Stray terminal and expansion joint template integrated fixing device for subway

By designing an integrated fixing device for stray terminals and telescopic joint templates including rail fixing mechanisms and adjustable position mechanisms, the problem of stray terminals and telescopic joint templates in subway projects is solved, precise positioning and efficient construction are achieved, and improved The quality and life of the subway track structure.

CN222119805UActive Publication Date: 2024-12-06CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420563553.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-22
Publication Date
2024-12-06
Estimated Expiration
2034-03-22

AI Technical Summary

Technical Problem

In subway projects, it is difficult to fix stray terminals and expansion joint templates at the same time, resulting in the failure to meet the standards for stray terminals and the inadequate sealing of expansion joints, which affects the normal use of cable connections and track bed structure.

Method used

An integrated fixing device for stray terminals and telescopic joint templates is designed, including rail fixing mechanisms, connecting plates, connecting rods, stray terminal fixing mechanisms and transversely adjustable position mechanisms. The stray terminals and telescopic joint templates are connected through these components. Fixed on the rails to achieve accurate positioning and adjustment.

Benefits of technology

This device can effectively solve the problems of inaccurate position of stray terminals buried in the track bed and the skewed and misaligned expansion joints, improve construction quality and construction efficiency, and ensure the normal use of cable connections and track bed structure.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222119805U_ABST
    Figure CN222119805U_ABST
Patent Text Reader

Abstract

The utility model relates to a stray terminal and expansion joint template integrated fixing device for a subway. A stray terminal and an expansion joint formwork are both arranged at the end of a ballast bed, due to the fact that the underground construction space is limited, if the stray terminal and the concrete formwork at the end of the ballast bed are fixed through two tools respectively, on one hand, the construction efficiency is reduced, and on the other hand, the installation and fixing quality can be influenced mutually. The device comprises a steel rail fixing mechanism, a connecting flat plate, a connecting rod, a stray terminal fixing mechanism, a transverse position adjusting mechanism and an expansion joint template fixing plate, the stray terminal fixing mechanism and the expansion joint template fixing plate are integrated, and the whole device is fixed on a steel rail through the steel rail fixing mechanism. According to the utility model, while the construction space is saved, the phenomenon that the stray terminal is embedded in the ballast bed, is inclined or is much higher than the surface of the ballast bed can be effectively solved, and the phenomenon that the expansion joint at the end part of the ballast bed slab is inclined and misplaced is also solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of subway track engineering, in particular to an integrated fixing device for a subway stray terminal and an expansion joint template. Background Art

[0002] At present, most domestic subway projects adopt underground structures, and the track structure mainly adopts integral roadbed. According to the relevant requirements of stray current discharge, stray terminals need to be buried in the integral roadbed. Since the stray terminals are connected by cables, the terminals are required to be exposed about 3mm to 5mm from the roadbed concrete surface. The stray terminals are welded to the steel bars in the roadbed through flat steel at the ends of the integral roadbed. Their vertical positions are affected by the positions of the steel bars and the vibration during the concrete pouring process. On site, there are phenomena such as the terminals being completely buried in the roadbed concrete, the terminals being exposed to the roadbed surface at a height of less than 3mm, and the terminals being higher than the roadbed surface by 5mm. This results in the terminals not being buried up to standard, affecting the connection of the cables, and further affecting the normal discharge of stray current.

[0003] The underground shield tunnel of the subway project is mainly composed of unitized integral roadbeds, and the joint filling materials between the unit structures are mainly asphalt wood boards and polyethylene foam boards. The top is sealed with asphalt hemp tendons or silicone to prevent water leakage in the tunnel from entering the inside of the roadbed and deteriorating the normal performance of the roadbed structure. With the continuous development of sealing materials, polyethylene foam boards and silicone sealing measures are used between the unit roadbed plates of ballastless tracks in domestic high-speed railway projects, and the sealing effect is good. The subway project draws on the successful experience of high-speed rail and introduces polyethylene foam boards and silicone into the joint filling materials between the joints of the subway integral roadbed plates. Due to the limited construction space of underground projects, the polyethylene foam board itself is relatively soft, and in most cases, a 2mm to 3mm thick template is used as a concrete template at the end. The roadbed plate concrete is easily deformed and displaced during construction, and the roadbed plate joints are skewed and dislocated, resulting in inadequate sealing of the expansion joints and leakage of water into the roadbed, affecting the normal service life of the roadbed.

[0004] To sum up, the stray terminals and expansion joint templates are both at the end of the ballast bed. Due to the limited underground construction space, if two kinds of tooling are used to fix the stray terminals and the concrete templates at the end of the ballast bed respectively, on the one hand, the construction efficiency will be reduced, and on the other hand, the quality of installation and fixation may be affected by each other. Therefore, an integrated fixing device for stray terminals and expansion joint templates is urgently needed. Summary of the invention

[0005] The utility model aims to provide an integrated fixing device for stray terminals and expansion joint templates for subways, so as to at least solve the problem that the stray terminals and the expansion joint templates cannot be fixed simultaneously at present.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A stray terminal and expansion joint template integrated fixing device for subway, the device comprising a rail fixing mechanism, a connecting plate, a connecting rod, a stray terminal fixing mechanism, a laterally adjustable position mechanism and an expansion joint template fixing plate;

[0008] The stray terminal fixing mechanism and the expansion joint template fixing plate are integrated into one body, and the entire device is fixed on the rail by the rail fixing mechanism;

[0009] The bottom surface and inner side surface of the rail fixing mechanism are in close contact with the top surface and side surface of the rail, the other side surface of the rail fixing mechanism is connected to one end of the connecting plate through a connecting screw, and the other end of the connecting plate is fixedly connected to the stray terminal fixing mechanism through the laterally adjustable position mechanism;

[0010] The expansion joint template fixing plate is fixedly connected to the connecting flat plate and the rail fixing mechanism respectively through the connecting rod.

[0011] Furthermore, the rail fixing mechanism is T-shaped, and a wedge-shaped groove is provided on the side connected to the connecting plate, and a protruding wedge that fits with the wedge-shaped groove of the rail fixing mechanism is provided on the side connected to the connecting plate and the rail fixing mechanism.

[0012] Furthermore, an oblong bolt hole is provided at one end of the T-shaped protrusion of the rail fixing mechanism, one end of the connecting rod is fixedly connected to the expansion joint template fixing plate, and the other end is fixed in the oblong bolt hole through a nut.

[0013] Furthermore, the stray terminal fixing mechanism is T-shaped, and a plurality of the oblong bolt holes are provided on the stray terminal fixing mechanism.

[0014] Furthermore, a screw rod is provided in the oblong bolt hole, and the screw rod is fixed in the oblong bolt hole through the nut.

[0015] Furthermore, the screw rod is connected to a stray terminal.

[0016] Furthermore, the T-shaped protruding portion of the stray terminal fixing mechanism is embedded in the end portion of the connecting plate.

[0017] Furthermore, a plurality of the oblong bolt holes are provided on the connecting plate, one end of the connecting rod is fixedly connected to the expansion joint template fixing plate, and the other end is fixed in the oblong bolt hole through the nut.

[0018] Furthermore, the expansion joint template fixing plate is square or circular.

[0019] Furthermore, the connecting rod is connected to the expansion joint template fixing plate by threaded connection or welding.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] The integrated fixing device for stray terminals and expansion joint templates designed in the utility model can effectively solve the problem that stray terminals are buried in the ballast bed, tilted or higher than the ballast bed surface while saving construction space. The lateral and vertical positions of the stray terminals can be accurately controlled through the laterally adjustable position mechanism and the stray terminal fixing mechanism, and the problem of skewness and misalignment of the expansion joints at the ends of the ballast bed plates is solved. The construction position of the expansion joints is accurately controlled to ensure that the expansion joints are strictly perpendicular to the ballast bed surface, thereby improving the construction quality of the track structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic structural diagram of an integrated fixing device for a subway stray terminal and an expansion joint template according to an embodiment;

[0024] Figure 2 yes Figure 1 A top view of the middle rail fixing mechanism;

[0025] Figure 3 yes Figure 1 A side view of the middle rail fixing mechanism;

[0026] Figure 4 yes Figure 1 A side view of the connecting plate;

[0027] Figure 5 yes Figure 1 A top view of the stray terminal fixing mechanism;

[0028] The symbols in the figure are:

[0029] 1-rail fixing mechanism, 2-connecting plate, 3-connecting rod, 4-stray terminal fixing mechanism, 5-laterally adjustable position mechanism, 6-screw, 7-nut, 8-expansion joint template fixing plate, 9-connecting screw. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In a specific implementation, the direction parallel to the connecting plate is set as the horizontal direction, the direction parallel to the stray terminal fixing mechanism is set as the vertical direction, and the direction parallel to the connecting rod is set as the vertical direction.

[0034] Example:

[0035] like Figure 1-Figure 5 As shown, the utility model provides an integrated fixing device for stray terminals and expansion joint templates for subways, the device comprising a rail fixing mechanism 1, a connecting plate 2, a connecting rod 3, a stray terminal fixing mechanism 4, a laterally adjustable position mechanism 5 and an expansion joint template fixing plate 8.

[0036] The stray terminal fixing mechanism 4 and the expansion joint template fixing plate 8 are integrated into one body, and the entire device is fixed to the rail through the rail fixing mechanism 1, so as to achieve accurate positioning of the stray terminal and the expansion joint template, and ensure that the level and height of the entire device are consistent with the rail laying accuracy.

[0037] The bottom surface and inner side surface of the rail fixing mechanism 1 are in close contact with the top surface and side surface of the rail. The other side surface of the rail fixing mechanism 1 is connected to one end of the connecting plate 2 through a connecting screw 9. Different types of rail sections are used according to different lines. The other end of the connecting plate 2 is fixedly connected to the stray terminal fixing mechanism 4 through a laterally adjustable position mechanism 5.

[0038] The expansion joint template fixing plate 8 is fixedly connected to the connecting plate 2 and the rail fixing mechanism 1 respectively through the connecting rod 3.

[0039] In this embodiment, the rail fixing mechanism 1 is T-shaped, and a wedge-shaped groove is provided at the junction of the right side of the T and the connecting plate 2, and a raised wedge-shaped protrusion that fits with the wedge-shaped groove of the rail fixing mechanism 1 is provided at the junction of the left end of the connecting plate 2 and the rail fixing mechanism 1, which can realize lateral sliding, and the side of the connecting plate 2 is attached to the other side of the rail through the connecting screw 9.

[0040] An oblong bolt hole is provided at one end of the T-shaped protrusion of the rail fixing mechanism 1. The lower end of the connecting rod 3 is fixedly connected to the expansion joint template fixing plate 8, and the upper end is fixed in the oblong bolt hole through a nut 7 for fixing the expansion joint template between the rails.

[0041] Furthermore, the stray terminal fixing mechanism 4 is T-shaped, and the T-shaped protruding part of the stray terminal fixing mechanism 4 is embedded in the right end of the connecting plate 2. The stray terminal can be adjusted laterally through the laterally adjustable position mechanism 5. Two oblong bolt holes are vertically provided on the stray terminal fixing mechanism 4, which is convenient for adjusting the stray terminal along the line direction according to the position of different stray terminals on the track bed plate.

[0042] A screw rod 6 is provided in the oblong bolt hole of the stray terminal fixing mechanism 4 , and the screw rod 6 is fixed in the oblong bolt hole by a nut 7 .

[0043] The screw rod 6 is connected to the stray terminal, and the screw rod 6 can timely adjust the vertical position of the stray terminal through the nut 7 according to the position of the stray terminal buried in the roadbed.

[0044] Furthermore, the laterally adjustable position mechanism 5 can not only fix the stray terminal fixing mechanism 4, but also adjust the lateral position of the stray terminal fixing mechanism 4, thereby realizing the lateral adjustment of the stray terminal. The laterally adjustable position mechanism 5 is combined with the stray terminal fixing mechanism 4 to realize the two-way adjustment of the vertical and lateral positions of the stray terminals, and accurately locate the positions of the stray terminals.

[0045] Two oblong bolt holes are horizontally arranged on the connecting plate 2. The lower end of the connecting rod 3 is fixedly connected to the expansion joint template fixing plate 8, and the upper end is fixed in the oblong bolt hole through the nut 7, which is used to fix the expansion joint template from the rail to the roadbed.

[0046] The oblong bolt holes on the connecting plate 2 facilitate adjustment of the lateral position of the expansion joint template fixing plate 8, and the connecting rod 3 facilitates adjustment of the vertical position of the expansion joint template fixing plate 8.

[0047] In this embodiment, the expansion joint template fixing plate 8 is square. In other embodiments, the expansion joint template fixing plate 8 may be circular or other shapes. The expansion joint template fixing plate 8 is made of steel or cast iron.

[0048] The connecting rod 3 is connected to the expansion joint template fixing plate 8 by threaded connection or welding.

[0049] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. An integrated fixing device for stray terminals and expansion joint templates for subways, characterized in that: The device comprises a rail fixing mechanism (1), a connecting plate (2), a connecting rod (3), a stray terminal fixing mechanism (4), a laterally adjustable position mechanism (5) and an expansion joint template fixing plate (8); The stray terminal fixing mechanism (4) and the expansion joint template fixing plate (8) are integrated into one body, and the entire device is fixed on the rail through the rail fixing mechanism (1); The bottom surface and inner side surface of the rail fixing mechanism (1) are in close contact with the top surface and side surface of the rail, the other side surface of the rail fixing mechanism (1) is connected to one end of the connecting plate (2) via a connecting screw (9), and the other end of the connecting plate (2) is fixedly connected to the stray terminal fixing mechanism (4) via the laterally adjustable position mechanism (5); The expansion joint template fixing plate (8) is fixedly connected to the connecting plate (2) and the rail fixing mechanism (1) respectively via the connecting rod (3).

2. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 1 is characterized in that: The rail fixing mechanism (1) is T-shaped, and a wedge-shaped groove is provided on the side connected to the connecting plate (2), and a protruding wedge that fits with the wedge-shaped groove of the rail fixing mechanism (1) is provided on the side connected to the connecting plate (2) and the rail fixing mechanism (1).

3. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 2 is characterized in that: The rail fixing mechanism (1) has a T-shaped protruding end with an oblong bolt hole, one end of the connecting rod (3) is fixedly connected to the expansion joint template fixing plate (8), and the other end is fixed in the oblong bolt hole via a nut (7).

4. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 3 is characterized in that: The stray terminal fixing mechanism (4) is T-shaped, and a plurality of the oblong bolt holes are provided on the stray terminal fixing mechanism (4).

5. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 3 is characterized in that: A screw rod (6) is provided in the oblong bolt hole, and the screw rod (6) is fixed in the oblong bolt hole through the nut (7).

6. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 5, characterized in that: The screw rod (6) is connected to the stray terminal.

7. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 1 is characterized in that: The T-shaped protruding portion of the stray terminal fixing mechanism (4) is embedded in the end of the connecting plate (2).

8. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 3 is characterized in that: The connecting plate (2) is provided with a plurality of oblong bolt holes, one end of the connecting rod (3) is fixedly connected to the expansion joint template fixing plate (8), and the other end is fixed in the oblong bolt hole via the nut (7).

9. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 1, characterized in that: The expansion joint template fixing plate (8) is square or circular.

10. The integrated fixing device for stray terminals and expansion joint templates for subways according to claim 3 or 8, characterized in that: The connecting rod (3) is connected to the expansion joint template fixing plate (8) by threaded connection or welding.