Welding reversible deformation device

Abstract

The utility model provides a welding reversible deformation device, and relates to the technical field of welding reversible deformation, and the welding reversible deformation device comprises a reversible deformation jig frame, a controller, and a plurality of clamping devices arranged on the reversible deformation jig frame and used for clamping and fixing the two ends of a workpiece to be welded; the multiple jacking devices are used for carrying out multi-point jacking on the workpieces to be welded; the displacement sensors are located at the positions, close to the jacking devices, of the anti-deformation jig frame, correspond to the jacking devices one to one and are used for monitoring displacement changes of the jacking devices corresponding to fulcrums of workpieces to be welded; and the controller is electrically connected with the clamping device, the jacking device and the displacement sensor. The anti-deformation welding device has the effect of improving the anti-deformation welding efficiency.

Description

Technical Field

[0001] This application relates to the technical field of welding anti-deformation, and particularly to a welding anti-deformation device. Background Art

[0002] With the continuous development of social economy and the continuous advancement of urbanization, the urban traffic pressure is also increasing day by day. At the same time, in order to integrate with the overall urban planning and construction, modern bridges often adopt the form of steel box girders for design and production. In the production process of steel box girder bridges, it mainly includes the welding of the top and bottom plates, the welding of vertical and horizontal diaphragms, and the welding of connection boxes. Especially during the welding of the top and bottom plates, quality problems such as the shrinkage deformation of the plate body towards the welding direction often occur. If the welding deformation is not corrected, it will not only affect the overall installation quality and construction period of the bridge structure, but also reduce the safety and reliability of the bridge project.

[0003] In related technologies, usually a deformation is artificially made on the weldment in advance, so that this deformation is opposite in direction and equal in value to the deformation that occurs after welding. This method is called the anti-deformation method, that is, the size and direction of the structural deformation are estimated in advance. After manually measuring the elevation, the steel plate is cut according to the size and then fixed on the jig to give a deformation in the opposite direction to offset the welding deformation.

[0004] In view of the above related technologies, due to the large errors generated by manual measurement and cutting, a large amount of flame correction work is still required after the plate unit parts are placed on the jig, resulting in low efficiency of anti-deformation welding. Summary of the Utility Model

[0005] In order to improve the problem of low efficiency of anti-deformation welding, this application provides a welding anti-deformation device.

[0006] The welding anti-deformation device provided by this application adopts the following technical solutions:

[0007] A welding anti-deformation device includes:

[0008] An anti-deformation jig, a controller, and disposed on the anti-deformation jig are:

[0009] A plurality of clamping devices, which are used for clamping and fixing both ends of the workpiece to be welded;

[0010] A plurality of jacking devices, which are used for multi-point jacking of the workpiece to be welded; and

[0011] Displacement sensors, located at the position of the anti-deformation jig close to the jacking devices, with a plurality of them corresponding to the plurality of jacking devices one by one, and are used for monitoring the displacement changes of the jacking devices corresponding to the fulcrums of the workpiece to be welded;

[0012] The controller is electrically connected to the clamping devices, the jacking devices, and the displacement sensors.

[0013] Furthermore, the anti-deformation jig includes two jig longitudinal beams and a plurality of jig cross beams disposed between the two jig longitudinal beams. The plurality of jig cross beams are spaced along the length direction of the jig longitudinal beams. The clamping device is disposed on the jig longitudinal beams, and the jacking device is disposed on the jig cross beams.

[0014] Furthermore, the plurality of clamping devices are respectively disposed on the two jig longitudinal beams, and the clamping devices located on the same jig longitudinal beam are equally spaced along the length direction of the jig longitudinal beam.

[0015] Furthermore, the plurality of jacking devices are respectively disposed on the plurality of jig cross beams, and the plurality of jacking devices located on the same jig cross beam are spaced along the length direction of the jig cross beam.

[0016] Furthermore, the jig cross beam is provided with a plurality of receiving grooves, and the jacking device is located in the receiving groove.

[0017] Furthermore, the displacement sensor is disposed on one side of the jig cross beam and has the same longitudinal coordinate as the corresponding jacking device.

[0018] Furthermore, a pressure sensor for monitoring the pressure between the jacking device and the workpiece to be welded is provided at the movable end of the jacking device, and the pressure sensor is electrically connected to the controller.

[0019] Furthermore, the clamping device includes a clamping bracket, an upper chuck, a lower chuck, a rubber pad, and a clamping drive. The clamping bracket is fixedly connected to the jig longitudinal beam. The upper chuck and the lower chuck are both disposed on the clamping bracket, and the upper chuck is located directly above the lower chuck. Two rubber pads are provided and are respectively disposed on the sides of the upper chuck and the lower chuck close to each other. The clamping drive is used to drive the upper chuck to move closer to or away from the lower chuck.

[0020] Furthermore, a limiting boss for limiting the end of the workpiece to be welded is provided on the lower chuck, and the limiting boss is located on the side of the lower chuck away from the workpiece to be welded.

[0021] Furthermore, the lower chuck is slidably connected to the clamping bracket in the transverse direction, the upper chuck is slidably connected to the clamping drive in the transverse direction, and sliding drives for driving the lower chuck and the upper chuck to slide are provided on both the clamping bracket and the clamping drive.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting a clamping device, a jacking device, a displacement sensor and a controller, before welding a workpiece to be welded, according to the characteristics of welding deformation, the welding deformation curve is calculated in advance, and the anti-deformation surface is calculated, so as to determine the height that the jacking device needs to reach. When performing the anti-deformation operation on the workpiece to be welded, the two ends of the workpiece to be welded are clamped and fixed by the clamping device, and then the workpiece to be welded is jacked at multiple points by the jacking device. The controller judges and controls the jacking amount of the jacking device through the displacement sensor, so as to reduce the anti-deformation error, thereby reducing the workload of subsequent correction and improving the efficiency of anti-deformation welding;

[0024] 2. By setting a pressure sensor, the controller can accurately monitor the operating state of each jacking device. When the pressure sensor is significantly higher or lower than the theoretical value, the controller stops the jacking device in time, which is convenient for the staff to check for abnormalities and stop losses in time.

[0025] 3. By horizontally sliding and setting the upper chuck and the lower chuck, after the upper chuck and the lower chuck fix the workpiece to be welded, by sliding the upper chuck and the lower chuck, the positions of both ends of the workpiece to be welded can be controlled, so that the workpiece to be welded fits the theoretical surface better, thereby further reducing the workload of subsequent correction. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0028] Figure 2 is the schematic diagram of hiding the welded workpiece in the embodiment of the present application.

[0029] Figure 3 is Figure 1 the schematic diagram of another perspective.

[0030] Figure 4 is the structural schematic diagram of the clamping device in the embodiment of the present application.

[0031] Reference numerals: 1, anti-deformation jig; 11, jig longitudinal beam; 12, jig cross beam; 2, clamping device; 21, clamping bracket; 211, base; 212, support rod; 213, top plate; 22, upper chuck; 23, lower chuck; 24, clamping drive; 25, limit boss; 26, rubber pad; 27, connecting seat; 3, jacking device; 4, displacement sensor; 5, workpiece to be welded. Detailed implementation manners

[0032] For the purpose of making the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] An embodiment of the present application discloses a welding anti-deformation device. Please refer to Figure 1 , in this embodiment, the workpiece 5 to be welded is a steel plate. The welding anti-deformation device includes an anti-deformation jig 1, a clamping device 2, a jacking device 3 and a displacement sensor 4. The clamping device 2, the jacking device 3 and the displacement sensor 4 are all arranged on the anti-deformation jig 1. There are multiple clamping devices 2 and multiple jacking devices 3. The multiple clamping devices 2 clamp and fix both ends of the workpiece 5 to be welded. The jacking device 3 is a hydraulic cylinder. As an alternative embodiment, the jacking device 3 can also be an electric push rod. The multiple jacking devices 3 perform multi-point jacking on the workpiece 5 to be welded. The displacement sensor 4 is arranged at the anti-deformation jig 1 near the jacking device 3. There are multiple displacement sensors 4, and they are in one-to-one correspondence with the multiple jacking devices 3. The controller is electrically connected to the clamping device 2, the jacking device 3 and the displacement sensor 4.

[0034] Before welding the workpiece 5 to be welded, according to the transverse deformation characteristics of the workpiece 5 to be welded, the welding transverse deformation curve is calculated in advance, and at the same time, the anti-deformation transverse control curve of the workpiece 5 to be welded is obtained. Then, according to the longitudinal deformation characteristics of the workpiece 5 to be welded, its welding longitudinal deformation curve is calculated in advance, and the anti-deformation longitudinal control curve of the workpiece 5 to be welded is obtained. According to the obtained anti-deformation transverse control curve and anti-deformation longitudinal control curve, the anti-deformation control surface of the workpiece 5 to be welded is calculated, and the anti-deformation surface is drawn into a curve graph and input into the computer. The computer calculates the relative elevation of each fulcrum corresponding to the jacking device 3 in real time. When performing the anti-deformation operation on the workpiece 5 to be welded, the workpiece 5 to be welded is placed on the anti-deformation jig 1. The controller controls the clamping device 2 to clamp and fix both ends of the workpiece 5 to be welded, and according to the relative elevation of each fulcrum calculated by the computer, in cooperation with the displacement sensor 4, controls the jacking device 3 to perform point-to-point jacking on the workpiece 5 to be welded, so that the workpiece 5 to be welded coincides with the anti-deformation surface in height, and only a small amount of flame correction is required, thereby greatly improving the efficiency of welding anti-deformation.

[0035] Specifically, please refer to Figure 2 and Figure 3, the anti-deformation jig 1 includes two parallel jig longitudinal beams 11 and multiple jig cross beams 12 arranged between the two jig longitudinal beams 11. In this embodiment, there are seven jig cross beams 12, and the multiple jig cross beams 12 are arranged at equal intervals along the length direction of the jig longitudinal beams 11. Both the jig longitudinal beams 11 and the jig cross beams 12 are square steel, and both ends of the jig cross beams 12 are welded and fixed to the inner sides of the two jig longitudinal beams 11. The clamping device 2 is arranged on the jig longitudinal beams 11, and the jacking device 3 is arranged on the jig cross beams 12.

[0036] In order to fix the workpiece to be welded 5, multiple clamping devices 2 are respectively arranged on the two jig longitudinal beams 11. The multiple clamping devices 2 on the same jig longitudinal beam 11 are arranged at equal intervals and are collinear with the jig cross beam 12, that is, one clamping device 2 is provided at both ends of the jig cross beam 12. In order to make the anti-deformation force of the workpiece to be welded 5 uniform, multiple jacking devices 3 are arranged in multiple groups on the multiple jig cross beams 12 arranged at equal intervals. The multiple jacking devices 3 on the same jig cross beam 12 are arranged at equal intervals along the length direction of the jig cross beam 12. In this embodiment, three jacking devices 3 are provided on the same jig cross beam 12.

[0037] Since the bending degrees of different workpieces to be welded 5 are different, in order to reduce the protrusion of the jacking device 3 from the jig cross beam 12 too much and affect the placement of the workpiece to be welded 5, multiple receiving grooves are provided on the jig cross beam 12. The number of receiving grooves is the same as the number of jacking devices 3 on the same jig cross beam 12. Most of the cylinder parts of the jacking devices 3 are located inside the receiving grooves, and the piston ends of the jacking devices 3 extend out of the receiving grooves, so that the device can adapt to workpieces to be welded 5 with a large range of curvatures.

[0038] The displacement sensor 4 is used to monitor the displacement change range of the fulcrum of the jacking device 3 corresponding to the workpiece to be welded 5 and needs to be set near the jacking device 3. The displacement sensor 4 is an infrared sensor. The displacement sensor 4 is fixedly installed on one side of the jig cross beam 12 by bolts and is aligned with the longitudinal coordinates of the corresponding jacking device 3. The infrared emitter of the displacement sensor 4 is set vertically upward, and the emitted infrared rays are reflected by the workpiece to be welded 5 to the infrared receiver, and then the displacement change of the fulcrum can be judged.

[0039] In order to improve the safety of the device, a pressure sensor is provided at the top of the movable end of each jacking device 3. When the movable end of the jacking device 3 jacks up the workpiece to be welded 5, the value of the pressure sensor changes. The controller monitors the value of each pressure sensor in real time. When the value of the pressure sensor is much larger or much smaller than the theoretical value, the controller immediately stops all jacking devices 3, so as to facilitate the staff to check the abnormality, reduce the possibility of damage to the anti-deformation device or the workpiece to be welded 5, and stop the loss in time.

[0040] The following is a detailed description of the clamping device 2. Please refer toFigure 4 , the clamping device 2 includes a clamping bracket 21, an upper chuck 22, a lower chuck 23, a rubber pad 26, and a clamping drive 24. The clamping bracket 21 includes a base 211, a top plate 213, and a support rod 212. The support rod 212 is disposed between the base 211 and the top plate 213. The base 211, the top plate 213, and the support rod 212 are integrally C-shaped, and the support rod 212 is located on the side of the base 211 away from the jig beam 12. The clamping drive 24 is a hydraulic cylinder. As an alternative embodiment, the clamping drive 24 can also be an electric push rod. The cylinder body of the clamping drive 24 is fixedly connected to the side of the top plate 213 close to the bottom plate by bolts. Both the upper chuck 22 and the lower chuck 23 are rectangular plate-shaped. The upper chuck 22 is connected to the movable end of the clamping drive 24. The lower chuck 23 is disposed on the side of the base 211 close to the top plate 213. There are two rubber pads 26, and the two rubber pads 26 are respectively located on the sides of the upper chuck 22 and the lower chuck 23 close to each other.

[0041] To facilitate the replacement of the rubber pad 26, the rubber pad 26 is provided with ridges, and grooves are formed on both the upper chuck 22 and the lower chuck 23. Through the fitting of the ridges and the grooves, the fixing of the rubber pad 26 is realized, so as to facilitate the disassembly and installation of the rubber pad 26. As an alternative embodiment, the rubber pad 26 can also be fixed to the upper chuck 22 or the lower chuck 23 by an adhesive method.

[0042] In order to quickly position the workpiece to be welded 5 before clamping the workpiece to be welded 5, a limit boss 25 is provided on the lower chuck 23. The limit boss 25 is located on the side of the lower chuck 23 away from the workpiece to be welded 5, and the top surface of the limit boss 25 is higher than the top surface of the lower chuck 23. Before performing the anti-deformation operation on the workpiece to be welded 5, the two ends of the workpiece to be welded 5 are respectively abutted against the bosses on the lower chucks 23 on the two jig longitudinal beams 11, so as to realize the quick positioning of the workpiece to be welded 5.

[0043] In order to make the workpiece 5 to be welded more conform to the theoretical anti-deformation surface after anti-deformation, the lower chuck 23 is slidably connected to the base 211 in the transverse direction. A connecting seat 27 is arranged between the clamping drive 24 and the upper chuck 22. The connecting seat 27 is fixedly connected to the movable end of the clamping drive 24 by bolts. The upper chuck 22 is slidably connected to the clamping drive 24 in the transverse direction. Sliding drives are provided on both the base 211 and the connecting seat 27 for driving the upper chuck 22 or the lower chuck 23 to slide. Specifically, both the base 211 and the connecting seat 27 are hollow. The sliding drive is a linear motor. Sliders are provided on both the upper chuck 22 and the lower chuck 23. Sliding grooves adapted to the sliders are formed on both the base 211 and the connecting seat 27. The upper chuck 22 and the lower chuck 23 are slid by the cooperation of the sliders and the sliding grooves. The movable end of the sliding drive is fixedly connected to the slider. The sliding drive drives the slider to slide, thereby driving the upper chuck 22 or the lower chuck 23 to slide, so that the distance between the two ends of the workpiece 5 to be welded can be changed after being clamped and fixed, making the shape of the workpiece 5 to be welded closer to the theoretical anti-deformation surface, thereby further reducing the workload of later correction and further improving the efficiency of anti-deformation welding.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding anti-deformation device, characterized in that, Including: An anti-deformation jig, a controller, and the following provided on the anti-deformation jig: A plurality of clamping devices for clamping and fixing both ends of the workpiece to be welded; A plurality of jacking devices for multi-point jacking of the workpiece to be welded; And Displacement sensors, located at the position of the anti-deformation jig close to the jacking devices, with a plurality of them corresponding one by one to the plurality of jacking devices, for monitoring the displacement changes of the jacking devices corresponding to the fulcrums of the workpiece to be welded; The controller is electrically connected to the clamping devices, the jacking devices, and the displacement sensors.

2. The welding anti-deformation device according to claim 1, characterized in that, The anti-deformation jig includes two jig longitudinal beams and a plurality of jig cross beams provided between the two jig longitudinal beams. The plurality of jig cross beams are arranged at intervals along the length direction of the jig longitudinal beams. The clamping devices are provided on the jig longitudinal beams, and the jacking devices are provided on the jig cross beams.

3. A welding anti-deformation device according to claim 2, characterized in that, The plurality of clamping devices are respectively provided on the two jig longitudinal beams, and the clamping devices located on the same jig longitudinal beam are arranged at equal intervals along the length direction of the jig longitudinal beam.

4. A welding anti-deformation device according to claim 2, characterized in that, The plurality of jacking devices are respectively provided on the plurality of jig cross beams, and the plurality of jacking devices located on the same jig cross beam are arranged at intervals along the length direction of the jig cross beam.

5. A welding anti-deformation device according to claim 4, characterized in that, The jig cross beam is provided with a plurality of receiving grooves, and the jacking devices are located in the receiving grooves.

6. The welding anti-deformation device according to claim 5, wherein, The displacement sensor is provided on one side of the jig cross beam and has the same longitudinal coordinate as the corresponding jacking device.

7. The welding anti-deformation device according to claim 6, characterized in that, The movable end of the jacking device is provided with a pressure sensor for monitoring the pressure between the jacking device and the workpiece to be welded, and the pressure sensor is electrically connected to the controller.

8. A welding anti-deformation device according to any one of claims 1-7, characterized in that, The clamping device includes a clamping bracket, an upper chuck, a lower chuck, rubber pads, and a clamping drive. The clamping bracket is fixedly connected to the jig longitudinal beam. The upper chuck and the lower chuck are both provided on the clamping bracket, and the upper chuck is located directly above the lower chuck. There are two rubber pads respectively provided on the sides of the upper chuck and the lower chuck close to each other. The clamping drive is used to drive the upper chuck to move closer to or away from the lower chuck.

9. The welding anti-deformation device according to claim 8, characterized in that, The lower chuck is provided with a limiting boss for limiting the end of the workpiece to be welded, and the limiting boss is located on the side of the lower chuck away from the workpiece to be welded.

10. A welding anti-deformation device according to claim 9, characterized in that, The lower chuck is slidably connected to the clamping bracket in the transverse direction, the upper chuck is slidably connected to the clamping drive in the transverse direction, and the clamping bracket and the clamping drive are both provided with a sliding drive for driving the lower chuck and the upper chuck to slide.

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