Welding equipment special for inner pipe connection type heat insulation oil casing

Abstract

The invention relates to the technical field of pipe welding, and discloses special welding equipment for an inner pipe connection type heat insulation oil casing, which comprises a welding table, a pipeline clamping mechanism is arranged at the top of the welding table, and the pipeline clamping mechanism comprises two rotating rings. During oil pipe machining, two oil pipes penetrate through the fixing rings to be connected, the electric telescopic rods drive the V-shaped clamping plates to clamp the oil pipes, and the driving motors enable the supporting rollers to support the oil pipes through the gears and the lead screws. The adjusting motor is matched with a related structure, so that the grinding wheel and the arc-shaped grinding piece are attached to oil pipes with different diameters. The grinding motor and the rotating motor work cooperatively to comprehensively grind the oil pipe, during welding, the oil pipe rotates at a constant speed to achieve uniform welding, and after welding, the grinding wheel and the arc-shaped grinding piece clean weld joints. In addition, in the polishing process of the equipment, a cleaning brush is driven to clean a polishing part through transmission of a gear and a chain, the polishing and welding quality is guaranteed, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe welding, and more specifically to special welding equipment for inner-tube-connected heat-insulated oil casing. Background Art

[0002] Insulated oil casing is an important equipment used in the steam injection process of heavy oil wells. Its purpose is to serve as a steam injection channel to inject high-temperature, high-pressure steam into the well, protect the oil well casing and cement ring from thermal stress damage, reduce wellbore thermal loss, and improve steam injection oil production effect.

[0003] Before welding, the insulated oil casing needs to be polished at the welding position to prevent impurities such as oil, rust, burrs, and scale from interfering with the welding and affecting the welding quality. At the same time, the weld needs to be cleaned in time after welding to prevent corrosion and other phenomena during subsequent use, which will affect the performance. In the prior art, the staff usually polishes the surface of the oil pipe and cleans the weld. Not only is the polishing and cleaning effect poor, but there is also a certain height difference at the pipe connection position, which will produce a cleaning dead angle and is not convenient for cleaning operations. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a special welding device for inner-tube-connected heat-insulated oil casing to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a special welding device for inner tube connection type insulated oil casing, comprising a welding table, a pipe clamping mechanism is arranged on the top of the welding table, the pipe clamping mechanism comprises two rotating rings, the two rotating rings are symmetrically arranged above the welding table and connected to the rotating assembly, three mounting grooves are respectively provided on the inner walls of the circumferential sides of the two rotating rings, electric telescopic rods are fixedly installed in the six mounting grooves, and V-shaped clamping plates are fixedly installed on the output ends of the six electric telescopic rods, a U-shaped top plate is fixedly installed on the top of the welding table, a rectangular mounting plate and a U-shaped mounting plate are movably installed on the bottom inner wall of the U-shaped top plate through an adjusting mechanism, a welding mechanism is arranged on the rectangular mounting plate, a grinding mechanism is arranged on the U-shaped mounting plate, the welding mechanism and the grinding mechanism are symmetrically arranged, the grinding mechanism comprises a grinding wheel, and the U-shaped mounting plate has a groove in the inner wall. A first rectangular slot is provided, a rotating rod is rotatably installed on the inner wall of the side portion of the first rectangular slot, and the other end of the rotating rod passes through the inner wall of the side portion of the first rectangular slot and is rotatably installed on the inner wall of the side portion of the U-shaped mounting plate, the grinding wheel is fixedly sleeved on the rotating rod, and the side portion of the U-shaped mounting plate is fixedly installed with a grinding motor, the output shaft of the grinding motor is connected to one end of the rotating rod, and a circular plate is fixedly sleeved on the outer wall of the circumferential side of the rotating rod, the end of the circular plate is fixedly connected to the end of the grinding wheel, and a plurality of sliding grooves are provided on the outer wall of the circumferential side of the circular plate, and a plurality of limiting shafts are slidably installed in the plurality of sliding grooves, and arc-shaped grinding sheets are fixedly installed at the ends of the plurality of limiting shafts, and the plurality of arc-shaped grinding sheets are connected to the linkage assembly, and a cleaning mechanism is provided on the side portion of the U-shaped mounting plate, and the cleaning mechanism is used to synchronously clean the grinding wheel and a plurality of arc-shaped grinding sheets.

[0006] Preferably, the rotating assembly includes four support seats, and the four support seats are fixedly mounted on the top of the welding table, and two fixing rings are fixedly mounted on the four support seats, and the inner walls of the two fixing rings are provided with annular grooves, and the two rotating rings are rotatably mounted in the two annular grooves, and the inner walls of the two annular grooves are provided with annular holes, and the outer walls of the two rotating rings are fixedly mounted with first annular racks, wherein the sides of the two support seats are provided with transmission grooves, and the relative inner walls of the two transmission grooves are provided with circular holes, and rotating shafts are rotatably mounted in the four circular holes, and a rotating motor is fixedly mounted on the side of one of the support seats, and the output shaft of the rotating motor is connected to one end of the rotating shaft, and the outer wall of the peripheral side of the rotating shaft is fixedly sleeved with two rotating gears, and the two rotating gears are respectively meshed with the two first annular racks.

[0007] Preferably, a pipeline support mechanism is provided on the top of the welding table, and the pipeline support mechanism includes two square rods. Two square holes are provided on the top of the welding table. The two square rods are slidably installed in the two square holes respectively. The bottoms of the two square rods are fixedly installed with limited circular plates. The tops of the two square rods are fixedly installed with mounting seats. Two circular shafts are rotatably installed on the relative inner walls of the two mounting seats. The two circular shafts are symmetrically arranged, and the circumferential outer walls of the two circular shafts are fixedly sleeved with support rollers. The two square rods are connected by a lifting assembly.

[0008] Preferably, the lifting assembly includes a first bidirectional screw rod, a sliding hole is provided on the top of the welding table, two ends of the first bidirectional screw rod are respectively rotatably installed on the opposite inner walls of the sliding hole, a motor groove is provided on the side inner wall of the sliding hole, a driving motor is fixedly installed in the motor groove, the output shaft of the driving motor extends into the sliding hole and is fixedly sleeved with an active bevel gear, a driven bevel gear is fixedly sleeved on the peripheral outer wall of the first bidirectional screw rod, two square sliders are threadedly installed on the two first bidirectional screw rods, first connecting rods are rotatably installed on the tops of the two square sliders, and the other ends of the two first connecting rods are respectively rotatably installed on the opposite sides of the two square rods.

[0009] Preferably, the adjustment mechanism includes a rectangular frame, which is fixedly mounted on the bottom inner wall of the U-shaped top plate, and a second bidirectional screw is installed on the relative inner walls of the rectangular frame for common rotation, and an adjustment motor is fixedly mounted on the side of the rectangular frame, and the output shaft of the adjustment motor is connected to one end of the second bidirectional screw, and two slides are threadedly mounted on the second bidirectional screw, and the bottoms of the two slides are respectively fixedly connected to the tops of the rectangular mounting plate and the U-shaped mounting plate.

[0010] Preferably, the welding mechanism includes a welding gun, a mounting hole is opened on the side of the rectangular mounting plate, the welding gun is fixedly installed in the mounting hole, a welding cable is connected to the side of the welding gun, and the other end of the welding cable is connected to a power source.

[0011] Preferably, the linkage assembly includes a plurality of arc blocks, an annular cavity is provided in the grinding wheel, a plurality of sliding holes are provided on the side inner wall of the annular cavity, a plurality of the arc blocks are respectively slidably installed in the plurality of sliding holes, the sides of the plurality of arc blocks are respectively fixedly connected with the sides of the plurality of arc grinding sheets, a plurality of circular grooves are provided on the circumferential inner wall and the circumferential outer wall of the annular cavity, a plurality of screw rods are installed in the plurality of circular grooves for common rotation, a plurality of the arc blocks are respectively threadedly installed on the plurality of screw rods, a linkage bevel gear is fixedly sleeved on the circumferential outer wall of the plurality of screw rods, and the circumferential inner wall of the annular cavity A circular ring is rotatably installed, and an annular bevel rack is fixedly installed on the side of the circular ring, and the annular bevel rack is meshed with the multiple linked bevel gears. A control unit is provided on the circumferential outer wall of the circular ring, and arc grooves are opened on both sides of the multiple arc grinding sheets, and arc limiting rods are fixedly installed on the side inner walls of the multiple arc grooves. The circumferential outer walls of each two matching arc limiting rods are jointly slidably installed with an arc connecting plate, and the multiple arc connecting plates are respectively slidably installed in the multiple arc grooves, and the circumferential outer walls of the multiple arc grinding sheets and the circumferential outer walls of the grinding wheel are provided with grinding sandpaper.

[0012] Preferably, the control unit includes an adjusting gear, a mounting shaft is rotatably installed on the side inner wall of the annular cavity, the other end of the mounting shaft passes through the outside of the grinding wheel and is fixedly installed with a plum blossom knob, the adjusting gear is fixedly sleeved on the circumferential outer wall of the mounting shaft, a second annular rack is fixedly installed on the circumferential outer wall of the circular ring, the second annular rack is meshed with the adjusting gear, a fixing block is fixedly installed on the circumferential outer wall of the annular cavity, a threaded hole is jointly provided on the side of the fixing block and the circumferential outer wall of the grinding wheel, a limiting bolt is threadedly installed in the threaded hole, the end of the limiting bolt is fitted with the mounting shaft, and the circumferential outer wall of the grinding wheel is provided with an avoidance groove matched with the limiting bolt.

[0013] Preferably, the cleaning mechanism includes a cylinder, a U-shaped side plate is fixedly installed on the side of the U-shaped mounting plate, a second rectangular groove is opened on the side of the U-shaped side plate, one end of the cylinder is rotatably installed on the side inner wall of the second rectangular groove, the other end of the cylinder passes through the side inner wall of the second rectangular groove and is rotatably installed on the side inner wall of the U-shaped side plate, a linkage shaft is rotatably installed on the relative inner walls of the second rectangular groove, the rotating rod and the peripheral outer walls of the linkage shaft are fixedly sleeved with sprockets, and chains are meshingly installed on the two sprockets, a driving gear is fixedly sleeved on the peripheral outer wall of the linkage shaft, and a driven gear is fixedly sleeved on the peripheral outer wall of the cylinder, and the driven gear is meshingly installed with the driving gear.

[0014] Preferably, the cleaning mechanism also includes a plurality of first cleaning brushes and a plurality of second cleaning brushes, the circumferential outer wall of the cylinder is fixedly sleeved with a fixed sleeve, and the plurality of first cleaning brushes are fixedly mounted on the circumferential outer wall of the fixed sleeve, and the plurality of first cleaning brushes are in contact with the circumferential outer wall of the grinding wheel, a third bidirectional screw is rotatably mounted on the inner wall of the end portion of the cylinder, the other end of the third bidirectional screw penetrates through the outside of the U-shaped side plate and is fixedly mounted with a knob, two circular slides are threadedly mounted on the third bidirectional screw, a plurality of supporting holes are provided on the circumferential inner wall of the cylinder, and a plurality of second connecting rods are rotatably mounted at the ends of the two circular slides close to each other, and the plurality of second connecting rods are respectively movably arranged in the plurality of supporting holes, and a mounting plate is rotatably mounted together at the ends of each two matching second connecting rods, and the plurality of second cleaning brushes are respectively fixedly mounted on the sides of the plurality of mounting plates.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can make the grinding wheel and the arc-shaped grinding sheet fit the oil pipes of different diameters respectively by adjusting the motor, the bidirectional screw and other structures, and under the coordinated action of the grinding motor and the rotating motor, the oil pipe can rotate at a uniform speed, ensuring that the grinding wheel and the arc-shaped grinding sheet can fully grind the outer wall of the oil pipe circumference, avoiding the occurrence of grinding dead corners, greatly improving the efficiency and quality of grinding, and ensuring the flatness and smoothness of the oil pipe surface.

[0016] 2. In the present invention, after the oil pipe is rotated 180 degrees, the welding gun starts to weld the joint, and the uniform rotation of the oil pipe ensures the uniformity of welding and effectively improves the welding effect; after welding, the grinding wheel and the arc-shaped grinding sheet can clean the weld position in time to prevent subsequent corrosion and other problems, further improve the welding quality, and ensure the service life and safety of the oil pipe.

[0017] 3. In the present invention, when the grinding wheel and the arc-shaped grinding sheet rotate, the cylinder is driven to rotate in the opposite direction through the meshing action of the sprocket, the chain, the driving gear and the driven gear, so that the multiple first cleaning brushes and the second cleaning brushes rotate synchronously to clean the peripheral outer walls of the grinding wheel and the arc-shaped grinding sheet, so that they always maintain a good cleaning effect, avoid affecting the grinding quality due to residual impurities, and reduce equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the partial structure of the present invention Figure 1 (Partial section); Figure 3 for Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the partial structure of the present invention Figure 2 (Partial section); Figure 5 for Figure 4 The enlarged structural diagram at B in the middle; Figure 6 It is a structural schematic diagram of the present invention (partial cutaway); Figure 7 It is a schematic diagram of the partial structure of the present invention Figure 3 ; Figure 8 It is a schematic diagram of the partial structure of the present invention Figure 4 (Partial section); Fig. 9 It is a schematic diagram of the partial structure of the present invention Figure 5 (Partial section); Fig.10 It is a schematic diagram of the partial structure of the present invention Figure 6 (Partial section); Fig.11 It is a schematic diagram of the partial structure of the present invention Figure 7 (Partial section); Fig.12 It is a schematic diagram of the partial structure of the present invention Figure 8 ; Fig.13 It is a schematic diagram of the partial structure of the present invention Figure 9 (Partial section).

[0019] The accompanying drawings are marked as follows: 1, welding table; 2, U-shaped top plate; 3, square rod; 4, welding gun; 5, fixing ring; 6, square slider; 7, first bidirectional screw rod; 8, driving motor; 9, active bevel gear; 10, driven bevel gear; 11, first connecting rod; 12, mounting seat; 13, supporting roller; 14, supporting seat; 16, rotating ring; 17, electric telescopic rod; 18, V-shaped clamping plate; 19, rotating shaft; 20, rotating motor; 21, rotating gear; 22, first annular rack; 23, rectangular frame; 24, slide plate; 25, second bidirectional screw rod; 26, adjusting motor; 27, rectangular mounting plate; 28, U-shaped mounting plate; 29, U-shaped side plate; 30, grinding motor; 31, grinding wheel; 32 , circular plate; 33, screw; 34, arc block; 35, ring; 36, annular bevel rack; 37, linked bevel gear; 38, rotating rod; 39, second annular rack; 40, adjusting gear; 41, plum blossom knob; 42, fixing block; 43, limiting bolt; 44, cylinder; 45, sprocket; 46, chain; 47, linked shaft; 48, driving gear; 49, driven gear; 50, limiting shaft; 51, arc grinding sheet; 52, arc limiting rod; 53, arc connecting plate; 54, grinding sandpaper; 55, fixing sleeve; 56, first cleaning brush; 57, mounting plate; 58, second cleaning brush; 59, third bidirectional screw; 60, knob; 61, circular slide plate; 62, second connecting rod. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0021] Figure 1-Figure 13 The best embodiment of the present invention is shown below in conjunction with the attached Figure 1-Figure 13 The present invention is further described.

[0022] A special welding device for inner tube connection type heat-insulated oil casing comprises a welding platform 1, a pipe clamping mechanism is arranged on the top of the welding platform 1, the pipe clamping mechanism comprises two rotating rings 16, the two rotating rings 16 are symmetrically arranged above the welding platform 1 and connected through a rotating assembly, three mounting grooves are respectively provided on the inner walls of the circumferential sides of the two rotating rings 16, electric telescopic rods 17 are respectively fixedly installed in the six mounting grooves, and V-shaped clamping plates 18 are respectively fixedly installed on the output ends of the six electric telescopic rods 17, a U-shaped top plate 2 is fixedly installed on the top of the welding platform 1, a rectangular mounting plate 27 and a U-shaped mounting plate 28 are movably installed on the bottom inner wall of the U-shaped top plate 2 through an adjusting mechanism, a welding mechanism is arranged on the rectangular mounting plate 27, a grinding mechanism is arranged on the U-shaped mounting plate 28, the welding mechanism and the grinding mechanism are symmetrically arranged, the grinding mechanism comprises a grinding wheel 31, a first rectangular groove is provided in the U-shaped mounting plate 28, A rotating rod 38 is rotatably installed on the side inner wall of the first rectangular groove, and the other end of the rotating rod 38 passes through the side inner wall of the first rectangular groove and is rotatably installed on the side inner wall of the U-shaped mounting plate 28. The grinding wheel 31 is fixedly sleeved on the rotating rod 38, and a grinding motor 30 is fixedly installed on the side of the U-shaped mounting plate 28. The output shaft of the grinding motor 30 is connected to one end of the rotating rod 38, and a circular plate 32 is fixedly sleeved on the circumferential outer wall of the rotating rod 38. The end of the circular plate 32 is fixedly connected to the end of the grinding wheel 31. A plurality of sliding grooves are provided on the circumferential outer wall of the circular plate 32, and a limit shaft 50 is slidably installed in the plurality of sliding grooves. The ends of the plurality of limit shafts 50 are fixedly installed with arc-shaped grinding sheets 51, and the plurality of arc-shaped grinding sheets 51 are connected by a linkage component. A cleaning mechanism is provided on the side of the U-shaped mounting plate 28, and the cleaning mechanism is used to synchronously clean the grinding wheel 31 and the plurality of arc-shaped grinding sheets 51.

[0023] like Figure 4 and Figure 5As shown, the rotating assembly includes four support seats 14, and the four support seats 14 are fixedly installed on the top of the welding table 1. Two fixed rings 5 ​​are fixedly installed on the four support seats 14 respectively. The inner walls of the circumference of the two fixed rings 5 ​​are provided with annular grooves. Two rotating rings 16 are rotatably installed in the two annular grooves respectively. The inner walls of the circumference of the two annular grooves are provided with annular holes. The outer walls of the circumference of the two rotating rings 16 are fixedly installed with first annular racks 22, wherein the sides of the two support seats 14 are provided with transmission grooves, and the opposite inner walls of the two transmission grooves are provided with circular holes, and the four circular holes rotate together. A rotating shaft 19 is installed, and a rotating motor 20 is fixedly installed on the side of one of the support seats 14. The output shaft of the rotating motor 20 is connected to one end of the rotating shaft 19. Two rotating gears 21 are fixedly sleeved on the peripheral outer wall of the rotating shaft 19. The two rotating gears 21 are respectively meshed with two first annular racks 22 through annular holes. The rotating gears 21 are driven by the rotating shaft 19 to mesh with the first annular racks 22, so that the rotating ring 16, multiple electric telescopic rods 17, and multiple V-shaped clamps 18 can be rotated synchronously, driving the oil pipe to realize the rotation function, which is convenient for grinding and welding operations.

[0024] like Figure 2 and Figure 3 As shown, a pipeline support mechanism is provided on the top of the welding table 1, and the pipeline support mechanism includes two square rods 3. Two square holes are provided on the top of the welding table 1. The two square rods 3 are slidably installed in the two square holes respectively. The bottoms of the two square rods 3 are fixedly installed with limited circular plates. The tops of the two square rods 3 are fixedly installed with mounting seats 12. Two circular shafts are rotatably installed on the relative inner walls of the two mounting seats 12. The two circular shafts are symmetrically arranged. The outer walls of the circumferential sides of the two circular shafts are fixedly sleeved with support rollers 13. Specifically, the support rollers 13 located above the two mounting seats 12 have different diameters. The two square rods 3 are connected by a lifting assembly. The lifting assembly includes a first bidirectional screw rod 7. A sliding hole is provided on the top of the welding table 1. The two ends of the first bidirectional screw rod 7 are rotatably mounted on the relative inner walls of the sliding hole, and a motor groove is opened on the inner wall of the side of the sliding hole. A driving motor 8 is fixedly installed in the motor groove. The output shaft of the driving motor 8 extends into the sliding hole and is fixedly sleeved with an active bevel gear 9. The outer wall of the peripheral side of the first bidirectional screw rod 7 is fixedly sleeved with a driven bevel gear 10. Two square sliders 6 are threadedly mounted on the first bidirectional screw rod 7. The tops of the two square sliders 6 are rotatably mounted with first connecting rods 11. The other ends of the two first connecting rods 11 are rotatably mounted on the relative sides of the two square rods 3. The two mounting seats 12 and multiple support rollers 13 are driven by the two square rods 3 to move upward synchronously, which can support the oil pipe and prevent bending.

[0025] like Figure 6As shown, the adjusting mechanism includes a rectangular frame 23, which is fixedly mounted on the bottom inner wall of the U-shaped top plate 2, and a second bidirectional screw rod 25 is installed on the relative inner walls of the rectangular frame 23 for common rotation. An adjusting motor 26 is fixedly installed on the side of the rectangular frame 23, and the output shaft of the adjusting motor 26 is connected to one end of the second bidirectional screw rod 25. Two slide plates 24 are threadedly mounted on the second bidirectional screw rod 25, and the bottoms of the two slide plates 24 are respectively fixedly connected to the tops of the rectangular mounting plate 27 and the U-shaped mounting plate 28. Through the arrangement of the second bidirectional screw rod 25, when the adjusting motor 26 drives the second bidirectional screw rod 25 to rotate, the two slide plates 24 can be driven to move toward each other synchronously through the action of the thread, thereby driving the welding mechanism and the grinding mechanism to move synchronously to appropriate positions.

[0026] like Figure 1 As shown, the welding mechanism includes a welding gun 4, a mounting hole is opened on the side of the rectangular mounting plate 27, the welding gun 4 is fixedly installed in the mounting hole, a welding cable is connected to the side of the welding gun 4, and the other end of the welding cable is connected to the power supply. By fixing the welding gun 4 on the rectangular mounting plate 27, the position of the rectangular mounting plate 27 and the welding gun 4 can be adjusted by rotating the second bidirectional screw 25.

[0027] like Figure 8 and Fig.11 As shown, the linkage assembly includes a plurality of arc blocks 34, an annular cavity is provided in the grinding wheel 31, a plurality of sliding holes are provided on the side inner wall of the annular cavity, a plurality of arc blocks 34 are respectively slidably installed in the plurality of sliding holes, the sides of the plurality of arc blocks 34 are respectively fixedly connected with the sides of the plurality of arc grinding sheets 51, a plurality of circular grooves are provided on the circumferential inner wall and the circumferential outer wall of the annular cavity, a plurality of screw rods 33 are rotatably installed in the plurality of circular grooves, a plurality of arc blocks 34 are respectively threadedly installed on the plurality of screw rods 33, a linkage bevel gear 37 is fixedly sleeved on the circumferential outer wall of the plurality of screw rods 33, a circular ring 35 is rotatably installed on the circumferential inner wall of the annular cavity, an annular bevel rack 36 is fixedly installed on the side of the circular ring 35, the annular bevel rack 36 is meshed and installed with the plurality of linkage bevel gears 37, and the annular bevel rack 36 and the plurality of linkage bevel gears are meshed and installed. The setting of 37 enables that when the circular ring 35 drives the annular bevel rack 36 to rotate, the multiple screws 33 can be driven to rotate through the meshing action, so that the positions of the multiple arc blocks 34 can be adjusted synchronously, so as to adjust the positions of the multiple arc grinding plates 51, which is convenient for grinding oil pipes with different diameters. A control unit is provided on the circumferential outer wall of the circular ring 35, and arc grooves are provided on both sides of the multiple arc grinding plates 51. The side inner walls of the multiple arc grooves are fixedly installed with arc limiting rods 52, and the circumferential outer walls of each of the two matching arc limiting rods 52 are jointly slidably installed with an arc connecting plate 53, and the multiple arc connecting plates 53 are respectively slidably installed in the multiple arc grooves, and the circumferential outer walls of the multiple arc grinding plates 51 and the circumferential outer walls of the grinding wheel 31 are provided with grinding sandpaper 54.

[0028] like Fig. 9 As shown, the control unit includes an adjusting gear 40, a mounting shaft is rotatably mounted on the inner wall of the side of the annular cavity, the other end of the mounting shaft passes through the outside of the grinding wheel 31 and is fixedly mounted with a plum blossom knob 41, the adjusting gear 40 is fixedly sleeved on the outer wall of the peripheral side of the mounting shaft, a second annular rack 39 is fixedly mounted on the outer wall of the peripheral side of the ring 35, the second annular rack 39 is meshed with the adjusting gear 40, a fixing block 42 is fixedly mounted on the outer wall of the peripheral side of the annular cavity, and the side of the fixing block 42 and the outer wall of the peripheral side of the grinding wheel 31 are jointly provided with a screw The threaded hole has a limit bolt 43 installed in the threaded hole, and the end of the limit bolt 43 fits with the installation shaft. The outer wall of the peripheral side of the grinding wheel 31 is provided with an avoidance groove adapted to the limit bolt 43. By adjusting the meshing action of the gear 40 and the second annular rack 39, when the plum blossom knob 41 is rotated, the ring 35 can be driven to rotate synchronously, thereby realizing the adjustment of the position of the multiple arc blocks 34, and through the setting of the limit bolt 43, the installation shaft can be limited to prevent it from rotating at will.

[0029] like Fig.10 As shown, the cleaning mechanism includes a cylinder 44, a U-shaped side plate 29 is fixedly installed on the side of the U-shaped mounting plate 28, a second rectangular groove is opened on the side of the U-shaped side plate 29, one end of the cylinder 44 is rotatably installed on the side inner wall of the second rectangular groove, the other end of the cylinder 44 passes through the side inner wall of the second rectangular groove and is rotatably installed on the side inner wall of the U-shaped side plate 29, and a linkage shaft 47 is rotatably installed on the relative inner wall of the second rectangular groove, and the outer wall of the peripheral side of the rotating rod 38 and the linkage shaft 47 are fixed. A sprocket 45 is fixedly sleeved, and a chain 46 is meshedly installed on the two sprockets 45. A driving gear 48 is fixedly sleeved on the peripheral outer wall of the linkage shaft 47, and a driven gear 49 is fixedly sleeved on the peripheral outer wall of the cylinder 44. The driven gear 49 is meshed and installed with the driving gear 48. Through the transmission effect of the two sprockets 45, the chain 46, the driving gear 48 and the driven gear 49, when the rotating rod 38 rotates, it can drive the cylinder 44 to rotate synchronously, thereby realizing the automatic cleaning function.

[0030] like Fig.12 and Fig.13As shown, the cleaning mechanism also includes a plurality of first cleaning brushes 56 and a plurality of second cleaning brushes 58. The peripheral outer wall of the cylinder 44 is fixedly sleeved with a fixed sleeve 55. The plurality of first cleaning brushes 56 are fixedly mounted on the peripheral outer wall of the fixed sleeve 55. The plurality of first cleaning brushes 56 are all fitted with the peripheral outer wall of the grinding wheel 31. A third bidirectional screw 59 is rotatably mounted on the inner wall of the end of the cylinder 44. The other end of the third bidirectional screw 59 passes through the outside of the U-shaped side plate 29 and is fixedly mounted with a knob 60. Two circular slides 61 are threadedly mounted on the third bidirectional screw 59. A plurality of supporting holes are provided on the peripheral inner wall of the cylinder 44. The two circular slides The ends of the plates 61 that are close to each other are rotatably installed with multiple second connecting rods 62, and the multiple second connecting rods 62 are movably arranged in multiple supporting holes respectively. The ends of each two matching second connecting rods 62 are rotatably installed with a mounting plate 57, and multiple second cleaning brushes 58 are fixedly installed on the sides of the multiple mounting plates 57 respectively. Through the arrangement of multiple first cleaning brushes 56 and multiple second cleaning brushes 58, the peripheral outer walls of the grinding wheel 31 and the arc-shaped grinding sheet 51 can be cleaned, and by adjusting the distance between the second cleaning brush 58 and the axis center, the arc-shaped grinding sheet 51 at different positions can be cleaned, thereby improving the continuous cleaning ability.

[0031] The working principle and use process of the present invention are as follows: when in use, two oil pipes are respectively passed through two fixing rings 5 ​​and connected, and multiple electric telescopic rods 17 are started to drive multiple V-shaped clamping plates 18 to move synchronously toward the axis to clamp the two oil pipes respectively, and then the driving motor 8 is started to drive the active bevel gear 9 to rotate, and then through the meshing action with the driven bevel gear 10, the first bidirectional screw rod 7 is driven to rotate, and under the action of the thread, the two square sliders 6 are driven to move synchronously in opposite directions, and through the connection action of the two first connecting rods 11, the two square rods 3 drive the two mounting seats 12 and the four support rollers 13 to move upward synchronously, thereby realizing the support function of the two pipes.

[0032] Starting the adjusting motor 26 drives the second bidirectional screw 25 to rotate, and the two slide plates 24 are driven to move toward each other synchronously through the action of the thread, thereby driving the rectangular mounting plate 27 and the U-shaped mounting plate 28 to move toward each other synchronously, so that the grinding wheel 31 fits against the outer wall of the pipe with a larger diameter, and then releases the limit bolt 43 on the mounting shaft, and rotates the plum blossom knob 41 to drive the mounting shaft and the adjusting gear 40 to rotate, thereby driving the circular ring 35 and the annular bevel rack 36 to rotate synchronously through the meshing action with the second annular rack 39, thereby driving the multiple screws 33 to rotate synchronously through the meshing action of the annular bevel rack 36 and the multiple linked bevel gears 37, and under the action of the thread, driving the multiple arc blocks 34 to move synchronously away from the axis, thereby driving the multiple arc grinding sheets 51 to move synchronously, so that the outer wall of the arc grinding sheet 51 fits against the outer wall of the oil pipe with a smaller diameter.

[0033] The knob 60 is turned to drive the third bidirectional screw 59 to rotate, and the two circular slides 61 are driven to move synchronously toward each other through the action of the thread, and the multiple mounting plates 57 and the multiple second cleaning brushes 58 are driven to move synchronously through the connection of the multiple second connecting rods 62, so that the second cleaning brushes 58 fit the peripheral outer wall of the arc-shaped grinding sheet 51. The grinding motor 30 is started to drive the rotating rod 38 to rotate, thereby driving the grinding wheel 31, the circular plate 32, and the multiple arc-shaped grinding sheets 51 to rotate synchronously, and the peripheral outer walls of the two oil pipes are polished. During the polishing process, the rotating motor 20 is started to drive the rotating shaft 19 to rotate, thereby driving the two rotating gears 21 to rotate synchronously, and through the meshing action of the two rotating gears 21 and the two first annular racks 22, the two rotating rings 16, the multiple electric telescopic rods 17, and the two oil pipes are driven to rotate synchronously, so that the grinding wheel 31 and the multiple arc-shaped grinding sheets 51 can fully polish the peripheral outer walls of the two oil pipes, and the polishing effect is good.

[0034] When the oil pipe rotates 180 degrees, the welding gun 4 is started to weld the joint, and as the oil pipe rotates at a constant speed, the oil pipe can be welded evenly, effectively improving the welding effect. After the oil pipe is welded, the welding position can be cleaned in time by the grinding wheel 31 and the plurality of arc-shaped grinding sheets 51, effectively improving the welding quality and preventing the subsequent corrosion and the like.

[0035] When the grinding wheel 31 and the multiple arc-shaped grinding sheets 51 are rotating, the rotating rod 38 can drive the linkage shaft 47 to rotate synchronously under the meshing action of the two sprockets 45 and the chain 46, and then drive the cylinder 44 to rotate in the opposite direction under the meshing action of the driving gear 48 and the driven gear 49. When the cylinder 44 rotates, it can drive the multiple first cleaning brushes 56 and the multiple second cleaning brushes 58 to rotate synchronously, thereby cleaning the peripheral outer walls of the grinding wheel 31 and the multiple arc-shaped grinding sheets 51, so that the grinding wheel 31 and the multiple arc-shaped grinding sheets 51 can always maintain a good cleaning effect.

[0036] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A special welding device for inner tube connection type heat-insulated oil casing, comprising a welding table (1), characterized in that: The top of the welding table (1) is provided with a pipe clamping mechanism, the pipe clamping mechanism comprising two rotating rings (16), the two rotating rings (16) being symmetrically arranged above the welding table (1) and connected to the rotating assembly, the inner walls of the circumferential sides of the two rotating rings (16) being provided with three mounting grooves, the six mounting grooves being fixedly provided with electric telescopic rods (17), the output ends of the six electric telescopic rods (17) being fixedly provided with V-shaped clamping plates (18), the top of the welding table (1) being fixedly provided with a U-shaped top plate (2), the bottom inner wall of the U-shaped top plate (2) being movably provided with a rectangular mounting plate (27) and a U-shaped mounting plate (28) through an adjusting mechanism, the rectangular mounting plate (27) being provided with a welding mechanism, the U-shaped mounting plate (28) being provided with a grinding mechanism, the welding mechanism and the grinding mechanism being symmetrically arranged, the grinding mechanism comprising a grinding wheel (31), the U-shaped mounting plate (28) being provided with a first rectangular groove, the side inner wall of the first rectangular groove being rotatably provided with a rotating rod (31) 8), the other end of the rotating rod (38) passes through the side inner wall of the first rectangular groove and is rotatably mounted on the side inner wall of the U-shaped mounting plate (28), the grinding wheel (31) is fixedly sleeved on the rotating rod (38), a grinding motor (30) is fixedly mounted on the side of the U-shaped mounting plate (28), the output shaft of the grinding motor (30) is connected to one end of the rotating rod (38), a circular plate (32) is fixedly sleeved on the peripheral outer wall of the rotating rod (38), and the end of the circular plate (32) The circular plate (32) is fixedly connected to the end of the grinding wheel (31), and a plurality of sliding grooves are provided on the outer wall of the circumferential side of the circular plate (32). A limiting shaft (50) is slidably installed in each of the plurality of sliding grooves. An arc-shaped grinding sheet (51) is fixedly installed at the end of each of the plurality of limiting shafts (50). Each of the plurality of arc-shaped grinding sheets (51) is connected to a linkage component. A cleaning mechanism is provided on the side of the U-shaped mounting plate (28), and the cleaning mechanism is used to synchronously clean the grinding wheel (31) and the plurality of arc-shaped grinding sheets (51).

2. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 1 is characterized by: The rotating assembly comprises four support seats (14), the four support seats (14) are fixedly mounted on the top of the welding table (1), two fixed rings (5) are fixedly mounted on the four support seats (14), the inner walls of the two fixed rings (5) are provided with annular grooves, the two rotating rings (16) are rotatably mounted in the two annular grooves, the inner walls of the two annular grooves are provided with annular holes, the outer walls of the two rotating rings (16) are fixedly mounted with first annular racks (22), two of which are The side of the support seat (14) is provided with a transmission groove, and the inner walls opposite to each other of the two transmission grooves are provided with a circular hole, and a rotating shaft (19) is rotatably mounted in the four circular holes, and a rotating motor (20) is fixedly mounted on the side of one of the support seats (14), and the output shaft of the rotating motor (20) is connected to one end of the rotating shaft (19), and two rotating gears (21) are fixedly sleeved on the outer wall of the circumference of the rotating shaft (19), and the two rotating gears (21) are respectively meshed and mounted with the two first annular racks (22).

3. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 1 is characterized by: A pipeline support mechanism is arranged on the top of the welding platform (1), and the pipeline support mechanism comprises two square rods (3). Two square holes are provided on the top of the welding platform (1). The two square rods (3) are slidably mounted in the two square holes respectively. A limiting circular plate is fixedly mounted on the bottom of the two square rods (3). A mounting seat (12) is fixedly mounted on the top of the two square rods (3). Two circular shafts are rotatably mounted on the relative inner walls of the two mounting seats (12). The two circular shafts are symmetrically arranged. Support rollers (13) are fixedly sleeved on the circumferential outer walls of the two circular shafts. The two square rods (3) are connected via a lifting assembly.

4. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 3 is characterized by: The lifting assembly comprises a first bidirectional screw rod (7), a sliding hole is provided at the top of the welding table (1), two ends of the first bidirectional screw rod (7) are rotatably mounted on opposite inner walls of the sliding hole, a motor slot is provided on the inner wall of the side of the sliding hole, a driving motor (8) is fixedly mounted in the motor slot, an output shaft of the driving motor (8) extends into the sliding hole and is fixedly sleeved with a driving bevel gear (9), a driven bevel gear (10) is fixedly sleeved on the outer wall of the circumference of the first bidirectional screw rod (7), two square sliders (6) are threadedly mounted on the two first bidirectional screw rods (7), the tops of the two square sliders (6) are both rotatably mounted with first connecting rods (11), and the other ends of the two first connecting rods (11) are rotatably mounted on opposite side portions of the two square rods (3).

5. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 1 is characterized by: The adjustment mechanism comprises a rectangular frame (23), the rectangular frame (23) being fixedly mounted on the bottom inner wall of the U-shaped top plate (2), a second bidirectional screw rod (25) being mounted on the inner wall opposite to the rectangular frame (23) for co-rotation, an adjustment motor (26) being fixedly mounted on the side of the rectangular frame (23), an output shaft of the adjustment motor (26) being connected to one end of the second bidirectional screw rod (25), two slide plates (24) being threadedly mounted on the second bidirectional screw rod (25), the bottoms of the two slide plates (24) being fixedly connected to the tops of the rectangular mounting plate (27) and the U-shaped mounting plate (28), respectively.

6. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 1 is characterized by: The welding mechanism comprises a welding gun (4), a mounting hole is provided on the side of the rectangular mounting plate (27), the welding gun (4) is fixedly mounted in the mounting hole, a welding cable is connected to the side of the welding gun (4), and the other end of the welding cable is connected to a power source.

7. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 1 is characterized by: The linkage assembly comprises a plurality of arc blocks (34), an annular cavity is provided in the grinding wheel (31), a plurality of sliding holes are provided on the side inner wall of the annular cavity, the plurality of arc blocks (34) are respectively slidably mounted in the plurality of sliding holes, the sides of the plurality of arc blocks (34) are respectively fixedly connected to the sides of the plurality of arc grinding sheets (51), the circumferential inner wall and the circumferential outer wall of the annular cavity are both provided with a plurality of circular grooves, a plurality of screw rods (33) are rotatably mounted in the plurality of circular grooves, the plurality of arc blocks (34) are respectively threadedly mounted on the plurality of screw rods (33), the circumferential outer walls of the plurality of screw rods (33) are all fixedly sleeved with linkage bevel gears (37), and a circular ring (35) is rotatably mounted on the circumferential inner wall of the annular cavity. ), an annular bevel rack (36) is fixedly mounted on the side of the circular ring (35), and the annular bevel rack (36) is meshed with the plurality of linked bevel gears (37). A control unit is arranged on the circumferential outer wall of the circular ring (35). Both sides of the plurality of arc-shaped grinding sheets (51) are provided with arc-shaped grooves, and the inner walls of the sides of the plurality of arc-shaped grooves are fixedly mounted with arc-shaped limiting rods (52). The circumferential outer walls of each of the two matching arc-shaped limiting rods (52) are slidably mounted with an arc-shaped connecting plate (53), and the plurality of arc-shaped connecting plates (53) are slidably mounted in the plurality of arc-shaped grooves, respectively. The circumferential outer walls of the plurality of arc-shaped grinding sheets (51) and the circumferential outer walls of the grinding wheel (31) are both provided with grinding sandpaper (54).

8. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 7 is characterized by: The control unit comprises an adjusting gear (40), a mounting shaft is rotatably mounted on the inner wall of the side of the annular cavity, the other end of the mounting shaft passes through the outside of the grinding wheel (31) and is fixedly mounted with a plum blossom knob (41), the adjusting gear (40) is fixedly sleeved on the circumferential outer wall of the mounting shaft, a second annular rack (39) is fixedly mounted on the circumferential outer wall of the circular ring (35), the second annular rack (39) is meshedly mounted with the adjusting gear (40), a fixing block (42) is fixedly mounted on the circumferential outer wall of the annular cavity, a threaded hole is provided on the side of the fixing block (42) and the circumferential outer wall of the grinding wheel (31), a limiting bolt (43) is threadedly mounted in the threaded hole, the end of the limiting bolt (43) is in contact with the mounting shaft, and an avoidance groove matched with the limiting bolt (43) is provided on the circumferential outer wall of the grinding wheel (31).

9. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 1 is characterized by: The cleaning mechanism comprises a cylinder (44), a U-shaped side plate (29) is fixedly mounted on the side of the U-shaped mounting plate (28), a second rectangular groove is opened on the side of the U-shaped side plate (29), one end of the cylinder (44) is rotatably mounted on the inner wall of the side of the second rectangular groove, the other end of the cylinder (44) penetrates the inner wall of the side of the second rectangular groove and is rotatably mounted on the inner wall of the side of the U-shaped side plate (29), a linkage shaft (47) is rotatably mounted on the opposite inner wall of the second rectangular groove, a sprocket (45) is fixedly sleeved on the peripheral outer wall of the rotating rod (38) and the linkage shaft (47), a chain (46) is meshingly mounted on the two sprockets (45), a driving gear (48) is fixedly sleeved on the peripheral outer wall of the linkage shaft (47), a driven gear (49) is fixedly sleeved on the peripheral outer wall of the cylinder (44), and the driven gear (49) is meshingly mounted with the driving gear (48).

10. The inner tube connection type heat-insulated oil casing special welding equipment according to claim 9, characterized in that: The cleaning mechanism further comprises a plurality of first cleaning brushes (56) and a plurality of second cleaning brushes (58); the peripheral outer wall of the cylinder (44) is fixedly sleeved with a fixed sleeve (55); the plurality of first cleaning brushes (56) are fixedly mounted on the peripheral outer wall of the fixed sleeve (55); the plurality of first cleaning brushes (56) are in contact with the peripheral outer wall of the grinding wheel (31); a third bidirectional screw (59) is rotatably mounted on the inner wall of the end of the cylinder (44); the other end of the third bidirectional screw (59) passes through the outside of the U-shaped side plate (29) and is fixedly mounted thereon. A knob (60), two circular slides (61) are threadedly mounted on the third bidirectional screw (59), a plurality of supporting holes are provided on the circumferential inner wall of the cylinder (44), a plurality of second connecting rods (62) are rotatably mounted on the ends of the two circular slides (61) close to each other, the plurality of second connecting rods (62) are movably arranged in the plurality of supporting holes, and a mounting plate (57) is rotatably mounted on the ends of each two matching second connecting rods (62), and a plurality of second cleaning brushes (58) are fixedly mounted on the sides of the plurality of mounting plates (57).

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