CN215104292U - Track structure comprising telescopic floating plate connecting piece - Google Patents

Abstract

The utility model provides a track structure including telescopic floating plate connecting piece, include: the floating plate connecting structure comprises a plurality of floating plates (10) and floating plate connecting pieces (20) arranged between the floating plates, wherein the end parts of the floating plates (10) are provided with mounting holes (11); the floating plate connecting member (20) comprises a sleeve (21), a spring (22) and two connecting rods (23), wherein the spring (22) is arranged in the sleeve (21) and connected between the two connecting rods (23), one end of the connecting spring (22) of each connecting rod (23) is contained in the sleeve (21), the other end of the connecting spring is contained in the mounting hole (11), and the connecting rods (23) can move relatively along the sleeve (21).

Description

Track structure comprising telescopic floating plate connecting piece

Technical Field

The utility model relates to a building structure field especially relates to a track structure including telescopic floating plate connecting piece.

Background

In order to facilitate daily trips of people, urban rail transit often needs to pass through densely populated areas along the line, but a series of vibration and noise are generated in the running process of a train, and steel spring floating plate technology (hereinafter referred to as floating plates for short, which are the highest level vibration reduction measures at present) is usually adopted in the areas to ensure residents along the line not to be disturbed by the residents. The floating slab may be classified into a cast-in-place method and a prefabrication method according to a construction process. The cast-in-place construction method is that the working procedures of processing and connecting reinforcing steel bars, pouring concrete, maintaining and the like are carried out on a construction site. The prefabrication method is characterized in that the procedures are arranged and finished in a factory, and the prefabricated concrete is maintained to the designed strength and then is transported to a construction site for splicing. In order to satisfy the requirement of having sufficient compression space, there is clearance between floating slab and the lower part basis, simultaneously in order to guarantee whole track bed structural integrity and stability, need install the board end connecting piece between adjacent track bed (floating slab).

However, the current structure including the connector (see fig. 1) has the following problems:

1. the application of the plate end connector in the curved section is limited: because of the special mould is needed in the production of the prefabricated plate, in order to facilitate management and reduce cost, the model of the mould can be reduced as much as possible, so that the 'curve is replaced by straight curve' in a partial curve section, the sizes of the floating plate seams of the inner strand curve and the outer strand curve are different, and the plate end connecting piece can only be finely adjusted for better transferring load, so that the situation that the installation cannot be carried out or the stress state is poor even if the installation is carried out in a small-radius curve section can occur.

2. The weak link of board end is many, and the atress is uneven: the existing plate end connecting piece is either a shear plate or an underlying vibration isolator or the combination of the shear plate and the underlying vibration isolator, but no matter which structure has certain disadvantages. In the former, the main stressed part of the shear plate is a connecting bolt, and the plate end is a weak link, so that the shear plate bolt close to the plate end is loosened and screwed outwards or even broken. In the latter type, the vibration isolator is different from other built-in type vibration isolators (different in structural form and rigidity), so that the stress of the vibration isolator is uneven between the plate end and the plate, and the shearing plate bolt or the fastener elastic strip at the plate end is easy to break.

3. The plate end connecting piece has more parts, large maintenance amount and unfavorable evacuation: the slab end connecting piece is installed through the sleeve pipe of pre-buried in the prefabricated plate, and 8-12 sleeve pipes need be pre-buried to every set of connecting piece, and 4 sets of connecting pieces have been sewed up to every board, and pre-buried sleeve pipe is in large quantity, and the pre-buried piece takes place to damage in addition, is difficult to in time discover, and after the track operation, not only maintenance volume is big, but also has certain potential safety hazard. In addition, the overhead shear plate is higher than the surface of the ballast bed, so that the overhead shear plate is not beneficial to people evacuation, walking and the like.

Accordingly, there is a need for new techniques and methods to at least partially address the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

To shortcoming and weak point that exist among the existing structure, the utility model provides a track structure including telescopic floating plate connecting piece, a serial communication port, include:

according to an aspect of the utility model, a track structure including telescopic floating plate connecting piece is provided, a serial communication port, include: a plurality of floating plates (10) and floating plate connectors (20) arranged between the floating plates,

wherein, the end part of the floating plate (10) is provided with a mounting hole (11); the floating plate connecting member (20) comprises a sleeve (21), a spring (22) and two connecting rods (23), wherein the spring (22) is arranged in the sleeve (21) and connected between the two connecting rods (23), one end of the connecting spring (22) of each connecting rod (23) is contained in the sleeve (21), the other end of the connecting spring is contained in the mounting hole (11), and the connecting rods (23) can move relatively along the sleeve (21).

According to the utility model discloses an embodiment is equipped with the elastic material layer in mounting hole (11).

According to the utility model discloses an embodiment, connecting rod (23) are provided with blind hole or foraminiferous baffle (24) on the part outside sleeve pipe (21).

According to the utility model discloses an embodiment, under the spring is in normal condition, blind hole or foraminiferous baffle (24) are greater than the maximum compression volume of spring (22) apart from sleeve pipe (21) distance.

According to an embodiment of the invention, at least two mounting holes (11) are formed on each end of the floating plate (10).

According to an embodiment of the invention, the depth of the connecting mounting hole (11) is larger than the maximum compression of the spring (22).

According to the utility model discloses an embodiment, the tip of floating plate (10) still is provided with buried sleeve (12).

According to the utility model discloses an embodiment, the track structure including telescopic floating plate connecting piece still includes and covers (30) with fixed ditch cover plate (12) of buried sleeve (12) for the clearance between the sealed floating plate (10) of lid.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an inside spring of length accessible of floating slab connecting piece adjusts, can adapt to different radial line conditions in a flexible way, especially can adapt to the different board seams of curve inside and outside, and other board end connecting pieces adjustable volume are little at present, and the installation difficulty of little radius curve section.

2. The telescopic floating plate connecting piece greatly reduces the number of embedded sleeves while realizing the adjustment of the plate joint, reduces the workload of operation maintenance, and compared with the existing plate end connecting piece, the telescopic floating plate connecting piece also has the advantages of good stress state, replaceable property and the like.

3. The telescopic floating plate connecting piece is positioned on the side surface of the precast slab (floating plate), and after the water channel cover plate is arranged above the telescopic floating plate connecting piece, the inner side and the outer side of the steel rail do not have any structure higher than a ballast bed, so that the safety and the comfort of personnel walking and quick evacuation are improved. The existing precast slab adopts an upper-arranged shear plate higher than a bed surface, and the precast slab is generally short in length and high in installation density, so that people are easy to trip in the walking process, and certain potential safety hazards exist.

4. The prefabricated slab adopting the telescopic floating slab connecting piece has relatively large slab joint space, and provides a large operating space for a ditch cleaning tool. The plate seam of the existing prefabricated plate is usually 30mm, and a common ditch cleaning tool is difficult to implement.

Drawings

FIG. 1 is a schematic structural view of a track structure including a plate end connector according to the prior art;

fig. 2 is a schematic structural view of a floating plate connection according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a track structure including a retractable floating plate connection according to an embodiment of the present invention;

fig. 4 is a schematic top view of a track structure including a retractable floating plate connection according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, which are intended to illustrate the principles of the invention and not to limit the invention.

Fig. 2 is a schematic structural view of a floating plate connector according to an embodiment of the present invention. Referring to fig. 2, the floating plate link 20 of the present embodiment may include a sleeve 21, a spring 22, and two links 23. The spring 22 is disposed in the sleeve 21 and connected between two links 23, and one end of the link 23 connected to the spring 22 is received in the sleeve 21, and the other end is exposed outside the sleeve 21 and received in a mounting hole 11 (described later). There is a certain clearance between the sleeve and the link 23 so that the link 23 can move relatively along the sleeve 21, for example, when an external force is applied, the exposed part of the link 23 can move in the direction of the inside or outside of the sleeve, thereby compressing or extending the spring. A blind or perforated baffle 24 is provided on the portion of the connecting rod 23 outside the sleeve 21. This allows the link 23 to be pushed and pulled by a blind or apertured blind 24. In addition, the blind or perforated baffle 24 is spaced from the sleeve 21 by a distance greater than the maximum compression of the spring 22 in the normal condition of the spring, thus ensuring maximum compression. The various components of the floating plate connection 20 may be made of, for example, a steel material.

Fig. 3 is a schematic cross-sectional view of a track structure including a retractable floating plate connection according to an embodiment of the present invention; and fig. 4 is a schematic top view of a track structure including a retractable floating plate connection according to an embodiment of the present invention. Referring to fig. 3 and 4, the track structure of the embodiment may include a plurality of floating plates 10 and floating plate connectors 20 disposed between the floating plates. As shown, two mounting holes 11 are formed at the end of the floating plate 10 (although they may be provided as needed). The floating plate connector 20 is disposed between two opposite floating plates 10. The ends of the two links 23 of the floating plate connection 20 exposed outside the sleeve 21 are received in the mounting holes 11. In addition, the depth of the mounting hole is larger than the maximum compression amount of the spring 22, so that the spring in the connecting rod is prevented from falling off and slipping when being compressed to the minimum size. The cross section of the link 23 is the same as the mounting hole, and may be any shape such as a circle or a square. An elastic material such as a urethane material or the like may be further provided in the mounting hole for cooperating with the link 23 to achieve a more stable connection. In this way, the prefabricated plate units (floating plates 10) are connected and fixed through the floating plate connecting pieces 20 to form an integral stress structure.

According to the embodiment of the present invention, the end of the floating plate 10 may be further provided with a pre-buried sleeve 12 for fixing the gutter cover 30. The gutter cover 30 is used to cover the gap between the floating plates 10. The ditch cover plate is opened to observe the condition of the ditch (gap) and clean impurities in the ditch. After the ditch cover plate is installed, a smooth surface is formed on the upper surface of the prefabricated plate unit, and daily walking and evacuation of personnel are facilitated.

Exemplary construction methods of the present application are detailed below.

1. And constructing a tunnel base structure. The base structure can be assembled on site by adopting site construction or prefabricated structures. And carrying out surface cleaning, measurement of the prefabricated plate positioning base mark and the like on the base.

2. Each prefabricated plate (floating plate 10) is arranged to a designated position according to a design drawing for rough positioning.

3. And installing rail structures such as fasteners, steel rails and the like on the rail bearing platform of the precast slab.

4. And (5) installing an inner sleeve of the vibration isolator, and carrying out jacking operation on the precast slab. The precast slab is floated to a certain height through a jack, a leveling gasket is added between the inner sleeve and the outer sleeve, and the precast slab is floated to a designed elevation through at least one jacking operation.

5. And (5) carrying out fine adjustment on the precast slabs and the rails to ensure that the geometric shape and position of the steel rail meet the design requirements.

6. The worker clamps the inside of the hole of the baffle plate 24, compresses the spring 22 between the connecting rods 23, and compresses the length of the connecting rods to the minimum. The connecting rods are respectively installed in the installation holes at the end parts of the two prefabricated plates, the angle and the gap are adjusted in a curve ultrahigh section, the tool is loosened, the spring in the connecting piece rebounds, and the end part of the connecting rod 23 is tightly clamped with the elastic material in the installation hole.

7. The same procedure is used to install the links in other positions.

8. And (4) installing accessory parts such as a ditch cover plate 30, a sealing strip and the like.

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and those skilled in the art can make various changes and modifications without departing from the spirit of the present invention.

Claims (8)

1. A track structure including a retractable floating slab connection, comprising: a plurality of floating plates (10) and floating plate connectors (20) arranged between the floating plates,

wherein, the end part of the floating plate (10) is provided with a mounting hole (11); the floating plate connecting member (20) comprises a sleeve (21), a spring (22) and two connecting rods (23), wherein the spring (22) is arranged in the sleeve (21) and connected between the two connecting rods (23), one end of the connecting spring (22) of each connecting rod (23) is contained in the sleeve (21), the other end of the connecting spring is contained in the mounting hole (11), and the connecting rods (23) can move relatively along the sleeve (21).

2. Track structure comprising retractable floating plate connections according to claim 1, characterized in that a layer of elastic material is provided in the mounting holes (11).

3. A track structure comprising a telescopic floating plate connection according to claim 1, characterised in that the part of the connecting rod (23) outside the sleeve (21) is provided with blind or perforated baffles (24).

4. A track structure comprising a telescopic floating plate connection according to claim 3, characterised in that the blind or perforated blind (24) is at a distance from the end of the sleeve (21) greater than the maximum compression of the spring (22) when the spring is in an unstressed state.

5. The track structure comprising a telescopic floating plate connection according to claim 1, characterized in that at least two mounting holes (11) are formed on each end of the floating plate (10).

6. Track structure comprising a telescopic floating plate connection according to claim 1, characterized in that the depth of the mounting hole (11) is greater than the maximum compression of the spring (22).

7. The track structure comprising a telescopic floating plate connection according to claim 1, characterized in that the ends of the floating plate (10) are further provided with embedded sleeves (12).

8. The track structure including the retractable floating plate connector as claimed in claim 7, further comprising a gutter cover (30) fixed to the embedded sleeve (12) for covering a gap between the floating plates (10).

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