Hydraulic vise position adjustment device and well repair equipment

Abstract

The utility model belongs to the technical field of petroleum workover equipment, concretely relates to a hydraulic tong station adjusting device and workover equipment, including the adjusting frame and the chassis, the longitudinal beam that sets up two hydraulic cylinders in the middle part of chassis is hinged, the piston rod end of two hydraulic cylinders all is hinged on the adjusting frame, the adjusting frame is driven its rotation around the axis of articulation shaft and drives hydraulic tong swing relative to the chassis by the piston rod telescopic drive of hydraulic cylinder, when the adjusting frame swings to the second end of chassis, and the limit support that this end of chassis is perpendicular fixed limits the contact. The utility model has realized the continuous, stable and automatic swing switching of hydraulic tong from the work position to the retreat position, reduced the strength of manual operation, improved the operation efficiency, reduced the operation error and the security risk caused by human factor, ensured that the hydraulic tong in non - working state, the equipment can absolutely stably keep in the retreat position, satisfied the extreme requirement of safety of wellhead unmanned operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil well workover equipment, specifically relating to a hydraulic clamping station adjustment device and well workover equipment. Background Technology

[0002] In oilfield drilling and workover operations, hydraulic tongs play a crucial role as the primary tool for attaching and detaching threads. Traditional hydraulic tongs largely rely on manual operation, which is not only labor-intensive and inefficient but also poses certain safety risks. With the increasing automation of workover operations, unmanned wellhead operation has become an industry trend, thus placing higher demands on the automated transfer and attitude adjustment of hydraulic tongs.

[0003] Currently, precise positioning of hydraulic tongs has been achieved through the use of transfer devices, such as patent CN117468875A - a transfer device for drill pipe power tongs. Through the cooperation of the trolley assembly, guide rail structure, moving structure and lifting structure, it realizes the forward and backward movement and lifting function of the power tongs, which reduces the intensity of manual operation to a certain extent and is suitable for small drilling rigs. However, there are still obvious limitations in practical applications: especially when working at the wellhead, the wellhead tubing often has a certain well inclination angle, making it difficult to adjust the tilt of the power tongs, resulting in difficulty in aligning the tong jaws with the tubing, affecting the efficiency and quality of attaching and detaching, and even requiring manual intervention, which cannot meet the requirements of fully automated operation.

[0004] Existing technologies include research on adjusting the posture and angle of the hydraulic tongs, such as patent CN110273644A – a transfer, lifting, and tilting mechanism for a hydraulic tong. This mechanism optimizes the transfer and tilting mechanism of the hydraulic tongs to achieve automated operation and rapid position adjustment, meeting the high-efficiency requirements of modern drilling and well workover operations. However, its structure is relatively complex, especially in angle adjustment where it is difficult to ensure operational continuity. Furthermore, existing hydraulic tongs struggle to maintain balance when retracting, severely impacting the stability of the hydraulic tongs' position adjustment. Therefore, a new technical solution is needed to address these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic tongs position adjustment device and well workover equipment to solve the problems mentioned in the background art, such as the complex structure of the current hydraulic tongs automated position adjustment device, the difficulty in ensuring the continuity of operation in particular in terms of position adjustment, and the difficulty in maintaining the balance of the existing hydraulic tongs when retracting, which seriously affects the stability of the hydraulic tongs position adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic clamping station adjustment device, comprising an adjustment frame and a base frame. A support is vertically fixed to the first end of the base frame. The top of the support is hinged to the bottom of the adjustment frame via a hinge shaft. A suspension bracket is fixed to the top of the adjustment frame near the first end of the base frame. A hydraulic clamp is hinged to the bottom of the suspension bracket via a pin. A longitudinal beam is fixed to the middle of the base frame. Two hydraulic cylinders are hinged to the longitudinal beam. The piston rods of both hydraulic cylinders are hinged to the adjustment frame. On the frame, the adjusting frame is driven to rotate around the axis of the hinge shaft by the extension and retraction of the piston rod of the hydraulic cylinder, which in turn causes the hydraulic clamp to swing relative to the base frame. When the adjusting frame swings to the second end of the base frame, it makes contact with the limiting support that is vertically fixed at that end of the base frame. The limiting support includes limiting post A and limiting post B, which are symmetrically arranged relative to the base frame. The first end of the base frame is also provided with a rotating disk, which drives the base frame to drive the adjusting frame and the hydraulic clamp to rotate synchronously. An automatic shifting mechanism is installed on the hydraulic clamp.

[0007] Furthermore, the support includes four hinged columns of different heights, namely hinged column A, hinged column B, hinged column C, and hinged column D. Hinged column D and hinged column B are of equal length and symmetrically arranged with respect to the base frame. Hinged column C and hinged column A are of equal length and symmetrically arranged with respect to the base frame. Hinged columns A and B are arranged along the first side of the base frame and their height decreases from the first end to the second end. Hinged columns C and D are arranged along the second side of the base frame and their height decreases from the first end to the second end. The four hinged columns are respectively hinged to the four swing arms at the bottom of the adjustment frame via hinge shafts.

[0008] Furthermore, the limiting post A and the hinge post B and hinge post A are located on the same side of the base frame and their height increases from the second end to the first end. The limiting post B and the hinge post D and hinge post C are located on the other side of the base frame and their height increases from the second end to the first end. The upper ends of the two swing arms located on the adjustment frame away from the first end of the base frame are respectively in limiting contact with the top ends of the limiting post A and the limiting post B. A crossbeam is erected between the two swing arms located on the adjustment frame near the first end of the base frame. A fixing plate is fixed at each end of the crossbeam, and the piston rod end of the hydraulic cylinder is hinged to the bottom end of the fixing plate.

[0009] Furthermore, the adjustment frame is provided with four support arms in the middle, and the bottom of the four support arms is respectively hinged to the top of the four swing arms. The length of the two support arms closer to the first end of the base frame is less than the length of the two support arms farther away from the first end of the base frame. The tops of the four support arms are on the same plane, and a suspension platform located on the upper part of the adjustment frame is fixed on the plane. The top of the suspension platform is fixed with a reinforcing rib plate and is fixedly connected to the suspension bracket through the reinforcing rib plate.

[0010] In addition to the above technical solutions, there are also well workover equipment equipped with this hydraulic tongs position adjustment device.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model adopts a hinged base structure of base frame and adjustment frame, which effectively simplifies the structure, reduces manufacturing and maintenance costs, and also reduces the probability of failure. Based on this, the design of directly driving the hydraulic clamp to rotate around the hinge axis through two hydraulic cylinders drives the hydraulic clamp to swing relative to the base frame, realizing a continuous, smooth and automated swinging switch of the hydraulic clamp from the working position to the retracted position. This significantly reduces the intensity of manual operation, improves the efficiency of operation, and also reduces the operational errors and safety risks caused by human factors. The purely mechanical hard limit design, which makes contact with the limit support when the adjustment frame swings to the second end of the base frame, allows the hydraulic clamp to be physically supported by the limit support when it reaches the retracted position. There is no need for the hydraulic system to continuously maintain pressure to maintain the position, which completely eliminates the risk of the hydraulic clamp falling accidentally due to hydraulic system leakage. It also ensures that the equipment can be absolutely stable in the retracted position when the hydraulic clamp is not in operation, meeting the ultimate safety requirements of unmanned wellhead operation, and realizing the efficient, stable and safe operation of the hydraulic clamp in automated operation.

[0013] 2. This utility model hinges the hydraulic clamp to the suspension bracket via a pin, ensuring that the hydraulic clamp can swing slightly around the pin with one degree of freedom when it is sent to the working position by the adjustment frame to engage the tubing string. This solves the problem of wellhead inclination or misalignment of the tubing string. Furthermore, the spring built into the suspension bracket allows the hydraulic clamp to adaptively "float" and align with the center of the tubing string, ensuring optimal engagement between the clamp head and the tubing string. This greatly improves the success rate and efficiency of engaging and disengaging the clamp, and reduces damage to the equipment.

[0014] 3. This utility model is designed with four hinged columns A, B, C and D of different heights and symmetrically distributed, with their heights decreasing from the first end to the second end of the base frame. This design not only allows the adjusting frame to form a smoother and more precise trajectory during the swinging process, helping to reduce the impact and vibration during the swinging process, and improving the working stability and operation quality of the hydraulic tongs, but also allows the adjusting frame to have an inherent tilt angle that matches the potential tilt angle of the wellhead tubing at the initial (i.e., working position) stage, rather than a simple horizontal hinge. This greatly simplifies the final centering adjustment required after the hydraulic tongs reach the working position and improves the accuracy and efficiency of the initial centering.

[0015] 4. This utility model, by setting up a crossbeam between the two swing arms near the first end of the base frame of the adjustment frame, and hinged to the piston rod end of the hydraulic cylinder by a fixing plate, allows the two hydraulic cylinders to push a crossbeam synchronously, which is equivalent to forming a powerful couple. This provides a huge and stable torque for the swing of the adjustment frame, enhances the overall structural strength of the adjustment frame, ensures that the thrust of the hydraulic cylinder is effectively converted into rotational motion, prevents structural deformation caused by excessive local stress, and improves the rigidity and durability of the entire device.

[0016] 5. This utility model uses symmetrically arranged limiting columns A and B, so that when the adjusting frame swings to the retraction position, the upper end of its swing arm will make large-area surface contact with the top of the limiting column, ensuring the accuracy of the limiting position and ensuring the consistency of the retraction position each time. This allows the adjusting frame to resist external impacts and vibrations when it is in the retraction position, perfectly solving the core problem of "poor balance in the retraction position". On this basis, the decreasing gradient of the hinge column and the increasing gradient of the limiting column together form a perfect motion envelope, guiding the adjusting frame to move in the most optimized and natural trajectory, reducing unnecessary energy loss and structural wear.

[0017] 6. This utility model uses four support arms to hinge the swing arm, and finally supports a horizontal suspension platform. The hinge of the support arms and the swing arm forms a four-bar linkage, so that the suspension platform can always maintain a nearly horizontal state during the swing of the adjustment frame. This ensures that the hydraulic clamp itself is in the optimal working posture, eliminates the problem of abnormal angle of the hydraulic clamp caused by the tilt of the adjustment frame, and further guarantees the accuracy and quality of the upper and lower buckles.

[0018] 7. By setting a rotating disk at the first end of the base frame, this utility model enables the entire workstation adjustment device to rotate 360° around the wellhead, allowing it to quickly align the tubing at different positions of the wellhead, greatly enhancing the adaptability and operational efficiency of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the workstation adjustment device of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure for removing hydraulic clamps;

[0021] Figure 3 for Figure 2 Structural diagram with the base frame removed;

[0022] Figure 4 for Figure 1 Structural diagram of the mid-base frame;

[0023] Figure 5This is a schematic diagram of the hydraulic clamp of this utility model in the working position;

[0024] Figure 6 This is a schematic diagram of the hydraulic clamp of this utility model in the retracted position.

[0025] The components include: 1. Adjustment frame; 101. Swing arm; 102. Support arm; 2. Base frame; 3. Support; 301. Hinge column A; 302. Hinge column B; 303. Hinge column C; 304. Hinge column D; 4. Hinge shaft; 5. Suspension platform; 6. Reinforcing rib plate; 7. Suspension bracket; 8. Pin shaft; 9. Hydraulic clamp; 10. Automatic gear shifting mechanism; 11. Longitudinal beam; 12. Hydraulic cylinder; 13. Fixing plate; 14. Crossbeam; 15. Limit support; 1501. Limit column A; 1502. Limit column B; 16. Rotating disc. Detailed Implementation

[0026] The following embodiments are used to further illustrate the content of this utility model, and do not limit the application of this utility model. Example 1:

[0027] Please see Figures 1-6 This embodiment provides a hydraulic clamping station adjustment device, including an adjustment frame 1 and a base frame 2. The first end of the base frame 2 is vertically fixed with a support 3 for supporting the adjustment frame 1. The top of the support 3 is hinged to the bottom of the adjustment frame 1 through a hinge shaft 4. The first end of the base frame 2 is also provided with a rotating disk 16. The rotating disk 16 drives the base frame 2 to drive the adjustment frame 1 and the hydraulic clamp 9 to rotate synchronously.

[0028] The support 3 includes four hinged columns of different heights: hinged column A301, hinged column B302, hinged column C303, and hinged column D304. Hinged column D304 and hinged column B302 are of equal length and are symmetrically arranged with respect to the base frame 2. Hinged column C303 and hinged column A301 are of equal length and are symmetrically arranged with respect to the base frame 2. Hinged columns A301 and B302 are arranged along the first side of the base frame 2 and their height decreases from the first end to the second end. Hinged columns C303 and D304 are arranged along the second side of the base frame 2 and their height decreases from the first end to the second end. The four hinged columns are respectively hinged to the four swing arms 101 at the bottom of the adjustment frame 1 through hinge shafts 4.

[0029] The tops of the four swing arms 101 are respectively hinged to the bottoms of the four support arms 102 located in the middle of the adjustment frame. The lengths of the two support arms 102 closer to the first end of the base frame 2 are shorter than the lengths of the two support arms 102 farther from the first end of the base frame 2. The tops of the four support arms 102 are on the same plane, and a suspension platform 5 located on the upper part of the adjustment frame 1 is fixed on this plane. A reinforcing rib plate 6 is fixed to the top of the suspension platform 5, and a suspension bracket 7 is fixed through the reinforcing rib plate 6. The suspension bracket 7 has a built-in spring to meet the floating requirements of the hydraulic clamp 9 during the buckling process. The suspension bracket 7 is located on the side of the top of the adjustment frame 1 close to the first end of the base frame 2, and its bottom is hinged to the hydraulic clamp 9 through a pin 8. An automatic shifting mechanism 10 is installed on the hydraulic clamp 9 to automatically switch between high and low gears during the buckling process of the hydraulic clamp 9.

[0030] A longitudinal beam 11 is fixed in the middle of the base frame 2. Two hydraulic cylinders 12 are hinged on the longitudinal beam 11. A fixing plate 13 is hinged to the piston rod end of each of the two hydraulic cylinders 12. The two fixing plates 13 are respectively fixed to the two ends of a crossbeam 14 erected between the two swing arms 101 near the first end of the base frame 2 of the adjustment frame 1.

[0031] The piston rod of the hydraulic cylinder 12 extends and retracts, driving the adjusting frame 1 to rotate around the axis of the hinge shaft 4 and causing the hydraulic clamp 9 to swing relative to the base frame 2. When the adjusting frame 1 swings to the second end of the base frame 2, it makes a limiting contact with the limiting support 15 that is vertically fixed at that end of the base frame 2.

[0032] The limiting support 15 includes limiting post A1501 and limiting post B1502. Limiting post A1501 and limiting post B1502 are symmetrically arranged relative to the base frame 2. Limiting post A1501 is located on the same side of the base frame 2 as hinge post B302 and hinge post A301, and their height increases from the second end to the first end. Limiting post B1502 is located on the other side of the base frame 2 as as hinge post D304 and hinge post C303, and their height increases from the second end to the first end. The upper ends of the two swing arms 101 located at the first end of the adjusting frame 1 away from the base frame 2 respectively make limiting contact with the top ends of limiting post A1501 and limiting post B1502, so that when the adjusting frame 1 swings to the retraction position, the upper ends of its swing arms 101 will make large-area surface contact with the top ends of the limiting posts, ensuring the accuracy of the limiting position and ensuring the consistency of the retraction position each time.

[0033] The working principle and usage process of this utility model are as follows: Figures 1-6As illustrated, after the hydraulic tongs position adjustment device is assembled, the operator installs the entire device onto the workover equipment (the functions and structures of conventional equipment such as workover equipment are well known in the field, and the connection settings are also common knowledge, so they will not be described in detail here, nor are they shown in the attached drawings). The purpose is to achieve continuous, smooth, and automated swing switching of the hydraulic tongs from the working position to the retracted position, which significantly reduces the intensity of manual operation, improves the efficiency of operation, reduces operational errors and safety risks caused by human factors, and also ensures that the equipment can be absolutely stable in the retracted position when the hydraulic tongs are not in operation, meeting the ultimate safety requirements of unmanned wellhead operation, and realizing the efficient, stable, and safe operation of automated hydraulic tongs operation.

[0034] Since the hydraulic cylinder 12, hydraulic clamp 9, and their automatic shifting mechanism 10 are all operated by the controller (the functions and structures of conventional equipment such as controllers are well known in the art, and the connection settings are also common knowledge, so they will not be described in detail here, nor are they shown in the attached drawings), when pipe pulling is required, after the operator has prepared the wellhead tubing, they first control the piston rod of the hydraulic cylinder 12 to extend by operating the controller. At this time, the entire adjusting frame 1 (including four swing arms 101, four support arms 102, suspension platform 5, and suspension bracket 7) will drive the hydraulic clamp 9 on the suspension bracket 7 to swing to the working position on the base frame 2 under the extension of the piston rod (e.g., Figure 5 As shown), the automatic shifting mechanism 10 is then switched to a low gear by the operating controller. The hydraulic clamp 9 unfastens one turn in the low gear. Then, the automatic shifting mechanism 10 is switched to a high gear by the operating controller. The hydraulic clamp 9 unfastens completely in the high gear. Then, the automatic shifting mechanism 10 is switched back to a low gear by the operating controller. The hydraulic clamp 9 aligns with the notch in the low gear. Then, the automatic shifting mechanism 10 is switched back to a high gear by the operating controller. Simultaneously, the piston rod of the hydraulic cylinder 12 is retracted by the operating controller. The entire adjusting frame 1 will cause the hydraulic clamp 9 on the suspension bracket 7 to swing to the retracted position on the base frame 2 under the retraction of the piston rod (as shown). Figure 6 (As shown), the pipe-lifting operation is now complete;

[0035] When tubing installation is required, after the operator prepares the wellhead tubing, they first control the piston rod of hydraulic cylinder 12 to extend using the operating controller. At this time, the entire adjusting frame 1 will swing the hydraulic clamp 9 on the suspension bracket 7 to the working position on the base frame 2 as the piston rod extends. Figure 5As shown), the hydraulic clamp 9 is automatically engaged and engaged by the operating controller until the engagement is complete. Then, the automatic shifting mechanism 10 is switched to a lower gear by the operating controller. The hydraulic clamp 9 engages with the notch in the lower gear. Then, the automatic shifting mechanism 10 is switched to a higher gear by the operating controller. At the same time, the piston rod of the hydraulic cylinder 12 is retracted by the operating controller. The entire adjusting frame 1 will swing the hydraulic clamp 9 on the suspension bracket 7 to the retracted position on the base frame 2 under the retraction of the piston rod (as shown). Figure 6 As shown in the figure, the pipe laying operation is completed. Example 2:

[0036] Please see Figures 1-6 As another objective of this utility model, a well workover device is provided, which is equipped with the above-mentioned hydraulic tong position adjustment device. Therefore, the well workover device can obtain any of the beneficial effects of the hydraulic tong position adjustment device described above, which will not be repeated here.

Claims

1. A hydraulic fitter station adjustment device, comprising an adjustment frame and a base frame, characterized in that, The first end of the base frame is vertically fixed with a support. The top of the support is hinged to the bottom of the adjustment frame via a hinge shaft. A suspension bracket is fixed to the top of the adjustment frame near the first end of the base frame. A hydraulic clamp is hinged to the bottom of the suspension bracket via a pin shaft. A longitudinal beam is fixed in the middle of the base frame. Two hydraulic cylinders are hinged to the longitudinal beam. The piston rods of the two hydraulic cylinders are hinged to the adjustment frame. The adjustment frame is driven to rotate around the axis of the hinge shaft by the extension and retraction of the piston rods of the hydraulic cylinders, which in turn causes the hydraulic clamp to swing relative to the base frame. When the adjustment frame swings to the second end of the base frame, it makes a limiting contact with the limiting support that is vertically fixed to that end of the base frame.

2. The hydraulic clamping station adjustment device according to claim 1, characterized in that, The support includes four hinged columns of different heights, namely hinged column A, hinged column B, hinged column C and hinged column D. Hinged column D and hinged column B are of equal length and are symmetrically arranged with respect to the base frame. Hinged column C and hinged column A are of equal length and are symmetrically arranged with respect to the base frame.

3. The hydraulic clamping station adjustment device according to claim 2, characterized in that, The hinged column A and hinged column B are arranged along the first side of the base frame and their height decreases from the first end to the second end. The hinged column C and hinged column D are arranged along the second side of the base frame and their height decreases from the first end to the second end. The four hinged columns are respectively hinged to the four swing arms at the bottom of the adjustment frame through hinge shafts.

4. The hydraulic clamping station adjustment device according to claim 3, characterized in that, A crossbeam is installed between the two swing arms located near the first end of the base frame of the adjustment frame. A fixing plate is fixed at each end of the crossbeam, and the piston rod end of the hydraulic cylinder is hinged to the bottom end of the fixing plate.

5. A hydraulic clamping station adjustment device according to claim 4, characterized in that, The limiting support includes limiting post A and limiting post B, which are symmetrically arranged with respect to the base frame. Limiting post A, hinge post B, and hinge post A are located on the same side of the base frame and their height increases from the second end to the first end. Limiting post B, hinge post D, and hinge post C are located on the other side of the base frame and their height increases from the second end to the first end.

6. A hydraulic clamping station adjustment device according to claim 5, characterized in that, The upper ends of the two swing arms located at the first end of the adjustment frame away from the base frame are respectively in limiting contact with the top ends of the limiting post A and the limiting post B.

7. A hydraulic clamping station adjustment device according to claim 3, characterized in that, The adjustment frame has four support arms in the middle. The bottom of the four support arms is hinged to the top of the four swing arms respectively. The length of the two support arms closer to the first end of the base frame is less than the length of the two support arms farther away from the first end of the base frame.

8. A hydraulic clamping station adjustment device according to claim 7, characterized in that, The tops of the four support arms are on the same plane, and a suspension platform located on the upper part of the adjustment frame is fixed on the plane. The top of the suspension platform is fixed with a reinforcing rib plate and is fixedly connected to the suspension bracket through the reinforcing rib plate.

9. A hydraulic clamping station adjustment device according to claim 1, characterized in that, The first end of the base frame is also provided with a rotating disk, which drives the base frame to rotate synchronously with the adjusting frame and the hydraulic clamp. The hydraulic clamp is equipped with an automatic shifting mechanism.

10. A well workover device, characterized in that, Includes the hydraulic fitter station adjustment device as described in any one of claims 1-9.

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