Detachable drill rod

Abstract

The utility model relates to a detachable drill rod which comprises a first drill rod body, a first limiting block, a first connecting base, a second drill rod body, a second limiting block, a locking block and a second connecting base. The first limiting block is fixed to the top of the side face of the first drill rod. The first connecting base is of an L-shaped annular structure and arranged on the first drill rod in a sleeving mode, and the inner top of the first connecting base abuts against the bottom of the first limiting block. The second drill rod is in butt joint with the first drill rod; the second limiting block is fixed to the bottom of the side face of the second drill rod. The locking block is of an inverted L-shaped annular structure and is in threaded connection with the first connecting seat; the second connecting base is embedded between the second drill rod and the first connecting base in a sleeved mode, the bottom of the second connecting base abuts against the top of the second limiting block, and the top of the second connecting base abuts against the inner bottom of the locking block. The first drill rod and the second drill rod can be freely connected and detached, and use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile foundation drilling, in particular to a detachable drilling rod. Background Art

[0002] After the steel pipe pile head is inserted into the rock surface, the pile bottom is located in the strong and medium weathered gravel rock layer, and it is impossible to use a vibrating hammer to vibrate the pile. The bottom rock layer of the steel pipe pile needs to be drilled with a down-the-hole hammer. After the hole is drilled to the design elevation of the cofferdam bottom, the steel pipe pile is continued to be vibrated and sunk to the design pile top elevation.

[0003] When the pile hole is deep, the drill rod needs to be lengthened when the length cannot meet the requirement. Currently, the drill rod is usually lengthened by connecting two drill rods by welding. In this connection method, the two drill rods cannot be disassembled and are inconvenient to use. Utility Model Content

[0004] The main purpose of the utility model is to provide a detachable drill rod, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A detachable drill rod comprising

[0007] First drill pipe;

[0008] A first limit block is fixed on the top of the side of the first drill rod;

[0009] The first connecting seat is an L-shaped ring structure, which is sleeved on the first drill rod, and the inner top of the first connecting seat is in contact with the bottom of the first limit block;

[0010] A second drill rod, connected to the first drill rod;

[0011] A second limiting block is fixed to the bottom of the side of the second drill rod;

[0012] The locking block is an inverted L-shaped ring structure and is threadedly connected to the first connecting seat;

[0013] The second connecting seat is sleeved and embedded between the second drill rod and the first connecting seat, the bottom of which abuts against the top of the second limiting block, and the top abuts against the inner bottom of the locking block.

[0014] Optionally, a plurality of positioning blocks are fixed to the side of the locking block, the plurality of positioning blocks are distributed in a circle, and the diameter of the positioning blocks is slightly smaller than the inner diameter of the steel pipe pile.

[0015] Optionally, the outer surface of the positioning block is an arc structure.

[0016] Optionally, the first limiting block and the second limiting block are both trapezoidal ring structures.

[0017] Optionally, a sealing gasket is provided between the outer side surfaces of the first limiting block and the second limiting block and the inner side surface of the first connecting seat.

[0018] Optionally, an annular groove is provided on the outer side of the upper end of the first connecting seat, a thread is provided on the side of the annular groove, and a thread is correspondingly provided on the inner side of the locking block.

[0019] Optionally, the upper end of the second connecting seat is a limiting shoulder of a trapezoidal structure, the bottom of the limiting shoulder abuts against the top of the first connecting seat, and the upper inclined surface of the limiting shoulder abuts against the inner bottom of the locking block.

[0020] The utility model provides a detachable drill rod, which has the following beneficial effects:

[0021] When the first drill rod and the second drill rod are connected, the first drill rod is first connected to the second drill rod, and the first connecting seat is sleeved on the first drill rod, and the inner top of the first connecting seat is abutted against the bottom of the first limit block, and then the second connecting seat is sleeved and embedded between the second drill rod and the first connecting seat, and the bottom of the second connecting seat is abutted against the top of the second limit block, and finally the locking block is threadedly connected to the first connecting seat, and the locking block is tightened so that the inner bottom of the locking block abuts against the top of the second connecting seat, thereby clamping the second connecting seat between the second limit block and the locking block, and the first drill rod and the second drill rod are connected to each other and cannot be separated. Similarly, after removing the locking block, the first connecting seat and the second connecting seat can be separated, and the first drill rod and the second drill rod can be disassembled. Therefore, the utility model can freely connect and disassemble the first drill rod and the second drill rod, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the detachable drill rod of the utility model;

[0023] Figure 2 It is a top view of the detachable drill rod of the utility model.

[0024] In the figure: 1. first drill rod; 2. first limit block; 3. first connecting seat; 4. second drill rod; 5. second limit block; 6. locking block; 7. second connecting seat; 8. positioning block; 9. sealing gasket; 10. annular groove; 11. limit shoulder. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the utility model.

[0026] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Examples, such as Figure 1-2 As shown, a detachable drill rod comprises a first drill rod 1, a first limit block 2, a first connecting seat 3, a second drill rod 4, a second limit block 5, a locking block 6 and a second connecting seat 7;

[0030] The first limit block 2 is fixed to the top of the side of the first drill rod 1; the first connecting seat 3 is an L-shaped ring structure, which is sleeved on the first drill rod 1, and the inner top of the first connecting seat 3 abuts against the bottom of the first limit block 2; the second drill rod 4 is connected to the first drill rod 1; the second limit block 5 is fixed to the bottom of the side of the second drill rod 4; the locking block 6 is an inverted L-shaped ring structure, which is threadedly connected to the first connecting seat 3; the second connecting seat 7 is sleeved and embedded between the second drill rod 4 and the first connecting seat 3, the bottom abuts against the top of the second limit block 5, and the top abuts against the inner bottom of the locking block 6.

[0031] When the pile hole is deeper, the first drill rod 1 and the second drill rod 4 are connected to be lengthened. When the first drill rod 1 and the second drill rod 4 are connected, the first drill rod 1 and the second drill rod 4 are first docked, the first connecting seat 3 is sleeved on the first drill rod 1, and the inner top of the first connecting seat 3 is abutted against the bottom of the first limit block 2, and then the second connecting seat 7 is sleeved and embedded between the second drill rod 4 and the first connecting seat 3, and the bottom of the second connecting seat 7 is abutted against the top of the second limit block 5, and finally the locking block 6 is threadedly connected to the first connecting seat 3, and the locking block 6 is tightened so that the inner bottom of the locking block 6 is abutted against the top of the second connecting seat 7, so that the second connecting seat 7 is clamped between the second limit block 5 and the locking block 6, and the first drill rod 1 and the second drill rod 4 are connected to each other and cannot be separated. Similarly, after removing the locking block 6, the first connecting seat 3 and the second connecting seat 7 can be separated, and the first drill rod 1 and the second drill rod 4 can be disassembled. Therefore, the utility model can freely connect and disassemble the first drill rod 1 and the second drill rod 4, which is convenient to use.

[0032] In a specific embodiment, a plurality of positioning blocks 8 are fixed to the side of the locking block 6 , and the plurality of positioning blocks 8 are distributed in a circumference, and the diameter of the positioning block 8 is slightly smaller than the inner diameter of the steel pipe pile.

[0033] When the first drill rod 1 and the second drill rod 4 are connected and the hole is drilled, they are placed in the steel pipe pile. The diameter of the positioning block 8 is slightly smaller than the inner diameter of the steel pipe pile, so that the positioning block 8 and the steel pipe pile are positioned, so that the first drill rod 1 and the second drill rod 4 are located on the central axis of the steel pipe pile to prevent them from shifting and ensure accurate positioning of the hole.

[0034] In a specific embodiment, the outer surface of the positioning block 8 is an arc structure.

[0035] In a specific embodiment, the first limiting block 2 and the second limiting block 5 are both trapezoidal ring structures.

[0036] In a specific embodiment, a sealing gasket 9 is provided between the outer side surfaces of the first limit block 2 and the second limit block 5 and the inner side surface of the first connecting seat 3. The first drill rod 1 and the second drill rod 4 are in close contact with the first connecting seat 3 through the sealing gasket 9 to prevent relative radial displacement between the first drill rod 1 and the second drill rod 4 and ensure the coaxiality of the first drill rod 1 and the second drill rod 4.

[0037] In a specific embodiment, an annular groove 10 is disposed on the outer side of the upper end of the first connecting seat 3 , a thread is disposed on the side of the annular groove 10 , and a thread is correspondingly disposed on the inner side of the locking block 6 .

[0038] In a specific embodiment, the upper end of the second connecting seat 7 is a limiting shoulder 11 of a trapezoidal structure, the bottom of the limiting shoulder 11 abuts against the top of the first connecting seat 3, and the upper inclined surface of the limiting shoulder 11 abuts against the inner bottom of the locking block 6.

[0039] In a specific embodiment, a plurality of protrusions are provided on the top of the first limit block 2, and a plurality of grooves are provided on the bottom of the second limit block 5. When the first drill rod 1 and the second drill rod 4 are docked, the protrusions are inserted into the corresponding grooves, thereby further ensuring that the first drill rod 1 and the second drill rod 4 are firmly connected and rotate synchronously.

[0040] 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 aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable drill rod, characterized in that: include First drill pipe; A first limit block is fixed on the top of the side of the first drill rod; The first connecting seat is an L-shaped ring structure, which is sleeved on the first drill rod, and the inner top of the first connecting seat is in contact with the bottom of the first limit block; A second drill rod, connected to the first drill rod; A second limiting block is fixed to the bottom of the side of the second drill rod; The locking block is an inverted L-shaped ring structure and is threadedly connected to the first connecting seat; The second connecting seat is sleeved and embedded between the second drill rod and the first connecting seat, the bottom of which abuts against the top of the second limiting block, and the top abuts against the inner bottom of the locking block.

2. A detachable drill rod according to claim 1, characterized in that: A plurality of positioning blocks are fixed on the side of the locking block, the plurality of positioning blocks are distributed in a circumference, and the diameter of the positioning blocks is smaller than the inner diameter of the steel pipe pile.

3. A detachable drill rod according to claim 2, characterized in that: The outer surface of the positioning block is an arc structure.

4. The detachable drill rod according to claim 1, characterized in that: The first limiting block and the second limiting block are both trapezoidal ring structures.

5. The detachable drill rod according to claim 1, characterized in that: A sealing gasket is arranged between the outer side surfaces of the first limiting block and the second limiting block and the inner side surface of the first connecting seat.

6. The detachable drill rod according to claim 1, characterized in that: An annular groove is arranged on the outer side of the upper end of the first connecting seat, a thread is arranged on the side of the annular groove, and a thread is arranged on the inner side of the locking block correspondingly.

7. The detachable drill rod according to claim 1, characterized in that: The upper end of the second connecting seat is a limiting shoulder of a trapezoidal structure, the bottom of the limiting shoulder abuts against the top of the first connecting seat, and the upper inclined surface of the limiting shoulder abuts against the inner bottom of the locking block.

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