Welding robot moving operation platform

Abstract

The invention provides a welding robot moving operation platform, and belongs to the technical field of welding robots, the welding robot moving operation platform comprises a first rail, a second rail is arranged on one side of the first rail, a moving plate is arranged on the upper side of the first rail, a lifting plate is arranged on the upper side of the moving plate, and a lifting mechanism is arranged on the lower side of the lifting plate. Through the arrangement of the first rail, the second rail, the moving plate, the first motor, the transmission gear, the transmission rack and the rail changing mechanism, rails are laid in an operation area, the moving operation platform can accurately move along the rails, the welding robot is accurately conveyed to a designated welding position, moving operation of the welding robot is achieved, and the welding efficiency is improved. The welding robot can be subjected to rail changing, so that the welding robot can move on the first rail and the second rail, the operation range of the welding robot is remarkably widened, and the problem that in the prior art, rail changing movement of the welding robot is inconvenient is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding robots, and in particular to a mobile working platform of a welding robot. Background Art

[0002] Currently, welding, as a key joining process in modern manufacturing, is widely used in numerous fields, including automotive manufacturing, shipbuilding, aerospace, and construction engineering. Welding quality directly impacts the structural strength, safety, and service life of a product, placing extremely high demands on the precision, efficiency, and quality stability of the welding process.

[0003] With the continuous development of industrial automation technology, welding robots have emerged. Welding robots have the advantages of high welding precision, stable quality, high production efficiency, and continuous operation, which can effectively solve the problems existing in manual welding.

[0004] At present, most welding robots are usually installed in a fixed manner during application, that is, the welding robot is fixed on a specific workstation and can only perform welding operations on workpieces within a certain range. This fixed installation method limits the operating range of the welding robot. When the workpiece to be welded is large in size or complex in shape, it is necessary to frequently adjust the position of the workpiece or rearrange the welding robot, which not only increases production preparation time and cost, but also reduces production efficiency. The existing technology also uses tracks to move the welding robot to form a mobile working platform, but it is impossible to adjust the working height of the welding robot according to the height of the workpiece, which limits its application range. In addition, impurities are easily accumulated on the rack inside the track, making it inconvenient to clean it, which may affect the smoothness of the platform's movement. At the same time, the existing technology can only move the welding robot on one track, making it inconvenient to change the track and move the welding robot to another track, resulting in a limited operating range of the welding robot.

[0005] Therefore, we made improvements to this and proposed a mobile working platform for welding robots. Summary of the Invention

[0006] The purpose of the present invention is to solve the existing problems of inconvenience in adjusting the height of a welding robot, inconvenience in cleaning the track and inconvenience in achieving track change and movement.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0008] The welding robot moves the working platform to improve the above problems.

[0009] The present invention is specifically as follows:

[0010] The lifting mechanism is a bottom end of the lifting mechanism, and the lifting mechanism is a bottom end of the lifting mechanism. The lifting mechanism is a bottom end of the lifting mechanism, and the lifting mechanism is a bottom end of the lifting mechanism. The lifting mechanism is a bottom end of the lifting mechanism, and the lifting mechanism is a bottom end of the lifting mechanism.

[0011] As a preferred technical solution of the present invention, the lifting mechanism includes two groups of fixed blocks symmetrically and fixed on the upper end surface of the movable plate, each group of the fixed blocks is rotatably connected to the first screw, one of the fixed blocks inside is fixedly connected to the second motor, the driving end of the second motor is fixedly connected to its shaft end close to the first screw, the lower end surface of the lifting plate is symmetrical and fixedly connected with two groups of connecting heads, and a sliding rod is fixedly connected between the first screw and the sliding rod. A lifting frame is provided between the bottom two ends of the lifting frame, and the first fixed seat and the moving block are respectively rotatably connected. The bottom end of the first fixed seat is fixedly connected to the moving plate, the moving block is threadedly connected to the first screw, and the top two ends of the lifting frame are respectively rotatably connected to the second fixed seat and the sliding block, the top of the second fixed seat is fixedly connected to the lifting plate, and the sliding block is slidably connected to the sliding rod, the outer end of the first screw passes through the outer fixed block and is fixedly connected to the first bevel gear, and the side walls of the outer fixed block are fixedly connected to the connecting blocks, and a transmission rod is rotatably connected between the connecting blocks, and the transmission rod is fixedly connected with two second bevel gears that are respectively meshed with the first bevel gear.

[0012] As a preferred technical solution of the present invention, the cleaning mechanism includes a first gear arranged on the upper side of the transmission gear, the first gear is fixedly connected to the rotating shaft, and two connecting shafts are symmetrically and rotatably connected on the movable plate. The two connecting shafts are fixedly connected to a second gear meshing with the first gear, and the bottom ends of the connecting shafts are fixedly connected to a mounting head, a cleaning brush is provided on the mounting head, and a nut is provided on the lower side of the cleaning brush, and the nut is threadedly connected to the mounting head.

[0013] As a preferred technical solution of the present invention, the track changing mechanism includes a base plate arranged between the first track and the second track, a hydraulic cylinder is fixedly connected to the base plate, a driving end of the hydraulic cylinder is fixedly connected to a moving seat, a guide column is slidably connected to the side wall of the base plate, the inner end of the guide column is fixedly connected to the moving seat, a bearing is fixedly connected at the center of the upper end face of the moving seat, a track changing shaft is fixedly connected to the inner side wall of the inner ring of the bearing, a worm gear is fixedly connected to the track changing shaft, two connecting seats are fixedly connected to the moving seat, a worm gear meshing with the worm gear is rotatably connected between the two connecting seats, a third motor is fixedly connected to one of the connecting seats, and the driving end of the third motor is fixedly connected to the shaft end of the worm gear.

[0014] As a preferred technical solution of the present invention, the top of the track-changing shaft is fixedly connected to a shift frame, the lower end surface of the shift frame is symmetrical and fixedly connected to two support columns, one end in the shift frame is rotatably connected to a second screw, a fourth motor is fixedly connected to the shift frame, the driving end of the fourth motor is fixedly connected to the shaft end of the second screw, a push-pull block is threadedly connected to the second screw, and a guide rod is slidably connected to the end of the push-pull block away from the second screw, and both ends of the guide rod are respectively fixedly connected to the side walls of the shift frame.

[0015] As a preferred technical solution of the present invention, the top of the push-pull block is fixedly connected to a supporting frame, the upper end surface of the supporting frame is symmetrical and fixedly connected to two second slide rails that match the slide seat respectively, a connecting rack is fixedly connected inside the supporting frame, and the outer end of the supporting frame is fixedly connected to a first limit block by a hexagon socket bolt.

[0016] As a preferred technical solution of the present invention, the upper end surface of the base plate is fixedly connected to an assembly block, the assembly block is fixedly connected to a connecting plate by bolts, and the end of the connecting plate away from the assembly block is fixedly connected to the first track by bolts.

[0017] As a preferred technical solution of the present invention, two groups of connecting ears are symmetrically and fixedly connected on the front and rear side walls of the base plate, and a first threaded column is provided in each connecting ear. The bottom end of the first threaded column is fixedly connected to a first supporting foot, and two first nuts are symmetrically and threadedly connected on the first threaded column.

[0018] As a preferred technical solution of the present invention, a group of supports are fixedly connected to the outer walls of the first rail and the second rail at equal intervals, a second threaded column is provided in the support, the bottom end of the second threaded column is fixedly connected to a second supporting foot, and two second nuts are symmetrically and threadedly connected on the second threaded column.

[0019] As a preferred technical solution of the present invention, the outer ends of the first rail and the second rail are fixedly connected to the second limit block by hexagon socket bolts, and a connecting frame is provided between the first rail and the second rail, and the two ends of the connecting frame are fixedly connected to the first rail and the second rail by bolts respectively.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the solution of the present invention:

[0022] 1. By providing the first track, the second track, the movable plate, the first motor, the transmission gear, the transmission rack and the track-changing mechanism, it is possible to lay the track in the working area. The mobile working platform can move precisely along the track, accurately transporting the welding robot to the designated welding position, realizing the mobile operation of the welding robot. The welding robot can be switched so that the welding robot can move on the first track and the second track respectively, significantly increasing the operating range of the welding robot and solving the problem of inconvenience in switching tracks for the welding robot in the prior art.

[0023] 2. Through the setting of the lifting mechanism and cleaning mechanism, the cleaning brush is driven to clean the rack during the movement of the movable plate, thereby ensuring the cleanliness of the rack and the smoothness of movement. It can also flexibly adjust the height of the welding robot, thereby improving the application range of the welding robot and solving the problems of inconvenience in cleaning the track and adjusting the height of the welding robot in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0025] Figure 2 A schematic diagram of the overall structure of the present invention from another perspective;

[0026] Figure 3 A schematic structural diagram of the first track and the second track provided by the present invention;

[0027] Figure 4 A schematic diagram of the connection structure between the transmission gear and the transmission rack provided by the present invention;

[0028] Figure 5 A schematic structural diagram of the lifting mechanism provided by the present invention;

[0029] Figure 6 A schematic structural diagram of the cleaning mechanism provided by the present invention;

[0030] Figure 7 A schematic structural diagram of the track-changing mechanism provided by the present invention;

[0031] Figure 8A schematic diagram of the exploded structure of the track-changing mechanism provided by the present invention;

[0032] Figure 9 The present invention provides Figure 7 A schematic diagram of the front structure of FIG.

[0033] Figure 10 The present invention provides Figure 1 Schematic diagram of the front view structure.

[0034] Indicated in the figure:

[0035] 1. First track; 2. Second track; 3. Moving plate; 4. Lifting plate; 5. Lifting mechanism; 501. Fixed block; 502. First screw; 503. Second motor; 504. Connecting head; 505. Sliding rod; 506. Lifting frame; 507. First fixed seat; 508. Moving block; 509. Second fixed seat; 5010. Sliding block; 5011. First bevel gear; 5012. Connecting block; 5013. Transmission rod; 5014. Second bevel gear; 6. Welding robot body; 7. Sliding seat; 8. First slide rail; 9. First motor; 10. Rotating shaft; 11. Transmission gear; 12. Transmission rack; 13. Cleaning mechanism; 1301. First gear; 1302. Connecting shaft; 1303. Second gear; 1304. Mounting head; 1305. Cleaning brush; 1306. Nut; 14. Track changing mechanism; 1401 , bottom plate; 1402, hydraulic cylinder; 1403, moving seat; 1404, guide column; 1405, bearing; 1406, track-changing shaft; 1407, worm gear; 1408, connecting seat; 1409, worm; 1410, third motor; 1411, shift frame; 1412, support column; 1413, second screw; 1414, fourth motor; 1415, push-pull block; 1416, guide rod; 1417, Carrying frame; 1418, second slide rail; 1419, connecting rack; 1420, first limit block; 1421, assembly block; 1422, connecting plate; 1423, connecting ear; 1424, first threaded column; 1425, first supporting foot; 1426, first nut; 15, support; 16, second threaded column; 17, second supporting foot; 18, second nut; 19, second limit block; 20, connecting frame. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in 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 part of the embodiments of the present invention, not all of them.

[0037] like Figures 1-10As shown, this embodiment proposes a mobile working platform for a welding robot, comprising a first track 1, a second track 2 being provided on one side of the first track 1, a moving plate 3 being provided on the upper side of the first track 1, a lifting plate 4 being provided on the upper side of the moving plate 3, a lifting mechanism 5 being provided on the lower side of the lifting plate 4, a welding robot body 6 being installed on the upper end surface of the lifting plate 4, two slides 7 being symmetrically and fixedly connected to the lower end surface of the moving plate 3, a first slide rail 8 matching the slide 7 being fixedly connected to the upper end surface of the first track 1 and the second track 2, a first motor 9 being fixedly connected to the upper end surface of the moving plate 3, and a driving end of the first motor 9 being fixedly connected to the moving plate 3 There is a rotating shaft 10, on which a transmission gear 11 is fixedly connected, and transmission racks 12 matching the transmission gear 11 are fixedly connected to the inner side walls of the first track 1 and the second track 2, respectively. A cleaning mechanism 13 is provided on the lower side of the movable plate 3, and a track changing mechanism 14 is provided between the first track 1 and the second track 2; the rotating shaft 10 and the transmission gear 11 are driven to rotate by the first motor 9, and the rotation of the transmission gear 11 cooperates with the transmission rack 12 to move the movable plate 3, thereby enabling the welding robot to perform mobile operations, and the first track 1 and the second track 2 enable the welding robot to move thereon, thereby increasing the range of operations.

[0038] like Figure 1 、 Figure 5 and Figure 6As shown, as a preferred embodiment, on the basis of the above method, further, the lifting mechanism 5 includes two groups of fixed blocks 501 symmetrically and fixed on the upper end surface of the movable plate 3, each group of fixed blocks 501 are rotatably connected with a first screw 502, one of the inner fixed blocks 501 is fixedly connected with a second motor 503, the driving end of the second motor 503 is fixedly connected to its shaft end close to the first screw 502, the lower end surface of the lifting plate 4 is symmetrically and fixedly connected with two groups of connectors 504, each group of connectors 504 are rotatably connected. The first screw 502 is fixedly connected to the sliding rod 505, and a lifting frame 506 is provided between the first screw 502 and the sliding rod 505. The two ends of the bottom of the lifting frame 506 are rotatably connected to the first fixed seat 507 and the moving block 508. The bottom end of the first fixed seat 507 is fixedly connected to the moving plate 3, and the moving block 508 is threadedly connected to the first screw 502. The two ends of the top of the lifting frame 506 are rotatably connected to the second fixed seat 509 and the slider 5010. The top of the second fixed seat 509 is fixedly connected to the lifting plate 4, and the slider 5010 is connected to the sliding rod 50 5 sliding connection, the outer end of the first screw rod 502 passes through the outer fixed block 501 and is fixedly connected to the first bevel gear 5011, the side walls of the outer fixed block 501 are fixedly connected to the connecting blocks 5012, the connecting blocks 5012 are rotatably connected to the transmission rod 5013, and the transmission rod 5013 is fixedly connected to two second bevel gears 5014 that are respectively meshed with the first bevel gear 5011; the first screw rod 502 is driven by the second motor 503, and the rotation of the first screw rod 502 drives the first bevel gear 5011 connected thereto. 011 rotates, and the rotation of the first bevel gear 5011 drives the second bevel gear 5014 connected to it to rotate, thereby rotating the transmission rod 5013 and the other second bevel gear 5014, and then rotating the other first bevel gear 5011 and the first screw 502, and when the first screw 502 rotates, the moving block 508 moves axially along the first screw 502, thereby changing the shape of the lifting frame 506, thereby pushing the lifting plate 4 to move up and down, and realizing the lifting function of the welding robot body 6.

[0039] like Figure 1 and Figure 6As shown, as a preferred embodiment, on the basis of the above method, further, the cleaning mechanism 13 includes a first gear 1301 arranged on the upper side of the transmission gear 11, the first gear 1301 is fixedly connected to the rotating shaft 10, and the movable plate 3 is symmetrically and rotatably connected to two connecting shafts 1302, and the two connecting shafts 1302 are fixedly connected to a second gear 1303 meshing with the first gear 1301, and the bottom end of the connecting shaft 1302 is fixedly connected to a mounting head 1304, a cleaning brush 1305 is provided on the mounting head 1304, and a nut 1306 is provided on the lower side of the cleaning brush 1305. 1306 is threadedly connected to the mounting head 1304; when the rotating shaft 10 rotates, the first gear 1301 rotates accordingly. The rotation of the first gear 1301 will drive the two second gears 1303 to rotate, and then the connecting shaft 1302 will rotate. The connecting shaft 1302 drives the mounting head 1304 and the cleaning brush 1305 to rotate. During the rotation process, the cleaning brush 1305 can clean the debris on the rack, keep the track clean, and ensure that the movable plate 3 moves smoothly. The nut 1306 is threadedly connected to the mounting head 1304, and the cleaning brush 1305 can be easily installed and removed, which is convenient for the replacement and maintenance of the cleaning brush 1305.

[0040] like Figure 1 、 Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the track-changing mechanism 14 includes a base plate 1401 arranged between the first track 1 and the second track 2, a hydraulic cylinder 1402 is fixedly connected to the base plate 1401, a driving end of the hydraulic cylinder 1402 is fixedly connected to a moving seat 1403, a guide column 1404 is slidably connected to the side wall of the base plate 1401, the inner end of the guide column 1404 is fixedly connected to the moving seat 1403, a bearing 1405 is fixedly connected to the center of the upper end face of the moving seat 1403, a track-changing shaft 1406 is fixedly connected to the inner side wall of the inner ring of the bearing 1405, a worm gear 1407 is fixedly connected to the track-changing shaft 1406, and a worm gear 1407 is fixedly connected to the moving seat 1403. There are two fixed connection seats 1408, and a worm 1409 engaged with the worm wheel 1407 is rotatably connected between the two connection seats 1408. A third motor 1410 is fixedly connected to one of the connection seats 1408, and the driving end of the third motor 1410 is fixedly connected to the shaft end of the worm 1409; the movable seat 1403 can be driven to move by the hydraulic cylinder 1402, thereby providing space for rotation, and the worm 1409 is driven to rotate by the third motor 1410. The rotation of the worm 1409 can drive the worm wheel 1407 and the track change shaft 1406 to rotate, so that the direction of the shift frame 1411 can be adjusted, and it is convenient to dock with the second track 2.

[0041] like Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 and Figure 9 As shown, as a preferred embodiment, on the basis of the above method, further, the top of the track-changing shaft 1406 is fixedly connected to a shift frame 1411, the lower end surface of the shift frame 1411 is symmetrical and fixedly connected to two support columns 1412, one end of the shift frame 1411 is rotatably connected to a second screw 1413, and a fourth motor 1414 is fixedly connected to the shift frame 1411, and the driving end of the fourth motor 1414 is fixedly connected to the shaft end of the second screw 1413, and the second screw 1413 The upper thread is connected to a push-pull block 1415, and a guide rod 1416 is slidably connected to the end of the push-pull block 1415 away from the second screw 1413. The two ends of the guide rod 1416 are respectively fixedly connected to the side walls of the shift frame 1411; the second screw 1413 is driven to rotate by the fourth motor 1414, and the rotation of the second screw 1413 can drive the push-pull block 1415 to move, and the movement of the push-pull block 1415 can cause the supporting frame 1417 to shift, thereby facilitating the docking of the track.

[0042] like Figure 1 、 Figure 2 、 Figure 7 、 Figure 8 and Figure 9 As shown, as a preferred embodiment, on the basis of the above method, further, the top of the push-pull block 1415 is fixedly connected to a supporting frame 1417, the upper end surface of the supporting frame 1417 is symmetrical and fixedly connected with two second slide rails 1418 that match the slide seat 7 respectively, and the supporting frame 1417 is fixedly connected with a connecting rack 1419, and the outer end of the supporting frame 1417 is fixedly connected to the first limit block 1420 by a hexagon socket bolt; the second slide rail 1418 and the connecting rack 1419 are used to facilitate the movement of the movable plate 3 onto it, so as to facilitate the transmission of the working platform.

[0043] like Figure 2 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, further, the upper end surface of the base plate 1401 is fixedly connected with an assembly block 1421, the assembly block 1421 is fixedly connected with a connecting plate 1422 by bolts, and the end of the connecting plate 1422 away from the assembly block 1421 is fixedly connected to the first track 1 by bolts; the connecting plate 1422 and the assembly block 1421 are used to facilitate the connection between the base plate 1401 and the first track 1 to ensure the stability of the track.

[0044] like Figure 1 and Figure 8As shown, as a preferred embodiment, on the basis of the above method, further, two groups of connecting ears 1423 are symmetrically and fixedly connected on the front and rear side walls of the base plate 1401, and a first threaded column 1424 is provided in the connecting ear 1423. The bottom end of the first threaded column 1424 is fixedly connected to a first supporting foot 1425, and two first nuts 1426 are symmetrically and threadedly connected on the first threaded column 1424; by rotating the first nut 1426, the height of the first supporting foot 1425 can be adjusted, so that the track changing mechanism 14 remains horizontal and stable, and the height of the base plate 1401 can be adjusted conveniently.

[0045] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, a group of supports 15 are fixedly connected at equal intervals on the outer side walls of the first track 1 and the second track 2, and a second threaded column 16 is provided in the support 15. The bottom end of the second threaded column 16 is fixedly connected to a second support foot 17, and two second nuts 18 are symmetrically and threadedly connected on the second threaded column 16; the support height is adjusted, and the height of the second support foot 17 can be adjusted by rotating the second nut 18 to ensure the stability of the track.

[0046] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the outer ends of the first rail 1 and the second rail 2 are fixedly connected with the second limit block 19 by the hexagon socket bolts, and a connecting frame 20 is provided between the first rail 1 and the second rail 2, and the two ends of the connecting frame 20 are fixedly connected to the first rail 1 and the second rail 2 by bolts respectively; the connecting frame 20 can connect the first rail 1 and the second rail 2 to ensure the stability of the rails, and the second limit block 19 prevents the movable plate 3 from sliding off the rails to ensure operation safety.

[0047] Specifically, when the welding robot mobile work platform is in use: first, when the welding robot needs to be moved, the first motor 9 drives the rotating shaft 10 and the transmission gear 11 to rotate, and the rotation of the transmission gear 11 cooperates with the transmission rack 12 to move the movable plate 3, so that the welding robot can perform mobile operations. When the rotating shaft 10 rotates, the first gear 1301 rotates accordingly, and the rotation of the first gear 1301 drives the two second gears 1303 to rotate, thereby rotating the connecting shaft 1302, and the connecting shaft 1302 drives the mounting head 1304 and the cleaning brush 1305 to rotate, and the cleaning brush 1305 rotates. During the rotation process, debris on the rack can be cleaned. When the height of the welding robot needs to be adjusted, the second motor 503 drives the first screw 502. The rotation of the first screw 502 drives the first bevel gear 5011 connected thereto to rotate. The rotation of the first bevel gear 5011 drives the second bevel gear 5014 connected thereto to rotate, thereby rotating the transmission rod 5013 and the other second bevel gear 5014, thereby causing the other first bevel gear 5011 and the first screw 502 to rotate synchronously. The rotation of the first screw 502 causes the moving block 508 to move axially along the first screw 502. The lifting frame 506 is moved, thereby changing the shape of the lifting frame 506. At the same time, the slider 5010 slides synchronously on the slide bar 505, thereby pushing the lifting plate 4 to move up and down, realizing the lifting function of the welding robot body 6. When the welding robot needs to move on the second track 2, the movable plate 3 is moved to the carrying frame 1417, and then the hydraulic cylinder 1402 drives the movable seat 1403 to move outward, thereby causing the carrying frame 1417 and the welding robot above it to move outward to a preset distance, and then the third motor 1410 drives the worm 1409 to rotate, and the rotation of the worm 1409 can drive the worm gear 14 07 and the track-changing shaft 1406 rotate, thereby causing the supporting frame 1417 to rotate ninety degrees and stop, and then the fourth motor 1414 drives the second screw 1413 to rotate, and the rotation of the second screw 1413 can drive the push-pull block 1415 to move, and the movement of the push-pull block 1415 can cause the supporting frame 1417 to shift, thereby causing the second slide rail 1418 and the connecting rack 1419 to dock with the first slide rail 8 and the transmission rack 12 on the second track 2, and then start the first motor 9 to move the movable plate 3 to the second track 2, realizing the shifting operation, which significantly improves the operating range of the welding robot.

[0048] All technical features in this embodiment can be freely combined according to actual needs.

[0049] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A welding robot mobile work platform, comprising a first track (1), characterized in that: A second track (2) is provided on one side of the first track (1), a movable plate (3) is provided on the upper side of the first track (1), a lifting plate (4) is provided on the upper side of the movable plate (3), a lifting mechanism (5) is provided on the lower side of the lifting plate (4), a welding robot body (6) is installed on the upper end surface of the lifting plate (4), two slide seats (7) are symmetrically and fixedly connected to the lower end surface of the movable plate (3), and the upper end surfaces of the first track (1) and the second track (2) are both fixedly connected to a first slide rail (8) matching the slide seat (7). The upper end surface of the movable plate (3) is fixedly connected to a first motor (9), a driving end of the first motor (9) passes through the movable plate (3) and is fixedly connected to a rotating shaft (10), a transmission gear (11) is fixedly connected to the rotating shaft (10), and transmission racks (12) matching the transmission gear (11) are fixedly connected to the inner side walls of the first track (1) and the second track (2), respectively. A cleaning mechanism (13) is provided on the lower side of the movable plate (3), and a track changing mechanism (14) is provided between the first track (1) and the second track (2).

2. A welding robot mobile work platform according to claim 1, characterized in that: The lifting mechanism (5) comprises two groups of fixed blocks (501) which are symmetrical and fixed on the upper end surface of the movable plate (3), and a first screw rod (502) is rotatably connected between each group of fixed blocks (501), and a second motor (503) is fixedly connected to one of the fixed blocks (501) on the inner side, and a driving end of the second motor (503) is fixedly connected to its shaft end close to the first screw rod (502). The lower end surface of the lifting plate (4) is symmetrical and fixedly connected with two groups of connecting heads (504), and a sliding rod (505) is fixedly connected between each group of connecting heads (504). A lifting frame (506) is provided between the first screw rod (502) and the sliding rod (505), and the bottom ends of the lifting frame (506) are rotatably connected to a first fixed seat (507) and a movable block (508), respectively. The bottom of the first fixed seat (507) is fixedly connected to the movable plate (508). The end is fixedly connected to the movable plate (3), the movable block (508) is threadedly connected to the first screw (502), the top ends of the lifting frame (506) are rotatably connected to the second fixed seat (509) and the slider (5010), the top of the second fixed seat (509) is fixedly connected to the lifting plate (4), the slider (5010) is slidably connected to the slide bar (505), the outer end of the first screw (502) passes through the outer fixed block (501) and is fixedly connected to the first bevel gear (5011), the side walls of the outer fixed block (501) are fixedly connected to the connecting blocks (5012), the connecting blocks (5012) are rotatably connected to the transmission rod (5013), and the transmission rod (5013) is fixedly connected to two second bevel gears (5014) respectively meshed with the first bevel gear (5011).

3. The mobile working platform of a welding robot according to claim 1, characterized in that: The cleaning mechanism (13) comprises a first gear (1301) arranged on the upper side of the transmission gear (11), the first gear (1301) being fixedly connected to the rotating shaft (10), two connecting shafts (1302) being symmetrically and rotatably connected to the movable plate (3), the two connecting shafts (1302) being fixedly connected to a second gear (1303) meshing with the first gear (1301), the bottom ends of the connecting shafts (1302) being fixedly connected to a mounting head (1304), a cleaning brush (1305) being sleeved on the mounting head (1304), a nut (1306) being provided on the lower side of the cleaning brush (1305), and the nut (1306) being threadedly connected to the mounting head (1304).

4. The mobile working platform for welding robots according to claim 1, characterized in that: The track-changing mechanism (14) comprises a base plate (1401) arranged between the first track (1) and the second track (2); a hydraulic cylinder (1402) is fixedly connected to the base plate (1401); a driving end of the hydraulic cylinder (1402) is fixedly connected to a moving seat (1403); a guide column (1404) is slidably connected to the side wall of the base plate (1401); an inner end of the guide column (1404) is fixedly connected to the moving seat (1403); a bearing (1405) is fixedly connected to the center of the upper end surface of the moving seat (1403); and the bearing A track-changing shaft (1406) is fixedly connected to the inner side wall of the inner ring of (1405), a worm gear (1407) is fixedly connected to the track-changing shaft (1406), two connecting seats (1408) are fixedly connected to the movable seat (1403), a worm (1409) meshing with the worm gear (1407) is rotatably connected between the two connecting seats (1408), a third motor (1410) is fixedly connected to one of the connecting seats (1408), and a driving end of the third motor (1410) is fixedly connected to the shaft end of the worm gear (1409).

5. The mobile working platform for welding robots according to claim 4, characterized in that: The top end of the track-changing shaft (1406) is fixedly connected to a shift frame (1411), and the lower end of the shift frame (1411) is symmetrically and fixedly connected to two support columns (1412). One end of the shift frame (1411) is rotatably connected to a second screw rod (1413). A fourth motor (1414) is fixedly connected to the shift frame (1411), and the driving end of the fourth motor (1414) is fixedly connected to the shaft end of the second screw rod (1413). A push-pull block (1415) is threadedly connected to the second screw rod (1413). A guide rod (1416) is slidably connected to the inner side of the push-pull block (1415) away from the second screw rod (1413), and the two ends of the guide rod (1416) are respectively fixedly connected to the side walls of the shift frame (1411).

6. The mobile working platform for welding robots according to claim 5, characterized in that: The top of the push-pull block (1415) is fixedly connected to a supporting frame (1417), the upper end of the supporting frame (1417) is symmetrically and fixedly connected to two second slide rails (1418) respectively matching the slide seat (7), the supporting frame (1417) is fixedly connected to a connecting rack (1419), and the outer end of the supporting frame (1417) is fixedly connected to a first limit block (1420) via a hexagon socket bolt.

7. The mobile working platform for welding robots according to claim 4, characterized in that: The upper end surface of the base plate (1401) is fixedly connected to an assembly block (1421), the assembly block (1421) is fixedly connected to a connecting plate (1422) via bolts, and the end of the connecting plate (1422) away from the assembly block (1421) is fixedly connected to the first track (1) via bolts.

8. The mobile working platform for welding robots according to claim 4, characterized in that: Two groups of connecting ears (1423) are symmetrically and fixedly connected on the front and rear side walls of the base plate (1401), and a first threaded column (1424) is provided in each connecting ear (1423). The bottom end of the first threaded column (1424) is fixedly connected to a first supporting foot (1425), and two first nuts (1426) are symmetrically and threadedly connected on the first threaded column (1424).

9. The mobile working platform for welding robots according to claim 1, characterized in that: A group of supports (15) are fixedly connected at equal intervals on the outer side walls of the first track (1) and the second track (2), a second threaded column (16) is provided in the support (15), a second supporting foot (17) is fixedly connected to the bottom end of the second threaded column (16), and two second nuts (18) are symmetrically and threadedly connected on the second threaded column (16).

10. The mobile working platform for welding robots according to claim 1, characterized in that: The outer ends of the first track (1) and the second track (2) are fixedly connected to a second limit block (19) via hexagon socket bolts; a connecting frame (20) is provided between the first track (1) and the second track (2); and the two ends of the connecting frame (20) are fixedly connected to the first track (1) and the second track (2) via bolts, respectively.

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