Embedded part for vertical bridge of electric well
By using a bendable connecting plate in the embedded parts of the vertical cable tray in the electrical well, the problems of difficult installation and poor stability of the embedded parts of the cable tray are solved, achieving convenient construction and enhanced structural stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-19
AI Technical Summary
The threaded holes of existing cable tray embedded parts are prone to clogging, leading to installation difficulties, poor stability, and potential safety hazards.
The design adopts a bendable connecting plate. The connecting plate is installed before pre-embedding. The splicing part is folded into the cavity before pouring. After pouring, it is folded into a vertical state and spliced with the cable tray. The connector extends into the floor slab to enhance stability.
It solves the problems of inconvenient installation and poor stability caused by thread hole blockage, and improves construction convenience and structural stability.
Smart Images

Figure CN224259617U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable tray installation technology, specifically to a pre-embedded component for a vertical cable tray in an electrical well. Background Technology
[0002] Cable tray installation is an important step in building electrical engineering. In conventional cable tray installation, openings are usually reserved in the main structure of the floor slab, and then fireproofing is carried out according to standard drawings after the cable tray installation is completed. This process is complicated, has a long construction period, and makes it difficult to control the quality.
[0003] In response, existing technologies, such as the utility model patent with patent number CN 216195500 U, disclose a cable tray pre-embedded device, including cable tray pre-embedded parts, multiple connecting pipes and connecting components, which reduces the above-mentioned fireproof sealing procedures, improves the fire resistance rating, ensures construction quality, and has an excellent appearance.
[0004] In the aforementioned prior art, the height of the cable tray embedded part is the same as the thickness of the electrical shaft floor slab, which can facilitate the improvement of the pouring efficiency of the electrical shaft floor slab and ensure the connection between the cable tray embedded part and the electrical shaft floor slab after pouring. Therefore, the connecting component is installed only after pouring is completed to avoid affecting the pouring construction, and the connecting component is detachably fixed to the inner wall of the cable tray embedded part by screws.
[0005] However, detachably fixing the connecting components to the inner wall of the cable tray embedded parts with screws requires threaded holes to be made in the inner wall of the embedded parts. Furthermore, the existing technology proposes that the cable tray embedded parts are made of galvanized steel sheets. In actual construction, due to the thickness of the galvanized steel sheets, the threaded holes usually penetrate the side wall of the cable tray embedded parts. However, the side wall of the cable tray embedded parts needs to be in direct contact with the concrete during pouring, which can easily lead to blockage of the threaded holes. This blockage can cause installation difficulties when installing the connecting components later. In addition, also limited by the thickness of the galvanized steel sheets, the depth of the threaded holes is usually shallow, resulting in unreliable installation of the connecting components. This leads to installation stability issues for the vertical derrick based on the connecting components, posing a safety hazard.
[0006] Therefore, it is necessary to study a pre-embedded component for a vertical cable tray in an electrical well. Utility Model Content
[0007] Therefore, the purpose of this utility model is to provide a pre-embedded part for a vertical cable tray in an electrical well, which can effectively solve the problems of installation difficulties and poor stability in the connection nodes between the pre-embedded part and the connecting components.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0009] An embedded component for a vertical cable tray in an electrical shaft includes an embedded sleeve, a connecting assembly, and a connecting pipe. The embedded sleeve is embedded in the floor slab of the electrical shaft. The vertical height of the embedded sleeve is the same as the vertical thickness of the floor slab of the electrical shaft. The embedded sleeve has a square, vertically penetrating cavity.
[0010] The connecting pipe is vertically fixed to the outer wall of the pre-embedded sleeve and communicates with the chamber.
[0011] The connecting assembly includes a connecting plate and connectors. The connecting plate is an integral, bendable plate structure. The connecting plate includes a fixing part and a splicing part. The fixing part is vertically mounted on the inner wall of the chamber, and both the fixing part and the inner wall of the chamber have through mounting holes.
[0012] The connector passes through the mounting hole on the inner wall of the chamber to fix the fixing part to the pre-embedded sleeve, and one end of the connector is pre-embedded in the electric well floor slab.
[0013] When the splicing part is bent to a horizontal position, both the splicing part and the fixing part are located inside the cavity;
[0014] When the splicing part is bent to a vertical position, the splicing part extends upward or downward out of the cavity.
[0015] Furthermore, an outwardly opening bending groove is provided between the fixing part and the splicing part, and the bending groove is distributed in the cavity.
[0016] Furthermore, the connecting assembly is disposed on the two side walls adjacent to the side wall that is fixedly connected to the connecting pipe in the chamber, and splicing parts are provided at both the upper and lower ends of the fixing part.
[0017] Furthermore, the splicing part is provided with a through-hole for adjustment.
[0018] Furthermore, the connector is provided in multiple sets, and the portion of the connector extending out of the mounting hole is threadedly connected to a threaded sleeve.
[0019] Furthermore, the sidewall of the threaded sleeve is provided with an anchoring wing plate.
[0020] The beneficial effects of the above technical solution are:
[0021] This invention integrates the splicing part and the fixing part into a single bent structure. When the splicing part is bent to a horizontal state, it is located inside the cavity, thus avoiding interference with the pouring of the electrical shaft floor slab. When the splicing part is bent to a vertical state, it extends upward or downward out of the cavity, facilitating splicing and connection with the vertical cable tray after pouring. This bendable design allows the connecting plate to be installed before the pre-embedded sleeve without affecting the pouring construction. It directly allows the connector to pass through the installation hole from inside the cavity to the outside, fixing the connecting plate to the pre-embedded sleeve. This avoids the installation inconvenience caused by the blockage of threaded holes when installing connecting components after pouring in the prior art, reducing the difficulty of construction.
[0022] Furthermore, compared to existing technologies, the connector can extend outwards, with the portion extending out of the mounting hole pre-embedded in the electrical well floor slab. This not only avoids the problem of poor stability caused by shallow threaded holes, but the extended portion of the connector also forms a pre-embedded and anchored effect, enhancing the stability of the pre-embedded sleeve itself and the stability of the connection node with the connecting components.
[0023] In summary, this utility model, based on the advantages of existing technologies where the height of the pre-embedded sleeve is the same as the thickness of the electrical shaft floor slab and the connecting components are fixedly connected to the inner wall of the pre-embedded sleeve, improves the timing of the installation of the connecting plate by using a bendable connecting plate before pre-embedding. This solves the problems of installation difficulties and poor stability at the connection nodes between the cable tray pre-embedded parts and the connecting components due to bolt hole blockage and depth limitations, without affecting normal pouring construction, and further improves the convenience of installation and the stability of the structure. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention;
[0025] Figure 2 for Figure 1 Top view;
[0026] Figure 3 Pre-embedded rear edge for this utility model Figure 2 A cross-sectional view along the AA direction;
[0027] Figure 4 This is a schematic diagram of another state of the connecting plate of this utility model;
[0028] Figure 5 A cross-sectional view of the pre-embedded connecting plate in another state;
[0029] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;
[0030] Figure 7Three-dimensional drawings of the connectors and threaded sleeves;
[0031] Figure 8 This is a planar assembly drawing of the connector and the threaded sleeve.
[0032] Reference numerals in the attached drawings: 1 is the embedded sleeve, 2 is the connecting component, 3 is the connecting pipe, 4 is the electric shaft floor slab, 5 is the connecting plate, 6 is the connector, 7 is the threaded sleeve, 8 is the anchoring wing plate, 101 is the chamber, 501 is the splicing part, 502 is the fixing part, 503 is the bending groove, and 504 is the adjusting flat hole. Detailed Implementation
[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0034] Example 1: This example aims to provide a vertical cable tray embedded part for electrical wells, which is mainly used for the pre-embedding construction of electrical well cable trays. It addresses the problems of installation difficulties and poor stability in the connection node between the cable tray embedded part and the connecting component 2.
[0035] A type of embedded part for vertical cable trays in electrical wells, such as Figure 1 and Figure 2 It includes a pre-embedded sleeve 1, a connecting assembly 2, and a connecting pipe 3; the pre-embedded sleeve 1 is square and has a square, vertically penetrating chamber 101, such as... Figure 3 The height of the embedded sleeve 1 is the same as the thickness of the electrical shaft floor slab 4, which facilitates the improvement of the pouring efficiency of the electrical shaft floor slab 4 and ensures the firm connection between the cable tray embedded parts and the electrical shaft floor slab 4 after pouring. The connecting pipe 3 is vertically fixed on the outer wall of the embedded sleeve 1 and communicates with the chamber 101. The connecting pipe 3 is mainly used for the cables embedded in the electrical shaft floor slab 4 to pass through and connect to the embedded sleeve 1, so that the cables can enter the vertical cable tray and can protect the cables during concrete pouring.
[0036] like Figure 4 The connecting component 2 includes a connecting plate 5 and a connector 6. The connecting plate 5 is an integral, bendable plate structure, such as a galvanized steel plate. The connecting plate 5 includes a fixing part 502 and a splicing part 501. The fixing part 502 and the inner wall of the cavity 101 of the pre-embedded sleeve 1 are both provided with through mounting holes. The mounting holes are threaded holes. In this embodiment, the connector 6 is a bolt and is equipped with a nut. The connecting component 2 is installed before pre-embedding. The connector 6 passes through the mounting hole from the inside of the cavity 101 to the outside of the cavity 101 to fix the connecting plate 5 and the pre-embedded sleeve 1. It is then tightened with a nut. The connector 6 continues to extend outward, and the part extending out of the mounting hole is reserved in the electric shaft floor slab 4. It is pre-embedded together with the subsequent concrete pouring to further enhance the stability of the structure.
[0037] like Figure 3 and Figure 5The splicing part 501 and the fixing part 502 are an integral structure. The splicing part 501 can be bent relative to the fixing part 502. When the splicing part 501 is bent to a horizontal state, the splicing part 501 is located in the cavity 101, thereby avoiding the splicing part 501 from causing obstruction during the pouring of the floor slab. When the splicing part 501 is bent to a vertical state, the splicing part 501 extends upward or downward out of the cavity 101 for splicing and connection with the vertical cable tray.
[0038] To facilitate bending of the splicing part 501, such as Figure 6 A horizontal, outwardly opening bending groove 503 is provided between the fixing part 502 and the splicing part 501. The bending groove 503 is distributed in the cavity 101, and an easy-to-bend area is formed at the bending groove 503 to facilitate control of the bending position.
[0039] To further improve the stability of the structure, such as Figure 4 The connecting component 2 is set on the two side walls adjacent to the side wall of the connecting pipe 3 in the chamber 101. Both the upper and lower ends of the fixing part 502 are provided with splicing parts 501, and the fixing part 502 and the upper and lower splicing parts 501 maintain an integrated structure to improve the overall strength of the connecting plate 5 and reduce the torque effect generated during bending.
[0040] To facilitate the splicing of the splicing part 501 with the vertical derrick, such as Figure 4 The splicing part 501 has a vertically extending adjustment flat hole 504. The adjustment flat hole 504 is located in the area where the splicing part 501 extends out of the cavity 101. The adjustment flat hole 504 allows the fixed node to be finely adjusted in height.
[0041] The method of use in this embodiment is as follows: Before pouring the electrical shaft floor slab 4, assemble the pre-embedded sleeve 1 and the connecting component 2. Pass the connecting piece 6 from inside the cavity 101 outward through the mounting hole to fix the connecting plate 5 to the pre-embedded sleeve 1. Bend the splicing part 501 from the bending groove 503 to a horizontal state, so that the splicing part 501 is located inside the cavity 101. Then, deploy the pre-embedded sleeve 1 in the electrical shaft floor slab 4, wherein the part of the connecting piece 6 extending outward through the mounting hole is also located inside the electrical shaft floor slab 4. After that, pour the electrical shaft floor slab 4, and pre-embed the pre-embedded sleeve 1 and the part of the connecting piece 6 extending outward through the mounting hole. After the concrete has solidified, bend the splicing part 501 to a vertical state and splice it with the vertical cable tray.
[0042] Example 2 is basically the same as Example 1, except that the connector 6 has been optimized. This example further describes the structure.
[0043] In this embodiment, as Figure 6Each connecting plate 5 is fixedly connected by six sets of connectors 6. Each connector 6 has a threaded connection to the part extending from the mounting hole with a threaded sleeve 7. The side wall of the threaded sleeve 7 is provided with an anchoring wing plate 8, so that the threaded sleeve 7 can not only play a fastening role similar to a nut, but also enhance the pre-embedded effect through the anchoring wing plate 8, further increasing the pre-embedded strength of the pre-embedded sleeve 1 itself and the strength of the connection node with the connecting component 2.
Claims
1. A pre-embedded component for a vertical cable tray in an electrical shaft, comprising a pre-embedded sleeve (1), a connecting assembly (2), and a connecting pipe (3), wherein the pre-embedded sleeve (1) is pre-embedded in the floor slab (4) of the electrical shaft, characterized in that: The vertical height of the pre-embedded sleeve (1) is the same as the vertical thickness of the electric well floor slab (4), and the pre-embedded sleeve (1) has a square vertically penetrating cavity (101). The connecting pipe (3) is vertically fixed on the outer wall of the pre-embedded sleeve (1) and communicates with the chamber (101); The connecting assembly (2) includes a connecting plate (5) and a connector (6). The connecting plate (5) is an integral, bendable plate structure. The connecting plate (5) includes a fixing part (502) and a splicing part (501). The fixing part (502) is vertically installed on the inner wall of the chamber. The fixing part (502) and the inner wall of the chamber (101) are both provided with through mounting holes. The connector (6) passes through the mounting hole on the inner wall of the fixing part (502) and the chamber (101) to fix the fixing part (502) to the pre-embedded sleeve (1), and one end of the connector (6) is pre-embedded in the electric well floor slab (4); When the splicing part (501) is bent to a horizontal state, both the splicing part (501) and the fixing part (502) are located inside the chamber (101); When the splicing part (501) is bent to a vertical position, the splicing part (501) extends upward or downward out of the cavity (101).
2. The embedded part for a vertical cable tray in an electrical well according to claim 1, characterized in that: A bending groove (503) with an outward opening is provided between the fixing part (502) and the splicing part (501), and the bending groove (503) is distributed in the cavity (101).
3. The embedded part for a vertical cable tray in an electrical well according to claim 1, characterized in that: The connecting component (2) is located on the two side walls adjacent to the side wall of the connecting pipe (3) in the chamber (101), and the upper and lower ends of the fixing part (502) are provided with splicing parts (501).
4. The embedded part for a vertical cable tray in an electrical well according to claim 1, characterized in that: The splicing part (501) is provided with a through-hole (504).
5. The embedded part for a vertical cable tray in an electrical well according to claim 1, characterized in that: The connector (6) is provided in multiple sets, and the portion of the connector (6) extending out of the mounting hole is threadedly connected to a threaded sleeve (7).
6. The embedded part for a vertical cable tray in an electrical well according to claim 5, characterized in that: The side wall of the threaded sleeve (7) is provided with an anchoring wing plate (8).