Double-pipe oil well hydraulic power tongs

Abstract

The utility model relates to the technical field of hydraulic power tongs, in particular to a double-pipe oil well hydraulic power tong which comprises a movable cart, the top of the movable cart is fixedly connected with a height adjusting mechanism, and the top of the height adjusting mechanism is fixedly connected with a hydraulic tong. The device has the beneficial effects that a movable cart is matched with a height adjusting mechanism and a hydraulic clamp, a push rod is pushed, the movable cart moves the hydraulic clamp to a position needing to be used, a motor is started to drive a threaded rod to rotate, a first lifting part and a second lifting part are driven to rotate through threaded movement of a movable block and the threaded rod, and a top fixing block is lifted upwards; the height of the hydraulic clamp is stably adjusted until the gap between the lower clamp body and the upper clamp body reaches the height of the joint where the oil pipe needs to be detached or installed, and the flexibility and safety of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic power tongs technology, specifically a dual-tube oil well hydraulic power tong. Background Technology

[0002] A hydraulic power tong is a tool specifically designed for oil well operations. Powered by a hydraulic system, it efficiently and safely loosens threads on oil tubing and drill strings. This hydraulic power tong plays a crucial role in oil extraction and well workover processes.

[0003] Currently, hydraulic tongs used in well workover operations in major oilfields in my country are still manually pushed and pulled. The manual directional valve is used to add or remove tubing. When in use, the hydraulic tongs are suspended on the derrick to ensure that the height and horizontal position are appropriate. The tail rope is fixed to the derrick to maintain an appropriate height and tension with the tongs. The movement of the main tongs and the back tongs is controlled by the manual directional valve to achieve the addition or removal of the tongs.

[0004] In existing technologies, worm gear mechanisms and wire rope combinations are commonly used to lift hydraulic clamps and adjust their height. However, existing height adjustment technologies have shortcomings in terms of reliability and stability. For example, when workers operate the hydraulic clamps from below the lifting equipment, the self-locking device of the hydraulic rod may loosen after high pressure or prolonged use, affecting operational safety. Furthermore, hydraulic clamps are heavy and difficult to move, relying heavily on lifting equipment, resulting in high labor intensity and a cumbersome operation process. Utility Model Content

[0005] The purpose of this invention is to provide a dual-tube oil well hydraulic power tong to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-tube oil well hydraulic power tong, comprising a mobile trolley, wherein a height adjustment mechanism is fixedly connected to the top of the mobile trolley, and a hydraulic tong is fixedly connected to the top of the height adjustment mechanism;

[0007] The height adjustment mechanism includes two fixed seats. The bottom of the two fixed seats is fixedly connected to the mobile trolley, and the top of each of the two fixed seats is fixedly connected to a mounting block. Two lifting components are rotatably connected to the mounting blocks.

[0008] Preferably, each of the two lifting members has a movable block fixedly connected to one end away from the mounting block, and a mounting box is fixedly connected to one side of one of the movable blocks, with two threaded rods rotatably connected to the mounting box.

[0009] Preferably, the outer walls of the two threaded rods are threadedly connected to the movable block away from the mounting box, one end of one of the threaded rods is fixedly connected to the output end of the motor, and the outer walls of the two threaded rods inside the mounting box are fixedly connected to bevel gears, with gear transmission rods meshing on opposite sides of the two bevel gears.

[0010] Preferably, the top of each of the four movable blocks is rotatably connected to a lifting member 2. The four lifting members 2 are divided into two groups. The end of each lifting member 2 away from the movable block is rotatably connected to a top fixing block. The top of the top fixing block is fixedly connected to a mounting plate. The top of the mounting plate is fixedly connected to a hydraulic clamp.

[0011] Preferably, the mobile cart includes a mobile carriage, a fixed base plate is fixedly connected to the middle of the mobile carriage, the top of the fixed base plate is fixedly connected to a fixed seat, a slot is provided on the front side of the fixed base plate, and push rods are rotatably connected to both sides of the mobile carriage.

[0012] Preferably, the hydraulic clamp includes a disc body, the bottom of which is fixedly connected to a top fixing block by bolts, a hydraulic cylinder is provided on the top of the disc body, a lower clamp body and an upper clamp body are fixedly connected to one end of the disc body, the lower clamp body and the upper clamp body are arranged vertically, and clamp heads are provided inside the lower clamp body and the upper clamp body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model proposes a dual-tube oil well hydraulic power tong. The tong, in conjunction with a movable trolley and a height adjustment mechanism, moves a push rod to the desired position. A motor then rotates a threaded rod, causing a movable block to move along the threaded rod, which in turn rotates two lifting components, raising the top fixing block until the gap between the lower and upper tongs reaches the height required for disassembling or installing the oil pipe connection. This allows for stable height adjustment of the hydraulic tong, improving the flexibility and safety of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this practical mobile cart;

[0017] Figure 3 This is a schematic diagram of the back structure of the height adjustment mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the hydraulic clamp structure of this utility model.

[0019] In the diagram: 1. Mobile trolley; 2. Height adjustment mechanism; 3. Hydraulic clamp; 11. Mobile cart; 12. Push rod; 13. Slot; 14. Fixed base plate; 21. Fixed seat; 22. Mounting block; 23. Lifting component one; 24. Movable block; 25. Mounting box; 26. Threaded rod; 27. Bevel gear; 28. Gear transmission rod; 29. ​​Lifting component two; 210. Top fixing block; 211. Mounting plate; 31. Disc body; 32. Hydraulic cylinder; 33. Lower clamp body; 34. Upper clamp body; 35. Clamp head. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see the appendix Figure 1-4 This application provides the following technical solutions.

[0022] A dual-tube oil well hydraulic power tong includes a mobile trolley 1. A height adjustment mechanism 2 is fixedly connected to the top of the mobile trolley 1, and a hydraulic tong 3 is fixedly connected to the top of the height adjustment mechanism 2. The height adjustment mechanism 2 includes two fixed seats 21, the bottoms of which are fixedly connected to the mobile trolley 1. A mounting block 22 is fixedly connected to the top of each of the two fixed seats 21. Two lifting components 23 are rotatably connected to the mounting blocks 22. A movable block 24 is fixedly connected to the end of each lifting component 23 away from the mounting block 22. A mounting box 25 is fixedly connected to one side of one of the movable blocks 24. Two threaded rods 26 are rotatably connected to the mounting box 25. The outer wall of each threaded rod 26 is threadedly connected to the movable block 24 away from the mounting box 25. One end of one threaded rod 26 is fixedly connected to the output end of the motor. The outer walls of the two threaded rods 26 inside the mounting box 25 are fixedly connected to bevel gears 27. The opposite sides of the two bevel gears 27 are meshed with gear transmission rods 28. The tops of the four movable blocks 24 are rotatably connected to lifting components 29. The four lifting components 29 are divided into two groups. The end of each lifting component 29 away from the movable block 24 is rotatably connected to a top fixing block 210. The top of the top fixing block 210 is fixedly connected to a mounting plate 211. The top of the mounting plate 211 is fixedly connected to the hydraulic clamp 3.

[0023] It should be noted that when the operator starts the motor, the threaded rod 26 rotates, which in turn drives the bevel gear 27 to rotate. The bevel gear 27 then drives the gear transmission rod 28 to rotate inside the mounting box 25. The gear transmission rod 28 then drives another threaded rod 26 to rotate. The rotation of the two threaded rods 26 causes the two movable blocks 24, which are away from the mounting box 25, to move in a threaded motion with the threaded rods 26. The movable blocks 24, which are away from the mounting box 25, gradually move closer to the mounting box 25, causing the lifting component 1 23 to rotate between the movable block 24 and the mounting block 22, pushing the movable block 24 upward. At the same time, it drives the lifting component 29 to rotate between the movable block 24 and the top fixed block 210, pushing the mounting plate 211 upward. The mounting plate 211 then drives the hydraulic clamp 3, which is fixed to the top by bolts, to move upward until the gap between the lower clamp body 33 and the upper clamp body 34 reaches the height required for disassembling or installing the oil pipe connection.

[0024] The mobile cart 1 includes a mobile cart 11, a fixed base plate 14 is fixedly connected to the middle of the mobile cart 11, the top of the fixed base plate 14 is fixedly connected to the fixed seat 21, a slot 13 is opened on the front side of the fixed base plate 14, and push rods 12 are rotatably connected to both sides of the mobile cart 11.

[0025] It should be noted that when using the device, the operator should first check the safety of each component inside the device, and then pull the push rod 12 to move the device to the place of use. During the actual movement, the position of the hydraulic clamp 3 can be moved by the universal wheels set on the moving vehicle 11, so that the pipe can reach the clamp head 35 precisely from the notch between the slot 13 and the lower clamp body 33 and the upper clamp body 34.

[0026] The hydraulic clamp 3 includes a disc body 31. The bottom of the disc body 31 is fixedly connected to the top fixing block 210 by bolts. A hydraulic cylinder 32 is provided on the top of the disc body 31. A lower clamp body 33 and an upper clamp body 34 are fixedly connected to one end of the disc body 31. The lower clamp body 33 and the upper clamp body 34 are arranged vertically. The clamp heads 35 are provided inside the lower clamp body 33 and the upper clamp body 34.

[0027] It should be noted that when the gap between the current clamp body 33 and the upper clamp body 34 reaches the height at the point where the oil pipe connection needs to be disassembled or installed, the operator can start the hydraulic cylinder 32 to move the clamp head 35 to the center through the disc body 31 until the four clamp heads 35 are in contact with the pipe, and the two pipes can be separated or closed by rotation.

[0028] During use, the operator first checks the safety of each component inside the device, then pulls the push rod 12 to move the device to the location of use. During the actual movement, the hydraulic clamp 3 can be moved using the casters on the moving cart 11, allowing the pipe to precisely reach the clamp head 35 from the notch between the slot 13 and the lower clamp body 33 and the upper clamp body 34. At this time, the operator starts the motor to drive the threaded rod 26 to rotate, which in turn drives the bevel gear 27 to rotate. The bevel gear 27 then drives the gear transmission rod 28 to rotate inside the mounting box 25, which in turn drives another threaded rod 26 to rotate. Through the rotation of the two threaded rods 26, the two movable blocks 24 away from the mounting box 25 are moved... The threaded rod 26 performs a threaded motion, causing the movable block 24, which is away from the mounting box 25, to gradually move closer to the mounting box 25. This causes the lifting component 23 to rotate between the movable block 24 and the mounting block 22, pushing the movable block 24 upward. At the same time, it causes the lifting component 29 to rotate between the movable block 24 and the top fixed block 210, pushing the mounting plate 211 to move upward. The mounting plate 211 then causes the hydraulic clamp 3, which is fixed to the top by bolts, to move upward until the gap between the lower clamp body 33 and the upper clamp body 34 reaches the height required for disassembling or installing the oil pipe connection. At this point, the operator can activate the hydraulic cylinder 32 to move the clamp head 35 towards the center through the disc body 31 until all four clamp heads 35 are in contact with the pipe. By rotating, the two pipes can be separated or connected.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-tube oil well hydraulic power tong, comprising a mobile trolley (1), wherein a height adjustment mechanism (2) is fixedly connected to the top of the mobile trolley (1), and a hydraulic tong (3) is fixedly connected to the top of the height adjustment mechanism (2). Its features are: The height adjustment mechanism (2) includes two fixed seats (21), the bottom of the two fixed seats (21) is fixedly connected to the mobile trolley (1), and the top of the two fixed seats (21) is fixedly connected to a mounting block (22), and two lifting parts (23) are rotatably connected to the mounting block (22).

2. The dual-tube oil well hydraulic power tong according to claim 1, characterized in that: Both lifting members (23) have a movable block (24) fixedly connected to one end away from the mounting block (22), and a mounting box (25) is fixedly connected to one side of one of the movable blocks (24), and two threaded rods (26) are rotatably connected to the mounting box (25).

3. The dual-tube oil well hydraulic power tong according to claim 2, characterized in that: The outer walls of the two threaded rods (26) are threadedly connected to the movable block (24) away from the mounting box (25). One end of one of the threaded rods (26) is fixedly connected to the output end of the motor. The outer walls of the two threaded rods (26) inside the mounting box (25) are fixedly connected to bevel gears (27). The opposite sides of the two bevel gears (27) are meshed with gear transmission rods (28).

4. The dual-tube oil well hydraulic power tong according to claim 2, characterized in that: The top of each of the four movable blocks (24) is rotatably connected to a lifting component two (29). The four lifting components two (29) are divided into two groups. The end of each lifting component two (29) away from the movable block (24) is rotatably connected to a top fixing block (210). The top of the top fixing block (210) is fixedly connected to a mounting plate (211). The top of the mounting plate (211) is fixedly connected to the hydraulic clamp (3).

5. The dual-tube oil well hydraulic power tong according to claim 1, characterized in that: The mobile cart (1) includes a mobile cart (11), a fixed base plate (14) is fixedly connected to the middle of the mobile cart (11), the top of the fixed base plate (14) is fixedly connected to the fixed seat (21), a slot (13) is opened on the front side of the fixed base plate (14), and push rods (12) are rotatably connected to both sides of the mobile cart (11).

6. The dual-tube oil well hydraulic power tong according to claim 1, characterized in that: The hydraulic clamp (3) includes a disc body (31), the bottom of which is fixedly connected to a top fixing block (210) by bolts. A hydraulic cylinder (32) is provided on the top of the disc body (31). A lower clamp body (33) and an upper clamp body (34) are fixedly connected to one end of the disc body (31). The lower clamp body (33) and the upper clamp body (34) are arranged vertically. A clamp head (35) is provided inside the lower clamp body (33) and the upper clamp body (34).

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