Machining treatment device for steel structure bridge

Abstract

The invention relates to the technical field of steel structure machining, in particular to a steel structure bridge machining treatment device which comprises a machining table, a rotating roller, a lifting mechanism, an auxiliary mechanism and a machining mechanism. The machining table is of a box structure and provides a mounting and supporting foundation for the whole device. The rotating rollers are evenly and rotationally connected to the top of the machining table and used for bearing and assisting the steel structure in moving. The lifting mechanism is arranged in the machining table, can ascend and descend relative to the machining table and is used for jacking the steel structure to be separated from the rotating roller and limiting movement of the steel structure. A to-be-cut steel structure is directly placed on the surface of the rotating roller at the top of the machining table, stable transfer of the steel structure in the length direction of the machining table is achieved through the rolling characteristic of the rotating roller, and the steel structure can be driven to accurately move to a plasma cutting preset position manually or through a driving component without assistance of a hoisting tool; and in the transferring process, the steel structure is always kept in a horizontal posture, cutting reference deviation caused by hoisting shaking is avoided, a foundation is laid for precise positioning of plasma cutting, meanwhile, the workpiece transferring time before machining is greatly shortened, and the thermal cutting machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of steel structure processing technology, and in particular to a processing device for steel structure bridges. Background Technology

[0002] In the field of steel structure bridge processing, plasma cutting of heavy steel structure components (such as I-beams and thick steel plates) requires extremely high workpiece movement efficiency, fixation stability, and continuous transport. However, existing processing technologies still have many problems that urgently need to be solved. Firstly, the transfer of heavy steel structures relies on hoisting tools, making it difficult to balance operational efficiency and precision. Current processing methods require the use of cranes, overhead cranes, and other hoisting equipment to transfer heavy steel structures. This not only involves cumbersome procedures but also exposes the workpiece to potential damage or deformation due to swaying and collisions during hoisting. Furthermore, the limited positioning accuracy of hoisting tools makes it difficult to directly and precisely transfer the workpiece to the preset position for plasma cutting, typically requiring manual adjustments. This significantly extends the processing preparation cycle and hinders overall processing efficiency.

[0003] Secondly, the lack of effective positioning during the processing of heavy steel structures results in insufficient stability. Current methods for fixing heavy steel structures largely rely on their own gravity for "natural stability," without a dedicated positioning structure. When plasma cutting both sides of the steel structure, the cutting impact force easily causes the workpiece to move towards the opposite side, making it impossible to guarantee posture stability during processing. This leads to cutting trajectory deviation, affecting processing accuracy and making it difficult to meet the high-precision processing requirements of steel bridge components.

[0004] Third, even when some technologies employ rotating rollers to transport steel structures, there are still shortcomings in adaptability and guidance. In existing solutions that use rotating rollers to move steel structures, the coefficient of friction between the rollers and the steel structure remains constant. For heavy steel structures, insufficient friction can easily lead to slippage and unstable transport; for light steel structures, excessive friction can cause transport jamming, resulting in poor adaptability. Furthermore, the lack of effective lateral guidance structures when the steel structure moves on the rotating rollers causes the workpiece to easily deviate along the transport direction, requiring repeated position calibration and severely restricting the continuity and stability of the processing flow. Summary of the Invention

[0005] The purpose of this invention is to provide a processing device for steel structure bridges, which solves the problems in the existing steel structure bridge processing, such as the reliance on hoisting tools for heavy steel structure transfer leading to cumbersome operation and insufficient precision, the lack of positioning structure during processing making it easy to move laterally due to the impact force of plasma cutting, and the poor adaptability of the fixed friction coefficient and the lack of effective lateral guidance during the conveying of rotating rollers, which makes it easy to deviate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A processing device for steel structure bridges includes a processing table, a rotating roller, a lifting mechanism, an auxiliary mechanism, and a processing mechanism. The processing table has a box-like structure, providing a foundation for the installation and support of the entire device. The rotating roller is uniformly rotatably connected to the top of the processing table, used to support and assist the movement of the steel structure. The lifting mechanism is located inside the processing table and can be raised and lowered relative to the processing table, used to lift the steel structure to disengage it from the rotating roller and to restrict the movement of the steel structure. The auxiliary mechanism is configured in conjunction with the rotating roller to adjust the friction between the rotating roller and the steel structure. The processing mechanism is located on the side wall of the processing table and is used to perform processing operations on the steel structure. The processing mechanism can move along the length of the processing table to adjust the processing position.

[0007] Preferably, the lifting mechanism includes a connecting plate, a first driving component, a guide assembly, a support plate, and a limiting assembly; the connecting plate is slidably disposed within the processing table, and the first driving component drives the connecting plate to rise and fall; the support plate is slidably disposed on the top of the connecting plate through the guide assembly, and the second driving component finely adjusts the height of the support plate, allowing the support plate to extend through a long slot at the top of the processing table; the limiting assembly is disposed on the support plate and is used to laterally limit the steel structure.

[0008] Preferably, the limiting component includes a limiting rod, a guide block, and a spring; the support plate has a circular groove, the guide block slides in the circular groove, and the spring connects the bottom end of the circular groove to the guide block; the limiting rod is slidably inserted into the circular groove, and a circular block is fixedly installed at its bottom.

[0009] Preferably, the circular block is rotatably connected to the guide block.

[0010] Preferably, the auxiliary mechanism includes a support cylinder, an annular airbag, a rubber column, and an air tube; the rotating roller has connecting shafts integrally formed at both ends, both the rotating roller and the connecting shafts are tubular structures, and the rotating roller is rotatably connected to the processing table through the connecting shafts; the support cylinder is fixedly disposed inside the rotating roller, the annular airbags are evenly disposed on the surface of the support cylinder, and through holes are evenly opened on the surface of the rotating roller corresponding to the positions of the annular airbags; the rubber column is fixedly disposed on the outer circumferential surface of the annular airbag, and the rubber column is adapted to the size of the through hole and inserted into the through hole; the air tube is fixedly inserted through the connecting shaft and extends into the interior of the rotating roller, and is used to deliver or extract gas to the annular airbag to control the rubber column to extend or retract into the through hole.

[0011] Preferably, the trachea surface is uniformly connected with branch tubes, each branch tube corresponding to a ring-shaped airbag, and the branch tubes pass through the support cylinder and connect to the ring-shaped airbag to achieve precise connection between the trachea and the ring-shaped airbag.

[0012] Preferably, the auxiliary mechanism further includes an adapter and a connecting pipe; the adapter is rotatably sleeved on the end of the air pipe through the connecting shaft, and the adapter is connected to the air pipe; the adapter is fixedly connected to the processing table; and the adapters are interconnected through the connecting pipe to realize the synchronous air supply or extraction of multiple sets of air pipes.

[0013] Preferably, the processing table sidewall is provided with an inflator, which is connected to a connecting pipe. The inflator has inflation and vacuum functions and is used to inflate or vacuum the annular airbag through the connecting pipe, adapter and air pipe.

[0014] Preferably, the processing mechanism includes a robotic arm and a plasma cutting gun, the plasma cutting gun being disposed at the end of the robotic arm, the robotic arm being connected to the processing table via a sliding mechanism, the sliding mechanism being used to drive the robotic arm to move along the length direction of the processing table.

[0015] Preferably, the sliding mechanism includes a slide rail and a slider. The slide rail is fixedly disposed on the side wall of the processing table along the length direction of the processing table. The slider is slidably connected to the slide rail. The robotic arm is fixedly installed on the slider, and the slider is equipped with a drive unit to realize movement along the slide rail.

[0016] The present invention has at least the following beneficial effects: Traditionally, before plasma cutting of steel bridge structures, heavy steel structures need to be moved using hoisting equipment. This is not only prone to errors in the processing reference due to insufficient hoisting accuracy, but also requires frequent adjustments to the hoisting position to match the working range of the plasma cutting gun, making the operation cumbersome and inefficient. This device places the steel structure to be cut directly on the surface of a rotating roller on top of the processing table. The rolling characteristics of the roller enable the steel structure to be smoothly moved along the length of the processing table. Without the need for hoisting equipment, the steel structure can be manually or driven precisely to the preset plasma cutting position. During the transfer, the steel structure remains horizontal, avoiding deviations in the cutting reference caused by hoisting sway, thus laying the foundation for precise positioning during plasma cutting. It also significantly reduces the workpiece transfer time before processing, improving the efficiency of thermal cutting.

[0017] During plasma cutting, steel structures are prone to displacement and vibration due to uneven weight distribution or cutting impact, leading to deviations in the cutting trajectory. This device utilizes a lifting mechanism to construct a stable positioning support structure. A hydraulic cylinder drives the connecting plate and support plate to rise as a whole, allowing the support plate to pass through the long slot of the processing table and lift the steel structure, detaching it from the rotating roller surface to avoid interference from the transfer components. Simultaneously, the height of individual support plates can be finely adjusted using cylinders, achieving multi-point support for irregularly shaped steel structures at the bottom, ensuring uniform force and stable posture during plasma cutting. This positioning support design effectively counteracts the impact force generated by plasma cutting, prevents steel structure displacement, and ensures the cutting trajectory closely matches the design drawings, meeting the workpiece positioning accuracy requirements of thermal cutting.

[0018] This device features an adaptive clamping and limiting structure on the support plate, consisting of limiting rods, guide blocks, and springs. Before plasma cutting, when the support plate lifts the steel structure, the limiting rods in contact with the steel structure are compressed by the springs and slide into the circular grooves. The limiting rods not in contact remain extended under the support of the springs, forming flexible positioning from both sides of the steel structure. This eliminates the need for manual adjustment of the clamping components, allowing it to adapt to steel structures of different widths through its elastic adaptive characteristics. Furthermore, the lateral blocking of the limiting rods prevents the steel structure from shifting to the sides due to force during plasma cutting, while avoiding damage to the steel structure surface caused by rigid clamping. It balances clamping stability and workpiece protection, fully meeting the clamping requirements of thermal cutting.

[0019] For bridge steel structures with regular shapes such as I-beams and square tubes, plasma cutting requires a balance between "precise transfer" and "positioning stability." This device features a rotatable limiting rod structure: during the transfer of the regular steel structure, the height of the support plate is finely adjusted so that the top of the support plate is flush with the top of the rotating roller. The limiting rods on both sides adhere to the sidewalls of the steel structure and rotate synchronously with the transfer, providing lateral guidance to prevent transfer deviation without obstructing the rotation of the roller. After reaching the cutting position, the lifting mechanism drives the support plate to rise further, and the limiting rods switch to a clamping state, achieving a seamless connection between "transfer guidance" and "cutting clamping." This design eliminates the need for additional switching devices, ensuring the precision of the regular steel structure throughout the transfer and cutting process, and improving the continuity and efficiency of plasma cutting.

[0020] This device addresses the plasma cutting and conveying needs of steel structures of varying weights by adjusting the friction between the rotating rollers and the steel structure via an auxiliary mechanism: when conveying heavy steel structures, an inflator pump inflates the annular air bladder, pushing a rubber column out of its through-hole to contact the steel structure, increasing friction and preventing slippage; when conveying light steel structures, a vacuum is drawn to retract the rubber column, reducing friction and preventing jamming. This friction adjustment design ensures that bridge steel structures of different weights can be smoothly conveyed to the cutting position via the rotating rollers, avoiding cutting reference deviations caused by unstable conveying, and further enhancing the device's adaptability to plasma cutting processing scenarios. Attached Figure Description

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

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the processing table of the present invention; Figure 3 For the present invention Figure 1 Side view; Figure 4 This is a schematic diagram of the connecting plate structure of the present invention; Figure 5 This is a cross-sectional view of the support plate of the present invention; Figure 6 This is a cross-sectional view of the rotating roller of the present invention; Figure 7 This is a schematic diagram of the adapter structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point A in the middle.

[0023] In the diagram: 1. Processing table; 2. Robotic arm; 3. Lifting mechanism; 31. Connecting plate; 32. Hydraulic cylinder; 33. Air cylinder; 34. Guide shell; 35. Support plate; 36. Limiting rod; 37. Spring; 38. Guide block; 39. Round block; 4. Rotating roller; 41. Connecting shaft; 42. Through hole; 5. Auxiliary mechanism; 51. Support cylinder; 52. Annular airbag; 53. Rubber column; 54. Air pipe; 55. Adapter; 56. Connecting pipe; 57. Branch pipe; 58. Inflator. Detailed Implementation

[0024] 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, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] Reference Figure 1-8A processing device for steel structure bridges includes a processing table 1, a rotating roller 4, a lifting mechanism 3, an auxiliary mechanism 5, and a processing mechanism. The processing table 1 has a box-like structure, providing a foundation for the installation and support of the entire device. The rotating roller 4 is uniformly rotatably connected to the top of the processing table 1, used to support and assist the movement of the steel structure. The lifting mechanism 3 is located inside the processing table 1 and can be raised and lowered relative to the processing table 1, used to lift the steel structure to detach it from the rotating roller 4 and to restrict the movement of the steel structure. The auxiliary mechanism 5 is configured in cooperation with the rotating roller 4 to adjust the friction between the rotating roller 4 and the steel structure. The processing mechanism is located on the side wall of the processing table 1 and is used to perform processing operations on the steel structure. The processing mechanism can move along the length of the processing table 1 to adjust the processing position.

[0027] Furthermore, the lifting mechanism 3 includes a connecting plate 31, a first driving component, a guide assembly, a support plate 35, and a limiting assembly. The connecting plate 31 is slidably connected to the inside of the processing table 1. The first driving component is fixedly installed inside the processing table 1, and its output end is fixed to the connecting plate 31, for driving the connecting plate 31 to rise and fall along the height direction of the processing table 1. The guide assembly is uniformly fixed to the top of the connecting plate 31. The support plate 35 is slidably connected to the inside of the guide assembly, and a second driving component is provided on the surface of the connecting plate 31 at a position corresponding to the guide assembly. The output end of the second driving component is fixed to the support plate 35, for driving the support plate 35 to move along the height direction of the guide assembly to finely adjust the height of the support plate 35. A long groove is opened at the top of the processing table 1 at a position corresponding to the position between the rotating rollers 4. The support plate 35 can extend through the long groove and out of the top of the processing table 1. The limiting assembly is set on the support plate 35 to form a lateral constraint on the steel structure.

[0028] The dual-drive design, consisting of a drive component one for overall lifting and a drive component two for fine-tuning the height of the single support plate 35, adapts to steel structures with different bottom shapes, ensuring uniform force distribution during support. The long slot provides a channel for the lifting and lowering of the support plate 35, while the limiting component proactively mitigates the risk of lateral displacement during steel structure processing or movement, laying the foundation for stable subsequent processing. Additional details: The sliding connection between the connecting plate 31 and the processing table 1 is achieved through a vertical groove on the inner wall of the processing table 1. The sliding fit between the guide component and the support plate 35 must ensure no significant gaps to prevent wobbling during fine-tuning of the support plate 35.

[0029] Furthermore, the limiting component includes a limiting rod 36, a guide block 38, and a spring 37; The support plate 35 has evenly spaced circular grooves inside. The guide block 38 is slidably connected inside the circular groove. The spring 37 is fixedly installed between the bottom end of the circular groove and the bottom end of the guide block 38. The limiting rod 36 corresponds to the circular groove one by one, and the limiting rod 36 is slidably inserted inside the circular groove. The bottom of the limiting rod 36 has an integrally formed circular block 39, and the circular block 39 is rotatably connected to the guide block 38.

[0030] The elastic support of spring 37 enables the limiting rod 36 to have self-adjusting capability—when the support plate 35 lifts the steel structure, the limiting rod 36 in contact with the steel structure can compress the spring 37 and retract into the circular groove, while the limiting rod 36 not in contact remains extended, forming a limit from both sides; the rotatable connection between the circular block 39 and the guide block 38 allows the limiting rod 36 to rotate synchronously with the movement of the steel structure, ensuring both lateral limiting effect and avoiding jamming of the steel structure's movement. The rotatable connection between the circular block 39 and the guide block 38 can use a clearance fit to reduce rotational friction.

[0031] Furthermore, the first driving component is a hydraulic cylinder 32, and the second driving component is a pneumatic cylinder 33. The hydraulic cylinder 32 must be selected to meet the total load-bearing requirements of the connecting plate and the upper components, and the pneumatic cylinder 33 must be selected to adapt to the fine-tuning stroke of the support plate. The guiding component is a guide shell 34, and the guide shell 34 is sized to match the support plate 35 to achieve sliding guidance.

[0032] Both hydraulic cylinder 32 and pneumatic cylinder 33 need to be equipped with independent hydraulic stations or air sources, and pressure regulating valves need to be installed to adjust the output force according to the weight of the steel structure; the inner wall of the guide shell 34 can be coated with a wear-resistant coating to extend the service life of the fit with the support plate 35.

[0033] Furthermore, the auxiliary mechanism 5 includes a support cylinder 51, an annular airbag 52, a rubber column 53, and an air pipe 54; the rotating roller 4 has connecting shafts 41 integrally formed at both ends, both the rotating roller 4 and the connecting shafts 41 are tubular structures, and the rotating roller 4 is rotatably connected to the processing table 1 through the connecting shafts 41. The rotating roller 4 can be actively rotated by a drive motor at the end of the connecting shaft 41, or passively rotated by manually pushing the steel structure, wherein the motor can be directly connected to the connecting shaft through a coupling; the support cylinder 51 is fixed The annular airbags 52 are uniformly arranged on the surface of the support cylinder 51 and are fixedly installed inside the rotating roller 4. The rotating roller 4 has through holes 42 uniformly opened at the positions corresponding to the annular airbags 52. The rubber column 53 is fixedly installed on the outer circumference of the annular airbag 52 and is adapted to the size of the through hole 42 and inserted into the through hole 42. The air pipe 54 is fixedly inserted through the connecting shaft 41 and extends into the rotating roller 4. It is used to deliver or extract gas to the annular airbag 52 to control the rubber column 53 to extend or retract into the through hole 42.

[0034] The design of the tubular rotating roller 4 and the connecting shaft 41 provides space for the installation of the air tube 54 and the support cylinder 51. The support cylinder 51 provides a fixed base for the annular airbag 52, preventing the airbag from shifting when the rotating roller 4 rotates. The cooperation between the rubber column 53 and the through hole 42 enables the switching between inflating and extending to increase friction and deflating and retracting to reduce friction, adapting to the movement needs of steel structures of different weights. The support cylinder 51 and the rotating roller 4 can be fixed by welding or bolting, ensuring coaxiality. The annular airbag 52 must be made of wear-resistant and anti-aging rubber material to prevent air leakage after long-term use. The top of the rubber column 53 can be provided with an arc-shaped contact surface to reduce frictional damage to the steel structure.

[0035] Furthermore, the surface of the trachea 54 is uniformly connected with branch pipes 57, each branch pipe 57 corresponding to an annular airbag 52, and the branch pipe 57 passes through the support cylinder 51 and connects to the annular airbag 52 to achieve precise connection between the trachea 54 and the annular airbag 52.

[0036] The one-to-one correspondence design of the branch pipes 57 ensures uniform inflation and deflation pressure for each annular airbag 52, preventing inconsistent extension of the rubber columns 53 due to insufficient or excessive pressure in a single airbag, which could affect the stability of the steel structure's movement. The connection between the branch pipes 57 and the annular airbags 52 must be sealed with sealant to prevent air leakage; the branch pipes 57 can be made of rigid plastic to prevent bending and damage during rotation with the rotating roller 4.

[0037] Furthermore, the auxiliary mechanism 5 also includes an adapter 55 and a connecting pipe 56; the adapter 55 is rotatably sleeved on the end of the air pipe 54 that passes through the connecting shaft 41, and the adapter 55 is connected to the air pipe 54. The adapter 55 is fixedly connected to the processing table 1, and each adapter 55 is interconnected with each other through the connecting pipe 56, so as to realize the synchronous air supply or air extraction of multiple sets of air pipes 54.

[0038] The rotating sleeve design of the adapter 55 allows the air pipe 54 to rotate synchronously with the rotating roller 4 while maintaining a sealed connection with the fixed adapter 55. The series design of the connecting pipe 56 enables synchronous control of all auxiliary mechanisms 5 of the rotating roller 4, eliminating the need to operate each set of air pipes 54 individually and improving operational efficiency. A sealing ring must be installed inside the adapter 55 to ensure airtightness during rotation. The connecting pipe 56 can be a flexible hose, which allows for easy adjustment of its direction according to the size of the processing table 1.

[0039] Furthermore, the side wall of the processing table 1 is provided with an inflator 58, which is connected to the connecting pipe 56. The inflator 58 has the functions of inflation and vacuuming, and is used to inflate or vacuum the annular airbag 52 through the connecting pipe 56, adapter 55 and air pipe 54. The inflator 58 adopts the NJ300-EP pulse vacuum inflation integrated machine.

[0040] The inflator 58 has dual functions of inflation and vacuuming, directly corresponding to the extension and retraction of the rubber column 53, eliminating the need for additional vacuuming equipment and simplifying the overall structure of the device. Through the connecting pipe 56, the inflator 58 and all the annular airbags 52 are linked for control, ensuring consistent friction adjustment. The inflator 58 must be equipped with a pressure display gauge to allow operators to set appropriate inflation pressure based on the weight of the steel structure. A one-way valve must be installed at the connection between the inflator 58 and the connecting pipe 56 to prevent backflow of gas.

[0041] Furthermore, the processing mechanism includes a robotic arm 2 and a plasma cutting gun. The plasma cutting gun is disposed at the end of the robotic arm 2. The robotic arm 2 is connected to the processing table 1 through a sliding mechanism. The sliding mechanism is used to drive the robotic arm 2 to move along the length direction of the processing table 1.

[0042] The plasma cutting gun boasts advantages such as high cutting precision and speed, making it suitable for the high-precision requirements of steel structure bridge processing. The multi-degree-of-freedom adjustment capability of the robotic arm 2 can cover the processing needs of different positions on the steel structure, while the sliding mechanism further expands the processing range, enabling the device to handle longer steel structures. The robotic arm 2 must be a model with sufficient load capacity to ensure stability while driving the plasma cutting gun; the plasma cutting gun must be equipped with a cooling system to prevent overheating and damage to the gun head during prolonged cutting.

[0043] Furthermore, the sliding mechanism includes a slide rail and a slider. The slide rail is fixedly disposed on the side wall of the processing table 1 along the length direction of the processing table 1. The slider is slidably connected to the slide rail. The robotic arm 2 is fixedly installed on the slider, and the slider is equipped with a drive unit to realize movement along the slide rail. The cooperation between the slide rail and the slider provides a stable moving track for the robotic arm 2, while the drive unit enables the automated movement of the robotic arm 2 without manual pushing, improving processing efficiency and positional accuracy. The slide rail can be a linear guide rail, and a dust cover should be installed between the slider and the slide rail to prevent processing debris from entering and affecting the sliding. The drive unit can be a servo motor combined with a ball screw to achieve precise positioning of the robotic arm 2.

[0044] In summary, the steel structure to be processed is placed stably on the surface of the rotating roller 4 on the top of the processing table 1. At this time, the steel structure is only in contact with the rotating roller 4. With the help of the rolling characteristics of the rotating roller 4, the placement posture of the steel structure on the rotating roller 4 is initially adjusted to ensure that its processing surface faces the side of the plasma cutting gun.

[0045] The appropriate friction force is selected based on the weight of the steel structure. For a heavier steel structure, the inflator 58 is started to supply air to the connecting pipe 56. The air enters the air pipe 54 through the adapter 55 and then is injected into each annular airbag 52 through the branch pipe 57. After the annular airbag 52 expands, it pushes the rubber column 53 out of the through hole 42 until the top of the rubber column 53 contacts the bottom of the steel structure, increasing the friction force between the rotating roller 4 and the steel structure. For a lighter steel structure, the inflator 58 is controlled to evacuate the annular airbag 52. The annular airbag 52 contracts, causing the rubber column 53 to retract into the through hole 42, restoring the direct contact between the rotating roller 4 and the steel structure, and reducing the friction force.

[0046] The steel structure can be manually pushed or the drive component of the rotating roller 4 can be activated. For example, a motor can be installed at the end of the connecting shaft 41 to make the rotating roller 4 rotate and drive the steel structure to move along the length of the processing table 1. For steel structures with regular shapes, if it is necessary to further improve the stability of movement, the support plate 35 can be driven to move upward by the cylinder 33 so that the top of the support plate 35 is flush with the top of the rotating roller 4. At this time, the limiting rod 36 at the bottom of the steel structure is compressed by the pressure of the spring 37 and slides down with the guide block 38 into the support plate 35. The limiting rod 36 that is not in contact remains in the extended state and fits against both sides of the steel structure. Since the bottom round block 39 of the limiting rod 36 is rotatably connected to the guide block 38, the limiting rod 36 can rotate synchronously with the movement of the steel structure, which not only avoids the lateral displacement of the steel structure, but also does not hinder its movement, until the steel structure moves to the preset processing position.

[0047] After the steel structure reaches the processing position, the rotating roller 4 stops running, and the hydraulic cylinder 32 is started. The output end of the hydraulic cylinder 32 pushes the connecting plate 31 to rise along the height direction of the processing table 1. The connecting plate 31 drives the top guide shell 34 and support plate 35 to rise synchronously. The support plate 35 passes through the long groove between the rotating rollers 4 at the top of the processing table 1 and gradually approaches the bottom of the steel structure.

[0048] Observe the contact between the bottom of the steel structure and each support plate 35. If the bottom of the steel structure is irregularly shaped, for the support plates 35 that are not in contact with the steel structure, activate the corresponding cylinders 33 individually. The cylinders 33 drive the support plates 35 to move further upward along the guide shell 34 until all support plates 35 are in contact with the bottom of the steel structure, ensuring that the steel structure is subjected to uniform force. During this process, the limiting rods 36 that are in contact with the bottom of the steel structure are pressed into the circular grooves of the support plates 35, while the limiting rods 36 that are not in contact remain extended, forming lateral restraints from both sides of the steel structure to prevent the steel structure from shifting during processing. As the connecting plate 31 continues to rise, the support plates 35 completely lift the steel structure, causing the steel structure to detach from the surface of the rotating roller 4, thus completing the positioning and fixing of the steel structure.

[0049] According to the processing area of ​​the steel structure, the drive unit of the sliding mechanism, such as the servo motor on the slider, is activated. The slider slides along the slide rail on the side wall of the processing table 1, driving the robotic arm 2 to move along the length of the processing table 1. At the same time, the multi-degree-of-freedom joints of the robotic arm 2 are adjusted so that the plasma cutting gun is aligned with the processing position of the steel structure. Through the precise positioning function of the robotic arm 2, the distance and angle between the cutting gun and the processing surface are ensured to meet the processing requirements.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A processing device for steel structure bridges, characterized in that, Includes a processing table, rotating rollers, lifting mechanism, auxiliary mechanism, and processing mechanism; The processing table has a box-like structure, providing a foundation for the installation and support of the entire device; The rotating roller is uniformly connected to the top of the processing table and is used to support and assist the movement of the steel structure. The lifting mechanism is located inside the processing table and can be raised and lowered relative to the processing table. It is used to lift the steel structure to get it away from the rotating roller and to restrict the movement of the steel structure. The auxiliary mechanism is configured in conjunction with the rotating roller to adjust the friction between the rotating roller and the steel structure; The processing mechanism is located on the side wall of the processing table and is used to perform processing operations on the steel structure. The processing mechanism can move along the length of the processing table to adjust the processing position.

2. The processing device for steel structure bridges according to claim 1, characterized in that, The lifting mechanism includes a connecting plate, a driving component, a guide assembly, a support plate, and a limiting assembly; The connecting plate is slidably disposed inside the processing table, and the driving component drives the connecting plate to rise and fall. The support plate is slidably mounted on the top of the connecting plate via a guide assembly. The second drive unit finely adjusts the height of the support plate, allowing it to extend through the long slot at the top of the processing table. The limiting component is mounted on the support plate and is used to laterally limit the steel structure.

3. The processing device for steel structure bridges according to claim 2, characterized in that, The limiting component includes a limiting rod, a guide block, and a spring; The support plate has a circular groove, the guide block slides in the circular groove, and the spring connects the bottom end of the circular groove to the guide block. The limiting rod is slidably inserted into the circular groove, and a circular block is fixedly installed at the bottom.

4. The processing device for steel structure bridges according to claim 3, characterized in that, The circular block is rotatably connected to the guide block.

5. The processing device for steel structure bridges according to claim 1, characterized in that, The auxiliary mechanism includes a support cylinder, an annular airbag, a rubber column, and an air tube; The rotating roller has a connecting shaft integrally formed at both ends. Both the rotating roller and the connecting shaft are tubular structures, and the rotating roller is rotatably connected to the processing table through the connecting shaft. The support cylinder is fixedly installed inside the rotating roller, the annular airbags are evenly arranged on the surface of the support cylinder, and through holes are evenly opened on the surface of the rotating roller corresponding to the positions of the annular airbags. The rubber column is fixedly installed on the outer circumference of the annular airbag, and the rubber column is adapted to the size of the through hole and inserted into the through hole. The air tube is fixedly inserted through the connecting shaft and extends into the interior of the rotating roller, used to deliver or extract gas to the annular airbag to control the rubber column to extend or retract through the through hole.

6. The processing device for steel structure bridges according to claim 5, characterized in that, The trachea surface is uniformly connected with branch tubes, each branch tube corresponding to a ring-shaped airbag. The branch tubes pass through the support cylinder and connect to the ring-shaped airbag to achieve precise connection between the trachea and the ring-shaped airbag.

7. The processing device for steel structure bridges according to claim 6, characterized in that, The auxiliary mechanism also includes an adapter and a connecting pipe; The adapter is rotatably sleeved on the end of the air pipe through the connecting shaft, and the adapter is connected to the air pipe. The adapter is fixedly connected to the processing table, and the adapters are interconnected through connecting pipes to realize the synchronous air supply or extraction of multiple sets of air pipes.

8. The processing device for steel structure bridges according to claim 7, characterized in that, The processing table is equipped with an air inflator on its side wall. The air inflator is connected to a connecting pipe and has the functions of inflating and vacuuming. It is used to inflate or vacuum the annular airbag through the connecting pipe, adapter and air pipe.

9. The processing device for steel structure bridges according to claim 1, characterized in that, The processing mechanism includes a robotic arm and a plasma cutting gun. The plasma cutting gun is disposed at the end of the robotic arm. The robotic arm is connected to the processing table through a sliding mechanism, which is used to drive the robotic arm to move along the length of the processing table.

10. A processing device for steel structure bridges according to claim 9, characterized in that, The sliding mechanism includes a slide rail and a slider. The slide rail is fixedly installed on the side wall of the processing table along the length of the processing table. The slider is slidably connected to the slide rail. The robotic arm is fixedly installed on the slider, and the slider is equipped with a drive unit to realize movement along the slide rail.

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