Corrosion-resistant lightweight steel grating
The design of L-shaped connecting rods and magnetic adsorption solves the problem of misaligned steel grating splicing, achieving stable connection and corrosion resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI HUALIAN STEEL STRUCTURE CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-15
AI Technical Summary
Existing steel gratings often have difficulty aligning when spliced together, resulting in misaligned splices.
The design employs L-shaped connecting rods and connecting slots, combined with magnetic adsorption and bolt fixing, to achieve stable connection and alignment of the frame.
This achieves stable alignment and connection of steel gratings, avoids misalignment during splicing, and enhances the reliability and corrosion resistance of the connection.
Smart Images

Figure CN224244071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel grating technology, specifically to a corrosion-resistant and lightweight steel grating. Background Technology
[0002] Steel grating, also known as steel grid, is a steel product made by arranging flat steel bars at certain intervals and crossbars and welding them together to form square grids in the middle. It is mainly used as drainage ditch covers, steel structure platform panels, and steel stair treads. The crossbars are generally made of twisted square steel.
[0003] Existing steel gratings often have difficulty aligning when spliced together, resulting in misaligned splices. Therefore, they do not meet the current requirements. To address this, we have proposed a corrosion-resistant and lightweight steel grating. Utility Model Content
[0004] The purpose of this utility model is to provide a corrosion-resistant and lightweight steel grating to solve the problems mentioned in the background art, such as the difficulty in aligning steel gratings when splicing them together, which often leads to skewed splicing.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant lightweight steel grating, comprising an outer frame, with connecting grooves at two symmetrical end corners of the outer frame and L-shaped slots at the other two end corners of the outer frame, each L-shaped slot having a rotating shaft rotatably mounted inside, each rotating shaft having an L-shaped connecting rod fixedly mounted on its outer surface, each L-shaped connecting rod having two first magnets on its surface, and each L-shaped slot having a second magnet on its inner surface, the first magnets and the second magnets being in contact with each other.
[0006] Preferably, a plurality of horizontal partitions are fixedly installed on the inner side of the outer frame, and a plurality of vertical threaded rods are fixedly installed on the inner side of the outer frame. The horizontal partitions and vertical threaded rods are arranged alternately, and the vertical threaded rods all penetrate the surface of the horizontal partitions.
[0007] Preferably, the L-shaped connecting rod has limiting holes on both ends, and the outer frame has insertion holes near the connecting groove. The insertion holes and limiting holes are interconnected and connected by bolts.
[0008] Preferably, the surfaces of the outer frame and the L-shaped connecting rod are coated with epoxy paint.
[0009] Compared with the prior art, the beneficial effects of this utility model are:
[0010] 1. This utility model, through the cooperation of the L-shaped connecting rod and the connecting groove, allows the device to connect the two outer frames by inserting the L-shaped connecting rod into the connecting groove during use, thereby facilitating the connection and assembly of multiple outer frames. Furthermore, when connecting the outer frames, the direction of the L-shaped connecting rod can be adjusted by rotating the L-shaped connecting rod in the L-shaped slot, thereby changing the position of the protruding outer end of the L-shaped connecting rod to adapt to different connection and assembly situations.
[0011] 2. This utility model, through the cooperation of the first magnet and the second magnet, enables the L-shaped connecting rod to remain vertical when the device rotates, by being attracted by the first magnet and the second magnet, thus avoiding the situation where the L-shaped connecting rod is skewed and the two outer frames cannot be aligned and connected. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a top cross-sectional view of the entire utility model;
[0014] Figure 3 This utility model Figure 2 A partial structural diagram of part A in the middle.
[0015] In the diagram: 1. Outer frame; 2. Horizontal partition; 3. Vertical threaded rod; 4. Connecting groove; 5. Insertion hole; 6. L-shaped slot; 7. L-shaped connecting rod; 8. Limiting hole; 9. Rotating shaft; 10. First magnet; 11. Second magnet. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0017] Please see Figures 1 to 3 An embodiment of this utility model is provided: a corrosion-resistant lightweight steel grating, including an outer frame 1. A connecting groove 4 is provided at each of the two symmetrical end corners of the outer frame 1, and an L-shaped slot 6 is provided at the other two end corners of the outer frame 1. A rotating shaft 9 is rotatably installed inside the L-shaped slot 6. An L-shaped connecting rod 7 is fixedly installed on the outer surface of the rotating shaft 9. Two first magnets 10 are provided on the surface of the L-shaped connecting rod 7, and a second magnet 11 is provided on the inner surface of the L-shaped slot 6. The first magnets 10 and the second magnets 11 are in contact with each other.
[0018] By using the L-shaped connecting rod 7 and the connecting groove 4, the device can be used to connect the two outer frames 1 by inserting the L-shaped connecting rod 7 into the connecting groove 4, thus facilitating the connection and assembly of multiple outer frames 1. When connecting the outer frames 1, the direction of the L-shaped connecting rod 7 can be adjusted by rotating it in the L-shaped slot 6, thereby changing the position of the protruding outer end of the L-shaped connecting rod 7 to adapt to different connection and assembly situations.
[0019] By cooperating with the first magnet 10 and the second magnet 11, when the device rotates the L-shaped connecting rod 7, the L-shaped connecting rod 7 can be attracted by the first magnet 10 and the second magnet 11, so that the L-shaped connecting rod 7 remains vertical, avoiding the situation where the L-shaped connecting rod 7 is tilted and the two outer frames 1 cannot be aligned and connected.
[0020] Multiple horizontal partitions 2 are fixedly installed on the inner side of the outer frame 1, and multiple vertical threaded rods 3 are fixedly installed on the inner side of the outer frame 1. The horizontal partitions 2 and the vertical threaded rods 3 are arranged alternately, and the vertical threaded rods 3 all penetrate the surface of the horizontal partitions 2.
[0021] Both ends of the L-shaped connecting rod 7 are provided with limiting holes 8, and the outer frame 1 is provided with insertion holes 5 near the connecting groove 4. The insertion holes 5 and the limiting holes 8 are interconnected and connected by bolts.
[0022] By using the limiting hole 8 and the insertion hole 5, after the device connects multiple outer frames 1, the L-shaped connecting rod 7 can be fixed to the outer frame 1 by inserting bolts into the insertion hole 5. This prevents the L-shaped connecting rod 7 from shaking and turning out of the connecting groove 4 during use, which would cause the outer frames 1 to separate.
[0023] The surfaces of the outer frame 1 and the L-shaped connecting rod 7 are both coated with epoxy paint.
[0024] By spraying epoxy coating on the surfaces of the outer frame 1 and L-shaped connecting rod 7, the surfaces of the outer frame 1 and L-shaped connecting rod 7 are isolated from the outside world by the epoxy coating, thereby resisting the corrosion of the outer frame 1 and L-shaped connecting rod 7 by factors such as domestic sewage and rainwater.
[0025] When using this corrosion-resistant lightweight steel grating, the two outer frames 1 can be connected by inserting the L-shaped connecting rod 7 into the connecting groove 4, thus facilitating the connection and assembly of multiple outer frames 1. Furthermore, when connecting the outer frames 1, the direction of the L-shaped connecting rod 7 can be adjusted by rotating it in the L-shaped slot 6, changing the position of its protruding outer end to accommodate different connection and assembly situations.
[0026] When the L-shaped connecting rod 7 is rotated, it can be attracted by the first magnet 10 and the second magnet 11, keeping the L-shaped connecting rod 7 vertical and preventing it from tilting and thus failing to align and connect the two outer frames 1.
[0027] After connecting multiple outer frames 1, bolts can be inserted into the insertion hole 5 to fix the L-shaped connecting rod 7 to the outer frame 1, thereby preventing the L-shaped connecting rod 7 from shaking and turning out of the connecting groove 4 during use, which would cause the outer frames 1 to separate.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A corrosion-resistant lightweight steel grating, comprising an outer frame (1), characterized in that: The outer frame (1) is provided with connecting grooves (4) at two symmetrical corners, and with L-shaped slots (6) at the other two corners. A rotating shaft (9) is rotatably installed inside the L-shaped slot (6). An L-shaped connecting rod (7) is fixedly installed on the outer surface of the rotating shaft (9). Two first magnets (10) are provided on the surface of the L-shaped connecting rod (7). A second magnet (11) is provided on the inner surface of the L-shaped slot (6). The first magnet (10) and the second magnet (11) are in contact with each other.
2. The corrosion-resistant lightweight steel grating according to claim 1, characterized in that: Multiple horizontal partitions (2) are fixedly installed on the inner side of the outer frame (1), and multiple vertical threaded rods (3) are fixedly installed on the inner side of the outer frame (1). The horizontal partitions (2) and vertical threaded rods (3) are arranged alternately, and the vertical threaded rods (3) all penetrate the surface of the horizontal partitions (2).
3. The corrosion-resistant lightweight steel grating according to claim 1, characterized in that: The L-shaped connecting rod (7) has limiting holes (8) on both ends of its surface. The outer frame (1) has insertion holes (5) near the connecting groove (4) on its surface. The insertion holes (5) and the limiting holes (8) are interconnected and connected by bolts.
4. The corrosion-resistant lightweight steel grating according to claim 1, characterized in that: The surfaces of the outer frame (1) and the L-shaped connecting rod (7) are both coated with epoxy paint.