Connector for conversion connection of drilling tool

Abstract

The utility model relates to a connector for conversion connection of a drilling tool and belongs to drilling tool connectors. The connector comprises a conversion connector, a mounting block is fixed to the top of the conversion connector, a rotating ring is arranged below the conversion connector, the interior of the conversion connector is of a cavity structure, range adjusting assemblies are arranged in the cavity, and drill bits are clamped between the range adjusting assemblies. An annular limiting groove is formed in the bottom of the conversion connector, a limiting ring is slidably connected into the annular limiting groove, the bottom of the limiting ring is fixedly connected with a rotating ring, and the rotating ring is in threaded connection with the conversion connector. When the device is installed, the rotating ring is rotated to enable the push ring to move upwards and push the clamping blocks to get close to each other, the drill bit is clamped and fixed, and installation of the drill bit is completed; the clamping block has a large moving distance and can clamp drill bits with different diameters, and the frequency of replacing the adapter substitute is reduced; and due to the arrangement of the grooves, when the drill bit is clamped by the clamping blocks, the friction force between the clamping blocks and the drill bit can be increased, clamping is more stable, shaking is avoided, the situation that the drill bit slips during drilling is reduced, and the drilling effect is improved.

Description

Technical Field

[0001] The utility model belongs to a drill tool joint, and particularly relates to a joint for drill tool conversion connection. Background Art

[0002] During the oil and gas field exploitation process, a joint is needed to be installed at the output end of the drilling equipment for drilling operations. After retrieval, there is a Chinese patent with the publication number CN 218150792 U and the name of a joint for drill tool conversion connection. Although this utility model solves the problems that the existing joint cannot fix drill tools of different specifications, resulting in a small application range of the joint, and when replacing some drill tools with relatively large specifications, manual operation is required, with cumbersome operation steps and a large amount of manpower consumption. However, this joint clamps and fixes the drill tool through rollers, and this fixing method still has an unsatisfactory fixing effect and is prone to slipping. Another example is the Chinese patent with the publication number CN204326993U and the name of a directional drill tool conversion joint for drilling. The directional drill tool conversion joint of this utility model has a simple structure, is convenient for installation and disassembly, and greatly improves the downhole safety of the drill string. However, this joint tightens the small-sized drill tool and the joint with a large tong at the make-up part on the joint, and completes the connection with the large-sized drill tool below through the make-up part below. This connection method has a poor fixing effect, has a risk of shaking, and is prone to falling off. Summary of the Invention

[0003] The utility model provides a joint for drill tool conversion connection to solve the deficiencies of the prior art.

[0004] A joint for drill tool conversion connection of the utility model includes a conversion joint. A threaded installation block is fixedly connected to the top of the conversion joint. A swivel ring is arranged below the conversion joint. The interior of the conversion joint is a cavity structure. In the cavity, there are more than three range adjustment components arranged in a circumferential arrangement, and a drill bit is clamped between the range adjustment components. An annular limiting groove is opened at the bottom of the conversion joint, and a limiting ring is slidably connected in the annular limiting groove. The bottom of the limiting ring is fixedly connected to the swivel ring, and the inner side wall of the swivel ring is threadedly connected to the outer wall of the lower part of the conversion joint.

[0005] As a further improvement of the present utility model, the range adjustment assembly includes clamping blocks. A limiting chute and a stabilizing groove are circumferentially formed in the inner wall of the adapter. Both the limiting chute and the stabilizing groove correspond to the clamping blocks. A connecting rod is fixedly connected to the side of the clamping block away from the drill bit. The other end of the connecting rod extends into the limiting chute and a limiting block is fixed at its end. Protrusions are symmetrically fixedly connected to the limiting block. Square grooves are symmetrically formed in the inner wall of the limiting chute. The protrusions are placed in the square grooves and are slidably connected thereto. A spring is sleeved on the outer wall of the connecting rod in the limiting chute. One end of the spring is fixedly connected to the inner wall of the limiting chute and the other end is fixedly connected to the limiting block.

[0006] As a further improvement of the present utility model, a stabilizing rod is slidably connected in the stabilizing groove. The side of the stabilizing rod close to the clamping block is fixedly connected to the surface of the clamping block.

[0007] As a further improvement of the present utility model, a pushing ring is fixedly connected to the central position in the rotating ring. An inclined surface is provided on the upper part of the inner wall of the pushing ring and is adapted to the inclined surface on the outer side of the lower part of the clamping block.

[0008] As a further improvement of the present utility model, a groove is formed in the end face of the clamping block close to the drill bit.

[0009] A joint for drill tool conversion connection of the present utility model has a reasonable structural design. By providing a range adjustment assembly, when the drill bit is installed, the rotating ring is rotated clockwise, so that while the pushing ring moves upward, it pushes the clamping blocks closer to each other, making the clamping blocks close to the drill bit and clamping and fixing the drill bit to complete the installation of the drill bit. Since the clamping blocks have a large moving distance, various drill bits with different diameters can be clamped. In actual use, the number of times of replacing the adapter can be reduced, and the use cost is lowered. By providing a groove, when the clamping block approaches the drill bit and clamps it, the contact surface between the clamping block and the drill bit can be in a serrated shape, thereby increasing the friction between the clamping block and the drill bit, making the clamping more stable, preventing shaking, reducing the situation of the drill bit slipping during drilling, and improving the drilling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a structural schematic diagram of the present utility model;

[0011] Figure 2 is a structural sectional view of the present utility model;

[0012] Figure 3 is Figure 2 an enlarged view of part A in

[0013] Figure 4 is a structural schematic diagram of the range adjustment assembly of the present utility model;

[0014] Figure 5Schematic diagram of the clamping block structure of the present utility model;

[0015] Figure 6 Schematic diagram of the overall structure of the swivel ring of the present utility model. Specific embodiments

[0016] A joint for drill tool conversion connection of the present utility model includes a conversion joint 1. A threaded mounting block 11 is fixedly connected to the top of the conversion joint 1. A swivel ring 12 is arranged below the conversion joint 1. The interior of the conversion joint 1 is a cavity structure. In the cavity, more than three range adjustment components 13 arranged in a circumferential array are provided, and a drill bit 2 is clamped between the range adjustment components 13.

[0017] The range adjustment component 13 includes a clamping block 131. A limiting chute 15 and a stabilizing groove 16 are circumferentially formed on the inner wall of the conversion joint 1. The limiting chute 15 and the stabilizing groove 16 correspond to the clamping block 131 respectively. A connecting rod 132 is fixedly connected to the side of the clamping block 131 away from the drill bit 2. The other end of the connecting rod 132 extends into the limiting chute 15 and a limiting block 133 is fixed at its end. Protrusions 134 are symmetrically fixedly connected to the limiting block 133. Square grooves are symmetrically formed on the inner wall of the limiting chute 15. The protrusions 134 are placed in the square grooves and are slidably connected therewith. By the cooperation of the protrusions 134 and the square grooves, the clamping block 131 can be limited, avoiding the rotation of the clamping block 131 during movement, so that the clamping block 131 can move smoothly in a straight line. A spring 135 is sleeved on the outer wall of the connecting rod 132 in the limiting chute 15. One end of the spring 135 is fixedly connected to the inner wall of the limiting chute 15 and the other end is fixedly connected to the limiting block 133. When the swivel ring 12 is rotated counterclockwise, the push ring 122 moves downward, and the clamping block 131 will reset under the elastic action of the spring 135, thus moving away from the drill bit 2, and the fixation of the drill bit 2 can be released. A stabilizing rod 136 is slidably connected to the inner wall of the stabilizing groove 16. The side of the stabilizing rod 136 close to the clamping block 131 is fixedly connected to the surface of the clamping block 131. When the clamping block 131 moves, it will drive the stabilizing rod 136 to slide in the stabilizing groove 16, which can make the movement of the clamping block 131 more stable and have stronger rigidity. A groove 311 is formed on the end face of the clamping block 131 close to the drill bit 2. By providing the groove 311, the contact surface between the clamping block 131 and the drill bit 2 is in a sawtooth shape, thereby increasing the friction between the clamping block 131 and the drill bit 2, making the clamping more stable, reducing the slipping of the drill bit 2 during drilling, and improving the drilling effect.

[0018] An annular limiting groove 14 is formed at the bottom of the adapter 1. A limiting ring 121 is slidably connected in the annular limiting groove 14. The bottom of the limiting ring 121 is fixedly connected to the rotating ring 12. The inner side wall of the rotating ring 12 is threadedly connected to the outer wall of the lower part of the adapter 1. A plurality of protrusions are provided at intervals in the circumferential direction of the outer side wall of the rotating ring 12. When the rotating ring 12 is rotated, the friction between the hand and the rotating ring 12 can be increased, facilitating the screwing of the rotating ring 12 and preventing slipping; A pushing ring 122 is fixedly connected to the center position inside the rotating ring 12. An inclined surface is provided on the upper part of the inner wall of the pushing ring 122 and is adapted to the outer inclined surface of the lower part of the clamping block 131. When the rotating ring 12 is rotated clockwise, the pushing ring 122 moves upward, enabling each clamping block 131 to move towards the center simultaneously, and then the drill bit 2 is clamped; The limiting ring 121 can also be used to limit the moving distance of the rotating ring 12, and at the same time, it can prevent the rotating ring 12 from falling off.

[0019] When the utility model is in use, first, the adapter 1 is connected to the output end of the drilling equipment through the threaded mounting block 11. When the drill bit 2 needs to be installed, one end of the drill bit 2 is first inserted into the cavity of the adapter 1 so that the top end of the drill bit 2 contacts the top wall of the cavity. Subsequently, the rotating ring 12 is rotated clockwise, causing the rotating ring 12 to move upward, the pushing ring 122 to move upward, and pushing each clamping block 131 to move towards the center. During the movement of the clamping block 131, the connecting rod 132 will be driven to slide in the limiting chute 15, and the limiting block 133 will drive the convex block 134 to move together. At this time, the spring 135 is in a compressed state. When the clamping block 131 contacts the drill bit 2 and clamps it, stop rotating the rotating ring 12, and the installation of the drill bit 2 can be completed; Since the clamping block 131 has a large moving distance, it can clamp drill bits 2 of various different diameters, reducing the number of times of replacing the adapter 1 and also reducing the use cost; Since a groove 311 is formed on the side of the clamping block 131 close to the drill bit 2, the contact surface between the clamping block 131 and the drill bit 2 can be in a serrated shape, thereby increasing the friction between the clamping block 131 and the drill bit 2, making the clamping more stable, reducing the slipping of the drill bit 2 during drilling, and improving the drilling effect; When the drill bit 2 needs to be removed, rotate the rotating ring 12 counterclockwise to make the pushing ring 122 move downward. At this time, the clamping block 131 will reset under the elastic action of the spring 135, thus moving away from the drill bit 2, and the fixation of the drill bit 2 can be released, and the drill bit 2 can be taken out to complete the disassembly.

Claims

1. A connector for drill tool conversion connection, comprising a conversion connector (1), a threaded mounting block (11) is fixedly connected to the top of the conversion connector (1), and a swivel ring (12) is arranged below the conversion connector (1), characterized in that, The inside of the adapter (1) is a cavity structure. Inside the cavity, there are more than three range adjustment components (13) arranged circumferentially, and a drill bit (2) is clamped between the range adjustment components (13). An annular limit groove (14) is formed at the bottom of the adapter (1), and a limit ring (121) is slidably connected in the annular limit groove (14). The bottom of the limit ring (121) is fixedly connected to a swivel ring (12), and the inner wall of the swivel ring (12) is threadedly connected to the outer wall of the lower part of the adapter (1).

2. The adapter for drill tool conversion connection according to claim 1, characterized in that, The range adjustment component (13) includes a clamping block (131). A limit sliding groove (15) and a stabilizing groove (16) are formed circumferentially on the inner wall of the adapter (1). The limit sliding groove (15) and the stabilizing groove (16) correspond to the clamping block (131). A connecting rod (132) is fixedly connected to the side of the clamping block (131) away from the drill bit (2). The other end of the connecting rod (132) extends into the limit sliding groove (15) and a limit block (133) is fixed at its end. Protrusions (134) are symmetrically fixedly connected to the limit block (133). Square grooves are symmetrically formed on the inner wall of the limit sliding groove (15), and the protrusions (134) are placed in the square grooves and slidably connected thereto. A spring (135) is sleeved on the outer wall of the connecting rod (132) in the limit sliding groove (15). One end of the spring (135) is fixedly connected to the inner wall of the limit sliding groove (15), and the other end is fixedly connected to the limit block (133).

3. The joint for drill tool conversion connection according to claim 2, wherein, A stabilizing rod (136) is slidably connected in the stabilizing groove (16), and the side of the stabilizing rod (136) close to the clamping block (131) is fixedly connected to the surface of the clamping block (131).

4. The adapter for drill tool conversion connection according to claim 1, characterized in that, A push ring (122) is fixedly connected to the central position inside the swivel ring (12). The upper part of the inner wall of the push ring (122) is provided with an inclined surface that is adapted to the inclined surface on the outer side of the lower part of the clamping block (131).

5. The adapter for drill tool conversion connection according to claim 2, characterized in that, A groove (311) is formed on the end face of the clamping block (131) close to the drill bit (2).

Images