Automatic welding mechanism for crude oil heating cylinder

Abstract

The invention discloses an automatic welding mechanism for crude oil heating barrels, which comprises barrel lifting mechanisms, a slope cutting mechanism, a pressing and rotating mechanism, a splicing mechanism and a welding mechanism, a plurality of groups of barrel lifting mechanisms arranged side by side are arranged on the ground, the splicing mechanism is arranged between the barrel lifting mechanisms, and the welding mechanism is arranged between the barrel lifting mechanisms. Cylinder bodies are spliced through a splicing mechanism, a slope cutting mechanism is arranged between every two adjacent cylinder body lifting mechanisms, a pressing rotating mechanism is installed on the top of each cylinder body lifting mechanism, a horizontally-moving welding mechanism is arranged on one side of the multiple cylinder body lifting mechanisms, and welding between the cylinder bodies is achieved through the welding mechanisms. And in this way, automatic welding of the crude oil heating cylinder is achieved, and the efficiency is improved while the cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of advanced processing equipment, and in particular to an automatic welding mechanism for a crude oil heating cylinder. Background Art

[0002] The crude oil heating cylinder includes three sections: the feeding section, the heating section and the unloading section. The heating section is a long cylinder, which is formed by splicing multiple short cylinders. A track and a gear ring are welded on the circumferential outer wall of the heating section, and the heating section is subsequently rotated by the track and the gear ring. The above welding needs to ensure the coaxiality of the cylinder, the track and the gear ring, so as to ensure the subsequent installation and the stability of the heating section during rotation. When the company first took over the order for crude oil heating cylinders, it used manual welding. The crude oil cylinders were relatively large and could only be assembled by lifting them with a gantry truck. This had a low splicing efficiency and required manual welding, which resulted in low processing efficiency and high costs. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the prior art, the present invention proposes an automatic welding mechanism for a crude oil heating cylinder, which is convenient for clamping and positioning the crude oil heating cylinder, thereby realizing automatic welding of the crude oil heating cylinder, reducing costs while improving efficiency.

[0004] To achieve the above-mentioned purpose, the scheme of the present invention is: an automatic welding mechanism for a crude oil heating cylinder, comprising a cylinder lifting mechanism, a bevel cutting mechanism, a pressing and rotating mechanism, a splicing mechanism and a welding mechanism, wherein multiple groups of cylinder lifting mechanisms arranged side by side are arranged on the ground, a splicing mechanism is arranged between the cylinder lifting mechanisms, and the splicing between the cylinders is realized by the splicing mechanism, a bevel cutting mechanism is arranged between two adjacent groups of cylinder lifting mechanisms, a pressing and rotating mechanism is installed on the top of each group of cylinder lifting mechanisms, and a translational welding mechanism is arranged on one side of the multiple groups of cylinder lifting mechanisms, and the welding between the cylinders is realized by the welding mechanism; Two groups of track clamping mechanisms and gear ring clamping mechanisms are arranged on the ground. The gear ring clamping mechanism is located between the two groups of track clamping mechanisms. The track clamping mechanism and gear ring clamping mechanism are located between the two groups of cylinder lifting mechanisms.

[0005] Preferably, the cylinder lifting mechanism includes a bracket, a placement groove and a lifting roller. A semicircular placement groove is opened on the top of the bracket, and multiple groups of lifting rollers distributed in a circular array are installed on the inner wall of the placement groove. A telescopic rod is arranged between the lifting roller and the placement groove, and a linkage assembly is arranged between the multiple telescopic rods, and the telescopic rod can be extended and retracted by the linkage assembly; the pressing and rotating mechanism includes a swing frame and a rotating assembly. The swing frame is an L-shaped frame, one end of the swing frame is hinged on the outer wall of the side of the bracket, and a telescopic hydraulic cylinder is hinged between the swing frame and the bracket. A mounting seat that can be raised and lowered is installed below the swing frame, and a rotating assembly is installed at the bottom of the mounting seat.

[0006] Preferably, a lifting assembly is arranged between the mounting seat and the swing frame, and the rotating assembly includes three rotating rollers and a rotating belt, two rotating rollers are installed at the bottom of the mounting seat, and the other rotating roller is installed at the top of the mounting seat, and the rotating belts are sleeved on the three rotating rollers, and an elastic telescopic assembly is arranged between the two ends of the rotating roller at the top of the mounting seat and the mounting seat, and driven wheels are installed at both ends of the rotating roller, and a motor for driving the driven wheel to rotate is installed on the top of the mounting seat below the driven wheel, and a driving wheel meshing with the gear is installed on the output shaft of the motor.

[0007] Preferably, the track clamping mechanism and the gear ring clamping mechanism both include a clamping module and a translation assembly, there are two clamping modules and the two clamping modules are arranged opposite to each other, a translation assembly is installed between each clamping module and the ground, and the two clamping modules are closed by the translation assembly; the clamping module includes a moving seat, a clamping wheel and a concentric positioning assembly, the moving seat is arranged vertically, wherein a support arm is hinged on the inner side of the moving seat, a clamping wheel is installed at the other end of the support arm and on the inner side of the moving seat near the top, the clamping wheel installed on the moving seat is located in the same horizontal plane as the top surface of the bracket, and baffles are arranged on both sides of the clamping wheel. A hydraulic cylinder is arranged between the bottom of the support arm and the moving seat, and the support arm is lifted upward by the hydraulic cylinder. A concentric positioning assembly is installed on the moving seat, and a concentric positioning assembly is installed on the side of one end of the moving seat and the support arm for mounting the clamping wheel. The concentric positioning assembly installed on the moving seat is at the same height as the clamping wheel on the moving seat. The concentric positioning assembly includes a screw and a proximity switch. A threaded sleeve is installed on the side of one end of the support arm for mounting the clamping wheel, and a screw matching the thread of the threaded sleeve is inserted into the threaded sleeve. A proximity switch is installed on the top of the screw, and two groups of proximity switches are respectively connected to the translation assembly.

[0008] Preferably, the bevel cutting mechanism includes a lifting rod, a flame cutting nozzle and a slope adjustment assembly. A cylinder is arranged between the bottom of the lifting rod and the ground, and the lifting of the lifting rod is realized by the cylinder. The flame cutting nozzle is hinged at the top of the lifting rod, and a slope adjustment assembly is arranged between the flame cutting nozzle and the lifting rod.

[0009] Preferably, there are multiple groups of welding mechanisms and each group of welding mechanisms is located between two adjacent groups of cylinder lifting mechanisms. The welding mechanism is flush with the top surface of the bracket, and a horizontally reciprocating moving component is arranged between the welding mechanism and the ground; the welding mechanism includes a welding gun and a lifting component, one end of the lifting component is installed on the moving component, and a welding gun is installed at the other end of the lifting component, and an elastic buffer component is arranged between the welding gun and the lifting component.

[0010] Preferably, a grinding assembly is provided under the welding gun. The grinding assembly is a grinding wheel driven by a motor. The grinding wheel is mounted on a rotating arm through a bearing. The other end of the rotating arm is hinged to the moving assembly. The middle section of the rotating arm is hinged to the lifting assembly. When the lifting assembly retracts, the grinding wheel contacts the welding point of the outer wall of the heating cylinder.

[0011] Preferably, the splicing mechanism includes guide rails, sliding seats and closing components, wherein a plurality of guide rails arranged side by side are provided on the ground, a sliding seat is installed at the bottom of each group of cylinder lifting mechanisms, the bottom of the sliding seat is clamped on the guide rail for movement, a closing component is provided between two adjacent sliding seats, the closing component includes a closing rod, a slider, a screw rod and a guide rod, one end of the two closing rods is hinged to one of the sliding seats, a slider is hinged to the other end of each closing rod, a guide rod is provided on the other sliding seat, the guide rod passes through the slider, the slider slides on the guide rod, a screw rod driven by a motor is installed on the other sliding seat, a threaded cylinder is sleeved on the screw rod, the outer wall of the threaded cylinder is fixedly connected to the slider, and the separation and closing of the closing rod are realized by the screw rod.

[0012] Compared with the prior art, the present invention has the advantages of being easy to clamp and position the crude oil heating cylinder, thereby realizing automatic welding of the crude oil heating cylinder, reducing costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view of the present invention.

[0014] Figure 2 It is a cross-sectional view of the cylinder lifting mechanism of the present invention.

[0015] Figure 3 This is a schematic diagram of the bracket invented this year.

[0016] Figure 4 This is a schematic diagram of the press-and-rotate mechanism invented this year.

[0017] Figure 5 Schematic diagram of the bevel cutting mechanism of the present invention.

[0018] Figure 6 It is a schematic diagram of the track clamping mechanism and the gear ring clamping mechanism of the present invention.

[0019] Figure 7 It is a schematic diagram of the welding mechanism and grinding assembly of the present invention.

[0020] Among them, 1. Cylinder lifting mechanism, 2. Bracket, 3. Semicircular placement groove, 5. Lifting roller, 6. Telescopic rod, 7. Linkage assembly, 8. Bevel cutting mechanism, 9. Lifting rod, 10. Flame cutting nozzle, 11. Slope adjustment assembly, 12. Pressing and rotating mechanism, 13. Swinging frame, 14. Rotating assembly, 15. Rotating roller, 16. Rotating belt, 17. Elastic telescopic assembly, 18. Driven wheel, 19. Driving wheel, 20. Mounting seat, 21. Lifting assembly, 22. Splicing mechanism, 23. Welding mechanism, 24. Guide rail, 25, sliding seat, 26, closing assembly, 27, closing rod, 28, slider, 29, screw, 30, guide rod, 31, moving assembly, 32, welding gun, 33, elastic buffer assembly, 34, track clamping mechanism, 35, gear ring clamping mechanism, 36, clamping module, 37, moving seat, 38, clamping wheel, 39, concentric positioning assembly, 40, screw, 41, proximity switch, 42, support arm, 43, translation assembly, 44, baffle, 45, threaded sleeve, 47, grinding assembly, 48, rotating arm. DETAILED DESCRIPTION

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] like Figure 1-7 As shown, an automatic welding mechanism for a crude oil heating cylinder comprises a cylinder lifting mechanism 1, a bevel cutting mechanism 8, a pressing and rotating mechanism 12, a splicing mechanism 22 and a welding mechanism 23, wherein a plurality of cylinder lifting mechanisms 1 arranged side by side in a horizontal direction are arranged on the ground, and the cylinder lifting mechanisms 1 are moved on the ground, so that multiple sections of the cylinder are brought close to each other to realize the splicing of the multiple sections of the cylinder, and a splicing mechanism 22 is arranged between the cylinder lifting mechanisms 1, and the splicing between the cylinders is realized by the splicing mechanism 22, and the splicing is to close the ends of the cylinders at both ends, so as to realize the fixing of the cylinder, and a splicing mechanism 22 is arranged between two adjacent cylinder lifting mechanisms 1. A bevel cutting mechanism 8 is provided, and a bevel is cut out on the end surface of the cylinder splicing by the bevel cutting mechanism 8, and a welding groove is formed by splicing the bevel of the cylinder, so as to improve the welding strength and sealing performance. A pressing and rotating mechanism 12 is installed on the top of each group of cylinder lifting mechanisms 1, and the cylinder is pressed on the cylinder lifting mechanism 1 by the pressing and rotating mechanism 12 to lift it, and the cylinder placed on the cylinder lifting mechanism 1 is rotated by the pressing and rotating mechanism 12, so as to realize rotary welding. A translational welding mechanism 23 is provided on one side of the multiple groups of cylinder lifting mechanisms 1, and the welding after the splicing of the ends of the cylinders is realized by the welding mechanism 23; Two groups of track clamping mechanisms 34 and gear ring clamping mechanisms 35 are arranged on the ground, the gear ring clamping mechanism 35 is one group, and the track clamping mechanism 34 is two groups, the gear ring clamping mechanism 35 is located between the two groups of track clamping mechanisms 34, and each group of track clamping mechanisms 34 and gear ring clamping mechanisms 35 are respectively located between the two groups of cylinder lifting mechanisms 1. When working, each section of the cylinder is placed on the cylinder lifting mechanism 1, and the track and the gear ring are placed on the track clamping mechanism 34 and the gear ring clamping mechanism 35 respectively, so that the track and the gear ring are located between the two groups of cylinders. When the cylinders are closed, the track and the gear ring are sleeved on the corresponding cylinders, and then the track and the gear ring are welded to the cylinder for splicing processing.

[0023] The cylinder lifting mechanism 1 includes a bracket 2, a placement groove and a lifting roller 5. A semicircular placement groove 3 is opened on the top of the bracket 2. A plurality of lifting rollers distributed in a ring array are installed on the inner wall of the placement groove. A telescopic rod 6 is arranged between the lifting roller 5 and the placement groove. The lifting roller 5 is extended and retracted by the telescopic rod 6 (the telescopic rod 6 is a straight rod). In this way, the lifting roller 5 can be moved along the radius of the placement groove. A linkage component 7 is arranged between the plurality of telescopic rods 6. The linkage extension and retraction of the telescopic rod 6 is achieved by the linkage component 7. In this way, according to the radius of the cylinder, the linkage component 7 includes a clamping block and a linkage sheet, wherein a cavity is arranged in the bracket 2 and the cavity is located below the placement groove. Two clamping blocks arranged opposite to each other are arranged in the cavity. The outer portion of the clamping block is in contact with the inner wall of the cavity. The clamping block moves left and right in the cavity. The bottom of the telescopic rod 6 is respectively hinged to the two clamping blocks through linkage sheets. There are A hydraulic cylinder, a piston rod of the hydraulic cylinder extends into the cavity, and two connecting rods are hinged on the top of the piston rod of the hydraulic cylinder, and the other ends of the connecting rods are hinged on two clamping blocks respectively; the pressing and rotating mechanism 12 includes a swing frame 13 and a rotating assembly 14, the swing frame 13 is an L-shaped frame, one end of the swing frame 13 is hinged on the side outer wall of the bracket 2, and a telescopic hydraulic cylinder is hinged between the swing frame 13 and the bracket 2, and the two ends of the hydraulic cylinder are mounted on the swing frame 13 and the bracket 2 in a hinged manner, and a mounting seat 20 that can be lifted and lowered is installed below the swing frame 13, and a rotating assembly 14 is installed at the bottom of the mounting seat 20. The swing frame 13 is lifted by the hydraulic cylinder to press the mounting seat 20 on the outer wall of the top of the cylinder, thereby limiting the cylinder from jumping in the placement groove and avoiding misalignment of adjacent cylinders when docking. The rotating assembly 14 on the mounting seat 20 can drive the cylinder to rotate.

[0024] A lifting assembly 21 is provided between the mounting seat 20 and the swing frame 13. The lifting assembly 21 includes a height rod and a height hydraulic cylinder. A plurality of height rods are fixed on the top of the mounting seat 20 by welding. The height rods pass through the top of the swing frame 13 (the height rods slide on the swing frame 13). A height hydraulic cylinder is installed on the top of the swing frame 13 by bolting. The tops of the two height rods are fixed to the same flat plate. The piston rod of the height hydraulic cylinder is fixed to the top of the flat plate by bolts. The height of the mounting seat 20 is achieved by the height hydraulic cylinder. Rotation The assembly 14 includes three rotating rollers 15 and a rotating belt 16. Two rotating rollers 15 are installed at the bottom of the mounting seat 20 through bearings and bearing seats, and the other rotating roller 15 is installed at the top of the mounting seat 20 through bearings and bearing seats. The rotating belt 16 is sleeved on the three rotating rollers 15, and the rotating belt 16 is driven to move by the three rotating rollers 15. An elastic telescopic assembly 17 is arranged between the two ends of the rotating roller 15 at the top of the mounting seat 20 and the mounting seat 20, and the elastic telescopic assembly 17 is used to realize the rotation of the rotating roller 15. The lifting and retracting assembly 17 includes a telescopic sleeve rod and a spring. A vertical telescopic sleeve rod is installed by welding at the bottom of the bearing seat of the rotating roller 15 at the top of the mounting seat 20. The telescopic sleeve rod is two inner and outer rods nested inside and outside, so that the telescopic sleeve rod can be extended and retracted. A spring is sleeved on the telescopic sleeve rod against the top of the mounting seat 20 and the bottom of the bearing seat. A driven wheel 18 is fixed at both ends of the rotating roller 15 at the top of the mounting seat 20 by welding. A spring that drives the driven wheel 18 to rotate is installed at the top of the mounting seat 20 below the driven wheel 18 by bolts. The motor has a driving wheel 19 meshing with the gear installed on its output shaft by welding. When the mounting seat 20 descends, the conveyor belt between the rotating rollers 15 slowly bends upward and fits against the outer wall of the cylinder. The rotating rollers 15 are pressed against the outer wall of the cylinder. When the mounting seat 20 descends, the driven wheel 18 also descends accordingly. The driven wheel 18 meshes with the driving wheel 19, thereby driving the rotating roller 15 to rotate, so that the rotating belt 16 moves, and at the same time, the rotating belt 16 fits against the outer wall of the cylinder. When the rotating belt 16 moves, it drives the cylinder to rotate.

[0025] The track clamping mechanism 34 and the gear ring clamping mechanism 35 both include a clamping module 36 and a translation assembly 43. There are two clamping modules 36, and the two clamping modules 36 are arranged opposite to each other. A translation assembly 43 is installed between each clamping module 36 and the ground. The translation assembly 43 is a translation slider 28 and a translation slide rail. A longitudinal translation slide rail is arranged on the ground, and a translation slider 28 moving on the translation slide rail is clamped on the translation slide rail. A translation hydraulic cylinder is installed between the ground and the translation slider 28 by bolt fastening. The movement of the translation slider 28 is realized by the extension and contraction of the translation hydraulic cylinder, so that the clamping and loosening of the clamping module 36 are realized. The bottom of the clamping module 36 is fixed to the translation slider 28 by bolt fastening, and the two clamping modules 36 are closed and separated by the translation assembly 43.The clamping module 36 includes a moving seat 37, a clamping wheel 38 and a concentric positioning assembly 39. The moving seat 37 is vertically arranged, and the bottom of the moving seat 37 is fixed to the translation slider 28 by bolts, wherein a support arm 42 capable of swinging up and down is hingedly connected to the inner side of the moving seat 37, and a clamping wheel 38 is installed at the other end of the support arm 42 and the inner side of the moving seat 37 near the top through a bearing and a bearing seat. The clamping wheel 38 installed on the moving seat 37 is located at the same horizontal plane as the top surface of the bracket 2, and an annular baffle 44 is fixed on both sides of the clamping wheel 38 by welding. The baffles 44 on both sides clamp the slide rail and the gear ring on both sides. When the gear ring is welded, a circle needs to be placed on the outer circumference of the gear ring, which makes it easier for the clamping wheel 38 to clamp the gear ring. A hydraulic cylinder is provided between the bottom of the support arm 42 and the movable seat 37. The two ends of the hydraulic cylinder are respectively hinged to the bottom of the support arm 42 and the inner side of the movable seat 37. The support arm 42 is lifted upward by the hydraulic cylinder. In this way, the height of the clamping wheel 38 on the swing arm is adjusted according to the radius of the gear ring and the slide rail. The radius of the slide rail and the gear ring does not need to be changed, and the hydraulic cylinder does not need to be extended and retracted to realize the slide rail, the gear ring and the slide rail. The cylinder is coaxial, a concentric positioning assembly 39 is installed on the movable seat 37, a concentric positioning assembly 39 is installed on the side of one end of the movable seat 37 and the bracket 42 where the clamping wheel 38 is installed, the concentric positioning assembly 39 installed on the movable seat 37 is at the same height as the clamping wheel 38 on the movable seat 37, the concentric positioning assembly 39 includes a screw 40 and a proximity switch 41, a threaded sleeve 45 is installed on the side of one end of the bracket 42 where the clamping wheel 38 is installed, a screw 40 threadedly matched with the threaded sleeve 45 is inserted into the threaded sleeve 45, and a proximity switch is installed on the top of the screw 40 The two sets of proximity switches 41 are connected to the translation assembly 43 respectively. When the proximity switch 41 on the support arm 42 is triggered, it means that the slide rail and the gear ring are placed on the support arm 42, and the translation hydraulic cylinder pushes the moving seat 37 to move closer to each other, so that the slide rail and the gear ring slowly rise. When the proximity switch 41 on the moving seat 37 is triggered, the proximity switch 41 is connected to the PLC controller through a wire, the PLC controller is connected to the servo valve, the servo valve is connected to the translation hydraulic cylinder through a pipeline, and the translation hydraulic cylinder stops working, so that the slide rail, the gear ring and the cylinder are coaxial. ;

[0026] The bevel cutting mechanism 8 includes a lifting rod 9, a flame cutting nozzle 10 and a slope adjustment component 11. A cylinder is arranged between the bottom of the lifting rod 9 and the ground. The cylinder is installed on the ground by bolts. The lifting rod 9 is fixed on the piston rod of the cylinder by welding. The lifting of the lifting rod 9 is achieved by the extension and contraction of the cylinder. The flame cutting nozzle 10 is hinged on the top of the lifting rod 9, so that the flame cutting nozzle 10 can adjust the angle and cut out inclined surfaces of different slopes. A slope adjustment component is arranged between the rods 9. The slope adjustment component 11 is also a cylinder. The two ends of the slope adjustment component 11 are respectively hinged on the flame cutting nozzle 10 and the lifting rod 9. The angle deflection of the flame cutting nozzle 10 is achieved by the extension and retraction of the slope adjustment component 11, so that the cutting of inclined surfaces with different slopes can be achieved. When there is an inclined surface on the outer wall of the end of the cylinder, when the two end faces of the cylinder are butted, the inclined surface forms a welding groove, so that solder is filled in the welding groove to ensure the strength of the welding between the cylinders and increase the sealing performance.

[0027] The welding mechanism 23 is composed of multiple groups, and each group of welding mechanisms 23 is located between two adjacent groups of cylinder lifting mechanisms 1. The welding mechanism 23 is flush with the top surface of the bracket 2. A horizontally reciprocating moving component 31 is arranged between the welding mechanism 23 and the ground. The moving component 31 includes a moving track and a moving block. A moving track that moves left and right is installed on the ground by bolt fastening. A moving block that moves on the moving track is clamped on the moving track. The moving block and the welding mechanism 23 are fixed by bolt fastening. The welding mechanism 23 includes a welding gun 32 and a lifting component. The lifting component is a cylinder. One end of the lifting component is located at the bottom and is installed on the moving component 31 by bolt fastening. A welding gun 32 is hingedly mounted on the top of the lifting assembly, and the welding gun 32 can swing. An elastic buffer assembly 33 is arranged between the welding gun 32 and the lifting assembly. The elastic buffer assembly 33 is a spring sleeved on the telescopic rod 6. Both ends of the elastic buffer assembly 33 are hingedly mounted on the piston rods of the welding gun 32 and the lifting assembly. When welding is required, the lifting assembly is lifted, the welding pen is lifted, and the top of the welding pen is inserted into the welding groove. The lifting assembly continues to be lifted, and one end of the welding pen used for welding is pressed in the welding groove. Due to the action of the elastic buffer assembly 33, the welding pen will not be damaged. When the cylinder rotates, the welding pen welds the joint of the two cylinders.

[0028] A grinding assembly 47 is provided below the welding gun 32. The grinding assembly 47 is a grinding wheel driven by a motor. The grinding wheel is mounted on one end of a rotating arm 48 through a bearing. The other end of the rotating arm 48 is hinged on the moving assembly 31. The rotating arm 48 moves with the moving assembly 31. The middle section of the rotating arm 48 is hinged to the piston rod of the jacking assembly through a pull rod. When the jacking assembly retracts, the rotating arm 48 swings inward, so that the grinding wheel contacts the welding point of the outer wall of the heating tube. That is, after welding is completed, the welding point needs to be welded.

[0029] The splicing mechanism 22 includes a guide rail 24, a sliding seat 25 and a closing assembly 26, wherein a plurality of guide rails 24 arranged side by side are arranged on the ground, and the guide rails 24 are arranged horizontally. A sliding seat 25 is installed at the bottom of each group of cylinder lifting mechanism 1 by bolt fastening, and the bottom of the sliding seat 25 is clamped on the guide rail 24 for left and right movement. A closing assembly 26 is arranged between two adjacent sliding seats 25, and the two sliding seats 25 are brought closer to each other through the closing assembly 26. The closing assembly 26 includes a closing rod 27, a slider 28, a screw rod 29 and a guide rod 30. One end of the two closing rods 27 is hinged to one of the sliding seats 25 (each closing rod 27 is located on the front and rear sides of the bracket 2), and a slider is hinged at the other end of each closing rod 27 28. A guide rod is fixed on the sliding seat 25 opposite to the above-mentioned sliding seat 25 by welding, and the guide rod passes through the slider 28. The slider 28 slides on the guide rod. A screw rod 29 driven by a motor is installed on the sliding seat 25 with the guide rod installed (the screw rod 29 is a bidirectional screw rod 29, the screw rod 29 is parallel to the guide rod, and the motor housing is installed on the sliding seat 25 by bolt fastening), and a threaded barrel that matches the thread of the screw rod 29 is sleeved on the screw rod 29, and the outer wall of the threaded barrel is connected to the slider 28 by welding. The threaded sleeve 45 drives the slider 28 to move forward and backward when it moves forward and backward, and drives the closing rod 27 when the slider 28 moves up and down, and the separation and closing of the closing rod 27 are realized by the screw rod 29.

Claims

1. An automatic welding mechanism for a crude oil heating cylinder, comprising a cylinder lifting mechanism, a bevel cutting mechanism, a pressing and rotating mechanism, a splicing mechanism and a welding mechanism, wherein a plurality of sets of cylinder lifting mechanisms arranged side by side are arranged on the ground, characterized in that: A splicing mechanism is provided between the cylinder lifting mechanisms, and the splicing between the cylinders is realized through the splicing mechanism. A bevel cutting mechanism is provided between two sets of adjacent cylinder lifting mechanisms. A pressing and rotating mechanism is installed on the top of each set of cylinder lifting mechanisms. A translational welding mechanism is provided on one side of the multiple sets of cylinder lifting mechanisms, and the welding between the cylinders is realized through the welding mechanism. Two groups of track clamping mechanisms and gear ring clamping mechanisms are arranged on the ground. The gear ring clamping mechanism is located between the two groups of track clamping mechanisms. The track clamping mechanism and gear ring clamping mechanism are located between the two groups of cylinder lifting mechanisms.

2. The automatic welding mechanism for a crude oil heating cylinder according to claim 1 is characterized in that: The cylinder lifting mechanism includes a bracket, a placement groove and a lifting roller. A semicircular placement groove is opened on the top of the bracket, and multiple groups of lifting rollers distributed in a circular array are installed on the inner wall of the placement groove. A telescopic rod is arranged between the lifting roller and the placement groove, and a linkage component is arranged between the multiple telescopic rods. The telescopic rod can be extended and retracted by the linkage component; the pressing and rotating mechanism includes a swing frame and a rotating component. The swing frame is an L-shaped frame. One end of the swing frame is hinged on the outer wall of the side of the bracket. A telescopic hydraulic cylinder is hinged between the swing frame and the bracket. A mounting seat that can be raised and lowered is installed under the swing frame, and a rotating component is installed at the bottom of the mounting seat.

3. The automatic welding mechanism for a crude oil heating cylinder according to claim 1 is characterized in that: A lifting assembly is arranged between the mounting seat and the swing frame, and the rotating assembly includes three rotating rollers and a rotating belt. Two rotating rollers are installed at the bottom of the mounting seat, and the other rotating roller is installed at the top of the mounting seat. The rotating belts are sleeved on the three rotating rollers, and elastic telescopic assemblies are arranged between the two ends of the rotating roller at the top of the mounting seat and the mounting seat, and driven wheels are installed at both ends of the rotating roller. A motor for driving the driven wheel to rotate is installed on the top of the mounting seat below the driven wheel, and a driving wheel meshing with the gear is installed on the output shaft of the motor.

4. The automatic welding mechanism for a crude oil heating cylinder according to claim 3 is characterized in that: The track clamping mechanism and the gear ring clamping mechanism both include a clamping module and a translation assembly. There are two clamping modules and the two clamping modules are arranged opposite to each other. A translation assembly is installed between each clamping module and the ground, and the two clamping modules are closed by the translation assembly. The clamping module includes a moving seat, a clamping wheel and a concentric positioning assembly. The moving seat is vertically arranged, wherein a support arm is hinged on the inner side of the moving seat, and a clamping wheel is installed at the other end of the support arm and on the inner side of the moving seat near the top. The clamping wheel installed on the moving seat is located in the same horizontal plane as the top surface of the bracket, and baffles are arranged on both sides of the clamping wheel. A hydraulic cylinder is arranged between the bottom of the arm and the moving seat, and the arm is lifted upward by the hydraulic cylinder. A concentric positioning assembly is installed on the moving seat, and a concentric positioning assembly is installed on the side of one end of the moving seat and the supporting arm for mounting the clamping wheel. The concentric positioning assembly installed on the moving seat is at the same height as the clamping wheel on the moving seat. The concentric positioning assembly includes a screw and a proximity switch, and a threaded sleeve is installed on the side of one end of the supporting arm for mounting the clamping wheel, and a screw matching the thread of the threaded sleeve is inserted into the threaded sleeve, and a proximity switch is installed on the top of the screw, and the two groups of proximity switches are respectively connected to the translation assembly.

5. The automatic welding mechanism for a crude oil heating cylinder according to claim 4 is characterized in that: The bevel cutting mechanism includes a lifting rod, a flame cutting nozzle and a slope adjustment component. A cylinder is arranged between the bottom of the lifting rod and the ground, and the lifting of the lifting rod is realized by the cylinder. The flame cutting nozzle is hinged on the top of the lifting rod, and a slope adjustment component is arranged between the flame cutting nozzle and the lifting rod.

6. The automatic welding mechanism for a crude oil heating cylinder according to claim 5, characterized in that: There are multiple groups of welding mechanisms and each group of welding mechanisms is located between two adjacent groups of cylinder lifting mechanisms. The welding mechanism is flush with the top surface of the bracket, and a horizontally reciprocating moving component is arranged between the welding mechanism and the ground; the welding mechanism includes a welding gun and a lifting component, one end of the lifting component is installed on the moving component, and a welding gun is installed at the other end of the lifting component, and an elastic buffer component is arranged between the welding gun and the lifting component.

7. The automatic welding mechanism for a crude oil heating cylinder according to claim 6, characterized in that: A grinding assembly is provided under the welding gun. The grinding assembly is a grinding wheel driven by a motor. The grinding wheel is installed on a rotating arm through a bearing. The other end of the rotating arm is hinged to the moving assembly. The middle section of the rotating arm is hinged to the lifting assembly. When the lifting assembly retracts, the grinding wheel contacts the welding point of the outer wall of the heating cylinder.

8. The automatic welding mechanism for a crude oil heating cylinder according to claim 7, characterized in that: The splicing mechanism includes guide rails, sliding seats and closing components, wherein a plurality of guide rails arranged side by side are arranged on the ground, a sliding seat is installed at the bottom of each group of cylinder lifting mechanisms, and the bottom of the sliding seat is clamped on the guide rail for movement, and a closing component is arranged between two adjacent sliding seats, and the closing component includes a closing rod, a slider, a screw rod and a guide rod, one end of the two closing rods is hinged on one of the sliding seats, and a slider is hinged on the other end of each closing rod, and a guide rod is arranged on the other sliding seat, the guide rod passes through the slider, and the slider slides on the guide rod, and a screw rod driven by a motor is installed on the other sliding seat, a threaded cylinder is sleeved on the screw rod, and the outer wall of the threaded cylinder is fixed between the slider, and the separation and closing of the closing rod are realized by the screw rod.

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