Drill rod with welded tail rod

Abstract

The utility model discloses a drill rod with a welded tail rod, and relates to the technical field of drill rods, the drill rod comprises a drill rod front end and a mounting mechanism, the replaceable mounting mechanism is arranged in the middle of the lower part of the drill rod front end, and the mounting mechanism comprises a drill bit, a mounting end, a telescopic spring, a limiting raised head, a limiting groove and a matching groove; a mounting end is fixed to the middle of the upper portion of the drill bit. Compared with an existing device, the drill rod with the welded tail rod has the advantages that the drill bit can be independently disassembled and assembled through cooperation of all parts of the mounting mechanism, the drill bit can be independently replaced when being damaged, the waste of replacing the whole drill rod is avoided, and therefore the use cost can be reduced; meanwhile, the drill bit and the front end of the drill rod can be limited in the radial direction, the risk that the drill bit slips and falls off in the working process is avoided, and through cooperation of all parts of the fixing mechanism, the working efficiency of the drill rod is higher, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of drill rods, in particular to a drill rod with a tail rod welded thereon. Background Art

[0002] At present, there are more and more activities such as environmental investigation, engineering exploration, geological investigation and model building. As a result, the demand for soil core drilling and sampling is also increasing, and drilling often requires the use of drill rods.

[0003] When the existing drill rod is used, the rod body and the drill bit at its end are often welded together as an integrated device. The drill bit is often the first and most force-contacted part during operation, which is prone to problems such as wear. When wear and other problems occur, the entire drill rod is often replaced, which results in a certain amount of economic waste.

[0004] Therefore, the existing structure and defects are studied and improved, and a drill rod with tail rod welding is provided, in order to achieve the purpose of having more practical value. Utility Model Content

[0005] The utility model aims to provide a drill rod with a welded tail rod, so as to solve the problem in the above background technology that when the existing drill rod is used, the rod body and the drill bit at its end are often welded as an integrated device, and the drill bit is often the first and most force-contacted part during operation, so it is easy to cause problems such as wear. When problems such as wear occur, the entire drill rod is often replaced, which will cause a certain amount of economic waste.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drill rod welded with a tail rod, comprising a front end of the drill rod and a mounting mechanism, wherein the replaceable mounting mechanism is arranged at the lower middle part of the front end of the drill rod, the mounting mechanism comprises a drill bit, a mounting end, a telescopic spring, a limiting protrusion, a limiting groove and a matching groove, a mounting end is fixed at the upper middle part of the drill bit, a telescopic spring is arranged at the inner middle part of the drill bit, and a limiting protrusion is installed at the front end of the telescopic spring, a limiting groove is arranged on the outside of the front end of the limiting protrusion, and a matching groove is opened on one side of the outer surface of the drill bit.

[0007] Furthermore, a drill rod tail is arranged above the front end of the drill rod, and a welding opening is arranged at the connection between the drill rod tail and the front end of the drill rod.

[0008] Furthermore, a fixing mechanism for increasing friction is provided in the middle of the outer surface of the front end of the drill rod, and the outer diameter of the fixing mechanism is larger than the outer diameter of the front end of the drill rod.

[0009] Furthermore, the fixing mechanism includes a spiral tooth and a drill block, and the drill block is fixed to the outer surface of the spiral tooth.

[0010] Furthermore, the fixing mechanism also includes a first air hole, and the first air hole is provided on the upper and lower surfaces of the spiral teeth.

[0011] Furthermore, the fixing mechanism also includes a second air hole, and the second air hole is arranged on the upper and lower sides of the spiral teeth.

[0012] Compared with the prior art, the utility model provides a drill rod with tail rod welding, which has the following beneficial effects:

[0013] 1. The utility model can realize the independent disassembly and assembly of the drill bit through the cooperation between the various parts of the installation mechanism, and can be replaced separately when damaged, avoiding the waste of replacing the entire drill rod, which is conducive to reducing the cost of use. At the same time, the drill bit and the front end of the drill rod can be radially limited to avoid the risk of the drill bit slipping and falling off during operation;

[0014] 2. Through the cooperation between the various parts of the fixing mechanism, the utility model can drill threaded holes with larger outer diameters in some parts that can well exert the bearing capacity of the threads, and at the same time, it also makes the working efficiency of the drill rod higher and the use effect better. At the same time, it can ensure the heat dissipation effect of the drill rod from the inside, thereby ensuring the service life of the entire drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of a drill rod welded with a tail rod according to the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a drill bit welded with a tail rod according to the utility model;

[0017] Figure 3 A drill rod welded with a tail rod according to the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 The utility model is a front view structural schematic diagram of a drill rod spiral tooth welded to a tail rod.

[0019] In the figure: 1. front end of drill rod; 2. tail of drill rod; 3. welding port; 4. mounting mechanism; 401. drill bit; 402. mounting end; 403. telescopic spring; 404. limiting protrusion; 405. limiting groove; 406. matching groove; 5. fixing mechanism; 501. spiral teeth; 502. drill block; 503. first air vent; 504. second air vent. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figure 1-Figure 3 As shown, a drill rod welded with a tail rod comprises a drill rod front end 1 and a mounting mechanism 4, wherein the replaceable mounting mechanism 4 is arranged at the middle part below the front end 1 of the drill rod, and the mounting mechanism 4 comprises a drill bit 401, a mounting end 402, a telescopic spring 403, a limiting convex head 404, a limiting groove 405 and a matching groove 406, wherein the mounting end 402 is fixed at the middle part above the drill bit 401, a telescopic spring 403 is arranged at the middle part inside the drill bit 401, and a limiting convex head 404 is arranged at the front end of the telescopic spring 403, and a limiting groove 405 is arranged at the outside of the front end of the limiting convex head 404, and a matching groove 406 is opened at one side of the outer surface of the drill bit 401;

[0023] Through the installation end 402 of the threaded structure, a tool can be inserted into the matching groove 406 and rotated to perform disassembly and assembly operations between the drill bit 401 and the front end 1 of the drill rod, thereby realizing independent disassembly and assembly of the drill bit 401, and it can be replaced separately when damaged, avoiding the waste of replacing the entire drill rod, which is beneficial to reducing the cost of use. Subsequently, through the telescopic spring 403 and the limiting convex head 404, when the drill rod rotates, the limiting convex head 404 can be extended into the limiting groove 405 by centrifugal force, so that the drill bit 401 and the front end 1 of the drill rod can be radially limited, avoiding the risk of the drill bit 401 slipping and falling off during operation;

[0024] like Figure 1 and Figure 4As shown, a drill pipe tail 2 is arranged above the front end 1 of the drill pipe, and a welding port 3 is arranged at the connection between the drill pipe tail 2 and the front end 1 of the drill pipe, a fixing mechanism 5 for improving friction is arranged in the middle of the outer surface of the front end 1 of the drill pipe, the outer diameter of the fixing mechanism 5 is larger than the outer diameter of the front end 1 of the drill pipe, the fixing mechanism 5 includes a spiral tooth 501 and a drill block 502, and the drill block 502 is fixed to the outer surface of the spiral tooth 501, the fixing mechanism 5 also includes a first air vent 503, the upper and lower surfaces of the spiral tooth 501 are provided with the first air vent 503, the fixing mechanism 5 also includes a second air vent 504, and the upper and lower sides of the spiral tooth 501 are provided with the second air vent 504. Through the spiral tooth 501 and the drill block 502, threaded holes with larger outer diameters can be drilled in some parts where the thread bearing capacity can be well exerted, and at the same time, the working efficiency of the drill pipe is higher and the use effect is good. Through the first air vent 503 and the second air vent 504, the heat dissipation effect of the drill pipe from the inside can be guaranteed, thereby ensuring the service life of the overall drill pipe.

[0025] Working principle: When using the drill rod welded with the tail rod, first, through the mounting end 402 of the threaded structure, a tool can be inserted into the matching groove 406 and rotated to disassemble and assemble the drill bit 401 and the front end 1 of the drill rod, thereby realizing independent disassembly and assembly of the drill bit 401, which can be replaced separately when damaged. Subsequently, through the telescopic spring 403 and the limiting protrusion 404, the centrifugal force can be used to make the limiting protrusion 404 extend into the limiting groove 405 when the drill rod rotates, so that the drill bit 401 and the front end 1 of the drill rod can be radially limited to prevent the drill bit 401 from slipping and falling off. At this time, through the spiral teeth 501 and the drill block 502, threaded holes with larger outer diameters can be drilled in some parts that can well exert the bearing capacity of the threads. Finally, through the first air vent 503 and the second air vent 504, the heat dissipation effect from the inside of the drill rod is guaranteed.

[0026] The above are only preferred embodiments of the present invention and are 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. A drill rod welded with a tail rod, comprising a drill rod front end (1) and a mounting mechanism (4), characterized in that: The replaceable mounting mechanism (4) is arranged at the middle part below the front end (1) of the drill rod, and the mounting mechanism (4) comprises a drill bit (401), a mounting end (402), a telescopic spring (403), a limiting convex head (404), a limiting groove (405) and a matching groove (406); the mounting end (402) is fixed at the middle part above the drill bit (401); the telescopic spring (403) is arranged at the middle part inside the drill bit (401); the limiting convex head (404) is installed at the front end of the telescopic spring (403); the limiting groove (405) is arranged outside the front end of the limiting convex head (404); and the matching groove (406) is opened on one side of the outer surface of the drill bit (401).

2. The tail rod welded drill rod according to claim 1, characterized in that: A drill rod tail (2) is arranged above the drill rod front end (1), and a welding opening (3) is arranged at the connection between the drill rod tail (2) and the drill rod front end (1).

3. The tail rod welded drill rod according to claim 1, characterized in that: A fixing mechanism (5) for increasing friction is provided in the middle of the outer surface of the front end (1) of the drill rod, and the outer diameter of the fixing mechanism (5) is larger than the outer diameter of the front end (1) of the drill rod.

4. The tail rod welded drill rod according to claim 3, characterized in that: The fixing mechanism (5) comprises a spiral tooth (501) and a drill block (502), and the drill block (502) is fixed on the outer surface of the spiral tooth (501).

5. The tail rod welded drill rod according to claim 4, characterized in that: The fixing mechanism (5) further comprises a first air vent (503), and the first air vent (503) is provided on the upper and lower surfaces of the spiral tooth (501).

6. The tail rod welded drill rod according to claim 4, characterized in that: The fixing mechanism (5) further comprises a second air vent (504), and the second air vent (504) is provided on the upper and lower sides of the spiral tooth (501).

Images