A platform door threshold structure that is easy to maintain

Abstract

The present invention provides a platform door threshold structure that is easy to maintain. The threshold structure includes a track side threshold and a platform side threshold. A platform door operation gap is left between the track side threshold and the platform side threshold. The track side threshold includes two or more track side thresholds that are close to and independently removable, and the platform side threshold includes two or more platform side thresholds that are close to and independently removable. Among them, the track side threshold and / or platform side threshold closest to the track or platform is a narrow threshold, and the track side threshold and / or platform side threshold close to the platform door is a wide threshold. Removing the wide threshold facilitates platform door maintenance. Therefore, when maintaining the parts at the bottom of the threshold, there is no need to cut the glue of the floor tiles and the threshold, which greatly improves maintenance efficiency and reduces maintenance costs.

Description

Technical Field

[0001] The invention relates to the field of rail transit platform doors, and in particular to a threshold and threshold maintenance of a rail transit platform door. Background Art

[0002] With the acceleration of urbanization and the development of urban agglomeration, the construction of high-speed railways, intercity railways, and urban railways, the personal safety requirements of passengers waiting on the platform at railway stations have increased. The installation of platform doors on railway station platforms can improve the safety of waiting on the platform. As a public safety protection device, the platform safety door is set along the edge of the platform to isolate the train from the platform waiting area. The safety door of the platform safety door opens after the train enters the station and stops steadily, and closes and locks before the train leaves the station.

[0003] Because of the special protective function of platform safety doors, they have been vigorously promoted. At present, there are still some difficult problems in the use and maintenance of platform safety doors. For example, at present, rail transit platform doors are all installed on the station platform, and the bottom threshold of the platform door is flush with the surface of the station decoration floor tiles, and the lower support part of the threshold and the electrification equipment are located below the finished surface of the decoration. When the equipment under the threshold of the platform safety door needs to be repaired, it is necessary to open the platform door threshold. In this process, because there is a gap between the platform door threshold and the decoration floor tiles, the gap between the equipment and the decoration floor tiles is beautified by gluing. Therefore, when the parts under the threshold need to be maintained, it is necessary to cut the glue again. The maintenance time and cost are very high, and the second cutting and gluing affects the appearance, causing serious troubles for platform management and maintenance personnel. Summary of the invention

[0004] In order to solve the maintenance difficulties of the existing platform door threshold structure, the present invention provides a platform door threshold structure that is easy to maintain. On the one hand, the platform door threshold has a certain damage self-healing function. At the same time, when maintaining the components under the threshold, there is no need to cut the seam glue of the floor tiles and the threshold, which greatly improves the maintenance efficiency and reduces the maintenance cost.

[0005] The present invention provides a platform door threshold structure that is easy to maintain, wherein the threshold structure includes a track side threshold and a platform side threshold, and a platform door operation gap is left between the track side threshold and the platform side threshold; the track side threshold includes two or more track side thresholds that are close to and independently removable, and the platform side threshold includes two or more platform side thresholds that are close to and independently removable; wherein the track side threshold and / or platform side threshold closest to the track or platform is a narrow threshold, and the track side threshold and / or platform side threshold close to the platform door is a wide threshold, and removing the wide threshold facilitates platform door maintenance.

[0006] The present invention provides an independent and detachable platform door threshold, and distinguishes between the side close to the track or platform and the side close to the platform door, so that the narrow threshold close to the track or platform side is relatively fixed. During maintenance, only the wide threshold needs to be removed, thereby avoiding the practical problem of damaging the seam glue during maintenance, causing a waste of resources, and requiring secondary gluing to affect the appearance.

[0007] Preferably, the platform door threshold structure provided by the present invention is characterized in that the gap between two or more track side thresholds and / or platform side thresholds that are close to and independently removable is filled with a temperature-sensitive deformable material; the deformable material is solid below 60°C, so that the two or more track side thresholds and / or platform side thresholds are in a tight state; when the deformable material becomes fluid after heating up, the two or more track side thresholds and / or platform side thresholds can be separated, which is convenient for disassembly and / or maintenance; when the temperature of the deformable material returns to below 60°C, the two or more track side thresholds and / or platform side thresholds return to a tight state; the deformable material includes a deformable liquid crystal material.

[0008] At room temperature, the deformable liquid crystal remains solid, and the thresholds are tightly connected to form a hard threshold structure. When maintenance is required, the threshold is heated to the clearing point temperature of the deformable liquid crystal, and the liquid crystal turns into a fluid state, and one or more thresholds can be removed from the whole. When the threshold is replaced or repaired and cooled to room temperature, the liquid crystal re-solidifies, and the thresholds on the track side and / or the platform side are tightly reassembled to form a complete threshold.

[0009] Preferably, in the platform door threshold structure provided by the present invention, the gap between the track side threshold and the platform side threshold is fixed.

[0010] Preferably, the platform door threshold structure provided by the present invention, wherein the upper surface of the track side threshold and / or the platform side threshold is a base layer of metal, concrete and / or decorative plate, with built-in shape memory alloy wire and / or shape memory alloy film, and / or strain sensor; the lower surface of the track side threshold and / or the platform side threshold is a load-bearing plate, including a load-bearing structural carbon steel plate; the upper surface and the lower surface are fastened together, and the fastening connection includes one or more of fastener connection, welding, and adhesive connection, wherein the fastener includes one or more of bolts, studs, screws, nuts, self-tapping screws, wood screws, washers, retaining rings, pins, rivets, assemblies and / or connecting pairs, welding nails.

[0011] In the present invention, the shape memory alloy wire can be evenly distributed in the substrate layer in a grid shape, and the shape memory alloy film can be distributed in the substrate layer in a fragmented manner. Under normal circumstances, the alloy wire or the alloy film is in a deformed state. Once the threshold is cracked or damaged, along with the heating of the above-mentioned liquid crystal material during maintenance, the alloy wire or the alloy film is restored to a memory shape through electric heating, thereby closing the crack and restoring the original strength. At the same time, the strain sensor monitors the damaged area in real time, and piezoelectric ceramics can be used as sensors to detect the strain signal generated by the impact, thereby monitoring the threshold structure condition in real time. This design gives the threshold a certain toughness and self-repairing ability without replacing the overall structure.

[0012] Preferably, the platform door threshold structure provided by the present invention, wherein the shape memory alloy wire and / or the shape memory alloy film are uniformly distributed in the base layer, are in a deformed state below 60°C, and restore the memory shape after heating to produce a self-healing effect; the shape memory alloy wire and / or the shape memory alloy film include one or more of Au-Cd, Ag-Cd, Cu-Zn, Cu-Zn-Al, Cu-Zn-Sn, Cu-Zn-Si, Cu-Sn, Cu-Zn-Ga, In-Ti, Au-Cu-Zn, NiAl, Fe-Pt, Ti-Ni, Ti-Ni-Pd, Ti-Nb, U-Nb and / or Fe-Mn-Si.

[0013] Preferably, in the platform door threshold structure provided by the present invention, when the track side threshold and / or the platform side threshold is damaged, a signal is sent via the strain sensor to guide manual and / or automatic temperature rise control. Through manual and / or automatic temperature rise control, the self-healing function of the threshold can be realized, and the removal of the threshold during manual maintenance is convenient.

[0014] Preferably, in the platform door threshold structure provided by the present invention, the threshold structure is installed on the mounting groove, and the mounting groove includes a U-shaped mounting groove; the mounting groove is fastened to the lower surface of the track side threshold and / or the platform side threshold. The structure of the mounting groove avoids the problem of uneven threshold structure and unstable installation.

[0015] Preferably, the platform door threshold structure provided by the present invention, wherein the track side threshold and / or the platform side threshold is fixed to the threshold support column through the mounting groove; the lower part of the threshold support column is connected to the civil engineering connection base plate and fixed to the civil engineering structure. The design of the threshold support column plays a supporting role, so that the platform door threshold is level with the ground, and also reserves space for the electrification equipment of the platform door under the threshold. In one embodiment of the present invention, the track side threshold and the platform side threshold are fixed on the same civil engineering connection base plate, so that the track side threshold and the platform side threshold maintain a relatively fixed gap.

[0016] Preferably, in the platform door threshold structure provided by the present invention, a mud guard is fixed between the narrow threshold and the track and / or the platform. The design of the mud guard prevents sand and stones used for decoration from entering the inner area of ​​the platform door threshold, and at the same time, a gap for gluing is left between the narrow threshold on the track side, the narrow threshold on the platform side and the decorative floor tiles of the track or the platform, and a beauty sealant is applied after installation to meet the requirements of the platform's aesthetics.

[0017] Preferably, in the platform door threshold structure provided by the present invention, when the platform door is repaired, the narrow threshold is not disassembled, and the wide threshold is moved and / or restored for repair. When the platform door equipment is later maintained on other parts below the threshold, the track side wide threshold and the platform side wide threshold can be removed for maintenance work, and after the maintenance is completed, the track side wide threshold and the platform side wide threshold are installed back to their original positions, without the need to cut and glue the original seam glue again.

[0018] Therefore, the present invention provides an easy-to-maintain platform door threshold structure, which can realize the automatic control and self-healing function of threshold repair, and is easy to disassemble without affecting the overall performance and appearance. It is easy to use and has greatly improved the traditional platform door threshold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a schematic side view of a door sill structure according to an embodiment of the present invention;

[0021] Figure 2 is a schematic top view of the structure of the threshold portion of an embodiment of the present invention;

[0022] Figure 3 Schematic diagram of a carbon steel plate of a threshold load-bearing structure according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of a threshold support column according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] Track side narrow threshold 1; track side wide threshold 2; platform door side narrow threshold 3; platform side wide threshold 4; threshold support columns 5 and 5'; civil engineering connecting base plate 6; mudguard 7; decorative floor tiles 8; seam glue 9; other parts under the threshold 10; U-shaped mounting grooves 11 and 11'. DETAILED DESCRIPTION

[0026] In order to further illustrate the present invention, embodiments are given below. It should be pointed out that these embodiments are purely illustrative. The purpose of providing these embodiments is to fully illustrate the significance and content of the present invention, but the present invention is not limited to the scope of the embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] Example 1

[0028] The present invention provides a platform door threshold structure that is easy to maintain, wherein the threshold structure includes a track side threshold and a platform side threshold, a platform door operation gap is left between the track side threshold and the platform side threshold, and the gap between the track side threshold and the platform side threshold is fixed. The threshold structure is installed on a mounting groove, and the mounting groove includes a U-shaped mounting groove; the mounting groove is fastened to the lower surface of the track side threshold and / or the platform side threshold. The track side threshold and / or the platform side threshold are fixed to the threshold support column 5 through the mounting groove; the lower part of the threshold support column 5 is connected to the civil engineering connection bottom plate 6 and fixed to the civil engineering structure.

[0029] The track side threshold includes two or more track side thresholds that are close to each other and can be removed independently, and the platform side threshold includes two or more platform side thresholds that are close to each other and can be removed independently; among them, the track side threshold and / or platform side threshold closest to the track or platform is a narrow threshold, and the track side threshold and / or platform side threshold close to the platform door is a wide threshold, and removing the wide threshold facilitates the maintenance of the platform door.

[0030] The gap between two or more track-side thresholds and / or platform-side thresholds that are close and can be disassembled independently is filled with a temperature-sensitive deformable material; the deformable material is solid below 60°C, so that the two or more track-side thresholds and / or platform-side thresholds are in a tight state; when the deformable material is heated and becomes fluid, the two or more track-side thresholds and / or platform-side thresholds can be separated, which is convenient for disassembly and / or maintenance; when the temperature of the deformable material returns to below 60°C, the two or more track-side thresholds and / or platform-side thresholds return to a tight state; the deformable material includes a deformable liquid crystal material. A fender 7 is fixed between the narrow threshold and the track and / or platform. When repairing the platform door, the narrow threshold is not removed, and the wide threshold is moved and / or restored for repair.

[0031] In one embodiment, the upper surface of the track side threshold and / or the platform side threshold is a metal, concrete and / or decorative plate substrate, with built-in shape memory alloy wire and / or shape memory alloy film, and / or strain sensor. The lower surface of the track side threshold and / or the platform side threshold is a load-bearing plate, including a load-bearing structural carbon steel plate; the upper surface and the lower surface are fastened and connected, and the fastening connection includes one or more of fastener connection, welding, and adhesive connection, wherein the fastener includes one or more of bolts, studs, screws, nuts, self-tapping screws, wood screws, washers, retaining rings, pins, rivets, assemblies and / or connection pairs, welding nails.

[0032] The shape memory alloy wire and / or shape memory alloy film are evenly distributed in the substrate layer, and are in a deformed state below 60°C. After heating, they recover the memory shape and produce a self-healing effect. The memory alloy system includes one or more of Au-Cd, Ag-Cd, Cu-Zn, Cu-Zn-Al, Cu-Zn-Sn, Cu-Zn-Si, Cu-Sn, Cu-Zn-Ga, In-Ti, Au-Cu-Zn, NiAl, Fe-Pt, Ti-Ni, Ti-Ni-Pd, Ti-Nb, U-Nb and / or Fe-Mn-Si. When the track side threshold and / or the platform side threshold are damaged, a signal is sent through the strain sensor to guide manual and / or automatic temperature control. Through temperature control, not only the self-healing function of the threshold is realized, but also the removal and maintenance of the threshold are convenient.

[0033] Example 2

[0034] like Figure 1 As shown in the figure, a platform door threshold structure that is easy to maintain is composed of a track side threshold and a platform side threshold. A certain gap is left between the track side threshold and the platform side threshold, and this gap serves as a movement channel for the door body. The track side threshold is composed of a track side narrow threshold 1 and a track side wide threshold 2. A layer of deformation liquid crystal material is contained between the track side narrow threshold 1 and the track side wide threshold 2. At room temperature, the deformation liquid crystal remains solid, and the narrow threshold and the wide threshold are tightly connected to form a hard threshold structure. When maintenance is required, the threshold is heated to the clearing point temperature of the deformation liquid crystal (about 60-80℃), the liquid crystal changes to a flowing state, and the wide threshold can be removed from the whole. When the threshold is replaced or repaired and cooled to room temperature, the liquid crystal re-solidifies, and the narrow threshold and the wide threshold are tightly reorganized to form a complete threshold.

[0035] The surface of the threshold is a stainless steel sheet or other decorative plate base layer, with built-in shape memory alloy wire and strain sensor, and the memory alloy system is Cu-Zn-Al. The shape memory alloy wire is evenly distributed in the base layer in a grid shape. Under normal circumstances, the alloy wire is in a deformed state. For example, at room temperature, the shape memory alloy remains in a solid state to provide sufficient strength. Once the threshold is cracked or damaged, when maintenance is required, the threshold is heated to its shape memory alloy reverse phase transition temperature, and the alloy wire is restored to its memory shape by heating, thereby closing the crack and restoring the original strength. At the same time, the strain sensor monitors the damaged area in real time. For example, piezoelectric ceramics are used as sensors to detect the strain signal generated by the impact, thereby monitoring the threshold structure in real time. Below the stainless steel sheet is a load-bearing structural carbon steel plate, and the stainless steel sheet is fixed to the load-bearing structural carbon steel plate by bolts.

[0036] When the track side threshold and / or platform side threshold is damaged, the strain sensor sends a signal to guide manual and / or automatic temperature control. By electrically heating the threshold, for example, heating the threshold to 60-80°C, on the one hand, the threshold itself has self-healing properties and can repair surface damage by itself; on the other hand, the deformation of the shape-shifting liquid crystal makes the threshold detachable, which is convenient for repairing the electrical equipment under the threshold. This design gives the threshold a certain toughness and self-repairing ability, and at the same time facilitates the repair of the electrical equipment under the threshold without replacing the overall structure.

[0037] like Figure 1 , 2 As shown, the U-shaped mounting grooves 11 and 11' are welded to the lower part of the carbon steel plate of the sill load-bearing structure, and a larger round hole or a large waist hole is provided in the carbon steel plate of the load-bearing structure directly above the U-shaped mounting grooves 11 and 11'. The mounting bolts can pass through the round hole or the large waist hole to connect the U-shaped mounting grooves 11 and 11' to the sill support columns 5 and 5' respectively.

[0038] like Figure 1 , 3 As shown, the narrow threshold 1 on the track side and the wide threshold 2 on the track side are fixedly connected to the same threshold support column 5, and can be independently disassembled and closely attached together.

[0039] like Figure 1 , 4 The threshold support column 5 shown has a threaded hole at the top for connection with the threshold, and a round hole at the bottom for connection with the civil engineering connection base plate 6 through bolts. The civil engineering connection base plate 6 is fixed to the civil engineering structure through bolts.

[0040] like Figure 1As shown, the platform side threshold is composed of a narrow platform side threshold 3 and a wide platform side threshold 4. The surface of the narrow platform side threshold 3 and the wide platform side threshold 4 is a stainless steel sheet or other decorative plate. Below the stainless steel sheet is a load-bearing structural carbon steel plate. The stainless steel sheet is fixed to the load-bearing structural carbon steel plate by bolts.

[0041] like Figure 1 , 3 As shown, the narrow platform side threshold 3 and the wide platform side threshold 4 are fixedly connected to the same threshold support column 5', which can be independently disassembled and tightly attached together. The threshold support column 5' has a threaded hole at the top to connect with the threshold, and a round hole at the bottom to connect with the civil engineering connection bottom plate 6 through bolts, and the civil engineering connection bottom plate 6 is fixed to the civil engineering structure through bolts.

[0042] like Figure 1 As shown, the threshold support column 5 connected to the track side threshold and the threshold support column 5' connected to the platform side threshold are fixed on the same civil engineering connection bottom plate 6, so that the track side threshold and the platform side threshold maintain a relatively fixed gap.

[0043] like Figure 1 As shown, after the threshold is installed, a mudguard 7 is fixed to the edges of the narrow threshold 1 on the track side and the narrow threshold 3 on the platform side to prevent sand and stones used for decoration from entering the inner area of ​​the platform door threshold. A gap for gluing is left between the narrow threshold 1 on the track side, the narrow threshold 3 on the platform side and the decorative floor tiles 8, and beautifying glue 9 is applied after the installation is completed.

[0044] like Figure 1 As shown, when the platform door equipment needs to maintain other components 10 at the lower part of the threshold at a later stage, the track side width threshold 2 and the platform side width threshold 4 can be removed for maintenance work. After the maintenance is completed, the track side width threshold 2 and the platform side width threshold 4 are installed back to their original positions, and there is no need to cut the original seam glue.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A platform door threshold structure that is easy to maintain, characterized in that: The threshold structure includes a track side threshold and a platform side threshold, and a platform door operation gap is left between the track side threshold and the platform side threshold; the track side threshold includes a plurality of track side thresholds that are close and independently removable, and the platform side threshold includes a plurality of platform side thresholds that are close and independently removable; wherein the track side threshold and / or the platform side threshold closest to the track or platform is a narrow threshold, and the track side threshold and / or the platform side threshold close to the platform door is a wide threshold, and disassembling the wide threshold facilitates the maintenance of the platform door; The gaps between the multiple track side thresholds and / or platform side thresholds that are close to each other and can be removed independently are filled with a temperature-sensitive deformable material; the deformable material is solid below 60°C, so that the multiple track side thresholds and / or platform side thresholds are in a tight state; when the deformable material becomes fluid after heating up, the multiple track side thresholds and / or platform side thresholds can be separated, which is convenient for disassembly and / or maintenance; when the temperature of the deformable material returns to below 60°C, the multiple track side thresholds and / or platform side thresholds return to a tight state; the deformable material includes a deformable liquid crystal material.

2. The platform door threshold structure according to claim 1, characterized in that: The gap between the track side threshold and the platform side threshold is fixed.

3. The platform door threshold structure according to claim 1, characterized in that: The upper surface of the track side threshold and / or the platform side threshold is a base layer of metal, concrete and / or decorative plate, with built-in shape memory alloy wire and / or shape memory alloy film, and / or strain sensor; the lower surface of the track side threshold and / or the platform side threshold is a load-bearing plate, including a load-bearing structural carbon steel plate; the upper surface and the lower surface are fastened together, and the fastening connection includes one or more of fastener connection, welding, and adhesive connection, wherein the fastener includes one or more of bolts, studs, screws, nuts, washers, retaining rings, pins, rivets, assemblies and / or connecting pairs, and welding nails.

4. The platform door threshold structure according to claim 3, characterized in that: The shape memory alloy wire and / or shape memory alloy film are uniformly distributed in the base layer, are in a deformed state below 60° C., and recover the memory shape after heating to produce a self-healing effect; the shape memory alloy wire and / or shape memory alloy film include one or more of Au-Cd, Ag-Cd, Cu-Zn, Cu-Zn-Al, Cu-Zn-Sn, Cu-Zn-Si, Cu-Sn, Cu-Zn-Ga, In-Ti, Au-Cu-Zn, NiAl, Fe-Pt, Ti-Ni, Ti-Ni-Pd, Ti-Nb, U-Nb and / or Fe-Mn-Si.

5. The platform door threshold structure according to claim 3, characterized in that: When the track side threshold and / or the platform side threshold is damaged, a signal is sent via the strain sensor to guide manual and / or automatic temperature control.

6. The platform door threshold structure according to claim 1, characterized in that: The threshold structure is installed on the mounting groove, which includes a U-shaped mounting groove; the mounting groove is fastened to the lower surface of the track side threshold and / or the platform side threshold; the track side threshold and / or the platform side threshold is fixed to the threshold support column through the mounting groove; the lower part of the threshold support column is connected to the civil engineering connection base plate and fixed to the civil engineering structure.

7. The platform door threshold structure according to claim 1, characterized in that: A mudguard is fixed between the narrow threshold and the track and / or platform.

8. The platform door threshold structure according to claim 1, characterized in that: When the platform door is repaired, the narrow threshold is not disassembled, and the repair is performed by moving and / or restoring the wide threshold.

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