Bridge steel box supporting mechanism and welding auxiliary tool containing same

Abstract

The present application relates to the technical field of bridge steel box production, and particularly relates to a bridge steel box supporting mechanism and a welding auxiliary tool containing the same, which comprises a fixing frame, a notch opened in the middle of the fixing frame, a lead screw, which is rotationally installed at both ends of the top of the fixing frame in axial symmetry, a box body, which is movably placed on the top of the fixing frame, and the number of which is two, and the two abut against each other and the abutting position is in the middle of the notch, a clamping plate, which is movably arranged at both ends of the fixing frame in axial symmetry and movably abuts against one side of the box body, and a clamping assembly, which is arranged on one side of the fixing frame and is used for driving the two clamping plates to move horizontally. The bridge steel box supporting mechanism provided by the present application can push the two box bodies to move to the middle by the clamping assembly, so that the abutment is more compact, the gap between the two is reduced, and the subsequent welding quality is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge steel box production technology, and in particular to a bridge steel box support mechanism and welding auxiliary tooling containing the mechanism. Background Technology

[0002] Bridge steel box girders are typically used as the main beams or main tower structures of bridges. Their core feature is the "box-shaped cross-section," resembling a closed steel box. They are mainly composed of steel components such as cover plates, web plates, diaphragms, and stiffening ribs. Bridge steel box girders cannot be manufactured using a one-piece molding process, and welding is the only feasible way to achieve their structural integration. Compared with bolted connections and riveting, welded joints have higher strength, comparable to the strength of the steel itself, ensuring that the steel box does not break or loosen at the joints under long-term stress and complex working conditions.

[0003] During welding, the two sections of bridge steel box structure are first placed on the welding fixing table and pressed together at both ends. Then, welding tools are used to weld the gap between the two sections of steel box to make them a whole. However, the gap between the two sections of steel box will be large during the placement and pressing process, which will directly lead to a significant increase in welding difficulty and cause welding quality defects. Ultimately, it will affect the structural strength, sealing and durability of the bridge steel box, and the quality after welding will be seriously affected. Summary of the Invention

[0004] Therefore, it is necessary to provide a bridge steel box support mechanism and a welding auxiliary tooling containing the mechanism to address the above-mentioned technical problems and reduce the gap between steel boxes and improve the welding quality.

[0005] The present invention provides a bridge steel box girder support mechanism, including a fixed frame and a slot opened in the middle of the fixed frame, and further including: a lead screw, which is axially symmetrically rotatably installed at both ends of the top of the fixed frame;

[0006] The box body is movably placed on top of the fixed frame, and the number of two boxes is set to abut against each other with the abutment point located in the middle of the slot;

[0007] The clamping plates are axially symmetrically movable at both ends of the fixed frame and movably abut against one side of the box body;

[0008] A clamping assembly is located on one side of the fixed frame and is used to drive the two clamping plates to move laterally.

[0009] In one embodiment, the clamping assembly includes a rotating rod that laterally moves through the fixing frame. Both ends of the rotating rod are threaded, and the two threads rotate in opposite directions. The clamping plate is movably disposed outside the threads.

[0010] In one embodiment, a fixed frame is axially symmetrically fixed at both ends of the fixed bracket, and a movable rod is movably disposed within the fixed frame. The end of the movable rod away from the fixed frame is fixedly connected to one side of the clamping plate.

[0011] In one embodiment, a pressure ring is movably sleeved on the outer side of the lead screw, the bottom of the pressure ring is movably abutting against the top of the housing, and the tops of the two lead screws are connected by belt drive.

[0012] In one embodiment, a gear is fixedly sleeved on the outside of the rotating rod, and a rack is fixedly provided on one side of the pressure ring, with the gear meshing with the rack for transmission.

[0013] In one embodiment, two grooves are provided at both ends of the top of the fixing frame, and the number of grooves is set to four. Limiting plates are movably arranged in the grooves, and the sidewalls of the two limiting plates on one side are movably fitted with the sidewall of the box.

[0014] In one embodiment, the bottoms of the plurality of limiting plates are connected together by a lifting plate, the lifting plate moves up and down relative to the fixed frame, and a lifting rod is fixedly provided at the bottom of the lifting plate, the lifting rod being movably connected to the lifting plate.

[0015] In one embodiment, a horizontal plate is fixedly installed inside the fixed frame, and the end of the lifting rod away from the lifting plate moves through the horizontal plate. A return spring is fixedly installed between the lifting plate and the horizontal plate, and the return spring is movably sleeved on the outside of the lifting rod.

[0016] In one embodiment, a positioning plate is fixedly installed on the fixing frame below the horizontal plate, and a movable plate is slidably disposed on the positioning plate. An inclined groove is opened on one side of the movable plate, and the end of the lifting rod away from the lifting plate is movably abutting against the inclined groove.

[0017] In one embodiment, vertical plates are axially symmetrically installed at both ends of the positioning plate, and movable plates are fixedly installed at both ends of the movable plate. The movable plates and the vertical plates are fixedly connected by positioning springs.

[0018] In one embodiment, the movable plate has a notch at the end away from the inclined groove, and an abutment plate is fixedly provided on one side of the pressure ring, with the abutment plate at the end away from the pressure ring movably abutting against the notch.

[0019] In one embodiment, a welding auxiliary tooling includes the aforementioned bridge steel box support mechanism.

[0020] The aforementioned bridge steel box girder support mechanism and welding auxiliary fixture containing the mechanism can, through the clamping assembly, push the girder at both ends to move closer to the center, making them fit more tightly, reducing gaps, and improving subsequent welding quality; by moving the limiting plate upward, the girder can be clamped in the middle, ensuring that there is no deviation during the slight movement of the girder by the clamping plate, avoiding adverse effects on subsequent welding quality; by moving the pressure ring downward, the top of the girder can be fixed against it, and the centering movement of the clamping plate and the limiting plate can be used to limit the position of the girder can also be realized, making the operation convenient and quick. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 for Figure 1 Enlarged diagram of part A in the middle;

[0024] Figure 3 This is a structural schematic diagram of the invention from another perspective;

[0025] Figure 4 for Figure 3 Enlarged diagram of section B;

[0026] Figure 5 This is a schematic diagram of the reset spring in this invention.

[0027] Figure label:

[0028] 1. Fixed frame; 101. Groove; 102. Recess; 2. Lead screw; 3. Housing; 4. Clamping plate; 5. Clamping assembly; 51. Rotating rod; 52. Thread; 6. Fixed frame; 7. Movable rod; 8. Pressure ring; 9. Belt; 10. Gear; 11. Rack; 12. Limiting plate; 13. Lifting plate; 14. Lifting rod; 15. Horizontal plate; 16. Return spring; 17. Positioning plate; 18. Movable plate; 181. Inclined groove; 182. Notch; 19. Vertical plate; 20. Moving plate; 21. Positioning spring; 22. Abutment plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0034] The following is combined with Figures 1-5 This invention describes a bridge steel box girder support mechanism and welding auxiliary tooling containing the mechanism.

[0035] like Figures 1-4 As shown, in one embodiment, a bridge steel box support mechanism includes a fixed frame 1 and a slot 101 opened in the middle of the fixed frame 1, and also includes a lead screw 2, which is axially symmetrically rotated and installed at both ends of the top of the fixed frame 1.

[0036] The box 3 is movably placed on top of the fixed frame 1, and the quantity is set to two, with the two abutting each other and the abutting point located in the middle of the slot 101;

[0037] The clamping plates 4 are axially symmetrically and movable at both ends of the fixed frame 1, and movably abut against one side of the box body 3;

[0038] The clamping assembly 5 is located on one side of the fixed frame 1 and is used to drive the two clamping plates 4 to move laterally.

[0039] Specifically, before welding, the two box sections 3 are placed on top of the fixing frame 1, with the box sections 3 abutting against each other. The gap at the abutting point of the two box sections 3 is located at the groove 101. This facilitates the subsequent welding treatment of the bottom of the gap. When welding is required on the gap of the box section 3, the clamping assembly 5 is used to drive the clamping plates 4 at both ends to move closer to each other. During the movement of the clamping plates 4 closer to each other, one side will abut against one side of the box section 3, thereby driving the box sections 3 at both ends to press against each other, making the gap smaller, improving the subsequent welding quality, and enhancing the strength of the box section 3 after welding.

[0040] See Figure 1 As shown, in this embodiment, the clamping assembly 5 includes a rotating rod 51, which moves laterally through the fixed frame 1. Both ends of the rotating rod 51 are provided with threads 52, and the two threads 52 rotate in opposite directions. The clamping plate 4 is movably disposed outside the threads 52.

[0041] Specifically, when welding is required, first rotate the rotating rod 51. The rotation of the rotating rod 51 will drive the threads 52 at both ends to rotate. Since the threads 52 at both ends rotate in opposite directions, the rotation of the rotating rod 51 will drive the clamping plates 4 at both ends to move closer to each other, which can push the box 3 on both sides to move closer to the center, so that the box 3 fits more tightly, reduces gaps, and enhances welding quality.

[0042] See Figure 1 and Figure 3 As shown, in this embodiment, a fixed frame 6 is axially symmetrically fixed at both ends of the fixed frame 1, and a movable rod 7 is movably arranged inside the fixed frame 6. The end of the movable rod 7 away from the fixed frame 6 is fixedly connected to one side of the clamping plate 4.

[0043] Specifically, when the clamping plates 4 at both ends move towards the center under the rotation of the rotating rod 51, the movable rod 7 will move towards the inside of the fixed frame 6. This ensures the stability of the clamping plates 4 during movement and prevents them from rotating with the rotation of the rotating rod 51 and the thread 52, thus maintaining linear movement.

[0044] See Figure 1 As shown, in this embodiment, a pressure ring 8 is movably sleeved on the outer side of the lead screw 2, and the bottom of the pressure ring 8 is movably abutting against the top of the housing 3. The tops of the two lead screws 2 are connected by a belt 9.

[0045] Specifically, before welding, the motor of one of the lead screws 2 is started. The motor drives the lead screw 2 to rotate, and through the transmission action of the belt 9, it will drive the other lead screw 2 to rotate synchronously. The rotation of the lead screw 2 will drive the pressure ring 8 to move downward. The downward movement of the pressure ring 8 will squeeze and limit the top of the box 3, which can ensure that the box 3 remains stable and does not deviate during the welding process, thus ensuring the welding quality.

[0046] See Figure 1 As shown, in this embodiment, a gear 10 is fixedly sleeved on the outside of the rotating rod 51, and a rack 11 is fixedly installed on one side of the pressure ring 8. The gear 10 and the rack 11 mesh and drive each other.

[0047] Specifically, when the pressure ring 8 moves downward to press and position the housing 3, the rack 11 also moves downward. The rack 11 first meshes with the gear 10, thereby driving the gear 10 and the rotating rod 51 to rotate. The rotation of the rotating rod 51 will drive the clamping plates 4 at both ends to move closer to each other, pushing the housing 3 to a tighter fit and reducing gaps. Subsequently, the pressure ring 8 continues to move downward, the rack 11 does not mesh with the gear 10, and the rotating rod 51 and the clamping plate 4 remain stationary to avoid excessive pressure from the clamping plate 4 on the housing 3. Finally, the pressure ring 8 descends to the bottom and abuts against the top of the housing 3, which can finally position the housing 3 and has a better limiting effect. The gear 10 meshes with the rack 11 before the pressure ring 8 abuts against the housing 3 to prevent the clamping plate 4 from being unable to push the housing 3 to move slightly after the pressure ring 8 limits the housing 3.

[0048] See Figure 1 and Figure 3 As shown, in this embodiment, two grooves 102 are provided at both ends of the top of the fixing frame 1, and the number of grooves 102 is set to four. Limiting plates 12 are movably arranged in the grooves 102, and the side walls of the two limiting plates 12 on one side are movably attached to the side wall of the box 3.

[0049] Specifically, before the clamping plate 4 and the pressure ring 8 come into contact with the box body 3, the limiting plate 12 moves upward along the groove 102. The two limiting plates 12 on one side clamp the box body 3 on the same side inside. Then, the clamping plate 4 abuts against the box body 3 and pushes the box body 3 to move, which can prevent the box body 3 from shifting during the movement. Finally, the pressure ring 8 abuts against the top of the box body 3, so that the limiting effect of the box body 3 is the best.

[0050] See Figure 3 and Figure 5As shown, in this embodiment, the bottoms of multiple limiting plates 12 are connected together by lifting plates 13. The lifting plates 13 move up and down relative to the fixed frame 1. A lifting rod 14 is fixedly installed at the bottom of the lifting plates 13, and the lifting rod 14 is movably connected to the lifting plates 13.

[0051] Specifically, in the initial state, the top of the limiting plate 12 is flush with the top of the groove 102, which makes it convenient to place the box 3 on the top of the fixing frame 1. After the box 3 is placed, the lifting rod 14 is moved upward along the fixing frame 1. The upward movement of the lifting rod 14 will drive the lifting plate 13 and the four limiting plates 12 to move upward. The limiting plates 12 can limit the subsequent slight movement of the box 3 to avoid movement deviation and affect the subsequent welding.

[0052] See Figure 5 As shown, in this embodiment, a horizontal plate 15 is fixedly installed inside the fixed frame 1, and the end of the lifting rod 14 away from the lifting plate 13 moves through the horizontal plate 15. A return spring 16 is fixedly installed between the lifting plate 13 and the horizontal plate 15, and the return spring 16 is movably sleeved on the outside of the lifting rod 14.

[0053] Specifically, after the box 3 is placed, the lifting rod 14 moves upward, which will drive the lifting plate 13 and the limiting plate 12 to move upward synchronously. The limiting plate 12 can limit the box 3. During this process, the return spring 16 will be stretched, and the horizontal plate 15 provides support for the return spring 16. When it is necessary to release the limitation of the limiting plate 12 on the box 3, the upward force applied to the lifting rod 14 is removed. Under the action of the return spring 16, the lifting rod 14, the lifting plate 13 and the limiting plate 12 can be pulled down to the initial position.

[0054] See Figures 2-5 As shown, in this embodiment, a positioning plate 17 is fixedly installed on the fixed frame 1 below the horizontal plate 15. A movable plate 18 is slidably arranged on the positioning plate 17. An inclined groove 181 is opened on one side of the movable plate 18. The end of the lifting rod 14 away from the lifting plate 13 is movably abutted against the inclined groove 181.

[0055] Specifically, before welding, the bottom of the lifting rod 14 abuts against the lower part of the inclined groove 181 opened in the movable plate 18. First, the movable plate 18 is moved laterally along the positioning plate 17. The lateral movement of the movable plate 18 will drive the inclined groove 181 to move synchronously. The lifting rod 14 moves upward relative to the inclined groove 181, which will drive the lifting plate 13 and the limiting plate 12 to move upward. The limiting plate 12 will limit the housing 3. During this process, the return spring 16 is in a stretched state. Similarly, when it is necessary to release the limiting plate 12 from the housing 3, the movable plate 18 is moved in the opposite direction. Under the action of the return spring 16 returning to its original state, the lifting plate 13 and the limiting plate 12 will be pulled downward to their initial positions.

[0056] See Figure 2 and Figure 4 As shown, in this embodiment, vertical plates 19 are axially symmetrically installed at both ends of the positioning plate 17, and movable plates 20 are fixedly installed at both ends of the movable plate 18. The movable plates 20 and the vertical plates 19 are fixedly connected by positioning springs 21.

[0057] Specifically, during the movement of the movable plate 18 relative to the positioning plate 17, it will drive the movable plate 20 to move synchronously. When the movable plate 18 moves towards the direction of the lifting rod 14 (the lifting rod 14 is upward relative to the inclined groove 181), the movement of the movable plate 20 will compress the positioning spring 21. The vertical plate 19 provides support for the positioning spring 21. When the force applied to the movable plate 18 is removed, the movable plate 18 will be pushed to move in the opposite direction under the action of the positioning spring 21, so that the lifting plate 13 and the limiting plate 12 will move downward to the initial position.

[0058] See Figure 3 As shown, in this embodiment, the movable plate 18 has a notch 182 at the end away from the inclined groove 181, and an abutment plate 22 is fixedly provided on one side of the pressure ring 8. The end of the abutment plate 22 away from the pressure ring 8 is in movable contact with the notch 182.

[0059] Specifically, when welding the housing 3, the screw 2 rotates, causing the pressure ring 8 to move downwards. The downward movement of the pressure ring 8 causes the abutment plate 22 to move downwards and first abut against the notch 182 of the movable plate 18, thereby pushing the movable plate 18 towards the lifting rod 14. This causes the lifting rod 14, the lifting plate 13, and the limiting plate 12 to move upwards. The upward movement of the limiting plate 12 limits the housing 3. Subsequently, the pressure ring 8 continues to move downwards, driving the gear 10 to rotate through the rack 11, making the clamping plate 4 push the housing 3 to abut more tightly, reducing the gap and improving the subsequent welding quality. Finally, the pressure ring 8 moves downwards and abuts against the top of the housing 3, strengthening the limiting effect on the housing 3 and ensuring that the housing 3 will not shift during the welding process, thus avoiding affecting the welding quality.

[0060] In this embodiment, a welding auxiliary tooling includes the aforementioned bridge steel box support mechanism.

[0061] Specifically, the welding auxiliary tooling includes the aforementioned support structure and a welding robot will be set up to weld the gaps between the boxes 3, so that they can be formed into a whole.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A bridge steel box girder support mechanism, comprising a fixing frame and a slot formed in the middle of the fixing frame, characterized in that, Also includes: The lead screw is axially symmetrically rotated and mounted at both ends of the top of the fixed frame; The box body is movably placed on top of the fixed frame, and the number of two boxes is set to abut against each other with the abutment point located in the middle of the slot; The clamping plates are axially symmetrically movable at both ends of the fixed frame and movably abut against one side of the box body; A clamping assembly, located on one side of the fixed frame, is used to drive the two clamping plates to move laterally. The clamping assembly includes a rotating rod that moves laterally through the fixed frame. Both ends of the rotating rod are threaded, and the two threads rotate in opposite directions. The clamping plates are movably disposed on the outside of the threads. A pressure ring is movably sleeved on the outside of the lead screw, and the bottom of the pressure ring movably abuts against the top of the housing. The tops of the two lead screws are connected by a belt drive. A gear is fixedly sleeved on the outside of the rotating rod, and a rack is fixedly disposed on one side of the pressure ring. The gear and the rack mesh for transmission. Two grooves are opened at both ends of the top of the fixed frame. Limiting plates are movably disposed in the grooves. The sidewalls of two limiting plates on one side are movably fitted against the sidewall of the housing. The bottoms of multiple limiting plates are connected together by a lifting plate, which moves up and down relative to the fixed frame. The lifting plate is fixedly provided with a lifting rod at its bottom. A horizontal plate is fixedly installed inside the fixed frame. The end of the lifting rod away from the lifting plate passes through the horizontal plate. A return spring is fixedly installed between the lifting plate and the horizontal plate. The return spring is movably sleeved on the outside of the lifting rod. A positioning plate is fixedly installed below the horizontal plate in the fixed frame. A movable plate is slidably provided on the positioning plate. An inclined groove is opened on one side of the movable plate. The end of the lifting rod away from the lifting plate is movably abutted against the inclined groove. Vertical plates are axially symmetrically installed at both ends of the positioning plate. Moving plates are fixedly provided at both ends of the movable plate. The moving plates are fixedly connected to the vertical plates by positioning springs. A notch is opened at the end of the movable plate away from the inclined groove. An abutting plate is fixedly provided on one side of the pressure ring. The end of the abutting plate away from the pressure ring is movably abutted against the notch.

2. The bridge steel box girder support mechanism according to claim 1, characterized in that, The fixed frame is axially symmetrically fixed at both ends of the fixed frame, and a movable rod is movably arranged inside the fixed frame. The end of the movable rod away from the fixed frame is fixedly connected to one side of the clamping plate.

3. A welding auxiliary tooling, characterized in that, It includes the bridge steel box girder support mechanism as described in any one of claims 1-2.

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