A cutting collar welding production line for coal mine pipeline

Abstract

The application discloses a cutting ring welding production line for coal mine pipelines, which comprises a supporting frame, a pushing frame, a cutting device, three feeding vehicles, two ring device, two welding devices, two discharging vehicles, a supporting rope frame and a control system, the pushing frame is arranged in a straight line and is spaced to form a transport line, the cutting device is arranged in the middle of the transport line, a track is arranged on the ground between the transport line and the ring device, the two ring devices and the welding devices are symmetrically arranged on the two sides of the track, and the transmission mechanism, the crank connecting rod slider mechanism, the ejector rod mechanism, the ring pushing mechanism and the ring supplementing mechanism of the ring device are arranged in a staggered mode due to different initial positions and are connected to the same shaft, the automatic ring device at the pipeline end and the automatic welding device in all positions are adopted, automatic operation of the pipeline ring and welding can be realized, the forming quality of the welding seam and the welding speed are improved, the labor cost and the time cost are reduced, and the welding of small-diameter and long-size coal mine conveying pipelines has unique advantages.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline welding equipment, specifically relating to a cutting collar welding production line for coal mine pipelines. Background Technology

[0002] With the rapid development of my country's economy, the use of underground pipelines in coal mines has also developed rapidly. Pipelines used in coal mines require significant investment and are essential for water supply, drainage, slurry removal, ventilation, and methane gas removal. Among coal mining enterprises using pipelines, approximately 95% use steel pipes. The most crucial aspect of laying water and gas pipelines is the pipe-to-pipe connection. Coal mine pipeline construction commonly employs a "two-to-one" method: the pipe is cut to a specific length above ground, and then manually inserted into the loop at a specific distance from both ends of the pipe. Manual arc welding is used to complete the loop welding operation. The pipe is then transported to the underground construction site for mechanical connection, completing the laying of the long transport pipeline.

[0003] In coal mines, pipe cutting, pipe fixing, ring installation, welding, and unloading are all done manually. Furthermore, the weld quality requirements for the fixed rings at specific distances at both ends of the pipe are high, necessitating complex welding methods and processes, leading to wasted labor and time. Therefore, researching automated cutting and welding production lines to improve weld quality and speed, and employing automated pipe cutting and all-position automated welding of pipe end fixing rings, can reduce labor and time costs. This is particularly advantageous for welding small-diameter, long coal mine pipelines, making the development of automated cutting and welding production lines an urgent need in current coal mine pipeline construction. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems and provide a cutting and welding production line for coal mine pipelines.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A cutting and welding production line for coal mine pipelines includes several support frames, several push frames, a cutting device, three feeding cars, two ring-closing devices, two welding devices, two discharge cars, several rope support frames, and a control system. The push frames are arranged in a straight line at intervals to form a transport line. The support frames are evenly arranged on the left side along the transport line. A positioning plate is provided on the ground at the rear end of the transport line. The cutting device is located in the middle of the transport line. Two tracks are vertically arranged on the ground between the push frames at the tail end of the transport line, and the tracks extend to the right side of the transport line. The two ring-closing devices are symmetrically arranged on both sides of the right end of the tracks. The two welding devices are located to the right of the two ring-closing devices. Two tracks extend vertically to the right between the two ring-closing devices. Several rope support frames are evenly arranged parallel to the transport line at the right end of the tracks. One feeding car is located next to the push frame at the front of the transport line, and the other two feeding cars are located on the tracks between the push frames and the ring-closing devices. The two discharge cars are located on the tracks between the welding devices and the rope support frames.

[0007] The control system is electrically connected to the pusher, cutting device, feeding car, welding device, collar device, and discharge car, respectively.

[0008] Furthermore, the propulsion frame includes a first motor, several idler rollers, and a frame. The several idler rollers are evenly arranged between the crossbeams on the top surface of the frame. The first motor is fixed to the outside of the crossbeams on the top surface of the frame, and the output shaft of the first motor is connected to any one of the idler roller shafts.

[0009] Furthermore, the cutting device includes a pipe cutter, a first hydraulic pump station, two first hydraulic cylinders, and several first guide columns. The pipe cutter is fixed in the middle of the top plate of the cutting device, the first hydraulic pump station is fixed on the bottom plate of the cutting device, the two first hydraulic cylinders are symmetrically fixed upward on both sides of the bottom plate, and their piston rods are connected to the bottom surface of the top plate. The output oil pipe of the first hydraulic pump station is connected to the first hydraulic cylinders. The several first guide columns are set at the four corners of the bottom plate, and their upper ends are connected to the bottom plate. The bottom surface of the bottom plate of the cutting device is equipped with wheels.

[0010] Furthermore, the feeding trolley includes several first material support frames, a pallet, several second guide columns, two second hydraulic cylinders, and a second hydraulic pump station. The first material support frames are roller structures, evenly arranged on the pallet. The lower ends of the several second guide columns are fixed at the four corners of the feeding trolley's bottom plate, and the upper ends are connected to the bottom surface of the pallet. The second hydraulic pump station is set on the bottom plate. The lower ends of the two second hydraulic cylinders are fixed on both sides of the bottom plate, and the upper ends are connected to the bottom surface of the pallet. The output oil pipes of the second hydraulic cylinders and the second hydraulic pump station are connected. The bottom surface of the feeding trolley's bottom plate is equipped with wheels.

[0011] Furthermore, the top surface of the pallet of the discharge vehicle is provided with two second material support frames, and the top surface of the second material support frame is provided with an arc-shaped groove. The top of the guide column and the top of the second hydraulic cylinder of the discharge vehicle are hinged to the bottom surface of the pallet of the discharge vehicle. Other structures are the same as those of the feeding vehicle.

[0012] Furthermore, the welding device includes a welding torch, a pressure roller, a horizontal slide rail, and a vertical slide rail. The vertical slide rail is fixed on the base frame of the welding device, the horizontal slide rail is mounted on the vertical slide rail, the rolling roller is mounted on the frame that drives the pressure roller to rotate, the frame that drives the pressure roller to rotate is mounted on the horizontal slide rail, and the welding torch is mounted on the horizontal slide rail.

[0013] Furthermore, both the welding device and the collar device are provided with tracks on their bottom surfaces.

[0014] Furthermore, the collar device includes a transmission mechanism, a crank-connecting rod-slider mechanism, a push rod mechanism, a collar pushing mechanism, and a replacement ring mechanism;

[0015] The transmission mechanism includes a second motor, an output shaft, a coupling, a first transmission shaft, a reducer, a transmission chain, a drive gear, a second transmission shaft, a driven gear, a shift pin, and a lever. The second motor is fixed on the base plate of the collar device. The input shaft of the reducer is connected to the output shaft of the second motor. The output shaft of the reducer is connected to the output shaft via a coupling. The first and second transmission shafts are parallel to the output shaft. The two ends of the second transmission shaft are set on a horizontal beam above the second motor. The output shaft is connected to the first transmission shaft via a transmission chain. Both the drive gear and the driven gear are incomplete gears. The drive gear is located in the middle of the first transmission shaft, and the driven gear is located in the middle of the second transmission shaft. The drive gear and the driven gear mesh with each other. The shift pin is fixed on the side wall edge of the drive gear. The lever is fixed on the side wall of the driven gear, and the lever extends from the edge of the driven gear and overlaps with the shift pin.

[0016] The crank-connecting rod-slider mechanism includes a drive crank, a pin, a connecting rod, a grooved rod, and a slider connecting rod. The drive crank is located at the left end of the second transmission shaft. One end of the pin is hinged to the free end of the drive crank, and the other end is hinged to the connecting rod. The grooved rod is vertically mounted on the equipment base plate, with a vertical groove in the middle. The upper end of the slider connecting rod is connected to the free end of the connecting rod through a slider passing through the groove.

[0017] The top rod mechanism includes a lifting rod and a plumb bob. The lifting rod is horizontally positioned below the second transmission shaft, and a "∏"-shaped support rod is horizontally fixed on the right side. The support rod and the vertical beam of the collar device next to it are slidably connected up and down by rollers. The lifting rod is connected to the lower end of the slider connecting rod, and the slider connecting rod, the lifting rod, and the "∏"-shaped support rod are an integral structure. The plumb bob is vertically fixed in the middle of the top surface of the support rod, and the plumb bob consists of two opposing "U"-shaped structures.

[0018] The collar pushing mechanism includes several material rings, a horizontal push rod, a mold push plate, a push rod push plate, a push mold cylinder, a push rod cylinder, a push ring mold, and a tray. The tray is placed horizontally on the upper end of the right vertical beam of the collar device. The top plate of the collar device is fixed to the vertical beam of the collar device frame, and the right side of the top plate is connected to the tray via rollers. Several push rod through holes are evenly distributed in the front-back direction on the tray. The several material rings are placed vertically in the push rod through holes. The upper part of the plumb push rod passes through any one of the push rod through holes, lifting the corresponding material ring. The push mold cylinder and the push rod cylinder are horizontally fixed parallel to each other on the top plate of the collar device. The push plate is vertically fixed to the front end of the piston rod of the push rod cylinder. The mold push plate is vertically fixed to the front end of the piston rod of the push mold cylinder. The mold push plate is located in front of the push rod push plate. The push ring mold is fixed to the front end face of the mold push plate. A circular through hole is opened on the mold push plate inside the push ring mold. The upper half of the horizontal push rod is a semi-circular structure. The rear end is fixed to the push rod push plate. The front end passes through the circular through hole of the mold push plate, the push ring mold and the material ring in sequence. The top surface of the front support frame of the collar device is provided with a support roller. The support roller is located above the tray. The cut pipe is placed horizontally on the support roller, and one end of the pipe is facing the horizontal push rod.

[0019] The ring-repairing mechanism includes a double-crank connecting plate, a tray pusher, several cranks, and several crank connecting shafts. The upper end of one of the cranks is connected to the right end of the second drive shaft. The upper ends of the other cranks are set on the crossbeam on the front side of the ring-repairing device through connecting shafts. The lower ends of the several cranks are connected to the double-crank connecting plate through crank connecting shafts. The end of the crank connecting shaft is provided with an end cap. The tray pusher is fixed in the middle of the top surface of the double-crank connecting plate. Several tray shifting slots are evenly opened on the edge of the tray. When the double-crank connecting plate moves to the highest point, the tray pusher inserts into the tray shifting slot.

[0020] Furthermore, the horizontal push rod and the pipe have the same diameter, the inner diameter of the material ring and the push ring mold is equal to the outer diameter of the horizontal push rod, and the material ring, the horizontal push rod, the push ring mold and the pipe are located on the same axis.

[0021] The beneficial effects of this invention are:

[0022] 1. The crank-connecting rod-slider mechanism, push rod mechanism, collar pushing mechanism and supplementary ring mechanism of the collar device of the present invention use the same shaft as their power source, so that their rotation speed and direction are the same. Due to the different initial positions, they form misaligned operation, which can realize the collaring and pushing of the pipeline automatically without human intervention.

[0023] 2. This invention uses an automatic pipe end collar device and an all-position automatic welding device, which can realize the automated operation of pipe collar and welding, improve the forming quality and welding speed of the weld, and reduce labor and time costs. It has unique advantages, especially for welding small-diameter, long-length coal mine conveying pipelines.

[0024] 3. This invention can realize the fully automated process of conveying, cutting, ringing, welding and discharging of coal mine conveying pipelines. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the propulsion frame structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the cutting device structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the feeding cart structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the welding device structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall structure of the collar device of the present invention;

[0031] Figure 7 This is a schematic diagram of the overall structure of the transmission mechanism of the collar device of the present invention;

[0032] Figure 8 This is a first-view structural schematic diagram of the transmission mechanism of the collar device and the crank-connecting rod-slider mechanism of the present invention;

[0033] Figure 9 This is a second-view structural schematic diagram of the transmission mechanism of the collar device and the crank-connecting rod-slider mechanism of the present invention;

[0034] Figure 10 This is a schematic diagram of the top rod mechanism of the collar device of the present invention;

[0035] Figure 11 This is a schematic diagram of the active gear structure of the present invention;

[0036] Figure 12 This is a schematic diagram of the collar pushing mechanism of the collar device of the present invention;

[0037] Figure 13 for Figure 6 A magnified schematic diagram of a portion of region A in the middle;

[0038] Figure 14 A timing diagram showing the positions of the crank-connecting rod-slider mechanism and the supplementary ring mechanism;

[0039] Figure 15 This is a schematic diagram of the material discharge vehicle structure of the present invention;

[0040] Figure 16 This is a schematic diagram of the rope support structure of the present invention;

[0041] In the diagram: 1. Shelving frame; 2. Pushing frame; 3. Track; 4. Cutting device; 5. Feeding car; 6. Positioning plate; 7. Welding device; 8. Ring-locking device; 9. Discharge car; 10. Shelving rope frame; 11. Pipeline;

[0042] 2.1 First motor; 2.2 Idler roller; 2.3 Frame;

[0043] 4.1 Pipe cutting machine; 4.2 First hydraulic pump station; 4.3 First hydraulic cylinder; 4.4 First guide column;

[0044] 5.1 First feeding car; 5.2 Second feeding car; 5.3 Third feeding car; 5.4 Material support frame; 5.5 Pallet; 5.6 Second guide column; 5.7 Second hydraulic cylinder; 5.8 Second hydraulic pump station;

[0045] 7.1 Welding torch; 7.2 Pressure roller; 7.3 Horizontal slide rail; 7.4 Vertical slide rail;

[0046] 8.1 Second motor; 8.2 Output shaft; 8.3 Coupling; 8.4 First drive shaft; 8.5 Reducer; 8.6 Drive chain; 8.7 Drive gear; 8.8 Second drive shaft; 8.9 Driven gear; 8.10 Actuating pin; 8.11 Actuating lever; 8.12 Drive crank; 8.13 Pin; 8.14 Connecting rod; 8.15 Sliding rod; 8.16 Sliding block connecting rod; 8.17 Lifting rod; 8.18 Plumb bob. 8.19 Material ring; 8.20 Horizontal ejector pin; 8.21 Mold push plate; 8.22 Ejector pin push plate; 8.23 ​​Ejector cylinder; 8.24 Ejector pin cylinder; 8.25 Ejector ring mold; 8.26 Top plate; 8.27 Tray; 8.28 Ejector pin through hole; 8.29 Tray transfer groove; 8.30 Support roller; 8.31 Double crank connecting plate; 8.32 Tray push block; 8.33 Crank; 8.34 Crank connecting shaft; 8.35 End cap;

[0047] 9.1 First discharge car; 9.2 Second discharge car; 9.3 Second receiving rack;

[0048] A. Locking arc; B. Mapping position 1; C. Mapping position 2; D. Mapping position 3. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the embodiments.

[0050] like Figure 1 As shown, a cutting and welding production line for coal mine pipelines includes several support frames 1, several pusher frames 2, a cutting device 4, three feeding cars 5, two ring-welding devices 8, two welding devices 7, two discharge cars 9, several support rope frames 10, and a control system. The pusher frames 2 are arranged in a straight line at intervals to form a transport line. The support frames 1 are evenly arranged on the left side along the transport line. A positioning plate 6 is provided on the ground at the rear end of the transport line. The cutting device 4 is located in the middle of the transport line. Two tracks 3 are vertically arranged on the ground between the pusher frames 2 at the tail end of the transport line, and the tracks 3 extend to the right side of the transport line. The two ring-welding devices... The two welding devices 7 are symmetrically arranged on both sides of the right end of the track 3. The two ring devices 8 are located on the right side of the two ring devices 8. Two tracks 3 extend vertically to the right between the two ring devices 8. Several rope support frames 10 are evenly arranged at the right end of the track 3 parallel to the transport line. One feeding car 5 is located next to the push frame 2 at the front of the transport line. The other two feeding cars 5 are located on the track 3 between the push frame 2 and the ring device 8. The two discharging cars 9 are located on the track 3 between the welding device 7 and the rope support frame 10. The control system is electrically connected to the push frame 2, the cutting device 4, the feeding car 5, the welding device 7, the ring device 8, and the discharging car 9.

[0051] like Figure 2 As shown, the pusher frame 2 includes a first motor 2.1, a plurality of idlers 2.2 and a frame 2.3. The plurality of idlers 2.2 are evenly arranged between the top crossbeams of the frame 2.3. The first motor 2.1 is fixed on the outside of the top crossbeam of the frame 2.3, and the output shaft of the first motor 2.1 is connected to the shaft of any one of the idlers 2.2.

[0052] like Figure 3As shown, the cutting device 4 includes a pipe cutter 4.1, a first hydraulic pump station 4.2, two first hydraulic cylinders 4.3, and four first guide columns 4.4. The pipe cutter 4.1 is fixed in the middle of the top plate of the cutting device 4. The first hydraulic pump station 4.2 is fixed on the bottom plate of the cutting device 4. The two first hydraulic cylinders 4.3 are symmetrically fixed upward on both sides of the bottom plate, and their piston rods are connected to the bottom surface of the top plate. The output oil pipe of the first hydraulic pump station 4.2 is connected to the first hydraulic cylinders 4.3. The four first guide columns 4.4 are located at the four corners of the bottom plate, and their upper ends are connected to the bottom plate. The bottom surface of the cutting device 4 is equipped with wheels.

[0053] like Figure 4 , 15 As shown, the feeding trolley 5 includes four first material support frames 5.4, a pallet 5.5, four second guide columns 5.6, two second hydraulic cylinders 5.7, and a second hydraulic pump station 5.8. The first material support frames 5.4 are roller structures, evenly arranged on the pallet 5.5. The lower ends of the four second guide columns 5.6 are fixed to the four corners of the bottom plate of the feeding trolley 5, and the upper ends are connected to the bottom surface of the pallet 5.5. The second hydraulic pump station 5.8 is mounted on the bottom plate. The two second hydraulic cylinders 5.7... The lower end is fixed to both sides of the base plate, and the upper end is connected to the bottom surface of the support plate 5.5. The output oil pipe of the second hydraulic cylinder 5.7 is connected to the output oil pipe of the second hydraulic pump station 5.8. The bottom surface of the base plate of the feeding car 5 is equipped with wheels. The top surface of the support plate of the discharging car 9 is equipped with two second material support frames 9.3. The top surface of the second material support frame 9.3 has an arc-shaped groove in the middle. The top of the guide column and the top of the second hydraulic cylinder of the discharging car 9 are hinged to the bottom surface of the support plate of the discharging car. Other structures are the same as those of the feeding car 5.

[0054] like Figure 5 As shown, the welding device 7 includes a welding torch 7.1, a pressure roller 7.2, a horizontal slide rail 7.3, and a vertical slide rail 7.4. The vertical slide rail 7.4 is fixed on the base frame of the welding device 7, the horizontal slide rail 7.3 is arranged on the vertical slide rail 7.4, the roller 7.2 is mounted on the frame that drives the pressure roller to rotate, the frame that drives the pressure roller to rotate is arranged on the horizontal slide rail 7.3, the welding torch 7.1 is arranged on the horizontal slide rail 7.3, and a track 3 is provided on the bottom surface of the welding device 7.

[0055] like Figure 6 As shown, the collar device 8 includes a transmission mechanism, a crank connecting rod slider mechanism, a push rod mechanism, a collar pushing mechanism, and a replenishing ring mechanism. A track 3 is provided on the bottom surface of the collar device 8.

[0056] like Figure 7 , 11As shown, the transmission mechanism includes a second motor 8.1, an output shaft 8.2, a coupling 8.3, a first transmission shaft 8.4, a reducer 8.5, a transmission chain 8.6, a driving gear 8.7, a second transmission shaft 8.8, a driven gear 8.9, a pivot pin 8.10, and a lever 8.11. The second motor 8.1 is fixed to the base plate of the collar device 8. The input shaft of the reducer 8.5 is connected to the output shaft of the second motor 8.1. The output shaft of the reducer 8.5 is connected to the output shaft 8.2 via the coupling 8.3. The first transmission shaft 8.4 and the second transmission shaft 8.8 are parallel to the output shaft 8.2. The two ends of the second transmission shaft 8.8 are set on a horizontal beam above the second motor 8.1. The output shaft 8.2 is connected to the first transmission shaft 8.4 via the transmission chain 8.6. Both the driving gear 8.7 and the driven gear 8.9 are incomplete gears. The driving gear 8.7 is... The driven gear 8.9 is located in the middle of the first transmission shaft 8.4, and the driven gear 8.9 is located in the middle of the second transmission shaft 8.8. The driving gear 8.7 and the driven gear 8.9 mesh with each other. The actuating pin 8.10 is fixed to the side wall edge of the driving gear 8.7, and the lever 8.11 is fixed to the side wall of the driven gear 8.9. The lever 8.11 extends from the edge of the driven gear 8.9 and engages with the actuating pin 8.10. When the driven gear 8.9 stops for a preset time, the lever 8.11 actuates the pin 8.10 to rotate together, pushing the driven gear 8.9 to rotate. When the driving gear 8.7 rotates to the meshing position again, the toothed part of the driven gear 8.9 can mesh with the toothed part of the driving gear 8.7 again and continue to mesh and rotate. This incomplete gear design is such that the driven gear 8.9 rotates one revolution for every revolution of the driving gear 8.7, preventing the continuity of the entire system's operation.

[0057] like Figure 8-9 As shown, the crank-connecting rod-slider mechanism includes a drive crank 8.12, a pin 8.13, a connecting rod 8.14, a grooved rod 8.15, and a slider connecting rod 8.16. The drive crank 8.12 is located at the left end of the second transmission shaft 8.8. One end of the pin 8.13 is hinged to the free end of the drive crank 8.12, and the other end is hinged to the connecting rod 8.14. The grooved rod 8.15 is vertically mounted on the equipment base plate, with a vertical groove in the middle. The upper end of the slider connecting rod 8.16 is connected to the free end of the connecting rod 8.14 through a slider passing through the groove.

[0058] like Figure 10As shown, the push rod mechanism includes a lifting rod 8.17 and a plumb bob 8.18. The lifting rod 8.17 is horizontally positioned below the second transmission shaft 8.8, and a "∏"-shaped support rod is horizontally fixed on its right side. The support rod is slidably connected to the vertical beam of the adjacent collar device 8 via rollers. The lifting rod 8.17 is connected to the lower end of the slider connecting rod 8.16, and the slider connecting rod 8.16, the lifting rod 8.17, and the "∏"-shaped support rod are an integral structure. The plumb bob 8.18 is vertically fixed in the middle of the top surface of the support rod, and the plumb bob 8.18 consists of two opposing "U"-shaped structures.

[0059] like Figure 12 As shown, the collar pushing mechanism includes several material rings 8.19, a horizontal push rod 8.20, a mold push plate 8.21, a push rod push plate 8.22, a mold push cylinder 8.23, a push rod cylinder 8.24, a collar push mold 8.25, and a tray 8.27. The tray 8.27 is horizontally placed on the upper end of the right vertical beam of the collar device 8. The top plate 8.26 of the collar device 8 is fixed to the four vertical beams of the frame of the collar device 8, and the right side of the top plate 8.26 is connected to the tray 8.27 via rollers. A plurality of push rod through holes 8.28 are evenly provided in the front-to-back direction. A plurality of material rings 8.19 are vertically placed within the push rod through holes 8.28. The upper part of the plumb push rod 8.18 passes through any one of the push rod through holes 8.28, lifting the corresponding material ring 8.19. The mold push cylinder 8.23 ​​and the push rod cylinder 8.24 are horizontally and parallelly fixed on the top plate 8.26 of the collar device 8. The push rod push plate 8.22 is vertically fixed at the front end of the piston rod of the push rod cylinder 8.24. The mold push plate 8.21 is vertically fixed on... The piston rod of the ejector cylinder 8.23 ​​has its front end facing the mold push plate 8.21, which is located in front of the push rod push plate 8.22. The push ring mold 8.25 is fixed on the front end face of the mold push plate 8.21. A circular through hole is provided on the mold push plate 8.21 inside the push ring mold 8.25. The upper half of the horizontal push rod 8.20 has a semi-circular structure. The inner diameter of the material ring 8.19 and the push ring mold 8.25 is equal to the outer diameter of the horizontal push rod 8.20. The rear end is fixed on the push rod push plate 8.22, and the front end passes through the mold push plate 8.22 in sequence. The circular perforation of plate 8.21, push ring mold 8.25, and material ring 8.19, horizontal push rod 8.20 and pipe 11 have the same diameter, and the material ring 8.19, horizontal push rod 8.20, push ring mold 8.25 and pipe 11 are located on the same axis. The top surface of the front support frame of the collar device 8 is provided with support roller 8.30, and the support roller 8.30 is located above the tray 8.27. The cut pipe 11 is placed horizontally on the support roller 8.30, and one end of the pipe 11 is directly facing the horizontal push rod 8.20.

[0060] like Figure 13As shown, the ring-repairing mechanism includes a double-crank connecting plate 8.31, a tray pusher 8.32, three cranks 8.33, and three crank connecting shafts 8.34. The upper end of one of the cranks 8.33 is connected to the right end of the second transmission shaft 8.8. The upper ends of the other two cranks 8.33 are set on the crossbeam on the front side of the collar device 8 via connecting shafts. The lower ends of the three cranks 8.33 are connected to the double-crank connecting plate 8.31 via crank connecting shafts 8.34. The end of the crank connecting shaft 8.34 is provided with an end cap 8.35. The tray pusher 8.32 is fixed in the middle of the top surface of the double-crank connecting plate 8.31. The edge of the tray 8.27 is evenly provided with several tray shifting grooves 8.29. When the double-crank connecting plate 8.31 moves to the highest point, the tray pusher 8.32 is inserted into the tray shifting grooves 8.29.

[0061] like Figure 14 The diagram shows the timing of the positions of the push rod mechanism and the ring-closing mechanism. The light-colored line represents the position of the plumb bob, and the dark-colored line represents the position of the pallet push rod. Since the power source is the second drive shaft 8.8, the rotation speed and direction are the same. The misalignment is only due to the different initial positions, which can realize the automation of the pipe's ring-closing and forward propulsion without human intervention.

[0062] like Figure 16 The diagram shown is a schematic diagram of the structure of the rope support frame 10.

[0063] The working process of this invention is as follows:

[0064] The welding devices 7 and collar devices 8 on both sides of the moving track 3 are adjusted so that their distance is adapted to the length of the pre-cut pipe 11;

[0065] Place the pipe 11 to be cut on the shelf 1, start the feeding car 5, move the second feeding car 5.2 next to the shelf 1, move the first feeding car 5.1 and the second feeding car 5.2 to the bottom of the pipe 11 on the shelf 1, start the second hydraulic pump station 5.8, extend the piston rod of the second hydraulic cylinder 5.7 to lift the pallet 5.5, so that the first material support frame 5.4 on both sides lifts the pipe, then move the first feeding car 5.1 and the second feeding car 5.2 to place the pipe 11 on the push frame 2 along the transport line direction, and then move the second feeding car 5.2 to the track 3 between the push frame 2 and the collar device 8;

[0066] Start the first motor 2.1 to make the roller 2.2 rotate, which drives the pipe 11 to move backward. When the rear end face of the pipe 11 hits the positioning plate 6, stop moving. Move the cutting device 4 to the cutting position of the pipe. Start the second feeding car 5.2 and the third feeding car 5.3 to move along the track 3 between the push frame 2 and the collar device 8 to the vicinity of the push frame 2.

[0067] During the cutting operation, the cutting device 4 is first fine-tuned so that the pipe cutter 4.1 is aligned with the pipe cutting point. The first hydraulic pump station 4.2 is started, and the piston rod of the first hydraulic cylinder 4.3 extends to lift its top plate. At the same time, the cutting device 4 moves to the left. When the leftward movement is completed, the roller of the pipe cutter is a certain distance from the pipe 11. The top plate continues to rise to support the pipe. The propulsion mechanism on the side plays an auxiliary support role. The pipe cutter 4.1 is started, and the pipe cutter head presses down to cut the pipe 11 into two sections. Then the pipe cutter head is lifted, the first hydraulic cylinder 4.3 retracts, and the pipe cutter 4.1 is lowered. The cut pipe 11 is placed on the support roller 2.2. After the pipe cutter 4.1 is lowered to a certain position, the cutting device 4 moves to the right away from the pipe. The second feeding car 5.2 and the third feeding car 5.3 are started to transport it away. The cut pipe with the front end placed on the support roller 2.2 continues to move backward. When the pipe 11 hits the positioning plate 6, the movement stops.

[0068] The second and third feed cars 5.2 and 5.3 on track 3 move to below the pipe 11, start the second hydraulic pump station 5.8, extend the piston rod of the second hydraulic cylinder 5.7 to lift the pallet 5.5, so that the first support frame 5.4 lifts the pipe. The two feed cars 5.2 and 5.3 move synchronously to the right along track 3 and stop when they reach the collar device 8. The second and third feed cars 5.2 and 5.3 continue to move to the right, and then the pallet 5.5 is lowered to place the pipe 11 on the support rollers 8.30 of the two collar devices 8. After continuing to descend and disengage from the pipe, the second and third feed cars 5.2 and 5.3 move to the left and return to the vicinity of the push frame 2 to stop, waiting to enter the next working cycle.

[0069] The second motor 8.1 is started. The second motor drives the reducer 8.5 through the coupling 8.3, which in turn drives the output shaft 8.2 to rotate. The output shaft 8.2 drives the first transmission shaft 8.4 to rotate through the transmission chain 8.6. The driving gear 8.7 rotates accordingly. Since both the driving gear 8.7 and the driven gear 8.9 are incomplete gears, when their toothed parts are meshed, they drive the second transmission shaft 8.8 to rotate. When the driving gear 8.7 and the driven gear 8.9 disengage, the driven gear 8.9 and the second transmission shaft 8.8 remain stationary. Through the driving gear 8.7 and the driven gear 8.9, the intermittent movement of the driven gear 8.9 and the second transmission shaft 8.8 is achieved.

[0070] Based on the structural characteristics of the incomplete gear mechanism, when the toothed part of the driving gear 8.7 meshes with the driven gear 8.9, it drives the driven gear 8.9 to rotate; when the toothed part of the driving gear 8.7 disengages from the driven gear 8.9, the driven gear 8.9 remains stationary. When the driving gear 8.7 rotates continuously, the driven gear 8.9 obtains intermittent motion. However, when the toothed part of the driving gear 8.7 rotates to the position of the driven gear 8.9 again, because the driven gear 8.9 remains stationary, the toothed part cannot mesh. Therefore, in the case of the incomplete gear mechanism... The driven gear 8.7 and the driven gear 8.9 are equipped with a pivot pin 8.10 and a lever 8.11. When the pause time reaches the preset time, the lever 8.11 drives the pivot pin 8.10 to rotate together, pushing the driven gear 8.9 to rotate. When the toothed part of the driving gear 8.7 rotates to the meshing position again, the toothed part of the driven gear 8.9 can mesh with the toothed part of the driving gear 8.7 again and continue to mesh and rotate. This incomplete gear design is such that for every rotation of the driving gear 8.7, the driven gear 8.9 also rotates one revolution.

[0071] When the gears are not fully engaged, the second transmission shaft 8.8 drives the drive crank 8.12 to rotate. The drive crank 8.12 drives the connecting rod 8.14 to move through the pin 8.13. The connecting rod 8.14 drives the slider connecting rod 8.16 to slide up and down in the groove of the slide bar 8.15, thereby driving the lifting rod 8.17 and the plumb bob 8.18 to slide up and down. The plumb bob 8.18 slides upward and stops when it lifts the material ring 8.19 to the highest point.

[0072] Start the push rod cylinder 8.21 to push the push rod plate 8.22 and the horizontal push rod 8.20 forward. The horizontal push rod 8.20 passes through the push ring mold 8.25 and the material ring 8.19 in sequence until the front end stops when it hits the end of the pipe 11. Then the drive gear 8.7 meshes with the driven gear 8.9, driving the plumb push rod 8.18 to slide downward and disengage from the material ring 8.19. Then the push mold cylinder 8.23 ​​pushes the mold push plate 8.21 and the push ring mold 8.25 forward. The push ring mold 8.25 pushes the material ring 8.19 forward along the horizontal push rod 8.20 until the material ring 8.19 reaches and is fitted onto the predetermined welding position on the outer wall of the pipe 11. Then the push mold cylinder 8.23 ​​and the push rod cylinder 8.24 return to their original positions.

[0073] When the second drive shaft 8.8 rotates, it simultaneously drives the supplementary ring mechanism to operate, and the crank 8.33 rotates accordingly. Through the crank connecting shaft 8.34, it drives the double crank connecting plate 8.31 to perform circular motion. When the plumb bob 8.18 moves to the lowest point, the pallet pusher 8.32 moves to the highest point and inserts into the pallet shifting groove 8.29. The pallet pusher 8.32 continues to move, pushing the pallet 8.27 forward. The distance it moves is exactly equal to the distance between the adjacent pusher hole 8.28. At this time, the next pusher hole 8.28 and the placed material ring 8.19 move exactly above the plumb bob 8.18. The pallet pusher 8.32 moves away from the pallet shifting groove 8.29 and enters the next cycle.

[0074] The collaring devices 8 on both sides of the pipe 11 simultaneously perform collaring operations at both ends. After the collaring operation is completed, welding is performed. The pressure roller 7.2 is moved above the pipe 11 via the vertical slide rail 7.4 and the horizontal slide rail 7.3. The pressure roller frame drives the pressure roller 7.2 to descend along the vertical slide rail 7.4, pressing down on the pipe 11. The position and angle of the welding gun 7.1 are adjusted so that it is aligned with the weld seam inside the material ring 8.19. The pressure roller 7.2 starts to rotate, driving the pipe 11 to rotate and perform welding. After welding is completed, the pressure roller 7.2 and the welding gun 7.1 are withdrawn, and the welding device 7 moves to both sides and returns to the initial position.

[0075] After the welding operation is completed, the first discharge carriage 9.1 and the second discharge carriage 9.2 move along the track 3 to below the pipe 11. The second support frame 9.3 is lifted by the hydraulic cylinder. The pipe 11 is placed in the arc groove of the second support frame 9.3 and lifted up. It moves to the right along the track and moves the pipe 11 to the side of the rope support frame 10. At this time, the hydraulic cylinder on the side closer to the rope support frame 10 descends and the hydraulic cylinder on the side farther away ascends, causing the pallet to tilt towards the side of the rope support frame 10. The pipe 11 rolls down from the arc groove onto the rope support frame 10, completing the discharge operation.

[0076] by Figure 11Taking the clockwise rotation of the driving gear as an example, when the meshing position of the driving gear 8.7 and the driven gear 8.9 is at the mapped position 1B, the entire mechanism stops moving. At this time, the plumb bob 8.18 is at its highest point and the double crank connecting plate 8.31 is at its lowest point. During the locking arc A segment, the relative positions of the plumb bob 8.18 and the double crank connecting plate 8.31 remain unchanged. At the mapped position 3D, the entire mechanism begins to move, the plumb bob 8.18 begins to descend, and the double crank connecting plate 8.31 begins to rise. At the mapped position 2C... The plumb bob 8.18 and the double crank connecting plate 8.31 simultaneously completed their switching from the highest point to the lowest point. The plumb bob 8.18 moved to the lowest point, and the double crank connecting plate 8.31 moved to the highest point. By concentrating one revolution of the driven gear 8.9 on one side of the driving gear 8.7, the length of the locking arc A was extended, providing a longer action time for the ring push mechanism to move the ring. This avoided forcing the lower transmission mechanism to stop due to the ring push mechanism's ring-moving process, and halved the number of stops required for the second motor 8.1.

[0077] In this invention, unless otherwise explicitly specified and limited, the terms "left," "right," "front," and "back" of the first feature relative to the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact, but through another feature between them. Furthermore, the relative orientation of the first feature to the second feature is determined by the direction indicated by the pointer in the figure.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting and welding production line for coal mine pipelines, characterized in that, It includes several shelving frames, several pusher frames, a cutting device, three feeding cars, two ferrule devices, two welding devices, two discharge cars, several shelving rope frames, and a control system. Several pusher frames are arranged in a straight line at intervals to form a transport line. Several shelving frames are evenly arranged on the left side along the transport line. A positioning plate is provided on the ground at the rear end of the transport line. The cutting device is located in the middle of the transport line. Two tracks are vertically arranged on the ground between the pusher frames at the rear of the transport line. The tracks extend to the right side of the transport line. Two ferrule devices are symmetrically arranged on both sides of the right end of the tracks. Two welding devices are located on the right side of the two ferrule devices. Two tracks extend vertically to the right between the two ferrule devices. Several shelving rope frames are evenly arranged parallel to the transport line at the right end of the tracks. One feeding car is located next to the pusher frame at the front of the transport line. The other two feeding cars are located on the tracks between the pusher frames and the ferrule devices. The two discharge cars are located on the tracks between the welding devices and the shelving rope frames. The collar device includes a transmission mechanism, a crank-connecting rod-slider mechanism, a push rod mechanism, a collar pushing mechanism, and a replacement ring mechanism; The transmission mechanism includes a second motor, an output shaft, a coupling, a first transmission shaft, a reducer, a transmission chain, a drive gear, a second transmission shaft, a driven gear, a shift pin, and a lever. The second motor is fixed on the base plate of the collar device. The input shaft of the reducer is connected to the output shaft of the second motor. The output shaft of the reducer is connected to the output shaft through a coupling. The first and second transmission shafts are parallel to the output shaft. The two ends of the second transmission shaft are set on a horizontal beam above the second motor. The output shaft is connected to the first transmission shaft through a transmission chain. Both the drive gear and the driven gear are incomplete gears. The drive gear is located in the middle of the first transmission shaft, and the driven gear is located in the middle of the second transmission shaft. The drive gear and the driven gear mesh with each other. The shift pin is fixed on the side wall edge of the drive gear, and the lever is fixed on the side wall of the driven gear. The lever extends from the edge of the driven gear and overlaps with the shift pin. The crank-connecting rod-slider mechanism includes a drive crank, a pin, a connecting rod, a groove rod, and a slider connecting rod. The drive crank is located at the left end of the second transmission shaft. One end of the pin is hinged to the free end of the drive crank, and the other end is hinged to the connecting rod. The groove rod is vertically mounted on the equipment base plate, with a vertical groove in the middle. The upper end of the slider connecting rod is connected to the free end of the connecting rod through the groove via a slider. The push rod mechanism includes a lifting rod and a plumb bob. The lifting rod is horizontally positioned below the second drive shaft, and a "∏"-shaped support rod is horizontally fixed on the right side. The support rod and the vertical beam of the collar device next to it are connected up and down by rollers. The lifting rod is connected to the lower end of the slider connecting rod, and the slider connecting rod, the lifting rod, and the "∏"-shaped support rod are an integral structure. The plumb bob is vertically fixed in the middle of the top surface of the support rod, and the plumb bob is two oppositely arranged "U"-shaped structures. The collar pushing mechanism includes several material rings, horizontal push rods, a mold push plate, a push rod push plate, a mold cylinder, a push rod cylinder, a collar push mold, and a tray. The tray is placed horizontally on the upper end of the right vertical beam of the collar device. The top plate of the collar device is fixed to the vertical beam of the collar device frame, and the right side of the top plate is connected to the tray via rollers. Several push rod through holes are evenly opened in the front-back direction on the tray. Several material rings are placed vertically in the push rod through holes. The upper part of the plumb push rod passes through any one of the push rod through holes, lifting the corresponding material ring. The mold cylinder and the push rod cylinder are horizontally fixed parallel to each other on the top plate of the collar device. The piston rod of the push rod cylinder is vertically fixed at the front end of the piston rod. The mold push plate is vertically fixed at the front end of the piston rod of the push mold cylinder. The mold push plate is located in front of the push rod push plate. The push ring mold is fixed on the front end face of the mold push plate. The mold push plate inside the push ring mold has a circular through hole. The upper half of the horizontal push rod is a semi-circular structure. The rear end is fixed on the push rod push plate. The front end passes through the circular through hole of the mold push plate, the push ring mold and the material ring in sequence. The top surface of the front support frame of the collar device is equipped with a support roller, and the support roller is located above the tray. The cut pipe is placed horizontally on the support roller, and one end of the pipe is facing the horizontal push rod. The ring-repairing mechanism includes a double-crank connecting plate, a tray pusher, several cranks, and several crank connecting shafts. The upper end of one crank is connected to the right end of the second drive shaft. The upper ends of the other cranks are set on the crossbeam on the front side of the ring-repairing device through connecting shafts. The lower ends of several cranks are connected to the double-crank connecting plate through crank connecting shafts. The end of the crank connecting shaft is provided with an end cap. The tray pusher is fixed in the middle of the top surface of the double-crank connecting plate. Several tray shifting slots are evenly opened on the edge of the tray. When the double-crank connecting plate moves to the highest point, the tray pusher inserts into the tray shifting slot.

2. The cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The pusher frame includes a first motor, several idler rollers, and a frame. The several idler rollers are evenly arranged between the crossbeams on the top surface of the frame. The first motor is fixed on the outside of the crossbeams on the top surface of the frame, and the output shaft of the first motor is connected to any one of the idler roller shafts.

3. The cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The cutting device includes a pipe cutter, a first hydraulic pump station, two first hydraulic cylinders, and several first guide columns. The pipe cutter is fixed in the middle of the top plate of the cutting device. The first hydraulic pump station is fixed on the bottom plate of the cutting device. The two first hydraulic cylinders are symmetrically fixed upward on both sides of the bottom plate, and their piston rods are connected to the bottom surface of the top plate. The output oil pipe of the first hydraulic pump station is connected to the first hydraulic cylinders. Several first guide columns are set at the four corners of the bottom plate, and their upper ends are connected to the bottom plate. Wheels are provided on the bottom surface of the bottom plate of the cutting device.

4. The cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The feeding car includes several first material support frames, pallets, several second guide columns, two second hydraulic cylinders, and a second hydraulic pump station. The first material support frames are roller structures, evenly arranged on the pallets. The lower ends of the several second guide columns are fixed at the four corners of the feeding car's bottom plate, and the upper ends are connected to the bottom surface of the pallets. The second hydraulic pump station is set on the bottom plate. The lower ends of the two second hydraulic cylinders are fixed on both sides of the bottom plate, and the upper ends are connected to the bottom surface of the pallets. The output oil pipes of the second hydraulic cylinders and the second hydraulic pump station are connected. The bottom surface of the feeding car's bottom plate is equipped with wheels.

5. A cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The top surface of the pallet of the discharge vehicle is equipped with two second material support frames. The top surface of the second material support frame has an arc-shaped groove in the middle. The top of the guide column and the top of the second hydraulic cylinder of the discharge vehicle are hinged to the bottom surface of the pallet of the discharge vehicle.

6. A cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The welding device includes a welding torch, a pressure roller, a horizontal slide rail, and a vertical slide rail. The vertical slide rail is fixed on the base frame of the welding device, the horizontal slide rail is set on the vertical slide rail, the pressure roller is mounted on the frame that drives the pressure roller to rotate, the frame that drives the pressure roller to rotate is set on the horizontal slide rail, and the welding torch is set on the horizontal slide rail.

7. A cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, Both the welding device and the collar device have tracks on their bottom surfaces.

8. A cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The horizontal push rod and the pipe have the same diameter, the inner diameter of the material ring and the push ring mold is equal to the outer diameter of the horizontal push rod, and the material ring, the horizontal push rod, the push ring mold and the pipe are located on the same axis.

9. A cutting and welding production line for coal mine pipelines according to claim 1, characterized in that, The control system is electrically connected to the pusher, cutting device, feeding car, welding device, collar device, and discharge car, respectively.

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