A coring device for a drilling rig

Abstract

The utility model discloses a coring device for a drilling rig, comprising a coring barrel drill bit, a connecting sleeve being fixed on the top of the coring barrel drill bit, a connecting head being arranged on the inner side of the connecting sleeve, a locking groove being opened on the side wall of the connecting head, and a side seat being fixed on the side wall of the connecting sleeve by being inlaid. The utility model designs a pull rod, a side seat, a locking block, a top spring, a connecting head and a connecting sleeve. When the drill bit is assembled, the connecting sleeve of the coring barrel drill bit is sleeved on the connecting head. During the sleeve installation process, the inclined surface of the locking block is squeezed and pushed, so that it slides into the side seat for avoidance. After it is completely sleeved, the top spring applies elastic squeezing action to the locking block, pushing one end of the locking block to be stuck in the locking groove of the side wall of the connecting head, so that the coring drill bit can be quickly installed. When disassembling, it only needs to pull the locking block by the pull rod to realize rapid unlocking and disassembly, so that the utility model is convenient and quick to disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of coring devices, and in particular relates to a coring device used for a drilling rig. Background Art

[0002] A coring drill is a core drill that is mechanically driven or hydraulically fed. It is mainly used as deep hole drilling equipment in the fields of geological prospecting, hydrological wells, coalfield geological exploration, oil and natural gas exploration and development. When the drill is conducting coring exploration, a coring drill bit device is installed on the working end of the drill, and sampling and coring are achieved through contact between the drill bit device and the surface of the coring area.

[0003] The existing coring drill bit device is connected to the working end of the coring drill rig, and is driven by the drill rig to rotate at high speed to realize the coring operation on the sampling surface, but it has the following defects:

[0004] (1) When the existing coring drill bit device for drilling rigs is in use, the end threaded barrel of the coring drill bit device and the working end of the drilling rig are screwed and installed. During the installation process, the drill bit needs to be rotated repeatedly, and at a later stage, the drill bit needs to be further turned and rotated using a tool to achieve locking. This connection method is time-consuming and labor-intensive, resulting in the problem of inconvenient and inefficient assembly and disassembly of the drill bit. For this reason, we propose a coring device for a drilling rig. Utility Model Content

[0005] The utility model aims to provide a coring device for a drilling rig, so as to solve the problem that the coring drill bit device proposed in the above background technology is fixed by threaded connection, which makes it inconvenient and inefficient to disassemble and assemble it later.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coring device for a drilling rig, comprising a coring barrel drill bit, a connecting sleeve fixed on the top of the coring barrel drill bit, a connecting head arranged on the inner side of the connecting sleeve, a locking groove opened on the side wall of the connecting head, a side seat fixed on the side wall of the connecting sleeve by inlaying, a locking block connected to the inside of the side seat by sliding, one end of the locking block is placed in the locking groove, a top spring is arranged on the other end of the locking block, a pull rod passes through the surface of the side seat, and one end of the pull rod is connected to the surface of the locking block.

[0007] Preferably, a center groove is opened at the center of the bottom end surface of the connecting head, a center column is arranged on the inner side of the center groove, and one end of the center column is fixed on the inner end surface of the connecting sleeve.

[0008] Preferably, the cross-sections of both the central column and the central groove are rectangular structures, and the central column and the central groove are connected by a clearance fit.

[0009] Preferably, an anti-slip groove is provided on the bottom end surface of the locking block, an anti-slip block is provided inside the anti-slip groove, and the anti-slip block is fixed on the inner wall of the side seat.

[0010] Preferably, a ball groove is formed on the end surface of the locking block, and a sphere is embedded in the ball groove.

[0011] Preferably, a guide column is arranged on the inner side of the top spring, a guide cylinder is sleeved on the outer wall of the guide column, the guide cylinder is connected to the inner wall of the side seat, and the guide column is connected to the surface of the locking block.

[0012] Preferably, the longitudinal section of the connector is a T-shaped structure, and the cross sections of both the connector and the connector sleeve are circular structures.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) Through the designed pull rod, side seat, locking block, top spring, connector and connecting sleeve, the traditional drill bit threaded connector is changed into a connecting sleeve and the connector is connected by the locking block to achieve rapid disassembly and assembly. The connector is fixed on the working head of the drilling rig. When the drill bit is assembled, the connecting sleeve of the core barrel drill bit is put on the connector. During the assembly process, the inclined surface of the locking block is squeezed and pushed, so that it slides into the side seat to avoid it. After it is completely put on, the top spring exerts elastic squeezing action on the locking block, pushing one end of the locking block to be stuck in the locking groove of the side wall of the connecting head, so that the core drill bit can be quickly installed. When disassembling, it only needs to pull the locking block by the pull rod to achieve rapid unlocking and disassembly. The new type is convenient and quick to disassemble and assemble. The cross-sections of the center column and the center groove are both rectangular structures. When the core drill bit is quickly connected, the center column is inserted into the center groove. The rectangular characteristics realize mutual clamping of the corners, thereby increasing the screw transmission strength between the connecting head and the connecting sleeve. The designed anti-dropping block and anti-dropping groove are used to limit the locking block to ensure that the locking block will not fall off the side seat when it moves back and forth in the side seat. The designed sphere is embedded in the surface of the locking block to reduce the friction resistance effect on the surface of the locking block, making its extrusion and pushing smoother. The designed guide tube and guide column are used to support and correct the top spring to prevent the top spring from excessive bending and loss of elasticity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 For this utility model Figure 1 The local structure cross-sectional view at point A in FIG.

[0017] Figure 3 It is a three-dimensional diagram of the connector of the utility model;

[0018] Figure 4This is a top view of the assembly of the connecting sleeve, the side seat and the center column of the utility model;

[0019] In the figure: 1. core barrel drill bit; 2. pull rod; 3. connector; 4. connecting sleeve; 5. side seat; 6. guide cylinder; 7. guide column; 8. center column; 9. anti-slip groove; 10. anti-slip block; 11. top spring; 12. ball; 13. center groove; 14. locking groove; 15. locking block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] Example

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a coring device for a drilling rig, comprising a coring barrel drill bit 1, a connecting sleeve 4 is fixed on the top of the coring barrel drill bit 1, a connecting head 3 is arranged on the inner side of the connecting sleeve 4, a locking groove 14 is opened on the side wall of the connecting head 3, a side seat 5 is fixed on the side wall of the connecting sleeve 4 by inlaying, a locking block 15 is connected to the inside of the side seat 5 by sliding, one end of the locking block 15 is placed in the locking groove 14, and a top spring 11 is arranged on the other end of the locking block 15, a pull rod 2 is passed through the surface of the side seat 5, and the traditional drill bit threaded connector is changed into a connecting sleeve 4 and a connecting head by designing the pull rod 2, the side seat 5, the locking block 15, the top spring 11, the connecting head 3 and the connecting sleeve 4. The locking block 15 is used for fast disassembly and assembly. The connector 3 is fixed on the working head of the drilling rig. When the drill is assembled, the connecting sleeve 4 of the core barrel drill 1 is sleeved on the connecting head 3. During the sleeve process, the inclined surface of the locking block 15 is squeezed and pushed, so that it slides into the side seat 5 for avoidance. After it is completely sleeved, the top spring 11 exerts elastic squeezing action on the locking block 15, pushing one end of the locking block 15 to be stuck in the locking groove 14 of the side wall of the connecting head 3, so as to realize fast installation of the core drill. When disassembling, it is only necessary to pull the locking block 15 through the pull rod 2 to realize fast unlocking and disassembly, so that the utility model is convenient and quick to disassemble and assemble. One end of the pull rod 2 is connected to the surface of the locking block 15.

[0023] In this embodiment, preferably, a center groove 13 is opened at the center of the bottom surface of the connecting head 3, and a center column 8 is arranged on the inner side of the center groove 13. One end of the center column 8 is fixed on the inner end surface of the connecting sleeve 4. The cross-sections of the center column 8 and the center groove 13 are both rectangular structures. Through the designed center column 8 and center groove 13, the cross-sections of the center column 8 and the center groove 13 are both rectangular structures. When the coring drill bit is quickly connected, the center column 8 is inserted into the center groove 13, and the corners are clamped to each other through the rectangular characteristics, thereby increasing the screwing transmission strength between the connecting head 3 and the connecting sleeve 4. The center column 8 and the center groove 13 are connected through clearance fit. An anti-slip groove 9 is opened on the bottom surface of the locking block 15, and an anti-slip block 10 is arranged on the inner side of the anti-slip groove 9. Through the designed anti-slip block 10 and anti-slip groove 9, the locking block 15 is limited to ensure that the locking block 15 will not fall off from the side seat 5 when it moves back and forth in the side seat 5, and the anti-slip block 10 is fixed on the inner wall of the side seat 5.

[0024] In this embodiment, preferably, a ball groove is provided on the end face of the locking block 15, and a sphere 12 is embedded in the ball groove. The sphere 12 is designed to be embedded in the surface of the locking block 15 to reduce the friction resistance effect on the surface of the locking block 15, making the extrusion and pushing smoother. A guide column 7 is provided on the inner side of the top spring 11, and a guide cylinder 6 is provided on the outer wall of the guide column 7. The designed guide cylinder 6 and guide column 7 are used to support and correct the deviation of the top spring 11 to prevent the top spring 11 from excessive bending and losing its elasticity. The guide cylinder 6 is connected to the inner wall of the side seat 5, and the guide column 7 is connected to the surface of the locking block 15. The longitudinal section of the connecting head 3 is a T-shaped structure, and the cross-sections of the connecting head 3 and the connecting sleeve 4 are both circular structures.

[0025] The working principle and use process of the utility model are as follows: the utility model fixes the connecting head 3 on the working head of the drilling rig. When the drill bit is assembled, the connecting sleeve 4 of the core barrel drill bit 1 is sleeved on the connecting head 3. During the sleeve installation process, the inclined surface of the locking block 15 is squeezed and pushed, causing it to slide into the side seat 5 for avoidance. After it is completely sleeved, the top spring 11 exerts elastic squeezing action on the locking block 15, pushing one end of the locking block 15 to be stuck in the locking groove 14 of the side wall of the connecting head 3, thereby realizing rapid installation of the core drill bit. When disassembling, it is only necessary to pull the locking block 15 through the pull rod 2 to realize rapid unlocking and disassembly. By changing the traditional drill bit threaded connector to a connecting sleeve 4 and the connecting head 3 for clamping through the locking block 15, convenient and quick disassembly and assembly can be achieved.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coring device for a drilling rig, comprising a coring barrel drill bit (1), characterized in that: A connecting sleeve (4) is fixed on the top of the core barrel drill bit (1), a connecting head (3) is arranged on the inner side of the connecting sleeve (4), a locking groove (14) is opened on the side wall of the connecting head (3), a side seat (5) is fixed on the side wall of the connecting sleeve (4) by inlaying, a locking block (15) is connected to the inside of the side seat (5) by sliding, one end of the locking block (15) is placed in the locking groove (14), and the other end of the locking block (15) is provided with a top spring (11), a pull rod (2) passes through the surface of the side seat (5), and one end of the pull rod (2) is connected to the surface of the locking block (15).

2. A coring device for a drilling rig according to claim 1, characterized in that: A central groove (13) is provided at the center of the bottom surface of the connector (3), a central column (8) is provided inside the central groove (13), and one end of the central column (8) is fixed on the inner end surface of the connector sleeve (4).

3. A coring device for a drilling rig according to claim 2, characterized in that: The cross sections of the central column (8) and the central groove (13) are both rectangular structures, and the central column (8) and the central groove (13) are connected by clearance fit.

4. A coring device for a drilling rig according to claim 1, characterized in that: The bottom surface of the locking block (15) is provided with an anti-slip groove (9), the inner side of the anti-slip groove (9) is provided with an anti-slip block (10), and the anti-slip block (10) is fixed on the inner wall of the side seat (5).

5. A coring device for a drilling rig according to claim 4, characterized in that: The end surface of the locking block (15) is provided with a ball groove, and a ball (12) is embedded in the ball groove.

6. A coring device for a drilling rig according to claim 1, characterized in that: A guide column (7) is arranged on the inner side of the top spring (11), a guide cylinder (6) is sleeved on the outer wall of the guide column (7), the guide cylinder (6) is connected to the inner wall of the side seat (5), and the guide column (7) is connected to the surface of the locking block (15).

7. A coring device for a drilling rig according to claim 1, characterized in that: The longitudinal section of the connecting head (3) is a T-shaped structure, and the cross sections of both the connecting head (3) and the connecting sleeve (4) are circular structures.

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