Simple detachable manhole protection device

Abstract

The utility model discloses a simple and easy detachable manhole protection device, it relates to the safety protection technical field of construction, including cross -shaped frame, Y type board, hinge and hinge fixing device, Y type board is evenly distributed on the round side of manhole, and the outer end of cross -shaped frame is fixed on Y type board, and cross -shaped frame is still connected with the hinge fixing device of setting in the lateral edge of manhole device through hinge. The utility model is simple in structure, and installation dismantles extremely convenient, need not tool, and foldable is convenient for transportation storage, and safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of building construction safety protection technology, specifically to a simple detachable manhole protection device. Background Technology

[0002] In construction, municipal engineering, and equipment maintenance, manholes are often left on the ground or platforms for pipeline installation, equipment hoisting, or personnel passage. During construction or when equipment is not installed, these open manholes pose a serious risk of falls to on-site workers and are a high-risk source of accidents. Therefore, effective and reliable protection measures must be implemented for these temporary manholes.

[0003] Currently, existing manhole protection methods mainly suffer from the following problems:

[0004] Traditional manhole cover protection typically involves directly covering the manhole with heavy steel or wooden plates. While simple, this method results in extremely heavy covers that require significant manpower for handling and installation, leading to inefficiency. Furthermore, the covers are not securely attached to the manhole edge, making them susceptible to movement or being blown open by the wind, posing safety hazards. Additionally, their fixed dimensions limit their versatility.

[0005] Bolted guardrails: Some guardrails use multiple rods connected by bolts to form a frame, which is then fixed around the manhole. While these devices offer good stability, their installation and disassembly are cumbersome, requiring tools such as wrenches and taking considerable time. During frequent use, small connecting parts such as bolts and nuts are easily lost or damaged, affecting efficiency and even posing safety risks due to loose connections.

[0006] Integrated support frames: These include welded cross-shaped or X-shaped support frames that are placed directly on the manhole. While simple in structure, these are typically non-foldable, bulky, and extremely inconvenient for transportation, storage, and relocation between different construction sites, increasing logistics costs and management complexity. Furthermore, their small contact area with the manhole edge means their stability relies primarily on their own weight, making them prone to displacement upon impact.

[0007] In summary, existing manhole protection devices generally suffer from problems such as inconvenient installation and disassembly, low transportation and storage efficiency, insufficient structural stability, and limited versatility, making it difficult to meet the urgent needs of modern construction for efficiency, safety, and convenience. Therefore, developing a new type of manhole protection device that integrates rapid assembly and disassembly, portable transportation, high stability, and good versatility is of significant practical importance. Utility Model Content

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a simple and detachable manhole protection device, which has a simple structure, is extremely convenient to install and disassemble, requires no tools, is foldable for easy transportation and storage, and is safe and reliable.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a simple detachable manhole protection device, including a cross-shaped frame, a Y-shaped plate, a hinge, and a hinge fixing device. The Y-shaped plate is evenly distributed on the circular edge of the manhole, and the outer end of the cross-shaped frame is fixed on the Y-shaped plate. The cross-shaped frame is also connected to the hinge fixing device provided on the side of the manhole device through a hinge.

[0010] Preferably, the cross-shaped frame is formed by two support rods of equal length intersecting perpendicularly at the center point, serving as the core load-bearing and blocking structure for protection.

[0011] Preferably, the Y-shaped plate is provided with a Y-shaped groove to receive the end of the cross-shaped frame, and two supports that contact the edge of the manhole. In use, the four Y-shaped plates are respectively positioned in four directions of the manhole, and the supports are fixed to the edge of the manhole.

[0012] Preferably, the hinge is located at the center of the intersection of the two support rods of the cross-shaped frame, so that the cross-shaped frame can be folded along the center point to achieve the folding function.

[0013] Preferably, the hinge fixing device cooperates with the hinge to lock the relative angle of the two support rods when the cross-shaped frame is unfolded to the working state, so as to prevent them from folding accidentally.

[0014] Preferably, the end shape of the cross-shaped frame matches the Y-shaped groove shape of the Y-shaped plate.

[0015] Preferably, the support of the Y-shaped plate is provided with an anti-slip pad at the interface with the manhole to increase the friction between the Y-shaped plate and the edge of the manhole, prevent the device from sliding, and protect the edge of the manhole from wear.

[0016] Preferably, the hinge fixing device is one of a spring-loaded locking pin mechanism, a rotary buckle mechanism, or a quick-release bolt mechanism.

[0017] The beneficial effects of this utility model are:

[0018] 1. This device requires absolutely no tools. Installation is simple: just place the four Y-shaped plates, unfold and lock the cross-shaped frame, and then insert the ends of the cross-shaped frame into the Y-shaped grooves. The entire process can be completed in tens of seconds. Disassembly is equally simple and quick, greatly improving construction efficiency.

[0019] 2. By incorporating hinges, the cross-shaped frame can be folded into a compact elongated shape, significantly reducing its size. The entire device can be easily disassembled into five parts (1 cross-shaped frame and 4 Y-shaped plates), facilitating handling, stacking, and efficient transfer between different construction sites, thereby significantly reducing logistics and management costs.

[0020] 3. The Y-shaped plate's straddle design provides a stable support foundation; the cross-shaped frame structure can effectively withstand and disperse external impact forces; the hinge fixing device fundamentally eliminates structural failure caused by accidental folding during use, and multiple safeguards ensure the safety of the device.

[0021] 4. By adjusting the size of the Y-shaped plate or the opening angle of its support, this device can be flexibly adapted to manholes of different diameters and edge shapes, making it widely applicable and highly practical.

[0022] 5. The entire device has few structural components, is easy to process and manufacture, has low production costs, low failure rate, is sturdy and durable, and has good economic benefits. Attached Figure Description

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a top view of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the Y-shaped plate of this utility model;

[0027] Figure 4 for Figure 3 Top view. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] Reference Figure 1-4 The specific embodiment adopts the following technical solution: a simple detachable manhole protection device, including a cross-shaped frame 1, a Y-shaped plate 2, a hinge 3 and a hinge fixing device 4. The Y-shaped plate 2 is evenly distributed on the circular side of the manhole. The outer end of the cross-shaped frame 1 is fixed on the Y-shaped plate 2. The cross-shaped frame 1 is also connected to the hinge fixing device 4 set on the side of the manhole device through the hinge 3.

[0030] It is worth noting that the cross-shaped frame 1 is composed of two support rods of equal length that intersect perpendicularly at the center point, serving as the core load-bearing and blocking structure for protection.

[0031] It is worth noting that the Y-shaped plate 2 is provided with a Y-shaped groove 21 to receive the end of the cross-shaped frame, and two supports 22 that contact the edge of the manhole. During use, the four Y-shaped plates are respectively positioned in four directions of the manhole, and the supports 22 are fixed to the edge of the manhole.

[0032] It is worth noting that the hinge 3 is located at the intersection of the two support rods of the cross-shaped frame, enabling the cross-shaped frame to be folded along the center point to achieve the folding function.

[0033] It is worth noting that the hinge fixing device cooperates with the hinge to lock the relative angle of the two support rods when the cross-shaped frame is unfolded to the working state, so as to prevent it from folding accidentally.

[0034] It is worth noting that the end shape of the cross-shaped frame matches the Y-shaped groove shape of the Y-shaped plate, and can be flat, wedge-shaped, or equipped with a positioning pin to ensure a stable connection after embedding and to prevent slippage.

[0035] It is worth noting that the support body 22 of the Y-shaped plate 2 is provided with an anti-slip pad at the interface with the manhole, which is used to increase the friction between the Y-shaped plate and the edge of the manhole, prevent the device from sliding, and protect the edge of the manhole from wear.

[0036] Furthermore, the hinge fixing device 4 is one of a spring-loaded locking pin mechanism, a rotary latch mechanism, or a quick-release bolt mechanism. Preferably, it is a spring-loaded locking pin mechanism, which requires only a single pressing action to lock or unlock, making it the most convenient to operate.

[0037] The installation method for this specific implementation is as follows:

[0038] 1. The workers first place the four Y-shaped plates 2 in the four directions of the manhole 5, so that the support body 22 is firmly straddling the edge of the manhole.

[0039] 2. Unfold: Take out the folded cross-shaped frame 1 and unfold it. At this time, the locking pin of the hinge fixing device 4 will automatically lock, and the cross-shaped frame 1 will form a stable cross-shaped structure.

[0040] 3. Fixing: Align the four ends of the unfolded cross-shaped frame 1 with the Y-shaped grooves 21 of the four Y-shaped plates 2 respectively. At this point, the entire protective device is installed, forming a stable and safe protective barrier that effectively prevents people from falling.

[0041] 4. The disassembly process is the reverse of the installation process: First, lift the cross-shaped frame 1 to detach it from the Y-shaped plate 2, then unlock the hinge fixing device 4, fold the cross-shaped frame 1 in half for storage, and finally fold up the four Y-shaped plates 2. All parts can be easily moved.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A simple, detachable manhole cover, characterized in that, It includes a cross-shaped frame (1), a Y-shaped plate (2), a hinge (3) and a hinge fixing device (4). The Y-shaped plate (2) is evenly distributed on the circular side of the manhole. The outer end of the cross-shaped frame (1) is fixed on the Y-shaped plate (2). The cross-shaped frame (1) is also connected to the hinge fixing device (4) set on the side of the manhole device through the hinge (3).

2. The simple detachable manhole protection device according to claim 1, characterized in that, The cross-shaped frame (1) is formed by two support rods of equal length intersecting perpendicularly at the center point, serving as the core load-bearing and blocking structure for protection.

3. A simple detachable manhole protection device according to claim 1, characterized in that, The Y-shaped plate (2) is provided with a Y-shaped groove (21) for receiving the end of the cross-shaped frame, and two supports (22) that contact the edge of the manhole. The four Y-shaped plates are respectively set in the four directions of the manhole during use, and the supports (22) are fixed to the edge of the manhole.

4. A simple detachable manhole protection device according to claim 1, characterized in that, The hinge (3) is located at the intersection of the two support rods of the cross-shaped frame, so that the cross-shaped frame can be folded along the center point to achieve the folding function.

5. A simple detachable manhole protection device according to claim 1, characterized in that, The hinge fixing device (4) cooperates with the hinge (3).

6. A simple detachable manhole protection device according to claim 1, characterized in that, The end shape of the cross-shaped frame (1) matches the Y-shaped groove shape of the Y-shaped plate.

7. A simple detachable manhole protection device according to claim 1, characterized in that, The support (22) of the Y-shaped plate (2) is provided with an anti-slip pad at the junction with the manhole.

8. A simple detachable manhole protection device according to claim 1, characterized in that, The hinge fixing device (4) is one of a spring-loaded locking pin mechanism, a rotating buckle mechanism, or a quick-release bolt mechanism.

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