U rib plate unit production line

Abstract

The invention relates to the technical field of U rib plate production, in particular to a U rib plate unit production line. The U rib plate unit production line comprises a grinding machine, an external welding machine, an assembling machine, a straightening machine and a lifting roller conveying system. The grinding machine, the assembling machine, the external welding machine and the straightening machine are sequentially connected through the lifting roller conveying system. The lifting roller conveying system is directly connected with a grinding machine, an assembling machine, an external welding machine, a straightening machine and other process equipment, continuous transfer among multiple equipment is achieved, dependence on hoisting equipment is avoided, hooking, unhooking and waiting time consumed by hoisting are omitted, the process connection duration is shortened, and the production circulation efficiency of the U rib plate unit is improved. According to the technical scheme, potential safety hazards such as workpiece falling and collision are avoided, the transfer process is stable and controllable, the lifting operation experience of operators is not needed, the skill threshold is lowered, meanwhile, the stability and repeatability of procedure transfer are improved, and the operation efficiency and safety of a production line are integrally optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of U-ribbed slab production, in particular to a U-ribbed slab unit production line. BACKGROUND

[0002] The existing U-ribbed slab unit of a steel bridge is mainly transported and adjusted in position by hoisting the U-ribbed slab unit through large hoisting equipment.

[0003] The U-ribbed slab unit is transported by hoisting equipment, which needs to occupy the hoisting equipment for a long time, is limited by the hoisting equipment, occupies the hoisting process for a long time, and has safety hazards. Meanwhile, the position adjustment using hoisting equipment has low precision and has high requirements for the operation experience of the operator. SUMMARY

[0004] The purpose of the present application is to provide a U-ribbed slab unit production line.

[0005] The present application provides a U-ribbed slab unit production line, which comprises a grinding machine, an external welding machine, an assembly machine, a correcting machine and a lifting roller conveying system. The grinding machine, the assembly machine, the external welding machine and the correcting machine are connected in sequence through the lifting roller conveying system.

[0006] In an optional embodiment, an internal welding machine is further included. The internal welding machine receives the accessories transmitted by the assembly machine through a roller conveyor, and after internal welding is completed, the accessories are conveyed to the external welding machine through the roller conveyor.

[0007] In an optional embodiment, a transverse conveying machine is further included. The grinding machine and the assembly machine are arranged as a first production line, and the internal welding machine, the external welding machine and the correcting machine are arranged as a second production line. The first production line and the second production line are connected through the transverse conveying machine, and the connection position of the transverse conveying machine with the second production line is located between the internal welding machine and the external welding machine.

[0008] In an optional embodiment, the lifting roller conveying system comprises a plurality of spliced roller lifting platforms. The roller lifting platform comprises a platform body, a roller lifting assembly, a support structure and a unified control unit. The roller lifting assembly is arranged on the platform body through the support structure and forms a lifting cooperation with the platform body to carry and convey workpieces. The unified control unit is respectively connected with the roller lifting assembly and the support structure in signal connection, and can control the lifting and conveying actions of the roller lifting assembly and the support state of the support structure.

[0009] In an optional embodiment, the roller lifting assembly comprises a rotating mechanism, a lifting mechanism and a roller assembly; The roller assembly is arranged on the rotating mechanism, and the rotating mechanism is arranged on the lifting mechanism.

[0010] In an optional embodiment, the lifting mechanism comprises a lifting power device, a guide mechanism, a lifting base and a lifting top plate; The rotating mechanism is arranged on the lifting top plate; The lifting power device is arranged on the lifting base, and the lifting power device is connected to the lower side of the lifting top plate, capable of providing power and support for the lifting of the lifting top plate; The guide mechanism is connected to the lifting top plate and the lifting base.

[0011] In an optional embodiment, the rotating mechanism comprises a rotating base, an arc-shaped rack, a driving gear and a rotating power device; The rotating power device is fixedly arranged on the lifting top plate; The rotating base is rotationally arranged on the lifting top plate, and the arc-shaped rack is fixedly arranged on the side wall of the rotating base; The rotating power device is connected to the driving gear, capable of driving the driving gear to rotate; The driving gear is engaged with the arc-shaped rack.

[0012] In an optional embodiment, the roller assembly comprises a roller base, a roller body, a roller shaft and a roller power device; The roller base is arranged on the rotating base; The roller body is rotationally connected to the roller base through the roller shaft; The roller power device is arranged on the roller base and connected to the roller shaft or the roller body, and the roller power device is capable of driving the roller body to rotate.

[0013] In an optional embodiment, the U-rib plate unit production line further comprises a limiting device; The limiting device comprises a limiting block; The limiting block is arranged on the lifting top plate and located at both ends of the rotation track of the arc-shaped rack, capable of limiting the maximum rotation angle of both ends of the arc-shaped rack.

[0014] In an optional embodiment, the support structure comprises a hanging support plate, a connecting column and a bearing seat; The connecting column is vertically arranged inside the platform body, the top end of the connecting column is fixedly connected with the top frame of the platform body, and the bottom end of the connecting column is fixedly connected with the hanging support plate. The roller lifting assembly is arranged on the hanging support plate and can be extended out of the opening on the platform body.

[0015] The beneficial effects of the present application are: By directly connecting the polishing machine, assembly machine, external welding machine, correcting machine and other process equipment through the lifting roller conveying system, continuous transfer between multiple devices is realized, which not only eliminates the dependence on lifting equipment and avoids occupying lifting equipment resources, but also avoids the production line being limited by lifting equipment scheduling, greatly improves the overall equipment utilization, saves the hooking, unhooking and waiting time of lifting, shortens the process connection time, and improves the production and circulation efficiency of the U rib plate unit. At the same time, the stable roller conveying replaces high-altitude heavy lifting, avoids safety hazards such as workpiece falling and collision, and the transfer process is stable and controllable, without relying on the lifting operation experience of the operator, which reduces the skill threshold and improves the stability and repeatability of the process transfer, and optimizes the operation efficiency and safety of the production line as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0017] Figure 1 The structure schematic diagram of the U rib plate unit production line provided by the present application is shown in the figure. Figure 2 The structure schematic diagram of the lifting roller conveying system of the U rib plate unit production line provided by the present application is shown in the figure. Figure 3 The structure schematic diagram of the roller lifting platform of the U rib plate unit production line provided by the present application is shown in the figure. Figure 4 The front view of the roller lifting assembly of the U rib plate unit production line provided by the present application is shown in the figure. Figure 5 The structure schematic diagram of the roller lifting assembly of the U rib plate unit production line provided by the present application is shown in the figure. Figure 6 The structure schematic diagram of the support structure of the U rib plate unit production line provided by the present application is shown in the figure. Figure 7 The structure schematic diagram of the support structure of the U rib plate unit production line provided by the present application is shown in the figure.

[0018] Icon: 1 - polishing machine; 2 - lifting roller conveying system; 3 - transverse conveyor; 4 - assembling machine; 5 - outer welding machine; 6 - inner welding machine; 7 - slag turning machine; 8 - straightening machine; 9 - roller lifting platform; 10 - platform body; 11 - roller lifting assembly; 12 - roller assembly; 13 - rotating mechanism; 14 - lifting mechanism; 15 - roller body; 16 - roller shaft; 17 - roller base; 18 - roller power device; 19 - rotating base; 20 - lifting top plate; 21 - arc-shaped rack; 22 - driving gear; 23 - rotating power device; 24 - limiting block; 25 - proximity switch; 26 - lifting power device; 27 - suspension support plate; 28 - connecting column. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0021] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0025] The embodiments of the present application will be described in detail below. Figures 1-7 The embodiments of the present application will be described in detail below.

[0026] The present application provides a U-rib plate unit production line, as shown in the figure, comprising a grinding machine 1, an outer welding machine 5, an assembly machine 4, a straightening machine 8 and a lifting roller conveying system 2; the grinding machine 1, the assembly machine 4, the outer welding machine 5 and the straightening machine 8 are connected in sequence through the lifting roller conveying system 2. Figure 1

[0027] In this embodiment, the core structure of the U-rib plate unit production line is composed of the grinding machine 1, the outer welding machine 5, the assembly machine 4, the straightening machine 8 and the lifting roller conveying system 2, and the grinding machine 1, the assembly machine 4, the outer welding machine 5 and the straightening machine 8 are connected through the lifting roller conveying system 2 to realize the transportation of the workpiece.

[0028] Among them, the grinding machine 1 is used as a workpiece pretreatment device, and its output end is connected with the starting end of the lifting roller conveying system 2; the conveying path of the lifting roller conveying system 2 passes through the workstations of the assembly machine 4 and the outer welding machine 5 in sequence, and finally connects to the input end of the straightening machine 8. The workstation height of each process equipment is adapted to the conveying plane of the lifting roller conveying system 2, forming a continuous transfer channel without additional intermediate transfer structure.

[0029] Specifically, in this embodiment, the lifting roller conveying system 2 is used to realize the process connection and continuous transfer of the whole process of the U-rib plate unit production.

[0030] ​After the workpiece surface is polished by the polishing machine 1, the lifting roller conveying system 2 directly receives the workpiece and conveys it to the assembling machine 4. After the assembling machine 4 assembles the U rib and the base plate, the conveying system transfers the assembled part to the external welding machine 5 for external welding. After welding, the slag is treated by the slag turning machine 7, and then conveyed to the straightening machine 8 for welding deformation correction. The whole process does not need to be assisted by lifting equipment, and realizes the closed-loop circulation function of "pretreatment-assembly-external welding-correction".

[0031] In the embodiment, the lifting roller conveying system 2 replaces the traditional lifting transfer, and the continuous conveying characteristics of the lifting roller conveying system 2 break the spatial isolation of each process equipment. The lifting roller conveying system 2 realizes the linear movement of the workpiece by the rotation of the roller, and adapts to the height of the work station of different equipment by the lifting characteristics of the roller, avoiding the feeding and discharging jam in the workpiece transfer process. The core logic is to connect the dispersed process equipment through a unified transport carrier, so that the workpiece maintains a continuous motion state in the production process, replacing the traditional lifting-holding-lifting intermittent transfer mode.

[0032] In application, the conveying width of the lifting roller conveying system 2 is adjusted according to the size of the U rib plate unit to ensure that the workpiece can be stably carried. After starting the production line, the operator puts the base plate to be processed into the polishing machine 1. The polished base plate is automatically conveyed to the workbench of the assembling machine 4 by the lifting roller conveying system 2. After the assembling machine 4 completes the U rib assembly, the conveying system starts the roller rotation to slowly convey the assembled part to the welding station of the external welding machine 5. After external welding, it is continuously transferred to the straightening machine 8, and the finished product is output at the end of the conveying system. During the whole process, the start and stop of the lifting roller conveying system 2 are linked with the working state of each equipment, ensuring that the workpiece transfer is synchronized with the process processing, without the need for additional lifting equipment.

[0033] In an optional embodiment, an internal welding machine 6 is further included. The internal welding machine 6 receives the assembled part transmitted by the assembling machine 4 through the roller conveying device, and after internal welding, it is conveyed to the external welding machine 5 through the roller conveying device.

[0034] In the embodiment, the internal welding machine 6 is further provided, so that the whole process becomes: polishing machine 1-lifting roller conveying system 2-assembling machine 4-lifting roller conveying system 2-internal welding machine 6-lifting roller conveying system 2-external welding machine 5-lifting roller conveying system 2-straightening machine 8.

[0035] The setting of the internal welding machine 6 can realize the complete welding process of internal welding+external welding when internal welding is needed.

[0036] Specifically, in the embodiment, after the assembly machine 4 completes the assembly of the U-rib and the base plate, the workpiece enters the inner welding machine 6 through the lifting roller conveying system 2, the inner welding machine 6 welds the inner side weld of the U-rib and the base plate; after the inner welding is completed, the workpiece is transferred to the outer welding machine 5 through the lifting roller conveying system 2, the outer welding machine 5 completes the welding of the outer side weld, and finally is conveyed to the straightening machine 8 by the lifting roller conveying system 2.

[0037] In an optional embodiment, the horizontal conveying machine 3 is further included; the polishing machine 1 and the assembly machine 4 are arranged as a first production line, and the inner welding machine 6, the outer welding machine 5 and the straightening machine 8 are arranged as a second production line; the first production line and the second production line are connected through the horizontal conveying machine 3, and the connection position of the horizontal conveying machine 3 with the second production line is located between the inner welding machine 6 and the outer welding machine 5.

[0038] In the embodiment, when the length of the production line is long and the space of the production workshop is insufficient for placement, the single production line is adjusted into two production lines, which are connected through the horizontal conveying machine 3 to realize the movement of the workpiece between the two production lines.

[0039] Specifically, in the embodiment, the first production line is composed of the polishing machine 1 and the assembly machine 4, and the second production line is composed of the inner welding machine 6, the outer welding machine 5 and the straightening machine 8.

[0040] The horizontal conveying machine 3 is horizontally arranged between the two production lines. Specifically, the horizontal conveying machine 3 can be arranged with one end between the polishing machine 1 and the assembly machine 4 of the first production line and the other end between the inner welding machine 6 and the outer welding machine 5; or can be arranged with one end at the output end of the assembly machine 4 and the other end at the input end of the inner welding machine 6, and the connection positions of the two ends can be arranged according to the actual situation on site.

[0041] In the embodiment, the horizontal conveying machine 3 is the lifting roller conveying system 2 with a turning function.

[0042] In an optional embodiment, the lifting roller conveying system 2 includes a plurality of spliced roller lifting platforms 9; the roller lifting platform 9 includes a platform body 10, a roller lifting assembly 11, a support structure and a unified control unit; the roller lifting assembly 11 is arranged on the platform body 10 through the support structure and forms a lifting cooperation with the platform body 10 to carry and convey the workpiece; the unified control unit is signal connected with the roller lifting assembly 11 and the support structure, and can control the lifting and conveying actions of the roller lifting assembly 11 and the support state of the support structure.

[0043] In the embodiment, the lifting roller conveying system 2 is composed of a plurality of spliced roller lifting platforms 9 and is equipped with a unified control unit. The platform body 10 is of a frame structure, has a workbench plate thereon as the mounting base of all components, the support structure is embedded below the platform body 10 and is connected with the roller lifting assembly 11 at the top, the roller lifting assembly 11 is arranged on the platform body 10 and forms a lifting sliding fit with the platform body 10, and the unified control unit is connected with the roller lifting assembly 11 and the support structure through signal lines to form an integrated structure of “mechanical structure + control module”. The plurality of roller lifting platforms 9 are connected through the end splicing structure and the splicing number can be adjusted according to the length of the production line.

[0044] Specifically, in the embodiment, each roller lifting platform 9 can independently realize the bearing, lifting and conveying of the workpiece, and the plurality of platforms form a conveying channel adapting to the length of the production line after splicing; the support structure provides stable support for the roller lifting assembly 11 to ensure the bearing capacity of the lifting action; and the unified control unit synchronously controls the actions of all the roller lifting platforms 9 to ensure the consistent operation of the spliced conveying system.

[0045] In the embodiment, the lifting roller conveying system 2 is split into a plurality of independent roller lifting platforms 9, each platform has complete lifting, conveying, supporting and limiting functions, length expansion is realized through splicing, and different lengths of production lines are adapted; the cooperative control principle is to collect the running state signals of each platform through the unified control unit, send synchronous control instructions, ensure the lifting height and conveying speed of all platforms are consistent, and avoid workpiece jamming caused by height difference or speed difference at the splicing position.

[0046] In application, the splicing number of the roller lifting platforms 9 is determined according to the total length of the production line, a plurality of platforms are fixedly connected through the splicing flanges at the ends of the platform body 10 to form a complete conveying channel. Then, the running parameters are set through the unified control unit, including the lifting height, conveying speed and limiting distance of different roller lifting platforms 9. When working, the unified control unit sends a start instruction to each roller lifting platform 9, the support structure remains in a stable support state, the roller lifting assembly 11 rises to the preset height according to the instruction, and the workpiece is conveyed to the bearing surface of the roller lifting assembly 11 from the previous process equipment; the roller lifting assembly 11 starts the conveying function to smoothly transfer the workpiece to the next process equipment; when the height of the workpiece needs to be adjusted, the corresponding roller lifting assembly 11 is controlled to rise or fall by the unified control unit to adapt to the height of the work station of different equipment. If a platform fails, the unified control unit can individually shut down the platform, and the remaining platforms continue to work to ensure that the production line is not interrupted.

[0047] In an optional embodiment, the roller lifting assembly 11 comprises a rotating mechanism 13, a lifting mechanism 14 and a roller assembly 12; the roller assembly 12 is arranged on the rotating mechanism 13, and the rotating mechanism 13 is arranged on the lifting mechanism 14.

[0048] In the embodiment, the roller assembly 12 can be used as a bearing and conveying component and directly contacts the workpiece; the rotating mechanism 13 is connected to the lifting mechanism 14 at the bottom and fixed to the roller assembly 12 at the top, forming a rotating support structure, which can drive the roller assembly 12 to rotate and adjust the conveying direction; the lifting mechanism 14 is the lowest power execution component, which is connected to the support structure at the bottom and supports the rotating mechanism 13 and the roller assembly 12 at the top.

[0049] Specifically, in the embodiment, the lifting mechanism 14 provides vertical lifting power to drive the rotating mechanism 13 and the roller assembly 12 to lift synchronously and adapt to the work position height of different equipment; the rotating mechanism 13 drives the roller assembly 12 to rotate around the vertical axis to adjust the angle of the workpiece, such as turning over and turning around during welding; the roller assembly 12 realizes linear conveying of the workpiece through the rotation of the roller body, and the three components work together to complete multi-directional adjustment and transfer of the workpiece without additional equipment.

[0050] In use, the action parameters, including lifting height, rotating angle and conveying speed, are preset by a unified control unit according to process requirements. When the workpiece is conveyed to the bearing surface of the roller assembly 12, if the height needs to be adjusted to adapt to the next equipment, the unified control unit starts the lifting mechanism 14 to drive the rotating mechanism 13 and the roller assembly 12 to lift to the target height; if the workpiece needs to be moved horizontally, the lifting mechanism 14 keeps the height stable, the rotating mechanism 13 is started to drive the roller assembly 12 to rotate to the preset angle, and after the angle adjustment is completed, the roller assembly 12 starts the conveying function to transfer the workpiece to the next process.

[0051] In an optional embodiment, the lifting mechanism 14 comprises a lifting power device 26, a guide mechanism, a lifting base and a lifting top plate 20; the rotating mechanism 13 is arranged on the lifting top plate 20; the lifting power device 26 is arranged on the lifting base, and the lifting power device 26 is connected to the lower side of the lifting top plate 20 to provide power and support for the lifting of the lifting top plate 20; the guide mechanism is connected to the lifting top plate 20 and the lifting base.

[0052] In the embodiment, the lifting base is the mounting base of the lifting mechanism 14, and is fixed on the bearing seat of the support structure; the lifting power device 26 (such as a hydraulic cylinder or a pneumatic cylinder) is vertically fixed on the upper surface of the lifting base, and the output end thereof is fixedly connected with the center position of the lower surface of the lifting top plate 20; the guide mechanism includes guide columns and guide sleeves, the number of the guide mechanisms is multiple, and the multiple guide mechanisms are arranged in a circular array around the lifting power device 26, wherein the guide sleeves are fixed on the lifting base, the top ends of the guide columns are fixedly connected with the lower surface of the lifting top plate 20, and the guide columns and the guide sleeves form a sliding fit; the lifting top plate 20 is a horizontal flat plate structure, and the upper surface thereof is used for mounting the rotating mechanism 13, thereby forming a complete structure of base fixation-power driving-guide limiting-top plate bearing.

[0053] In the embodiment, the lifting power device 26 drives the lifting top plate 20 to lift through telescopic movement, and then drives the rotating mechanism 13 and the roller assembly 12 to synchronously lift, so that the height of the workpiece is adjusted; the guide mechanism limits the movement direction of the lifting top plate 20, so that the lifting action is ensured to be along the vertical direction, and tilting and deviation are avoided; the lifting base provides stable support for the entire mechanism, disperses the acting force of the lifting power device 26, and avoids local stress concentration; the lifting top plate 20 bears the weight of the rotating mechanism 13, and uniformly transmits the lifting power to the rotating mechanism 13 and the roller assembly 12, so that the stability of the lifting action is ensured. The structure solves the problems of unstable lifting and low positioning accuracy of the traditional lifting mechanism 14, and guarantees the posture stability of the workpiece in the lifting process.

[0054] In application, the lifting power device 26 suitable for the weight and lifting height requirement of the workpiece is selected. The detection sensors of the lifting power device 26 and the guide mechanism are connected through the unified control unit, and the lifting height threshold and the lifting speed are preset.

[0055] In work, the unified control unit sends a lifting instruction, the lifting power device 26 is started and pushes the lifting top plate 20 to move upward, the guide columns are synchronously slid along the guide sleeves, so that the lifting top plate 20 is ensured to move horizontally upward; when the detection sensor detects that the lifting top plate 20 reaches the preset height, a signal is sent to the unified control unit, the lifting power device 26 stops acting and keeps the current position, and the rotating mechanism 13 and the roller assembly 12 are stably kept at the target height along with the lifting top plate 20; when descending is required, the lifting power device 26 is reversely acted, drives the lifting top plate 20 to slowly descend, and the guide columns are reset along the guide sleeves.

[0056] It can be understood that in the embodiment, the lifting power device 26 is a hydraulic cylinder or a pneumatic cylinder, but it is not limited to the hydraulic cylinder or the pneumatic cylinder, and it can also be a motor cooperating with a screw rod transmission structure to drive a nut seat to lift, a slide rail limiting the movement direction of the nut seat, and the lifting top plate 20 fixed to the nut seat to drive the roller assembly 12 to lift. That is, as long as the rotating mechanism 13 and the roller assembly 12 can be driven to lift.

[0057] In an optional embodiment, the rotating mechanism 13 comprises a rotating base 19, an arc-shaped rack 21, a driving gear 22, and a rotating power device 23; the rotating power device 23 is fixedly arranged on the lifting top plate 20; the rotating base 19 is rotatably arranged on the lifting top plate 20, and the arc-shaped rack 21 is fixedly arranged on the side wall of the rotating base 19; the rotating power device 23 is connected with the driving gear 22 and can drive the driving gear 22 to rotate; and the driving gear 22 is engaged with the arc-shaped rack 21.

[0058] In the embodiment, the driving gear 22 is connected with the rotating power device 23 through a rotating shaft, and under the action of the rotating power device 23, the driving gear 22 can rotate, and when the driving gear 22 rotates, the arc-shaped rack 21 and the rotating base 19 engaged with the driving gear 22 rotate around the central axis of the rotating base 19, so that the roller assembly 12 on the rotating base 19 is driven to rotate.

[0059] Specifically, in the embodiment, the rotating base 19 is a circular flat plate structure, which is rotatably connected with the upper surface of the lifting top plate 20 through a bearing or a rotating shaft and can rotate around the central axis of the bearing or the rotating shaft; the arc-shaped rack 21 is an arc-shaped strip structure, the arc of which is consistent with the rotating track of the rotating base 19, and the arc-shaped rack 21 is fixed to the outer side wall of the rotating base 19; the rotating power device 23 (such as a servo motor or a stepping motor) is fixed to the upper surface of the lifting top plate 20 through a support and located at the side of the rotating base 19; and the driving gear 22 is fixed to the output shaft of the rotating power device 23 and engaged with the arc-shaped rack 21, forming a structure mode of power source-gear transmission-rotating carrier.

[0060] In use, the length of the arc-shaped rack 21 is set according to the required rotation angle range, the length of the arc-shaped rack 21 determines the rotation angle range, and the rotation angle, rotation speed and start-stop timing are set through the unified control unit. When the workpiece needs to be adjusted in angle, the unified control unit sends a start signal to the rotation power device 23, the rotation power device 23 drives the driving gear 22 to rotate, the driving gear 22 meshes with the arc-shaped rack 21 to drive the rotating base 19 to rotate, the roller assembly 12 rotates synchronously with the rotating base 19, and the workpiece remains stable on the roller assembly 12 and follows the rotation; when the rotation reaches the preset angle, the rotation power device 23 stops and locks to ensure that the workpiece remains at the target angle; after the angle adjustment is completed, the roller assembly 12 starts the conveying function to transfer the workpiece to the next process.

[0061] In an optional embodiment, the roller assembly 12 comprises a roller base 17, a roller body 15, a roller shaft 16 and a roller power device 18; the roller base 17 is arranged on the rotating base 19; the roller body 15 is rotationally connected to the roller base 17 through the roller shaft 16; the roller power device 18 is arranged on the roller base 17 and connected to the roller shaft 16 or the roller body 15, and the roller power device 18 can drive the roller body 15 to rotate.

[0062] In this embodiment, the roller assembly 12 comprises a roller base 17, a roller body 15, a roller shaft 16 and a roller power device 18. The roller base 17 is U-shaped, the bottom of the roller base 17 is fixed to the rotating base 19, the two sides of the roller base 17 extend upward, the upper end of the roller base 17 has a rotating hole, the roller shaft 16 arranged at the two ends of the roller body 15 is inserted into the rotating hole, and a bearing is arranged between the roller shaft 16 and the rotating hole to reduce the rotating friction; at least one of the two rotating holes on the roller base 17 is a through hole, so that the roller power device 18 can be directly or through a transmission structure connected to the roller shaft 16 to drive the roller shaft 16 and the roller body 15 to rotate, thereby driving the U-rib plate above the roller to move correspondingly.

[0063] The roller power device 18 can be a reduction motor or a stepping motor, or a hydraulic cylinder or an air cylinder, etc., as long as it can provide corresponding power for the rotation of the roller body 15. The roller power device 18 is fixed to the end or side of the roller base 17, and the output end of the roller power device 18 is connected to each roller shaft 16 through a transmission structure such as a synchronous belt or a chain.

[0064] In an optional embodiment, the limiting device comprises a limiting block 24; the limiting block 24 is arranged on the lifting top plate 20 and located at the two ends of the rotation track of the arc-shaped rack 21, so as to limit the maximum rotation angle of the two ends of the arc-shaped rack 21.

[0065] In the embodiment, the limiting device can be fixedly arranged on the lifting top plate 20, or can be fixedly arranged on the arc-shaped rack 21.

[0066] Specifically, in the embodiment, when the limiting device is the limiting block 24 fixedly arranged on the lifting top plate 20, the limiting block 24 is fastened on a preset mounting surface of the lifting top plate 20 by a bolt, and the mounting position corresponds to the movement track of the arc-shaped rack 21. When the arc-shaped rack 21 rotates under the action of the driving gear 22, the end portion of the arc-shaped rack 21 abuts against the limiting block 24 after rotating to a set angle, so that the arc-shaped rack 21 cannot continue to rotate, and the limiting in the direction is completed. Similarly, the other end of the arc-shaped rack 21 is provided with another limiting block 24, which limits the other rotating direction of the arc-shaped rack 21, and finally achieves the mechanical limiting in two directions.

[0067] Specifically, in the embodiment, when the limiting device is the limiting block 24 arranged on the arc-shaped rack 21, the limiting block 24 is arranged at the two ends of the arc-shaped rack 21. When the arc-shaped rack 21 rotates to a certain extent under the action of the driving gear 22, the limiting block 24 contacts the driving gear 22. Since the limiting block 24 has no teeth meshing with the driving gear 22, the arc-shaped rack 21 cannot continue to rotate under the action of the driving gear 22, thereby achieving the mechanical limiting function of the arc-shaped rack 21.

[0068] In the embodiment, the limiting device can also be electronic limiting, which includes a distance sensor, a controller, a signal transmission line and an actuator. The distance sensor is fastened on the lifting top plate 20 by a custom bracket bolt, and the mounting position accurately corresponds to the two end limit nodes of the rotating track of the arc-shaped rack 21. The detection direction of the sensor is perpendicular to the outer periphery of the arc-shaped rack 21, so as to ensure the stability of the detection signal.

[0069] The position change of the arc-shaped rack 21 is detected by the distance sensor. When the arc-shaped rack 21 rotates to the detection position of the distance sensor under the action of the driving gear 22, the distance sensor detects that the distance is shortened, so as to determine that the arc-shaped rack 21 reaches the set position, and the rotating power device 23 stops.

[0070] The limiting device can also be a proximity switch 25. When the arc-shaped rack 21 rotates under the driving of the driving gear 22, the proximity switch 25 detects the arc-shaped rack 21 when the arc-shaped rack 21 approaches the proximity switch 25, and transmits a signal to the rotating power device 23, so as to stop the rotating power device 23.

[0071] It can be understood that, in the embodiment, the distance sensor is used to detect the position of the arc-shaped rack 21, but it is not limited to the distance sensor. It can also be other types of sensors, such as a Hall sensor, as long as it can realize the position detection of the arc-shaped rack 21.

[0072] It should also be understood that the limiting device can be mechanical limiting or electronic limiting, which can also be mechanical and electronic limiting at the same time.

[0073] In an optional embodiment, the support structure includes a hanging support plate 27 and a connecting column 28; the connecting column 28 is vertically arranged inside the platform body 10, the top end of the connecting column 28 is fixedly connected with the top frame of the platform body 10, and the bottom end of the connecting column 28 is fixedly connected with the hanging support plate 27; the roller lifting assembly 11 is arranged on the hanging support plate 27 and can be extended out of the opening on the platform body 10.

[0074] In this embodiment, the connecting column 28 is a columnar structure arranged vertically, uniformly distributed along the length direction of the platform body 10, the top end is fixedly connected with the top frame of the platform body 10 or below the table top of the platform body 10 through bolts or welding, and the bottom end is fixedly connected with the upper surface or end of the hanging support plate 27; the hanging support plate 27 is a horizontally arranged flat plate structure, located in the middle upper part inside the platform body 10, parallel to the upper surface of the platform body 10.

[0075] The roller lifting assembly 11 is arranged on the hanging support plate 27, which can support the roller lifting assembly 11 through the hanging support plate 27 to ensure the stability of the roller lifting assembly 11 during lifting.

[0076] The support structure can provide stable support for the roller lifting assembly 11 and realize the hidden-exposed switching of the roller body 15. The connecting column 28 cooperates with the hanging support plate 27 and the bearing seat to form a hanging support structure, which provides rigid support for the lifting base and the entire roller lifting assembly 11, and ensures the structural stability when carrying workpieces; when the roller body 15 is lifted to the highest point, the top is higher than the upper surface of the platform body 10 (exposed state), realizing the carrying and conveying of the workpieces.

[0077] The beneficial effects of the present application are: The lifting roller conveying system 2 directly connects the polishing machine 1, the assembly machine 4, the external welding machine 5, the correcting machine 8 and other process equipment, realizes continuous transfer between multiple devices, breaks away from the dependence on lifting equipment, does not need to occupy lifting equipment resources, avoids the limitation of lifting equipment scheduling on the production line, greatly improves the overall equipment utilization; eliminates the hooking, unhooking and waiting time of lifting, shortens the process connection time, and improves the production and circulation efficiency of the U rib plate unit. At the same time, the stable roller conveying replaces high-altitude heavy lifting, avoids safety hazards such as workpiece falling and collision, and the transfer process is stable and controllable, without relying on the lifting operation experience of the operator, which reduces the skill threshold, improves the stability and repeatability of the process transfer, and optimizes the operation efficiency and safety of the production line as a whole.

[0078] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A U-rib plate unit production line, characterized in that, This includes grinding machines, welding machines, assembly machines, straightening machines, and lifting roller conveyor systems; The grinding machine, the assembly machine, the external welding machine, and the straightening machine are connected in sequence via the lifting roller transport system.

2. The U-rib plate unit production line according to claim 1, characterized in that, This also includes internal welding machines; The inner welding machine receives the parts from the assembly machine via a roller conveyor, and after the inner welding is completed, it is conveyed to the outer welding machine via the roller conveyor.

3. The U-rib plate unit production line according to claim 2, characterized in that, It also includes transverse conveyors; The grinding machine and the assembly machine are configured as the first production line, and the inner welding machine, the outer welding machine and the straightening machine are configured as the second production line; The first production line and the second production line are connected by the transverse conveyor, and the connection point between the transverse conveyor and the second production line is located between the inner welding machine and the outer welding machine.

4. The U-rib plate unit production line according to claim 1, characterized in that, The lifting roller transport system includes multiple spliced ​​roller lifting platforms; The roller lifting platform includes a platform body, roller lifting components, support structure, and unified control unit; The roller lifting assembly is mounted on the platform body through the support structure, forming a liftable fit with the platform body to carry and transport the workpiece. The unified control unit is connected to the roller lifting assembly and the support structure respectively, and can control the lifting and conveying actions of the roller lifting assembly and the support status of the support structure.

5. The U-rib plate unit production line according to claim 4, characterized in that, The roller lifting assembly includes a rotating mechanism, a lifting mechanism, and a roller assembly; The roller assembly is mounted on the rotating mechanism, and the rotating mechanism is mounted on the lifting mechanism.

6. The U-rib plate unit production line according to claim 5, characterized in that, The lifting mechanism includes a lifting power unit, a guide mechanism, a lifting base, and a lifting top plate; The rotating mechanism is disposed on the lifting top plate; The lifting power device is installed on the lifting base and is connected to the lower side of the lifting top plate, which can provide power and support for the lifting of the lifting top plate; The guide mechanism connects the lifting top plate and the lifting base.

7. The U-rib plate unit production line according to claim 6, characterized in that, The rotating mechanism includes a rotating base, an arc rack, a drive gear, and a rotating power device; The rotary power device is fixedly mounted on the lifting top plate; The rotating base is rotatably mounted on the lifting top plate, and the arc-shaped rack is fixedly mounted on the side wall of the rotating base; The rotary power device is connected to the drive gear and can drive the drive gear to rotate; The drive gear meshes with the arc-shaped rack.

8. The U-rib plate unit production line according to claim 7, characterized in that, The roller assembly includes a roller base, a roller body, a roller shaft, and a roller power unit; The roller base is mounted on the rotating base; The roller body is rotatably connected to the roller base via the roller shaft; The roller power unit is mounted on the roller base and connected to the roller shaft or the roller body. The roller power unit can drive the roller body to rotate.

9. The U-rib plate unit production line according to claim 7, characterized in that, It also includes a limiting device; The limiting device includes a limiting block; The limiting block is disposed on the lifting top plate and located at both ends of the rotation trajectory of the arc-shaped rack, which can limit the maximum rotation angle at both ends of the arc-shaped rack.

10. The U-rib plate unit production line according to claim 4, characterized in that, The support structure includes a suspension support plate and a connecting column; The connecting column is vertically installed inside the platform body. The top end of the connecting column is fixedly connected to the top frame of the platform body, and the bottom end of the connecting column is fixedly connected to the suspension support plate. The roller lifting assembly is mounted on the suspension support plate and can extend from the opening on the platform body.

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