Lightweight invisible well lid

Abstract

The utility model discloses a light-weight invisible well lid, which relates to the technical field of invisible well lids and comprises an outer frame and an inner frame, the outer wall of the inner frame is attached to the inner wall of the outer frame and the inner frame is in sliding connection with the outer frame, and a boss used for limiting the inner frame is arranged on the lower portion of the inner wall of the outer frame in the circumferential direction. A reinforcing plate array formed by crossing a plurality of reinforcing plates, a transverse partition plate, a concrete layer and a pavement panel layer are sequentially arranged in the inner frame from bottom to top, the reinforcing plate array is welded to the inner wall of the inner frame, the transverse partition plate abuts against the top end of the reinforcing plate array, and the outer wall of the transverse partition plate is welded to the inner wall of the inner frame. According to the hidden manhole cover inner frame, the reinforcing plate array pairs sequentially form upward uniform support for the transverse partition plates, the concrete layer and the pavement panel layer, so that the overall structural strength of the inner frame is kept, the weight of the inner frame is reduced, and the hidden manhole cover is convenient to move or lift during maintenance or replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of invisible manhole covers, in particular to a lightweight invisible manhole cover. Background Art

[0002] Invisible manhole covers are well-known for their beauty and concealment, and are widely used in public areas such as urban streets and garden landscapes. However, as the use time increases, some invisible manhole covers have problems such as aging and damage, which poses a safety hazard to pedestrians and vehicles. At this time, the invisible manhole covers need to be repaired or replaced. However, the existing invisible manhole covers are filled with concrete and mortar, and a paving layer is laid on the top, resulting in the weight of the invisible manhole covers being around 50KG. When repairing or replacing, it is difficult to move or lift them, and additional manpower or machinery is required. Utility Model Content

[0003] The purpose of the utility model is to provide a lightweight invisible manhole cover to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a lightweight invisible manhole cover, comprising an outer frame and an inner frame whose outer wall is fitted and slidably connected to the inner wall of the outer frame, the lower part of the inner wall of the outer frame is circumferentially provided with a boss for limiting the inner frame, the inner frame is provided with a reinforcing plate array composed of a plurality of reinforcing plates crossed, a transverse partition, a concrete layer and a paving panel layer from bottom to top, the reinforcing plate array is welded to the inner wall of the inner frame, the transverse partition is abutted against the top end of the reinforcing plate array, and the outer wall of the transverse partition is welded to the inner wall of the inner frame, and the concrete layer and the paving panel layer are both filling layers.

[0005] Furthermore, the outer frame is a hollow structure, and an array of reinforcing ribs is evenly arranged inside the outer frame.

[0006] Furthermore, four corners of the top end of the inner wall of the inner frame are welded with triangular plates, and the triangular plates are provided with hanging holes.

[0007] Furthermore, the reinforcement plate array below the transverse partition is filled with foam glue.

[0008] Furthermore, a plurality of through grooves are evenly arranged on the upper and lower parts of the inner wall of the reinforcing plate array.

[0009] Furthermore, the cross section of the through groove is arc-shaped.

[0010] The beneficial effects achieved by the utility model are:

[0011] 1. The reinforcing plate array forms uniform upward support for the transverse partition, concrete layer and paving panel layer in turn, thereby reducing the weight of the inner frame while maintaining the overall structural strength of the inner frame, thereby facilitating the movement or lifting of the invisible manhole cover during maintenance or replacement.

[0012] 2. By setting the outer frame to be hollow and providing a reinforcing rib array inside the outer frame, the outer frame can reduce weight while maintaining the original structural strength.

[0013] 3. The solidified foam has good elasticity and flexibility, which can adapt to the deformation of the top of the inner frame caused by external pressure and improve the overall stability of the inner frame.

[0014] 4. Multiple through grooves are evenly arranged on the upper and lower parts of the inner wall of the reinforcing plate array, which reduces the weight of the reinforcing plate array and solves the problem of separation of the foam glue by the reinforcing plate array, thereby improving the overall stability of the foam glue in the inner frame.

[0015] 5. The arc-shaped setting of the through groove can enhance the stability of the structure and improve the overall bearing capacity and durability by dispersing the pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a lightweight invisible manhole cover in an embodiment;

[0017] Figure 2 A schematic diagram of the structure decomposition of a lightweight invisible manhole cover in an embodiment;

[0018] Figure 3 is a cross-sectional view of a lightweight invisible manhole cover in the embodiment in a front view state;

[0019] Figure 4 It is a cross-sectional view of the outer frame in the embodiment when viewed from above. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-3 As shown, the utility model discloses a lightweight invisible manhole cover, comprising: an outer frame 1 and an inner frame 2 whose outer wall is fitted and slidably connected to the inner wall of the outer frame 1, a boss 11 for limiting the inner frame 2 is circumferentially arranged at the lower part of the inner wall of the outer frame 1, and a reinforcing plate array composed of a plurality of reinforcing plates 21 crossed therein, a transverse partition 22, a concrete layer 23 and a paving panel layer 24 are sequentially arranged from bottom to top in the inner frame 2, the reinforcing plate array is welded to the inner wall of the inner frame 2, the transverse partition 22 is abutted against the top end of the reinforcing plate array, and the outer wall of the transverse partition 22 is welded to the inner wall of the inner frame 2, and the concrete layer 23 and the paving panel layer 24 are both filling layers.

[0022] Based on the above structure, Figure 1-3 As shown, when in use, the reinforcing plate array forms uniform upward support for the transverse partition 22, the concrete layer 23 and the paving panel layer 24 in turn, thereby reducing the weight of the inner frame 2 while maintaining the overall structural strength of the inner frame 2, thereby facilitating the movement or lifting of the invisible manhole cover during maintenance or replacement.

[0023] Further, such as Figure 4 As shown, the outer frame 1 is a hollow structure, and a reinforcement rib array 12 is evenly arranged inside the outer frame 1. Through the arrangement of the reinforcement rib array 12, the outer frame 1 can reduce the weight while maintaining the original structural strength.

[0024] Further, such as Figure 1-2 As shown, in order to facilitate the moving or lifting of the inner frame, triangular plates 25 are welded at the four corners of the top of the inner wall of the inner frame 2, and a lifting hole 251 is opened on the triangular plate 25. When moving or lifting, an external tool is inserted into the lifting hole 251, and then the triangular plate 25 and the inner frame 2 are moved or lifted by pulling the external tool.

[0025] Furthermore, the reinforcing plate array below the transverse partition 22 is filled with foamed glue. The solidified foamed glue has good elasticity and flexibility, which can adapt to the deformation of the top of the inner frame 2 caused by external pressure, thereby improving the overall stability of the inner frame 2.

[0026] Further, such as Figure 2-3 As shown, a plurality of through grooves 211 are evenly arranged on the upper and lower parts of the inner wall of the reinforcing plate array. The arrangement of the through grooves 211 reduces the weight of the reinforcing plate array and solves the problem of separation of the foam glue by the reinforcing plate array, thereby improving the overall stability of the foam glue in the inner frame 2.

[0027] Further, such as Figure 2-3 As shown, the cross section of the through groove 211 is in an arc shape. The arc-shaped arrangement of the through groove 211 can enhance the stability of the structure and improve the overall bearing capacity and durability by dispersing the pressure.

[0028] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A lightweight invisible manhole cover, comprising an outer frame (1) and an inner frame (2) whose outer wall is fitted and slidably connected to the inner wall of the outer frame (1), wherein a boss (11) is provided along the circumferential direction at the lower part of the inner wall of the outer frame (1) for limiting the position of the inner frame (2), characterized in that: The inner frame (2) is provided with a reinforcing plate array composed of a plurality of reinforcing plates (21) intersecting each other, a transverse partition (22), a concrete layer (23) and a paving panel layer (24) in sequence from bottom to top; the reinforcing plate array is welded to the inner wall of the inner frame (2); the transverse partition (22) is in contact with the top end of the reinforcing plate array; and the outer wall of the transverse partition (22) is welded to the inner wall of the inner frame (2); the concrete layer (23) and the paving panel layer (24) are both filling layers.

2. A lightweight invisible manhole cover according to claim 1, characterized in that: The outer frame (1) is a hollow structure, and a reinforcement rib array (12) is evenly arranged inside the outer frame (1).

3. The lightweight invisible manhole cover according to claim 1 is characterized in that: The four corners of the top end of the inner wall of the inner frame (2) are welded with triangular plates (25), and the triangular plates (25) are provided with hanging holes (251).

4. A lightweight invisible manhole cover according to any one of claims 1 to 3, characterized in that: The reinforcement plate array below the transverse partition plate (22) is filled with foamed glue.

5. The lightweight invisible manhole cover according to claim 4 is characterized in that: A plurality of through grooves (211) are evenly arranged at the upper and lower parts of the inner wall of the reinforcing plate array.

6. The lightweight invisible manhole cover according to claim 5 is characterized by: The cross section of the through groove (211) is in the shape of an arc.

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