Rail type movable welding robot for outer wall of silo

Abstract

The invention relates to the technical field of welding robots, in particular to a rail type movable welding robot for the outer wall of a silo, which comprises a first movable platform arranged on a ground rail, a second movable platform mounted at the top of the first movable platform, and a welding robot main body arranged on one side of the second movable platform, a welding wire box is installed on the outer side of a rotating arm at the bottom of the welding robot body, a welding protection box is arranged on the outer side of the welding gun, the bottom of the welding protection box abuts against the outer wall of the silo, a smoke treatment cover is arranged on the outer side of the welding protection box, and a surface cleaning assembly is arranged at the end of the welding protection box. By arranging a humidity sensor and a drying box on the welding wire box, damp-proof treatment can be conducted on welding wires, dissipation of welding smoke can be reduced by arranging the welding protection box, a lens of a camera is protected, and the influence of external air on protection gas exhausted from the end of the welding gun is reduced; and by arranging the welding preheating assembly and the welding seam heat preservation assembly, the welding stress before and after welding can be reduced.

Description

Technical Field

[0001] This invention relates to the field of welding robot technology, specifically to a track-mounted mobile welding robot for use on the outer wall of a silo. Background Technology

[0002] A welding robot is a programmable automated device that performs welding tasks through a system consisting of a robotic arm, welding power source, wire feeder, and sensors. It can repeatedly complete various welding operations with high precision, high efficiency, and high stability, replacing manual labor in harsh and dangerous environments. A track-mounted mobile welding robot is an automated device that moves along a preset track to perform welding tasks. It consists of the robot body, a track system, and a control system. Its core principle is to guide the robot's movement through a track to achieve precise welding of fixed workpieces, making it particularly suitable for automated welding of long welds, circumferential welds, and large structural components. Its types generally include: Ground-rail type: The track is fixed to the ground, and the robot moves linearly along the track, with a large working range, suitable for large steel structures, H-beams, and long welds; Circular track: The track is circular, suitable for circumferential welding of pipelines and pressure vessels, and applicable to petrochemical pipelines and pressure vessels; Flexible track: It can be bent and segmented, adapting to curved surfaces and complex shapes, suitable for ships, spherical tanks, and irregularly shaped components; Gantry type: The track is installed on a gantry frame, and the robot can move in three dimensions, suitable for large equipment manufacturing and bridge construction.

[0003] When welding the outer wall of a silo, the steel plate is usually rolled into a cylindrical shape and welded on both sides. The weld is a long weld, so a ground-rail type track-mounted mobile welding robot is often used. However, the existing track-mounted mobile welding robot has the following defects during welding: The welding gun of a general welding robot is equipped with a camera at the end to observe the weld in real time. However, because the welding wire produces a lot of smoke and dust during welding, it affects the shooting effect. Moreover, the smoke and dust will stick to the camera lens and affect the service life of the camera lens.

[0004] In addition, during the welding of the outer wall of the silo, uneven heating of the weld will generate large welding stress, and excessive cooling will easily lead to cold cracks. If the base material contains hardened structure, or the hydrogen content in the weld is too high, hydrogen-induced cracks will also be triggered. These cracks will seriously damage the structural strength of the cylinder, and may even lead to leakage and breakage during use.

[0005] In addition, when the track-mounted mobile welding robot moves, the internal mechanical components will vibrate slightly during operation. This vibration will eventually be transmitted to the end of the welding torch, causing the welding torch to shake during welding, which will affect the quality and aesthetics of the weld. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a track-mounted mobile welding robot for the outer wall of silos, which can treat the fumes generated during welding, reduce the vibration of the welding torch during welding, and reduce welding stress, thereby improving welding quality and aesthetics and solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a track-type mobile welding robot for the outer wall of a silo, comprising a ground rail, a first mobile platform mounted on the ground rail, a second mobile platform mounted on top of the first mobile platform, and a welding robot body mounted on one side of the second mobile platform. The bottom of the first mobile platform is provided with rollers and an electric cleaning brush. The rollers move on the ground rail, and the electric cleaning brushes are located on both sides of the rollers, with the bottom of the electric cleaning brushes contacting the top surface of the ground rail. The top of the first mobile platform is equipped with an electric slide rail, and the second mobile platform slides on the electric slide rail. A welding wire box is installed on the outside of the bottom rotating arm of the welding robot body. The welding wire box contains a welding wire spool. A wire feeder is installed on the outside of the top rotating arm of the welding robot body. A welding torch is installed at the end of the welding robot body. A welding protection box is installed on the outside of the welding torch. The bottom of the welding protection box abuts against the outer wall of the silo. A fume hood is installed on the outside of the welding protection box. A surface cleaning component is installed at the end of the welding protection box.

[0008] Preferably, the welding wire box has a hinged door on its outer side, with a handle and a humidity sensor on the door. A drying box is installed on the inner wall of the welding wire box. A rotating shaft seat is installed at the center of the inside of the welding wire box, and a drive shaft is installed at the end of the rotating shaft seat. The drive shaft is connected to the welding wire drum. A wire outlet is provided on the outer surface of the welding wire box. A welding wire cleaning brush is provided on the inner wall of the wire outlet. The welding wire cleaning brush is columnar. A baffle roller is provided on the inner wall of the welding wire box.

[0009] Preferably, a one-way preload assembly is provided between the shaft seat and the transmission shaft. The one-way preload assembly consists of ratchet teeth arranged in a circumferential array on the transmission shaft and pawls arranged on the shaft seat. The ratchet teeth and pawls are engaged in a snap-fit ​​configuration.

[0010] Preferably, a lighting lamp and a camera are provided on the outside of the welding torch, with the camera located at the bottom of the lighting lamp. A vibration damping sleeve is installed on the top of the welding protective box, and a vibration damping pad is installed inside the vibration damping sleeve. The bottom of the welding torch is inserted into the inside of the vibration damping sleeve and abuts against the vibration damping pad.

[0011] Preferably, the welding protection box is equipped with two rows of symmetrically distributed positioning wheels on its exterior. The positioning wheels abut against the outer wall of the silo, and the positioning wheels are symmetrically arranged on both sides of the weld seam on the outer wall of the silo.

[0012] Preferably, the fume extraction hood is connected to the welding protection box, the end of the fume extraction hood is located at the end of the welding torch, a fume filter layer is installed on the inner wall of the fume extraction hood, and an air suction pipe is provided at the tail of the fume extraction hood, which is connected to an external air suction pump.

[0013] Preferably, the surface cleaning assembly includes an elastic abutment plate, a drive motor, a surface cleaning brush, and a surface washing brush. The elastic abutment plate is connected to the end of the welding protective box. The drive motor is installed on the top of the elastic abutment plate. The elastic abutment plate has an inner groove, and a gear set is installed inside the inner groove. The drive motor is connected to the gear set. The surface cleaning brush is connected to the gear set and is installed at the bottom of the elastic abutment plate.

[0014] Preferably, the surface cleaning brush is located behind the surface sweeping brush, and acetone cleaning agent is provided on the elastic abutment plate. The bottom of the acetone cleaning agent is connected to the surface cleaning brush through a dropper. The surface sweeping brush and the surface cleaning brush are arranged in an equilateral triangle and abut against the outer wall of the silo. The welding protective box is equipped with a welding preheating component and a weld insulation component. The welding preheating component and the weld insulation component are located on both sides of the welding gun. The welding preheating component is located on one side of the elastic abutment plate. The welding preheating component and the weld insulation component are respectively equipped with a first heating tube and a second heating tube.

[0015] Preferably, a welding wire cutting assembly is installed on the inner wall of the welding protective box. The welding wire cutting assembly consists of a fixed plate, an electric push rod, and a cutting shear. The fixed plate is installed inside the welding protective box, and the electric push rod is installed on the fixed plate. The output end of the electric push rod is connected to the hinge of the cutting shear. A sliding groove is provided on the fixed plate, and the two tail ends of the cutting shear are slidably connected inside the sliding groove. The cutting shear is located on one side of the end of the welding torch.

[0016] Preferably, the wire feeder is equipped with a wire feeding roller inside, and a roller cleaning frame is installed on the inner bottom wall of the wire feeder. A cleaning brush is installed at the end of the roller cleaning frame, and the cleaning brush abuts against the wire feeding roller.

[0017] Beneficial effects Compared with the prior art, the present invention provides a track-mounted mobile welding robot for the outer wall of silos, which has the following advantages: 1. This track-mounted mobile welding robot for the outer wall of silos can prevent moisture from entering the welding wire by using a humidity sensor on the welding wire box and a drying box. In addition, the welding wire cleaning brush can clean the flux core on the surface of the welding wire during the conveying process. The one-way pre-tightening component can ensure that the welding wire on the welding wire drum is in a tight state during the conveying process, preventing the welding wire from loosening and avoiding the deformation of the welding wire during feeding.

[0018] 2. This track-mounted mobile welding robot for the outer wall of silos, through the setting of a welding protective box, can reduce the emission of welding fumes, not only protecting the camera lens, but also reducing the impact of external air on the protective gas discharged from the welding torch tip, thereby improving the protective effect of the protective gas on the weld.

[0019] 3. The track-mounted mobile welding robot used for the outer wall of the silo, through the setting of positioning wheels and vibration damping sleeves, the positioning wheels can support the welding protective box to make stable linear movement on the outer wall of the silo, reducing the vibration of the welding gun end. In addition, the vibration damping pad inside the vibration damping sleeve can further reduce the vibration of the welding gun end, improve the welding effect, and ensure the aesthetics of the weld after vibration reduction.

[0020] 4. This track-mounted mobile welding robot for the outer wall of silos can reduce welding stress before and after welding and improve welding effect by setting up welding preheating components and weld insulation components. In addition, the surface cleaning components can clean dust and oil stains at the weld, further improving welding quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the second mobile platform of the present invention; Figure 3 This is a schematic diagram of the overall structure of the welding robot body of the present invention; Figure 4 This is a schematic diagram of the welding torch structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the welding protection box of the present invention; Figure 6 This is a side sectional view of the welding protection box of the present invention; Figure 7 This is a schematic diagram of the welding wire box of the present invention; Figure 8 This is a diagram showing the internal structure of the welding wire box of the present invention; Figure 9 This is a side sectional view of the welding wire box of the present invention; Figure 10 This is a schematic diagram of the internal structure of the wire feeder of the present invention.

[0022] In the diagram: 1. Ground rail; 2. First moving platform; 201. Roller; 202. Electric cleaning brush; 203. LiDAR; 204. Anti-derailment device; 3. Second moving platform; 301. Cooling water tank; 302. Welding power supply; 303. Robotic arm control cabinet; 304. Battery; 305. Transformer; 306. Warning light; 4. Welding robot body; 5. Wire feeder; 501. Wire feeding roller; 502. Roller cleaning frame; 503. Cleaning brush plate; 6. Welding wire box; 601. Box door; 602. Handle; 603. Humidity sensor; 604. Drying box; 605. Shaft seat; 606. Transmission shaft; 607. Welding wire spool; 608. Baffle roller; 609. Wire outlet. 610. Welding wire cleaning brush; 611. Ratchet; 612. Pawl; 7. Welding torch; 8. Lighting lamp; 9. Camera; 10. Welding protective box; 11. Vibration damping sleeve; 1101. Vibration damping pad; 12. Positioning and walking wheel; 13. Fume treatment hood; 14. Suction pipe; 15. Fume filter layer; 16. Elastic abutment plate; 17. Drive motor; 1701. Gear set; 18. Surface cleaning brush; 19. Surface cleaning brush; 20. Acetone cleaner; 21. Welding preheating assembly; 2101. First heating element; 22. Weld seam insulation assembly; 2201. Second heating element; 23. Welding wire cutting assembly; 2301. Fixing plate; 2302. Electric push rod; 2303. Cutting shears. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1 For one embodiment of the present invention, please refer to [link / reference]. Figures 1 to 3 and Figure 10 A track-type mobile welding robot for the outer wall of a silo includes a ground rail 1, a first mobile platform 2 set on the ground rail 1, a second mobile platform 3 installed on the top of the first mobile platform 2, and a welding robot body 4 set on one side of the second mobile platform 3. The robot body is characterized in that: the bottom of the first mobile platform 2 is provided with rollers 201 and electric cleaning brushes 202, the rollers 201 move on the ground rail 1, and the electric cleaning brushes 202 are set on both sides of the rollers 201, and the bottom of the electric cleaning brushes 202 contacts the top surface of the ground rail 1. The top of the first mobile platform 2 is equipped with an electric slide rail, and the second mobile platform 3 slides on the electric slide rail; the tail of the first mobile platform 2 is equipped with a laser radar 203 and an anti-derailment device 204; the interior of the second mobile platform 3 is equipped with a cooling water tank 301, a welding power supply 302, a robotic arm control cabinet 303, a storage battery 304, and a transformer 305; the top of the second mobile platform 3 is equipped with a warning light 306 and a cooling fan.

[0025] A welding wire box 6 is installed on the outside of the bottom rotating arm of the welding robot body 4. A welding wire spool 607 is installed inside the welding wire box 6. A wire feeder 5 is installed on the outside of the top rotating arm of the welding robot body 4. A welding torch 7 is installed at the end of the welding robot body 4. A welding protection box 10 is installed on the outside of the welding torch 7. The bottom of the welding protection box 10 abuts against the outer wall of the silo. A fume hood 13 is installed on the outside of the welding protection box 10. A surface cleaning component is installed at the end of the welding protection box 10. The wire feeder 5 is equipped with a wire feeding roller 501 inside. A roller cleaning frame 502 is installed on the inner bottom wall of the wire feeder 5. A cleaning brush 503 is installed at the end of the roller cleaning frame 502 and abuts against the wire feeding roller 501.

[0026] Specifically, before the track-type mobile welding robot welds the silo, the silo is bent and aligned on both sides by corresponding clamps so that the welding area is parallel to the ground rail 1. Then, the welding robot body 4 is rotated by the robotic arm control cabinet 303. The welding protective box 10 at the end of the welding robot body 4 abuts against the outer wall of the silo. Then, the welding torch 7 abuts against the welding area. In addition, the welding torch 7 sprays protective gas, which is provided by an air pump located outside the track-type mobile welding robot to protect the welding. During welding, the first moving platform 2 moves on the ground rail 1, and the second moving platform 3 moves on the first moving platform 2. The welding torch 7 is then placed against the end of the weld seam in the silo, and the welding power supply 302 is started to weld the weld seam. In addition, during the movement of the first moving platform 2, in order to prevent impurities on the ground rail 1 from affecting the movement stability of the first moving platform 2 and to improve the welding quality, electric cleaning brushes 202 are installed on both sides of the roller 201. By starting the electric cleaning brushes 202, the surface of the ground rail 1 is cleaned to prevent impurities from affecting the movement of the roller 201, so that the welding torch 7 moves stably during welding and the welding quality is improved. During welding, the welding wire is placed in the welding wire box 6 and continuously and stably fed to the end of the welding gun 7 by the wire feeder 5. When the welding wire is fed by the wire feeder 5, some slag will remain on the wire feeder 501 due to the compression of the welding wire. In order to ensure the stability of the welding wire feeding, this application provides a roller cleaning frame 502 and a cleaning brush 503 on one side of the wire feeder 501. The cleaning brush 503 abuts against the wire feeder 501 to clean the slag adhering to the wire feeder 501, thereby improving the stability of the welding wire feeding and further improving the welding quality.

[0027] Example 2 As one embodiment of the present invention, please refer to Figures 7 to 9 A track-mounted mobile welding robot for the outer wall of a silo, based on embodiment 1, further includes a door 601 hinged to the outside of a welding wire box 6, a handle 602 and a humidity sensor 603 on the door 601, a drying box 604 on the inner wall of the welding wire box 6, a rotating shaft seat 605 installed at the center of the inside of the welding wire box 6, a transmission shaft 606 at the end of the rotating shaft seat 605, the transmission shaft 606 being connected to the welding wire drum 607, a wire outlet 609 on the outer surface of the welding wire box 6, a welding wire cleaning brush 610 on the inner wall of the wire outlet 609, the welding wire cleaning brush 610 being columnar, and a baffle roller 608 on the inner wall of the welding wire box 6. A one-way preload assembly is provided between the shaft seat 605 and the transmission shaft 606. The one-way preload assembly consists of ratchet teeth 611 arranged in a circumferential array on the transmission shaft 606 and pawls 612 arranged on the shaft seat 605. The ratchet teeth 611 and pawls 612 are engaged in a snap-fit ​​configuration.

[0028] Specifically, the welding wire box 6 is an important component required for welding. It is a structure that stores the welding wire and stably feeds it out. In this application, the welding wire spool 607 is installed on the drive shaft 606 of the welding wire box 6. A one-way pre-tightening component is provided between the drive shaft 606 and the shaft seat 605. The one-way pre-tightening component is a ratchet 611 and a pawl 612. In addition, a coil spring is provided at the rotational connection between the pawl 612 and the shaft seat 605, so that the welding wire spool 607 can have a pre-tightening effect when rotating. This prevents the welding wire spool 607 from being affected by inertia when the wire feeder 5 pulls the welding wire, so that the length of the extended welding wire is too long. This improves the stability of the welding wire feeding and ensures that the welding wire remains taut during the feeding process, preventing the welding wire from bending and damaging the flux core.

[0029] In addition, since the welding wire needs to be stored inside the welding wire box 6 for a long time, and the flux core of the welding wire is prone to welding instability after getting damp, a drying box 604 is set inside the welding wire box 6 to ensure that the welding wire is not affected. A humidity sensor 603 is set outside the welding wire box 6, and the wire outlet 609 of the welding wire box 6 is set as a small tubular opening. This can ensure that the welding wire is kept dry inside the welding wire box 6, prevent the welding wire from getting damp, and improve the storage time of the welding wire. During the use of welding wire, the welding wire is pulled out from the welding wire reel 607, and then discharged from the wire outlet 609 through the guide roller 608. When the welding wire passes through the wire outlet 609, since the welding wire is coiled on the welding wire reel 607, there will be some flux residue on the surface. The surface residue can be cleaned by the welding wire cleaning brush 610 inside the wire outlet 609, reducing the amount of flux residue falling into the wire feeding hose during the conveying process.

[0030] Example 3 As one embodiment of the present invention, please refer to Figures 3 to 6 A track-mounted mobile welding robot for the outer wall of a silo, based on embodiment 1, further includes a lighting lamp 8 and a camera 9 on the outside of the welding torch 7, the camera 9 being located at the bottom of the lighting lamp 8, a vibration damping sleeve 11 installed on the top of the welding protective box 10, a vibration damping pad 1101 installed inside the vibration damping sleeve 11, the bottom of the welding torch 7 being inserted into the inside of the vibration damping sleeve 11 and abutting against the vibration damping pad 1101, and two rows of symmetrically distributed positioning wheels 12 installed on the outside of the welding protective box 10, the positioning wheels 12 abutting against the outer wall of the silo, and the positioning wheels 12 being symmetrically arranged on both sides of the weld seam on the outer wall of the silo. The fume hood 13 is connected to the welding protection box 10. The end of the fume hood 13 is located at the end of the welding torch 7. A fume filter layer 15 is installed on the inner wall of the fume hood 13. An air suction pipe 14 is provided at the tail of the fume hood 13 and is connected to an external air suction pump.

[0031] Specifically, when welding the seams of silos, traditional welding robots typically place the welding torch at the seam and drive the welding torch 7 to move for welding. However, because the welding torch 7 is located at the end of the robot and is affected by the movement of the platform, the end of the welding torch 7 will generate slight vibration, causing the weld to bend, which affects the welding quality and aesthetics.

[0032] Therefore, this application provides a welding protection box 10 at the end of the welding torch 7, and installs a vibration damping sleeve 11 on the welding protection box 10. When welding, the welding torch 7 is subjected to vibration damping treatment at the end of the welding torch 7 by the vibration damping pad 1101 inside the vibration damping sleeve 11, thereby improving the welding effect and the aesthetics of the weld. In addition, the weld seam can be inspected in real time by the lighting lamp 8 and the camera 9, which improves the welding quality. Furthermore, since welding generates fumes that can damage the lens of the camera 9, a welding protection box 10 is set up to cover the end of the welding torch 7. In addition, a fume treatment hood 13 and a fume filter layer 15 are set up. When welding generates fumes, the fumes can be filtered and sucked away by an external air pump to protect the lens of the camera 9. The air pump's suction rate is much lower than the rate of the protective gas discharged from the end of the welding torch 7, which can ensure that the protective gas at the end of the welding torch 7 is in a relatively stable state. The presence of the welding protection box 10 can effectively reduce the impact of external airflow on the protective gas. In addition, positioning wheels 12 are installed on the outside of the welding protective box 10, and the positioning wheels 12 travel on both sides of the weld seam of the silo. The positioning wheels 12 travel in a straight line, so that the welding torch 7 maintains a stable straight movement when welding the weld seam. Furthermore, the contact between the welding protective box 10 and the silo can further improve the stability of the welding torch 7 during welding and improve the vibration reduction effect of the welding torch 7 during operation.

[0033] Example 4 As one embodiment of the present invention, please refer to Figure 5 and Figure 6 A track-mounted mobile welding robot for the outer wall of a silo, based on Embodiment 1, further includes a surface cleaning assembly comprising an elastic abutment plate 16, a drive motor 17, a surface cleaning brush 18, and a surface cleaning brush 19. The elastic abutment plate 16 is connected to the end of the welding protective box 10. The drive motor 17 is installed on the top of the elastic abutment plate 16. An inner groove is provided inside the elastic abutment plate 16, and a gear set 1701 is provided inside the inner groove. The drive motor 17 is drivenly connected to the gear set 1701. The surface cleaning brush 18 is drivenly connected to the gear set 1701, and the surface cleaning brush 18 is installed at the bottom of the elastic abutment plate 16. The surface cleaning brush 19 is located behind the surface cleaning brush 18. Acetone cleaning agent 20 is provided on the elastic abutment plate 16. The bottom of the acetone cleaning agent 20 is connected to the surface cleaning brush 19 through a dropper. The surface cleaning brush 18 and the surface cleaning brush 19 are arranged in an equilateral triangle. The surface cleaning brush 18 and the surface cleaning brush 19 abut against the outer wall of the silo. The welding protective box 10 is equipped with a welding preheating component 21 and a weld insulation component 22. The welding preheating component 21 and the weld insulation component 22 are located on both sides of the welding torch 7. The welding preheating component 21 is located on one side of the elastic abutment plate 16. The welding preheating component 21 and the weld insulation component 22 are respectively equipped with a first electric heating tube 2101 and a second electric heating tube 2201. A welding wire shearing assembly 23 is installed on the inner wall of the welding protective box 10. The welding wire shearing assembly 23 consists of a fixed plate 2301, an electric push rod 2302, and a cutting shear 2303. The fixed plate 2301 is installed inside the welding protective box 10, and the electric push rod 2302 is installed on the fixed plate 2301. The output end of the electric push rod 2302 is connected to the hinge of the cutting shear 2303. A sliding groove is provided on the fixed plate 2301, and the two tail ends of the cutting shear 2303 are slidably connected inside the sliding groove. The cutting shear 2303 is located on one side of the end of the welding torch 7.

[0034] Specifically, during welding, the weld seam may become contaminated with dust or oil due to the factory environment. These impurities can seriously affect the welding effect, so they need to be cleaned before welding. A surface cleaning component is installed at the end of the welding protection box 10. The drive motor 17 drives the gear set 1701 to rotate the surface cleaning brush 18 to clean the dust on the weld seam. Then, the acetone cleaner 20 and the surface cleaning brush 19 are used to treat the oil on the weld seam, reducing the impact of dust and oil on the welding and further improving the welding quality.

[0035] Due to the rapid temperature rise and fall during welding, the welding thermal stress at the weld joint is relatively large, and its toughness will decrease significantly. Therefore, this application sets a welding preheating component 21 and a weld insulation component 22 on both sides of the welding torch 7 end inside the welding protective box 10. The weld joint is preheated by the first electric heating tube 2101 before welding, and the preheating temperature is set at 150-200 degrees Celsius. After welding is completed, the weld joint is insulated by the second electric heating tube 2201, and the insulation temperature is set at 200-250 degrees Celsius, thereby improving the welding quality.

[0036] After a silo is completely welded, the welding torch 7 stops supplying power, causing the welding wire tip to melt into a small bead. This bead needs to be removed during subsequent welding to avoid affecting the welding effect. However, when removing it manually, the welding torch tip is still hot after welding, posing a risk of burns to the operator. Therefore, this application includes a welding wire shearing assembly 23 inside the welding protection box 10. The electric push rod 2302 drives the cutting shear 2303 to move and cut, which can cut the small bead melted at the end of the welding wire, facilitating continuous welding with the welding torch 7.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A track type mobile welding robot for the outer wall of a silo, comprising a ground rail, a first mobile platform arranged on the ground rail, a second mobile platform mounted on the top of the first mobile platform, and a welding robot main body arranged on one side of the second mobile platform, characterized in that: The bottom of the first mobile platform is provided with a roller and an electric cleaning brush, the roller moves on the ground rail, the electric cleaning brush is arranged on both sides of the roller, and the bottom of the electric cleaning brush is in contact with the top surface of the ground rail. The top of the first mobile platform is provided with an electric sliding rail, and the second mobile platform slides on the electric sliding rail. The outer side of the bottom rotating arm of the welding robot body is provided with a welding wire box, the inside of the welding wire box is provided with a welding wire reel, the outer side of the top rotating arm of the welding robot body is provided with a wire feeder, the end of the welding robot body is provided with a welding gun, the outer side of the welding gun is provided with a welding protection box, the bottom of the welding protection box is in abutment with the outer wall of the silo, the outer side of the welding protection box is provided with a smoke dust treatment cover, and the end of the welding protection box is provided with a surface cleaning assembly.

2. A rail-mounted welding robot for the exterior wall of a silo according to claim 1, characterized in that: The outer side of the welding wire box is hinged with a box door, the box door is provided with a handle and a humidity sensor, the inner wall of the welding wire box is provided with a drying box, the inside of the welding wire box is provided with a rotating shaft seat at the center, the end of the rotating shaft seat is provided with a transmission rotating shaft, the transmission rotating shaft is in transmission connection with the welding wire reel, the outer surface of the welding wire box is provided with a wire outlet, the inner wall of the wire outlet is provided with a welding wire cleaning brush, the welding wire cleaning brush is in a columnar shape, and the inner wall of the welding wire box is provided with a blocking roller.

3. A rail-mounted welding robot for the exterior wall of a silo according to claim 2, characterized in that: A one-way pre-tightening assembly is arranged between the rotating shaft seat and the transmission rotating shaft, the one-way pre-tightening assembly is composed of a plurality of circumferentially distributed ratchets arranged on the transmission rotating shaft and a pawl arranged on the rotating shaft seat, and the ratchets and the pawl are in clamping connection.

4. A rail mounted welding robot for the exterior wall of a silo according to claim 1, characterized in that: The outer side of the welding gun is provided with an illuminating lamp and a camera, the camera is located at the bottom of the illuminating lamp, the top of the welding protection box is provided with a damping sleeve, the inside of the damping sleeve is provided with a damping pad, and the bottom of the welding gun is inserted into the inside of the damping sleeve and in abutment with the damping pad.

5. A rail mounted welding robot for the exterior wall of a silo according to claim 1, characterized in that: The welding protection box is provided on the outside with two rows of symmetrically distributed positioning walking wheels, the positioning walking wheels are in abutment with the outer wall of the silo, and the positioning walking wheels are symmetrically arranged on both sides of the welding seam of the outer wall of the silo.

6. A rail mounted welding robot for the exterior wall of a silo according to claim 1, characterized in that: The smoke dust treatment cover is in communication with the welding protection box, the end of the smoke dust treatment cover is located at the end of the welding gun, the inner wall of the smoke dust treatment cover is provided with a smoke dust filter layer, and the tail of the smoke dust treatment cover is provided with a suction pipe connected with an external suction pump.

7. A rail mounted welding robot for the exterior wall of a silo as claimed in claim 1, characterized in that: The surface cleaning assembly comprises an elastic abutting plate, a transmission motor, a surface cleaning brush and a surface cleaning brush, the elastic abutting plate is connected with the end of the welding protection box, the transmission motor is installed at the top of the elastic abutting plate, the inside of the elastic abutting plate is provided with an inner groove, the inside of the inner groove is provided with a gear set, the transmission motor is in transmission connection with the gear set, the surface cleaning brush is in transmission connection with the gear set, and the surface cleaning brush is installed at the bottom of the elastic abutting plate.

8. A rail-mounted welding robot for the exterior wall of a silo according to claim 7, characterized in that: The surface cleaning brush is located at the rear side of the surface cleaning brush, the elastic abutting plate is provided with a acetone cleaning agent, the bottom of the acetone cleaning agent is connected with the surface cleaning brush through a dropper, the surface cleaning brush and the surface cleaning brush are arranged in a regular triangle, and the surface cleaning brush and the surface cleaning brush are in abutment with the outer wall of the silo. The inside of the welding protection box is provided with a welding preheating assembly and a welding seam heat preservation assembly, the welding preheating assembly and the welding seam heat preservation assembly are arranged on both sides of the welding gun, the welding preheating assembly is located on one side of the elastic abutting plate, and the welding preheating assembly and the welding seam heat preservation assembly are respectively provided with a first electric heating pipe and a second electric heating pipe.

9. A rail mounted welding robot for the exterior wall of a silo as claimed in claim 1, characterized in that: The inner wall of the welding protection box is provided with a welding wire cutting assembly, which is composed of a fixing plate, an electric push rod and a cutting shear.

10. A rail mounted welding robot for the exterior wall of a silo as claimed in claim 1, characterized in that: The inside of the wire feeder is provided with a wire feeding roller, and the inner bottom wall of the wire feeder is provided with a roller cleaning frame. The end of the roller cleaning frame is provided with a cleaning brush plate. The cleaning brush plate abuts against the wire feeding roller.

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