A kind of anti-toppling device for T-shaped steel after welding
By uniformly heating the web during the welding process and using a support head and limiting ring structure, the problem of tipping caused by deformation after welding of T-shaped steel was solved, achieving stable workpiece transportation and simplified operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JINFENG WELDING & CUTTING MACHINERY MFR
- Filing Date
- 2025-06-24
- Publication Date
- 2026-08-04
AI Technical Summary
Existing technologies for welding T-shaped steel, especially for workpieces with short webs, are prone to severe deformation due to differences in welding heat, which can cause the workpiece to tip over or become untransportable. Furthermore, existing straightening and clamping solutions suffer from low efficiency, safety issues, or clamp damage.
The welding process employs a heating device to evenly heat both sides of the web plate, while using a movable support head and limiting ring structure to prevent the workpiece from tipping over and avoid clamping operations.
It effectively prevents the T-shaped steel from tipping over after welding, simplifies the operation process, improves production efficiency, reduces fixture damage, and ensures smooth workpiece transport.
Smart Images
Figure CN224587313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an anti-tipping device for T-shaped steel after welding. Background Technology
[0002] T-beams are widely used in shipbuilding, serving as ribs, longitudinal beams, and bulkhead reinforcements. T-beams are typically formed by welding. Before welding, spot welding is performed between the flanges and web of the T-beam to create a preliminary T-shape. This preliminary shape is then conveyed to the conveyor rollers of the welding equipment, with the flanges lying flat and the web vertically facing upwards. A welding torch on a movable gantry of the welding equipment is then used to fully weld the junction between the flanges and web. During welding, clamping devices are used to hold the flanges in place. For T-beams with higher webs, deformation during welding is relatively small. However, for T-beams with lower webs, the welding point, being the junction of the flanges and web, generates significant heat, while other parts of the workpiece remain unheated. This heat difference causes severe deformation, making the workpiece prone to tipping over or completely unusable for conveying by the rollers after welding.
[0003] To address this issue, CN1820868A, CN107052667A, and CN112517672A employ methods that disregard deformation during the welding stage, instead using straightening devices in subsequent processes. This production method requires each welded T-shaped steel section to be lifted individually from the welding station to the straightening device using an overhead crane, resulting in low production efficiency and operational safety issues. The technical solution disclosed in the "Hualian Technology - Digital Fully Automated T-Shaped Steel Production Line" published on May 19, 2025, by the WeChat public account "Wuxi Hualian Technology Group Co., Ltd." is essentially the same as the existing technology solution mentioned above. However, to prevent the workpiece from tipping over due to deformation after welding, it simply flips the welded workpiece over, placing the flange and web simultaneously on the conveyor rollers for transport. While this method can transport deformed workpieces, it requires flipping them back to a vertical position when they are subsequently sent to the straightening station, a cumbersome process that is clearly not a good solution.
[0004] CN220515820U, CN201735991U, CN105290585A, etc., offer another, better approach: clamping the workpiece with a fixture to resist deformation. However, this approach has drawbacks: the fixture cannot completely eliminate component deformation, and the reaction force exerted on the fixture when the workpiece deforms is also significant, making the fixture prone to damage. Utility Model Content
[0005] In order to overcome the above-mentioned shortcomings in the prior art, this utility model provides an anti-tipping device for T-shaped steel after welding. It is applied to T-shaped steel welding equipment and can prevent the workpiece from easily tipping over due to deformation after welding to a certain extent. It is also simple and easy to implement.
[0006] The technical solution to the technical problem of this utility model is: a welding process for T-shaped steel, which involves welding using T-shaped steel welding equipment;
[0007] The T-shaped steel welding equipment includes a base frame, on which a clamping device, a conveying roller that can rotate around its central axis, and a gantry frame that can move along the base frame are provided. The gantry frame is provided with a first welding gun and a second welding gun.
[0008] During welding, the flange of the T-shaped steel is placed flat on the conveyor roller, and the web is vertically upward. The flange is clamped by the clamping device. The gantry moves, and the first welding gun and the second welding gun are used to weld the junction of the web and the flange on both sides of the web.
[0009] The gantry frame is also equipped with a first heating device and a second heating device. When welding the junction of the web plate and the wing plate with the first welding gun and the second welding gun, the two sides of the web plate are heated simultaneously by the first heating device and the second heating device.
[0010] The base frame is also equipped with an anti-tipping device after the T-shaped steel is welded. The anti-tipping device includes a fixed frame that is vertically fixed on the base frame, a lifting frame that can move up and down on the fixed frame, and an up and down driving mechanism for driving the lifting frame to move up and down on the fixed frame.
[0011] The upper end of the lifting frame is provided with an auxiliary support roller. The lifting frame is also provided with a first mounting seat and a second mounting seat. The first mounting seat and / or the second mounting seat can move horizontally. The first mounting seat and / or the second mounting seat is driven by a horizontal drive mechanism. The first mounting seat is provided with a first support head. The second mounting seat is provided with a second support head that is flush with the height of the first support head. The first support head and the second support head are higher than the auxiliary support roller.
[0012] After the workpiece is welded, the lifting frame rises under the drive of the lifting drive mechanism until the auxiliary support roller abuts against the wing plate. Then, the first mounting seat and / or the second mounting seat move horizontally so that the wing plate is located between the first support head and the second support head to prevent the workpiece from tipping over. After that, the clamping device releases the wing plate, and the workpiece is conveyed by the conveying roller.
[0013] Furthermore, the first support head is provided with a first limiting ring that protrudes radially outward, and the second support head is provided with a second limiting ring that protrudes radially outward and is level with the height of the first limiting ring. Both the first limiting ring and the second limiting ring are higher than the auxiliary support roller.
[0014] When the wing plate is located between the first support head and the second support head, the wing plate is located below the first limiting ring and the second limiting ring.
[0015] Furthermore, the clamping device includes a fixed block and a movable seat that can move horizontally. The movable seat is provided with a clamping block that is directly opposite the fixed block, and the base frame is provided with a movable seat drive mechanism for driving the movable seat.
[0016] Furthermore, both the first heating device and the second heating device are either flame guns or induction heating devices.
[0017] Furthermore, the first heating device and the second heating device heat the upper ends of both sides of the web plate.
[0018] Furthermore, the fixed frame is provided with vertical lifting guide rails on both sides, and the lifting frame is provided with guide wheels on both sides, with the guide wheels abutting against the lifting guide rails.
[0019] Furthermore, the up-and-down driving mechanism is a vertical up-and-down driving cylinder, and the piston rod of the up-and-down driving cylinder is connected to the lifting frame.
[0020] Both the first mounting base and the second mounting base are capable of horizontal movement, and the horizontal drive mechanism is a horizontally positioned horizontal drive cylinder.
[0021] Furthermore, the piston rod of the horizontal drive cylinder is connected to the second mounting base, and the cylinder barrel of the horizontal drive cylinder is fixed on the first mounting base.
[0022] Furthermore, the first mounting base is provided with a clamping bracket, which clamps the cylinder of the horizontal drive cylinder.
[0023] The beneficial effects of this utility model are that it can prevent the workpiece from easily tipping over due to deformation after welding, and it is simple and easy to implement. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the front of the anti-tipping device.
[0025] Figure 2 This is a structural diagram of the back of the anti-tipping device.
[0026] Figure 3This is a schematic diagram of the guide wheel setup.
[0027] Figure 4 This is a schematic diagram of the structure of the lifting frame driven by the lifting drive cylinder.
[0028] Figure 5 This is an installation diagram of the first mounting bracket and the second mounting bracket.
[0029] Figure 6 This is a schematic diagram of the rear structure of the first mounting base and the second mounting base.
[0030] Figure 7 This is a front structural diagram of the first mounting base and the second mounting base.
[0031] Figure 8 This is a schematic diagram of the anti-tipping device in the anti-tipping state.
[0032] Figure 9 This is a schematic diagram showing the interaction between the anti-tipping device and the workpiece in the anti-tipping state.
[0033] Figure 10 This is a top view of the welding equipment.
[0034] Figure 11 This is a partial front view of the welding equipment during welding.
[0035] Figure 12 This is a partial side view of the welding equipment during welding. Detailed Implementation
[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0037] Reference Figures 1-12 A welding process for T-shaped steel, which involves welding using T-shaped steel welding equipment.
[0038] The T-shaped steel welding equipment includes a base frame 1, on which a clamping device, a conveying roller 2, and a gantry frame 3 capable of moving along the base frame are mounted. A first welding torch 4 and a second welding torch 5 are mounted on the gantry frame 3. The movement of the gantry frame 3 on the base frame is existing technology and will not be described further. The conveying roller 2 is used to receive the preliminary T-shaped steel form from the previous process (i.e., spot welding between the flanges and web of the T-shaped steel to initially form the T-shaped steel component) and to continue conveying the workpiece after welding. Therefore, the conveying roller can rotate around its central axis. The method of driving the conveying roller to rotate is existing technology and will not be described further.
[0039] During welding, the wing plate 6 of the T-shaped steel is placed flat on the conveyor roller, and the web plate 7 is vertically upward. The wing plate is clamped by a clamping device. Then, the gantry 3 moves, and the first welding gun 4 and the second welding gun 5 simultaneously weld the junction of the web plate 7 and the wing plate 6 on both sides of the web plate 7. The clamping device can be a clamping device of the prior art. For example, the clamping device includes a fixed block 8 and a horizontally movable seat 9. The movable seat 9 is provided with a clamping block 10 opposite to the fixed block 8. The base frame 1 is provided with a movable seat drive mechanism for driving the movable seat 9. Under the drive of the movable seat drive mechanism, the movable seat 9 moves towards the fixed block 8, thereby clamping the wing plate 6 between the fixed block 8 and the clamping block 10. The movable seat drive mechanism can be a cylinder, hydraulic cylinder, electric push rod, or a belt drive mechanism, chain drive mechanism, etc. To enable smoother movement of the movable seat 9, rollers are provided on the movable seat 9 in this embodiment, and concave wheel grooves are provided on the base frame 1, with the rollers located in the wheel grooves. Of course, other structural forms can also be used to ensure smooth movement of the movable seat, such as providing guide grooves on the base frame and guide rails on the movable seat that are adapted to the guide grooves.
[0040] The gantry 3 is also equipped with a first heating device 11 and a second heating device 12. When welding the junction of the web plate 7 and the wing plate 6 using the first welding torch 4 and the second welding torch 5, the first heating device 11 and the second heating device 12 simultaneously heat both sides of the web plate 7. Specifically, the first heating device 11 and the second heating device 12 can be flame torches, or they can be other forms, such as induction heating devices. As described in the background art, the main reason for workpiece deformation during welding is that welding generates a large amount of heat, while other parts of the workpiece are not heated. Under the influence of this heat difference, the workpiece deforms severely, especially the web plate 7, whose upper part is almost unheated. Therefore, in this application, the first heating device 11 and the second heating device 12 are used to heat both sides of the web plate 7, making the web plate 7 more evenly heated overall, thus reducing the likelihood of deformation during welding. Preferably, the first heating device 11 and the second heating device 12 heat the upper ends of both sides of the web plate, so that both the lower and upper ends of the web plate 7 are heated, making the overall heating of the web plate 7 more uniform and less prone to deformation.
[0041] After taking the above measures, the T-shaped steel is not easily deformed during the welding process, so the workpiece is not easily tilted after welding. Thus, after welding is completed and the clamping device releases the wing plate 6, it can be conveyed forward by the conveyor roller. However, even after taking the above measures, it is difficult to guarantee that the workpiece will not deform. Therefore, an anti-tipping device is also provided on the base frame 1 after the T-shaped steel is welded to prevent the T-shaped steel from tilting after welding. However, due to the aforementioned measures, the deformation of the T-shaped steel is small, and the anti-tipping device only needs to prevent the workpiece from tilting. There is no need to perform harsh pressing or clamping operations on the workpiece.
[0042] The anti-tipping device includes a fixed frame 13 vertically fixed to the base frame 1. The fixed frame 13 has a lifting frame 14 capable of vertical movement, and the fixed frame 13 also has a lifting drive mechanism for driving the lifting frame 14 to move vertically. To ensure the lifting frame 14 can move smoothly and stably on the fixed frame 13, a guide mechanism is usually provided between the fixed frame 13 and the lifting frame 14, such as mutually cooperating guide rails and guide grooves. In one embodiment, vertical lifting guide rails 15 are provided on both sides of the fixed frame 13, and guide wheels 16 are provided on both sides of the lifting frame 14. The guide wheels 16 abut against the lifting guide rails 15 to guide the lifting of the lifting frame 14. Preferably, the guide wheels 16 have grooves on their sides, and the grooves of the guide wheels 16 abut against the lifting guide rails 15 to form a more effective lifting guide.
[0043] The upper end of the lifting frame 14 is provided with an auxiliary support roller 17. The lifting frame 14 is also provided with a first mounting seat 18 and a second mounting seat 19. The first mounting seat 18 and / or the second mounting seat 19 can move horizontally and are driven by a horizontal drive mechanism. The first mounting seat 18 is provided with a first support head 20, and the second mounting seat 19 is provided with a second support head 21 that is flush with the height of the first support head 20. The first support head 20 and the second support head 21 are higher than the auxiliary support roller 17. After the workpiece is welded, the lifting frame 14 rises under the drive of the lifting drive mechanism until the auxiliary support roller 17 abuts against the wing plate 6. Then, the first mounting seat 18 and / or the second mounting seat 19 move horizontally so that the wing plate 6 is located between the first support head 20 and the second support head 21 to prevent the workpiece from tipping over. That is, once the first mounting base 18 and / or the second mounting base 19 move horizontally, the first support head 20 and the second support head 21 are located on both sides of the wing plate 6, and are close to or abutting against both sides of the wing plate 6. At this time, the purpose of preventing the workpiece from tipping over can be achieved, while the workpiece is not clamped and can be conveyed forward. Afterwards, the clamping device releases the wing plate 6, and the workpiece continues to be conveyed forward by the conveying roller 2.
[0044] In one embodiment, the first support head 20 is provided with a first limiting ring 22 that protrudes radially outward, and the second support head 21 is provided with a second limiting ring 23 that protrudes radially outward and is flush with the height of the first limiting ring 22. Both the first limiting ring 22 and the second limiting ring 23 are higher than the auxiliary support roller 17. When the wing plate 6 is located between the first support head 20 and the second support head 21, the wing plate 6 is located below the first limiting ring 22 and the second limiting ring 23 to further limit the movement space of the workpiece and help prevent the workpiece from tipping over.
[0045] In one embodiment, the lifting drive mechanism is a vertical lifting drive cylinder 24, and the piston rod of the lifting drive cylinder 24 is connected to the lifting frame 14; both the first mounting base 18 and the second mounting base 19 are capable of horizontal movement, and the horizontal drive mechanism is a horizontally positioned horizontal drive cylinder 25. Both the lifting drive mechanism and the horizontal drive mechanism use cylinders, and both the first mounting base 18 and the second mounting base 19 can move horizontally. The beneficial effect is that they can automatically adapt to deformed T-shaped steel. As mentioned above, even if the first heating device 11 and the second heating device 12 are used to heat the web plate 7, it is difficult to avoid deformation of the web plate 7 and the wing plate 6 after welding. Therefore, both the lifting drive mechanism and the horizontal drive mechanism use cylinders. Cylinders can better adapt to deformed T-shaped steel. The air pressure of the cylinder can be relatively small. When the wing plate 6 is laterally bent and deformed, the deformed wing plate can push open the first support head 20 or the second support head 21 during the workpiece conveying process. When the web plate 7 has a downward arching deformation, the deformed web plate can push down the auxiliary support roller 17 during the workpiece conveying process. When the web plate has an arching deformation, the lifting drive cylinder can also push the auxiliary support roller 17 upward during the workpiece conveying process. The specific structure that enables the first mounting base 18 and the second mounting base 19 to move horizontally can be a sliding mechanism provided between the first mounting base 18 and the lifting frame 14, and between the second mounting base 19 and the lifting frame 14. For example, a horizontal slide groove 26 is provided on the lifting frame 14, and a horizontal slide rail is provided on the first mounting base 18 and the second mounting base 19, with the horizontal slide rail located in the horizontal slide groove 26.
[0046] In one embodiment, the horizontal drive cylinder 25 is configured such that the piston rod of the horizontal drive cylinder 25 is connected to the second mounting base 19, and the cylinder barrel of the horizontal drive cylinder 25 is fixed to the first mounting base 18. A specific fixing method could be: the first mounting base 18 is provided with a clamping bracket 27, which clamps the cylinder barrel of the horizontal drive cylinder 25. At this time, if the second mounting base 19 and the lifting frame 14 are more tightly fitted, air will be supplied to the cylinder of the horizontal drive cylinder 25, causing the cylinder to move and thus driving the first mounting base 18 to move; if the first mounting base 18 and the lifting frame 14 are more tightly fitted, air will be supplied to the cylinder of the horizontal drive cylinder, causing the piston rod to move and thus driving the second mounting base 19 to move; if the fit between the first mounting base 18 and the lifting frame 15 and the fit between the second mounting base 19 and the lifting frame 14 are equally tight, air will be supplied to the cylinder of the horizontal drive cylinder 25, causing the cylinder to move and thus driving the first mounting base 18 to move, and the piston rod to move and thus driving the second mounting base 19 to move.
[0047] Of course, when both the first mounting base 18 and the second mounting base 19 can move horizontally, two cylinders can be installed on the lifting frame 14 respectively, and the piston rods of the two cylinders are connected to the first mounting base 18 and the second mounting base 19 respectively; when either the first mounting base 18 or the second mounting base 19 can move horizontally, a cylinder can be installed on the lifting frame 14, and the piston rod of the cylinder is connected to the first mounting base 18 or the second mounting base 19.
[0048] Of course, the lifting and horizontal driving mechanisms can also be implemented using other methods, such as hydraulic cylinders, electric push rods, lead screw mechanisms, belt drive mechanisms, chain drive mechanisms, etc. However, the above structures cannot or are difficult to achieve the aforementioned effect of automatically adapting to deformation of T-shaped steel.
[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0050] The embodiments of this utility model have been described above. However, this utility model is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A device for preventing T-shaped steel from falling after welding, comprising a vertical fixing frame, characterized in that: The fixed frame is equipped with a lifting frame that can move up and down, and the fixed frame is also equipped with a vertical drive mechanism for driving the lifting frame to move up and down. The upper end of the lifting frame is provided with an auxiliary support roller. The lifting frame is also provided with a first mounting seat and a second mounting seat. The first mounting seat and / or the second mounting seat can move horizontally. The first mounting seat and / or the second mounting seat is driven by a horizontal drive mechanism. The first mounting seat is provided with a first support head. The second mounting seat is provided with a second support head that is flush with the height of the first support head. The first support head and the second support head are higher than the auxiliary support roller.
2. The anti-toppling device for T-shaped steel after welding according to claim 1, characterized in that: The first support head is provided with a first limiting ring that protrudes radially outward, and the second support head is provided with a second limiting ring that protrudes radially outward and is level with the height of the first limiting ring. Both the first limiting ring and the second limiting ring are higher than the auxiliary support roller.
3. The anti-toppling device for T-shaped steel after welding according to claim 1, characterized in that: The fixed frame has vertical lifting guide rails on both sides, and the lifting frame has guide wheels on both sides, with the guide wheels resting against the lifting guide rails.
4. The anti-toppling device for T-bar welding completion according to claim 1, characterized in that: The up-and-down driving mechanism is a vertical up-and-down driving cylinder, and the piston rod of the up-and-down driving cylinder is connected to the lifting frame. The horizontal drive mechanism is a horizontally positioned horizontal drive cylinder.
5. The anti-toppling device for T-shaped steel after welding according to claim 4, characterized in that: The piston rod of the horizontal drive cylinder is connected to the second mounting base, and the cylinder barrel of the horizontal drive cylinder is fixed on the first mounting base.
6. The anti-toppling device for T-shaped steel after welding according to claim 5, characterized in that: The first mounting base is provided with a clamping bracket, which clamps the cylinder of the horizontal drive cylinder.