Socket and spigot type pipe piece circular seam connecting piece

Abstract

A connecting rod is of an integrated structure composed of a screw section on the left half section, a convex ring section on the right half section and a polished rod in the middle, an embedded iron core is wrapped in the connecting rod, a lining is fixed to the middle of the connecting rod, and an embedded screw pipe and an assembled embedded ring pipe are embedded in two pipe pieces needing ring connection respectively. A screw section at the left end of the connecting rod is connected with the embedded screw pipe in a matched mode, and a protruding ring section at the right end of the connecting rod is connected with the assembled embedded ring pipe in an inserted mode in a matched mode and locked and fixed. The circular seam connecting structure is optimized, the embedded screw tube is in threaded connection with the left half part of the connecting rod, and the assembled embedded ring tube and the right end part of the connecting rod are adaptively inserted, locked and fixed, so that the strength of the connecting structure is improved, concentrated distribution of stress is avoided, and the inserted connecting structure realizes the effect of automatic assembling and locking; the overall performance and construction adaptability of the duct piece are comprehensively improved, complex engineering requirements are met, and the modular design structure is convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the shield tunnel construction technical field, concretely relates to a socket type segment ring joint. BACKGROUND

[0002] The current shield tunnel is an important component of urban underground traffic, especially in subway construction, and the shield tunnel segment is the main support and protection structure of the tunnel. The connection method of each segment is a key technology to ensure the stability, waterproof performance and construction efficiency of the tunnel. The ring joint is a connecting measure between the segments, and its connection form gradually develops from a bolt joint to a socket type. However, the existing technology still faces problems such as insufficient connection strength, stress concentration, waterproof performance degradation, and low construction efficiency in complex geological conditions, high groundwater pressure, and long-term operation environment. At the same time, with the development of shield tunnel segment technology, its design gradually moves towards lightweight, high strength, excellent deformation resistance, and comprehensive functionality. The application of new materials (such as steel fiber reinforced concrete) and modular structures is increasingly popular, which puts higher requirements on the ring joint method. Therefore, it is necessary to improve the ring joint. INVENTION CONTENTS

[0003] The utility model solves the technical problem: provide a socket type segment ring joint, through optimizing ring joint structure, adopt pre -buried screw pipe and connecting rod left half part thread connection, and the structure that assembled pre -buried ring pipe and connecting rod right end part adaptation plug -in and lock fixed, solved the above -mentioned defects that exist in traditional connection structure, improved the strength of the connection structure, avoided stress concentration distribution, the connection structure of plug -in type realized the effect that automatic assembly locks, overall performance and construction adaptability of segment were improved, met the complex engineering demand, the modular design structure was convenient for assembly, had higher use value.

[0004] The utility model adopts the technical scheme: socket type segment ring joint, including connecting rod, pre -buried screw pipe and assembled pre -buried ring pipe, the connecting rod is left half segment's screw rod segment, right half segment's convex ring segment and middle part's light pole and is composed of one -piece structure, and the inside of connecting rod is wrapped with embedded iron core, the bushing is located in the middle light pole position and is fixed on the connecting rod, the pre -buried screw pipe and assembled pre -buried ring pipe are pre -buried in two segments that need to be connected, the connecting rod left end screw rod segment is connected with pre -buried screw pipe, and the connecting rod right end convex ring segment is connected with assembled pre -buried ring pipe and is locked and fixed.

[0005] The assembled embedded ring pipe comprises an outer pipe and a three-piece ring pipe, the three-piece ring pipe is a left end constant diameter section and a right end tapered section structure formed by three ring pieces, a groove on a right half section plate surface of the ring piece is located on the tapered section of the three-piece ring pipe, outer threads on the outer wall of the constant diameter section of the three-piece ring pipe are adaptively connected with inner threads on the inner hole wall of the outer pipe, and the tapered section of the three-piece ring pipe forms a natural inwardly retracting sheet structure, the inner hole wall of the tapered section of the three-piece ring pipe is provided with a plurality of tooth grooves to form a ring tooth structure, and a convex ring section at the right end of the connecting rod is inserted into the three-piece ring pipe, and the tooth groove of the outwardly expanding sheet structure at the right end of the three-piece ring pipe is toothedly matched with the convex ring section of the connecting rod and locked.

[0006] Further, the outer wall of the left end of the ring piece is provided with a stopper located at the end of the outer thread, and the outer threads on the three-piece ring pipe are adaptively connected with the inner threads of the outer pipe to stop the outer threads of the outer pipe when the initial end of the inner threads is stopped.

[0007] Preferably, the outer pipe is a tubular structure with openings at both ends, and the right end port of the outer pipe is sealed by a pipe cap connected to the right end of the outer pipe through threads.

[0008] Preferably, the outer pipe is a tubular structure with an opening at the left end and a sealed right end.

[0009] Further, the outer wall of the outer pipe in the embedded screw pipe and the assembled embedded ring pipe is provided with a groove and a convex rib for firm combination with the embedded material during embedding.

[0010] The utility model has the advantages compared with the prior art:

[0011] 1. The technical scheme optimizes the ring seam connection structure, adopts the structure that the embedded screw pipe is threadedly connected with the left half of the connecting rod, and the assembled embedded ring pipe is adaptively inserted and locked with the right end of the connecting rod, solves the above-mentioned defects existing in the traditional connection structure, improves the connection structure strength, avoids stress concentration distribution, and guarantees the stability of the connection and the efficiency of the automatic assembly.

[0012] 2. The technical scheme adopts the assembled embedded ring pipe formed by the outer pipe and the three-piece ring pipe, under the adaptive connection of the outer threads on the outer wall of the constant diameter section of the three-piece ring pipe with the inner threads on the inner hole wall of the outer pipe, the tapered section of the three-piece ring pipe forms a natural inwardly retracting sheet structure which is outwardly expanded and toothedly matched with the convex ring section of the connecting rod and locked, so that the assembled embedded ring pipe with the expandable structure reduces the plastic damage of the connecting rod during insertion, and also guarantees the stability and reliability of the locking.

[0013] 3. The technical scheme has the advantages of simple structure, novel design, convenient and fast connection, automatic assembly and locking effect of the plug-in connection structure, overall improvement of the overall performance and construction adaptability of the pipe piece, meeting of the complex engineering requirements, modular design structure facilitating assembly, and high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure decomposition of the first embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the assembly of the first embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the connecting rod of the utility model;

[0017] Figure 4 This is a schematic diagram of the planar structure of the ring piece of the utility model;

[0018] Figure 5 This is a schematic diagram of the structural decomposition of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0019] The following is a combination of the embodiments of the present invention Figures 1-5 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0020] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0022] Socket-type segment annular joints, such as Figures 1-5 As shown, it includes a connecting rod 1, an embedded spiral tube 2 and an assembled embedded ring tube 7. The connecting rod 1 is an integrated structure consisting of a screw section in the left half, a convex ring section in the right half and a polished rod in the middle, and an embedded iron core 8 is wrapped inside the connecting rod 1. The bushing 3 is located at the middle polished rod position and fixed on the connecting rod 1. The embedded spiral tube 2 and the assembled embedded ring tube 7 are respectively embedded in the two pipe segments that need to be connected between the rings. The screw section at the left end of the connecting rod 1 is adapted to be connected to the embedded spiral tube 2, and the convex ring section at the right end of the connecting rod 1 is adapted to be plugged into and locked and fixed with the assembled embedded ring tube 7. In the above structure, by optimizing the annular seam connection structure, the embedded spiral tube 2 is threadedly connected to the left half of the connecting rod 1, and the assembled embedded ring tube 7 is adapted to be plugged into and locked and fixed with the right end part of the connecting rod 1, which solves the above-mentioned defects of the traditional connection structure, improves the strength of the connection structure, avoids stress concentration distribution, and ensures the stability of the connection and the efficiency of automated assembly.

[0023] like Figure 1 、 5 The assembled embedded ring tube 7 includes an outer tube 4 and a three-petal ring tube 5. The three-petal ring tube 5 is a structure of a left-end equal-diameter section and a right-end conical section composed of three ring pieces 5-1, and the groove 5-3 on the right half plate surface of the ring piece 5-1 is located on the conical section of the three-petal ring tube 5. The external thread 5-2 on the outer wall of the equal-diameter section of the three-petal ring tube 5 is adapted to be connected with the internal thread on the inner hole wall of the outer tube 4, and the conical section of the three-petal ring tube 5 forms a naturally inward-retracted sheet structure. The inner hole wall of the conical section of the three-petal ring tube 5 is a ring tooth structure formed by a plurality of teeth grooves, and the convex ring section at the right end of the connecting rod 1 is inserted into the three-petal ring tube 5, and the teeth groove expanding outward from the right end sheet structure of the three-petal ring tube 5 are aligned with the teeth of the convex ring section of the connecting rod 1. The outer tube 4 and the inner tube 4 are connected by the outer thread 5-2 on the outer wall of the equal-diameter section of the three-petal ring tube 7 and the inner thread 5-3 on the inner hole wall of the outer tube 4. The tapered section of the three-petal ring tube 5 forms a naturally inward-adjusted sheet structure that expands outward and is matched with the tooth shape of the convex ring section of the connecting rod 1 and is locked. The assembled pre-buried ring tube 7 with a supportable structure reduces the plastic damage of the connecting rod 1 during insertion, while also ensuring the stability of the locking and the reliability of the connection.

[0024] like Figure 4As shown in the drawings, the specific structure of the ring piece 5-1 is as follows: a stop block 5-4 is arranged on the outer wall of the left end of the ring piece 5-1 and located at the end of the external thread 5-2, and the external thread 5-2 on the three-piece ring pipe 5 is connected to the stop block 5-4 and blocked when the internal thread of the outer pipe 4 is blocked at the starting end, thereby ensuring the consistency and reliability of the assembled pre-buried ring pipe 7 in the assembled state.

[0025] As shown in the drawings, Figure 5 The outer pipe 4 is a tubular structure with both ends open, and the right end port of the outer pipe 4 is sealed by a pipe cap 6 connected by threads at the right end of the outer pipe 4. Figures 1-2 As shown in the drawings, The outer pipe 4 is a tubular structure with the left end open and the right end sealed.

[0026] In order to improve the pre-buried firmness and reliability, grooves and ribs are arranged on the outer walls of the pre-buried pipe 2 and the outer pipe 4 of the assembled pre-buried ring pipe 7 for firm combination with the pre-buried material during pre-buried, and the outer wall of the pipe cap 6 also has grooves or ribs.

[0027] The implementation method is as follows: the pre-buried pipe 2 and the assembled pre-buried ring pipe 7 need to be embedded in the pipe piece in advance during the casting process of the pipe piece before it leaves the factory; the assembled pre-buried ring pipe 7 is composed of a three-piece ring pipe 5 made of three ring pieces 5-1 and an outer pipe 4, and the assembled pre-buried ring pipe 7 is assembled when it leaves the factory, and the finished product of the assembled pre-buried ring pipe 7 is placed into the completed pipe piece during casting; when the shield machine completes automatic pipe piece assembly, the screw rod section of the connecting rod 1 has been assembled with the pre-buried pipe 2 on the pipe piece, and the subsequent pipe piece only needs to be connected by inserting the convex ring section of the connecting rod 1 into the assembled pre-buried ring pipe 7 and automatically locking and fixing.

[0028] The structure adopts a screw rod plus insertion type connection method, which ensures the stability of the connection and the efficiency of the automatic assembly, and the assembled pre-buried ring pipe 7 of the expandable structure reduces the plastic damage of the connecting rod 1 during insertion, and also ensures the stability of the locking.

[0029] The technical solution has the advantages of simple structure, novel design, convenient and fast connection, automatic assembly and locking effect of the plug-in connection structure, overall improvement of the overall performance and construction adaptability of the pipe piece, meeting the complex engineering requirements, modular design structure facilitating assembly, and high use value.

[0030] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0031] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A bell and spigot segmental ring joint connector characterised in that: The utility model provides a connecting rod (1), preburied screw pipe (2) and assembly type preburied ring pipe (7), the connecting rod (1) is left half segment's screw rod segment, right half segment's convex ring segment and middle light pole constitute integral type structure, and the connecting rod (1) inside is wrapped with embedded iron core (8), the bushing (3) is located in the middle light pole position and is fixed on the connecting rod (1), preburied screw pipe (2) and assembly type preburied ring pipe (7) are preburied in two pipe pieces needing ring connection respectively, the connecting rod (1) left end screw rod segment is connected with preburied screw pipe (2) adaptation, and the connecting rod (1) right end convex ring segment is adapted and is inserted with assembly type preburied ring pipe (7) and is locked fixed.

2. The bell and spigot pipe segment ring joint of claim 1, wherein: The assembly type preburied ring pipe (7) includes an outer tube (4) and a three-piece ring tube (5), the three-piece ring tube (5) is a left end constant diameter section and a right end tapered section structure formed by three ring pieces (5-1), and the slot (5-3) on the right half section of the ring piece (5-1) is located on the tapered section of the three-piece ring tube (5), the outer thread (5-2) on the outer wall of the constant diameter section of the three-piece ring tube (5) is connected with the inner thread on the inner hole wall of the outer tube (4), and the tapered section of the three-piece ring tube (5) forms a natural inwardly retracting sheet structure, the inner hole wall of the tapered section of the three-piece ring tube (5) is provided with a plurality of tooth grooves forming a ring tooth structure, and the convex ring section of the connecting rod (1) is inserted into the three-piece ring tube (5), and the tooth groove of the outwardly expanding sheet structure at the right end of the three-piece ring tube (5) is in toothed engagement with the convex ring section of the connecting rod (1) and is locked.

3. The bell and spigot pipe joint of claim 2, wherein: The outer wall of the left end of the ring piece (5-1) is provided with a stop block (5-4) located at the end of the outer thread (5-2), and the outer thread (5-2) on the three-piece ring tube (5) is connected with the inner thread of the outer tube (4) to stop the initial end of the inner thread of the outer tube (4) when the stop block (5-4) is assembled in place.

4. The bell and spigot pipe joint of claim 3, wherein: The outer tube (4) is a tubular structure with openings at both ends, and the right end port of the outer tube (4) is sealed by a cap (6) connected by threads at the right end of the outer tube (4).

5. The bell and spigot pipe joint of claim 3, wherein: The outer tube (4) is a tubular structure with an opening at the left end and a sealed right end.

6. The bell and spigot pipe joint of any one of claims 1 to 5, wherein: The outer wall of the outer tube (4) in the preburied screw pipe (2) and the assembly type preburied ring pipe (7) is provided with grooves and ribs for firm combination with the preburied material during preburied.

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