A connecting device for a multi-piece monolithic split traveling block and a top drive

Abstract

A connecting device for multiple single-piece split traveling blocks and top drives, belonging to the field of oil drilling mechanical equipment, overcomes the deficiencies of the prior art. Its structure includes an upper long shaft (1), a connecting device main body (2), a pin-type sensor (3), a lower connecting body (4), a lower pin (5), and a bushing (6). Two equal-length segments of the upper long shaft (1) are inserted into the circular holes of the upper main boards (7) distributed on both sides of the connecting device main body (2). The connecting device main body (2) is composed of an upper main board (7), an upper circular ring board (8), a lower main board (10), a lower circular ring board (11), a middle board (9), and a reinforcing rib plate (12). Among them, the upper main boards (7) are evenly distributed on both sides, and there are 4 lower main boards (10), which are distributed at both ends of the lower part of the upper main boards (7). The middle board (9) is welded to the upper main board (7) and the lower main board (10), and the reinforcing rib plates (12) are distributed below the middle board (9). There are 2 lower connecting bodies (4), which are a single and double ear plate combined structure and have a balance cylinder connecting ear (13). The present invention is applicable to the connection of multiple single-piece split traveling blocks with an even number and top drives.

Description

Technical Field

[0001] The present invention belongs to the field of oil drilling machinery and equipment, and particularly relates to a connecting device between a traveling block and a top drive. Background Art

[0002] In the hoisting system of an oil drilling rig, the traditional traveling block and top drive are connected by a hook. However, for a traveling system with a variable rope system composed of multiple single-piece split traveling blocks, the existing hook in the prior art cannot connect multiple single-piece split traveling blocks with the top drive. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a connecting device with a reasonable structure, which is applicable to the connection between multiple single-piece split traveling blocks and a top drive.

[0004] A connecting device between multiple single-piece split traveling blocks and a top drive, whose structure includes an upper long shaft 1, a connecting device main body 2, a pin-type sensor 3, a lower connecting body 4, a lower pin 5, and a bushing 6; the upper long shaft 1 has two equal-length sections, which are respectively inserted into the circular holes of the upper main boards 7 distributed on both sides of the connecting device main body 2; the connecting device main body 2 is composed of an upper main board 7, an upper circular ring board 8, a lower main board 10, a lower circular ring board 11, a middle board 9, and a reinforcing rib plate 12; among them, the upper main boards 7 are evenly distributed on both sides and are welded to the upper circular ring board 8 as a whole, and all the circular holes of the upper main boards 7 ensure coaxiality; there are 4 lower main boards 10 in total, which are distributed at both ends of the lower part of the upper main board 7 and are welded to the lower circular ring board 11 as a whole, and the upper main board 7 is perpendicular to the lower main board 10 and is welded into one body; the middle board 9 is connected to the upper main board 7 and the lower main board 10 by welding, and the reinforcing rib plates 12 are distributed below the middle board 9 to play a role in supporting and strengthening; there are 2 lower connecting bodies 4, which are a single-ear and double-ear plate combined structure, and its single ear plate is connected to the connecting device main body 2 through a pin-type sensor 3 and is distributed between the two lower main boards 10 at both ends; a balance cylinder connecting ear 13 is provided at the double ear plate.

[0005] According to the actual production needs, the present invention has various deformations, and the number of upper main boards 7 of the connecting device main body changes with the number of connected single-piece split traveling blocks; if the number of used single-piece split traveling blocks is an even number, i.e., 2N, then the number of upper main boards is 2N + 2.

[0006] During use, the long shaft 1 is connected to the single-piece split traveling block 14, and together with the crown block, it forms a variable rope system traveling system, and is connected to the connecting device main body 2 at the lower part; the balance cylinder connecting ear 13 of the lower connecting body 4 is connected to the top drive balance system cylinder 15, and the double ear plate of the lower connecting body 4 is connected to the lifting ring of the top drive 16 through the lower pin 5 and the bushing 6.

[0007] The beneficial effects of the present invention are:

[0008] 1. The present invention enables multiple single-piece split traveling blocks to be connected to the top drive through the traveling block hook, which is convenient and fast, and completes the automated operation of variable rope systems through the cooperation of the variable rope system hydraulic cylinder;

[0009] 2. The structure of the present invention is reasonably designed, facilitating installation, disassembly, and transportation;

[0010] 3. The structure of the present invention is simple, reducing the manufacturing cost.

[0011] 4. The pin-type sensor of the present invention can measure the hook load with high accuracy and a direct measurement method. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present invention;

[0013] Figure 2 is the front view of the structure of the present invention;

[0014] Figure 3 is the left view of the structure of the present invention;

[0015] Figure 4 Schematic structural diagram of the connection device main body 2 viewed from the lower side;

[0016] Figure 5 Schematic structural diagram of the connection device main body 2 viewed from the upper side;

[0017] Figure 6 Schematic structural diagram of the lower connection body 4;

[0018] Figure 7 is the connection schematic diagram of the present invention with the single-piece split traveling block and the top drive;

[0019] In the figure: 1 upper long shaft, 2 connection device main body, 3 pin-type sensor, 4 lower connection body, 5 lower pin, 6 bushing, 7 upper main board, 8 upper circular ring board, 9 middle board, 10 lower main board, 11 lower circular ring board, 12 reinforcing rib plate, 13 balance hydraulic cylinder connection ear, 14 single-piece split traveling block, 15 top drive balance system hydraulic cylinder, 16 top drive. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] As Figure 1 、 Figure 2 、 Figure 3 shown, a connection device for multiple single-piece split traveling blocks and a top drive has a structure including an upper long shaft 1, a connection device main body 2, a pin-type sensor 3, a lower connection body 4, a lower pin 5, and a bushing 6; the upper long shaft 1 has two equal-length segments, which are inserted into the circular holes of the upper main boards 7 distributed on both sides of the connection device main body 2 and are connected to the connection device main body 2; AsFigure 4 , Figure 5 As shown in Figure 5 , the main body 2 of the connecting device is composed of an upper main board 7, an upper circular ring board 8, a lower main board 10, a lower circular ring board 11, a middle board 9, and a reinforcing rib board 12. In this embodiment, there are 8 single-piece split traveling blocks 14. There are 10 upper main boards 7 in total, which are welded to the upper circular ring board 8 as a whole, and the coaxiality of the 5 round holes on each side of the upper main board 7 is ensured. There are 4 lower main boards 10 in total, which are distributed at both ends of the lower part of the upper main board 7 and are welded to the lower circular ring board 11 as a whole. The upper main board 7 and the lower main board 10 form a 90° angle and are welded together. The middle board 9 is connected to the upper main board 7 and the lower main board 10 by welding. The reinforcing rib boards 12 are distributed below the middle board 9 to play a role in supporting and strengthening. As Figure 6 As shown in Figure 6 , the lower connecting body 4 is a combined structure of a single ear plate and a double ear plate. Its single ear plate is connected to the main body 2 of the connecting device through a pin-type sensor 3. The function of the bushing 6 is to make the connection between the lifting ring of the top drive 16 and the lower connecting body 4 meet the relevant requirements of API 8C, that is, the drilling and oil production lifting equipment specification. A balance cylinder connecting ear 13 is also provided at the double ear plate. The function of the lower connecting body 4 is to prevent the top drive balance cylinder 15 from driving the top drive 16 to bounce upward during drilling out, which may cause impact on the pin-type sensor 3 and improve the service life of the pin-type sensor 3.

[0022] According to the actual production needs, the present invention has various deformations. The number of upper main boards of the main body of the connecting device changes with the number of single-piece split traveling blocks connected. In practice, the commonly used single-piece split traveling blocks are 4, 6, 8 or 10, and the corresponding numbers of upper main boards are 6, 8, 10 or 12 respectively. If the number of single-piece split traveling blocks used is an even number, that is, 2N, then the number of upper main boards is 2N + 2.

[0023] When in use, as Figure 7 shown, the single-piece split traveling block 14 is connected to the long shaft 1, forming a variable rope system traveling system with the crown block, and is connected to the main body 2 of the connecting device below. The balance cylinder connecting ear 13 of the lower connecting body 4 is connected to the top drive balance system cylinder 15. The double ear plate of the lower connecting body 4 is connected to the lifting ring of the top drive 16 through the lower pin 5 and the bushing 6.

[0024] The present invention is applicable to the connection of an even number of single-piece split traveling blocks and the top drive.

Claims

1. A method of using a connecting device for a multi-piece monolithic split traveling block and a top drive, Characterized in that: The device structure includes an upper long shaft (1), a connecting device main body (2), a pin-type sensor (3), a lower connecting body (4), a lower pin (5), and a bushing (6); the upper long shaft (1) has two equal-length sections, which are respectively inserted into the round holes of the upper main boards (7) distributed on both sides of the connecting device main body (2); the connecting device main body (2) is composed of an upper main board (7), an upper circular board (8), a lower main board (10), a lower circular board (11), a middle board (9), and a reinforcing rib board (12); among them, the upper main boards (7) are evenly distributed on both sides and are welded to the upper circular board (8) as a whole, and all the round holes of the upper main boards (7) ensure coaxiality; there are 4 lower main boards (10) in total, which are distributed at both ends of the lower part of the upper main board (7) and are welded to the lower circular board (11) as a whole. The upper main board (7) is perpendicular to the lower main board (10) and is welded into one body; the middle board (9) is connected to the upper main board (7) and the lower main board (10) by welding, and the reinforcing rib board (12) is distributed below the middle board (9) to play a role in support and reinforcement; there are 2 lower connecting bodies (4), which are a single and double ear plate combined structure. The single ear plate is connected to the connecting device main body (2) through the pin-type sensor (3) and is distributed between the two lower main boards (10) at both ends; a balance cylinder connecting ear (13) is provided at the double ear plate. There are various deformations according to the actual production needs. The number of upper main boards (7) of the connecting device main body changes with the number of monolithic split traveling blocks connected; if the number of monolithic split traveling blocks used is an even number, i.e., 2N, then the number of upper main boards is 2N + 2. The usage method is as follows: The long shaft (1) is connected to the monolithic split traveling block (14) to form a variable rope system traveling system with the overhead crane, and is connected to the connecting device main body (2) below; the balance cylinder connecting ear (13) of the lower connecting body (4) is connected to the balance system cylinder (15) of the top drive, and the double ear plate of the lower connecting body (4) is connected to the lifting ring of the top drive (16) through the lower pin (5) and the bushing (6).

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