Automatic slag scraping device of submerged arc welding machine

Abstract

The invention belongs to the technical field of slag scraping devices of welding machines, and particularly discloses an automatic slag scraping device of a submerged arc welding machine, which comprises a support frame, a motor, a speed reducer, an electrical control cabinet and two bearing seats are respectively arranged on the support frame, a rotating shaft of the motor is connected with a high-speed shaft of the speed reducer, and low-speed shafts on two sides of the speed reducer are provided with transmission shafts. The two transmission shafts are rotationally connected with the two bearing seats, slag scraping rods are arranged on the two transmission shafts, each slag scraping rod is provided with a slag scraping head used for scraping slag, the bottom of the supporting frame is rotationally connected with a driving shaft and a driven shaft, moving wheels are arranged on the driving shaft and the driven shaft, and a driving assembly used for driving the driving shaft is arranged on the supporting frame. The problems that the working efficiency of manual welding slag cleaning is low, the demand for manpower is large, and the labor cost is increased are solved. The slag scraping rod is driven by the motor to automatically scrape slag, the working efficiency is improved, in addition, the moving wheels are driven by the driving assembly to rotate, and automatic slag scraping operation can be conveniently conducted on a welding workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of welding machine slag scraping devices, and in particular to an automatic slag scraping device for a submerged arc welding machine. Background Art

[0002] In the field of steel manufacturing, many steel structure components, such as large cylinders, will suffer various forms of wear on their outer surfaces during long-term use. The worn steel structure surface will not only affect its appearance quality, but more importantly, it will reduce its structural strength and service life. If the worn steel structure is scrapped and repurchased, it will increase production costs. Therefore, in order to restore the performance of the steel structure and reduce production costs, the usual practice is to first use a submerged arc welding machine to weld a layer of metal material with good performance on the outer surface of the steel structure to enhance the structural strength. After welding is completed, fine grinding and polishing are performed on the lathe to restore the surface of the steel structure to a flat and smooth state, thereby completing the renovation work. Compared with ordinary manual arc welding, the automatic submerged arc welding machine has the advantages of high production efficiency, good welding quality, energy saving and small welding deformation. During welding, a layer of granular flux is spread on the part to be welded, and the wire feeding mechanism automatically feeds the welding wire into the welding area. An arc is generated between the welding wire and the weldment, and the arc burns under the flux layer. The heat generated by the arc melts the edges of the welding wire and the weldment to form a molten pool. As the automatic submerged arc welding machine moves, the molten pool metal cools and solidifies to form a weld.

[0003] The automatic submerged arc welding machine will generate a large amount of welding slag during the multi-layer and multi-pass continuous welding operation. The welding slag needs to be cleaned in time. If the welding slag is not cleaned in time, the normal formation of the next weld cannot be guaranteed. Currently, the welding slag is cleaned manually using a slag cleaning rod.

[0004] However, during manual cleaning, since it completely relies on manual operation by workers, each welding slag needs to be handled carefully by workers, so the work efficiency is low. In the face of a large number of welding workpieces, in order to ensure the cleaning progress, more workers have to be deployed, resulting in a significant increase in labor costs. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic slag scraping device for a submerged arc welding machine to solve the problems of low efficiency of manual cleaning of welding slag, cumbersome cleaning work, high demand for manpower, and increased labor costs.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the present invention is: an automatic slag scraping device for a submerged arc welding machine, comprising a support frame, on which a motor, a reducer, an electrical control cabinet and two bearing seats are respectively provided, the motor is electrically connected to the electrical control cabinet, the rotating shaft of the motor is detachably connected to the high-speed shaft of the reducer, the low-speed shafts on both sides of the reducer are detachably connected with a transmission shaft, the two transmission shafts are respectively rotatably connected to the two bearing seats, the free ends of the two transmission shafts are respectively detachably connected with scraping rods, each of the scraping rods is provided with a scraping head for scraping slag, the bottom of the support frame is respectively rotatably connected with a driving shaft and a driven shaft, both ends of the driving shaft and the driven shaft are provided with moving wheels, and the support frame is provided with a driving component for driving the driving shaft.

[0007] The working principle of the present invention is: first, the two scraping heads are respectively aligned with the centers of the two starting welds of the welding workpiece, and then the distance between the automatic scraping device and the welding workpiece is adjusted so that the gap between the scraping head and the welding workpiece is in an optimal state, and then the motor is started through the electrical control cabinet, and the motor drives the high-speed shaft of the reducer to rotate, and then the reducer reduces the speed of the high-speed shaft and drives the transmission shaft to rotate through the low-speed shaft of the reducer, and the transmission shaft drives the two scraping rods to rotate, and the scraping heads on the scraping rods scrape off the welding slag, and at the same time, the driving shaft is driven by the driving component to cause the trolley to move, thereby realizing automatic scraping operation, and when the automatic scraping device finishes scraping the last weld, the motor is turned off, and the automatic scraping device is moved to the placement place.

[0008] The beneficial effects of the present invention are: the slag scraping rod is driven by a motor to automatically scrape the slag without manual operation, which greatly improves the scraping speed and improves work efficiency; at the same time, it reduces dependence on manual labor and reduces labor costs; in addition, the driving component drives the moving wheel to rotate, so that the device moves, which is convenient for automatic slag scraping operations on the welding workpiece.

[0009] Option 2, which is the preferred option of the basic option, the driving assembly includes a support plate, a pulley 1 is provided on the transmission shaft, the support frame is bolted to the support plate, a support seat is provided on the support plate, a worm is rotatably connected to the support seat, one end of the worm is provided with a pulley 2, the pulley 1 is located directly above the pulley 2, a belt is provided between the pulley 1 and the pulley 2, a fixed seat is provided on the support plate, a worm wheel is rotatably connected to the fixed seat, the worm wheel is meshed with the worm, a through groove is provided at the bottom of the support plate, the worm wheel is located on the through groove of the support plate, a gear 1 is provided on the driving shaft, and a gear 2 for meshing with the gear 1 is provided on one side of the worm wheel; through such a drive assembly design, the power of the transmission shaft can be stably transmitted to the driving shaft, the rotation of the moving wheel can be realized, and the smooth movement of the device on the track can be ensured. At the same time, no additional driving source is required, and the movement is achieved by means of the rotation of the transmission shaft.

[0010] Option three is the preferred option of option two. A track is laid on the ground to limit the deviation of the moving wheels. The setting of the track can ensure that the device does not deviate during the movement, thereby ensuring the accuracy of the scraping operation.

[0011] Option 4 is the preferred option of the basic option. The free ends of the two transmission shafts are provided with threaded holes, the surface of the scraper rod is provided with threads, the scraper rod is threadedly connected to the threaded holes, and the scraper rod is threadedly connected with a nut, which rests against the bottom of the transmission shaft; it is easy to adjust the height of the scraper rod to adapt to welding workpieces of different heights.

[0012] Option 5 is the preferred option of Option 4, and the number of threaded holes is several. There are many types of workpieces that need to be welded on the automatic submerged arc welding machine, and the diameters and lengths of various workpieces are different. In order to ensure the cleaning of welding slag in two welds for workpieces of different lengths, the setting of multiple threaded holes facilitates the adjustment of the width of the scraper rod, further improving the applicability of the device.

[0013] Option six is ​​the preferred option of the basic option. The scraper head includes a rigid scraper head and a flexible scraper head. The rigid scraper head and the flexible scraper head are detachably connected to the scraper rod. The rigid scraper head leaves a gap farther from the weld of the workpiece, while the flexible scraper head leaves no gap from the weld on the workpiece. When the scraper rod rotates, if the rigid scraper head fails to thoroughly clean the welding slag on the weld of the workpiece, the flexible scraper head that follows the rotation will further clean the welding slag left on the weld, thereby improving the scraping effect.

[0014] Option seven is a preferred option of option six. A joint is threadedly connected to the scraper rod, and the joint is threadedly connected to the rigid scraper head and the flexible scraper head. The provision of the joint facilitates replacement of the scraper head.

[0015] Option 8 is the preferred option of Option 7. The joint is made of insulator material; the insulator material can prevent current conduction and ensure the safety of scraping operations.

[0016] Option nine is the preferred basic option. A coupling 1 is provided on the rotating shaft of the motor, and the coupling 1 is connected to the high-speed shaft of the reducer. Coupling 2 is provided on the low-speed shafts on both sides of the reducer, and the coupling 2 is connected to the transmission shaft. The coupling facilitates the connection and disassembly between the motor and the reducer, and between the reducer and the transmission shaft, and can compensate for the deviation between the shafts to a certain extent.

[0017] Option 10 is the preferred basic option. The electrical control cabinet is electrically connected to a frequency converter. The rotation speed of the scraper rod can be adjusted by the knob on the frequency converter to ensure that the rotation speed of the scraper rod matches the rotation speed of the weld slag on the workpiece. When the diameter of the workpiece being welded is large and the surfacing speed is slow, the motor speed is slowed down to reduce the rotation speed of the scraper rod. When the diameter of the workpiece being welded is small and the surfacing speed is fast, the motor speed is adjusted to increase the rotation speed of the scraper rod. The scraper rod speed can be adjusted according to actual conditions to meet different scraping needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of an automatic slag scraping device for a submerged arc welding machine of the present invention; Figure 2 It is a left view of an automatic slag scraping device for a submerged arc welding machine according to the present invention; Figure 3 It is a top view of an automatic slag scraping device for a submerged arc welding machine of the present invention; Figure 4 It is a structural schematic diagram of a driving component in an automatic slag scraping device for a submerged arc welding machine according to the present invention; Figure 5 It is a structural schematic diagram of an automatic slag scraping device for a submerged arc welding machine of the present invention when starting to scrape slag; Figure 6 It is a structural schematic diagram of an automatic slag scraping device for a submerged arc welding machine during the slag scraping process of the present invention; Figure 7 The utility model is a left side view of an automatic slag scraping device of a submerged arc welding machine when scraping slag. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below through specific embodiments: The figure marks in the drawings of the specification include: 1, support frame; 2, motor; 3, reducer; 4, electrical control cabinet; 5, bearing seat; 6, transmission shaft; 7, scraper rod; 701, rigid scraper head; 702, flexible scraper head; 703, joint; 8, driving shaft; 9, driven shaft; 10, moving wheel; 101, track; 110, support plate; 111, pulley one; 112, support seat; 113, worm; 114, pulley two; 115, belt; 116, fixed seat; 117, worm wheel; 118, gear one; 119, gear two; 12, threaded hole; 13, nut; 14, coupling one; 15, coupling two; 16, inverter; 17, submerged arc welding machine; 18, submerged arc welding machine welding gun; 19, welding workpiece.

[0020] like Figures 1 to 7As shown: an automatic scraping device for a submerged arc welding machine, comprising a support frame 1, on which a motor 2, a reducer 3, an electrical control cabinet 4 and two bearing seats 5 are fixedly connected, respectively, the motor 2 is electrically connected to the electrical control cabinet 4, the electrical control cabinet 4 is electrically connected to a frequency converter 16, a coupling 1 14 is connected to the rotating shaft of the motor 2, the coupling 1 14 is connected to the high-speed shaft of the reducer 3, the low-speed shafts on both sides of the reducer 3 are connected to coupling 2 15, each coupling 2 15 is connected to a transmission shaft 6, the two transmission shafts 6 are respectively rotatably connected to the two bearing seats 5, the free ends of the two transmission shafts 6 are each provided with a plurality of threaded holes 12, and the threaded holes 12 are internally threaded with scraping devices Rod 7, a nut 13 is threadedly connected to the scraping rod 7, and the nut 13 abuts against the bottom of the transmission shaft 6. Each scraping rod 7 is provided with a scraping head for scraping slag. The width of the scraping head is 3 times the normal weld width. The scraping head includes a rigid scraping head 701 and a flexible scraping head 702. The rigid scraping head 701 is made of steel, and the flexible scraping head 702 is a wire brush. The scraping rod 7 is threadedly connected with a joint 703, and the joint 703 is made of insulator material. The joint 703 is threadedly connected to the rigid scraping head 701 and the flexible scraping head 702. There is a gap between the rigid scraping head 701 and the weld of the workpiece, while there is no gap between the flexible scraping head 702 and the weld of the workpiece.

[0021] The bottom of the support frame 1 is rotatably connected with a driving shaft 8 and a driven shaft 9, respectively. Both ends of the driving shaft 8 and the driven shaft 9 are fixedly connected with a moving wheel 10. A track 101 for limiting the deviation of the moving wheel 10 is laid on the ground. The support frame 1 is provided with a driving assembly for driving the moving wheel 10. The driving assembly includes a support plate 110, a pulley 111 is fixedly connected to the transmission shaft 6, the support frame 1 and the support plate 110 are bolted, a support seat 112 is fixedly connected to the support plate 110, a worm 113 is rotatably connected to the support seat 112, and a worm 113 is rotatably connected to the worm 113. A pulley 114 is fixedly connected to the end, pulley 111 is located directly above pulley 114, a belt 115 is sleeved between pulley 111 and pulley 114, a fixing seat 116 is fixedly connected to the support plate 110, a worm wheel 117 is rotatably connected to the fixing seat 116, the worm wheel 117 is meshed with the worm 113, a through groove is provided at the bottom of the support plate 110, the worm wheel 117 is located on the through groove of the support plate 110, a gear 118 is provided on the driving shaft 8, and a gear 2 119 for meshing with gear 1 118 is provided on one side of the worm wheel 117.

[0022] The implementation method of this embodiment is as follows: when it is necessary to clean the welding slag of the submerged arc welding machine, firstly, the track 101 is laid beside the welding workpiece on the automatic submerged arc welding machine, and then the moving wheel 10 of the automatic scraping device of the submerged arc welding machine is clamped on the track 101, and then the two rigid scraping heads 701 are respectively aligned with the centers of the two starting welds of the welding workpiece, and then the nut 13 is rotated left and right by a wrench, so that the scraping rod 7 moves in the threaded hole 12, thereby adjusting the gap between the rigid scraping head 701 and the welding workpiece. After the gap is adjusted to the optimal state, the motor 2 is first started through the electrical control cabinet 4, and the motor 2 drives the high-speed shaft of the reducer 3 to rotate, and then the reducer 3 reduces the speed of the high-speed shaft and drives the transmission shaft 6 to rotate through the low-speed shaft of the reducer 3, and the transmission shaft 6 drives the two scraping rods 7 to rotate, and the rigid scraping head 701 on the scraping rod 7 scrapes off the welding slag. When the rigid scraping head 701 fails to completely clean the welding slag, the flexible scraping head 702 that rotates immediately thereafter further thoroughly cleans the welding slag left on the weld. At the same time, as the transmission shaft 6 rotates, the pulley 111 on the transmission shaft 6 drives the pulley 2 114 to rotate through the belt 115, the pulley 2 114 drives the worm 113 to rotate, and the worm 113 drives the worm wheel 117 meshing therewith to rotate. Whenever the worm wheel 117 rotates one circle, the gear 2 119 on the worm wheel 117 meshes with the gear 1 118 on the driving shaft 8, so that the driving shaft 8 rotates a little, and then disengages. When the worm wheel 117 rotates one more circle, the gear 2 119 on the worm wheel 117 meshes with the gear 1 118 on the driving shaft 8 again, so that the driving shaft 8 rotates a little more. In this way, the moving wheel 10 moves intermittently on the track 101 in a cycle, thereby realizing automatic scraping operation.

[0023] When the moving speed of the moving wheel 10 on the track 101 does not match the welding speed of the submerged arc welding machine, the speed of the motor 2 is adjusted by the frequency converter 16. When the diameter of the welding workpiece is large and the welding time of the submerged arc welding machine is long, the speed of the motor 2 is slowed down by the frequency converter 16. When the diameter of the welding workpiece is small and the welding time of the submerged arc welding machine is short, the speed of the motor 2 is increased by the frequency converter 16 to adapt to different slag scraping requirements.

[0024] When the automatic scraping device has finished scraping the last weld, the motor 2 is turned off and the automatic scraping device is moved to a placement location.

[0025] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An automatic slag scraping device for a submerged arc welding machine, characterized in that: The invention comprises a support frame (1), wherein a motor (2), a reducer (3), an electrical control cabinet (4) and two bearing seats (5) are respectively arranged on the support frame (1), wherein the motor (2) is electrically connected to the electrical control cabinet (4), wherein the rotating shaft of the motor (2) is detachably connected to the high-speed shaft of the reducer (3), wherein the low-speed shafts on both sides of the reducer (3) are detachably connected to transmission shafts (6), wherein the two transmission shafts (6) are rotatably connected to the two bearing seats (5), wherein the free ends of the two transmission shafts (6) are detachably connected to scraper rods (7), wherein each scraper rod (7) is provided with a scraper head for scraping slag, wherein the bottom of the support frame (1) is rotatably connected to a driving shaft (8) and a driven shaft (9), wherein both ends of the driving shaft (8) and the driven shaft (9) are provided with moving wheels (10), and wherein a driving assembly for driving the driving shaft (8) is provided on the support frame (1).

2. The automatic slag scraping device for submerged arc welding machine according to claim 1, characterized in that: The driving assembly comprises a support plate (110), a belt pulley 1 (111) is provided on the transmission shaft (6), the support frame (1) is bolted to the support plate (110), a support seat (112) is provided on the support plate (110), a worm (113) is rotatably connected to the support seat (112), a belt pulley 2 (114) is provided at one end of the worm (113), the belt pulley 1 (111) is located directly above the belt pulley 2 (114), and the belt pulley 1 (111) and the belt pulley 2 (114) are rotatably connected to the support seat (112). ), a belt (115) is provided between the support plate (110), a fixing seat (116) is provided on the support plate (110), a worm wheel (117) is rotatably connected to the fixing seat (116), the worm wheel (117) is meshed with the worm (113), a through slot is provided at the bottom of the support plate (110), the worm wheel (117) is located on the through slot of the support plate (110), a gear 1 (118) is provided on the driving shaft (8), and a gear 2 (119) for meshing with the gear 1 (118) is provided on one side of the worm wheel (117).

3. The automatic slag scraping device for submerged arc welding machine according to claim 1, characterized in that: A track (101) for limiting the deviation of the moving wheel (10) is laid on the ground.

4. The automatic slag scraping device for submerged arc welding machine according to claim 1, characterized in that: The free ends of the two transmission shafts (6) are each provided with a threaded hole (12), the surface of the scraper rod (7) is provided with a thread, the scraper rod (7) is threadedly connected to the threaded hole (12), a nut (13) is threadedly connected to the scraper rod (7), and the nut (13) abuts against the bottom of the transmission shaft (6).

5. The automatic slag scraping device for submerged arc welding machine according to claim 4, characterized in that: The number of the threaded holes (12) is multiple.

6. The automatic slag scraping device for submerged arc welding machine according to claim 1, characterized in that: The scraping head comprises a rigid scraping head (701) and a flexible scraping head (702), and the rigid scraping head (701) and the flexible scraping head (702) are detachably connected to the scraping rod (7).

7. The automatic slag scraping device for submerged arc welding machine according to claim 6, characterized in that: The scraper rod (7) is threadedly connected with a joint (703), and the joint (703) is threadedly connected to the rigid scraper head (701) and the flexible scraper head (702).

8. The automatic slag scraping device for submerged arc welding machine according to claim 7, characterized in that: The joint (703) is made of insulator material.

9. The automatic slag scraping device for submerged arc welding machine according to claim 1, characterized in that: A coupling 1 (14) is provided on the rotating shaft of the motor (2), and the coupling 1 (14) is connected to the high-speed shaft of the reducer (3). Coupling 2 (15) is provided on the low-speed shafts on both sides of the reducer (3), and the coupling 2 (15) is connected to the transmission shaft (6).

10. The automatic slag scraping device for submerged arc welding machine according to claim 1, characterized in that: The electrical control cabinet (4) is electrically connected to a frequency converter (16).

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