Locking bolt oil pipe elevator

Abstract

The utility model belongs to the technical field of elevators, particularly relates to an oil pipe elevator with a locking bolt, and aims to solve the problems of potential safety hazards caused by falling of a lifting ring from a lifting ring groove and incapability of effectively fixing oil pipes with different diameters due to easy falling of the bolt from the elevator due to shaking in the prior art. A notch is formed in the top of the main body, a sliding arc plate is connected in the notch in a sliding mode, and two side lugs are symmetrically arranged on the outer side of the main body. According to the lifting ring locking device, through the two sets of locking assemblies, by means of matching of pulling force generated during lifting and a locking pin, locking of the lifting ring is achieved, and the lifting ring is effectively prevented from falling off from a lifting ring groove in the lifting process; the lifting stability and safety are improved, the elevator can be suitable for oil pipes, limiting pipes and limiting pins with different diameters by adjusting the inclined plane limiting blocks, the oil pipes are prevented from falling off due to looseness of the sliding arc plates, and the overall safety is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator slips, in particular to a locking pin tubing elevator slip. Background Art

[0002] A tubing elevator slip is a special tool used for suspending the lifting and lowering of tubing in oil drilling and production operations. When lowering or pulling out tubing one by one into an oil well, it is necessary to use a tubing elevator slip to clamp the coupling at the upper part of each tubing, and then lift it to realize the operation of tripping tubing. After the tubing elevator slip is clamped on the coupling at the upper part of the tubing, the lower parts of the two lifting rings should be symmetrically hung in the two symmetric lifting ring grooves of the tubing elevator slip, and then a pin is inserted into the tubing elevator slip to close the lifting ring groove, ensuring that the lifting ring cannot fall out of the lifting ring groove during tripping tubing and preventing accidents.

[0003] In the existing technology, when closing the lifting ring groove, a pin is usually inserted into the pin hole on the tubing elevator slip. However, during actual use, the lifted tubing will shake, causing the elevator slip to shake as well, resulting in the pin on it being easily detached from the elevator slip, leading to the lifting ring falling out of the lifting ring groove and causing the tubing to fall, posing a safety hazard. Moreover, the size of the elevator slip is fixed, and it is difficult to effectively fix it when hoisting tubing with different diameters. Therefore, we propose a locking pin tubing elevator slip to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages in the existing technology that due to shaking, the pin is easily detached from the elevator slip, resulting in the lifting ring falling out of the lifting ring groove, posing a safety hazard, and being unable to effectively fix tubing with different diameters, and to propose a locking pin tubing elevator slip.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A locking pin tubing elevator slip includes a main body. A notch is formed at the top of the main body. A sliding arc plate is slidably connected in the notch. Two side ears are symmetrically arranged on the outer side of the main body. Lifting ring grooves are formed on both side ears. First openings are formed on one side of each of the two side ears away from each other, and the first openings communicate with the corresponding lifting ring grooves. First grooves are formed at the top of both side ears, and the first grooves communicate with the lifting ring grooves. A second opening is formed on one side of the main body. A sliding rod is arranged on the outer side of the sliding arc plate. The sliding rod passes through the second opening and is slidably connected to the second opening. The elevator slip further includes:

[0007] Two groups of locking components, which are arranged inside the corresponding first grooves and are used for locking the lifting rings located in the lifting ring grooves to prevent the lifting rings from falling off;

[0008] Two groups of limiting components are arranged at the top of the corresponding side ears and are used to fix oil pipes with different diameters, facilitating lifting.

[0009] In a possible design, the locking component includes a fixed rod, the two ends of the fixed rod are respectively fixedly connected to the inner walls on both sides of the first groove, a first rotating block is rotatably connected to the fixed rod, a first sliding groove is formed in the first rotating block, an arc-shaped moving block is slidably connected in the first sliding groove, and the arc-shaped moving block is located inside the hanging ring groove. A second groove is formed at one end of the first rotating block, second sliding grooves are formed in the inner walls on both sides of the second groove, the same limiting rod is slidably connected in the two second sliding grooves, a locking pin is fixedly connected to the limiting rod, a pin hole corresponding to the locking pin is arranged on the bottom inner wall of the first opening, and the locking pin is inserted into the pin hole.

[0010] In a possible design, inserting pin limiting blocks are fixedly connected to the inner walls on both sides of the first groove, a second limiting groove corresponding to the locking pin is arranged on one side of the inserting pin limiting block close to the locking pin, and the locking pin is slidably connected to the second limiting groove.

[0011] In a possible design, the limiting component includes two supporting blocks, both of the two supporting blocks are fixed on the top of the side ear, the same second rotating block is rotatably connected to the sides of the two supporting blocks close to each other, a third groove and a fourth groove are respectively formed at the two ends of the second rotating block, wherein the third groove is located on the side far from the main body, third sliding grooves are formed in the inner walls on both sides of the third groove, the same supporting rod is slidably connected in the two third sliding grooves, the bottom of the supporting rod is fixedly connected to the top of the first rotating block, fourth sliding grooves are formed in the inner walls on both sides of the fourth groove, a bevel limiting block is slidably connected in the two fourth sliding grooves, a second limiting groove corresponding to the bevel limiting block is formed inside the main body, and the bevel limiting block is slidably connected to the inner walls on both sides of the second limiting groove.

[0012] In a possible design, a pull spring is fixedly arranged inside the bottom of the first groove, and the top of the pull spring is fixedly connected to the bottom of the second rotating block.

[0013] In a possible design, two limiting tubes are arranged on one side of the main body and above the second opening, the same limiting pin is slidably connected in the two limiting tubes, and is used to limit the sliding rod to prevent the oil pipe from falling off due to the movement of the sliding arc plate during the use of the elevator.

[0014] In this application, first hold the elevators and open the sliding arc plate to ensure that the opening is large enough to clamp the tubing or drill pipe collar. Then place the elevators steadily below the tubing or drill pipe collar to ensure close fit between the elevators and the tubing or drill pipe collar. Next, quickly and steadily close the sliding arc plate to ensure that the tubing or drill pipe collar is firmly clamped. At the same time, use the limit pins on the two limit tubes to limit the sliding arc plate and prevent loosening.

[0015] Then, put the sling eyes into the sling eye slots on both sides of the elevator body. When the sling eyes are lifted after being placed in the sling eye slots, the sling eyes exert an upward pulling force on the arc-shaped moving block. Through the arc-shaped moving block, one end of the first rotating block is driven upward and the other end is driven downward. The locking pin provided at the downward-displaced end of the first rotating block is inserted downward into the pin hole provided on the bottom inner wall of the first opening, thereby locking the sling eyes. Since there is a continuous pulling force during the lifting process, one end of the first rotating block remains downward and the other end remains upward, so the locking pin will always be stably inserted into the pin hole, thus continuously maintaining the locked state.

[0016] When lifting a tubing with a diameter smaller than the inner diameter of the main body, when the arc-shaped moving block drives one end of the first rotating block upward, the support rod provided at the upward-displaced end of the first rotating block also moves upward. One end of the second rotating block slidably connected to the support rod also moves upward, causing the other end to move downward. The inclined surface limiting block provided at the downward-displaced end of the second rotating block is inserted into the second limiting groove provided inside the main body due to downward movement, so that the inclined surface limiting block fills the gap between the tubing and the main body, making the tubing stable inside the main body, and thus different-diameter tubing can be fixed and lifted.

[0017] After the hoisting is completed, the setting of the tension spring ensures that when there is no external force, the second rotating block can automatically reset to the initial state, causing the locked locking pin to reset and unlocking, which is convenient for the next use.

[0018] Beneficial effects:

[0019] In the present utility model, for the locking pin tubing elevator, through two sets of locking components, with the cooperation of the pulling force during hoisting and the locking pin, the sling eyes are locked, effectively preventing the sling eyes from falling off the sling eye slots during hoisting, and improving the stability and safety of hoisting.

[0020] In the present utility model, for the locking pin tubing elevator, the two sets of limiting components enable the elevator to be applicable to different-diameter tubing. By adjusting the position of the inclined surface limiting block, tight fixation of the tubing is achieved, which is not only convenient for operation but also improves work efficiency.

[0021] In the present utility model, the added limiting tube and limiting pin on the main body of the locking bolt tubing elevator further ensure the stability of the sliding arc plate during use, prevent the tubing from falling off due to the loosening of the sliding arc plate, and enhance the overall safety.

[0022] In the present utility model, through two groups of locking components, the cooperation of the pulling force during lifting and the locking pin realizes the locking of the lifting ring, effectively preventing the lifting ring from falling out of the lifting ring groove during hoisting, improving the stability and safety of hoisting. By adjusting the inclined surface limiting block, the elevator can be applied to tubing with different diameters. The limiting tube and limiting pin prevent the tubing from falling off due to the loosening of the sliding arc plate, enhancing the overall safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structure diagram of a locking bolt tubing elevator proposed by the present utility model;

[0024] Figure 2 is a structure diagram of another perspective of a locking bolt tubing elevator proposed by the present utility model;

[0025] Figure 3 is a partial sectional three-dimensional structure diagram of a locking bolt tubing elevator proposed by the present utility model;

[0026] Figure 4 is a three-dimensional structure diagram of the locking component of a locking bolt tubing elevator proposed by the present utility model;

[0027] Figure 5 is a partial sectional three-dimensional structure diagram of the locking component of a locking bolt tubing elevator proposed by the present utility model.

[0028] In the figure: 1, main body; 101, second opening; 2, sliding arc plate; 201, sliding rod; 3, side ear; 301, lifting ring groove; 302, first opening; 303, first groove; 4, limiting pin; 5, first rotating block; 501, first chute; 502, second groove; 6, arc-shaped moving block; 7, limiting rod; 8, locking pin; 9, fixed rod; 10, support block; 11, second rotating block; 111, third groove; 112, fourth groove; 12, inclined surface limiting block; 13, support rod; 14, tension spring; 15, bolt limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0030] Embodiment 1

[0031] Reference Figures 1-5 Figures 1-5 , a lifting clamp, comprising a main body 1, a sliding arc plate 2, side ears 3 and supporting locking components and limiting components. The main body 1 serves as the basic framework of the lifting clamp. A notch is provided at the top thereof for accommodating the sliding arc plate 2. A second opening 101 is further provided on one side of the main body 1 to facilitate the passing through and sliding of the sliding rod 201. The sliding arc plate 2 is slidably connected to the second opening 101 of the main body 1 through the sliding rod 201. Two side ears 3 are symmetrically arranged on the outer side of the main body 1. A sling groove 301 is provided on each side ear 3 for installing a sling. The first opening 302 is communicated with the sling groove 301 to facilitate the operation of the locking component. A first groove 303 is further provided at the top of the side ear 3, which is also communicated with the sling groove 301 for installing the locking component.

[0032] Each set of locking components includes a fixed rod 9, a first rotating block 5, an arc-shaped moving block 6, a limiting rod 7 and a locking pin 8. The fixed rod 9 is fixed on the inner walls of both sides of the first groove 303. The first rotating block 5 is rotatably connected to the fixed rod 9 through a bearing. The first chute 501 thereon allows the arc-shaped moving block 6 to slide in the sling groove 301 to clamp or release the sling. A second groove 502 is provided at one end of the first rotating block 5, with two second chutes built therein. The limiting rod 7 is slidably connected to these two chutes. The locking pin 8 fixed thereon can be inserted into the pin hole at the bottom of the first opening 302 when rotated to a certain position to achieve locking.

[0033] Each set of limiting components includes two support blocks 10, a second rotating block 11, an inclined surface limiting block 12 and a support rod 13. The support blocks 10 are fixed on the top of the side ear 3. The second rotating block 11 is rotatably connected between the two support blocks. The third groove 111 thereon is slidably connected to the support rod 13. The bottom of the support rod 13 is fixed to the first rotating block 5 to achieve linkage. The inclined surface limiting block 12 in the fourth groove 112 can slide in the second limiting groove inside the main body 1. By rotating the second rotating block 11, the position of the inclined surface limiting block 12 is adjusted to adapt to and fix oil pipes with different diameters.

[0034] This application can be used in the technical field of lifting clamps and can also be used in other fields applicable to this application.

[0035] Embodiment 2

[0036] Reference Figures 1-4 Figures 1-4 , on the basis of Embodiment 1: A locking plug oil pipe lifting clamp, which is applied to the technical field of lifting clamps. To enhance the stability of the locking pin 8, plug limiting blocks 15 are further provided on the inner walls of both sides of the first groove 303, with second limiting grooves corresponding to the locking pin 8 thereon to limit the sliding range of the locking pin 8. At the same time, a tension spring 14 is provided at the bottom of the first groove 303, with one end fixed to the bottom of the groove and the other end connected to the second rotating block 11 to provide a restoring force for the second rotating block.

[0037] On one side of the main body 1 and above the second opening 101, two limiting tubes are added. A limiting pin 4 is slidably connected in the two limiting tubes. After adjusting the sliding arc plate 2 to a suitable position, the limiting pin 4 can be inserted into the limiting tubes to perform additional limitation on the sliding rod 201, further improving the safety during use and preventing the oil pipe from accidentally falling off.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A locking latch oil pipe elevator, comprising a main body (1), a notch is provided on the top of the main body (1), a sliding arc plate (2) is slidably connected in the notch, two side ears (3) are symmetrically arranged on the outer side of the main body (1), a lifting ring groove (301) is provided on the two side ears (3), a first opening (302) is provided on the side away from each other of the two side ears (3), the first opening (302) is connected to the corresponding lifting ring groove (301), a first groove (303) is provided on the top of the two side ears (3), the first groove (303) is connected to the lifting ring groove (301), a second opening (101) is provided on one side of the main body (1), a sliding rod (201) is provided on the outer side of the sliding arc plate (2), the sliding rod (201) passes through the second opening (101) and is slidably connected to the second opening (101), characterized in that The elevator also includes: Two sets of locking components, the locking components are arranged inside the corresponding first groove (303) and are used to lock the lifting ring located in the lifting ring groove (301) to prevent the lifting ring from falling off; Two sets of limit assemblies are arranged on the top of the corresponding side ears (3) and are used to fix oil pipes of different diameters for easy lifting.

2. The locking pin oil pipe elevator according to claim 1, characterized in that: The locking assembly comprises a fixed rod (9), the two ends of the fixed rod (9) are respectively fixedly connected to the inner walls on both sides of the first groove (303), the fixed rod (9) is rotatably connected to a first rotating block (5), the first rotating block (5) is provided with a first sliding groove (501), an arc-shaped moving block (6) is slidably connected in the first sliding groove (501), and the arc-shaped moving block (6) is located inside the lifting ring groove (301), a second groove (502) is provided at one end of the first rotating block (5), the inner walls on both sides of the second groove (502) are provided with second sliding grooves, the same limiting rod (7) is slidably connected in the two second sliding grooves, a locking pin (8) is fixedly connected to the limiting rod (7), and a pin hole corresponding to the locking pin (8) is provided on the bottom inner wall of the first opening (302), and the locking pin (8) is inserted into the pin hole.

3. The locking pin oil pipe elevator according to claim 2, characterized in that: The inner walls on both sides of the first groove (303) are fixedly connected with latch stop blocks (15), and a second stop groove corresponding to the locking pin (8) is provided on one side of the latch stop block (15) close to the locking pin (8), and the locking pin (8) is slidably connected to the second stop groove.

4. The locking pin oil pipe elevator according to claim 2, characterized in that: The limiting assembly comprises two support blocks (10), the two support blocks (10) are both fixed on the top of the side ears (3), the two support blocks (10) are rotatably connected to the same second rotating block (11) on the side close to each other, the second rotating block (11) is provided with a third groove (111) and a fourth groove (112) at two ends, wherein the third groove (111) is located on the side away from the main body (1), the inner walls on both sides of the third groove (111) are provided with third sliding grooves, the two third sliding grooves are slidably connected to the same support rod (13), the bottom of the support rod (13) is fixedly connected to the top of the first rotating block (5), the inner walls on both sides of the fourth groove (112) are provided with fourth sliding grooves, the two fourth sliding grooves are slidably connected to the inclined surface limiting blocks (12), the interior of the main body (1) is provided with a second limiting groove corresponding to the inclined surface limiting block (12), and the inclined surface limiting block (12) is slidably connected to the inner walls on both sides of the second limiting groove.

5. The locking latch oil pipe elevator according to claim 4, characterized in that: A tension spring (14) is fixedly arranged inside the bottom of the first groove (303), and the top of the tension spring (14) is fixedly connected to the bottom of the second rotating block (11).

6. The locking pin oil pipe elevator according to claim 1, characterized in that: Two limiting tubes are arranged on one side of the main body (1) and above the second opening (101), and a same limiting pin (4) is slidably connected inside the two limiting tubes for limiting the sliding rod (201) to prevent the oil pipe from falling off due to the movement of the sliding arc plate (2) when the elevator is in use.

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