A circular reinforcing steel bending and welding platform and an operating method thereof

Abstract

The application discloses a circular reinforcing steel bar bending and welding platform and an operating method thereof, which comprises a supporting table, inner positioning nails, a surrounding pressing mechanism and locking mechanisms. The supporting table is provided with circular inner positioning nails. The surrounding pressing mechanism is installed on the supporting table and walks along the outer side of the inner positioning nails in a circular manner, and is used for bending the reinforcing steel bar along the circular inner positioning nails. The locking mechanisms are arranged on the supporting table in a spaced manner and along the inner side of the inner positioning nails, and are used for locking the reinforcing steel bar on the supporting table. After the reinforcing steel bar is positioned at a starting position by the surrounding pressing mechanism, the reinforcing steel bar is bent in a circular manner around the circular inner positioning nails to form a ring shape, and the locking mechanisms are used for locking, so that automatic circular winding is realized. After positioning, the welding of the overlapping part of the reinforcing steel bar is conveniently and quickly realized, the welding quality and the manufacturing quality of the circular reinforcing steel bar are improved, the dimensional error of the circular reinforcing steel bar is reduced, electric winding is realized, time and labor are saved, manual winding is not needed, the precision is better, and the safety is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of annular steel bar bending and welding equipment, and relates to an annular steel bar bending and welding platform and an operating method thereof. Background Art

[0002] Railway and highway construction requires the use of a large number of steel cages, which are made of circular steel bars. The circular steel bars are made of steel bars of a set length that are bent into the desired ring structure. The most common ring structures are circular rings and flat rings. If they are directly wound into rings and welded manually, when the diameter of the steel bar is large, there is no support point, making it difficult to achieve circumferential bending, and it is difficult to ensure the bending quality and weld the two free ends. Moreover, some circular steel bars are not circular, especially the flat ring structure. It is difficult to ensure the quality of the flat bending for the second time, which makes it difficult to position and weld during the welding process of the steel cage. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a ring steel bar bending welding platform and an operating method thereof, which can achieve the bending quality of the ring steel bar, reduce the welding difficulty of the ring steel bar in the steel cage welding process and improve the welding quality.

[0004] The technical solution adopted by the present invention is: a ring-shaped steel bar bending and welding platform, including a support platform, an inner positioning pin, a surrounding pressing mechanism and a locking mechanism. A ring-shaped inner positioning pin is provided on the support platform. The surrounding pressing mechanism is installed on the support platform and moves in a ring around the outer side of the inner positioning pin, and is used to bend the steel bar along the ring-shaped inner positioning pin. A plurality of locking mechanisms are arranged at intervals on the support platform and arranged in a ring along the inner side of the inner positioning pin, and are used to lock the steel bar on the support platform.

[0005] Furthermore, the above-mentioned annular steel bar bending and welding platform also includes a starting positioning platform that is detachably fixed to the support platform. The starting positioning platform is located outside the inner positioning pin of the ring. The starting positioning platform is used to position the starting position of the steel bar. A limiting groove is provided on one side of the starting positioning platform connecting to the steel bar, and the other side is a sloped surface.

[0006] Furthermore, the above-mentioned surrounding pressing mechanism includes an annular extrusion wheel, a sliding plate and an annular slide rail. The annular extrusion wheel is rotatably connected to the rotating shaft, the rotating shaft is fixedly connected to the L-shaped sliding plate, the sliding plate passes through the annular through groove provided on the support platform and is fixedly connected to the slider. The annular slide rail used in conjunction with the slider is fixedly connected to the bottom of the support platform and is consistent with the shape of the annular inner positioning pin and parallel inside and outside. The sliding plate is connected to a driving motor, and the driving motor is fixedly connected to a driving gear. The annular rack meshing with the driving gear is fixedly connected to the bottom of the support platform and is located on the inner side of the annular slide rail.

[0007] Furthermore, the above-mentioned locking mechanism includes a pressing hook and a driving hydraulic cylinder. A "7"-shaped bent hook portion is provided at the upper end of the pressing hook, which passes through the through hole on the support platform through the upper and middle part and is hinged to the support platform at this point. The hinge between the pressing hook and the support platform is located on the inner side of the annular inner positioning nail and the pressing hook is located in the gap between two adjacent inner positioning nails. The lower end of the pressing hook is hinged to the cylinder rod of the driving hydraulic cylinder, and the tail end of the cylinder seat of the driving hydraulic cylinder is hinged to the hinge seat at the top of the support platform. After the driving hydraulic cylinder is extended, the pressing hook can be pushed downward to press the steel bar onto the support platform and contact the inner positioning nail.

[0008] Furthermore, a detection sensor is installed in front of each of the above-mentioned locking mechanisms. The detection sensor is fixedly connected to the bottom of the support platform and the probe can face the driving gear.

[0009] Furthermore, the length of the pressing hook provided at the starting position of the locking mechanism is sufficient to press the overlapping height of the two steel bars.

[0010] Furthermore, a locking mechanism is provided at the starting position of the slope surface.

[0011] Furthermore, the sliding plate is provided with an upward dust collecting hood, which is fixedly connected to the lower end of the sliding plate and is connected to the negative pressure dust collecting device through a negative pressure pipe.

[0012] Furthermore, the upper end of the sliding plate is a bent structure, and the installed annular pressing wheel tilts and presses the steel bars at the corner of the inner positioning nail and the support platform, and the rotating shaft is connected to the inclined plate of the sliding plate through an elastic telescopic spring mechanism.

[0013] The operation method of a circular steel bar bending and welding platform is as follows: insert a section of steel bar into the limiting groove of the slope surface, the surrounding pressing mechanism starts to move from the starting position, and presses the steel bar to contact the inner positioning pin and the support platform, moves to the set position, and the locking mechanism locks the steel bar. The surrounding pressing mechanism continues to press and locks after moving to the next position until it passes the slope surface. The annular pressing roller presses the steel bar along the slope, and the starting point of the slope is locked. When it reaches the overlapping position, the annular pressing roller presses the end steel bar horizontally to overlap the starting end of the steel bar, and the locking device at the end presses and locks the two overlapping sections of steel bar. After the fixing is completed, the two sections of steel bar are welded. After the welding is completed, it is removed and the next circular steel bar is bent and welded.

[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention positions the steel bar at the starting position through a surrounding pressing mechanism, and then bends it in a ring shape around the annular inner positioning pin, and uses a locking mechanism to lock it, thereby realizing automatic ring winding. After positioning is completed, welding at the overlapped joint of the steel bar can be realized conveniently and quickly, thereby improving the welding quality and the production quality of the annular steel bar, and reducing the dimensional error of the annular steel bar. The electric winding saves time and labor, and does not require manual winding, with better accuracy, higher safety, and better bending quality, ensuring that the bending curvature and circumference dimensions can meet the welding requirements of the steel cage. After positioning, the two free ends of the steel bar are welded, and welding is easy. The welding point is not subject to external force during the welding process, which can ensure the welding stability of the welding point, greatly improve the welding quality, and also improve the welding quality and welding size of the steel cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the ring steel bar bending and welding platform;

[0016] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0017] Figure 3 Schematic diagram of the structure of the locking mechanism;

[0018] Figure 4 This is a schematic diagram of the end surface structure of the starting positioning platform;

[0019] Figure 5 This is a schematic diagram of the top view of the circular steel bar bending and welding platform. DETAILED DESCRIPTION

[0020] The invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1: Figures 1 to 5As shown, a ring-shaped steel bar bending and welding platform includes a square support platform 1, an inner positioning nail 2, a surrounding pressing mechanism 3 and a locking mechanism 4. The support platform 1 is provided with a ring-shaped inner positioning nail 2, and the surrounding pressing mechanism 3 is installed on the support platform 1 and walks in a ring around the outer side of the inner positioning nail 2 to bend the steel bar 5 along the ring-shaped inner positioning nail 2. The locking mechanism 4 adopts a plurality of locking mechanisms 4, which are arranged at intervals on the support platform 1 and arranged in a ring along the inner side of the inner positioning nail 2 to lock the steel bar 5 on the support platform 1. The ring-shaped steel bar bending and welding platform is mainly designed to surround flat or ring-shaped structures. Four short columns 10 are fixedly connected near the four corners of the bottom of the support platform 1. The four short columns 10 are connected to the top frame 11. The top frame 11 is provided with longitudinal and transverse beams near the middle. The longitudinal and transverse beams are fixed by the middle column 12 It is fixedly connected to the bottom of the support platform 1, so that the support platform remains an integral structure after the annular groove is set. The top frame 11 is connected to the four support legs 13, and the four support legs 13 are symmetrically and detachably fixedly connected to the bottom of the top frame 11, that is, the top end of the support leg 13 is inserted into the positioning rod 14 set at the bottom of the top frame 11 and locked with bolts 15. The detachable connection method can replace different support platforms for replacement and use, which reduces costs. A cross beam 16 is fixedly connected between two adjacent support legs 13, and a cross beam 17 is used to fix the four support legs 13. The bottom end of the column 13 is fixedly connected with an anchor bolt 18. The cross beam and the cross beam are set to improve the stability of the support frame. The anchor bolts are set to improve the support stability and adjust the height to adapt to the unevenness of the ground.

[0022] In order to achieve rapid positioning, a ring-shaped steel bar bending and welding platform also includes a starting positioning platform 6 that is detachably fixed to the support platform 1. The starting positioning platform 6 is located on the outside of the inner positioning pin 2 of the ring. The starting positioning platform 6 is used to locate the starting position of the steel bar 5. A limiting groove 7 is provided on one side of the starting positioning platform 6 that connects to the steel bar 5, and a slope surface 8 is provided on the other side. The starting end of the steel bar is inserted into the limiting groove 7 to achieve axial positioning and lateral positioning of the initial end. After winding one circle, the steel bar is overlapped through the transition of the slope surface. The overlap is more stable and the detachable structure can perform circular bending for different steel bar sizes.

[0023] In order to stably realize the bending and encircling of the steel bar around the annular inner positioning nail to form an annular structure, the encircling pressing mechanism 3 includes an annular extrusion wheel 301, a sliding plate 302 and an annular slide rail 303. The annular extrusion wheel 301 is rotatably connected to the rotating shaft 304, and the rotating shaft 304 is fixedly connected to the L-shaped sliding plate 302. The sliding plate 302 passes through the annular groove 305 set on the support platform 1 and is fixedly connected to the slider 306. The annular slide rail 303 used in conjunction with the slider 306 is fixedly connected to the bottom of the support platform 1 and is connected to the annular inner positioning nail. The shape of the positioning pin 2 remains consistent and parallel inside and outside. The sliding plate 302 is connected to a driving motor 307, and the driving motor 307 is fixedly connected to a driving gear 308. The annular rack 309 meshing with the driving gear 308 is fixedly connected to the bottom of the support platform 1 and is located on the inner side of the annular slide rail 303. Driven by the gear rack, the sliding plate is driven to move around the annular slide rail, and then the annular extrusion wheel is driven to perform circular extrusion. The extrusion is smooth and reliable, fast and stable, and the annular extrusion wheel rotates automatically to reduce friction and reduce the possibility of damage to the steel bars.

[0024] In order to quickly achieve locking, the locking mechanism 4 includes a pressing hook 401 and a driving hydraulic cylinder 402. A "7"-shaped bent hook portion 403 is provided at the upper end of the pressing hook 401, which passes through the through hole 404 on the support platform 1 through the middle and upper part and is hinged to the support platform 1 at this location. The hinged connection between the pressing hook 401 and the support platform 1 is located on the inner side of the annular inner positioning nail 2 and the pressing hook 401 is located in the gap between the two adjacent inner positioning nails 2. The lower end of the pressing hook 401 is hinged to the cylinder rod of the driving hydraulic cylinder 402, and the tail end of the cylinder seat of the driving hydraulic cylinder 402 is hinged to the hinged seat 40 at the top of the support platform 1. 5, after driving the hydraulic cylinder 402 to extend, the pressing hook 401 can be used to press the steel bar 5 downward on the support platform 1 and contact the inner positioning nail 2. The locking mechanism of this structure can stably fix the steel bar at the corner of the support platform and the inner positioning nail. The "7"-shaped bending hook is more reliable for pressing and locking. The size meets the requirements of being able to gather the combined force of the steel bar at the corner of the support platform and the inner positioning nail just after rotation, thereby improving the bending circumference accuracy and locking reliability of the steel bar. The pressing hook 401 is bent downward at the hinge seat, and this structure is more conducive to connecting the hydraulic cylinder after passing through the support platform.

[0025] In order to lock the steel bars at different positions after pressing, a detection sensor 9 is installed in front of each locking mechanism 4. The detection sensor 9 is fixedly connected to the bottom of the support platform 1 and the probe can face the driving gear 308. The pressing of the steel bar is detected by the detection sensor. After pressing, a distance is set and the locking mechanism is controlled to lock. The detection sensor 9 is connected to the controller. The controller is connected to the driving hydraulic cylinder and driving motor of the locking device. After detecting the driving motor and traveling the set distance, the driving hydraulic cylinder can be automatically controlled to lock the steel bar.

[0026] Since the overlapping steel bars at both ends need to be welded at the starting position, the length of the pressing hook 401 set at the starting position of the locking mechanism 4 meets the requirements of pressing the overlapping height of the two steel bars 5, thereby meeting the requirements of pressing the two steel bars and improving the welding stability.

[0027] A locking mechanism 4 is provided at the starting position of the slope surface 8, which is more conducive to the transition pressing and overlapping of the slope surface, avoiding the slope surface from tilting when it is pressed to the horizontal level, and improving stability.

[0028] In order to prevent the dust generated during the pressing process from affecting the environment, the sliding plate 302 is provided with an upward dust collecting hood 310. The dust collecting hood 310 is fixedly connected to the lower end of the sliding plate 302 and is connected to the negative pressure dust collecting device 312 through the negative pressure pipe 311. During the pressing process, the iron filings and dust generated can just fall into the dust collecting hood, and the negative pressure effect makes it easier to collect, greatly improving the working environment.

[0029] In order to adapt to the transition of the end of the steel bar, the upper end of the sliding plate 302 is a bent structure, and the installed annular pressing wheel 301 tilts and presses the steel bar 5 at the corner of the inner positioning nail 2 and the support platform 1. The rotating shaft 304 is connected to the inclined plate of the sliding plate 302 through an elastic telescopic spring mechanism 313. The elastic telescopic spring mechanism 313 includes a guide rod 314 and a reset spring 315. The through hole 316 where the rotating shaft 304 is connected to the inclined plate is a strip hole. The rotating shaft 304 is embedded in the through hole and uses a square head to cooperate with it for guidance. The square head is fixedly connected to the guide rod The nut 317 is connected to the guide rod 314 at one end and the other end passes through the length direction of the through hole and is connected to the limit nut 317. The return spring 315 is sleeved on the guide rod 314 and both ends are against the square head and one end of the through hole. When the structure encounters a force greater than the pressure of the return spring, it retreats. The initial force of the return spring can meet the need of pressing the steel bars. The structure cooperates with the inclined pressing of the steel bars to achieve transitional pressing at the overlap of the steel bars, thereby improving safety and reliability. The structure is more conducive to the overlap of the two ends of the circular ring. The pressing wheel with an elastic slope is also convenient for disassembling the welded annular steel bars.

[0030] Example 2: An operating method of a ring-shaped steel bar bending and welding platform is as follows: insert a section of steel bar into the limiting groove of the slope surface, the surrounding pressing mechanism starts to move from the starting position, and presses the steel bar to contact the inner positioning pin and the support platform, moves to the set position, and the locking mechanism locks the steel bar. The surrounding pressing mechanism continues to press and locks after moving to the next position until it passes the slope surface. The annular pressing roller presses the steel bar along the slope, and the starting point of the slope is locked. When it reaches the overlapping position, the annular pressing roller presses the end steel bar horizontally to overlap the starting end of the steel bar, and the locking device at the end presses and locks the two overlapping sections of steel bar. After the fixing is completed, the two sections of steel bar are welded. After the welding is completed, it is removed and the next ring steel bar is bent and welded.

[0031] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A ring-shaped steel bar bending and welding platform, characterized by: The invention comprises a support platform (1), an inner positioning pin (2), a surrounding pressing mechanism (3) and a locking mechanism (4); the support platform (1) is provided with an annular inner positioning pin (2); the surrounding pressing mechanism (3) is installed on the support platform (1) and moves in an annular manner around the outer side of the inner positioning pin (2) and is used to bend the steel bar (5) along the annular inner positioning pin (2); a plurality of locking mechanisms (4) are arranged at intervals on the support platform (1) and arranged in an annular manner along the inner side of the inner positioning pin (2) and are used to lock the steel bar (5) on the support platform (1); It also includes a starting positioning platform (6) detachably fixedly connected to the support platform (1), the starting positioning platform (6) is located outside the annular inner positioning nail (2), the starting positioning platform (6) is used to locate the starting position of the steel bar (5), and a limiting groove (7) is provided on one side of the starting positioning platform (6) that is connected to the steel bar (5), and a slope surface (8) is provided on the other side. The surrounding pressing mechanism (3) includes an annular extrusion wheel (301), a sliding plate (302) and an annular slide rail (303), wherein the annular extrusion wheel (301) is rotatably connected to a rotating shaft (304), and the rotating shaft (304) is fixedly connected to an L-shaped sliding plate (302), and the sliding plate (302) passes through an annular through groove (305) provided on the support platform (1) and is fixedly connected to a slider (306), and the annular slide rail (303) used in conjunction with the slider (306) is fixedly connected to the bottom of the support platform (1) and is consistent in shape with the annular inner positioning pin (2), and the sliding plate (302) is connected to a driving motor (307), and the driving motor (307) is fixedly connected to a driving gear (308), and an annular rack (309) meshing with the driving gear (308) is fixedly connected to the bottom of the support platform (1) and is located inside the annular slide rail (303); The locking mechanism (4) includes a pressing hook (401) and a driving hydraulic cylinder (402). A "7"-shaped bent hook portion (403) is provided at the upper end of the pressing hook (401). The upper middle portion of the pressing hook (401) passes through the through hole (404) on the support platform (1) and is hinged to the support platform (1) on one side of the through hole (404). The hinged portion between the pressing hook (401) and the support platform (1) is located inside the annular inner positioning nail (2) and the pressing hook (401) is located in the gap between two adjacent inner positioning nails (2). The lower end of the pressing hook (401) is hinged to the cylinder rod of the driving hydraulic cylinder (402). The rear end of the cylinder seat of the driving hydraulic cylinder (402) is hinged to the hinge seat (405) at the bottom of the support platform (1). After the driving hydraulic cylinder (402) is retracted, the pressing hook (401) can be moved downward to press the steel bar (5) onto the support platform (1) and contact the inner positioning nail (2).

2. The annular steel bar bending and welding platform according to claim 1, characterized in that: A detection sensor (9) is installed in front of each locking mechanism (4). The detection sensor (9) is fixedly connected to the bottom of the support platform (1) and the probe can face the driving gear (308).

3. The annular steel bar bending and welding platform according to claim 1, characterized in that: The length of the pressing hook (401) provided at the starting position of the locking mechanism (4) is sufficient to press the overlapping height of the two steel bars (5).

4. The annular steel bar bending and welding platform according to claim 1, characterized in that: A locking mechanism (4) is provided at the starting position of the slope surface (8).

5. The annular steel bar bending and welding platform according to claim 1, characterized in that: The sliding plate (302) is provided with an upward-facing dust collecting hood (310), which is fixedly connected to the lower end of the sliding plate (302) and connected to the negative pressure dust collecting device (312) via a negative pressure pipe (311).

6. The annular steel bar bending and welding platform according to claim 1, characterized in that: The upper end of the sliding plate (302) is a bent structure, and the installed annular extrusion wheel (301) tilts and presses the steel bar (5) at the corner between the inner positioning pin (2) and the support platform (1). The rotating shaft (304) is connected to the inclined plate of the sliding plate (302) through an elastic telescopic spring mechanism (313).

7. The method for operating a ring-shaped steel bar bending and welding platform according to claim 4, characterized in that: The method is as follows: a section of steel bar is inserted into a limiting groove on a slope surface; a surrounding pressing mechanism starts to move from a starting position and presses the steel bar to contact an inner positioning pin and a support platform; when it moves to a set position, a locking mechanism locks the steel bar; the surrounding pressing mechanism continues to press and moves to the next position and then locks; until it passes through the slope surface, the annular extrusion wheel presses the steel bar along the slope and the starting point of the slope surface is locked; when it reaches the overlapping position, the annular extrusion wheel presses the end steel bar horizontally to overlap the starting end of the steel bar, and the locking mechanism at the end presses and locks the two overlapping sections of steel bar; after the fixing is completed, the two sections of steel bar are welded; after the welding is completed, the steel bar is removed and the bending welding of the next annular steel bar is performed.

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