CN221320521U

CN221320521U - Directly spread track board

Info

Publication number: CN221320521U
Application number: CN202322706637.XU
Authority: CN
Inventors: 怯延峰; 艾永光; 艾紫光; 郭亚兵; 周健; 张祯搏
Original assignee: Hejian Yinlong Track Co ltd
Current assignee: Hejian Yinlong Track Co ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2024-07-12
Anticipated expiration: 2033-10-09

Abstract

The utility model relates to a straight track slab, which comprises a reinforced concrete track slab body, a support sleeve pre-embedded in the track slab body, and an adjustable lifting regulator arranged in the support sleeve. The regulator is a lifting screw, and the external thread of the lifting screw is matched with the internal thread of the supporting sleeve. The beneficial effects of the utility model are as follows: the utility model can realize the normal construction passing of the track slab in the laying, pouring and maintenance stages, equipment is not easy to crack and damage in the construction process, the problem of quick construction of the damping track slab of the urban rail transit rubber pad is successfully solved, and the construction quality and the construction efficiency of the track engineering are improved.

Description

Directly spread track board

Technical Field

The utility model belongs to the field of track slabs in track traffic engineering, and particularly relates to a straight track slab.

Background

At present, the urban rail transit damping track plate mainly adopts two types of rigid springs and rubber pads, and because the rigid springs can realize damping and quick construction, the damping and rubber pad damping track plate is well popularized, but the rigid spring track plate can only be used for speed per hour below 120 km, and the rigid springs are in fatigue failure after speed increasing and cannot be popularized. At present, all the subway shock absorption sections of the subway with the speed of 120 km/h or more adopt rubber pad shock absorption track plates, but the rubber pad shock absorption track plates have two problems in actual construction. Firstly, about twenty-eight days after self-compacting concrete is poured, load is not allowed to be born on the track slab, so that construction vehicles cannot pass, and construction progress is affected; second, the track board is easy damaged in fine setting ware bolt hole when laying the fine setting, can't promote comprehensively. There is a need for a new structure to solve the above problems.

Disclosure of Invention

In view of this, the present utility model aims to propose a direct-laying track slab that can achieve rapid construction laying.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

The utility model provides a straight track slab, includes reinforced concrete's track slab body and pre-buried support sleeve in the track slab body in advance, still includes and places the inside regulator that can adjust the lift of support sleeve.

Further, the regulator is a lifting screw, and the external thread of the lifting screw is matched with the internal thread of the supporting sleeve.

Further, the diameter of the head of the lifting screw is equal to or smaller than the diameter of the screw.

Further, the top surface of the head part is provided with a cross or a straight notch or a pit.

Further, the bottom of the supporting sleeve is also provided with a protective sleeve 9 made of rubber.

Further, a shock pad 4 is arranged at the bottom of the track plate body.

Further, the total number of the support sleeves is 8.

Further, the supporting sleeves are arranged in sequence of 2 x 4, corresponding to the installation positions of two steel rails on the track slab body, and one steel rail corresponds to 4 steel rails and is uniformly distributed.

Further, the main body of the supporting sleeve is of a cylinder structure with internal threads.

Furthermore, the upper end and the lower end of the main body are both provided with annular mounting fixing plates.

The utility model has the advantages and positive effects that: the technical method can realize normal construction passing of the track slab in the laying, pouring and curing stages, equipment is not easy to crack and damage in the construction process, the problem of quick construction of the damping track slab of the urban rail transit rubber pad is successfully solved, and the construction quality and the construction efficiency of the track engineering are improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only embodiments of the utility model and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the construction of the track slab body casting process of the present utility model;

FIG. 3 is a schematic view of a structure of the present utility model in which a shock pad is provided at the bottom of a track slab body;

FIG. 4 is a schematic view of the structure of the support sleeve of the present utility model with a protective sleeve disposed at the bottom;

FIG. 5 is a schematic diagram of the installation of the regulator of the present utility model;

FIG. 6 is a schematic diagram of the regulator of the present utility model after installation;

FIG. 7 is a schematic illustration of the structure of the evacuation regulator of the present utility model;

FIG. 8 is a schematic view of the mounting structure of the support sleeve and the regulator of the present utility model;

FIG. 9 is a top view of a support sleeve of the present utility model;

figure 10 is a schematic view of the mounting structure of the regulator and protective sleeve of the present utility model;

Fig. 11 is a top view of the regulator of the present utility model.

In the figure:

1-a track plate body; 2-supporting the sleeve; 3-regulator; 4-a shock pad; 5-self-compacting concrete

6-A base plate; 7-a track slab steel mould; 8-fixing bolts; 9-protective sleeve

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, based on the embodiments of the present utility model are within the scope of the protection of the present utility model, and the embodiments of the present utility model and the features of the embodiments can be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

In the following, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only illustrative, and should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and height should be included in actual fabrication.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

As shown in fig. 1, the utility model comprises a reinforced concrete track slab body 1 and a plurality of support sleeves 2 which are pre-embedded in the track slab body 1 in advance, wherein the total number of the support sleeves 2 is 8, the support sleeves are arranged according to the sequence of 2 x 4, the two support sleeves correspond to the installation positions of two steel rails on the track slab body 1, and one steel rail corresponds to 4 support sleeves and are uniformly distributed.

As shown in fig. 8 and 9, the main body of the support sleeve 2 is a cylindrical structure with internal threads, the upper end and the lower end of the main body are both provided with annular installation fixing plates with the outer diameter of 200mm and the inner diameter of 50mm, and reinforcing ribs are further arranged between the installation fixing plates and the outer wall of the main body. And the device also comprises an adjustor 3 which is arranged inside the support sleeve 2, wherein the external thread of the adjustor 3 is matched with the internal thread of the support sleeve 2. As shown in fig. 8 and 11, the adjuster 3 is a lifting screw, the diameter of the head of the lifting screw is equal to or smaller than that of the screw, and a cross or straight notch or pit is arranged on the top surface of the head, so that the rotation is facilitated. As shown in fig. 10, the bottom of the supporting sleeve 2 is further provided with a protective sleeve 9 made of rubber. The lifting screw is made of M50 finish-rolled screw thread steel, and the length of the lifting screw is 200mm.

The bottom of the track plate body is provided with a shock pad 4.

The method for paving the direct-paving track slab comprises the following steps:

Mounting a supporting sleeve, prefabricating a track plate, pasting a plate bottom shock pad, leaving a field, hoisting and placing the track plate on a base plate, mounting a regulator, finely adjusting the track plate, pouring self-compacting concrete, paving steel rails and buckling accessories while maintaining the self-compacting concrete, and lifting the regulator

The detailed process of the paving method is as follows:

1. support sleeve installation, track slab prefabrication and slab bottom shock pad pasting:

As shown in fig. 2, when prefabricating the track slab body 1, the support sleeve 2 is fixed on the track slab steel mould 7 by using the fixing bolts 8, and concrete casting is performed in the track slab steel mould 7, so that the support sleeve 2 with internal threads can be embedded in the track slab body 1. As shown in fig. 3, after the concrete of the track slab body 1 is solidified, the fixing bolts 8 are removed to release the mold, and the rubber shock pad 4 is stuck to the slab bottom of the track slab body 1.

The current prefabricated track boards mainly have two types of 3.6m and 4.8m, and specific model numbers are determined according to design drawings. The straight section uses the ultrahigh-free track boards, the curve section uses the ultrahigh-free track boards according to calculation, and the sequence and the direction of each track board need to be noted during installation.

2. Exiting:

To ensure continuous laying, the track slabs need to be transported to the site in advance for stacking. The track plate is numbered on the ground, the curve section is marked with an ultrahigh direction, and the track plate is not installed according to the number and the ultrahigh direction. The rail plates are placed on the rail car by the portal crane, the large numbers are placed on the lower layer in sequence, the small numbers are placed on the upper layer, so that the rail plates can be transported to a working surface to be unloaded in sequence, the positions of the plates are approximately arranged, and the distance for moving the plates during subsequent installation is reduced.

As shown in fig. 4, when the track slab body 1 is laid and stacked on site, a protective sleeve 9 made of rubber is placed at the bottom of the support sleeve 2.

3. Hoisting and placing the base plate:

After the concrete pouring of the base part is completed, a base plate 6 is formed, the central line of each track plate is measured, the cross-shaped ink lines are popped up in the middle of the base plate 6, and after the track plates are transported in place, the track plates are installed and adjusted according to the front and back cross-shaped ink lines and the central ink lines on the track plates.

4. Installing a regulator and finely adjusting a track plate:

As shown in fig. 5 and 6, the regulator 3 is placed inside the support sleeve 2 by means of threads, so that the bottom of the regulator 3 presses against the protective sheath 9, passing together through the shock pad 4, until it abuts against the base plate 6, or foundation, made of concrete. At this time, the 8 adjusters 3 are forced to directly support the weight of the entire track plate body 1. The height of the track plate body 1 can be finely adjusted to the right and left by adjusting the depth of 8 adjusters 3 (screwing support bolts for up-down adjustment and support during fine adjustment, with the maximum adjustable of 150 mm), so that the track plate is accurately positioned.

5. Pouring self-compacting concrete:

In the fine adjustment process of the track slab body 1, a counter-force frame and a formwork are installed on the upper portion of the track slab to be plugged, the feet of the counter-force frame are fixed with the base surface through foundation bolts, and the prefabricated track slab is jacked up by overlarge concrete pressure below the pouring process is prevented. At this time, the adjuster 3 is stressed to support the whole track slab body 1, and self-compacting concrete is poured from a pouring hole reserved on the track slab body 1.

Before pouring the self-compacting concrete, the self-compacting concrete is carefully and thoroughly confirmed with a design and a concrete factory, the self-compacting concrete is prepared, a uncovering test is carried out after the mixture is prepared, and after the self-compacting concrete is qualified in the test, the self-compacting concrete can be poured.

6. Laying steel rail and buckle fittings while maintaining self-compacting concrete:

The buckle fittings (iron pad, iron pad lower pad, screw spike, etc.) are mounted on the track plate body 1. After the track slab body 1 is installed and adjusted, the lower base plate of the steel rail is installed on the iron base plate, the steel rail is transported to a working surface by a rail car for laying rails, and the remaining buckle fittings (comprising elastic strips, gauge baffles and the like) are installed.

After the track laying is completed, rechecking the geometric dimension of the track, and adjusting individual points which do not meet the design requirement to enable the individual points to meet the design and specification requirements.

7. Lift adjuster

As shown in fig. 7, after the self-compacting concrete 5 reaches the target strength, the regulator 3 is lifted up by a certain distance or directly withdrawn, so that the self-compacting concrete 5 is directly stressed. The voids left by the regulator 3 have little effect on the overall strength.

When the track plate in the prior art is paved, the fine adjustment devices are required to be installed on the side surfaces of the track plates, four fine adjustment devices are arranged on the side surfaces of one track plate, and four compression bars are arranged on the track plate. The upper part of the track slab is stressed by the fine adjuster on the side surface, the sleeve pipe pre-embedded on the side surface of the track slab body supports the fine adjuster, the concrete at the pre-embedded sleeve pipe directly bears shearing force, and cracking and breakage are easy to occur. And a curing period of 28 days is required after the bottom of the rail plate is poured with self-compacting concrete, during which no stress is allowed on the rail plate.

In order to solve the defects that the construction speed of a reinforced concrete precast track slab of a ballastless track part of a track traffic engineering is low and a fine adjustment sleeve is cracked, the sleeve adjuster is pre-buried and installed on the track slab body, so that the track slab body is directly placed on a base plate for fine adjustment when being paved, a single adjuster can bear more than 50 kilonewtons of pressure without deformation, the lifting height is 0-150 mm, and the weight of the track slab body and the pressure from the upper part of the track slab are supported when the adjuster is paved. The self-compacting concrete can be poured for three days to install the paved steel rail and the installation fastener, and the mortar layer can be prevented from being damaged by a light construction vehicle. The stress on the upper part of the track slab is directly transmitted to the base plate (foundation) through the shock pad and the supporting regulator, so that the self-compacting concrete is protected from being damaged. And after the strength of the self-compacting concrete meets the standard requirement, lifting the regulator to bear the self-compacting mortar again. The stress of the track slab is transferred to the base plate (foundation) through the shock pad and the self-compacting concrete.

The technical method can realize normal construction passing of the track slab in the laying, pouring and curing stages, successfully solves the problem of quick construction of the damping track slab of the urban rail transit rubber pad, and improves the construction quality and the construction efficiency of the track engineering.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. A straight track laying board, characterized in that: the lifting-adjustable reinforced concrete track slab comprises a reinforced concrete track slab body (1) and a support sleeve (2) pre-buried in the track slab body (1), and further comprises a lifting-adjustable regulator (3) arranged inside the support sleeve (2).

2. The direct-laying track slab of claim 1, wherein: the adjuster (3) is a lifting screw, and the external thread of the lifting screw is matched with the internal thread of the supporting sleeve (2).

3. The straight track slab of claim 2, wherein: the diameter of the head of the lifting screw is equal to or smaller than that of the screw.

4. A direct-laying track slab according to claim 3, characterized in that: the top surface of the head part is provided with a cross or a straight notch or a pit.

5. The straight track slab according to claim 1 or 2, characterized in that: the bottom of the supporting sleeve (2) is also provided with a protective sleeve (9) made of rubber.

6. The straight track slab according to claim 1 or 2, characterized in that: the bottom of the track plate body (1) is provided with a shock pad (4).

7. The straight track slab according to claim 1 or 2, characterized in that: the total number of the support sleeves (2) is 8.

8. The straight track slab of claim 7, wherein: the supporting sleeves (2) are arranged in sequence of 2 x 4, correspond to the installation positions of two steel rails on the track slab body (1), and are uniformly distributed, wherein one steel rail corresponds to 4.

9. The straight track slab according to claim 1 or 2, characterized in that: the main body of the supporting sleeve (2) is of a cylinder structure with internal threads.

10. The direct-laying track slab of claim 9, wherein: annular mounting fixing plates are arranged at the upper end and the lower end of the main body.