Hydraulic clamp for lifting sucker rod in workover treatment

Abstract

The utility model belongs to the technical field of hydraulic tongs, and particularly relates to a hydraulic tong for lifting a sucker rod in workover treatment, which comprises a hydraulic tong main body, a sliding chute is arranged on the surface of the hydraulic tong main body, two sliding blocks are connected in the sliding chute in a sliding manner, the center of each sliding block is rotatably connected with an extension rod, and the extension rod is connected with the hydraulic tong main body. The upper end and the lower end of the extension rod are fixedly connected with chucks correspondingly, a plurality of clamping grooves are formed in the surfaces of the chucks, and a clamping assembly is installed on the hydraulic tong body. The sucker rod is inserted between the two sliding blocks, the hydraulic rod is operated to push the sliding blocks to slide, so that the chucks on the upper portion and the lower portion abut against the sucker rod synchronously, synchronous clamping and fixing of the upper wall and the lower wall of the sucker rod are achieved, and butt joint installation of the sucker rod is facilitated; after the steps are implemented, the hydraulic clamp body is rotated and pushed to drive the sucker rod to rotate to realize disassembly.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pliers, in particular to a pair of hydraulic pliers used for lifting a pumping rod in a well repair operation. Background Art

[0002] Hydraulic pliers consist of a pliers body, a hydraulic cylinder, a movable jaw and a fixed jaw. The external hydraulic system provides oil pressure to the hydraulic cylinder for clamping objects, etc.

[0003] In the prior art, when connecting the sucker rods, two sets of clamping assemblies are needed to clamp and fix the sucker rods. The clamping assemblies in the prior art require two sets of clamping mechanisms to clamp the two sets of sucker rods to achieve the connection of the sucker rods. However, such operation is too complicated, and its structure is not optimized enough and the design is not reasonable enough.

[0004] The existing Chinese patent with announcement number CN211565669U discloses a hydraulic pliers with auxiliary fixing effect. The utility model relates to the field of petroleum. The utility model comprises a hydraulic tooling, a hydraulic cylinder is installed on the left part of the inner cavity of the hydraulic tooling, a support column is welded on the left side of the lower surface of the hydraulic tooling, and a connecting piece is welded on the lower part of the right wall of the support column.

[0005] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the overall size of the device is large, which is inconvenient to carry, and the size of the arc groove of the clamping block is fixed and cannot be flexibly adjusted according to the size of the sucker rod, which needs to be improved; therefore, in view of the above problems, a hydraulic pliers for lifting the sucker rod in well repair operations is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model provides a hydraulic pliers for lifting a pumping rod in a well repair operation.

[0007] The technical solution adopted by the utility model to solve the technical problem is as follows: the utility model is a hydraulic pliers for lifting the sucker rod in well repairing operation, comprising a hydraulic pliers body, a slide groove is provided on the surface of the hydraulic pliers body, two sliders are slidably connected inside the slide groove, an extension rod is rotatably connected at the center of the slider, the upper and lower ends of the extension rod are respectively fixedly connected with a chuck, a surface of the chuck is provided with a plurality of slots, a clamping assembly is installed on the hydraulic pliers body, the clamping assembly comprises a hydraulic rod, a clamping plate and a clamping seat, the hydraulic rod is fixedly installed inside the slide groove, and the clamping assembly comprises a hydraulic rod, a clamping plate and a clamping seat. The hydraulic rod is fixedly installed inside the slide groove. One end of the clamping plate is rotatably connected to the hydraulic pliers body through an axis, and the other end of the clamping plate is installed inside the clamping seat, and the clamping seat is fixedly connected to the hydraulic pliers body. The clamping plate is inserted into the inside of the clamping seat to block the slide groove to prevent the slider from falling off. When in use, the sucker rod is inserted between the two sliders, and the hydraulic rod is operated to push the slider to slide, so that the upper and lower chucks are respectively synchronously against the sucker rod, thereby realizing synchronous clamping and fixing of the upper and lower walls of the sucker rod, which is convenient for the docking and installation of the sucker rod. When the sucker rod needs to be disassembled, the above steps are implemented and the hydraulic pliers body is rotated to drive the sucker rod to rotate for disassembly.

[0008] Preferably, magnetic blocks with opposite magnetic properties are fixedly connected to opposite sides of the two sliders, and the magnetic force of the magnetic blocks leaves a gap between the two sliders to facilitate the insertion of the sucker rod.

[0009] Preferably, the card plate includes a connecting end and a sliding end, and the connecting end and the sliding end are slidably connected to each other at opposite ends. The connecting end and the sliding end are displayed and inserted into the interior of the card seat through a spring. After use, the sliding end is pulled out of the card seat, and then the card plate is rotated to open the slide slot, so that the two sets of sliders can be disassembled and taken out, thereby reducing the overall volume of the hydraulic pliers body and facilitating carrying.

[0010] Preferably, a spring 1 is fixedly connected to an opposite end of the connecting end and the sliding end.

[0011] Preferably, the diameters of the plurality of slots are different to accommodate sucker rods of different sizes.

[0012] Preferably, an adjustment assembly is installed on the slider and the extension rod, and the adjustment assembly includes a plurality of fixing grooves, which are annularly opened on the surface of the extension rod. When the chuck is against the sucker rod, the outer surface of the sucker rod is fitted through the groove, and the corresponding groove of the sucker rod is adjusted by rotating the extension rod, so that the size of the groove can be flexibly adjusted according to the size of the sucker rod, thereby improving the clamping effect.

[0013] Preferably, the adjustment assembly also includes a sliding seat, which is fixedly mounted on the surface of the slider. The sliding seat is internally slidably connected with a T-shaped block, which is inserted into the interior of the fixed slot through the elastic force of spring 2, thereby fixing the extension rod. When the slot needs to be adjusted, the block is pushed out of the fixed slot, and the extension rod can be rotated for quick adjustment, which is easy to use.

[0014] Preferably, a second spring is fixedly connected to the opposite side of the block and the sliding seat.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model inserts the sucker rod between two slide blocks, operates the hydraulic rod to push the slide block to slide, so that the upper and lower chucks are respectively pressed against the sucker rod synchronously, thereby realizing synchronous clamping and fixing of the upper and lower walls of the sucker rod, and facilitating the docking and installation of the sucker rod. When the sucker rod needs to be disassembled, after implementing the above steps, the hydraulic pliers body can be rotated to drive the sucker rod to rotate and realize disassembly.

[0017] 2. The utility model opens the slide slot by rotating the clamping plate, so that the two sets of slide blocks can be disassembled and taken out, reducing the overall volume of the hydraulic pliers body and making it convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the hydraulic pliers of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the clamping assembly and the adjusting assembly of the utility model;

[0022] Figure 4 For this utility model Figure 3 A structural diagram of ;

[0023] Figure 5 For this utility model Figure 3 Schematic diagram of the B structure.

[0024] In the figure: 1. hydraulic pliers body; 2. slide groove; 3. slider; 4. extension rod; 5. chuck; 6. clamping assembly; 61. hydraulic rod; 62. clamping plate; 63. clamping seat; 621. connecting end; 622. sliding end; 623. spring 1; 7. magnetic block; 8. adjustment assembly; 81. fixed groove; 82. sliding seat; 83. clamping block; 84. spring 2; 9. clamping groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figure 1-4 As shown, a hydraulic pliers for lifting a sucker rod in a well repair operation comprises a hydraulic pliers body 1, a slide groove 2 is provided on the surface of the hydraulic pliers body 1, two sliders 3 are slidably connected inside the slide groove 2, an extension rod 4 is rotatably connected at the center of the slider 3, a chuck 5 is fixedly connected to the upper and lower ends of the extension rod 4, a plurality of slots 9 are provided on the surface of the chuck 5, a clamping assembly 6 is installed on the hydraulic pliers body 1, the clamping assembly 6 comprises a hydraulic rod 61, a clamping plate 62 and a clamping seat 63, the hydraulic rod 61 is fixedly installed inside the slide groove 2, one end of the clamping plate 62 is rotatably connected to the hydraulic pliers body 1 through an axis , and the other end of the clamping plate 62 is installed in the inside of the clamping seat 63, and the clamping seat 63 is fixedly connected to the hydraulic pliers body 1, and the clamping plate 62 is inserted into the inside of the clamping seat 63 to block the slide groove 2 to prevent the slider 3 from falling off. When in use, the sucker rod is inserted between the two sliders 3, and the hydraulic rod 61 is operated to push the slider 3 to slide, so that the upper and lower chucks 5 are respectively synchronously against the sucker rod, so as to achieve synchronous clamping and fixing of the upper and lower walls of the sucker rod, which is convenient for the docking installation of the sucker rod. When the sucker rod needs to be disassembled, after implementing the above steps, the hydraulic pliers body 1 can be rotated to drive the sucker rod to rotate and realize disassembly.

[0028] Magnetic blocks 7 with opposite magnetic properties are fixedly connected to opposite sides of the two sliders 3. Through the magnetic force of the magnetic blocks 7, a gap is left between the two sliders 3 to facilitate the insertion of the sucker rod.

[0029] The card plate 62 includes a connecting end 621 and a sliding end 622. The connecting end 621 and the sliding end 622 are slidably connected at opposite ends. The connecting end 621 and the sliding end 622 are displayed and inserted into the interior of the card seat 63 through a spring 623. After use, pull the sliding end 622 out of the card seat 63, and then rotate the card plate 62 to open the slide groove 2, so that the two sets of sliders 3 can be disassembled and taken out, reducing the overall volume of the hydraulic pliers body 1 and making it convenient to carry.

[0030] A spring 1 623 is fixedly connected to one end opposite to the connecting end 621 and the sliding end 622 .

[0031] Embodiment 2

[0032] For comparison with Example 1, please refer to Figure 5 As shown, the utility model provides another embodiment, in which the diameters of the plurality of slots 9 are different to accommodate sucker rods of different sizes.

[0033] An adjustment assembly 8 is installed on the slider 3 and the extension rod 4. The adjustment assembly 8 includes a plurality of fixing grooves 81. The fixing groove 81 is annularly opened on the surface of the extension rod 4. When the chuck 5 is against the sucker rod, the outer surface of the sucker rod is fitted through the groove 9. By rotating the extension rod 4, the corresponding groove 9 of the sucker rod is adjusted, so that the size of the groove 9 can be flexibly adjusted according to the size of the sucker rod to improve the clamping effect.

[0034] The adjustment assembly 8 also includes a sliding seat 82, which is fixedly installed on the surface of the slider 3. The sliding seat 82 is internally slidably connected with a T-shaped block 83. The block 83 is inserted into the interior of the fixed groove 81 through the elastic force of the spring 84, thereby fixing the extension rod 4. When the slot 9 needs to be adjusted, the block 83 is pushed out of the fixed groove 81, and the extension rod 4 can be rotated for quick adjustment, which is easy to use.

[0035] A second spring 84 is fixedly connected to the opposite side of the block 83 and the sliding seat 82 .

[0036] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and according to the actual situation, a suitable controller should be selected to be electrically connected to the hydraulic rod 61 to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the working order. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0037] The working principle is that the clamping plate 62 is inserted into the inside of the clamping seat 63 to block the slide groove 2 and prevent the slider 3 from falling off. When in use, the sucker rod is inserted between the two sliders 3, and the hydraulic rod 61 is operated to push the slider 3 to slide, so that the upper and lower chucks 5 are respectively pressed against the sucker rod synchronously, so as to achieve synchronous clamping and fixing of the upper and lower walls of the sucker rod, which is convenient for the docking and installation of the sucker rod. When the sucker rod needs to be disassembled, after implementing the above steps, the hydraulic pliers body 1 is rotated to drive the sucker rod to rotate and realize disassembly.

[0038] After use, the sliding end 622 is pulled out of the clamping seat 63, and then the clamping plate 62 is rotated to open the slide slot 2, so that the two sets of sliders 3 can be disassembled and taken out, reducing the overall volume of the hydraulic pliers body 1 and making it easier to carry.

[0039] When the chuck 5 is against the sucker rod, the slot 9 fits the outer surface of the sucker rod, and the slot 9 corresponding to the sucker rod is adjusted by rotating the extension rod 4, so that the size of the slot 9 can be flexibly adjusted according to the size of the sucker rod to improve the clamping effect.

[0040] The block 83 is inserted into the fixing slot 81 by the elastic force of the spring 84 to fix the extension rod 4. When the slot 9 needs to be adjusted, the block 83 is pushed out of the fixing slot 81, and the extension rod 4 can be rotated for quick adjustment, which is convenient to use.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A hydraulic pliers for lifting a sucker rod in a well repair operation, comprising a hydraulic pliers body (1), characterized in that: The surface of the hydraulic pliers body (1) is provided with a slide groove (2), and two sliders (3) are slidably connected inside the slide groove (2). An extension rod (4) is rotatably connected at the center of the slider (3). The upper and lower ends of the extension rod (4) are respectively fixedly connected with a chuck (5), and the surface of the chuck (5) is provided with a plurality of slots (9). A clamping assembly (6) is installed on the hydraulic pliers body (1), and the clamping assembly (6) comprises a hydraulic rod (61), a clamping plate (62) and a clamping seat (63). The hydraulic rod (61) is fixedly installed inside the slide groove (2), one end of the clamping plate (62) is rotatably connected to the hydraulic pliers body (1) through an axis, and the other end of the clamping plate (62) is installed inside the clamping seat (63), and the clamping seat (63) is fixedly connected to the hydraulic pliers body (1).

2. The hydraulic pliers for lifting the sucker rod in well repair work according to claim 1, characterized in that: Magnetic blocks (7) with opposite magnetic properties are respectively fixedly connected to opposite sides of the two sliding blocks (3).

3. The hydraulic pliers for pulling up the sucker rod in well repair work according to claim 1, characterized in that: The card plate (62) comprises a connecting end (621) and a sliding end (622), and opposite ends of the connecting end (621) and the sliding end (622) are slidably connected.

4. The hydraulic pliers for pulling up the sucker rod in well repair work according to claim 3, characterized in that: A spring 1 (623) is fixedly connected to the opposite end of the connecting end (621) and the sliding end (622).

5. The hydraulic pliers for pulling up the sucker rod in well repair work according to claim 1, characterized in that: The diameters of the plurality of clamping grooves (9) are different to accommodate pumping rods of different sizes.

6. The hydraulic pliers for pulling up the sucker rod in well repair work according to claim 1, characterized in that: An adjustment component (8) is installed on the slider (3) and the extension rod (4). The adjustment component (8) comprises a plurality of fixing grooves (81). The fixing grooves (81) are annularly arranged on the surface of the extension rod (4).

7. The hydraulic pliers for pulling up the sucker rod in well repair work according to claim 6, characterized in that: The adjustment assembly (8) further comprises a sliding seat (82), wherein the sliding seat (82) is fixedly mounted on the surface of the sliding block (3), and a T-shaped clamping block (83) is slidably connected inside the sliding seat (82).

8. The hydraulic pliers for pulling up the sucker rod in well repair work according to claim 7, characterized in that: A second spring (84) is fixedly connected to the opposite side of the clamping block (83) and the sliding seat (82).

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