A preformed inspection well's ladder installation reservation structure

Abstract

The utility model discloses a kind of ladder installation reservation structure of prefabricated inspection well, including the pre-embedded cavity of two ends opening, pre-embedded cavity is installed in the well wall of prefabricated inspection well and one end opening flush with well wall inner side, the top of the bottom surface of pre-embedded cavity is spaced apart and provided with multiple horizontal limit plates, and the outer end of horizontal limit plate is fixed on the side wall of pre-embedded cavity.The ladder installation reservation structure of prefabricated inspection well of the utility model, by custom pre-embedded cavity, horizontal limit plate and vertical limit plate, provide special installation space and positioning guarantee for ladder, ladder positioning is accurate, support ladder in factory standardization installation, save later-stage drilling, reinforcing bar process, avoid to destroy well wall integrity, pre-embedded cavity uses modular design, installation operation is convenient and efficient, to build structure overall strength, construction efficiency is high, the ladder system of excellent safety.

Description

Technical Field

[0001] This utility model relates to a pre-fabricated ladder installation structure for a prefabricated inspection well. Background Technology

[0002] Currently, the installation method for ladders in prefabricated inspection wells in municipal engineering projects is usually to fix each ladder to the well wall individually by drilling holes and installing rebar on-site after the prefabricated inspection well is installed. Although this process is mature, it suffers from low construction efficiency, high labor intensity, and long installation cycle. Furthermore, manual positioning is prone to errors, resulting in inconsistent ladder spacing or tilting, affecting safety. In addition, the adhesive fixing method is prone to ladder loosening or even falling off over long-term use due to adhesive aging or insufficient rebar depth, creating safety hazards and making later maintenance and replacement difficult.

[0003] In summary, the traditional installation method for precast manhole ladders is not only cumbersome, inaccurate, and lacks stability, but also poses certain safety risks. Therefore, there is an urgent need for a mold structure that can integrate the ladder with the precast manhole concrete to improve production efficiency and product quality, and ensure safety during later use. Utility Model Content

[0004] The main purpose of this utility model is to provide a pre-installed ladder structure for prefabricated inspection wells to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution: A ladder installation reserved structure for a prefabricated inspection well includes a pre-embedded cavity with openings at both ends. The pre-embedded cavity is installed inside the well wall of the prefabricated inspection well, with one end opening flush with the inner side of the well wall. Multiple horizontal limiting plates are spaced apart above the bottom surface of the pre-embedded cavity, and the outer ends of the horizontal limiting plates are fixed to the side wall of the pre-embedded cavity.

[0006] Preferably, the embedded cavity is a hollow quadrangular frustum structure, the horizontal cross-section of the embedded cavity is a figure-eight shape, the vertical cross-section of the embedded cavity is a right-angled trapezoidal structure, the opening of the larger end of the embedded cavity is flush with the inner side of the well wall, and the bottom surface of the embedded cavity is a horizontal plane.

[0007] Preferably, four horizontal limiting plates are provided, and the four horizontal limiting plates are respectively provided on the inner walls of both sides of the pre-embedded cavity, with two horizontal limiting plates spaced apart on the inner wall of each side of the pre-embedded cavity.

[0008] Preferably, a vertical limiting plate is provided at one end of the pre-embedded cavity away from the inner side of the well wall.

[0009] Preferably, two vertical limiting plates are provided, and the outer ends of the two vertical limiting plates are respectively connected to the inner walls of the two sides of the pre-embedded cavity.

[0010] Preferably, the bottom and top surfaces of the pre-embedded cavity are provided with reserved holes.

[0011] The beneficial technical effects of this utility model are as follows: 1. The prefabricated inspection well ladder installation reserved structure of this utility model provides dedicated installation space and positioning guarantee for the ladder through customized pre-embedded cavity, horizontal limiting plate and vertical limiting plate. The ladder positioning is accurate and supports standardized installation of the ladder in the factory, eliminating the need for subsequent drilling and rebar installation processes, avoiding damage to the integrity of the well wall. The reserved cavity adopts a modular design, making the installation operation convenient and efficient, thus constructing a ladder system with strong overall structure, high construction efficiency and excellent safety.

[0012] 2. This utility model inserts longitudinal fixing steel bars into the reserved holes to ensure the stability of the reserved cavity during construction and use, while preventing the secondary grouting fine stone concrete layer from falling off, greatly improving the stability and durability of the ladder, enhancing the load-bearing capacity of the prefabricated inspection well, adapting to long-term use needs, and achieving dual optimization of construction efficiency and safety performance. Attached Figure Description

[0013] Figure 1 A horizontal sectional view of the reserved structure in an embodiment of this utility model; Figure 2 This is a front view of the reserved structure of an embodiment of the present utility model; Figure 3 This is a vertical sectional view of the reserved structure in an embodiment of this utility model.

[0014] In the diagram: 1. Embedded cavity; 2. Horizontal limiting plate; 3. Vertical limiting plate; 4. Reserved hole; 5. Precast inspection well; 6. Ladder; 7. Longitudinal fixing steel bar. Detailed Implementation

[0015] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0016] like Figures 1-3 As shown, the ladder installation reserved structure of the prefabricated inspection well provided in this embodiment includes a pre-embedded cavity 1 with openings at both ends. The pre-embedded cavity 1 is installed inside the well wall of the prefabricated inspection well 5 and one end of the opening is flush with the inner side of the well wall. Multiple horizontal limiting plates 2 are arranged at intervals above the bottom surface of the pre-embedded cavity 1, and the outer ends of the horizontal limiting plates 2 are fixed to the side wall of the pre-embedded cavity 1.

[0017] On the reinforcing cage of the prefabricated inspection well 5, slots matching the shape of the embedded cavity 1 are reserved in advance. The number and position of the slots are determined according to the actual installation requirements of the ladder 6. After the embedded cavity 1 is inserted into the corresponding slot and fixed, the reinforcing cage is poured with concrete for the first time to form a wall panel. After the concrete hardens and forms, the embedded cavity 1 will form a cavity in the wall panel for installing the ladder 6.

[0018] The ladder 6 is placed between the bottom surface of the pre-embedded cavity 1 and the horizontal limiting plate 2, and then filled with fiber micro-expansion fine stone concrete to achieve an integral connection between the ladder 6 and the well wall of the prefabricated inspection well 5, thereby constructing a ladder 6 system with strong structural integrity, high construction efficiency, and excellent safety.

[0019] In this embodiment, as Figure 1 As shown, the embedded cavity 1 is a hollow quadrangular frustum structure. The horizontal section of the embedded cavity 1 is a figure-eight structure, and the vertical section of the embedded cavity 1 is a right-angled trapezoidal structure. The opening at the larger end of the embedded cavity 1 is flush with the inner side of the well wall. The bottom surface of the embedded cavity 1 is a horizontal plane, which facilitates the secondary pouring of fine stone concrete and ensures dense filling.

[0020] In this embodiment, as Figure 1 As shown, there are four horizontal limiting plates 2. The four horizontal limiting plates 2 are respectively set on the inner walls of the two sides of the pre-embedded cavity 1. Two horizontal limiting plates 2 are spaced apart on the inner wall of each side of the pre-embedded cavity 1. The horizontal limiting plates 2 press on the top of the ladder 6 to restrict the position of the ladder 6, which facilitates the pouring of concrete.

[0021] In this embodiment, as Figure 2 As shown, a vertical limiting plate 3 is provided at one end of the pre-embedded cavity 1 away from the inner side of the well wall to limit the insertion depth of the ladder 6. When the top surface of the ladder 6 abuts against the vertical limiting plate 3, it indicates that the installation position is in place, so that the installation depth of each ladder 6 is consistent.

[0022] In this embodiment, as Figure 2 As shown, two vertical limiting plates 3 are installed. The outer ends of the two vertical limiting plates 3 are respectively connected to the inner walls of the two sides of the pre-embedded cavity 1 and abut against the two sides of the ladder 6, which can better confirm the depth position and save materials.

[0023] In this embodiment, as Figure 1 As shown, the bottom and top surfaces of the pre-embedded cavity 1 are provided with reserved holes 4.

[0024] Before the first concrete pour, two longitudinal fixing steel bars 7 are inserted into the reserved hole 4 and then connected and fixed to the wall steel bars of the precast inspection well 5. Then the first concrete pour is carried out to ensure the stability of the embedded cavity 1 during construction and use, and to prevent the secondary fine stone concrete layer from falling off.

[0025] In summary, in this embodiment, the installation reserved structure, through the customized pre-embedded cavity 1, horizontal limiting plate 2, and vertical limiting plate 3, provides dedicated installation space and positioning guarantee for the ladder 6. The ladder 6 is accurately positioned, supporting standardized installation of the ladder 6 in the factory, eliminating the need for subsequent drilling and rebar installation processes, avoiding damage to the integrity of the well wall. The reserved cavity adopts a modular design, making installation and operation convenient and efficient, thereby constructing a ladder system with strong overall structural integrity, high construction efficiency, and excellent safety.

[0026] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A precast manhole ladder installation preform structure, characterized by: The pre-embedded cavity (1) with openings at both ends is installed inside the well wall of the prefabricated inspection well and one end of the opening is flush with the inner side of the well wall. Multiple horizontal limiting plates (2) are spaced above the bottom surface of the pre-embedded cavity (1) and the outer end of the horizontal limiting plate (2) is fixed to the side wall of the pre-embedded cavity (1).

2. A pre-fabricated inspection well ladder installation reservation structure according to claim 1, characterized in that: The pre-embedded cavity (1) is a hollow quadrangular frustum structure. The horizontal cross section of the pre-embedded cavity (1) is a figure-eight structure. The vertical cross section of the pre-embedded cavity (1) is a right-angled trapezoidal structure. The opening of the larger end of the pre-embedded cavity (1) is flush with the inner side of the well wall. The bottom surface of the pre-embedded cavity (1) is a horizontal surface.

3. The ladder installation reserved structure for a prefabricated inspection well according to claim 1, characterized in that: There are four horizontal limiting plates (2). The four horizontal limiting plates (2) are respectively set on the inner walls of the two sides of the pre-embedded cavity (1). Two horizontal limiting plates (2) are set at intervals on the inner wall of the pre-embedded cavity (1) on each side.

4. The ladder installation reserved structure for a prefabricated inspection well according to claim 1, characterized in that: A vertical limiting plate (3) is provided at one end of the pre-embedded cavity (1) away from the inner side of the well wall.

5. The ladder installation reserved structure for a prefabricated inspection well according to claim 4, characterized in that: The vertical limiting plates (3) are set in two, and the outer ends of the two vertical limiting plates (3) are respectively connected to the inner walls of the two sides of the pre-embedded cavity (1).

6. The ladder installation reserved structure for a prefabricated inspection well according to claim 1, characterized in that: The bottom and top surfaces of the pre-embedded cavity (1) are provided with reserved holes (4).

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