A device for correcting welding deformation of a steel grating

Abstract

The utility model provides a kind of steel grating welding deformation correction device, it is related to steel grating processing technical field, including fixed base, the right side of the fixed base is equipped with clamping assembly, the clamping assembly includes telescopic cylinder being installed in the right side of fixed base, and the spacing of flexible adjustment is driven by two groups of telescopic cylinder clamping groove, can be adapted to different width steel grating, without replacing fixture, substantially improve the versatility of device and reduce the downtime of specification switching, simultaneously, four groups of auxiliary rollers in clamping groove inside convert sliding friction into rolling friction, both significantly reduce the scratch of steel grating side edge due to friction, coating drop-off etc secondary injury, reduce component wear, also can avoid the deformation of steel grating caused by excessive local pressure, and stable guide rail formed by auxiliary roller can limit steel grating lateral deviation, ensure its along preset path enters correction area, simultaneously allow small amplitude fine tuning in correction process, give consideration to positioning accuracy and operational flexibility.

Description

Technical Field

[0001] This utility model relates to the field of steel grating processing technology, and in particular to a steel grating welding deformation correction device. Background Technology

[0002] Steel grating is a mesh-like steel component made of load-bearing flat steel bars and crossbars connected by welding or press-locking. It is widely used in industrial platforms, municipal manhole covers, and other scenarios. Welded steel grating is prone to bending, warping, or twisting deformation due to uneven local high-temperature heating and cooling, structural asymmetry, and material properties during production. This deformation can lead to installation difficulties, load-bearing safety hazards, low product qualification rates, and poor efficiency and material damage due to manual correction. Therefore, it is necessary to rely on hydraulic or mechanical roller pressing devices to efficiently eliminate deformation through precise external force intervention, ensuring that the steel grating meets industry standards for flatness, load-bearing capacity, and other aspects, and satisfies installation and usage requirements.

[0003] A search revealed that the document with publication number "CN214263332U" mentions "a steel plate welding deformation correction device, comprising a base, two columns on either side of the base, a reaction beam welded between the upper ends of the two columns, a hydraulic jack in the middle of the reaction beam, the outer wall of the hydraulic jack welded to the reaction beam, the piston rod of the hydraulic jack vertically penetrating the reaction beam, and a profiled crossbeam welded below the reaction beam; a guide groove is vertically set on the opposite sides of the two columns, and the two ends of the profiled crossbeam are inserted into the two guide grooves and slide up and down along the guide grooves; a base is set on the base near both ends of the base." In use, the deformed steel plate is supported on the two bases, and the hydraulic jack drives the profiled crossbeam to apply pressure to the deformed steel plate for correction. This avoids the side effects of heat straightening on the steel plate and ensures the mechanical properties and strength of the steel structure.

[0004] However, traditional straightening devices can only be adapted to steel gratings of a single specification. When changing steel gratings of different widths, the clamps need to be changed frequently, resulting in long downtime and low production efficiency. At the same time, the clamping method is mostly sliding friction, which can easily cause scratches and coating peeling on the sides of the steel grating. Moreover, excessive local pressure can cause further deformation of the steel grating. The lack of effective guidance and fine-tuning mechanisms makes it difficult to ensure that the steel grating enters the straightening area along the preset path, affecting the straightening accuracy. Furthermore, traditional straightening devices cannot achieve precise clamping force control and uniform pressure distribution, which can lead to excessive compression or insecure fixation. This is not conducive to protecting the structural integrity of the steel grating and is difficult to support continuous straightening operations.

[0005] Therefore, we provide a steel grating welding deformation correction device to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a steel grating welding deformation correction device, which aims to solve the problems mentioned above.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A steel grating welding deformation correction device includes a fixed base, a clamping assembly installed on the right side of the fixed base, the clamping assembly including a telescopic cylinder installed on the right side of the fixed base, the output end of the telescopic cylinder being fixedly connected to a clamping groove, an auxiliary roller being rotatably connected to the inner side of the clamping groove, and a pressing assembly provided on the rear side of the fixed base, the pressing assembly including a connecting base provided on the rear side of the fixed base, the upper end of the connecting base having a sliding groove.

[0008] As a further description of the above technical solution: The fixed base and the telescopic cylinder are fixedly connected by bolts. There are two sets of telescopic cylinders. The telescopic cylinders are welded to the clamping groove. There are four sets of auxiliary rollers on the inner side of the clamping groove.

[0009] As a further description of the above technical solution: The slide groove has two sets of openings. The inner side of the connecting base is equipped with a guide roller, which is driven by a motor. The inner side of the slide groove is slidably connected to a sliding base, and there are two sets of sliding bases.

[0010] As a further description of the above technical solution: A clamping cylinder is fixedly connected to the upper end of the sliding base, and a lead screw is provided on the inner side of the sliding base. The lead screw is driven by a motor, and the two sets of sliding bases move relative to each other under the action of the motor driving the lead screw to rotate.

[0011] As a further description of the above technical solution: The output end of the clamping cylinder is fixedly connected to a connecting groove, and a clamping roller is rotatably connected to the inner side of the connecting groove. There are three sets of clamping rollers in total.

[0012] As a further description of the above technical solution: A connecting chamber is fixedly connected to the rear side of the connecting base. A hydraulic cylinder is installed at the upper end of the connecting chamber. A hydraulic pipeline is installed on the surface of the connecting chamber. A hydraulic drive device is installed at the end of the hydraulic pipeline away from the connecting chamber.

[0013] As a further description of the above technical solution: The inner side of the connecting chamber is provided with a lifting straightening roller. Both ends of the lifting straightening roller are fixedly connected to the output end of the hydraulic cylinder. A rotating straightening roller is provided below the lifting straightening roller. A meshing gear is installed on the left end of the rotating straightening roller. The meshing gear drives the rotating straightening roller to rotate through a motor-driven gear set.

[0014] Compared with the prior art, the beneficial effects of this utility model are: By setting up a clamping assembly, the clamping slots can be flexibly adjusted by two sets of telescopic cylinders, which can adapt to steel gratings of different widths without the need to change clamps. This greatly improves the versatility of the device and reduces downtime when switching specifications. At the same time, the four sets of auxiliary rollers inside the clamping slots convert sliding friction into rolling friction, which significantly reduces secondary damage such as scratches and coating peeling on the sides of the steel grating caused by friction, reduces component wear, and avoids deformation of the steel grating caused by excessive local pressure. In addition, the stable guide track formed by the auxiliary rollers can limit the lateral displacement of the steel grating, ensuring that it enters the correction area along the preset path, while allowing small fine adjustments during the correction process, balancing positioning accuracy and operational flexibility.

[0015] By setting up a clamping assembly, the sliding groove of the connecting base cooperates with the lead screw driven by the motor to achieve millimeter-level precise adjustment of the sliding base, ensuring that the two sets of sliding bases move synchronously, adapting to steel gratings of different widths and achieving centered clamping. The clamping cylinder can precisely control the clamping force through air pressure adjustment. Combined with the uniform driving force transmitted by the connecting groove and three sets of clamping rollers, the steel grating is subjected to balanced force, avoiding excessive compression or insecure fixation, and protecting the structural integrity of the steel grating. In addition, the clamping rollers and the lower guide roller form an upper and lower clamping and rolling transmission mechanism, which does not hinder the movement of the steel grating, but can continuously and stably clamp it, supporting continuous straightening operations, improving batch processing efficiency, and the rigid connection structure and low-wear rolling component design can ensure the stability of the components and extend the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic diagram of the overall rear structure of this utility model; Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model; Figure 4 This is a schematic diagram of the corrective device of this utility model.

[0017] The following are the labeling elements in the diagram: 1. Fixed base; 2. Clamping assembly; 201. Telescopic cylinder; 202. Clamping groove; 203. Auxiliary roller; 3. Pressing assembly; 301. Connecting base; 302. Slide groove; 303. Guide roller; 304. Sliding base; 305. Pressing cylinder; 306. Lead screw; 307. Connecting groove; 308. Pressing roller; 4. Connecting chamber; 5. Hydraulic cylinder; 6. Hydraulic pipeline; 7. Hydraulic drive device; 8. Lifting straightening roller; 9. Rotating straightening roller; 10. Meshing gear. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 As shown, this utility model provides a technical solution: a steel grating welding deformation correction device, including a fixed base 1, a clamping assembly 2 installed on the right side of the fixed base 1, the clamping assembly 2 including a telescopic cylinder 201 installed on the right side of the fixed base 1, the output end of the telescopic cylinder 201 is fixedly connected to a clamping groove 202, the inner side of the clamping groove 202 is rotatably connected to an auxiliary roller 203, a pressing assembly 3 is provided on the rear side of the fixed base 1, the pressing assembly 3 includes a connecting base 301 provided on the rear side of the fixed base 1, and a sliding groove 302 is provided on the upper end of the connecting base 301.

[0020] Furthermore, the fixed base 1 and the telescopic cylinder 201 are fixedly connected by bolts. There are two sets of telescopic cylinders 201. The telescopic cylinder 201 is welded to the clamping groove 202. There are four sets of auxiliary rollers 203 on the inner side of the clamping groove 202. The clamping groove 202 clamps the steel grating. The telescopic cylinder 201 extends and retracts the clamping groove 202 to adapt to steel gratings of different widths, so that the steel grating does not deviate from the fixed track. Then, by using rolling friction instead of sliding friction, the frictional resistance between the steel grating and the clamping groove 202 is reduced without affecting the clamping stability, avoiding damage to the surface of the steel grating caused by friction. At the same time, it is convenient for the steel grating to be fine-tuned during the correction process.

[0021] Furthermore, the slide 302 has two sets of guide rollers 303 installed on the inner side of the connecting base 301. The guide rollers 303 are driven by a motor. The inner side of the slide 302 is slidably connected to the sliding base 304. There are two sets of sliding bases 304. The preset groove structure provides precise movement guidance for the sliding bases 304, restricts the movement direction of the sliding bases 304, and ensures that the movement of the two sets of sliding bases 304 always remains parallel, laying the foundation for the subsequent uniform pressing of the steel grating. Driven by the motor, the guide rollers 303 are located below the steel grating and convey the steel grating to the processing position.

[0022] Furthermore, a pressing cylinder 305 is fixedly connected to the upper end of the sliding base 304, and a lead screw 306 is provided on the inner side of the sliding base 304. The lead screw 306 is driven by a motor, and the two sets of sliding bases 304 move relative to each other under the action of the motor driving the lead screw 306 to rotate. The rigid connection ensures that the pressing cylinder 305 moves synchronously with the sliding base 304 and will not shift position during the pressing process, ensuring that the pressing force can be accurately applied to the steel grating. By utilizing the threaded engagement relationship between the lead screw 306 and the sliding base 304, the rotational motion of the motor is converted into linear motion, realizing the precise adjustment of the position of the sliding base 304, ensuring that the relative movement of the two sets of sliding bases 304 is synchronous and accurate, meeting the pressing requirements of steel gratings of different widths. At the same time, the motor provides stable power for the rotation of the lead screw 306, and the relative approach or distance of the sliding bases 304 is realized by controlling the forward and reverse rotation of the motor.

[0023] Furthermore, a connecting groove 307 is fixedly connected to the output end of the clamping cylinder 305. A clamping roller 308 is rotatably connected to the inner side of the connecting groove 307, and three sets of clamping rollers 308 are provided. The clamping cylinder 305 converts air pressure energy into a downward clamping force between the connecting groove 307 and the clamping rollers 308. By adjusting the air pressure, the clamping force can be precisely controlled, avoiding damage to the steel grating due to excessive clamping force or instability due to insufficient clamping force. The connecting groove 307 serves as the clamping cylinder 305... The intermediate connecting piece between 05 and the clamping roller 308 evenly transmits the driving force of the clamping cylinder 305 to the three sets of clamping rollers 308, ensuring that the clamping force of each clamping roller 308 on the steel grating is consistent. The clamping rollers 308 contact the steel grating in a rolling contact manner, which not only achieves reliable clamping, but also converts sliding friction into rolling friction, reducing wear on the surface of the steel grating. At the same time, it allows the steel grating to move along the length direction during the straightening process, providing the necessary conditions for subsequent straightening actions.

[0024] Furthermore, a connecting chamber 4 is fixedly connected to the rear side of the connecting base 301. A hydraulic cylinder 5 is installed at the upper end of the connecting chamber 4, and a hydraulic pipeline 6 is installed on the surface of the connecting chamber 4. A hydraulic drive device 7 is installed at the end of the hydraulic pipeline 6 away from the connecting chamber 4. The connecting chamber 4 serves as the mounting cavity for the hydraulic actuator and the straightening component. Its stable connection ensures that the internal components will not shift during the straightening process, thus guaranteeing the straightening accuracy. The hydraulic system of the hydraulic pipeline 6 relies on the pressure of the hydraulic oil to transmit power. The sealed connection of the hydraulic pipeline 6 can prevent hydraulic oil leakage and ensure that the pressure of the hydraulic oil can be effectively transmitted to the actuator, avoiding power loss or system failure due to leakage. The hydraulic drive device 7 converts the mechanical energy of the motor into the pressure energy of the hydraulic oil and delivers the high-pressure hydraulic oil to the actuator through the hydraulic pipeline 6. Utilizing the characteristics of high power, smooth transmission, and easy overload protection of hydraulic transmission, it provides stable and strong power for subsequent straightening actions.

[0025] Furthermore, a lifting straightening roller 8 is provided on the inner side of the connecting chamber 4. The two ends of the lifting straightening roller 8 are fixedly connected to the output ends of the hydraulic cylinder 5. A rotating straightening roller 9 is provided below the lifting straightening roller 8. A meshing gear 10 is installed on the left end of the rotating straightening roller 9. The meshing gear 10 drives the rotating straightening roller 9 to rotate through the motor-driven gear set. The hydraulic cylinder 5 uses the controllable pressure of hydraulic transmission to push the lifting straightening roller 8 downward to apply pressure. The pressure can be precisely adjusted according to the thickness and deformation degree of the steel grating to ensure that the straightening force can eliminate welding deformation without causing excessive squeezing damage to the steel grating. At the same time, through the meshing transmission of the meshing gear 10 and the motor-driven gear set, the rotational motion of the motor is transmitted to the rotating straightening roller 9. The rotating straightening roller 9 uses the friction with the steel grating to drive the steel grating to move, realizing the continuous conveying of the steel grating. This allows the entire length of the steel grating to pass through the straightening area between the lifting straightening roller 8 and the rotating straightening roller 9, completing the overall deformation straightening.

[0026] Working principle: In use, first, start the motor of the drive screw 306 to move the two sets of sliding bases 304 relative to each other along the sliding groove 302 of the connecting base 301 to adapt to the width of the steel grating. At the same time, start the telescopic cylinder 201 to push the clamping groove 202 to adjust to the appropriate clamping position. Then, according to the thickness and deformation of the steel grating, adjust the correction pressure parameter of the hydraulic drive device 7 and the clamping force parameter of the clamping cylinder 305 respectively. Next, load and position the steel grating. Place the steel grating on the guide roller 303 and start the drive motor of the guide roller 303. The steel grating is conveyed towards the connecting chamber 4 under the drive of the guide roller 303. During the process, the side of the steel grating contacts the auxiliary roller 203 of the clamping groove 202 to ensure that it does not deviate from the track. When the front end of the steel grating enters between the two sets of clamping components 3, start the clamping cylinder 305 to push the connecting groove 307 and the three sets of clamping rollers 308 downward, pressing the steel grating between the clamping rollers 308 and the guide roller 303. In the subsequent continuous straightening stage, the drive motor of the rotating straightening roller 9 is started. The motor drives the meshing gear 10 and the rotating straightening roller 9 to rotate through the gear set. The rotating straightening roller 9 moves the steel grating towards the straightening area between the lifting straightening roller 8 and the rotating straightening roller 9. At the same time, the hydraulic drive device 7 is started, and high-pressure hydraulic oil is delivered to the hydraulic cylinder 5 through the hydraulic pipeline 6, pushing the lifting straightening roller 8 downward to apply the preset straightening pressure. As the steel grating moves, the welding deformation along its entire length is squeezed out in sequence. After the rear end of the steel grating has completely passed through the straightening area, the hydraulic drive device 7, the drive motor of the rotating straightening roller 9, and the clamping cylinder 305 are turned off, so that the lifting straightening roller 8 and the clamping roller 308 are reset upward respectively. Finally, the guide roller 303 is kept running to convey the straightened steel grating out of the device to complete the unloading. The process can then be repeated to straighten the next steel grating. This completes the use of a steel grating welding deformation straightening device.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel grating welding deformation correction device, comprising a fixed base (1), characterized in that: A clamping assembly (2) is installed on the right side of the fixed base (1). The clamping assembly (2) includes a telescopic cylinder (201) installed on the right side of the fixed base (1). The output end of the telescopic cylinder (201) is fixedly connected to a clamping groove (202). An auxiliary roller (203) is rotatably connected to the inner side of the clamping groove (202). A pressing assembly (3) is provided on the rear side of the fixed base (1). The pressing assembly (3) includes a connecting base (301) provided on the rear side of the fixed base (1). A sliding groove (302) is provided on the upper end of the connecting base (301).

2. The steel grating welding deformation correction device according to claim 1, characterized in that, The fixed base (1) and the telescopic cylinder (201) are fixedly connected by bolts. There are two sets of telescopic cylinders (201). The telescopic cylinder (201) and the clamping groove (202) are welded together. There are four sets of auxiliary rollers (203) on the inner side of the clamping groove (202).

3. The steel grating welding deformation correction device according to claim 1, characterized in that, The slide groove (302) has two sets. The inner side of the connecting base (301) is equipped with a guide roller (303). The guide roller (303) is driven by a motor. The inner side of the slide groove (302) is slidably connected to a sliding base (304). The sliding base (304) has two sets.

4. The steel grating welding deformation correction device according to claim 3, characterized in that, A clamping cylinder (305) is fixedly connected to the upper end of the sliding base (304). A lead screw (306) is provided on the inner side of the sliding base (304). The lead screw (306) is driven by a motor, and the two sets of sliding bases (304) move relative to each other under the action of the motor driving the lead screw (306) to rotate.

5. The steel grating welding deformation correction device according to claim 4, characterized in that, The output end of the clamping cylinder (305) is fixedly connected to a connecting groove (307), and a clamping roller (308) is rotatably connected to the inner side of the connecting groove (307), and a total of three sets of clamping rollers (308) are provided.

6. The steel grating welding deformation correction device according to claim 1, characterized in that, A connecting chamber (4) is fixedly connected to the rear side of the connecting base (301). A hydraulic cylinder (5) is installed at the upper end of the connecting chamber (4). A hydraulic pipeline (6) is installed on the surface of the connecting chamber (4). A hydraulic drive device (7) is installed at the end of the hydraulic pipeline (6) away from the connecting chamber (4).

7. The steel grating welding deformation correction device according to claim 6, characterized in that, The inner side of the connecting chamber (4) is provided with a lifting straightening roller (8). The two ends of the lifting straightening roller (8) are fixedly connected to the output end of the hydraulic cylinder (5). A rotating straightening roller (9) is provided below the lifting straightening roller (8). A meshing gear (10) is installed on the left end of the rotating straightening roller (9). The meshing gear (10) drives the rotating straightening roller (9) to rotate through the motor-driven gear set.

Images