Box girder steel reinforcement framework processing production line of U-shaped rib and mesh assembly

Abstract

The application provides a box girder steel reinforcement framework processing production line of U-shaped rib and mesh assembly, belongs to the technical field of box girder framework, and comprises a U-shaped rib processing area, a box girder bottom web framework assembly area, a first longitudinal rib processing area, a second longitudinal rib processing area, a top plate steel mesh processing area and a steel cage assembly area; the first longitudinal rib processing area, the box girder bottom web framework assembly area and the second longitudinal rib processing area are sequentially and adjacently arranged; the top plate steel mesh processing area and the steel cage assembly area are sequentially and adjacently arranged and are oppositely arranged with the first longitudinal rib processing area, the box girder bottom web framework assembly area and the second longitudinal rib processing area; and the U-shaped rib processing area is adjacently arranged with the box girder bottom web framework assembly area. The technical problem of low production efficiency of the existing box girder framework manufacturing process is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of box girder framework, and particularly relates to a box girder steel framework processing production line with U-shaped steel bars and mesh assembly. BACKGROUND

[0002] The box girder is one of important structures for building highway and railway bridges in China, and is built in the mode of cast-in-place at the earliest. This mode has problems of long construction period, great influence on traffic, high overall energy consumption, many on-site construction personnel, and great labor intensity of workers. Later, the concept of fabricated bridge building appeared, and the box girder is standardized and prefabricated. Whether the prefabricated box girder or the cast-in-place box girder needs to process the box girder steel framework first, then install the concrete pouring mold outside the box girder framework, and then pour the concrete into the mold to form the box girder.

[0003] The existing processing mode of the box girder framework is usually manual binding forming on one operation table. Specifically, the binding single-piece bottom plate stirrup is installed on the bottom web binding jig, the web stirrup is installed, the processing of the bottom web steel mesh is gradually completed, the binding single-piece top plate stirrup is installed on the top plate mesh binding jig, and the binding of the top plate steel mesh is gradually completed. The degree of automation is low, the labor intensity is great, multiple operation modes are crossed, the management is chaotic, the production efficiency is low, and the processing error is prone to be large.

[0004] Therefore, it is necessary to provide an improved technical scheme for the above-mentioned deficiencies of the prior art. SUMMARY

[0005] The application aims to provide a box girder steel framework processing production line with U-shaped steel bars and mesh assembly to solve the technical problem of low production efficiency of the existing box girder framework processing production mode.

[0006] In order to achieve the above-mentioned purpose, a box girder steel framework processing production line with U-shaped steel bars and mesh assembly provides the following technical scheme:

[0007] A box girder steel framework processing production line with U-shaped steel bars and mesh assembly, the production line comprises:

[0008] A U-shaped steel bar processing area for processing first U-shaped steel bars and positioning mesh, the positioning mesh is used for welding to the first U-shaped steel bars to form second U-shaped steel bars;

[0009] A box girder bottom web framework assembly area for assembling the web longitudinal steel bars and the bottom plate longitudinal steel bars with the first U-shaped steel bars and the second U-shaped steel bars to form the box girder bottom web framework;

[0010] A first longitudinal steel bar processing area for processing the web longitudinal steel bars;

[0011] A second longitudinal reinforcement processing area for processing the bottom plate longitudinal reinforcement;

[0012] A top plate reinforcement mesh processing area for processing the top plate reinforcement mesh;

[0013] A reinforcement cage assembly area for assembling the box girder bottom web framework and the top plate reinforcement mesh to form the box girder reinforcement framework;

[0014] The first longitudinal reinforcement processing area, the box girder bottom web framework assembly area, and the second longitudinal reinforcement processing area are arranged in sequence and adjacent to each other, the top plate reinforcement mesh processing area and the reinforcement cage assembly area are arranged in sequence and adjacent to each other, and the arrangement mode is opposite to that of the first longitudinal reinforcement processing area, the box girder bottom web framework assembly area, and the second longitudinal reinforcement processing area, and the U-shaped reinforcement processing area is arranged adjacent to the box girder bottom web framework assembly area.

[0015] As a further optimized technical solution, the U-shaped reinforcement processing area is adjacent to a first processing unit for processing the first U-shaped reinforcement and a second processing unit for processing the positioning mesh, and a splice welding table for welding the first U-shaped reinforcement and the positioning mesh is arranged between the first processing unit and the second processing unit.

[0016] As a further optimized technical solution, the first processing unit comprises:

[0017] A first straightening and cutting device for straightening and cutting the reinforcement;

[0018] A bending device arranged on the back side of the first straightening and cutting device for bending the reinforcement into a first U-shaped reinforcement with a double-layer structure at one time;

[0019] A first transfer device arranged on one side of the bending device for grabbing the first U-shaped reinforcement after bending;

[0020] A first buffer vehicle for buffering and transferring the first U-shaped reinforcement grabbed by the first transfer device.

[0021] As a further optimized technical solution, the second processing unit comprises:

[0022] A second straightening and cutting device for straightening and cutting the reinforcement to form short reinforcement and long reinforcement;

[0023] A first buffer rack arranged on both sides of the second straightening and cutting device for buffering the short reinforcement processed from the second straightening and cutting device;

[0024] A second buffer rack arranged on the side away from the second straightening and cutting device of the first buffer rack for buffering the long reinforcement processed from the second straightening and cutting device;

[0025] A steel bracket is arranged between the first and second storage racks, and has a rectangular frame structure of a table top for supporting the short and long reinforcement bars;

[0026] An extrusion device is arranged on one side of the second storage rack, and is used for extruding two adjacent long reinforcement bars to form a limiting structure;

[0027] A grabbing device is used for conveying the production materials during the positioning net processing.

[0028] A connecting device is used for fixing the short and long reinforcement bars to form the positioning net.

[0029] As a further optimized technical solution, at least a circulating transportation track is arranged between the U-shaped bar processing area and the bottom web skeleton assembly area of the box girder, and is used for transporting the products between the U-shaped bar processing area and the bottom web skeleton assembly area.

[0030] As a further optimized technical solution, the U-shaped bar processing area further comprises a placing unit for vertically and parallelly placing the first and second U-shaped bars in a set order, and the placing unit comprises:

[0031] A first placing structure is used for placing the first and second U-shaped bars.

[0032] A conveying device is arranged on one side of the first placing structure, and is used for conveying the first and second U-shaped bars placed by the first placing structure in a set order.

[0033] A second placing structure is arranged above the conveying device, and is used for vertically placing the first and second U-shaped bars on the conveying device.

[0034] A U-shaped bar positioning vehicle is arranged on the other side of the conveying device relative to the first placing structure, and is used for buffering and transporting the first and second U-shaped bars placed by the second placing structure.

[0035] As a further optimized technical solution, a plurality of sets of the U-shaped bar positioning vehicles are arranged, and run along the circulating transportation track.

[0036] As a further optimized technical solution, the first and second longitudinal bar processing areas and the box girder bottom web skeleton assembly area are arranged side by side, and the first and second longitudinal bar processing areas are respectively arranged at two ends of the box girder bottom web skeleton assembly area.

[0037] As a further optimized technical solution, the top plate reinforcement mesh processing area and the reinforcement cage assembly area are arranged in sequence and adjacent to each other, and are arranged opposite to the first longitudinal bar processing area, the box girder bottom web skeleton assembly area and the second longitudinal bar processing area.

[0038] As a further optimization technical solution, the U-shaped rib processing area is arranged adjacent to the box girder bottom web skeleton assembly area.

[0039] Beneficial effects: By setting the production line, during work, first, the first U-shaped rib and the positioning net are processed in the U-shaped rib processing area, and part of the first U-shaped rib and the positioning net are welded to form the second U-shaped rib, then the second U-shaped rib and the first U-shaped rib are transported to the box girder bottom web skeleton assembly area for assembly, the web longitudinal rib and the bottom plate longitudinal rib are installed in the working position to finally assemble the box girder bottom web skeleton, the top plate steel mesh sheet is processed in the top plate steel mesh sheet processing area, then the top plate steel mesh sheet is transported to the steel cage assembly area and the bottom web skeleton to assemble the box girder steel skeleton. Through the U-shaped rib processing area, the bottom web skeleton assembly area, the steel cage assembly area and other flow work stations, the flow processing of the steel skeleton is realized, and the utilization rate and processing efficiency of the site are improved.

[0040] In addition, by setting the circulating transportation track, the U-shaped rib positioning vehicle circulates in the U-shaped rib processing area and the bottom web skeleton assembly area, the utilization rate of multiple sets of U-shaped rib positioning vehicles is improved, the continuity of the whole production line production process is ensured, and the processing efficiency is improved.

[0041] Finally, the production line of the application mainly includes a top plate production line and a bottom web production line, the top plate production line is an intelligent steel processing production line integrating longitudinal rib distribution, hoop rib bending, hoop rib welding, reinforcing rib bending and welding, and overall discharge, the web production line is an intelligent steel processing production line integrating U-shaped rib overall bending, positioning net automatic forming, U-shaped rib+positioning net automatic assembly and welding, positioning net automatic placement and conveying, longitudinal rib distribution and automatic welding, etc. The automatic assembly and forming of the top plate steel accounts for 100%, the automatic assembly and forming of the bottom web steel accounts for more than 80%, compared with the traditional manual operation mode, the top plate processing reduces labor by 90%, the bottom web processing reduces labor by 60%, and the total processing reduces labor by 70%. BRIEF DESCRIPTION OF DRAWINGS

[0042] The drawings accompanying the specification of this application serve to provide further understanding of the application, the illustrative embodiments of the application and the description thereof serve to explain the application, and do not constitute an improper limitation on the application. Among them:

[0043] Figure 1 It is a layout schematic diagram of each processing area of the U-shaped rib and net piece assembly box girder steel skeleton processing production line of the U-shaped rib and net piece assembly of the application;

[0044] Figure 2 It is a layout schematic diagram of the circulating transportation track of the U-shaped rib and net piece assembly box girder steel skeleton processing production line of the U-shaped rib and net piece assembly of the application;

[0045] Figure 3 This is a schematic diagram of the overall structure of the U-shaped bar and mesh assembly box girder steel reinforcement skeleton processing production line of the present invention, in Embodiment 1.

[0046] Figure 4 This is a schematic cross-sectional view of a box girder in Embodiment 1 of the production line for processing and manufacturing box girder steel reinforcement skeletons assembled with U-shaped reinforcing bars and mesh according to the present invention.

[0047] Figure 5 This is a schematic diagram of the second U-shaped bar structure in Example 1 of the production line for processing and producing the U-shaped bar and mesh assembly box girder steel reinforcement skeleton of the present invention.

[0048] Figure 6 This is a schematic diagram of the first processing unit structure of Embodiment 1 of the U-shaped bar and mesh assembly production line for processing and producing box girder steel reinforcement skeletons according to the present invention;

[0049] Figure 7 This is a schematic diagram of the second processing unit structure of Embodiment 1 of the U-shaped bar and mesh assembly production line for processing and producing box girder steel reinforcement skeletons of the present invention;

[0050] Figure 8 This is a schematic diagram of the layout of some processing units in the U-shaped bar processing area of ​​the U-shaped bar and mesh assembly box girder steel reinforcement skeleton processing production line of Embodiment 1 of the present invention;

[0051] Figure 9 This is a schematic diagram of the U-bar positioning vehicle structure in Embodiment 1 of the U-bar and mesh assembly production line for processing and producing box girder steel reinforcement skeletons of the present invention;

[0052] Figure 10 This is a schematic diagram of the third processing unit structure of the U-shaped bar and mesh assembly box girder steel skeleton processing production line of Embodiment 1 of the present invention;

[0053] Figure 11 This is a schematic diagram of the structure of a production line for processing and assembling U-shaped bars and mesh for box girders according to Embodiment 2 of the present invention;

[0054] Figure 12 This is a schematic diagram of the structure of Example 3 of the production line for processing box girder steel reinforcement skeletons assembled with U-shaped reinforcing bars and mesh according to the present invention.

[0055] In the figure: 1, U-shaped rib processing area; 2, first U-shaped rib; 3, positioning net; 301, short rib; 302, long rib; 3021, limiting structure; 4, box girder bottom web skeleton assembly area; 5, web longitudinal rib; 6, bottom plate longitudinal rib; 7, first longitudinal rib processing area; 8, second longitudinal rib processing area; 9, top plate steel mesh processing area; 11, steel cage group assembly area; 12, first processing unit; 1201, first straightening and cutting equipment; 1202, bending hoop equipment; 1203, first transfer equipment; 1204, first buffer car; 13, second processing unit; 1301, second straightening and cutting equipment; 1302, first buffer rack; 1303, second buffer rack; 1304, steel bracket; 1305, extrusion equipment; 1306, grabbing equipment; 1306a, short rib feeding gantry; 1306b, long rib feeding gantry; 1306c, discharging gantry; 1307, connecting equipment; 14, welding table; 15, circulating transportation track; 16, placing unit; 1601, first placing structure; 1602, conveying equipment; 1603, second placing structure; 1604, U-rib positioning car; 16041, car body; 16042, U-shaped rib clamp; 16043, power wheel; 17, third processing unit; 1701, third straightening and cutting equipment; 1702, automatic feeding equipment; 1703, wire inserting equipment; 1704, mesh forming equipment; 1705, reinforcing rib forming equipment; 1706, mesh discharging conveying line; 1707, overturning mechanism; 18, top plate longitudinal rib; 18a, top plate hoop rib. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0057] In the description of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application, not requiring the present application to be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "connected", "connected" used in the present application should be understood broadly, for example, can be fixed connection, can also be detachable connection; can be directly connected, can also be indirectly connected through intermediate parts, and those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0058] The present application will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0059] The present application provides a box girder steel reinforcement framework processing production line combined with U-shaped bars and meshes, which is provided with production lines for different processing operations in different processing areas, and the processing mode is streamlined, the division of labor is clear, the structure is compact, the degree of automation is high, and the production efficiency is effectively improved.

[0060] Embodiment 1

[0061] As shown in Figure 1 , Figure 2 , Figure 3 , the production line for processing box girder steel reinforcement framework has a U-shaped bar processing area 1, a box girder bottom web framework assembly area 4, a first longitudinal bar processing area 7, a second longitudinal bar processing area 8, a top plate steel mesh processing area 9, and a steel cage assembly area 11.

[0062] The U-shaped bar processing area 1 is used for processing the first U-shaped bar 2 and the positioning mesh 3, and the positioning mesh 3 is used for welding to the first U-shaped bar 2 to form the second U-shaped bar.

[0063] The box girder bottom web framework assembly area 4 is used for assembling the web longitudinal bars 5 and the bottom plate longitudinal bars 6 with the first U-shaped bar 2 and the second U-shaped bar to form the box girder bottom web framework.

[0064] The first longitudinal bar processing area 7 and the second longitudinal bar processing area 8 are arranged side by side with the box girder bottom web framework assembly area 4, and the first longitudinal bar processing area 7 and the second longitudinal bar processing area 8 are respectively arranged at both ends of the box girder bottom web framework assembly area 4, i.e., the first longitudinal bar processing area 7, the box girder bottom web framework assembly area 4, and the second longitudinal bar processing area 8 are arranged in sequence and adjacent to each other, and are respectively used for processing the web longitudinal bars 5 and the bottom plate longitudinal bars 6.

[0065] In the present application, since the processing methods of the web longitudinal bars 5 and the bottom plate longitudinal bars 6 are different, the diameter of the bottom plate longitudinal bars 6 is 20 mm, the steel raw material is a strip bar, the longest is 12 m, and needs to be lengthened (flash butt welding or lap welding can be used), which requires larger equipment and site. The diameter of the web longitudinal bars 5 is 12 mm, the steel raw material is a disc steel bar, and only needs to be straightened and cut by a straightening machine, so the web longitudinal bars 5 and the bottom plate longitudinal bars 6 need to be arranged in processing areas respectively. After the web longitudinal bars 5 are straightened and cut, they are directly buffered to the buffer rack first, and the buffer rack is installed as a whole. After the bottom plate longitudinal bars 6 are processed, they need to be buffered in the bottom plate longitudinal bar processing area first, and then the bars are threaded; and the first longitudinal bar processing area 7 and the second longitudinal bar processing area 8 are respectively arranged at both sides of the box girder bottom web framework assembly area 4, which is more conducive to reducing the site space, improving the site utilization rate, and facilitating the organization and control of the production line.

[0066] The top slab steel mesh processing area 9 is used for processing the top slab steel mesh, and the steel cage group assembly area 11 is used for assembling the bottom slab web framework and the top slab steel mesh to finally form the box girder steel framework.

[0067] In the present application, the top slab steel mesh processing area 9 and the steel cage group assembly area 11 are arranged in sequence and adjacent to each other, so as to facilitate the transportation of the top slab steel mesh to the steel cage group assembly area 11, and the arrangement is opposite to the first longitudinal reinforcement processing area 7, the box girder bottom slab web framework assembly area 4 and the second longitudinal reinforcement processing area 8, the U-shaped bar processing area 1 is arranged adjacent to the box girder bottom slab web framework assembly area 4, so as to facilitate the transportation of the first U-shaped bar and the second U-shaped bar of the U-shaped bar processing area 1 to the box girder bottom slab web framework assembly area 4.

[0068] In this way, during the processing, the first U-shaped bar and the second U-shaped bar processed by the U-shaped bar processing area 1 are sent to the box girder bottom slab web framework assembly area 4, the web longitudinal reinforcement and the bottom slab longitudinal reinforcement transported from the two end processing areas are installed in the box girder bottom slab web framework assembly area 4 to form the box girder bottom slab web framework, the box girder bottom slab web framework is transported to the steel cage group assembly area 11, and the top slab steel mesh processed by the top slab steel mesh processing area 9 is also transported to the steel cage group assembly area 11 to be assembled with the box girder bottom slab web framework, so as to finally form the box girder steel framework.

[0069] Further, as shown in Figure 6 , the U-shaped bar processing area 1 is adjacent to the first processing unit 12 for processing the first U-shaped bar and the second processing unit 13 for processing the positioning net, and the butt welding table 14 for welding the first U-shaped bar and the positioning net is arranged between the first processing unit 12 and the second processing unit 13.

[0070] The first processing unit 12 comprises the first straightening and cutting device 1201, the hoop bending device 1202, the first transfer device 1203 and the first buffer vehicle 1204.

[0071] The first straightening and cutting device 1201 is used for straightening and cutting the steel bars according to the length required by the different first U-shaped bars, so as to facilitate the operation of the subsequent procedures; the hoop bending device 1202 is arranged at the rear side of the first straightening and cutting device 1201, in this embodiment, the first U-shaped bar is bent 9 times through the seven-head bending device to form, and in other embodiments, the first U-shaped bar can also be integrally bent to form; the specific structure of the first U-shaped bar can be referred to Figure 4 , Figure 5 ; the first transfer device 1203 is arranged on one side of the hoop bending device 1202 and is used for grabbing the first U-shaped bar after bending, in this embodiment, the first transfer device adopts a gantry grabber; the first buffer vehicle 1204 is used for buffering and transferring the first U-shaped bar grabbed by the first transfer device 1203, and the welding of the nodes of the bent first U-shaped bar is completed in the buffering process.

[0072] Thus in the production process, first is the first straightening cutting device 1201 according to the design requirements of the reinforcement straightening and cutting, the cut off the reinforcement after the hoop equipment 1202 bending forming through the gantry grab transfer to the first buffer car 1204, so as to facilitate the next station.

[0073] As Figure 5 The positioning net 3 includes a plurality of parallel short bars 301 and long bars 302 arranged vertically to the short bars 301, so that the short bars 301 and the long bars 302 are fixedly connected to each other to form a net structure for positioning and installing the corrugated pipe 10 to form a prestressed tendon installation pipeline, thereby ensuring the positioning accuracy of the prestressed tendon. Since different highway box girder prestressed beam sizes are different, the diameter of the corrugated pipe 10 is also different. When processing the positioning net 3, in order to ensure the positioning accuracy of the corrugated pipe 10, the long bars 302 of the same piece of positioning net 3 are extruded to form a limiting structure 3021. With the existence of the limiting structure, the two long bars 302 form two installation channels with different diameters, thereby ensuring the positioning accuracy of the corrugated pipe 10.

[0074] The second processing unit 13 includes a second straightening cutting device 1301, a first buffer rack 1302, a second buffer rack 1303, a reinforcement bracket 1304, an extrusion device 1305, a grabbing device 1306, and a connecting device 1307.

[0075] As Figure 7 The second straightening cutting device 1301 is used to straighten and cut the reinforcement to form the short bars 301 and the long bars 302. The first buffer rack 1302 is arranged on both sides of the second straightening cutting device 1301 and is used to buffer the short bars 301 processed from the second straightening cutting device 1301. In this embodiment, the first buffer rack 1302 is L-shaped and two L-shaped first buffer racks 1302 are arranged to form a processing area. The second buffer rack 1303 is arranged on the side of the first buffer rack 1302 away from the second straightening cutting device 1301 and is used to buffer the long bars 302 processed from the second straightening cutting device 1301. The reinforcement bracket 1304 is arranged between the first buffer rack 1302 and the second buffer rack 1303 and has a rectangular frame structure for supporting the short bars 301 and the long bars 302. In this embodiment, in order to facilitate the fixation of the short bars 301 and the long bars 302 to form the positioning net 3, the bottom of the reinforcement bracket 1304 is moved by servo control to move the positioning net 3 from the feeding position to the position of the connecting device 1307.

[0076] The extrusion device 1305 is arranged on one side of the second buffer rack 1303 and is used to extrude two adjacent long bars to form the limiting structure 3021.

[0077] The grabbing device 1306 is used to transfer the production materials during the processing of the positioning net 3. Specifically, the grabbing device 1306 includes a short bar feeding gantry 1306a, a long bar feeding gantry 1306b and a discharging gantry 1306c, which are used to transfer the short bar 301, the long bar 302 and the processed positioning net 3, respectively.

[0078] The connecting device 1307 is used to fix the short bar 301 and the long bar 302 to form the positioning net 3. In the embodiment, the connecting device 1307 is a mobile welding machine, and the travel track of the mobile welding machine is the same as that of the long bar feeding gantry 1306b, so as to facilitate the welding needs of the two processing lines. In other embodiments, the connecting device 1307 can also be a fixed welding machine, and the welding is completed by the step-by-step movement of the steel bar bracket 1304.

[0079] The processing method of the specific positioning net 3 includes the following steps:

[0080] Step 1: The second straightening and cutting device 1301 processes the short bar 301 and the long bar 302 according to the design requirements, and the short bar 301 is placed on the first buffer rack 1302, and the long bar 302 is placed on the second buffer rack 1303.

[0081] Step 2: The short bar 301 is fed to the steel bar bracket 1304 by the short bar feeding gantry 1306a, the steel bar bracket 1304 is moved forward to the long bar feeding area by servo control, and the spacing between the steel bar brackets 1304 is adjusted.

[0082] Step 3: The long bar 302 is fed to the steel bar bracket 1304 by the long bar feeding gantry 1306b after being extruded by the extrusion device 1305.

[0083] Step 4: After the feeding is completed, the connecting device 1307 moves to the position of the steel bar bracket 1304 to perform welding, thereby forming the positioning net 3, and the finally formed positioning net 3 is discharged to the ground rail by the discharging gantry 1306c.

[0084] Further, as shown in Figure 8 The U-shaped bar processing area 1 further includes a placing unit 16 for vertically placing the first U-shaped bar 2 and the second U-shaped bar in a set order. The placing unit 16 includes a first placing structure 1601, a conveying device 1602, a second placing structure 1603 and a U-shaped bar positioning vehicle 1604.

[0085] The first placing structure 1601 is used for placing the first U-shaped steel 2 and the second U-shaped steel in a set order (the arrangement order of the first U-shaped steel 2 and the second U-shaped steel in the formed beam steel framework) on the conveying device 1602, the first placing structure 1601 is selected as a mechanical arm, and the conveying device 1602 is selected as a common conveying belt arranged on one side of the first placing structure 1601 and used for conveying the first U-shaped steel 2 and the second U-shaped steel placed on the conveying device 1602 in the set order. The second placing structure 1603 is also selected as a mechanical arm and arranged above the conveying device 1602 and used for vertically inserting and placing the first U-shaped steel 2 and the second U-shaped steel on the U-shaped steel positioning trolley 1604. The U-shaped steel positioning trolley 1604 is arranged on the other side of the conveying device 1602 opposite to the first placing structure 1601 and used for buffering and transporting the first U-shaped steel 2 and the second U-shaped steel placed by the second placing structure 1603.

[0086] Specifically in work, there are two working modes. One is that the second placing structure 1603 is fixed on the conveying device 1602 by a fixed support, when the first U-shaped steel 2 and the second U-shaped steel are conveyed to the working range of the second placing structure 1603, the second placing structure 1603 starts to work, sequentially grabs the first U-shaped steel 2 and the second U-shaped steel and inserts them on the U-shaped steel positioning trolley 1604, in this process, the second placing structure 1603 inserts once on the U-shaped steel positioning trolley 1604, and the U-shaped steel positioning trolley 1604 moves forward once to move the position to be placed into the working range of the second placing structure 1603, so as to facilitate the second placing structure 1603 to insert the first U-shaped steel 2 or the second U-shaped steel on the U-shaped steel positioning trolley 1604 again.

[0087] The other working mode is that the second placing structure 1603 is fixedly installed on the conveying device 1602 by a movable support, when the first U-shaped steel 2 and the second U-shaped steel are conveyed to the working range of the second placing structure 1603, the second placing structure 1603 and the support start to work at the same time, sequentially grab the first U-shaped steel 2 and the second U-shaped steel and insert them on the U-shaped steel positioning trolley 1604, in this process, the second placing structure 1603 inserts once on the U-shaped steel positioning trolley 1604, the support moves backward once relative to the U-shaped steel positioning trolley 1604, and the U-shaped steel positioning trolley 1604 is stationary, when the placing is completed, the U-shaped steel positioning trolley 1604 transports the first U-shaped steel 2 and the second U-shaped steel to the box girder bottom web framework assembling area 4.

[0088] In the embodiment, the U-shaped steel positioning trolley 1604 adopts an RGV trolley, because the second working mode program is easier to set, so the second working mode is adopted in the application. In other embodiments, the first working mode can also be adopted. In addition, in other embodiments, the U-shaped steel positioning trolley can also be other forms of U-shaped steel positioning trolleys.

[0089] In the present application, the U-bar positioning vehicle 1604 directly transports the first U-bar 2 or the second U-bar to the box girder bottom web framework assembly area 4 and directly serves as an operation platform. The web longitudinal bar 5 and the bottom plate longitudinal bar 6 are installed on the U-bar positioning vehicle 1604. Specifically, the power wheel 16043 of the U-bar positioning vehicle 1604 is lifted to install the bottom plate longitudinal bar 6.

[0090] As shown in Figure 9 The U-bar positioning vehicle 1604 includes a vehicle body 16041. A plurality of sets of U-bar clamps 16042 are arranged on the top of the vehicle body 16041 and are aligned with each other to clamp the second U-bar and the first U-bar 2. Each pair of U-bar clamps 16042 has two oppositely arranged clamp structures, and each clamp has two limit plates arranged in parallel. When the second U-bar and the first U-bar 2 are placed, the second U-bar and the first U-bar 2 can be vertically limited on the U-bar positioning vehicle 1604 by the U-bar clamps 16042.

[0091] In this process, in order to facilitate the setting of the bottom plate longitudinal bar 6, a plurality of power wheels 16043 are arranged side by side on the top of the vehicle body 16041. The power wheels 16043 can be lifted. When the longitudinal bar on the upper part of the bottom plate is set in place, the power wheels 16043 are lifted to make the longitudinal bar on the upper part of the bottom plate contact the second U-bar and the first U-bar 2. Then welding is performed. After the longitudinal bar on the upper part of the bottom plate is installed, the longitudinal bar on the lower part of the bottom plate is installed. In order to avoid interference between the second U-bar and the first U-bar 2 and the power wheels 16043, the power wheels 16043 are arranged staggered between the U-bar clamps 16042.

[0092] As shown in Figure 2 A circulating transportation track 15 is arranged between the U-bar processing area 1 and the box girder bottom web framework assembly area 4 to transport products between the U-bar processing area 1 and the bottom web framework assembly area, thereby improving the utilization rate of transportation equipment. In the present embodiment, the U-bar positioning vehicle 1604 runs along the circulating transportation track 15.

[0093] In this way, after the U-bar positioning vehicle 1604 transports the first U-bar 2 and the second U-bar that need to be processed to the box girder bottom web framework assembly area 4, it returns to the U-bar processing area 1 along the circulating transportation track 15 after completing the installation of the bottom web longitudinal bar to transport again.

[0094] Further, the U-bar positioning vehicle 1604 is provided with two sets, which can realize parallel operation of the U-bar positioning vehicle 1604 in the U-bar processing area 1 and the box girder bottom web framework assembly area 4, thereby ensuring the continuity of production.

[0095] Further, in order to ensure smooth operation of the plurality of U-shaped steel positioning vehicles 1604, the length of the circulating transportation track 15 needs to be adjusted according to the length of the U-shaped steel positioning vehicle 1604 in actual production, and therefore, in the present application, the circulating transportation track 15 also passes through the first longitudinal steel processing area 7 at one end of the U-shaped steel processing area 1.

[0096] In the roof steel mesh processing area 9, the roof steel framework is processed by using the third processing unit 17.

[0097] The roof steel framework includes two layers of roof longitudinal steels 18 arranged in parallel, and a plurality of loops of roof stirrups 18a arranged in parallel and sleeved on the periphery of the two layers of longitudinal steels, the roof stirrups 18a and the roof longitudinal steels 18 are longitudinally and transversely crossed to form a double-layer mesh structure connected to each other; in addition, since the roof steel framework is used as the top surface of the bridge in the later stage and is mainly used to bear the load of the vehicle flow, in order to ensure the strength and stability of the roof steel framework, a reinforcing bar is additionally installed on the roof steel framework, the reinforcing bar is arranged vertically to the roof longitudinal steel 18 and is fixedly connected to the roof longitudinal steel 18.

[0098] In the present embodiment, the roof steel framework is divided into a side beam roof steel framework and a middle beam roof steel framework, wherein the middle beam roof steel framework does not need to be provided with a reinforcing bar, and the side beam roof steel framework needs to be provided with a reinforcing bar.

[0099] As shown in Figure 10 The third processing unit 17 includes a third straightening and cutting device 1701, an up-and-down layered feeding device 1702, a wire inserting device 1703, a mesh forming device 1704, a reinforcing bar forming device 1705, a mesh discharging conveying line 1706, and a turnover mechanism 1707.

[0100] The third straightening and cutting device 1701 is used to straighten and cut the steel profile according to the design requirements to form the roof longitudinal steel 18. The up-and-down layered feeding device 1702 is arranged at the rear side of the third straightening and cutting device 1701 and is used to arrange the roof longitudinal steels 18 in two layers, the roof longitudinal steels 18 in each layer are arranged in order at a design interval and are sent to the rear device. The wire inserting device 1703 is arranged at the rear side of the up-and-down layered feeding device 1702 and is used to process the roof stirrup 18a and weld and fix the roof stirrup 18a to the roof longitudinal steel 18. The reinforcing bar forming device 1705 is arranged at the rear side of the mesh forming device 1704 and is used to process the reinforcing bar and install the reinforcing bar to the roof steel framework. The mesh discharging conveying line 1706 is arranged at the reinforcing bar forming device 1705 and is used to step-by-step convey the roof steel framework. The turnover mechanism 1707 is arranged at one side of the mesh discharging conveying line 1706 and turns over the roof steel framework processed and formed in reverse and adjusts the roof steel framework away from the processing station.

[0101] The specific processing steps of the roof steel framework include:

[0102] Step 1, straighten the top plate longitudinal rib 18 by the third straightening cutting device 1701, and cut to the set length;

[0103] Step 2, feed the top plate longitudinal rib 18 into the upper and lower layered feeding device 1702, so that the top plate longitudinal rib 18 is divided into two layers and arranged at a set interval;

[0104] Step 3, arrange the top plate longitudinal rib 18 into the mesh forming device 1704 by the wire inserting device 1703, the mesh forming device 1704 includes a mesh forming all-in-one machine composed of a hoop rib forming machine and a welding machine, the hoop rib forming machine transmits the cut top plate hoop rib 18a to the lower part of the double-layer top plate longitudinal rib 18, the top plate hoop rib 18a is bent by the bending mechanism in the hoop rib forming machine, and the bent top plate hoop rib 18a is wrapped around the outer periphery of the double-layer top plate longitudinal rib 18; the welding machine welds and connects the parts where the top plate hoop rib 18a and the double-layer top plate longitudinal rib 18 contact each other;

[0105] Step 4, install the reinforcing rib by the reinforcing rib forming device 1705, the reinforcing rib extends perpendicularly to the length of the double-layer longitudinal rib 4.

[0106] Step 5, the top plate longitudinal rib 18 moves to the next station, and steps 3 and 4 are repeated to continue the production of the next top plate longitudinal rib 18 until the production of the whole steel cage is completed, and the steel cage enters the mesh discharging conveying line 1706.

[0107] The overall working principle of the embodiment is:

[0108] First, the first U-shaped rib and the positioning net are processed in the U-shaped rib processing area, the first U-shaped rib and the positioning net are inserted into the U-shaped rib positioning vehicle through the placing unit, the U-shaped rib positioning vehicle moves in the clockwise direction along the circulating transportation track to the box girder bottom web skeleton assembly area, the web longitudinal rib and the bottom plate longitudinal rib are installed at this position, and the box girder bottom web skeleton is formed after the installation is completed. The box girder bottom web skeleton is hoisted to the steel cage assembly area, and the U-shaped rib positioning vehicle hoisted away from the box girder bottom web skeleton continues to move along the circulating transportation track to the U-shaped rib processing area for circulating work. The steel mesh processed in the top plate steel mesh processing area is also transported to the steel cage assembly area and assembled with the box girder bottom web skeleton to finally form the box girder steel skeleton. Through the production line processing, the process is streamlined, the degree of mechanization is high, and the production efficiency is greatly improved.

[0109] Embodiment 2

[0110] Figure 11Another embodiment of the U-shaped rib and mesh group spliced U-shaped rib and mesh group spliced box girder steel reinforcement framework processing production line of the application is shown, the embodiment structure is basically the same as that of embodiment 1, the difference is that the arrangement mode of embodiment 1 is 4 pieces per day, the arrangement mode of this embodiment is 8 pieces per day, in this embodiment, two sets of equipment for processing the first U-shaped rib 2 and the second U-shaped rib are arranged in the U-shaped rib processing area 1.

[0111] Embodiment 3

[0112] Figure 12 Another embodiment of the U-shaped rib and mesh group spliced U-shaped rib and mesh group spliced box girder steel reinforcement framework processing production line of the application is shown, the embodiment structure is basically the same as that of embodiment 2, the difference is that in this embodiment, the U-shaped rib processing area 1 is arranged at the edge of the workshop, the box girder bottom web framework assembly area 4, the first longitudinal rib processing area 7 and the second longitudinal rib processing area 8 are arranged at the middle position of the workshop.

[0113] It can be understood that the above description is only exemplary, and the embodiments of the present application do not limit this.

[0114] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is within the protection scope of the claims of the present application.

Claims

1. A box girder steel reinforcement framework processing production line of U-shaped bars and mesh assembly, characterized in that, The production line comprises the following arranged in sequence: A U-shaped rib processing area (1) for processing a first U-shaped rib (2) and a positioning net (3) for welding to the first U-shaped rib (2) to form a second U-shaped rib; A box girder bottom web skeleton assembly area (4) for assembling a web longitudinal rib (5) and a bottom plate longitudinal rib (6) with the first U-shaped rib (2) and the second U-shaped rib to form a box girder bottom web skeleton; A first longitudinal rib processing area (7) for processing the web longitudinal rib (5); A second longitudinal rib processing area (8) for processing the bottom plate longitudinal rib (6); A top plate steel mesh processing area (9) for processing a top plate steel mesh; A steel cage assembly area (11) for assembling the box girder bottom web skeleton and the top plate steel mesh to finally form a box girder steel skeleton; The U-shaped rib processing area (1) is provided with a first processing unit (12) for processing the first U-shaped rib (2) and a second processing unit (13) for processing the positioning net (3) arranged adjacent to each other, and a splicing and welding table (14) for welding the first U-shaped rib (2) and the positioning net (3) is arranged between the first processing unit (12) and the second processing unit (13); The second processing unit (13) comprises: A second straightening and cutting device (1301) for straightening and cutting steel bars to form short bars (301) and long bars (302); A first buffer rack (1302) arranged on both sides of the second straightening and cutting device (1301) for buffering the short bars (301) processed from the second straightening and cutting device (1301); A second buffer rack (1303) arranged on the side of the first buffer rack (1302) away from the second straightening and cutting device (1301) for buffering the long bars (302) processed from the second straightening and cutting device (1301); A steel bar bracket (1304) arranged between the first buffer rack (1302) and the second buffer rack (1303) having a rectangular frame structure of a table top for supporting the short bars (301) and the long bars (302); A pressing device (1305) arranged on one side of the second buffer rack (1303) for pressing two adjacent long bars (302) to form a limiting structure (3021); A grabbing device (1306) for transferring production materials during processing of the positioning net (3); A connecting device (1307) for fixing the short bars (301) and the long bars (302) to form the positioning net (3).

2. The U-bar and mesh group assembly box girder steel reinforcement framework processing production line according to claim 1, characterized in that, The first processing unit (12) comprises: A first straightening and cutting device (1201) for straightening and cutting steel bars; A bending device (1202) is arranged at the rear side of the first straightening and cutting device (1201) and used to bend the steel bars into the first U-shaped bars (2) with a double-layer structure at one time; A first transfer device (1203) is arranged at one side of the bending device (1202) and used to grab the first U-shaped bars (2) after bending. A first buffer vehicle (1204) is used to buffer and transfer the first U-shaped bars (2) grabbed by the first transfer device (1203).

3. The box girder steel bar framework processing production line of U-shaped steel and mesh assembly according to claim 1, characterized in that, At least one circulating transportation track (15) is arranged between the U-shaped bar processing area (1) and the box girder bottom and web framework assembly area (4) and used to transport products between the U-shaped bar processing area (1) and the bottom and web framework assembly area.

4. The U-bar and mesh assembly box girder steel reinforcement framework processing production line according to claim 3, characterized in that, The U-shaped bar processing area (1) further comprises a placing unit (16) used to place the first U-shaped bars (2) and the second U-shaped bars vertically and in parallel in a set order, and the placing unit (16) comprises: A first placing structure (1601) used to place the first U-shaped bars (2) and the second U-shaped bars; A conveying device (1602) arranged at one side of the first placing structure (1601) and used to convey the first U-shaped bars (2) and the second U-shaped bars placed by the first placing structure (1601) in a set order; A second placing structure (1603) arranged above the conveying device (1602) and used to place the first U-shaped bars (2) and the second U-shaped bars on the conveying device (1602) vertically; A U-shaped bar positioning vehicle (1604) arranged at the other side of the conveying device (1602) relative to the first placing structure (1601) and used to buffer and transport the first U-shaped bars (2) and the second U-shaped bars placed by the second placing structure (1603).

5. The U-bar and mesh assembly box girder steel reinforcement framework processing production line according to claim 4, characterized in that, A plurality of U-shaped bar positioning vehicles (1604) are arranged and run along the circulating transportation track (15).

6. The box girder steel reinforcement framework processing production line of U-shaped steel and mesh assembly according to any one of claims 1-5, characterized in that, The first longitudinal bar processing area (7), the second longitudinal bar processing area (8) and the box girder bottom and web framework assembly area (4) are arranged side by side, and the first longitudinal bar processing area (7) and the second longitudinal bar processing area (8) are respectively arranged at the two ends of the box girder bottom and web framework assembly area (4).

7. The U-bar and mesh assembly box girder steel reinforcement framework processing production line according to claim 6, characterized in that, characterized in that, The top plate steel mesh processing area (9) and the steel cage group assembly area (11) are arranged in sequence and adjacent to each other, and the arrangement mode is opposite to that of the first longitudinal bar processing area (7), the box girder bottom and web framework assembly area (4) and the second longitudinal bar processing area (8).

8. The box girder steel bar framework processing production line of U-shaped steel and mesh assembly according to claim 6, characterized in that, The U-shaped bar processing area (1) and the box girder bottom and web framework assembly area (4) are arranged adjacent to each other.

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