Whole welding work station for trolley frame of overhead and portal crane and welding method of whole welding work station

Abstract

The invention relates to the technical field of hoisting welding, in particular to an integral welding workstation for a trolley frame of a portal crane and a welding method of the integral welding workstation. Comprising a base, and a clamping component and a pair of welding components are arranged on the base; the welding parts are symmetrically arranged on the two sides of the clamping part; the clamping component is used for fixing a workpiece and adjusting the angle of the workpiece in the welding process; the welding part is used for welding the workpiece clamped by the clamping part; the flexible posture change of the workpiece and the optimization of the welding process during the overall welding operation of the trolley frame are realized, the welding quality of the workpiece is ensured, the overall operation efficiency and rhythm of products are improved, the labor intensity of workers is reduced, the workshop operation environment is optimized, and the stability of the welding state is obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting welding, in particular to an integral welding workstation for a trolley frame of a gantry crane and a welding method thereof. Background Art

[0002] At present, in the manufacturing process of the crane trolley frame on the market, based on the customization and diversified structure of the trolley frame, manual assembly and welding operations are mostly adopted: the end beam, connecting beam and pulley beam are used as the basic frame body, and the wheel intersection line is used as the positioning reference to assemble and weld the overall structure of the trolley frame. When welding, the welding workers need to enter the trolley frame structure or climb onto the surface of the trolley frame to perform welding operations. During the operation, the trolley frame needs to be frequently lifted and turned over, and the trolley frame is placed on its side. The trolley frame is spot-welded to the ground steel plate with process diagonal braces, and the process braces are cut off with a flame after welding, and the welds are eliminated with a grinder. Moreover, most of the assembly welds need to be welded vertically, the working environment is poor, the welding process is difficult, and the overall work rhythm of the workpiece is affected to a certain extent. In order to improve the working efficiency, ensure the accuracy of technical parameters, and facilitate the trolley welding operation, a whole-piece welding workstation for the trolley frame of a gantry crane is designed according to the trolley frame structure and process characteristics. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a gantry crane trolley frame integral welding workstation and welding method thereof, which effectively solves the problems in the background technology, realizes the flexible posture change of the workpiece and the optimization of the welding process during the integral welding operation of the trolley frame, ensures the welding quality of the workpiece, improves the overall operating efficiency and rhythm of the product, reduces manual labor intensity, optimizes the workshop working environment, and significantly improves the stability of the welding state.

[0004] To achieve the above-mentioned object, the present invention proposes the following technical solution: a gantry crane trolley frame integral welding workstation for integrally welding the trolley frame, comprising a base, a clamping component and a pair of welding components provided on the base; the welding components are symmetrically arranged on both sides of the clamping component; The clamping component is used to fix the workpiece and adjust the angle of the workpiece during the welding process; The welding component is used to weld the workpiece clamped by the clamping component.

[0005] Furthermore: the clamping component includes a support frame fixed on the base, both ends of the support frame are fixedly connected with a fixed displacement support seat, and the fixed displacement support seat is rotatably connected with a rotary gear disk, and the rotary gear disks on the fixed displacement support seat correspond to each other; a rotary platform is provided between the rotary gear disks, and both ends of the rotary platform are respectively fixed with the rotary gear disks; a plurality of movable support arms are slidably connected to the rotary platform, and the movable support arms are arranged in an array on the rotary platform, and a pair of bidirectional centering support columns are slidably connected to the movable support arms, and a high-precision T-type screw rod and a high-torque self-locking motor that match the bidirectional centering support columns are provided in the movable support arms; a high-load linear rail and high-precision helical teeth that match the movable support arms are provided on the rotary platform, and a transmission gear that matches the high-precision helical teeth is provided on the movable support arm; a high-load slider that matches the high-load linear rail is provided on the movable support arm; a servo motor that matches the transmission gear is fixed to the movable support arm.

[0006] Furthermore: the welding component includes a welding movable seat that is slidably connected to the base, the base is provided with a ground track that cooperates with the welding movable seat, the two ends of the ground track are respectively provided with a left position proximity switch and a right position proximity switch, the ground track is provided with a drag chain guide groove that cooperates with the welding movable seat, the welding movable seat is provided with a rotary column, the rotary column is slidably connected with a lifting cantilever, the lifting cantilever is slidably connected with a robot moving slide, the lifting cantilever is provided with a lateral guide rail that cooperates with the robot moving slide, the robot moving slide is fixedly connected with a robot mounting seat plate, the robot mounting seat plate is provided with a welding robot, the welding robot is provided with a welding gun, and the welding movable seat is provided with a welding wire barrel that cooperates with the welding gun.

[0007] Furthermore: a robot controller and a whole machine controller are provided on the welding movable seat. The robot controller can control the welding robot, and the whole machine controller can control the clamping components and the welding components.

[0008] Furthermore, the rotary gear discs are each provided with a linear rail telescopic guard plate that matches the rotary platform.

[0009] Furthermore: a sliding groove that cooperates with the bidirectional centering support column is provided on the movable support arm.

[0010] Furthermore: the high-torque self-locking motor can drive the bidirectional centering support column to slide in opposite directions through the high-precision T-type screw, thereby achieving clamping of the workpiece.

[0011] Furthermore: an MES recognition system is provided in the clamping component, which can identify the current workpiece information. The MES recognition system feeds back the identified workpiece information to the whole machine controller, and the whole machine controller will capture the corresponding welding program.

[0012] Furthermore: A welding method for an integral welding workstation of a gantry crane trolley frame, the welding method steps are as follows: S1: Place the workpiece in a suitable position on the clamping component; S2: clamping and fixing the workpiece by means of a clamping component; S3: The MES recognition system identifies the workpiece and feeds back to the machine controller; S4: The whole machine controller grabs the corresponding welding program; S5: The welding program controls the clamping parts and the welding parts to perform welding operations.

[0013] Compared with the prior art, the present invention has the following gain effects: 1. The clamping parts are used to complete the transformation of different postures of the trolley frame product, ensuring that each assembled weld is in the best welding posture when executing the welding procedure.

[0014] 2. Use a new digital welding system to replace traditional manual welding operations, reduce labor intensity, reduce the impact of human factors on weld quality, and ensure the stability of welding quality.

[0015] 3. Multiple devices work synchronously with array fixtures, and the gantry crane trolley frame is assembled and welded as a whole. A better welding process is adopted, which effectively reduces the frame distortion and deformation of the large trolley frame during the welding process.

[0016] 4. The equipment realizes fast and accurate welding operation, effectively ensuring the overall product quality of the workpiece. At the same time, multi-line operation improves operation efficiency while ensuring welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the present invention.

[0018] Figure 2 It is a partial stereogram of the present invention.

[0019] Figure 3 It is a three-dimensional diagram of the present invention during welding.

[0020] Figure 4 This is a state diagram of the present invention during welding.

[0021] In the figure: 1. Fixed variable position support seat, 2. High-load linear rail, 3. Bidirectional centering support column, 4. High-torque self-locking motor, 5. Mobile support arm, 6. High-precision helical gear, 7. Rotary platform, 8. Transmission gear, 9. Servo motor, 10. High-precision T-type lead screw, 11. High-load slider, 12. Rotary gear plate, 13. Support frame, 14. Linear rail telescopic guard plate, 15. Left position proximity switch, 16. Ground track, 17. Drag chain guide groove, 18. Welding gun, 19. Welding robot, 20. Robot mounting base, 21. Robot moving slide, 22. Lateral guide linear rail, 23. Wire barrel, 24. Lifting cantilever, 25. Welding moving seat, 26. Right position proximity switch, 27. Rotary column, 28. Robot controller, 29. Machine controller, 31. Base. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] A gantry crane trolley frame integral welding workstation is used for integrally welding the trolley frame, comprising a base 31 on which a clamping component and a pair of welding components are provided; the welding components are symmetrically arranged on both sides of the clamping component; The clamping component is used to fix the workpiece and adjust the angle of the workpiece during the welding process; The welding component is used to weld the workpiece clamped by the clamping component.

[0024] The clamping component includes a support frame 13 fixed to the base 31, and both ends of the support frame 13 are fixedly connected to a fixed variable position support seat 1, and the fixed variable position support seat 1 is rotatably connected to a rotary gear disk 12, and the rotary gear disks 12 on the fixed variable position support seat 1 correspond to each other; a rotary platform 7 is provided between the rotary gear disks 12, and both ends of the rotary platform 7 are respectively fixed to the rotary gear disks 12; a plurality of mobile support arms 5 are slidably connected to the rotary platform 7, and the mobile support arms 5 are arranged in an array on the rotary platform 7. A pair of bidirectional centering supporting columns 3 are slidably connected, and a high-precision T-type screw rod 10 and a high-torque self-locking motor 4 that cooperate with the bidirectional centering supporting columns 3 are provided in the mobile support arm 5; a high-load linear rail 2 and high-precision helical gear 6 that cooperate with the mobile support arm 5 are provided on the rotary platform 7, and a transmission gear 8 that cooperates with the high-precision helical gear 6 is provided on the mobile support arm 5; a high-load slider 11 that cooperates with the high-load linear rail 2 is provided on the mobile support arm 5; a servo motor 9 that cooperates with the transmission gear 8 is fixed to the mobile support arm 5.

[0025] The welding components include a welding movable seat 25 slidably connected to the base 31, a ground track 16 cooperating with the welding movable seat 25 is provided on the base 31, a left position proximity switch 15 and a right position proximity switch 26 are respectively provided at both ends of the ground track 16, a drag chain guide groove 17 cooperating with the welding movable seat 25 is provided on the ground track 16, a rotary column 27 is provided on the rotary column 27, a lifting cantilever 24 is slidably connected to the rotary column 27, a robot moving slide 21 is slidably connected to the lifting cantilever 24, a lateral guide rail 22 cooperating with the robot moving slide 21 is provided on the lifting cantilever 24, a robot mounting seat plate 20 is fixed to the robot moving slide 21, a welding robot 19 is provided on the robot mounting seat plate 20, a welding robot 19 is provided on the welding robot 19, a welding gun 18 is provided on the welding movable seat 25, and a welding wire barrel 23 cooperating with the welding gun 18 is provided on the welding movable seat 25.

[0026] The welding movable seat 25 is provided with a robot controller 28 and a whole machine controller 29. The robot controller 28 can control the welding robot 19, and the whole machine controller 29 can control the clamping components and the welding components.

[0027] The rotary gear disc 12 is provided with a linear rail telescopic guard plate 14 that matches the rotary platform 7.

[0028] The movable support arm 5 is provided with a sliding groove that matches the bidirectional centering support column 3.

[0029] The high-torque self-locking motor 4 can drive the bidirectional centering support column 3 to slide in opposite directions through the high-precision T-type screw 10, thereby clamping the workpiece.

[0030] The clamping component is provided with an MES identification system, which can identify the current workpiece information. The MES identification system feeds back the identified workpiece information to the whole machine controller 29, and the whole machine controller 29 will capture the corresponding welding program.

[0031] like Figure 1 、 2, 3 and 4: When the workstation is working, the workpiece can be placed on the rotary platform 7 first, and then the workpiece can be fixed by the clamping component. During this process, the servo motor 9 can drive the transmission gear 8 to rotate, and the rotation of the transmission gear 8 can drive the mobile support arm 5 to move horizontally through the high-precision bevel gear 6. The setting of the high-load linear rail 2 and the high-load slider 11 ensures the stability of the horizontal movement of the mobile support arm 5; when the workpiece is clamped, the high-torque self-locking motor 4 rotates through the high-precision T-type screw rod 10 to drive the bidirectional centering support column 3 to slide in opposite directions in the mobile support arm 5, thereby achieving stable clamping of the workpiece; then the MES recognition system recognizes the current workpiece information and feeds the information back to the whole machine controller 29. The whole machine controller 29 selects the corresponding welding program for welding. During the welding process, the welding components on both sides of the clamping component run at the same time. During the welding process, the clamping component will adjust the posture of the workpiece by rotation. During the working process of the welding component, The welding movable seat 25 can slide on the ground track 16, and the setting of the drag chain guide groove 17 ensures the sliding stability of the welding movable seat 25; the setting of the left position proximity switch 15 and the right position proximity switch 26 prevents the welding movable seat 25 from sliding out of range, and the setting of the rotary column 27 on the welding movable seat 25 can realize the rotation adjustment of the lifting cantilever 24, and the robot moving slide 21 on the lifting cantilever 24 can move along the lateral guide rail 22, so as to adjust the horizontal position of the welding robot 19 and the robot mounting seat plate 20, thereby ensuring the all-round adjustment of the welding gun 18; the setting of the welding wire barrel 23 ensures the endurance of the welding gun 18, and the setting of the robot controller 28 can adjust each unit of the welding component according to the welding procedure; it realizes the flexible posture change of the workpiece and the optimization of the welding process during the overall welding operation of the trolley frame, ensures the welding quality of the workpiece, improves the overall operation efficiency and rhythm of the product, reduces the labor intensity, optimizes the workshop working environment, and significantly improves the stability of the welding state. Example 2

[0032] A welding method for an integral welding workstation of a gantry crane trolley frame; the welding method steps are as follows: S1: Place the workpiece in a suitable position on the clamping component; S2: clamping and fixing the workpiece by means of a clamping component; S3: The MES recognition system identifies the workpiece and feeds back to the machine controller 29; S4: The whole machine controller 29 grabs the corresponding welding program; S5: The welding program controls the clamping parts and the welding parts to perform welding operations.

[0033] like Figure 1 、 2, 3 and 4: When the workstation is working, the workpiece can be placed on the rotary platform 7 first, and then the workpiece can be fixed by the clamping component; at the same time, it is necessary to ensure that the center axis of the workpiece coincides with the center axis of the rotary platform 7; then the MES recognition system recognizes the current workpiece information and feeds the information back to the whole machine controller 29, the whole machine controller 29 selects the corresponding welding program to operate, and then the whole machine controller 29 controls the robot controller 28 and the clamping component to perform welding operations. At this time, the welding components on both sides of the clamping component start welding operations at the same time, and welding operations are performed on the weld seam on the surface of the workpiece; wait After the upper surface welding is completed, the welding components automatically move to the end safety zone, and the clamping components drive the workpiece to flip 90 degrees, adjusting the vertical weld posture of the workpiece after assembly to the flat weld posture. After receiving the in-place instruction, the welding components automatically perform welding operations on the flat welds (original vertical welds) of the ribs and connectors, ensuring the maximum welding coverage of the workpiece product while improving the quality of the assembly welds between the connecting structures; achieving fast and accurate welding operations, effectively ensuring the overall product quality of the workpiece, and at the same time, multi-line operations improve operating efficiency while ensuring welding quality.

[0034] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A gantry crane trolley frame integral welding workstation, used for integral welding of the trolley frame, characterized by: The invention comprises a base (31), wherein a clamping component and a pair of welding components are provided on the base (31); the welding components are symmetrically arranged on both sides of the clamping component; The clamping component is used to fix the workpiece and adjust the angle of the workpiece during the welding process; The welding component is used to weld the workpiece clamped by the clamping component.

2. The integral welding workstation for the gantry crane trolley frame according to claim 1 is characterized in that: The clamping component includes a support frame (13) fixed on the base (31), both ends of the support frame (13) are fixedly connected to a fixed displacement support seat (1), and the fixed displacement support seat (1) is rotatably connected to a rotary gear disk (12), and the rotary gear disks (12) on the fixed displacement support seat (1) correspond to each other; a rotary platform (7) is provided between the rotary gear disks (12), and both ends of the rotary platform (7) are respectively fixedly connected to the rotary gear disks (12); a plurality of movable support arms (5) are slidably connected to the rotary platform (7), and the movable support arms (5) are arranged in an array on the rotary platform (7). A pair of bidirectional centering support columns (3) are dynamically connected, and a high-precision T-type screw rod (10) and a high-torque self-locking motor (4) that match the bidirectional centering support columns (3) are arranged in the movable support arm (5); a high-load linear rail (2) and high-precision helical gear (6) that match the movable support arm (5) are arranged on the rotary platform (7), and a transmission gear (8) that matches the high-precision helical gear (6) is arranged on the movable support arm (5); a high-load slider (11) that matches the high-load linear rail (2) is arranged on the movable support arm (5); and a servo motor (9) that matches the transmission gear (8) is fixedly connected to the movable support arm (5).

3. The integral welding workstation for the gantry crane trolley frame according to claim 1 is characterized in that: The welding component includes a welding movable seat (25) slidably connected to a base (31), a ground track (16) matched with the welding movable seat (25) is provided on the base (31), a left position proximity switch (15) and a right position proximity switch (26) are respectively provided at both ends of the ground track (16), a drag chain guide groove (17) matched with the welding movable seat (25) is provided on the ground track (16), a rotary column (27) is provided on the welding movable seat (25), and a lifting suspension is slidably connected to the rotary column (27). The arm (24) is slidably connected to a robot moving slide (21) on the lifting cantilever (24), a lateral guide rail (22) matching the robot moving slide (21) is provided on the lifting cantilever (24), a robot mounting seat (20) is fixedly connected to the robot moving slide (21), a welding robot (19) is provided on the robot mounting seat (20), a welding gun (18) is provided on the welding robot (19), and a welding wire barrel (23) matching the welding gun (18) is provided on the welding movable seat (25).

4. The integral welding workstation for the gantry crane trolley frame according to claim 3 is characterized in that: A robot controller (28) and a whole machine controller (29) are provided on the welding movable seat (25). The robot controller (28) can control the welding robot (19), and the whole machine controller (29) can control the clamping components and the welding components.

5. The integral welding workstation for the gantry crane trolley frame according to claim 2 is characterized in that: The rotary gear disc (12) is provided with a linear rail telescopic guard plate (14) that matches the rotary platform (7).

6. The integral welding workstation for the gantry crane trolley frame according to claim 2 is characterized in that: The movable support arm (5) is provided with a sliding groove that matches the bidirectional centering support column (3).

7. The integral welding workstation for the gantry crane trolley frame according to claim 2 is characterized in that: The high-torque self-locking motor (4) can drive the bidirectional centering support column (3) to slide in opposite directions through the high-precision T-type screw rod (10), thereby achieving clamping of the workpiece.

8. The integral welding workstation for the gantry crane trolley frame according to claim 4 is characterized in that: The clamping component is provided with an MES identification system that can identify the current workpiece information. The MES identification system feeds back the identified workpiece information to the whole machine controller (29), and the whole machine controller (29) captures the corresponding welding program.

9. A welding method for a gantry crane trolley frame integral welding workstation according to claims 1-8, characterized in that: The welding method steps are as follows: S1: Place the workpiece in a suitable position on the clamping component; S2: clamping and fixing the workpiece by means of a clamping component; S3: The MES recognition system identifies the workpiece and feeds back to the machine controller (29); S4: The whole machine controller (29) grabs the corresponding welding program; S5: The welding program controls the clamping parts and the welding parts to perform welding operations.

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