Encircling type pipe screwing device

Abstract

The invention discloses a surrounding type pipe screwing device which comprises a pipe wrench body, the pipe wrench body is composed of a left caliper and a right caliper which are both semicircular, the left caliper and the right caliper are hinged, the two ends of the left caliper and the two ends of the right caliper are fixedly connected with connecting plates respectively, and pipe screwing mechanisms are installed between the two connecting plates of the left caliper and the two connecting plates of the right caliper. The two sets of pipe twisting mechanisms are arranged in a central symmetry mode, clamping assemblies are symmetrically arranged on the inner sides of the left caliper and the right caliper, fixing plates are further fixedly connected between openings of the left caliper and the right caliper and the connecting plate, an elastic opening and closing assembly is installed between the two fixing plates, and the ends, away from the pipe wrench body, of the two fixing plates are fixed through a plug pin assembly. By means of opening and closing of the left calipers and the right calipers, a drill rod is efficiently screwed and reliably clamped in cooperation with the pipe screwing mechanism, the clamping assembly and other components; during pipe screwing, the hydraulic rod pushes the push rod to compress the spring, and the spring compresses and transmits torque to unscrew the drill rod for dismantling; the clamping assembly enables the holding tile to clamp the drill rod through an adjusting screw rod, and the operation efficiency and quality are improved.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and more specifically to a ring-type pipe-tightening device for loosening threads in drilling. Background Technology

[0002] Currently, in the drilling field, all drill pipes and drilling tools are connected using threaded connections. While this method ensures a secure connection between the drill pipes and drilling tools, it also presents significant challenges for subsequent disassembly.

[0003] In the operation of traditional vertical shaft drilling rigs, the disassembly of drill pipe threads is a crucial and challenging task. Previously, construction workers relied primarily on traditional tools such as pipe wrenches, free-hand pliers, and wrenches to complete this task. However, these traditional tools have many drawbacks in practical application.

[0004] Disassembling drill pipes using traditional tools requires a tremendous amount of manual labor. Workers often need to operate the tools for extended periods with high intensity, constantly twisting and prying the drill pipes to overcome the friction and tension between the threads. This prolonged, high-intensity labor not only easily leads to worker fatigue and increases the likelihood of workplace injuries, but also poses potential health risks, such as muscle strain and joint pain.

[0005] Meanwhile, traditional methods of disassembling drill pipes significantly consume valuable drilling time. During disassembly, the inconvenience and inefficiency of the tools often require a considerable amount of time to complete the disassembly of a single drill pipe. This drastically reduces the effective operating time of the drilling rig, lowers overall drilling efficiency, and impacts project progress. Furthermore, improper tool use or operational errors during disassembly can damage the drill pipe threads, leading to wear, deformation, and other problems. This, in turn, affects the reusability and connection quality of the drill pipe, increasing replacement and maintenance costs.

[0006] Therefore, developing an efficient, convenient, and labor-saving drill pipe screwing device to solve the problems of traditional tools in disassembling drill pipe threads, such as consuming manual labor, occupying pure drilling time, and causing damage to the drill pipe threads, has become a key issue that urgently needs to be addressed in the current drilling construction field. Summary of the Invention

[0007] This invention provides a ring-type pipe-tightening device for loosening threads in drilling, in order to solve the problems existing in the above-mentioned background art.

[0008] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A ring-type pipe wrench includes a pipe wrench body composed of a left clamp and a right clamp, which are semi-circular and hinged together. Connecting plates are fixedly connected to both ends of the left and right clamps. A pipe wrench mechanism is installed between the two connecting plates of the left and right clamps. The two sets of pipe wrench mechanisms are centrally symmetrically arranged. Clamping components are symmetrically arranged on the inner sides of the left and right clamps. A fixing plate is also fixedly connected between the opening of the left and right clamps and the connecting plates. An elastic opening and closing component is installed between the two fixing plates. The ends of the two fixing plates away from the pipe wrench body are fixed by a pin assembly.

[0009] The pipe tightening mechanism includes a hydraulic rod. One end of the hydraulic rod is fixed to the inner side of the connecting plate by a screw, and the other end is fixedly connected to a push rod. The push rod extends out of the connecting plate and is slidably connected to it. A spring is sleeved on the inner side of the connecting plate. A limit ring is fixedly connected to one end of the push rod near the hydraulic rod. The two ends of the spring abut against the limit ring and the connecting plate, respectively.

[0010] The clamping assembly includes bearings, which are respectively disposed inside the left and right calipers. An adjusting screw is threadedly connected to the middle position of the left and right calipers, and one end of the adjusting screw is rotatably connected to the bearing.

[0011] The elastic opening and closing assembly includes a mounting groove, in which a first engaging component is rotatably connected. A return spring is fixedly connected to the lower part of the first engaging component near the opening of the mounting groove. A pressing block is fixedly connected to one side of the first engaging component, and a pressing rod is fixedly connected to the top of the pressing block. The pressing rod is slidably connected to the mounting groove, and the pressing block can move downward in the mounting groove under the action of the pressing rod. The first engaging component engages with a second engaging component. The mounting groove is mounted on one of the fixed plates, and the second engaging component is mounted on the other fixed plate. A telescopic rod is fixedly connected to the side of the mounting groove above the first engaging component.

[0012] The pin assembly includes a pin and a locking plate. One of the fixing plates has a pin hole on the end away from the pipe wrench body. The other fixing plate has locking plates symmetrically fixed on its top and bottom surfaces at the end away from the pipe wrench body. The locking plates have through holes. When the pipe wrench body is locked, the pin passes through the pin hole and the two locking plates respectively to lock and fix the pipe wrench body.

[0013] Furthermore, the telescopic rod includes a fixed rod, a sliding rod, and a compression spring. The fixed rod is fixedly connected to the mounting groove, the sliding rod is slidably connected inside the fixed rod, and the compression spring is located inside the telescopic rod. Both ends of the compression spring are fixedly connected to both ends of the telescopic rod, respectively.

[0014] Furthermore, the push rod has a threaded section at one end near the hydraulic rod, and an adjusting nut is threaded onto the threaded section. There are two adjusting nuts, and the two ends of the spring abut against the adjusting nut and the connecting plate, respectively.

[0015] Furthermore, an anti-slip strip is provided at the other end of the adjusting screw, and the anti-slip strip is spaced apart on the outer periphery of the other end of the adjusting screw.

[0016] Furthermore, the top of the bracket is narrow and the bottom is wide, and its cross-section is a right trapezoid.

[0017] Furthermore, handles are fixedly provided on the outer sides of both connecting plates that are fixedly connected to the fixing plate.

[0018] The present invention has the following beneficial effects: (1) This invention achieves efficient screwing and reliable clamping of drill rods by using the opening and closing action of the left and right calipers, in conjunction with the screwing mechanism, clamping assembly, elastic opening and closing assembly and pin assembly, etc. When screwing the drill rod, the hydraulic rod pushes the push rod to compress the spring, and the torque transmitted by the spring compression is used to loosen the drill rod, thereby removing the drill rod; the clamping assembly clamps the drill rod with the bearing by adjusting the screw, and the bearing is narrow at the top and wide at the bottom to increase the locking performance, ensuring the stable fixation of the drill rod during the operation, and improving the efficiency and quality of the screwing operation.

[0019] (2) The present invention provides a threaded section and an adjusting nut on the push rod. By turning the adjusting nut, the extension length of the push rod can be adjusted, thereby adjusting the tightening torque of the pipe wrench body to meet different working requirements. An anti-slip strip is provided at the other end of the adjusting screw, which increases the friction and makes it easier for the operator to rotate the adjusting screw, improving the convenience and accuracy of adjustment, and enabling the device to cope with various actual working conditions more flexibly.

[0020] (3) The design of the elastic opening and closing component of the present invention allows the pipe wrench to be opened and closed quickly by pressing the pressing rod after the pipe wrench has finished the pipe tightening work, which is simple and convenient to operate; when the pipe wrench is working, the pin component can be inserted into the locking plate and the pin hole to fix the opening of the pipe wrench, ensuring the stability of the work and making the operation easy to master; in addition, the two connecting plates that are fixedly connected to the fixing plate are provided with handles on the outside, which makes it convenient for the operator to operate the pipe wrench, further improving the overall convenience of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the screwing mechanism of the present invention; Figure 3 This is a schematic diagram of the clamping assembly structure of the present invention; Figure 4 This is a schematic diagram of the pin assembly structure of the present invention; Figure 5 This is a schematic diagram of the installation position of the elastic opening and closing component of the present invention; Figure 6 This is a schematic diagram of the elastic opening and closing component structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the telescopic rod of the present invention; In the diagram, 1-pipe wrench body, 2-left caliper, 3-right caliper, 4-connecting plate, 5-clamping assembly, 51-bracelet, 52-adjusting screw, 53-anti-slip strip, 6-fixing plate, 7-elastic opening and closing assembly, 71-mounting groove, 72-clamping part one, 73-reset spring, 74-pressing block, 75-pressing rod, 76-clamping part two, 77-telescopic rod, 771-fixed rod, 772-sliding rod, 773-compression spring, 8-pin assembly, 81-pin, 82-locking plate, 83-pin hole, 84-through hole, 9-hydraulic rod, 10-push rod, 11-spring, 12-limiting ring, 13-threaded section, 14-adjusting nut, 15-handle. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] Example 1

[0024] A type of circumferential pipe-twisting device, as shown in the attached image. Figure 1-7 As shown, the device includes a pipe wrench body 1, which consists of a left clamp 2 and a right clamp 3, both of which are semi-circular rings connected together by a hinge, allowing the left clamp 2 and right clamp 3 to rotate relative to each other around the hinge point to achieve opening and closing action; each end of the left clamp 2 and right clamp 3 is fixedly connected to a connecting plate 4, which serves to connect and support other components; a pipe tightening mechanism is installed between the two connecting plates 4 of the left clamp 2 and right clamp 3, and the two sets of pipe tightening mechanisms are centrally symmetrically arranged; clamping components 5 are symmetrically arranged on the inner side of the left clamp 2 and right clamp 3; a fixing plate 6 is also fixedly connected between the opening of the left clamp 2 and right clamp 3 and the connecting plate 4; an elastic opening and closing component 7 is installed between the two fixing plates 6; the ends of the two fixing plates 6 away from the pipe wrench body 1 are fixed by a pin component 8.

[0025] The screwing mechanism includes a hydraulic rod 9, one end of which is fixed to the inner side of a connecting plate 4 by a screw, and the other end is fixedly connected to a push rod 10. The push rod 10 extends out of the connecting plate 4 and is slidably connected to it. A spring 11 is sleeved on the inner side of the push rod 10 within the connecting plate 4. A limit ring 12 is fixedly connected to the end of the push rod 10 near the hydraulic rod 9, and the two ends of the spring 11 abut against the limit ring 12 and the connecting plate 4, respectively. When it is necessary to screw the drill rod, the hydraulic rod 9 is activated, and the hydraulic rod 9 extends to push the push rod 10 within the connecting plate 4. The plate 4 slides inside, at which time the hydraulic rod 9 compresses the spring 11. During this process, the spring 11 provides a pushing torque to the left caliper 2 and the right caliper 3 respectively, thereby pushing the drill rod to rotate. Due to the central symmetrical arrangement of the pipe tightening mechanism, the rotating rod can be rotated quickly and stably. When the spring 11 is compressed to the designated position, the hydraulic rod 9 retracts and the spring 11 returns to its original position. After the retraction is completed, the hydraulic rod 9 extends again to compress the spring 11. When the spring 11 is compressed to the designated position, the hydraulic rod 9 retracts. This cycle repeats until the drill rod is completely disassembled.

[0026] The clamping assembly 5 includes bearings 51, which are respectively disposed inside the left caliper 2 and the right caliper 3. An adjusting screw 52 is threadedly connected to the middle position of the left caliper 2 and the right caliper 3. One end of the adjusting screw 52 is rotatably connected to the bearing 51. The bearing 51 is narrow at the top and wide at the bottom, and its cross-section is a right trapezoid. When it is necessary to clamp the drill rod, the adjusting screw 52 is turned. At this time, the two bearings 51 move towards each other, thereby clamping the drill rod. Furthermore, the fact that the bearings 51 are narrow at the top and wide at the bottom further increases the locking ability of the bearings 51.

[0027] The elastic opening and closing assembly 7 includes a mounting groove 71. A locking element 72 is rotatably connected within the mounting groove 71. A return spring 73 is fixedly connected to the lower part of the locking element 72 near the opening of the mounting groove 71. A pressing block 74 is fixedly connected to one side of the locking element 72. A pressing rod 75 is fixedly connected to the top of the pressing block 74. The pressing rod 75 is slidably connected to the mounting groove 71. The pressing block 74 can move downwards within the mounting groove 71 under the action of the pressing rod 75. A locking element 76 is engaged with the locking element 72. The mounting groove 71 is mounted on one of the fixing plates 6, and the locking element 76 is mounted on the other fixing plate 6. A telescopic rod 77 is fixedly connected to the side of the mounting groove 71 above the locking element 72. The telescopic rod 77 includes a fixed rod 771, a sliding rod 772, and a compression spring 773. The fixed rod 771 is fixedly connected to the mounting groove 71, and the sliding rod 772 is slidably connected to the mounting groove 71. Inside the fixed rod 771, the compression spring 773 is located inside the telescopic rod 77, and the two ends of the compression spring 773 are fixedly connected to the two ends of the telescopic rod 77 respectively. When the pipe wrench body 1 is working, the opening of the pipe wrench body 1 is closed, and the two fixed plates 6 are brought together. During this process, the first locking part 72 squeezes the second locking part 76, the first locking part 72 compresses the return spring 73 and rotates downward at the same time. At this time, the first locking part 72 and the second locking part 76 are engaged, and the second locking part 76 compresses the telescopic rod 77. The first locking part 72 and the second locking part 76 are limited and fixed under the action of the return spring 73. After the pipe tightening work is completed, the pressing rod 75 is pressed. At this time, the pressing rod 75 drives the pressing block 74 to move downward, which in turn drives the first locking part 72 to move downward. At this time, the first locking part 72 and the second locking part 76 are separated, and the return of the compression spring 773 provides a thrust to the second locking part 76 away from the telescopic rod 77, thereby realizing the rapid opening and closing of the pipe wrench.

[0028] The pin assembly 8 includes a pin 81 and a locking plate 82. One of the fixing plates 6 has a pin hole 83 on the end away from the pipe wrench body 1. The other fixing plate 6 has locking plates 82 symmetrically fixed on its top and bottom surfaces on the end away from the pipe wrench body 1. The locking plate 82 has a through hole 84. When the pipe wrench body 1 is locked, the pin 81 passes through the pin hole 83 and the two locking plates 82 respectively to lock and fix the pipe wrench body 1. When the pipe wrench body 1 is working, the pin 81 is inserted into the locking plate 82 and the pin hole 83 respectively to fix the opening of the pipe wrench body 1, ensuring the stability of the pipe wrench body 1 during operation.

[0029] Furthermore, in order to facilitate the operation of the pipe wrench body 1, handles 15 are fixedly provided on the outer sides of the two connecting plates 4 that are fixedly connected to the fixing plate 6.

[0030] Work process First, clamp the left clamp 2 and right clamp 3 of the pipe wrench body 1 onto the drill rod that needs to be loosened and removed. Then, close the openings of the left clamp 2 and right clamp 3. During this process, the elastic opening and closing assembly 7 engages to initially lock the left clamp 2 and right clamp 3. At the same time, pass the pin 81 through the through hole 84 on the locking plate 82 and insert it into the pin hole 83 to lock and fix the pipe wrench body 1 as a whole. Next, adjust the clamping assembly 5 so that the two bearings 5 ​​lock the drill rod. After the adjustment is completed, start the hydraulic rod 9. The hydraulic rod 9 extends and pushes the push rod 10 to slide in the connecting plate 4. At this time, the hydraulic rod 9 presses against the spring 11. During compression, spring 11 provides a pushing torque to the left caliper 2 and right caliper 3, thereby pushing the drill pipe to rotate and loosening it. When spring 11 is compressed to the designated position, hydraulic rod 9 retracts, and spring 11 returns to its original position. After retraction, hydraulic rod 9 extends to compress spring 11. When spring 11 is compressed to the designated position, hydraulic rod 9 retracts. This cycle repeats until the drill pipe is disassembled. After disassembly, pin 81 is pulled out, and pressing rod 75 is pressed. Left caliper 2 and right caliper 3 spring open under the action of telescopic rod 77, completing the rapid opening of pipe wrench body 1 and thus completing the disassembly of pipe wrench body 1.

[0031] Example 2

[0032] As a further improvement to the above embodiments, the following technical solutions are provided: Figure 2 As shown, in order to adjust the initial extension length of the push rod 10 and thus adjust the tightening torque of the pipe wrench body 1 to meet different working requirements, the difference from the above embodiment is that a threaded section 13 is provided, and an adjusting nut 14 is threadedly connected to the threaded section 13. There are two adjusting nuts 14. The two ends of the spring 11 abut against the adjusting nut 14 and the connecting plate 4 respectively. When adjustment is needed, the extension length of the push rod 10 is adjusted by turning the adjusting nut 14. In this embodiment, there are two adjusting nuts 14. This setting can prevent the adjusting nuts 14 from rotating accidentally during the operation and ensure the smooth operation of the work process.

[0033] Example 3

[0034] As a further improvement to the above embodiments, the following technical solutions are provided: Figure 3 As shown, to facilitate the rotation of the adjusting screw 52, ​​the difference from the above embodiment is that the other end of the adjusting screw 52 is also provided with an anti-slip strip 53. The anti-slip strip 53 is spaced apart on the outer periphery of the other end of the adjusting screw 52. The anti-slip strip 53 can increase the friction and improve the operability of the adjusting screw 52.

Claims

1. A ring-type pipe-twisting device, characterized in that, The device includes a pipe wrench body (1), which is composed of a left caliper (2) and a right caliper (3). The left caliper (2) and the right caliper (3) are semi-circular rings. The left caliper (2) and the right caliper (3) are hinged together. Both ends of the left caliper (2) and the right caliper (3) are respectively fixedly connected to connecting plates (4). A pipe tightening mechanism is installed between the two connecting plates (4) of the left caliper (2) and the right caliper (3). The two sets of pipe tightening mechanisms are centrally symmetrically arranged. Clamping components (5) are symmetrically arranged on the inner side of the left caliper (2) and the right caliper (3). A fixing plate (6) is also fixedly connected between the opening of the left caliper (2) and the right caliper (3) and the connecting plate (4). An elastic opening and closing component (7) is installed between the two fixing plates (6). The two fixing plates (6) are fixed away from the pipe wrench body (1) by a pin component (8).

2. The circumferential pipe-twisting device according to claim 1, characterized in that, The screwing mechanism includes a hydraulic rod (9), one end of which is fixed to the inside of the connecting plate (4) by a screw, and the other end is fixedly connected to a push rod (10). The push rod (10) extends out of the connecting plate (4) and is slidably connected to it. A spring (11) is sleeved on the inside of the connecting plate (4) of the push rod (10). A limit ring (12) is fixedly connected to one end of the push rod (10) near the hydraulic rod (9). The two ends of the spring (11) abut against the limit ring (12) and the connecting plate (4) respectively.

3. The annular screw-in device according to claim 1, characterized in that, The clamping assembly (5) includes a bearing (51), which is respectively disposed inside the left caliper (2) and the right caliper (3). An adjusting screw (52) is threadedly connected to the middle position of the left caliper (2) and the right caliper (3), and one end of the adjusting screw (52) is rotatably connected to the bearing (51).

4. The annular screw-in device according to claim 1, characterized in that, The elastic opening and closing assembly (7) includes a mounting groove (71), in which a locking component (72) is rotatably connected. A return spring (73) is fixedly connected below the opening of the mounting groove (71) of the locking component (72). A pressing block (74) is fixedly connected to one side of the locking component (72). A pressing rod (75) is fixedly connected to the top of the pressing block (74). The pressing rod (75) is slidably connected to the mounting groove (71). The pressing block (74) can move downward in the mounting groove (71) under the action of the pressing rod (75). The locking component (72) engages with a locking component (76). The mounting groove (71) is installed on one of the fixing plates (6). The locking component (76) is installed on another fixing plate (6). A telescopic rod (77) is fixedly connected to the side of the mounting groove (71) above the locking component (72).

5. The annular screw-in device according to claim 1, characterized in that, The pin assembly (8) includes a pin (81) and a locking plate (82). One of the fixing plates (6) has a pin hole (83) on the end away from the pipe wrench body (1). The other fixing plate (6) has a locking plate (82) symmetrically fixed on the top and bottom surfaces of the end away from the pipe wrench body (1). The locking plate (82) has a through hole (84). When the pipe wrench body (1) is locked, the pin (81) passes through the pin hole (83) and the two locking plates (82) respectively to lock and fix the pipe wrench body (1).

6. The annular screw-in device according to claim 4, characterized in that, The telescopic rod (77) includes a fixed rod (771), a sliding rod (772), and a compression spring (773). The fixed rod (771) is fixedly connected to the mounting groove (71), the sliding rod (772) is slidably connected inside the fixed rod (771), and the compression spring (773) is located inside the telescopic rod (77). The two ends of the compression spring (773) are fixedly connected to the two ends of the telescopic rod (77) respectively.

7. The circumferential pipe-twisting device according to claim 2, characterized in that, The push rod (10) has a threaded section (13) at one end near the hydraulic rod (9). An adjusting nut (14) is threaded onto the threaded section (13). There are two adjusting nuts (14). The two ends of the spring (11) abut against the adjusting nut (14) and the connecting plate (4) respectively.

8. The annular screw-in device according to claim 3, characterized in that, The other end of the adjusting screw (52) is also provided with anti-slip strips (53), which are spaced apart on the outer periphery of the other end of the adjusting screw (52).

9. The annular screw-in device according to claim 3, characterized in that, The bracket (51) is narrow at the top and wide at the bottom, and its cross-section is a right trapezoid.

10. The annular screw-in device according to claim 1, characterized in that, Handles (15) are fixedly provided on the outer sides of the two connecting plates (4) that are fixedly connected to the fixing plate (6).

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