Pneumatic slip with safety device

Abstract

The utility model relates to the technical field of pneumatic slips, in particular to a pneumatic slip with a safety device, which comprises a slip body, an upper base and a lower base, the slip body is provided with a pin-driven turntable bushing, the slip body is connected with the pin-driven turntable bushing in a sliding manner, the lower base is provided with a locking pin, and the locking pin is connected with the upper base in a sliding manner. The lower base is connected to the pin driving rotary disc bushing through the locking pin, the upper base is rotationally provided with a connecting rod, the connecting rod is rotationally connected with the slip body, the lower base is rotationally provided with a connecting air cylinder, a piston rod of the connecting air cylinder is rotationally connected with the upper base, and a limiting assembly is arranged between the upper base and the lower base. And the limiting assembly is used for limiting the relative movement between the upper base and the lower base. The method has the effect of improving the safety performance.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic slip technology, and in particular to a pneumatic slip with a safety device. Background Technology

[0002] During maintenance of existing oil wells, it is common to pull out and lower the tubing piece by piece. Current equipment typically uses a combination of a hook on the derrick and tubing clamps. Manual assistance is used during lifting, but this is unstable, prone to swaying, and easily damages the tubing. The downhole portion of the tubing is usually secured with slips, but these slips are short and have a small force-applying area, easily damaging the tubing. Furthermore, during descent, relying on the tubing's own weight makes it difficult to control the speed and direction of descent, causing radial displacement and hindering proper tubing connection, resulting in low installation efficiency. Slips are specialized tools used to suspend drill strings at the wellhead, with many steel teeth on their inner walls.

[0003] Currently, the slips used to hold drill pipe in oil and gas drilling operations are mainly manual slips and pneumatic / hydraulic slips. Manual slips hold drill pipe and other tubing strings, but due to frequent operations, the labor intensity for workers is high. Currently, pneumatic / hydraulic slips on the market lack safety devices, and workers may be injured by accidental slip impacts during long-term operations. Safety performance needs to be improved. Utility Model Content

[0004] To improve safety performance, this application provides a pneumatic slip with a safety device.

[0005] The pneumatic slip with a safety device provided in this application adopts the following technical solution:

[0006] A pneumatic slip with a safety device includes a slip body, an upper base, and a lower base. The slip body is provided with a pin-driven rotary center, and the slip body is slidably connected to the pin-driven rotary center. The lower base is provided with a locking pin, which connects the lower base to the pin-driven rotary center. The upper base is rotatably provided with a connecting rod, which is rotatably connected to the slip body. The lower base is rotatably provided with a connecting cylinder, and the piston rod of the connecting cylinder is rotatably connected to the upper base. A limit component is provided between the upper base and the lower base to limit the relative movement between the upper base and the lower base.

[0007] By adopting the above technical solution, the connecting cylinder connects the upper base and the lower base. When in use, the connecting cylinder is activated to drive the upper base to move, thereby causing the slip body to rise or fall. At the same time, the movement range of the upper base is limited by the limiting component, thereby limiting the movement range of the slip body. This reduces the possibility of the slip body detaching from the pin-driven turntable and causing a safety accident due to worker carelessness, and improves safety performance.

[0008] Preferably, the limiting component includes a safety bolt and a safety pin, the safety bolt being rotatably mounted on the lower base, and the safety pin being mounted on the upper base and hooked by the safety bolt.

[0009] By adopting the above technical solution, the safety bolt limits the movement range of the safety pin, thereby limiting the movement range of the upper base, and further limiting the movement range of the slip body, thus achieving the limiting function and improving safety performance.

[0010] Preferably, the limiting component further includes a limiting pin, which is disposed on the upper base and the lower base is provided with a limiting groove. The limiting pin is inserted into the limiting groove and can slide in the limiting groove.

[0011] By adopting the above technical solution, when the upper base moves relative to the lower base, the limiting pin slides in the limiting groove, and the inner wall of the limiting groove abuts against the limiting pin to limit the upper base, thereby fixing the range that the slip body can move, realizing the limiting function, improving the stability of the limiting, and improving the safety performance.

[0012] Preferably, the lower base is provided with a protective cover that covers the limiting pin, and the lower base is provided with mounting bolts for mounting the protective cover onto the lower base.

[0013] By adopting the above technical solution, the protective cover is installed on the lower base with mounting bolts. The protective cover covers the limit pin, reducing the possibility of foreign objects in the environment colliding with the limit pin, causing the limit pin to be damaged or dislodged from the limit groove, thereby improving durability. At the same time, it reduces the possibility of safety accidents caused by the failure of the limit function due to the damage of the limit pin, thus improving safety performance. The protective cover can also reduce the possibility of workers being injured by colliding with the limit pin.

[0014] Preferably, the lower base is provided with a connecting pin, the upper base is provided with a connecting hole, the connecting pin passes through the connecting hole, and the connecting pin is disposed inside the protective cover.

[0015] By adopting the above technical solution, the connecting pin rotates to connect the lower base and the upper base, improving the stability of the connection between the upper base and the lower base. At the same time, the protective cover shields the connecting pin, reducing the possibility of the connecting pin being dislodged from the connecting hole by impact.

[0016] Preferably, the protective cover is provided with a mounting block, the lower base is provided with a mounting groove, the mounting block is inserted into the mounting groove, the protective cover is rotatably provided with a protective plate, and a locking component is provided between the protective plate and the protective cover, the locking component being used to lock the protective plate.

[0017] By adopting the above technical solution, the mounting block is inserted into the mounting slot to improve the stability of the assembly between the protective cover and the lower base. The protective plate is rotated and set on the protective cover so that the top of the protective cover can be opened to repair and replace the internal parts. At the same time, the protective plate is locked by the locking component to cover the top of the protective cover, thereby achieving the protective function.

[0018] Preferably, the locking assembly includes a first locking magnetic sheet and a second locking magnetic sheet. The first locking magnetic sheet is disposed on the protective plate, and the second locking magnetic sheet is disposed on the protective cover. The first locking magnetic sheet can be attached to the second locking magnetic sheet and magnetically attracted to the second locking magnetic sheet.

[0019] By adopting the above technical solution, rotating the protective plate causes it to press against the protective cover, and the first locking magnetic sheet adheres to and attracts the second locking magnetic sheet, thereby locking the protective plate and the protective cover to achieve protection. The operation is simple and convenient, and easy to use.

[0020] Preferably, a connecting spring is provided between the slip body and the upper base, and the connecting spring connects the slip body and the upper base.

[0021] By adopting the above technical solution, the connecting spring elastically connects the slip body and the upper base, thereby improving the stability of the connection between the slip body and the upper base.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up a slip body, a pin-driven turntable filler, an upper base, a lower base, a locking pin, a connecting rod, a connecting cylinder, and a limiting component, the upper base is connected to the slip body via the connecting rod, and the lower base is installed on the pin-driven turntable filler via the locking pin. The connecting cylinder connects the upper base and the lower base, and the limiting component limits the relative movement of the upper base and the lower base, thereby limiting the movement range of the slip body and the pin-driven turntable filler, thus reducing the possibility of the slip body detaching and causing an accident, and improving safety performance;

[0024] 2. By setting a safety bolt, safety pin, limit pin and limit groove, the safety bolt hooks the safety pin and abuts against the limit pin through the inner wall of the limit groove, thereby limiting the range of movement of the upper base relative to the lower base, thereby limiting the range of movement of the slip body, reducing the possibility of detachment, and improving safety performance.

[0025] 3. By setting up a protective cover and mounting bolts, the protective cover is installed on the lower base to cover the limit pin and other components, thereby reducing the possibility of foreign objects in the environment colliding with the limit pin, causing the limit pin to be damaged or dislodged from the limit groove, thus improving durability. At the same time, it reduces the possibility of safety accidents caused by the failure of the limit function due to the damage of the limit pin, thus improving safety performance. Attached Figure Description

[0026] Figure 1 This is an overall schematic diagram of a pneumatic chuck with a safety device provided in an embodiment of this application.

[0027] Figure 2 This is an overall top view of a pneumatic slip with a safety device provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Locking body; 2. Pin-driven turntable filler; 3. Lower base; 31. Locking pin; 32. Connecting hole; 33. Connecting cylinder; 34. Limiting groove; 36. Mounting groove; 4. Upper base; 41. Connecting rod; 42. Connecting pin; 5. Limiting assembly; 51. Safety bolt; 52. Safety pin; 53. Limiting pin; 6. Protective cover; 61. Mounting bolt; 62. Protective plate; 63. Mounting block; 7. Locking assembly; 71. First locking magnetic plate; 72. Second locking magnetic plate; 8. Connecting spring. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a pneumatic slip with a safety device. (Refer to...) Figures 1 to 2 The system includes a slip body 1, an upper base 4, and a lower base 3. The slip body 1 is fitted with a pin-driven rotary mandrel 2 and can slide within the mandrel 2. The lower base 3 is provided with a locking pin 31 for mounting on the pin-driven rotary mandrel 2. A curved connecting rod 41 is rotatably mounted at one end of the upper base 4, and the other end of the connecting rod 41 is rotatably mounted on the slip body 1. A connecting spring 8 is provided between the slip body 1 and the upper base 4 for elastic connection. A connecting hole 32 is provided at the other end of the upper base 4, and a connecting pin 42 adapted to pass through the connecting hole 32 is provided at the end of the lower base 3 away from the slip body 1. A connecting cylinder 33 is rotatably mounted on the lower base 3, and the piston rod of the connecting cylinder 33 is rotatably mounted on the upper base 4. A limit assembly 5 is provided between the upper base 4 and the lower base 3 to limit the relative movement between the upper base 4 and the lower base 3. By limiting the relative movement between the upper base 4 and the lower base 3 by the limit assembly 5, the possibility of the slip body 1 detaching and causing a safety accident is reduced, thereby improving safety performance.

[0031] To improve the stability of the limit switch, refer to Figures 1 to 2The limiting component 5 includes a limiting pin 53, a safety bolt 51, and a safety pin 52. The safety bolt 51 is rotatably mounted on the lower base 3, and the safety pin 52 is fixedly mounted on the upper base 4 and hooked by a hook in the middle of the safety bolt 51. The limiting pin 53 is fixedly mounted on the upper base 4, and an arc-shaped limiting groove 34 is provided through the side wall of the lower base 3. The limiting pin 53 fits through the limiting groove 34 and can slide within the limiting groove 34. The movement of the upper base 4 is limited by the limiting pin 53 and the safety pin 52, improving the stability of the limiting and thus enhancing safety performance.

[0032] To improve durability, refer to Figures 1 to 2 The lower base 3 is equipped with a protective cover 6 that shields the limiting pins 53 and connecting pins 42 from both sides. The lower base 3 is also equipped with mounting bolts 61 for mounting the protective cover 6. The protective cover 6 is integrally fixed with a mounting block 63. The side wall of the lower base 3 is provided with a mounting groove 36 that communicates with the bottom. The mounting block 63 is adapted to be inserted into the mounting groove 36. The protective cover 6 covers the side wall of the upper base 4 away from the slip body 1 and can abut against the side wall of the upper base 4 when it moves to its limit, so as to further limit the upper base 4. The top of the protective cover 6 is designed with an opening, and a protective plate 62 is rotatably provided on the protective cover 6 to close the openings on the top of the protective cover 6 on both sides of the lower base 3. A locking assembly 7 is provided between the protective plate 62 and the protective cover 6. The locking assembly 7 is used to lock the protective plate 62. The locking assembly 7 includes a first locking magnetic piece 71 and a second locking magnetic piece 72. The first locking magnetic piece 71 is fixedly mounted on the protective plate 62, and the second locking magnetic piece 72 is fixedly mounted on the protective cover 6. The first locking magnetic piece 71 can adhere to the second locking magnetic piece 72 and magnetically attract it. In another embodiment, bolts can be provided to improve the stability of the locking between the protective cover 6 and the protective plate 62. The protective cover 6 reduces the possibility of impact damage to parts such as the limit pin 53 and the connecting pin 42, thereby improving durability and simultaneously improving safety performance.

[0033] The implementation principle of a pneumatic slip with a safety device in this embodiment is as follows: A slip body 1 and a limiting component 5 are set up, and a safety bolt 51 is rotatably connected to the lower base 3. The safety bolt 51 supports or hooks onto the safety pin 52 on the upper base 4 through a swinging motion, making the entire structure reasonable, the clamping safe and reliable, and the operation and maintenance convenient. The limiting component 5, in conjunction with the side wall of the protective cover 6, limits the movement range of the slip body 1, thereby reducing the possibility of the slip body 1 detaching from the pin-driven turntable filler 2 during use and causing a safety accident, thus improving safety performance.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pneumatic chuck with a safety device, characterized in that: The device includes a slip body (1), an upper base (4), and a lower base (3). The slip body (1) is provided with a pin-driven turntable filler (2), and the slip body (1) is slidably connected to the pin-driven turntable filler (2). The lower base (3) is provided with a locking pin (31), which connects the lower base (3) to the pin-driven turntable filler (2). The upper base (4) is rotatably provided with a connecting rod (41), which is rotatably connected to the slip body (1). The lower base (3) is rotatably provided with a connecting cylinder (33), and the piston rod of the connecting cylinder (33) is rotatably connected to the upper base (4). A limit assembly (5) is provided between the upper base (4) and the lower base (3), which is used to limit the relative movement between the upper base (4) and the lower base (3).

2. A pneumatic slip with safety device according to claim 1, characterized in that: The limiting component (5) includes a safety bolt (51) and a safety pin (52). The safety bolt (51) is rotatably mounted on the lower base (3), and the safety pin (52) is mounted on the upper base (4) and hooked by the safety bolt (51).

3. A pneumatic slip with safety device according to claim 2, characterized in that: The limiting component (5) further includes a limiting pin (53), which is disposed on the upper base (4). The lower base (3) is provided with a limiting groove (34). The limiting pin (53) is inserted into the limiting groove (34) and can slide in the limiting groove (34).

4. A pneumatic slip with safety device according to claim 3, characterized in that: The lower base (3) is provided with a protective cover (6), which covers the limiting pin (53). The lower base (3) is provided with mounting bolts (61), which are used to install the protective cover (6) on the lower base (3).

5. A pneumatic slip with safety device according to claim 4, characterized in that: The lower base (3) is provided with a connecting pin (42), the upper base (4) is provided with a connecting hole (32), the connecting pin (42) passes through the connecting hole (32), and the connecting pin (42) is located inside the protective cover (6).

6. An air-activated slip with a safety device as defined in claim 4, wherein: The protective cover (6) is provided with a mounting block (63), the lower base (3) is provided with a mounting groove (36), the mounting block (63) is inserted into the mounting groove (36), the protective cover (6) is rotatably provided with a protective plate (62), and a locking component (7) is provided between the protective plate (62) and the protective cover (6), the locking component (7) is used to lock the protective plate (62).

7. A pneumatic slip with safety device according to claim 6, characterized in that: The locking assembly (7) includes a first locking magnetic sheet (71) and a second locking magnetic sheet (72). The first locking magnetic sheet (71) is disposed on the protective plate (62), and the second locking magnetic sheet (72) is disposed on the protective cover (6). The first locking magnetic sheet (71) can be attached to the second locking magnetic sheet (72) and magnetically attracted to the second locking magnetic sheet (72).

8. The pneumatic slip with safety device of claim 1, wherein: A connecting spring (8) is provided between the slip body (1) and the upper base (4), and the connecting spring (8) connects the slip body (1) and the upper base (4).

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