Prefabricated shield segment embedded connecting piece

Abstract

The utility model discloses a prefabricated shield segment pre-embedded connecting piece which comprises a connecting plate, two cylindrical parts extending towards the rear side are arranged on the connecting plate, each cylindrical part is of a hollow structure, a screw hole is formed in the inner side of each cylindrical part, a plug is screwed into an opening of each cylindrical part to achieve sealing, a connecting piece is further arranged on the front face of the connecting plate, and the connecting piece is connected with the connecting plate. The device is simple in structure, low in cost and convenient to construct.

Description

Technical Field

[0001] The utility model relates to the field of shield segment processing, in particular to a prefabricated shield segment embedded connector. Background Art

[0002] The construction process of a shield tunnel is generally to prefabricate the segments in a segment factory to form prefabricated components of specific specifications, which are then transported to the construction site and assembled in the shield machine. After the entire tunnel is completed, the supports and pipelines are finally installed.

[0003] Current status of related technologies in this field:

[0004] The conventional pipeline layout method is mainly to fix the bracket on the pipe segment and then lay the pipeline. There are two main conventional bracket connection devices: one is to fix the bracket with post anchor bolts, and the other is to fix it with a slide groove.

[0005] In recent years, the use of embedded steel chutes in subway shield segments has been widely used. It forms a reinforced overall linear structure within the segment layer with uniform force, which is conducive to the precise installation and adjustment of equipment and facilities, overcomes the defects of temporary drilling methods, and is conducive to the reserved process requirements of mechanized tunnel construction, greatly improving the convenience and safety of tunnel facility installation.

[0006] The embedded chute technology is a technology that embeds steel chutes on reinforced concrete structures to install and fix electromechanical equipment systems. The electromechanical equipment systems in urban rail transit systems are complex, and a large number of equipment and pipelines need to be installed and fixed on reinforced concrete structures. Traditional expansion bolt or drilling and embedding technology is highly destructive to the reinforced concrete structure itself, affecting the safety and durability of the structure. Therefore, the promotion and application of embedded chute technology in urban rail transit systems is of particular significance.

[0007] However, in most segment factories, the segment molds have already been manufactured. If the molds need to be replaced due to the pre-embedded chute, the cost is too high and difficult to achieve. The pre-embedded chute limiting structure of the shield segment proposed in Application No.: CN202121746976.5 provides a solution to this problem. However, the volume of the pre-embedded structure inserted into the shield segment is large, which affects the structural strength of the shield segment. At the same time, its structure is relatively complex. In order to position the pre-embedded chute on the segment mold, locking parts are required to fix it, which is costly. Summary of the invention

[0008] In order to provide a pre-embedded part with low cost and without damaging the structure of the shield segment, the present utility model proposes a pre-embedded connecting part for precast shield segments, and its structure includes: a connecting plate, on which there are two cylindrical parts extending backward, the cylindrical parts are of hollow structure, the inner side thereof is a screw hole, and the opening of each cylindrical part is closed by screwing in a plug, and a connecting piece is also provided on the front surface of the connecting plate.

[0009] Preferably, the outer walls of the two cylindrical parts are connected by a connecting rod, and there is a gap between the connecting rod and the connecting plate.

[0010] Preferably, the connecting rod is arranged at the rear end of the cylindrical part, and the cylindrical part protrudes 2 - 5 cm from the rear surface of the connecting plate.

[0011] Preferably, the plug is made of plastic, and it includes a screw rod for screwing into the cylindrical part, and a flat groove or a cross groove for facilitating screwing in and out is provided at the head of the screw rod.

[0012] Preferably, there are two connecting pieces, which are respectively arranged on both sides of the front end surface of the connecting plate, and the connecting pieces are made of permanent magnet products or double-sided adhesive products.

[0013] In the present utility model, when pouring the shield segment, the front surface of the connecting plate can be attached to the position drawn on the mold, and the connecting plate is temporarily fixed to the mold by magnetism or double-sided adhesive. After pouring is completed, it can be easily detached from the mold and buried in the surface of the shield segment. When installing pipelines and other facilities, the plug can be screwed out for use. The structure of the present utility model is simple, the cost is low, and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a three-dimensional view of the present utility model.

[0016] Figure 2 It is a front view of the present utility model.

[0017] Figure 3 It is a top view of the present utility model.

[0018] In the figure: 1. Connecting rod; 2. Cylindrical part; 3. Connecting plate; 4. Connecting piece; 5. Plug; 6. Flat groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] All the components (components without specific structures) selected in this application are common standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0020] In the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling, direct coupling, or communication connection can be through some communication interfaces. The indirect coupling or communication connection of the devices or units can be in an electrical, mechanical, or other forms.

[0023] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0024] In addition, in each embodiment of the present utility model, the functional units can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. Embodiment 1

[0025] As Figures 1-3 shown, the descriptions of the front, rear, left, right, top, and bottom positions in this example are based on the Figure 2 front view. The precast shield segment embedded connecting piece of the present utility model has a structure including a strip-shaped connecting plate 3 with a thickness of 3 mm. Two cylindrical parts 2 extending backward are provided on the connecting plate 3. The cylindrical parts 2 are of a hollow structure, and the inner sides thereof are threaded holes. The openings at the front ends of each cylindrical part 2 are closed by screwing in a plug 5 to prevent the threaded holes from being sealed by concrete during concrete pouring. A connecting piece 4 is also provided on the front surface of the connecting plate 3.

[0026] Preferably, the outer walls of the two cylindrical parts 2 are connected by a connecting rod 1. There is a gap between the connecting rod 1 and the connecting plate 3. The connecting rod 1 can strengthen the connection between the connecting plate 3 and the shield segment and prevent the connecting plate 3 from disengaging from the shield segment.

[0027] Preferably, the connecting rod 1 is arranged at the rear end of the cylindrical part 2, and the cylindrical part 2 protrudes 3 cm from the rear surface of the connecting plate 3.

[0028] Preferably, the plug 5 is made of nylon and includes a screw rod for screwing into the cylindrical part 2. A slotted head 6 for facilitating screwing in and out is provided at the head of the screw rod.

[0029] Preferably, there are two connecting pieces 4 which are respectively arranged on both sides of the front end face of the connecting plate 3. The connecting pieces 4 are made of permanent magnet and protrude 0.5 - 1 cm from the front end face of the connecting plate 3.

[0030] By clamping the clamping part on the corresponding clamping groove on one side of the shield segment to form a fixed connection, then fixing the fixing part with the pipeline installation plate to the clamping part, and then arranging the pipeline on the pipeline installation plate, the layout of the pipeline can be realized. Using the present utility model to layout the tunnel pipeline is convenient and rapid, and there is no need for operations such as punching, and at the same time, the structural strength of the shield segment is not affected.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A precast shield segment embedded connecting piece, characterized in that: Including: A connecting plate, on which there are two cylindrical parts extending backward. The cylindrical parts are hollow structures, with screw holes on the inner side. The opening of each cylindrical part is closed by screwing in a plug. There is also a connecting piece on the front surface of the connecting plate.

2. The embedded connector for precast shield segments according to claim 1, wherein: The outer walls of the two cylindrical parts are connected by a connecting rod, and there is a gap between the connecting rod and the connecting plate.

3. The precast shield segment embedded connector according to claim 2, wherein: The connecting rod is arranged at the rear end of the cylindrical part, and the cylindrical part protrudes 2 - 5 cm from the rear surface of the connecting plate.

4. The precast shield segment embedded connector according to claim 3, characterized in that: The plug is made of plastic, and it includes a screw rod for screwing into the cylindrical part. There is a slotted screwdriver slot or a Phillips screwdriver slot on the head of the screw rod to facilitate screwing in and out.

5. The precast shield segment embedded connector according to claim 4, characterized in that: There are two connecting pieces, which are respectively arranged on both sides of the front end surface of the connecting plate. The connecting pieces are made of permanent magnet or double-sided adhesive.

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