Self-centering tube rod clamping device adapted to multiple specifications

Abstract

The application provides a self-centering pipe rod clamping device suitable for multiple specifications, which comprises a mounting seat, a movable clamping assembly, the movable clamping assembly comprising a first clamping assembly, a second clamping assembly and a third clamping assembly, the first clamping assembly, the second clamping assembly and the third clamping assembly sliding on the mounting seat, and a driving assembly, the driving assembly being rotationally connected with the movable clamping assembly, and the first clamping assembly, the second clamping assembly and the third clamping assembly automatically positioning the axial center of a pipe rod placed between the movable clamping assembly during movement. The first clamping assembly and the third clamping assembly provided by the application move towards the second clamping assembly to form a ring-shaped surrounding clamping on the pipe rod, and the three components are matched to clamp pipe rods of multiple diameters, so that the axial center line of the pipe rod coincides with the center line of the first clamping assembly, the second clamping assembly and the third clamping assembly, and the purpose of axial center positioning of the pipe rod is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of pipe clamping tools, and particularly relates to a self-centering pipe clamping device that is adaptable to multiple specifications. Background Technology

[0002] Oilfield well workover operations require the pulling up or pulling down of sucker rods or tubing. Precise positioning and clamping of the rods and tubing are crucial components. However, existing clamping devices can only accommodate sucker rods and tubing of a single diameter. To clamp sucker rods and tubing of different diameters, multiple sizes of dies must be carried at once, and different models of dies must be changed to accommodate different diameters. This results in low automation, high manual labor intensity, low work efficiency, and certain risks in the on-site working environment, impacting the safety of oilfield operations.

[0003] Existing pipe clamping devices have also been improved to accommodate changes in pipe diameter, but the diameter of the clamped pipe cannot vary too much. In particular, the diameters of tubing and sucker rods are very different. Therefore, these mechanical grippers must change their jaws and jaws to grip sucker rods after gripping tubing, which is not convenient to use. Summary of the Invention

[0004] This invention provides a self-centering pipe clamping device that can adapt to multiple specifications, aiming to solve the problem of insufficient convenience in replacing the die jaws when the current pipe clamping device adapts to changes in pipe diameter.

[0005] This invention is implemented as follows: a self-centering tube clamping device adaptable to multiple specifications, comprising:

[0006] Mounting base, the mounting base including an upper fixing plate and a lower fixing plate;

[0007] A fixing clamping assembly is disposed above the upper fixing plate;

[0008] A movable clamping assembly, comprising a first clamping assembly, a second clamping assembly, and a third clamping assembly, wherein the first clamping assembly, the second clamping assembly, and the third clamping assembly slide on an upper fixed plate;

[0009] A drive assembly is located below the upper fixed plate and is rotatably connected to the movable clamping assembly.

[0010] The driving component drives the first clamping component and the third clamping component to move in the same direction. The second clamping component moves in the opposite direction to the first clamping component and the third clamping component under the drive of the driving component. During the movement of the first clamping component, the second clamping component and the third clamping component, the tube shaft center placed between the fixed clamping component and the movable clamping component is automatically positioned.

[0011] Preferably, the first clamping assembly includes:

[0012] The first clamping seat slides within a slide rail provided on the upper fixed plate;

[0013] The first clamping block has its bottom connected to the top surface of the first clamping seat;

[0014] The first sliding rack is located between the upper fixed plate and the lower fixed plate, and the bottom of the first clamping seat is connected to the first sliding rack;

[0015] The first sliding rack is rotatably connected to the drive assembly, and the drive assembly drives the first sliding rack to move the first clamping block.

[0016] Preferably, the third clamping assembly includes:

[0017] The third clamping seat slides within a slide rail provided on the upper fixed plate;

[0018] The bottom of the third clamping block is connected to the top surface of the third clamping seat;

[0019] The third sliding rack is located between the upper fixed plate and the lower fixed plate, and the bottom of the third clamping seat is connected to the third sliding rack;

[0020] The third sliding rack is rotatably connected to the drive assembly, and the drive assembly drives the third sliding rack to move the third clamping block.

[0021] Preferably, the second clamping assembly includes:

[0022] The second sliding rack is located between the upper fixed plate and the lower fixed plate, and is rotatably connected to the drive assembly.

[0023] The second clamping seat slides within a slide rail provided on the fixed plate, and the bottom of the second clamping seat is connected to the top of the second sliding rack.

[0024] The second clamping block is connected to the top of the second clamping seat.

[0025] Preferably, the sliding direction of the second sliding rack is opposite to the movement direction of the first and third sliding racks, and the second clamping block moves towards the first clamping block under the action of the second sliding rack.

[0026] Preferably, the driving component includes:

[0027] Hydraulic unit;

[0028] A first drive wheel and a second drive wheel, wherein the first drive wheel is rotatably connected to a first sliding rack, and the second drive wheel is rotatably connected to a second sliding rack and a third sliding rack;

[0029] A main rack, which is rotatably connected to a first drive wheel and a second drive wheel;

[0030] The main rack has a connector at its end. The hydraulic unit pushes the main rack to move along the axial direction of the tube rod through the connector, causing the first sliding rack, the second sliding rack, and the third sliding rack to slide perpendicular to the main rack.

[0031] Preferably, the first clamping block and the third clamping block have the same structure;

[0032] Preferably, the second clamping block includes a front clamping block and a rear clamping block, and the front clamping block, the rear clamping block and the first clamping block have the same structure.

[0033] Preferably, the first clamping component and the third clamping component are disposed on both sides of the second clamping component.

[0034] Compared with the prior art, the embodiments of this application have the following main advantages:

[0035] 1. The self-centering pipe clamping device adapted to multiple specifications provided by the present invention drives the first clamping component, the second clamping component and the third clamping component to move through the driving component, and makes the first clamping component and the third clamping component move towards each other relative to the second clamping component to form a ring-shaped surrounding clamping of the pipe, and the three components work together to adapt to the clamping of pipes of multiple diameters.

[0036] 2. The self-centering pipe clamping device adapted to multiple specifications provided by the present invention forms a ring-shaped clamping of the pipe by moving the first clamping component and the third clamping component towards each other relative to the second clamping component, so that the axis of the pipe coincides with the center line of the ring clamping area of ​​the first clamping component, the second clamping component and the third clamping component, thereby achieving the purpose of positioning the pipe axis. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a self-centering tube clamping device adapted to multiple specifications provided by the present invention.

[0038] Figure 2 This is a top view of a self-centering tube clamping device adapted to multiple specifications provided by the present invention.

[0039] Figure 3 This is a schematic diagram of the movable clamping component and the driving component of a self-centering tube clamping device adapted to multiple specifications provided by the present invention.

[0040] Figure 4 This is a schematic diagram of the internal structure of a self-centering tube clamping device adapted to multiple specifications provided by the present invention.

[0041] Figure 5 This is a schematic diagram of the movable clamping component structure of a self-centering tube clamping device adapted to multiple specifications provided by the present invention.

[0042] Figure 6 This is a schematic diagram of the second clamping component structure of a self-centering tube clamping device adapted to multiple specifications provided by the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Mounting base; 110. Upper fixing plate; 120. Lower fixing plate;

[0045] 20. Fixing and clamping assembly;

[0046] 30. First clamping assembly; 31. First clamping block; 32. First clamping seat; 33. First sliding rack; 34. First limiting block;

[0047] 40. Second clamping assembly; 41. Second clamping block; 411. Front clamping block; 412. Rear clamping block; 42. Second clamping seat; 43. Second sliding rack; 44. Second limiting block;

[0048] 50. Third clamping assembly; 51. Third clamping block; 52. Third clamping seat; 53. Third sliding rack; 54. Third limiting block;

[0049] 61. Hydraulic unit; 62. Connecting component; 63. Main rack; 64. First drive wheel; 65. Second drive wheel; 66. Limit block. Detailed Implementation

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0051] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] This invention provides a self-centering tube clamping device adaptable to multiple specifications, such as... Figures 1-6 As shown, the self-centering tube clamping device adaptable to multiple specifications includes:

[0053] Mounting base 10, the mounting base 10 includes an upper fixing plate 110 and a lower fixing plate 120;

[0054] A fixing clamping assembly 20 is disposed above the upper fixing plate 110;

[0055] The movable clamping assembly includes a first clamping assembly 30, a second clamping assembly 40, and a third clamping assembly 50, which slide on the upper fixed plate 110.

[0056] A drive assembly is located below the upper fixed plate 110 and is rotatably connected to the movable clamping assembly.

[0057] The driving component drives the first clamping component 30 and the third clamping component 50 to move in the same direction. The second clamping component 40 moves in the opposite direction to the first clamping component 30 and the third clamping component 50 under the drive of the driving component. During the movement of the first clamping component 30, the second clamping component 40 and the third clamping component 50, the tube shaft center placed between the fixed clamping component 20 and the movable clamping component is automatically positioned.

[0058] In this embodiment, the mounting base 10 mainly provides a fixing platform for the fixed clamping assembly 20 and the movable clamping assembly. The mounting base 10 can also be assembled onto other equipment to assist in the positioning of the pipe shaft. The fixed clamping assembly 20 serves as a guide assembly, accommodating the pipe shaft within the movable clamping assembly. The driving assembly serves as a power structure, primarily composed of a hydraulic unit 61 and a transmission module. The hydraulic unit 61 is a hydraulic push rod structure found in the prior art, providing reciprocating linear driving force to the transmission module. The transmission module is rotatably connected to the first clamping assembly 30, the second clamping assembly 40, and the third clamping assembly 50, driving them to move. The transmission module is arranged between the upper fixing plate 110 and the lower fixing plate 120.

[0059] In this embodiment, the first clamping component 30 and the third clamping component 50 move in the same direction under the drive of the driving component, while the second clamping component 40 moves in the opposite direction to the first clamping component 30 and the third clamping component 50 under the drive of the driving component. When the tube is placed in the movable clamping component, the first clamping component 30 and the third clamping component 50 move towards each other relative to the second clamping component 40, thereby achieving the function of fixing and clamping the tube. Under the mutual pushing of the first clamping component 30, the second clamping component 40 and the third clamping component 50, the tube will be pushed to the center of the three clamping components, thus completing the purpose of positioning the tube axis. The first clamping component 30, the second clamping component 40 and the third clamping component 50 adapt to tubes of different diameters by moving and cooperating with each other, and use their mutual cooperation to push the tube axis to the center of the three.

[0060] As a preferred embodiment of this example, Figures 3-5 As shown, the first clamping assembly 30 includes:

[0061] The first clamping seat 32 slides within a slide rail provided on the upper fixing plate 110;

[0062] The bottom of the first clamping block 31 is connected to the top surface of the first clamping seat 32;

[0063] The first sliding rack 33 is located between the upper fixed plate 110 and the lower fixed plate 120, and the bottom of the first clamping seat 32 is connected to the first sliding rack 33.

[0064] The first sliding rack 33 is rotatably connected to the drive assembly, and the drive assembly drives the first sliding rack 33 to move the first clamping block 31 on the upper fixed plate 110.

[0065] In this embodiment, the first clamping block 31 adopts an L-shaped structure, and the semi-enclosed area formed by the L-shaped structure is connected to the tube rod in contact, increasing the contact points of the first clamping block 31, which facilitates the fixed clamping of tube rods of different diameters; the upper fixing plate 110 is also provided with a first limiting block 34, and the first sliding rack 33 slides on the first limiting block 34, and the first limiting block 34 restricts the movement direction of the first sliding rack 33;

[0066] As a preferred embodiment of this example, Figures 3-5 As shown, the third clamping assembly 50 includes:

[0067] The third clamping seat 52 slides within a slide rail provided on the upper fixing plate 110;

[0068] The bottom of the third clamping block 51 is connected to the top surface of the third clamping seat 52;

[0069] The third sliding rack 53 is located between the upper fixed plate 110 and the lower fixed plate 120, and the bottom of the third clamping seat 52 is connected to the third sliding rack 53.

[0070] The third sliding rack 53 is rotatably connected to the drive assembly, and the drive assembly drives the third sliding rack 53 to move the third clamping block 51 on the upper fixed plate 110.

[0071] In this embodiment, the third clamping block 51 adopts the same structure as the first clamping block 31. The third clamping block 51 and the first clamping block 31 move in the same direction to provide a unilateral fixing clamping force to the tube rod placed on the movable clamping assembly. The upper fixing plate 110 is also provided with a third limiting block 54. The third sliding rack 53 slides on the third limiting block 54. The third limiting block 54 restricts the movement direction of the third sliding rack 53.

[0072] As a preferred embodiment of this example, Figures 3-6 As shown, the second clamping assembly 40 includes:

[0073] The second sliding rack 43 is located between the upper fixed plate 110 and the lower fixed plate 120, and the second sliding rack 43 is rotatably connected to the drive assembly.

[0074] The second clamping seat 42 slides in the slide rail provided on the fixed plate 110, and the bottom of the second clamping seat 42 is connected to the top of the second sliding rack 43.

[0075] The second clamping block 41 is connected to the top of the second clamping seat 42;

[0076] The sliding direction of the second sliding rack 43 is opposite to the movement direction of the first sliding rack 33 and the third sliding rack 53. Under the action of the second sliding rack 43, the second clamping block 41 moves towards the first clamping block 31.

[0077] In this embodiment, the second clamping block 41 includes a front clamping block 411 and a rear clamping block 412. The front clamping block 411, the rear clamping block 412 and the first clamping block 31 have the same structure. The installation directions of the front clamping block 411 and the rear clamping block 412 are opposite to the installation direction of the first clamping block 31. Both the front clamping block 411 and the rear clamping block 412 are fixed on the second clamping seat 42. The second clamping block 41 utilizes a dual structure to enhance the fixing effect during the fixing process. The first clamping component 30 and the third clamping component 50 are respectively disposed on both sides of the second clamping component 40, while the first clamping component 30 and the third clamping component 50 move towards each other relative to the second clamping component 40. When the second clamping component 40, the first clamping component 30 and the third clamping component 50 clamp the tube rod, the second clamping component 40 contacts the middle section of the tube rod, while the first clamping component 30 and the third clamping component 50 contact the two ends of the tube rod respectively, forming a multi-point fixation on the outside of the tube rod, thus completing the fixation of the tube rod.

[0078] The front clamping block 411, rear clamping block 412, first clamping block 31, and third clamping block 51 have the same structure. The first clamping block 31 and third clamping block 51 are arranged in the same direction, while the front clamping block 411 and rear clamping block 412 are installed in the opposite direction to the first clamping block 31. The four of them form a square ring clamping area. When the pipe rod is clamped, the pipe rod will be pushed by the front clamping block 411, rear clamping block 412, first clamping block 31, and third clamping block 51 to make the axis of the pipe rod coincide with the center line of the ring clamping area, thereby achieving the purpose of positioning.

[0079] In a preferred embodiment of this invention, the transmission module includes:

[0080] A first drive wheel 64 and a second drive wheel 65, wherein the first drive wheel 64 is rotatably connected to the first sliding rack 33, and the second drive wheel 65 is rotatably connected to the second sliding rack 43 and the third sliding rack 53;

[0081] Main rack 63, which is rotatably connected to the first drive wheel 64 and the second drive wheel 65;

[0082] The main rack 63 is provided with a connector 62 at its end. The hydraulic unit 61 pushes the main rack 63 to move along the axial direction of the tube rod through the connector 62, thereby causing the first sliding rack 33, the second sliding rack 43 and the third sliding rack 53 to slide perpendicularly to the main rack 63.

[0083] In this embodiment, the main rack 63 is mounted on a limiting block 66 provided on the upper fixing plate 110. The limiting block 66 restricts the movement direction of the main rack 63. The hydraulic unit 61 is connected to the main rack 63 through a connector 62. The main rack 63 moves along with the hydraulic unit 61, pushing the first sliding rack 33, the second sliding rack 43 and the third sliding rack 53 to move.

[0084] The second sliding rack 43 and the third sliding rack 53 are arranged in different directions on the second drive wheel 65. When the second drive wheel 65 rotates, the second sliding rack 43 and the third sliding rack 53 will move towards each other. The first sliding rack 33 is arranged on the side of the first drive wheel 64 away from the hydraulic unit 61, and the third sliding rack 53 is also arranged on the side of the second drive wheel 65 away from the hydraulic unit 61. The first sliding rack 33 and the third sliding rack 53 move in the same direction. Ultimately, the movement direction of the first clamping assembly 30 and the third clamping assembly 50 is opposite to the movement direction of the second clamping assembly 40, thus achieving the purpose of clamping the tube rod.

[0085] As a preferred embodiment of this example, the first clamping seat 32, the second clamping seat 42 and the third clamping seat 52 adopt a slider structure and can move along the slide rail preset on the upper fixed plate 110.

[0086] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0087] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A self-centering tube clamping device adaptable to multiple specifications, characterized in that, include: Mounting base, the mounting base including an upper fixing plate and a lower fixing plate; A fixing clamping assembly is disposed above the upper fixing plate; A movable clamping assembly, comprising a first clamping assembly, a second clamping assembly, and a third clamping assembly, wherein the first clamping assembly, the second clamping assembly, and the third clamping assembly slide on an upper fixed plate; A drive assembly is located below the upper fixed plate and is rotatably connected to the movable clamping assembly. The driving component drives the first clamping component and the third clamping component to move in the same direction. The second clamping component moves in the opposite direction to the first clamping component and the third clamping component under the drive of the driving component. During the movement of the first clamping component, the second clamping component and the third clamping component, the tube shaft center placed between the fixed clamping component and the movable clamping component is automatically positioned. The first clamping assembly includes: a first clamping seat, a first clamping block, and a first sliding rack; the first clamping seat slides within a slide rail provided on the upper fixed plate, the bottom of the first clamping block is connected to the top surface of the first clamping seat, the first sliding rack is located between the upper fixed plate and the lower fixed plate, and the bottom of the first clamping seat is connected to the first sliding rack, wherein the first sliding rack is rotatably connected to a driving assembly, and the driving assembly drives the first sliding rack to move the first clamping block; The second clamping assembly includes: a second sliding rack, a second clamping seat, and a second clamping block; the second sliding rack is located between the upper fixed plate and the lower fixed plate, the second sliding rack is rotatably connected to the drive assembly, the second clamping seat slides in a slide rail provided on the upper fixed plate, the bottom of the second clamping seat is connected to the top of the second sliding rack, and the second clamping block is connected to the top of the second clamping seat; The third clamping assembly includes: a third clamping seat, a third clamping block, and a third sliding rack. The third clamping seat slides within a slide rail provided on the upper fixed plate. The bottom of the third clamping block is connected to the top surface of the third clamping seat. The third sliding rack is located between the upper fixed plate and the lower fixed plate. The bottom of the third clamping seat is connected to the third sliding rack. The third sliding rack is rotatably connected to a driving assembly, and the driving assembly drives the third sliding rack to move the third clamping block.

2. The self-centering tube clamping device adaptable to multiple specifications as described in claim 1, characterized in that, The sliding direction of the second sliding rack is opposite to the movement direction of the first and third sliding racks. Driven by the second sliding rack, the second clamping block moves towards the first clamping block.

3. The self-centering tube clamping device adaptable to multiple specifications as described in claim 2, characterized in that, The driving component includes: Hydraulic unit; A first drive wheel and a second drive wheel, wherein the first drive wheel is rotatably connected to a first sliding rack, and the second drive wheel is rotatably connected to a second sliding rack and a third sliding rack; A main rack, which is rotatably connected to a first drive wheel and a second drive wheel; The main rack has a connector at its end. The hydraulic unit pushes the main rack to move along the axial direction of the tube rod through the connector. The main rack drives the first sliding rack, the second sliding rack, and the third sliding rack to slide perpendicular to the direction of movement of the main rack.

4. The self-centering tube clamping device adaptable to multiple specifications as described in claim 3, characterized in that, The first clamping block and the third clamping block have the same structure.

5. The self-centering tube clamping device adaptable to multiple specifications as described in claim 4, characterized in that, The second clamping block includes a front clamping block and a rear clamping block, and the front clamping block, the rear clamping block and the first clamping block have the same structure.

6. The self-centering tube clamping device adaptable to multiple specifications as described in claim 1, characterized in that, The first clamping component and the third clamping component are respectively disposed on both sides of the second clamping component.

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