Anti-slip drill rod power tongs for screwing and unscrewing

Abstract

The invention belongs to the technical field of drill rod screwing and dismounting, and particularly relates to screwing and dismounting anti-slip drill rod power tongs which comprise a shell, a hydraulic motor is arranged in the shell, the hydraulic motor drives a rotary clamping component to rotate, clamps a drill rod and drives the drill rod to rotate, and the rotary clamping component is rotationally connected into the shell. An inlet of the shell is sealed by a sealing part rotationally connected with the outer side of the rotary clamping part, a fastening part is arranged on the rotary clamping part, the drill rod is fed into the rotary clamping part from the inlet of the shell by moving the screwing and unscrewing anti-slipping type drill rod power tongs, the drill rod is clamped through rotation of the rotary clamping part, and the screwing and unscrewing anti-slipping type drill rod power tongs are used for screwing and unscrewing. However, due to the fact that the rotary clamping component cannot clamp the drill rod on one side of the inlet of the shell, the fastening component can be moved to the inlet of the shell, the drill rod is further clamped through the fastening component, the clamping force on the drill rod is enhanced, and the situation that the drill rod slips in the screwing and unscrewing process is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of drill rod unscrewing and disassembling, and in particular relates to an unscrewing and disassembling anti-slipping drill rod power tong. Background Art

[0002] Existing power drill tongs cannot be equipped with a drill rod clamp at their opening, resulting in weak holding force on the drill rod or uneven distribution of clamping force, and the risk of the drill rod slipping during rotation;

[0003] For example, patent application number CN202322219846.1 discloses a drill pipe power tong, comprising: a mounting frame, a movable roller, a plurality of drill pipe clamps, and a drive wheel. The drive wheel is rotatably mounted on the mounting frame, the movable roller is rotatably mounted in the drive wheel, and a plurality of drill pipe clamps for clamping are mounted in the movable roller. Through the cooperation of the mounting frame, the movable roller, the plurality of drill pipe clamps, and the drive wheel, the power tong increases the contact area when clamping the drill pipe by the plurality of drill pipe clamps, thereby making it more stable when clamping the drill pipe. When the first protrusion extrusion groove and the second protrusion extrusion groove respectively abut and support the first protrusion and the second protrusion provided on the drill pipe clamp, the drive wheel can provide continuous extrusion and clamping force for the drill pipe clamp when rotating. However, a disadvantage of this technical solution is that the drill pipe clamp cannot be provided at the opening of the drill pipe power tong, resulting in a weak holding force on the drill pipe or an uneven distribution of the clamping force, and there is a risk of the drill pipe slipping during rotation. Summary of the Invention

[0004] The purpose of the present invention is to provide a screw-off anti-slip drill pipe power tong to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A twist-off and anti-slip drill rod power tong includes a housing with a hydraulic motor provided inside the housing. The hydraulic motor drives a rotary clamping component to rotate, clamps the drill rod and drives the drill rod to rotate. The rotary clamping component is rotatably connected to the housing. A closing component rotatably connected to the outside of the rotary clamping component closes the entrance of the housing. A fastening component is provided on the rotary clamping component, which further clamps the drill rod.

[0006] Furthermore, the rotating clamping component includes two annular fixing plates, which are rotatably connected to the upper and lower ends of the shell respectively. A plurality of fixing columns are fixed between the two annular fixing plates, and the fixing columns are rotatably connected to one end of the clamping plate. A triangular protrusion is provided on the back of the clamping plate. A rotating ring frame is rotatably connected between the two annular fixing plates, and an inclined groove is provided in the rotating ring frame, and the triangular protrusion is located in the inclined groove.

[0007] Furthermore, the rotating ring frame is gear-connected to the two transmission gears 1, the two transmission gears 1 are respectively gear-connected to the two transmission gears 2, the two transmission gears 2 are both gear-connected to the transmission gear 3, the transmission gear 3 is connected to the output end of the hydraulic motor, and the two transmission gears 1, the two transmission gears 2 and the transmission gear 3 are all rotatably connected in the housing.

[0008] Furthermore, the closing component includes a closing ring frame, which is rotatably connected to the outside of the rotating ring frame, the rotating ring frame is engaged with the control gear for transmission, the control gear rotates in the shell, the control gear is fixedly connected to pinion 2, pinion 2 is engaged with pinion 1 for transmission, pinion 1 is engaged with the skateboard gear for transmission, the skateboard is connected to the output end of hydraulic cylinder 3, and hydraulic cylinder 3 is fixed on the side of the shell.

[0009] Furthermore, the fastening component includes a fastening ring frame, which is rotatably connected to the upper end of the fastening ring frame, a fixed platform is provided on the opposite side of the opening of the fastening ring frame, the fixed platform is slidably connected to the connecting plate, a spring 1 is provided between the fixed platform and the connecting plate, a clamping block is provided at the lower end of the connecting plate, the connecting plate is slidably connected to the extrusion block, a lower pressure ring plate is fixed to the upper end of the extrusion block, and a spring 2 is provided between the connecting plate and the lower pressure ring plate.

[0010] Furthermore, the fastening ring frame is slidably connected to the rear end of the top plate, an extrusion groove is provided in the top plate, the extrusion block is slidably fitted in the extrusion groove, and the front end of the top plate is extruded on the outside of the drill rod.

[0011] Furthermore, a hydraulic cylinder 1 is fixed at the upper end bracket of the hydraulic motor, the output end of the hydraulic cylinder 1 is connected to the slide, the slide is slidably connected to the upper end of the shell, the slide is fixedly connected to the hydraulic cylinder 2, the output end of the hydraulic cylinder 2 is connected to the upper pressure ring plate, and the upper pressure ring plate can be squeezed on the upper side of the lower pressure ring plate.

[0012] Furthermore, a suspension rod assembly is provided at the upper end of the shell, and the suspension rod assembly includes an outer shell, which is fixed to the upper end of the shell, and a central axis rod is rotatably connected inside the outer shell, the central axis rod is rotatably connected to the rotating shaft, the rotating shaft is fixedly connected to the end of the control rod, the rotating shaft is fixedly connected to the protrusion, the protrusion is rotatably connected to the shaft rod, the shaft rod is fixedly connected to the limit block, a triangular block is fixed at the front end of the limit block, the central axis rod is fixedly connected to the lifting control gear, and the triangular block is clamped on the lifting control gear.

[0013] Furthermore, a turbine bump is provided on the lifting control gear, the outer shell is slidably connected to the connecting piece, a slot is provided on the connecting piece, the turbine bump is slidably connected in the slot, a suspension rod is fixed on the connecting piece, and side ears are provided on both sides of the outer shell.

[0014] Furthermore, side protruding teeth are provided on both sides of the connecting piece, the shell is slidably connected to the latch, and the front end of the latch is inserted into the tooth groove of the side protruding teeth.

[0015] The advantages of the present invention are:

[0016] The drill rod is then clamped in place by the cam which is held in place until it is unlocked and the drill rod is re-engaged with the cam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 5 The structure diagram of the rotary clamping component of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 6 The structure diagram of the rotary clamping component of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 7 Schematic diagram of the fastening component structure of the present invention Figure 1 ;

[0024] Figure 8 Schematic diagram of the fastening component structure of the present invention Figure 2 ;

[0025] Figure 9 for Figure 8 A partial enlarged view of the middle part;

[0026] Figure 10 Schematic diagram of the boom assembly structure of the present invention Figure 1 ;

[0027] Figure 11 Schematic diagram of the boom assembly structure of the present invention Figure 2 ;

[0028] Figure 12 Schematic diagram of the boom assembly structure of the present invention Figure 3 ;

[0029] Figure 13Schematic diagram of the boom assembly structure of the present invention Figure 4 ;

[0030] Figure 14 Schematic diagram of the boom assembly structure of the present invention Figure 5 ;

[0031] Figure 15 Schematic diagram of the boom assembly structure of the present invention Figure 6 ;

[0032] Description of the marks in the figure:

[0033] Housing 1; fixing column 2; annular fixing plate 3; clamping plate 4; triangular protrusion 5; rotating ring frame 6; inclined groove 7; closed ring frame 8; transmission gear 1 9; transmission gear 2 10; transmission gear 3 11; control gear 12; fastening ring frame 13; fixing platform 14; connecting plate 15; clamping block 16; spring 1 17; lower pressure ring plate 18; extrusion block 19; top plate 20; extrusion groove 21; spring 2 22; hydraulic motor 23; hydraulic Cylinder 1 24; slide 25; hydraulic cylinder 2 26; upper pressure ring plate 27; hydraulic cylinder 3 28; slide plate 29; pinion 1 30; pinion 2 31; housing 32; control rod 33; rotating shaft 34; central shaft 35; protrusion 36; limit block 37; shaft 38; lifting control gear 39; triangular block 40; turbine protrusion 41; connecting piece 42; slot 43; side protruding teeth 44; suspension rod 45; latch 46; side ear 47. DETAILED DESCRIPTION

[0034] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Example 1

[0037] like Figures 1-15As shown, a twist-off anti-slip drill pipe power tong includes a housing 1, a hydraulic motor 23 is provided in the housing 1, and the hydraulic motor 23 drives a rotary clamping component to rotate, clamping the drill pipe and driving the drill pipe to rotate. The rotary clamping component is rotatably connected to the housing 1, and a closing component rotatably connected to the outside of the rotary clamping component closes the entrance of the housing 1. A fastening component is provided on the rotary clamping component to further clamp the drill pipe.

[0038] The working principle of the above technical solution is: move the unscrewing and anti-slip drill rod power tongs, send the drill rod from the entrance of the shell 1 into the rotary clamping component, close the entrance of the shell 1 through the closing component, drive the rotary clamping component to rotate through the hydraulic motor 23, rotate the rotary clamping component to clamp the drill rod, and continue to rotate the rotary clamping component to drive the drill rod to rotate. Since the rotary clamping component cannot clamp the drill rod on the entrance side of the shell 1, the fastening component can be moved to the entrance of the shell 1, and the drill rod can be further clamped by the fastening component to enhance the clamping force of the drill rod and prevent the drill rod from slipping during the unscrewing and unscrewing process.

[0039] Example 2

[0040] like Figures 1-15 As shown, the rotating clamping component includes two annular fixing plates 3, which are rotatably connected to the upper and lower ends of the housing 1 respectively. A plurality of fixing columns 2 are fixed between the two annular fixing plates 3. The fixing columns 2 are rotatably connected to one end of the clamping plate 4. A triangular protrusion 5 is provided on the back of the clamping plate 4. A rotating ring frame 6 is rotatably connected between the two annular fixing plates 3. The rotating ring frame 6 is provided with an oblique groove 7, and the triangular protrusion 5 is located in the oblique groove 7.

[0041] The rotating ring frame 6 is connected to the two transmission gears 19 by gear transmission, the two transmission gears 19 are respectively connected to the two transmission gears 2 10 by gear transmission, the two transmission gears 2 10 are both connected to the transmission gear 3 11 by gear transmission, the transmission gear 3 11 is connected to the output end of the hydraulic motor 23, and the two transmission gears 19, the two transmission gears 2 10 and the transmission gear 3 11 are all rotatably connected in the housing 1;

[0042] The working principle of the above technical solution is as follows: move the unscrewing and anti-slip drill pipe power tongs, send the drill pipe from the entrance of the shell 1 into the rotating ring frame 6, start the hydraulic motor 23 to drive the transmission gear three 11 to rotate, drive the two transmission gears two 10 to rotate in the same direction, and the two transmission gears two 10 respectively drive the two transmission gears one 9 to rotate, drive the rotating ring frame 6 to rotate, and the triangular protrusion 5 provided on the back of the clamping plate 4 slides with the edge of the inclined groove 7, so that one end of the clamping plate 4 rotates with the fixed column 2, and the other end of the clamping plate 4 moves toward the center position of the rotating ring frame 6 and rests on the outer wall of the drill pipe. Multiple clamping plates 4 are provided in the rotating ring frame 6, and multiple clamping plates 4 clamp the drill pipe. When the triangular protrusion 5 and the edge of the inclined groove 7 cannot slide, the rotating ring frame 6 continues to rotate, driving multiple clamping plates 4 to rotate with the rotating ring frame 6, driving the fixed column 2 and the annular fixed plate 3 to rotate, and driving the drill pipe to rotate, completing the clamping and rotation of the drill pipe, which is convenient and fast;

[0043] The clamping plates 4 in the rotating ring frame 6 are arranged in two layers, the upper and lower layers. The two layers of clamping plates 4 increase the clamping area between the drill rod and the drill rod, increase the friction force, and thus effectively reduce the risk of the drill rod slipping.

[0044] Example 3

[0045] like Figures 1-15 As shown, the closing component includes a closing ring frame 8, which is rotatably connected to the outside of the rotating ring frame 6. The rotating ring frame 6 is engaged with the control gear 12 for transmission. The control gear 12 rotates in the housing 1. The control gear 12 is fixedly connected to the second pinion 31. The second pinion 31 is engaged with the first pinion 30 for transmission. The first pinion 30 is engaged with the slide 29 for transmission. The slide 29 is connected to the output end of the third hydraulic cylinder 28. The third hydraulic cylinder 28 is fixed to the side of the housing 1.

[0046] The working principle of the above technical solution is as follows: the unscrewing and anti-slip drill pipe power tongs are moved to feed the drill pipe from the inlet of the housing 1 into the rotating ring frame 6, and the hydraulic cylinder 3 28 is started to drive the slide 29 to move forward, drive the pinion 1 30 to rotate, drive the pinion 2 31 to rotate, drive the control gear 12 to rotate, and drive the closed ring frame 8 to rotate. The closed ring frame 8 rotates at an angle of 90 degrees, and the inlet of the closed ring frame 8 is separated from the inlet of the housing 1. The closed ring frame 8 seals the inlet of the housing 1, reducing the risk of the drill pipe being thrown out of the housing 1 during rotation.

[0047] Example 4

[0048] like Figures 1-15As shown, the fastening component includes a fastening ring frame 13, the fastening ring frame 13 is rotatably connected to the upper end of the fastening ring frame 13, a fixed platform 14 is provided on the opposite side of the opening of the fastening ring frame 13, the fixed platform 14 is slidably connected to the connecting plate 15, a spring 17 is provided between the fixed platform 14 and the connecting plate 15, a clamping block 16 is provided at the lower end of the connecting plate 15, the connecting plate 15 is slidably connected to the extrusion block 19, a lower pressure ring plate 18 is fixed to the upper end of the extrusion block 19, and a spring 22 is provided between the connecting plate 15 and the lower pressure ring plate 18;

[0049] The fastening ring frame 13 is slidably connected to the rear end of the top plate 20. An extrusion groove 21 is provided in the top plate 20. The extrusion block 19 is slidably fitted in the extrusion groove 21. The front end of the top plate 20 is squeezed on the outside of the drill pipe.

[0050] A hydraulic cylinder 1 24 is fixed to the upper end bracket of the hydraulic motor 23, and the output end of the hydraulic cylinder 1 24 is connected to the slide 25, which is slidably connected to the upper end of the housing 1. The slide 25 is fixedly connected to the hydraulic cylinder 2 26, and the output end of the hydraulic cylinder 2 26 is connected to the upper pressure ring plate 27, which can be squeezed on the upper side of the lower pressure ring plate 18;

[0051] The working principle of the above technical solution is as follows: the unscrewing and anti-slip drill pipe power tongs are moved to feed the drill pipe from the inlet of the housing 1 into the rotating ring frame 6, and the hydraulic cylinder 3 28 is activated to drive the slide 29 to move forward, driving the pinion 1 30 to rotate, driving the pinion 2 31 to rotate, driving the control gear 12 to rotate, and driving the closed ring frame 8 to rotate. The closed ring frame 8 rotates 90 degrees, and the inlet of the closed ring frame 8 is separated from the inlet of the housing 1, and the closed ring frame 8 closes the inlet of the housing 1;

[0052] In the initial state, the opening direction of the lower pressure ring plate 18 is consistent with the opening direction of the shell 1, and the connecting plate 15 is pulled upward, driving the block 16 to move up with the connecting plate 15, driving the connecting plate 15 and the fixed platform 14 to slide, driving the spring 17 to be compressed, and the connecting plate 15 is rotated 180 degrees, driving the lower pressure ring plate 18 to rotate 180 degrees, so that the fixed platform 14 is rotated above the entrance of the shell 1, and the upward pull restriction on the connecting plate 15 is released. Under the elastic force of the spring 17, the connecting plate 15 is driven to move downward, driving the block 16 to move downward, and the block 16 is clamped at the opening of the annular fixing plate 3, so that the fastening component can rotate synchronously with the annular fixing plate 3;

[0053] Start the hydraulic cylinder 1 24 to drive the slide 25 to move forward, drive the slide 25 to slide forward on the housing 1, drive the hydraulic cylinder 2 26 to move with the slide 25, and drive the upper pressure ring plate 27 to move above the lower pressure ring plate 18;

[0054] Start the hydraulic motor 23 to drive the transmission gear three 11 to rotate, and drive the two transmission gears two 10 to rotate in the same direction. The two transmission gears two 10 respectively drive the two transmission gears one 9 to rotate, and drive the rotating ring frame 6 to rotate. The triangular protrusion 5 provided on the back of the clamping plate 4 slides with the edge of the inclined groove 7, so that one end of the clamping plate 4 and the fixed column 2 rotate, and the other end of the clamping plate 4 moves toward the center position of the rotating ring frame 6 and rests on the outer wall of the drill pipe. A plurality of clamping plates 4 are provided in the rotating ring frame 6, and the plurality of clamping plates 4 clamp the drill pipe. When the triangular protrusion 5 and the edge of the inclined groove 7 cannot slide, the rotating ring frame 6 continues to rotate, driving the plurality of clamping plates 4 to rotate with the rotating ring frame 6, driving the fixed column 2 and the annular fixed plate 3 to rotate, and driving the drill pipe to rotate, thereby completing the clamping and rotation of the drill pipe.

[0055] Since the clamping block 16 is clamped at the opening of the annular fixing plate 3, the annular fixing plate 3 rotates, driving the clamping block 16 to rotate, driving the connecting plate 15 to rotate, and then driving the entire fastening component to rotate;

[0056] Start hydraulic cylinder 26, drive upper pressure ring plate 27 to move downward, upper pressure ring plate 27 squeezes lower pressure ring plate 18 to move downward, and sliding occurs between upper pressure ring plate 27 and lower pressure ring plate 18. The downward movement of lower pressure ring plate 18 drives extrusion block 19 to move downward, drives spring 22 to be compressed, and the lower end of extrusion block 19 slides with extrusion groove 21, drives top plate 20 to move toward the drill rod until the front end of top plate 20 rests on the outer wall of drill rod, making up for the defect that the rotating clamping component cannot clamp the drill rod on the inlet side of shell 1, further enhancing the clamping force of drill rod, and thereby effectively reducing the risk of drill rod slippage.

[0057] Example 5

[0058] like Figures 1-15 As shown, the upper end of the housing 1 is provided with a boom assembly, which includes a shell 32, which is fixed to the upper end of the housing 1, and a central axis rod 35 is rotatably connected in the shell 32, the central axis rod 35 is rotatably connected to the rotating shaft 34, the rotating shaft 34 is fixedly connected to the end of the control rod 33, the rotating shaft 34 is fixedly connected to the protrusion 36, the protrusion 36 is rotatably connected to the shaft rod 38, the shaft rod 38 is fixedly connected to the limit block 37, a triangular block 40 is fixed to the front end of the limit block 37, the central axis rod 35 is fixedly connected to the lifting control gear 39, and the triangular block 40 is clamped on the lifting control gear 39;

[0059] The lifting control gear 39 is provided with a turbine bump 41, the housing 32 is slidably connected to the connecting member 42, the connecting member 42 is provided with a slot 43, the turbine bump 41 is slidably connected in the slot 43, a suspension rod 45 is fixed to the connecting member 42, and side ears 47 are provided on both sides of the housing 32;

[0060] The connector 42 is provided with side protruding teeth 44 on both sides, the housing 32 is slidably connected to the latch 46, and the front end of the latch 46 is inserted into the tooth groove of the side protruding teeth 44;

[0061] The working principle of the above technical solution is as follows: the lifting rod 45 is connected to the lifting equipment, and the side ear 47 can be held by hand to drive the unscrewing and anti-slip drill pipe power tongs to move, and the drill pipe is sent from the entrance of the shell 1 into the rotating ring frame 6, and the latch 46 is removed. The control rod 33 is pulled up and down to drive the shaft 34 to rotate back and forth, and the protrusion 36 to rotate back and forth. When the protrusion 36 follows the shaft 34 to rotate counterclockwise, the triangular block 40 at the front end of the limit block 37 is driven to slide with the convex teeth of the lifting control gear 39. When the protrusion 36 follows the shaft 34 to rotate clockwise, the triangular block 40 at the front end of the limit block 37 is driven to slide with the convex teeth of the lifting control gear 39. When the needle rotates, the triangular block 40 is engaged between two adjacent protruding teeth of the lifting control gear 39, driving the lifting control gear 39 to rotate clockwise. As the control rod 33 is continuously pulled back and forth, the lifting control gear 39 is driven to rotate continuously clockwise. The turbine convex block 41 follows the lifting control gear 39 and rotates continuously clockwise. The turbine convex block 41 is slidably connected in the card slot 43, driving the connecting member 42 to rise in the housing 32. Since the suspension rod 45 at the upper end of the connecting member 42 is connected to the lifting equipment, the housing 1 moves downward relative to the lifting equipment.

[0062] When the housing 1 needs to be moved upward, the shaft 38 is rotated to drive the limit block 37 to rotate to the other side of the protrusion 36, and the control rod 33 is pulled up and down reciprocatingly, driving the rotating shaft 34 to rotate reciprocatingly, driving the protrusion 36 to rotate reciprocatingly. When the protrusion 36 follows the rotating shaft 34 to rotate clockwise, the triangular block 40 at the front end of the limit block 37 is driven to slide with the convex teeth of the lifting control gear 39. When the protrusion 36 follows the rotating shaft 34 to rotate counterclockwise, the triangular block 40 is engaged between the two adjacent convex teeth of the lifting control gear 39, driving the lifting control gear 39 to rotate counterclockwise. As the control rod 33 is continuously pulled back and forth, the lifting control gear 39 is driven to rotate continuously counterclockwise, the turbine protrusion 41 follows the lifting control gear 39 to rotate continuously counterclockwise, and the turbine protrusion 41 is slidably connected in the card slot 43, driving the connecting member 42 to descend in the housing 32. Since the suspension rod 45 at the upper end of the connecting member 42 is connected to the lifting equipment, the housing 1 moves upward relative to the lifting equipment.

[0063] By adjusting the boom assembly, the height of the housing 1 is changed, the height of the rotating clamping component is changed, and the position of the rotating clamping component on the drill rod is changed, thereby adjusting to the optimal clamping position on the drill rod to ensure the stability of the clamping;

[0064] When the adjustment of the boom assembly is completed, the pin 46 is reinserted into the housing 32, and the front end of the pin 46 is inserted into the tooth groove of the side protruding tooth 44. The pin 46 effectively prevents the connecting member 42 from sliding freely in the housing 32, thereby ensuring the stability of the boom assembly after adjustment.

[0065] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A screw-down anti-slip drill pipe power tong, characterized in that: The invention comprises a housing (1), wherein a hydraulic motor (23) is provided in the housing (1), and the hydraulic motor (23) drives a rotary clamping component to rotate, thereby clamping a drill rod and driving the drill rod to rotate. The rotary clamping component is rotatably connected in the housing (1), and a closing component rotatably connected to the outside of the rotary clamping component closes the entrance of the housing (1). A fastening component is provided on the rotary clamping component, and the fastening component further clamps the drill rod.

2. The anti-slip drill pipe power tongs according to claim 1, characterized in that: The rotating clamping component comprises two annular fixing plates (3), the two annular fixing plates (3) are rotatably connected to the upper and lower ends of the housing (1), a plurality of fixing columns (2) are fixed between the two annular fixing plates (3), the fixing columns (2) are rotatably connected to one end of the clamping plate (4), a triangular protrusion (5) is provided on the back of the clamping plate (4), a rotating ring frame (6) is rotatably connected between the two annular fixing plates (3), an inclined groove (7) is provided in the rotating ring frame (6), and the triangular protrusion (5) is located in the inclined groove (7).

3. The anti-slip drill pipe power tongs according to claim 2, characterized in that: The rotating ring frame (6) is connected to the two transmission gears (9) by gear transmission, the two transmission gears (9) are respectively connected to the two transmission gears (10) by gear transmission, the two transmission gears (10) are both connected to the transmission gear (11) by gear transmission, the transmission gear (11) is connected to the output end of the hydraulic motor (23), and the two transmission gears (9), the two transmission gears (10) and the transmission gear (11) are all rotatably connected in the housing (1).

4. The anti-slip drill pipe power tongs according to claim 3, characterized in that: The enclosing component comprises an enclosing ring frame (8), the enclosing ring frame (8) is rotatably connected to the outside of the rotating ring frame (6), the rotating ring frame (6) is engaged with a control gear (12) for transmission, the control gear (12) is rotated in the housing (1), the control gear (12) is fixedly connected to a second pinion gear (31), the second pinion gear (31) is engaged with a first pinion gear (30) for transmission, the first pinion gear (30) is engaged with a slide plate (29) for transmission, the slide plate (29) is connected to an output end of a third hydraulic cylinder (28), and the third hydraulic cylinder (28) is fixed to the side of the housing (1).

5. The anti-slip drill pipe power tongs according to claim 4, characterized in that: The fastening component comprises a fastening ring frame (13), the fastening ring frame (13) is rotatably connected to the upper end of the fastening ring frame (13), a fixing platform (14) is provided on the opposite side of the opening of the fastening ring frame (13), the fixing platform (14) is slidably connected to the connecting plate (15), a spring 1 (17) is provided between the fixing platform (14) and the connecting plate (15), a clamping block (16) is provided at the lower end of the connecting plate (15), the connecting plate (15) is slidably connected to the extrusion block (19), a lower pressure ring plate (18) is fixed to the upper end of the extrusion block (19), and a spring 2 (22) is provided between the connecting plate (15) and the lower pressure ring plate (18).

6. The anti-slip drill pipe power tongs according to claim 5, characterized in that: The fastening ring frame (13) is slidably connected to the rear end of the top plate (20), an extrusion groove (21) is provided in the top plate (20), the extrusion block (19) is slidably fitted in the extrusion groove (21), and the front end of the top plate (20) is extruded on the outside of the drill rod.

7. The anti-slip drill pipe power tongs according to claim 6, characterized in that: A hydraulic cylinder 1 (24) is fixed at the upper end bracket of the hydraulic motor (23), the output end of the hydraulic cylinder 1 (24) is connected to a slide (25), the slide (25) is slidably connected to the upper end of the housing (1), the slide (25) is fixedly connected to the hydraulic cylinder 2 (26), the output end of the hydraulic cylinder 2 (26) is connected to an upper pressure ring plate (27), and the upper pressure ring plate (27) can be squeezed on the upper side of the lower pressure ring plate (18).

8. The anti-slip drill pipe power tongs according to claim 1, characterized in that: The upper end of the housing (1) is provided with a boom assembly, which includes a shell (32), the shell (32) is fixed to the upper end of the housing (1), a central axis rod (35) is rotatably connected in the shell (32), the central axis rod (35) is rotatably connected to the rotating shaft (34), the rotating shaft (34) is fixedly connected to the end of the control rod (33), the rotating shaft (34) is fixedly connected to the protrusion (36), the protrusion (36) is rotatably connected to the shaft rod (38), the shaft rod (38) is fixedly connected to the limit block (37), a triangular block (40) is fixed to the front end of the limit block (37), the central axis rod (35) is fixedly connected to the lifting control gear (39), and the triangular block (40) is clamped on the lifting control gear (39).

9. The anti-slip drill pipe power tongs according to claim 8, characterized in that: The lifting control gear (39) is provided with a turbine bump (41), the housing (32) is slidably connected to the connecting member (42), the connecting member (42) is provided with a slot (43), the turbine bump (41) is slidably connected in the slot (43), a suspension rod (45) is fixed on the connecting member (42), and side ears (47) are provided on both sides of the housing (32).

10. The anti-slip drill pipe power tongs according to claim 9, characterized in that: Side protruding teeth (44) are provided on both sides of the connecting member (42), the housing (32) is slidably connected to the latch (46), and the front end of the latch (46) is inserted into the tooth groove of the side protruding teeth (44).

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