A clamp for casing coupling repair

Abstract

The application discloses a clamp for repairing a petroleum casing coupling, and belongs to the technical field of coupling repair, and has the technical scheme as follows: the clamp comprises a mounting plate, a clamping device, a driving assembly and a supporting assembly; the clamping device comprises a first clamping assembly and a second clamping assembly, and both are in sliding connection with the mounting plate and used for clamping a coupling; the first clamping assembly and the second clamping assembly are identical in structure and each comprises a fixing plate, a first clamping rod and a second clamping rod; the fixing plate is in sliding connection with the mounting plate; the first clamping rod and the second clamping rod are connected with the fixing plate; the first clamping rod and the second clamping rod are each connected with a clamping piece; the clamping piece is in abutment with the coupling; the driving assembly is connected with the mounting plate and connected with the first clamping assembly and the second clamping assembly and used for driving the first clamping assembly and the second clamping assembly to move; and the supporting assembly is connected with the mounting plate, inserted into the middle of the coupling and connected with the inner wall of the coupling, so that the petroleum casing coupling can be stably and reliably clamped and the maintenance operation is facilitated.

Description

Technical Field

[0001] This application relates to the field of coupling repair technology, and in particular to a clamp for repairing oil casing couplings. Background Technology

[0002] In the continuous progress of the oil extraction industry, the importance of oil casing couplings, as key components connecting casings, is becoming increasingly prominent. They not only ensure the sealing of oil pipelines, preventing oil leaks that could lead to resource waste and environmental pollution, but also enhance pipeline stability, ensuring the smooth operation of oil extraction. With the expansion of extraction scale and the increasing complexity of the extraction environment, the quality and performance requirements for oil casing couplings are constantly rising. During long-term use, oil casing couplings are inevitably affected by various factors, such as wear, corrosion, and deformation, thus affecting their normal function. Therefore, maintenance is particularly necessary. Effective maintenance techniques can extend the service life of casing couplings, reduce replacement costs, and improve the safety and economy of oil extraction.

[0003] In the maintenance of oil casing couplings, there are various traditional methods to effectively fix the couplings. Some companies use manual clamps, manually tightening nuts to ensure the clamp arms fit tightly against the coupling, thus achieving fixation. Other companies use pneumatic clamps, using compressed air to power the clamping mechanism and hold the coupling in place.

[0004] However, manual clamps are cumbersome to operate, requiring significant manpower and time. Furthermore, manual operation makes it difficult to guarantee consistent and stable clamping force, which can easily lead to loosening or displacement of the couplings during maintenance, affecting the repair outcome. While pneumatic clamps are relatively simple to operate, they are greatly affected by the pressure and stability of the air source. In environments with unstable air supply, they struggle to provide reliable clamping force. Utility Model Content

[0005] In order to stably and reliably clamp oil casing couplings and facilitate maintenance operations, this utility model provides a clamp for oil casing coupling maintenance.

[0006] The present invention provides a clamp for repairing oil casing couplings, which adopts the following technical solution: A clamp for repairing oil casing couplings, including a mounting plate; The clamping device includes a first clamping assembly and a second clamping assembly. Both the first clamping assembly and the second clamping assembly are slidably connected to the mounting plate for clamping the coupling. The first clamping assembly and the second clamping assembly have the same structure, each including a fixed plate, a first clamping rod, and a second clamping rod. The fixed plate is slidably connected to the mounting plate. Both the first clamping rod and the second clamping rod are connected to the fixed plate. Both the first clamping rod and the second clamping rod are connected to clamping members, and the clamping members abut against the coupling. A drive assembly is connected to the mounting plate; both the first clamping assembly and the second clamping assembly are connected to the drive assembly and are used to move the first clamping assembly and the second clamping assembly; and A support assembly is connected to the mounting plate, the support assembly being inserted from the middle of the coupling and connected to the inner wall of the coupling.

[0007] By adopting the above technical solution, during the repair of oil casing couplings, the drive assembly drives the first and second clamping assemblies to slide on the mounting plate, causing the clamping parts on the first and second clamping assemblies to abut against the coupling, thus achieving clamping of the coupling. This avoids the cumbersome operation of manual clamps and the difficulty in ensuring consistent and stable clamping force, improving clamping efficiency and stability. Simultaneously, the support assembly is inserted from the middle of the coupling and connected to the inner wall of the coupling, providing support for the coupling during repair, further preventing loosening or displacement of the coupling, and ensuring the repair effect. This also avoids the problem of pneumatic clamps being greatly affected by air source pressure and stability, providing reliable clamping force for the coupling in different environments, ensuring the smooth progress of repair work.

[0008] Preferably, the clamping member includes a clamping plate, a protrusion, a fixing ball, and a clamping block. The clamping plate corresponding to the first clamping rod is connected to the first clamping rod, and the clamping plate corresponding to the second clamping rod is connected to the second clamping rod. The protrusion, the fixing ball, and the clamping block form a fixing group, and multiple fixing groups are provided. The protrusion is connected to the clamping plate, the fixing ball is connected to the protrusion, and the clamping block is rotatably connected to the fixing ball.

[0009] By adopting the above technical solution, when the first clamping rod and the second clamping rod drive the clamping plate close to the coupling during use, multiple sets of fixing groups consisting of protrusions, fixed balls and clamping blocks come into contact with the coupling. Since the clamping blocks are rotatably connected to the fixed balls, the clamping blocks can automatically adjust their angle according to the shape of the coupling surface to better fit the coupling surface, thereby achieving more stable and reliable clamping.

[0010] Preferably, the clamping block is fixedly connected with an anti-slip pad, and the anti-slip pad abuts against the coupling.

[0011] By adopting the above technical solution, an anti-slip pad is set on the clamping block to abut against the coupling, which can increase the friction between the clamp and the coupling, making the clamp more stable and reliable when clamping the coupling, reducing the possibility of the coupling sliding or shifting during maintenance, and improving the accuracy and efficiency of maintenance operations.

[0012] Preferably, the clamping plate is connected to an adjustment assembly, which includes an adjustment screw and a rotating block. One end of the adjustment screw is connected to the rotating block. The adjustment screw corresponding to the first clamping rod passes through the first clamping rod and is threadedly connected to the first clamping rod. The adjustment screw corresponding to the second clamping rod passes through the second clamping rod and is threadedly connected to the second clamping rod. The adjustment screw is connected to the clamping plate.

[0013] By adopting the above technical solution, during use, the operator can rotate the rotating block to drive the adjusting screw to rotate. Since the adjusting screw is threadedly connected to the first clamping rod and the second clamping rod, the adjusting screw can move back and forth within the first clamping rod and the second clamping rod, thereby driving the clamping plate to move and realizing flexible adjustment of the clamping position.

[0014] Preferably, the drive assembly includes a motor, a bidirectional lead screw, a first slider, and a second slider. A groove is provided on the mounting plate, the bidirectional lead screw passes through the groove and is rotatably connected to the mounting plate, one end of the bidirectional lead screw is connected to the motor, the first slider and the second slider are both disposed in the groove and are threadedly connected to the bidirectional lead screw, the first slider is connected to the first clamping assembly, and the second slider is connected to the second clamping assembly.

[0015] By adopting the above technical solution, the motor drives the bidirectional lead screw to rotate. Since the first slider and the second slider are threadedly connected to the bidirectional lead screw and are located in the slide groove, the rotation of the bidirectional lead screw can cause the first slider and the second slider to move towards or away from each other in the slide groove, thereby driving the first clamping assembly and the second clamping assembly to move, realizing the clamping or loosening of the oil casing coupling. The operation is convenient and can stably drive the clamping assembly to move.

[0016] Preferably, the support assembly includes a support shaft, a first support block, and a second support block. The support shaft is fixedly connected to the mounting plate. A first groove and a second groove are provided on the support shaft. The first support block is disposed in the first groove and is slidably connected to the support shaft. The second support block is disposed in the second groove and is slidably connected to the support shaft. The support shaft is connected to a control assembly for adjusting the length of the first support block and the second support block extending out of the support shaft.

[0017] By adopting the above technical solution, the mounting plate provides a fixed foundation for the support shaft, which is inserted from the middle of the coupling. The first support block and the second support block slide in the first groove and the second groove respectively. The control component can adjust the length of the first support block and the second support block extending out of the support shaft, which enables the support component to adapt to couplings with different inner diameters, enhances the versatility of the clamp for couplings of different sizes, and can also support the coupling from the inside, making the coupling more stable during maintenance and improving maintenance quality.

[0018] Preferably, the control component includes a rotating rod, a first gear, a second gear, a third gear, a first screw, and a second screw. A cavity is formed within the support shaft. The rotating rod passes through the support shaft and the mounting plate, extending into the cavity. The first, second, and third gears are all located within the cavity. The first gear is connected to the rotating rod, and the second and third gears mesh with the first gear. One end of the first screw is connected to the second gear, and the other end passes through the support shaft and is threaded to the first support block. One end of the second screw is connected to the third gear, and the other end passes through the support shaft and is threaded to the second support block. Both the first and second screws are rotatably connected to the support shaft.

[0019] By adopting the above technical solution, in the oil casing coupling repair fixture including the mounting plate, clamping device, drive assembly and support assembly, the control assembly drives the first gear to rotate through the rotating rod, and the first gear drives the second gear and the third gear meshing with it to rotate, thereby causing the first screw and the second screw to rotate, realizing the adjustment of the length of the first support block and the second support block extending out of the support shaft, so as to adapt to the support requirements of the inner wall of the coupling of different sizes and ensure the stability of the coupling repair process.

[0020] Preferably, the end of the rotating rod closest to the outside is connected to a handle that facilitates rotating the rotating rod.

[0021] By adopting the above technical solution, a handle is set at the end of the rotating rod that is closer to the outside, which makes it easier to rotate the rotating rod and thus more convenient to adjust the length of the first and second support blocks extending out of the support shaft.

[0022] In summary, this utility model has the following beneficial effects: During the repair of oil casing couplings, the drive assembly moves the first and second clamping assemblies to slide on the mounting plate, causing the clamping parts on the first and second clamping assemblies to abut against the coupling, thus clamping the coupling. This avoids the cumbersome operation of manual clamps and the difficulty in ensuring consistent and stable clamping force, improving clamping efficiency and stability. Simultaneously, the support assembly inserts from the middle of the coupling and connects to the inner wall of the coupling, providing support during repair and further preventing loosening or displacement, ensuring effective repair. This also avoids the problem of pneumatic clamps being greatly affected by air source pressure and stability, providing reliable clamping force for the coupling in different environments and ensuring smooth repair work. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a clamp used for repairing oil casing couplings.

[0024] Figure 2 This is a schematic diagram of the control component.

[0025] Figure 3 This is a schematic diagram of the clamping component.

[0026] Explanation of reference numerals in the attached figures: 1. Mounting plate; 11. Slide groove; 2. First clamping assembly; 21. Fixing plate; 22. First clamping rod; 23. Second clamping rod; 3. Second clamping assembly; 4. Drive assembly; 41. Motor; 42. Bidirectional lead screw; 43. First slider; 44. Second slider; 5. Clamping element; 51. Clamping plate; 52. Protrusion; 53. Fixing ball; 54. Clamping block; 55. Anti-slip pad; 6. Adjustment assembly; 61. Adjusting screw; 62. Rotating block; 7. Support assembly; 71. Support shaft; 711. First groove; 712. Second groove; 713. Cavity; 72. First support block; 73. Second support block; 8. Control assembly; 81. Rotating rod; 811. Handle; 82. First gear; 83. Second gear; 84. Third gear; 85. First screw; 86. Second screw; 9. Coupling. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0028] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0029] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0030] A clamp for repairing oil casing couplings, as described in the reference. Figure 1 , Figure 2 and Figure 3 The assembly includes a mounting plate 1, a clamping device, a drive assembly 4, and a support assembly 7. The clamping device includes a first clamping assembly 2 and a second clamping assembly 3, both of which are slidably connected to the mounting plate 1. The drive assembly 4 is connected to the mounting plate 1, and both the first clamping assembly 2 and the second clamping assembly 3 are connected to the drive assembly 4, used to drive the first clamping assembly 2 and the second clamping assembly 3 to clamp the coupling 9. The support assembly 7 is connected to the mounting plate 1 and is connected to the inner wall of the coupling 9.

[0031] This clamp achieves the beneficial effect of stably and reliably fixing the oil casing coupling 9 from both the inside and outside, preventing the coupling 9 from loosening or shifting during maintenance, and ensuring the maintenance effect.

[0032] Reference Figure 1 The first clamping assembly 2 and the second clamping assembly 3 have the same structure, both including a fixing plate 21, a first clamping rod 22, and a second clamping rod 23. The fixing plate 21 is curved, and the centers of the fixing plates 21 of the first clamping assembly 2 and the second clamping assembly 3 are close to each other. The fixing plate 21 is slidably connected to the mounting plate 1, the first clamping rod 22 is fixedly connected to one end of the fixing plate 21, and the second clamping rod 23 is fixedly connected to the second end of the fixing plate 21.

[0033] Reference Figure 3Both the first clamping rod 22 and the second clamping rod 23 have clamping members 5 connected to their ends away from the fixing plate 21. The clamping member 5 includes a clamping plate 51, a protrusion 52, a fixing ball 53, and a clamping block 54. The clamping plate 51 corresponding to the first clamping rod 22 is connected to the first clamping rod 22, and the clamping plate 51 corresponding to the second clamping rod 23 is connected to the second clamping rod 23.

[0034] Reference Figure 3 The protrusion 52, the fixed ball 53, and the clamping block 54 form a fixing group, and multiple fixing groups are provided. The protrusion 52 is fixedly connected to the clamping plate 51, the fixed ball 53 is fixedly connected to the protrusion 52, and the clamping block 54 is rotatably connected to the fixed ball 53. The clamping block 54, through a ball-and-socket engagement, allows the fixed ball 53 to rotate within a certain range. This rotatable connection allows the clamping block 54 to better adapt to the surface shape of the coupling 9, improving the stability of clamping.

[0035] Reference Figure 3 The clamping block 54 is fixedly connected to an anti-slip pad 55, which abuts against the coupling 9. The anti-slip pad 55 can be made of rubber to increase friction and further prevent the coupling 9 from sliding.

[0036] Reference Figure 3 Adjustment components 6 are provided between the clamping plate 51 and the first clamping rod 22, and between the clamping plate 51 and the second clamping rod 23. Each adjustment component 6 includes an adjustment screw 61 and a rotating block 62. The adjustment screw 61 passes through the corresponding clamping rod and is threadedly connected to it. One end of the adjustment screw 61 is fixedly connected to the clamping plate 51, and the other end is fixedly connected to the rotating block 62.

[0037] Reference Figure 1 The drive assembly 4 includes a motor 41, a bidirectional lead screw 42, a first slider 43, and a second slider 44. The mounting plate 1 has two slide grooves 11. The bidirectional lead screw 42 passes through both slide grooves 11, is rotatably connected to the mounting plate 1, and one end of the bidirectional lead screw 42 passes through the mounting plate 1 and is fixedly connected to the motor 41.

[0038] Reference Figure 1 The first slider 43 and the second slider 44 correspond one-to-one with the two slide grooves 11 and are respectively disposed in the corresponding slide grooves 11, and are slidably connected to the mounting plate 1. The first slider 43 and the second slider 44 are both sleeved on the bidirectional lead screw 42 and are threadedly connected to the bidirectional lead screw 42. The fixing plate 21 of the first clamping assembly 2 is fixedly connected to the first slider 43, and the fixing plate 21 of the second clamping assembly 3 is fixedly connected to the second slider 44.

[0039] When the motor 41 starts, it drives the bidirectional lead screw 42 to rotate. The bidirectional lead screw 42 drives the first slider 43 and the second slider 44 to move. The first slider 43 and the second slider 44 will move in opposite directions or away from each other along the slide groove 11, thereby driving the first clamping component 2 and the second clamping component 3 to move, so as to realize the clamping and releasing of the docking hoop 9.

[0040] Reference Figure 1 and Figure 2 The support assembly 7 includes a support shaft 71, a first support block 72, and a second support block 73. The support shaft 71 has a first groove 711 and a second groove 712. The first support block 72 is disposed within the first groove 711 and is slidably connected to the support shaft 71. The second support block 73 is disposed within the second groove 712 and is slidably connected to the support shaft 71. A control assembly 8 is connected to the support shaft 71 to adjust the length of the first support block 72 and the second support block 73 extending beyond the support shaft 71.

[0041] Reference Figure 2 The control assembly 8 includes a rotating rod 81, a first gear 82, a second gear 83, a third gear 84, a first screw 85, and a second screw 86. A cavity 713 is formed inside the support shaft 71. One end of the rotating rod 81 passes through the support shaft 71 and the mounting plate 1, extending into the cavity 713. A handle 811 is connected to the end of the rotating rod 81 closest to the outside, facilitating rotation by the operator.

[0042] Reference Figure 2 The first gear 82, the second gear 83, and the third gear 84 are all located in the cavity 713. The first gear 82 is fixedly connected to the rotating rod 81. The second gear 83 and the third gear 84 are both meshed with the first gear 82. One end of the first screw 85 is connected to the second gear 83, and the other end passes through the support shaft 71 and is threadedly connected to the first support block 72. One end of the second screw 86 is connected to the third gear 84, and the other end passes through the support shaft 71 and is threadedly connected to the second support block 73. The first screw 85 and the second screw 86 are both rotatably connected to the support shaft 71.

[0043] When the handle 811 is turned, the rotating rod 81 rotates, the first gear 82 rotates accordingly, which in turn drives the second gear 83 and the third gear 84 to rotate, causing the first screw 85 and the second screw 86 to rotate, thereby adjusting the length of the first support block 72 and the second support block 73 extending out of the support shaft 71, so as to support the couplings 9 with different inner diameters.

[0044] The operating principle of this application is as follows: The clamp provides a mounting base for each component through the mounting plate 1. The drive component 4 moves the first clamping component 2 and the second clamping component 3 of the clamping device to achieve clamping of the coupling 9. The clamping force of the clamping component 5 can be adjusted by the adjustment component 6. At the same time, the support component 7 supports the coupling 9 from the inside, and the support force and range can be adjusted by the control component 8. This combination of internal and external fixing methods is simpler to operate than traditional manual clamps and pneumatic clamps. It can provide a stable and reliable clamping force, is not affected by human power or air supply, effectively avoids loosening or displacement of the coupling 9 during maintenance, improves maintenance efficiency, extends the service life of the casing coupling 9, reduces replacement costs, and improves the safety and economy of oil extraction.

[0045] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A clamp for repairing oil casing couplings, characterized in that: Includes mounting plate (1); The clamping device includes a first clamping assembly (2) and a second clamping assembly (3). Both the first clamping assembly (2) and the second clamping assembly (3) are slidably connected to the mounting plate (1) for clamping the coupling (9). The first clamping assembly (2) and the second clamping assembly (3) have the same structure, both including a fixing plate (21), a first clamping rod (22) and a second clamping rod (23). The fixing plate (21) is slidably connected to the mounting plate (1). The first clamping rod (22) and the second clamping rod (23) are both connected to the fixing plate (21). Both the first clamping rod (22) and the second clamping rod (23) are connected to a clamping member (5). The clamping member (5) abuts against the coupling (9). A drive assembly (4) is connected to the mounting plate (1), and both the first clamping assembly (2) and the second clamping assembly (3) are connected to the drive assembly (4) to drive the first clamping assembly (2) and the second clamping assembly (3) to move; and A support assembly (7) is connected to the mounting plate (1). The support assembly (7) is inserted from the middle of the coupling (9) and connected to the inner wall of the coupling (9).

2. A clamp for repairing oil casing couplings according to claim 1, characterized in that: The clamping member (5) includes a clamping plate (51), a protrusion (52), a fixing ball (53), and a clamping block (54). The clamping plate (51) corresponding to the first clamping rod (22) is connected to the first clamping rod (22), and the clamping plate (51) corresponding to the second clamping rod (23) is connected to the second clamping rod (23). The protrusion (52), the fixing ball (53), and the clamping block (54) form a fixing group. Multiple fixing groups are provided. The protrusion (52) is connected to the clamping plate (51), the fixing ball (53) is connected to the protrusion (52), and the clamping block (54) is rotatably connected to the fixing ball (53).

3. A clamp for repairing oil casing couplings according to claim 2, characterized in that: The clamping block (54) is fixedly connected to an anti-slip pad (55), which abuts against the coupling (9).

4. A clamp for repairing oil casing couplings according to claim 2, characterized in that: The clamping plate (51) is connected to an adjustment assembly (6), which includes an adjustment screw (61) and a rotating block (62). One end of the adjustment screw (61) is connected to the rotating block (62). The adjustment screw (61) corresponding to the first clamping rod (22) passes through the first clamping rod (22) and is threadedly connected to the first clamping rod (22). The adjustment screw (61) corresponding to the second clamping rod (23) passes through the second clamping rod (23) and is threadedly connected to the second clamping rod (23). The adjustment screw (61) is connected to the clamping plate (51).

5. A clamp for repairing oil casing couplings according to claim 1, characterized in that: The drive assembly (4) includes a motor (41), a bidirectional lead screw (42), a first slider (43), and a second slider (44). A groove (11) is provided on the mounting plate (1). The bidirectional lead screw (42) passes through the groove (11) and is rotatably connected to the mounting plate (1). One end of the bidirectional lead screw (42) is connected to the motor (41). The first slider (43) and the second slider (44) are both located in the groove (11) and are threadedly connected to the bidirectional lead screw (42). The first slider (43) is connected to the first clamping assembly (2), and the second slider (44) is connected to the second clamping assembly (3).

6. A clamp for repairing oil casing couplings according to claim 1, characterized in that: The support assembly (7) includes a support shaft (71), a first support block (72), and a second support block (73). The support shaft (71) is fixedly connected to the mounting plate (1). The support shaft (71) has a first groove (711) and a second groove (712). The first support block (72) is located in the first groove (711) and is slidably connected to the support shaft (71). The second support block (73) is located in the second groove (712) and is slidably connected to the support shaft (71). The support shaft (71) is connected to a control assembly (8) for adjusting the length of the first support block (72) and the second support block (73) extending out of the support shaft (71).

7. A clamp for repairing oil casing couplings according to claim 6, characterized in that: The control component (8) includes a rotating rod (81), a first gear (82), a second gear (83), a third gear (84), a first screw (85), and a second screw (86). A cavity (713) is formed inside the support shaft (71). The rotating rod (81) passes through the support shaft (71) and the mounting plate (1) and extends into the cavity (713). The first gear (82), second gear (83), and third gear (84) are all located within the cavity (713). The first gear (82) and the rotating rod (81)... The first screw (85) is connected to the second gear (83) and the third gear (84), both of which mesh with the first gear (82). One end of the first screw (85) is connected to the second gear (83), and the other end passes through the support shaft (71) and is threadedly connected to the first support block (72). One end of the second screw (86) is connected to the third gear (84), and the other end passes through the support shaft (71) and is threadedly connected to the second support block (73). Both the first screw (85) and the second screw (86) are rotatably connected to the support shaft (71).

8. A clamp for repairing oil casing couplings according to claim 7, characterized in that: The rotating rod (81) has a handle (811) connected to the end near the outside to facilitate rotating the rotating rod (81).

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