Convertible attitude single bore power elevator sucker

Abstract

This invention discloses a convertible single-sleeve power lifting clamp, comprising a lifting clamp assembly. The lifting clamp assembly is composed of an upper top plate, a lower bottom plate, a support block assembly, and a hollow support rod, which are fixed together by a fixing bolt assembly. The lifting clamp assembly is equipped with a retaining ring assembly, and the lower bottom plate has a retaining ring groove that matches the retaining ring assembly. The lifting clamp assembly is equipped with a power assembly that matches the retaining ring assembly. A U-shaped opening is provided on the side of the lifting clamp assembly, and lifting lugs are installed on the lifting clamp assembly. In this device, the rotation of the driving worm gear enables the retaining ring with a worm gear to slide and rotate within the retaining ring groove. Opening and closing retaining pins are used to accurately position the retaining ring in its open or closed position, thereby opening or closing the U-shaped opening on the side of the lifting clamp assembly, allowing the lifting clamp assembly to be smoothly installed on the sleeve and enabling the lifting clamp assembly to grip the sleeve.

Description

Technical Field

[0001] This invention relates to the field of automation technology for top drive casing operation, and more specifically, to a single casing power lifting clamp with convertible posture. Background Technology

[0002] Top drive casing running operations require picking up individual casing pipes from the burrow or ramp of the drilling rig, hoisting them to the wellhead, and then connecting them one by one to form a casing string before lowering them into the well. A casing running device is an auxiliary device used in top drive drilling equipment (top drive) for casing running operations. It enables rapid equipment installation, rapid casing retrieval and connection, and casing string lowering. During lowering, circulation and rotation can be achieved, improving the casing running method, reducing the difficulty of casing running, and saving running time.

[0003] Currently, there are two methods for lifting a single casing in top drive casing operation. One method is to grab the single casing that is being lifted by a crane at a slope and is in an inclined state. The lifting clamp for grabbing the single casing needs to be in an inclined state that is perpendicular to the single casing.

[0004] Another method involves grabbing a single casing that has been pre-lifted by a pneumatic winch and placed vertically into the mouse hole. The clamp used to grab the single casing needs to be in a horizontal position perpendicular to the single casing.

[0005] Currently, two methods are used to grab the casing in top drive casing operations. One method involves connecting the extension lifting ring, which is connected to the top drive lifting ring, to the casing lifting clamp. The casing is grabbed by the top drive controlling the lifting ring and coordinating with manual operation. Since the boom consists of the top drive lifting ring and the extension lifting ring, the boom is in a flexible state, making top drive operation cumbersome and casing grabbing inefficient.

[0006] Another method involves a dedicated single lifting ring connected to a single lifting clamp at the bottom of the top drive casing lowering device. Both of these casing gripping methods require additional drilling operators to open and lock the lifting clamp latches during the casing gripping process, increasing the drilling operator's labor intensity and the risk of injury.

[0007] Therefore, we propose a single-sleeve dynamic lifting clamp with convertible posture to solve the above problems. Summary of the Invention

[0008] To overcome the aforementioned shortcomings of the prior art, embodiments of the present invention provide a convertible single-casing power lifting clamp. This aims to address the problem that existing top-drive casing lowering devices require manual intervention during casing gripping operations, resulting in cumbersome top-drive operation, low casing gripping efficiency, and increased labor intensity and injury risk for drilling workers. Simultaneously, the clamp allows for convenient adjustment to accommodate both inclined and vertical single-casing lifting methods.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a single-sleeve power lifting clamp with convertible posture, comprising a lifting clamp assembly; the lifting clamp assembly is formed by fixing an upper top plate, a lower bottom plate, a support block assembly, and a hollow support rod by a fixing bolt assembly; the lifting clamp assembly is provided with a retaining ring assembly, and the lower bottom plate is provided with a retaining ring groove that matches the retaining ring assembly; the lifting clamp assembly is provided with a power assembly that matches the retaining ring assembly; the side of the lifting clamp assembly is provided with a U-shaped opening, and the lifting clamp assembly is equipped with lifting lugs.

[0010] In this device, the rotation of the drive worm gear enables the retaining ring with the turbine to slide and rotate within the retaining ring groove. The opening and closing retaining pins are used to accurately position the retaining ring in its open or closed position, thereby enabling the U-shaped opening on the side of the main body of the lifting clamp assembly to open or close, thus allowing the lifting clamp assembly to be smoothly installed on the sleeve and enabling the lifting clamp assembly to grip the sleeve.

[0011] In a preferred embodiment, the support block assembly includes a left support block and a right support block located between the upper top plate and the lower bottom plate. The upper top plate and the lower bottom plate are symmetrically arranged vertically, the hollow support rod is located between the upper top plate and the lower bottom plate, and the fixing bolt assembly passes through the lower bottom plate, the hollow support rod, and the upper top plate in sequence and extends upwards.

[0012] In this device, the arrangement of the left and right support blocks, as well as the upper and lower plates, improves the stability of the lifting clamp assembly and indirectly enhances the device's practicality.

[0013] In a preferred embodiment, the retaining ring assembly includes an open retaining ring mounted in a retaining ring groove, a turbine connected to the open retaining ring, and an opening stop pin and a closing stop pin for opening or closing the open retaining ring on the hanger assembly. The open retaining ring has a notch that matches the U-shaped opening on the hanger assembly.

[0014] When the turbine rotates, the open retaining ring rotates accordingly, allowing the notch on the open retaining ring to align with the U-shaped opening on the hanger assembly. This facilitates the insertion of the sleeve into the hanger assembly, making subsequent sleeve installation easier.

[0015] In a preferred embodiment, the power assembly includes a drive base mounted on a lifting clamp assembly. A drive component is mounted on the drive base, and a coupling is fixedly connected to the output end of the drive component. A bearing through which the coupling passes is connected to the drive base. One end of the coupling is fixedly connected to a worm gear meshing with a turbine. A bearing housing for supporting the worm gear is mounted on the lifting clamp assembly. The drive component is a hydraulic motor or a servo motor, and the drive base is a hydraulic motor housing or a motor housing.

[0016] When the drive unit is working, the worm gear can rotate, which in turn can rotate the turbine, thereby causing the open retaining ring to rotate, which facilitates the subsequent use of the device.

[0017] In a preferred embodiment, the hanger assembly is provided with an adjustable counterweight. The adjustable counterweight is fixed to the hanger assembly by means of a fixing pin assembly passing through pin holes at different positions on the adjustable counterweight.

[0018] In order to facilitate the quick and easy conversion between the horizontal and inclined positions of the lifting clamp, and thus complete the task of lifting the sleeve in both vertical and inclined modes, an adjustable counterweight is configured, and a fixing pin assembly passes through pin holes at different positions on the adjustable counterweight and is fixed to the lifting clamp body.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. In this device, the casing lowering device does not require manual operation during the casing lowering operation, which further reduces the number of steps in the top drive operation, improves the efficiency of casing gripping, reduces the labor intensity of drilling rig operators, and lowers the probability of drilling rig operators being injured.

[0021] 2. In this device, the lifting clamp assembly can be easily adjusted to suit both inclined and vertical lifting methods for a single sleeve. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA surface;

[0024] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB surface;

[0025] Figure 4 This is a schematic diagram of the horizontal posture structure of the convertible single-sleeve power lifting clamp of the present invention (suitable for the rat hole lifting method when the sleeve is in a vertical state);

[0026] Figure 5 This is a schematic diagram of the tilting posture structure of the single-sleeve power lifting clamp with convertible posture according to the present invention (suitable for lifting the sleeve at a ramp where the sleeve is tilted).

[0027] The attached diagram is labeled as follows: 1. Lifting clamp assembly, 2. Left support block, 3. Adjustable counterweight, 4. Closing stop pin, 5. Opening stop pin, 6. Drive component, 7. Drive seat, 8. Coupling, 9. Bearing, 10. Worm gear, 11. Open retaining ring, 12. Bearing seat, 13. Right support block, 14. Top plate, 15. Fixing pin assembly, 16. Lifting lug, 17. Retaining ring groove, 18. Hollow support rod, 19. Fixing bolt assembly, 20. Bottom plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Reference Figure 1-5 A single-sleeve power lifting clamp with convertible posture includes a lifting clamp assembly 1. The lifting clamp assembly 1 is formed by an upper top plate 14, a lower bottom plate 20, a support block assembly, and a hollow support rod 18, which are fixed by a fixing bolt assembly 19. The support block assembly includes a left support block 2 and a right support block 13 located between the upper top plate 14 and the lower bottom plate 20. The upper top plate 14 and the lower bottom plate 20 are symmetrically arranged vertically. The hollow support rod 18 is located between the upper top plate 14 and the lower bottom plate 20. The fixing bolt assembly 19 passes through the lower bottom plate 20, the hollow support rod 18, and the upper top plate 14 in sequence and extends upward. The side of the lifting clamp assembly 1 is provided with a U-shaped opening, and a lifting lug 16 is installed on the lifting clamp assembly 1.

[0030] In this device, the arrangement of the left support block 2 and the right support block 13, as well as the upper top plate 14 and the lower bottom plate 20, improves the stability of the lifting clamp assembly 1, indirectly enhancing the practicality of the device. Then, by installing the lifting lugs on the lifting clamp assembly 1, the normal use of the device is further guaranteed.

[0031] The lifting clamp assembly 1 is equipped with a retaining ring assembly, which includes an open retaining ring 11 installed in the retaining ring groove 17. A turbine is connected to the open retaining ring 11. The lifting clamp assembly 1 is equipped with an opening stop pin 5 and a closing stop pin 4 for opening or closing the open retaining ring 11. The opening stop pin 5 and the closing stop pin 4 are used to accurately position the open or closed position of the open retaining ring 11, thereby opening or closing the U-shaped opening on the side of the lifting clamp assembly 1, so as to smoothly install the lifting clamp assembly 1 on the sleeve and realize the gripping of the sleeve by the lifting clamp assembly 1. The lower base plate 20 is equipped with a retaining ring groove 17 that matches the retaining ring assembly, and the open retaining ring 11 is equipped with a notch that matches the U-shaped opening on the lifting clamp assembly 1.

[0032] The lifting clamp assembly 1 is equipped with a power assembly that matches the retaining ring assembly. The power assembly includes a drive seat 7 mounted on the lifting clamp assembly 1, a drive component 6 mounted on the drive seat 7, the drive component 6 being a hydraulic motor or a servo motor, and the drive seat 7 being a hydraulic motor mount or a motor mount. The output end of the drive component 6 is fixedly connected to a coupling 8, and a bearing 9 through which the coupling 8 passes is connected to the drive seat 7. One end of the coupling 8 is fixedly connected to a worm gear 10 that meshes with a turbine. The lifting clamp assembly 1 is equipped with a bearing seat 12 for supporting the worm gear 10.

[0033] The worm gear 10, bearing 9, bearing housing 12, hydraulic motor (or motor) housing, and turbine on the open retaining ring 11 form a worm gear mechanism. The hydraulic motor or servo (stepper) motor is fixed to the hydraulic motor (or motor) housing by screws and connected to the worm gear 10 through the coupling 8. By driving the rotation of the worm gear 10, the open retaining ring 11 with the turbine slides and rotates in the retaining ring groove 17. The opening stop pin 5 and closing stop pin 4 are used to accurately position the open or closed position of the open retaining ring 11, thereby realizing the opening or closing of the U-shaped opening on the side of the lifting clamp assembly 1, so as to smoothly install the lifting clamp assembly 1 on the sleeve and realize the lifting clamp gripping the sleeve.

[0034] The lifting clamp assembly 1 is equipped with an adjustable counterweight 3. The adjustable counterweight 3 is fixed to the lifting clamp assembly 1 by passing through pin holes at different positions on the adjustable counterweight 3 through the fixing pin assembly 15. In order to facilitate and quickly realize the conversion between horizontal and inclined postures of the lifting clamp assembly 1, and thus complete the task of lifting the sleeve in both vertical and inclined modes, the adjustable counterweight 3 is configured and fixed to the lifting clamp assembly 1 by passing through pin holes at different positions on the adjustable counterweight 3 through the fixing pin assembly 19.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0037] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A single-sleeve power hanger with convertible posture, including a hanger assembly (1); The hanging clamp assembly (1) is formed by fixing an upper top plate (14), a lower bottom plate (20), a support block assembly, and a hollow support rod (18) together with a fixing bolt assembly (19). Its characteristic is that... The hanging clamp assembly (1) is provided with a retaining ring assembly, and the lower base plate (20) is provided with a retaining ring groove (17) that matches the retaining ring assembly. The hanger assembly (1) is equipped with a power assembly that matches the retaining ring assembly; The side of the hanging clamp assembly (1) is provided with a U-shaped opening, and the hanging clamp assembly (1) is equipped with a lifting lug (16). The retaining ring assembly includes an open retaining ring (11) installed in the retaining ring groove (17), a worm gear is connected to the open retaining ring (11), and the hanging clamp assembly (1) is provided with an opening stop pin (5) and a closing stop pin (4) for opening or closing the open retaining ring (11). The power assembly includes a drive seat (7) mounted on a hanger assembly (1), a drive component (6) mounted on the drive seat (7), a coupling (8) fixedly connected to the output end of the drive component (6), a bearing (9) through which the coupling (8) passes on the drive seat (7), a worm (10) meshing with a worm gear fixedly connected to one end of the coupling (8), and a bearing seat (12) for supporting the worm (10) mounted on the hanger assembly (1). The hanging clamp assembly (1) is equipped with an adjustable counterweight (3) whose position can be adjusted. The adjustable counterweight (3) is fixed to the hanging clamp assembly (1) by passing through pin holes at different positions on the adjustable counterweight (3) via a fixing pin assembly (15).

2. The single-sleeve power lifting clamp with convertible posture according to claim 1, characterized in that: The support block assembly includes a left support block (2) and a right support block (13) located between the upper top plate (14) and the lower bottom plate (20).

3. The single-sleeve power lifting clamp with convertible posture according to claim 1, characterized in that: The upper top plate (14) and the lower bottom plate (20) are arranged symmetrically, the hollow support rod (18) is located between the upper top plate (14) and the lower bottom plate (20), and the fixing bolt assembly (19) passes through the lower bottom plate (20), the hollow support rod (18) and the upper top plate (14) in sequence and extends upward.

4. The convertible single-sleeve power lifting clamp according to claim 1, characterized in that: The opening retaining ring (11) has a notch that matches the U-shaped opening on the hanger assembly (1).

5. The single-sleeve power lifting clamp with convertible posture according to claim 1, characterized in that: The drive unit (6) is a hydraulic motor or a servo motor, and the drive base (7) is a hydraulic motor base or a motor base.

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