Welding tool for bridge steel structure prefabricated part
The welding fixture for precast bridge steel structures, which combines limiting and vibration mechanisms, solves the problem of component warping and displacement during welding, improves welding accuracy and joint quality, reduces costs and potential risks, and adapts to diverse production needs.
Patent Information
- Application Number
- CN202511398561.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2025-12-12
AI Technical Summary
The lack of limiting and fixing during the welding process of existing bridge steel prefabricated components leads to deformation problems such as warping and displacement of components, which affects welding accuracy and quality, increases correction costs, and poses a risk of joint cracking.
The welding fixture for precast bridge steel structures combines a limiting mechanism and a vibration mechanism. The steel plate is fixed by a limiting frame and a clamping plate. The vibration motor drives the vibration wheel to generate high-frequency micro-vibration, which relieves welding thermal stress. The angle adjustment mechanism can be used to adapt to different welding requirements.
It effectively reduces welding deformation, improves welding accuracy and joint mechanical properties, reduces correction costs, enhances the reliability of prefabricated structures, and adapts to diverse production scenarios.
Smart Images
Figure CN121104409A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bridge steel structure, and particularly relates to a bridge steel structure prefabricated part welding tool. BACKGROUND
[0002] The bridge steel structure prefabricated part is a core component for bearing load and ensuring structural stability in bridge engineering, covering steel box girders, steel truss girders, connecting plates, reinforcing ribs and various types, and the manufacturing precision and welding quality directly determine the bearing capacity and service life of the bridge. In the production process of the prefabricated part, in order to improve the structural strength of the key part, auxiliary structures such as reinforcing plates and rib plates are often welded on the surface of the steel component body. In view of production efficiency and welding operability, the industry generally adopts the process mode of "first offline prefabricated welding and then final assembly welding", that is, the reinforcing plate and the like are first preliminarily welded and formed into a small structure in a special work station, and then transferred to an assembly work station for final assembly welding with the main body of the bridge steel structure.
[0003] However, in the offline prefabricated welding link of the reinforcing plate and the like, the existing process is to directly place the to-be-welded steel structure on the ordinary support table for operation, and no corresponding limiting and fixing structure is set according to the shape and size of the component. Since the steel structure will generate local thermal stress due to the high temperature of the electric arc in the welding process, the component lacking of constraint is prone to deformation problems such as warping and deviation under the action of thermal stress. Such deformation not only leads to the decrease of the assembly precision of the reinforcing plate and the main body structure, increases the correction cost of subsequent assembly welding, but also may cause cracks and other quality problems due to uneven stress of the welding joint, seriously affecting the overall mechanical properties and engineering applicability of the prefabricated part.
[0004] Therefore, the present application provides a bridge steel structure prefabricated part welding tool to solve the above problems. SUMMARY
[0005] The present application aims to provide a bridge steel structure prefabricated part welding tool, which solves the technical problems proposed in the background art.
[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a bridge steel structure prefabricated part welding tool, comprising a workbench, a mechanical arm welding machine and two support frames are arranged at the upper end of the workbench, a limiting mechanism is arranged above the support frame, an angle adjusting mechanism and a vibration mechanism are arranged between the support frame and the limiting mechanism; The limiting mechanism comprises a limiting frame, a pressing plate located on the inner side of the limiting frame and a pressing knob located above the limiting frame, a limiting groove is formed in the rear inner wall of the limiting frame, and the rear side end of the pressing plate extends into the limiting groove and is connected with the limiting groove in a sliding manner; The vibration mechanism comprises a sliding plate located inside the support frame and a vibration motor fixed to the rear end of the left side support frame, a vibration wheel is arranged below the sliding plate, a rotating rod is rotationally connected to the inner wall of the front side of the support frame, the front end of the rotating rod extends through the rear wall of the support frame and extends to the rear side of the support frame in sequence, the output end of the vibration motor is fixedly connected to the rear end of the left rotating rod, the vibration wheel is fixedly connected to the rotating rod, a transmission chain is arranged between the two rotating rods, a sprocket is arranged on the rotating rod, and the two sprockets are drivingly connected through the transmission chain.
[0007] Preferably, the pressing knob is fixedly connected to the pressing screw rod at the lower end, the pressing screw rod extends through the upper side wall of the limiting frame and is rotationally connected to the pressing plate at the lower end, and the pressing screw rod is threadedly connected to the upper side wall of the limiting frame.
[0008] Preferably, the front and rear inner walls of the support frame are both provided with sliding grooves, the front and rear ends of the sliding plate extend into the front and rear sliding grooves respectively, the lower inner wall of the sliding groove is fixedly connected to a limiting sliding rod, the upper end of the limiting sliding rod extends through the sliding plate and is fixedly connected to the upper inner wall of the sliding groove, a abutting spring is sleeved on the limiting sliding rod, and the upper and lower ends of the abutting spring are fixedly connected to the upper inner wall of the sliding groove and the upper end of the sliding plate respectively.
[0009] Preferably, the upper end of the sliding plate is fixedly connected to a support plate, the support plate is hingedly connected to a connecting plate at the upper end, the connecting plate is fixedly connected to the lower end of the limiting frame at the upper end, one end of the angle adjusting mechanism is connected to the lower end of the limiting frame, and the other end of the angle adjusting mechanism is connected to the support plate.
[0010] Preferably, the angle adjusting mechanism comprises an angle adjusting screw rod and an internally-threaded adjusting cylinder, a connecting block is rotationally connected to the upper end of the angle adjusting screw rod and the lower end of the internally-threaded adjusting cylinder, the upper end of the connecting block is hingedly connected to the lower end of the limiting frame, the lower end of the connecting block is hingedly connected to the side wall of the support plate, the lower end of the angle adjusting screw rod extends into the internally-threaded adjusting cylinder and is threadedly connected to the internally-threaded adjusting cylinder, and a position locking plate is threadedly connected to the angle adjusting screw rod.
[0011] Preferably, the rear end of the limiting frame is fixedly connected to two auxiliary plates, a moving slide is formed in the rear wall of the limiting frame, a bottom supporting plate is arranged between the two auxiliary plates, the front end of the bottom supporting plate extends to the inside of the limiting frame through the moving slide, and the lower end of the bottom supporting plate abuts against the lower inner wall of the limiting frame.
[0012] Preferably, the outer side of the two auxiliary plates is provided with an adjusting handle, one end of the adjusting handle near the auxiliary plate is rotationally connected with a position adjusting lead screw, the position adjusting lead screw penetrates through the auxiliary plate away from the angle adjusting mechanism side and the bottom supporting plate in sequence and is rotationally connected with the auxiliary plate near the angle adjusting mechanism side, and the position adjusting lead screw is threadedly connected with the bottom supporting plate.
[0013] Preferably, the outer side wall of the vibrating wheel is provided with a plurality of protrusions, and the lower end of the sliding plate and the outer side end of the protrusion are arc-shaped.
[0014] Compared with the related art, the bridge steel structure prefabricated part welding tooling provided by the present application has the following beneficial effects: 1. The bridge steel structure prefabricated part welding tooling provided by the present application utilizes the limiting frame to provide circumferential positioning for the component, and the bottom supporting plate can accurately adapt to the support requirements of components of different sizes through the position adjusting lead screw, thereby avoiding placement deviation; the rotating compression knob drives the compression lead screw to move downward, which can drive the compression plate to stably slide along the limiting groove and compress the top of the steel plate to be welded, thereby effectively offsetting the welding thermal stress when the plate is welded, reducing deformation problems such as warping and deviation, reducing subsequent correction costs, and ensuring the fitting accuracy of the prefabricated part and the main structure.
[0015] 2. The bridge steel structure prefabricated part welding tooling provided by the present application, the vibration mechanism drives the rotating rod through the vibration motor, synchronously drives the two side vibrating wheels to rotate through the chain and sprocket, when the outer side protrusion contacts the lower end of the arc-shaped sliding plate, pushes the sliding plate to reciprocate up and down along the limiting slide rod, cooperates with the elastic reset action of the abutting spring, makes the limiting frame and the internal welding steel plate produce high-frequency micro-vibration, thereby relieving the welding residual stress, avoiding joint crack hazards, greatly improving the mechanical properties of the welding joint, and enhancing the structural reliability of the prefabricated part.
[0016] 3. The bridge steel structure prefabricated part welding tooling provided by the present application is provided with an angle adjusting mechanism between the limiting mechanism and the vibration mechanism, thereby adjusting the included angle between the two steel plates to be welded, thereby being able to adapt to the welding requirements of different types of prefabricated parts such as reinforcing plates and rib plates, improving the adaptability of the tooling to diversified production scenarios, and eliminating the need for frequent tooling replacement. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a rear side view structure schematic diagram of the vibration mechanism of the present application; Figure 3 It is an angle adjusting mechanism display structure schematic diagram of the present application; Figure 4 It is a rear side view structure schematic diagram of the limiting mechanism of the present application; Figure 5 The application provides a welding device for a bridge steel structure prefabricated part Figure 4 The enlarged view of A in the figure; Figure 6 The figure is a schematic view of a sliding groove position profile structure.
[0018] In the figure: 1, workbench; 2, mechanical arm welding machine; 3, support frame; 4, vibration mechanism; 401, vibration motor; 402, rotating rod; 403, vibration wheel; 404, transmission chain; 405, sliding groove; 406, limiting sliding rod; 407, abutting spring; 408, sliding plate; 409, support plate; 410, connecting plate; 5, limiting mechanism; 501, limiting frame; 502, compression screw; 503, compression knob; 504, compression plate; 505, limiting groove; 506, auxiliary plate; 507, moving slide; 508, position adjusting screw; 509, bottom supporting plate; 510, adjusting handle; 6, angle adjusting mechanism; 601, angle adjusting screw; 602, internally threaded adjusting cylinder; 603, position locking plate; 604, connecting block. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application. EMBODIMENT Please refer to Figure 1 - Figure 6 The application provides a technical solution: a bridge steel structure prefabricated part welding device, which comprises a workbench 1, the upper end of the workbench 1 is provided with a mechanical arm welding machine 2 and two support frames 3, the upper part of the support frame 3 is provided with a limiting mechanism 5, and the support frame 3 and the limiting mechanism 5 are provided with an angle adjusting mechanism 6 and a vibration mechanism 4; The limiting mechanism 5 comprises a limiting frame 501, a compression plate 504 located on the inner side of the limiting frame 501 and a compression knob 503 located above the limiting frame 501, a limiting groove 505 is formed in the rear inner wall of the limiting frame 501, and the rear side end of the compression plate 504 extends into the limiting groove 505 and is in sliding connection with the limiting groove 505; The vibrating mechanism 4 comprises a sliding plate 408 located inside the support frame 3 and a vibrating motor 401 fixed to the rear end of the left side support frame 3, a vibrating wheel 403 is arranged below the sliding plate 408, a rotating rod 402 is rotationally connected to the inner wall of the front side of the support frame 3, the front side end of the rotating rod 402 penetrates the vibrating wheel 403 and the rear side wall of the support frame 3 in sequence and extends to the rear side of the support frame 3, the output end of the vibrating motor 401 is fixedly connected with the rear side end of the left rotating rod 402, the vibrating wheel 403 is fixedly connected with the rotating rod 402, a transmission chain 404 is arranged between the two rotating rods 402, chain wheels are arranged on the rotating rods 402, and the two chain wheels are transmissionally connected through the transmission chain 404; a plurality of protrusions are arranged on the outer wall of the vibrating wheel 403, and the lower end of the sliding plate 408 and the outer end of the protrusion are both arc-shaped; after welding is completed, the rotating rod 402 is driven by the vibrating motor 401, the two vibrating wheels 403 are synchronously driven to rotate by the transmission chain 404 and the chain wheels, the outer protrusion is in contact with the lower end of the arc-shaped sliding plate 408, the sliding plate 408 is pushed to reciprocate up and down along the limiting sliding rod 406, and the elastic reset action of the abutting spring 407 is cooperated, so that the limiting frame 501 and the internal welded steel plate generate high-frequency micro-vibration, welding residual stress is relieved, joint crack hidden dangers are avoided, the mechanical properties of the welded joint are greatly improved, and the structural reliability of the prefabricated part is enhanced; The front and rear inner walls of the support frame 3 are both provided with sliding grooves 405, the front and rear ends of the sliding plate 408 extend into the front and rear sliding grooves 405 respectively, the lower inner wall of the sliding groove 405 is fixedly connected with a limiting sliding rod 406, the upper end of the limiting sliding rod 406 penetrates the sliding plate 408 and is fixedly connected with the upper inner wall of the sliding groove 405, the limiting sliding rod 406 is sleeved with an abutting spring 407, the upper and lower ends of the abutting spring 407 are fixedly connected with the upper inner wall of the sliding groove 405 and the upper end of the sliding plate 408 respectively, the upper end of the sliding plate 408 is fixedly connected with a support plate 409, the support plate 409 is hingedly connected with a connecting plate 410, the upper end of the connecting plate 410 is fixedly connected with the lower end of the limiting frame 501, one end of the angle adjusting mechanism 6 is connected with the lower end of the limiting frame 501, and the other end of the angle adjusting mechanism 6 is connected with the support plate 409; The lower end of the pressing knob 503 is fixedly connected with a pressing screw rod 502, the lower end of the pressing screw rod 502 penetrates the upper side wall of the limiting frame 501 and is rotationally connected with a pressing plate 504, and the pressing screw rod 502 is threadedly connected with the upper side wall of the limiting frame 501; when the position of the steel plate to be welded is fixed, the pressing knob 503 is rotated, the pressing plate 504 is driven by the pressing screw rod 502 to move downward, the upper end of the steel plate is pressed by the pressing plate 504, the position of the steel plate to be welded is fixed by the cooperation of the bottom supporting plate 509, the pressing plate 504 and the limiting frame 501, the deformation problems such as warping and deviation are reduced, the subsequent correction cost is reduced, and the cooperation accuracy of the prefabricated part and the main structure is ensured.
[0020] Embodiment two Please refer to Figures 1-5 On the basis of the first embodiment, the present application provides a technical solution: the angle adjusting mechanism 6 comprises an angle adjusting screw rod 601 and an internally threaded adjusting cylinder 602, the upper end of the angle adjusting screw rod 601 and the lower end of the internally threaded adjusting cylinder 602 are both rotatably connected with a connecting block 604, the upper end connecting block 604 is hingedly connected with the lower end of the limiting frame 501, the lower end of the lower end connecting block 604 is hingedly connected with the side wall of the support plate 409, the lower end of the angle adjusting screw rod 601 extends into the internally threaded adjusting cylinder 602 and is threadedly connected with the internally threaded adjusting cylinder 602, and a position locking plate 603 is threadedly connected with the angle adjusting screw rod 601; in use, the welding angle of the two steel plates is adjusted, in the adjustment, the internally threaded adjusting cylinder 602 is rotated, the internally threaded adjusting cylinder 602 and the angle adjusting screw rod 601 are cooperated to adjust the inclination angle of the limiting frame 501.
[0021] The rear side end of the limiting frame 501 is fixedly connected with two auxiliary plates 506, a moving slide 507 is formed on the rear side wall of the limiting frame 501, a bottom supporting plate 509 is arranged between the two auxiliary plates 506, the front side end of the bottom supporting plate 509 passes through the moving slide 507 and extends to the inner side of the limiting frame 501, the lower end of the bottom supporting plate 509 abuts against the lower side inner wall of the limiting frame 501, the outer side of the two auxiliary plates 506 is provided with an adjusting handle 510, one end of the adjusting handle 510 close to the auxiliary plate 506 is rotatably connected with a position adjusting screw rod 508, the position adjusting screw rod 508 successively penetrates through the auxiliary plate 506 away from the side of the angle adjusting mechanism 6 and the bottom supporting plate 509 and is rotatably connected with the auxiliary plate 506 close to the side of the angle adjusting mechanism 6, the position adjusting screw rod 508 is threadedly connected with the bottom supporting plate 509, in use, the adjusting handle 510 and the position adjusting screw rod 508 are cooperated to drive the bottom supporting plate 509 to move along the moving slide 507, so that the position of the to-be-welded steel plate can be adjusted while the to-be-welded steel plate is supported.
[0022] Working principle: in use, the angle of the two steel plates is adjusted, during the adjustment, the inner threaded adjusting cylinder 602 is rotated, the angle of the limiting frame 501 is adjusted through the cooperation of the inner threaded adjusting cylinder 602 and the angle adjusting screw rod 601, after the angle is adjusted, the two steel plates are respectively placed in the two limiting frames 501, the adjusting handle 510 is rotated, the position adjusting screw rod 508 is driven to rotate through the adjusting handle 510, and then the bottom supporting plate 509 is driven to move, the steel plates to be welded are supported by the bottom supporting plate 509, and the two steel plates to be welded are moved close to each other by the cooperation of the adjusting handle 510 and the position adjusting screw rod 508 through the bottom supporting plate 509, when the two steel plates are close to meet the welding requirements, the pressing knob 503 is rotated, the pressing plate 504 is driven to move downward through the pressing screw rod 502, and then the upper end of the steel plate is pressed by the pressing plate 504, the position of the steel plate to be welded is fixed through the cooperation of the bottom supporting plate 509, the pressing plate 504 and the limiting frame 501, the deformation problems such as warping and deviation are reduced, the subsequent correction cost is reduced, the cooperation precision of the prefabricated part and the main structure is guaranteed; after the two steel plates are welded by the mechanical arm welding machine 2, the rotating rod 402 is driven by the vibration motor 401, the two side vibration wheels 403 are driven to rotate through the transmission chain 404 and the sprocket, when the protrusions on the outer side of the vibration wheel 403 contact the lower end of the arc-shaped sliding plate 408, the sliding plate 408 is pushed to reciprocate up and down along the limiting sliding rod 406, the limiting frame 501 and the internal welded steel plate are subjected to high-frequency micro-vibration through the elastic reset action of the abutting spring 407, and then the welding residual stress is relieved, the joint crack hidden danger is avoided, the mechanical properties of the welded joint are greatly improved, and the structural reliability of the prefabricated part is enhanced.
[0023] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the statement "comprises... specified elements", does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the specified elements.
[0024] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A welding fixture for precast steel components of bridges, comprising a workbench (1), characterized in that: The upper end of the workbench (1) is provided with a robotic arm welding machine (2) and two support frames (3). A limit mechanism (5) is provided above the support frame (3). An angle adjustment mechanism (6) and a vibration mechanism (4) are provided between the support frame (3) and the limit mechanism (5). The limiting mechanism (5) includes a limiting frame (501), a pressing plate (504) located inside the limiting frame (501), and a pressing knob (503) located above the limiting frame (501). A limiting groove (505) is provided on the inner rear wall of the limiting frame (501). The rear end of the pressing plate (504) extends into the limiting groove (505) and is slidably connected to the limiting groove (505). The vibration mechanism (4) includes a sliding plate (408) located inside the support frame (3) and a vibration motor (401) fixed to the rear end of the left support frame (3). A vibration wheel (403) is provided below the sliding plate (408). A rotating rod (402) is rotatably connected to the inner wall of the front side of the support frame (3). The front end of the rotating rod (402) passes through the vibration wheel (403) and the rear wall of the support frame (3) in sequence and extends to the rear side of the support frame (3). The output end of the vibration motor (401) is fixedly connected to the rear end of the left rotating rod (402). The vibration wheel (403) is fixedly connected to the rotating rod (402). A transmission chain (404) is provided between the two rotating rods (402). A sprocket is provided on the rotating rod (402). The two sprockets are connected by transmission chain (404).
2. The welding fixture for prefabricated steel components of a bridge according to claim 1, characterized in that: The lower end of the clamping knob (503) is fixedly connected to a clamping screw (502). The lower end of the clamping screw (502) passes through the upper side wall of the limiting frame (501) and is rotatably connected to the clamping plate (504). The clamping screw (502) is threadedly connected to the upper side wall of the limiting frame (501).
3. The welding fixture for prefabricated bridge steel structures according to claim 1, characterized in that: The support frame (3) has sliding grooves (405) on both the front and rear inner walls. The front and rear ends of the sliding plate (408) extend into the sliding grooves (405) on both the front and rear sides respectively. The lower inner wall of the sliding groove (405) is fixedly connected to a limiting slide rod (406). The upper end of the limiting slide rod (406) passes through the sliding plate (408) and is fixedly connected to the upper inner wall of the sliding groove (405). A retaining spring (407) is sleeved on the limiting slide rod (406). The upper and lower ends of the retaining spring (407) are fixedly connected to the upper inner wall of the sliding groove (405) and the upper end of the sliding plate (408) respectively.
4. The welding fixture for prefabricated steel components of a bridge according to claim 3, characterized in that: The upper end of the sliding plate (408) is fixedly connected to a support plate (409), and the upper end of the support plate (409) is hinged to a connecting plate (410). The upper end of the connecting plate (410) is fixedly connected to the lower end of the limiting frame (501). One end of the angle adjustment mechanism (6) is connected to the lower end of the limiting frame (501), and the other end of the angle adjustment mechanism (6) is connected to the support plate (409).
5. The welding fixture for prefabricated steel components of a bridge according to claim 3, characterized in that: The angle adjustment mechanism (6) includes an angle adjustment screw (601) and an internal thread adjustment cylinder (602). The upper end of the angle adjustment screw (601) and the lower end of the internal thread adjustment cylinder (602) are rotatably connected to a connecting block (604). The upper connecting block (604) is hinged to the lower end of the limiting frame (501), and the lower end of the lower connecting block (604) is hinged to the side wall of the support plate (409). The lower end of the angle adjustment screw (601) extends into the internal thread adjustment cylinder (602) and is threadedly connected to the internal thread adjustment cylinder (602). A position locking plate (603) is threadedly connected to the angle adjustment screw (601).
6. The welding fixture for prefabricated bridge steel structures according to claim 1, characterized in that: Two auxiliary plates (506) are fixedly connected to the rear end of the limiting frame (501). A movable slide (507) is provided on the rear side wall of the limiting frame (501). A bottom support plate (509) is provided between the two auxiliary plates (506). The front end of the bottom support plate (509) passes through the movable slide (507) and extends to the inner side of the limiting frame (501). The lower end of the bottom support plate (509) abuts against the lower inner wall of the limiting frame (501).
7. The welding fixture for prefabricated bridge steel structures according to claim 6, characterized in that: An adjustment handle (510) is provided on the outer side of the two auxiliary plates (506). The end of the adjustment handle (510) near the auxiliary plate (506) is rotatably connected to a position adjustment screw (508). The position adjustment screw (508) passes through the auxiliary plate (506) away from the angle adjustment mechanism (6) and the bottom support plate (509) in sequence and is rotatably connected to the auxiliary plate (506) near the angle adjustment mechanism (6). The position adjustment screw (508) is threadedly connected to the bottom support plate (509).
8. The welding fixture for prefabricated steel components of a bridge according to claim 1, characterized in that: The outer wall of the vibrating wheel (403) is provided with several protrusions, and the lower end of the sliding plate (408) and the outer end of the protrusions are both arc-shaped.