Efficient welding method for wear-resistant belt of drill rod joint

Abstract

The invention provides an efficient welding method for a wear-resistant belt of a drill rod joint. The efficient welding method comprises the steps of fixing the drill rod joint, preparing before welding, aligning and adjusting a welding gun and welding the drill rod joint. A to-be-welded drill rod joint is installed on welding equipment, the to-be-welded drill rod joint is adjusted to enable the axis of the to-be-welded drill rod joint to be kept horizontal, and then the to-be-welded drill rod joint is in power connection with the welding equipment. And cleaning and polishing the welding area of the drill rod joint to be welded. Two welding guns are arranged on the welding equipment in a spaced mode, and the welding guns are adjusted to be arranged in the radial direction of the drill rod connector to be welded. And the welding equipment is started, the to-be-welded drill rod joint is made to rotate, all the welding guns are controlled to move to the welding area of the to-be-welded drill rod joint, nozzles of all the welding guns are made to be close to the surface of the to-be-welded drill rod joint, and wear-resisting belt welding work is conducted. According to the efficient welding method for the wear-resistant belt of the drill rod joint, the welding effect can be guaranteed, the welding efficiency of the wear-resistant belt is improved, and practicability is high.

Description

Technical Field

[0001] The invention belongs to the technical field of drill rod joint wear-resistant belt welding, and in particular relates to a high-efficiency welding method for a drill rod joint wear-resistant belt. Background Art

[0002] The drill pipe is a key tool used to connect the surface equipment of the drilling rig and the bottom drilling and grinding equipment. It plays the role of lifting the drill bit, applying drilling pressure, transmitting power, and conveying drilling fluid. In the process of oil field exploration and development drilling, especially in deep wells, large displacement wells, and high-angle wells, the drill pipe joints are severely worn, causing significant losses to the oil field. Therefore, the wear-resistant belt technology is widely used as the main way to protect the drill pipe joints. The wear-resistant belt technology is actually to weld a layer of cemented carbide material of a certain width on the surface of the drill pipe joint, which is fused to the surface of the drill pipe joint in the form of a raised belt to protect the drill pipe, isolate the drill pipe joint body from the casing wall or the well wall, and avoid direct contact and wear between the drill pipe and the casing wall or the well wall.

[0003] In the prior art, the welding of the wear-resistant belt mainly adopts a welding device, and an installation space for the horizontal setting of the rotating rod is set on the welding device. The drill rod joint is clamped by the driving structure on the welding device, and the driving structure drives the drill rod joint to rotate. At the same time, the welding structure drives the welding gun to perform annular welding on the outer peripheral surface of the drill rod joint. Because the drill rod joint has a certain length, the driving structure is clamped at one end of the drill rod joint, and the other end of the drill rod joint will form a cantilever structure. Due to its own torque, the axis will be slightly tilted, which will lead to the poor welding effect of the wear-resistant belt. In addition, the welding width of the wear-resistant belt is usually 75 to 85 mm, and the number of welding is 3 to 4, so the width of each pass is about 20 to 25 mm. For the welding of the wear-resistant belt, it is usually single-pass welding, that is, after the welding of the first wear-resistant belt is completed, the welding structure is moved, and then the next wear-resistant belt is welded. This welding method is inefficient and has poor practicality. Summary of the invention

[0004] In order to solve the technical problem that the existing drill pipe joint wear-resistant belt welding method has poor practicability due to low welding efficiency and poor welding effect, the present invention proposes a high-efficiency welding method for the drill pipe joint wear-resistant belt.

[0005] In a first aspect, an embodiment of the present invention provides an efficient welding method for a drill pipe joint wear-resistant belt, comprising the following steps:

[0006] Fix the drill rod joint, install the drill rod joint to be welded on the welding equipment, adjust the drill rod joint to be welded so that its axis is kept horizontal, and then connect the drill rod joint to be welded to the welding equipment with power;

[0007] Pre-welding preparation: clean and polish the welding area of ​​the drill pipe joint to be welded;

[0008] Aligning and adjusting the welding guns: two welding guns are arranged on the welding equipment, and the two welding guns are arranged at intervals along the axial direction of the drill rod joint to be welded, and each welding gun is adjusted so that each welding gun is arranged along the radial direction of the drill rod joint to be welded; and

[0009] For drilling rod joint welding, the welding equipment is turned on to rotate the drilling rod joint to be welded, and each welding gun is controlled to move to the welding area of ​​the drilling rod joint to be welded, and each welding gun is controlled to move downward to make the nozzle of each welding gun close to the surface of the drilling rod joint to be welded, and the wear-resistant belt is welded to the surface of the drilling rod joint to be welded as the drilling rod joint to be welded rotates.

[0010] In a possible implementation, in the pre-welding preparation step, a manual yarn wheel machine and a cup-shaped wire brush are used to polish the welding area of ​​the drill rod joint to be welded.

[0011] In a possible implementation, in the welding gun alignment adjustment step, the included angle between the two welding guns ranges from 85° to 95°.

[0012] In a possible implementation, in the drill rod joint welding step, when each welding gun is moved downward to be in welding operation, the distance between the nozzle of each welding gun and the surface of the drill rod joint to be welded ranges from 26 mm to 28.5 mm.

[0013] In a second aspect, an embodiment of the present invention provides a welding device, including a base, a clamping drive assembly, a supporting assembly, and a welding auxiliary assembly;

[0014] The top of the base has a first slide rail and a second slide rail arranged along the horizontal direction, the first slide rail and the second slide rail are parallel and spaced apart; the length direction of the first slide rail is set as the first direction;

[0015] The clamping drive assembly is fixed on the base and is located at one end of the first slide rail along the first direction. The clamping drive assembly has a chuck for clamping one end of a drill pipe joint to be welded;

[0016] At least two supporting assemblies are provided, each supporting assembly is used to support the drill rod joint to be welded, so that the axis of the drill rod joint to be welded is arranged horizontally;

[0017] The welding auxiliary component is slidably arranged on the second slide rail, and is used for installing two welding guns, adjusting the angles of the two welding guns, and driving and controlling the lifting and lowering of the two welding guns.

[0018] In a possible implementation, a horizontal direction perpendicular to the first direction is set as the second direction; the supporting assembly includes a first sliding base, a lifting seat, a limit slider, a flip rod, a push rod, a telescopic structure and a jack;

[0019] The first sliding base is slidably arranged on the first sliding rail; the lifting base is located above the first sliding base and is slidably connected to the first sliding base, and both ends of the first sliding base are respectively provided with mounting plates arranged along the vertical direction;

[0020] The limit slider is slidably arranged on the lifting seat along the vertical direction, a first roller is rotatably arranged at the top of the limit slider, two inclined portions are arranged on the limit slider, and the two inclined portions are respectively located on both sides of the first roller along the second direction, and a first wedge-shaped portion is also arranged on the limit slider, and the first wedge-shaped portion is located at the bottom end of the limit slider;

[0021] The two flip rods are respectively located at both sides of the first roller along the second direction and are respectively hinged to the top ends of the two mounting plates, and the hinge axis is arranged along the first direction, each flip rod has a first end and a second end of the flip rod, the hinge point of the flip rod is located between the first end and the second end of the flip rod, the first end of the flip rod is rotatably provided with an auxiliary wheel that is in rolling contact with one of the inclined portions, the second end of the flip rod is located above the first end of the flip rod, and the second end of the flip rod is rotatably provided with a second roller, the two flip rods are used to slide upward on the limit slider, and after the two inclined portions act on the two auxiliary wheels, the two second rollers are rotated to enable the two second rollers and the first roller to jointly support and clamp the drill pipe joint to be welded;

[0022] The push rod is slidably arranged in the lifting seat along the second direction, the first end of the push rod is provided with a second wedge-shaped portion adapted to the first wedge-shaped portion, and the push rod is used to push the limit sliding block to move upward;

[0023] The telescopic structure has a fixed end and a telescopic end, the fixed end of the telescopic structure is fixedly mounted on the first sliding base, and the telescopic end of the telescopic structure is slidably connected to the second end of the push rod along a vertical direction to drive the push rod to slide;

[0024] The jack has a fixed end and a telescopic end, the fixed end of the jack is fixed on the first sliding base, and the telescopic end of the jack extends along the vertical direction and abuts against the lifting seat, so as to adjust and fix the lifting position of the lifting seat;

[0025] The lifting seat is provided with a first sliding cavity for limiting sliding of the push rod, and a second sliding cavity for limiting sliding of the limiting sliding block, and the second sliding cavity is communicated with the first sliding cavity.

[0026] In a possible implementation manner, the axes of the first roller and each of the second rollers are arranged along the first direction.

[0027] In a possible implementation, the telescopic structure includes a hydraulic telescopic rod and a sliding block; the fixed end of the hydraulic telescopic rod is fixed on the first sliding base, and the extended end of the hydraulic telescopic rod extends along the second direction; the sliding block is slidably arranged on the first sliding base along the second direction and is connected to the telescopic end of the hydraulic telescopic rod, and the sliding block is provided with a sliding column arranged along the vertical direction;

[0028] Wherein, the second end of the push rod is provided with a through hole for the sliding column to pass through.

[0029] In a possible implementation, a plurality of columns are evenly distributed on the first sliding base, each of the columns is arranged along the vertical direction, and the bottom end of each of the columns is fixedly connected to the first sliding base; the lifting seat is provided with a plurality of positioning holes corresponding to each of the columns one by one and for sliding connection of each of the columns.

[0030] In a possible implementation, a horizontal direction perpendicular to the first direction is set as a second direction; the welding auxiliary assembly includes a second sliding base, a fixing frame, a sliding arm, a lead screw, a driver, a hanging member, and an adjusting fixing member;

[0031] The second sliding base is slidably arranged on the second sliding rail; the fixing frame is fixedly arranged on the second sliding base, and the fixing frame has a third sliding cavity arranged along the vertical direction;

[0032] The sliding arm is arranged along the second direction, and one end of the sliding arm is slidably arranged in the third sliding cavity along the vertical direction; the lead screw is rotatably arranged on the fixed frame along the vertical direction, and is spirally connected with the nut part arranged on the sliding arm to drive the sliding arm to move up and down;

[0033] The driver is fixed on the fixed frame, and the power output end is connected to the screw power;

[0034] The hanging piece is detachably connected to the sliding arm, and the hanging piece has a cross bar arranged along the second direction, the cross bar is located below the sliding arm, and the cross bar is provided with a long sliding opening penetrating along the first direction;

[0035] There are two adjusting fixing members, and both of them are detachably connected to the long slide. The two adjusting fixing members are respectively located at the two ends of the long slide and are staggered along the first direction, so as to respectively provide for the installation of two welding guns and adjust the angles of the welding guns.

[0036] One or more embodiments of the present invention bring at least the following beneficial effects:

[0037] The present invention can ensure that the axis of the drill rod joint to be welded is arranged horizontally by fixing the drill rod joint step, which can effectively ensure the welding effect of the wear-resistant belt. The welding effect of the wear-resistant belt can be further improved by the pre-welding preparation step. The welding gun is arranged along the radial direction of the drill rod joint to be welded by the welding gun alignment adjustment step, which can ensure the best welding effect. By installing two welding guns on the welding equipment, two wear-resistant belts can be welded at the same time, which can effectively improve the welding efficiency of the wear-resistant belt and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope.

[0039] Figure 1 A flow chart of a high-efficiency welding method for a drill pipe joint wear-resistant belt provided by an embodiment of the present invention;

[0040] Figure 2 Schematic diagram of the welding equipment structure used in the efficient welding method of the drill pipe joint wear-resistant belt provided in the embodiment of the present invention Figure 1 ;

[0041] Figure 3 Schematic diagram of the welding equipment structure used in the efficient welding method of the drill pipe joint wear-resistant belt provided in the embodiment of the present invention Figure 2 ;

[0042] Figure 4 A schematic structural diagram of a supporting assembly in a welding device used in a high-efficiency welding method for a drill pipe joint wear-resistant belt provided in an embodiment of the present invention;

[0043] Figure 5 A schematic cross-sectional view of a support assembly in a welding device used in a high-efficiency welding method for a drill pipe joint wear-resistant belt according to an embodiment of the present invention (with a welding gun);

[0044] Figure 6 A schematic structural diagram of a welding auxiliary component in a welding device used in a high-efficiency welding method for a drill pipe joint wear-resistant belt provided in an embodiment of the present invention;

[0045] Figure 7A schematic structural diagram of a hanger and an adjusting fixture in a welding device used in a high-efficiency welding method for a drill pipe joint wear-resistant belt provided in an embodiment of the present invention;

[0046] Description of reference numerals:

[0047] 10. Base; 11. First slide rail; 12. Second slide rail; 20. Clamping drive assembly; 30. Support assembly; 31. First sliding base; 311. Column; 32. Lifting seat; 321. First slide cavity; 322. Mounting plate; 323. Second slide cavity; 324. Positioning hole; 33. Limiting slider; 331. Inclined portion; 332. First wedge-shaped portion; 34. Turning rod; 341. Auxiliary wheel; 35. Push rod; 351. Second wedge-shaped portion; 36. Telescopic structure; 361. Hydraulic telescopic rod; 362. Sliding block; 363, sliding column; 37, jack; 38, first roller; 39, second roller; 40, welding auxiliary component; 41, second sliding base; 42, fixed frame; 43, sliding arm; 44, lead screw; 45, driver; 46, hanging piece; 461, first screw rod; 462, cross bar; 463, locking nut; 464, long slide; 47, adjusting fixture; 471, clamping ring; 472, second screw rod; 473, sleeve; 474, adjusting nut; 50, drill pipe joint; 60, welding gun. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0049] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] Please also read Figure 1 and Figure 2 The efficient welding method of the drill pipe joint wear-resistant belt provided by the present invention is now described. The efficient welding method of the drill pipe joint wear-resistant belt comprises the following steps:

[0051] S100: Fix the drill rod joint, install the drill rod joint 50 to be welded on the welding equipment, adjust the drill rod joint 50 to be welded so that its axis is kept horizontal, and then connect the drill rod joint 50 to be welded with the welding equipment.

[0052] S200: Preparation before welding: cleaning and polishing the welding area of ​​the drill pipe joint 50 to be welded.

[0053] S300: Align and adjust the welding guns. Two welding guns 60 are set on the welding equipment, and the two welding guns 60 are spaced apart along the axial direction of the drill rod joint 50 to be welded. Each welding gun 60 is adjusted so that each welding gun 60 is set along the radial direction of the drill rod joint 50 to be welded.

[0054] S400: Drill rod joint welding, start the welding equipment, rotate the drill rod joint 50 to be welded, control each welding gun 60 to move to the welding area of ​​the drill rod joint 50 to be welded, and control each welding gun 60 to move downward, so that the nozzle of each welding gun 60 is close to the surface of the drill rod joint 50 to be welded, and perform wear-resistant belt welding on the surface of the drill rod joint 50 to be welded as the drill rod joint 50 to be welded rotates.

[0055] Compared with the prior art, the efficient welding method of the drill rod joint wear belt provided in this embodiment can ensure that the axis of the drill rod joint 50 to be welded is arranged horizontally, which can effectively ensure the welding effect of the wear belt. The pre-welding preparation step can ensure the cleaning and polishing of the welding area of ​​the drill rod joint 50 to be welded, which can further improve the welding effect of the wear belt. Through the welding gun 60 alignment adjustment step, the welding gun 60 is arranged along the radial direction of the drill rod joint 50 to be welded, which can ensure the best welding effect. By installing two welding guns 60 on the welding equipment, two wear belts can be welded at the same time, which can effectively improve the welding efficiency of the wear belt, and has strong practicality.

[0056] In some embodiments, in the pre-welding preparation step, the polishing process uses a manual yarn wheel machine and a cup-type wire brush to polish the welding area of ​​the drill rod joint 50 to be welded.

[0057] To ensure that the drill pipe joint 50 can be successfully welded with the hardband, the welding surface of the hardband area needs to be cleaned before welding to ensure that the surface is clean and free of any foreign matter, such as dust, oil, paint or coating, etc. Use a manual grinder and a cup wire brush to fully clean the hardband welding surface to complete the polishing process.

[0058] In this embodiment, after the polishing work is completed, the drill rod joint 50 needs to be visually inspected.

[0059] In addition, it should be noted that in the pre-welding preparation step, the drill pipe joint 50 to be welded needs to be preheated. This technology is prior art and will not be described in detail here.

[0060] In some embodiments, see Figure 5 In the welding gun alignment adjustment step, the angle range of the two welding guns 60 is 85° to 95°. In this angle range, it can be ensured that the nozzles of the two welding guns 60 are both located at the upper half of the drill rod joint 50 to be welded. At the same time, it can also be ensured that the two welding guns 60 have a certain interval, which can ensure that the weld welded by the previous welding gun 60 can have a certain cooling time to prevent the weld temperature of the previous welding gun 60 from affecting the welding effect of the next welding gun 60 during the rotation welding process of the drill rod joint 50, thereby ensuring the overall welding effect.

[0061] In some embodiments, in the drill rod joint welding step, when each welding gun 60 descends to the welding operation, the distance between the nozzle of each welding gun 60 and the surface of the drill rod joint 50 to be welded ranges from 26 mm to 28.5 mm. If the nozzle of the welding gun 60 is too far away from the surface of the drill rod joint 50, it will affect the welding effect, and if the distance is less than 26 mm, it will cause the airflow in the nozzle cover of the welding gun 60 to be turbulent, thereby causing multiple pores in the weld.

[0062] In this embodiment, it is necessary to ensure that the two welding wires are fed to the two welding guns 60 through different wire feeding mechanisms, and when the drill pipe joint 50 rotates one circle, the two wear-resistant belt welding operations are completed simultaneously.

[0063] In some embodiments, the welding equipment can be used as follows Figures 2 to 3 See the structure shown. Figures 2 to 3 The welding equipment used includes a base 10, a clamping drive assembly 20, a supporting assembly 30 and a welding auxiliary assembly 40. The top of the base 10 has a first slide rail 11 and a second slide rail 12 arranged along the horizontal direction, and the first slide rail 11 and the second slide rail 12 are arranged in parallel and at intervals. The length direction of the first slide rail 11 is set as the first direction. The clamping drive assembly 20 is fixed on the base 10 and is located at one end of the first slide rail 11 along the first direction. The clamping drive assembly 20 has a chuck that can clamp one end of the drill rod joint 50 to be welded. There are at least two supporting assemblies 30, each of which can support the drill rod joint 50 to be welded so that the axis of the drill rod joint 50 to be welded is arranged horizontally. The welding auxiliary assembly 40 is slidably arranged on the second slide rail 12, and can be used to install two welding guns 60, adjust the angles of the two welding guns 60, and drive and control the lifting of the two welding guns 60.

[0064] The clamping drive assembly 20 disposed on the base 10 can be connected to one end of the drill rod joint 50, and can drive the drill rod joint 50 to rotate, which can ensure that the welding structure is annularly welded to the outer peripheral surface of the drill rod joint 50. Each supporting assembly 30 is slidably disposed on the first slide rail 11, and the position of each supporting assembly 30 can be adjusted by sliding to adapt to the length of the drill rod joint 50, and avoid interference with the welding structure. At the same time, the drill rod joint 50 can be horizontally supported to ensure the horizontal setting of the drill rod joint 50 to be welded, which can ensure the welding effect of the wear-resistant belt. The sliding connection between the welding auxiliary assembly 40 and the second slide rail 12 can ensure that the welding gun 60 is driven to perform welding work, thereby ensuring the welding effect of the wear-resistant belt on the drill rod joint 50, which is highly practical.

[0065] It should be noted that the clamping drive assembly 20 can be composed of a chassis, a chuck and a drive motor. The main thing is that the chuck can clamp the end of the drill pipe joint 50, and through the drive of the drive motor, the chuck can drive the drill pipe joint 50 to rotate. The chuck can be a three-jaw chuck. The clamping drive assembly 20 is a prior art and will not be repeated here.

[0066] In some embodiments, the supporting assembly 30 may be configured as follows: Figures 4 to 5 See the structure shown. Figures 4 to 5, and the horizontal direction perpendicular to the first direction is set as the second direction. The supporting assembly 30 includes a first sliding base 31, a lifting base 32, a limiting slider 33, a flip rod 34, a push rod 35, a telescopic structure 36 and a jack 37. The first sliding base 31 is slidably arranged on the first slide rail 11. The lifting base 32 is located above the first sliding base 31 and is slidably connected to the first sliding base 31. Both ends of the first sliding base 31 are respectively provided with mounting plates 322 arranged along the vertical direction. The limiting slider 33 is slidably arranged on the lifting base 32 along the vertical direction. The top end of the limiting slider 33 is rotatably provided with a first roller 38. The limiting slider 33 is provided with two inclined portions 331. The two inclined portions 331 are respectively located on both sides of the first roller 38 along the second direction. The limiting slider 33 is also provided with a first wedge-shaped portion 332. The first wedge-shaped portion 332 is located at the bottom end of the limiting slider 33. There are two flip rods 34, which are respectively located on both sides of the first roller 38 along the second direction and are respectively hinged to the top ends of the two mounting plates 322, and the hinge axis is arranged along the first direction, each flip rod 34 has a first end of the flip rod 34 and a second end of the flip rod 34, and the hinge point of the flip rod 34 is located between the first end of the flip rod 34 and the second end of the flip rod 34, and the first end of the flip rod 34 is rotatably provided with an auxiliary wheel 341 that is in rolling contact with one of the inclined portions 331, and the second end of the flip rod 34 is located above the first end of the flip rod 34, and the second end of the flip rod 34 is rotatably provided with a second roller 39, and the two flip rods 34 can slide upward on the limit slider 33, and after the two inclined portions 331 act on the two auxiliary wheels 341, they are pitched and rotated, so that the two second rollers 39 and the first roller 38 can jointly support and clamp the drill pipe joint 50 to be welded. The push rod 35 is slidably arranged in the lifting seat 32 along the second direction. The first end of the push rod 35 is provided with a second wedge-shaped portion 351 adapted to the first wedge-shaped portion 332. The push rod 35 can push the limit slider 33 to move upward. The telescopic structure 36 has a fixed end and a telescopic end. The fixed end of the telescopic structure 36 is fixed on the first sliding base 31. The telescopic end of the telescopic structure 36 slides and abuts against the second end of the push rod 35 along the vertical direction, which can drive the push rod 35 to slide. The jack 37 has a fixed end and a telescopic end. The fixed end of the jack 37 is fixed on the first sliding base 31. The telescopic end of the jack 37 extends along the vertical direction and is connected to the lifting seat 32, which can adjust and fix the lifting position of the lifting seat 32.

[0067] The lifting seat 32 is provided with a first sliding cavity 321 for limiting sliding of the push rod 35 , and a second sliding cavity 323 for limiting sliding of the limiting slider 33 , and the second sliding cavity 323 is communicated with the first sliding cavity 321 .

[0068] In this embodiment, the first sliding base 31 can be slidably arranged on the first slide rail 11 along the first direction, which can ensure the movement of the entire supporting assembly 30, thereby being able to adapt to drill rod joints 50 of different lengths, and avoiding interference with the welding auxiliary assembly 40. The telescopic structure 36 drives the push rod 35 to move. Through the adaptation of the first wedge-shaped portion 332 and the second wedge-shaped portion 351, the push rod 35 can drive the limit slider 33 to move upward. At this time, the two inclined portions 331 on the limit slider 33 will push the auxiliary wheels 341 to both sides, thereby causing the two flip rods 34 to pitch and rotate, and the two second rollers 39 to move relatively. The drill rod joint 50 is supported and clamped at the same time by the first roller 38 and the two second rollers 39. This structure is simple and has strong linkage, and can ensure the stability of the drill rod being supported and clamped.

[0069] Because the diameters of the drill rod joints 50 involved are different, they may be different types of drill rod joints 50, or the diameters of two sections of the same drill rod joint 50 are different, so it is also necessary to ensure that the first roller 38 and the second roller 39 can support and clamp drill rod joints 50 of different diameters or special drill rod joints. At this time, the lifting seat 32 is slidably connected with the first sliding base 31 in the vertical direction, and the height position of the lifting seat 32 can be adjusted by the jack 37 to ensure that the height position of the first roller 38 and the two second rollers 39 can be adjusted to ensure that drill rod joints 50 of different diameters can be adapted. Therefore, this structure has stronger adaptability, can ensure that it can adapt to different drill rod joints 50, and further ensure the welding effect of the wear-resistant belt.

[0070] During the specific operation, because both the first roller 38 and the two second rollers 39 will move, when adjusting the level of the drill rod joint 50, the drill rod joint 50 can be first brought into contact with the first roller 38, and then the drill rod joint 50 can be clamped by the telescopic structure 36, and then the drill rod structure can be lifted up by the jack 37, and the level of the drill rod joint 50 can be measured by a spirit level.

[0071] In this embodiment, the flip rod 34 is non-linear. In order to prevent the flip rod 34 from interfering with the drill rod structure during flipping, the flip rod 34 can be configured as an arched structure, such as Figure 5 shown.

[0072] It should be noted that a hinge seat for hinged connection of the flip rod 34 may be provided on the mounting plate 322 .

[0073] In some embodiments, the supporting assembly 30 may be configured as follows: Figure 5 See the structure shown. Figure 5The support assembly 30 also includes a torsion spring, two torsion springs are provided, and the two torsion springs are respectively provided in one-to-one correspondence with the two flip rods 34, each torsion spring is sleeved on the hinge shaft of the corresponding flip rod 34, and each torsion spring has two abutting ends, one of which abuts against the flip rod 34, and the other abuts against the mounting plate 322, and can drive the flip rod 34 to flip after the inclined surface 331 is separated from the auxiliary wheel 341, so that the two second rollers 39 move back to back. This structure can ensure that the flip rod 34 can be opened before the drill rod is put in or after the drill rod is taken out, so as to facilitate the insertion of the drill rod.

[0074] In some embodiments, the first roller 38 and the second rollers 39 may be Figure 4 See the structure shown. Figure 4 The axes of the first roller 38 and each second roller 39 are arranged along the first direction. This structure can ensure that the first roller 38 and the two second rollers 39 are in rolling contact with the drill rod joint 50, thereby ensuring the stable rotation of the drill rod joint 50 and ensuring the welding effect.

[0075] In some embodiments, the telescopic structure 36 may be configured as follows: Figure 4 See the structure shown. Figure 5 The telescopic structure 36 includes a hydraulic telescopic rod 361 and a sliding block 362. The fixed end of the hydraulic telescopic rod 361 is fixed on the first sliding base 31, and the extended end of the hydraulic telescopic rod 361 extends along the second direction. The sliding block 362 is slidably arranged on the first sliding base 31 along the second direction, and is connected to the telescopic end of the hydraulic telescopic rod 361. The sliding block 362 is provided with a sliding column 363 arranged along the vertical direction. Among them, the second end of the push rod 35 is provided with a through hole for the sliding column 363 to pass through. Because the lifting seat 32 needs to slide along the vertical direction, the sliding column 363 arranged on the sliding block 362 can ensure the vertical movement of the push rod 35, and can also ensure that the push rod 35 is pushed and pulled in the second direction. The structure is simple and practical. The hydraulic telescopic rod 361 is a prior art and will not be described here.

[0076] A sliding groove for limiting the sliding of the sliding block 362 may be provided on the first sliding base 31 .

[0077] In some embodiments, the first sliding base 31 may be Figures 4 to 5 See the structure shown. Figures 4 to 5 The first sliding base 31 is evenly distributed with a plurality of columns 311, each of which is arranged along the vertical direction, and the bottom end of each column 311 is fixedly connected to the first sliding base 31. The lifting base 32 is provided with a plurality of positioning holes 324 corresponding to each column 311 and for sliding connection of each column 311. The cooperation between each column 311 and each positioning hole 324 can ensure the vertical sliding guide of the lifting base 32, and the structure is simple and practical.

[0078] In some embodiments, the welding auxiliary component 40 can be used as follows: Figure 6 to Figure 7 See the structure shown. Figure 6 to Figure 7 , setting the horizontal direction perpendicular to the first direction as the second direction. The welding auxiliary assembly 40 includes a second sliding base 41, a fixed frame 42, a sliding arm 43, a lead screw 44, a driver 45, a hanger 46 and an adjustment fixture 47. The second sliding base 41 is slidably arranged on the second slide rail 12. The fixed frame 42 is fixed on the second sliding base 41, and the fixed frame 42 has a third sliding cavity arranged along the vertical direction. The sliding arm 43 is arranged along the second direction, and one end of the sliding arm 43 is slidably arranged in the third sliding cavity along the vertical direction. The lead screw 44 is rotatably arranged on the fixed frame 42 along the vertical direction, and is spirally connected with the nut part arranged on the sliding arm 43 to drive the sliding arm 43 to move up and down. The driver 45 is fixed on the fixed frame 42, and the power output end of the driver 45 is power-connected to the lead screw 44. The hanging member 46 is detachably connected to the sliding arm 43, and has a cross bar 462 arranged along the second direction, the cross bar 462 is located below the sliding arm 43, and a long sliding opening 464 is provided on the cross bar 462 and passes through along the first direction. Two adjusting fixing members 47 are provided, and both adjusting fixing members 47 are detachably connected to the long sliding opening 464. The two adjusting fixing members 47 are respectively located at the two ends of the long sliding opening 464, and are staggered along the first direction, so that two welding guns 60 can be installed respectively and the angles of the welding guns 60 can be adjusted.

[0079] The combination of the second sliding base 41 and the fixed frame 42 can drive the sliding arm 43 to move, so as to ensure the welding of the wear-resistant belts one by one. The driver 45 drives the lead screw 44 to rotate, and drives the sliding arm 43 to move up and down, so as to ensure the lifting and moving accuracy of the two welding guns 60 and the welding effect. The hanging member 46 is detachably connected to the second end of the sliding arm 43, which is convenient for the disassembly and assembly of the hanging member 46, and the cross bar 462 on the hanging member 46 can ensure the convenient installation of the two adjustment fixing members 47, and the long sliding mouth 464 can ensure the movement of the position of the adjustment fixing member 47. The adjustment fixing member 47 can ensure the installation of the welding gun 60, and at the same time can ensure the adjustment of the angle of the welding gun 60, which is highly practical.

[0080] In this embodiment, see Figure 7The hanger 46 may include a first screw rod 461, a cross bar 462 and a locking nut 463. The first screw rod 461 is arranged along the vertical direction and passes through the second end of the sliding arm 43; the cross bar 462 includes a first connecting rod portion, a second connecting rod portion and a broken line portion, the first connecting rod portion and the second connecting rod portion are both arranged along the second direction and are arranged at intervals along the first direction, the first connecting rod portion and the second connecting rod portion are respectively located on both sides of the first screw rod 461 along the second direction, the broken line portion is fixedly connected to the bottom end of the first screw rod 461, and the broken line portion is connected to the first connecting rod portion and the second connecting rod portion. The locking nut 463 is located above the sliding arm 43 and is threadedly connected to the first screw rod 461 to lock the first screw rod 461. Through the special-shaped setting of the cross bar 462, it can be ensured that the two welding guns 60 can have a smaller spacing distance to enhance adaptability.

[0081] In this embodiment, see Figure 7 Each adjusting fixture 47 may include a clamping ring 471, a second screw rod 472, a sleeve 473 and an adjusting nut 474. The clamping ring 471 can ensure the fixed installation of the welding gun 60. The first end of the second screw rod 472 is fixedly connected to the clamping ring 471, and the second end of the second screw rod 472 passes through the long strip slide 464. The sleeve 473 is sleeved on the second screw rod 472 and is located between the cross bar 462 and the clamping ring 471. It can mainly adjust the distance between the welding gun 60 and the cross bar 462 along the first direction. The sleeve 473 of different lengths can be replaced according to different wear-resistant belts to enhance adaptability. The adjusting nut 474 is threadedly connected to the second end of the second screw rod 472 passing through the long strip slide 464 to fix the angle of the welding gun 60 and the position in the long strip slide 464.

[0082] In the several embodiments provided in the embodiments of the present invention, it should be understood that the disclosed apparatus and method can also be implemented in other ways. The apparatus and method embodiments described above are merely illustrative.

[0083] It should be noted that, in this article, the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient welding method for drill pipe joint wear-resistant belt, characterized in that: The following steps are involved: Fix the drill rod joint, install the drill rod joint to be welded on the welding equipment, adjust the drill rod joint to be welded so that its axis is kept horizontal, and then connect the drill rod joint to be welded to the welding equipment with power; Pre-welding preparation: clean and polish the welding area of ​​the drill pipe joint to be welded; Aligning and adjusting the welding guns: two welding guns are arranged on the welding equipment, and the two welding guns are arranged at intervals along the axial direction of the drill rod joint to be welded, and each welding gun is adjusted so that each welding gun is arranged along the radial direction of the drill rod joint to be welded; and For drilling rod joint welding, the welding equipment is turned on to rotate the drilling rod joint to be welded, and each welding gun is controlled to move to the welding area of ​​the drilling rod joint to be welded, and each welding gun is controlled to move downward to make the nozzle of each welding gun close to the surface of the drilling rod joint to be welded, and the wear-resistant belt is welded to the surface of the drilling rod joint to be welded as the drilling rod joint to be welded rotates.

2. The high-efficiency welding method for the drill pipe joint wear-resistant belt according to claim 1, characterized in that: In the pre-welding preparation step, a manual yarn wheel machine and a cup-shaped wire brush are used to polish the welding area of ​​the drill pipe joint to be welded.

3. The high-efficiency welding method for the drill pipe joint wear-resistant belt according to claim 1, characterized in that: In the welding gun alignment adjustment step, the included angle range of the two welding guns is 85° to 95°.

4. The high-efficiency welding method for the drill pipe joint wear-resistant belt according to claim 1, characterized in that: In the drill rod joint welding step, when each welding gun is moved downward to be in welding operation, the distance between the nozzle of each welding gun and the surface of the drill rod joint to be welded ranges from 26 mm to 28.5 mm.

5. A welding device, characterized in that: It includes a base, a clamping drive assembly, a supporting assembly and a welding auxiliary assembly; The top of the base has a first slide rail and a second slide rail arranged along the horizontal direction, the first slide rail and the second slide rail are parallel and spaced apart; the length direction of the first slide rail is set as the first direction; The clamping drive assembly is fixed on the base and is located at one end of the first slide rail along the first direction. The clamping drive assembly has a chuck for clamping one end of a drill pipe joint to be welded; At least two supporting assemblies are provided, each supporting assembly is used to support the drill rod joint to be welded, so that the axis of the drill rod joint to be welded is arranged horizontally; The welding auxiliary component is slidably arranged on the second slide rail, and is used for installing two welding guns, adjusting the angles of the two welding guns, and driving and controlling the lifting and lowering of the two welding guns.

6. The welding device according to claim 5, characterized in that A horizontal direction perpendicular to the first direction is set as a second direction; the supporting assembly includes a first sliding base, a lifting seat, a limit slider, a flip rod, a push rod, a telescopic structure and a jack; The first sliding base is slidably arranged on the first sliding rail; the lifting base is located above the first sliding base and is slidably connected to the first sliding base, and both ends of the first sliding base are respectively provided with mounting plates arranged along the vertical direction; The limit slider is slidably arranged on the lifting seat along the vertical direction, a first roller is rotatably arranged at the top of the limit slider, two inclined portions are arranged on the limit slider, and the two inclined portions are respectively located on both sides of the first roller along the second direction, and a first wedge-shaped portion is also arranged on the limit slider, and the first wedge-shaped portion is located at the bottom end of the limit slider; The two flip rods are respectively located at both sides of the first roller along the second direction and are respectively hinged to the top ends of the two mounting plates, and the hinge axis is arranged along the first direction, each flip rod has a first end and a second end of the flip rod, the hinge point of the flip rod is located between the first end and the second end of the flip rod, the first end of the flip rod is rotatably provided with an auxiliary wheel that is in rolling contact with one of the inclined portions, the second end of the flip rod is located above the first end of the flip rod, and the second end of the flip rod is rotatably provided with a second roller, the two flip rods are used to slide upward on the limit slider, and after the two inclined portions act on the two auxiliary wheels, the two second rollers are rotated to enable the two second rollers and the first roller to jointly support and clamp the drill pipe joint to be welded; The push rod is slidably arranged in the lifting seat along the second direction, the first end of the push rod is provided with a second wedge-shaped portion adapted to the first wedge-shaped portion, and the push rod is used to push the limit sliding block to move upward; The telescopic structure has a fixed end and a telescopic end, the fixed end of the telescopic structure is fixedly mounted on the first sliding base, and the telescopic end of the telescopic structure is slidably connected to the second end of the push rod along a vertical direction to drive the push rod to slide; The jack has a fixed end and a telescopic end, the fixed end of the jack is fixed on the first sliding base, and the telescopic end of the jack extends along the vertical direction and abuts against the lifting seat, so as to adjust and fix the lifting position of the lifting seat; The lifting seat is provided with a first sliding cavity for limiting sliding of the push rod, and a second sliding cavity for limiting sliding of the limiting sliding block, and the second sliding cavity is communicated with the first sliding cavity.

7. The welding device according to claim 6, characterized in that The axes of the first roller and each of the second rollers are arranged along the first direction.

8. The welding device according to claim 6, characterized in that The telescopic structure comprises a hydraulic telescopic rod and a sliding block; the fixed end of the hydraulic telescopic rod is fixed on the first sliding base, and the extended end of the hydraulic telescopic rod extends along the second direction; the sliding block is slidably arranged on the first sliding base along the second direction and is connected to the telescopic end of the hydraulic telescopic rod, and the sliding block is provided with a sliding column arranged along the vertical direction; Wherein, the second end of the push rod is provided with a through hole for the sliding column to pass through.

9. The welding device according to claim 6, characterized in that The first sliding base is evenly distributed with a plurality of columns, each of which is arranged along the vertical direction, and the bottom end of each column is fixedly connected to the first sliding base; the lifting seat is provided with a plurality of positioning holes corresponding to each of the columns and for sliding connection of each of the columns.

10. The welding device according to claim 5, characterized in that The horizontal direction perpendicular to the first direction is set as the second direction; the welding auxiliary assembly includes a second sliding base, a fixing frame, a sliding arm, a lead screw, a driver, a hanging member and an adjusting fixing member; The second sliding base is slidably arranged on the second sliding rail; the fixing frame is fixedly arranged on the second sliding base, and the fixing frame has a third sliding cavity arranged along the vertical direction; The sliding arm is arranged along the second direction, and one end of the sliding arm is slidably arranged in the third sliding cavity along the vertical direction; the lead screw is rotatably arranged on the fixed frame along the vertical direction, and is spirally connected with the nut part arranged on the sliding arm to drive the sliding arm to move up and down; The driver is fixed on the fixed frame, and the power output end is connected to the screw power; The hanging piece is detachably connected to the sliding arm, and the hanging piece has a cross bar arranged along the second direction, the cross bar is located below the sliding arm, and the cross bar is provided with a long sliding opening penetrating along the first direction; There are two adjusting fixing members, and both of them are detachably connected to the long slide. The two adjusting fixing members are respectively located at the two ends of the long slide and are staggered along the first direction, so as to respectively provide for the installation of two welding guns and adjust the angles of the welding guns.

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