Portable large-diameter pipeline automatic welding or cutting device

Abstract

The invention discloses a portable automatic welding or cutting device for a large-diameter pipeline, and relates to the technical field of pipeline welding. Most existing pipeline welding equipment is table type equipment which is large in size, heavy in weight and incapable of being used for on-site construction of long-distance pipelines. Portable pipeline welding equipment on the market is not suitable for large-scale popularization due to imperfect products or high price, and mostly adopts manual welding at present. By using the device, the supporting frame and the rotating tool rest on the device can be quickly assembled and disassembled on a construction site, and the supporting frame and the rotating tool rest can be used for cutting and welding a pipeline on site by unlocking the main lock unit, disassembling the supporting frame into two semi-ring supporting frame units and disassembling the rotating tool rest into two semi-ring tool rest units; each supporting leg can stretch out and draw back, so that pipelines with different pipe diameters can be clamped; the gun car is convenient to disassemble and assemble. The device is suitable for field cutting and welding operation of large-diameter pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding, and in particular to a portable large-diameter pipeline automatic welding or cutting device. Background Art

[0002] During long-distance pipeline construction, manual welding is slow and quality assurance is difficult, especially for large-diameter pipes, due to the lack of heavy equipment on-site. Currently, the automated welding and cutting equipment on the market is primarily desktop, equipped with a pipe turning machine for automatic welding. Small pipe welders are primarily capable of on-site automated welding, and are only suitable for relatively small pipes. One type of pipe welding equipment imported from Germany boasts automated welding capabilities and high precision, but its disadvantages are that different pipes require different rails, making installation complex and expensive.

[0003] In summary, existing pipeline welding devices are generally desktop equipment. Due to their large size, they are generally used for factory processing and are inconvenient to carry. The field laying of long-distance pipelines requires an automated equipment that is light and simple, easy to carry and install, and can automatically cut and weld, in order to ensure the quality and consistency of the pipeline welding process, improve construction efficiency, reduce labor intensity and personal injury to construction workers. Summary of the Invention

[0004] The present invention aims to solve the problem of automated on-site welding of long-distance pipelines. Existing long-distance pipeline welding equipment is either not very perfect in performance, or is expensive and cumbersome to operate. This patent proposes a portable large-diameter pipe automatic welding or cutting device.

[0005] The present invention is a portable large-diameter pipe automatic welding or cutting device, which comprises a support frame 1, a rotating tool holder 2, a main locking unit 3, a support leg 4, a drive unit 5 and a gun carriage 6;

[0006] A rotating tool holder 2 is provided on the upper end surface of the support frame 1, and the rotating tool holder 2 is rotatably connected to the support frame 1. The support frame 1 is composed of two semi-ring support units 1-1, and the two semi-ring support units 1-1 have the same mechanical structure. The rotating tool holder 2 is composed of two semi-ring tool holder units 2-1, and the two semi-ring tool holder units 2-1 have the same mechanical structure. The ends of the two semi-ring support units 1-1 and the ends of the two semi-ring tool holder units 2-1 are locked and connected by a main locking unit 3. The support frame 1 is evenly provided with four support legs 4 along the circumferential direction. A driving unit 5 is provided between the two support legs 4 on one of the semi-ring support units 1-1 of the support frame 1, and a gun carriage 6 is provided on the outer surface of the rotating tool holder 2;

[0007] Furthermore, the semi-ring support unit 1-1 includes a semi-ring support, a shaft 1-1-1, a bearing 1-1-2, a connecting lock rod 1-1-3, a lock ball 1-1-4, a guide pin 1-1-6, a spring 1-1-7, a support leg support 1-1-8 and a driving gear 1-1-9;

[0008] The semi-ring bracket is evenly provided with two support leg supports 1-1-8 along the circumferential direction, and the upper end surface of the semi-ring bracket is provided with at least three shaft rods 1-1-1 along the circumferential direction, and the top end of the shaft rod 1-1-1 is inserted into the inner ring of the bearing 1-1-2. A blind hole is provided on the side of each shaft rod 1-1-1 on the upper end surface of the semi-ring bracket, and a connecting lock rod 1-1-3 is provided inside the blind hole. Two through holes are processed on the inner wall of the blind hole, one of which is provided with a guide pin 1-1-6, and the other is provided with a lock rod 1-1-3. Bead 1-1-4, a guide pin groove 1-1-3-1 is machined on the upper portion of the outer surface of the connecting lock rod 1-1-3, an annular groove 1-1-3-2 is machined along the circumferential direction on the lower portion of the outer surface of the connecting lock rod 1-1-3, a spring cavity 1-1-3-4 is machined in the center of the bottom surface of the connecting lock rod 1-1-3, a spring 1-1-7 is arranged inside the spring cavity 1-1-3-4, a keyhole 1-1-3-3 is machined on the top end of the connecting lock rod 1-1-3, and a driving gear 1-1-9 is provided in the middle of the upper end surface of the semi-ring bracket;

[0009] Furthermore, a plugging head 1-1-5 is provided at the top of each blind hole on the upper end surface of the semi-ring bracket;

[0010] Furthermore, the driving unit 5 includes a rotary tool holder motor 5-1, a control cable connector 5-2, a sensor bracket 5-3, a counting grating 5-4 and a photoelectric sensor 5-5;

[0011] A sensor bracket 5-3 is provided at the top of the rotary tool holder motor 5-1, and a counting grating 5-4 and a photoelectric sensor 5-5 are provided on the sensor bracket 5-3 in sequence. A control cable connector 5-2 is provided on the outer surface of the rotary tool holder motor 5-1. The control cable connector 5-2 is used to connect to an external computer to control the driving state of the rotary tool holder motor 5-1. The control cable connector 5-2 is also used to establish communication between the counting grating 5-4 and the photoelectric sensor 5-5 and the external computer. The output end of the rotary tool holder motor 5-1 is fixedly connected to the center hole of the drive gear 1-1-9.

[0012] Furthermore, the semi-ring tool holder unit 2-1 includes a semi-ring tool holder, a gear ring 2-1-1 and a ball groove 2-1-2; the inner wall of the ring groove of the semi-ring tool holder is processed with a ball groove 2-1-2 along the circumferential direction, the upper part of the inner wall of the ring groove of the semi-ring tool holder is provided with a gear ring 2-1-1, the ring groove on the semi-ring tool holder is in rolling connection with the outer ring of the top bearing 1-1-2 of the shaft 1-1-1 on the semi-ring bracket, the gear ring 2-1-1 on the semi-ring tool holder is meshed and connected with the driving gear 1-1-9 on the semi-ring bracket, and the semi-ring tool holder unit 2-1 is locked and connected with the semi-ring bracket unit 1-1 by a connecting locking rod 1-1-3;

[0013] Furthermore, a gun carriage support 2-2-3 is provided on the outer circumferential surface of one of the half-ring tool holder units 2-1 in the rotating tool holder 2;

[0014] Furthermore, the main lock unit 3 includes a lock tongue 3-1 and a lock body 3-2, the lock tongue 3-1 and the lock body 3-2 are cooperatively connected, and a lock tongue 3-1 is respectively installed at the end of one half-ring bracket unit 1-1 and the end of the half-ring tool holder unit 2-1, and a lock body 3-2 is respectively installed at the end of the other half-ring bracket unit 1-1 and the end of the half-ring tool holder unit 2-1;

[0015] Furthermore, the lock tongue 3-1 includes a lock tongue housing, a lock tongue guide shaft 3-1-2 and a lock tongue guide bearing 3-1-3; the lock tongue housing is provided with a lock tongue guide shaft 3-1-2, the lock tongue guide shaft 3-1-2 is provided with a lock tongue guide bearing 3-1-3, and the lock tongue housing is processed with a lock tongue hole 3-1-1;

[0016] Furthermore, the lock body 3-2 includes a lock body housing, a lock bolt 3-2-1, a lock block assembly 3-2-2, a latch assembly 3-2-3, a lock bolt spring 3-2-4, a lock bolt plug 3-2-5, a lock block limit pin 3-2-8 and a latch support bearing track 3-2-9;

[0017] A lock tongue groove is machined in the middle of the lock body shell, and a lock tongue guide groove 3-2-7 is machined on the upper part of the lock tongue groove to guide the lock tongue guide bearing 3-1-3 to enter, and a lock block groove is machined at the lower part of the lock tongue groove. A lock latch lifting bearing track 3-2-9 and a lock latch cavity are machined on one side of the lock block groove. A through hole is provided on one side of the lock block groove, and a lock block limiting pin 3-2-8 passes through the through hole and the lock block limiting groove 3-2-2-3 and is fixed to the lock body shell for slidingly limiting the lock block assembly 3-2-2. The lock latch assembly 3-2-3 is provided with a through hole. The latch assembly 3-2-3 is placed in the side latch cavity of the lock block assembly 3-2-2. The latch assembly 3-2-3 rotates in the latch cavity around the latch shaft of the latch assembly 3-2-3. The latch shaft is fixed to the lock body housing. A countersunk through hole is machined on one side of the lock body housing. A lock bolt 3-2-1 is installed inside the countersunk through hole. A lock bolt spring 3-2-4 is sleeved on the lock bolt 3-2-1. A lock bolt plug 3-2-5 is embedded in the top of the countersunk through hole in the lock body housing. A lock keyhole 3-2-6 is machined along the countersunk through hole on the other side of the lock body housing.

[0018] Furthermore, the locking block assembly 3-2-2 includes a locking block housing, a latch lifting bearing 3-2-2-1, a latch lifting shaft 3-2-2-2 and a locking block spring 3-2-2-4;

[0019] The lock block housing is provided with a latch lifting shaft 3-2-2-2, and the latch lifting shaft 3-2-2-2 is provided with a latch lifting bearing 3-2-2-1. Two lock block springs 3-2-2-4 are evenly arranged along the width direction on one side of the lock block housing. The ends of the lock block springs 3-2-2-4 contact the inner wall of the lock body housing. A lock block limiting groove 3-2-2-3 is processed on the lock block housing, and the lock block limiting groove 3-2-2-3 is matched with the lock block limiting pin 3-2-8.

[0020] Furthermore, the latch assembly 3-2-3 includes a latch shaft 3-2-3-1, a latch rotation bearing 3-2-3-2, a leaf spring 3-2-3-3 and a latch 3-2-3-4;

[0021] The latch 3-2-3-4 is provided with a leaf spring 3-2-3-3 along the end surface of the long side, and a latch shaft 3-2-3-1 is provided at one end of the front side of the latch 3-2-3-4. The latch shaft 3-2-3-1 is provided with a latch rotation bearing 3-2-3-2.

[0022] Furthermore, the support leg 4 includes a roller frame 4-1, a roller 4-2, a linear bearing support 4-3, a nut inner sleeve 4-4, a nut outer sleeve 4-5, a main spring 4-6, a linear bearing 4-7, a lead screw 4-8, a lead screw nut 4-9, a support bearing 4-11, a clutch spring 4-12, a lower clutch 4-13, an upper clutch linear bearing 4-16, an upper clutch 4-17, a screw outer sleeve 4-18, a button 4-19, a button linear bearing 4-20, a button spring 4-21 and a support leg housing 4-23;

[0023] The support leg housing 4-23 is cylindrical and tubular, and a nut sleeve 4-5 is provided at one end of the interior of the support leg housing 4-23, and a linear bearing 4-7 is provided between the outer surface of the nut sleeve 4-5 and the inner wall of the support leg housing 4-23. A plurality of grooves are processed on the inner wall of the support leg housing 4-23 and the outer wall of the nut sleeve 4-5 respectively along the circumferential direction, and the outer side of the linear bearing 4-7 ball rolls in the groove on the support leg housing 4-23, and the inner side of the linear bearing 4-7 ball is in the groove on the nut sleeve 4-5. A linear bearing support 4-3 is provided on the inner wall of one end of the support leg housing 4-23, and the linear bearing The end of 4-7 is axially limited by the inner wall of the linear bearing support 4-3 and the support leg housing 4-23, the end of the nut outer sleeve 4-5 is provided with a roller frame 4-1, and the roller frame 4-1 is provided with a roller 4-2. The interior of the nut outer sleeve 4-5 is provided with a nut inner sleeve 4-4, and the end of the nut inner sleeve 4-4 passes through the end of the nut outer sleeve 4-5 and is fixedly connected to the bottom surface of the roller frame 4-1, and the main spring 4-6 is provided on the nut inner sleeve 4-4. A screw nut 4-9 is embedded in one end of the nut inner sleeve 4-4, and one end of the screw nut 4-8 is threadedly connected with the screw nut 4-9, and the other end of the screw nut 4-8 is threadedly connected. After the ends pass through the two support bearings 4-11 in turn, they are inserted into the center hole of the screw sleeve 4-18 and fixed. A button 4-19 is embedded in the center hole of the screw sleeve 4-18. The button 4-19 is sleeved on the other end of the lead screw 4-8. A button linear bearing 4-20 is provided between the inner wall of the button 4-19 and the outer surface of the lead screw 4-8. A button spring 4-21 is provided between the inner top of the button 4-19 and the end face of the lead screw 4-8. The outer surface of the screw sleeve 4-18 is provided with a lower clutch 4-13 and an upper clutch 4-17 from left to right. The lower clutch 4-13 is connected to the support leg housing 4 -23 is fixed, and a clutch spring 4-12 is sleeved on the screw sleeve 4-18, and a limiting boss is processed on the outer surface end of the screw sleeve 4-18. One end of the clutch spring 4-12 contacts the limiting boss on the screw sleeve 4-18, and the other end of the clutch spring 4-12 contacts the upper clutch 4-17. An upper clutch linear bearing 4-16 is provided between the outer surface of the upper clutch 4-17 and the inner wall of the other end port of the support leg housing 4-23, and the lower clutch dog teeth 4-14 of the lower clutch 4-13 are engaged with the upper clutch dog teeth 4-15 of the upper clutch 4-17;

[0024] Furthermore, a bearing support 4-10 is embedded in the center of the inner portion of the support leg housing 4-23, and the bearing support 4-10 is used to support two support bearings 4-11; the outer surface of the button 4-19 is processed with a button ball groove 4-22 along the circumferential direction, and the outer surface of the screw sleeve 4-18 is processed with at least three ball limiting holes 4-25 evenly distributed along the circumferential direction, and limiting balls 4-24 are provided in the ball limiting holes; the inner surface of the upper clutch 4-17 is processed with an upper clutch ball groove 4-17-1 along the circumferential direction;

[0025] Furthermore, the gun carriage 6 is installed inside the gun carriage bracket 2-2-3, and a gun carriage limit block 6-23 is provided at each end of the bottom surface of the gun carriage bracket 2-2-3. The gun carriage limit block 6-23 is used to horizontally clamp the outer wall of the gun carriage 6. A cross arm is provided at the rear center of the gun carriage bracket 2-2-3, and the cross arm is fixedly connected to the gun carriage bracket 2-2-3;

[0026] The gun carriage 6 includes a traverse motor 6-1, a lifting motor 6-2, a traverse drive gear 6-3, a traverse driven gear 6-4, a traverse screw nut 6-5, a traverse screw-screw 6-6, a No. 1 bearing 6-7, a No. 2 bearing 6-8, a gun carriage frame 6-9, a lifting main drive gear 6-10, a lifting driven gear 6-11, a lifting screw-nut 6-12, a lifting screw-screw 6-13, a No. 3 bearing 6-14, a No. 4 bearing 6-15, a traverse motor sensor bracket 6-16, a traverse motor counting grating 6-17, a traverse motor photoelectric sensor 6-18, a lifting motor sensor bracket 6-19, a lifting motor counting grating 6-20 and a lifting motor photoelectric sensor 6-21;

[0027] A support plate is provided inside the gun carriage frame 6-9, and the support plate and the gun carriage frame 6-9 are integrally arranged. A transverse motor 6-1 is provided on the upper side of the support plate. After the output shaft of the transverse motor 6-1 passes through the support plate, it is fixedly connected to the center hole of the transverse drive gear 6-3. A through hole is processed at the center of the rear panel of the gun carriage frame 6-9 and the support plate. A No. 1 bearing 6-7 is embedded in the through hole of the rear panel of the gun carriage frame 6-9, and a No. 2 bearing 6-8 is embedded in the through hole of the support plate. One end of the transverse screw-nut 6-5 is embedded in the inner hole of the No. 1 bearing 6-7. The other end of the transverse screw nut 6-5 is embedded in the inner hole of the second bearing 6-8. A transverse screw-screw 6-6 is provided inside the transverse screw nut 6-5. After one end of the transverse screw nut 6-5 passes through the support plate, it is fixedly connected to the center hole of the transverse driven gear 6-4. The transverse driving gear 6-3 is meshed with the transverse driven gear 6-4. The transverse motor counting grating 6-17 and the transverse motor photoelectric sensor 6-18 are fixed to the transverse motor sensor bracket 6-16. The transverse motor sensor bracket 6-16 is fixed to the gun carriage frame 6 at the corresponding position of the transverse motor 6-1. -9; A lifting motor 6-2 is provided on the lower part of the side of the support plate. After the output shaft of the lifting motor 6-2 passes through the support plate, it is fixedly connected to the center hole of the lifting main driving gear 6-10. A lifting screw-screw 6-13 is provided inside the other side of the gun carriage frame 6-9. The top end of the lifting screw-screw 6-13 is rotatably connected to an inner wall of the gun carriage frame 6-9 through the No. 4 bearing 6-15, and the bottom end of the lifting screw-screw 6-13 is rotatably connected to the other inner wall of the gun carriage frame 6-9 through the No. 3 bearing 6-14. The lower surface of the lifting screw-screw 6-13 is provided with a lifting screw. A lowering driven gear 6-11 is provided, and the lifting driven gear 6-11 is meshed with the lifting main driving gear 6-10. A lifting screw-nut 6-12 is provided on the lifting screw-screw 6-13. A welding gun is provided on the lifting screw-nut 6-12. A lifting motor counting grating 6-20 and a lifting motor photoelectric sensor 6-21 are fixedly connected to a lifting motor sensor bracket 6-19. The lifting motor sensor bracket 6-19 and the lifting motor 6-2 are fixedly connected to the gun carriage frame 6-9 according to their relative positions. A pair of gun carriage limit grooves 6-22 are respectively processed on both sides of the gun carriage frame 6-9.

[0028] Furthermore, the gun carriage limiting assembly 6-23 includes a limiting lock block 6-23-1, a gun carriage limiting pin 6-23-2, a locking block guide rail 6-23-3 and a pressure spring 6-23-4;

[0029] The upper surface of the limiting lock block 6-23-1 is uniformly provided with two gun vehicle limiting pins 6-23-2 along the length direction in the center, and the upper surface of the limiting lock block 6-23-1 is respectively provided with a through hole at both ends, and the inside of each through hole is provided with a lock block guide rail 6-23-3, and the bottom end of the lock block guide rail 6-23-3 is sleeved with a pressure spring 6-23-4, and the lock block guide rail 6-23-3 is in sliding connection with the limiting lock block 6-23-1;

[0030] Further, the connection principle of the support frame 1 and the rotary cutter frame 2: the two half-ring support frame units 1-1 can be automatically connected through the main lock units 3 at both ends, and at this time the four support legs 4 tightly embrace the pipeline. There are scales on the support legs 4, and the positioning spring cannot compress the support legs 4, or the upper clutch is rotated by the rotary wrench to adjust the extension of the support legs 4, and the length of the support legs 4 is locked by pressing the upper clutch with the rotary wrench;

[0031] The two half-ring cutter frame units 2-1 embrace the pipeline, and the two half-ring cutter frame units 2-1 are automatically connected through the main lock units 3. The rotary cutter frame 2 is buckled on the support frame 1, and the connection lock structure is composed of the connection lock rod 1-1-3, the lock ball 1-1-4, the guide pin 1-1-6 and the spring 1-1-7, and the rotary cutter frame 2 is axially fixed with the support frame 1 through at least four groups of connection lock structures. Before installation, the key is inserted into the key hole 1-1-3-3 at the top end of the connection lock rod 1-1-3, the connection lock rod 1-1-3 is pushed forward, and after the key is rotated, the connection lock rod is rotated under the limiting action of the guide pin 1-1-6, and the spring is not in action. The annular groove 1-1-3-2 on the connection lock rod 1-1-3 is at the position of the lock ball 1-1-4, the lock ball 1-1-4 enters the annular groove 1-1-3-2, the rotary cutter frame 2 is installed, and after being pushed to the position, the key is withdrawn in the reverse direction, and the connection lock rod 1-1-3 extrudes the lock ball 1-1-4 into the ball groove 2-1-2 under the action of the spring. The support frame 1 and the rotary cutter frame 2 are connected and can only make relative rotary motion. When working, the rotary cutter frame makes concentric rotary motion with the support frame through not less than six support frame rotary structures on the support frame. The half-ring support frame unit 1-1 and the half-ring cutter frame unit 2-1 can also be connected into a whole through the support frame connection lock structure, and then the two half-ring support frame units 1-1 are connected through the main lock unit 3, and the two half-ring cutter frame units 2-1 are connected through the main lock unit 3.

[0032] Support frame connection lock 3 working principle: when installation, the lock tongue 3-1 of half ring support unit 1-1 push the lock block assembly 3-2-2 in the lock body 3-2 of the other half ring support unit 1-1 move inward, the lock tongue guide bearing 3-1-3 on the lock tongue 3-1 move along the lock tongue guide groove 3-2-7, ensure the horizontal center of the lock bolt 3-2-1 and the lock tongue hole 3-1-1 on the lock tongue 3-1 in a line, to the head, the lock bolt 3-2-1 is pushed by the lock bolt spring 3-2-4, through the lock tongue hole 3-1-1 on the lock tongue 3-1 along the lock bolt 3-2-1 track into the lock block groove on the other side, at this time the lock block assembly 3-2-2 is pushed to the bottom of the lock body 3-2, the lock bolt 3-2-1 both ends are clamped in the lock body 3-2 of half ring support unit 1-1, two half ring support unit 1-1 locking; rotating tool holder is the same. When the work is finished, the key is pushed along the lock body key hole 3-2-6 to push the lock bolt 3-2-1, when the lock bolt 3-2-1 is withdrawn through the lock block assembly 3-2-3, the lock block assembly 3-2-3 is blocked by the lock bolt 3-2-1 under the action of the plate spring 3-2-3-3, at this time the two half ring support unit 1-1 is separated, the lock block assembly 3-2-2 is extended outward under the action of the lock block spring 3-2-2-4, the lock block assembly 3-2-2-1 on the lock block assembly 3-2-2-1 holds up the lock block assembly 3-2-3 to be horizontal, the lock bolt 3-2-1 is advanced under the action of the lock bolt spring 3-2-4, and stops when it collides with the lock block assembly 3-2-2, completing the preparation for the next assembly.

[0033] Support leg 4 working principle: when the pressure is applied to the roller 4-2, the nut moves along the axial direction of the support leg 4 through the linear bearing 4-7; at the same time, the screw rod 4-8 is on the support bearing 4-11 and does the in-place rotating movement. When the upper clutch 4-17 is pressed down, the upper clutch dog tooth engages with the lower clutch dog tooth, at this time the upper clutch ball groove 4-17-1 moves to the position of the screw rod outer sleeve ball hole 4-25, at this time the button 4-19 is popped up under the action of the button spring 4-21, and the limiting ball 4-24 is squeezed into the upper clutch ball groove 4-17-1, the upper clutch position is locked, the nut outer sleeve 4-5 position is locked, and the four support legs 4 clamp the pipeline, the length is fixed. When the button 4-19 is pressed down, the button ball groove 4-22 moves to the position of the screw rod outer sleeve ball hole 4-25, the upper clutch is popped up under the action of the clutch spring, the limiting ball 4-24 is squeezed into the button ball groove 4-22, the upper clutch dog tooth is separated from the lower clutch dog tooth, the screw rod 4-8 restores the ability to do the rotating movement in place, the nut outer sleeve 4-5 restores the ability to move up and down, and the button 4-19 position is locked.

[0034] The working principle of the gun carriage 6: The traverse motor 6-1 drives the traverse screw-nut 6-5 via the traverse drive gear 6-3 and the traverse driven gear 6-4. Because the traverse screw-nut 6-6 is fixedly connected to the crossbar of the gun carriage and remains stationary, the traverse screw-nut 6-5 and the gun carriage move as a whole, allowing the gun carriage 6 to move forward and backward along the gun carriage support 2-2-3. The lift motor 6-2 drives the lift screw-nut 6-13 via the lift main drive gear 6-10 and the lift driven gear 6-11. The lift screw-nut 6-12 cannot rotate within the track, so it moves up and down along the screw, driving the welding gun mounted on the lift screw-nut 6-12. The welding gun moves around the pipe with the rotating tool holder 2, moves horizontally with the gun carriage 6, and moves up and down with the lift screw-nut 6-12, achieving three-dimensional control on the pipe.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention overcomes the shortcomings of the prior art. The upper end surface of the support frame is provided with a rotating tool holder, and the rotating tool holder is rotatably connected to the support frame. The support frame is composed of two semi-ring support units, and the rotating tool holder is composed of two semi-ring tool holder units, and the ends of the two semi-ring support units and the ends of the two semi-ring tool holder units are locked and connected by a main locking unit. The support frame is evenly provided with four support legs along the circumferential direction, and a driving unit is provided between two of the support legs on the outer surface of the support frame, and a gun carriage is provided on the rotating tool holder; the support frame rotating tool holder and the gun carriage on the device can be quickly disassembled, and the support frame and the rotating tool holder can be unlocked by the main locking unit to disassemble the support frame into the two semi-ring support frame units and the rotating tool holder into the two semi-ring tool holder units, thereby realizing rapid disassembly of the welding device, so as to facilitate workers' carrying and on-site assembly and on-site welding of pipelines;

[0037] In addition, four support legs are evenly arranged on the circumferential outer surface of the support frame, and each support leg can be extended and retracted to achieve clamping and welding of pipes with different outer diameters, and can also meet the welding conditions of large pipe diameters, greatly improving the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a front view of a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0039] Figure 2 This is a front view of a semi-ring support unit in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0040] Figure 3 It is a side view of a half-ring support unit in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0041] Figure 4 yes Figure 2 A cross-sectional view of the semi-ring support unit at AA in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0042] Figure 5 yes Figure 2 A cross-sectional view of the semi-ring support unit BB in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0043] Figure 6 This is a front view of a connecting locking rod in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0044] Figure 7 yes Figure 6 DD cross-sectional view of the connection locking rod in the portable large-diameter pipe automatic welding or cutting device described in the present invention;

[0045] Figure 8 This is a front view of another half-ring support unit in the portable large-diameter pipe automatic welding or cutting device described in the present invention;

[0046] Figure 9 yes Figure 8 A cross-sectional view of another half-ring support unit CC in the portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0047] Figure 10 It is a cross-sectional view of a lock body in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0048] Figure 11 This is a front view of a locking block assembly in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0049] Figure 12 This is a front view of a latch assembly in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0050] Figure 13 This is a front view of a semi-ring tool holder unit in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0051] Figure 14 It is a side sectional view of a half-ring tool holder unit in a portable large-diameter pipe automatic welding or cutting device according to the present invention;

[0052] Figure 15 This is a front view of another half-ring tool holder unit in the portable large-diameter pipe automatic welding or cutting device described in the present invention;

[0053] Figure 16 is a main sectional view of a supporting leg of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application;

[0054] Figure 17 is an oblique sectional view of a supporting leg of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application;

[0055] Figure 18 is a top view of a gun vehicle of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application;

[0056] Figure 19 is a main sectional view of a gun vehicle of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application;

[0057] Figure 20 is a side view of a gun vehicle of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application;

[0058] Figure 21 is a front view of a limiting block of a gun vehicle of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application;

[0059] Figure 22 is a side sectional view of a portable large-pipe-diameter pipeline automatic welding or cutting device according to the present application. DETAILED DESCRIPTION

[0060] DETAILED DESCRIPTION Figure 1 and Figure 22 The present embodiment is described as follows. The portable large-pipe-diameter pipeline automatic welding or cutting device according to the present embodiment comprises a supporting frame 1, a rotating cutter frame 2, a main locking unit 3, a supporting leg 4, a driving unit 5 and a gun vehicle 6.

[0061] The upper end surface of the supporting frame 1 is provided with the rotating cutter frame 2, and the rotating cutter frame 2 is rotationally connected with the supporting frame 1. The supporting frame 1 is composed of two half-ring supporting unit 1-1, and the mechanical structures of the two half-ring supporting unit 1-1 are the same. The rotating cutter frame 2 is composed of two half-ring cutter frame unit 2-1, and the mechanical structures of the two half-ring cutter frame unit 2-1 are the same. The end portions of the two half-ring supporting unit 1-1 and the end portions of the two half-ring cutter frame unit 2-1 are all locked and connected through the main locking unit 3. The supporting frame 1 is uniformly provided with four supporting legs 4 in the circumferential direction. The driving unit 5 is arranged between two of the supporting legs 4 on the outer surface of the supporting frame 1. The gun vehicle 6 is arranged on the outer surface of the rotating cutter frame 2.

[0062] In this specific embodiment, using the pipeline welding equipment with this structure, the support frame and the rotating tool holder on the device can be quickly disassembled. The support frame and the rotating tool holder can be unlocked by the main lock unit, and the support frame can be disassembled into two half-ring support frame units, and then the rotating tool holder can be disassembled into two half-ring tool holder units, thereby realizing the rapid disassembly of the welding device, so that workers can carry and assemble on site, and perform on-site welding of pipelines.

[0063] In addition, four support legs are evenly arranged on the circumference of the support frame, and each support leg can be extended and retracted to achieve clamping and welding of pipes with different outer diameters. Different specifications can meet the welding conditions of different pipe diameter ranges, greatly improving the versatility of the device.

[0064] Specific implementation method 2: Combination Figures 1 to 7 This embodiment further defines the automatic welding or cutting device described in the first embodiment. This embodiment further defines a portable large-diameter pipe automatic welding or cutting device. The semi-ring support unit 1-1 includes a semi-ring support, a shaft 1-1-1, a bearing 1-1-2, a connecting lock rod 1-1-3, a lock bead 1-1-4, a guide pin 1-1-6, a spring 1-1-7, a support leg 1-1-8, and a drive gear 1-1-9.

[0065] The semi-ring bracket is evenly provided with four support leg supports 1-1-8 along the circumferential direction. The upper end surface of the semi-ring bracket is provided with at least three shaft rods 1-1-1 along the circumferential direction, and the top end of the shaft rod 1-1-1 is inserted into the inner ring of the bearing 1-1-2. A blind hole is machined on the side of each shaft rod 1-1-1 on the upper end surface of the semi-ring bracket, and a connecting lock rod 1-1-3 is provided inside the blind hole. Two through holes are machined on the inner wall of the blind hole, one of which is provided with a guide pin 1-1-6, and the other is provided with a lock bead 1-1-4. The connecting lock rod 1-1- The upper part of the outer surface of 3 is processed with a guide pin groove 1-1-3-1, the lower part of the outer surface of the connecting lock rod 1-1-3 is processed with an annular groove 1-1-3-2 along the circumferential direction, the center of the bottom surface of the connecting lock rod 1-1-3 is processed with a spring cavity 1-1-3-4, the interior of the spring cavity 1-1-3-4 is provided with a spring 1-1-7, the top of the connecting lock rod 1-1-3 is processed with a keyhole 1-1-3-3, and the middle part of the upper end surface of the semi-ring bracket is provided with a driving gear 1-1-9; the top of each blind hole on the upper end surface of the semi-ring bracket is provided with a sealing head 1-1-5;

[0066] The driving unit 5 includes a rotary tool holder motor 5-1, a control cable connector 5-2, a sensor bracket 5-3, a counting grating 5-4 and a photoelectric sensor 5-5;

[0067] A sensor bracket 5-3 is provided at the top of the rotating tool holder motor 5-1, and a counting grating 5-4 and a photoelectric sensor 5-5 are provided on the sensor bracket 5-3 in sequence. A control cable connector 5-2 is provided on the driving unit 5. The control cable connector 5-2 is used to connect to an external computer to control the driving state of the rotating tool holder motor 5-1, and the control cable connector 5-2 is also used to establish communication between the counting grating 5-4 and the photoelectric sensor 5-5 and the external computer. The output end of the rotating tool holder motor 5-1 is fixedly connected to the center hole of the driving gear 1-1-9.

[0068] Specific implementation method three: Combination Figures 13 to 15 Describe this embodiment. This embodiment is a further limitation of the automatic welding or cutting device described in the specific embodiment 1. This embodiment describes a portable large-diameter pipe automatic welding or cutting device, and the semi-ring tool holder unit 2-1 includes a semi-ring tool holder, a gear ring 2-1-1 and a ball groove 2-1-2; the inner wall of the ring groove of the semi-ring tool holder is processed with a ball groove 2-1-2 along the circumferential direction, and the upper part of the inner wall of the ring groove of the semi-ring tool holder is provided with a gear ring 2-1-1, the ring groove on the semi-ring tool holder is rollingly connected with the outer ring of the top bearing 1-1-2 of the shaft 1-1-1 on the semi-ring bracket, the gear ring 2-1-1 on the semi-ring tool holder is meshed with the driving gear 1-1-9 on the semi-ring bracket, and the semi-ring tool holder unit 2-1 and the semi-ring bracket unit 1-1 are locked and connected by the connecting locking rod 1-1-3.

[0069] Specific implementation method four: Combination Figure 15 This embodiment further defines the automatic welding or cutting device described in the third embodiment. This embodiment describes a portable automatic welding or cutting device for large-diameter pipes, in which a gun carriage bracket 2-2-3 is provided on the outer circumferential surface of one of the semi-ring tool holder units 2-1 in the rotating tool holder 2.

[0070] Specific implementation method five: Combination Figures 2 to 12 The present embodiment is described. The present embodiment further limits the automatic welding or cutting device described in the first embodiment. The present embodiment describes a portable large-diameter pipe automatic welding or cutting device, wherein the main lock unit 3 includes a lock tongue 3-1 and a lock body 3-2, the lock tongue 3-1 and the lock body 3-2 are cooperatively connected, and a lock tongue 3-1 is respectively installed at the end of one semi-ring bracket unit 1-1 and the end of the semi-ring tool holder unit 2-1, and a lock body 3-2 is respectively installed at the end of the other semi-ring bracket unit 1-1 and the end of the semi-ring tool holder unit 2-1.

[0071] Specific implementation method six: combination Figures 2 to 12This embodiment is described. This embodiment further limits the automatic welding or cutting device described in the fifth embodiment. This embodiment describes a portable large-diameter pipe automatic welding or cutting device. The lock tongue 3-1 includes a lock tongue housing, a lock tongue guide shaft 3-1-2, and a lock tongue guide bearing 3-1-3. The lock tongue housing is provided with a lock tongue guide shaft 3-1-2, and the lock tongue guide shaft 3-1-2 is provided with a lock tongue guide bearing 3-1-3. The lock tongue housing is processed with a lock tongue hole 3-1-1.

[0072] The lock body 3-2 includes a lock body shell, a lock bolt 3-2-1, a lock block assembly 3-2-2, a latch assembly 3-2-3, a lock bolt spring 3-2-4, a lock bolt plug 3-2-5, a lock block limit pin 3-2-8 and a latch support bearing track 3-2-9;

[0073] A lock tongue groove is machined in the middle of the lock body shell, and a lock tongue guide groove 3-2-7 is machined on the upper part of the lock tongue groove to guide the lock tongue guide bearing 3-1-3 to enter. A lock block groove is machined at the lower part of the lock tongue groove, and a latch support bearing track 3-2-9 and a latch cavity are machined on one side of the lock block groove. A through hole is provided on one side of the lock block groove, and a lock block limit pin 3-2-8 passes through the through hole and the lock block limit groove 3-2-2-3 and is fixed to the lock body shell for sliding limit of the lock block assembly 3-2-2. The latch assembly 3-2-3 is set In the side latch cavity of the lock block assembly 3-2-2, the latch assembly 3-2-3 can rotate in the latch cavity around the latch shaft of the latch assembly 3-2-3, and the latch shaft is fixed to the lock body shell; a countersunk through hole is processed on one side of the lock body shell, and a lock bolt 3-2-1 is provided inside the countersunk through hole, and a lock bolt spring 3-2-4 is sleeved on the lock bolt 3-2-1, and a lock bolt plug 3-2-5 is embedded in the top of the countersunk through hole on the lock body shell, and a lock body keyhole 3-2-6 is processed along the countersunk through hole on the other side of the lock body shell.

[0074] Specific implementation method seven: combination Figures 2 to 12 This embodiment further defines the automatic welding or cutting device described in Specific Embodiment 6. This embodiment further defines a portable large-diameter pipe automatic welding or cutting device. The locking block assembly 3-2-2 includes a locking block housing, a latch lifting bearing 3-2-2-1, a latch lifting shaft 3-2-2-2, and a locking block spring 3-2-2-4.

[0075] The lock block housing is provided with a latch lifting shaft 3-2-2-2, and the latch lifting shaft 3-2-2-2 is provided with a latch lifting bearing 3-2-2-1. Two lock block springs 3-2-2-4 are evenly provided on one side of the lock block housing along the width direction. The end of the lock block spring 3-2-2-4 contacts the inner wall of the lock body housing. A lock block limiting groove 3-2-2-3 is processed on the lock block housing, and the lock block limiting groove 3-2-2-3 is matched with the lock block limiting pin 3-2-8.

[0076] Specific implementation method eight: combination Figures 2 to 12 This embodiment further defines the automatic welding or cutting device described in Specific Embodiment 6. This embodiment further defines a portable large-diameter pipe automatic welding or cutting device. The latch assembly 3-2-3 includes a latch shaft 3-2-3-1, a latch rotation bearing 3-2-3-2, a leaf spring 3-2-3-3, and a latch 3-2-3-4.

[0077] A leaf spring 3-2-3-3 is provided on the end face of the long side of the latch 3-2-3-4, a latch shaft 3-2-3-1 is provided on the front end of the latch 3-2-3-4, and a latch rotating bearing 3-2-3-2 is provided on the latch shaft 3-2-3-1.

[0078] Specific implementation method nine: combination Figure 16 and Figure 17 Description of this embodiment. This embodiment is a further limitation of the automatic welding or cutting device described in the specific embodiment 1. This embodiment describes a portable large-diameter pipe automatic welding or cutting device, wherein the support leg 4 includes a roller frame 4-1, a roller 4-2, a linear bearing support 4-3, a nut inner sleeve 4-4, a nut outer sleeve 4-5, a main spring 4-6, a linear bearing 4-7, a lead screw 4-8, a lead screw nut 4-9, a support bearing 4-11, a clutch spring 4-12, a lower clutch 4-13, an upper clutch linear bearing 4-16, an upper clutch 4-17, a screw outer sleeve 4-18, a button 4-19, a button linear bearing 4-20, a button spring 4-21, a support leg housing 4-23 and a limit ball 4-24;

[0079] The support leg shell 4-23 is a cylindrical tube, one end of the inside of the support leg shell 4-23 is provided with a nut sleeve 4-5, a linear bearing 4-7 is arranged between the outer surface of the nut sleeve 4-5 and the inner wall of the support leg shell 4-23, a plurality of grooves are respectively processed on the inner wall of the support leg shell 4-23 and the outer wall of the nut sleeve 4-5 in the circumferential direction, the outer side of the linear bearing 4-7 ball is in rolling connection with the groove on the support leg shell 4-23, the inner side of the linear bearing 4-7 ball is in rolling connection with the groove on the nut sleeve 4-5, a linear bearing support 4-3 is arranged on the inner wall of one end of the support leg shell 4-23, the end of the linear bearing 4-7 is axially limited with the inner wall of the support leg shell 4-23 through the linear bearing support 4-3, the end of the nut sleeve 4-5 is provided with a roller frame 4-1, the roller frame 4-1 is provided with a roller 4-2, the inside of the nut sleeve 4-5 is provided with a nut inner sleeve 4-4, the end of the nut inner sleeve 4-4 and the nut sleeve 4-5 is fixedly connected with the bottom surface of the roller frame 4-1, a main spring 4-6 is sleeved on the nut inner sleeve 4-4, a lead screw nut 4-9 is embedded in one end of the nut inner sleeve 4-4, one end of a lead screw rod 4-8 is threadedly connected with the lead screw nut 4-9, the other end of the lead screw rod 4-8 passes through two support bearings 4-11 in sequence and is then inserted into the central hole of a screw rod sleeve 4-18 for fixation, a button 4-19 is embedded in the central hole of the screw rod sleeve 4-18, the button 4-19 is sleeved on the other end of the lead screw rod 4-8, a button linear bearing 4-20 is arranged between the inner wall of the button 4-19 and the outer surface of the lead screw rod 4-8, a button spring 4-21 is arranged between the inner top end of the button 4-19 and the end surface of the lead screw rod 4-8, a lower clutch 4-13 and an upper clutch 4-17 are arranged on the outer surface of the screw rod sleeve 4-18 from left to right, the lower clutch 4-13 is fixedly connected with the inner wall of the support leg shell 4-23, a clutch spring 4-12 is sleeved on the screw rod sleeve 4-18, a limiting boss is processed on the end of the outer surface of the screw rod sleeve 4-18, one end of the clutch spring 4-12 is in contact with the limiting boss on the screw rod sleeve 4-18, the other end of the clutch spring 4-12 is in contact with the bottom of the upper clutch 4-17, an upper clutch linear bearing 4-16 is arranged between the outer surface of the upper clutch 4-17 and the inner wall of the other end of the support leg shell 4-23, a lower clutch dog tooth 4-14 of the lower clutch 4-13 is in meshing connection with an upper clutch dog tooth 4-15 of the upper clutch 4-17.

[0080] The inside of the support leg shell 4-23 is embedded with a bearing support 4-10 in the central part, the bearing support 4-10 is used for supporting the two support bearings 4-11; the outer surface of the button 4-19 is processed with a button bead groove 4-22 in the circumferential direction, at least three ball limiting holes 4-25 are uniformly processed on the outer surface of the screw rod sleeve 4-18 in the circumferential direction, limiting balls 4-24 are arranged in the ball limiting holes; the inner surface of the upper clutch 4-17 is processed with an upper clutch bead groove 4-17-1 in the circumferential direction.

[0081] Specific implementation method ten: Combination Figure 15 、 Figure 18 、 Figure 19 and Figure 20 This embodiment is described. This embodiment further limits the automatic welding or cutting device described in the fourth embodiment. This embodiment describes a portable large-diameter pipe automatic welding or cutting device. The gun carriage 6 is installed inside the gun carriage bracket 2-2-3. Both ends of the bottom surface of the gun carriage bracket 2-2-3 are respectively provided with a gun carriage limit block 6-23. The gun carriage limit block 6-23 is used to horizontally clamp the outer wall of the gun carriage 6. A cross arm is provided at the rear center of the gun carriage bracket 2-2-3, and the cross arm is fixedly connected to the gun carriage bracket 2-2-3.

[0082] The gun carriage 6 includes a traverse motor 6-1, a lifting motor 6-2, a traverse drive gear 6-3, a traverse driven gear 6-4, a traverse screw nut 6-5, a traverse screw-screw 6-6, a No. 1 bearing 6-7, a No. 2 bearing 6-8, a gun carriage frame 6-9, a lifting main drive gear 6-10, a lifting driven gear 6-11, a lifting screw-nut 6-12, a lifting screw-screw 6-13, a No. 3 bearing 6-14, a No. 4 bearing 6-15, a traverse motor sensor bracket 6-16, a traverse motor counting grating 6-17, a traverse motor photoelectric sensor 6-18, a lifting motor sensor bracket 6-19, a lifting motor counting grating 6-20 and a lifting motor photoelectric sensor 6-21;

[0083] A support plate is provided inside the gun carriage frame 6-9, and the support plate and the gun carriage frame 6-9 are integrally arranged. A transverse motor 6-1 is provided on the upper side of the support plate. After the output shaft of the transverse motor 6-1 passes through the support plate, it is fixedly connected to the center hole of the transverse drive gear 6-3. A through hole is processed at the center of the rear panel of the gun carriage frame 6-9 and the support plate. A No. 1 bearing 6-7 is embedded in the through hole of the rear panel of the gun carriage frame 6-9, and a No. 2 bearing 6-8 is embedded in the through hole of the support plate. One end of the transverse screw-nut 6-5 is embedded in the inner hole of the No. 1 bearing 6-7. The other end of the transverse screw nut 6-5 is embedded in the inner hole of the second bearing 6-8. A transverse screw-screw 6-6 is provided inside the transverse screw nut 6-5. After one end of the transverse screw nut 6-5 passes through the support plate, it is fixedly connected to the center hole of the transverse driven gear 6-4. The transverse driving gear 6-3 is meshed with the transverse driven gear 6-4. The transverse motor counting grating 6-17 and the transverse motor photoelectric sensor 6-18 are fixed to the transverse motor sensor bracket 6-16. The transverse motor sensor bracket 6-16 is fixed to the gun carriage frame 6 at the corresponding position of the transverse motor 6-1. -9; A lifting motor 6-2 is provided on the lower part of the side of the support plate. After the output shaft of the lifting motor 6-2 passes through the support plate, it is fixedly connected to the center hole of the lifting main driving gear 6-10. A lifting screw-screw 6-13 is provided inside the other side of the gun carriage frame 6-9. The top end of the lifting screw-screw 6-13 is rotatably connected to an inner wall of the gun carriage frame 6-9 through the No. 4 bearing 6-15, and the bottom end of the lifting screw-screw 6-13 is rotatably connected to the other inner wall of the gun carriage frame 6-9 through the No. 3 bearing 6-14. The lower surface of the lifting screw-screw 6-13 is provided with a lifting screw. The lifting driven gear 6-11 is meshed with the lifting main drive gear 6-10, and the lifting screw-screw 6-13 is provided with a lifting screw-nut 6-12, and the lifting screw-nut 6-12 is provided with a welding gun, the lifting motor counting grating 6-20, and the lifting motor photoelectric sensor 6-21 are fixedly connected to the lifting motor sensor bracket 6-19, the lifting motor sensor bracket 6-19 and the lifting motor 6-2 are fixedly connected to the gun carriage frame 6-9 according to their relative positions, and a pair of gun carriage limit grooves 6-22 are respectively processed on both sides of the gun carriage frame 6-9.

[0084] Specific implementation method 11: Combination Figure 21 This embodiment is described. This embodiment further limits the automatic welding or cutting device described in the specific embodiment 10. This embodiment is a portable large-diameter pipe automatic welding or cutting device. The gun carriage limit assembly 6-23 includes a limit lock block 6-23-1, a gun carriage limit pin 6-23-2, a lock block guide rail 6-23-3 and a pressure spring 6-23-4.

[0085] Two gun carriage limit pins 6-23-2 are evenly arranged along the length direction at the center of the upper surface of the limit lock block 6-23-1, and a through hole is provided at both ends of the upper surface of the limit lock block 6-23-1. A lock block guide rail 6-23-3 is provided inside each through hole, and a pressure spring 6-23-4 is provided at the bottom end of the lock block guide rail 6-23-3. The lock block guide rail 6-23-3 is slidably connected to the limit lock block 6-23-1.

[0086] How it works

[0087] The connection principle between the support frame 1 and the rotary tool holder 2: The two half-ring support units 1-1 are automatically connected by the main locking units 3 at both ends. At this time, the four support legs 4 firmly hold the pipe. There are scales on the support legs 4. If the positioning spring is not accurate, the support legs 4 can be compressed or the upper clutch can be rotated with a rotary wrench to adjust the extension of the support legs 4. Pressing the upper clutch with the rotary wrench locks the length of the support legs 4.

[0088] The two half-ring tool holder units 2-1 are sheathed around the pipe and are automatically connected via the main lock unit 3. The rotating tool holder 2 is buckled onto the support frame 1. The connecting lock structure is composed of the connecting lock rod 1-1-3, the lock bead 1-1-4, the guide pin 1-1-6, and the spring 1-1-7. The rotating tool holder 2 is axially fixed to the support frame 1 via at least four sets of connecting lock structures. Before installation, insert the key into the keyhole 1-1-3-3 at the top of the connecting lock rod 1-1-3, push the connecting lock rod 1-1-3 forward, and rotate the key after it reaches the end. The connecting lock rod 1-1-3 is limited by the guide pin 1-1-6. When the connecting lock rod rotates, the spring no longer works, and the annular groove 1-1-3-2 on the connecting lock rod 1-1-3 is positioned at the position of the lock ball 1-1-4. The lock ball 1-1-4 enters the annular groove 1-1-3-2, and the rotating tool holder 2 is installed. After it is pushed into place, the key is rotated in the opposite direction to remove the key. The connecting lock rod 1-1-3, under the action of the spring, squeezes the lock ball 1-1-4 into the ball groove 2-1-2, and the support frame 1 and the rotating tool holder 2 are connected, and can only perform relative rotational motion. During operation, under program control, the rotating tool holder performs concentric rotational motion with the support frame through no less than six rotating structures on the support frame. The semi-ring support unit 1-1 and the semi-ring tool holder unit 2-1 can also be first connected to form a whole by the connecting lock structure on the support frame, and then the two semi-ring support units 1-1 are locked and connected by the main lock unit 3 at the same time. The two semi-ring tool holder units 2-1 are locked and connected by the main lock unit 3.

[0089] The working principle of the support frame connecting lock 3: during installation, the lock tongue 3-1 of the semi-ring bracket unit 1-1 pushes the lock block assembly 3-2-2 in the lock body 3-2 of the other semi-ring bracket unit 1-1 to move inward, and the lock tongue guide bearing 3-1-3 on the lock tongue 3-1 of the semi-ring bracket unit 1-1 moves along the lock tongue guide groove 3-2-7 to ensure that the horizontal center of the lock bolt 3-2-1 and the lock tongue hole 3-1-1 on the lock tongue 3-1 are in a line. After reaching the end, the lock bolt 3-2-1, pushed by the lock bolt spring 3-2-4, passes through the lock tongue hole 3-1-1 on the lock tongue 3-1 and enters the other side of the lock block groove along the lock bolt 3-2-1 track. At this time, the lock block assembly 3-2-2 is pushed to the bottom of the lock body 3-2, and the two ends of the lock bolt 3-2-1 are stuck on both sides of the lock body 3-2 of the semi-ring bracket unit 1-1, and the two semi-ring bracket units 1-1 are locked; the rotating tool holder is the same. When the work is finished, use the key to push the lock bolt 3-2-1 along the keyhole 3-2-6 of the lock body. When the lock bolt 3-2-1 retreats past the latch assembly 3-2-3, the latch assembly 3-2-3 blocks the lock bolt 3-2-1 under the action of the leaf spring 3-2-3-3. At this time, the two semi-ring bracket units 1-1 are separated, and the lock block assembly 3-2-2 extends outward under the action of the lock block spring 3-2-2-4. The latch lifting bearing 3-2-2-1 on the lock block assembly 3-2-2 lifts the latch assembly 3-2-3 to a horizontal shape. The lock bolt 3-2-1 moves forward under the action of the latch spring 3-2-4 and stops when it hits the lock block assembly 3-2-2, completing preparations for the next assembly.

[0090] Support leg 4 operates as follows: When pressure is applied to roller 4-2, the nut moves axially along support leg 4 via linear bearing 4-7. Simultaneously, lead screw 4-8 rotates in place against support bearing 4-11. When upper clutch 4-17 is pressed, the upper and lower clutch dog teeth engage, causing upper clutch bead groove 4-17-1 to move to the position of bead hole 4-25 on the screw housing. At this point, button 4-19 springs upward under the action of button spring 4-21, forcing limit ball 4-24 into upper clutch bead groove 4-17-1. This locks the upper clutch position, locking the nut housing 4-5. The four support legs 4 clamp the pipe, fixing its length. When the button 4-19 is pressed, the button bead groove 4-22 moves to the position of the screw housing bead hole 4-25, and the upper clutch pops up under the action of the clutch spring, squeezing the limit ball 4-24 into the button bead groove 4-22, and the upper clutch dog teeth are disengaged from the lower clutch dog teeth, and the lead screw 4-8 recovers the ability to rotate in place, and the nut housing 4-5 recovers the ability to move up and down, and the button 4-19 position is locked.

[0091] The working principle of the gun carriage 6: The traverse motor 6-1 drives the traverse screw-nut 6-5 via the traverse drive gear 6-3 and the traverse driven gear 6-4. Because the traverse screw-nut 6-6 is fixedly connected to the crossbar of the gun carriage and remains stationary, the traverse screw-nut 6-5 and the gun carriage move as a whole, allowing the gun carriage 6 to move forward and backward along the gun carriage support 2-2-3. The lift motor 6-2 drives the lift screw-nut 6-13 via the lift main drive gear 6-10 and the lift driven gear 6-11. The lift screw-nut 6-12 cannot rotate within the track, so it moves up and down along the screw, driving the welding gun mounted on the lift screw-nut 6-12. The welding gun moves around the pipe with the rotating tool holder 2, moves horizontally with the gun carriage 6, and moves up and down with the lift screw-nut 6-12, achieving three-dimensional control on the pipe.

Claims

1. A portable large diameter pipe automatic welding or cutting device, characterized by: It includes a support frame (1), a rotating tool holder (2), a main locking unit (3), a support leg (4), a driving unit (5) and a gun carriage (6); The upper end surface of the support frame (1) is provided with a rotating tool holder (2), and the rotating tool holder (2) is rotatably connected to the support frame (1). The support frame (1) is composed of two semi-ring support units (1-1), and the two semi-ring support units (1-1) have the same mechanical structure. The rotating tool holder (2) is composed of two semi-ring tool holder units (2-1), and the two semi-ring tool holder units (2-1) have the same mechanical structure. The ends of the two semi-ring support units (1-1) and the ends of the two semi-ring tool holder units (2-1) are locked and connected by a main locking unit (3). The support frame (1) is evenly provided with four support legs (4) along the circumferential direction. A driving unit (5) is provided between the two support legs (4) on one of the semi-ring support units (1-1) of the support frame (1). A gun carriage (6) is provided on the outer surface of the rotating tool holder (2).

2. A portable large-diameter pipe automatic welding or cutting device according to claim 1, characterized in that: The semi-ring support unit (1-1) comprises a semi-ring support, a shaft (1-1-1), a bearing (1-1-2), a connecting lock rod (1-1-3), a lock bead (1-1-4), a sealing head (1-1-5), a guide pin (1-1-6), a spring (1-1-7), a support leg support (1-1-8) and a driving gear (1-1-9); The outer surface of the semi-ring bracket is evenly provided with two support leg supports (1-1-8) along the circumferential direction, the upper end surface of the semi-ring bracket is provided with at least three shaft rods (1-1-1) along the circumferential direction, and the top end of the shaft rod (1-1-1) is inserted into the inner ring of the bearing (1-1-2), and a blind hole is machined on the side of each shaft rod (1-1-1) on the upper end surface of the semi-ring bracket, and a connecting lock rod (1-1-3) is provided inside the blind hole, and two through holes are machined on the inner wall of the blind hole, one of the through holes is provided with a guide pin (1-1-6), and the other through hole is provided with a lock bead (1-1-4), and the connecting lock rod (1-1-3 ) is processed with a guide pin groove (1-1-3-1) on the upper portion of the outer surface, an annular groove (1-1-3-2) is processed along the circumferential direction on the lower portion of the outer surface of the connecting lock rod (1-1-3), a spring cavity (1-1-3-4) is processed at the center of the bottom surface of the connecting lock rod (1-1-3), a spring (1-1-7) is provided inside the spring cavity (1-1-3-4), a keyhole (1-1-3-3) is processed at the top end of the connecting lock rod (1-1-3), and a driving gear (1-1-9) is provided at the middle portion of the upper end surface of the semi-ring bracket; and a sealing head (1-1-5) is provided at the top end of each blind hole in the upper end surface of the semi-ring bracket; The driving unit (5) comprises a rotary tool holder motor (5-1), a control cable connector (5-2), a sensor bracket (5-3), a counting grating (5-4) and a photoelectric sensor (5-5); A sensor bracket (5-3) is provided at the top of the rotary tool holder motor (5-1), a counting grating (5-4) and a photoelectric sensor (5-5) are sequentially provided on the sensor bracket (5-3), a control cable connector (5-2) is provided on the drive unit (5), the control cable connector (5-2) is used to connect to an external computer to control the driving state of the rotary tool holder motor (5-1), and the control cable connector (5-2) is also used to establish communication between the counting grating (5-4) and the photoelectric sensor (5-5) and the external computer, and the output end of the rotary tool holder motor (5-1) is fixedly connected to the center hole of the drive gear (1-1-9).

3. The portable large-diameter pipe automatic welding or cutting device according to claim 1, characterized in that: The semi-ring tool holder unit (2-1) comprises a semi-ring tool holder, a gear ring (2-1-1) and a ball groove (2-1-2); the inner wall of the ring groove of the semi-ring tool holder is processed with a ball groove (2-1-2) along the circumferential direction; the upper part of the inner wall of the ring groove of the semi-ring tool holder is provided with a gear ring (2-1-1); the ring groove on the semi-ring tool holder is in rolling connection with the outer ring of the top bearing (1-1-2) of the shaft (1-1-1) on the semi-ring bracket; the gear ring (2-1-1) on the semi-ring tool holder is meshed with the driving gear (1-1-9) on the semi-ring bracket; the semi-ring tool holder unit (2-1) and the semi-ring bracket unit (1-1) are locked and connected via a connecting lock rod (1-1-3).

4. A portable large-diameter pipe automatic welding or cutting device according to claim 3, characterized in that: A gun carriage support (2-2-3) is provided on the outer circumferential surface of one of the semi-ring tool holder units (2-1) in the rotating tool holder (2).

5. The portable large-diameter pipe automatic welding or cutting device according to claim 1, characterized in that: The main lock unit (3) comprises a lock tongue (3-1) and a lock body (3-2), the lock tongue (3-1) and the lock body (3-2) being cooperatively connected, and a lock tongue (3-1) is respectively installed at the end of one semi-ring support unit (1-1) and the end of the semi-ring tool holder unit (2-1), and a lock body (3-2) is respectively installed at the end of the other semi-ring support unit (1-1) and the end of the semi-ring tool holder unit (2-1).

6. The portable large-diameter pipe automatic welding or cutting device according to claim 5, characterized in that: The lock tongue (3-1) comprises a lock tongue housing, a lock tongue guide shaft (3-1-2) and a lock tongue guide bearing (3-1-3); the lock tongue housing is provided with a lock tongue guide shaft (3-1-2), the lock tongue guide shaft (3-1-2) is provided with a lock tongue guide bearing (3-1-3), and the lock tongue housing is processed with a lock tongue hole (3-1-1); The lock body (3-2) comprises a lock body housing, a lock bolt (3-2-1), a lock block assembly (3-2-2), a latch assembly (3-2-3), a lock bolt spring (3-2-4), a lock bolt plug (3-2-5), a lock block limit pin (3-2-8) and a latch lifting bearing track (3-2-9); A lock tongue groove is machined in the middle of the lock body shell, a lock tongue guide groove (3-2-7) is machined on the upper part of the lock tongue groove to guide the lock tongue guide bearing (3-1-3) to enter, a lock block groove is machined on the lower part of the lock tongue groove, a latch support bearing track (3-2-9) and a latch cavity are machined on one side of the lock block groove, a through hole is provided on one side of the lock block groove, a lock block limit pin (3-2-8) passes through the through hole and the lock block limit groove (3-2-2-3) and is fixed to the lock body shell for slidingly limiting the lock block assembly (3-2-2), and the latch assembly (3-2-3) is set In the side latch cavity of the lock block assembly (3-2-2), the latch assembly (3-2-3) rotates around the latch shaft of the latch assembly (3-2-3) in the latch cavity, and the latch shaft is fixedly connected to the lock body shell; a countersunk through hole is processed on one side of the lock body shell, a lock bolt (3-2-1) is provided inside the countersunk through hole, a lock bolt spring (3-2-4) is sleeved on the lock bolt (3-2-1), a lock bolt plug (3-2-5) is embedded in the top of the countersunk through hole on the lock body shell, and a lock body keyhole (3-2-6) is processed along the countersunk through hole on the other side of the lock body shell.

7. The portable large-diameter pipe automatic welding or cutting device according to claim 6, characterized in that: The locking block assembly (3-2-2) comprises a locking block housing, a latch lifting bearing (3-2-2-1), a latch lifting shaft (3-2-2-2) and a locking block spring (3-2-2-4); The lock block housing is provided with a latch lifting shaft (3-2-2-2), the latch lifting shaft (3-2-2-2) is provided with a latch lifting bearing (3-2-2-1), one side of the lock block housing is evenly provided with two lock block springs (3-2-2-4) along the width direction, the end of the lock block spring (3-2-2-4) contacts the inner wall of the lock body housing, and the lock block housing is processed with a lock block limiting groove (3-2-2-3), and the lock block limiting groove (3-2-2-3) is matched with the lock block limiting pin (3-2-8) for connection.

8. The portable large-diameter pipe automatic welding or cutting device according to claim 6, characterized in that: The latch assembly (3-2-3) comprises a latch shaft (3-2-3-1), a latch rotation bearing (3-2-3-2), a leaf spring (3-2-3-3) and a latch (3-2-3-4); A leaf spring (3-2-3-3) is provided on the end face of the long side of the latch (3-2-3-4), a latch shaft (3-2-3-1) is provided at one end of the front face of the latch (3-2-3-4), and a latch rotating bearing (3-2-3-2) is provided on the latch shaft (3-2-3-1).

9. The portable large-diameter pipe automatic welding or cutting device according to claim 1, characterized in that: The support leg (4) comprises a roller frame (4-1), a roller (4-2), a linear bearing support (4-3), a nut inner sleeve (4-4), a nut outer sleeve (4-5), a main spring (4-6), a linear bearing (4-7), a lead screw (4-8), a lead screw nut (4-9), a bearing support (4-10), a support bearing (4-11), a clutch spring (4-12), a lower clutch (4-13), an upper clutch linear bearing (4-16), an upper clutch (4-17), a screw outer sleeve (4-18), a button (4-19), a button linear bearing (4-20), a button spring (4-21), a support leg housing (4-23) and a limit ball (4-24); The support leg housing (4-23) is cylindrical and tubular. A nut sleeve (4-5) is provided at one end of the interior of the support leg housing (4-23). ​​A linear bearing (4-7) is provided between the outer surface of the nut sleeve (4-5) and the inner wall of the support leg housing (4-23). ​​A plurality of grooves are processed along the circumferential direction on the inner wall of the support leg housing (4-23) and the outer wall of the nut sleeve (4-5). The outer side of the ball of the linear bearing (4-7) is in rolling connection with the groove on the support leg housing (4-23). ​​The inner side of the ball of the linear bearing (4-7) is in rolling connection with the groove on the nut sleeve (4-5). A linear bearing support (4-3) is provided on the inner wall of one end of the support leg housing (4-23). ​​The linear bearing ( The end of the nut outer sleeve (4-7) is axially limited by the inner wall of the linear bearing support (4-3) and the support leg housing (4-23), the end of the nut outer sleeve (4-5) is provided with a roller frame (4-1), the roller frame (4-1) is provided with a roller (4-2), the interior of the nut outer sleeve (4-5) is provided with a nut inner sleeve (4-4), the ends of the nut inner sleeve (4-4) and the nut outer sleeve (4-5) are both fixedly connected to the bottom surface of the roller frame (4-1), and the nut inner sleeve (4-4) is provided with a main spring (4-6), one end of the nut inner sleeve (4-4) is embedded with a lead screw nut (4-9), one end of the lead screw (4-8) is threadedly connected to the lead screw nut (4-9), and the other end of the lead screw (4-8) is threadedly connected to the lead screw nut (4-9). After one end passes through the two support bearings (4-11) in sequence, it is inserted into the center hole of the screw sleeve (4-18) and fixed. A button (4-19) is embedded in the center hole of the screw sleeve (4-18). The button (4-19) is sleeved on the other end of the lead screw (4-8). A button linear bearing (4-20) is provided between the inner wall of the button (4-19) and the outer surface of the lead screw (4-8). A button spring (4-21) is provided between the inner top of the button (4-19) and the end face of the lead screw (4-8). A lower clutch (4-13) and an upper clutch (4-17) are provided on the outer surface of the screw sleeve (4-18) from left to right. The lower clutch (4-13) is connected to the support leg housing ( The screw outer sleeve (4-18) is fixedly connected to the inner wall of the upper clutch (4-23), and a clutch spring (4-12) is sleeved on the screw outer sleeve (4-18), and a limiting boss is processed on the outer surface end of the screw outer sleeve (4-18), one end of the clutch spring (4-12) contacts the limiting boss on the screw outer sleeve (4-18), and the other end of the clutch spring (4-12) contacts the bottom of the upper clutch (4-17), and an upper clutch linear bearing (4-16) is provided between the outer surface of the upper clutch (4-17) and the inner wall of the other end port of the support leg housing (4-23), and the lower clutch dog teeth (4-14) of the lower clutch (4-13) are meshed and connected with the upper clutch dog teeth (4-15) of the upper clutch (4-17); A bearing support (4-10) is embedded in the center of the inner portion of the support leg housing (4-23), and the bearing support (4-10) is used to support two support bearings (4-11); the outer surface of the button (4-19) is processed with a button ball groove (4-22) along the circumferential direction, and the outer surface of the screw sleeve (4-18) is processed with at least three ball limiting holes (4-25) evenly distributed along the circumferential direction, and limiting balls (4-24) are arranged in the ball limiting holes; and the inner surface of the upper clutch (4-17) is processed with an upper clutch ball groove (4-17-1) along the circumferential direction.

10. The portable large-diameter pipe automatic welding or cutting device according to claim 4, characterized in that: The gun carriage (6) is installed inside the gun carriage bracket (2-2-3), and a gun carriage limiting assembly block (6-23) is respectively provided at both ends of the bottom surface of the gun carriage bracket (2-2-3). The gun carriage limiting assembly block (6-23) is used to horizontally clamp the outer wall of the gun carriage (6). A cross arm is provided at the center of the rear part of the gun carriage bracket (2-2-3), and the cross arm is fixedly connected to the gun carriage bracket (2-2-3); The gun carriage (6) includes a traverse motor (6-1), a lifting motor (6-2), a traverse drive gear (6-3), a traverse driven gear (6-4), a traverse screw-nut (6-5), a traverse screw-screw (6-6), a No. 1 bearing (6-7), a No. 2 bearing (6-8), a gun carriage frame (6-9), a lifting main drive gear (6-10), a lifting driven gear (6-11), a lifting screw-nut (6-12), a lifting screw-screw (6-13), a No. 3 bearing (6-14), a No. 4 bearing (6-15), a traverse motor sensor bracket (6-16), a traverse motor counting grating (6-17), a traverse motor photoelectric sensor (6-18), a lifting motor sensor bracket (6-19), a lifting motor counting grating (6-20) and a lifting motor photoelectric sensor (6-21); A support plate is provided inside the gun carriage frame (6-9), and the support plate and the gun carriage frame (6-9) are integrally arranged. A transverse motor (6-1) is provided on the upper side of the support plate. After the output shaft of the transverse motor (6-1) passes through the support plate, it is fixedly connected to the center hole of the transverse drive gear (6-3). A through hole is processed at the center of the rear panel of the gun carriage frame (6-9) and the support plate. A No. 1 bearing (6-7) is embedded in the through hole of the rear panel of the gun carriage frame (6-9), and a No. 2 bearing (6-8) is embedded in the through hole of the support plate. One end of the transverse screw-nut (6-5) is embedded in the inner hole of the No. 1 bearing (6-7). The transverse screw -The other end of the nut (6-5) is embedded in the inner hole of the second bearing (6-8), and a transverse screw-screw (6-6) is provided inside the transverse screw-nut (6-5). After one end of the transverse screw-nut (6-5) passes through the support plate, it is fixedly connected to the center hole of the transverse driven gear (6-4). The transverse driving gear (6-3) is meshed with the transverse driven gear (6-4). The transverse motor counting grating (6-17) and the transverse motor photoelectric sensor (6-18) are fixed to the transverse motor sensor bracket (6-16). The transverse motor sensor bracket (6-16) is fixed to the gun carriage frame (6) at the corresponding position of the transverse motor (6-1). -9); a lifting motor (6-2) is provided on the lower side of the support plate, and the output shaft of the lifting motor (6-2) is fixedly connected to the center hole of the lifting main driving gear (6-10) after passing through the support plate, and a lifting screw-screw (6-13) is provided inside the other side of the gun carriage frame (6-9), and the top end of the lifting screw-screw (6-13) is rotatably connected to an inner wall of the gun carriage frame (6-9) through the fourth bearing (6-15), and the bottom end of the lifting screw-screw (6-13) is rotatably connected to the other inner wall of the gun carriage frame (6-9) through the third bearing (6-14), and a lifting screw-screw (6-13) is provided on the lower outer surface. A driven gear (6-11) is provided, and the lifting driven gear (6-11) is meshedly connected with the lifting main drive gear (6-10); a lifting screw-nut (6-12) is provided on the lifting screw-screw (6-13); a welding gun is provided on the lifting screw-nut (6-12); a lifting motor counting grating (6-20) and a lifting motor photoelectric sensor (6-21) are fixedly connected to a lifting motor sensor bracket (6-19); the lifting motor sensor bracket (6-19) and the lifting motor (6-2) are fixedly connected to a gun carriage frame (6-9) according to their relative positions; and a pair of gun carriage limit grooves (6-22) are respectively processed on both sides of the gun carriage frame (6-9); The gun carriage limiting assembly block (6-23) includes a limiting lock block (6-23-1), a gun carriage limiting pin (6-23-2), a locking block guide rail (6-23-3) and a pressure spring (6-23-4); Two gun carriage limit pins (6-23-2) are evenly arranged along the length direction at the center of the upper surface of the limit lock block (6-23-1), and a through hole is respectively provided at both ends of the upper surface of the limit lock block (6-23-1). A lock block guide rail (6-23-3) is provided inside each through hole, and a pressure spring (6-23-4) is provided at the bottom end of the lock block guide rail (6-23-3). The lock block guide rail (6-23-3) is slidably connected to the limit lock block (6-23-1).

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