Anti-impact screw

Abstract

The utility model provides an anti-impact screw, which belongs to the technical field of well drilling equipment, and comprises a drill rod body and an anti-impact assembly, spiral blades are formed on the outer wall of the drill rod body, the drill rod body is used for drilling and hole forming, the drill rod body is provided with a front end and a rear end, the front end is used for drilling, and the rear end is used for being connected with a power output end of driving equipment; the anti-impact assembly is detachably connected to the front end of the drill rod body and used for making contact with a medium and crushing the medium, the anti-impact assembly drills into the medium to form a hole by means of the rotating torque of the drill rod body, and the outer diameter of the anti-impact assembly is larger than or equal to that of the drill rod body. The shock-resistant screw solves the technical problems that a spiral drill rod used in the prior art is poor in shock resistance, and the drill rod is prone to being damaged in the drilling process, and has the technical effects that the shock resistance of the drill rod can be improved, well drilling is easy, the drill rod is not damaged, and the drilling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling equipment, and more specifically relates to an impact-resistant screw rod. Background Art

[0002] The auger drill rod is a drilling tool commonly used in drilling. During drilling, the auger drill rod is rotated by a driving device (such as a driving motor) to implement drilling work. Usually, the impact resistance of the auger drill rod used in construction drilling is poor. When encountering harder rock formations, the drilling ability of the existing auger drill rod is weak, which can easily cause damage to the drill rod. In addition, when the existing drill rod is drilled into a harder rock formation, the drilling speed is slow and the drilling efficiency is low, which will affect the progress of the drilling work. Utility Model Content

[0003] The utility model aims to provide an impact-resistant screw rod, aiming to solve the technical problem that the spiral drill rod used in the prior art has poor impact resistance and is easy to cause damage to the drill rod during drilling.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an impact-resistant screw, comprising:

[0005] A drill rod body, the outer wall of which is formed with spiral blades, the drill rod body is used for drilling holes, the drill rod body has a front end and a rear end, the front end is used for drilling, and the rear end is used for connecting to the power output end of the driving device;

[0006] The impact-resistant component is detachably connected to the front end of the drill rod body and is used to contact and crush the medium. The impact-resistant component uses the rotational torque of the drill rod body to drill a hole into the medium. The outer diameter of the impact-resistant component is greater than or equal to the outer diameter of the drill rod body.

[0007] In a possible implementation, the impact-resistant component includes:

[0008] The conical tube is conical in shape and has a hollow cavity formed inside. The conical tube has an end with a larger outer diameter and an end with a smaller outer diameter. The end with the larger outer diameter is open and the end with the smaller outer diameter is closed. The end with the larger outer diameter is detachably connected to the front end of the drill rod body, and the end with the smaller outer diameter is used for drilling toward the medium.

[0009] A plurality of impact edges are plate-shaped and are connected to the outer wall of the conical cylinder. The plurality of impact edges are evenly distributed along the outer circumference of the conical cylinder and form a circular ring. The impact edges are used to drill into the medium.

[0010] In a possible implementation, the front end outer wall of the drill rod body is provided with an external thread, the inner wall of the end with a larger outer diameter of the tapered tube is provided with an internal thread, the internal thread and the external thread are matched and connected to each other, and the tapered tube is screwed to the front end of the drill rod body.

[0011] In one possible implementation, a shovel head is fixedly connected to the end of the impact edge away from the drill pipe body. The shovel head is a long strip member and has a triangular cross-section perpendicular to its length direction. The length direction of the shovel head is arranged along the end of the impact edge, and the shovel head is fixedly connected to the impact edge on one side close to the impact edge.

[0012] In a possible implementation, the plurality of impact edges are fixedly connected to each other at the end of the conical tube with a smaller outer diameter, and a pointed cone is provided at the position where the plurality of impact edges are connected to each other, and the pointed cone is provided in the axial direction of the conical tube.

[0013] In a possible implementation, the tapered barrel includes, from one end with a larger outer diameter to one end with a smaller outer diameter, a connecting portion, a transition portion, a tapered portion and a conical portion which are interconnected in sequence, the hollow cavity is formed inside the connecting portion and the transition portion, the connecting portion is used to connect the front end of the drill pipe body, and the impact edge is commonly arranged on the outer wall of the connecting portion, the outer wall of the transition portion, the outer wall of the tapered portion and the outer wall of the conical portion along the axial direction of the tapered barrel.

[0014] In a possible implementation, the drill pipe body includes:

[0015] The first rod body is hollow and has a first connecting portion at one end;

[0016] The second rod body is hollow and has a second connecting portion at one end. The second rod body is in the axial extension direction of the first rod body, the second connecting portion is detachably connected to the first connecting portion, and the distance between the end of the first rod body and the end of the second rod body can be adjusted.

[0017] In a possible implementation, the first connecting portion is a cylindrical stud, the impact-resistant component is arranged on an end of the first rod body away from the stud, the stud is coaxially arranged with the first rod body and in the axial extension direction of the first rod body, the second connecting portion is arranged in a cylindrical groove at the end of the second rod body, the stud and the groove are inserted into each other and the insertion depth can be adjusted.

[0018] In a possible implementation, a threaded structure is provided in the groove, and the threaded structure is threadedly connected to the stud. The first rod body or the second rod body is screwed to adjust the insertion depth of the stud in the groove to adjust the distance between the first rod body and the second rod body, and the first rod body and the second rod body can be fixed to each other.

[0019] In a possible implementation, the outer walls of the first rod body and the second rod body are provided with a plurality of wear-resistant components, the wear-resistant components are used to contact and frictionally contact the inner wall of the borehole as the first rod body and the second rod body rotate, and the plurality of wear-resistant components are spirally arranged along the axial direction of the first rod body or the second rod body.

[0020] The beneficial effect of an impact-resistant screw provided by the utility model is that: compared with the prior art, the impact-resistant screw of the utility model includes a drill rod body and an impact-resistant component, the outer wall of the drill rod body is formed with spiral blades, the drill rod body is used for drilling holes, the drill rod body has a front end and a rear end, the front end is used for drilling, and the rear end is used to connect the power output end of the driving device; the impact-resistant component is detachably connected to the front end of the drill rod body, and is used to contact the medium and crush the medium, and the impact-resistant component drills holes into the medium with the help of the rotational torque of the drill rod body, and the outer diameter of the impact-resistant component is greater than or equal to the outer diameter of the drill rod body, which solves the technical problem that the spiral drill rod used in the prior art has poor impact resistance and is easy to cause damage to the drill rod during drilling, and has the technical effect of improving the impact resistance of the drill rod, facilitating drilling without damaging the drill rod, and improving drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of an impact-resistant screw provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the drill rod body structure of an impact-resistant screw provided in an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the structure of an impact-resistant component of an impact-resistant screw provided in an embodiment of the utility model;

[0025] Figure 4 for Figure 3 Left view of the impact-resistant component in;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a shovel head of an impact-resistant screw provided in an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1. Drill rod body; 11. Spiral blade; 12. External thread; 13. First rod body; 14. Second rod body; 15. First connecting part; 16. Second connecting part; 17. Wear-resistant component;

[0029] 2. Impact-resistant component; 21. Conical cylinder; 211. Connecting portion; 212. Transition portion; 213. Conical portion; 214. Conical portion; 22. Impact edge; 23. Internal thread; 24. Shovel head; 25. Pointed cone; 26. Hollow cavity. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Please also read Figures 1 to 5 The impact-resistant screw provided by the utility model is now described. The impact-resistant screw comprises a drill rod body 1 and an impact-resistant assembly 2. The outer wall of the drill rod body 1 is formed with spiral blades 11. The drill rod body 1 is used for drilling holes. The drill rod body 1 has a front end ( Figure 1 The left end) and the back end ( Figure 1 The front end is used for drilling, and the rear end is used for connecting the power output end of the driving device; the impact-resistant component 2 is detachably connected to the front end of the drill pipe body 1, and is used to contact the medium and crush the medium. The impact-resistant component 2 uses the rotational torque of the drill pipe body 1 to drill a hole into the medium, and the outer diameter of the impact-resistant component 2 is greater than or equal to the outer diameter of the drill pipe body 1.

[0032] The utility model provides an impact-resistant screw rod. Compared with the prior art, an impact-resistant component 2 is added to the original drill rod body 1, and the impact-resistant component 2 is used to drill the medium (the soil layer or rock layer to be drilled in the utility model). The structural strength of the impact-resistant component 2 is extremely large, which can protect the drill rod body 1 and improve the destructive ability and impact resistance to the medium. It solves the technical problem that the spiral drill rod used in the prior art has poor impact resistance and is easy to cause damage to the drill rod during drilling. It has the technical effect of improving the impact resistance of the drill rod, facilitating drilling without damaging the drill rod, and improving drilling efficiency.

[0033] The screw referred to in the present invention is a broad concept, which is a spiral drill rod or drilling tool.

[0034] In some embodiments, see Figures 3 to 5 The impact-resistant assembly 2 includes a tapered tube 21 and a plurality of impact edges 22. The tapered tube 21 is tapered and has a hollow cavity 26 formed therein. The tapered tube 21 has an end with a larger outer diameter and an end with a smaller outer diameter. The end with a larger outer diameter is open and the end with a smaller outer diameter is closed. The end with a larger outer diameter is detachably connected to the front end of the drill pipe body 1, and the end with a smaller outer diameter is used for drilling toward the medium. The plurality of impact edges 22 are plate-shaped and are all connected to the outer wall of the tapered tube 21. The plurality of impact edges 22 are evenly distributed along the outer circumference of the tapered tube 21 and form a circular ring. The impact edges 22 are used for drilling into the medium. In this embodiment, there are six impact edges 22, which are evenly distributed on the outer wall of the conical tube 21. As the conical tube 21 rotates, the multiple impact edges 22 can play a role in impacting and crushing the medium. The impact edges 22 are made of alloy material, which is stronger than the material used for the drill rod body 1. In this way, the medium is first destroyed by the impact edges 22, and a borehole can be formed in the medium after the destruction, and then the drill rod body 1 can extend into the borehole to continue drilling. The plane of the larger side of the impact edge 22 is set perpendicular to the radial plane of the conical tube 21. From the end with the smaller outer diameter of the conical tube 21 to the other end, the diameter of the circle surrounded by the multiple impact edges 22 gradually increases. In this way, the end with the smaller diameter is used to drill the medium first, and then gradually drill into the borehole. Then, the multiple impact edges 22 can expand the inner diameter of the borehole, thereby achieving the effect of drilling into the medium.

[0035] Preferably, the width of the impact edge 22 gradually increases from the end of the conical tube 21 with a larger diameter to the other end, that is, the width of the impact edge 22 at the end of the conical tube 21 with a smaller diameter is larger, and this part is the part that mainly contacts the medium, so its width is set larger. In this way, the stability of the impact edge 22 during use can be improved.

[0036] To achieve the connection between the drill pipe body 1 and the impact resistant assembly 2, in some embodiments, refer to Figures 3 to 5 The outer wall of the front end of the drill rod body 1 is provided with an external thread 12, and the inner wall of the end with a larger outer diameter of the tapered tube 21 is provided with an internal thread 23, the internal thread 23 and the external thread 12 are matched and connected with each other, and the tapered tube 21 is screwed with the front end of the drill rod body 1. By screwing the anti-impact component 2, it can be connected with the drill rod body 1, and the connection is stable. It should be noted that the rotation direction of the anti-impact component 2 is consistent with the direction in which it is screwed to the drill rod body 1, so that it can be ensured that the anti-impact component 2 will not slip off the drill rod body 1 during the drilling process, and will not affect the drilling effect.

[0037] In order to enhance the crushing ability of the impact edge 22 on the medium, in some embodiments, see Figures 3 to 5A shovel head 24 is fixedly connected to the end of the impact edge 22 away from the drill pipe body 1. The shovel head 24 is a long strip member and the cross section perpendicular to its length direction is triangular. The length direction of the shovel head 24 is arranged along the end of the impact edge 22. The side of the shovel head 24 close to the impact edge 22 is fixedly connected to the impact edge 22. Each impact edge 22 is provided with a shovel head 24. The outer end of the shovel head 24 is sharp, which can contact and damage the medium, which is conducive to drilling into a hole. Moreover, the material of the shovel head 24 is the same as that of the impact edge 22, which has a high strength and will not be damaged, which can improve the drilling efficiency. The shovel head 24 is equivalent to a blade, which can cut and damage the medium, which is conducive to drilling.

[0038] In some embodiments, see Figures 3 to 5 The plurality of impact edges 22 are fixedly connected to each other at one end of the tapered tube 21 with a smaller outer diameter, and a sharp cone 25 is provided at the position where the plurality of impact edges 22 are connected to each other, and the sharp cone 25 is provided in the axial direction of the tapered tube 21. The sharp cone 25 has a tip and a flat end, and is in a conical structure. The tip can be positioned on the medium, and the flat end is used to connect the plurality of impact edges 22. By screwing the tapered tube 21, the sharp cone 25 can enter the inside of the medium to form a drill hole. The hardness of the material of the sharp cone 25 is greater than the hardness of the impact edge 22 or the shovel head 24, and will not be damaged or fall off the tapered tube 21 during the drilling process.

[0039] In some embodiments, see Figures 3 to 5 The conical tube 21 includes a connecting portion 211, a transition portion 212, a conical portion 213 and a conical portion 214 which are connected to each other in sequence from the end with a larger outer diameter to the end with a smaller outer diameter. The hollow cavity 26 is formed inside the connecting portion 211 and the transition portion 212. The connecting portion 211 is used to connect the front end of the drill pipe body 1. The impact edge 22 is arranged along the axial direction of the conical tube 21 on the outer wall of the connecting portion 211, the outer wall of the transition portion 212, the outer wall of the conical portion 213 and the outer wall of the conical portion 214. The interior of the conical portion 213 and the conical portion 214 are both solid, which is a solid component. The impact edge 22 has a large strength after being connected and will not fall off.

[0040] In some embodiments, see Figure 1 to Figure 2 The drill rod body 1 includes a first rod body 13 and a second rod body 14. The first rod body 13 is hollow and has a first connecting portion 15 at one end. The second rod body 14 is hollow and has a second connecting portion 16 at one end. The second rod body 14 is detachably connected to the first connecting portion 15 in the axial extension direction of the first rod body 13. The distance between the end of the first rod body 13 and the end of the second rod body 14 can be adjusted. The materials of the first rod body 13 and the second rod body 14 in this embodiment are both materials used in the prior art for making spiral drill rods, so the utility model is easy to process and manufacture.

[0041] In some embodiments, see Figure 1 to Figure 2 The first connection part 15 is a cylindrical stud. The impact-resistant assembly 2 is arranged on the end of the first rod 13 away from the stud. The stud is coaxially arranged with the first rod 13 and in the axial extension direction of the first rod 13. The second connection part 16 is arranged in a cylindrical groove at the end of the second rod 14. The stud and the groove are plugged into each other and the depth of the plugging can be adjusted. The depth direction of the groove is along the axial direction of the second rod 14. The groove and the stud are matched and plugged into each other. In this embodiment, the lengths of the first rod 13 and the second rod 14 are not limited.

[0042] In some embodiments, see Figure 1 to Figure 2 A threaded structure is provided in the groove, and the threaded structure and the stud are screwed together. The first rod body 13 or the second rod body 14 is screwed to adjust the insertion depth of the stud in the groove, so as to adjust the distance between the first rod body 13 and the second rod body 14, and the first rod body 13 and the second rod body 14 can be fixed to each other. A screw is passed through the second rod body 14, and the axial direction of the screw is along the radial direction of the second rod body 14. By screwing the screw, the inner end of the screw can abut against the stud, so that the stud can be locked and fixed in the groove, so that the first rod body 13 and the second rod body 14 are fixedly connected to each other, which will not affect the drilling effect in the later stage.

[0043] In some embodiments, see Figure 1 to Figure 2 , the outer wall of the first rod body 13 and the second rod body 14 is provided with a plurality of wear-resistant components 17, the wear-resistant components 17 are used to contact and rub the inner wall of the borehole with the rotation of the first rod body 13 and the second rod body 14, and the plurality of wear-resistant components 17 are arranged in a spiral shape along the axial direction of the first rod body 13 or the second rod body 14. The plurality of wear-resistant components 17 are installed on the first rod body 13 and the second rod body 14 later, and the installation and removal are also relatively easy and convenient. In the figure, when there is a gap between the right end of the first rod body 13 and the left end of the second rod body 14, a dust ring (not shown in the figure) can be set in the gap to fill the gap and prevent the rock formation from entering the gap during drilling.

[0044] The spiral blade 11 is welded to the first rod body 13 and the second rod body 14, and has the same function and principle as the spiral blade on the spiral drill rod in the prior art, and will not be described in detail in this embodiment. The outer diameter of the first rod body 13 is the same as the outer diameter of the second rod body 14, so that they can be combined and regarded as an integral screw drill tool before the drilling operation can be carried out. Compared with the spiral drill rod or screw in the prior art, the length of the utility model can be adjusted. Therefore, by using the screw in this embodiment, the overall length of the drill rod can be adjusted within a short distance without the need for an additional external screw. The adjustment method is relatively simple and easy to operate, so that the screw drilling depth can be adjusted within a short distance, meeting the requirements of vertical shaft drilling and improving the drilling quality.

[0045] Specifically, the wear-resistant component 17 is a PDC cutting tooth, which can cut the inner wall of the borehole during the drilling process so as to cut and shape the inner wall of the borehole.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An impact-resistant screw, characterized in that: include: A drill rod body, the outer wall of which is formed with spiral blades, the drill rod body is used for drilling holes, the drill rod body has a front end and a rear end, the front end is used for drilling, and the rear end is used for connecting to the power output end of the driving device; An impact-resistant component is detachably connected to the front end of the drill rod body, and is used to contact the medium and crush the medium. The impact-resistant component uses the rotation torque of the drill rod body to drill a hole into the medium. The outer diameter of the impact-resistant component is greater than or equal to the outer diameter of the drill rod body. The drill pipe body comprises: The first rod body is hollow and has a first connecting portion at one end; The second rod body is hollow and has a second connecting portion at one end. The second rod body is in the axial extension direction of the first rod body. The second connecting portion is detachably connected to the first connecting portion. The distance between the end of the first rod body and the end of the second rod body can be adjusted. The first connecting portion is a cylindrical stud, the anti-impact assembly is arranged on one end of the first rod body away from the stud, the stud is arranged coaxially with the first rod body and in the axial extension direction of the first rod body, the second connecting portion is arranged in a cylindrical groove at the end of the second rod body, the stud and the groove are plugged into each other and the insertion depth can be adjusted; A thread structure is provided in the groove, and the thread structure is threadedly connected with the stud. The first rod body or the second rod body is screwed to adjust the insertion depth of the stud in the groove, so as to adjust the distance between the first rod body and the second rod body, and the first rod body and the second rod body can be fixed to each other; The impact-resistant component comprises: The conical tube is conical in shape and has a hollow cavity formed inside. The conical tube has an end with a larger outer diameter and an end with a smaller outer diameter. The end with the larger outer diameter is open and the end with the smaller outer diameter is closed. The end with the larger outer diameter is detachably connected to the front end of the drill rod body, and the end with the smaller outer diameter is used for drilling toward the medium. A plurality of impact edges are plate-shaped and are connected to the outer wall of the conical cylinder. The plurality of impact edges are evenly distributed along the outer circumference of the conical cylinder and form a circular ring. The impact edges are used to drill into the medium.

2. An impact-resistant screw as claimed in claim 1, characterized in that: The front end outer wall of the drill rod body is provided with an external thread, the inner wall of the end with a larger outer diameter of the tapered tube is provided with an internal thread, the internal thread and the external thread are matched and connected with each other, and the tapered tube is screwed to the front end of the drill rod body.

3. An impact-resistant screw as claimed in claim 1, characterized in that: A shovel head is fixedly connected to the end of the impact edge away from the drill pipe body. The shovel head is a long strip member and has a triangular cross-section perpendicular to its length direction. The length direction of the shovel head is arranged along the end of the impact edge, and the shovel head is fixedly connected to the impact edge on one side close to the impact edge.

4. An impact-resistant screw as claimed in claim 1, characterized in that: The plurality of impact edges are fixedly connected to each other at the end of the tapered tube with a smaller outer diameter, and a pointed cone is provided at the position where the plurality of impact edges are connected to each other, and the pointed cone is provided in the axial direction of the tapered tube.

5. The impact-resistant screw rod according to claim 1, characterized in that: The conical tube includes, from the end with larger outer diameter to the end with smaller outer diameter, a connecting portion, a transition portion, a conical portion and a cone portion which are connected to each other in sequence. The hollow cavity is formed inside the connecting portion and the transition portion. The connecting portion is used to connect the front end of the drill pipe body. The impact edge is commonly arranged on the outer wall of the connecting portion, the outer wall of the transition portion, the outer wall of the conical portion and the outer wall of the cone portion along the axial direction of the conical tube.

6. The impact-resistant screw rod according to claim 1, characterized in that: The outer walls of the first rod body and the second rod body are provided with a plurality of wear-resistant components, which are used to contact and frictionally contact the inner wall of the borehole as the first rod body and the second rod body rotate. The plurality of wear-resistant components are arranged in a spiral shape along the axial direction of the first rod body or the second rod body.

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