A special-section expansion joint

Abstract

The present invention discloses a special-shaped cross-section expansion joint, comprising: lifting ring plates at both ends, a bellows flexible component, a transport limit fixing structure and a reinforcing rib plate; the bellows flexible component comprises two sections of left and right bellows, left and right end pipes and a middle pipe; the transport limit fixing structure comprises studs and nuts; the lifting ring plates at both ends are fixed internally to two adjacent sections of special-shaped cross-section pipes, and externally to the left and right end pipes; reinforcing rib plates are provided on the outer sides of the lifting ring plates at both ends; the two sides of the two sections of bellows are respectively connected to the left and right end pipes and the middle pipe. The present invention firstly realizes overall compensation for the thermal expansion and contraction displacement of a special-shaped rail transit pipe system; secondly, it reduces and absorbs the vibration of the special-shaped pipe system when the special-shaped rail transit vehicle is running at high speed; and finally, realizes overall reliable sealing between the segmented special-shaped pipes to ensure the structural safety of the special-shaped rail transit pipe system.

Description

Technical Field

[0001] The invention belongs to the technical field of expansion joints, and in particular relates to an expansion joint with a special-shaped cross-section. Background Art

[0002] The structure of the existing large diameter expansion joint is either a circular expansion joint 100 (such as Figure 1 As shown), or a rectangular expansion joint 200 (as Figure 3 However, to address the practical need for displacement compensation for special-shaped cross-section pipes in a dedicated rail transit system, there is a lack of an expansion joint that can both protect the structural safety of the special-shaped cross-section pipes and ensure the sealing performance. Therefore, a new device is urgently needed to solve this problem. Summary of the Invention

[0003] The purpose of the present invention is to provide a special-shaped cross-section expansion joint to solve the practical demand for displacement compensation of special-shaped cross-section pipes in a certain dedicated rail transit system. There is a lack of an expansion joint that can protect the structural safety of the special-shaped cross-section pipes of the dedicated rail transit and ensure the sealing of the special-shaped cross-section pipes of the dedicated rail transit.

[0004] The present invention provides an expansion joint with a special-shaped cross-section, comprising: lifting ring plates at both ends, a bellows flexible component, a transport limit fixing structure and a reinforcing rib plate;

[0005] The bellows flexible assembly includes two sections of bellows, left and right end pipes, left and right end pipes, and a middle pipe; the transport limit fixing structure includes studs and nuts;

[0006] The lifting ring plates at both ends are fixed internally to two adjacent sections of special-section pipes, and externally to the left and right end pipes; reinforcing ribs are provided on the outside of the lifting ring plates at both ends; the two sides of the two sections of the corrugated pipes are respectively connected to the left and right end pipes and the middle end pipe; a reinforcing ring plate is connected to the outer surface of the left and right end pipes respectively, and the double-headed studs of the transport limit fixing structure pass through the reinforcing ring plates on the left and right end pipes and are fixed by nuts.

[0007] Furthermore, the left and right sections of the corrugated pipe and the left and right end pipes are symmetrical about the center of the middle pipe.

[0008] Furthermore, the outer surface of the intermediate connecting pipe is connected to two reinforcing ring plates, and the two reinforcing ring plates are connected via an external short pipe.

[0009] Furthermore, an expansion joint is left between the two adjacent sections of special-shaped cross-section pipes.

[0010] Furthermore, one end of the special-shaped cross-section pipe is connected to the guide tube.

[0011] The beneficial effects of the present invention are as follows: the present invention provides a special-shaped cross-section expansion joint, which firstly compensates for the thermal expansion and contraction displacement of a special-shaped rail transit pipe system as a whole; secondly, it reduces and absorbs the vibration of the special-shaped pipe system when the special-shaped rail transit vehicle runs at high speed; finally, it realizes the reliable sealing between the segmented special-shaped pipes as a whole, ensuring the structural safety of the special-shaped rail transit pipe system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a structural diagram of a circular expansion joint;

[0014] Figure 2 This is a structural diagram of a rectangular expansion joint;

[0015] Figure 3 This is a structural diagram of a special-section expansion joint.

[0016] Illustration: 100-circular expansion joint; 200-rectangular expansion joint; 1-lifting ring plates at both ends; 2-bellows flexible component; 3-transport limit fixing structure; 4-reinforcement rib plate; 5-special-section pipe; 6-guide tube; 21-bellows; 22-pipe; 23-middle pipe; 31-stud; 32-nut. DETAILED DESCRIPTION

[0017] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0018] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0019] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of layers and regions is exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0020] See also Figure 3 The present invention provides a special-shaped cross-section expansion joint, comprising: lifting ring plates 1 at both ends, a bellows flexible component 2, a transport limit fixing structure 3 and a reinforcing rib plate 4;

[0021] The bellows flexible assembly 2 includes two sections of bellows 21, two ends of the bellows 21, and a middle pipe 23. The transport limit fixing structure 3 includes a stud 31 and a nut 32.

[0022] The lifting ring plates 1 at both ends are fixed internally to two adjacent sections of special-section pipes 5, and externally to the left and right end pipes 22; reinforcing ribs 4 are provided on the outside of the lifting ring plates 1 at both ends; the two sides of the two sections of the corrugated pipes 21 are respectively connected to the left and right end pipes 22 and the middle pipe 23; a reinforcing ring plate is connected to the outer surface of the left and right end pipes 22 respectively, and the studs 31 of the transport limit fixing structure 3 pass through the reinforcing ring plates on the left and right end pipes 22 and are fixed by nuts 32.

[0023] In this embodiment, the left and right sections of the corrugated pipe 21 and the left and right end pipes 22 are symmetrical about the center of the middle pipe 23 .

[0024] In this embodiment, two reinforcing ring plates are connected to the outer surface of the intermediate connecting pipe 23 , and the two reinforcing ring plates are connected via an external short pipe.

[0025] In this embodiment, an expansion joint is left between the two adjacent sections of the special-shaped cross-section pipes 5 .

[0026] In this embodiment, one end of the irregular cross-section pipe 5 is connected to the guide tube 6 .

[0027] The working principle of the special-shaped cross-section expansion joint provided by the present invention is as follows: while compensating for the thermal expansion and contraction displacement of the special-shaped pipe system through the special-shaped cross-section expansion joint as a whole, it can also play the role of system vibration reduction and sealing, ensuring the structural safety of the special-shaped cross-section pipe system for dedicated rail transit.

[0028] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein.

[0029] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A special-section expansion joint, characterized in that: include: Lifting ring plates (1) at both ends, a bellows flexible component (2), a transport limit fixing structure (3) and a reinforcing rib plate (4); The bellows flexible assembly (2) includes two sections of bellows (21), left and right end pipes (22), and a middle pipe (23); the transport limit fixing structure (3) includes a stud (31) and a nut (32); The lifting ring plates (1) at both ends are fixed internally to two adjacent sections of irregular-section pipes (5) and externally to the left and right end pipes (22); a reinforcing rib plate (4) is provided on the outside of the lifting ring plates (1); the two sides of the two sections of the corrugated pipe (21) are respectively connected to the left and right end pipes (22) and the middle pipe (23); a reinforcing ring plate is respectively connected to the outer surface of the left and right end pipes (22); the stud bolts (31) of the transport limit fixing structure (3) pass through the reinforcing ring plates on the left and right end pipes (22) and are fixed by nuts (32); The left and right sections of the bellows (21) and the left and right end pipes (22) are symmetrical about the center of the middle pipe (23); The outer surface of the intermediate connecting pipe (23) is connected to two reinforcing ring plates, and the two reinforcing ring plates are connected via an external short pipe.

2. The special-section expansion joint according to claim 1, characterized in that: An expansion joint is left between the two adjacent sections of irregular-section pipes (5).

3. The special-section expansion joint according to claim 1, characterized in that: One end of the special-shaped cross-section pipe (5) is connected to the guide tube (6).

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