An automatic assembly and welding line for the boom of an aerial platform

Abstract

The application discloses a kind of automatic assembly welding line of climbing vehicle boom, including feeding roller line, automatic assembly platform, feeding truss, feeding boom, spot welding robot and automatic welding platform, feeding roller line is located in the side of automatic assembly platform, spot welding robot is located in the other side of automatic assembly platform, feeding truss is straddled in the top of feeding roller line, automatic assembly platform, spot welding robot, feeding boom is movably arranged on feeding truss, automatic welding platform is located in the discharging end of automatic assembly platform, the bottom plate, side plate and cover plate of climbing vehicle boom are fed to the side of automatic assembly platform by feeding roller line, are carried to automatic assembly platform by feeding boom, and the pre-assembly of climbing vehicle boom is completed with spot welding robot, after pre-assembly is completed, is discharged from the head of automatic assembly platform to automatic welding platform, and the welding of climbing vehicle boom is completed.The present application can realize automatic feeding, positioning, assembly, greatly reduce labor cost, improve production efficiency, and positioning is accurate.

Description

Technical Field

[0001] This invention relates to the field of aerial work platform boom assembly technology, and more specifically to an automated assembly and welding line for aerial work platform booms. Background Technology

[0002] The existing assembly process for aerial work platform booms involves first manually hoisting the base plate, left side plate, right side plate, and cover plate separately, then assembling them using a positioning core as a standard, followed by manual measurement for positioning, and finally, manual welding for assembly. This assembly process is labor-intensive, costly, inefficient, and the manual positioning method is not precise enough. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automatic assembly and welding line for aerial work platform booms.

[0004] The technical solution of the present invention is as follows:

[0005] An automated assembly and welding line for a mobile aerial work platform boom includes a loading roller conveyor, an automated assembly platform, a loading truss, a loading boom, a spot welding robot, and an automated welding platform. The loading roller conveyor is located on one side of the automated assembly platform, and the spot welding robot is located on the other side. The loading truss spans above the loading roller conveyor, the automated assembly platform, and the spot welding robot. The loading boom is movably mounted on the loading truss. The automated welding platform is located at the unloading end of the automated assembly platform. The base plate, side plates, and cover plates that make up the mobile aerial work platform boom are loaded onto one side of the automated assembly platform via the loading roller conveyor and transported to the automated assembly platform by the loading boom to complete the pre-assembly of the mobile aerial work platform boom with the spot welding robot. After the pre-assembly is completed, the components are unloaded from the head of the automated assembly platform to the automated welding platform to complete the welding of the mobile aerial work platform boom.

[0006] Furthermore, the automatic assembly platform includes a first base, a first conveying roller mechanism, a first centering and positioning mechanism, a positioning core, a pin positioning mechanism, a side plate positioning mechanism, a tailstock clamping mechanism, and a headstock rolling mechanism. Several of the first conveying roller mechanism, the first centering and positioning mechanism, and the side plate positioning mechanism are provided. Two pin positioning mechanisms are provided. A boom assembly station for the aerial work platform is provided on the first base. The several first conveying roller mechanisms and the first centering and positioning mechanisms are evenly arranged in a straight line on the boom assembly station. The boom base plate is fed by a loading boom and positioned by the several first centering and positioning mechanisms. The positioning core is adapted to the inner cavity of the boom. The two pin positioning mechanisms are positioned opposite each other on both sides of the head of the boom assembly station. The several side plate positioning mechanisms are evenly arranged on both sides of the middle and tail of the boom assembly station. The boom side plates are fed to the pins by a loading boom. The positioning mechanism and side plate positioning mechanism are further used to place the boom side plates of the aerial work platform onto both sides of the boom base plate of the aerial work platform through the pin positioning mechanism and the side plate positioning mechanism, and to position them in conjunction with the positioning core. After the boom side plates and the boom base plate of the aerial work platform are positioned, the boom cover plate is loaded onto the top of the two boom side plates by the loading boom and positioned by the positioning protrusion at one end of the boom and the positioning core at the other end. The two sides of the first base are along the length of the boom of the aerial work platform. A movable rack is provided in the degree direction. The head frame rolling mechanism and the tail frame tightening mechanism are movably arranged on the movable rack. After the boom cover plate, boom side plate and boom base plate of the aerial work platform are positioned, one end is tightened by the tail frame tightening mechanism and the other end is pressed by the head frame rolling mechanism. The head frame rolling mechanism can follow and cooperate with the spot welding robot to complete the spot welding work of the aerial work platform boom. After the spot welding work is completed, the aerial work platform boom is lifted and unloaded by several first conveying roller mechanisms.

[0007] Furthermore, the first conveying roller mechanism includes a roller and a lifting motor, wherein the motor shaft of the lifting motor faces upward and is connected to the roller.

[0008] Furthermore, the first centering and positioning mechanism includes a bracket, a top plate, a centering execution cylinder, a centering transmission assembly, a first centering positioning block, and a second centering positioning block. The top plate is mounted on the bracket, and the top plate has a first movable slot and a second movable slot facing each other on the left and right sides along the width direction of the aerial work platform boom. The centering execution cylinder and the centering transmission assembly are mounted inside the bracket, and the centering execution cylinder is connected to the centering transmission assembly in a transmission manner. The first centering positioning block and the second centering positioning block are movably mounted on the centering transmission assembly on the left and right sides, with the top of the first centering positioning block extending out from the first movable slot and the top of the second centering positioning block extending out from the second movable slot.

[0009] Furthermore, the pin positioning mechanism includes a first left-right moving module, a first flipping module, a first flipping transmission assembly, a first lifting module, a first positioning plate, a first electromagnetic chuck, and a positioning pin. The first flipping module and the first flipping transmission assembly are movably mounted on the first left-right moving module. The first flipping module is connected to the first flipping transmission assembly. The first lifting module is rotatably mounted on the first flipping transmission assembly. The first positioning plate is movably mounted on the first lifting module. The first electromagnetic chuck and the positioning pin are mounted on the first positioning plate. Several first electromagnetic chucks are evenly distributed.

[0010] Furthermore, the side panel positioning mechanism includes a second left-right moving module, a second flipping module, a second flipping transmission assembly, a second lifting module, a second positioning plate, and a second electromagnetic chuck. The second flipping module and the second flipping transmission assembly are movably mounted on the second left-right moving module. The second flipping module is connected to the second flipping transmission assembly. The second lifting module is rotatably mounted on the second flipping transmission assembly. The second positioning plate is movably mounted on the second lifting module. The second electromagnetic chuck is evenly mounted on the second positioning plate.

[0011] Furthermore, the tailstock clamping mechanism includes a tailstock, a first tailstock moving motor, a second tailstock moving motor, a third left-right moving module, a fourth left-right moving module, a first top pressure plate, and a second top pressure plate. The first and second tailstock moving motors are arranged opposite each other on the tailstock, driving the tailstock to move along the movable racks on both sides. The third and fourth left-right moving modules are arranged opposite each other on the front side of the tailstock. The first top pressure plate is movably mounted on the third left-right moving module, and the second top pressure plate is movably mounted on the fourth left-right moving module.

[0012] Furthermore, the headframe rolling mechanism includes a headframe, a first headframe moving motor, a second headframe moving motor, a left side plate rolling module, a right side plate rolling module, and a cover plate rolling module. The first headframe moving motor and the second headframe moving motor are arranged opposite each other on the headframe, driving the headframe to move along the movable racks on both sides. The left side plate rolling module and the right side plate rolling module are arranged opposite each other on the headframe and located on both sides of the aerial work platform boom assembly station. The cover plate rolling module is arranged on the headframe and located above the aerial work platform boom assembly station.

[0013] Furthermore, the automatic welding platform includes a second base, a second conveying roller mechanism, a support platform, a second centering and positioning mechanism, and a welding follow-up mechanism. Several second conveying roller mechanisms and support platforms are provided, and two second centering and positioning mechanisms are provided. The several second conveying roller mechanisms and support platforms are arranged evenly in a straight line on the second base. The two second centering and positioning mechanisms are spaced apart on the second base and located at the loading end of the automatic welding platform. The welding follow-up mechanism is movably positioned above the second conveying roller mechanism, support platform, and second centering and positioning mechanism via a bottom conveying guide rail. The aerial work platform boom is unloaded from the automatic assembly platform onto the automatic welding platform, positioned by the two second centering and positioning mechanisms, and conveyed into place by the several second conveying roller mechanisms. The support platform provides support for the aerial work platform boom. The welding follow-up mechanism automatically welds the aerial work platform boom after it has been conveyed into place.

[0014] Furthermore, the welding follow-up mechanism includes a gantry frame, a third lifting module, a fourth lifting module, a first upper welding follow-up component, a second upper welding follow-up component, a first lower welding follow-up component, and a second lower welding follow-up component. The third and fourth lifting modules are arranged opposite each other on the gantry frame. The first upper welding follow-up component and the first lower welding follow-up component are movably arranged vertically on the third lifting module. The second upper welding follow-up component and the second lower welding follow-up component are movably arranged vertically on the fourth lifting module. The first upper welding follow-up component, the first lower welding follow-up component, the second upper welding follow-up component, and the second lower welding follow-up component form a boom welding station for the aerial work platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can realize automatic feeding, positioning and assembly, greatly reduce labor costs, improve production efficiency, and its positioning is accurate and the production quality is high. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A plan view of an automated assembly and welding line for a climbing vehicle boom provided by the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the automated assembly platform described in this invention;

[0019] Figure 3This is a schematic diagram of the structure of the first conveying roller mechanism of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the first centering and positioning mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the pin positioning mechanism described in this invention;

[0022] Figure 6 This is a schematic diagram of the side plate positioning mechanism described in this invention;

[0023] Figure 7 This is a schematic diagram of the tailstock clamping mechanism described in this invention;

[0024] Figure 8 This is a schematic diagram of the headstock rolling mechanism described in this invention;

[0025] Figure 9 This is a schematic diagram of the structure of the automatic welding platform described in this invention;

[0026] Figure 10 This is a schematic diagram of the welding follower mechanism described in this invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] To illustrate the technical solution described in this invention, specific embodiments are described below.

[0029] Example

[0030] Please see Figure 1 This embodiment provides an automatic assembly and welding line for a mobile aerial work platform boom, including a loading roller line 1, an automatic assembly platform 2, a loading truss 3, a loading boom 4, a spot welding robot 5, and an automatic welding platform 6. The loading roller line 1 is located on one side of the automatic assembly platform 2, and the spot welding robot 5 is located on the other side of the automatic assembly platform 6. The loading truss 3 spans above the loading roller line 1, the automatic assembly platform 2, and the spot welding robot 5. The loading boom 4 is movably mounted on the loading truss 3. The automatic welding platform 6 is located at the unloading end of the automatic assembly platform 2. The bottom plate, side plate, and cover plate that make up the mobile aerial work platform boom are loaded onto one side of the automatic assembly platform 2 via the loading roller line, transported to the automatic assembly platform 2 by the loading boom 4, and pre-assembled with the spot welding robot 5. After pre-assembly, the components are unloaded from the head of the automatic assembly platform 2 to the automatic welding platform 6 to complete the welding of the mobile aerial work platform boom.

[0031] like Figure 2 As shown, the automatic assembly platform 2 includes a first base 21, a first conveying roller mechanism 22, a first centering and positioning mechanism 23, a positioning core 24, a pin positioning mechanism 25, a side plate positioning mechanism 26, a tailstock tightening mechanism 27, and a headstock rolling mechanism 28. Several units of the first conveying roller mechanism 22, the first centering and positioning mechanism 23, and the side plate positioning mechanism 26 are provided, and two pin positioning mechanisms 25 are provided. The first base 21 is equipped with a boom assembly station for the aerial work platform. Several first conveying roller mechanisms 22 and first centering and positioning mechanisms 23 are evenly arranged in a straight line on the platform. At the boom assembly station, the boom base plate of the aerial work platform is fed by the loading boom 4 and positioned by several first centering and positioning mechanisms 23. The positioning core 24 is adapted to the inner cavity of the boom. Two pin positioning mechanisms 25 are set opposite to each other on both sides of the head of the boom assembly station. Several side plate positioning mechanisms 26 are evenly set on both sides of the middle and tail of the boom assembly station. Movable racks 29 are provided on both sides of the first base 21 along the length of the boom. The head frame rolling mechanism 28 and the tail frame tightening mechanism 27 are movably set on the movable racks 29.

[0032] Among them, such as Figure 3 As shown, the first conveying roller mechanism 22 includes a roller 221 and a lifting motor 222. The motor shaft of the lifting motor 222 faces upward and is connected to the roller 221. The roller 221 is used for loading the bottom plate and unloading the boom of the aerial work platform. The lifting motor 222 raises the roller 221 when unloading to facilitate unloading.

[0033] Among them, such as Figure 4 As shown, the first centering and positioning mechanism 23 includes a bracket 231, a top plate 232, a centering execution cylinder 233, a centering transmission assembly 234, a first centering positioning block 235, and a second centering positioning block 236. The top plate 232 is mounted on the bracket 231. The top plate 232 has a first movable slot 2321 and a second movable slot 2322 facing each other on the left and right sides along the width direction of the aerial work platform boom. The centering execution cylinder 233 and the centering transmission assembly 234 are located inside the bracket 231. The centering execution cylinder 233 and the centering transmission assembly 234 are connected to each other. 34. The first centering positioning block 235 and the second centering positioning block 236 are movably arranged on the centering transmission assembly 234 with the left and right sides opposite each other. The top of the first centering positioning block 235 extends out from the first movable slot 2321, and the top of the second centering positioning block 236 extends out from the second movable slot 2322. The centering execution cylinder 233 can drive the first centering positioning block 235 and the second centering positioning block 236 to move relative to each other through the centering transmission assembly 234 to complete the positioning of the base plate or to move in opposite directions to release the boom of the climbing vehicle during unloading.

[0034] Among them, such as Figure 5As shown, the pin positioning mechanism 25 includes a first left-right moving module 251, a first flipping module 252, a first flipping transmission assembly 253, a first lifting module 254, a first positioning plate 255, a first electromagnetic chuck 256, and a positioning pin 257. The first flipping module 252 and the first flipping transmission assembly 253 are movably mounted on the first left-right moving module 251. The first flipping module 252 is connected to the first flipping transmission assembly 253. The first lifting module 254 is rotatably mounted on the first flipping transmission assembly 253. The first positioning plate 255 is movably mounted on the first lifting module 254. An electromagnetic chuck 256 and a positioning pin 257 are set on a first positioning plate 255. Several electromagnetic chucks 256 are evenly arranged. The first positioning plate 255 is used to position the side plate. The side plate can be attracted and fixed by several electromagnetic chucks 256. The positioning pin 257 has a positioning function when the side plate is being loaded. During positioning, the first flipping module 252 drives the side plate to rotate towards the bottom plate of the aerial work platform, so that the side plate is perpendicular to the bottom plate of the aerial work platform. Under the action of the first left and right moving module 251 and the first lifting module 254, the positioning core is used to position the connection between the side plate and the bottom plate.

[0035] Among them, such as Figure 6 As shown, the side panel positioning mechanism 26 includes a second left-right moving module 261, a second flipping module 262, a second flipping transmission assembly 263, a second lifting module 264, a second positioning plate 265, and a second electromagnetic chuck 266. The second flipping module 262 and the second flipping transmission assembly 263 are movably mounted on the second left-right moving module 261. The second flipping module 262 is connected to the second flipping transmission assembly 263. The second lifting module 264 is rotatably mounted on the second flipping transmission assembly 263. The second positioning plate 265... 5. The movable part is set on the second lifting module 264, and the second electromagnetic chuck 266 is evenly set on the second positioning plate 265. The second positioning plate 265 is used to position the side plate, and the side plate can be attracted and fixed by several second electromagnetic chucks 266. During positioning, the second flipping module 262 drives the side plate to rotate towards the bottom plate of the aerial work platform, so that the side plate is perpendicular to the bottom plate of the aerial work platform. Under the action of the second left and right moving module 261 and the second lifting module 264, the side plate is positioned at the connection between the side plate and the bottom plate in conjunction with the positioning core.

[0036] Among them, such as Figure 7As shown, the tailstock clamping mechanism 27 includes a tailstock 271, a first tailstock moving motor 272, a second tailstock moving motor 273, a third left-right moving module 274, a fourth left-right moving module 275, a first top pressure plate 276, and a second top pressure plate 277. The first tailstock moving motor 272 and the second tailstock moving motor 273 are arranged left-right opposite each other on the tailstock 271. The third left-right moving module 274 and the fourth left-right moving module 275 are arranged left-right opposite each other on the front side of the tailstock 271. The first top pressure plate 276 is movably mounted on... On the third left-right moving module 274, the second top pressure plate 277 is movably mounted on the fourth left-right moving module 275. The tail frame 271 is driven to move along the movable racks 29 on both sides by the first tail frame moving motor 272 and the second tail frame moving motor 273. The third left-right moving module 274 and the fourth left-right moving module 275 can respectively drive the first top pressure plate 276 and the second top pressure plate 277 to move left and right. The first top pressure plate 276 and the second top pressure plate 277 press down on one end of the aerial work platform boom during welding.

[0037] Among them, such as Figure 8 As shown, the headframe rolling mechanism 28 includes a headframe 281, a first headframe moving motor 282, a second headframe moving motor 283, a left side plate rolling module 284, a right side plate rolling module 285, and a cover plate rolling module 286. The first headframe moving motor 282 and the second headframe moving motor 283 are arranged opposite each other on the headframe 281. The left side plate rolling module 284 and the right side plate rolling module 285 are arranged opposite each other on the headframe 281 and located on both sides of the aerial work platform boom assembly station. The rolling module 286 is mounted on the head frame 281 and located above the boom assembly station of the aerial work platform. The head frame 281 is driven to move along the movable racks 29 on both sides by the first head frame moving motor 282 and the second head frame moving motor 283. The left side plate rolling module 284 and the right side plate rolling module 285 roll the left side plate and the right side plate from the other end of the aerial work platform boom during welding. The cover plate rolling module 286 rolls the top plate from above the aerial work platform boom during welding.

[0038] The automatic assembly platform operates as follows: the base plate, left side plate, right side plate, and cover plate are fed by the loading boom 4; the base plate is positioned by several first centering and positioning mechanisms 235; the left and right side plates are placed on the pin positioning mechanism 25 and the side plate positioning mechanism 26, and after being fixed by the pin positioning mechanism 25 and the side plate positioning mechanism 26, the left and right side plates are rotated to both sides of the boom base plate of the aerial work platform, and are positioned in conjunction with the positioning core 24; after the boom side plates of the aerial work platform are positioned with the boom base plate of the aerial work platform, the loading boom 4 feeds the cover plate. The boom is positioned at the top of the two boom side plates and positioned by the positioning protrusion at one end of the boom and the positioning core 24 at the other end. After the boom cover plate, boom side plates and boom bottom plate are positioned, one end is tightened by the tail frame tightening mechanism 27 and the other end is pressed by the head frame rolling mechanism 28. The head frame rolling mechanism 28 can follow and cooperate with the spot welding robot 5 to complete the spot welding of the boom, thereby completing the pre-assembly of the boom. After the pre-assembly is completed, several first conveying roller mechanisms 22 lift the boom and unload it.

[0039] like Figure 9 As shown, the automatic welding platform 6 includes a second base 61, a second conveying roller mechanism 62, a support platform 63, a second centering and positioning mechanism 64, and a welding follow-up mechanism 65. Several second conveying roller mechanisms 62 and support platforms 63 are provided, and two second centering and positioning mechanisms 64 are provided. The several second conveying roller mechanisms 62 and support platforms 63 are arranged in a straight line and evenly on the second base 61. The two second centering and positioning mechanisms 64 are spaced apart on the second base 61 and located at the loading end of the automatic welding platform 6. The welding follow-up mechanism 65 is movably positioned above the second conveying roller mechanism 62, support platform 63, and second centering and positioning mechanism 64 via the bottom conveying guide rail 66. The aerial work platform boom is unloaded from the automatic assembly platform 2 onto the automatic welding platform 6, positioned by the two second centering and positioning mechanisms 64, and conveyed into place by the several second conveying roller mechanisms 62. The support platform 63 provides support for the aerial work platform boom. The welding follow-up mechanism 65 automatically welds the aerial work platform boom after it has been conveyed into place.

[0040] Among them, such as Figure 10As shown, the welding follow-up mechanism 65 includes a gantry frame 651, a third lifting module 652, a fourth lifting module 653, a first upper welding follow-up component 654, a second upper welding follow-up component 655, a first lower welding follow-up component 656, and a second lower welding follow-up component 657. The third lifting module 652 and the fourth lifting module 653 are arranged opposite each other on the gantry frame 651. The first upper welding follow-up component 654 and the first lower welding follow-up component 656 are positioned vertically. The moving parts are set on the third lifting module 652. The second upper welding follower component 655 and the second lower welding follower component 656 are movably set on the fourth lifting module 653. The first upper welding follower component 654, the first lower welding follower component 656 and the second upper welding follower component 655, the second lower welding follower component 657 form a boom welding station for the aerial work platform. A four-gun welding method is used, corresponding to the upper and lower connection points of the boom of the aerial work platform.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic assembly welding line for the booms of an aerial platform vehicle, characterized in that it comprises: The system includes a loading roller conveyor, an automatic assembly platform, a loading truss, a loading boom, a spot welding robot, and an automatic welding platform. The loading roller conveyor is located on one side of the automatic assembly platform, and the spot welding robot is located on the other side. The loading truss spans above the loading roller conveyor, the automatic assembly platform, and the spot welding robot. The loading boom is movably mounted on the loading truss. The automatic welding platform is located at the unloading end of the automatic assembly platform. The base plate, side plates, and cover plates that make up the aerial work platform boom are loaded onto one side of the automatic assembly platform via the loading roller conveyor and transported to the automatic assembly platform by the loading boom to complete the pre-assembly of the aerial work platform boom with the spot welding robot. After the pre-assembly is completed, the components are unloaded from the head of the automatic assembly platform to the automatic welding platform to complete the welding of the aerial work platform boom. The automatic assembly platform includes a first base, a first conveying roller mechanism, a first centering and positioning mechanism, a positioning core, a pin positioning mechanism, a side plate positioning mechanism, a tailstock clamping mechanism, and a headstock rolling mechanism. Several of the first conveying roller mechanism, the first centering and positioning mechanism, and the side plate positioning mechanism are provided. Two pin positioning mechanisms are provided. A boom assembly station for the aerial work platform is located on the first base. Several first conveying roller mechanisms and first centering and positioning mechanisms are evenly arranged in a straight line on the boom assembly station. The boom base plate is fed by a loading boom and positioned by several first centering and positioning mechanisms. The positioning core is adapted to the inner cavity of the boom. Two pin positioning mechanisms are positioned opposite each other on both sides of the head of the boom assembly station. Several side plate positioning mechanisms are evenly arranged on both sides of the middle and tail of the boom assembly station. The boom side plates are fed by a loading boom to the pin positioning mechanisms and side plate clamping mechanisms. The plate positioning mechanism, through a pin positioning mechanism and a side plate positioning mechanism, places the boom side plates of the aerial work platform on both sides of the boom base plate and positions them with the positioning core. After the boom side plates and boom base plate are positioned, the boom cover plate is loaded onto the top of the two boom side plates by the loading boom and positioned by the positioning protrusion at one end of the boom and the positioning core at the other end. The first base has movable parts on both sides along the length of the boom. The moving rack, the head frame rolling mechanism and the tail frame tightening mechanism are movably mounted on the moving rack. After the boom cover plate, boom side plate and boom base plate of the aerial work platform are positioned, one end of the boom is tightened by the tail frame tightening mechanism and the other end is pressed by the head frame rolling mechanism. The head frame rolling mechanism can follow and cooperate with the spot welding robot to complete the spot welding work of the boom. After the spot welding work is completed, the boom is lifted and unloaded by several first conveying roller mechanisms.

2. The automatic assembling and welding line of the boom of the climbing truck according to claim 1, characterized in that: The first conveying roller mechanism includes a roller and a lifting motor, wherein the motor shaft of the lifting motor faces upward and is connected to the roller.

3. The automatic assembling and welding line of the boom of the climbing truck according to claim 1, characterized in that: The first centering and positioning mechanism includes a bracket, a top plate, a centering execution cylinder, a centering transmission assembly, a first centering positioning block, and a second centering positioning block. The top plate is mounted on the bracket and has a first movable slot and a second movable slot facing each other on the left and right sides along the width direction of the aerial work platform boom. The centering execution cylinder and the centering transmission assembly are mounted inside the bracket and are connected to the centering transmission assembly. The first centering positioning block and the second centering positioning block are movably mounted on the centering transmission assembly on the left and right sides. The top of the first centering positioning block extends out from the first movable slot, and the top of the second centering positioning block extends out from the second movable slot.

4. The automatic assembling and welding line of the boom of the climbing truck according to claim 1, characterized in that: The pin positioning mechanism includes a first left-right moving module, a first flipping module, a first flipping transmission component, a first lifting module, a first positioning plate, a first electromagnetic chuck, and a positioning pin. The first flipping module and the first flipping transmission component are movably mounted on the first left-right moving module. The first flipping module is connected to the first flipping transmission component. The first lifting module is rotatably mounted on the first flipping transmission component. The first positioning plate is movably mounted on the first lifting module. The first electromagnetic chuck and the positioning pin are mounted on the first positioning plate. Several electromagnetic chucks are evenly distributed.

5. The automatic assembling and welding line of the boom of the climbing truck according to claim 1, characterized in that: The side panel positioning mechanism includes a second left-right moving module, a second flipping module, a second flipping transmission assembly, a second lifting module, a second positioning plate, and a second electromagnetic chuck. The second flipping module and the second flipping transmission assembly are movably mounted on the second left-right moving module. The second flipping module is connected to the second flipping transmission assembly. The second lifting module is rotatably mounted on the second flipping transmission assembly. The second positioning plate is movably mounted on the second lifting module. The second electromagnetic chuck is evenly mounted on the second positioning plate.

6. The automatic assembly and welding line for the boom of an aerial work platform according to claim 1, characterized in that: The tailstock clamping mechanism includes a tailstock, a first tailstock moving motor, a second tailstock moving motor, a third left-right moving module, a fourth left-right moving module, a first top pressure plate, and a second top pressure plate. The first and second tailstock moving motors are arranged opposite each other on the tailstock, driving the tailstock to move along the movable racks on both sides of the first base. The third and fourth left-right moving modules are arranged opposite each other on the front side of the tailstock. The first top pressure plate is movably mounted on the third left-right moving module, and the second top pressure plate is movably mounted on the fourth left-right moving module.

7. The automatic assembling and welding line of the boom of the climbing truck according to claim 1, characterized in that: The headframe rolling mechanism includes a headframe, a first headframe moving motor, a second headframe moving motor, a left side plate rolling module, a right side plate rolling module, and a cover plate rolling module. The first and second headframe moving motors are arranged opposite each other on the headframe, driving the headframe to move along the movable racks on both sides of the first base. The left side plate rolling module and the right side plate rolling module are arranged opposite each other on the headframe and located on both sides of the aerial work platform boom assembly station. The cover plate rolling module is arranged on the headframe and located above the aerial work platform boom assembly station.

8. The automatic assembling and welding line of the boom of the climbing truck according to claim 1, characterized in that: The automatic welding platform includes a second base, a second conveying roller mechanism, a support platform, a second centering and positioning mechanism, and a welding follow-up mechanism. Several second conveying roller mechanisms and support platforms are provided, and two second centering and positioning mechanisms are provided. These mechanisms are arranged in a straight line and evenly on the second base. The two second centering and positioning mechanisms are spaced apart on the second base and located at the loading end of the automatic welding platform. The welding follow-up mechanism is movably positioned above the second conveying roller mechanism, support platform, and second centering and positioning mechanism via a bottom conveying guide rail. The aerial work platform boom is unloaded from the automatic assembly platform onto the automatic welding platform, positioned by the two second centering and positioning mechanisms, and conveyed into place by the several second conveying roller mechanisms. The support platform provides support for the aerial work platform boom. The welding follow-up mechanism automatically welds the aerial work platform boom after it has been conveyed into place.

9. The automatic assembling and welding line of the boom of the climbing truck according to claim 8, characterized in that: The welding follow-up mechanism includes a gantry frame, a third lifting module, a fourth lifting module, a first upper welding follow-up component, a second upper welding follow-up component, a first lower welding follow-up component, and a second lower welding follow-up component. The third and fourth lifting modules are arranged opposite each other on the gantry frame. The first upper welding follow-up component and the first lower welding follow-up component are movably mounted on the third lifting module. The second upper welding follow-up component and the second lower welding follow-up component are movably mounted on the fourth lifting module. The first upper welding follow-up component, the first lower welding follow-up component, the second upper welding follow-up component, and the second lower welding follow-up component form a boom welding station for the aerial work platform.

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