An automatic surfacing repair machine for pipe pile and pipe mold running wheels

Abstract

The invention discloses an automatic surfacing welding repair machine for a pipe pile and pipe mold wheel, comprising a machine base, steel rails are arranged in parallel on the front and rear sides of the machine base, a tail frame is arranged on the left side of the two steel rails, a frame is fixedly arranged on the right side of the machine base, automatic centering chucks are connected to the opposite shafts on the frame and the tail frame, a pipe mold wheel to be welded is clamped between the two automatic centering chucks, two steel rails extend to the right side to the frame, a main shaft is connected to the shaft on the frame, a carbon brush plate assembly and a main transmission mechanism are arranged on the left and right sides of the main shaft, the main shaft passes through the carbon brush plate assembly and extends to the left, an automatic centering chuck is fixed to the end extending out of the frame, the main transmission mechanism drives the automatic centering chuck on the right side to rotate, thereby driving the pipe mold wheel to rotate; the welding gun can avoid the pipe mold hoisting by rotating 90 degrees, and the cylinder can be ventilated during clamping to automatically align and clamp, and multiple pipe mold wheels can be automatically surfacing welded at the same time.

Description

Technical Field

[0001] The invention relates to the field of pipe mold running wheel welding, and in particular to an automatic surfacing welding repair machine for a pipe pile and pipe mold running wheel. Background Art

[0002] The centrifugal forming of pipe piles is a process in which the pipe mold is driven by the centrifuge to rotate through friction transmission through the outer circle of the pipe mold running wheel and the centrifuge running wheel, and then the pipe mold is rotated in four stages, namely low speed, low medium speed, medium speed and high speed. In this way, the outer circle surface of the pipe mold running wheel will continue to wear during the centrifugal process. When the wear reaches a certain level, the running wheel thickness will become thinner, the bearing capacity will decrease, and there is a risk of collapse and damage. In addition, the uneven wear of the running wheel will turn into an elliptical shape, causing the pipe mold to jump violently during rotation. In severe cases, the pipe mold will fly out, which poses a great safety hazard. At this time, the pipe mold running wheel needs to be repaired so that its outer circle diameter and outer circle roundness reach the set value.

[0003] Most of the existing pipe mold running wheel repair methods are still completed manually, with welders manually surfacing the outer surface of the pipe mold running wheel, and then using a lathe to turn the outer surface of the running wheel after surfacing is completed, so that the running wheel forms a smooth surface to achieve the repair effect. However, manual surfacing repair has high labor intensity and low work efficiency. Welding fumes and arc light cause occupational harm to people, and the skill proficiency of welders is extremely high. In order to repair the pipe mold running wheel to a smooth surface and ensure the roundness of the outer circle, sufficient margin must be reserved for lathe turning. However, the thickness of manual surfacing is uneven, and it is difficult to detect and ensure the outer roundness of the pipe mold running wheel, resulting in the need to increase the thickness of the surfacing to ensure sufficient turning margin, which leads to an increase in workload, further reduces work efficiency, and causes serious waste.

[0004] In order to solve the above-mentioned problems, the present invention designs an automatic surfacing welding repair machine for pipe pile and pipe mold running wheels. The welding gun can be rotated 90 degrees to avoid the pipe mold lifting. When clamping, the cylinder can be ventilated to automatically align and clamp. Multiple pipe mold running wheels can be automatically surfacing welded at the same time. After surfacing one layer, the welding gun automatically steps forward to weld the next layer. After surfacing one layer, the welding gun automatically rises to a higher height and moves back and forth in the opposite direction to surfacing the next layer. The operation is simple, the degree of automation is high, and the efficiency is high. Summary of the invention

[0005] In order to solve the problems existing in the surfacing welding of the running wheels of pipe piles and pipe molds mentioned in the above background technology, the present invention provides an automatic surfacing welding repair machine for the running wheels of pipe piles and pipe molds. The technical solution adopted by the present invention is as follows:

[0006] An automatic surfacing welding repair machine for a pipe pile and pipe mold wheel, comprising a machine base, steel rails are arranged in parallel on the front and rear sides of the machine base, a tailstock is slidably arranged on the left side of the two steel rails, a frame is fixedly arranged on the right side of the machine base, automatic centering chucks are arranged on the opposite shafts on the frame and the tailstock, a pipe mold wheel to be welded is clamped between the two automatic centering chucks, the two steel rails extend to the right side to the frame, a main shaft is connected to the shaft on the frame, a carbon brush plate assembly and a main transmission mechanism are arranged on the left and right sides of the main shaft respectively, the main shaft passes through the carbon brush plate assembly and extends to the left, the automatic centering chuck is fixed on the end extending out of the frame, the main transmission mechanism drives the automatic centering chuck on the right side to rotate, thereby driving the pipe mold wheel to rotate;

[0007] A crossbeam is fixed on the side of the machine base, a slide rail is fixed on the upper side of the crossbeam, the welding gun mechanism is slidably connected with the slide rail, the welding gun mechanism extends to the upper end of the tube mold running wheel, and a wire feeder is slidably provided on the steel rail arranged on the side of the crossbeam, and the wire feeder is used to convey the wire tube for the welding gun mechanism;

[0008] The automatic centering chuck comprises a chuck, the outer side of the chuck is symmetrically provided with a chuck hole, the left end of the spindle is fixed at the inner center of the chuck, the spindle is provided with a pneumatic slip ring near the chuck, and the chuck is provided with a centering jaw mechanism;

[0009] The centering clamp mechanism includes a rotating disk, a connecting rod, a centering clamp and a cylinder. The rotating disk is fixed on the main shaft and is located between the chuck and the pneumatic slip ring. A plurality of connecting rods are symmetrically hinged on the upper end of the rotating disk. The other end of the connecting rod is hinged with a centering clamp. The two ends of the cylinder are connected to any two non-adjacent centering clamps. The centering clamp is provided with a U-shaped slot, which is clamped in the clamp hole so that the centering clamp can only slide toward the center or outer diameter of the chuck.

[0010] The pneumatic slip ring is connected to an external air source. After the cylinder is ventilated, the piston rod is extended and retracted to lengthen or shorten the entire cylinder, thereby pushing the centering clamping claws to open outward or tighten inward, thereby achieving the clamping and loosening of the pipe mold running wheel.

[0011] Furthermore, the carbon brush disc assembly includes a carbon brush holder, a carbon brush disc, a carbon brush and an insulating gasket. The carbon brush holder is fixed to the left side of the upper end of the frame through the insulating gasket. The main shaft is movably installed on the carbon brush holder. The main shaft is fixedly installed on the carbon brush disc. The carbon brush disc is located in the carbon brush holder. The carbon brush is fixed to the inner wall of the carbon brush holder. The carbon brush is elastically in contact with the carbon brush disc.

[0012] Furthermore, the main transmission mechanism includes a pulley, a main motor and a belt. The pulley is fixed on the right side of the main shaft and located on the right side of the upper end of the frame. A main motor is provided on the side of the frame. The power output end of the main motor is connected to the pulley through a belt. A stepper probe for detecting the number of rotations of the pulley is provided on the frame near the pulley.

[0013] Furthermore, the welding gun mechanism includes a base, the base is slidably connected to the cross beam, an outer cylinder is fixed at the lower end of the base, a lifting screw is rotatably provided in the outer cylinder, the lifting screw extends upward and movably passes through the outer cylinder and the base, a first power mechanism is provided at the upper end of the base, the first power mechanism is transmission-connected with the lifting screw, a lifting sleeve is sleeved on the outer side of the outer cylinder, the inner cylinder is slidably provided in the outer cylinder, the inner cylinder is screwed with the lifting screw, a vertical hole is vertically opened on the side surface of the outer cylinder, the inner cylinder is fixedly connected to the lifting sleeve through a connecting block passing through the vertical hole, the first power mechanism drives the lifting screw to rotate, thereby driving the lifting sleeve to move up and down along the outer cylinder through the inner cylinder;

[0014] A swivel seat is embedded on the outer circumference of the lifting sleeve, and the swivel seat can rotate along the outer circumference of the lifting sleeve, and a set screw is provided on the swivel seat located on the outer side of the lifting sleeve, and a traverse screw rod is connected to the swivel seat on the other side shaft opposite to the set screw, and a traverse sliding rod is fixed on the swivel seat at the upper and lower sides of the traverse screw rod, and a traverse sliding block is commonly provided on the traverse sliding block and the traverse sliding block is screwed with the traverse screw rod and slidably connected with the two traverse sliding rods. Two stroke probes are fixed on the upper end of the swivel seat, and a stroke sensing sheet is fixed on the upper end of the traverse sliding block, and the stroke sensing sheet is located between the two stroke probes. A second power mechanism is provided on the right side of the swivel seat, and the second power mechanism is transmission-connected with the traverse screw rod, a welding gun hand is fixed on the traverse sliding block, a welding gun shield is fixed on the end of the welding gun hand, a welding gun is fixed on the welding gun hand, and the welding gun extends into the welding gun shield, and the second power mechanism drives the traverse screw rod to rotate, thereby driving the welding gun to move laterally.

[0015] Furthermore, an adjustment shaft is rotatably provided on the front side of the traverse slider, a fine-adjustment flap is fixed on the adjustment shaft, a fine-adjustment screw is provided on the fine-adjustment flap, a welding gun operator is fixed on the fine-adjustment flap, a welding gun shield is fixed on the end of the welding gun operator, a welding gun is fixed on the welding gun operator, and the welding gun extends into the welding gun shield. When the fine-adjustment screw is rotated, it moves toward the traverse slider and lifts the fine-adjustment flap, thereby adjusting the angle of the welding gun.

[0016] Furthermore, the first power mechanism includes a lifting motor, a lifting driving wheel and a lifting driven wheel. The lifting motor is fixed at the upper end of the base, the lifting motor power output end is provided with a lifting driving wheel, the upper end of the lifting screw rod is provided with a lifting driven wheel, and the lifting driving wheel and the lifting driven wheel are gearedly connected.

[0017] Furthermore, the second power mechanism includes a traverse motor, a traverse driving wheel and a traverse driven wheel. The traverse motor is fixed on the swivel seat. The traverse motor power output end is provided with a traverse driving wheel. The right end of the traverse screw is fixed with a traverse driven wheel. The traverse driving wheel and the traverse driven wheel are meshed and connected.

[0018] Furthermore, the wire feeder is fixed on a wire feeding frame, the upper end of the wire feeding frame is slidably connected to the other side of the slide rail relative to the cross beam, and the lower end thereof is slidably connected to the steel rail arranged on the side of the cross beam. The output end of the wire feeder is connected to a wire tube, the other end of the wire tube is connected to the welding gun, and welding wire is wound around the wire feeder.

[0019] Furthermore, a main shaft is provided on the upper end shaft of the tailstock, a positioning pin is provided on the bottom of the tailstock, the automatic centering chuck is fixed to the right end of the main shaft, the automatic centering chuck arranged on the tailstock is arranged opposite to the automatic centering chuck arranged on the frame, and clamps the two ends of the tube mold running wheel.

[0020] The beneficial effects of the automatic surfacing welding repair machine for the pipe pile and pipe mold running wheel of the present invention are as follows:

[0021] 1) Install the pipe mold wheel hanger between the automatic centering chuck on the tailstock and the automatic centering chuck on the frame, push the tailstock into place according to the length of the pipe mold wheel, adjust so that both ends of the pipe mold wheel are in contact with the centering claws of the automatic centering chuck, open the solenoid valve to ventilate the cylinder to complete the clamping and centering of the pipe mold wheel, and ventilate the cylinder during clamping to automatically align and clamp;

[0022] 2) Multiple pipe mold wheels can be used for automatic cladding at the same time. After one layer of cladding is completed, the welding gun automatically steps forward to weld the next layer. After one layer of cladding is completed, the welding gun automatically rises in height and moves back and forth in the reverse direction to clad the next layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an overall structural diagram of an automatic surfacing welding repair machine for a pipe pile and pipe mold running wheel of the present invention;

[0024] Figure 2 This is an overall structural diagram of another perspective of the automatic surfacing welding repair machine for the running wheel of a pipe pile and pipe mold of the present invention;

[0025] Figure 3 A diagram showing the connection relationship between the automatic centering chuck, the carbon brush plate assembly and the main transmission mechanism of the present invention;

[0026] Figure 4 for Figure 3 Connection diagram from another perspective;

[0027] Figure 5 It is a structural diagram of the automatic centering chuck of the present invention;

[0028] Figure 6 for Figure 5 Another structural diagram from another perspective;

[0029] Figure 7 It is a structural diagram of the centering clamp mechanism of the present invention;

[0030] Figure 8 It is a structural diagram of the welding gun mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of the cross-sectional structure of the welding gun mechanism of the present invention;

[0032] Fig.10 It is a positional relationship diagram of the welding gun mechanism and the wire feeder of the present invention;

[0033] Fig.11 It is a positional relationship diagram of the tailstock and the automatic centering chuck of the present invention;

[0034] Fig.12 It is a schematic diagram of the welding gun of the present invention rotated 90 degrees.

[0035] Among them, the machine base 100, the frame 200, the tailstock 300, the rail 101, the crossbeam 102, the slide rail 103, the automatic centering chuck 1, the carbon brush plate assembly 2, the main transmission mechanism 3, the wire tube 4, the welding gun mechanism 5, the main shaft 6, the wire feeder 7, and the tube mold running wheel 8;

[0036] Chuck 11, clamping hole 111, centering clamping jaw mechanism 12, pneumatic slip ring 13, turntable 121, connecting rod 122, centering clamping jaw 123, U-shaped clamping groove 1231, cylinder 124;

[0037] Carbon brush holder 21, carbon brush plate 22, carbon brush 23, insulating gasket 24;

[0038] Pulley 31, main motor 32, belt 33, stepping probe 34;

[0039] Base 51, lifting screw 52, ​​lifting sleeve 53, elbow seat 54, set screw 55, traverse screw 56, traverse slide bar 57, traverse slide block 58, fine adjustment flap 59, adjustment shaft 591, fine adjustment screw 592, welding gun operator 501, welding gun 502, welding gun shield 503, outer cylinder 504, inner cylinder 505, lifting motor 511, lifting driving wheel 512, lifting driven wheel 513, traverse motor 521, traverse driving wheel 522, traverse driven wheel 523, travel probe 541, travel sensor sheet 542;

[0040] Wire feeder 7, wire feed frame 71;

[0041] Positioning pin 301. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-2 As shown, an automatic surfacing welding repair machine for a pipe pile and pipe mold wheel comprises a machine base 100, steel rails 101 are arranged in parallel on the front and rear sides of the upper end of the machine base 100, a tailstock 300 is slidingly arranged on the left side of the two steel rails 101, a frame 200 is fixedly arranged on the right side of the machine base 100, automatic centering chucks 1 are arranged on the opposite axes on the frame 200 and the tailstock 300, a pipe mold wheel 8 to be welded is clamped between the two automatic centering chucks 1, the two steel rails 101 extend to the right side to the frame 200, a main shaft 6 is connected to the upper shaft of the frame 200, a carbon brush plate assembly 2 and a main transmission mechanism 3 are arranged on the left and right sides of the main shaft 6, the main shaft 6 passes through the carbon brush plate assembly 2 and extends to the left, and an automatic centering chuck 1 is fixed on the end extending out of the frame 200, and the main transmission mechanism 3 drives the automatic centering chuck 1 on the right side to rotate, thereby driving the pipe mold wheel 8 to rotate;

[0044] A crossbeam 102 is fixed on the side of the machine base 100, a slide rail 103 is fixed on the upper side of the crossbeam 102, a welding gun mechanism 5 is slidably connected to the slide rail 103, the welding gun mechanism 5 extends to the upper end of the tube mold running wheel 8, a wire feeder 7 is slidably provided on the steel rail 101 arranged on the side of the crossbeam 102, a welding wire is wound around the wire feeder 7, the IN end of the wire feeder 7 is connected to the gas shielded welding machine and the gas cylinder, and the OUT end is connected to the welding gun 502, the gas shielded welding machine can be fixed on the wire feeding frame 71 and move together with the wire feeding machine 7;

[0045] In this embodiment, the tail frame 300 can move left and right on two parallel steel rails 101, so it is suitable for the clamping of pipe mold running wheels 8 of different lengths. At the same time, the welding gun mechanism 5 can also slide on the slide rail 103 to adjust the welding position, and the corresponding wire feeder 7 follows the movement.

[0046] like Figure 5-7 As shown, the automatic centering chuck 1 includes a chuck 11, a chuck hole 111 is symmetrically opened on the outside of the chuck 11, the left end of the spindle 6 is fixed at the center of the inside of the chuck 11, a pneumatic slip ring 13 is slidably provided near the chuck 11, and a centering jaw mechanism 12 is provided inside the chuck 11;

[0047] The centering clamp mechanism 12 includes a turntable 121, a connecting rod 122, a centering clamp 123 and a cylinder 124. The turntable 121 is axially connected to the main shaft 6 and is located between the chuck 11 and the pneumatic slip ring 13. The upper end of the turntable 121 is symmetrically hinged with a plurality of connecting rods 122. The number of connecting rods 122 is ≧3, preferably four. The connecting rod 122 is L-shaped. The other end of the connecting rod 122 is hinged with a centering clamp 123. Both ends of the cylinder 124 are Connected to any two non-adjacent centering jaws 123, the pneumatic slip ring 13 is in communication with the cylinder 124, the pneumatic slip ring 13 is connected to an external air source and supplies air to the cylinder 124, the centering jaw 123 is provided with a U-shaped card slot 1231, the U-shaped card slot 1231 is carded in the card hole 111, so that the centering jaw 123 can only slide toward the center or outer diameter direction of the chuck 11, and the pneumatic slip ring 13 makes the air path of the cylinder 124 stable when the main shaft 6 rotates;

[0048] In this embodiment, there are four connecting rods 122 and four centering jaws 123, which are symmetrically distributed. The two centering jaws 123 arranged opposite to each other are connected by a cylinder 124. After the cylinder 124 is ventilated, the piston rod is extended and retracted to make the length of the entire cylinder 124 longer or shorter, thereby pushing the centering jaws 123 to open outward or tighten inward. The centering jaws 123 transmit force to the shaft turntable 121 through the connecting rod 122 for rotation. Because the turntable 121 can only rotate around the main axis 6 without changing the center position, the connecting rod 122 hinged on the turntable 121 can only rotate synchronously by the same angle, thereby pushing the centering jaws 123 to clamp the pipe mold running wheel 8 synchronously and concentrically.

[0049] The carbon brush disc assembly 2 includes a carbon brush holder 21, a carbon brush disc 22, a carbon brush 23 and an insulating gasket 24. The carbon brush holder 21 is fixed to the left side of the upper end of the frame 200 through the insulating gasket 24. The main shaft 6 movably passes through the carbon brush holder 21 and is fixedly installed on the carbon brush disc 22. The carbon brush disc 22 is located in the carbon brush holder 21. The carbon brush 23 is fixed to the inner wall of the carbon brush holder 21. The carbon brush 23 is in elastic contact with the carbon brush disc 22 to make the carbon brush holder 21 and the carbon brush disc 22 conductive. The carbon brush holder 21 is stationary and is used for an external welding machine ground wire to form a current loop during welding.

[0050] like Figure 3-4As shown, the main transmission mechanism 3 includes a pulley 31, a main motor 32 and a belt 33. The pulley 31 is fixed to the right side of the main shaft 6 and is located on the right side of the upper end of the frame 200. The main motor 32 is provided on the side of the frame 200. The power output end of the main motor 32 is connected to the pulley 31 through the belt 33. A stepping probe 34 is provided on the frame 200 near the pulley 31 to detect the number of rotations of the pulley 31.

[0051] like Figure 8-9 As shown, the welding gun mechanism 5 includes a base 51, which is slidably connected to the crossbeam 102, an outer cylinder 504 is fixed at the lower end of the base 51, and a lifting screw 52 is rotatably provided in the outer cylinder 504. The lifting screw 52 extends upward and movably passes through the outer cylinder 504 and the base 51. A first power mechanism is provided at the upper end of the base 51, and the first power mechanism is transmission-connected with the lifting screw 52. A lifting sleeve 53 is sleeved on the outer side of the outer cylinder 504, and an inner cylinder 505 is slidably provided in the outer cylinder 504. The inner cylinder 505 is screwed with the lifting screw 52, ​​and a vertical hole is vertically opened on the side of the outer cylinder 504. The inner cylinder 505 The first power mechanism is fixedly connected to the lifting sleeve 53 through a connecting block passing through the vertical hole. The first power mechanism includes a lifting motor 511, a lifting driving wheel 512 and a lifting driven wheel 513. The lifting motor 511 is fixed to the upper end of the base 51. The lifting driving wheel 512 is provided at the power output end of the lifting motor 511. The upper end of the lifting screw rod 52 is provided with a lifting driven wheel 513. The lifting driving wheel 512 and the lifting driven wheel 513 are meshed and connected. The lifting motor 511 drives the lifting screw rod 52 to rotate, thereby driving the lifting sleeve 53 to move up and down along the outer cylinder 504 through the inner cylinder 505. The vertical hole controls the lifting height.

[0052] A swivel seat 54 is embedded on the outer circumference of the lifting sleeve 53, and the swivel seat 54 can rotate along the outer circumference of the lifting sleeve 53. A set screw 55 is provided on the swivel seat 54 on the outer side of the lifting sleeve 53. When the swivel seat 54 rotates to the right position along the outer circumference of the lifting sleeve 53, the set screw 55 is tightened to fix the swivel seat 54 and the lifting sleeve 53. A traverse screw rod 56 is connected to the other side of the swivel seat 54 relative to the lifting sleeve 53. The traverse screw rod 56 on the swivel seat 54 is located at the outer side of the lifting sleeve 53. A traverse slide bar 57 is fixed on the upper and lower sides of the rod 56, and a traverse slider 58 is commonly provided on the traverse screw rod 56 and the two traverse slide rods 57. The traverse slider 58 is screwed with the traverse screw rod 56 and is slidably connected with the two traverse slide rods 57. Two travel probes 541 are fixed on the upper end of the elbow seat 54, and a travel sensing sheet 542 is fixed on the upper end of the traverse slider 58. The travel sensing sheet 542 is located between the two travel probes 541. The distance between the two travel probes 541 is the same as the width of the pipe mold running wheel 8. A second power mechanism is provided on the right side of the elbow seat 54, and the second power mechanism is transmission-connected with the traverse screw rod 56. A welding gun operator 501 is fixed on the traverse slider 58, and a welding gun shield 503 is fixed at the end of the welding gun operator 501. A welding gun 502 is fixed on the welding gun operator 501, and the welding gun 502 extends into the welding gun shield 503. The second power mechanism includes a traverse motor 521, a traverse driving wheel 522 and a traverse driven wheel 523 The traverse motor 521 is fixed on the elbow seat 54, and a traverse driving wheel 522 is provided at the power output end of the traverse motor 521. A traverse driven wheel 523 is fixed to the right end of the traverse screw rod 56. The traverse driving wheel 522 and the traverse driven wheel 523 are meshed and connected. When the surfacing is performed to the side edge of the tube mold running wheel 8, the travel probe 541 detects the travel sensing sheet 542. At this time, the traverse motor 521 rotates in the reverse direction, so that the welding gun 502 steps in the reverse direction to perform the next layer of welding.

[0053] In order to achieve the angle adjustment of the welding gun 502, an adjustment shaft 591 can be rotated on the front side of the traverse slider 58, a fine-tuning flap 59 is fixed on the adjustment shaft 591, a fine-tuning screw 592 is provided on the fine-tuning flap 59, a welding gun operator 501 is fixed on the fine-tuning flap 59, a welding gun shield 503 is fixed on the end of the welding gun operator 501, a welding gun 502 is fixed on the welding gun operator 501, and the welding gun 502 extends into the welding gun shield 503. When the fine-tuning screw 592 is rotated, it moves toward the traverse slider 58 and lifts up the fine-tuning flap 59, thereby adjusting the angle between the welding gun 502 and the tube mold running wheel 8.

[0054] like Fig.10As shown, the wire feeder 7 is fixed on the wire feeding frame 71, the upper end of the wire feeding frame 71 is slidably connected to the other side of the cross beam 102 relative to the slide rail 103, and the lower end thereof is slidably connected to the rail 101 arranged on the side of the cross beam 102. The wire feeder 7 is equipped with a welding wire reel, and the welding wire is wound on the welding wire reel. The IN (inlet) end of the wire feeder 7 is connected to the gas shielded welding machine and the gas cylinder, and the OUT (outlet) end is connected to the welding gun 502 through a special wire tube 4. The special wire tube 4 contains welding wire, carbon dioxide pipeline, electric wires, etc. The gas shielded welding machine is a commonly used equipment and will not be described in detail.

[0055] In this embodiment, the gas shielded welding machine can be fixed on the wire feeding frame 71 and move with the wire feeding machine 7, or it can be fixed on the ground alone. During the welding process, the gas shielded welding machine moves a certain distance by retracting and releasing the length of the soft wire tube, so the gas shielded welding machine does not need to move with the wire feeding machine 7.

[0056] like Fig.11 As shown, a spindle 6 is provided on the upper end of the tailstock 300, a positioning pin 301 is provided on the bottom of the tailstock 300, an automatic centering chuck 1 is fixed to the right end of the spindle 6, and the automatic centering chuck 1 provided on the tailstock 300 is arranged opposite to the automatic centering chuck 1 provided on the frame 200, and clamps both ends of the tube mold running wheel 8.

[0057] It is worth noting that in this embodiment, the length of each tube mold running wheel 8 is 2 meters, and a total of 5 sets of welding gun mechanisms 5 are installed. Five tube mold running wheels 8 can be welded at the same time. When used, only one set of welding gun mechanisms 5 can be set, or multiple sets can be set. When welding multiple tube mold running wheels 8, clamps need to be clamped between the tube mold running wheels 8 to prevent them from falling off during rotation.

[0058] The specific implementation is as follows: Before hoisting, rotate the welding gun 502 by 90 degrees to avoid collision with the hoisting device (such as Fig.12 As shown), the pipe mold running wheel 8 is hoisted and placed between the automatic centering chuck 1 set on the tailstock 300 and the automatic centering chuck 1 set on the frame 200, and the tailstock 300 is pushed into place according to the length of the pipe mold running wheel 8. The two ends of the pipe mold running wheel 8 are adjusted to contact the centering claws 123 of the automatic centering chuck 1, and the solenoid valve is opened to ventilate the cylinder 124 to complete the clamping and centering of the pipe mold running wheel 8, and the positioning pin 301 is locked to prevent the tailstock 300 from moving, thereby completing the clamping of the pipe mold running wheel 8.

[0059] Then the welding gun 502 is rotated back to its original position. At this time, the welding gun hand 501 and the tube mold running wheel 8 are perpendicular, and the welding gun mechanism 5 slides left and right to adjust so that the welding guns 502 correspond to the tube mold running wheel 8 respectively, and the end of the wire tube 4 of the welding gun 502 is at the edge position of the tube mold running wheel 8 or the welding start position.

[0060] The lifting motor 511 drives the lifting screw 52 to rotate, thereby driving the lifting sleeve 53 to move up and down along the outer cylinder 504 through the inner cylinder 505 to adjust the height of the welding gun 502. At the same time, the fine-tuning screw 592 is rotated as needed to move toward the transverse slider 58 and lift the fine-tuning flap 59, thereby adjusting the angle between the welding gun 502 and the pipe mold running wheel 8, so that the end of the wire tube 4 on the welding gun 502 maintains a distance of 20 to 30 mm from the surface of the pipe mold running wheel 8, setting the current, protective gas pressure and flow of the gas shielded welding machine, and the main motor 32 drives the main shaft 6 to rotate, thereby driving the automatic centering chuck 1 and the pipe mold running wheel 8 to rotate, the speed is 30 to 40 seconds / revolution, and the gas shielded welding machine is started to weld and surfacing the pipe mold running wheel 8 at the same time.

[0061] After each layer (one circle) of surfacing is completed, the stepping probe 34 detects that the pulley 31 rotates one circle, and the traverse motor 521 rotates, driving the traverse slider 58 to step on the traverse screw rod 56, thereby driving the welding gun 502 to step horizontally, and each step is set to 3 to 5 mm.

[0062] The distance between the two travel probes 541 is the same as the width of the tube mold wheel 8, and the left and right sides are aligned with the edge of the tube mold wheel 8. Whenever a layer of surfacing is completed and surfacing is completed to the side edge of the tube mold wheel 8, the travel probe 541 detects the travel sensor sheet 542, and the traverse motor 521 rotates in the opposite direction, so that the traverse slider 58 steps in the opposite direction, that is, the welding gun 502 performs step-by-step surfacing welding in the opposite direction, and at the same time, the lifting motor 511 drives the welding gun 502 to rise in height, and each time the height is raised by 3 to 6 mm according to the thickness of the surfacing layer. In this way, whenever a layer of surfacing is completed (i.e., one circle), the next layer is surfacing and stepping is performed horizontally, and whenever a layer of surfacing is completed, the reverse stepping and raising of the welding gun are performed to surfacing the next layer.

[0063] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. An automatic surfacing welding repair machine for a pipe pile and pipe mold running wheel, comprising a machine base (100), wherein steel rails (101) are arranged in parallel on both sides of the upper end of the machine base (100), a tail frame (300) is slidably arranged on the left side of the two steel rails (101), and a frame (200) is fixedly arranged on the right side of the machine base (100), characterized in that: The two steel rails (101) extend to the right side to the frame (200); a main shaft (6) is provided on the upper shaft of the frame (200); a carbon brush plate assembly (2) and a main transmission mechanism (3) are provided on the left and right sides of the main shaft (6); the main shaft (6) passes through the carbon brush plate assembly (2) and extends to the left; an automatic centering chuck (1) is fixed to the end of the main shaft extending out of the frame (200); another automatic centering chuck (1) is connected to the upper shaft of the tail frame (300); a pipe mold running wheel (8) to be welded is clamped between the two automatic centering chucks (1); the main transmission mechanism (3) drives the automatic centering chuck (1) on the frame (200) to rotate, thereby driving the pipe mold running wheel (8) to rotate; A crossbeam (102) is fixed to one side of the machine base (100), a slide rail (103) is fixed to the upper side of the crossbeam (102), a welding gun mechanism (5) is slidably connected to the slide rail (103), the welding gun mechanism (5) extends toward the upper end of the tube mold running wheel (8), a wire feeder (7) is slidably provided on the steel rail (101) arranged on the side of the crossbeam (102), the wire feeder (7) feeds welding wire for a gas shielded welding machine, and the gas shielded welding machine is connected to the welding gun mechanism (5) via a wire tube (4); The automatic centering chuck (1) comprises a chuck (11), the outer side of the chuck (11) is symmetrically provided with a chuck hole (111), the left end of the spindle (6) is fixed at the inner center of the chuck (11), the spindle (6) is slidably provided with a pneumatic slip ring (13) near the chuck (11), and the chuck (11) is provided with a centering jaw mechanism (12); The centering clamp mechanism (12) comprises a rotating disk (121), a connecting rod (122), a centering clamp (123) and a cylinder (124); the rotating disk (121) is fixed on the main shaft (6) and is located between the chuck (11) and the pneumatic slip ring (13); a plurality of connecting rods (122) are symmetrically hinged on the upper end of the rotating disk (121); the other end of the connecting rod (122) is hinged on the centering clamp (123); two ends of the cylinder (124) are connected to any two non-adjacent centering clamps (123); the centering clamp (123) is provided with a U-shaped groove (1231); the U-shaped groove (1231) is clamped in the clamp hole (111), so that the centering clamp (123) can only slide towards the center or outer diameter of the chuck (11); The pneumatic slip ring (13) is pneumatically connected to the cylinder (124). After the cylinder (124) is ventilated, the piston rod is extended and retracted to lengthen or shorten the entire cylinder (124), thereby pushing the centering clamping claw (123) to open outward or tighten inward, thereby achieving clamping and loosening of the tube mold running wheel (8); The welding gun mechanism (5) comprises a base (51), the base (51) being slidably connected to the crossbeam (102), an outer cylinder (504) being fixed at the lower end of the base (51), a lifting screw (52) being rotatably provided in the outer cylinder (504), the lifting screw (52) extending upward and movably passing through the outer cylinder (504) and the base (51), a first power mechanism being provided at the upper end of the base (51), the first power mechanism being transmission-connected to the lifting screw (52), the outer cylinder (504) being rotatably provided with a lifting screw (52), 04) A lifting sleeve (53) is sleeved on the outside, an inner sleeve (505) is slidably provided inside the outer sleeve (504), the inner sleeve (505) is threadedly connected to the lifting screw rod (52), a vertical hole is vertically opened on the side of the outer sleeve (504), the inner sleeve (505) is fixedly connected to the lifting sleeve (53) through a connecting block passing through the vertical hole, the first power mechanism drives the lifting screw rod (52) to rotate, thereby driving the lifting sleeve (53) to move up and down along the outer sleeve (504) through the inner sleeve (505); A swivel seat (54) is embedded on the outer circumference of the lifting sleeve (53), and the swivel seat (54) can rotate along the outer circumference of the lifting sleeve (53). A set screw (55) is provided on the swivel seat (54) on the outer side of the lifting sleeve (53). A traverse screw rod (56) is connected to the swivel seat (54) on the other side of the set screw (55). A traverse slide rod (57) is fixed on the swivel seat (54) on the upper and lower sides of the traverse screw rod (56). A traverse slide rod (58) is provided on the traverse screw rod (56) and the two traverse slide rods (57). The traverse slide rod (58) is screwed to the traverse screw rod (56) and is slidably connected to the two traverse slide rods (57). The upper end of the swivel seat (54) is fixed There are two travel probes (541), a travel sensing sheet (542) is fixed on the upper end of the traverse slider (58), and the travel sensing sheet (542) is located between the two travel probes (541). A second power mechanism is provided on the right side of the rotating elbow seat (54), and the second power mechanism is transmission-connected with the traverse screw rod (56). A welding gun operator (501) is fixed on the traverse slider (58), a welding gun shield (503) is fixed at the end of the welding gun operator (501), a welding gun (502) is fixed on the welding gun operator (501), and the welding gun (502) extends into the welding gun shield (503). The second power mechanism drives the traverse screw rod (56) to rotate, thereby driving the welding gun (502) to move laterally.

2. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 1 is characterized by: The carbon brush disc assembly (2) comprises a carbon brush holder (21), a carbon brush disc (22), a carbon brush (23) and an insulating gasket (24); the carbon brush holder (21) is fixed to the left side of the upper end of the frame (200) via the insulating gasket (24); the main shaft (6) movably passes through the carbon brush holder (21); the main shaft (6) is fixedly installed on the carbon brush disc (22); the carbon brush disc (22) is located in the carbon brush holder (21); the carbon brush (23) is fixed to the inner wall of the carbon brush holder (21); and the carbon brush (23) is in elastic contact with the carbon brush disc (22).

3. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 1 is characterized by: The main transmission mechanism (3) comprises a pulley (31), a main motor (32) and a belt (33); the pulley (31) is fixed to the right side of the main shaft (6) and is located on the right side of the upper end of the frame (200); a main motor (32) is provided on the side of the frame (200); a power output end of the main motor (32) is connected to the pulley (31) through a belt (33); and a stepping probe (34) for detecting the number of rotations of the pulley (31) is provided on the frame (200) near the pulley (31).

4. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 1 is characterized by: The front side of the traverse slide block (58) is rotatably provided with an adjustment shaft (591), a fine-adjustment flap (59) is fixed on the adjustment shaft (591), a fine-adjustment screw (592) is provided on the fine-adjustment flap (59), a welding gun operator (501) is fixed on the fine-adjustment flap (59), a welding gun shield (503) is fixed at the end of the welding gun operator (501), a welding gun (502) is fixed on the welding gun operator (501), the welding gun (502) extends into the welding gun shield (503), and when the fine-adjustment screw (592) is rotated, it moves toward the traverse slide block (58) and lifts up the fine-adjustment flap (59), thereby adjusting the angle of the welding gun (502).

5. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 1 is characterized by: The first power mechanism comprises a lifting motor (511), a lifting driving wheel (512) and a lifting driven wheel (513); the lifting motor (511) is fixed to the upper end of the base (51); a lifting driving wheel (512) is provided at the power output end of the lifting motor (511); a lifting driven wheel (513) is provided at the upper end of the lifting screw rod (52); and the lifting driving wheel (512) and the lifting driven wheel (513) are meshedly connected.

6. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 4 is characterized by: The second power mechanism comprises a traverse motor (521), a traverse driving wheel (522) and a traverse driven wheel (523); the traverse motor (521) is fixed on the swivel seat (54); a traverse driving wheel (522) is provided at the power output end of the traverse motor (521); a traverse driven wheel (523) is fixed at the right end of the traverse screw rod (56); and the traverse driving wheel (522) and the traverse driven wheel (523) are meshedly connected.

7. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 1 is characterized by: The wire feeder (7) is fixed on a wire feeder frame (71); the upper end of the wire feeder frame (71) is slidably connected to the other side of the cross beam (102) relative to the slide rail (103); the lower end of the wire feeder frame (71) is slidably connected to the steel rail (101); the output end of the wire feeder (7) is connected to a wire tube (4); the other end of the wire tube (4) is connected to the welding gun (502); and welding wire is wound around the wire feeder (7).

8. The automatic surfacing welding repair machine for pipe pile and pipe mold running wheel according to claim 1 is characterized by: A main shaft (6) is provided on the upper end of the tailstock (300), a positioning pin (301) is provided on the bottom of the tailstock (300), and the automatic centering chuck (1) is fixed to the right end of the main shaft (6). The automatic centering chuck (1) provided on the tailstock (300) is arranged opposite to the automatic centering chuck (1) provided on the frame (200), and clamps the two ends of the tube mold running wheel (8).

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