A flip cover assembled overhead ground access hole system
The flip-top design, which combines a four-bar linkage structure with a hydraulic telescopic support rod, solves the problem of complicated construction of prefabricated elevated ground access panel systems, achieving efficient and convenient access panel installation and reducing construction difficulty and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING NAT STANDARD CONSTR TECH CO LTD
- Filing Date
- 2025-01-24
- Publication Date
- 2026-05-29
AI Technical Summary
Existing prefabricated elevated ground systems are cumbersome to inspect and maintain, making it difficult to meet the requirements of efficiency, convenience, and reliability.
The flip-top design combines a four-bar linkage structure with a hydraulic telescopic support rod. The pressure plate is rotatably connected to the load-bearing keel through two connecting rods and is equipped with leveling anchor bolts to enable the pressure plate to be flipped open and kept horizontal. Combined with suction cup or handle opening method, the installation process is simplified.
It improves the load-bearing capacity of the access panel system, simplifies the installation process, reduces construction difficulty and cost, achieves modular design, and is labor-saving and stable in use.
Smart Images

Figure CN224300353U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of decoration, and specifically relates to a flip-top assembled elevated ground inspection port system. Background Technology
[0002] Prefabricated raised floors are integrated floors primarily constructed using dry construction methods, manufactured in factories and assembled on-site. They offer good anti-static and fire-resistant properties. Refer to patent CN222207081U, which discloses a raised floor structure consisting of components such as anchor bolts and bearing plates.
[0003] However, the pipelines installed in the elevated ground require dismantling for inspection and maintenance, which is cumbersome and leads to difficulties and inconvenience in maintenance, making it difficult to meet the requirements of modern prefabricated buildings for efficiency, convenience and reliability. Utility Model Content
[0004] This utility model provides a flip-top assembled elevated ground maintenance access system to solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a flip-top assembled elevated ground inspection port system, including leveling anchor bolts, a load-bearing keel, and a pressure plate. The load-bearing keel consists of four steel pipes joined together to form a rectangular ring with a cavity in the middle. Four leveling anchor bolts are provided and located at the four corners of the load-bearing keel. The pressure plate is installed on the top of the load-bearing keel. Two connecting rods are rotatably connected to both sides of one end of the bottom surface of the pressure plate, and the load-bearing keel, the two connecting rods, and the pressure plate form a four-bar linkage structure that allows the pressure plate to flip. A hydraulic telescopic support rod is rotatably connected to the end of the load-bearing keel away from the connecting rods, and the other end of the hydraulic telescopic support rod is rotatably connected to the middle of the pressure plate.
[0006] By adopting the above technical solution, this mechanism utilizes the principle of a four-bar linkage, with two connecting rods on each side to rotatably connect the pressure plate and the load-bearing keel. This allows the pressure plate to flip as the two connecting rods rotate, thus enabling the pressure plate to open. This four-bar flip-open structure has a stronger load-bearing capacity than a hinged structure, thus providing better performance in elevated ground access systems. Furthermore, it incorporates a hydraulic telescopic support rod, which is currently widely used in automotive hoods and trunks, luggage compartments, tables, and chairs. After opening a certain distance, it can automatically open or close the remaining portion, making the process very labor-saving. The pressure plate can be opened using a suction cup or a handle mounted on the top of the pressure plate. The bottom of the load-bearing keel is also equipped with leveling bolts, ensuring that the access panel remains level with the surrounding ground, preventing shaking or tilting. Therefore, the overall design constitutes a modular system, making installation convenient and simple, simplifying the installation process of the access panel, and reducing construction difficulty and costs.
[0007] Preferably, the bottom end of the pressure plate is provided with a protruding layer located inside the bearing keel.
[0008] By adopting the above technical solution, the pressure plate has good structural strength and load-bearing capacity, and it fits tightly with the load-bearing keel structure.
[0009] Preferably, there is a gap between the protruding layer and the supporting keel.
[0010] By adopting the above technical solution, the influence of the pressure plate rotating through the four-linkage mechanism is avoided.
[0011] Preferably, a bearing plate is provided at the corner of the bearing keel away from the connecting rod, and the bearing plate is matched with the protruding layer.
[0012] By adopting the above technical solutions, the load-bearing capacity of the load-bearing keel on the pressure plate can be improved.
[0013] Preferably, a rectangular mounting tube is fixed to the bottom end of the pressure plate, an L-shaped plate is fixed to one end of the rectangular mounting tube, and two rods are rotatably connected to the two sides of the L-shaped plate.
[0014] By adopting the above technical solution, the installation of the two connecting rods is convenient and the structural layout is reasonable.
[0015] Preferably, a buffer rubber pad is fixed at the part where the pressure plate mates with the load-bearing keel.
[0016] By adopting the above technical solutions, expansion noise can be reduced, and green construction can be achieved.
[0017] The beneficial effects of this utility model are as follows: This mechanism utilizes the principle of a four-bar linkage, with two connecting rods on each side to rotatably connect the pressure plate and the load-bearing keel. This allows the pressure plate to flip as the two connecting rods rotate, thus enabling the pressure plate to open. Compared to hinge-type opening structures, this four-bar opening structure has a stronger load-bearing capacity, resulting in better performance in elevated ground access systems. Furthermore, it incorporates a hydraulic telescopic support rod, which is widely used in automotive hoods and trunks, luggage compartments, tables, and chairs. After opening a certain distance, it can automatically open or close the remaining portion, making the process very labor-saving. The pressure plate can be opened using a suction cup or a handle mounted on the top of the pressure plate. The bottom of the load-bearing keel is also equipped with leveling bolts, ensuring that the access panel remains level with the surrounding ground, preventing shaking or tilting. Therefore, the overall design is modular, making installation convenient and simple, simplifying the installation process of the access panel, and reducing construction difficulty and costs.
[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of this invention may be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the open structure of an embodiment of this utility model;
[0020] Figure 2 This is a structural side view of an embodiment of the present utility model;
[0021] Figure 3 This is a bottom view of the closed structure according to an embodiment of the present invention.
[0022] Attached reference numerals: 1. Leveling anchor bolt; 2. Bearing keel; 3. Bearing plate; 4. Connecting rod; 5. Hydraulic telescopic support rod; 6. Protruding layer; 7. Bearing plate; 8. Rectangular mounting tube; 9. L-shaped plate. Detailed Implementation
[0023] The technical solution of this utility model will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.
[0024] Combination Figure 1-3A flip-top prefabricated elevated ground access system includes leveling anchor bolts 1, a load-bearing keel 2, and a pressure plate 3. The load-bearing keel 2 consists of four steel pipes joined together to form a rectangular ring with a cavity in the middle. Four leveling anchor bolts 1 are provided and located at the four corners of the load-bearing keel 2. The pressure plate 3 is installed on the top of the load-bearing keel 2. Two connecting rods 4 are rotatably connected to both sides of one end of the bottom surface of the pressure plate 3. The load-bearing keel 2, the two connecting rods 4, and the pressure plate 3 form a four-link structure that allows the pressure plate 3 to flip. A hydraulic telescopic support rod 5 is rotatably connected to the end of the load-bearing keel 2 away from the connecting rods 4. The other end of the hydraulic telescopic support rod 5 is rotatably connected to the middle of the pressure plate 3.
[0025] This mechanism utilizes the principle of a four-bar linkage (4), with two linkages (4) on each side rotatably connecting the pressure plate (3) and the load-bearing keel (2). This allows the pressure plate (3) to flip as the two linkages (4) rotate, thus enabling it to open. This four-bar linkage opening structure has a stronger load-bearing capacity than hinged opening structures, resulting in better performance in elevated ground access systems. It also incorporates a hydraulic telescopic support rod (5), which is widely used in automotive hoods and trunks, luggage compartments, tables, and chairs. After opening a certain distance, it automatically opens or closes the remaining portion, making the process very labor-saving. The pressure plate (3) can be opened using a suction cup or a handle mounted on its top. The bottom of the load-bearing keel is equipped with leveling bolts (1) to ensure the access panel remains level with the surrounding ground, preventing wobbling or tilting. Therefore, the overall design is modular, making installation convenient and simple, simplifying the access panel installation process, and reducing construction difficulty and cost.
[0026] The bottom end of the pressure plate 3 is provided with a protruding layer 6 located inside the bearing keel 2. The pressure plate 3 has good structural strength and can have good load-bearing capacity, and it fits tightly with the bearing keel 2 structure.
[0027] There is a gap between the protruding layer 6 and the supporting keel 2, which avoids affecting the rotation of the pressure plate 3 through the four-link 4.
[0028] A bearing plate 7 is provided at the corner of the bearing keel 2 away from the connecting rod 4. The bearing plate 7 is matched with the protruding layer 6, which can improve the bearing capacity of the bearing keel 2 on the bearing plate 3.
[0029] A rectangular mounting tube 8 is fixed to the bottom of the pressure plate 3. An L-shaped plate 9 is fixed to one end of the rectangular mounting tube 8. Two rods are rotatably connected to the two sides of the L-shaped plate 9. The two connecting rods 4 are easy to install and have a reasonable structural layout.
[0030] The application of a leveling mechanism ensures that the access panel remains level with the surrounding ground, preventing wobbling or tilting. This allows for modular installation that guarantees both load-bearing capacity and ease of maintenance, while also providing quick and convenient installation. Anchor bolts are secured to the floor slab using conventional methods such as adhesive bonding.
[0031] The pressure plate 3 and the load-bearing keel 2 are fitted with a buffer rubber pad, which can reduce expansion noise and promote green construction.
[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A flip-top prefabricated elevated ground access panel system, characterized in that: The system includes leveling anchor bolts (1), a bearing keel (2), and a pressure plate (3). The bearing keel (2) consists of four steel pipes connected at their ends to form a rectangular ring with a cavity in the middle. There are four leveling anchor bolts (1) located at the four corners of the bearing keel (2). The pressure plate (3) is installed on the top of the bearing keel (2). Two connecting rods (4) are rotatably connected to both sides of one end of the bottom surface of the pressure plate (3). The bearing keel (2), the two connecting rods (4), and the pressure plate (3) form a four-link (4) structure, which allows the pressure plate (3) to be flipped. A hydraulic telescopic support rod (5) is rotatably connected to the end of the bearing keel (2) away from the connecting rod (4). The other end of the hydraulic telescopic support rod (5) is rotatably connected to the middle of the pressure plate (3).
2. The flip-top assembled overhead ground maintenance access system according to claim 1, characterized in that: The bottom end of the pressure plate (3) is provided with a protruding layer (6) located inside the bearing keel (2).
3. The flip-top assembled elevated ground maintenance access system according to claim 2, characterized in that: There is a gap between the protruding layer (6) and the supporting keel (2).
4. The flip-top assembled elevated ground maintenance access system according to claim 3, characterized in that: The supporting keel (2) is provided with a supporting plate (7) at one corner away from the connecting rod (4), and the supporting plate (7) is matched with the protruding layer (6).
5. A flip-top prefabricated elevated ground access system according to claim 4, characterized in that: The bottom end of the pressure plate (3) is fixed with a rectangular mounting tube (8), and one end of the rectangular mounting tube (8) is fixed with an L-shaped plate (9). Two rods are respectively rotatably connected to the two sides of the L-shaped plate (9).
6. A flip-top prefabricated elevated ground access system according to claim 5, characterized in that: The pressure plate (3) is fixed with a buffer rubber pad at the part where it mates with the load-bearing keel (2).