Prefabricated small box girder production system and production method

Abstract

The invention provides a prefabricated small box girder production system and method, relates to a box girder production technology, and particularly discloses a steel bar jig frame, a hydraulic mold structure and a steam curing shed, and further comprises a movable pedestal, and the steel bar jig frame, the hydraulic mold structure and the steam curing shed are all provided with movable channels which are sequentially communicated. The movable pedestal is arranged in the movable channel in a sliding manner; a manufacturing box is mounted between the steel bar jig frame and the hydraulic mold structure; a first conveying mechanism used for conveying weft steel bars is installed in the manufacturing box. A second conveying mechanism used for conveying the warp steel bars is installed on the side, away from the steel bar jig frame, of the manufacturing box. When the second conveying mechanism conveys the warp steel bars into the manufacturing area of the manufacturing box, the first conveying mechanism conveys the weft steel bars into the manufacturing area, and the weft steel bars abut against the warp steel bars; a welding mechanism used for welding the warp steel bars and the weft steel bars which are distributed in a crossed mode is installed on the top of the manufacturing box.

Description

Technical Field

[0001] The present invention relates to the technical field of box girder production, and more particularly, to a precast small box girder production system and a production method. Background Art

[0002] Precast box girders are one of the most commonly used beam types in modern bridges.

[0003] At present, the steel bar meshes manufactured by traditional row welding machines and the steel bar cages manufactured by traditional rolling welding machines can no longer meet the huge demand for special-shaped steel bar cages in the construction engineering industry. The manufacture of special-shaped steel bar cages requires a pre-designed steel bar binding bench, and the size and shape of the steel bar binding bench for different precast box girder skeletons vary according to the changes in the box girder skeletons, resulting in a relatively complex assembly and splicing process. Moreover, when binding weft steel bars or warp steel bars, manual welding and bundling are usually adopted, which not only increases the labor intensity of workers and has low efficiency, but also has a high error rate in manual operation, resulting in a large amount of steel bar waste and engineering losses.

[0004] Although there are currently welding machines for welding the above structures, the above welding machines can only manufacture welded meshes and circular and square steel bar cages; when welding special-shaped steel bar cages, the welding point spacing between the weft steel bars and the warp steel bars varies greatly, and it is easy to have a virtual welding problem when directly welding the two. Moreover, with the extension of the warp steel bars, the existing welding structure cannot adapt to the production of precast box girder skeletons with longer dimensions. Summary of the Invention

[0005] The purpose of the present invention is to provide a precast small box girder production system, aiming at the deficiencies of the prior art, which can solve the problems raised in the above background art.

[0006] The technical solution of the present invention is realized as follows: The present invention provides a precast small box girder production system, which includes a steel bar support, a hydraulic die structure, and a steam curing shed arranged in sequence along the horizontal direction, and also includes a moving pedestal. The steel bar support, the hydraulic die structure, and the steam curing shed are all provided with moving channels that are sequentially connected, and the moving pedestal is slidably arranged in the moving channels; A production box is installed between the steel bar support and the hydraulic die structure; A first transmission mechanism for transmitting weft steel bars is installed in the production box; A second transmission mechanism for transmitting warp steel bars is installed on the side of the production box facing away from the steel bar support; When the second transmission mechanism feeds the warp steel bars into the production area of the production box, the first transmission mechanism feeds the weft steel bars into the production area, and the weft steel bars and the warp steel bars cross and abut against each other; a welding mechanism for welding the cross-distributed warp steel bars and weft steel bars is installed on the top of the production box; A third transmission mechanism identical to the second transmission mechanism is installed on the steel bar frame.

[0007] In some technical solutions of the present invention, the second transmission mechanism includes a transmission frame and a feeding rack. The transmission frame is installed on the side of the production box away from the steel bar frame, and the feeding rack is installed on the transmission frame. The feeding rack is equipped with a transmission rack for fixing the weft steel bars; the feeding rack is equipped with a first driving mechanism for driving the feeding rack to move along the extension direction of the transmission frame.

[0008] In some technical schemes of the present invention, the material transfer rack includes a reference frame installed on the side wall of the feed rack, deflection frames are rotatably provided on both sides of the reference frame, a first telescopic rod connected to the deflection frame is installed on the reference frame, guide members are installed on the deflection frame and the reference frame, a slideway for accommodating warp steel bars is provided on the guide member, and a first electromagnetic lock is installed in the slideway.

[0009] In some technical schemes of the present invention, the first transmission mechanism includes two rotating frames arranged in pairs, and the two rotating frames are rotatably arranged in a production box. A deflection mechanism for driving the two rotating frames to rotate synchronously is installed in the production box. Mounting shafts for clamping the ends of the weft steel bars are installed on the opposite side walls of the two rotating frames, and a clamping body is installed on the free end of the mounting shaft. A clamping groove is opened on the side wall of the clamping body, and a second electromagnetic lock is installed in the clamping groove.

[0010] In some technical schemes of the present invention, the welding mechanism includes an operating box, the bottom of which is equipped with a crawling mechanism for enabling it to move along the extension direction of the weft steel bars; a welding gun is installed in the operating box, and a lifting structure for lifting the warp steel bars is installed on the side wall of the operating box; a driving mechanism transmission-connected to the lifting structure is installed in the operating box, and the driving mechanism is used to drive the lifting structure to perform reciprocating rotational motion relative to the operating box.

[0011] In some technical solutions of the present invention, the lifting structure includes a lifting frame rotatably arranged on the side wall of the operating box, a lifting claw is rotatably provided at the end of the lifting frame, and a second telescopic rod connected to the lifting claw is installed on the side wall of the lifting frame.

[0012] In some technical schemes of the present invention, the crawling mechanism includes two groups of crawling components arranged in pairs, and the two crawling components are both arranged in an operating box. A limiting groove adapted to the weft steel bars is opened at the bottom of the operating box, and two embracing wheels are installed in the crawling component; when the weft steel bars are placed in the limiting groove, the two embracing wheels clamp on the outer wall of the weft steel bars.

[0013] In some technical solutions of the present invention, the driving mechanism includes a rotating disk rotatably arranged in an operating box, and an adjusting mechanism for driving the rotating disk to rotate periodically is provided in the operating box, and the rotating disk is transmission-connected to the lifting frame.

[0014] In some technical solutions of the present invention, stabilizing members are installed on both sides of the operation box, and the stabilizing members are periodically connected to the weft steel bars under the adjustment of the rotating disk.

[0015] A method for producing precast small box girders includes the following steps: The operator adjusts the deflection angle of the deflector of the material transfer rack; The warp steel bars are sequentially inserted into the slideways of the guiding members and fixed in position by the first electromagnetic lock; the second transmission mechanism conveys the warp steel bars along the feeding rack to the manufacturing area of the manufacturing box; The weft steel bars are laid flat and fed into the manufacturing area of the manufacturing box, and the first transmission mechanism converts the weft steel bars from horizontal to vertical; The welding mechanism moves along the extension direction of the weft steel bar. After the welding mechanism moves to the intersection point of the weft steel bar and the warp steel bar, the lifting structure lifts the warp steel bar to a state of contacting the weft steel bar; Under the drive of the drive mechanism, the stabilizing mechanism locks the locking sleeve on the weft steel bar through the electromagnetic lock installed in the locking sleeve, locking the position of the operation box; Then, the intersection point of the weft steel bar and the warp steel bar is welded by a welding gun; After the box girder steel bar framework formed by the weft steel bars and the warp steel bars is completed; the box girder steel bar framework enters the steel bar formwork under the drive of the second transmission mechanism and the third transmission mechanism, The moving pedestal transports the box girder steel bar framework located in the steel bar formwork to the concrete pouring area; And it is placed into the stainless steel hydraulic mold; After the pouring is completed, the moving pedestal enters the steam curing shed along the steel track for curing.

[0016] Compared with the prior art, the present invention has at least the following advantages or beneficial effects: After the warp steel bars are arranged by the material conveying rack in the second transmission mechanism, the material conveying rack and the formed warp steel bars are conveyed by the feeding rack into the manufacturing area of the manufacturing box; moreover, the first electromagnetic lock installed in the slideway locks the warp steel bars in the material conveying rack to prevent the warp steel bars from slipping along their extending direction, resulting in deviation of the butt joints between the warp steel bars and the weft steel bars. When the formed warp steel bars conveyed by the feeding rack gradually enter the steel bar framework from the manufacturing area of the manufacturing box, the third transmission mechanism located in the steel bar framework will gradually bear the framework structure after the warp steel bars and the weft steel bars are woven, avoiding problems such as bending or dislocation of the un-welded warp steel bars caused by the gradual increase of the self-weight of the framework structure. And it can avoid the problem of virtual welding or inability to weld when the cross-point spacing between the warp steel bars and the weft steel bars further increases. Moreover, the second transmission mechanism and the third transmission mechanism provided can both traction the connected warp steel bars to reciprocate on the line formed by the transmission rack, the manufacturing box and the steel bar framework. In this way, the weft steel bars can enter the warp steel bars from the right or left side of the warp steel bars, shortening the moving distance of the weft steel bars and improving the weaving efficiency of the structure for the framework structure.

[0017] When the operation box moves along the extending direction of the weft steel bar, after the operation box moves to a certain intersection of the weft steel bar and the warp steel bar, the lifting mechanism in the operation box forcibly adjusts the weft / warp spacing to zero, eliminating the risk of virtual welding and improving the welding accuracy; the stabilizing mechanism arranged on the operation box prevents the operation box from deflecting left and right on the weft steel bar, ensuring the reliability of the welding part when the welding gun welds a certain intersection of the weft steel bar and the warp steel bar. The two operation boxes respectively fix the welded / to-be-welded weft steel bars, and ensure the consistency of the spacing through the linkage of the stabilizing frame, making the welding track without deviation; the crawling mechanism in the operation box enables the operation box to walk along the steel bar by itself, and the two crawling components in the crawling mechanism can move up and down in the operation box. When the crawling mechanism drives the operation box to move from the horizontal section of the weft steel bar to the inflection point in the extending direction of the weft steel bar, the two crawling components slidably arranged in the operation box can be clamped on the outer side wall of the weft steel bar by the surrounding wheels, and the two crawling components can make up-and-down undulating movements in the operation box, ensuring that the operation box can smoothly move from the horizontal section of the weft steel bar to the inclined section of the weft steel bar and improving the adaptability of the structure. The welding gun synchronously welds the intersections at two positions, ensuring the welding quality and improving the efficiency; the locking sleeve is driven by the rotating disk to lock the steel bars through the electrode linkage, ensuring the stability and consistency of the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall layout structure of the present invention.

[0019] Figure 2Schematic diagram of the installation structure of the operation box and the steel bar jig in the present invention.

[0020] Figure 3 Schematic diagram of the installation structure of the operation box and the transfer rack in the present invention.

[0021] Figure 4 Schematic diagram of the three-dimensional structure of the operation box in the present invention.

[0022] Figure 5 Schematic diagram of the three-dimensional structure of the feeding rack in the present invention.

[0023] Figure 6 Schematic diagram of the installation structure of the material transfer rack in the present invention.

[0024] Figure 7 Front view structure schematic diagram after the combination of the operation box and the rotating rack in the present invention.

[0025] Figure 8 Schematic diagram of the combined structure of the third telescopic rod and the rotating rack in the present invention.

[0026] Figure 9 Schematic diagram of the three-dimensional structure after the combination of the operation box and the rotating rack in the present invention.

[0027] Figure 10 Front view internal structure schematic diagram of the operation box in the present invention.

[0028] Figure 11 Rear view internal structure schematic diagram of the operation box in the present invention.

[0029] Figure 12 Side view internal structure schematic diagram of the operation box in the present invention.

[0030] Figure 13 Schematic diagram of the three-dimensional structure after the combination of two operation boxes in the present invention.

[0031] Reference numerals: 1, basic ground; 101, mobile pedestal; 102, steel rail; 103, steam curing shed; 104, hydraulic die structure; 2, steel bar framework; 3, production box; 301, material fixing frame; 4, feeding frame; 401, first driving motor; 402, traveling gear; 403, deflecting frame; 404, reference frame; 405, guiding member; 406, first telescopic rod; 5, transmission frame; 501, rack; 6, longitudinal steel bar; 7, transverse steel bar; 701, support frame; 702, rotating frame; 703, third telescopic rod; 704, connecting member; 705, parking frame; 706, clamping body; 707, mounting shaft; 8, operation box; 801, rotating disk; 802, retaining frame; 803, adjusting rod; 804, outer protrusion; 805, stabilizing frame; 806, locking sleeve; 807, lifting frame; 808, adapter block; 809, notch; 810, lifting claw; 811, driving gear; 812, driven gear; 813, transmission gear; 814, mounting frame; 815, blocking spring; 816, limiting block; 817, limiting groove; 818, sliding shaft; 819, limiting spring; 820, surrounding wheel; 821, second telescopic rod; 9, welding gun. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment The present invention provides a precast small box girder production system, as Figures 1 - 13As shown in the figure, it includes a steel bar framework 2, a hydraulic die structure 104, a steam curing shed 103 and a mobile pedestal 101, integrating the whole process of steel cage framework production, concrete pouring and steam curing, enabling modular assembly line operation in the production process of small box girders, and improving the efficient and standardized production of small box girders. In the actual production process, the mobile pedestal 101 runs on the steel track 102 to realize the collaborative operation of each module, significantly improving the forming accuracy and production efficiency of precast components. The number of steel tracks 102 is at least 2, and the steel tracks 102 are embedded in the foundation ground 1 to ensure the translational stability of the mobile pedestal 101; the track length covers the steel bar binding area to the steam curing shed; and transverse tracks are also embedded on the foundation ground 1, enabling multiple mobile pedestals 101 to operate in the area from the steel bar binding area to the curing shed without interference. The bottom of the mobile pedestal 101 is equipped with walking wheels and an internal drive motor, which transports the box girder steel bar framework and precast beam body along the track. This is not shown in the figure, and in addition, it is a conventional technical means. The mobile pedestal 101 is a standardized device with the function of multi-station switching.

[0035] A production box 3 is installed between the steel bar framework 2 and the hydraulic die structure 104.

[0036] On one side of the production box 3 facing away from the steel bar framework 2, a transmission rack 5 is installed, and a second transmission mechanism for transmitting the warp steel bars 6 to the production area of the production box 3 is provided on the transmission rack 5. The provided feeding rack 4 has the same structure as the steel bar framework 2, both are steel frame structures, and a third transmission mechanism identical to the first transmission mechanism is installed on the steel bar framework 2. The second transmission mechanism pushes the warp steel bars 6 into the production area of the production box 3, and the third transmission mechanism pulls the warp steel bars 6 from the production box 3 into the steel bar framework 2, accelerating the forming progress of the precast steel bars and enabling the gradually formed box girder steel bar framework to quickly enter the next process.

[0037] The provided production box 3 is prefabricated and formed with a steel frame structure, which is rectangular in shape as a whole and hollow inside.

[0038] The specific structure of the second transmission mechanism includes a feeding rack 4. A material transmission rack for arranging the warp steel bars 6 is installed on the feeding rack 4, and a first driving mechanism for driving it to reciprocate on the transmission rack 5 is installed on the feeding rack 4.

[0039] The specific structure of the material transmission rack includes a reference frame 404, which is a steel square tube structure, and the reference frame 404 is fixedly connected to the feeding rack 4 by bolts. Deflection racks 403 are provided on both sides of the reference frame 404 through pin rotation, and the deflection racks 403 are also square tube structures. A first telescopic rod 406 is installed on the reference frame 404, and the telescopic end of the first telescopic rod 406 is connected to the outer wall of the deflection rack 403. The reference frame 404 and the deflection rack 403 set in the initial state are perpendicular to each other, and the two material transmission racks and the reference frame 404 are spliced ​​to form a U shape as a whole. Guide members 405 are installed on the inner side or outer side of the deflection rack 403 and the reference frame 404. The guide members 405 are fixed on the inner side or outer side of the deflection rack 403 and the reference frame 404 by bolts. There are multiple guide members 405, and multiple guide frames are equidistantly arranged in the area enclosed by the deflection rack 403 and the reference frame 404. The guide member 405 is provided with a slideway for accommodating the warp steel bars 6, and the slideway is a U-shaped groove or a C-shaped notch or a sleeve structure. A first electromagnetic lock is installed in the slide. The first electromagnetic lock can generate a magnetic attraction force on the warp steel bars 6, thereby fixing the warp steel bars 6 in the slide, preventing the warp steel bars 6 from moving at will, and avoiding deviation of the docking point between the warp steel bars 6 and the weft steel bars 7.

[0040] The specific structure of the first driving mechanism includes 4 gears, which are installed in groups of two on both sides of the feeding rack 4, that is, two traveling gears 402 are installed on the same side of the feeding rack 4. A rack 501 meshing with the traveling gear 402 is installed in the transmission rack 5, and the rack 501 is a long rack 501, and the number is 2 groups. A first driving motor 401 connected to one of the gears is installed in the feeding rack 4. The first driving motor 401 is a servo motor. The first driving motor 401 is connected to the rotating shaft of the gear through a coupling, so that the power output by the first driving motor 401 can be directly driven to the gear 402, thereby improving the efficiency of the operation of this structure. In addition, the gear and the rack 501 can cooperate to play a self-locking function, so as to prevent the feeding rack 4 from moving on the transmission rack 5 at will, causing any two adjacent weft steel bars 7 to be not equidistantly arranged.

[0041] When it is necessary to make prefabricated box beam reinforcement skeletons of different shapes, the operator needs to adjust the angle between the deflection frame 403 and the reference frame 404 by controlling the first telescopic rod 406. The first telescopic rod 406 adjusts the movement angle of the deflection frame 403 to 0°-90°, first forming a specific shape to adapt to the production requirements of box beams of various shapes. Then the operator inserts the corresponding number of warp steel bars 6 into the guide members 405 provided on the material conveying frame in sequence, arranges the warp steel bars 6 neatly in advance, and then moves the material conveying frame 4 along the extension direction of the transmission frame 5 through the first driving mechanism, and transports the warp steel bars 6 to the production area of ​​the production box 3.

[0042] Preferably, a material fixing frame 301 with the same structure as the material transfer frame is also installed in the production area of the production box 3. The material fixing frame 301 can prevent the warp steel bars 6 entering the production area from bending or being disordered in arrangement due to the excessive length of the steel bars. The material fixing frame 301 can reciprocate along the line formed by the transfer frame 5, the production box 3 and the steel bar formwork 2. That is, the material fixing frame 301 is slidably arranged on the line formed by the transfer frame 5, the production box 3 and the steel bar formwork 2 through a slide rail. And the initial position of the material fixing frame 301 is at the top of the production box 3, and it is fixed on the side wall of the production box 3 through an electromagnetic lock. When the skeleton structure formed by the weaving of the warp steel bars 6 and the weft steel bars 7 in the area of the steel bar formwork 2 is too long, the electromagnetic lock installed on the material fixing frame 301 releases the locking effect. The material fixing frame 301 can slide along the above line. And the electromagnetic lock for fixing the warp steel bars 6 on the material fixing frame 301 does not release its locking of the weft steel bars 7 at this time.

[0043] The third transfer mechanism will pull the skeleton structure formed by the weaving of the warp steel bars 6 and the weft steel bars 7 and the material fixing frame 301 into the steel bar formwork 2. In this way, the weft steel bars 7 can enter the area enclosed by the warp steel bars 6 from the other side of the warp steel bars 6, shortening the pulling distance of the warp steel bars 6 and improving the weaving efficiency of the structure for the skeleton structure.

[0044] A first transfer mechanism for transferring the weft steel bars 7 is installed in the production box 3.

[0045] The first transfer mechanism includes two paired rotating frames 702. The rotating frames 702 are made of steel rod structures. Both of the two rotating frames 702 are rotatably arranged on the inner side wall of the operation box 8 through a rotating shaft and bearings. Preferably, a cross beam is provided at the bottom of the two rotating frames 702, and the provided cross beam is fixedly connected to the rotating frames 702 through bolts.

[0046] A deflection mechanism for driving the two rotating frames 702 to rotate synchronously is installed in the production box 3. The deflection mechanism drives the two rotating frames 702 to make a 90° counterclockwise flipping movement in the production box 3. After grasping the weft steel bars 7 built in the production box 3, it rotates 90 degrees clockwise relative to the production box 3 again and is perpendicular to the warp steel bars 6. It makes preparations for the welding work of the weft steel bars 7 and the warp steel bars 6.

[0047] The weft steel bars 7 are conveyed into the manufacturing box 3 through a belt conveyor mechanism installed outside the manufacturing box 3, and the weft steel bars 7 are laid flat on the conveying surface of the belt conveyor mechanism, which is not shown in the drawings. When the two rotary frames 702 are driven by the deflection mechanism to change from a state perpendicular to the manufacturing box 3 to a parallel state, a part of the rotary frames 702 is placed inside the manufacturing box 3, which can better clamp the weft steel bars 7. Mounting shafts 707 are installed on the opposite side walls of the two rotary frames 702, and clamping bodies 706 are installed at the free ends of the mounting shafts 707. The clamping bodies 706 are used to clamp the ends of the weft steel bars 7. Clamping grooves are formed on the side walls of the clamping bodies 706, and second electromagnetic locks are installed in the clamping grooves. The clamping bodies 706 are all in a U-shaped frame structure. The second electromagnetic locks installed in the clamping grooves temporarily fix the ends of the weft steel bars 7 between the two rotary frames 702 by strong magnetism. When the weft steel bars 7 are welded to the warp steel bars 6, the second electromagnetic locks release the fixing effect on the ends of the weft steel bars 7.

[0048] The specific structure of the provided deflection mechanism is as follows: a third telescopic rod 703 installed inside the manufacturing box 3. The third telescopic rod 703 is a hydraulic telescopic rod or an electric telescopic rod. The body of the hydraulic telescopic rod is fixed inside the manufacturing box 3, and a connecting piece 704 is installed at the telescopic end of the hydraulic telescopic rod. The connecting piece 704 is L-shaped. One end of the connecting piece 704 is rotatably connected to the telescopic end of the hydraulic telescopic rod through a pin shaft, and the other end of the connecting frame is fixedly connected to the end of the rotary frame 702.

[0049] Preferably, the provided deflection structure can also be a servo motor.

[0050] After the first conveying mechanism flips the rotary frame 702 by 90° on the manufacturing box 3 through the hydraulic telescopic rod and the L-shaped connecting piece 704, the weft steel bars 7 are vertically delivered to the warp steel bars 6.

[0051] Preferably, inside the discharge port opened at the top of the manufacturing box 3, and the provided discharge port can ensure the smooth entry and exit of the weft steel bars 7 from the manufacturing box 3.

[0052] The working process of weaving the warp steel bars 6 and the weft steel bars 7: After the warp steel bars 6 are arranged by the material conveying rack in the second transmission mechanism, the feeding rack 4 conveys the material conveying rack and the formed warp steel bars 6 into the manufacturing area of the manufacturing box 3; moreover, the first electromagnetic lock installed in the slideway locks the warp steel bars 6 in the material conveying rack to prevent the warp structure from slipping along its extending direction, which may cause deviation in the butt joint between the warp steel bars 6 and the weft steel bars 7. When the formed warp steel bars 6 conveyed by the feeding rack 4 gradually enter the steel bar framework 2 from the manufacturing area of the manufacturing box 3, the third transmission mechanism located in the steel bar framework 2 will gradually bear the framework structure woven by the warp steel bars 6 and the weft steel bars 7, avoiding problems such as bending or dislocation of the un-welded warp steel bars 6 caused by the gradual increase of the self-weight of the framework structure. And it also avoids problems such as virtual welding or inability to weld occurring due to the further increase in the spacing between the crossing points of the warp steel bars 6 and the weft steel bars 7. In addition, the second transmission mechanism and the third transmission mechanism are both set to be able to traction the connected warp steel bars 6 to reciprocate on the line formed by the transmission rack 5, the manufacturing box 3 and the steel bar framework 2. In this way, the weft steel bars 7 can enter the warp steel bars 6 from the right or left side of the warp steel bars 6, shortening the moving distance of the weft steel bars 7 and improving the weaving efficiency of the structure for the framework structure.

[0053] The welding mechanism includes an operation box 8, which is a rectangular box made of steel. The inside of the operation box 8 is hollow, forming a rectangular installation space. A through groove penetrating the operation box 8 is provided on the side wall of the operation box 8, and a crawling mechanism for moving along the weft steel bar 7 is installed in the through groove. The crawling mechanism is composed of 2 sets of crawling components. The crawling components can slide in the channel along the height direction of the operation box 8. The specific structure of the crawling component is an "U"-shaped mounting frame 814, and a limiting block 816 is slidably arranged on the inner wall of the operation box 8. A limiting groove 817 adapted to the limiting block 816 is provided on the inner wall of the operation box 8, and the limiting groove 817 is vertically provided on the inner wall of the operation box 8. A blocking spring 815 connected to the mounting frame 814 is installed on the limiting block 816. Sliding shafts 818 are respectively penetrated through the two vertical ends of the mounting frame 814, and two surrounding wheels 820 are respectively installed on the sliding shafts 818 through a frame body. A limiting spring 819 connected to the mounting frame 814 is sleeved on the sliding shafts 818. The outer circle of the provided surrounding wheel 820 is tangent to the weft steel bar 7. And the weft steel bar 7 is placed between the two surrounding wheels 820. Preferably, the sliding shafts 818 are inclinedly arranged in the mounting frame 814. The specific working process of the crawling mechanism is as follows: when the crawling mechanism drives the operation box 8 to move on the horizontal section of the weft steel bar 7, the two mounting frames 814 are kept in a horizontal state under the limitation of the limiting block 816 and the blocking spring 815; when the crawling mechanism drives the operation box 8 to move from the horizontal section of the weft steel bar 7 to the inclined section of the weft steel bar 7, the two surrounding wheels 820 located on the front side of the operation box 8 are always clamped on the outer side of the inclined section of the weft steel bar 7, and the two surrounding wheels 820 located on the rear side of the operation box 8 are always clamped on the outer side of the horizontal section of the weft steel bar 7; due to the action of the two mounting frames 814 corresponding to their respective limiting blocks 816 and blocking springs 815, the two crawling components make an up-and-down undulating movement in the operation box 8, adapting to the slope formed between the horizontal section of the weft steel bar 7 and the inclined section of the weft steel bar 7, ensuring that the operation box 8 can smoothly move from the horizontal section of the weft steel bar 7 to the inclined section of the weft steel bar 7, improving the adaptability of the structure, and the operation box 8 is in an inclined state when it is between the horizontal section and the inclined section of the weft steel bar 7 during the above movement process. A locking sleeve 806 located outside the operation box 8 can guide the above mechanism to move along the extending direction of the weft steel bar 7.

[0054] Preferably, there are two operation boxes 8, and a stabilizing frame 805 is installed between the two operation boxes 8. The stabilizing frame 805 is fixed to the outer wall of the operation box 8 by bolts or welding. And the two operation boxes 8 correspond to two weft steel bars 7 respectively. When one of them is located on the welded weft steel bars 7, the other operation box 8 is located on the weft steel bars 7 to be welded. In this way, the welding work of the weft steel bars 7 can rely on the two operation boxes 8 to locate the distance between any two weft steel bars 7, ensure the welding accuracy of the structure, and prevent the weft steel bars 7 from being misaligned during the welding process with the warp steel bars 6. Preferably, the stabilizing frame 805 can be replaced by an electric telescopic rod.

[0055] Two welding guns 9 are installed in the operating box 8. The welding guns 9 are used to weld the intersection of the weft steel bars 7 and the warp steel bars 6. Using two welding guns 9 can ensure welding accuracy and increase welding range, thereby ensuring the welding strength of the weft steel bars 7 and the warp steel bars 6.

[0056] A lifting structure for lifting the warp steel bars 6 is installed on the side wall of the operation box 8, and a driving mechanism connected to the lifting structure is installed in the operation box 8. The lifting structure can prevent the latitude steel bars 7 from intersecting with the warp steel bars 6 due to the large gap between the latitude steel bars 7 and the warp steel bars 6, causing problems such as cold welding between the two. In addition, the lifting structure can adapt to the problem that the spacing between the latitude steel bars 7 and the warp steel bars 6 at different points in different areas is large and small, avoiding the common occurrence of cold welding between the two.

[0057] The lifting structure includes a lifting frame 807, which is rotatably arranged on the outer wall of the operating box 8 through an axis rod. The axis rod and the lifting frame 807 are integrally formed. A lifting claw 810 is rotatably arranged at the end of the lifting frame 807. A second telescopic rod 821 connected to the lifting claw 810 is installed on the side wall of the lifting frame 807. The body of the second telescopic rod 821 is installed on the lifting frame 807 through a pin shaft. The second telescopic rod 821 is a micro electric telescopic rod, and the telescopic end of the second telescopic rod 821 is rotatably connected to the lifting claw 810 through a pin shaft. In the initial state, the set lifting claw 810 is on the same horizontal line with the lifting frame 807 under the action of the second telescopic rod 821.

[0058] The driving mechanism includes a rotating disk 801, and the rotating disk 801 rotates a holder 802 arranged in the operating box 8 through a rotating shaft. An adjusting mechanism for driving the rotating disk 801 to rotate periodically is arranged in the operating box 8, and the specific structure of the adjusting mechanism is the holder 802 installed in the operating box 8. A driving gear 811 and a driven gear 812 are rotatably arranged on the side wall of the holder 802, and two mutually meshing transmission gears 813 are also installed between the driving gear 811 and the driven gear 812, one of which is meshed with the driving gear 811, and the other is meshed with the driven gear 812. The rotating disk 801 is connected to the shaft rod installed on the lifting frame 807 through a shaft sleeve transmission. Two U-shaped notches 809 are provided on the side wall of the transmission disk, and an adjusting rod 803 connected to a driving gear 811 and a driven gear 812 is installed on the side wall of the retaining frame 802. An adjusting block perpendicular to the adjusting rod 803 is installed on the adjusting rod 803, and the adjusting block is cylindrical and fits into the notch 809. A driving motor connected to the driving gear 811 is installed in the operating box 8, and the driving motor is not shown in the figure.

[0059] When the adjusting rod 803 connected to the driving gear 811 rotates upward in the counterclockwise direction, the adjusting block on the adjusting rod 803 enters the notch 809 and pushes the rotating disk 801 to rotate clockwise; at this time, the rotating disk 801 drives the lifting frame 807 to contact the two intersecting latitude steel bars 7 and the warp steel bars 6, and the driven gear 812 rotates downward in the clockwise direction under the transmission of the two transmission gears 813. When the driving motor stops outputting power to the driving gear 811, the lifting frame 807 changes from a horizontal state to a vertical state, and then the lifting claw 810 is pushed to rotate by the second telescopic rod 821 installed on the lifting frame 807 until it contacts the wire steel bars, and the second telescopic rod 821 continues to push the lifting claw 810 to move, lifting the warp steel bars 6 to a state where they intersect with the latitude steel bars 7, so that the distance between the two is zero, and then the latitude steel bars 7 and the warp steel bars 6 are welded together by the welding gun 9. When the driving motor continues to output power to the driving gear 811, the adjusting block on one side of the driving gear 811 gradually moves out of the notch 809. The adjusting block on one side of the driven gear 812 gradually enters the notch 809. At this time, the driven gear 812 pushes the rotating disk 801 to reset through adjustment, and the lifting frame 807 changes from a vertical state to a horizontal state, preparing for the next welding point.

[0060] When there are two groups of operating boxes 8 , two lifting frames 807 respectively located on the two operating boxes 8 are located on both sides of the warp steel bars 6 .

[0061] The bottom of the operation box 8 is equipped with a stabilizing mechanism connected to the driving mechanism, and the stabilizing mechanism includes two stabilizing members, which are periodically connected to the weft steel bars 7 under the adjustment of the rotating disk 801. The stabilizing member includes an outer protrusion 804 installed on the outer circumferential surface of the rotating disk 801, and an adapter block 808 tangent to the circle where the rotating disk 801 is located is installed in the operation box 8. A matching groove adapted to the outer protrusion 804 is opened on the side wall of the adapter block 808, and an electrode is installed in the matching groove, and the electrode is electrically connected to the outer protrusion 804. Stabilizing frames 805 are installed on both sides of the operation box 8, and a locking sleeve 806 with a semi-circular cross section is installed on the stabilizing frame 805. The stabilizing frame 805 is connected to the locking sleeve 806 by bolts, and the stabilizing frame 805 is rotatably arranged on the outside of the operation box 8 by a pin shaft. A torsion spring is installed between the stabilizing frame 805 and the operation box 8, and the stabilizing frame 805 can be an adaptive telescopic rod. The locking sleeve 806 is equipped with an electromagnetic lock, which is electrically connected to the electrode. When the lifting frame 807 changes from a horizontal state to a vertical state until it contacts two intersecting latitude steel bars 7 and warp steel bars 6, the outer protrusion 804 enters the matching groove. After the electrode and the outer protrusion 804 are energized, the locking sleeve 806 is equipped with an electromagnetic lock to lock the locking sleeve 806 on the latitude steel bars 7, ensuring the stability of the welding gun 9 and the lifting frame 807 during operation. A number of outer protrusions 804 are equidistantly installed on the outer circumference of the rotating disk 801.

[0062] Preferably, a parking frame 705 is included, and the parking frame 705 is installed on the top of the production box 3 through the support frame 701. Guide grooves are provided on the side walls of the parking frame 705 and the clamping body 706. The guide grooves are adapted to the guide locking sleeves 806, so that when the operating box 8 moves along the extension direction of the weft steel bar 7 under the drive of the driving mechanism, the operating box 8 can be parked on the parking frame 705, and the electromagnetic lock in the locking sleeve 806 can be used to lock it on the parking frame 705, so as to prepare for the welding of a weft steel bar 7.

[0063] The first electromagnetic lock, the second electromagnetic lock and the electromagnetic lock in this structure use the principle of electromagnetism. When the current passes through the silicon steel sheet, the electromagnetic lock will generate a strong suction force to tightly absorb the adsorption iron plate to achieve the locking effect. The specific model of the above electromagnetic lock is: DSW series electromagnetic lock.

[0064] The workflow of this structure is: First, the operator adjusts the angle of the deflection frame 403 of the material transfer frame; The warp steel bars 6 are sequentially inserted into the slideway of the guide member 405 and fixed in position by the first electromagnetic lock; the second transmission mechanism transports the warp steel bars 6 along the feeding rack 4 to the production area of ​​the production box 3; The belt conveyor flattens the weft steel bars 7 and delivers them into the production area of ​​the production box 3, and the first transmission mechanism turns the weft steel bars 7 from horizontal to vertical; The welding mechanism moves along the extending direction of the weft steel bar 7. After the welding mechanism moves to the intersection point of the weft steel bar 7 and the warp steel bar 6, the lifting structure lifts the warp steel bar 6 to a state of contacting the weft steel bar 7. Under the drive of the driving mechanism, the stabilizing mechanism locks the locking sleeve 806 on the weft steel bar 7 through the electromagnetic lock installed in the locking sleeve 806, and locks the position of the operation box 8. Then, the weft steel bar 7 and the warp steel bar 6 are welded by the welding gun 9. After the box girder steel bar skeleton formed by the weft steel bar 7 and the warp steel bar 6 is completed, the box girder steel bar skeleton enters the steel bar jig 2 under the push of the second transmission mechanism. The moving pedestal 101 sends the box girder steel bar skeleton located in the steel bar jig 2 to the concrete pouring area. And it is placed into the stainless steel hydraulic mold.

[0065] After the pouring is completed, the moving pedestal 101 enters the steam curing shed 103 along the track for curing.

[0066] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A prefabricated small box beam production system, comprising a steel tire frame (2), a hydraulic mold structure (104) and a steam curing shed (103) arranged in sequence along a horizontal direction, and also comprising a movable platform (101), wherein the steel tire frame (2), the hydraulic mold structure (104) and the steam curing shed (103) are all provided with a movable channel connected in sequence, and the movable platform (101) is slidably arranged in the movable channel; characterized in that: A production box (3) is installed between the steel bar frame (2) and the hydraulic mold structure (104); A first transmission mechanism for transmitting weft steel bars (7) is installed in the production box (3); A second transmission mechanism for transmitting warp steel bars (6) is installed on a side of the production box (3) facing away from the steel bar frame (2); When the second transmission mechanism delivers the warp steel bars (6) into the manufacturing area of ​​the manufacturing box (3), the first transmission mechanism delivers the weft steel bars (7) into the manufacturing area, and the weft steel bars (7) and the warp steel bars (6) cross and abut against each other; a welding mechanism for welding the cross-distributed warp steel bars (6) and the weft steel bars (7) is installed on the top of the manufacturing box (3); The steel bar frame (2) is provided with a third transmission mechanism which is identical to the second transmission mechanism.

2. A prefabricated small box beam production system according to claim 1, characterized in that: The second transmission mechanism comprises a transmission frame (5) and a feeding frame (4); the transmission frame (5) is mounted on a side of the production box (3) away from the steel bar frame (2); the feeding frame (4) is mounted on the transmission frame (5); a transmission frame for fixing the weft steel bars (7) is mounted on the feeding frame (4); and a first driving mechanism for driving the feeding frame (4) to move along the extension direction of the transmission frame (5) is mounted on the feeding frame (4).

3. A prefabricated small box beam production system according to claim 2, characterized in that: The material transfer rack comprises a reference rack (404) mounted on a side wall of the material feeding rack (4), deflection racks (403) are rotatably provided on both sides of the reference rack (404), a first telescopic rod (406) connected to the deflection rack (403) is installed on the reference rack (404), and a guide member (405) is installed on the deflection rack (403) and the reference rack (404), and a slideway for accommodating warp steel bars (6) is provided on the guide member (405), and a first electromagnetic lock is installed in the slideway.

4. A prefabricated small box beam production system according to claim 1, characterized in that: The first transmission mechanism comprises two rotating frames (702) arranged in pairs, the two rotating frames (702) are both rotatably arranged in the production box (3), a deflection mechanism for driving the two rotating frames (702) to rotate synchronously is installed in the production box (3), mounting shafts (707) for clamping the ends of the weft steel bars (7) are installed on the opposite side walls of the two rotating frames (702), a clamping body (706) is installed on the free end of the mounting shaft (707), a clamping groove is opened on the side wall of the clamping body (706), and a second electromagnetic lock is installed in each of the clamping grooves.

5. A prefabricated small box beam production system according to claim 1 or 4, characterized in that: The welding mechanism comprises an operating box (8), the bottom of which is provided with a crawling mechanism for enabling the operating box (8) to move along the extension direction of the weft steel bars (7); a welding gun is installed in the operating box (8), and a lifting structure for lifting the warp steel bars (6) is installed on the side wall of the operating box (8); a driving mechanism connected to the lifting structure in transmission is installed in the operating box (8), and the driving mechanism is used to drive the lifting structure to perform reciprocating rotational motion relative to the operating box (8).

6. A prefabricated small box beam production system according to claim 5, characterized in that: The lifting structure comprises a lifting frame (807) rotatably arranged on the side wall of the operating box (8), a lifting claw (810) being rotatably arranged at the end of the lifting frame (807), and a second telescopic rod (821) connected to the lifting claw (810) being installed on the side wall of the lifting frame (807).

7. A prefabricated small box beam production system according to claim 5, characterized in that: The crawling mechanism comprises two sets of crawling components arranged in pairs, both crawling components are arranged in the operating box (8), the bottom of the operating box (8) is provided with a limiting groove (817) adapted to the latitude steel bar (7), and two embracing wheels (820) are installed in the crawling component; when the latitude steel bar (7) is placed in the limiting groove (817), the two embracing wheels (820) are clamped on the outer side wall of the latitude steel bar (7).

8. The prefabricated small box beam production system according to claim 6, characterized in that: The driving mechanism comprises a rotating disk (801) rotatably arranged in the operating box (8), and an adjusting mechanism for driving the rotating disk (801) to rotate periodically is arranged in the operating box (8), and the rotating disk (801) is transmission-connected to the lifting frame (807).

9. A prefabricated small box beam production system according to claim 8, characterized in that: Stabilizing members are installed on both sides of the operating box (8), and the stabilizing members are periodically connected to the weft steel bars (7) under the adjustment of the rotating disk (801).

10. A method for producing a prefabricated small box beam, characterized in that: The prefabricated small box beam production system according to any one of claims 1 to 9 comprises the following steps: The operator adjusts the angle of the deflection frame (403) of the material transfer frame; The warp steel bars (6) are sequentially inserted into the slideway of the guide member (405) and fixed in position by a first electromagnetic lock; the second transmission mechanism transports the warp steel bars (6) along the feeding rack (4) to the production area of ​​the production box (3); The weft steel bars (7) are sent into the production area of ​​the production box (3), and the first transmission mechanism converts the weft steel bars (7) from horizontal to vertical; The welding mechanism moves along the extension direction of the latitude steel bars (7), and when the welding mechanism moves to the intersection of the latitude steel bars (7) and the warp steel bars (6), the lifting structure lifts the warp steel bars (6) to a state where they are in contact with the latitude steel bars (7); The stabilizing mechanism, under the drive of the driving mechanism, locks the locking sleeve (806) on the weft steel bar (7) through an electromagnetic lock installed in the locking sleeve (806), thereby locking the position of the operating box (8); Then, the intersection of the weft steel bar (7) and the warp steel bar (6) is welded by a welding gun; After the box girder reinforcement skeleton formed by the weft reinforcement bars (7) and the warp reinforcement bars (6) is formed, the box girder reinforcement skeleton is driven by the second transmission mechanism and the third transmission mechanism to enter the reinforcement frame (2). The mobile pedestal (101) transports the box girder steel frame located in the steel frame (2) to the concrete pouring area; And put it into the stainless steel hydraulic mold; After pouring is completed, the mobile base (101) moves along the steel track (102) into the steam curing shed (103) for curing.

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