A clamping device for a drill rod

Abstract

The utility model discloses a kind of clamping devices for drill rod, it is related to drill rod clamping equipment technical field, including riser, the surface of the riser is equidistantly provided with multiple cross plates;The surface of the cross plate is symmetrically provided with recess, and the inside of recess is rotatably connected with screw rod, and the surface of screw rod is respectively threadedly connected with moving block. In the utility model, multiple cross plates are equidistantly provided on the riser, and the inside of cross plate is provided with screw rod, moving block, arc plate and roller etc., so as to clamp drill rod, the torque and axial force transmitted by drill rod are shared by multiple clamping devices, avoid single clamping point from damaging due to stress concentration, prolong the life of equipment, recess is provided with mounting groove on the inner wall of the surface of cross plate, and rotating tube, clock spring and dust cloth etc. are provided in the inside of mounting groove, the surface of recess can be shielded, avoid dust and other impurities in the outside adhere to the surface of screw rod, affect the movement of moving block on the surface of screw rod.

Description

Technical Field

[0001] This utility model relates to the technical field of drill pipe clamping equipment, and in particular to a clamping device for drill pipes. Background Technology

[0002] A drill pipe clamping device is a mechanical device specifically designed for drilling operations. Its core function is to fix, support, or control the movement of the drill pipe through mechanical or hydraulic means, ensuring the stability, safety, and efficiency of the drill pipe during drilling, unloading, splicing, or pulling operations. Current drill pipe clamping devices typically employ single-point clamping. However, single-point clamping must withstand the entire torque and axial force, which can easily lead to premature wear or failure of the clamping device, increasing maintenance costs. Utility Model Content

[0003] This invention provides a clamping device for drill pipes, which solves the problems in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A clamping device for drill rods includes a vertical plate, on the surface of which a plurality of horizontal plates are equidistantly arranged;

[0006] The surface of the horizontal plate is symmetrically provided with grooves, and a screw is rotatably connected inside the groove. The two sides of the surface of the screw are respectively threaded with movable blocks, and the surface of the movable blocks is connected with an arc plate. A roller is installed on one side of the arc plate.

[0007] The screw passes through the cross plate and is connected to a worm gear, and a worm is connected to the surface of the worm gear.

[0008] As a further description of the above technical solution:

[0009] The threads on both sides of the screw surface are arranged in opposite directions.

[0010] As a further description of the above technical solution:

[0011] The movable block is slidably connected to the inner wall of the groove.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the groove is provided with mounting slots on both sides, and the inner wall of the mounting slot is rotatably connected to a rotating tube, and the surface of the rotating tube is wrapped with a dustproof cloth connected to the moving block.

[0014] As a further description of the above technical solution:

[0015] A protective cover is provided on one side of the horizontal plate, which is rotatably connected to the worm gear.

[0016] As a further description of the above technical solution:

[0017] The rotating tube is equipped with a spring and a fixing rod inside.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] In this invention, multiple horizontal plates are equidistantly arranged on a vertical plate. The interior of each horizontal plate contains a screw, a moving block, an arc plate, and rollers to facilitate clamping of the drill rod. Multiple clamping devices share the torque and axial force transmitted by the drill rod, preventing damage to a single clamping point due to stress concentration and extending the equipment's lifespan. Simultaneously, an installation groove is formed on the inner wall of a groove on the surface of the horizontal plate. The installation groove contains a rotating tube, a spring, and a dustproof cloth, which shields the surface of the groove, preventing external dust and other impurities from adhering to the surface of the screw and affecting the movement of the moving block on the screw surface. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a clamping device for drill pipes;

[0021] Figure 2 This is a schematic diagram of the internal structure of the horizontal plate in this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the rotating tube in this utility model.

[0023] Legend:

[0024] 1. Vertical plate; 2. Horizontal plate; 3. Groove; 4. Screw; 5. Moving block; 6. Arc plate; 7. Roller; 8. Worm gear; 9. Worm; 10. Mounting groove; 11. Rotating tube; 12. Dustproof cloth; 13. Protective cover; 14. Clockwork spring; 15. Fixing rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3A clamping device for drill rods includes a vertical plate 1, with multiple horizontal plates 2 evenly spaced on the surface of the vertical plate 1. Grooves 3 are symmetrically formed on the surface of the horizontal plates 2, and a screw 4 is rotatably connected inside the groove 3. Moving blocks 5 are threadedly connected to both sides of the surface of the screw 4, and an arc-shaped plate 6 is connected to the surface of the moving blocks 5. A roller 7 is installed on one side of the arc-shaped plate 6. A worm gear 8 is connected to the screw 4 through the horizontal plates 2, and a worm 9 is connected to the surface of the worm gear 8. The rotation of the worm 9 allows the worm gear 8 to drive the screw 4 to rotate, thereby causing the moving blocks 5 on both sides of the screw 4 to move the arc-shaped plate 6 and the roller 7. The drill rod can be clamped by the arc-shaped plate 6 and the roller 7 on both sides. When the moving blocks 5 move, they can also retract a dustproof cloth 12 connected to one side, so that the surface of the groove 3 is covered by the dustproof cloth 12.

[0027] Furthermore, the threads on both sides of the screw 4 surface are arranged in opposite directions, which is to facilitate the simultaneous movement of the moving blocks 5 connected to the threads on both sides of the screw 4 surface in opposite directions or in opposite directions when the screw 4 rotates.

[0028] Furthermore, the movable block 5 is slidably connected to the inner wall of the groove 3, which facilitates the movement of the movable block 5, which is threaded on the surface of the screw 4, within the groove 3 when the screw 4 rotates.

[0029] Furthermore, mounting grooves 10 are respectively provided on both sides of the inner wall of the groove 3, and a rotating tube 11 is rotatably connected to the inner wall of the mounting groove 10. The surface of the rotating tube 11 is wrapped with a dustproof cloth 12 connected to the moving block 5. This is so that when the moving block 5 moves, the dustproof cloth 12 can be moved and retracted on the surface of the rotating tube 11, so as to cover the surface of the groove 3 through the dustproof cloth 12.

[0030] Furthermore, a protective cover 13 is provided on one side of the horizontal plate 2, which is rotatably connected to the worm 9. This is to facilitate the shielding of the worm 9 and the worm wheel 8 through the protective cover 13, so as to prevent external dust from adhering to their surface.

[0031] Furthermore, the rotating tube 11 is equipped with a spring 14 and a fixing rod 15 inside, which facilitates the reset of the rotating tube 11 by the spring 14, so that the dustproof cloth 12 can be retracted and extended by the rotating tube 11.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A clamping device for a drill rod, comprising a vertical plate (1), characterised in that: The surface of the vertical plate (1) is provided with multiple horizontal plates (2) at equal intervals; The surface of the horizontal plate (2) is symmetrically provided with grooves (3), and a screw (4) is rotatably connected inside the groove (3). Moving blocks (5) are threadedly connected to both sides of the surface of the screw (4), and an arc plate (6) is connected to the surface of the moving blocks (5), and a roller (7) is installed on one side of the arc plate (6). The screw (4) passes through the cross plate (2) and is connected to the worm wheel (8), and the surface of the worm wheel (8) is connected to the worm (9).

2. A gripping device for a drill rod as defined in claim 1, characterized in that: The threads on both sides of the surface of the screw (4) are arranged in opposite directions.

3. A gripping device for a drill rod as defined in claim 1, characterized in that: The movable block (5) is slidably connected to the inner wall of the groove (3).

4. A gripping device for a drill rod as defined in claim 1, characterized in that: The inner wall of the groove (3) is provided with mounting grooves (10) on both sides, and the inner wall of the mounting groove (10) is rotatably connected to a rotating tube (11), and the surface of the rotating tube (11) is wrapped with a dustproof cloth (12) connected to the moving block (5).

5. A gripping device for a drill rod as defined in claim 1, wherein: A protective cover (13) is provided on one side of the horizontal plate (2) and is rotatably connected to the worm (9).

6. A gripping device for a drill rod as defined in claim 4, characterized in that: The rotating tube (11) is equipped with a spring spring (14) and a fixing rod (15).

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