Hydraulic power tongs for well repair

Abstract

The utility model relates to the technical field of hydraulic power tongs, and discloses a hydraulic power tong for well repair, which comprises a mounting rack, a transmission assembly fixedly connected to the right side of the mounting rack, a main tong head arranged on the right side of the transmission assembly, a reduction gearbox fixedly connected to the right side of the mounting rack, and an auxiliary tong head arranged on the right side of the reduction gearbox. A hydraulic motor is fixedly connected to the top of the transmission assembly, a stroke gearbox is arranged on the left side of the hydraulic motor, an adjusting hoisting mechanism is arranged on the top of the transmission assembly, and an auxiliary protection mechanism is arranged on the right side of the main tong head. And the positions of the two lifting rings can be conveniently adjusted through rotation of the two-way threaded rod, so that adjustment is carried out according to the overall gravity center position of the device, sliding and other unforeseen circumstances in the subsequent lifting process are avoided, and through movement of the sliding plate, the position of the baffle is conveniently adjusted, and limiting is carried out.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic power tongs technology, specifically a hydraulic power tongs for well repair. Background Technology

[0002] Hydraulic power tongs are mechanical tools used to thread and unthread pipes using the power of a workover rig. They can greatly reduce the labor intensity of workover workers and avoid or reduce the occurrence of accidents. At the same time, hydraulic power tongs enhance the torque of the threads on pipes and drill bits, reducing the occurrence of pipe or drill bit disengagement accidents. The working principle of hydraulic power tongs is to transmit the power of the workover rig to the hydraulic motor of the hydraulic power tongs, which then passes through a stroke reducer and two or one stage of reduction, causing the opening gear of the tong head to rotate, generating two speeds, high and low, thereby driving the pipe (drill bit) to rotate.

[0003] In the existing technology, the clamp body lifting support structure is simple, relying only on the bottom fulcrum or simple balancing device. When the radial force of the tubing string is uneven, it is easy to shake. At the same time, the clamp head opening of the existing device is always open, which makes it easy to slip out and other accidents during the clamping of pipes or joints. Therefore, it is necessary to improve the hydraulic power clamp for well workover to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic power tong for well repair, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic power tong for well repair, comprising a mounting frame, a transmission assembly fixedly connected to the right side of the mounting frame, a main tong head disposed on the right side of the transmission assembly, a reduction gearbox fixedly connected to the right side of the mounting frame, a secondary tong head disposed on the right side of the reduction gearbox, a hydraulic motor fixedly connected to the top of the transmission assembly, a stroke gearbox disposed on the left side of the hydraulic motor, an adjustment and hoisting mechanism disposed on the top of the transmission assembly, and an auxiliary protection mechanism disposed on the right side of the main tong head;

[0006] The adjusting hoisting mechanism includes an adjusting component and a hoisting component, with the hoisting component positioned on top of the adjusting component.

[0007] Preferably, the adjustment component includes a first connecting platform, which is fixedly connected to the top of the transmission assembly. A first threaded rod is rotatably connected inside the first connecting platform, and a first limiting rod is fixedly connected inside the first connecting platform. A connecting plate is slidably connected to the outside of the first limiting rod, and a connecting block is fixedly connected to the top of the connecting plate. This facilitates adjusting the position of the connecting block, thereby adjusting the height of the lifting ring, which in turn facilitates subsequent hoisting and placement by the staff and avoids interference with other equipment.

[0008] Preferably, the connecting plate is threadedly connected to the first threaded rod, and the first connecting platform and the connecting block are provided with grooves at corresponding positions, and the connecting block is slidably connected inside the groove, which facilitates a more stable adjustment process.

[0009] Preferably, the hoisting assembly includes a second connecting platform, which is fixedly connected to the top of the connecting block. A bidirectional threaded rod is rotatably connected inside the second connecting platform, and a second limiting rod is fixedly connected inside the second connecting platform. A movable block is slidably connected to the outside of the second limiting rod, and a lifting ring is fixedly connected to the top of the movable block. This facilitates the adjustment of the positions of the two lifting rings, thereby meeting the requirements for adjustment according to the overall center of gravity of the device and avoiding unexpected situations such as slippage during subsequent hoisting.

[0010] Preferably, the movable block is threadedly connected to the bidirectional threaded rod, and the second connecting platform has a groove at the corresponding position of the movable block, and the movable block is slidably connected inside the groove, which facilitates a more stable hoisting process.

[0011] Preferably, the auxiliary protection mechanism includes a first fixing block, which is fixedly connected to the right side of the main jaw. A baffle is rotatably connected inside the first fixing block. A second fixing block is fixedly connected to the right side of the main jaw. A connecting box is fixedly connected to the top of the second fixing block. A spring is fixedly connected inside the connecting box. A sliding plate is fixedly connected to the bottom of the spring. A locking pin is fixedly connected to the bottom of the sliding plate. This facilitates the adjustment and limiting of the baffle position, and satisfies the initial limiting of the pipes and connectors inside the main jaw and auxiliary jaw, preventing slippage or other accidents during clamping.

[0012] Preferably, the slide plate is slidably connected to the connecting box, the locking post is slidably connected to the connecting box, and the baffle and the locking post are provided with grooves at corresponding positions, and the locking post is inserted into the groove, which makes the limiting process more stable.

[0013] Compared with the prior art, this utility model provides a hydraulic power tong for well workover, which has the following beneficial effects:

[0014] 1. This hydraulic power tong for well repair, through its adjustable lifting mechanism, allows for easy adjustment of the connecting block position and lifting ring height by rotating the first threaded rod in conjunction with the first limit rod. This facilitates subsequent lifting and placement by the operator and avoids interference with other equipment. The rotation of the bidirectional threaded rod, in conjunction with the second limit rod, allows for adjustment of the two lifting ring positions, ensuring that the position is adjusted according to the overall center of gravity of the device and preventing slippage or other unexpected situations during subsequent lifting.

[0015] 2. This hydraulic power tongs for well repair, through its auxiliary protective mechanism, allows for easy adjustment and limiting of the baffle position during use via the movement of a sliding plate and spring. This provides initial restraint on the pipes and fittings inside the main and auxiliary tongs, preventing slippage or other accidents during clamping. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the adjustment component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the adjustment component of this utility model;

[0020] Figure 4 This is a schematic diagram of the hoisting component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the hoisting assembly of this utility model;

[0022] Figure 6 This is a schematic diagram of the auxiliary protection mechanism of this utility model;

[0023] Figure 7 This is a schematic diagram of the internal structure of the auxiliary protection mechanism of this utility model.

[0024] In the diagram: 1. Mounting bracket; 2. Transmission assembly; 3. Main clamp head; 4. Gearbox; 5. Secondary clamp head; 6. Hydraulic motor; 7. Stroke gearbox; 8. Adjustable lifting mechanism; 81. Adjustment component; 811. First connecting platform; 812. First threaded rod; 813. Connecting block; 814. First limit rod; 815. Connecting plate; 82. Lifting component; 821. Second connecting platform; 822. Bidirectional threaded rod; 823. Movable block; 824. Lifting ring; 825. Second limit rod; 9. Auxiliary protection mechanism; 91. First fixing block; 92. Baffle; 93. Second fixing block; 94. Connecting box; 95. Slide plate; 96. Spring; 97. Locking post. Detailed Implementation

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

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0027] Given that current technologies often employ simple lifting and support structures for clamps, relying solely on a bottom fulcrum or a basic balancing device, which can easily lead to swaying when the tubing string experiences uneven radial stress, this embodiment provides a hydraulically powered clamp for well workover. Please refer to [link to relevant documentation]. Figure 1-5 This utility model provides a technical solution: a hydraulic power tong for well repair, including a mounting frame 1, a transmission assembly 2 fixedly connected to the right side of the mounting frame 1, a main tong head 3 provided on the right side of the transmission assembly 2, a reduction gearbox 4 fixedly connected to the right side of the mounting frame 1, a secondary tong head 5 provided on the right side of the reduction gearbox 4, a hydraulic motor 6 fixedly connected to the top of the transmission assembly 2, a stroke gearbox 7 provided on the left side of the hydraulic motor 6, an adjustment and hoisting mechanism 8 provided on the top of the transmission assembly 2, and an auxiliary protection mechanism 9 provided on the right side of the main tong head 3;

[0028] The adjusting hoisting mechanism 8 includes an adjusting component 81 and a hoisting component 82, with the hoisting component 82 positioned on top of the adjusting component 81.

[0029] Furthermore, the adjustment assembly 81 includes a first connecting platform 811, which is fixedly connected to the top of the transmission assembly 2. A first threaded rod 812 is rotatably connected inside the first connecting platform 811, and a first limiting rod 814 is fixedly connected inside the first connecting platform 811. A connecting plate 815 is slidably connected to the outside of the first limiting rod 814, and a connecting block 813 is fixedly connected to the top of the connecting plate 815. This facilitates the adjustment of the position of the connecting block 813, thereby adjusting the height of the lifting ring 824. This makes it easier for workers to carry out subsequent hoisting and placement processes and avoids interference with other equipment.

[0030] Furthermore, the connecting plate 815 is threadedly connected to the first threaded rod 812, and the first connecting platform 811 and the connecting block 813 are provided with grooves at corresponding positions, and the connecting block 813 is slidably connected inside the groove, which facilitates a more stable adjustment process.

[0031] Furthermore, the hoisting assembly 82 includes a second connecting platform 821, which is fixedly connected to the top of the connecting block 813. A bidirectional threaded rod 822 is rotatably connected inside the second connecting platform 821, and a second limiting rod 825 is fixedly connected inside the second connecting platform 821. A movable block 823 is slidably connected to the outside of the second limiting rod 825, and a lifting ring 824 is fixedly connected to the top of the movable block 823. This facilitates the adjustment of the positions of the two lifting rings 824, thereby meeting the requirements for adjustment according to the overall center of gravity of the device and avoiding unexpected situations such as slippage during subsequent hoisting.

[0032] Furthermore, the movable block 823 is threadedly connected to the bidirectional threaded rod 822, and the second connecting platform 821 is provided with a groove at the corresponding position of the movable block 823, and the movable block 823 is slidably connected inside the groove, which facilitates a more stable hoisting process. Example

[0033] Based on Embodiment 1, the existing clamping device in the prior art has a constantly open opening, which easily leads to slippage and other unexpected situations during the clamping of pipes or connectors. Therefore, this utility model provides Embodiment 2 to solve the above-mentioned technical problem. Please refer to Embodiment 2. Figure 6-7 Furthermore, in conjunction with Embodiment 1, the auxiliary protection mechanism 9 includes a first fixing block 91, which is fixedly connected to the right side of the main clamp head 3. A baffle 92 is rotatably connected inside the first fixing block 91. A second fixing block 93 is fixedly connected to the right side of the main clamp head 3. A connecting box 94 is fixedly connected to the top of the second fixing block 93. A spring 96 is fixedly connected inside the connecting box 94. A sliding plate 95 is fixedly connected to the bottom of the spring 96. A locking post 97 is fixedly connected to the bottom of the sliding plate 95, which facilitates the adjustment of the position of the baffle 92 and its limiting, thereby satisfying the initial limiting of the pipes and connectors inside the main clamp head 3 and the auxiliary clamp head 5, and preventing slippage or other accidents during clamping.

[0034] Furthermore, the slide plate 95 is slidably connected to the connecting box 94, the locking post 97 is slidably connected to the connecting box 94, and the baffle 92 and the locking post 97 are provided with grooves at corresponding positions, and the locking post 97 is inserted into the groove, which makes the limiting process more stable.

[0035] In actual operation, when this device is used, it is first moved to the designated application location. The operator uses a hex wrench to rotate the first threaded rod 812. This rotation, in conjunction with the first limiting rod 814, moves the connecting plate 815, thereby moving the connecting block 813. After adjustment, the operator adjusts the device according to its overall center of gravity. Then, using a hex wrench, the operator rotates the double-ended threaded rod 822. This rotation, in conjunction with the second limiting rod 825, moves the movable block 823, thereby moving the lifting ring 824. The device is hoisted using external lifting rings and hoisting equipment. The operator places the external connectors and pipes inside the main clamp head 3 and the auxiliary clamp head 5. The operator pulls the slide plate 95, and the movement of the slide plate 95, in conjunction with the spring 96, causes the locking pin 97 to move. After rotating the baffle 92 to the designated position, the slide plate 95 is released. Under the action of the spring 96, the locking pin 97 is inserted into the baffle 92. The hydraulic motor 6 works, and in conjunction with the stroke gearbox 7, the transmission is transmitted to the transmission assembly 2 and the reduction gearbox 4, causing the main clamp head 3 and the auxiliary clamp head 5 to work and complete the clamping of the pipes and connectors.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A hydraulic power tong for well workover, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is fixedly connected to the right side of the transmission assembly (2), the right side of the transmission assembly (2) is provided with the main jaw head (3), the right side of the mounting bracket (1) is fixedly connected with the reduction gearbox (4), the right side of the reduction gearbox (4) is provided with the auxiliary jaw head (5), the top of the transmission assembly (2) is fixedly connected with the hydraulic motor (6), the left side of the hydraulic motor (6) is provided with the stroke gearbox (7), the top of the transmission assembly (2) is provided with the adjustment and hoisting mechanism (8), and the right side of the main jaw head (3) is provided with the auxiliary protection mechanism (9). The adjusting hoisting mechanism (8) includes an adjusting component (81) and a hoisting component (82), with the hoisting component (82) located on top of the adjusting component (81).

2. The hydraulic power tongs for well workover according to claim 1, characterized in that: The adjustment assembly (81) includes a first connecting platform (811), which is fixedly connected to the top of the transmission assembly (2). A first threaded rod (812) is rotatably connected inside the first connecting platform (811). A first limiting rod (814) is fixedly connected inside the first connecting platform (811). A connecting plate (815) is slidably connected to the outside of the first limiting rod (814). A connecting block (813) is fixedly connected to the top of the connecting plate (815).

3. A hydraulic power tong for well workover according to claim 2, characterized in that: The connecting plate (815) is threadedly connected to the first threaded rod (812), and the first connecting platform (811) and the connecting block (813) are provided with grooves at corresponding positions, and the connecting block (813) is slidably connected inside the groove.

4. A hydraulic power tong for well workover according to claim 2, characterized in that: The hoisting assembly (82) includes a second connecting platform (821), which is fixedly connected to the top of the connecting block (813). A bidirectional threaded rod (822) is rotatably connected inside the second connecting platform (821). A second limiting rod (825) is fixedly connected inside the second connecting platform (821). A movable block (823) is slidably connected to the outside of the second limiting rod (825). A lifting ring (824) is fixedly connected to the top of the movable block (823).

5. A hydraulic power tong for well workover according to claim 4, characterized in that: The movable block (823) is threadedly connected to the bidirectional threaded rod (822). The second connecting platform (821) has a groove at the corresponding position of the movable block (823), and the movable block (823) is slidably connected inside the groove.

6. A hydraulic power tong for well workover according to claim 1, characterized in that: The auxiliary protective mechanism (9) includes a first fixing block (91), which is fixedly connected to the right side of the main clamp head (3). A baffle (92) is rotatably connected inside the first fixing block (91). A second fixing block (93) is fixedly connected to the right side of the main clamp head (3). A connecting box (94) is fixedly connected to the top of the second fixing block (93). A spring (96) is fixedly connected inside the connecting box (94). A sliding plate (95) is fixedly connected to the bottom of the spring (96). A locking post (97) is fixedly connected to the bottom of the sliding plate (95).

7. A hydraulic power tong for well workover according to claim 6, characterized in that: The slide plate (95) is slidably connected to the connecting box (94), the locking post (97) is slidably connected to the connecting box (94), the baffle (92) and the locking post (97) are respectively provided with grooves, and the locking post (97) is inserted into the groove.

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