Highway box girder web processing production line and production method

Abstract

This invention belongs to the field of box girder reinforcement cage production technology, and discloses a production line and method for processing the web of a highway box girder. The highway box girder web processing production line includes a longitudinal reinforcement transport area, a welding area, and a mesh discharge area arranged sequentially along a first horizontal direction, and a stirrup processing area located laterally to the welding area along a second horizontal direction. The longitudinal reinforcement transport area is used to store longitudinal reinforcement and transport it to a designated position in the welding area, with multiple longitudinal reinforcements arranged in two rows within the welding area. The stirrup processing area is used to bend and process the steel reinforcement raw materials into open stirrups and send the stirrups to the welding station in the welding area. The openings of the stirrups are expanded and converged to weld and position the stirrups and longitudinal reinforcements, and then welded to form a mesh. The mesh discharge area is equipped with a mesh pulling mechanism for step-by-step pulling of the mesh. This invention achieves rapid positioning of the longitudinal reinforcement and stirrups to facilitate welding, improving welding quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of box girder reinforcement cage production technology, and in particular to a production line and method for processing the web of highway box girders. Background Technology

[0002] The box girder reinforcement cage is welded from steel bars, such as... Figure 1 As shown, the box girder reinforcement cage includes multiple longitudinal bars 100 arranged longitudinally and multiple stirrups 200 arranged at intervals along the long axis of the longitudinal bars 100. The multiple longitudinal bars 100 are arranged in two rows, and the stirrups 200 are sleeved on the outside of the two rows of longitudinal bars 100 and welded to each longitudinal bar 100 to form a three-dimensional steel mesh.

[0003] Before welding, the stirrups 200 and longitudinal bars 100 need to be placed one by one, and the welding machine is moved to the welding positions of multiple stirrups 200 in sequence for welding. Due to the large length of the longitudinal bars 100, the equipment occupies a large space, the movement and operation of the welding machine are complicated, the large number of high-voltage lines increases the safety risks, and the longitudinal bars 100 and stirrups 200 are not easy to align accurately. All stirrups 200 must be processed before welding can be carried out in sequence, resulting in low production efficiency of the box girder reinforcement cage and insufficient welding accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a production line and method for processing the web of highway box girders, in order to solve the problems of low production efficiency and insufficient welding quality.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A production line for processing the web of a highway box girder includes a longitudinal reinforcement transport area, a welding area, and a wire mesh discharge area arranged sequentially along a first horizontal direction, as well as a stirrup processing area arranged laterally to the welding area along a second horizontal direction.

[0007] The longitudinal reinforcement transport area is used to store longitudinal reinforcements and transport them to a designated position in the welding area. Multiple longitudinal reinforcements are arranged in two rows, one above the other, in the welding area.

[0008] The stirrup processing area is equipped with a stirrup bending machine and a robot. The stirrup bending machine is used to bend steel reinforcement raw materials into stirrups with openings. The robot includes a robotic arm and a clamping assembly. The clamping assembly is mounted on the robotic arm, and the robotic arm drives the clamping assembly to reciprocate between the stirrup processing area and the welding station in the welding area to transport the stirrups. When clamping the stirrups, the clamping assembly can expand and close the openings of the stirrups to weld and position the stirrups and longitudinal bars. The clamping assembly includes a connecting frame, a material hook, and... An intermediate clamping member is provided, wherein two hoop clamps are rotatably mounted on the connecting frame, and the free ends of the two hoop clamps away from the connecting frame can be rotatably closed to clamp the stirrup, or rotatably opened to release the stirrup or expand the opening of the stirrup; a material hook is rotatably mounted on the hoop clamp at the free end away from the connecting frame, and the material hook can be rotatably hooked to or released from the stirrup; the intermediate clamping member is provided on the connecting frame and located between the two hoop clamps, and the intermediate clamping member is used to clamp the short steel bar on the stirrup opposite to the opening;

[0009] The welding area is equipped with a welding device, which is located at the welding station. The welding device is used to weld the longitudinal bars and stirrups located at the welding station to form a mesh.

[0010] The mesh discharge area is equipped with a mesh pulling mechanism, which is used to pull the mesh in a stepping manner.

[0011] In some embodiments, the clamp assembly further includes:

[0012] The first drive assembly has two components, and the output ends of the two first drive assemblies are disposed opposite to each other on the connecting frame.

[0013] The linkage frame is provided in two parts. One end of each linkage frame is rotatably connected to the output end of the first drive component, and the other end of each linkage frame is rotatably mounted on the connecting frame. The clamping frame is fixedly mounted on the linkage frame. When the output end of the first drive component extends or retracts, it can drive the linkage frame to rotate relative to the connecting frame, thereby driving the clamping frame to rotate.

[0014] In some embodiments, the intermediate clamping member includes a clamping cylinder, which is fixedly mounted on the connecting frame, and the output end of the clamping cylinder is provided with a jaw to clamp the stirrup.

[0015] In some embodiments, the clamp assembly further includes:

[0016] A second drive assembly is disposed on the clamp frame;

[0017] A clamping swing shaft is rotatably mounted on the clamping frame. One end of the clamping swing shaft is connected to the output end of the second drive assembly, and the other end of the clamping swing shaft is connected to the material hook.

[0018] The second drive component is used to drive the clamp swing shaft to rotate so as to drive the material hook to rotate.

[0019] In some embodiments, the second driving component includes:

[0020] A clamping cylinder, wherein the clamping cylinder is mounted on the clamping frame;

[0021] A rack, wherein the rack is disposed at the output end of the clamping cylinder;

[0022] The gear is coaxially and fixedly connected to the clamp swing shaft, and the gear meshes with the rack.

[0023] In some embodiments, the welding apparatus includes a frame and two sets of welding assemblies. The frame includes an upper frame and a lower frame, which are fixedly connected by a column. The two sets of welding assemblies are symmetrically arranged on the upper frame and the lower frame, and each set of welding assemblies includes:

[0024] Two transformer assemblies, both of which are fixed to the upper frame or the lower frame;

[0025] Two welding electrode moving assemblies are slidably disposed on the upper frame or the lower frame, with the sliding direction along the arrangement direction of the plurality of longitudinal ribs; each welding electrode moving assembly includes two welding electrodes, which are respectively electrically connected to the positive and negative terminals of a transformer assembly. During welding, one of the two welding electrodes is used to press a longitudinal rib, and the other is used to press the stirrup at the corresponding position to form a current loop.

[0026] Multiple fixed electrode assemblies are disposed on the upper frame or the lower frame and are disposed corresponding to the multiple longitudinal ribs.

[0027] In some embodiments, the welding electrode moving assembly includes:

[0028] Two welding cylinders, each of which has an electrode seat at its output end, and a welding electrode on each electrode seat. The end of the welding electrode that presses against the longitudinal rib is provided with a positioning groove.

[0029] The third drive assembly has a slider that is slidably mounted on the upper frame or the lower frame at its output end, and both welding cylinders are fixed on the slider.

[0030] In some embodiments, the welding apparatus further includes two sets of wire threading tube assemblies, with the two rows of longitudinal ribs respectively threaded through the two sets of wire threading tube assemblies. The two sets of wire threading tube assemblies are respectively disposed on the upper frame and the lower frame, and the position of at least one set of wire threading tube assemblies along the arrangement direction of the longitudinal ribs is adjustable.

[0031] This invention also provides a method for processing and producing the web of a highway box girder. Using the highway box girder web processing production line provided by this invention, the method for processing and producing the web of a highway box girder includes the following steps:

[0032] S1, the longitudinal reinforcement transport area transports multiple longitudinal reinforcements to a designated position in the welding area, and the multiple longitudinal reinforcements are arranged in two rows in the welding area; the spacing between the two rows of longitudinal reinforcements along the arrangement direction of the longitudinal reinforcements is adjusted;

[0033] S2, the bending machine bends the steel bar raw material into a stirrup with an opening; the robot clamps the stirrup and expands the opening of the stirrup;

[0034] S3, the robot places the stirrups onto the two rows of longitudinal bars and closes the openings of the stirrups, and the stirrups and longitudinal bars are welded and positioned.

[0035] S4, the welding device presses and fixes the stirrups and the longitudinal bars, and the robot releases the stirrups;

[0036] S5, the welding device is powered on and welds the stirrups and the longitudinal bars;

[0037] S6, After welding is completed, the mesh pulling mechanism pulls the welded longitudinal reinforcement, and the pulling distance is the distance between two adjacent stirrups;

[0038] S7, return to step S2, until the required number of stirrups are welded onto the longitudinal rib, the mesh pulling mechanism pulls the longitudinal rib to the unloading position.

[0039] The beneficial effects of this invention are:

[0040] The highway box girder web processing production line provided by this invention sets the stirrup processing area to the side of the welding area. A robot can clamp and deliver the stirrups to the welding area after bending. The robot has a short movement path, saving equipment space. The robot includes a clamping assembly that can expand the opening of the stirrup to facilitate the transverse placement of multiple longitudinal bars along the longitudinal bars. It can also close the opening of the stirrup after the longitudinal bars are placed to position the stirrup and longitudinal bars for welding, achieving rapid positioning of the longitudinal bars and stirrups for welding and improving welding quality. During the welding process, the stirrup bending machine can perform bending operations simultaneously, which facilitates the rational optimization of the bending and welding processes to improve production efficiency. The welding device is set at the welding station, avoiding large-distance movement of the welding device as a whole, which helps to improve welding quality and welding equipment stability, reduces the laying of power cables, and improves on-site equipment safety. Attached Figure Description

[0041] Figure 1 This is a structural schematic diagram of the steel reinforcement cage for the web of a highway box girder, which is involved in this invention.

[0042] Figure 2 This is a schematic diagram of the production line for processing the web of a highway box girder provided in an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the robot holding stirrups in the highway box girder web processing production line provided in this embodiment of the invention;

[0044] Figure 4 This is a schematic diagram of the structure of the robot expanding the opening of the stirrup in the highway box girder web processing production line provided in an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the structure of the highway box girder web processing production line provided in this embodiment of the invention, in which the robot puts the stirrups into the longitudinal bars and then closes the opening at the welding station;

[0046] Figure 6 This is a schematic diagram of the clamping assembly of the robot in the highway box girder web processing production line provided in this embodiment of the invention;

[0047] Figure 7 This is a schematic diagram of the clamping frame in the clamping assembly of the robot in the highway box girder web processing production line provided in this embodiment of the invention;

[0048] Figure 8 This is a partial front view of the welding device in the highway box girder web processing production line provided in this embodiment of the invention;

[0049] Figure 9 This is a front view of two welding components in the highway box girder web processing production line provided in this embodiment of the invention;

[0050] Figure 10 This is a side view of the welding device in the highway box girder web processing production line provided in this embodiment of the invention;

[0051] Figure 11 This is a partial structural schematic diagram of the welding electrode moving assembly in the highway box girder web processing production line provided in this embodiment of the invention.

[0052] In the picture:

[0053] 100, longitudinal reinforcement; 200, stirrups; 201, short reinforcement bars; 202, long reinforcement bars;

[0054] A. Longitudinal reinforcement transport area; B. Stirrup processing area; C. Welding area; D. Mesh unloading area;

[0055] 1. Hoop bending machine;

[0056] 2. Robot; 21. Clamping assembly; 211. Connecting frame; 212. Clamping frame; 213. Material hook; 214. Intermediate clamping component; 215. First drive assembly; 216. Linkage frame; 2161. Rotating shaft; 217. Second drive assembly; 2171. Clamping cylinder; 2172. Rack; 2173. Gear; 2174. Clamping cylinder seat; 218. Clamping swing shaft; 2181. Clamping bushing; 22. Base; 23. Robotic arm;

[0057] 3. Welding equipment; 31. Frame; 311. Upper frame; 312. Lower frame; 313. Column;

[0058] 32. Transformer assembly; 321. Transformer; 322. Angle plate; 323. Transformer plate; 324. Transformer electrode assembly; 325. Flexible conductor;

[0059] 33. Welding electrode moving assembly; 331. Welding electrode; 332. Welding cylinder; 333. Electrode holder; 334. Connecting plate; 335. Slider; 336. Third drive assembly;

[0060] 34. Fixed electrode assembly;

[0061] 35. Threading tube assembly; 351. Fourth drive assembly; 352. Lead screw;

[0062] 4. Netting mechanism. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0067] This invention provides a production line and method for processing the web of a highway box girder, used to process... Figure 1 The longitudinal reinforcement 100 and stirrup 200 shown are welded to form the web reinforcement cage of the highway box girder, thereby improving production efficiency and quality.

[0068] like Figures 2-11The highway box girder web processing production line provided in this embodiment of the invention includes a longitudinal reinforcement transport area A, a welding area C, and a wire mesh discharge area D arranged sequentially along a first horizontal direction (X direction), and a stirrup processing area B located laterally to the welding area C along a second horizontal direction (Y direction). The longitudinal reinforcement transport area A is used to store longitudinal reinforcement 100 and transport the longitudinal reinforcement 100 to a designated position in the welding area C. Multiple longitudinal reinforcement 100 are arranged in two rows, one above the other, within the welding area C. The stirrup processing area B is equipped with a stirrup bending machine 1 and a robot 2. The stirrup bending machine 1 is used to bend the steel reinforcement raw materials into stirrups 200 with openings. The robot 2... The robot 2 is capable of clamping the stirrups 200 and delivering them to the welding station in welding area C. When clamping the stirrups 200, the robot 2 can expand and close the opening of the stirrups 200 to weld and position the stirrups 200 and the longitudinal bars 100. Welding area C is equipped with a welding device 3, which is located at the welding station. The welding device 3 is used to weld the longitudinal bars 100 and stirrups 200 located at the welding station to form a mesh. The mesh discharge area D is equipped with a mesh pulling mechanism 4, which is used to step and pull the mesh. During the welding process, the step distance is the distance between two adjacent stirrups 200.

[0069] like Figure 2 As shown, the overall length of the highway box girder web processing production line provided by this invention along the X direction is the sum of the lengths of two longitudinal reinforcement bars 100. The stirrup processing area B is located to the side of the welding area C and is automatically loaded, straightened, and bent using a large-scale loading frame. The stirrup processing area B and the longitudinal reinforcement bar 100 loading, straightening, and cutting production line are located on the same side, which can save the overall space occupied by the equipment. The transfer of the stirrup bars 200 to the welding area C is performed by a robot 2 located at the front end of the stirrup processing area B. The robot 2 can clamp and deliver the bent stirrup bars 200 to the welding area C. The robot 2 has a short movement path, saving the space occupied by the equipment. The robot 2 can also expand the opening of the stirrup bars 200 to facilitate the transverse placement of multiple longitudinal reinforcement bars 100 along the longitudinal reinforcement bars 100. It can also close the opening of the stirrup bars 200 after the longitudinal reinforcement bars 100 are placed on the stirrup bars 200 to weld and position the stirrup bars 200 and the longitudinal reinforcement bars 100, thereby achieving rapid positioning of the longitudinal reinforcement bars 100 and the stirrup bars 200 for welding and improving welding quality. During the welding process, the hoop bending machine 1 can perform hoop bending operations simultaneously, realizing the simultaneous processing of hoop bending and welding of the hoop 200. The hoop bending and welding of the hoop 200 are optimized synchronously, and the feeding of the hoop 200 and the pulling of the mesh can be optimized synchronously. This facilitates the rational optimization of the hoop bending and welding processes to improve production efficiency. The welding device 3 is set at the welding station, avoiding the long-distance movement of the welding electrode 331 of the welding device 3. This helps to improve welding quality and the stability of the welding equipment, reduce the laying of power cables, and improve the safety of on-site equipment.

[0070] In some embodiments, the robot 2 includes a clamping assembly 21, which includes a connecting frame 211, a material hook 213, and an intermediate clamping member 214. Two clamping frames 212 are rotatably disposed on the connecting frame 211. The free ends of the two clamping frames 212 away from the connecting frame 211 can be rotatably closed to clamp the stirrup 200, or rotatably opened to release the stirrup 200 or expand the opening of the stirrup 200. The material hook 213 is rotatably disposed on the free end of the clamping frame 212 away from the connecting frame 211. The material hook 213 can be rotatably hooked to or released from the stirrup 200. The intermediate clamping member 214 is disposed on the connecting frame 211 and located between the two clamping frames 212. The intermediate clamping member 214 is used to clamp the short steel bar 201 on the stirrup 200 that is opposite to the opening.

[0071] like Figure 3 As shown, robot 2 includes a base 22 and a multi-degree-of-freedom robotic arm 23. The robotic arm 23 is mounted on the base 22, and a clamping assembly 21 is mounted on the robotic arm 23. The robotic arm 23 drives the clamping assembly 21 to reciprocate between the stirrup processing area B and the welding area C to transport the stirrups 200. The bending machine 1 bends the steel reinforcement material to form stirrups 200. During the process of clamping the stirrup 200 and transferring it to the welding area C, the clamping assembly 21 can expand the opening of the stirrup 200, such as... Figure 4 As shown, after the opening of the stirrup 200 expands, multiple longitudinal bars 100 can be simultaneously fitted along the transverse position of the longitudinal bars 100. After positioning, the clamping assembly 21 closes the opening of the stirrup 200 again. Figure 5 The shown configuration allows for the positioning of the stirrups 200 and longitudinal reinforcement 100, facilitating welding. (As shown...) Figure 6 The connecting frame 211 of the clamping assembly 21 is fixedly mounted on the robotic arm 23. Two clamping brackets 212 are rotatably mounted on the end of the connecting frame 211 away from the robotic arm 23. The rotation axes of the two clamping brackets 212 are parallel to each other. The two clamping brackets 212 clamp or release the stirrups 200 by rotation. At the same time, when the clamping brackets 212 rotate, they can also expand or close the opening of the stirrups 200. Specifically, in combination with Figure 7When the clamping bracket 212 clamps the stirrup 200, the short steel bars 201 of the stirrup 200 are clamped onto the intermediate clamping member 214. The long steel bars 202 on both sides of the opening of the stirrup 200 are hooked onto two material hooks 213 respectively. The two clamping brackets 212 clamp the two long steel bars 202. When the two clamping brackets 212 rotate away from each other in opposite directions, the material hooks 213 pull the opening-facing portions of the two long steel bars 202 away from each other, causing the opening of the stirrup 200 to expand to a set angle. The size of the opening is larger than the width of the two rows of longitudinal bars 100, thus enabling the two rows of longitudinal bars 100 to be positioned and fed through the opening. The feeding distance is short and the positioning is accurate. The intermediate clamping member 214 includes a clamping cylinder, which is fixedly mounted on the connecting frame 211. The output end of the clamping cylinder has a gripper to clamp the short steel bars 201 of the stirrup 200, facilitating automatic control. Figure 6 As shown, the clamping cylinder is fixed between two clamping frames 212 on the connecting frame 211 to clamp the short steel bar 201, especially to clamp the stirrup 200 when expanding and closing the opening of the stirrup 200.

[0072] In some embodiments, the clamping assembly 21 further includes a first driving assembly 215 and a linkage frame 216. Two first driving assemblies 215 are provided, with their output ends disposed opposite to each other on the connecting frame 211. Two linkage frames 216 are provided, with one end of each linkage frame 216 rotatably connected to the output end of the first driving assembly 215 and the other end of each linkage frame 216 rotatably mounted on the connecting frame 211. The clamping frame 212 is fixedly disposed on the linkage frame 216. When the output end of the first driving assembly 215 extends or retracts, it can drive the linkage frame 216 to rotate relative to the connecting frame 211, thereby driving the clamping frame 212 to rotate.

[0073] like Figure 6As shown, the two first drive components 215 employ two single-outlet cylinders, each connected to a linkage frame 216. The other end of the linkage frame 216 is rotatably connected to the connecting frame 211 via a rotating shaft 2161. In other embodiments, the first drive component 215 may also employ a double-outlet cylinder, with its two output ends connected to the two linkage frames 216 respectively. The two first drive components 215 are synchronously controlled to extend and retract. When the output ends of the two first drive components 215 extend simultaneously, they drive the two linkage frames 216 to rotate around the two rotating shafts 2161 respectively. The two linkage frames 216 drive the free ends of the two clamping frames 212 to rotate and move closer together to clamp the stirrups 200. Conversely, when the output ends of the first drive components 215 retract, the two linkage frames 216 rotate and drive the free ends of the two clamping frames 212 to rotate and open, forming a certain angle. At this time, if the stirrups 200 are released, the material hook 213 is rotated to avoid the stirrups 200, and the middle clamping member 214 releases the stirrups 200. If the opening of the stirrups 200 is expanded, the material hook 213 rotates to hook the two long steel bars 202 of the stirrups 200 and pulls the two long steel bars 202 under the action of the clamping frames 212 to expand the opening and perform a sleeve positioning.

[0074] In some embodiments, the clamping assembly 21 further includes a second driving assembly 217 and a clamping swing shaft 218. The second driving assembly 217 is disposed on the clamping frame 212. The clamping swing shaft 218 is rotatably disposed on the clamping frame 212. One end of the clamping swing shaft 218 is connected to the output end of the second driving assembly 217, and the other end of the clamping swing shaft 218 is connected to the material hook 213. The second driving assembly 217 is used to drive the clamping swing shaft 218 to rotate so as to drive the material hook 213 to rotate.

[0075] like Figure 6 and Figure 7 The clamp swing shaft 218 is arranged along the length of the clamp frame 212 to facilitate the placement of the second drive assembly 217 on one end of the clamp frame 212 facing the linkage frame 216, reducing the weight of the free end of the clamp frame 212 and making it easier to control. The clamp frame 212 includes two interconnected clamp plates (such as angle steel). The included angle between the two clamp plates can limit and clamp the long steel bar 202 of the stirrup 200. A mounting plate is provided on the back of the two clamp plates, and two clamp bushings 2181 are spaced apart on the mounting plate. The clamp swing shaft 218 is rotatably disposed within the clamp bushings 2181. Multiple weight-reducing holes are provided on both the clamp plates and the mounting plate.

[0076] In some embodiments, the second drive assembly 217 includes a clamping cylinder 2171, a rack 2172, and a gear 2173. The clamping cylinder 2171 is mounted on the clamping frame 212; the rack 2172 is mounted on the output end of the clamping cylinder 2171; the gear 2173 is coaxially and fixedly connected to the clamping swing shaft 218, and the gear 2173 meshes with the rack 2172.

[0077] like Figure 6 The clamping cylinder 2171 is fixed to the clamping frame 212 via the clamping cylinder seat 2174. The clamping frame 212 is equipped with a rack seat, and the rack 2172 is slidably disposed within the rack seat. When the clamping cylinder 2171 drives the rack 2172 to move, it drives the gear 2173 to rotate. The gear 2173 drives the clamping swing shaft 218 to rotate, which facilitates the control of the rotation direction of the clamping swing shaft 218, thereby realizing the rotation control of the material hook 213. The two clamping cylinders 2171 on the two clamping frames 212 are synchronously controlled to extend and retract.

[0078] In some embodiments, the welding device 3 includes a frame 31 and two sets of welding components. The frame 31 includes an upper frame 311 and a lower frame 312, which are fixedly connected by a column 313. The two sets of welding components have the same structure and are symmetrically arranged on the upper frame 311 and the lower frame 312. The two sets of welding components simultaneously weld two rows of longitudinal ribs 100.

[0079] Taking one set of welding components mounted on the upper frame 311 as an example, the welding component includes two transformer components 32, two welding electrode moving components 33, and multiple fixed electrode components 34. The two transformer components 32 have the same structure and are both fixed on the upper frame 311. The two welding electrode moving components 33 have the same structure and are slidably mounted on the upper frame 311, with the sliding direction along the arrangement direction of the multiple longitudinal ribs 100. Each welding electrode moving component 33 includes two welding electrodes 331, which are electrically connected to the positive and negative poles of a transformer component 32, respectively. During welding, one of the two welding electrodes 331 is used to press against a longitudinal rib 100, and the other is used to press against the corresponding hoop 200 to form a current loop. The multiple fixed electrode components 34 are mounted on the upper frame 311 or the lower frame 312 and are correspondingly mounted to the multiple longitudinal ribs 100.

[0080] like Figure 8 As shown, the transformer assembly 32 includes a transformer 321, which is mounted on a transformer plate 323 via an angle plate 322. The transformer plate 323 is mounted on an upper frame 311. The transformer plate 323 has elongated holes, the long axis of which runs along the direction of each row of longitudinal ribs 100, used for adjusting the initial installation position of the transformer plate 323 and the upper frame 311. The transformer 321 is equipped with a transformer electrode group 324. The two welding electrodes 331 of each welding electrode moving assembly 33 are respectively connected to the transformer electrode group 324 of the positive and negative terminals of the transformer 321 via flexible wires 325. During welding, if... Figure 9 One welding electrode 331 is provided with a positioning groove and is in direct contact with the longitudinal rib 100, while the other welding electrode 331 is not provided with a positioning groove and is in direct contact with the stirrup 200, thereby forming a circuit. The transformer 321 is started to complete the welding.

[0081] like Figure 9 Two welding electrode moving assemblies 33 are slidably mounted on the upper frame 311. Each welding electrode moving assembly 33 includes two welding electrodes 331. The upper frame 311 has a total of four welding electrodes 331, suitable for welding the upper row of eight longitudinal ribs 100 and the lower row of eight longitudinal ribs 100 to the stirrups 200 respectively in this embodiment. The four welding electrodes 331 are arranged in two groups at intervals. Figure 5 As shown, one set of two welding electrodes 331 is used for welding the four longitudinal ribs 100 numbered 1-4, and another set of two welding electrodes 331 is used for welding the four longitudinal ribs 100 numbered 5-8. The welding electrode moving assembly 33 can weld all eight longitudinal ribs 100 with a single slide, resulting in high welding efficiency. The fixed electrode assembly 34 is used in conjunction with the welding electrodes 331 to support the longitudinal ribs 100 and the stirrups 200 to achieve compression welding and improve welding quality. It can be understood that the fixed electrode assembly 34 has two fixed electrodes, one upper and one lower. Each fixed electrode is fixed on the upper frame 311 and the other lower frame 312, and corresponds to the welding position of the two rows of longitudinal ribs 100, so as to cooperate with multiple welding electrodes 331 for welding.

[0082] In some embodiments, the welding electrode moving assembly 33 includes two welding cylinders 332 and a third drive assembly 336. Each welding cylinder 332 has an electrode seat 333 at its output end, and each electrode seat 333 has a welding electrode 331. The end of the welding electrode 331 that presses the longitudinal rib 100 is provided with a positioning groove. The output end of the third drive assembly 336 is provided with a slider 335 that is slidably mounted on the upper frame 311 or the lower frame 312. Both welding cylinders 332 are fixed on the slider 335.

[0083] like Figure 11 The electrode holder 333 is fixed to the output end of the welding cylinder 332 via a connecting plate 334. The welding cylinder 332 drives the welding motor to move up and down, causing the welding electrode 331 to press the longitudinal rib 100 or the stirrup 200 onto the corresponding fixed electrode for welding. Specifically, when two welding electrodes 331 weld two adjacent longitudinal ribs 100,

[0084] like Figure 10 The third drive assembly 336 uses a synchronous belt assembly to drive the slider 335 to move. The slider 335 moves along the arrangement direction of the multiple longitudinal ribs 100. The welding cylinder 332 is fixed on the slider 335. During the welding process of each stirrup 200, the third drive assembly 336 drives the slider 335 to move once. The welding electrode moving assembly 33 moves as a whole by twice the distance between two adjacent longitudinal ribs 100. The two sets of welding electrode moving assemblies 33 can share the slider 335 and the third drive assembly 336.

[0085] In some embodiments, the welding apparatus 3 further includes two sets of wire threading tube assemblies 35, with two rows of longitudinal ribs 100 respectively threaded into the two sets of wire threading tube assemblies 35. The two sets of wire threading tube assemblies 35 are respectively arranged on the upper frame 311 and the lower frame 312, and the position of at least one set of wire threading tube assemblies 35 along the arrangement direction of the longitudinal ribs 100 is adjustable.

[0086] like Figure 8 As shown, two sets of threading tube assemblies 35 are respectively installed on the upper frame 311 and the lower frame 312. When multiple longitudinal ribs 100 are respectively threaded through the threading tubes of the upper and lower sets of threading tube assemblies 35, the feeding of the longitudinal ribs 100 is completed. Figure 1 As shown, the upper and lower rows of longitudinal ribs 100 are staggered when positioned with the stirrups 200. However, the longitudinal ribs 100 are aligned vertically as they move from the longitudinal rib transport area A to the welding area C. Therefore, the position of one row of longitudinal ribs 100 needs to be adjustable to achieve adjustable vertical staggering. Taking the adjustable position of the upper row of longitudinal ribs 100 as an example, the eight longitudinal ribs 100 in the upper row are respectively threaded into the eight threading tubes of the upper threading tube assembly 35. The upper threading tube assembly 35 includes a fourth drive assembly 351. A lead screw 352 is coaxially connected to the output pulley of the fourth drive assembly 351. Multiple nuts are rotatably mounted on the lead screw 352, and each nut is fixedly connected to a corresponding threading tube. When the fourth drive assembly 351 drives the lead screw 352 to rotate, the multiple nuts move the multiple threading tubes, thereby moving one row of longitudinal ribs 100 a specified distance. The fourth drive assembly 351 can use a synchronous belt assembly for more precise distance control.

[0087] The present invention also provides a method for processing and producing the web of a highway box girder. Using the highway box girder web processing production line provided in the embodiments of the present invention, the method for processing and producing the web of a highway box girder includes the following steps:

[0088] S1, the longitudinal reinforcement transport area A transports multiple longitudinal reinforcements 100 to a designated position in the welding area C. The multiple longitudinal reinforcements 100 are arranged in two rows, one above the other, in the welding area C. The spacing between the two rows of longitudinal reinforcements 100 along the arrangement direction of the longitudinal reinforcements 100 is adjusted.

[0089] Specifically, the steel bar raw material is straightened and cut to form longitudinal bars 100. The longitudinal bars 100 are fed laterally to the longitudinal bar transportation area A. The longitudinal bar transportation area A transports the longitudinal bars 100 along the long axis of the longitudinal bars 100 to the welding area C. The upper row of multiple longitudinal bars 100 are respectively inserted into multiple threading tubes of the upper threading tube assembly 35, and the lower row of multiple longitudinal bars 100 are respectively inserted into multiple threading tubes of the lower threading tube assembly 35. The lateral position of the upper threading tube assembly 35 is adjusted to realize the position adjustment of the two rows of longitudinal bars 100.

[0090] S2, the bending machine 1 bends the steel bar raw material into a stirrup 200 with an opening; the robot 2 clamps the stirrup 200 and expands the opening of the stirrup 200;

[0091] Specifically, while the longitudinal reinforcement 100 is being transported and adjusted, the stirrup processing area B straightens and cuts the steel reinforcement raw materials on the cannon line-laying frame and then bends them into stirrups 200. First, the intermediate clamping component 214 is activated and clamps the short steel reinforcement 201. The first drive component 215 is activated, and its output end retracts to expand the two stirrup clamps 212. After the two stirrup clamps 212 are aligned with the long steel reinforcement 202 of the stirrup 200, the output end of the first drive component 215 extends, and the two stirrup clamps 212 rotate to clamp the long steel reinforcement 202. The second drive component 217 is activated and drives the material hook 213 to hook the two long steel reinforcements 202. The output end of the first drive component 215 retracts again to expand the two stirrup clamps 212, and the material hook 213 drives the two long steel reinforcements 202 to unfold, thus expanding the opening of the stirrup 200.

[0092] S3, Robot 2 places the stirrup 200 onto the two rows of longitudinal bars 100 and closes the opening of the stirrup 200. The stirrup 200 and the longitudinal bars 100 are welded and positioned.

[0093] Specifically, the robotic arm 23 drives the clamping assembly 21 to align with the longitudinal reinforcement 100, so that the stirrup 200 is fitted with multiple longitudinal reinforcements 100; then the output end of the first drive assembly 215 extends again, and the opening of the stirrup 200 closes.

[0094] S4, welding device 3 presses and fixes stirrup 200 and longitudinal bar 100, robot 2 releases stirrup 200;

[0095] Specifically, the welding cylinder 332 drives the welding electrode 331 to move toward the longitudinal rib 100 and the stirrup 200 and presses the longitudinal rib 100 and the stirrup 200 onto the corresponding fixed electrode. The robotic arm 23 drives the clamp 212 to release the stirrup 200 and retract, ready to clamp the next stirrup 200.

[0096] S5, welding device 3 is powered on and welds stirrups 200 and longitudinal bars 100 to form a mesh;

[0097] Welding device 3 completes welding at eight points on the top and bottom at once when powered on. After welding once, welding cylinder 332 is lifted, and third drive component 336 drives welding electrode moving component 33 to move to the next set of welding points. Welding cylinder 332 drives welding electrode 331 to press longitudinal rib 100 and stirrup 200 again. Transformer 321 is restarted and welding is performed again to complete the welding of one stirrup 200 with multiple longitudinal ribs 100, thus obtaining the mesh.

[0098] S6, After welding is completed, the mesh pulling mechanism 4 pulls the welded longitudinal reinforcement 100, and the pulling distance is the distance between two adjacent stirrups 200;

[0099] S7, return to step S2, that is, repeat steps S2-S6 until the required number of stirrups 200 are welded on the longitudinal reinforcement 100, and the web reinforcement cage of the highway box girder is obtained. The mesh pulling mechanism 4 pulls the longitudinal reinforcement 100 to the unloading position.

[0100] The present invention provides a method for processing and producing the web of a highway box girder. The required stirrups 200 are produced in stirrup processing area B. Robot 2 clamps the stirrups 200 and moves them to a designated position for subsequent welding. Welding device 3 welds the longitudinal reinforcement 100 and the stirrups 200. After one stirrup 200 is welded, a mesh pulling mechanism 4 clamps one end of the longitudinal reinforcement 100 and moves the longitudinal reinforcement 100 and the mesh a certain distance. Simultaneously, robot 2 clamps another stirrup 200 and moves it to a designated position for continued positioning and welding. This process is repeated until the welding of the box girder web reinforcement cage is completed. This achieves automated welding production of the highway box girder web reinforcement cage, ensuring accurate alignment of the longitudinal reinforcement 100 and stirrups 200, high welding quality, high welding efficiency, and saving labor and reducing labor intensity.

[0101] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A highway box girder web processing line, characterized in that, It includes a longitudinal reinforcement transport area (A), a welding area (C) and a wire mesh discharge area (D) arranged sequentially along the first horizontal direction, and a stirrup processing area (B) arranged on the side of the welding area (C) along the second horizontal direction; The longitudinal reinforcement transport area (A) is used to store the longitudinal reinforcement (100) and transport the longitudinal reinforcement (100) to a designated position in the welding area (C). The longitudinal reinforcement (100) is arranged in two rows, one above the other, in the welding area (C). The stirrup processing area (B) is equipped with a stirrup bending machine (1) and a robot (2). The stirrup bending machine (1) is used to bend steel bar raw materials into stirrups (200) with openings. The robot (2) includes a robotic arm (23) and a clamping assembly (21). The clamping assembly (21) is mounted on the robotic arm (23). The robotic arm (23) drives the clamping assembly (21) to reciprocate between the stirrup processing area (B) and the welding station of the welding area (C) to transport the stirrups (200). When clamping the stirrups (200), the clamping assembly (21) can expand and close the opening of the stirrups (200) to weld and position the stirrups (200) and the longitudinal bars (100). The clamping assembly (21) includes a connecting frame (211), a material hook (213), and an intermediate clamp. The fastener (214) has two clamping frames (212) rotatably mounted on the connecting frame (211). The free ends of the two clamping frames (212) away from the connecting frame (211) can be rotated to close to clamp the stirrup (200), or rotated to open to release the stirrup (200) or expand the opening of the stirrup (200). The material hook (213) is rotatably mounted on the clamping frame (212) away from the connecting frame (211). The material hook (213) can be rotated to hook the stirrup (200) or release the stirrup (200). The intermediate clamping member (214) is mounted on the connecting frame (211) and located between the two clamping frames (212). The intermediate clamping member (214) is used to clamp the short steel bar (201) on the stirrup (200) that is opposite to the opening. The clamping assembly (21) further includes a second drive assembly (217) and a clamping swing shaft (218). The second drive assembly (217) is disposed on the clamping frame (212). The clamping swing shaft (218) is rotatably disposed on the clamping frame (212). One end of the clamping swing shaft (218) is connected to the output end of the second drive assembly (217), and the other end of the clamping swing shaft (218) is connected to the material hook (213). The second drive assembly (217) is used to drive the clamping swing shaft (218). 218) rotates to drive the material hook (213) to rotate; the second drive assembly (217) includes a clamping cylinder (2171), a rack (2172) and a gear (2173), the clamping cylinder (2171) is mounted on the clamping frame (212); the rack (2172) is mounted on the output end of the clamping cylinder (2171); the gear (2173) is coaxially fixedly connected to the clamping swing shaft (218), and the gear (2173) meshes with the rack (2172); The welding area (C) is equipped with a welding device (3), which is located at the welding station. The welding device (3) is used to weld the longitudinal bar (100) and the stirrup (200) located at the welding station to form a mesh. The mesh discharge area (D) is equipped with a mesh pulling mechanism (4), which is used to pull the mesh in a stepping manner.

2. The highway box girder web line according to claim 1, wherein, The clamp assembly (21) also includes: The first drive assembly (215) is provided in two, and the output ends of the two first drive assemblies (215) are disposed opposite to each other on the connecting frame (211). The linkage frame (216) is provided in two. One end of each linkage frame (216) is rotatably connected to the output end of the first drive component (215), and the other end of each linkage frame (216) is rotatably mounted on the connecting frame (211). The clamping frame (212) is fixedly mounted on the linkage frame (216). When the output end of the first drive component (215) extends or retracts, it can drive the linkage frame (216) to rotate relative to the connecting frame (211), thereby driving the clamping frame (212) to rotate.

3. The highway box beam web line of claim 1, wherein, The intermediate clamping member (214) includes a clamping cylinder, which is fixedly mounted on the connecting frame (211). The output end of the clamping cylinder is provided with a jaw to clamp the stirrup (200).

4. The highway box beam web line of claim 1, wherein, The welding device (3) includes a frame (31) and two sets of welding components. The frame (31) includes an upper frame (311) and a lower frame (312), which are fixedly connected by a column (313). The two sets of welding components are symmetrically arranged on the upper frame (311) and the lower frame (312). Each set of welding components includes: Two transformer assemblies (32), both of which are fixed to the upper frame (311) or the lower frame (312); Two welding electrode moving assemblies (33) are slidably disposed on the upper frame (311) or the lower frame (312), with the sliding direction along the arrangement direction of the plurality of longitudinal ribs (100); each welding electrode moving assembly (33) includes two welding electrodes (331), which are electrically connected to the positive and negative poles of a transformer assembly (32) respectively. During welding, one of the two welding electrodes (331) is used to press one of the longitudinal ribs (100), and the other is used to press the corresponding stirrup (200) to form a current loop; Multiple fixed electrode assemblies (34) are disposed on the upper frame (311) or the lower frame (312) and are disposed corresponding to the multiple longitudinal ribs (100).

5. The highway box beam web line of claim 4, wherein, The welding electrode moving assembly (33) includes: Two welding cylinders (332), each of the welding cylinders (332) has an electrode seat (333) at its output end, and each of the electrode seats (333) has a welding electrode (331) on it. The end of the welding electrode (331) that presses against the longitudinal rib (100) is provided with a positioning groove. The third drive assembly (336) has a slider (335) slidably mounted on the upper frame (311) or the lower frame (312) at its output end, and both welding cylinders (332) are fixed on the slider (335).

6. The highway box beam web line of claim 4, wherein, The welding device (3) further includes two sets of wire threading tube assemblies (35), with the two rows of longitudinal ribs (100) respectively threaded into the two sets of wire threading tube assemblies (35). The two sets of wire threading tube assemblies (35) are respectively arranged on the upper frame (311) and the lower frame (312). The position of at least one set of wire threading tube assemblies (35) along the arrangement direction of the longitudinal ribs (100) is adjustable.

7. A method of processing and producing a highway box girder web, characterized by, The highway box girder web processing production line according to any one of claims 1-6, the highway box girder web processing production method includes the following steps: S1, the longitudinal reinforcement transport area (A) transports multiple longitudinal reinforcements (100) to a designated position in the welding area (C), and the multiple longitudinal reinforcements (100) are arranged in two rows in the welding area (C); the spacing between the two rows of longitudinal reinforcements (100) along the arrangement direction of the longitudinal reinforcements (100) is adjusted; S2, the bending machine (1) bends the steel bar raw material into a stirrup (200) with an opening; the robot (2) clamps the stirrup (200) and expands the opening of the stirrup (200); S3, the robot (2) puts the stirrup (200) on the two rows of longitudinal bars (100) and closes the opening of the stirrup (200), and the stirrup (200) and the longitudinal bars (100) are welded and positioned; S4, the welding device (3) presses and fixes the stirrup (200) and the longitudinal bar (100), and the robot (2) releases the stirrup (200); S5, the welding device (3) is powered on and welds the stirrup (200) and the longitudinal bar (100); S6, After welding is completed, the mesh pulling mechanism (4) pulls the welded longitudinal bar (100) by a distance equal to the distance between two adjacent stirrups (200); S7, return to step S2, until the required number of stirrups (200) are welded onto the longitudinal rib (100), the mesh pulling mechanism (4) pulls the longitudinal rib (100) to the unloading position.

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