shaped inclined block 12, the wedge-shaped inclined block 12 can bounce into the fixing groove 20 through the elastic connection formed with the spring 11. When the bit 1 has a tendency to rotate counterclockwise due to external force friction, the threaded column 5 rotates counterclockwise and the inner wall of its fixing groove 20 abuts against the side end of the vertical side of the wedge-shaped inclined block 12, so that the detachment of the bit 1 caused by the reverse rotation of the threaded column 5 can be avoided; when the bit 1 needs to be disassembled, the motor 19 can be started to work, and the height of the mounting plate 7 can be readjusted through the adjustment structure, so that the wedge-shaped inclined block 12 is moved out of the fixing groove 20. At this time, by rotating the steel sleeve 2 counterclockwise, the bit 1 can be removed from the mounting sleeve 3. The operation is simple and convenient to use.

[0037] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation of the present utility model.

Claims

1. An engineering geological drilling drill bit, characterized in that: include: A steel sleeve, wherein the top end of the steel sleeve has a threaded column and the bottom end is fixedly connected to a drill bit; And a mounting sleeve, the bottom end of the mounting sleeve has a connecting sleeve that can be threadedly connected to the threaded column, an open groove is formed inside the mounting sleeve, a mounting plate is arranged in the open groove, a plurality of elastic members are evenly arranged on the bottom of the mounting plate, a wedge-shaped bevel block is fixedly arranged on the end of the elastic member, a plurality of fixing grooves are correspondingly opened on the top of the threaded column, the wedge-shaped bevel block can extend into the fixing groove under the elastic force of the elastic member, and the wedge-shaped bevel block can abut against the inner wall surface of the fixing groove.

2. The engineering geological drilling drill bit according to claim 1, characterized in that: The elastic member is a spring, a spring groove is provided at the bottom of the mounting plate, one end of the spring is fixed in the spring groove, and the other end is fixedly connected to the wedge-shaped inclined block.

3. The engineering geological drilling drill bit according to claim 2, characterized in that: A guide rod groove coaxial with the spring groove is provided at the bottom of the mounting plate, a guide rod is slidably connected in the guide rod groove, and the guide rod can pass through the spring and be fixedly connected to the wedge-shaped inclined block.

4. The engineering geological drilling drill bit according to claim 1, characterized in that: The bottom surface of the wedge-shaped inclined block is a curved surface, and the height of the curved surface gradually increases along the clockwise rotation direction of the threaded column.

5. The engineering geological drilling drill bit according to claim 1, characterized in that: A slide groove is provided on the installation sleeve along the vertical direction, and a slider is provided on the installation plate. The slider is slidably connected in the slide groove, and an adjustment structure can adjust and lock the position of the installation plate.

6. The engineering geological drilling drill bit according to claim 5, characterized in that: The adjusting structure comprises a moving block fixedly arranged on the top of the mounting plate and a motor fixedly arranged on the mounting sleeve and transmission-connected to the moving block, wherein the motor can drive the moving block to reciprocate up and down.

7. The engineering geological drilling drill bit according to claim 6, characterized in that: A moving block groove is provided on the mounting sleeve, the moving block is slidably connected in the moving block groove, a threaded groove is provided inside the moving block along the vertical direction, a threaded rod is coaxially fixedly connected to the output end of the motor, and the threaded rod is threadedly connected in the threaded groove.

8. The engineering geological drilling drill bit according to claim 7, characterized in that: The cross-sectional profile of the inner wall of the moving block groove and the cross-sectional profile of the outer wall of the moving block are both rectangular.

9. The engineering geological drilling drill bit according to claim 7, characterized in that: A polishing layer is provided on the inner wall of the moving block groove and the outer wall of the moving block.

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