A web plate welding apparatus for large steel beams

Abstract

The application discloses a rib plate welding equipment for large steel beams, which comprises supporting legs, guide rails, moving trolleys, conveying roller beds, plate taking robots and spot welding robots, the steel beams are vertically arranged on the conveying roller beds, a plurality of supporting legs are symmetrically arranged on the two sides of the conveying roller beds, the top of the supporting legs on the same side of the conveying roller bed is fixedly provided with a guide rail, the guide rail is parallel to the conveying direction of the steel beam, and the two ends of the moving trolley are respectively assembled in the guide rails on the two sides of the conveying roller bed; the bottom of the moving trolley is connected with a vertical rod, the lower end of the vertical rod is provided with a magnetic suction head, the magnetic suction head is used for tightly sucking the top of the steel beam, the two sides of the conveying roller bed are symmetrically provided with the plate taking robots and the spot welding robots, and the spot welding robots are used for welding rib plates for the steel beams. The rib plate welding equipment adopts a flow line automatic process and cooperates with robot operation, can realize double-side symmetrical welding of the section steel, reduces bending deformation, improves welding efficiency, guarantees welding quality, has good welding seam consistency, reduces manual errors and saves manpower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel beam welding, in particular to a rib plate welding equipment for large steel beams. BACKGROUND

[0002] A large number of steel sections are used in engineering as steel structures, such as H-shaped steel, which often has a length of more than ten meters or even twenty meters and a cross-section height of one to two meters. The web plates of the H-shaped steel beams need to be welded with several rib plates on both sides, but automatic welding has certain difficulties. If manual welding is used to weld the rib plates on the steel sections, it is easy to be low in efficiency, prone to manual errors, and different skills of welders result in inconsistent welding effects, which are difficult to inspect according to standards. Therefore, for the case of large engineering quantity and large batch of steel sections, the rib plate welding process is suitable for adopting a flow line automatic operation.

[0003] The existing rib plate automatic welding technology mainly adopts a welding platform, that is, the steel section is hung on the working platform with one face upward, a robot completes the assembly and spot welding of the rib plates on the web plate, and then full welding is performed. Then the steel section is hoisted and reversed, the other face is upward, and the welding of the other web plate face is completed. This single-face welding process often leads to bending deformation of the steel section. Once the deformation occurs, it is difficult to straighten the large steel structure. The reversing and positioning in the welding process are low in efficiency. SUMMARY

[0004] The purpose of the present application is to provide a rib plate welding equipment for large steel beams to solve the problems existing in the prior art. The flow line automatic process is adopted in cooperation with the robot operation to realize the double-face symmetrical welding of the steel section, reduce the bending deformation, improve the welding efficiency, ensure the welding quality, and improve the consistency of the welding seam. The manual error is reduced, and the manpower is saved.

[0005] To achieve the above purpose, the present application provides the following scheme: the present application provides a rib plate welding equipment for large steel beams, which comprises support legs, guide rails, a moving trolley, a transmission roller way and a welding robot. The steel beam is vertically placed on the transmission roller way. A plurality of support legs are symmetrically arranged on both sides of the transmission roller way. The top of the support legs on the same side of the transmission roller way is fixedly provided with the guide rails. The guide rails are parallel to the transmission direction of the steel beam, and the two ends of the moving trolley are respectively assembled in the guide rails on both sides of the transmission roller way. The bottom of the moving trolley is connected with a vertical rod. The lower end of the vertical rod is provided with a magnetic suction head. The magnetic suction head is used to tightly suck the top of the steel beam. The welding robots are symmetrically arranged on both sides of the transmission roller way. The welding robots are used to weld the rib plates for the steel beam.

[0006] Preferably, both ends of the conveying roller table are supported on the ground or workbench through bearing seats, and each roller of the conveying roller table is connected in series through a chain; the output shaft of the motor is drivingly connected with a speed reducer, and the output shaft of the speed reducer is drivingly connected with a driving wheel of the chain.

[0007] Preferably, both ends of the moving trolley are matched with the guide rails through rollers or sliding blocks.

[0008] Preferably, the moving trolley is rigidly connected with the vertical rod.

[0009] Preferably, the vertical rod is an electric lifting rod.

[0010] Preferably, the magnetic suction head is magnetized and demagnetized in an electromagnetic mode, and the magnetized magnetic suction head is used to suck the top surface of the lower steel beam.

[0011] Preferably, the welding robot comprises a plate taking robot and a spot welding robot, the plate taking robot is used to align the rib plate to the welding position of the steel beam, and the spot welding robot is used to weld the rib plate to the steel beam.

[0012] Preferably, a rib plate vehicle is further comprised, the rib plate cut by the blanking and cutting device is placed on the rib plate vehicle, the welding surface of the rib plate is kept vertical with a certain distance, and the rib plate is convenient for the plate taking robot to grab. The rib plate vehicle is arranged on one side of the welding robot.

[0013] The present application has the following beneficial technical effects relative to the prior art:

[0014] The rib plate welding device for large steel beams of the present application is used to complete the automatic welding of profile steel, especially H-shaped steel structure, without reversing process, saving time and improving welding work efficiency; the rib plate is symmetrically welded on both sides at the same time, which can avoid the thermal bending deformation of single-side welding and improve the welding quality; the welding seam of the robot automatic welding is good in consistency, saving labor and reducing manual error. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Figure 1 It is a front view of the rib plate welding device;

[0017] Figure 2 It is a top view of the rib plate welding device;

[0018] Figure 3 is a side view of the ribbed plate welding equipment;

[0019] Figure 4 is a schematic view of the ribbed plate vehicle;

[0020] Wherein, 1 support leg, 2 guide rail, 3 steel beam, 4 vertical rod, 5 moving trolley, 6 conveying roller, 7 spot welding robot, 8 welding robot, 9 frame connecting piece, 10 ribbed plate vehicle, 11 blanking cutting equipment, 12 plate taking robot, 13 ribbed plate, 14 vertical rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] The purpose of the present application is to provide a ribbed plate welding equipment for large steel beams to solve the problems existing in the prior art. The ribbed plate welding equipment adopts a pipeline automation process and cooperates with a robot operation to realize double-sided symmetrical welding of the profile steel, reduce bending deformation, improve welding efficiency, ensure welding quality and good welding consistency, reduce manual errors and save manpower.

[0023] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0024] As shown in Figures 1-4 The present embodiment provides a ribbed plate welding equipment for large steel beams, which comprises support legs 1, guide rails 2, a moving trolley 5, a conveying roller 6 and welding robots 8. The steel beam 3 is vertically placed on the conveying roller 6. A plurality of support legs 1 are symmetrically arranged on both sides of the conveying roller 6. The top of the support legs 1 located on the same side of the conveying roller 6 is fixedly provided with a guide rail 2. The guide rail 2 is parallel to the conveying direction of the steel beam 3, and the two ends of the moving trolley 5 are respectively assembled in the guide rails 2 on both sides of the conveying roller 6. The bottom of the moving trolley 5 is connected with a vertical rod 4. The lower end of the vertical rod 4 is provided with a magnetic suction head for tightly sucking the top of the steel beam 3. The welding robots 8 are symmetrically arranged on both sides of the conveying roller 6, and are used for welding ribbed plates for the steel beam 3.

[0025] Specifically, the rib plate welding equipment for large steel beams adopts pipeline automation and robot cooperation, a rigid frame structure is designed above the pipeline, a plurality of moving trolleys 5 are arranged on the two rails 2, the moving trolleys 5 are arranged above the frame, vertical rods 4 are arranged below the moving trolleys 5, the magnetic suction head at the lower end of the vertical rod 4 can suck the top surface of the steel beam 3, so that the steel beam 3 can be kept from falling during the stopping and conveying processes; after the steel beam 3 reaches a certain position, a group of magnetic suction heads at the rear are turned off, the vertical rod 4 is lifted, the trolley returns to the reset position under the traction, and the next group of vertical rods 4 at the front can be connected to the steel beam 3; the conveying roller 6 below can convey the steel beam 3 to different workstations, after conveying to the spot welding workstation, the plate taking robot 12 takes the rib plate from the rib plate vehicle 10, aligns to the steel beam 3, and the other spot welding robot 7 spot welds the rib plate; the two sides of the steel beam 3 are operated simultaneously and symmetrically; when the steel beam 3 reaches the next full welding workstation, a plurality of robots perform full welding operation. The pipeline can improve the welding work efficiency, the vertically placed steel beam 3 can avoid thermal bending deformation and improve the welding quality during the symmetrical welding of the rib plates on both sides; the welding seam consistency of the robot automatic welding is good, manpower is saved, and manual error is reduced.

[0026] Further, the frame has a plurality of support legs 1, a frame connecting piece 9, two parallel rails 2 fixed on the beams of the frame, and a plurality of moving trolleys 5 capable of reciprocating on the rails.

[0027] In the embodiment, in order to adapt to steel beams of different heights, the vertical rod 4 adopts an electric lifting rod, which can adjust the height of the vertical rod 4 by clamping the height of the steel beam 3, so that the magnetic suction head at the bottom end of the vertical rod 4 can suck the top surface of the steel beam 3. The magnetic suction head at the lower end of the vertical rod 4 adopts electromagnetic magnetization and demagnetization; after magnetization, it can suck the top surface of the steel beam 3 below; after demagnetization, the magnetic suction head is disconnected from the steel beam 3.

[0028] In the embodiment, a group of rotatable conveying roller 6 is arranged below the steel beam 3, the conveying roller 6 has bearing seats at both ends for support, the roller adopts chain connection, is driven to rotate by a motor + speed reducer, and can convey the steel beam 3 to different workstations for processing.

[0029] The cutting equipment 11 cuts the rib plate parts, which are vertically placed on the rib plate vehicle 10 according to the number code, and the rib plates are kept apart to facilitate dust removal and iron removal and facilitate the grabbing of the mechanical hand. The rib plate vehicle 10 has anti-rollover support; at the welding workstation, the robots on both sides of the steel beam 3 simultaneously and symmetrically weld, thermal deformation is offset, efficiency and quality are improved.

[0030] The above movements, magnetic suction and signal feedback are all controlled by PLC.

[0031] The working principle of the rib plate welding equipment for large steel beams in the application is as follows:

[0032] The steel beam 3 drives the upper moving trolley 5 and the vertical rod 4 to move synchronously during the transmission process, the trolley is driven by the steel beam 3, and after reaching a certain position, the magnetic attraction under the trolley is cancelled, and the vertical rod 4 is lifted, the moving trolley 5 returns to the reset position, the next group of trolleys and vertical rods 4 in front will be attracted to the steel beam 3, so that the steel beam 3 has enough magnetic attraction force and does not fall; the vertical rod 4 can automatically lift the height under the action of the motor, and can clamp and fix the steel beam 3 of different heights; after the steel beam 3 is transported to the position, the rib plate car 10 on each side is supplied by the cutting equipment 11; the plate taking robot 12 takes out the corresponding rib plate from the rib plate car 10, and fixes it on the appropriate position of the steel beam 3, and the other spot welding robot 7 performs spot welding; the other side of the steel beam 3 performs the same operation; after completion, the steel beam 3 runs to the next full welding station, and multiple spot welding robots 7 simultaneously weld at the symmetrical positions on both sides of the steel beam 3 to prevent deformation.

[0033] The pipeline can improve the welding work efficiency, and symmetrical welding of the rib plate on both sides of the steel beam 3 can avoid thermal bending deformation and improve the welding quality; the welding seam of the robot welding is good in consistency, manpower is saved, and manual error is reduced.

[0034] It should be noted that for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be regarded as limiting the claims.

[0035] The specific examples are applied in the present application to describe the principles and implementation modes of the present application, and the above embodiment description is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A welding equipment for stiffening plates of large steel beams, characterized in that: The system includes support legs, guide rails, a mobile trolley, a conveyor roller conveyor, and a welding robot. A steel beam stands upright on the conveyor roller conveyor. Several support legs are symmetrically arranged on both sides of the conveyor roller conveyor. A guide rail is fixed to the top of each support leg on the same side of the conveyor roller conveyor. The guide rail is parallel to the conveying direction of the steel beam, and both ends of the mobile trolley are respectively mounted within the guide rails on both sides of the conveyor roller conveyor. A vertical pole is connected to the bottom of the mobile trolley; the vertical pole is an electrically operated lifting pole. A magnetic suction head is provided at the lower end of the vertical pole, used to hold the top of the steel beam in place. The welding robot is symmetrically arranged on both sides of the conveyor roller conveyor and is used to weld stiffening plates onto the steel beam. There are multiple mobile trolleys, and the multiple mobile trolleys are arranged sequentially along the length of the guide rail. During the transmission process, the steel beam drives the mobile trolleys and the uprights to move synchronously.

2. The stiffener welding equipment for large steel beams according to claim 1, characterized in that: The two ends of the conveyor roller conveyor are supported on the ground or workbench by bearing seats, and the rollers of the conveyor roller conveyor are connected in series by chains; the output shaft of the motor is driven by a reducer, and the output shaft of the reducer is driven by the drive wheel of the chain.

3. The stiffener welding equipment for large steel beams according to claim 1, characterized in that: The two ends of the mobile trolley are attached to the guide rail by rollers or sliders.

4. The stiffener welding equipment for large steel beams according to claim 1, characterized in that: The mobile trolley is rigidly connected to the upright.

5. The stiffener welding equipment for large steel beams according to claim 1, characterized in that: The magnetic suction head is magnetized and demagnetized electromagnetically. After being magnetized, the magnetic suction head is used to hold the top surface of the steel beam below.

6. The stiffener welding equipment for large steel beams according to claim 1, characterized in that: The welding robot includes a plate-removing robot and a spot-welding robot. The plate-removing robot is used to align the stiffening plate to the welding position of the steel beam, and the spot-welding robot is used to weld the stiffening plate to the steel beam.

7. The stiffener welding equipment for large steel beams according to claim 6, characterized in that: It also includes a rib plate cart, on which the rib plates cut by the material cutting equipment are placed, and the rib plate cart is set on one side of the plate picking robot.

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