Ladder type bridge welding device

Abstract

The invention discloses a ladder type bridge frame welding device, which belongs to the field of welding, and comprises a rack, a moving platform, a positioning mechanism, a welding mechanism, a conveying mechanism and a controller, the moving platform moves on the rack, a supporting table is mounted on the moving platform, a ladder side positioning assembly comprises a ladder side clamping rail, a first sliding block is arranged at the bottom end of a first hinge shaft in a scissor fork type telescopic bracket, and a second sliding block is arranged at the bottom end of a second hinge shaft in the scissor fork type telescopic bracket; second sliding blocks are arranged at the bottom ends of the second hinge shafts. The first sliding block and the second sliding block slide in a first sliding groove of the supporting table, and the pneumatic clamping jaw is installed at the top ends of the first hinge shaft and the second hinge shaft. The first lead screw is rotationally connected into the first sliding groove, and one end is connected with the output end of the first motor. The first lead screw is in threaded connection with the first sliding block, and the first lead screw penetrates through the second sliding blocks and is in clearance fit with the second sliding blocks; the welding mechanism is installed in the welding area, and the conveying mechanism is installed in the conveying area. According to the invention, the automatic arrangement of the ladder arms, the gap adjustability and the precise control of the gap of the ladder arms are realized, and the automatic production of the ladder-type bridge is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of welding, and particularly relates to a ladder type bridge welding device. BACKGROUND

[0002] The ladder type bridge is a key structural component for carrying and protecting cables in power engineering, which is welded by two opposite ladder sides and multiple spaced ladder bars between the two ladder sides. The structural strength directly affects the safety and stability of cable laying. The current ladder type bridge welding production has the following core problems: in traditional processing, the relative positions of the crosspieces and the longitudinal beams are placed by manual work, and the crosspiece spacing error can reach ±3-5mm, which leads to uneven stress of the bridge and the risk of crosspiece falling off under long-term load. For example, the patent CN103921023B discloses an automatic welding machine for ladder type cable bridge, which realizes the entire process automation of "ladder side feeding, ladder section feeding, welding positioning, continuous welding, and automatic feeding after welding forming", but the positioning accuracy still needs to be improved.

[0003] The connection of the ladder bar and the ladder side needs to form symmetrical welding points on both sides, and manual welding is prone to miss welding, insufficient weld leg size or excessive weld tumor, which affects the adhesion of the bridge corrosion resistant coating and the structural strength. The existing technology such as CN105081632A discloses an automatic welding machine for ladder type bridge, which improves the welding efficiency to a certain extent, but still has the structural limitation of "the lifting device is installed on the car bottom plate of the transmission device, and the welding device is installed on the sliding plate of the lifting device", which cannot accurately position the ladder bar position.

[0004] A single ladder type bridge needs to weld dozens of crosspieces, and manual single gun welding takes 15-20 minutes, and the welding gun position needs to be adjusted frequently, which is difficult to meet the batch production demand. Although CN222002393U discloses a welding fixing device for ladder type cable bridge, but its fixing method is difficult to adapt to the rapid switching demand of different specifications of ladder type bridge. SUMMARY

[0005] Therefore, the present application provides a ladder type bridge welding device to solve the above problems.

[0006] In order to achieve the above purpose, the present application adopts the following technical solutions: The application discloses a ladder type bridge welding device which comprises a rack, a moving platform, a positioning mechanism, a welding mechanism, a conveying mechanism and a controller, wherein the moving platform moves on the rack, the rack is sequentially provided with a feeding area, a positioning area, a welding area and a conveying area, the positioning mechanism comprises a supporting table, a ladder edge positioning assembly and a ladder bar positioning assembly, the supporting table is fixedly installed on the moving platform, the ladder edge positioning assembly comprises two oppositely arranged ladder edge clamping rails, the ladder bar positioning assembly comprises a scissor type telescopic support, pneumatic clamping claws, a first lead screw and a first motor, the scissor type telescopic support is provided with a first hinged shaft and a plurality of second hinged shafts, the first hinged shaft is provided at the bottom end with a first sliding block, the second hinged shaft is provided at the bottom end with a second sliding block, the supporting table is provided with a first sliding groove, the first sliding block and the second sliding block slide in the first sliding groove, the pneumatic clamping claws are respectively installed at the top ends of the first hinged shaft and the second hinged shaft, the first motor is fixedly installed on the side wall of the supporting table, the first lead screw is rotationally connected at both ends in the first sliding groove, and one end of the first lead screw is fixedly connected with the output end of the first motor; the first lead screw is threadedly connected with the first sliding block, the first lead screw passes through the plurality of second sliding blocks and is in gap cooperation with the second sliding blocks; the welding mechanism is installed in the welding area, the conveying mechanism is installed in the conveying area, and the moving platform, the first motor, the welding mechanism and the conveying mechanism are electrically connected with the controller.

[0007] Further, the ladder edge positioning assembly further comprises a second motor and a first bidirectional threaded lead screw, the moving platform is provided with a second sliding groove, the bottom end of the ladder edge clamping rail is provided with a third sliding block, the third sliding block is slidably connected with the second sliding groove, the first bidirectional threaded lead screw is rotationally connected in the second sliding groove, the second motor is fixedly installed on the side wall of the moving platform, one end of the first bidirectional threaded lead screw is fixedly connected with the output end of the second motor, the third sliding blocks at the bottom ends of the two ladder edge clamping rails are respectively threadedly connected with both ends of the first bidirectional threaded lead screw, and the second motor is electrically connected with the controller.

[0008] Further, a plurality of pneumatic pressing wheel assemblies are arranged at intervals on the two ladder edge clamping rails and used for clamping and fixing the two ladder edges.

[0009] Further, the welding mechanism comprises a welding support, a moving block, a second lead screw, a slide bar, a third motor and a welding assembly, the welding support is fixedly installed at the top end of the rack and located in the welding area; the second lead screw and the slide bar are both rotationally connected to the welding support, the third motor is fixed to the side wall of the welding support, one end of the second lead screw is fixedly connected to the output end of the third motor; the second lead screw and the slide bar both pass through the moving block, the second lead screw is threadedly connected to the moving block, and the slide bar is slidingly connected to the moving block; the welding assembly is installed at the bottom end of the moving block.

[0010] Further, the welding assembly comprises a fourth motor, a second bidirectional threaded lead screw, a fourth sliding block, a first telescopic rod and a welding gun assembly, the fourth sliding block, the first telescopic rod and the welding gun assembly are provided in two, the bottom end of the moving block is provided with a third sliding groove, and the second bidirectional threaded lead screw is rotationally connected in the third sliding groove; the two fourth sliding blocks are threadedly connected to the two ends of the second bidirectional threaded lead screw respectively and are both slidingly connected to the third sliding groove; the fourth motor is installed on the side wall of the moving block, one end of the second bidirectional threaded lead screw is fixedly connected to the output end of the fourth motor; the first telescopic rod is installed at the bottom end of the fourth sliding block, and the welding gun assembly is installed at the bottom end of the first telescopic rod.

[0011] Further, the welding gun assembly comprises a welding gun support, a middle welding gun, two side welding guns and a fifth motor, the welding gun support is fixedly installed at the bottom end of the first telescopic rod, the middle welding gun is installed at the middle of the welding gun support, and the top ends of the two side welding guns are rotationally connected to the two ends of the welding gun support; the two fifth motors are installed on the outer side wall of the welding gun support, and the rotation shafts of the top ends of the side welding guns are fixedly connected to the output ends of the fifth motors.

[0012] Further, the conveying mechanism comprises a conveying support, a fixing block and a clamping hand assembly, the conveying support moves in the conveying area of the rack, and the conveying support is electrically connected to the controller; the fixing block and the clamping hand assembly are both provided in two, the fixing blocks are arranged at intervals on the conveying support, and the clamping hand assemblies are respectively installed in the fixing blocks; The clamping hand assembly comprises a third bidirectional screw rod, two fifth sliding blocks, two second telescopic rods, two pneumatic clamping hands and two sixth motors, the bottom end of the fixed block is provided with a fourth sliding groove, and the third bidirectional screw rod is rotationally connected in the fourth sliding groove; the two fifth sliding blocks are threadedly connected at the two ends of the third bidirectional screw rod and are slidably connected with the fourth sliding groove; the sixth motor is installed on the side wall of the fixed block, one end of the third bidirectional screw rod is fixedly connected with the output end of the sixth motor; the second telescopic rod is installed at the bottom end of the fifth sliding block, and the pneumatic clamping hand is installed at the bottom end of the second telescopic rod.

[0013] Further, the conveying mechanism further comprises a plurality of supporting roller groups, a chain and a seventh motor, the plurality of supporting roller groups are rotationally installed in the rack, the chain is engaged with the chain wheels at one end of the plurality of supporting roller groups, the seventh motor is installed on the side wall of the rack, and the output end of the seventh motor is fixedly connected with one end of the supporting roller groups.

[0014] Further, the centering assembly is further provided, and the centering assembly comprises a first camera, a second camera and a mark point, the first camera and the second camera are respectively installed in the middle part of the inner wall on one side of the welding support and the conveying support, and the mark point is installed in the middle part of the supporting table, close to the side of the first motor

[0015] The present application has the following beneficial effects: The first motor drives the first sliding block to slide in the first sliding groove, thereby driving the scissor-type telescopic support to expand, and moving the pneumatic clamping jaw at the top end of the first hinged shaft on the scissor-type telescopic support to the corresponding position with the ladder carrier, so that the automatic arrangement of the ladder carrier, the adjustable gap of the ladder carrier and the precise control of the gap of the ladder carrier are realized. The second motor and the first bidirectional screw rod drive the movement of the ladder edge clamping rail, thereby realizing the width adjustment of the ladder-type bridge. The welding mechanism, the conveying mechanism, the controller and the centering assembly realize the automatic production of the ladder-type bridge. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0017] Figure 1 It is a schematic view of the three-dimensional structure of the ladder-type bridge. Figure 2 It is a front view of a ladder-type bridge welding device. Figure 3It is a top view of a ladder type bridge welding device; Figure 4 It is Figure 3 A-A sectional view in the figure; Figure 5 It is Figure 4 B-B sectional view in the figure; Figure 6 It is Figure 3 C-C sectional view in the figure; Figure 7 It is Figure 2 D in the figure is a local enlarged view; In the figure: 10-frame, 11-feeding area, 12-positioning area, 13-welding area, 14-conveying area, 15-first guide rail, 16-second guide rail, 20-moving platform, 21-second sliding groove, 31-supporting table, 311-first sliding groove, 321-ladder edge clamping rail, 3211-pneumatic pressure wheel assembly, 322-second motor, 323-first bidirectional threaded screw rod, 331-forked telescopic support, 3311-first hinged shaft, 3312-second hinged shaft, 3313-second sliding block, 332-pneumatic clamping jaw, 333-first screw rod, 334-first motor, 41-welding support, 42-moving block, 421-third sliding groove, 43-second screw rod, 44-sliding rod, 45-third motor, 461-fourth motor, 462-second bidirectional threaded screw rod, 463-fourth sliding block, 464-first telescopic rod, 465-welding gun assembly, 4651-welding gun support, 4652-middle welding gun, 4653-two side edge welding guns, 4654-fifth motor, 51-conveying support, 52-fixed block, 521-fourth sliding groove, 531-third bidirectional threaded screw rod, 532-fifth sliding block, 533-second telescopic rod, 534-pneumatic clamping hand, 535-sixth motor, 54-roller set, 55-seventh motor, 60-controller, 71-first camera, 72-second camera, 73-marking point, 80-ladder edge, 90-ladder. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0019] Referring to the drawings Figures 1-7The application provides a ladder type bridge welding device, which comprises a rack 10, a moving platform 20, a positioning mechanism, a welding mechanism, a conveying mechanism and a controller 60. The rack 10 is provided with a first guide rail 15. The moving platform 20 moves on the first guide rail 15 of the rack 10. The moving platform 20 is provided with a driving device. The driving device is a prior art and is not shown in the figure. The rack 10 is sequentially provided with a feeding area 11, a positioning area 12, a welding area 13 and a conveying area 14. The positioning mechanism comprises a support table 31, a ladder edge positioning assembly and a ladder bar positioning assembly. The support table 31 is fixedly installed on the moving platform 20. The ladder edge positioning assembly comprises two oppositely arranged ladder edge clamping rails 321. The ladder bar positioning assembly comprises a scissor type telescopic support 331, a pneumatic clamping jaw 332, a first lead screw 333 and a first motor 334. The scissor type telescopic support 331 is provided with a first hinged shaft 3311 and a plurality of second hinged shafts 3312. The bottom end of the first hinged shaft 3311 is provided with a first sliding block. The bottom end of the second hinged shaft 3312 is provided with a second sliding block 3313. The support table 31 is provided with a first sliding groove 311. The first sliding block and the second sliding block 3313 slide in the first sliding groove 311. The plurality of pneumatic clamping jaws 332 are respectively installed at the top ends of the first hinged shaft 3311 and the second hinged shaft 3312. The first motor 334 is fixedly installed on the side wall of the support table 31. The first lead screw 333 is rotatably connected at both ends in the first sliding groove 311. One end of the first lead screw 333 is fixedly connected with the output end of the first motor 334. The first lead screw 333 is threadedly connected with the first sliding block. The first lead screw 333 passes through the plurality of second sliding blocks 3313 and is gap-connected with the second sliding blocks 3313. The welding mechanism is installed in the welding area 13. The conveying mechanism is installed in the conveying area 14. The moving platform 20, the first motor 334, the welding mechanism and the conveying mechanism are electrically connected with the controller 60. The first motor 334 drives the first sliding block to slide in the first sliding groove 311, thereby driving the scissor type telescopic support 331 to unfold and moving the pneumatic clamping jaw 332 at the top end of the first hinged shaft 3311 of the scissor type telescopic support 331 with the ladder bar 90 to a corresponding position, so that the automatic arrangement of the ladder bar 90 is realized. The gap of the ladder bar 90 is adjustable and accurately controlled.

[0020] The ladder edge positioning assembly further comprises a second motor 322 and a first bidirectional threaded lead screw 323. The moving platform 20 is provided with a second sliding groove 21. The bottom end of the ladder edge clamping rail 321 is provided with a third sliding block. The third sliding block is slidably connected with the second sliding groove 21. The first bidirectional threaded lead screw 323 is rotatably connected in the second sliding groove 21. The second motor 322 is fixedly installed on the side wall of the moving platform 20. One end of the first bidirectional threaded lead screw 323 is fixedly connected with the output end of the second motor 322. The third sliding blocks at the bottom ends of the two ladder edge clamping rails 321 are respectively threadedly connected with the two ends of the first bidirectional threaded lead screw 323. The second motor 322 is electrically connected with the controller 60.

[0021] A plurality of pneumatic pressing wheel assemblies 3211 are arranged on the two track clamps 321 at intervals, and are used to clamp and fix the two ladder sides 80.

[0022] The welding mechanism comprises a welding support 41, a moving block 42, a second lead screw 43, a sliding rod 44, a third motor 45 and a welding assembly. The welding support 41 is fixedly installed at the top end of the rack 10 and located in the welding area 13. The second lead screw 43 and the sliding rod 44 are both rotationally connected to the welding support 41. The third motor 45 is fixed to the side wall of the welding support 41. One end of the second lead screw 43 is fixedly connected to the output end of the third motor 45. The second lead screw 43 and the sliding rod 44 both pass through the moving block 42. The second lead screw 43 is threadedly connected to the moving block 42. The sliding rod 44 is slidingly connected to the moving block 42. The welding assembly is installed at the bottom end of the moving block 42.

[0023] The welding assembly comprises a fourth motor 461, a second bidirectional threaded lead screw 462, a fourth sliding block 463, a first telescopic rod 464 and a welding gun assembly 465. The fourth sliding block 463, the first telescopic rod 464 and the welding gun assembly 465 are provided in two sets. The bottom end of the moving block 42 is provided with a third sliding groove 421. The second bidirectional threaded lead screw 462 is rotationally connected in the third sliding groove 421. The two fourth sliding blocks 463 are threadedly connected to the two ends of the second bidirectional threaded lead screw 462 respectively and are both slidingly connected to the third sliding groove 421. The fourth motor 461 is installed on the side wall of the moving block 42. One end of the second bidirectional threaded lead screw 462 is fixedly connected to the output end of the fourth motor 461. The first telescopic rod 464 is installed at the bottom end of the fourth sliding block 463. The welding gun assembly 465 is installed at the bottom end of the first telescopic rod 464.

[0024] The welding gun assembly 465 comprises a welding gun support 4651, a middle welding gun 4652, two side welding guns 4653 and a fifth motor 4654. The welding gun support 4651 is fixedly installed at the bottom end of the first telescopic rod 464. The middle welding gun 4652 is installed at the middle part of the welding gun support 4651. The top ends of the two side welding guns 4653 are rotationally connected to the two ends of the welding gun support 4651. The two fifth motors 4654 are installed on the outer side wall of the welding gun support 4651. The rotation shafts of the top ends of the side welding guns 4653 are fixedly connected to the output ends of the fifth motors 4654.

[0025] The conveying mechanism comprises a conveying support 51, a fixed block 52 and a clamping hand assembly. The rack 10 is provided with a second guide rail 16. The conveying support 51 is provided with a driving motor. The driving motor is electrically connected to the controller 60. The conveying support 51 moves on the second guide rail 16, thereby realizing the movement of the conveying support 51 on the conveying area 14 of the rack 10. The conveying support 51 is electrically connected to the controller 60. The fixed block 52 and the clamping hand assembly are both provided in two sets. The fixed blocks 52 are arranged at intervals on the conveying support 51. The clamping hand assemblies are respectively installed in the fixed blocks 52. The clamping hand assembly comprises a third bidirectional screw rod 531, two fifth sliding blocks 532, two second telescopic rods 533, two pneumatic clamping hands 534 and two sixth motors 535. The bottom end of the fixed block 52 is provided with a fourth sliding groove 521, and the third bidirectional screw rod 531 is rotationally connected in the fourth sliding groove 521. The two fifth sliding blocks 532 are respectively threadedly connected at the two ends of the third bidirectional screw rod 531 and are in sliding connection with the fourth sliding groove 521. The sixth motor 535 is installed on the side wall of the fixed block 52, and one end of the third bidirectional screw rod 531 is fixedly connected with the output end of the sixth motor 535. The second telescopic rod 533 is installed at the bottom end of the fifth sliding block 532, and the pneumatic clamping hand 534 is installed at the bottom end of the second telescopic rod 533.

[0026] The conveying mechanism further comprises a plurality of supporting roller groups 54, a chain and a seventh motor 55. The plurality of supporting roller groups 54 are rotationally installed in the rack 10. The chain is in engagement with the chain wheels at one end of the plurality of supporting roller groups 54. The seventh motor 55 is installed on the side wall of the rack 10, and the output end of the seventh motor 55 is fixedly connected with one end of the supporting roller group 54.

[0027] The ladder type bridge welding device further comprises a centering assembly. The centering assembly comprises a first camera 71, a second camera 72 and a marker point 73. The first camera 71 and the second camera 72 are respectively installed in the middle part of the inner wall on one side of the welding support 41 and the conveying support 51. The marker point 73 is installed in the middle part of the support table 31, close to the side of the first motor 334.

[0028] Working principle: The gap of the ladder 90 is set on the controller 60. Initially, the moving platform 20 is located in the feeding area 11 of the rack 10. At this time, the scissor type telescopic support 331 is in the contracted state, and the two ladder edges 80 are respectively placed into the two ladder edge clamping rails 321.

[0029] The moving platform 20 moves to the positioning area 12 through the first guide rail 15, the pneumatic pressure roller assembly 3211 fixes the ladder edge 80, and the plurality of ladders 90 are respectively placed into the pneumatic clamping jaws 332 for fixation. The first motor 334 drives the first sliding block to slide in the first sliding groove 311, thereby driving the scissor type telescopic support 331 to expand and enabling the pneumatic clamping jaws 332 at the top end of the first hinged shaft 3311 on the scissor type telescopic support 331 to move to the set gap position with the ladder 90. Then, the second motor 322 controls the rotation of the first bidirectional screw rod 323, so that the two ladder edge clamping rails 321 move towards each other and the inner walls of the two ladder edges 80 abut against the two ends of the ladder 90. The mobile platform 20 continues to move to the welding area 13, and when the first camera 71 captures the mark point 73 on the support table 31, the mobile platform 20 stops moving; the third motor 45 drives the second screw rod 43 to rotate, thereby realizing the movement of the moving block 42, and starting to prepare for welding from one end of the ladder edge 80; then, the fourth motor 461 drives the second bidirectional screw rod 462 to rotate, and the welding gun assembly 465 moves in the opposite direction, and then the first telescopic rod 464 is elongated, so that the middle welding gun 4652 welds the welding points between the top of the ladder support 90 and the inner wall of the ladder edge 80, and the two side welding guns 4653 weld the welding points between the two side walls of the ladder edge 80 and the inner wall of the ladder edge 80, and in the process, the fifth motor 4654 can be used to adjust the angle of the side welding gun 4653, thereby realizing the simultaneous welding of the two ends of the ladder support 90; then the third motor 45 drives the moving block 42 to move until the welding of the two ends of all the ladder supports 90 is completed. The mobile platform 20 continues to move to the conveying area 14, and when the second camera 72 captures the mark point 73 on the support table 31, the mobile platform 20 stops moving; the two clamping hand assemblies on the fixed block 52 move synchronously, the third bidirectional screw rod 531 is driven to rotate by the sixth motor 535, thereby moving the two pneumatic clamping hands 534 in opposite or opposite directions, so that the pneumatic clamping hand 534 is located directly above the ladder edge 80, the second telescopic rod 533 is elongated, and the pneumatic clamping hand 534 is lowered to clamp the two ladder edges 80, then the second telescopic rod 533 is elongated, the welded ladder type bridge is lifted, and the mobile platform 20 returns to the feeding area 11 for the next operation; the conveying support 51 moves the ladder type bridge to the upper side of the roller set 54, the second telescopic rod 533 is elongated, the ladder type bridge is placed on the roller set 54, and the seventh motor 55 drives the roller set 54 to rotate, thereby realizing the transfer of the ladder type bridge.

[0030] The above is only a specific embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, some modifications and improvements can be made, which should be regarded as the protection scope of the present application, and these will not affect the effect and practicability of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the description can be used to explain the content of the claims.

[0031] In the present application, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, it is described simply, and the related parts are referred to the method part.

[0032] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ladder-type cable tray welding device, characterized in that, include: The system comprises a frame (10), a moving platform (20), a positioning mechanism, a welding mechanism, a conveying mechanism, and a controller (60). The moving platform (20) moves on the frame (10). The frame (10) is sequentially provided with a feeding area (11), a positioning area (12), a welding area (13), and a conveying area (14). The positioning mechanism includes a support platform (31), a ladder edge positioning component, and a ladder support positioning component. The support platform (31) is fixedly installed on the moving platform (20). The ladder edge positioning component includes... The ladder support positioning assembly includes two opposing ladder side rails (321), a scissor-type telescopic bracket (331), a pneumatic gripper (332), a first lead screw (333), and a first motor (334). The scissor-type telescopic bracket (331) is provided with a first hinge shaft (3311) and multiple second hinge shafts (3312). The bottom end of the first hinge shaft (3311) is provided with a first slider, and the bottom end of the second hinge shafts (3312) is provided with a second slider (3313). The support platform (3... 1) A first slide groove (311) is provided on the platform. The first slider and the second slider (3313) slide in the first slide groove (311). Multiple pneumatic grippers (332) are respectively installed on the top ends of the first hinge shaft (3311) and the second hinge shaft (3312). The first motor (334) is fixedly installed on the side wall of the support platform (31). The two ends of the first lead screw (333) are rotatably connected in the first slide groove (311). One end of the first lead screw (333) is fixedly connected to the output end of the first motor (334). The first lead screw (333) is threadedly connected to the first slider. The first lead screw (333) passes through multiple second sliders (3313) and is clearance-fitted with the second sliders (3313). The welding mechanism is installed in the welding area (13). The conveying mechanism is installed in the conveying area (14). The moving platform (20), the first motor (334), the welding mechanism and the conveying mechanism are all electrically connected to the controller (60).

2. The ladder-type cable tray welding device according to claim 1, characterized in that, The ladder edge positioning assembly also includes a second motor (322) and a first bidirectional threaded screw (323). The moving platform (20) is provided with a second slide groove (21). The bottom end of the ladder edge clamping rail (321) is provided with a third slider. The third slider is slidably connected to the second slide groove (21). The first bidirectional threaded screw (323) is rotatably connected in the second slide groove (21). The second motor (322) is fixedly installed on the side wall of the moving platform (20). One end of the first bidirectional threaded screw (323) is fixedly connected to the output end of the second motor (322). The third sliders at the bottom ends of the two ladder edge clamping rails (321) are respectively threaded to both ends of the first bidirectional threaded screw (323). The second motor (322) is electrically connected to the controller (60).

3. The ladder-type cable tray welding device according to claim 1, characterized in that, Multiple pneumatic roller assemblies (3211) are spaced apart on both of the two ladder-side clamping rails (321) for clamping and fixing the two ladder sides (80).

4. The ladder-type cable tray welding device according to claim 1, characterized in that, The welding mechanism includes a welding bracket (41), a moving block (42), a second lead screw (43), a slide rod (44), a third motor (45), and a welding assembly. The welding bracket (41) is fixedly installed at the top of the frame (10) and located in the welding area (13). The second lead screw (43) and the slide rod (44) are rotatably connected to the welding bracket (41). The third motor (45) is fixed on the side wall of the welding bracket (41). One end of the second lead screw (43) is fixedly connected to the output end of the third motor (45). The second lead screw (43) and the slide rod (44) both pass through the moving block (42). The second lead screw (43) is threadedly connected to the moving block (42), and the slide rod (44) is slidably connected to the moving block (42). The welding assembly is installed at the bottom of the moving block (42).

5. The ladder-type cable tray welding device according to claim 4, characterized in that, The welding assembly includes a fourth motor (461), a second bidirectional threaded screw (462), a fourth slider (463), a first telescopic rod (464), and a welding torch assembly (465). Two fourth sliders (463), one first telescopic rod (464), and one welding torch assembly (465) are configured. A third groove (421) is provided at the bottom end of the moving block (42). The second bidirectional threaded screw (462) is rotatably connected in the third groove (421). Two fourth sliders (463) are threaded to both ends of the second bidirectional threaded screw (462) and are slidably connected to the third groove (421). The fourth motor (461) is mounted on the side wall of the moving block (42), and one end of the second bidirectional threaded screw (462) is fixedly connected to the output end of the fourth motor (461). The first telescopic rod (464) is mounted at the bottom end of the fourth slider (463), and the welding torch assembly (465) is mounted at the bottom end of the first telescopic rod (464).

6. The ladder-type cable tray welding device according to claim 5, characterized in that, The welding torch assembly (465) includes a welding torch bracket (4651), a central welding torch (4652), two side welding torches (4653), and a fifth motor (4654). The welding torch bracket (4651) is fixedly installed at the bottom end of the first telescopic rod (464). The central welding torch (4652) is installed in the middle of the welding torch bracket (4651). The top ends of the two side welding torches (4653) are rotatably connected to both ends of the welding torch bracket (4651). The two fifth motors (4654) are installed on the outer side wall of the welding torch bracket (4651). The rotating shaft at the top end of the side welding torches (4653) is fixedly connected to the output end of the fifth motor (4654).

7. The ladder-type cable tray welding device according to claim 4, characterized in that, The conveying mechanism includes a conveying bracket (51), a fixing block (52), and a gripper assembly. The conveying bracket (51) moves in the conveying area (14) of the frame (10), and the conveying bracket (51) is electrically connected to the controller (60). There are two fixing blocks (52) and two gripper assemblies. The fixing blocks (52) are spaced apart on the conveying bracket (51), and the gripper assemblies are respectively installed in the fixing blocks (52). The gripper assembly includes a third bidirectional threaded screw (531), two fifth sliders (532), two second telescopic rods (533), two pneumatic grippers (534), and two sixth motors (535). The bottom end of the fixed block (52) is provided with a fourth slide groove (521), and the third bidirectional threaded screw (531) is rotatably connected in the fourth slide groove (521). The two fifth sliders (532) are respectively threaded to both ends of the third bidirectional threaded screw (531) and are slidably connected to the fourth slide groove (521). The sixth motors (535) are installed on the side wall of the fixed block (52), and one end of the third bidirectional threaded screw (531) is fixedly connected to the output end of the sixth motor (535). The second telescopic rods (533) are installed at the bottom end of the fifth sliders (532), and the pneumatic grippers (534) are installed at the bottom end of the second telescopic rods (533).

8. The ladder-type cable tray welding device according to claim 7, characterized in that, The conveying mechanism also includes multiple idler roller groups (54), a chain and a seventh motor (55). The multiple idler roller groups (54) are rotatably mounted in the frame (10). The chain meshes with the sprocket at one end of the multiple idler roller groups (54). The seventh motor (55) is mounted on the side wall of the frame (10). The output end of the seventh motor (55) is fixedly connected to one end of the idler roller group (54).

9. A ladder-type cable tray welding device according to claim 7, characterized in that, It also includes a centering component, which includes a first camera (71), a second camera (72) and a marker point (73). The first camera (71) and the second camera (72) are respectively installed in the middle of the inner wall of one side of the welding bracket (41) and the conveying bracket (51). The marker point (73) is installed in the middle of the support platform (31), near the side of the first motor (334).

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