Sealing device for floating slab ballast bed

Abstract

The utility model relates to the technical field of rail transit floating slab ballast bed vibration isolation, in particular to a floating slab ballast bed sealing device. The sealing device comprises a flexible protective apron board and clamping grooves formed in the two sides of the floating slab, a clamping strip is arranged on the surface of one side of the protective apron board, the outer contour shape of the clamping strip is matched with the inner contour shape of the clamping grooves, so that the protective apron board is installed on the two sides of the floating slab, and the sealing device further comprises an anti-falling structure of the protective apron board. And the anti-falling structure is arranged on the clamping groove and / or the clamping strip. The protective apron boards are installed on the two sides of the floating slab track bed through the clamping strips and / or the clamping grooves, existing interval point type fixing such as rivets, expansion bolts or embedded sleeves and bolts is avoided, thin steel plates or pressing strips used for pressing in an existing sealing device do not need to be used, material consumption is reduced, and cost is reduced; the utility model has the characteristics of simple structure, convenience in disassembly and assembly, low cost, no falling and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration isolation of rail transit floating plate roadbeds, in particular to a floating plate roadbed sealing device. Background Art

[0002] With social development and technological advancement, major cities are increasingly prioritizing the development of urban rail transit. Urban rail transit construction, particularly underground railways, has been rapidly expanding. Vibration isolation and reduction have always been core issues for urban rail transit. Floating slab trackbeds offer excellent vibration isolation and have been deployed on rail transit lines in numerous countries and cities. A floating slab trackbed consists of a floating slab, a vibration isolation device, a sealing device, and other ancillary devices. The vibration isolation device is mounted on a base. The floating slab is supported by the vibration isolation device. Gaps exist between the sides of the floating slab and the tunnel walls, as well as between the bottom of the floating slab and the base, to ensure the slab's buoyancy. During construction and actual operation, debris can easily fall into these gaps on the sides of the floating slab. Small debris can enter the gap between the floating slab and the base. This debris can support the floating slab, preventing it from floating normally, causing a short circuit and compromising the vibration isolation of the entire floating slab trackbed. Therefore, sealing devices are installed on both sides of the floating slab.

[0003] The existing sealing device is a flexible sealing strip. The flexible sealing strip is provided with mounting holes. These mounting holes are used to fix the flexible sealing strip to the side wall of the floating plate using bolts or rivets combined with steel sheet compression. The problems with the existing fixing method are that the installation is complicated and the construction progress is slow; when steel sheets are used for compression, the steel sheets are prone to rust and the cost is high; if steel sheets are not used for compression, the sealing strip is a local, spaced fixing point, and the sealing strip between adjacent mounting holes does not fit the floating plate, resulting in poor sealing effect; when rivets are used, the rivets are difficult to remove and cannot be reused after removal; when bolts and nuts are used for fixing, the threaded connection is prone to loosening and falling off under long-term vibration conditions.

[0004] How to solve the problems in fixing the existing floating slab roadbed sealing device and realize the simple installation, convenient disassembly and low cost of the sealing device has become a new need. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a floating plate roadbed sealing device which has the characteristics of simple structure, convenient assembly and disassembly, low cost and no falling off.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A floating slab roadbed sealing device includes a flexible protective skirt and a card slot arranged on both sides of the floating slab. A card strip is provided on the surface of one side of the protective skirt. The outer contour of the card strip matches the inner contour of the card slot, so that the protective skirt is installed on both sides of the floating slab, and the protective skirt is arranged between the two sides of the floating slab and the tunnel wall, or between the two sides of the floating slab and the base along the length direction of the floating slab. The sealing device also includes an anti-falling structure for the protective skirt, and the anti-falling structure is arranged on the card slot and / or the card strip.

[0008] Preferably, the anti-falling structure is a structure in which the cross section of the card slot is inclined toward the bottom surface of the floating plate and the angle between the transverse center line and the side wall of the floating plate is less than 90 degrees. The angle between the transverse center line of the cross section of the corresponding clip strip and the side of the protective skirt plate is equal to the angle between the transverse center line of the cross section of the card slot and the side wall of the floating plate. This structural solution utilizes the geometric shapes of the card slot and the card strip to restrict the card strip from falling out of the card slot. During installation, the card strip is knocked or inserted into the card slot along the inclination angle of the cross section of the card slot. After installation, when the protective skirt plate is subjected to a pulling force downward or / and outward from the floating plate, it can be blocked by the card slot, which can effectively prevent the protective skirt plate from falling off from the floating plate due to gravity, people stepping on it, objects pressing down, etc. When disassembly is required, it is only necessary to apply a force in the oblique upward direction of the floating plate to the protective skirt plate to pull the card strip out of the card slot.

[0009] Preferably, the anti-falling structure is a concave-convex structure provided on the inner surface of the card slot and / or the outer surface of the card strip. When using this solution, the concave-convex structure can be provided only on the upper side of the inner surface of the card slot, or only on the upper side of the outer surface of the card strip. In order to further improve the anti-falling effect, mutually cooperating concave-convex structures can also be provided on the upper side of the inner surface of the card slot and the upper side of the outer surface of the card strip. Furthermore, mutually cooperating concave-convex structures can also be provided on the upper and lower side surfaces of the inner cavity of the card slot and the upper and lower side surfaces of the outer surface of the card strip. The concave-convex structure can be a commonly used shape that can hinder relative movement, such as a sawtooth shape or a stepped shape, and can be integrally formed on the card slot and the card strip.

[0010] Preferably, the anti-dropout structure is a baffle disposed within the slot opening, inclined toward the slot bottom. Correspondingly, the connecting strip is also provided with a flexible lip that mates with the baffle. When the connecting strip attempts to drop out of the slot, the baffle and lip engage each other. Only when the outward pulling force reaches a certain level, causing the lip to flex and bend, can the connecting strip be released from the slot. Therefore, this structure also provides excellent anti-dropout effectiveness. Both the baffle and lip can be integrally formed with the slot and connecting strip, resulting in a simple and efficient production process.

[0011] Preferably, the slots are dovetail grooves pre-embedded within the floating slab, with their length matching the length of the slab. This allows the protective skirt to be continuously and evenly fixed to the slab along its length. The protective skirt is seamlessly attached to the slab's sides, resulting in a smoother, simpler slab bed and improved sealing.

[0012] Preferably, a side panel is provided at the opening of the card slot, and a mounting hole is provided on the side panel. The side panel and its mounting holes are used to fix the card slot during the production process of the floating plate. Specifically, when the floating plate is a prefabricated plate, the card slot can be fixed to the production mold of the floating plate through the side panel and its mounting holes. When the floating plate is a cast-in-place plate, the card slot can be fixed to the casting template of the floating plate through the side panel and its mounting holes. Furthermore, sealing grooves are provided on both sides of the card slot opening on the side panel. A sealing strip can be provided in the sealing groove to seal the card slot and prevent mortar and other debris from entering the card slot when the floating plate is cast. In addition, a protective plate can be installed on the side panel and its mounting holes to protect the card slot before the protective skirt is installed during the storage, transportation or on-site construction of the floating plate.

[0013] In summary, the floating slab roadbed sealing device of the present invention has the following beneficial effects compared with the prior art:

[0014] (1) The protective skirt is installed on both sides of the floating slab roadbed through snap-on strips and / or slots, avoiding the use of existing interval-type point fixation such as rivets, expansion bolts, or embedded sleeves and bolts. It is also unnecessary to use thin steel plates or pressure strips used for compression in existing sealing devices, thus reducing material consumption and costs. The protective skirt fits flatly, simply, and continuously on both sides of the floating slab roadbed, which is more visually beautiful and has a better sealing effect. In addition, during installation, only the protective skirt needs to be knocked or pressed, without the need for special tools. During disassembly, only the protective skirt needs to be pulled in a specific direction. Therefore, it has the characteristics of simple construction and high construction efficiency.

[0015] (2) The protective skirt is equipped with an anti-falling structure. There are many types of anti-falling structures. When applied, they can be flexibly selected and matched according to specific needs, and all of them can play an effective anti-falling effect. In addition, the anti-falling structure has a simple structure and is designed to be integrated with the card slot and protective skirt, and the production process is simple and efficient.

[0016] (3) The floating slab roadbed sealing device of the utility model does not damage the track base and tunnel wall. It is applicable to floating slab roadbeds in tunnels and elevated lines. It is also applicable to prefabricated and cast-in-place floating slabs. There are no requirements for the structural style of the floating slab. Therefore, it has the characteristics of strong applicability and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a top view of the installation effect of a floating plate roadbed sealing device of the utility model in Example 1.

[0018] Figure 2 for Figure 1 BB cross-sectional view.

[0019] Figure 3 This is a structural schematic diagram of a floating slab roadbed sealing device of the utility model in Example 2.

[0020] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0021] Figure 5 This is a structural schematic diagram of a floating slab roadbed sealing device of the utility model in Example 3.

[0022] Figure 6 It is a side structural diagram of the card slot structure in Example 3.

[0023] Figure 7 This is a structural schematic diagram of a floating slab roadbed sealing device of the utility model in Example 4. DETAILED DESCRIPTION

[0024] Example 1

[0025] The utility model discloses a floating plate roadbed sealing device, such as Figure 1 and Figure 2 As shown, it includes a flexible protective skirt 1 and a slot 21 provided on both sides of a floating plate 2. A snap-in strip 11 is provided on the surface of one side of the protective skirt 1. The outer contour of the snap-in strip 11 matches the inner contour of the slot 21. The floating plate 2 is supported on a base 4 via a vibration isolation device 3. The protective skirt 1 is provided between both sides of the floating plate 2 and the base 4 along the length of the floating plate. The anti-fall structure is a structure in which the cross section of the slot 21 is inclined toward the bottom surface of the floating plate 2 and the angle α between the transverse centerline and the side wall of the floating plate 2 is less than 90 degrees. The angle between the transverse centerline of the cross section of the snap-in strip 11 and the side of the protective skirt 1 is equal to the angle between the transverse centerline of the cross section of the slot and the side wall of the floating plate.

[0026] The anti-drop structure utilizes the geometric shapes of the slot and the connecting strip to restrict the strip from falling out of the slot. During installation, the connecting strip is knocked or inserted into the slot, following the inclination of the slot's cross-section. After installation, when the protective skirt is subjected to a pulling force downward and / or outward from the floating plate, it is blocked by the slot, effectively preventing the protective skirt from falling off the floating plate due to gravity, people stepping on it, or objects pressing down. To disassemble, simply apply force diagonally upward from the floating plate to the protective skirt to pull the connecting strip out of the slot.

[0027] The protective skirt 1 is a flexible plate and can be made of non-metallic materials such as rubber, plastic, canvas, and polyurethane. In this embodiment, rubber is used. The angle α between the transverse centerline of the cross-section of the clip strip 11 and the side of the protective skirt 1 is less than 90 degrees, and in this embodiment, it is 45 degrees. By adjusting this angle α, the anti-drop effect of the clip strip can be adjusted. Furthermore, based on the basic principles of this embodiment, a hard skeleton material can also be installed inside the connection between the clip strip and the protective skirt. This internal hard material increases the deformation strength and load-bearing capacity of the clip strip's base, thereby improving the anti-drop effect.

[0028] The floating plate roadbed sealing device in this embodiment uses a card slot and a card strip to fix the protective skirt plate to the side of the floating plate. At the same time, by setting the inclination angle of the card slot and the card strip, it is possible to prevent the protective skirt plate from falling off when subjected to a pulling force toward the outside of the floating plate and / or the bottom of the floating plate. It can effectively prevent the protective skirt plate from falling off the floating plate due to gravity, people stepping on it, objects pressing down, etc., thereby improving the reliability of the floating plate roadbed operation. At the same time, the floating plate roadbed sealing device is easy to install and disassemble, and is convenient for the replacement and maintenance of the sealing device. At the same time, it has a simple structure and low cost. In addition, compared with the existing sealing device, there is no need to use thin steel plates for compression, which reduces material consumption and reduces costs.

[0029] Example 2

[0030] like Figure 3 and Figure 4 As shown, the difference between this embodiment and the first embodiment is that the slot 21 is a dovetail slot pre-buried in the floating plate 2, and the shape of the connecting strip 11 matches the slot 21. The anti-drop structure is a concave-convex structure 12 provided on the upper surface of the inner cavity of the slot 21 and a concave-convex structure 12 provided on the outer surface of the connecting strip 11.

[0031] The concave-convex structure can be a commonly used shape that hinders relative motion, such as a sawtooth or stepped shape, and can be integrally formed with the slot and the connecting strip. In this embodiment, the concave-convex structure is a sawtooth structure, and this sawtooth structure is integrally provided with the slot and the connecting strip, and has the same length. The slot 21 can be made of materials such as metal, plastic wood, rubber, or engineering plastics (nylon, PVC, or ABS). In this example, aluminum alloy is used. Therefore, during production, the concave-convex structure 12 can be integrally formed on the slot 21 through an extrusion process. The connecting strip is made of rubber material, and the concave-convex structure 12 can be integrally formed on the connecting strip 11 through an extrusion process during production.

[0032] Based on the basic principles of this embodiment, the concave-convex structure can be provided only on the upper side of the inner surface of the card slot, or only on the upper side of the outer surface of the card strip. To further enhance the anti-drop effect, cooperating concave-convex structures can be provided on both the upper side of the inner surface of the card slot and the upper side of the outer surface of the card strip. Furthermore, cooperating concave-convex structures can be provided on both the upper and lower side surfaces of the inner surface of the card slot and the upper and lower side surfaces of the outer surface of the card strip.

[0033] When applied, such as Figure 3 As shown. The card slot 21 is pre-buried in the floating plate 2. During installation, it is only necessary to press or knock the connecting strip 11 of the protective skirt 1 into the inner cavity of the card slot 21 to fix the protective skirt. Finally, the other end of the protective skirt 1 is arranged to fit on the tunnel wall to complete the installation of the sealing device. During disassembly, it is only necessary to pull the connecting strip 11 of the protective skirt 1 out of the inner cavity of the card slot 21 to achieve the disassembly of the protective skirt. After the protective skirt 1 is fixed, its surface is flat and has no protrusions, which can effectively prevent or avoid the problems of the protruding structure when using a bolt structure that easily causes problems such as hanging on the trouser legs, scraping the legs, and hindering walking for the staff. The protective skirt 1 is flat and continuously fitted on the side of the floating plate 2, which is not only beautiful in appearance, but also has a better protective effect.

[0034] The sealing device in this embodiment has good protection effect, beautiful and smooth appearance, simple and efficient assembly and disassembly construction; the anti-falling structure has a simple structure and a simple production process, has a good anti-falling effect, and improves the reliability of the sealing device.

[0035] Example 3

[0036] like Figure 5 and Figure 6 As shown, this embodiment differs from the second embodiment in that a side plate 23 is further provided at the opening of the slot 21, and the side plate 23 is provided with mounting holes 24. The mounting holes 24 are symmetrically arranged on both sides of the opening of the slot 21. The side plate 23 is also provided with sealing grooves 25 on both sides of the opening of the slot 21.

[0037] The side panels 23 and their mounting holes 24 are used to fix the card slots during the production process of the floating slab. Specifically, when the floating slab is a prefabricated slab, the card slots can be fixed to the production mold of the floating slab through the side panels and their mounting holes. When the floating slab is a cast-in-place slab, the card slots can be fixed to the casting template of the floating slab through the side panels and their mounting holes. A sealing strip can be provided in the sealing groove 25 to seal the card slot 21 and prevent mortar and other debris from entering the card slot when the floating slab is cast. In addition, protective plates can be installed in the side panels and their mounting holes to protect the card slots before the protective skirt panels are installed during the storage, transportation or on-site construction of the floating slab to prevent foreign matter from entering the card slot and affecting the subsequent installation of the protective skirt panels.

[0038] The protective skirt panels of the sealing device in this embodiment are spliced ​​together using through-holes and ribbon stitching, resulting in a simple structure, easy operation, and high vertical fixing strength. The removable bolt structure uses only one row, reducing costs and simplifying installation and removal. The use of bolts in conjunction with threaded anchors or embedded components for securement, particularly when using embedded components, further simplifies the installation of the sealing device and increases construction speed.

[0039] Example 4

[0040] like Figure 7 As shown, the difference between this embodiment and the third embodiment is that the anti-drop structure is a baffle 22 disposed within the opening of the slot 21, inclined toward the bottom surface of the slot. Correspondingly, the connecting strip 11 is also provided with a flexible lip that cooperates with the baffle. The baffle 22 is integrally formed with the slot 21, and the flexible lip and connecting strip 11 are also integrally formed.

[0041] In practice, when the connecting strip attempts to fall out of the slot, the retaining plate and the flexible lip engage each other. Only when the outward pulling force reaches a certain level, causing the flexible lip to bend, can the connecting strip escape from the slot. Therefore, this structure also provides excellent anti-fallout effectiveness.

[0042] The baffle and the flexible lip can be integrally formed with the card slot and the card connection strip, and the production process is simple and efficient. Of course, the shapes of the baffle and the flexible lip are not limited to this, and the shapes and styles can be changed, which will not be shown here one by one.

Claims

1. A floating slab roadbed sealing device, comprising a flexible protective skirt and slots provided on both sides of the floating slab, a snap-fit ​​strip provided on one surface of the protective skirt, the outer contour of the snap-fit ​​strip matching the inner contour of the slot, so that the protective skirt is installed on both sides of the floating slab, characterized in that: The sealing device further comprises an anti-falling structure of the protective skirt plate, and the anti-falling structure is arranged on the card slot and / or the card strip.

2. The floating slab roadbed sealing device according to claim 1, characterized in that: The anti-falling structure is a structure in which the cross section of the card slot is inclined toward the bottom surface of the floating plate and the angle between the transverse center line and the side wall of the floating plate is less than 90 degrees. The corresponding angle between the transverse center line of the cross section of the card strip and the side surface of the protective skirt plate is equal to the angle between the transverse center line of the cross section of the card slot and the side wall of the floating plate.

3. The floating slab roadbed sealing device according to claim 1, characterized in that: The anti-falling structure is a concave-convex structure arranged on the inner surface of the card slot and / or the outer surface of the card strip.

4. The floating slab roadbed sealing device according to claim 1, characterized in that: The anti-falling structure is a blocking piece arranged inside the opening of the card slot and inclined toward the bottom surface of the card slot. Correspondingly, the connecting strip is also provided with a flexible lip piece that cooperates with the blocking piece.

5. The floating slab roadbed sealing device according to claim 1, characterized in that: The clamping slot is a dovetail slot pre-buried inside the floating plate, and the length of the clamping slot is adapted to the length of the floating plate.

6. The floating slab roadbed sealing device according to claim 1, characterized in that: A side plate is further provided at the opening of the slot, and a mounting hole is provided on the side plate.

7. The floating slab roadbed sealing device according to claim 6, characterized in that: The side plates are also provided with sealing grooves.

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