Single track double self-locking sleeve table

Abstract

The application discloses a single-rail double-self-locking casing platform, which comprises a guide rail, the guide rail is of a double-web structure, uniformly distributed clamping grooves are formed on the guide rail, a buffer device is fixedly connected to the bottom of the guide rail, a lifting platform assembly is connected to the position close to the bottom of the guide rail, an ear plate is arranged at the top of the guide rail, a pneumatic endless chain hoist is arranged at the bottom of the ear plate, the ear plate and the pneumatic endless chain hoist are connected through a pin shaft A and a safety pin, and the pneumatic endless chain hoist is connected with the lifting platform assembly through an endless chain. The single-rail double-self-locking casing platform adopts the single-rail double-web structure form, which can guarantee the strength of the rail, meet the demand of small drilling machines, especially the casing platform installation of workover rigs, realize the triple anti-falling requirement of the casing platform matched with the lifting operation platform through the double-self-locking structure and the brake function of the pneumatic hoist, and effectively improve the operation safety. The whole structure is simple, convenient to operate, economical and practical, and stable and reliable in work.

Description

Technical Field

[0001] This invention belongs to the field of petroleum machinery and equipment technology, specifically relating to a single-track double self-locking casing platform. Background Technology

[0002] In oil drilling casing runs, the casing platform is an essential piece of equipment, providing a platform for personnel to run the casing and allowing for vertical adjustment based on the working height. Currently, dual-track casing platforms are large and heavy, unsuitable for small drilling rigs, especially workover rigs. Single-track casing platforms, limited by their structure, are mostly single self-locking structures, failing to meet modern drilling HSE requirements. Therefore, this paper proposes a single-track, double self-locking casing platform to meet the casing run requirements of small drilling rigs, particularly workover rigs. Summary of the Invention

[0003] The purpose of this invention is to provide a single-track double self-locking bushing platform, which solves the problem that most single-track bushing platforms are single self-locking structures due to structural reasons.

[0004] The technical solution adopted in this invention is a single-track double self-locking sleeve platform, including a guide rail with a double web structure. The guide rail surface has evenly distributed slots. A limit block is fixedly connected to the upper section of the guide rail. A buffer device is fixedly connected to the bottom of the guide rail. A lifting platform assembly is connected near the bottom of the guide rail. An ear plate is provided at the top of the guide rail. A pneumatic chain hoist is provided at the bottom of the ear plate. The ear plate and the pneumatic chain hoist are connected by a pin A and a safety pin. The pneumatic chain hoist and the lifting platform assembly are connected by a chain.

[0005] The invention is further characterized in that,

[0006] The lifting platform assembly includes a pair of lifting frames. Crossbeams are located at the top and bottom of the lifting frames, with U-shaped rings fixed to the crossbeams. Side plates are located on the side of each lifting frame near the guide rail. Guide wheels A and guide wheel seats are located on the side plates. Guide wheel A is pin-connected to the side plate, and its outer circumference abuts against the guide rail. The guide wheel seat is threaded to the side plate. Guide wheel B is fixed to the guide wheel seat, and its outer circumference abuts against the guide rail. Adjusting shims are provided between the guide wheel seat and the lifting frame. Ear seats are fixed to the bottom of the lifting frame on the side away from the guide rail. An operating platform is also connected to the bottom of the lifting frame on the side away from and perpendicular to the guide rail. Connecting ear plates are fixed to the upper surface of the operating platform. The operating platform is connected to the buffer device via a safety chain. The ear seats and connecting ear plates cooperate with each other. The lifting frame and the operating platform are connected via pin C and a safety pin. A suspension plate is fixed to the top of the lifting frame, and a foot plate assembly is fixed to the bottom of the lifting frame.

[0007] The suspension plate assembly includes a pair of plate ear plates, which are fixedly connected to the upper end of the lifting frame. A pair of plates are provided between the plate ear plates, and a rotating shaft is fixedly connected between the plate ear plates. The rotating shaft passes through the plates, and a force transmission shaft is also hinged between the plates. A lifting lug is fixedly connected to the surface of the force transmission shaft. The rotating shaft and the force transmission shaft are parallel to each other, and a U-shaped ring is fixedly connected to the inner sidewall of the plate.

[0008] The pedal plate assembly includes a pair of plate ear plates, which are fixedly connected to the upper end of the lifting frame. A pair of plates are provided between the plate ear plates, and a rotating shaft is fixedly connected between the plate ear plates. The rotating shaft passes through the plates. A force transmission shaft is also fixedly connected between the plates. A lifting lug is fixedly connected to the surface of the force transmission shaft. The rotating shaft and the force transmission shaft are parallel to each other. A U-shaped ring is fixedly connected to the inner side wall of the plate. A rotating plate is sleeved in the middle section of the force transmission shaft. A pedal is threadedly connected to the rotating plate. A support seat is connected to the middle section of the pedal by bolts and nuts. The support seat is also fixedly connected to the lifting frame.

[0009] The U-shaped ring fixed on the lifting frame beam is connected to the U-shaped ring fixed on the inner wall of the card plate by a tension spring.

[0010] The beneficial effects of this invention are:

[0011] This invention adopts a single-track double self-locking structure. The single-track double web structure ensures track strength while meeting the needs of small drilling rigs, especially workover rigs, for installing casing platforms. The double self-locking structure, combined with the pneumatic hoist's air cut-off brake function, achieves triple anti-fall requirements for the casing platform's lifting operating platform, effectively improving operational safety. The overall structure is simple, easy to operate, economical, practical, and stable and reliable in operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the single-track double self-locking sleeve platform of the present invention;

[0013] Figure 2 This is a right view of the single-track double self-locking sleeve platform lifting platform assembly structure of the present invention;

[0014] Figure 3 This is a front view of the single-track double self-locking sleeve platform lifting platform assembly structure of the present invention;

[0015] Figure 4 This is a top view of the single-track double self-locking sleeve platform lifting platform assembly structure of the present invention;

[0016] Figure 5 This is a right view of the single-track double self-locking sleeve platform foot pedal assembly structure of the present invention;

[0017] Figure 6 This is a front view of the single-track double self-locking sleeve platform foot pedal assembly structure of the present invention;

[0018] Figure 7This is a top view of the single-track double self-locking sleeve platform foot pedal assembly structure of the present invention;

[0019] Figure 8 This is a front view of the single-track double self-locking sleeve platform suspension plate assembly structure of the present invention;

[0020] Figure 9 This is a left view of the single-track double self-locking sleeve platform suspension plate assembly structure of the present invention;

[0021] Figure 10 This is a top view of the single-track double self-locking sleeve platform suspension plate assembly structure of the present invention.

[0022] In the diagram, 1. Derrick, 2. Guide rail, 3. Lifting platform assembly, 4. Operating panel, 5. Safety chain, 6. Buffer device, 7. Limit block, 8. Pin A, 9. Pin B, 10. Pin C, 11. Pin, 12. Pneumatic chain hoist, 13. Guide wheel seat, 14. Guide wheel A, 15. Lifting frame, 16. Guide wheel B, 17. Adjusting shim, 18. Suspension plate assembly, 19. Step plate assembly, 20. Pedal, 21. Bolt, 22. Nut, 23. Tension spring, 24. Lifting lug, 25. Plate ear plate, 26. Plate, 27. U-ring, 28. Rotating plate, 29. Force transmission shaft, 30. Rotating shaft, 31. Support seat, 32. Ear seat, 33. Connecting ear plate. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figure 1 As shown, the single-track double self-locking sleeve platform of the present invention includes a guide rail 2. The top end of the guide rail 2 is connected to the derrick 1 via a pin B9 and a pin 11. The pin 11 fixes the pin B9 to prevent it from falling off. The middle section of the guide rail 2 is connected to the derrick 1 via a pin C10 and a pin 11. The pin 11 fixes the pin C10 to prevent it from falling off. The middle section of the guide rail 2 has a double web structure, and evenly distributed slots are opened on both sides of the flange end face. A limit block 7 is fixedly connected to the upper section of the guide rail 2 to prevent the lifting platform assembly 3 from rising too high. A buffer device 6 is fixedly connected to the bottom of the guide rail 2 to prevent the lifting platform assembly 3 from detaching from the guide rail 2. The lifting platform assembly 3 is connected near the bottom of the guide rail 2 and can move relative to the guide rail 2. The top side wall of the guide rail 2 is provided with an ear plate, and the bottom of the ear plate is provided with a pneumatic chain hoist 12. The ear plate and the pneumatic chain hoist 12 are connected by a pin A8 and a pin 11. The pin 11 fixes the pin A8 to prevent the pin A8 from falling off. The chain on the pneumatic chain hoist 12 is connected to the lifting platform assembly 3 by a shackle.

[0025] like Figure 2 , Figure 3 and Figure 4As shown, the lifting platform assembly 3 of this invention includes a pair of lifting frames 15. The top and bottom ends of each lifting frame 15 are provided with crossbeams, and U-shaped rings 27 are fixedly connected to the crossbeams. A side plate is provided on the side of the lifting frame 15 near the guide rail 2. A guide wheel A14 and a guide wheel seat 13 are provided on the side plate. The guide wheel A14 is pin-connected to the side plate and fixed to the lifting frame 15. The circumferential surface of the guide wheel A14 abuts against the guide rail 2 and can roll along the inner sides of the upper and lower flanges of the guide rail 2. The guide wheel seat 13 is threadedly connected to the side plate, and a guide wheel B16 is fixedly connected to the guide wheel seat 13. The guide wheel B16 can roll along the web of the guide rail 2 and abuts against the guide rail 2. An adjusting pad is provided between the guide wheel seat 13 and the lifting frame 15. The distance between the guide wheel B16 and the web of the guide rail 2 can be adjusted by adjusting the shim 17. The bottom of the lifting frame 15 is fixedly connected to the side away from the guide rail 2 with an ear seat 32. The bottom of the lifting frame 15 is also connected to the side away from and perpendicular to the guide rail 2 with an operating platform 4. The upper surface of the operating platform 4 is welded with a connecting ear plate 33. The ear seat 32 and the connecting ear plate 33 cooperate with each other. The lifting frame 15 and the operating platform 4 are connected by a pin C10 and a pin 11. The top of the lifting frame 15 is fixedly connected to a suspension plate assembly 18. The bottom of the lifting frame 15 is fixedly connected to a step plate assembly 19. The bottom surface of the operating platform 4 is connected to the buffer device 6 by a safety chain 5 to further protect the operating platform 4 and prevent the operating platform from falling and causing danger.

[0026] like Figure 5 , Figure 6 and Figure 7 As shown, the pedal plate assembly 19 includes a pair of plate ear plates 25, which are fixedly connected to the upper end of the lifting frame 15. A pair of plates 26 are provided between the plate ear plates 25, and a rotating shaft 30 is fixedly connected between the plate ear plates 25. The rotating shaft 30 passes through the plates 26, and the plates 26 can rotate around the rotating shaft 30. A force transmission shaft 29 is also fixedly connected between the plates 26. A lifting lug 24 is fixedly connected to the surface of the force transmission shaft 29. The rotating shaft 30 and the force transmission shaft 29 are parallel to each other. A U-shaped ring 27 is fixedly connected to the inner side wall of the plates 26 for connecting a tension spring 23. A rotating plate 28 is sleeved in the middle section of the force transmission shaft 29. The rotating plate 28 can rotate around the force transmission shaft 29. A pedal 20 is threadedly connected to the rotating plate 28. A support seat 31 is connected to the middle section of the pedal 20 by bolts 21 and nuts 22. The support seat is fixedly connected to the lifting frame 15.

[0027] like Figure 8 , Figure 9 and Figure 10 As shown, the suspension plate assembly 18 includes a pair of plate ear plates 25, which are fixedly connected to the upper end of the lifting frame 15. A pair of plates 26 are provided between the plate ear plates 25, and a rotating shaft 30 is fixedly connected between the plate ear plates 25. The rotating shaft 30 passes through the plates 26. A force transmission shaft 29 is also hinged between the plates 26. A lifting lug 24 is fixedly connected to the surface of the force transmission shaft 29. The rotating shaft 30 and the force transmission shaft 29 are parallel to each other. A U-shaped ring 27 is fixedly connected to the inner sidewall of the plates 26 for connecting the tension spring 23.

[0028] The working principle of the single-track double self-locking sleeve platform of the present invention is as follows: the lifting platform assembly 3 is locked between the flanges of the guide rail 2 via guide wheels A14 and B16, and the chain of the pneumatic chain hoist 12 is connected to the lifting lug 24 in the lifting platform assembly 3. By stretching the chain on the pneumatic chain hoist 12, the lifting platform assembly 3 is driven to move upward or downward along the guide rail 2; the pneumatic chain hoist 12 has a braking function, and when its air supply is cut off, the lifting platform assembly 3 stops at its current position. The limit block 7 prevents the lifting platform assembly 3 from overshooting; the buffer device 6 prevents the lifting platform assembly 3 from detaching from the guide rail 2; the distance between the guide wheel B16 and the web of the guide rail 2 can be adjusted by adjusting the shim 17 to prevent the operating platform 4 from being unbalanced.

[0029] The double self-locking working principle of the lifting platform assembly 3 is as follows: At the upper end of the lifting platform assembly 3 is a suspension plate assembly 18. When the chain of the pneumatic chain hoist 12 breaks accidentally, causing the lifting platform assembly 3 to fall, the plate 26 is reset under the action of the tension spring 23, locking into the groove on the flange end face of the guide rail 2, preventing the lifting platform assembly 3 from falling further. At the lower end of the lifting platform assembly 3 is a step plate assembly 19. When the lifting platform assembly 3 moves downwards, the chain on the pneumatic chain hoist 12 is slightly stretched, causing the lifting platform assembly 3 to rise slightly. The pedal 20 is then pressed down and held stationary. The pedal 20 is connected to the rotating shaft 30 and the force transmission shaft 29. The clamping plate 26 is rotated, causing it to disengage from the groove on the flange end face of the guide rail 2. When the lifting platform assembly 3 is lowered to the low working position, the pedal 20 is released, and the clamping plate 26 on the clamping plate assembly 19 is automatically engaged in the groove on the flange end face of the guide rail 2 under the action of the tension spring 23, thus completing the position locking. When there is no operator on the operating platform 4 or the operator accidentally releases the pedal 20 during the up and down movement of the lifting platform assembly 3, the clamping plate 26 on the clamping plate assembly 19 is automatically engaged in the groove on the flange end face of the guide rail 2 under the action of the tension spring 23, thus completing the position locking and preventing the lifting platform assembly 3 from falling further.

[0030] This invention relates to a single-track double self-locking casing platform for casing installation on small drilling rigs and workover rigs. It utilizes a pneumatic chain hoist for power, enabling the platform to rise and fall. The double self-locking structure provides dual fall protection for the casing platform's lifting control platform, effectively improving operational safety. The single-track double-web structure ensures track strength while meeting the requirements of small drilling rigs, especially workover rigs, for casing platform installation. The double self-locking structure, combined with the pneumatic hoist's air-cut brake function, achieves triple fall protection for the casing platform's lifting control platform, further enhancing operational safety. The overall structure is simple, easy to operate, economical, practical, and provides stable and reliable operation.

Claims

1. A single-track double self-locking sleeve platform, characterized in that, Includes a guide rail (2), which has a double web structure. The guide rail (2) has evenly distributed slots on its surface. A limit block (7) is fixedly connected to the upper section of the guide rail (2). A buffer device (6) is fixedly connected to the bottom of the guide rail (2). A lifting platform assembly (3) is connected near the bottom of the guide rail (2). The top of the guide rail (2) is provided with an ear plate. A pneumatic chain hoist (12) is provided at the bottom of the ear plate. The ear plate and the pneumatic chain hoist (12) are connected by a pin A (8) and a pin (11). The pneumatic chain hoist (12) and the lifting platform assembly (3) are connected by a chain. The lifting platform assembly (3) includes a pair of lifting frames (15). The top and bottom ends of the lifting frames (15) are provided with crossbeams, and U-shaped rings (27) are fixedly connected to the crossbeams. Side plates are provided on both ends of the lifting frames (15) near the guide rail (2). Guide wheels A (14) and guide wheel seats (13) are provided on the side plates. The guide wheels A (14) are pin-connected to the side plates. The outer circumferential surface of the guide wheels A (14) abuts against the guide rail (2). The guide wheel seats (13) are threadedly connected to the side plates. Guide wheels B (16) are fixedly connected to the guide wheel seats (13). The outer circumferential surface of the guide wheels B (16) abuts against the guide rail (2). Between the guide wheel seats (13) and the lifting frames (15) An adjusting shim (17) is provided. An ear seat (32) is fixedly connected to the bottom of the lifting frame (15) away from the guide rail (2). An operating table (4) is also connected to the bottom of the lifting frame (15) away from and perpendicular to the guide rail (2). A connecting ear plate (33) is fixedly connected to the upper surface of the operating table (4). The operating table (4) is connected to the buffer device (6) by a safety chain (5). The ear seat (32) and the connecting ear plate (33) cooperate with each other. The lifting frame (15) and the operating table (4) are connected by a pin C (10) and a pin (11). A suspension plate (18) is fixedly connected to the top of the lifting frame (15). A foot plate assembly (19) is fixedly connected to the bottom of the lifting frame (15).

2. The single-track double self-locking sleeve platform according to claim 1, characterized in that, The suspension plate assembly (18) includes a pair of plate ear plates (25), the plate ear plates (25) are fixedly connected to the upper end of the lifting frame (15), a pair of plates (26) are provided between the plate ear plates (25), a rotating shaft (30) is fixedly connected between the plate ear plates (25), the rotating shaft (30) passes through the plates (26), a force transmission shaft (29) is also hinged between the plates (26), a lifting lug (24) is fixedly connected to the surface of the force transmission shaft (29), the rotating shaft (30) and the force transmission shaft (29) are parallel to each other, and a U-shaped ring (27) is fixedly connected to the inner wall of the plates (26).

3. The single-track double self-locking sleeve platform according to claim 1, characterized in that, The pedal plate assembly (19) includes a pair of plate ear plates (25), which are fixedly connected to the upper end of the lifting frame (15). A pair of plates (26) are provided between the plate ear plates (25), and a rotating shaft (30) is fixedly connected between the plate ear plates (25). The rotating shaft (30) passes through the plates (26). A force transmission shaft (29) is also fixedly connected between the plates (26), and a hanging device is fixedly connected to the surface of the force transmission shaft (29). Ear (24), the rotating shaft (30) is parallel to the force transmission shaft (29), a U-shaped ring (27) is fixed on the inner wall of the clamping plate (26), a rotating plate (28) is sleeved in the middle section of the force transmission shaft (29), a pedal (20) is threaded on the rotating plate (28), a support seat (31) is connected in the middle section of the pedal (20) by bolts (21) and nuts (22), and the support seat (31) is also fixed to the lifting frame (15).

4. The single-track double self-locking sleeve platform according to claim 2 or 3, characterized in that, The U-shaped ring (27) fixed on the crossbeam of the lifting frame (15) and the U-shaped ring (27) fixed on the inner sidewall of the card plate (26) are connected by a tension spring (23).

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