Assembly welding production line

Abstract

According to the installing and welding production line, the structure of the conveying assembly of the installing and welding production line is improved, and the conveying precision of the to-be-machined part is ensured. The installing and welding production line comprises a machining platform structure distributed in the extending direction of the installing and welding production line and a conveying assembly capable of being switched between a transportation working condition and a standby working condition. The conveying assembly comprises a roller device and a traction device, the traction device is used for pulling the to-be-machined part to move forwards in the extending direction, and the roller device can make contact with the bottom of the to-be-machined part and form rolling fit with the bottom of the to-be-machined part; the roller device is arranged in the machining platform structure and can move up and down in the vertical direction, and in the transportation working condition, the roller device moves up to the upper side of the machining platform structure and can make contact with a workpiece to be machined; and under the standby working condition, the roller device is separated from the workpiece to be machined and falls back into the machining platform.

Description

Technical Field

[0001] The present invention relates to the technical field of railway vehicle processing, and in particular to an assembly welding production line. Background Art

[0002] At present, the online transmission system of the side wall production line mostly adopts a transportation mode that integrates lifting and conveying. In this mode, each component of the production line is equipped with an independent and liftable conveying mechanism. The conveying mechanism integrates the lifting function with the conveying function. The mechanism mostly adopts a loading-type handling structure; however, in this process, the conveying mechanism drives the overall movement of the side wall through the friction force generated with the side wall side plate. In this process, once relative sliding occurs in any direction between the side wall side plate, it will inevitably affect the conveying accuracy of the side wall. Summary of the invention

[0003] The object of the present invention is to provide a welding production line, by improving the structure of a conveying component of the welding production line, thereby ensuring the conveying accuracy of the workpiece to be processed.

[0004] To achieve the above-mentioned purpose, the present invention provides a welding production line, including a processing platform structure distributed along the extension direction of the welding production line and a conveying component that can switch between a transport condition and a standby condition; the conveying component includes a roller device and a pulling device, the pulling device is used to pull the workpiece to be processed forward along the extension direction, and the roller device can contact the bottom of the workpiece to be processed and form a rolling fit; the roller device is arranged in the processing platform structure and can move vertically up and down, in the transport condition, the roller device moves up to the upper side of the processing platform structure and can contact the workpiece to be processed; in the standby condition, the roller device is separated from the workpiece to be processed and falls back to the inside of the processing platform.

[0005] By adopting the technical solution of the present application, the lifting function and the pulling function of the conveying assembly are decoupled and are provided separately by two components, the roller device and the pulling device; moreover, the roller device is arranged inside the processing platform structure, and can extend out of the processing platform under transportation conditions, and fall back and retract into the interior of the processing platform under standby conditions, thereby avoiding interference with the operation of the welding production line on the workpiece to be processed under standby conditions; at the same time, the transmission assembly can realize the precise transportation of the workpiece to be processed between the various workstations in the production line, and its arrangement in the production line is less destructive to the working platform structure than other transportation methods, thereby ensuring the integrity and workability of the working platform structure.

[0006] Optionally, the processing platform structure is provided with a mounting groove, the mounting groove extends in the same direction as the assembly welding production line, and the mounting groove is used to accommodate at least part of the pulling device. Thus, the pulling device can be integrated into the processing platform structure, further ensuring the integrity of the working platform structure.

[0007] Optionally, each of the roller devices includes two roller groups, each of which includes at least one roller wheel; the two roller groups are arranged opposite to each other along the width direction of the welding production line, thereby ensuring the support stability of the workpiece to be processed.

[0008] Optionally, the mounting groove is located between the two roller groups in the width direction of the assembly welding line, thereby applying a tensile force at a position between the two roller groups.

[0009] Optionally, the roller device includes a driving part and an adapter; the two roller groups are fixed to the adapter, and the driving part is in transmission connection with the adapter. The adapter is provided to achieve synchronous up and down movement of the two roller groups, thereby ensuring the consistency of movement.

[0010] Optionally, the middle of the adapter is concave to form a concave section, and the two sides are turned outward and extend in a horizontal direction away from each other to form a flange; the roller group is fixedly arranged in the concave section, and the driving part is two lifting cylinders, which are arranged on the lower side of the flange. By concavely forming a concave section in the middle and fixing the roller group in the concave section, the space occupied by the roller device in the vertical direction is reduced.

[0011] Optionally, the concave section is located at a lower portion of the mounting groove in the vertical direction.

[0012] Optionally, the pulling device includes a drive chain assembly, the drive chain assembly includes a sprocket driving end, a sprocket driven end, and a chain wound around the sprocket driving end and the sprocket driven end, and the chain is arranged in the installation groove.

[0013] Optionally, the pulling device further comprises a pulling vehicle and a connecting portion, the mounting groove cooperates with the guide of the pulling vehicle, and one end of the connecting portion remains connected to the workpiece to be processed in both the transporting condition and the standby condition; The pulling trolley is provided with a vertical slide rail, and the other end of the connecting part is connected to the pulling trolley and slides with the vertical slide rail. Thus, it can be ensured that the workpiece can be connected in both the conveying condition and the standby condition, reducing the operation steps and improving the processing efficiency.

[0014] Optionally, the processing platform structure is an integrated structure formed by detachably splicing a plurality of platform foundations in sequence; each of the platform foundations is provided with at least one of the roller devices; the mounting groove comprises a plurality of groove sections extending along the assembly welding production line, and each of the platform foundations is provided with the groove sections.

[0015] By adopting this method, combining the conveying component in the present application with the detachable connection production line, the process flow of the parts to be processed within the production line can be realized, thereby realizing assembly line operation.

[0016] Optionally, one of the sprocket driving end and the sprocket driven end is fixed to the starting end of the assembly welding production line, and the other is fixed to the terminal end of the assembly welding production line. In the present application, the assembly welding production line adopts a transmission method of a unified large-circulation chain drive for the entire line, rather than a separate chain cycle for each station in the production line. The transmission mechanism in the present application is relatively simple, and there is no need to set up a lot of mechanical chain drives for power transmission. Because many intermediate chain drives are omitted, the transmission efficiency of the transmission component will be greatly improved, and its energy-saving effect is obvious.

[0017] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 is a structural schematic diagram of a welding production line in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of a partial structure of the invention, wherein the parts shown include a mounting groove, a conveying assembly and a workpiece to be processed; Figure 3 yes Figure 2 A partial structural diagram showing the starting end of the welding production line; Figure 4 is a top view of the mounting slot and the separator; Figure 5 yes Figure 4 Side view of Figure 6 is a schematic structural diagram of a drive chain assembly in an embodiment of the present invention; Figure 7 is a schematic structural diagram of a driven end of a drive chain assembly in an embodiment of the present invention; Figure 8 In the embodiment of the present invention Figure 1 A partial schematic diagram showing the mounting slot and the pulling device; Fig. 9 It is a schematic diagram of the structure of the traction vehicle; Fig.10 is a schematic structural diagram of a towing hook in an embodiment of the present invention; Fig.11 is a schematic structural diagram of a roller device in an embodiment of the present invention; Fig.12 is a schematic structural diagram of a bracket body in an embodiment of the present invention; Fig.13 yes Fig.12 A top view of a portion of the structure; Fig.14 is a schematic diagram of the structure of a single platform foundation in an embodiment of the present invention; Fig.15 It is a partial enlarged schematic diagram of the docking part of the two platform foundations; Fig.16 yes Fig.15 A partial cross-sectional view of Fig.17 is a schematic structural diagram of a base frame in an embodiment of the present invention; Fig.18 is a schematic structural diagram of an end support beam in an embodiment of the present invention; Fig.19 It is a partial structural schematic diagram of the walking track in an embodiment of the present invention; Fig. 20 It is a structural schematic diagram of the docking state of two walking tracks in the docking state of two platform foundations in an embodiment of the present invention; Fig.21 is a side sectional view along the width direction of the production line in an embodiment of the present invention; Fig. 22 is Fig.21 A partial cross-sectional view of the structure after being adapted to the conveying component.

[0020] Reference numerals: 1-workpiece to be processed; 2-production line; connection direction; width direction of platform foundation; extension direction; 200-processing platform structure; 200a-platform foundation; 21-underframe; 21a-frame body; 22-end supporting beam; 22a-outer end wall; 22b-inner end wall; 22c-top wall; 22d-height reference positioning plate; 23-panel; 23a-plate; 23a-1-steel frame; 23a-1a-vertical beam; 23a-2-steel plate; 23b-shielding part; 24-installation groove; 24a-upper groove cavity; 24b-lower groove cavity; 24c-groove section; 24d-groove inner table surface; 25-first connecting piece; 26-second connecting piece; 27a-protrusion; 27b-recess; 28-supporting surface; 28a-inspection cover; 28a-1-through hole; 300-connection assembly; 301-travel track; 31-track support beam; 31a-top beam wall; 31a-1-top connection area; 31b-track body; 31c-outer beam wall; 31c-1-side connection area; 31d-guide rail plate; 32-first transition plate; 33-second transition plate; 400-processing assembly; 401-gantry; 500-transportation assembly; transportation condition; standby condition; 500 a-roller device; 51-roller group; 51a-roller wheel; 52-lifting cylinder; 53-adapter; 53a-concave section; 53b-flange; 53c-connecting arm; 54-wheel bracket; 54a-bracket body; 54a-1-support vertical plate; 54a-2-support horizontal plate; 54a-3-shaft end lock cover; 54b-bearing; 54e-rotating shaft; 500b-drive chain assembly; 55-sprocket driving end; 55a-reducer; 55b-driving sprocket; 55c-driving end connecting seat; 56-sprocket driven end; 56a-driven frame; 56b-seat bearing; 56c-pull rod; 56d -driven shaft; 56e-driven sprocket; 56s-driven end connecting seat; 57-chain; 57a-tight edge; 57b-loose edge; 500c-pulling device; 58-pulling vehicle; 58a-traveling wheel; 58b-hook wheel; 58c-vehicle body; 58d-vertical slide rail; 58e-connecting part; 59-traction hook; 59a-chain clamp; 59b-safety ring; 59c-wire rope; 59d-vehicle hook; 600-partitioning piece; 600a-partitioning vertical plate; 600b-partitioning horizontal plate; 600c-wing plate; 600d-guide plate; 61-chain guide rail; 62-chain support plate. DETAILED DESCRIPTION

[0021] Relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0022] Please refer to Figures 1 to 22 , Figure 1is a schematic structural diagram of a welding production line 2 in an embodiment of the present invention; Figure 2 yes Figure 1 A partial structural diagram of the embodiment of the present invention, wherein the illustrated part includes a mounting groove 24, a conveying assembly 500 and a workpiece 1 to be processed; Figure 3 yes Figure 2 A partial structural schematic diagram showing the starting end of the welding production line 2; Figure 4 is a top view of the mounting groove 24 and the partition 600; Figure 5 yes Figure 4 Side view of Figure 6 is a schematic structural diagram of a drive chain assembly 500b according to an embodiment of the present invention; Figure 7 is a schematic structural diagram of a driven end of a drive chain assembly 500b in an embodiment of the present invention; Figure 8 In the embodiment of the present invention Figure 1 A partial schematic diagram showing the mounting slot 24 and the pulling device 500c; Fig. 9 is a schematic diagram of the structure of the pulling vehicle 58; Fig.10 is a schematic structural diagram of a traction hook 59 in an embodiment of the present invention; Fig.11 is a schematic structural diagram of a roller device 500a in an embodiment of the present invention; Fig.12 is a schematic structural diagram of a bracket body 54a in an embodiment of the present invention; Fig.13 yes Fig.12 A top view of a portion of the structure; Fig.14 is a schematic diagram of the structure of a single platform foundation 200a in an embodiment of the present invention; Fig.15 is a partial enlarged schematic diagram of the docking portion of two platform foundations 200a; Fig.16 yes Fig.15 A partial cross-sectional view of Fig.17 is a schematic structural diagram of the base frame 21 in an embodiment of the present invention; Fig.18 is a schematic structural diagram of the end supporting beam 22 in an embodiment of the present invention; Fig.19 is a partial structural schematic diagram of the walking track 301 in an embodiment of the present invention; Fig. 20 It is a structural schematic diagram of the docking state of two walking tracks 301 in the docking state of two platform foundations 200a in an embodiment of the present invention; Fig.21 is a side sectional view along the width direction of the production line 2 in an embodiment of the present invention; Fig. 22 is Fig.21 A partial cross-sectional view after being adapted to the conveying component 500.

[0023] As shown in the figure, a welding production line 2 includes a processing platform structure 200 distributed along the extension direction of the welding production line 2 and a conveying component 500 that can switch between a transport condition and a standby condition. The processing platform structure 200 is an integrated structure formed by detachably splicing a plurality of platform foundations 200a in sequence. Of course, the platform component can also be a split structure. Those skilled in the art can choose by themselves; the working platform structure has a plurality of processing stations. In order to move the workpiece 1 to be processed online to each processing area, this embodiment also provides a conveying component 500.

[0024] The conveying assembly 500 includes a roller device 500a and a pulling device 500c. The pulling device 500c is used to pull the workpiece 1 to be processed forward along the extension direction, and the roller device 500a can contact the bottom of the workpiece 1 to be processed and form a rolling fit; the roller device 500a is arranged in the processing platform structure 200 and can move vertically up and down. In the transportation condition, the roller device 500a moves up to the upper side of the processing platform structure 200 and can contact the workpiece 1 to be processed; in the standby condition, the roller device 500a is separated from the workpiece 1 to be processed and falls back to the inside of the processing platform.

[0025] In this embodiment, the roller device 500a is used to lift the workpiece 1 to be processed from each station of the working platform structure of the production line 2. When the workpiece 1 to be processed moves between each station, the roller device 500a can roll with the workpiece 1 to be processed. The pulling device 500c is used to power the workpiece 1 to be processed on the raised unpowered roller group 51 for online transmission. Online transmission means that in the integrated processing platform structure 200, the workpiece 1 to be processed is always connected to the processing platform structure 200.

[0026] The roller device 500a can be completely hidden inside the working platform structure when in standby mode. In transport mode, the roller device 500a partially protrudes from the working platform structure surface. The pulling device 500c does not need to have a lifting function, thereby simplifying the structure of the pulling device 500c and the roller device 500a. The number of internal components can naturally be greatly reduced, which is beneficial to reducing manufacturing costs and is also convenient for subsequent maintenance.

[0027] In addition, the lifting function and the pulling function of the conveying assembly 500 are decoupled and are provided separately by two components, namely the roller device 500a and the pulling device 500c; and, the roller device 500a is arranged inside the processing platform structure 200, and can extend out of the processing platform under transportation conditions, and fall back and retract into the interior of the processing platform under standby conditions, thereby avoiding interference with the operation of the welding production line 2 on the workpiece 1 to be processed under standby conditions; at the same time, the transmission assembly can realize the precise transportation of the workpiece 1 to be processed between the various workstations in the production line 2, and its arrangement in the production line 2 is less destructive to the working platform structure than other transportation methods, thereby ensuring the integrity and workability of the working platform structure.

[0028] In an optional embodiment, each roller device 500a includes a driving unit and two roller groups 51 arranged relatively along the width direction of the welding production line 2 (perpendicular to the extension direction of the production line 2). Driven by the driving unit, the two roller groups 51 can move vertically independently or synchronously. Each roller group 51 includes at least one roller 51a; each roller group 51 can include one roller 51a as shown in the example, or can include multiple rollers 51a. The number of rollers 51a included in the roller group 51 can be the same or different. In the conveying condition, at least part of the roller 51a protrudes to the working platform structure to lift the workpiece 1 to be processed away from the working platform structure; in the standby condition, all the rollers 51a fall back to the inside of the working platform structure. At this time, the workpiece 1 to be processed is in contact with the working platform structure again, and the working platform structure plays a role in supporting the workpiece 1 to be processed vertically.

[0029] The roller device 500a includes an adapter 53; both roller groups 51 are fixed to the adapter 53, and the rollers 51a can roll relative to the adapter 53, and the rotation axis 54e of each roller 51a extends along the width direction of the production line 2. The driving part is connected to the adapter 53. The adapter 53 is provided to achieve synchronous up and down movement of the two roller groups 51, ensuring the consistency of movement.

[0030] In a specific embodiment, the adapter 53 is a U-shaped plate structure, which is arranged along the width direction. The middle part of the adapter 53 is concave to form a concave section 53a, and the two sides are turned outward and extend in a horizontal direction away from each other to form a flange 53b; the flange 53b and the concave section 53a both extend in the horizontal direction. The adapter 53 also includes a connecting arm 53c, which extends vertically and is located between the flange 53b and the concave section 53a, and serves to connect the flange 53b and the concave section 53a. The roller group 51 is fixed to the concave section 53a, and the driving part is two lifting cylinders 52. The two lifting cylinders 52 are arranged on the lower side of the flange 53b. The lifting cylinders 52 are cylinders and can be pushed upward and dropped downward in the vertical direction. The lifting cylinders 52 are fixed to the working platform structure.

[0031] By forming a concave section 53a by concavely concave the middle part and fixing the roller group 51 in the concave section 53a, the space occupied by the roller device 500a in the vertical direction is reduced. At the same time, by adopting this structure, the structure of the traditional conveying assembly 500 is greatly simplified, and the cost is significantly reduced.

[0032] In a more specific embodiment, the roller device 500a further includes a wheel bracket 54 and a bottom flange seat, two cylinders are respectively connected to the bottom of the flanges 53b at both ends of the adapter 53 through flange joints, two wheel brackets 54 are installed at both ends above the concave section 53a in the middle of the adapter 53, two rollers 51a are respectively fixed on the corresponding wheel brackets 54, and two bottom flange seats are installed at the bottom of each cylinder. The bottom flange seat is a set of welded structural parts, through which the lifting cylinder 52 is fixedly installed at the bottom of the working platform structure of the production line 2, and it is also the installation base of the electromagnetic valve for controlling the actuation of the above-mentioned cylinder.

[0033] In addition, the working platform structure also includes a limit stop to form a limit with the flange 53b in the vertical direction. In order to effectively reduce the height space occupied by the roller device 500a and facilitate its overall installation inside the working platform structure of the production line 2, the combination of the wheel bracket 54 and the roller 51a is not placed directly above the power cylinder that lifts the workpiece 1 to be processed, but is offset to one side of the cylinder. The cylinder and the above combination are connected in series through the adapter 53. When the adapter 53 is working and lifting with the roller 51a on it, its lifting height is controlled by the flanges 53b at both ends of the adapter 53 hitting the height limit stop inside the working platform structure.

[0034] Structurally, only the upper portion of the roller 51a is higher than the flanges 53b at both ends of the adapter 53, so during online transmission, only the upper portion of the roller 51a protrudes from the structural surface of the working platform, which can maximize the integrity and workability of the working platform structure.

[0035] The adapter 53 is a connecting rod assembly that carries force and ensures synchronization between the two cylinders. It is mainly a plate folding part. Under the premise of meeting the required strength, the horizontal load-bearing section of the adapter 53 occupies the smallest height space, which is beneficial to reducing the overall height of the roller device 500a.

[0036] The wheel bracket 54 is a supporting and fixing component for the roller 51a, and includes a bracket body 54a and an axle end lock cover 54a-3. The bracket body 54a is composed of two supporting vertical plates 54a-1 arranged opposite to each other in the width direction; the rotating shaft 54e is fixed to the supporting vertical plate 54a-1 on the corresponding side through the axle end lock cover 54a-3; the bottom of the supporting vertical plate 54a-1, that is, the side away from the rotating shaft 54e, is fixedly connected with a supporting horizontal plate 54a-2, thereby forming. The two axle end lock covers 54a-3 are arranged on both sides of the roller 51a installation position at the top of the bracket body 54a. The bracket body 54a is a set of welded structural parts used to support the roller 51a. The axle end lock cover 54a-3 is a processed part used to fix the roller 51a on the bracket body 54a.

[0037] Specifically, the shaft end lock cover 54a-3 is used to limit the axial movement of the rotating shaft 54e. The roller group 51 is a non-powered structure. A rolling bearing 54b is embedded between the roller 51a and the rotating shaft 54e. The combination of the roller 51a and the bearing 54b is used to reduce the rolling resistance torque, so that the large and heavy workpiece 1 to be processed is not easy to slide relative to the roller 51a when rolling forward on the roller 51a, thereby avoiding scratches on the workpiece 1 to be processed. At the same time, the roller 51a is made of MC nylon with light weight and good wear resistance. While effectively reducing the scratches on the workpiece 1 plate, it is also convenient for manual installation and disassembly. In addition, the MC nylon wheel also has good quietness, which can reduce the noise generated when the workpiece 1 to be processed is transported.

[0038] In the above technical solution, in order to facilitate maintenance, an opening can be provided on the support surface 28 of the working platform structure, and after the opening is opened, the working platform structure can be entered through the opening to perform maintenance on the roller device 500a. The opening is provided with an openable and closable maintenance cover 28a, and the maintenance cover 28a is also provided with a through hole 28a-1, which is arranged opposite to the roller 51a to allow the roller 51a to pass through.

[0039] By adopting the above-mentioned embodiment, the roller device 500a only plays the function of vertical lifting and rolling adaptation, so the number of roller devices 500a can be more reasonable, and it will not be densely arranged in the conveying direction of the workpiece 1 to be processed like the traditional conveying component 500, thereby simplifying the structure of the production line 2 and reducing costs.

[0040] In other embodiments, the processing platform structure 200 is provided with a mounting groove 24, and the mounting groove 24 extends in the same direction as the assembly welding production line 2. The mounting groove 24 is formed by the support surface 28 being recessed downward in the vertical direction. The mounting groove 24 is used to accommodate at least part of the pulling device 500c. Thus, the pulling device 500c can be integrated into the processing platform structure 200, further ensuring the integrity of the working platform structure.

[0041] As an optional method, the mounting groove 24 is located between the two roller groups 51 in the width direction of the assembly welding line 2. Thus, the tension is applied at the position between the two roller groups 51. Of course, the mounting groove 24 can also be set outside the two roller groups 51. That is, one mounting groove 24 or two mounting grooves 24 can be set. Those skilled in the art can choose by themselves.

[0042] When the installation groove 24 is located between the two roller groups 51, the vertical concave section 53a is located at the lower part of the installation groove 24, and it is ensured that when the concave section 53a moves vertically up and down, the bottom of the installation groove 24 will not interfere with the concave section 53a on its moving path.

[0043] In this embodiment, the pulling device 500c includes a drive chain assembly 500b, a pulling trolley 58 and a connecting portion 58e. The mounting groove 24 cooperates with the guide of the pulling trolley 58. The drive chain assembly 500b provides the pulling trolley 58 with power for traveling. Of course, other power structures can also provide power for the pulling trolley 58, and those skilled in the art can choose by themselves. One end of the connecting portion 58e is connected to the workpiece 1 to be processed in both the transport condition and the standby condition; the pulling trolley 58 is provided with a vertical slide rail 58d, and the other end of the connecting portion 58e is connected to the pulling trolley 58 and slidably cooperates with the vertical slide rail 58d. In this way, it can be ensured that it can be connected to the workpiece 1 to be processed in both the transport condition and the standby condition, which reduces the operation steps and improves the processing efficiency.

[0044] The connection method of the installation groove 24 and the pulling device 500c in the present application is described below using a specific example.

[0045] In this embodiment, the drive chain assembly 500b includes a sprocket driving end 55, a sprocket driven end 56, and a chain 57 wound around the sprocket driving end 55 and the sprocket driven end 56, and the chain 57 is arranged in the mounting groove 24. One of the sprocket driving end 55 and the sprocket driven end 56 is fixed to the starting end of the assembly welding production line 2, and the other is fixed to the terminal of the assembly welding production line 2. In the present application, the assembly welding production line 2 adopts a transmission method of a unified large-circulation chain drive for the entire line, rather than a separate chain cycle for each station in the production line 2. The transmission mechanism in the present application is relatively simple, and there is no need to set up a lot of mechanical chain drives for power transmission. Because many intermediate chain drives are omitted, the transmission efficiency of the transmission assembly will be greatly improved, and its energy-saving effect is obvious.

[0046] In this embodiment, in order to achieve the fixation of the sprocket master and slave ends to the processing platform structure 200, a driving end connecting seat 55c and a driven end connecting seat 56s are also provided. The driving chain assembly 500b is used as the power source for traction of the workpiece 1 to be processed, and is mainly composed of a traction chain 57, a sprocket master end 55, a driving end connecting seat 55c, a sprocket slave end 56 and a driven end connecting seat 56s. The axes of the sprocket master and slave ends are arranged in parallel and are arranged at both ends of the traction chain 57. The master and slave end connecting seats 56s are respectively connected to the inner side of the sprocket master and slave ends. The traction chain 57 adopts a short pitch precision roller chain. The pitch size of this chain 57 is relatively small, which can effectively reduce the diameter size of the master and slave sprockets, thereby reducing the height space size occupied by the chain drive, and then reducing the height size of the mounting slot 24 accommodating it, reducing the height space size occupied by the working platform structure, and maximizing the integrity and workability of the working platform structure.

[0047] Specifically, the sprocket driving end 55 is mainly composed of a reducer 55a and a driving sprocket 55b. The driving sprocket 55b is connected to the power source through the reducer 55a to drive the sprocket driven end 56 to rotate together through the chain 57. The sprocket driven end 56 specifically includes a driven frame 56a, a seat bearing 56b, a pull rod 56c, a driven shaft 56d and a driven sprocket 56e. The two seat bearings 56b are respectively located between the upper and lower guide rails on both sides of the driven frame 56a, and are longitudinally fixed to the driven frame 56a by the pull rod 56c. When necessary, the longitudinal position of the seat bearing 56b can be controlled by adjusting the extension length of the pull rod 56c, thereby controlling the tension of the traction chain 57. The driven shaft 56d is installed and fixed in the two seat bearings 56b, and a driven sprocket 56e is installed at its shaft end. The driven sprocket 56e meshes with the traction chain 57 by its gear teeth. The master and slave end connecting seats 55c and 56s are both a set of welded structural parts, which serve as transition connecting parts, and are used to fix the master and slave ends of the sprocket to the outer ends of the working platform structure at both ends of the production line 2 respectively.

[0048] The middle section of chain 57 (the traction transmission chain of the entire production line 2) is placed in the installation groove 24, and only the main and driven ends of the sprockets at both ends are exposed outside the groove 24 in the extension direction, and are fixedly installed on the outer ends of the working platform structure through the main and driven end connecting seats 55c and 56s, respectively, and are located at the starting end and the terminal end of the production line 2. The chain 57 adopts the unified large-circulation chain transmission mode of the entire production line 2, that is, the chain 57 circulates from the starting end to the terminal end of the production line 2. Such a structure is also simpler, eliminating many intermediate chain transmissions, greatly improving the transmission efficiency of the entire transmission component, and having a significant energy-saving effect. In addition, the number of its internal components can also be greatly reduced, which is conducive to reducing manufacturing costs on the one hand, and is also convenient for later maintenance on the other hand.

[0049] In the technical solution of the present application, in order to adapt to different production lines 2, the length of the chain 57 can be specially customized, thereby improving the adaptability of the drive chain assembly 500b in the present application.

[0050] In some embodiments, the rotating surface of the chain 57 extends vertically, and a partition 600 is provided in the mounting groove 24. The partition 600 divides the mounting groove 24 into an upper groove cavity 24a and a lower groove cavity 24b spaced apart in the height direction. The chain 57 rotates around the partition 600, and the upper portion of the chain 57 is passed through the upper groove cavity 24a, and the lower portion is passed through the lower groove cavity 24b.

[0051] In order to limit the portion of the chain 57 that passes through the upper groove cavity 24a, a chain guide 61 is provided on the bottom wall of the partition 600 located in the upper groove cavity 24a. The chain guide 61 is provided at the center of the partition in the width direction and extends in the same direction as the extension direction of the production line 2. The chain guide 61 is located at the lower side of the chain 57 in the height direction. The chain guide 61 is used to support the tight edge 57a of the chain 57 (the portion that passes through the upper groove cavity 24a) and guide the movement direction of the chain 57. The chain guide 61 is made of polyethylene with a low friction coefficient, which can effectively reduce the wear of the traction chain 57 and reduce the generation of noise and vibration.

[0052] Optionally, a chain support plate 62 is further provided in the mounting groove 24. The chain support plate 62 may be provided on the upper side of the groove bottom wall of the mounting groove 24, or the chain support plate 62 may constitute the groove bottom wall of the mounting groove 24 itself; or the chain support plate 62 may be hung below the partition 600 by connecting bolts, that is, the chain support plate 62 and the partition 600 form a lower groove cavity 24b. The chain support plate 62 is used to support the loose edge 57b of the chain 57 (the portion passing through the lower groove cavity 24b) to prevent the edge from being too droopy and affecting the normal engagement of the chain drive.

[0053] In other embodiments, a guide plate 600d extending along the extension direction of the production line 2 is further provided, the guide plate 600d is used to cooperate with the tractor guide, and the guide plates 600d are provided on both sides of the upper groove cavity 24a along the width direction, and the position where the guide plates 600d are provided is located on the upper side of the tight edge 57a of the chain 57. The guide plate 600d can be provided on the support surface 28, or it can be provided on the upper groove cavity 24a.

[0054] In a specific embodiment, the guide plate 600d extends toward the side close to each other in the width direction, covering at least a portion of the upper groove cavity 24a. The traction vehicle 58 includes a vehicle body 58c, and four sets of running wheels 58a and hook wheels 58b rotatably connected to the vehicle body 58c. The hook wheels 58b correspond to the running wheels 58a one by one and are arranged at intervals up and down, and the gap between the two is adapted to the thickness of the guide plate 600d. Therefore, the hook wheels 58b and the running wheels 58a can be clamped on the guide plate 600d in the height direction and suspended from the upper groove cavity 24a.

[0055] Specifically, the running wheel 58a runs on the upper surface of the guide plate 600d and abuts against the side wall of the guide plate 600d on the corresponding side in the width direction through the wheel rim. The guide plate 600d plays a role in limiting the movement of the pulling vehicle 58 in the width direction, thereby ensuring that the workpiece 1 to be processed can also be transmitted online along the guide plate 600d without any deviation in the width direction. The hook wheel 58b abuts against the lower surface of the guide plate 600d in the vertical direction. On the one hand, it can share the component force of the pulling vehicle 58 lifting upward during the lifting and transmission of the workpiece 1 to be processed, ensuring that the pulling vehicle 58 always runs on the guide plate 600d and will not be lifted. On the other hand, it will form an effect of clamping the guide plate 600d with a pre-tightening force with the running wheel, so there will be a certain damping when the pulling vehicle 58 moves along the guide plate 600d; when the transmission traction power stops, the workpiece 1 to be processed and the pulling vehicle 58 as a whole will not slide forward due to inertia in the transmission direction, thereby realizing the precise transportation of the workpiece 1 to be processed.

[0056] In this embodiment, the vehicle body 58c is fixedly connected with the aforementioned vertical slide rail 58d, and the connecting portion 58e is a clamping clamp that can clamp the workpiece 1. In the technical solution of the present application, two pulling vehicles 58 and two connecting portions 58e are respectively provided in the extension direction of the production line 2, and the two connecting portions 58e are slidably connected with the pulling vehicles 58 on the corresponding sides in the height direction. The clamping clamps the workpiece 1 near the center of gravity in the width direction at the front and rear ends, respectively. Because the clamping self-locking property of the mechanism is strong, it can effectively transmit the traction power to the workpiece 1 while also effectively limiting the lateral movement of the workpiece 1.

[0057] In other embodiments, the drive chain assembly 500b further includes a traction hook 59, which is a flexible assembly for transmitting traction power from the chain 57 to the pulling vehicle 58, and mainly includes a chain clamp 59a, a safety ring 59b, a wire rope 59c and a vehicle hook 59d. The tail end of the chain clamp 59a is connected to the wire rope 59c through the safety ring 59b, and the tail end is processed with a long hole connected to the safety ring 59b. The other end of the wire rope 59c is connected to the vehicle hook 59d. A hook-shaped hook is provided at the bottom of the head end of the chain clamp 59a, and the hook-shaped hook is used to match the roller of the chain 57 and can be clamped on the roller of the chain 57. An operating handle is also provided at the top of the head end for facilitating manual hooking and unhooking. In the extension direction, the position where the traction hook 59 is clamped to the chain 57 is located downstream of the position where the traction hook 59 is connected to the pulling vehicle 58, so that the workpiece 1 to be processed can be pulled at the front.

[0058] The hook hook has an angle greater than 90 degrees on the roller of the chain 57, so it can effectively lock the chain 57 and prevent it from falling off during operation. The safety ring 59b is a long circular ring with an opening on one side, and its minimum tensile deformation load has been calculated to ensure that the chain 57 will not be damaged due to accidental overload during the pulling process. The car hook 59d is S-shaped and made of high-quality alloy material, which can quickly hook the pulling car 58 without falling off by itself. Embodiment 1

[0059] The present invention provides a production line 2 for welding railway parts 1 to be processed. The production line 2 does not rely on ground foundation connection. Through the continuous combination and connection of multiple platforms, the tire foundation required for the production line 2 for welding railway parts to be processed can be quickly formed; thereby, the tire foundation of the production line 2 can be quickly relocated, and then the need for moving and relocating the entire production line 2 is met; the platform can be flexibly and conveniently combined into a production line 2 of optimal length according to the structure and size characteristics of the parts to be processed, the number of workstations required for cutting and the length of each workstation, thereby achieving the effect of rapid customization of the production line 2, high utilization of equipment resources of the production line 2 and saving of site working area.

[0060] The assembly welding production line 2 in the present application includes a plurality of platform foundations 200a for supporting the workpiece 1 to be processed and a processing assembly 400 for operating the workpiece 1 to be processed, and two adjacent platform foundations 200a are detachably connected. Each platform foundation 200a is provided with a connecting assembly 300, and the connecting assembly 300 is used to install the processing assembly 400 to form a corresponding processing station. The conveying assembly 500 is used to move the workpiece 1 to be processed to different processing stations.

[0061] In this embodiment, the platform foundation 200a has a support surface 28 that contacts the workpiece 1 to be processed in the height direction. The connection component 300 includes a positioning and mounting hole provided on the support surface 28 of the platform foundation 200a, and the positioning and mounting hole is used to install other processing components 400, such as a positioning component and a clamping component of the product to be processed. At the same time, the connection component 300 also includes a walking track 301 provided on its side, and the processing component 400 also includes a press seam gantry, a gantry welding robot, etc. The press seam gantry and the gantry welding robot can be connected to the platform foundation 200a through the walking track 301. The platform foundation 200a can realize the flexible layout of each processing station by connecting with the processing component 400.

[0062] Specifically, the platform foundation 200a is a steel structure welded component with sufficient rigidity, which is the installation and bearing foundation of other processing components 400, and provides a reference work surface for the processing of the workpiece 1 to be processed (such as side wall welding), that is, the aforementioned support surface 28. Each platform foundation 200a includes a base frame 21 that abuts against each other in the height direction and a panel 23 fixedly connected to the top of the base frame 21. The base frame 21 is a welded square frame, which is the most basic installation and bearing body, and is mainly composed of various steel sections spliced ​​horizontally and vertically. The panel 23 is a frame structure formed by assembly welding, including a steel frame 23a-1 and a steel plate 23a-2 laid on the steel frame 23a-1, the steel frame 23a-1 is fixedly connected to the base frame 21, and the steel plate 23a-2 covers the upper side of the steel frame 23a-1 and is fixedly connected to the steel frame 23a-1. In the present technical solution, the panel 23 may be an integral structure, or may include two different plate portions 23a, and the two plate portions 23a are separate frame structures.

[0063] Positioning and mounting holes are evenly distributed on the steel plate 23a-2. The function of the positioning and mounting holes is to facilitate the rapid installation and adjustment of other processing parts (positioning components, clamping components, etc.) on the workbench to form different processing stations.

[0064] Each platform foundation 200a is provided with at least one roller device 500a; the mounting groove 24 includes a plurality of groove sections 24c extending along the assembly welding production line 2, and each platform foundation 200a is provided with a groove section 24c. The partition 600 includes a plurality of sub-sections, which are located on each platform foundation 200a and in the corresponding groove section 24c.

[0065] During the process of splicing the platform foundations 200a, due to some processing errors, the slot sections 24c may be staggered in the width direction or the height direction. In order to ensure the conveying accuracy, the present application improves the specific structure of the separator 600.

[0066] Specifically, each platform foundation 200a includes a base frame 21 that is abutted in the height direction and a panel 23 fixedly connected to the top of the base frame 21. The base frame 21 is a welded square frame, which is the most basic installation and bearing body, and is mainly composed of various steel sections spliced ​​horizontally and vertically. The panel 23 is a welded frame structure, including a steel frame 23a-1 and a steel plate 23a-2 laid on the steel frame 23a-1. The steel frame 23a-1 is fixedly connected to the base frame 21, and the steel plate 23a-2 covers the upper side of the steel frame 23a-1 and is fixedly connected to the steel frame 23a-1. The steel frame 23a-1 includes vertical beams 23a-1a, which are opposite in the width direction; the vertical beams 23a-1a belonging to the two plate parts 23a surround the aforementioned partial installation groove 24.

[0067] The steel plates 23a-2 belonging to the two plate parts 23a are fixed to the vertical beam 23a-1a, and in the width direction, parts of the vertical beam 23a-1a exceed the corresponding steel plates 23a-2, so that the installation groove 24 has a stepped structure, and the upper end surface of the vertical beam 23a-1a forms a table surface 24d inside the groove.

[0068] The inner table 24d of the groove is used to fix and connect the partition 600. Specifically, the partition 600 is an inverted "X"-shaped structure, with a partition horizontal plate 600b extending in the width direction and a partition vertical plate 600a extending in the vertical direction; the two partition vertical plates 600a are opposite in the width direction and connected to the inner table 24d of the groove on the corresponding side. Specifically, one end of the partition vertical plate 600a away from the partition horizontal plate 600b is turned outward to form a wing, and the partition horizontal plate 600b is built into the installation groove 24, and the wing is located on the upper side of the partition horizontal plate 600b, and is pressed against the inner boss in the groove in the vertical direction, and is fixedly connected to the inner table 24d of the groove.

[0069] A waist hole is provided in the inner groove table 24d, so as to realize the movement of the separator 600 in the width direction. At the same time, in the vertical direction, a pad is provided between the wing plate 600c and the inner groove table 24d, and the separator 600 can be adjusted in the height direction by changing the number of pads. Therefore, during the process of connecting the platform foundation 200a, although the installation grooves 24 are slightly staggered, the separator 600 can be basically aligned.

[0070] In actual use, at both ends of the extension direction of the production line 2, the wing plate 600c exceeds the guide plate 600d on the corresponding side. The running wheel 58a of the traction vehicle 58 can be aligned with the part of the wing plate 600c that exceeds the guide plate 600d by using docking tools or manual labor, and the traction vehicle 58 is hooked with the chain 57. Then, driven by the chain 57, the traction vehicle 58 can maintain the limited fit with the wing plate 600c and move toward the direction close to the guide plate 600d until it is vertically connected to the guide plate 600d. Similarly, at the terminal of the production line 2, the traction vehicle 58 will first move from the guide plate 600d to the wing plate 600c, and then the traction vehicle 58 will be taken out of the production line 2 by docking tools or manual labor.

[0071] In the above embodiment, in the connection direction of two adjacent platform foundations 200a, one end of each platform foundation 200a is provided with a first connection member 25, and the other end is provided with a second connection member 26. The first connection member 25 and the second connection member 26 are both protruded from the platform foundation 200a toward the side away from each other in the horizontal direction. The first connection member 25 and the second connection member 26 belonging to the adjacent platform foundations 200a are connected in the connection direction.

[0072] The two platform foundations 200a are connected in the connection direction by providing the first connecting member 25 and the second connecting member 26 on the platform foundation 200a. In this embodiment, the first connecting member 25 and the second connecting member 26 can be plug-in or overlapped or can be other detachable connection methods, all of which fall within the protection scope of this application.

[0073] The specific connection method of the two platform bases 200a is described below in a more specific implementation manner.

[0074] In the connection direction, at one end of the platform foundation 200a, the panel 23 exceeds the base frame 21, and the portion of the panel 23 exceeding the base frame 21 serves as a first connection member 25. At the other end of the platform foundation 200a, the base frame 21 exceeds the panel 23, and the portion of the base frame 21 exceeding the panel 23 serves as a second connection member 26.

[0075] The base frame 21 includes a frame body 21a and an end supporting beam 22. The frame body 21a is used to support the panel 23. The end supporting beam 22 is welded to one end of the frame body 21a to serve as a second connecting member 26. In the connecting direction, the frame body 21a is aligned with one end of the panel 23, and the other end of the panel 23 extends beyond the frame body 21a. The end supporting beam 22 is welded to the end of the frame body 21a that is aligned with the panel 23.

[0076] Therefore, in this embodiment, the end supporting beam 22 as the second connecting member 26 is located at the lower side of the first connecting member 25, that is, the panel 23 in the height direction. In the actual connection process, the first connecting member 25 is pressed against the second connecting member 26 in the vertical direction, and the lower surface of the panel 23 is pressed against the top end wall 22c of the end supporting beam 22. The pressing down here includes both direct pressing and indirect pressing.

[0077] The end supporting beam 22 is located at the non-protruding end of the panel 23 of the base frame 21, and forms a structure that can be conjugately overlapped with the protruding end of the panel 23. The stability of the platform foundation 200a of the production line 2 is increased by overlapping the first connecting member 25 and the second connecting member 26 one on top of the other.

[0078] Furthermore, one of the first connecting member 25 and the second connecting member 26 is provided with a protrusion 27a, and the other is provided with a recess 27b. The protrusion 27a and the recess 27b are plugged into each other in the vertical direction, thereby forming a horizontal connection between the two platform foundations 200a.

[0079] Furthermore, the protrusion 27a can be a positioning pin, and the recess 27b can be a positioning long hole adapted to the positioning pin. The firmness of the overlap structure of the first connecting member 25 and the second connecting member 26 is achieved through the function of the limiting pin holes that cooperate with each other between the upper and lower parts.

[0080] The end supporting beam 22 extends along the width direction of the platform foundation 200a, and the clamping protrusion 27a or the clamping recess 27b is arranged on both sides of the end supporting beam 22 along the width direction of the platform foundation 200a. In the width direction of the platform foundation 200a, at least one clamping member is arranged on both sides of the end supporting beam 22. In this way, horizontal and angular misalignment can be avoided after the structures are overlapped.

[0081] By adopting the method in the present application, multiple platform foundations 200a are locked in the connection direction through the vertically inserted limiter. At the same time, the vertical overlap structure of the ends of the platform foundation 200a allows multiple platform foundations 200a to be connected together one by one. Because the platform foundation 200a is rigidly connected as a whole and has a large deadweight, it has excellent stability and will not move due to the movement and impact of the workpiece 1 and various mechanisms during use. Therefore, the platform foundation 200a of the production line 2 does not need to rely on the ground foundation for fixation, so that the entire production line 2 can be moved when the plane is released.

[0082] Of course, in addition to the above-mentioned method, the first connecting member 25 and the second connecting member 26 can also be connected by plug-in connection; when plugging, in order to lock the first connecting member 25 and the second connecting member 26 in the horizontal direction, an elastic locking structure can be provided; the elastic locking structure is arranged on both sides along the width direction of the platform foundation 200a, which can also realize the horizontal and angular locking positioning of the two platform foundations 20a.

[0083] In the above-mentioned embodiment, the panels 23 of two adjacent platform foundations 200 a are opposed to each other in the connection direction, and the panels 23 of each platform foundation 200 a are located in the same plane.

[0084] In the actual processing process, the platform foundation 200a will have certain processing errors. In the present application, in order to compensate for the errors, a height reference positioning plate 22d can be welded and laid on at least two sections of the top end wall 22c of the end supporting beam 22. The size of the height reference positioning plate 22d in the height direction can be adjusted to compensate for the errors.

[0085] In order to facilitate the arrangement of the positioning pins and the positioning slots, the positioning pins can be fixed to the height reference positioning plate 22d, and at the same time, the lower surface of the panel 23 is provided with positioning slots at corresponding positions. Of course, the lower surface of the panel 23 can also be provided with a height reference positioning plate 22d to play the role of error compensation. This enables the support surface 28 of the assembled production line 2 to be located in the same plane, thereby forming a flat and continuous length production line 2.

[0086] In other embodiments, the direction perpendicular to the extension direction of the welding production line 2 is defined as the width direction of the welding production line 2. The welding production line 2 further includes a travel track 301, which is arranged on both sides of the welding production line 2 along the width direction of the welding production line 2 and is fixedly connected to the platform foundation 200a on the corresponding side; the welding production line 2 further includes a gantry 401, which can be adapted to the travel track 301 to move along the extension direction of the travel track 301.

[0087] A platform foundation 200a is provided in the width direction of the assembly welding production line 2, and the walking track 301 is provided on both sides of each platform foundation 200a along the width direction and extends along the connection direction; or, at least two platform foundations 200a are provided in the width direction of the assembly welding production line 2, and the walking track 301 is provided on the side of the corresponding platform foundation 200a.

[0088] For the convenience of description, the following description is made by taking an example in which a platform foundation 200a is provided in the width direction of the assembly welding production line 2.

[0089] The assembly welding production line 2 also includes the aforementioned gantry 401, and each platform foundation 200a includes the aforementioned running rails 301, which are arranged on both sides of each platform foundation 200a along the width direction of the platform foundation 200a and extend along the connection direction. After the platform foundations 200a are spliced, the running rails 301 located on the same side are docked and extend along the connection direction, which is the extension direction of the production line 2 in this application.

[0090] The gantry 401 can be matched with the running track 301 to move along the extension direction of the running track 301. The running track 301 can be matched with the gantry 401 by setting.

[0091] Specifically, the running track 301 includes a track support beam 31 and a track body 31b arranged on the track support beam 31. The track support beam 31 is fixedly connected to the base frame 21. The track support beam 31 has a top beam wall 31a, and the track body 31b is arranged on the top beam wall 31a. In this way, the track body 31b can be fixedly connected to the base frame 21 through the track support beam 31, which facilitates the layout of the track body 31b and ensures the support strength of the track body 31b.

[0092] Specifically, the track support beam 31 serves as the running track of the gantry 401. The track support beam 31 can adopt a box-type structure. Of course, an L-shaped or U-shaped track support beam 31 can also be adopted. The track body 31b is laid on the top beam wall 31a of the track support beam 31. The upper track body 31b is used to support the gantry and guide its wheels to travel. Optionally, a guide rail plate 31d is provided on the outer beam wall 31c of the track support beam 31, that is, the outer beam wall 31c of the track support beam 31 on the side away from the base frame 21 in the width direction of the platform foundation 200a. The gantry 401 also includes a supporting wheel, which rolls with the guide rail plate 31d to ensure that the travel direction of the gantry 401 does not deviate.

[0093] As an optional embodiment, the top beam wall 31a extends beyond the ends of the track body 31b on the same side at both ends of the connection direction to form a top connection area 31a-1. The connection assembly 300 also includes a first transition plate 32, a portion of which is connected to the top connection area 31a-1 of one of the two connected platforms, and a portion of the first transition plate 32 is also connected to the top connection area 31a-1 of the other of the two connected platforms. The first transition plate 32 abuts against the end of the track body 31b on the corresponding side, and a height adjustment member is provided between the first transition plate 32 and the top connection area 31a-1 in the height direction. The height adjustment member can be a plurality of gaskets, and the number of gaskets is adjusted as needed.

[0094] In this solution, in order to compensate for the processing error of the platform foundation 200a, the track bodies 31b of the two platform foundations 200a will be slightly misaligned in the height direction during the adjustment of the support surface 28. In order to avoid these misalignments from hindering the movement of the gantry 401 or causing bumps during the movement of the gantry 401. By setting the first transition plate 32 and the height adjustment member, the track bodies 31b located on the same side can be aligned and connected. At the same time, a positioning connection hole is also opened in the top connection area 31a-1 to facilitate the installation of the first transition plate 32. The connection hole can be a long waist hole, and the long axis of the waist hole extends in the same direction as the track body 31b, thereby also compensating for the processing errors of the two adjacent track bodies 31b in their extension direction.

[0095] Optionally, the guide rail 31d provided on the outer beam wall 31c is retracted inwardly of the outer beam wall 31c at both ends in the connection direction, and the portion of the outer beam wall 31c that exceeds the guide rail 31d in the connection direction is the side connection area 31c-1. A second transition plate 33 is also included, and the second transition plate 33 is connected to the corresponding side connection area 31c-1; the second transition plate 33 is also provided with a connection hole, which is a long waist hole, and the long axis of the long waist hole extends in the height direction, so as to make up for the height difference of the guide rail 31d, so that the guide rail 31d has a smooth transition.

[0096] In order to adjust the error in the width direction of the platform foundation 200a, shims may be provided between the outer beam wall 31c and the guide rail plate 31d, and the error may be compensated by adjusting the number of shims.

[0097] Of course, the long axis of the long waist hole can also extend in the horizontal direction, that is, extend in the same direction as the guide rail plate 31d. Those skilled in the art can choose by themselves, and the above scheme and other optional schemes all fall within the protection scope of this application.

[0098] The first transition plate 32 and the height adjustment member work together to enable the track bodies 31b belonging to two different platform foundations 200a to form a smooth transition, thereby compensating for machining errors and reducing the machining accuracy of the platform foundation 200a during the actual assembly process.

[0099] In the above-mentioned embodiment, as a more specific optional solution, in the height direction, the running track 301 is located at the lower side of the end supporting beam 22, that is, at the side of the end supporting beam 22 away from the panel 23; at the same time, the two ends of the guide rail plate 31d and the track body 31b in the connection direction are aligned, and both ends are aligned with the two ends of the frame body 21a. The top connection area 31a-1 and the side connection area 31c-1 extend beyond the outside of the frame body 21a in the connection direction, but are retracted to the outermost position of the end supporting beam 22. At the same time, it is ensured that the top connection areas 31a-1 of the two connected track support beams 31 are spaced apart in the connection direction. In the connection direction, the sum of the sizes of the two connected top connection areas 31a-1 is smaller than the size of the end supporting beam 22 in the connection direction. At the same time, in the two overlapping platform foundations 200a, the edge of one track body 31b is aligned with the side wall (inner end wall 22b) of the end supporting beam 22 connected to the frame body 21a, and the edge of the other track body 31b is aligned with the side wall (outer end wall 22a) of the same end supporting beam 22 away from the frame body 21a.

[0100] In other embodiments, each platform foundation 200a further includes a shielding portion 23b, which is vertically opposite to the top beam wall 31a. The shielding portion 23b and the top beam wall 31a are used to accommodate the wheel body of the gantry 401. The walking track 301 is located directly below the shielding portion 23b, and does not exceed the outermost side of the shielding portion 23b in the width direction of the platform foundation 200a. The shielding portion 23b is used to limit the wheel body of the gantry 401 in the height direction, and a relatively concave space is formed on the side of the platform foundation 200a in the width direction relative to the platform foundation 200a. The wheel body of the gantry 401 and the track body 31b are arranged in the concave space, thereby effectively protecting the wheel body and the track body 31b; in addition, the problem of the external running track occupying the outer edge working site can be effectively solved.

[0101] Specifically, in the width direction of the platform foundation 200a, both sides of the panel 23 exceed the base frame 21 on the corresponding side. The shielding portion 23b is located at the portion of the panel 23 that exceeds the base frame 21 in the width direction of the platform foundation 200a. The panel 23 as the shielding portion 23b plays a protective function for the wheel body and the track body 31b.

[0102] As a more specific embodiment, the workpiece 1 to be processed is the side wall of a railway freight car, and the side wall is a straight wall plate column structure. According to the straight wall plate column structure, the length of the side wall mainly varies in the range of 10m to 18m, and the width varies in the range of 1.5m to 2.9m, so the size of the panel 23 of the platform foundation 200a is designed to be 4.5m×3.5m (length×width), and positioning and mounting holes are evenly distributed around the panel 23, and walking tracks 301 are set on both sides. Other processing components 400 with extended functions, such as positioning components, clamping components, press seam gantry and gantry welding robots, can be quickly installed and adjusted according to production needs. Therefore, the production line 2 composed of the platform foundation 200a can effectively adapt to the production of side walls of various models, and its efficient expansion ability and adaptability are reflected. Of course, in addition to processing the side wall, it is also suitable for processing other parts to be processed. It can be understood that the connection direction in this embodiment can be the extension direction of the assembly line in the figure, and of course, it can also be connected in a direction perpendicular to the assembly line.

[0103] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A welding production line, characterized in that: It includes a processing platform structure distributed along the extension direction of the assembly welding production line and a conveying component capable of switching between a transporting state and a standby state; The conveying assembly includes a roller device and a pulling device, wherein the pulling device is used to pull the workpiece to be processed forward along the extension direction, and the roller device can contact the bottom of the workpiece to be processed and form a rolling fit; The roller device is arranged in the processing platform structure and can move vertically upward and downward. In the transportation condition, the roller device moves up to the upper side of the processing platform structure and can contact the workpiece to be processed; in the standby condition, the roller device is separated from the workpiece to be processed and falls back to the inside of the processing platform.

2. The welding production line according to claim 1, characterized in that: The processing platform structure is provided with a mounting groove, the mounting groove extends in the same direction as the assembly welding production line, and the mounting groove is used to accommodate at least a part of the pulling device.

3. The assembly welding production line according to claim 2, characterized in that: Each of the roller devices includes two roller groups, and each of the roller groups includes at least one roller wheel; the two roller groups are arranged relatively to each other along the width direction of the assembly welding production line.

4. The assembly welding production line according to claim 3, characterized in that: The mounting groove is located between the two roller groups in the width direction of the assembly welding line.

5. The assembly welding production line according to claim 4, characterized in that: The roller device comprises a driving part and a conversion member; the two roller groups are both fixed to the conversion member, and the driving part is transmission-connected with the conversion member.

6. The assembly welding production line according to claim 5, characterized in that: The middle part of the adapter is concave to form a concave section, and the two sides are turned outward and extend in a horizontal direction away from each other to form a flange; the roller group is fixed to the concave section, and the driving part is two lifting cylinders, which are arranged on the lower side of the flange.

7. The assembly welding production line according to claim 6, characterized in that: The concave section is located at the lower part of the mounting groove in the vertical direction.

8. The assembly welding production line according to any one of claims 2 to 7, characterized in that: The pulling device comprises a driving chain assembly, wherein the driving chain assembly comprises a sprocket driving end, a sprocket driven end, and a chain wound around the sprocket driving end and the sprocket driven end, and the chain is arranged in the mounting groove.

9. The assembly welding production line according to claim 8, characterized in that: The pulling device further includes a pulling vehicle and a connecting portion, the mounting groove cooperates with the guide of the pulling vehicle, and one end of the connecting portion is connected to the workpiece to be processed in both the transporting condition and the standby condition; The pulling trolley is provided with a vertical slide rail, and the other end of the connecting portion is connected to the pulling trolley and slidably cooperates with the vertical slide rail.

10. The assembly welding production line according to claim 9, characterized in that: The processing platform structure is an integrated structure formed by detachably splicing a number of platform foundations in sequence; each of the platform foundations is provided with at least one of the roller devices; the installation groove includes a number of groove sections extending along the assembly welding production line, and each of the platform foundations is provided with the groove sections.

11. The assembly welding production line according to claim 10, characterized in that: One of the sprocket driving end and the sprocket driven end is fixed to the starting end of the assembly welding production line, and the other is fixed to the terminal end of the assembly welding production line.

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