Portal frame suitable for supporting large welding structural component

Abstract

The invention relates to the technical field of transportation of large welding structural parts, in particular to a portal frame suitable for supporting a large welding structural part. The portal frame suitable for supporting the large welding structural part comprises a plurality of bases, a height-adjustable flat car, a mounting plate, a long-strip-shaped hole and a driving assembly, the close sides of every two bases are fixedly connected with a frame body, the sides of the bases and the frame bodies are fixedly connected with a plurality of steps correspondingly, the top ends of the frame bodies are fixedly connected with bearing blocks, and the bearing blocks are fixedly connected with the mounting plate. Supporting frames are fixedly connected to the sides, close to each other, of the two bearing blocks, C-shaped grooves are formed in the top ends of the supporting frames, gravity sensors are installed at the bottom ends of the inner walls of the C-shaped grooves, and mounting plates are fixedly connected to the sides, close to each other, of the two supporting frames. The supporting device can be suitable for supporting welding structural parts of different sizes, transportation under the hoisting-free condition is achieved, the connecting stability of a vehicle and a portal frame is enhanced, and the risks of component sliding, portal frame unbalance and the like in the transportation process are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of transporting large-scale welding structural components, and in particular to a portal frame suitable for supporting large-scale welding structural components. Background Art

[0002] Large welded structures are large structures with specific shapes and functions, formed by connecting metal sheets, profiles, and other components through welding. They are commonly used in bridges, ships, construction machinery, heavy equipment, and other fields. Characterized by their large size and strong load-bearing capacity, they require customized design and manufacturing based on project requirements. The quality of welding directly impacts the safety and reliability of the structure, often requiring rigorous strength calculations, process planning, and non-destructive testing to ensure stable operation under complex working conditions.

[0003] After welding, most large welded structural parts need to be transported to heat treatment, shot blasting, painting and other processes. There are no cranes in the workshops of these processes, and there are no lifting conditions. They can only be transported by tooling. The transportation flexibility is poor, and it is difficult to cope with complex workshop environments and components of different sizes. The efficiency is low and it is easy to delay the production progress.

[0004] Therefore, it is necessary to provide a new gantry suitable for supporting large welded structural parts to solve the above technical problems. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a portal frame suitable for supporting large welded structural members.

[0006] The present invention provides a door frame suitable for supporting large welded structural parts, comprising: multiple bases, a height-adjustable flatbed, a mounting plate, an elongated hole, and a drive assembly, wherein the adjacent sides of each two bases are fixedly connected to a frame body, and the base and one side of the frame body are respectively fixedly connected to multiple steps, the top of the frame body is fixedly connected to a bearing block, and the adjacent sides of the two bearing blocks are fixedly connected to a support frame, the top of the support frame is provided with a C-shaped groove, and the bottom end of the inner wall of the C-shaped groove is installed with a gravity sensor, the adjacent sides of the two support frames are fixedly connected to the mounting plate, the adjacent sides of the two mounting plates are fixedly connected to a connecting plate, both sides of the connecting plate are fixedly connected to a linear projection lamp, the bottom end of the connecting plate is fixedly connected to a central laser lamp, the bottom end of the support frame is provided with two elongated holes, the inner wall of the elongated hole is slidably connected to a connecting block, the bottom ends of the two connecting blocks are fixedly connected to a limiting plate, and a drive assembly is installed inside the support frame.

[0007] Preferably, the driving assembly includes two accommodating chambers, and the two accommodating chambers are respectively opened on both sides of the interior of the support frame. The inner walls of the accommodating chambers are slidably connected to two sliding blocks, and the inner wall end of one of the accommodating chambers is fixedly connected to a guide rod, and the inner wall of the end of the support frame close to the two supporting blocks is rotatably connected to a bidirectional threaded rod, and the front sides of the two front supporting blocks are fixedly connected to a motor.

[0008] Preferably, adjacent sides of the two limiting plates are in contact with the top surface of the height-adjustable flatbed truck.

[0009] Preferably, the top end of the height-adjustable flatbed is in contact with the bottom end of the support frame.

[0010] Preferably, the driving end of the motor is fixedly connected to one end of the bidirectional threaded rod, and the bottom end of the sliding block is fixedly connected to the top end of the connecting block.

[0011] Preferably, the inner walls of the two sliding blocks are slidably connected to the guide rod.

[0012] Preferably, the inner walls of the other two sliding blocks are threadedly connected to the exterior of the bidirectional threaded rod.

[0013] Compared with the related art, the portal frame provided by the present invention, which is suitable for supporting large welded structural members, has the following beneficial effects:

[0014] The present invention uses structures such as a base, a frame, and a support frame to lift a large welded structure onto a gantry in a workshop by a hoisting crane. Then a height-adjustable flatbed truck passes under the gantry, adjusts the height of the flatbed truck, and lifts the gantry. After the base of the gantry is 200 mm off the ground, it can be transported. The invention is suitable for supporting welded structural parts of different sizes and realizes transportation without lifting conditions.

[0015] The present invention defines the guide boundary of the gantry entrance by projecting parallel straight lines through a linear projection lamp, and the central laser lamp projects a central light corresponding to the center position of the gantry, providing guidance for the driving of the height-adjustable flatbed truck, and cooperating with the drive component to drive the limit plate to move and limit, thereby solving the problem of transportation alignment when there is no lifting operation, and ensuring the accurate entry and exit of the flatbed truck.

[0016] The present invention uses driving components such as motors and bidirectional threaded rods to quickly move the limit plate, so that the limit plate clamps the flatbed truck, enhances the stability of the connection between the truck and the gantry, reduces the risks of component sliding and gantry imbalance during transportation, ensures the safety of personnel, equipment and large welded structures, and meets the needs of stable transportation under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a gantry suitable for supporting large welded structural members provided by the present invention;

[0018] Figure 2 for Figure 1 The structural diagram of the frame shown;

[0019] Figure 3 for Figure 2 A magnified view of point A in the figure;

[0020] Figure 4 for Figure 1 Schematic diagram of the structure of the support frame shown.

[0021] Numbers in the figure: 1. Base; 2. Frame; 3. Step; 4. Load-bearing block; 5. Support frame; 6. C-shaped groove; 7. Gravity sensor; 8. Mounting plate; 9. Connecting plate; 10. Linear projection lamp; 11. Center laser lamp; 12. Height-adjustable flatbed; 13. Long hole; 14. Connecting block; 15. Limiting plate; 16. Accommodating chamber; 17. Sliding block; 18. Guide rod; 19. Bidirectional threaded rod; 20. Motor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0024] See also Figures 1 to 4 , a gantry suitable for supporting large welded structural parts, a gantry suitable for supporting large welded structural parts comprises: multiple bases 1, the base 1 is triangular, narrow at the top and wide at the bottom, used to support the entire gantry, maintain balance, and a height-adjustable flatbed trolley 12, one side of each two bases 1 is fixedly connected with a frame body 2, the frame body 2 is mainly to ensure the height of the gantry, the height depends on the height of the vehicle that can pass under the gantry, the base 1 and one side of the frame body 2 are respectively fixedly connected with multiple steps 3, the steps 3 are for facilitating climbing the gantry, the top of the frame body 2 is fixedly connected with a bearing block 4, the adjacent sides of the two bearing blocks 4 are fixedly connected with a support frame 5, the support frame 5 ensures the load-bearing capacity of the gantry, the top of the support frame 5 is provided with a C-shaped groove 6, the bottom end of the inner wall of the C-shaped groove 6 is installed with a gravity sensor 7, which is used to measure the weight of the large welded structural parts on the gantry and display it;

[0025] Mounting plate 8, the adjacent side of the two support frames 5 is fixedly connected with the mounting plate 8, the mounting plate 8 provides a stable carrier for the subsequent installation of components such as the connecting plate 9, the adjacent side of the two mounting plates 8 is fixedly connected with the connecting plate 9, the connecting plate 9 plays the role of connection and bearing, and effectively connects the mounting plates 8 on both sides, both sides of the connecting plate 9 are fixedly connected with linear projection lamps 10, the linear projection lamp 10 can project clear light, the bottom end of the connecting plate 9 is fixedly connected with a central laser lamp 11, the central laser lamp 11 can emit a precise laser beam, the top end of the height-adjustable flatbed trolley 12 is in contact with the bottom end of the support frame 5, so that the jacking and transportation of the gantry can be achieved by adjusting the height of the flatbed trolley later;

[0026] The elongated hole 13 and the bottom end of the support frame 5 are provided with two elongated holes 13, which provide a track space for the sliding of the connecting block 14. The inner wall of the elongated hole 13 is slidably connected with the connecting block 14. The connecting block 14 can slide flexibly in the elongated hole 13 to transmit power and connect. The bottom ends of the two connecting blocks 14 are fixedly connected to the limiting plate 15. The limiting plate 15 is used to limit the position of the height-adjustable flatbed trolley 12. The adjacent side of the two limiting plates 15 contacts the top surface of the height-adjustable flatbed trolley 12 to ensure that the position of the flatbed trolley is stable during the transportation of the gantry.

[0027] The driving assembly is installed inside the support frame 5. The driving assembly is the power source for realizing the movement of the limit plate 15. The driving assembly includes two accommodating chambers 16. The two accommodating chambers 16 are respectively opened on both sides of the interior of the support frame 5. The accommodating chamber 16 provides an accommodating space for the sliding of the sliding block 17. The inner wall of the accommodating chamber 16 is slidably connected to two sliding blocks 17. The sliding block 17 can slide smoothly in the accommodating chamber 16. The bottom end of the sliding block 17 is fixedly connected to the top of the connecting block 14, thereby transmitting the movement of the sliding block 17 to the connecting block 14. A guide rod 18 is fixedly connected to the inner wall end of one of the accommodating chambers 16. The guide rod 18 guides and stabilizes the sliding of the sliding block 17. Function, wherein the inner walls of the two sliding blocks 17 are slidably connected to the guide rod 18 to ensure that the sliding block 17 slides along a predetermined direction, and the inner wall of the end of the support frame 5 close to the two bearing blocks 4 is rotatably connected with a bidirectional threaded rod 19, and the rotation of the bidirectional threaded rod 19 can drive the sliding block 17 matched therewith to move, and the inner walls of the other two sliding blocks 17 are threadedly connected to the outside of the bidirectional threaded rod 19, and power transmission is achieved by means of thread transmission. The front sides of the two front bearing blocks 4 are fixedly connected with a motor 20, which provides power for the entire drive assembly. The driving end of the motor 20 is fixedly connected to one end of the bidirectional threaded rod 19. When the motor 20 is running, it drives the bidirectional threaded rod 19 to rotate, thereby driving the entire drive assembly to operate.

[0028] The working principle of a gantry suitable for supporting large-scale welded structural parts provided by the present invention is as follows: when transporting large-scale welded structural parts, it is first necessary to use a lifting crane to lift the large-scale welded structural parts into the C-shaped groove 6 on the support frame 5 of the gantry, and contact the gravity sensor 7 to monitor the weight of the large-scale welded structural parts in real time, providing data reference for the safety of the transportation operation. When carrying out the transportation operation of supporting large-scale welded structural parts, the structural parts are first lifted to the gantry by the lifting crane. At this time, the linear projection lamp 10 is started and two parallel straight lines are projected to the ground. These two straight lines are equivalent to the guiding boundaries of the gantry entrance. The height-adjustable flatbed truck 12 needs to travel along the channel between the straight lines, and use the clear guidance of the straight lines to avoid the flatbed truck from deviating from the direction when driving; at the same time, the center laser light 11 is turned on synchronously to project a precise center light downward. The light corresponds to the center position of the gantry, and the flatbed truck driver The machine uses the central light as a reference to adjust the vehicle's trajectory, and then starts the motor 20. The operation of the motor 20 drives the bidirectional threaded rod 19 to rotate. Since the inner walls of the other two sliding blocks 17 are threadedly connected to the outer sides of the bidirectional threaded rod 19, under the action of the rotation of the bidirectional threaded rod 19, the two sliding blocks 17 begin to slide on the inner wall of the accommodating chamber 16. At the same time, the inner walls of the two sliding blocks 17 are slidably connected to the guide rod 18. The guide rod 18 guides and stabilizes the sliding of the sliding blocks 17. As the sliding blocks 17 slide, the connecting blocks 14 are driven to slide on the inner walls of the long holes 13, thereby moving the limiting plate 15 to limit the travel route of the height-adjustable flatbed trolley 12, and assisting the flatbed trolley to move along the straight line area projected by the linear projection lamp 10 and toward the center position corresponding to the central laser lamp 11, to ensure that the flatbed trolley can accurately pass under the gantry and smoothly reach the bottom of the gantry.

[0029] After the flatbed trolley is in place, operate the height-adjustable flatbed trolley 12 so that its top end gradually rises and contacts the bottom end of the support frame 5, and continue to adjust the height of the flatbed trolley until the base 1 of the gantry is 200 mm off the ground. At this time, the gantry is lifted up by the flatbed trolley and is in a transportable state. Then the motor 20 is driven again, so that the two limit plates 15 continue to move, clamping the top surface of the adjustable flatbed trolley to ensure a stable connection between the car and the gantry.

[0030] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gantry suitable for supporting large welded structural parts, characterized in that: include: A plurality of bases (1) and a height-adjustable flatbed vehicle (12) are provided, wherein adjacent sides of each two bases (1) are fixedly connected to a frame body (2), a plurality of steps (3) are fixedly connected to one side of each base (1) and the frame body (2), a top end of the frame body (2) is fixedly connected to a bearing block (4), adjacent sides of the two bearing blocks (4) are fixedly connected to a support frame (5), a top end of the support frame (5) is provided with a C-shaped groove (6), and a gravity sensor (7) is installed at the bottom end of the inner wall of the C-shaped groove (6); A mounting plate (8), the adjacent sides of the two support frames (5) are fixedly connected to the mounting plate (8), the adjacent sides of the two mounting plates (8) are fixedly connected to a connecting plate (9), both sides of the connecting plate (9) are fixedly connected to linear projection lamps (10), and the bottom end of the connecting plate (9) is fixedly connected to a central laser lamp (11); The elongated hole (13) is provided at the bottom end of the support frame (5), and the inner wall of the elongated hole (13) is slidably connected with a connecting block (14), and the bottom ends of the two connecting blocks (14) are fixedly connected with a limiting plate (15); A driving assembly is installed inside the support frame (5).

2. A portal frame suitable for supporting large welded structural members according to claim 1, characterized in that: The driving assembly includes two accommodating chambers (16), the two accommodating chambers (16) are respectively opened on both sides of the interior of the support frame (5), the inner walls of the accommodating chambers (16) are slidably connected to two sliding blocks (17), the inner wall end of one of the accommodating chambers (16) is fixedly connected to a guide rod (18), the inner wall of the end of the support frame (5) close to the two supporting blocks (4) is rotatably connected to a bidirectional threaded rod (19), and the front sides of the two front supporting blocks (4) are fixedly connected to a motor (20).

3. The portal frame suitable for supporting large welded structural members according to claim 1, characterized in that: The adjacent sides of the two limiting plates (15) are in contact with the top surface of the height-adjustable flatbed vehicle (12).

4. The portal frame suitable for supporting large welded structural members according to claim 1, characterized in that: The top end of the height-adjustable flatbed trolley (12) contacts the bottom end of the support frame (5).

5. The portal frame suitable for supporting large welded structural members according to claim 1, characterized in that: The driving end of the motor (20) is fixedly connected to one end of the bidirectional threaded rod (19), and the bottom end of the sliding block (17) is fixedly connected to the top end of the connecting block (14).

6. The portal frame suitable for supporting large welded structural members according to claim 2, characterized in that: The inner walls of the two sliding blocks (17) are slidably connected to the guide rod (18).

7. The portal frame suitable for supporting large welded structural members according to claim 2, characterized in that: The inner walls of the other two sliding blocks (17) are threadedly connected to the outer portion of the bidirectional threaded rod (19).

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