Anti-slip drill rod power tongs for screwing and unscrewing

Abstract

The invention relates to the technical field of drill rod power tongs, and provides an anti-slip drill rod power tong capable of being screwed and unscrewed, which comprises a machine body, an opening formed in the front side of the machine body, a power tong body arranged in the machine body and an anti-slip assembly arranged in the machine body, an anti-slip mechanism comprises an electric push rod, the electric push rod is connected with the inner wall of the rear side of the machine body, and a driving plate is arranged at the front end of the electric push rod; an anti-slip mechanism is arranged on the driving plate and comprises two connecting rods, the two connecting rods are symmetrically arranged on the left side and the right side of the driving plate, one end of each connecting rod is hinged to the driving plate, the other end of each connecting rod is hinged to one end of a swing rod, the center of each swing rod is rotationally connected with a rotating shaft, and an anti-slip clamping block is arranged at the end, away from the corresponding connecting rod, of each swing rod. According to the power tong, the drill rod body in the power tong body can be blocked through the anti-skid clamping blocks, the drill rod body is locked in the power tong body, the drill rod body is prevented from slipping off from the opening of a machine body in the screwing-on or screwing-off process, and therefore the screwing-on or screwing-off efficiency of the drill rod is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drill rod power tongs, in particular to a screw-off anti-slipping type drill rod power tongs. Background Art

[0002] Drill pipe power tongs are important tools in oil field drilling and well repair operations. They have the advantages of easy operation, safety, labor saving and high operating efficiency.

[0003] For example, the application with the authorization announcement number CN110608001B discloses a drill pipe power tong, which relates to the technical field of drill pipe power tongs, specifically a tongs head, a transmission device, an automatic door, a brake band assembly, a lifting device, a planetary gearbox assembly and a transfer system assembly. The tongs head is assembled in the transmission device, an automatic door is installed at the opening of the transmission device, the brake band assembly is installed on the transmission device through a hole, a lifting device is installed above the transmission device, a planetary gearbox assembly is installed above the rear end of the transmission device, and a transfer system assembly is installed behind the transmission device. The drill pipe power tongs have a wide clamping diameter range and a large torque; it adopts a hydraulic and gas joint control and is easy to operate; it adopts an integrated structure of upper and lower tongs to enhance the overall rigidity of the power tongs and ensure the reliability of the power tongs in clamping drilling tools under large torque conditions; it adopts a floating structure of the upper tongs so that the upper and lower tongs can be automatically centered.

[0004] The above-mentioned drill pipe power tongs are equipped with an automatic door at the opening of the transmission device, but there is a certain distance between the automatic door and the drill pipe. During the process of unscrewing and removing the drill pipe, the automatic door cannot block the drill pipe, and the drill pipe is easy to slip off, resulting in interruption of the drill pipe operation, affecting the efficiency of making or removing the drill pipe, and may also cause the drill pipe itself to be bent, deformed, and other damages, increasing the operation cost. Summary of the invention

[0005] The invention provides a screw-off anti-slip drill pipe power tongs, which is used to solve the technical problem that the automatic door of the current drill pipe power tongs cannot block the drill pipe, the drill pipe is easy to slip, resulting in interruption of the drill pipe operation and affecting the efficiency of making or breaking the drill pipe.

[0006] In order to solve the above technical problems, the present invention discloses a screw-down and anti-slip drill pipe power tongs, comprising: a body, an opening is arranged on the front side of the body, a power tongs body is arranged in the body, an anti-slip assembly is arranged in the body, the anti-slip mechanism comprises an electric push rod, the electric push rod is connected to the inner wall of the rear side of the body, a driving plate is arranged at the front end of the electric push rod, the anti-slip mechanism is arranged on the driving plate, the anti-slip mechanism comprises two connecting rods, the two connecting rods are symmetrically arranged on the left and right sides of the driving plate, one end of the connecting rod is hingedly connected to the driving plate, the other end of the connecting rod is hingedly connected to one end of a swing rod, the center of the swing rod is rotatably connected to a rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the body, an anti-slip clamp is arranged at one end of the swing rod away from the connecting rod, and the two anti-slip clamps are used to prevent the drill pipe body from falling out of the opening.

[0007] Preferably, two groups of anti-slip mechanisms are provided, and the two groups of anti-slip mechanisms are respectively located on the upper and lower sides of the power tongs body.

[0008] Preferably, the anti-slip clamp block is arranged on a side of the swing rod close to the power tongs body.

[0009] Preferably, two slide grooves are symmetrically arranged on one side of the anti-slip clamp close to the power tong body, a pressure block is slidably arranged in the slide groove, and the pressure block is connected to the inner wall of the slide groove through a plurality of return springs.

[0010] Preferably, an installation cavity is provided on the side of the pressure block away from the anti-slip clamp block, a gear ring is provided in the installation cavity, the outside of the gear ring is provided with teeth, a fixed shaft is provided in the center of the gear ring, the upper and lower ends of the fixed shaft are respectively connected to the upper and lower inner walls of the installation cavity, two adjusting rods are symmetrically provided above the gear ring, the two adjusting rods are V-shaped, one end of the adjusting rod is rotatably connected to the fixed shaft, the other end of the adjusting rod is provided with a mounting plate, a contact mechanism is provided on the side of the mounting plate away from the adjusting rod, a connecting column is provided on the upper surface of the adjusting rod, and the two connecting columns are connected by a first connecting spring.

[0011] Preferably, a limit block is arranged in the installation cavity, and an outer wall of the gear ring is arranged on one side of the limit block to match it.

[0012] Preferably, the contact mechanism includes a fixed tube, which is fixedly connected to the side wall of the mounting plate, the fixed tube is perpendicular to the mounting plate, a sliding column is slidably arranged at one end of the fixed tube away from the gear ring, the sliding column is connected to the inner wall of the fixed tube through a second connecting spring, and a wheel axle is rotatably arranged at one end of the sliding column away from the fixed tube, and contact wheels are arranged at the upper and lower ends of the wheel axle.

[0013] Preferably, an anti-skid layer is provided on the outer wall of the contact wheel, and the anti-skid layer is made of anti-skid rubber material.

[0014] Preferably, a contact plate is provided at one end of the fixed tube close to the gear ring, the contact plate is arc-shaped, and one side of the contact plate is slidably connected to the outer wall of the gear ring.

[0015] Preferably, a clamping rod is provided at one end of the two sliding columns away from each other, one end of the clamping rod is rotatably connected to the outer wall of the sliding column through a rotating shaft, the other end of the clamping rod extends to the outside of the gear ring and is provided with a claw, a torsion spring is provided outside the rotating shaft, one end of the torsion spring is connected to the mounting plate, and the other end of the torsion spring is connected to the clamping rod.

[0016] The technical solution of the present invention has the following advantages: the present invention provides a screw-off anti-slip drill pipe power tong, which relates to the technical field of drill pipe power tongs, including a body, an opening is arranged at the front side of the body, a power tong body is arranged in the body, an anti-slip assembly is arranged in the body, the anti-slip mechanism includes an electric push rod, the electric push rod is connected to the inner wall of the rear side of the body, a driving plate is arranged at the front end of the electric push rod, an anti-slip mechanism is arranged on the driving plate, the anti-slip mechanism includes two connecting rods, the two connecting rods are symmetrically arranged on the left and right sides of the driving plate, one end of the connecting rod is hingedly connected to the driving plate, the other end of the connecting rod is hingedly connected to one end of the swing rod, the center of the swing rod is rotatably connected to the rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the body, an anti-slip clamp is arranged at one end of the swing rod away from the connecting rod, and the two anti-slip clamps are used to prevent the drill pipe body from slipping out of the opening. In the present invention, the drill pipe body in the power tong body can be blocked by the anti-slip clamp, and the drill pipe body is locked in the power tong body, so that the drill pipe body is prevented from slipping from the opening of the body during the process of making or breaking the screw, thereby improving the efficiency of making or breaking the screw of the drill pipe.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the devices particularly pointed out in the written description and the drawings of the description.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the anti-slip drill pipe power tongs of the present invention;

[0021] Figure 2 For the present invention Figure 1 Partial cross-sectional view at AA in the middle;

[0022] Figure 3 It is a schematic diagram of the contact between the contact mechanism and the drill pipe body in the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0024] Figure 5 This is a schematic diagram of the internal structure of the briquette in the present invention;

[0025] Figure 6 It is a schematic diagram of the contact wheel structure in the present invention;

[0026] Figure 7 It is a schematic diagram of the locking mechanism structure in the present invention.

[0027] In the figure: 1. body; 2. opening; 3. power tongs body; 4. electric push rod; 5. driving plate; 6. connecting rod; 7. swing rod; 8. rotating shaft; 9. anti-skid clamp; 10. drill rod body; 11. slide groove; 12. pressure block; 13. reset spring; 14. installation cavity; 15. gear ring; 16. fixed shaft; 17. adjustment rod; 18. installation plate; 19. connecting column; 20. first connecting spring; 21. limit block; 22. fixed pipe; 23. sliding column; 24. wheel axle; 25. contact wheel; 26. contact plate; 27. clamping rod; 28. claw; 29. ​​ratchet; 30. locking rod; 31. fixing sleeve; 32. compression spring; 33. electromagnet; 34. iron block. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] Example 1

[0031] The embodiment of the present invention provides a screw-off anti-slip drill pipe power tongs, such as Figure 1-Figure 6As shown, it includes: a body 1, an opening 2 is arranged on the front side of the body 1, a power tongs body 3 is arranged in the body 1, an anti-slip assembly is arranged in the body 1, the anti-slip mechanism includes an electric push rod 4, the electric push rod 4 is connected to the inner wall of the rear side of the body 1, a driving plate 5 is arranged at the front end of the electric push rod 4, and an anti-slip mechanism is arranged on the driving plate 5, the anti-slip mechanism includes two connecting rods 6, the two connecting rods 6 are symmetrically arranged on the left and right sides of the driving plate 5, one end of the connecting rod 6 is hingedly connected to the driving plate 5, the other end of the connecting rod 6 is hingedly connected to one end of a swing rod 7, the center of the swing rod 7 is rotatably connected to a rotating shaft 8, one end of the rotating shaft 8 is rotatably connected to the inner wall of the body 1, and an anti-slip clamp 9 is arranged at one end of the swing rod 7 away from the connecting rod 6, and the two anti-slip clamps 9 are used to prevent the drill rod body 10 from falling out of the opening 2.

[0032] The working principle and beneficial effects of the above technical solution are as follows: when in use, first align the opening 2 of the body 1 with the drill rod body 10, and then push the body 1 so that the drill rod body 10 enters the power tongs body 3 along the opening 2 and contacts the inner wall of the power tongs body 3, and then start the electric push rod 4. The electric push rod 4 is pushed forward to drive the driving plate 5 to move in the body 1, and the driving plate 5 drives the swing rod 7 to rotate through the connecting rod 6. The swing rod 7 rotates away from one end of the connecting rod 6 toward the drill rod body 10 until the anti-slip clamp block 9 contacts the outer wall of the drill rod body 10. At this time, the drill rod body 10 is restricted in the power tongs body 3, and the anti-slip clamp block 9 is made of anti-slip material. When the anti-slip clamp block 9 contacts the outer wall of the drill rod body 10, it can prevent the drill rod body 10 from sliding downward, avoid the drill rod body 10 from slipping, and improve the stability of the drill rod body 10. In the present invention, the anti-slip clamp block 9 can block the drill rod body 10 in the power tong body 3 and lock the drill rod body 10 in the power tong body 3, thereby preventing the drill rod body 10 from slipping out of the opening 2 of the body 1 during the process of making up or breaking out the drill rod, thereby improving the efficiency of making up or breaking out the drill rod, and preventing the drill rod from being damaged due to slipping, reducing the operation cost, and improving the safety of the operation.

[0033] Example 2

[0034] On the basis of the above-mentioned embodiment 1, two groups of anti-slip mechanisms are provided, and the two groups of anti-slip mechanisms are respectively located at the upper and lower sides of the power tong body 3;

[0035] The anti-slip clamp block 9 is arranged on a side of the swing rod 7 close to the power tongs body 3 .

[0036] The working principle and beneficial effects of the above technical solution are as follows: the anti-slip mechanism is respectively arranged on the upper and lower sides of the power tongs body 3, and through the cooperation of the anti-slip mechanism on the inner wall of the power tongs and the upper and lower sides, the four anti-slip clamps 9 are respectively in contact with the outer wall of the drill rod body 10, and the drill rod body 10 is limited and squeezed into the power tongs body 3, so that the drill rod body 10 is tightly fitted with the inner wall of the power tongs body 3, avoiding the deviation of the drill rod body 10 and improving the anti-slip performance.

[0037] Example 3

[0038] On the basis of Example 1 or 2, Figure 4 As shown, two slide grooves 11 are symmetrically arranged on one side of the anti-skid clamp block 9 close to the power tong body 3 , and a pressure block 12 is slidably arranged in the slide groove 11 . The pressure block 12 is connected to the inner wall of the slide groove 11 through a plurality of return springs 13 .

[0039] The working principle and beneficial effects of the above technical solution are as follows: by setting the pressure block 12, the two pressure blocks 12 in the same anti-slip clamp 9 can both contact the drill rod body 10, which is convenient for positioning the drill rod body 10, and increases the contact area, thereby improving the anti-slip performance. A reset spring 13 is set between the pressure block 12 and the slide groove 11, which can improve the adaptability of the pressure block 12, so that the anti-slip mechanism can adapt to drill rod bodies 10 of different diameters, thereby expanding the scope of application.

[0040] Example 4

[0041] On the basis of Example 3, Figure 5 As shown, a mounting cavity 14 is provided on the side of the pressure block 12 away from the anti-slip clamp 9, a gear ring 15 is provided in the mounting cavity 14, the gear ring 15 has teeth on the outside, a fixed shaft 16 is provided in the center of the gear ring 15, the upper and lower ends of the fixed shaft 16 are respectively connected to the upper and lower inner walls of the mounting cavity 14, two adjusting rods 17 are symmetrically provided above the gear ring 15, the two adjusting rods 17 are V-shaped, one end of the adjusting rod 17 is rotatably connected to the fixed shaft 16, the other end of the adjusting rod 17 is provided with a mounting plate 18, a contact mechanism is provided on the side of the mounting plate 18 away from the adjusting rod 17, a connecting column 19 is provided on the upper surface of the adjusting rod 17, and the two connecting columns 19 are connected by a first connecting spring 20.

[0042] The working principle and beneficial effects of the above technical solution are as follows: when the electric push rod 4 is extended, the pressure block 12 gradually approaches the drill rod body 10, and the contact mechanism arranged on one side of the adjusting rod 17 first contacts the drill rod body 10, and then the two adjusting rods 17 rotate in the direction away from each other, so that the first connecting spring 20 is stretched. Under the elastic force of the first connecting spring 20, the contact mechanism is tightly connected to the outer wall of the drill rod body 10 to prevent the drill rod body 10 from slipping out of the power tongs body 3. When the buckling or unbuckling is completed, the electric push rod 4 is retracted, and the pressure block 12 returns to its original position. Under the action of the first connecting spring 20, the two adjusting rods 17 also return to their original positions for the next use.

[0043] Example 5

[0044] On the basis of Example 4, Figure 5 As shown, a limit block 21 is disposed in the installation cavity 14 , and an outer wall of the gear ring 15 is disposed on one side of the limit block 21 to match the outer wall of the gear ring 15 .

[0045] The working principle and beneficial effects of the above technical solution are as follows: by providing the limit block 21 , the gear ring 15 can be prevented from rotating, thereby improving the reliability of the gear ring 15 .

[0046] Example 6

[0047] On the basis of Example 4, Figure 5 , Figure 6 As shown, the contact mechanism includes a fixed tube 22, which is fixedly connected to the side wall of the mounting plate 18, the fixed tube 22 is perpendicular to the mounting plate 18, a sliding column 23 is slidably arranged at one end of the fixed tube 22 away from the gear ring 15, the sliding column 23 is connected to the inner wall of the fixed tube 22 through a second connecting spring, and a wheel axle 24 is rotatably arranged at one end of the sliding column 23 away from the fixed tube 22, and contact wheels 25 are arranged at the upper and lower ends of the wheel axle 24.

[0048] The working principle and beneficial effects of the above technical solution are as follows: when the pressure block 12 gradually approaches the outer wall of the drill rod body 10, the contact wheel 25 in the same pressure block 12 first contacts the outer wall of the drill rod body 10, and then the two adjustment rods 17 start to rotate, and the angle between the two adjustment rods 17 increases. When the angle between the two adjustment rods 17 reaches the preset angle, the sliding column 23 slides in the fixed tube 22, and the second connecting spring is compressed, and the contact wheel 25 contacts the outer wall of the drill rod body 10, which can not only prevent the drill rod from sliding down and falling out, but also when the drill rod body 10 rotates, the contact wheel 25 rolls along the outer wall of the drill rod body 10. The movement reduces wear and tear, does not affect the make-up or make-out of the drill rod body 10, ensures the working efficiency, avoids the power loss caused by friction, and achieves the energy-saving effect; in addition, the driving plate 5 can extend downward to the outside of the drill rod to be connected below. At this time, the contact wheel 25 of the anti-slip mechanism on the lower side can contact the outer wall of the drill rod below, while the contact wheel 25 of the anti-slip mechanism on the upper side contacts the outer wall of the drill rod body 10, so that the central axis of the drill rod body 10 is in the same straight line with the central axis of the drill rod below, reducing the deviation generated during the screwing and unscrewing process of the drill rod body 10, reducing the wear of the drill rod body 10, and extending the service life.

[0049] Example 7

[0050] On the basis of Example 6, Figure 6 As shown, an anti-skid layer is arranged on the outer wall of the contact wheel 25, and the anti-skid layer is made of anti-skid rubber material.

[0051] The working principle and beneficial effects of the above technical solution are as follows: a plurality of annular anti-skid grooves are arranged on the outer wall of the anti-skid layer, and the plurality of annular anti-skid grooves are arranged at equal intervals along the axial direction of the contact wheel 25. By arranging the anti-skid layer, the anti-skid effect of the contact wheel 25 can be improved to prevent the drill rod body 10 from sliding downward, and the friction force is enhanced by the plurality of anti-skid grooves in the axial direction, further preventing the drill rod body 10 from sliding off, thereby improving the safety of the operation.

[0052] Example 8

[0053] On the basis of Example 6 or 7, Figure 5 As shown, a contact plate 26 is provided at one end of the fixed tube 22 close to the gear ring 15 . The contact plate 26 is arc-shaped, and one side of the contact plate 26 is slidably connected to the outer wall of the gear ring 15 .

[0054] The working principle and beneficial effects of the above technical solution are as follows: the contact plate 26 can slide along the outer wall of the gear ring 15 , thereby improving the reliability of the adjustment rod 17 .

[0055] Example 9

[0056] On the basis of any one of Examples 6-8, Figure 5 As shown, a clamping rod 27 is set at one end of the two sliding columns 23 away from each other, and one end of the clamping rod 27 is rotatably connected to the outer wall of the sliding column 23 through a rotating shaft. The other end of the clamping rod 27 extends to the outside of the gear ring 15 and is provided with a claw 28. A torsion spring is set outside the rotating shaft, one end of the torsion spring is connected to the mounting plate 18, and the other end of the torsion spring is connected to the clamping rod 27.

[0057] The working principle and beneficial effects of the above technical solution are as follows: when the second connecting spring is compressed, the sliding column 23 drives the clamping rod 27 to gradually approach the gear ring 15 until the claw 28 at one end of the clamping rod 27 is clamped into a tooth of the gear ring 15. At this time, the electric push rod 4 stops extending. The abutment between the claw 28 and the tooth can fix the adjusting rod 17 to prevent the adjusting rod 17 from further rotating. The clamping rod 27 has a supporting effect on the contact wheel 25, effectively protecting the first connecting spring 20 and the second connecting spring, improving the reliability of the adjusting rod 17, and making the contact wheel 25 in close contact with the outer wall of the drill rod body 10, thereby improving the stability of the drill rod body 10 and further enhancing the anti-slip performance.

[0058] Example 10

[0059] On the basis of any one of Examples 6-9, Figure 7 As shown, the upper end of the rotating shaft 8 is rotatably connected to the upper inner wall of the body 1, and a locking mechanism is arranged on the outside of the rotating shaft 8. The locking mechanism includes a ratchet 29, which is arranged near the upper end of the rotating shaft 8. A locking rod 30 is arranged on the outside of the ratchet 29. One end of the locking rod 30 is adapted to the ratchet teeth on the outside of the ratchet 29, and the other end of the locking rod 30 is slidably arranged in a fixed sleeve 31. The fixed sleeve 31 is arranged on the upper inner wall of the body 1. The locking rod 30 is connected to the inner wall of the fixed sleeve 31 through a compression spring 32. An electromagnet 33 is arranged on the inner wall of the fixing sleeve 31 away from the locking rod 30, and an iron block 34 is arranged on the end of the locking rod 30 away from the ratchet 29.

[0060] The working principle and beneficial effects of the above technical solution are as follows: when the contact wheel 25 approaches the drill rod body 10, the rotating shaft 8 rotates in the machine body 1, the rotating shaft 8 drives the ratchet 29 to rotate, and pushes the locking rod 30 to slide into the fixed sleeve 31. When the contact wheel 25 contacts the outer wall of the drill rod body 10, the ratchet teeth of the locking rod 30 and the ratchet 29 cooperate to prevent the ratchet 29 from rotating in the opposite direction, so that the contact wheel 25 is always close to the outer wall of the drill rod body 10, and the electric push rod 4 is prevented from failing to retract and causing the drill rod body 10 to slip off. After the drill rod body 10 is unscrewed, the electromagnet 33 is energized, and the electromagnet 33 can attract the iron block 34, so that the locking rod 30 slides inwardly in the fixed sleeve 31, and the end of the locking rod 30 is separated from the ratchet 29. At this time, the electric push rod 4 is controlled to retract, so that the contact wheel 25 can be separated from the drill rod body 10, and the anti-slip clamp 9 is restored to its original position, which is convenient for the next operation.

[0061] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. The anti-slip drill pipe power tongs are characterized by: include: The machine body (1) has an opening (2) at the front side of the machine body (1), a power clamp body (3) is arranged inside the machine body (1), an anti-slip assembly is arranged inside the machine body (1), the anti-slip mechanism comprises an electric push rod (4), the electric push rod (4) is connected to the inner wall of the rear side of the machine body (1), a driving plate (5) is arranged at the front end of the electric push rod (4), the anti-slip mechanism is arranged on the driving plate (5), and the anti-slip mechanism comprises two connecting rods (6), the two connecting rods (6) are symmetrically arranged on the driving plate (5) and the anti-slip mechanism comprises two connecting rods (6). On the left and right sides of the moving plate (5), one end of the connecting rod (6) is hingedly connected to the driving plate (5), the other end of the connecting rod (6) is hingedly connected to one end of a swing rod (7), the center of the swing rod (7) is rotatably connected to a rotating shaft (8), one end of the rotating shaft (8) is rotatably connected to the inner wall of the machine body (1), and an anti-skid clamping block (9) is arranged at one end of the swing rod (7) away from the connecting rod (6), and the two anti-skid clamping blocks (9) are used to prevent the drill rod body (10) from falling out of the opening (2).

2. The anti-slip drill pipe power tongs according to claim 1 are characterized in that: Two groups of anti-slip mechanisms are provided, and the two groups of anti-slip mechanisms are respectively located at the upper and lower sides of the power tongs body (3).

3. The anti-slip drill pipe power tongs according to claim 1 are characterized in that: The anti-slip clamp block (9) is arranged on a side of the swing rod (7) close to the power tongs body (3).

4. The anti-slip drill pipe power tongs according to claim 1, characterized in that: Two slide grooves (11) are symmetrically arranged on one side of the anti-slip clamp block (9) close to the power tong body (3), a pressure block (12) is slidably arranged in the slide groove (11), and the pressure block (12) is connected to the inner wall of the slide groove (11) through a plurality of return springs (13).

5. The anti-slip drill pipe power tongs according to claim 4 are characterized in that: A mounting cavity (14) is arranged on the side of the pressure block (12) away from the anti-slip clamping block (9), a toothed ring (15) is arranged in the mounting cavity (14), the outer surface of the toothed ring (15) is provided with teeth, a fixed shaft (16) is arranged at the center of the toothed ring (15), the upper and lower ends of the fixed shaft (16) are respectively connected to the upper and lower inner walls of the mounting cavity (14), two adjusting rods (17) are symmetrically arranged above the toothed ring (15), the two adjusting rods (17) are V-shaped, one end of the adjusting rod (17) is rotatably connected to the fixed shaft (16), the other end of the adjusting rod (17) is arranged with a mounting plate (18), a contact mechanism is arranged on the side of the mounting plate (18) away from the adjusting rod (17), a connecting column (19) is arranged on the upper surface of the adjusting rod (17), and the two connecting columns (19) are connected by a first connecting spring (20).

6. The anti-slip drill pipe power tongs according to claim 5, characterized in that: A limit block (21) is arranged in the installation cavity (14), and an outer wall of the toothed ring (15) is arranged on one side of the limit block (21) to match the outer wall of the toothed ring (15).

7. The anti-slip drill pipe power tongs according to claim 5, characterized in that: The contact mechanism comprises a fixed tube (22), the fixed tube (22) is fixedly connected to the side wall of the mounting plate (18), the fixed tube (22) is perpendicular to the mounting plate (18), a sliding column (23) is slidably arranged at one end of the fixed tube (22) away from the gear ring (15), the sliding column (23) is connected to the inner wall of the fixed tube (22) through a second connecting spring, a wheel shaft (24) is rotatably arranged at one end of the sliding column (23) away from the fixed tube (22), and contact wheels (25) are arranged at the upper and lower ends of the wheel shaft (24).

8. The anti-slip drill pipe power tongs according to claim 7, characterized in that: The outer wall of the contact wheel (25) is provided with an anti-skid layer, and the anti-skid layer is made of anti-skid rubber material.

9. The anti-slip drill pipe power tongs according to claim 7, characterized in that: A contact plate (26) is arranged at one end of the fixed tube (22) close to the gear ring (15). The contact plate (26) is arc-shaped, and one side of the contact plate (26) is slidably connected to the outer wall of the gear ring (15).

10. The anti-slip drill pipe power tongs according to claim 7, characterized in that: A clamping rod (27) is arranged at one end of the two sliding posts (23) which are away from each other. One end of the clamping rod (27) is rotatably connected to the outer wall of the sliding post (23) through a rotating shaft. The other end of the clamping rod (27) extends to the outside of the gear ring (15) and is provided with a clamping claw (28). A torsion spring is arranged outside the rotating shaft. One end of the torsion spring is connected to the mounting plate (18), and the other end of the torsion spring is connected to the clamping rod (27).

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