Diameter self-adaptive clamp mechanism

Abstract

The utility model discloses a diameter self-adaptive clamp mechanism, which relates to the technical field of oil and gas drilling equipment, and comprises a clamping seat and an air cylinder, and further comprises clamp assemblies and hinging pieces, one end of the clamping seat is provided with the two clamp assemblies, and each clamp assembly is respectively connected with the air cylinder through the hinging piece; each clamp assembly comprises two clamp bodies, one end of each clamp body is hinged to the clamping seat, and a mounting groove is formed in one side of the other end of each clamp body; the two positioning plates are arranged on the two sides in the mounting groove; a plurality of clamp tooth seats are arranged between the two positioning plates, and the clamp tooth seats are rotationally connected with the positioning plates through positioning pins; and the clamp tooth plate is arranged on the clamp tooth seat. The clamp tooth seat drives the clamp tooth plate to rotate, when a pipe column is clamped, the clamp tooth plate can rotate to be attached to the outer wall of the pipe column all the time, pipe columns of different sizes can be stably clamped, lubricating oil can be injected into the clamp tooth seat through the arrangement of the groove plate and the oil cup, and rotation of the clamp tooth seat is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas drilling equipment, in particular to a diameter adaptive clamping mechanism. Background Art

[0002] In traditional drilling rig tubular handling, a catwalk transports the tubular to the drill floor, where it is grabbed by a gripping device and handed over to a splicing device for splicing. The device then transfers the tubular to a second-floor tubular stacker for stacking. This process requires numerous pieces of equipment and numerous operators. Traditional tubular handling involves gripping the tubular directly with a clamp. This clamp consists of two clamps connected by an articulated mechanism. A pneumatic cylinder drives the hinged mechanism, tightening or loosening the clamps to achieve the gripping action.

[0003] However, the clamps in the prior art can only grasp pipes of a specified size. When the diameter of the pipe changes, it is difficult to achieve stable clamping of the pipe. Utility Model Content

[0004] The purpose of the utility model is to provide a diameter-adaptive clamping mechanism for solving the above-mentioned technical problems.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A diameter-adaptive clamp mechanism comprises a clamping seat and a cylinder disposed inside the clamping seat, a clamp assembly and a hinge, wherein two clamp assemblies are disposed at one end of the clamping seat, and each clamp assembly is connected to one of the cylinders via one of the hinges;

[0007] Each of the clamp assemblies comprises:

[0008] Two clamping pliers bodies, one end of each clamping pliers body is hinged to the clamping seat, and one side of the other end of each clamping pliers body is provided with a mounting groove;

[0009] Positioning plates, two positioning plates are provided on both sides of the mounting groove;

[0010] A plurality of clamp tooth seats are provided between the two positioning plates, and the clamp tooth seats are rotatably connected to the positioning plates through positioning pins;

[0011] A jaw plate is provided on the jaw seat.

[0012] Preferably, the plurality of pliers tooth seats are distributed in an arc shape.

[0013] Preferably, a groove plate is further included, and a plurality of the groove plates are provided between the two positioning plates. Each of the jaw seats is opposite to a groove plate, and the groove plates are located on the side of the jaw seat away from the jaw plate.

[0014] As a further preference, it further includes a first bolt, and the groove plate is connected to the clamping clamp body via the first bolt.

[0015] Preferably, a second bolt is further included, and each positioning plate is connected to the clamp body via the second bolt.

[0016] As a further preference, it also includes an oil cup, a groove is opened on the other side of the other end of the clamping clamp body, an oil hole is opened on the inner wall of the groove, the oil hole is connected to the groove plate, and the oil cup is provided at the oil hole.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] In the utility model, the jaw seat drives the jaw plate to rotate, and when clamping the pipe string, the jaw plate can be rotated to always fit the outer wall of the pipe string, and pipe strings of different sizes can be stably clamped. Moreover, through the arrangement of the groove plate and the oil cup, lubricating oil can be injected into the jaw seat, which facilitates the rotation of the jaw seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the medium diameter adaptive clamping mechanism of the utility model;

[0020] Figure 2 It is a front cross-sectional view of the medium diameter adaptive clamping mechanism of the utility model;

[0021] Figure 3 It is a top sectional view of the medium diameter adaptive clamping mechanism of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the clamping pliers body in the utility model;

[0023] Figure 5 yes Figure 4 Cross-sectional view along the AA axis;

[0024] Figure 6 yes Figure 5 Cross-sectional view along the BB direction;

[0025] Figure 7 It is a three-dimensional diagram of the clamping pliers body in the utility model.

[0026] In the figure: 1. Clamping seat; 2. Cylinder; 3. Hinge; 4. Clamp assembly; 401. Clamping clamp body; 402. Positioning plate; 403. Clamp tooth seat; 404. Positioning pin; 405. Clamp tooth plate; 406. Groove plate; 407. First bolt; 408. Second bolt; 409. Oil cup; 410. Oil hole. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like are used to indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and to simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] Figure 1 It is a three-dimensional diagram of the medium diameter adaptive clamping mechanism of the utility model; Figure 2 It is a front cross-sectional view of the medium diameter adaptive clamping mechanism of the utility model; Figure 3 It is a top sectional view of the medium diameter adaptive clamping mechanism of the utility model; Figure 4 This is a schematic structural diagram of the clamping pliers body in the utility model; Figure 5 yes Figure 4 Cross-sectional view along the AA axis; Figure 6 yes Figure 5 Cross-sectional view along the BB direction; Figure 7 This is a three-dimensional diagram of the clamping pliers body in the utility model, please see Figures 1 to 7FIG. 1 shows a preferred embodiment, which shows a diameter adaptive clamping mechanism, comprising a clamping seat 1 and a cylinder 2 disposed inside the clamping seat 1, a clamping assembly 4 and a hinge 3. Two clamping assemblies 4 are provided at one end of the clamping seat 1, and each clamping assembly 4 is connected to a cylinder 2 via a hinge 3. In this embodiment, see Figure 2 As shown, the output end of the cylinder 2 is rotatably connected to the hinge 3, and the cylinder 2 drives the hinge 3 to drive the clamp assembly 4 to tighten or loosen, thereby achieving the clamping action of the pipe string.

[0031] Each clamp assembly 4 includes:

[0032] Two clamping clamp bodies 401, one end of the clamping clamp body 401 is hinged to the clamping seat 1, and one side of the other end of the clamping clamp body 401 is provided with a mounting groove;

[0033] Positioning plates 402, two positioning plates 402 are provided on both sides of the mounting groove; the provided positioning plates 402 are used to install the clamp tooth seat 403, and the distance between the two positioning plates 402 can be adjusted as needed.

[0034] The jaw base 403 is provided with several jaw bases 403 between the two positioning plates 402. The jaw base 403 is rotatably connected to the positioning plate 402 via a positioning pin 404. The jaw base 403 is used to mount the jaw plates 405. The two ends of the jaw base 403 are connected to the positioning holes on the two positioning plates 402 via two positioning pins 404, so that the jaw base 403 can rotate between the two positioning plates 402. The rotation angle of the jaw base 403 can be 10 to 15 degrees, which can be set according to specific needs. Each jaw base 403 can be provided with several jaw plates 405, and each jaw plate 405 is provided with several anti-slip protrusions. Figure 5 As shown, an arc-shaped guide hole is provided at the end of the clamp tooth seat 403, and one end of the positioning pin 404 is provided in the guide hole and can slide in the guide hole.

[0035] The jaw plate 405 is provided on the jaw seat 403. Figure 1 and Figure 3As shown, one end of the clamping clamp body 401 is rotatably connected to one end of the clamping seat 1 through a rotating shaft, which facilitates the rotation of the clamping clamp body 401, and the hinge 3 includes two hinge seats, which are connected by a rotating shaft, and each hinge seat is rotatably connected to a clamping clamp body 401. The position where the two hinge seats are connected to each other is rotatably connected to the output end of the cylinder 2. The extension of the piston rod of the cylinder 2 can push the two hinge seats to drive the two clamping clamp bodies 401 to move closer to each other, thereby clamping the pipe column. When clamping the pipe column, the jaw plate 405 will first contact the outer wall of the pipe column, and the outer wall of the pipe column will support the jaw plate 405, so that the jaw plate 405 pushes the jaw seat 403 to rotate, so that the jaw plate 405 can always clamp the outer wall of the pipe column, and the jaw plate 405 is provided with a number of anti-slip protrusions, which can play an anti-slip effect. When the piston rod of the cylinder 2 contracts, the two hinged seats can be pulled back, so that the two hinged seats spread the two clamping clamp bodies 401 apart, so that the two clamping clamp bodies 401 move away from each other, achieving a loosening action.

[0036] Furthermore, as a preferred embodiment, the plurality of jaw seats 403 are distributed in an arc shape. Figure 7 As shown, a plurality of jaw seats 403 are distributed in an arc shape so as to adapt to the outer wall of the pipe string.

[0037] Furthermore, as a preferred embodiment, a groove plate 406 is further included. Several groove plates 406 are provided between the two positioning plates 402. Each jaw seat 403 is directly opposite to a groove plate 406, and the groove plates are located on the side of the jaw seat 403 away from the jaw plate 405. Among them, the groove plate 406 has a notch on the side facing the jaw seat 403 to facilitate the entry of lubricating oil. The jaw seat 403 faces the groove plate 406, so that the lubricating oil can contact the jaw seat 403, facilitating the lubrication of the jaw seat 403 and extending the service life of the jaw seat 403.

[0038] Furthermore, as a preferred embodiment, it further includes a first bolt 407, and the groove plate 406 is connected to the clamp body 401 through the first bolt 407. Figure 6 As shown, the first bolt 407 passes through the clamp body 401 and is connected to the groove plate 406 to fix the groove plate 406.

[0039] Furthermore, as a preferred embodiment, it further includes a second bolt 408, and each positioning plate 402 is connected to the clamp body 401 via the second bolt 408. Figure 7 As shown, second bolts 408 are provided on both sides of the clamping clamp body 401 . The second bolts 408 pass through the clamping clamp body 401 and are connected to the positioning plate 402 to fix the position of the positioning plate 402 .

[0040] Furthermore, as a preferred embodiment, an oil cup 409 is further included. A groove is provided on the other side of the other end of the clamp body 401. An oil hole 410 is provided on the inner wall of the groove. The oil hole 410 is connected to the groove plate 406. An oil cup 409 is provided at the oil hole 410. Figure 6 As shown, a groove is provided in the middle of the other side of the other end of the clamping clamp body 401, and the oil hole 410 on the inner wall of the groove is connected to the groove of the groove plate 406. An oil cup 409 is provided at the opening of the oil hole 410 to facilitate the injection of lubricating oil into the oil hole 410. The lubricating oil then enters the groove of the groove plate 406 through the oil hole 410 and then enters the clamp tooth seat 403, thereby achieving lubrication of the clamp tooth seat 403.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A diameter-adaptive clamping mechanism, comprising a clamping seat and a cylinder disposed inside the clamping seat, characterized in that: It also includes a clamp assembly and a hinge, one end of the clamping seat is provided with two clamp assemblies, and each clamp assembly is connected to one of the cylinders through one of the hinges; Each of the clamp assemblies comprises: Two clamping pliers bodies, one end of each clamping pliers body is hinged to the clamping seat, and one side of the other end of each clamping pliers body is provided with a mounting groove; Positioning plates, two positioning plates are provided on both sides of the mounting groove; A plurality of clamp tooth seats are provided between the two positioning plates, and the clamp tooth seats are rotatably connected to the positioning plates through positioning pins; A jaw plate, the jaw seat is provided with the jaw plate; It also includes a groove plate, wherein a plurality of the groove plates are provided between the two positioning plates, each of the jaw seats is respectively opposite to a groove plate, and the groove plates are located on a side of the jaw seat away from the jaw plate; It also includes an oil cup. A groove is provided on the other side of the other end of the clamp body. An oil hole is provided on the inner wall of the groove. The oil hole is connected to the groove plate, and the oil cup is provided at the oil hole.

2. The diameter adaptive clamping mechanism according to claim 1, characterized in that: The plurality of pliers tooth seats are distributed in an arc shape.

3. The diameter adaptive clamping mechanism according to claim 1, wherein: The invention also includes a first bolt, through which the groove plate is connected to the clamp body.

4. The diameter adaptive clamping mechanism according to claim 1, wherein: It also includes a second bolt, and each positioning plate is connected to the clamp body through the second bolt.

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