Hydraulic clamp breaking and buckling device and well repair equipment

Abstract

The utility model belongs to the technical field of petroleum workover equipment, and particularly relates to a hydraulic clamp buckling device and workover equipment, which comprise a shell, a pneumatic motor is arranged at the top of the shell, an impact shaft is fixed at the bottom of the pneumatic motor, and an idle gear is impacted and rotated by the impact shaft. The impact shaft rotates in the shell through impact of the pneumatic motor, an idle gear protective cover wrapping the outer side of the idle gear is fixed to the lower portion of the shell, the lower portion of the shell is fixed to the side end of the hydraulic clamp through the idle gear protective cover, and a transmission assembly connected with the idle gear in a meshed mode is arranged in the hydraulic clamp. The idle gear and a tooth plate seat of the hydraulic clamp are arranged in an impact rotation mode through the pneumatic motor, the impact shaft and the transmission assembly. According to the utility model, the problem caused by the fact that the original structure of the hydraulic clamp is greatly changed by realizing the buckling function is solved, the transmission efficiency of impact force is effectively controlled, the buckling effect is greatly improved, and the buckling effect and efficiency of the hydraulic clamp are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil well workover equipment, and particularly relates to a hydraulic tong unthreading device and a workover equipment. Background Technique

[0002] Oil well workover equipment is an important tool indispensable in oil exploitation and workover operations. They are mainly used for well maintenance, repair, production increase, and fault handling of oil wells. During oil well workover operations, power tongs or hydraulic tongs are usually used to lift out the tubing. However, during the process of lifting out the tubing, it often occurs that it is difficult to unthread the tubing connection due to reasons such as being too tightly connected or being corroded. When encountering the situation where the tubing cannot be unthreaded, currently, workers still use a sledgehammer to strike the tubing connection. After the tubing connection is loosened, power tongs or hydraulic tongs are used to remove the tubing connection. This not only increases the labor intensity of the workers, reduces the unthreading efficiency, but also damages the tubing string due to hammering the tubing connection, reducing the service life of the tubing string.

[0003] There are studies on the problems existing in manually using a sledgehammer to strike the tubing connection for unthreading in the prior art. For example, in the patent application CN113137194A - Automatic Unthreading Workover Power Tongs, through the impact of the vibration force, the connection relationship between the tubing and the tubing connection can be quickly released, solving the problem of damaging the tubing string when currently manually using a sledgehammer to strike the tubing connection. However, although the existing automatic unthreading workover power tongs can ensure the unthreading efficiency, it is still necessary to greatly change the structure of the original power tongs, and it is also very difficult to effectively control the transmission efficiency of the vibration force, thus affecting the unthreading effect. Therefore, a new technical solution is needed to solve the above technical problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic tong unthreading device and a workover equipment to solve the problems in the above background technique that the existing automatic unthreading workover power tongs need to greatly change the structure of the original power tongs, and it is difficult to effectively control the transmission efficiency of the vibration force, thus affecting the unthreading effect.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hydraulic tong unthreading device includes a housing. An air motor is arranged at the top of the housing. An impact shaft is fixed at the bottom of the air motor and impacts and rotates an idler gear through the impact shaft. An interference fit connection is provided inside the idler gear with a transition shaft sleeve and is fixed to the lower part of the impact shaft through the transition shaft sleeve. The impact shaft impacts and rotates inside the housing through the air motor. A idler gear guard covering the outside of the idler gear is fixed at the lower part of the housing and is fixed to the side end of the hydraulic tong through the idler gear guard. A transmission component meshing with the idler gear is arranged inside the hydraulic tong. The idler gear impacts and rotates with the jaw plate seat of the hydraulic tong through the air motor, the impact shaft, and the transmission component.

[0006] Furthermore, an air source port is provided at the top of the pneumatic motor and pneumatic force is input through the air source port to impact the intermediate wheel at the lower part of the impact shaft. A slot is provided at the bottom of the impact shaft and is clamped on the block at the bottom of the pneumatic motor through the slot. Bolts penetrate the four corners of the pneumatic motor and are fixed to the top of the shell by bolt docking.

[0007] Furthermore, the intermediate wheel guard includes an upper clamping plate, a lower clamping plate and an arc plate, the arc plate is overlapped and fixed between the upper clamping plate and the lower clamping plate, and the upper clamping plate is arranged parallel to the lower clamping plate; a bearing is embedded in the inner circumference of each of the upper clamping plate and the lower clamping plate and is rotatably connected to the impact shaft through the bearing.

[0008] Furthermore, an upper extension plate is extended from the part where the upper clamping plate and the arc plate are not overlapped, and is fixed to the top of the side end of the hydraulic pliers by overlapping the upper extension plate; a lower extension plate is extended from the part where the lower clamping plate and the arc plate are not overlapped, and is fixed to the bottom of the side end of the hydraulic pliers by overlapping the lower extension plate.

[0009] Furthermore, the transmission assembly includes a driven wheel A, a transition wheel, a driven wheel B and a rotating disk, the left side of the driven wheel A is meshed with the intermediate wheel, the right front side of the driven wheel A is meshed with the left rear side of the rotating disk and its right rear side is meshed with the left front side of the transition wheel, the right front side of the transition wheel is meshed with the left rear side of the driven wheel B, and the left front side of the driven wheel B is meshed with the right rear side of the rotating disk; the driven wheel B is transmission-connected to the driven wheel A through the transition wheel, the driven wheel A and the driven wheel B are symmetrically arranged relative to the rotating disk, and the center of the rotating disk, the center of the tooth plate seat clamping the oil pipe and the center of the transition wheel are arranged on the same axial direction.

[0010] In addition to the above technical solutions, there is also well repair equipment with the hydraulic clamp buckling device.

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

[0012] 1. By setting the housing fixed to the side end of the hydraulic tong through the idler wheel guard, the unthreading device enables the hydraulic tong to have the unthreading function without changing the original structure of the hydraulic tong, effectively avoiding the problems brought about by significantly changing the original structure of the hydraulic tong to achieve the unthreading function, effectively simplifying the structure and installation process of the unthreading hydraulic tong, reducing its manufacturing cost, and using the pneumatic power of the pneumatic motor to endow the idler wheel with not only the function of assisting the hydraulic tong to clamp the tubing, but also the function of impacting the tubing connection, effectively enhancing the practicality of the hydraulic tong. By adopting the meshing setting of the transmission component and the idler wheel, the pneumatic power of the pneumatic motor can be effectively transmitted to the tubing and the tubing connection under the transmission of the idler wheel and the transmission component, thereby effectively controlling the transmission efficiency of the impact force and greatly enhancing the unthreading effect, ensuring the unthreading effect and efficiency of the hydraulic tong;

[0013] 2. By setting the idler wheel guard wrapped around the outside of the idler wheel, it can not only ensure the safety and stability of the idler wheel operation, but also make the unthreading device more firmly fixed to the hydraulic tong. Adopting the lap joint fixing method enables the hydraulic tong to have the unthreading function without changing its original structure, solving the problem that the original function is restricted due to changing the original mechanism;

[0014] 3. By adopting the meshing connection method, it can not only enable the idler wheel to quickly transmit the rotational force to the rotating disc under the pneumatic power of the pneumatic motor, so that the rotating disc drives the jaw seat to clamp the tubing, ensuring the safety of the tubing connection impact and loosening, but also enable the idler wheel to quickly transmit the impact force to the tubing connection under the impact of the pneumatic power of the pneumatic motor, so that the tubing connection can be loosened under the action of the impact force, ensuring the unthreading effect and efficiency of the hydraulic tong;

[0015] 4. By adopting the symmetrically arranged driven wheel A and driven wheel B, it can not only make the rotating disc more stably impact the tubing connection under the impact of the pneumatic motor driving the idler wheel, but also make the rotating disc more stably assist the jaw seat to unthread under the rotation of the pneumatic motor driving the idler wheel, effectively enhancing the stability of the unthreading and unthreading of the hydraulic tong. At the same time, it can also make the pneumatic impact force and rotational force of the pneumatic motor be transmitted to the rotating disc more stably, effectively enhancing the stability of the transmission of the impact force and rotational force. By setting the centers of the transition wheel, the rotating disc, and the jaw seat clamping the tubing on the same axis, the pneumatic impact force and rotational force can be transmitted to the tubing connection and the tubing more quickly, effectively enhancing the transmission efficiency of the force, so that the tubing can be quickly clamped under the transmission of the rotational force, ensuring the safety of the tubing connection impact and loosening. At the same time, it can also make the tubing connection be quickly loosened under the transmission of the impact force, ensuring the unthreading effect and efficiency of the hydraulic tong, so that the hydraulic tong has the unthreading function while also having the unthreading function, effectively enhancing the practicality of the hydraulic tong. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is Figure 1 schematic cross-sectional structure diagram;

[0018] Figure 3 is a schematic diagram of the structure of the buckle-breaking device of the present utility model;

[0019] Figure 4 is Figure 3 schematic longitudinal-sectional structure diagram.

[0020] Wherein: 1. housing; 2. pneumatic motor; 201. air source port; 202. chuck; 3. impact shaft; 301. card slot; 4. intermediate gear; 5. transition bushing; 6. intermediate gear guard; 601. upper clamping plate; 602. lower clamping plate; 603. arc plate; 7. hydraulic tongs; 701. tooth plate seat; 8. transmission assembly; 801. driven wheel A; 802. idler wheel; 803. rotating disc; 804. driven wheel B; 9. bolt; 10. bearing; 11. upper extension plate; 12. lower extension plate; 13. oil pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following embodiments are used to further illustrate the content of the present utility model and do not limit the application of the present utility model. Embodiment 1:

[0022] Please refer to Figures 1-4The present embodiment provides a hydraulic pliers buckling device, comprising a shell 1 for wrapping an impact shaft 3, a pneumatic motor 2 for providing impact force and rotational force is arranged on the top of the shell 1, bolts 9 are penetrated at the four corners of the pneumatic motor 2 and are fixed to the top of the shell 1 by the bolts 9, an impact shaft 3 for fixing the intermediate wheel is fixed to the bottom of the pneumatic motor 2, and an intermediate wheel 4 for buckling is impacted and rotated by the impact shaft 3, an air source port 201 for providing pneumatic force is arranged on the top of the pneumatic motor 2, and pneumatic force is input through the air source port 201 to impact the intermediate wheel 4 at the lower part of the impact shaft 3, and a transition sleeve for connecting the impact shaft 3 is interference-connected on the inner side of the intermediate wheel 4 5 and is fixed to the lower part of the impact shaft 3 through the transition sleeve 5. The bottom of the impact shaft 3 is provided with a fixing groove 301, which is clamped on the clamping block 202 at the bottom of the pneumatic motor 2 through the groove 301. The impact shaft 3 is impacted and rotated inside the housing 1 by the pneumatic motor 2. The lower part of the housing 1 is fixed with a medium wheel shield 6 wrapped around the outer side of the medium wheel 4 and used to protect the medium wheel 4 and fix the housing 1, and is fixed to the side end of the hydraulic pliers 7 through the medium wheel shield 6. The inside of the hydraulic pliers 7 is provided with a transmission assembly 8 meshed with the medium wheel 4 and used for transmission. The medium wheel 4 is impacted and rotated with the tooth plate seat 701 of the hydraulic pliers 7 through the pneumatic motor 2, the impact shaft 3 and the transmission assembly 8.

[0023] See also Figure 2 The transmission assembly 8 includes a driven wheel A801, a transition wheel 802, a driven wheel B804 and a rotating disk 803. The left side of the driven wheel A801 ​​is meshed with the intermediate wheel 4, the right front side of the driven wheel A801 ​​is meshed with the left rear side of the rotating disk 803, and the right rear side thereof is meshed with the left front side of the transition wheel 802, the right front side of the transition wheel 802 is meshed with the left rear side of the driven wheel B804, the left front side of the driven wheel B804 is meshed with the right rear side of the rotating disk 803, and the driven wheel B804 is meshed with the driven wheel A801 ​​through the transition wheel 802. 1 transmission connection, the driven wheel A801 ​​and the driven wheel B804 are symmetrically arranged relative to the rotating disk 803, so that the driven wheel B804 moves synchronously with the movement of the driven wheel A801, and at the same time, the center of the rotating disk 803, the center of the tooth plate seat 701 clamping the oil pipe 13 and the center of the transition wheel 802 are arranged on the same axial direction, so that the driven wheel A801, the transition wheel 802, the driven wheel B804, the rotating disk 803 and the tooth plate seat 701 can realize an interlocking reaction under the action of the intermediate wheel 4, so as to achieve the purpose of loosening the oil pipe buckle and removing the buckle.

[0024] See also Figures 3-4, the idler wheel guard 6 includes an upper clamping plate 601, a lower clamping plate 602 and an arc plate 603. The arc plate 603 is lapped and fixed between the upper clamping plate 601 and the lower clamping plate 602. The upper clamping plate 601 and the lower clamping plate 602 are respectively arranged in the middle and at the bottom end of the housing 1 and are arranged in parallel. A bearing 10 is respectively embedded in the inner circumferences of the upper clamping plate 601 and the lower clamping plate 602, and the impact shaft 3 is rotatably connected through the bearing 10 in a penetrating manner;

[0025] An upper extension plate 11 for fixing is extended at the non-lapped part of the upper clamping plate 601 and the arc plate 603, and the upper extension plate 11 is lapped and fixed at the top of the side end of the hydraulic tong 7;

[0026] A lower extension plate 12 for fixing is extended at the non-lapped part of the lower clamping plate 602 and the arc plate 603, and the lower extension plate 12 is lapped and fixed at the bottom of the side end of the hydraulic tong 7.

[0027] The working principle and usage process of this embodiment: As Figures 1-4 shown, after the hydraulic tong buckling device is completed, the operator can install the hydraulic tong buckling device at the side end of the hydraulic tong 7, which can effectively control the transmission efficiency of the impact force, greatly improve the buckling effect, ensure the unclamping effect and efficiency of the hydraulic tong, and at the same time solve the problems brought about by significantly changing the original structure of the hydraulic tong to achieve the buckling function;

[0028] When it is difficult to unlock the tubing 13 due to reasons such as the tubing 13 being too tightly connected to the tubing coupling or being corroded, the operator needs to first clamp the tubing 13 in the jaw seat 701 of the hydraulic tong 7, and then send the air source through the air source port 201 to the pneumatic motor 2, so that the pneumatic motor 2 generates pneumatic impact force and rotational force under the input of the air source. At this time, the impact shaft 3 will drive the idler wheel 4 to perform impact and rotation synchronously under the action of the pneumatic impact force and rotational force. Then, by using the interlocking reaction of the meshing connection method, the idler wheel 4 drives the driven wheel A 801, the intermediate wheel 802, and the driven wheel B 804 to perform impact and rotation synchronously. However, the rotating disk 803 will stably perform synchronous impact and rotation along with the synchronous impact and rotation of the idler wheel 4 driving the driven wheel A 801 and the driven wheel B 804. Since the jaw seat 701 is arranged inside the rotating disk 803, when the rotating disk 803 rotates stably along with the rotation of the driven wheel A 801 and the driven wheel B 804, it synchronously drives the jaw seat 701 to quickly and stably clamp the tubing 13. At the same time, when the rotating disk 803 impacts stably along with the impact of the driven wheel A 801 and the driven wheel B 804, it synchronously impacts the tubing coupling quickly and stably, so that the tubing coupling can be quickly loosened under the impact, and then the hydraulic tong 7 is used to unclamp the tubing coupling. Embodiment 2:

[0029] Please refer to Figures 1-4, as another object of the present utility model, there is provided a workover device, in which the above hydraulic tong breakout device is provided. Therefore, the workover device can obtain any of the beneficial effects of the hydraulic tong breakout device described above, which will not be elaborated herein again.

Claims

1. A hydraulic tong breakout device, comprising a housing, characterized in that, A pneumatic motor is provided at the top of the housing. An impact shaft is fixed to the bottom of the pneumatic motor, and an idler gear is rotated by impact through the impact shaft. An interference fit connection is provided on the inner side of the idler gear with a transition bushing, and the idler gear is fixed to the lower part of the impact shaft through the transition bushing. The impact shaft is rotated by impact through the pneumatic motor inside the housing. A idler gear guard covering the outside of the idler gear is fixed to the lower part of the housing and is fixed to the side end of the hydraulic tong through the idler gear guard. A transmission assembly meshing with the idler gear is provided inside the hydraulic tong. The idler gear is rotationally arranged by impact with the jaw plate seat of the hydraulic tong through the pneumatic motor, the impact shaft and the transmission assembly.

2. The hydraulic tong breakout device according to claim 1, characterized in that, A gas source port is provided at the top of the pneumatic motor, and aerodynamic force is input through the gas source port to impact on the idler gear at the lower part of the impact shaft. A clamping groove is provided at the bottom of the impact shaft and is clamped on the clamping block at the bottom of the pneumatic motor through the clamping groove.

3. The hydraulic tong releasing device according to claim 2, characterized in that, Bolts penetrate through the four corners of the pneumatic motor and are fixed to the top of the housing in a butt joint manner.

4. The hydraulic tong releasing device according to claim 1, characterized in that, The idler gear guard includes an upper clamping plate, a lower clamping plate and an arc plate. The arc plate is lap-fixed between the upper clamping plate and the lower clamping plate, and the upper clamping plate and the lower clamping plate are arranged in parallel.

5. The hydraulic tong breakout device according to claim 4, characterized in that, A bearing is embedded on the inner circumferences of the upper clamping plate and the lower clamping plate respectively, and the impact shaft is rotatably connected through the bearing in a penetrating manner.

6. The hydraulic tong breakout device according to claim 4, wherein An upper extension plate is extended at the non-lapped part of the upper clamping plate and the arc plate, and the upper extension plate is lap-fixed to the top of the side end of the hydraulic tong.

7. The hydraulic tong releasing device according to claim 6, characterized in that, A lower extension plate is extended at the non-lapped part of the lower clamping plate and the arc plate, and the lower extension plate is lap-fixed to the bottom of the side end of the hydraulic tong.

8. A hydraulic tong breakout device according to claim 1, wherein, The transmission assembly includes a driven gear A, an intermediate gear, a driven gear B and a rotating disk. The left side of the driven gear A is meshed with the idler gear. The right front side of the driven gear A is meshed with the left rear side of the rotating disk, and the right rear side of the driven gear A is meshed with the left front side of the intermediate gear. The right front side of the intermediate gear is meshed with the left rear side of the driven gear B. The left front side of the driven gear B is meshed with the right rear side of the rotating disk.

9. The hydraulic tong breakout device according to claim 8, wherein The driven gear B is driven by the intermediate gear to be connected with the driven gear A. The driven gear A and the driven gear B are symmetrically arranged with respect to the rotating disk. The centers of the rotating disk, the center of the jaw plate seat for clamping the oil pipe and the center of the intermediate gear are arranged on the same axis.

10. A workover device, characterized in that, It includes a hydraulic tong unclamping device according to any one of claims 1-9.

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