Self-adaptive diamond reamer

Abstract

The utility model relates to the technical field of hole expanders, in particular to a self-adaptive diamond hole expander, which has high supporting force on a plurality of tool arms, large contact area between a diamond blade and a hole wall, good reliability and better hole expanding effect. Comprising a main pipe body and a tip, a cavity is formed in the main pipe body, an inlet communicated with the cavity is formed in the upper end face of the main pipe body, the lower portion of the ejector rod is slidably inserted into the cavity of the main pipe body through the inlet, and the ejector rod is in transmission connection with the inner wall of the upper portion of the cavity of the main pipe body through the spline pair. A plurality of sliding grooves are evenly formed in the circumference of the outer wall of the main pipe body, the ejector blocks are slidably installed in the sliding grooves of the main pipe body respectively, the diamond particles are installed on the outer walls of the ejector blocks respectively, the lower ends of the push rods are rotationally connected with the inner walls of the ejector blocks respectively, and the upper ends of the push rods are rotationally connected with the lower portion of the ejector rod.

Description

Technical Field

[0001] The utility model relates to the technical field of reamers, in particular to an adaptive diamond reamer. Background Art

[0002] A diamond reamer is a drilling tool connected between a diamond drill bit and a core barrel, mainly used to enlarge the hole diameter and trim the hole wall to ensure that the hole diameter does not shrink. The utility model patent with the publication number of CN218092909U proposes an arc-surface round cake-shaped reaming blade spiral-arranged diamond reamer, which is regularly arranged and distributed along a spiral line on the surface of the reamer steel body, keeps consistent with the arc surface of the drill bit outer diameter, has good conformity with the cylindrical surface of the hole wall, and has stable drilling. The utility model patent with the publication number of CN220705625U proposes a cantilever type adaptive reamer, which reams the hole wall of a drilled hole through a plurality of reaming arms that can adaptively open.

[0003] However, in the above-mentioned prior art, the supporting force of the main arm on the reaming arm during reaming is relatively low, and the reaming arm is inclined relative to the hole wall, resulting in a small contact area between the diamond on the reaming arm and the hole wall, uneven force on the reaming arm, easy damage, and poor reaming effect. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an adaptive diamond reamer with high supporting force for multiple arms, large contact area between diamond blades and the hole wall, good reliability, and better reaming effect.

[0005] An adaptive diamond reamer of the utility model comprises a main pipe body and a tip. The tip is conical and is installed at the lower end of the main pipe body. It also includes a push rod, a spline pair, a plurality of top blocks, a plurality of diamond particles and a plurality of push rods. A chamber is arranged inside the main pipe body, and an inlet communicating with the chamber is arranged on the upper end face of the main pipe body. The lower part of the push rod is slidably inserted into the chamber of the main pipe body through the inlet. The push rod is in transmission connection with the inner wall of the upper part of the chamber of the main pipe body through a spline pair. A plurality of sliding grooves are evenly arranged in a circumferential direction on the outer wall of the main pipe body, and a plurality of top blocks are respectively slidably installed in the plurality of sliding grooves of the main pipe body. A plurality of diamond particles are installed on the outer walls of the plurality of top blocks. The lower ends of the plurality of push rods are respectively rotatably connected with the inner walls of the plurality of top blocks, and the upper ends of the plurality of push rods are rotatably connected with the lower part of the push rod. The upper end of the push rod is in transmission connection with a driving mechanism. When the tip and the main pipe body are inserted into a drill hole, the main pipe body and the tip are subjected to resistance. The push rod straightens the plurality of push rods, thereby pushing the plurality of top blocks towards the outside of the main pipe body, so that the plurality of diamond particles are pressed against the hole wall. The push rod drives the main pipe body and the tip to rotate through the spline pair, and the main pipe body drives the plurality of top blocks and the plurality of diamond particles to rotate, so that the plurality of diamond particles expand the diameter of the drill hole. Compared with the prior art, the supporting force of the plurality of push rods on the plurality of top blocks is higher. The top blocks are parallel to the hole wall of the drill hole, so that the contact area between the plurality of diamond particles and the hole wall is larger, the force on the top blocks is uniform, and they are not easily damaged, and the reaming effect is better.

[0006] Preferably, the plurality of diamond particles are arranged in a staggered spiral shape; through the above setting, the cutting effect of the plurality of diamond particles on the hole wall is improved.

[0007] Preferably, it further includes a nut. The nut is installed at the top of the upper end of the push rod, and a threaded hole is concentrically arranged in the nut. The upper end of the push rod is threadedly connected with an external driving mechanism through the nut, and the connection is simple and reliable.

[0008] Preferably, it further includes a plurality of diameter-expanding teeth. A plurality of diameter-expanding teeth are installed on the outer wall of the main pipe body in a circumferential direction. The plurality of diameter-expanding teeth are located below the plurality of top blocks; by installing the plurality of diameter-expanding teeth to pre-expand the diameter of the hole wall with a fixed diameter, the working efficiency is improved.

[0009] Preferably, it further includes a piston, a spring, a hydraulic pipeline and a plurality of diamond studs. A piston chamber is arranged at the bottom of the chamber of the main pipe body. A piston is arranged at the lower end of the ejector rod. The piston is slidably installed in the piston chamber. The upper end of the spring is connected to the piston, and the lower end of the spring is connected to the tip. A hydraulic pipeline is arranged inside the tip. An oil inlet hole of the hydraulic pipeline is arranged on the upper end surface of the tip. A plurality of sliding holes are arranged on the outer wall of the tip. The plurality of sliding holes are communicated with the hydraulic pipeline. The plurality of diamond studs are slidably installed in the plurality of sliding holes. Hydraulic oil is filled in the piston chamber and the hydraulic pipeline of the main pipe body. When the main pipe body and the tip are subjected to resistance, the ejector rod drives the piston to move towards the bottom of the piston chamber of the main pipe body, so that the piston pressurizes the hydraulic oil. The hydraulic oil pushes the plurality of diamond studs towards the outside of the tip through the hydraulic oil channel, so that the outer ends of the plurality of diamond studs extend out of the tip, so that the plurality of diamond studs expand the diameter of the hole bottom. When the diameter expansion is completed, the ejector rod is no longer subjected to resistance, and the spring releases the stored energy to push the ejector rod upwards to reset in the main pipe body, and the practicability is good.

[0010] Preferably, it further includes a plug. A through hole is arranged on the outer wall of the main pipe body. The through hole is communicated with the piston chamber. The plug is rotationally screwed in the through hole of the main pipe body. After removing the plug, hydraulic oil is filled into the piston chamber through the through hole of the main pipe body. After filling is completed, the plug is tightened to seal the through hole, and the practicability is good.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: the supporting force of the plurality of push rods on the plurality of top blocks is higher, and the top blocks are parallel to the hole wall of the drill hole, so that the contact area between the plurality of diamond particles and the hole wall is larger, the force on the top blocks is uniform, and it is not easy to be damaged, and the hole expansion effect is better. Description of the Drawings

[0012] Figure 1 is the front sectional structure schematic diagram of the present utility model;

[0013] Figure 2 is the axonometric structure schematic diagram of the present utility model;

[0014] Figure 3 is the partial sectional structure schematic diagram of the present utility model;

[0015] Figure 4 is the partial sectional axonometric structure schematic diagram looking up of the present utility model;

[0016] Figure 5 is the structure schematic diagram of the present utility model in a disassembled state.

[0017] Markings in the drawings: 1, main pipe body; 2, tip; 3, ejector rod; 4, spline pair; 5, top block; 6, diamond particles; 7, push rod; 8, nut; 9, diameter-expanding tooth; 10, piston; 11, spring; 12, hydraulic pipeline; 13, diamond stud; 14, plug. Detailed Embodiment

[0018] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0019] Embodiment 1

[0020] As Figures 1 to 5 shown, an adaptive diamond reamer includes a main body 1 and a tip 2. The tip 2 is conical and is installed at the lower end of the main body 1. It also includes a push rod 3, a spline pair 4, a plurality of top blocks 5, a plurality of diamond particles 6 and a plurality of push rods 7. A chamber is provided inside the main body 1, and an inlet communicating with the chamber is provided on the upper end face of the main body 1. The lower part of the push rod 3 is slidably inserted into the chamber of the main body 1 through the inlet, and the push rod 3 is drivingly connected with the inner wall of the upper part of the chamber of the main body 1 through the spline pair 4. A plurality of chutes are evenly arranged circumferentially on the outer wall of the main body 1, and a plurality of top blocks 5 are respectively slidably installed in the plurality of chutes of the main body 1. A plurality of diamond particles 6 are installed on the outer walls of the plurality of top blocks 5, the lower ends of the plurality of push rods 7 are respectively rotatably connected with the inner walls of the plurality of top blocks 5, and the upper ends of the plurality of push rods 7 are rotatably connected with the lower part of the push rod 3; the plurality of diamond particles 6 are arranged in a staggered spiral shape; it also includes a nut 8, the nut 8 is installed on the top of the upper end of the push rod 3, and the nut 8 is concentrically provided with a threaded hole; it also includes a plurality of expanding teeth 9, and a plurality of expanding teeth 9 are installed circumferentially on the outer wall of the main body 1, and the plurality of expanding teeth 9 are located below the plurality of top blocks 5.

[0021] The upper end of the push rod 3 is threadedly connected with an external driving mechanism through the nut 8. When the tip 2 and the main body 1 are inserted into the drill hole, the plurality of expanding teeth 9 perform pre-expansion of the hole diameter on the hole wall. When the main body 1 and the tip 2 are subjected to resistance, the push rod 3 flattens the plurality of push rods 7, thereby pushing the plurality of top blocks 5 outward of the main body 1, so that the plurality of diamond particles 6 are pressed against the hole wall. The push rod 3 drives the main body 1 and the tip 2 to rotate through the spline pair 4, and the main body 1 drives the plurality of top blocks 5 and the plurality of diamond particles 6 to rotate, so that the plurality of diamond particles 6 expand the drill hole. Compared with the prior art, the supporting force of the plurality of push rods 7 on the plurality of top blocks 5 is higher, the top blocks 5 are parallel to the hole wall of the drill hole, so that the contact area between the plurality of diamond particles 6 and the hole wall is larger, the force on the top blocks 5 is uniform, and it is not easy to be damaged, and the reaming effect is better. Through the above settings, the cutting effect of the plurality of diamond particles 6 on the hole wall is improved.

[0022] Embodiment 2

[0023] As Figures 3 to 5As shown, on the basis of Embodiment 1, it further includes a piston 10, a spring 11, a hydraulic pipeline 12, and a plurality of diamond studs 13. A piston chamber is provided at the bottom of the chamber of the main body 1. The lower end of the ejector rod 3 is provided with a piston 10. The piston 10 is slidably installed in the piston chamber. The upper end of the spring 11 is connected to the piston 10, and the lower end of the spring 11 is connected to the tip 2. A hydraulic pipeline 12 is provided inside the tip 2. An oil inlet hole of the hydraulic pipeline 12 is provided on the upper end surface of the tip 2. A plurality of sliding holes are provided on the outer wall of the tip 2. The plurality of sliding holes communicate with the hydraulic pipeline 12. A plurality of diamond studs 13 are slidably installed in the plurality of sliding holes. It further includes a plug 14. A through hole is provided on the outer wall of the main body 1. The through hole communicates with the piston chamber. The plug 14 is rotationally screwed in the through hole of the main body 1.

[0024] After removing the plug 14, hydraulic oil is filled into the piston chamber through the through hole of the main body 1. After filling is completed, the plug 14 is tightened to seal the through hole. When the main body 1 and the tip 2 are subjected to resistance, the ejector rod 3 drives the piston 10 to move towards the bottom of the piston chamber of the main body 1, so that the piston 10 pressurizes the hydraulic oil. The hydraulic oil pushes the plurality of diamond studs 13 outward from the tip 2 through the hydraulic oil channel, so that the outer ends of the plurality of diamond studs 13 extend out of the tip 2, so that the plurality of diamond studs 13 expand the diameter of the hole bottom. When the diameter expansion is completed, the ejector rod 3 is no longer subjected to resistance, and the spring 11 releases the stored energy and pushes the ejector rod 3 upward to reset in the main body 1.

[0025] As Figures 1 to 5 shown, for an adaptive diamond reamer of the present utility model, during operation, first, the plug 14 is removed and hydraulic oil is filled into the piston chamber of the main body 1. After filling is completed, the plug 14 is tightened to seal the through hole. The upper end of the ejector rod 3 is threadedly driven by a nut 8 and a driving mechanism. Then, when the tip 2 and the main body 1 are inserted into the drill hole, the main body 1 and the tip 2 are subjected to resistance. The ejector rod 3 drives the piston 10 to move towards the bottom of the piston chamber of the main body 1, so that the piston 10 pressurizes the hydraulic oil. The hydraulic oil pushes the plurality of diamond studs 13 outward from the tip 2 through the hydraulic pipeline 12, so that the outer ends of the plurality of diamond studs 13 extend out of the tip 2, so that the plurality of diamond studs 13 expand the diameter of the hole bottom. The plurality of expanding teeth 9 perform pre-expansion of the fixed diameter on the hole wall. Then, the ejector rod 3 flattens the plurality of push rods 7 to push the plurality of top blocks 5 outward from the main body 1, so that the plurality of diamond particles 6 are pressed against the hole wall. The ejector rod 3 drives the main body 1 and the tip 2 to rotate through a spline pair 4. The main body 1 drives the plurality of top blocks 5 and the plurality of diamond particles 6 to rotate, so that the plurality of diamond particles 6 expand the diameter of the drill hole. Finally, when the diameter expansion is completed, the ejector rod 3 is no longer subjected to resistance, and the spring 11 releases the stored energy and pushes the ejector rod 3 upward to reset in the main body 1.

[0026] The main functions achieved by the present utility model are:

[0027] 1. It has a high supporting force for multiple tool arms, a large contact area between the diamond blade and the hole wall, good reliability, and better reaming effect.

[0028] 2. Ream the bottom of the hole through the hydraulic oil assembly.

[0029] 3. It can adaptively ream the hole size according to the force, with good practicability.

[0030] For an adaptive diamond reamer of the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; the main body 1, tip 2, spline pair 4, diamond particles 6, nut 8, reaming teeth 9, piston 10, spring 11, diamond slide column 13, plug 14 of the adaptive diamond reamer of the present utility model are purchased on the market, and those skilled in the art only need to install and operate according to the attached instruction manual, without the need for creative labor of those skilled in the art.

[0031] All the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An adaptive diamond reamer, comprising a main body (1) and a tip (2), the tip (2) being conical and the tip (2) being installed at the lower end of the main body (1); characterized in that, It further includes a push rod (3), a spline pair (4), a plurality of top blocks (5), a plurality of diamond particles (6) and a plurality of push rods (7). An inner chamber is provided inside the main pipe body (1), and an inlet communicating with the chamber is provided on the upper end surface of the main pipe body (1). The lower part of the push rod (3) is slidably inserted into the chamber of the main pipe body (1) through the inlet, and the push rod (3) is drivingly connected to the upper inner wall of the chamber of the main pipe body (1) through the spline pair (4). A plurality of chutes are evenly arranged in a circumferential direction on the outer wall of the main pipe body (1), and a plurality of top blocks (5) are respectively slidably installed in the plurality of chutes of the main pipe body (1). A plurality of diamond particles (6) are installed on the outer walls of the plurality of top blocks (5), and the lower ends of the plurality of push rods (7) are respectively rotatably connected to the inner walls of the plurality of top blocks (5), and the upper ends of the plurality of push rods (7) are rotatably connected to the lower part of the push rod (3).

2. The self-adaptive diamond reamer according to claim 1, wherein The plurality of diamond particles (6) are arranged in a staggered spiral shape.

3. The self-adaptive diamond reamer according to claim 1, characterized in that, It further includes a nut (8), and the nut (8) is installed on the top of the upper end of the push rod (3), and a threaded hole is concentrically arranged in the nut (8).

4. An adaptive diamond reamer according to claim 1, characterized in that, It further includes a plurality of diameter-expanding teeth (9), and a plurality of diameter-expanding teeth (9) are installed on the outer wall of the main pipe body (1) in a circumferential direction, and the plurality of diameter-expanding teeth (9) are located below the plurality of top blocks (5).

5. An adaptive diamond reamer as claimed in claim 1, wherein, It further includes a piston (10), a spring (11), a hydraulic pipeline (12) and a plurality of diamond sliding columns (13). A piston chamber is provided at the bottom of the chamber of the main pipe body (1), a piston (10) is provided at the lower end of the push rod (3), and the piston (10) is slidably installed in the piston chamber. The upper end of the spring (11) is connected to the piston (10), the lower end of the spring (11) is connected to the tip (2), a hydraulic pipeline (12) is provided inside the tip (2), an oil inlet hole of the hydraulic pipeline (12) is provided on the upper end surface of the tip (2), a plurality of sliding holes are provided on the outer wall of the tip (2), and the plurality of sliding holes communicate with the hydraulic pipeline (12), and a plurality of diamond sliding columns (13) are slidably installed in the plurality of sliding holes.

6. An adaptive diamond reamer as claimed in claim 5, wherein, It further includes a plug (14), a through hole is provided on the outer wall of the main pipe body (1), and the through hole communicates with the piston chamber, and the plug (14) is rotationally screwed in the through hole of the main pipe body (1).

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