A hydraulic casing power tong for oil energy development

Abstract

The present invention relates to the technical field of power tongs. The present invention discloses a hydraulic casing power tong for oil energy development, comprising a tong head and an oil cylinder. The oil cylinder is fixedly mounted on the tong head. The tong head is open-ended away from the oil cylinder end. A mold is mounted in the tong head from the open end. A turning groove is provided at the bottom of the open end. A locking groove is provided at the top of the open end. The bottom end of the locking block is mounted in the turning groove via a lower turning assembly. A locking screw is mounted on the top end of the locking block. When the locking block turns upward, the locking screw slides into the locking groove. A locking nut is mounted on the locking screw, and the locking block is pressed against the mold. The hydraulic casing power tong for oil energy development disclosed by the present invention does not require a direct insertion compared to a latch. The locking block can be assembled and disassembled by simply flipping. Moreover, because the locking groove and the turning groove are both connected to the open end, such a slotted arrangement leaves no space for sand to hide therein and thus cannot be blocked therein. Thus, the fixing is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of power tongs, in particular to a hydraulic casing power tong for oil energy development. Background Art

[0002] Chinese patent document CN214997527U discloses a hydraulic casing power tong for oil energy mining, comprising a tong head, a mold, a cylinder, and a handle. Limiting holes are provided on both sides of the bottom end of the tong head, and the mold is movably connected to the inside of the tong head. A latch is movably connected to one side of the tong head, and a pull head is fixedly connected to the top of the latch. A cylinder is fixedly connected to one side of the tong head, and a pressure rod is movably connected to the top of the cylinder. A sleeve rod is movably connected to one side of the cylinder, and a hollow block is fixedly connected to one side of the top of the sleeve rod. The hydraulic casing power tong uses a sleeve rod provided on the outside of the connecting rod, which can slide outside the connecting rod, thereby adjusting the overall length between the connecting rod and the sleeve rod. At this time, a limit bolt can be rotated inside the fixing nut, and the limit bolt can move inside the fixing nut and be inserted into the socket at this position, thereby fixing the position of the sleeve rod. The use length of the handle can be adjusted as needed. The mold in the hydraulic casing power tongs is fixed to the tongs head by a pin. The purpose of setting the pin is to achieve the fixation and unlocking of the mold. However, in actual use, the insertion and removal of the pin need to be vertically facing. In addition, due to the influence of dust and sediment in the mining area, if sand particles block the limit hole, it will not only be difficult to remove, but if the spring cannot drive the limit head to reset in time, it will also cause the pin to be fixed unstable. Summary of the Invention

[0003] To achieve the above-mentioned purpose, the present invention discloses a hydraulic casing power tongs for petroleum energy mining, comprising a tongs head and an oil cylinder, wherein the oil cylinder is fixedly mounted on the tongs head, the tongs head is arranged in an open type away from the oil cylinder end, the mold is installed in the tongs head from the opening, a turning groove is provided at the bottom of the opening, a locking groove is provided at the top of the opening, the bottom end of the locking block is installed in the turning groove through a lower turning assembly, a locking screw is installed at the top of the locking block, when the locking block is turned up, the locking screw slides into the locking groove, the locking nut is installed on the locking screw, and the locking block is set against the mold.

[0004] Preferably, the connecting rod is installed on the end of the oil cylinder away from the clamp head, and the pressure rod is movably connected to the oil cylinder and arranged close to the connecting rod.

[0005] Preferably, the bottom and top of the opening are also provided with limiting slide grooves to facilitate the sliding of the mold, the width of the flip groove is larger than the limiting slide groove, the limiting slide groove is set to avoid the flip groove, the width of the locking groove is smaller than the limiting slide groove, and the locking groove is connected to the limiting slide groove.

[0006] Preferably, the downward flip assembly includes:

[0007] The left guide chute and the right guide chute are oppositely opened on the inner wall of the flip groove, the right guide chute is connected to the side end of the clamp head, and when the locking block is flipped up to the horizontal state, it is blocked on the left guide chute and the right guide chute;

[0008] A guide slider is slidably connected to the left guide slot, and the guide slider is fixedly connected to the locking block;

[0009] The cylindrical shell is slidably connected to the right guide slot, and the cylindrical shell is fixedly connected to the locking block. Four retractable blocks are distributed in a circular array on the side end of the cylindrical shell. When the four blocks are extended, they are synchronously pressed against the inner wall of the right guide slot to limit the rotation of the cylindrical shell.

[0010] Preferably, the central fixed shaft extends into the cylindrical shell away from the locking block end and is connected to the side fixed seat. The side fixed seat is fixedly mounted on the inner wall of the cylindrical shell. Four side slide groove circular arrays are distributed on the central fixed shaft. The side sliders are slidably connected in the side slide grooves. One end of the flip rod is rotatably mounted on the side slider, and the other end of the flip rod is rotatably mounted on the clamping block. The inner screw sleeve is sleeved on the central fixed shaft. The inner screw sleeve is connected to each side slider through a side mounting frame. The side mounting frame is sleeved on the central fixed shaft. The outer screw sleeve is threaded onto the inner screw sleeve. The outer screw sleeve is sleeved on the central fixed shaft away from the inner screw sleeve end and extends out of the side end of the pliers head.

[0011] Preferably, an auxiliary rotating rod is installed on the end of the outer screw sleeve away from the inner screw sleeve, and an auxiliary rotating block is installed on the end of the central fixed shaft away from the side fixed seat.

[0012] Preferably, a return spring 1 is connected between the side fixing seat and the clamping block.

[0013] Preferably, the outer screw sleeve is provided with a second return spring near the end sleeve of the inner screw sleeve, one end of the second return spring is connected to the side mounting frame, and the other end of the second return spring is against the outer limit ring, which is integrally formed on the outer screw sleeve.

[0014] Preferably, the end of the central fixed shaft away from the side fixed seat is integrally formed with an outer limiting ring 2, and the end of the outer screw sleeve away from the inner screw sleeve is abutted against the outer limiting ring 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1The structure of the present invention is schematically shown Figure 1 ;

[0017] Figure 2 The open position of the pliers head of the present invention is cut away Figure 1 ;

[0018] Figure 3 This is a front cross-sectional view of the downward flip assembly of the present invention Figure 1 (When the card block is extended);

[0019] Figure 4 This is a side view of the downward flip assembly of the present invention Figure 1 (When the card block is extended);

[0020] Figure 5 This is a front cross-sectional view of the downward flip assembly of the present invention Figure 2 (When the card block is in the retracted state);

[0021] Figure 6 This is a side view of the downward flip assembly of the present invention Figure 2 (When the card block is in the retracted state);

[0022] Figure 7 This is a schematic diagram of the locking block of the present invention sliding away from the mold;

[0023] Figure 8 This is a schematic diagram of the locking block of the present invention in a downwardly flipped state;

[0024] Figure 9 The open position of the pliers head of the present invention is cut away Figure 2 .

[0025] In the figure: 10. Clamp head; 11. Cylinder; 12. Mold; 13. Opening; 14. Flip groove; 15. Locking groove; 16. Locking block; 17. Lower flip assembly; 18. Locking screw; 19. Locking nut; 20. Connecting rod; 21. Pressure rod; 22. Left guide chute; 23. Right guide chute; 24. Guide slide; 25. Cylindrical shell; 26. Block; 27. Center fixed shaft; 28. Side chute; 29. ​​Side slide; 30. Flip rod; 31. Side fixing seat; 32. Inner screw sleeve; 33. Side mounting bracket; 34. Outer screw sleeve; 35. Auxiliary rotating rod; 36. Auxiliary rotating block; 37. Return spring 1; 38. Return spring 2; 39. Outer limit ring 1; 40. Outer limit ring 2. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] Example

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figures 1 to 9 As shown, the present embodiment provides a hydraulic casing power tong for oil energy mining, comprising a tongs head 10 and a cylinder 11. The cylinder 11 is fixedly mounted on the tongs head 10, and the tongs head 10 is open at the end away from the cylinder 11. The mold 12 is mounted in the tongs head 10 from the opening 13. A turning groove 14 is provided at the bottom of the opening 13, and a locking groove 15 is provided at the top of the opening 13. The bottom end of the locking block 16 is mounted in the turning groove 14 through a lower turning assembly 17. A locking screw 18 is mounted on the top of the locking block 16. When the locking block 16 is turned up, the locking screw 18 slides into the locking groove 15. The locking nut 19 is mounted on the locking screw 18, and the locking block 16 is pressed against the mold 12.

[0030] The working principle and beneficial effects of the above technical solution are:

[0031] The present invention provides a hydraulic casing power tong for oil energy mining. When the mold 12 needs to be replaced, after the locking nut 19 is loosened, the locking screw 18 is released from the locking groove 15, and the locking block 16 is pulled. The locking block 16 is flipped in the direction away from the oil cylinder 11 with the lower flip component 17 as the center, and the opening 13 is opened. After the mold 12 is replaced from the opening 13, the locking block 16 is pulled in the opposite direction. The locking block 16 is flipped in the direction close to the oil cylinder 11 with the lower flip component 17 as the center, and the locking screw 18 slides into the locking groove 15. The locking block 16 is placed on the mold 12, and then the locking nut 19 is tightened on the locking screw 18. The present invention discloses a hydraulic casing power tong for oil energy mining. Compared with a pin, it does not need to be inserted directly, and the locking block 16 can be disassembled and assembled by simply flipping it. Moreover, because the locking groove 15 and the flipping groove 14 are both connected to the opening 13, such a slotted arrangement leaves no space for sand to hide therein, and thus cannot be blocked therein, so that it is firmly fixed.

[0032] In this embodiment, the connecting rod 20 is installed at the end of the oil cylinder 11 away from the clamp head 10 , and the pressure rod 21 is movably connected to the oil cylinder 11 and is arranged close to the connecting rod 20 .

[0033] The working principle and beneficial effects of the above technical solution are:

[0034] The connecting rod 20 is used to fix the oil cylinder 11 and the pliers head 10 connected to the oil cylinder 11 , while the pressure rod 21 is used for the operation of the oil cylinder 11 .

[0035] In this embodiment, the bottom and top of the opening 13 are also provided with limiting slide grooves to facilitate the sliding of the mold 12. The width of the flip groove 14 is greater than that of the limiting slide groove, and the limiting slide groove is set to avoid the flip groove 14. The width of the locking groove 15 is smaller than that of the limiting slide groove, and the locking groove 15 is connected to the limiting slide groove.

[0036] The working principle and beneficial effects of the above technical solution are:

[0037] The width of the flip groove 14 is greater than the limiting slide groove, so as to facilitate the flipping of the bottom end of the locking block 16, and the width of the locking groove 15 is smaller than the limiting slide groove, so as to facilitate the locking screw 18 to slide into the locking groove 15. The setting of the opening 13 makes the pliers head 10 semi-open, and thus the flip groove 14 and the locking groove 15 connected to the opening 13 are both semi-open. In this way, there is no hiding space for sand particles in the flip groove 14 and the locking groove 15, and thus they cannot be blocked in the flip groove 14 and the locking groove 15.

[0038] In this embodiment, the lower flip assembly 17 includes:

[0039] The left guide chute 22 and the right guide chute 23 are oppositely opened on the inner wall of the flip groove 14, and the right guide chute 23 is connected to the side end of the clamp head 10. When the locking block 16 is flipped up to the horizontal state, it is blocked on the left guide chute 22 and the right guide chute 23;

[0040] The guide slider 24 is slidably connected to the left guide slot 22 and is fixedly connected to the locking block 16;

[0041] The cylindrical shell 25 is slidably connected to the right guide slot 23. The cylindrical shell 25 is fixedly connected to the locking block 16. Four retractable blocks 26 are distributed in a circular array on the side end of the cylindrical shell 25. When the four blocks 26 are extended, they are synchronously pressed against the inner wall of the right guide slot 23 to limit the rotation of the cylindrical shell 25.

[0042] The working principle and beneficial effects of the above technical solution are:

[0043] The left guide slot 22 and the right guide slot 23 are oppositely opened on the inner wall of the flip slot 14, and the slotting directions of the left guide slot 22 and the right guide slot 23 are parallel to the moving direction of the mold 12 in the clamp head 10. When the mold 12 needs to be replaced, after loosening the locking nut 19, the locking screw 18 is released from the locking slot 15, and the locking block 16 is pulled to slide in the direction away from the mold 12. The locking screw 18 at the top of the locking block 16 slides in the locking slot 15, and the guide slider 24 and the cylindrical shell 25 at the bottom end of the locking block 16 slide in the left guide slot 22 and the right guide slot 23 respectively. At this time, the four blocking blocks 26 are in an extended state and are synchronously against the inner wall of the right guide slot 23, so that the cylindrical shell 25 can be easily opened. When the cylindrical shell 25 slides in the right guide slot 23, it cannot rotate by itself and pulls the locking block 16. The locking block 16 can only slide in a vertical state, which facilitates the locking screw 18 to slide out of the locking slot 15. Then, after the four blocks 26 shrink, the cylindrical shell 25 can rotate by itself in the right guide slot 23. After the locking block 16 is flipped 90° in the direction away from the oil cylinder 11 with the cylindrical shell 25 and the guide slider 24 as the center, the four blocks 26 resume the extended state, the opening 13 opens, and then the locking block 16 is pushed to slide in the flip groove 14 in the direction close to the oil cylinder 11, and is covered on the left guide slot 22 and the right guide slot 23. In this way, when the mold 12 is installed, sand can be prevented from falling into the left guide slot 22 and the right guide slot 23 as much as possible. After the mold 12 is installed in the pliers head 10 from the opening 13 along the limiting slide groove, the locking block 16 is pulled to slide in the flip groove 14 in the direction away from the cylinder 11, the four blocks 26 contract, and the locking block 16 is flipped up. After the locking block 16 is flipped 90° in the direction close to the cylinder 11 with the cylindrical shell 25 and the guide slider 24 as the center, the locking screw 18 slides into the locking groove 15, and the four blocks 26 return to the extended state, pushing the locking block 16, so that the locking block 16 is against the mold 12, and the locking nut 19 is re-locked on the locking screw 18, and the locking screw 18 is fastened to the locking groove 15.

[0044] When working in a narrow space or climbing, the locking block 16 is flipped 180° away from the cylinder 11 with the cylindrical shell 25 and the guide slider 24 as the center, and the four clamping blocks 26 are restored to the extended state. After the original mold is taken out from the opening 13, the locking block 16 is lifted to expose the flip groove 14. In this way, the new mold can be installed from the end of the pliers 10 close to the flip groove 14, so that the pliers 10 has two adjacent installation ports, the opening 13 and the flip groove 14, and there is no need to adjust the opening 13 to a position close to the operator, so that the pliers 10 can complete the installation of the mold 12 more adaptably.

[0045] In this embodiment, the central fixed shaft 27 extends into the cylindrical shell 25 away from the locking block 16 end and is connected to the side fixed seat 31. The side fixed seat 31 is fixedly mounted on the inner wall of the cylindrical shell 25. Four side slide grooves 28 are distributed in a circular array on the central fixed shaft 27. The side slider 29 is slidably connected to the side slide groove 28. One end of the flip rod 30 is rotatably mounted on the side slider 29, and the other end of the flip rod 30 is rotatably mounted on the block 26. The inner screw sleeve 32 is sleeved on the central fixed shaft 27. The inner screw sleeve 32 is connected to each side slider 29 through a side mounting frame 33. The side mounting frame 33 is sleeved on the central fixed shaft 27. The outer screw sleeve 34 is screwed on the inner screw sleeve 32. The outer screw sleeve 34 is sleeved on the central fixed shaft 27 away from the end of the inner screw sleeve 32 and extends out of the side end of the pliers head 10.

[0046] The working principle and beneficial effects of the above technical solution are:

[0047] When the outer screw sleeve 34 is rotated and the outer screw sleeve 34 rotates on the central fixed shaft 27, the inner screw sleeve 32 engaged with the outer screw sleeve 34 slides along the central fixed shaft 27. The inner screw sleeve 32 drives the side slide block 29 to slide in the side slide groove 28 in the direction away from the side fixed seat 31 through the side mounting bracket 33. After the four side slide blocks 29 slide synchronously, the flip rod 30 connected thereto and the block 26 installed on the flip rod 30 away from the end of the side slide block 29 move. After the four blocks 26 shrink on the cylindrical shell 25, the four blocks 26 are released from the inner wall of the right guide slot 23. At this time, the cylindrical shell 25 can rotate freely in the right guide slot 23, thereby making the locking block 16 connected to the cylindrical shell 25 can rotate freely in the flip slot 14. When the four blocks 26 return to the inner wall of the right guide slot 23, the cylindrical shell 25 can only slide in the right guide slot 23 again.

[0048] Furthermore, the guide slider 24 is a round block structure and can slide and rotate freely in the left guide slot 22 .

[0049] In this embodiment, an auxiliary rotating rod 35 is installed at the end of the outer screw sleeve 34 away from the inner screw sleeve 32 , and an auxiliary rotating block 36 is installed at the end of the central fixed shaft 27 away from the side fixing seat 31 .

[0050] The beneficial effects of the above technical solution are:

[0051] The function of the auxiliary rotating rod 35 is to facilitate the rotation of the outer screw sleeve 34, thereby facilitating the telescopic action of the four clamping blocks 26, and the function of the auxiliary rotating block 36 is to facilitate the rotation of the central fixed shaft 27, thereby facilitating the rotation of the cylindrical shell 25 connected to the central fixed shaft 27 through the side fixing seat 31 and the locking block 16 connected to the cylindrical shell 25.

[0052] In this embodiment, a return spring 37 is connected between the side fixing seat 31 and the clamping block 26 .

[0053] The working principle and beneficial effects of the above technical solution are:

[0054] In the initial state of the return spring 1 37 , the block 26 is in a contracted state, and when the return spring 1 37 is stretched, the block 26 is in an extended state. When the return spring 1 37 returns to the initial state, it is beneficial to the contraction of the block 26 .

[0055] In this embodiment, a return spring 2 38 is provided near the end of the inner screw sleeve 32 of the outer screw sleeve 34. One end of the return spring 2 38 is connected to the side mounting frame 33, and the other end of the return spring 2 38 is resting on an outer limit ring 1 39. The outer limit ring 1 39 is integrally formed on the outer screw sleeve 34.

[0056] The working principle and beneficial effects of the above technical solution are:

[0057] In the initial state of the return spring 2 38 , the block 26 is in an extended state, and when the return spring 1 37 is stretched, the block 26 is in a contracted state. When the return spring 2 38 returns to its initial state, it is beneficial to the extension of the block 26 . The elastic force of the return spring 2 38 is greater than that of the return spring 1 37 .

[0058] In this embodiment, the end of the central fixed shaft 27 away from the side fixing seat 31 is integrally formed with a second outer limiting ring 40 , and the end of the outer screw sleeve 34 away from the inner screw sleeve 32 is abutted against the second outer limiting ring 40 .

[0059] The working principle and beneficial effects of the above technical solution are:

[0060] The provision of the second outer limiting ring 40 facilitates the limiting of the outer screw sleeve 34 on the central fixed shaft 27 .

[0061] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A hydraulic casing power tong for oil energy mining, comprising a tong head (10) and a cylinder (11), wherein the cylinder (11) is fixedly mounted on the tong head (10), the tong head (10) is open at the end away from the cylinder (11), and a mold (12) is mounted in the tong head (10) from the open end (13), characterized in that: The bottom of the opening (13) is provided with a turning groove (14), the top of the opening (13) is provided with a locking groove (15), the bottom end of the locking block (16) is installed in the turning groove (14) through the lower turning assembly (17), the top end of the locking block (16) is installed with a locking screw (18), when the locking block (16) turns up, the locking screw (18) slides into the locking groove (15), the locking nut (19) is installed on the locking screw (18), and the locking block (16) is against the mold (12); the lower turning assembly (17) includes: a left guide groove (22) and a right guide groove (23) on the inner wall of the turning groove (14) opposite to each other, and the right guide groove (23) ) is connected to the side end of the pliers head (10), and when the locking block (16) is turned up to a horizontal state, it is covered on the left guide slot (22) and the right guide slot (23); the guide slider (24) is slidably connected to the left guide slot (22), and the guide slider (24) is fixedly connected to the locking block (16); the cylindrical shell (25) is slidably connected to the right guide slot (23), and the cylindrical shell (25) is fixedly connected to the locking block (16), and four retractable blocks (26) are distributed in a circular array on the side end of the cylindrical shell (25). When the four blocks (26) are extended, they are synchronously pressed against the inner wall of the right guide slot (23) to limit the rotation of the cylindrical shell (25).

2. The hydraulic casing power tongs for oil energy extraction according to claim 1, characterized in that: The connecting rod (20) is installed on the end of the oil cylinder (11) away from the clamp head (10), and the pressure rod (21) is movably connected to the oil cylinder (11) and is arranged close to the connecting rod (20).

3. The hydraulic casing power tongs for oil energy extraction according to claim 1, characterized in that: The bottom and top of the opening (13) are also provided with limiting slide grooves for facilitating the sliding of the mold (12). The width of the turnover groove (14) is greater than the limiting slide groove, and the limiting slide groove is arranged to avoid the turnover groove (14). The width of the locking groove (15) is less than the limiting slide groove, and the locking groove (15) is connected to the limiting slide groove.

4. The hydraulic casing power tongs for oil energy extraction according to claim 1, characterized in that: The central fixed shaft (27) extends from the end of the cylindrical shell (25) away from the locking block (16) into the cylindrical shell and is connected to the side fixed seat (31). The side fixed seat (31) is fixedly installed on the inner wall of the cylindrical shell (25). Four side sliding grooves (28) are distributed in a circular array on the central fixed shaft (27). The side slider (29) is slidably connected in the side sliding groove (28). One end of the flip rod (30) is rotatably installed on the side slider (29). The other end of the flip rod (30) is rotatably installed on the side slider (29). One end is rotatably mounted on the clamping block (26); the inner screw sleeve (32) is sleeved on the central fixed shaft (27); the inner screw sleeve (32) is connected to each side slide block (29) through a side mounting frame (33); the side mounting frame (33) is sleeved on the central fixed shaft (27); the outer screw sleeve (34) is screwed on the inner screw sleeve (32); the outer screw sleeve (34) is sleeved on the central fixed shaft (27) away from the end of the inner screw sleeve (32) and extends out of the side end of the pliers head (10).

5. The hydraulic casing power tongs for oil energy extraction according to claim 4, characterized in that: An auxiliary rotating rod (35) is installed on the end of the outer screw sleeve (34) away from the inner screw sleeve (32), and an auxiliary rotating block (36) is installed on the end of the central fixed shaft (27) away from the side fixed seat (31).

6. The hydraulic casing power tongs for oil energy development according to claim 4, characterized in that: A return spring 1 (37) is connected between the side fixing seat (31) and the clamping block (26).

7. The hydraulic casing power tongs for oil energy extraction according to claim 4, characterized in that: The outer screw sleeve (34) is provided with a second return spring (38) near the end of the inner screw sleeve (32), one end of the second return spring (38) is connected to the side mounting frame (33), and the other end of the second return spring (38) is abutted against an outer limiting ring (39), and the outer limiting ring (39) is integrally formed on the outer screw sleeve (34).

8. The hydraulic casing power tongs for oil energy extraction according to claim 4, characterized in that: The end of the central fixed shaft (27) away from the side fixed seat (31) is integrally formed with an outer limiting ring 2 (40), and the end of the outer screw sleeve (34) away from the inner screw sleeve (32) is abutted against the outer limiting ring 2 (40).

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