Railway roadbed surface sealing layer expansion joint slot mold convenient to disassemble and assemble

Abstract

A railroad bed surface sealing layer expansion joint slot mold convenient to disassemble and assemble is used for being installed on the surface of a railroad bed before a sealing layer is poured and comprises a base section formed by extending the cross section of the base section in the front-back linear direction, a lifting component is arranged on the upper portion of the base section, and the outer contour of the cross section of the base section is gradually narrowed from top to bottom. The foundation section is arranged on the surface of a railway roadbed before a sealing layer is poured, the outer contour of the cross section of the foundation section is gradually narrowed from top to bottom, and the lifting part is arranged at the upper part of the foundation section, so that the foundation section can be easily taken out after concrete of the sealing layer is hardened; the problems that time and labor are wasted and edges and corners of the periphery of a construction joint are lacked due to the fact that a traditional construction joint groove mold is violently dismantled are solved, installation and dismantling are convenient, repeated use can be achieved, the construction efficiency of the construction joint is greatly improved, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to an expansion joint slot mould for a closed layer on the surface of a railway roadbed which is easy to install and disassemble. Background Art

[0002] The surface of the railway roadbed is usually waterproofed and drained with a concrete sealing layer. The sealing range of the sealing layer is usually between the left and right line base plates of the ballastless track, and between the base plate of the ballastless track and the cable trough. Because the sealing layer is thin and long, a large number of horizontal and vertical expansion joints are usually set on the sealing layer to solve the problem of cracks in the sealing layer due to thermal expansion and contraction.

[0003] There are two traditional expansion joint construction techniques, one is the installation first and then disassembly technique, and the other is the pouring first and then cutting technique.

[0004] The installation-before-disassembly process is to assemble and reinforce the expansion joint slot plates on site at the designated location after the closed layer foundation is cleaned, and then pour the closed layer concrete on site. After the concrete strength meets the requirements, the expansion joint slot plates are removed, and finally the waterproof material is poured into the expansion joint. The biggest problem with this conventional construction process is that after the concrete hardens, the expansion joint slot plates are not easy to remove, and the slot plates buried in the concrete can only be removed by violent means, such as cutting or chiseling the slot plates and then removing them. This process is not only time-consuming and labor-intensive, but also very easy to cause damage to the concrete around the expansion joint during dismantling, resulting in quality problems such as missing edges and corners. In addition, reinforcement measures need to be taken for the installation of the expansion joint slot plates, and the damaged slot plates cannot be reused, which increases the labor, material, and machinery costs. At the same time, violent demolition operations increase the safety risks of workers in construction and have a greater impact on the environment.

[0005] The pour-first-then-cut process is to directly pour the closed layer concrete as a whole after the closed layer foundation is cleaned. After the concrete strength meets the requirements, a small cutting machine is used to cut the seams at the designated positions, and finally the waterproof material is poured into the expansion joints. Although this process solves the problem of violent formwork removal, it greatly increases the cost of machinery, and cutting narrow seams in the concrete is also time-consuming and labor-intensive. In addition, the closed layer poured as a whole will crack due to thermal expansion and contraction before cutting, resulting in a large number of cracks, and the construction quality is uncontrollable. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a railway roadbed surface closed layer expansion joint slot mould which is easy to disassemble and assemble.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a railway roadbed surface closed layer expansion joint slot mold that is easy to disassemble and assemble, which is used to be installed on the railway roadbed surface before pouring the closed layer, including a base section formed by extending the base section cross section along the front and rear straight line direction, and a lifting component is provided on the upper part of the base section, and the outer contour of the base section cross section gradually narrows from top to bottom. The utility model is installed on the railway roadbed surface before pouring the closed layer, and the outer contour of the base section cross section gradually narrows from top to bottom, and a lifting component is provided on the upper part of the base section, so that the utility model can be easily taken out after the closed layer concrete hardens, which solves the problem that the traditional violent removal of the construction joint slot mold is time-consuming and labor-intensive and causes the edges and corners around the construction joint to be missing. It is easy to install and disassemble and can be reused, which greatly improves the construction efficiency of the construction joint and reduces the construction cost.

[0008] In certain embodiments, the outer contour of the cross section of the base segment is an inverted trapezoid that is symmetrical in the left-right direction and is wider at the top and narrower at the bottom.

[0009] In certain embodiments, the base segment is hollow.

[0010] In certain embodiments, a relief groove is provided at the lower portion of the base section for being mounted on a shoulder cable.

[0011] In some embodiments, it also includes a telescopic section whose cross-section corresponds to the outer contour of the cross-section of the base section and also gradually narrows from top to bottom. The telescopic section is one section or multiple sections that slide and telescope with each other and fit together. One of the telescopic sections can slide and telescope with the base section.

[0012] In certain embodiments, a length positioning mechanism is provided between the base section and the corresponding telescopic section.

[0013] In some embodiments, the length positioning mechanism includes an adjustment button that is slidably and / or rotatably arranged on the upper part of the telescopic section, and a plurality of positioning holes distributed along the length direction of the base section. When the locking head at the end of the adjustment button is inserted into the corresponding positioning hole, the length between the base section and the telescopic section is positioned.

[0014] In certain embodiments, a scale extending up and down is respectively provided on the side of the base section and / or the corresponding telescopic section.

[0015] In certain embodiments, the telescopic joint is hollow.

[0016] The scope of the utility model is not limited to the technical solutions formed by the specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0017] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: the utility model is installed on the surface of the railway roadbed before pouring the sealing layer, and the outer contour of the cross-section of the foundation section gradually narrows from top to bottom, and a lifting component is arranged on the upper part of the foundation section, so that the utility model can be easily taken out by lifting it up after the concrete of the sealing layer is hardened, which solves the problem of traditional on-site assembly and reinforcement, violent dismantling that is time-consuming and labor-intensive, and causes missing edges and corners around the construction joint. It is easy to install and dismantle and can be reused, which greatly improves the construction efficiency of the construction joint and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a longitudinal section schematic diagram of the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0021] Figure 4 It is a cross-sectional schematic diagram of the limiting structure of the utility model;

[0022] Among them: 1. Base section; 2. Telescopic section; 3. Length positioning mechanism; 4. Lifting component; 5. Avoidance groove. DETAILED DESCRIPTION

[0023] like Figure 1 , 2 As shown, a railway roadbed surface closed layer expansion joint slot mold which is easy to disassemble and assemble is used to be installed on the railway roadbed surface before pouring the closed layer. The material is preferably stainless steel, including a base section 1 formed by extending the base section cross section along the front and rear straight directions. A lifting component 4 is provided on the upper part of the base section 1. In this embodiment, the lifting component 4 is a handle, and the outer contour of the base section cross section gradually narrows from top to bottom.

[0024] The utility model discloses can be easily taken out after the closed layer concrete hardens, solves the problem that the traditional violent removal of the construction joint groove mold is time-consuming and labor-intensive and causes the edges and corners around the construction joint to be missing, and is easy to install and dismantle and can be reused, which greatly improves the construction efficiency of the construction joint and reduces the construction cost.

[0025] The length of the expansion joint is usually 1.6m-1.9m, the width is usually 1.5cm-2.5cm, and the height is 10cm-15cm. Therefore, the width of the slot mold is 1.5cm-2.5cm, and the height is 15cm-20cm. The length can be directly adjusted by using a base section of the corresponding size, or a telescopic type consisting of a base section and an expansion joint can be used.

[0026] like Figure 2 , 3 As shown, the slot mold also includes a telescopic section 2 whose cross-section corresponds to the outer contour of the cross-section of the base section and also gradually narrows from top to bottom. The telescopic section 2 is a single section or multiple sections that slide, telescope and position with each other. A telescopic section 2 can slide and telescope with the base section 1, and a length positioning mechanism 3 is arranged between them. The cross-sectional dimension of the telescopic section 2 is slightly smaller than the cross-sectional dimension of the base section 1, so that the telescopic section 2 can move freely in the base section 1.

[0027] The outer contour of the cross section of the foundation section is an inverted trapezoid that is symmetrical in the left and right directions, wide at the top and narrow at the bottom. Both the foundation section 1 and the expansion section 2 are hollow, which reduces the dead weight, reduces the material cost, and can be easily removed from the closed layer of concrete. The bottom of the foundation section 1 is provided with an avoidance groove 5 for mounting on the shoulder cable.

[0028] The base section 1 or the telescopic section 2 is provided with a slot, and the position and shape of the slot of the base section 1 are reasonably designed according to the shape and size of the existing structure.

[0029] The length positioning mechanism 3 includes an adjustment button slidably arranged on the upper part of the telescopic joint 2 and a plurality of positioning holes distributed along the length direction of the base section 1. When the locking head at the end of the adjustment button is inserted into the corresponding positioning hole, the length between the base section 1 and the telescopic joint 2 is positioned, thereby realizing free adjustment and locking of the overall length of the slot mold, which is suitable for the construction of expansion joints of different lengths.

[0030] The sides of the base section 1 and the corresponding telescopic section 2 are respectively provided with scales extending up and down.

[0031] like Figure 4 As shown, in this embodiment, the adjustment button is a spring button, including a spring arranged on the telescopic joint 2, and a button arranged on the top of the spring. By pressing the button, the telescopic joint is pulled out or pressed back until the spring reaches the next positioning hole, and the button pops out automatically, thereby adjusting the overall length of the mold and locking the overall length of the mold.

[0032] In the specific operation, the expansion joint 2 is pulled out until the adjustment button is at the positioning hole position, and the adjustment button is automatically popped out by the spring and locks the expansion joint 2; the expansion joint slot mold is fixed on the avoidance slot of the shoulder cable through the card slot under the base section 1, and the installation and fixation of the expansion joint slot mold is completed; when pouring the closed layer concrete, the concrete around the expansion joint slot mold can be spread slowly by hand to reduce the impact of the concrete on the expansion joint slot mold, and the concrete top surface elevation is flush with the scale mark elevation on the side of the base section 1 and the expansion joint 2, so as to achieve precise control of the closed layer thickness, flatness, slope, etc. After the concrete strength of the closed layer meets the requirements, manually pull the handle to remove the expansion joint groove mold from the concrete. The expansion joint runs through from top to bottom, with straight and beautiful lines. Press the adjustment button to press back the expansion joint, and it can be moved to the next position for use. The removal of the expansion joint groove mold is completed, and the expansion joint mold can be used in a turnover manner. It is easy to install and disassemble, which improves construction efficiency, reduces material costs, improves the construction quality of expansion joints and closed layers, reduces the impact of construction on the environment, and ensures the safety of workers. At the same time, efficient and green construction technology reduces the impact of construction on the environment and the safety risks of workers.

[0033] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A railway roadbed surface closed layer expansion joint slot mold that is easy to disassemble and assemble, characterized in that : Used to be installed on the surface of a railway roadbed before pouring a sealing layer, comprising a foundation section (1) formed by extending the foundation section cross section along a front-to-rear straight line direction, a lifting component (4) being arranged on the upper part of the foundation section (1), and the outer contour of the foundation section cross section gradually narrows from top to bottom.

2. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 1 is characterized in that: The outer contour of the cross section of the base section is an inverted trapezoid that is symmetrical in the left-right direction and is wide at the top and narrow at the bottom.

3. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 1 is characterized in that: The base section (1) is hollow.

4. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 1 is characterized in that: The lower part of the base section (1) is provided with an avoidance groove for being mounted on a shoulder cable.

5. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to any one of claims 1 to 4, characterized in that: It also comprises a telescopic section (2) whose cross section corresponds to the outer contour of the cross section of the base section and also gradually narrows from top to bottom. The telescopic section (2) is a single section or a plurality of sections that are mutually slidably telescopically positioned and matched. One of the telescopic sections (2) can be slidably telescopically matched with the base section (1).

6. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 5 is characterized in that: A length positioning mechanism (3) is provided between the base section (1) and the corresponding telescopic section (2).

7. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 6 is characterized in that: The length positioning mechanism (3) comprises an adjustment button which is slidably and / or rotatably arranged on the upper part of the telescopic section (2) and a plurality of positioning holes distributed along the length direction of the base section (1). When the locking head at the end of the adjustment button is inserted into the corresponding positioning hole, the length between the base section (1) and the telescopic section (2) is positioned.

8. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 5 is characterized in that: A scale extending up and down is respectively provided on the side surface of the base section (1) and / or the corresponding telescopic section (2).

9. The easily disassembled expansion joint slot mold for the closed layer of the railway roadbed surface according to claim 1 is characterized in that: The telescopic joint (2) is hollow.

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