Adjustable multifunctional oil pipe back-up wrench

Abstract

The utility model discloses an adjustable multifunctional oil pipe back-up wrench which comprises an outer shell, a cavity is formed in one side of the interior of the outer shell, the center line of the cavity and the center line of the outer shell are located on the same horizontal plane, an arc-shaped bin is arranged in the outer shell, and the center line of the arc-shaped bin and the center line of the outer shell are located on the same horizontal plane. An adjusting structure used for adjusting the clamping inner diameter is arranged in the arc-shaped bin. According to the adjustable multifunctional oil pipe back-up wrench, the arc-shaped bin is arranged, when the adjustable multifunctional oil pipe back-up wrench is used, an inner hexagonal hoop is rotated to drive four sets of movable clamping plates in the inner hexagonal hoop to contract, the movable clamping plates drive the wrench teeth to move while contracting, the wrench teeth are attached to the outer portion of an oil pipe for clamping, and fixing plates in movable through grooves can push out the movable clamping plates through springs; the movable clamping plate is tightly attached to the interior of the inner hexagonal hoop, the fixed plate is matched with the movable through groove to limit the movable clamping plate so as to prevent the movable clamping plate from shaking, and the problem that the clamping inner diameter cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe backup tongs, in particular to an adjustable multifunctional oil pipe backup tong. Background Art

[0002] Tubing backup tongs are commonly used equipment in oilfield workover operations. They are used to clamp the tubing to facilitate construction operations, reduce the difficulty of construction personnel's work, and provide protection, thereby improving the safety of construction operations and reducing the probability of accidents. They play an important role in workover operations.

[0003] However, the tubing backup tongs currently used in oilfield workover operations still have some defects in use. The diameter of the tubing applicable to use is fixed, and the inner diameter of the backup tong cannot be adjusted according to the diameter of the tubing to be clamped.

[0004] Now a novel adjustable multifunctional tubing backup tong is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an adjustable multifunctional oil pipe backup tong to solve the problem that the clamping inner diameter cannot be adjusted in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an adjustable multifunctional tubing backup tong, comprising a shell, a cavity is provided on one side of the shell, the center line of the cavity is on the same horizontal plane as the center line of the shell, an arc-shaped bin is provided inside the shell, the center line of the arc-shaped bin is on the same horizontal plane as the center line of the shell, and an adjustment structure for adjusting the clamping inner diameter is provided inside the arc-shaped bin;

[0007] The adjustment structure includes an inner hexagonal hoop, the inner part of the arc-shaped warehouse is movably connected with the inner hexagonal hoop, the inner part of the arc-shaped warehouse is provided with four groups of movable through grooves, the inner part of the movable through grooves is movably connected with a movable splint, one end of the movable splint is provided with an empty groove, the inner part of the movable through groove is fixedly connected with a fixed plate, one end of the fixed plate is fixedly connected with a spring, and one end of the movable splint is fixedly connected with a clamp tooth.

[0008] Preferably, the spring is fixedly connected to the empty slot, and the fixing plate is slidably connected to the empty slot.

[0009] Preferably, the movable through grooves provided inside the arc-shaped bin are arranged at equal intervals, and the inner hexagonal hoop is movably connected to the movable splint.

[0010] Preferably, two groups of limiting grooves are provided at one end of the hexagonal sleeve, fixed blocks are fixedly connected to the two ends of the arc-shaped warehouse, a second tooth block is fixedly connected to one side of the hexagonal sleeve, a transmission gear is movably connected to the inside of the cavity, a groove is provided on one side of the top of the outer shell, a cylinder is fixedly connected to the inside of the groove, an output end of the cylinder extends to the inside of the cavity and is fixedly connected to a movable strip plate, a first tooth block is fixedly connected to one side of the movable strip plate, and a slot is provided at the bottom end of the cavity.

[0011] Preferably, the first tooth block is meshedly connected to the transmission gear, and the second tooth block is meshedly connected to the transmission gear.

[0012] Preferably, the movable strip is movably connected to the slot, and the fixed block is slidably connected to the limiting groove.

[0013] Preferably, a threaded hole is opened at one end of the shell, a fixing ring is fixedly connected to one end of the shell, a protective cover plate is movably connected to one end of the shell, and a fixing bolt is movably connected to one end of the protective cover plate.

[0014] Preferably, the fixing bolt passes through the protective cover plate and extends to the inside of the threaded hole to be threadedly connected to the threaded hole, and the protective cover plate is movably connected to the fixing ring.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the adjustable multifunctional tubing backup tong not only can adjust the clamping inner diameter and automatically complete the clamping, but also can conveniently inspect and repair the inside;

[0016] (1) The arc-shaped bin, the inner hexagonal hoop, the movable clamp, the jaws, the fixed plate, the movable through slot, the empty slot and the spring are provided. When in use, the inner hexagonal hoop is rotated to drive the four groups of movable clamps inside it to contract. When the movable clamps contract, the jaws are driven to move, so that the jaws are attached to the outside of the oil pipe for clamping. The fixed plate inside the movable through slot can push the movable clamp out through the spring, so that the movable clamp is tightly attached to the inside of the inner hexagonal hoop. The fixed plate cooperates with the movable through slot to limit the movable clamp to prevent the movable clamp from shaking, so that the clamping inner diameter of the device can be adjusted according to the diameter of the oil pipe.

[0017] (2) By providing an arc-shaped bin, an inner hexagonal hoop, a cylinder, a cavity, a transmission gear, a movable strip, a slot, a fixed block, a limit slot and a second tooth block, the outer shell is sleeved on the outside of the oil pipe during clamping, and then the cylinder is started to drive the movable strip to descend. While the movable strip descends, the transmission gear is driven to rotate through the first tooth block. When the transmission gear rotates, the inner hexagonal hoop is driven to rotate through the second tooth block, so that the movable splint is driven to move through the inner hexagonal hoop to automatically complete the clamping, and the movable strip is fitted inside the slot to prevent the movable strip from shaking, so that the movable splint can be automatically driven to complete the clamping;

[0018] (3) By providing threaded holes, fixing bolts, a protective cover plate and a fixing ring, after long-term use, after rotating multiple sets of fixing bolts respectively to disengage them from the inside of the threaded holes, the protective cover plate can be removed from one end of the shell, thereby facilitating the inspection and replacement of components inside the shell. After completion, the protective cover plate is reset and attached to one end of the shell, and then the fixing bolts are passed through the protective cover plate and turned into the inside of the threaded holes to position the protective cover plate through the fixing bolts. The fixing ring at one end of the shell fits on the outside of the protective cover plate to position the protective cover plate, thereby facilitating the inspection and replacement of internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0020] Figure 2 This is a front view structural schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a front view structural schematic diagram of the inner hexagonal hoop of the utility model.

[0023] In the figure: 1. outer shell; 2. arc-shaped bin; 3. hexagonal inner hoop; 4. cylinder; 5. groove; 6. cavity; 7. transmission gear; 8. movable strip; 9. first tooth block; 10. slot; 11. fixed block; 12. limit slot; 13. movable splint; 14. threaded hole; 15. fixing bolt; 16. protective cover; 17. fixing ring; 18. clamp teeth; 19. fixing plate; 20. movable through slot; 21. empty slot; 22. spring; 23. second tooth block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4An adjustable multifunctional tubing backup tong includes a housing 1, a cavity 6 is provided on one side of the housing 1, the center line of the cavity 6 is on the same horizontal plane as the center line of the housing 1, an arc-shaped bin 2 is provided inside the housing 1, the center line of the arc-shaped bin 2 is on the same horizontal plane as the center line of the housing 1, and an adjustment structure for adjusting the clamping inner diameter is provided inside the arc-shaped bin 2;

[0026] The adjustment structure includes an inner hexagonal hoop 3, the inner hexagonal hoop 3 is movably connected inside the arc-shaped bin 2, four groups of movable through grooves 20 are provided inside the arc-shaped bin 2, the movable through grooves 20 are movably connected to the movable splint 13, one end of the movable splint 13 is provided with an empty groove 21, the inner part of the movable through groove 20 is fixedly connected to the fixed plate 19, one end of the fixed plate 19 is fixedly connected to the spring 22, and one end of the movable splint 13 is fixedly connected to the clamp teeth 18;

[0027] The spring 22 is fixedly connected to the empty slot 21, and the fixed plate 19 is slidably connected to the empty slot 21;

[0028] The movable through grooves 20 provided inside the arc-shaped bin 2 are arranged at equal intervals, and the inner hexagonal hoop 3 is movably connected to the movable splint 13;

[0029] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, when in use, the inner hexagonal hoop 3 is rotated to drive the four groups of movable clamps 13 inside it to contract. The movable clamps 13 contract and drive the jaws 18 to move, so that the jaws 18 fit against the outside of the oil pipe for clamping, and the fixed plate 19 inside the movable through groove 20 can push the movable clamp 13 out through the spring 22, so that the movable clamp 13 fits tightly against the inside of the inner hexagonal hoop 3, and the fixed plate 19 cooperates with the movable through groove 20 to limit the movable clamp 13 to prevent the movable clamp 13 from shaking, thereby realizing that the clamping inner diameter of the device can be adjusted according to the diameter of the oil pipe.

[0030] Embodiment 2: Two groups of limiting grooves 12 are provided at one end of the inner hexagonal hoop 3, fixed blocks 11 are fixedly connected at both ends of the arc-shaped bin 2, a second tooth block 23 is fixedly connected to one side of the inner hexagonal hoop 3, a transmission gear 7 is movably connected to the inside of the cavity 6, a groove 5 is provided at one side of the top of the housing 1, a cylinder 4 is fixedly connected to the inside of the groove 5, an output end of the cylinder 4 extends to the inside of the cavity 6 and is fixedly connected to a movable strip plate 8, a first tooth block 9 is fixedly connected to one side of the movable strip plate 8, and a slot 10 is provided at the bottom end of the cavity 6;

[0031] The first tooth block 9 is meshed and connected with the transmission gear 7, and the second tooth block 23 is meshed and connected with the transmission gear 7;

[0032] The movable strip 8 is movably connected to the slot 10, and the fixed block 11 is slidably connected to the limit slot 12;

[0033] Specifically, Figure 1 and Figure 4 As shown, during clamping, the housing 1 is sleeved on the outside of the oil pipe, and then the cylinder 4 is started to drive the movable strip 8 to descend. While the movable strip 8 descends, the transmission gear 7 is driven to rotate through the first tooth block 9. When the transmission gear 7 rotates, the inner hexagonal hoop 3 is driven to rotate through the second tooth block 23, thereby driving the movable splint 13 to move through the inner hexagonal hoop 3 to automatically complete the clamping, and the movable strip 8 fits inside the slot 10 to prevent the movable strip 8 from shaking, thereby achieving the automatic driving of the movable splint 13 to complete the clamping.

[0034] Embodiment 3: A threaded hole 14 is formed at one end of the housing 1, a fixing ring 17 is fixedly connected to one end of the housing 1, a protective cover plate 16 is movably connected to one end of the housing 1, and a fixing bolt 15 is movably connected to one end of the protective cover plate 16;

[0035] The fixing bolt 15 penetrates the protective cover plate 16 and extends to the inside of the threaded hole 14 and is threadedly connected to the threaded hole 14. The protective cover plate 16 is movably connected to the fixing ring 17.

[0036] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, after long-term use, multiple groups of fixing bolts 15 are rotated separately to disengage them from the inside of the threaded hole 14, and the protective cover 16 can be removed from one end of the shell 1, so as to facilitate the inspection and replacement of the components inside the shell 1. After completion, the protective cover 16 is reset and fitted to one end of the shell 1, and then the fixing bolts 15 are passed through the protective cover 16 and turned into the inside of the threaded hole 14 to position the protective cover 16 through the fixing bolts 15. The fixing ring 17 at one end of the shell 1 is fitted to the outside of the protective cover 16 to position the protective cover 16, so that the internal components can be easily inspected and repaired.

[0037] Working principle: When the utility model is in use, the shell 1 is sleeved on the outside of the oil pipe, and then the cylinder 4 is started to drive the movable strip 8 to descend. When the movable strip 8 descends, the transmission gear 7 is driven to rotate through the first tooth block 9. When the transmission gear 7 rotates, the inner hexagonal hoop 3 is driven to rotate through the second tooth block 23, so that the movable splint 13 is driven to move through the inner hexagonal hoop 3 to automatically complete the clamping, and the movable strip 8 is fitted inside the slot 10 to prevent the movable strip 8 from shaking, and the inner hexagonal hoop 3 is rotated to drive the four groups of movable splints 13 inside it to shrink. When the movable splint 13 shrinks, it drives the jaws 18 to move, so that the jaws 18 are fitted to the outside of the oil pipe for clamping, and the fixed plate 19 inside the movable through slot 20 can be clamped by the spring 22. The movable splint 13 is pushed out so that it is tightly attached to the inside of the hexagonal sleeve 3. The fixed plate 19 cooperates with the movable through groove 20 to limit the movable splint 13 and prevent it from shaking. After a long period of use, multiple sets of fixing bolts 15 are rotated respectively to disengage them from the inside of the threaded hole 14, and the protective cover 16 can be removed from one end of the outer shell 1, so as to facilitate the inspection and replacement of the components inside the outer shell 1. After completion, the protective cover 16 is reset and attached to one end of the outer shell 1, and then the fixing bolts 15 are passed through the protective cover 16 and then turned into the inside of the threaded hole 14 to position the protective cover 16 through the fixing bolts 15. The fixing ring 17 at one end of the outer shell 1 is attached to the outside of the protective cover 16 to position the protective cover 16.

Claims

1. An adjustable multifunctional tubing backup tong, comprising a housing (1), characterized in that: A cavity (6) is provided on one side of the interior of the shell (1), the center line of the cavity (6) and the center line of the shell (1) are on the same horizontal plane, an arc-shaped bin (2) is provided inside the shell (1), the center line of the arc-shaped bin (2) and the center line of the shell (1) are on the same horizontal plane, and an adjustment structure for adjusting the clamping inner diameter is provided inside the arc-shaped bin (2); The adjustment structure comprises an inner hexagonal hoop (3), the inner hexagonal hoop (3) is movably connected to the interior of the arc-shaped bin (2), four groups of movable through grooves (20) are provided inside the arc-shaped bin (2), the inner parts of the movable through grooves (20) are movably connected to a movable splint (13), one end of the movable splint (13) is provided with an empty groove (21), the inner parts of the movable through grooves (20) are fixedly connected to a fixed plate (19), one end of the fixed plate (19) is fixedly connected to a spring (22), and one end of the movable splint (13) is fixedly connected to a clamp tooth (18).

2. The adjustable multifunctional tubing backup tong according to claim 1, characterized in that: The spring (22) is fixedly connected to the empty slot (21), and the fixing plate (19) is slidably connected to the empty slot (21).

3. The adjustable multifunctional tubing backup tong according to claim 1, characterized in that: The movable through grooves (20) provided inside the arc-shaped bin (2) are arranged at equal intervals, and the inner hexagonal hoop (3) is movably connected to the movable clamping plate (13).

4. The adjustable multifunctional tubing backup tong according to claim 1, characterized in that: One end of the inner hexagonal hoop (3) is provided with two groups of limit grooves (12); the two ends of the arc-shaped bin (2) are fixedly connected with fixed blocks (11); one side of the inner hexagonal hoop (3) is fixedly connected with a second tooth block (23); the interior of the cavity (6) is movably connected with a transmission gear (7); a groove (5) is provided on one side of the top of the housing (1); the interior of the groove (5) is fixedly connected with a cylinder (4); the output end of the cylinder (4) extends to the interior of the cavity (6) and is fixedly connected with a movable strip plate (8); one side of the movable strip plate (8) is fixedly connected with a first tooth block (9); and a slot (10) is provided at the bottom end of the interior of the cavity (6).

5. The adjustable multifunctional tubing backup tong according to claim 4, characterized in that: The first tooth block (9) is meshingly connected to the transmission gear (7), and the second tooth block (23) is meshingly connected to the transmission gear (7).

6. The adjustable multifunctional tubing backup tong according to claim 4, characterized in that: The movable strip plate (8) is movably connected to the slot (10), and the fixed block (11) is slidably connected to the limiting groove (12).

7. The adjustable multifunctional tubing backup tong according to claim 1, characterized in that: A threaded hole (14) is provided at one end of the shell (1); a fixing ring (17) is fixedly connected to one end of the shell (1); a protective cover plate (16) is movably connected to one end of the shell (1); and a fixing bolt (15) is movably connected to one end of the protective cover plate (16).

8. The adjustable multifunctional tubing backup tong according to claim 7, characterized in that: The fixing bolt (15) penetrates the protective cover plate (16) and extends to the inside of the threaded hole (14) to be threadedly connected to the threaded hole (14); the protective cover plate (16) is movably connected to the fixing ring (17).

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