Platform pedal and its manufacturing equipment, subway tunnel evacuation platform and its manufacturing method

Abstract

The present invention provides a platform pedal, which is assembled by arranging a plurality of pedal unit plates; a through hole is provided on the pedal unit plate, a connecting rod is passed through the through hole, and the connecting rod sequentially connects the plurality of pedal unit plates; the pedal unit plate has a cavity, and the cavity is filled with a fireproof material. The present invention also provides a subway tunnel evacuation platform including the platform pedal. The present invention also provides a method for preparing the subway tunnel evacuation platform. The present invention also provides an apparatus for preparing the pedal unit plates in the platform pedal. The platform pedal of the present invention and the subway tunnel evacuation platform prepared therefrom can achieve seamless splicing, and the spliced ​​pedal platform has good flatness, and can also have good fireproof and heat-insulating effects.

Description

Technical Field

[0001] The invention relates to the technical field of railway track transportation, and in particular to a platform pedal and a manufacturing device thereof, a subway tunnel evacuation platform and a manufacturing method thereof. Background Art

[0002] With the development of my country's economy and urban construction, the urban population and the number of cities have increased dramatically, and urban transportation has attracted more and more attention. With its advantages of speed and comfort, the subway has gradually become an effective way to solve these urban traffic problems. Almost all cities have densely populated subway stations and subway trains. If you encounter terrorist attacks, power transmission system failures, power transmission cable failures, fires and other accidents while riding on a subway train, setting up unobstructed evacuation passages can quickly and orderly organize passengers to evacuate from the interval tunnel as soon as possible, eliminating or reducing casualties caused by unobstructed evacuation passages. China has learned relevant safety lessons at home and abroad, and installed an evacuation platform that leads to the station on the side wall of the interval tunnel. The installation height of the platform is consistent with the height of the station platform. In the event of an accident, the door can be opened immediately to organize passengers to evacuate from the evacuation platform to the nearest station.

[0003] However, existing evacuation platforms generally have the following problems: (1) The platform pedal surface of the evacuation platform is uneven or has gaps, which can easily cause passengers to fall during the evacuation process; (2) The platform pedal of the evacuation platform has poor fireproof and heat-insulating effects, which will affect the evacuation of passengers and even threaten the safety of passengers in the event of a fire.

[0004] Chinese patent CN109057858A discloses a subway evacuation platform made of lightweight basalt composite fiberboard, and specifically discloses that it is composed of an evacuation platform surface and a platform support frame, the evacuation platform surface is fixed on the platform support frame; the platform support frame includes a crossbar, a diagonal brace and a bearing member, the crossbar is connected to the diagonal brace through the bearing member, the platform surface includes an I-shaped pultruded profile and a pultruded connecting rod, and the multiple I-shaped pultruded profiles are arranged in sequence and connected and fixed in series by the pultruded connecting rod to form a grid-like flat plate. This patent uses I-shaped profiles to connect in series to form a grid-like pedal platform. Technicians have found that the grid-like pedal platform has gaps in the actual manufacturing process, which can easily get the heels stuck during the evacuation of passengers, causing falls. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a platform pedal and a subway tunnel evacuation platform prepared therefrom in view of the above-mentioned defects of the prior art, which can achieve seamless splicing, and make the spliced ​​pedal platform have better flatness and better fireproof and heat-insulating effects.

[0006] The present invention adopts the following technical solutions to solve the above technical problems:

[0007] The present invention provides a platform pedal, wherein the platform pedal is assembled by arranging a plurality of pedal unit plates;

[0008] The pedal unit plate is provided with a through hole, a connecting rod is passed through the through hole, and the connecting rod sequentially connects a plurality of the pedal unit plates;

[0009] The pedal unit plate has a cavity filled with a fireproof material.

[0010] In order to further optimize the technical solution of the platform pedal, the technical measures taken by the present invention also include:

[0011] Further, the pedal unit plate is in a rectangular shape, the width of the rectangular plate is 50mm-1200mm, and the height is 30mm-60mm; further, the platform pedal is composed of a plurality of rectangular pedal unit plates arranged and assembled in the width direction. The size of the platform pedal in the width direction of the pedal unit plate is 600mm-2000mm. It is understandable that the width and height of the pedal unit plate, as well as the size of the platform pedal assembled by arranging the pedal unit plates, can also be other sizes, which are adapted to the actual needs of the subway tunnel evacuation platform.

[0012] Furthermore, a U-shaped groove is provided on one side of the pedal unit plate, and a U-shaped tenon is provided on the other side, and the U-shaped tenon is suitable for fitting into the U-shaped groove; adjacent pedal unit plates are connected and assembled into a whole through the U-shaped groove and the U-shaped tenon.

[0013] Furthermore, the pedal unit plate is pultruded from a phenolic resin-based composite material, and the phenolic resin-based composite material is made of glass fiber yarn, glass fiber fabric and phenolic resin; alternatively, the phenolic resin-based composite material can also be made of other conventional phenolic resin-based composite materials with fire retardant properties.

[0014] Furthermore, the connecting rod is formed by pultrusion of a phenolic resin-based composite material; or the connecting rod may be made of a stainless steel material.

[0015] Further, the fireproof material is a solid plate-shaped fireproof material, and the shape of the solid plate is adapted to the shape of the cavity; the shape of the solid plate is preferably a rectangular parallelepiped, and the pedal unit plate has a rectangular parallelepiped cavity adapted to the shape of the solid plate, which is suitable for filling the rectangular parallelepiped fireproof material in the cavity;

[0016] Alternatively, the fireproof material may be selected from one or more of filamentous fireproof materials and powdery fireproof materials.

[0017] Furthermore, the fireproof material is an inorganic fireproof material. It is understandable that the fireproof material can also be other conventional fireproof materials with fireproof properties.

[0018] Furthermore, there are a plurality of cavities, and the plurality of cavities are respectively filled with the fireproof material.

[0019] Furthermore, there are a plurality of through holes, and the plurality of through holes are parallel to each other; more preferably, the distances between adjacent through holes are equal.

[0020] Furthermore, the upper surface of the platform pedal is coated with an anti-slip sand layer.

[0021] The present invention also provides a subway tunnel evacuation platform, the subway tunnel evacuation platform comprises a platform bracket and the platform pedal as described above;

[0022] The platform support includes a crossbeam and an oblique brace; one end of the crossbeam is fixed to the subway tunnel wall through an upper support; one end of the oblique brace is fixed to the subway tunnel wall through a lower support, and the other end is fixed to the middle part or near the outer end of the crossbeam through an ear plate;

[0023] The platform pedal is arranged above the cross beam and is fixedly connected to the cross beam.

[0024] In order to further optimize the technical solution of the above-mentioned subway tunnel evacuation platform, the technical measures taken by the present invention also include:

[0025] Furthermore, the platform bracket is made of metal material.

[0026] Alternatively, the platform bracket is formed by pultrusion of a phenolic resin-based composite material; more preferably, the platform bracket has a cavity, and the cavity is filled with a fireproof material to improve the fireproof and heat-insulating effects of the platform bracket.

[0027] Furthermore, the pedal unit plate also includes a rib, which is located between the lower end surface of the platform pedal and the cross beam and is suitable for forming a gap between the lower end surface of the platform pedal and the cross beam.

[0028] Further, the ribs extend along the length direction of the pedal unit plate; further preferably, there are at least two ribs, which are evenly arranged on the lower end surface of the pedal unit plate. Further, the shape of the ribs is a rectangular parallelepiped or a triangular prism; it is understandable that the ribs can also adopt any other suitable shape that can achieve a reinforcing effect.

[0029] Furthermore, the through hole is opened on the side of the pedal unit plate and extends from the side wall where the U-shaped tenon is located to the side wall where the U-shaped groove is located;

[0030] Alternatively, the through hole is opened on the rib, which is suitable for the connecting rod to pass through the through hole and then connect to multiple pedal unit plates in sequence.

[0031] Furthermore, the platform pedal is fixed to the crossbeam by a binding strap; wherein the binding strap may be a metal chain.

[0032] Alternatively, the platform pedal is fixed to the crossbeam by a fastener; wherein the fastener comprises:

[0033] An upper plate, the upper plate being arranged on the upper end surface of the platform pedal;

[0034] A lower plate, the lower plate being arranged on the lower end surface of the crossbeam;

[0035] A connecting column, one end of which is fixedly connected to the upper plate, and the other end of which is adapted to pass through corresponding mounting holes of the platform pedal, the crossbeam and the lower plate;

[0036] A nut is threadedly connected to the connecting column and locks and fixes the platform pedal and the crossbeam between the upper plate and the lower plate.

[0037] It is understandable that the platform pedal may also be fixed to the crossbeam by other conventional fixing methods.

[0038] Furthermore, there are two connecting columns, which are symmetrically arranged at both ends of the upper plate and are suitable for forming a rectangle with the upper plate and the lower plate.

[0039] Alternatively, the upper plate includes a first upper plate and a second upper plate, and there are two connecting columns, which are respectively connected to the first upper plate and the second upper plate, and are suitable for forming a rectangle with an open side together with the first upper plate, the second upper plate, and the lower plate.

[0040] Furthermore, the fastener is made of metal material.

[0041] The present invention also provides a method for preparing the subway tunnel evacuation platform as described above, comprising the following steps:

[0042] Step S1, impregnating glass fiber yarn with phenolic resin glue to obtain glass fiber yarn coated with phenolic resin;

[0043] Step S2, pultruding the fireproof material, the glass fiber fabric and the glass fiber yarn treated in step S1 to obtain a phenolic resin-based composite profile filled with the fireproof material;

[0044] Step S3, cutting the phenolic resin-based composite profile filled with fireproof material obtained in step S2 to a fixed length to obtain a pedal unit plate filled with fireproof material;

[0045] Step S4, assembling the pedal unit panels filled with fireproof material obtained in step S3 into a whole, and connecting them with connecting rods to obtain a platform pedal;

[0046] Step S5, assembling the platform pedal obtained in step S4 with the platform bracket to obtain the subway tunnel evacuation platform;

[0047] Alternatively, include the following steps:

[0048] Step S1, impregnating glass fiber yarn with phenolic resin glue to obtain glass fiber yarn coated with phenolic resin;

[0049] Step S21, pultruding the glass fiber fabric and the glass fiber yarn processed in step 1, and forming one or more cavity structures to obtain a phenolic resin-based composite profile with a cavity;

[0050] Step S31, cutting the phenolic resin-based composite profile with a cavity obtained in step S21 to a fixed length to obtain a pedal unit plate with a cavity;

[0051] Step S32, filling the cavity of the pedal unit plate processed in step S31 with a fireproof material to obtain a pedal unit plate filled with the fireproof material;

[0052] Step S4, assembling the pedal unit panels filled with fireproof material obtained in step S3 into a whole, and connecting them with connecting rods to obtain a platform pedal;

[0053] Step S5, assembling the platform pedal obtained in step S4 with the platform bracket to obtain the subway tunnel evacuation platform.

[0054] In order to further optimize the technical solution of the above preparation method, the technical measures taken by the present invention also include:

[0055] The glass fiber yarn is an alkali-free or medium-alkali glass fiber roving;

[0056] The glass fiber fabric is selected from one or more of alkali-free glass fiber stitched mat, chopped strand mat, unidirectional fiber cloth or multidirectional fiber cloth.

[0057] Furthermore, in step S2, the fireproof material is a solid plate-shaped inorganic fireproof material.

[0058] Furthermore, in step S32, the fireproof material may be a solid plate-like inorganic fireproof material, or one or more inorganic fireproof materials selected from filament-like fireproof materials and powdery fireproof materials.

[0059] The present invention also provides a device for preparing the pedal unit plate in the platform pedal as described above, comprising:

[0060] A creel, the creel being used for placing glass fiber yarn;

[0061] A resin tank, wherein a phenolic resin glue is provided in the resin tank, and is suitable for allowing the glass fiber yarn to enter the resin tank after passing through a yarn separation plate;

[0062] An unwinding machine, which is arranged at the rear section of the resin tank and is used to place the glass fiber fabric;

[0063] A conveyor belt, which is arranged at the rear section of the resin tank and is used to place the fireproof material; a needle-punched roller is arranged above the conveyor belt, and the needle-punched roller moves synchronously with the conveyor belt and is suitable for cooperating with the conveyor belt to convey the fireproof material;

[0064] A preformed plate, which is disposed at the rear section of the resin tank and is suitable for positioning the glass fiber yarn, the glass fiber fabric, and the fireproof material, and pre-arranging the glass fiber yarn, the glass fiber fabric, and the fireproof material in an orderly manner according to the product shape;

[0065] A high temperature mold, which is arranged at the rear section of the preformed plate and is used for profile forming, and is suitable for allowing the glass fiber yarn, the glass fiber fabric, and the fireproof material to enter the high temperature mold after passing through the preformed plate for curing and forming;

[0066] A traction device, which is arranged at the rear section of the high-temperature mold and is suitable for traction of the profile after curing and forming by the high-temperature mold, so that the glass fiber yarn, the glass fiber fabric, and the fireproof material are continuously moved toward the high-temperature mold;

[0067] A cutting device is arranged at the rear section of the traction device and is suitable for cutting the profiles formed by curing of the high-temperature mold into fixed lengths.

[0068] The present invention adopts the above technical solution, and has the following technical effects compared with the prior art:

[0069] The platform pedal provided by the embodiment of the present invention is composed of a plurality of pedal unit plates arranged and assembled, and a connecting rod is used to penetrate the through hole opened in the pedal unit plate, and the plurality of pedal unit plates are connected in sequence, and a cavity is set in the pedal unit plate, and a fireproof material is filled in the cavity, and the fireproof material can improve the fireproof and heat-insulating effect of the platform pedal and reduce the safety hazard in the event of a fire. The inorganic fireproof material preferably used in the present invention has high mechanical strength and good fireproof performance, and the inorganic fireproof material belongs to a non-combustible fireproof material, and basically does not change in volume under the action of high temperature and flame; the present invention fills the inorganic fireproof material in the pedal unit plate, which has at least the following two advantages: on the one hand, its high mechanical strength and good fireproof performance can further improve the safety factor of the subway tunnel evacuation platform in the event of a fire; on the other hand, when a fire occurs, the temperature rises, which easily causes the shape of the profile to change, thereby affecting the flatness of the platform pedal, and easily causing passengers to fall during the evacuation process, and the use of inorganic fireproof materials helps to reduce the degree of shape change of the platform pedal, thereby improving the safety factor of passengers during evacuation.

[0070] The platform pedal provided in an embodiment of the present invention also has a U-shaped groove on one side of the pedal unit plate and a U-shaped tenon on the other side. The U-shaped groove and the U-shaped tenon are connected and assembled into a whole. The platform pedal obtained by connecting with a connecting rod can achieve seamless splicing and has excellent assembly flatness.

[0071] The present invention further sets the pedal unit plate to be pultruded by a phenolic resin-based composite material, and the phenolic resin-based composite material is made of glass fiber yarn, glass fiber fabric and phenolic resin. According to research, the phenolic resin-based composite material used in the present invention has the advantages of corrosion resistance and easy installation, and also has the advantages of light weight, high strength, high flame retardancy, low smoke generation, easy operation, and high installation efficiency; it is combined with fireproof materials, especially inorganic fireproof materials, and after filling, the fireproof and heat-insulating effect is better, and the fire resistance limit requirement of 1 hour can be met, providing sufficient time for passengers to evacuate in the event of a fire.

[0072] The subway tunnel evacuation platform provided by the embodiment of the present invention has ribs arranged on the lower end surface of the pedal unit plate. When the platform pedal is fixedly connected to the platform bracket, the ribs are located between the lower end surface of the platform pedal and the cross beam, and are suitable for forming a gap between the lower end surface of the platform pedal and the cross beam. The arrangement of the ribs in the present invention has at least the following two benefits: on the one hand, the ribs can improve the structural strength of the pedal unit plate itself, thereby improving the structural strength of the platform pedal assembled by arranging a plurality of pedal unit plates; on the other hand, the ribs are arranged between the cross beam and the platform pedal, avoiding direct contact between the cross beam and the platform pedal, and two adjacent ribs form a gap between the lower end surface of the platform pedal and the cross beam. The gap can provide expansion space for the high-temperature thermal expansion of the platform pedal when a fire occurs, which helps to avoid the damage of the connection structure between the platform pedal and the cross beam caused by thermal expansion, thereby improving the connection strength between the platform pedal and the cross beam, and also helps to reduce the overall deformation degree of the subway tunnel evacuation platform and improve the flatness of the upper surface of the platform pedal when heated.

[0073] The preparation method of the subway tunnel evacuation platform provided by the embodiment of the present invention has a simple process and high preparation efficiency; and the subway tunnel evacuation platform prepared by the preparation method of the present invention has high strength, good fire resistance, and good surface smoothness of the platform pedal after assembly.

[0074] In a preparation method of an embodiment of the present invention, the fireproof material is formed in the pedal unit plate by an integrated pultrusion method. The pedal unit plate prepared by this method has good combination of fireproof material and phenolic resin-based composite material and high density, which helps to further improve the fire resistance limit of the platform pedal.

[0075] In the preparation method of another embodiment of the present invention, the fireproof material is formed in the pedal unit plate by post-filling the cavity. This method can adapt to various forms of fireproof materials, and the preparation method of the post-filled fireproof material will not affect the foaming structure of the phenolic resin-based composite material itself. It can also flexibly adjust the filling amount and filling density of the fireproof material according to product needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 This is a schematic structural diagram of a platform pedal according to Embodiment 1 of the present invention;

[0077] Figure 2 for Figure 1 A schematic diagram of the structure of a pedal unit plate in a platform pedal;

[0078] Figure 3 for Figure 2 The main view;

[0079] Figure 4 It is a schematic structural diagram of a pedal unit plate in a platform pedal according to Embodiment 3 of the present invention;

[0080] Figure 5 for Figure 4 The main view;

[0081] Figure 6 This is a schematic structural diagram of a subway tunnel evacuation platform according to Embodiment 4 of the present invention;

[0082] Figure 7 for Figure 6 Schematic diagram of the structure of the fastener;

[0083] Figure 8 This is a schematic structural diagram of a fastener in a subway tunnel evacuation platform according to Embodiment 5 of the present invention;

[0084] Fig. 9 This is a schematic structural diagram of a subway tunnel evacuation platform according to Embodiment 7 of the present invention;

[0085] Fig.10 This is a schematic diagram of the structure of an apparatus for preparing a pedal unit plate filled with a fireproof material in Example 10 of the present invention;

[0086] Wherein, each figure is marked as:

[0087] 100- platform pedal; 110- pedal unit plate; 111- U-shaped groove; 112- U-shaped tenon; 113- rib; 120- through hole; 130- connecting rod; 140- fireproof material; 200- platform bracket; 210- cross beam; 220- diagonal brace; 230- fastener; 231- upper plate; 231a- first upper plate; 231b- second upper plate; 232- lower plate; 233 -connecting column; 234-nut; 240-upper support; 250-lower support; 260-ear plate; 270-stop baffle; 301-yarn rack; 302-yarn dividing plate; 303-resin tank; 304-unwinding machine; 305-conveyor belt; 306-needling roller; 307-preformed plate; 308-high temperature mold; 309-environmental protection equipment; 310-traction device; 311-cutting device. DETAILED DESCRIPTION

[0088] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0089] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0090] Example 1

[0091] This embodiment provides a platform pedal, such as Figure 1-3 As shown, the platform pedal 100 is composed of a plurality of pedal unit plates 110 arranged and assembled; a U-shaped groove 111 is provided on one side of the pedal unit plate 110, and a U-shaped tenon 112 is provided on the other side, and the U-shaped tenon 112 is suitable for fitting with the U-shaped groove 111; adjacent pedal unit plates 110 are connected and assembled into a whole through the U-shaped groove 111 and the U-shaped tenon 112; a through hole 120 is opened on the pedal unit plate 110, and a connecting rod 130 is passed through the through hole 120, and the connecting rod 130 connects a plurality of pedal unit plates 110 in sequence; the pedal unit plate 110 has a cavity, and the cavity is filled with a fireproof material 140.

[0092] As a preferred implementation of this embodiment, in this embodiment, if Figure 2 As shown, the pedal unit plate 110 is in the shape of a rectangle, and a rib 113 is respectively provided on both sides of the lower end surface of the rectangular pedal unit plate 110, and the two ribs 113 extend along the length direction of the pedal unit plate 110; wherein, the width B of the rectangle is 50mm-1200mm, and the height H is 30mm-60mm; the rectangular pedal unit plates 110 are arranged and assembled along the width direction to obtain the platform pedal 100, and the size of the platform pedal 100 in the width direction of the pedal unit plate 110 is 600mm-2000mm.

[0093] As a preferred implementation of this embodiment, in this embodiment, the pedal unit plate 110 is formed by pultrusion of a phenolic resin-based composite material. The phenolic resin-based composite material described in this embodiment can be a conventional phenolic resin-based composite material with fireproof performance known to those skilled in the art, or the phenolic resin-based composite material described in this embodiment can also be specifically made of glass fiber yarn, glass fiber fabric and phenolic resin.

[0094] As a preferred implementation of this embodiment, in this embodiment, the fireproof material 140 is an inorganic fireproof material; those skilled in the art can select conventional inorganic fireproof materials, such as foamed cement board and glass magnesium board, according to actual conditions.

[0095] As a preferred implementation mode of this embodiment, in this embodiment, the connecting rod 130 is pultruded from a phenolic resin-based composite material; or the connecting rod 130 is made of a stainless steel material; the phenolic resin-based composite material used to make the connecting rod 130 has the same composition as the phenolic resin-based composite material used to make the pedal unit plate 110.

[0096] As a preferred implementation of this embodiment, in this embodiment, the pedal unit plate 110 has a plurality of cavities, and the plurality of cavities are respectively filled with the above-mentioned fireproof material 140 .

[0097] As a preferred implementation mode of this embodiment, in this embodiment, a plurality of through holes 120 are opened on the side of the pedal unit plate 110, and the plurality of through holes 120 respectively extend from the side wall where the U-shaped tenon 112 is located to the side wall where the U-shaped groove 111 is located; the plurality of through holes 120 are evenly arranged at equal intervals, and connecting rods 130 are respectively passed through the plurality of through holes 120.

[0098] As a preferred implementation of this embodiment, in this embodiment, the upper surface of the platform pedal 100 is uniformly coated with an anti-slip sand layer.

[0099] Example 2

[0100] This embodiment provides a platform pedal, and the platform pedal 100 in this embodiment is composed of a plurality of pedal unit plates 110 arranged and assembled. The platform pedal in this embodiment is different from the platform pedal in Embodiment 1 in that: in the platform pedal 100 in this embodiment, a through hole 120 is provided on the rib 113, which is suitable for a connecting rod 130 to pass through the through hole 120 and be perpendicular to the rib 113, and to sequentially connect a plurality of pedal unit plates 110 (not shown in the figure).

[0101] Example 3

[0102] This embodiment provides a platform pedal. The platform pedal 100 in this embodiment is composed of multiple Figure 4-5 The pedal unit plates 110 shown are arranged and assembled. The platform pedal of this embodiment is different from the platform pedal of embodiment 1 in that: in the platform pedal 100 of this embodiment, no ribs 113 are provided on the lower section of the pedal unit plates 110 .

[0103] Example 4

[0104] This embodiment provides a subway tunnel evacuation platform, such as Figure 6As shown, the platform support 200 and the platform pedal 100 in Embodiment 1 are included; the platform support 200 includes a crossbeam 210 and a diagonal brace 220; one end of the crossbeam 210 is fixed to the subway tunnel wall through an upper support 240; one end of the diagonal brace 220 is fixed to the subway tunnel wall through a lower support 250, and the other end is fixed to the middle or near the outer end of the crossbeam 210 through an ear plate 260; the platform pedal 100 is arranged above the crossbeam 210 and is fixedly connected to the crossbeam 210. In the subway tunnel evacuation platform of this embodiment, the rib 113 is located between the lower end surface of the platform pedal 100 and the crossbeam 210, and is suitable for forming a gap between the lower end surface of the platform pedal 100 and the crossbeam 210.

[0105] As a preferred implementation mode of this embodiment, in this embodiment, the cross beam 210 and the diagonal brace 220 of the platform bracket 200 are made of metal material; or the platform bracket 200 is pultruded by a phenolic resin-based composite material, and the platform bracket 200 has a cavity filled with a fireproof material 140 to improve the fireproof and heat-insulating effect of the platform bracket 200; the phenolic resin-based composite material used to make the platform bracket 200 has the same composition as the phenolic resin-based composite material used to make the pedal unit plate 110 in Example 1.

[0106] As a preferred implementation of this embodiment, in this embodiment, if Figure 6-Figure 7 As shown, the cross beam 210 is fixed to the platform pedal 100 by a fastener 230; wherein the fastener 230 includes: an upper plate 231, which is arranged on the upper end surface of the platform pedal 100; a lower plate 232, which is arranged on the lower end surface of the cross beam 210; a connecting column 233, one end of which is fixedly connected to the upper plate 231, and the other end of which is suitable for passing through the corresponding mounting holes of the platform pedal 100, the cross beam 210 and the lower plate 232; and a nut 234, which is threadedly connected to the connecting column 233 and locks and fixes the platform pedal 100 and the cross beam 210 between the upper plate 231 and the lower plate 232. In this embodiment, there are two connecting columns 233, which are symmetrically arranged at both ends of the upper plate 231 and are suitable for forming a rectangle with the upper plate 231 and the lower plate 232.

[0107] As a preferred implementation of this embodiment, in this embodiment, the fastener 230 is made of metal material, and those skilled in the art can select conventional metal materials, such as stainless steel, according to actual conditions.

[0108] As a preferred implementation mode of this embodiment, in this embodiment, a stop baffle 270 is provided at the outer end of the crossbeam 210 and the platform pedal 100, and the stop baffle 270 is used to prevent the crossbeam 210 and the platform pedal 100 from relative displacement, thereby further improving the connection firmness between the crossbeam 210 and the platform pedal 100.

[0109] When installing the subway tunnel evacuation platform of this embodiment, Figure 6 and Figure 7 As shown, first, the left end of the crossbeam 210 is fixed to the subway tunnel wall through the upper support 240, and the lower end of the diagonal brace 220 is fixed to the subway tunnel wall through the lower support 250, the diagonal brace 220 is connected to the crossbeam 210 through the ear plate 260, and then the platform pedal 100 and the crossbeam 210 of the platform bracket 200 are connected through the fastener 230.

[0110] Example 5

[0111] This embodiment provides a subway tunnel evacuation platform. The subway tunnel evacuation platform of this embodiment is different from the subway tunnel evacuation platform of embodiment 4 in that: Figure 8 As shown, in this embodiment, the upper plate 231 in the fastener 230 includes a first upper plate 231a and a second upper plate 231b, and there are two connecting columns 233, which are respectively connected to the first upper plate 231a and the second upper plate 231b, and are suitable for forming a rectangle with an open side together with the first upper plate 231a, the second upper plate 231b, and the lower plate 232.

[0112] When installing the subway tunnel evacuation platform of this embodiment, Figure 6 and Figure 8 As shown, first, the left end of the crossbeam 210 is fixed to the subway tunnel wall through the upper support 240, and the lower end of the diagonal brace 220 is fixed to the subway tunnel wall through the lower support 250, the diagonal brace 220 is connected to the crossbeam 210 through the ear plate 260, and then the platform pedal 100 and the crossbeam 210 of the platform bracket 200 are connected through the fastener 230.

[0113] Example 6

[0114] The present embodiment provides a subway tunnel evacuation platform, which includes a platform support 200 and a platform pedal 100 in Embodiment 2; the platform support 200 includes a crossbeam 210 and a diagonal brace 220; one end of the crossbeam 210 is fixed to the subway tunnel wall through an upper support 240; one end of the diagonal brace 220 is fixed to the subway tunnel wall through a lower support 250, and the other end is fixed to the middle or near the outer end of the crossbeam 210 through an ear plate 260; the platform pedal 100 is arranged above the crossbeam 210 and is fixedly connected to the crossbeam 210. In the subway tunnel evacuation platform of the present embodiment, the rib 113 is located between the lower end surface of the platform pedal 100 and the crossbeam 210, and is suitable for forming a gap between the lower end surface of the platform pedal 100 and the crossbeam 210.

[0115] As a preferred implementation mode of this embodiment, in this embodiment, the cross beam 210 and the diagonal brace 220 of the platform bracket 200 are made of metal material; or the platform bracket 200 is pultruded by a phenolic resin-based composite material, and the platform bracket 200 has a cavity filled with a fireproof material 140 to improve the fireproof and heat-insulating effect of the platform bracket 200; the phenolic resin-based composite material used to make the platform bracket 200 has the same composition as the phenolic resin-based composite material used to make the pedal unit plate 110 in Example 1.

[0116] As a preferred implementation of this embodiment, in this embodiment, the crossbeam 210 is fixed to the platform pedal 100 by a binding belt. The binding belt passes through the gap between the lower end surface of the platform pedal 100 and the connecting rod 130, and binds and fixes the connecting rod 130 and the crossbeam 210 together, thereby realizing a fixed connection between the platform pedal 100 and the crossbeam 210 (not shown in the figure). This embodiment uses a binding belt to fix the crossbeam 210 and the platform pedal 100 together. Compared with the fastener 230 used to fix the crossbeam 210 and the platform pedal 100 in Embodiment 4 or 5, this embodiment can not destroy the flatness of the upper surface of the platform pedal 100, so that the flatness of the upper surface of the platform pedal 100 is better.

[0117] The binding belt in this embodiment can be made of metal chain to improve the firmness of the connection.

[0118] As a preferred implementation mode of this embodiment, in this embodiment, a stop baffle 270 is provided at the outer end of the crossbeam 210 and the platform pedal 100, and the stop baffle 270 is used to prevent the crossbeam 210 and the platform pedal 100 from relative displacement, thereby further improving the connection firmness between the crossbeam 210 and the platform pedal 100.

[0119] When installing the subway tunnel evacuation platform of this embodiment, first, the left end of the beam 210 is fixed to the subway tunnel wall through the upper support 240, and the lower end of the diagonal brace 220 is fixed to the subway tunnel wall through the lower support 250, and the diagonal brace 220 is connected to the beam 210 through the ear plate 260, and then the platform pedal 100 and the beam 210 of the platform bracket 200 are connected by a binding belt.

[0120] Example 7

[0121] This embodiment provides a subway tunnel evacuation platform, such as Fig. 9As shown, it includes a platform bracket 200 and the platform pedal 100 in Example 3. The difference between the subway tunnel evacuation platform of this embodiment and the subway tunnel evacuation platform of Example 4 or Example 5 is that: in the subway tunnel evacuation platform of this embodiment, when the crossbeam 210 is fixed under the platform pedal 100, since the lower end surface of the pedal unit plate 110 in Example 3 is not provided with the rib 113, the upper end surface of the crossbeam 210 is in direct contact with the lower end surface of the platform pedal 100 and fits tightly.

[0122] Example 8

[0123] This embodiment provides a method for preparing any one of the subway tunnel evacuation platforms in Embodiments 4-7, comprising the following steps:

[0124] Step S1, drawing out glass fiber yarn from the yarn rack 301, passing through the yarn separation plate 302 under the traction of the traction device 310, and then immersing in the resin tank 303 filled with phenolic resin glue to obtain glass fiber yarn coated with phenolic resin;

[0125] Step S2, placing the solid plate-shaped fireproof material 140 between the conveyor belt 305 and the needle roller 306, and continuously conveying it toward the high-temperature mold 308 under the synchronous action of the conveyor belt 305 and the needle roller 306; at the same time, the glass fiber yarn coated with phenolic resin is continuously conveyed toward the high-temperature mold 308 under the traction action of the traction device 310, and the glass fiber fabric is continuously conveyed from the unwinder 304 toward the high-temperature mold 308 under the traction action of the traction device 310; the preformed plate 307 arranged at the rear section of the resin tank 303 is used to circumvent the fireproof material 140. The material 140, the glass fiber fabric, and the glass fiber yarn coated with phenolic resin are positioned, and the fireproof material 140, the glass fiber fabric, and the glass fiber yarn coated with phenolic resin are pre-arranged in order according to the product shape, so that the glass fiber fabric is located at the outermost layer and the fireproof material 140 is located at the innermost layer; according to the shape requirements of the pedal unit plate 110, the high-temperature mold 308 integrally pultrudes the preformed fireproof material 140, the glass fiber fabric, and the glass fiber yarn coated with phenolic resin to obtain a phenolic resin-based composite profile filled with fireproof material;

[0126] Step S3, the phenolic resin-based composite profile filled with fireproof material obtained in step S2 is continuously conveyed toward the cutting device 311 under the traction of the traction device 310, and the cutting device 311 cuts the phenolic resin-based composite profile filled with fireproof material obtained in step S2 to a fixed length according to the length requirement of the pedal unit plate 110 to obtain the pedal unit plate filled with fireproof material;

[0127] Step S4, drilling through holes 120 with fixed spacing on the pedal unit plate filled with fireproof material obtained in step S3 according to design requirements by means of a row drill, and then seamlessly assembling the pedal unit plates 110 of fixed length and single width or the pedal unit plates 110 of different widths through the U-shaped grooves 111 and the U-shaped tenons 112 according to design requirements, and connecting them with connecting rods 130 to obtain the platform pedal 100, and then evenly spraying a layer of anti-skid sand on the upper surface of the obtained platform pedal 100;

[0128] Step S5, connecting the platform pedal 100 obtained in step S4 to the platform bracket 200 through the fastener 230 or the binding belt to obtain the subway tunnel evacuation platform.

[0129] The traction device 310 described in this embodiment is arranged between the high-temperature mold 308 and the cutting device 311, and includes an upper traction block and a lower traction block, and the upper traction block and the lower traction block are respectively connected to a driving motor, and the upper traction block and the lower traction block move up and down under the driving action of the driving motor to pull the glass fiber yarn, glass fiber fabric, and fireproof material 140 toward the high-temperature mold 308. In this embodiment, the rolling speed of the needle-punched roller 306 is the same as the traction speed of the traction device 310 to keep the transmission speed of the fireproof material 140 consistent with the forward speed of the phenolic resin-based composite material. In this embodiment, an environmental protection device 309 is arranged above the high-temperature mold 308 in step S3 to collect small molecular volatiles generated during high-temperature curing; those skilled in the art can select conventional environmental protection equipment 309, such as an exhaust hood, according to actual conditions.

[0130] In this embodiment, exhaust holes are provided on the high temperature mold 308 in step S3 to exhaust water vapor and low molecular volatiles generated during high temperature curing to avoid bubbles and voids caused by high temperature molding.

[0131] In this embodiment, the glass fiber yarn is alkali-free or medium-alkali glass fiber untwisted roving; the glass fiber fabric is selected from one or more of alkali-free glass fiber stitched mat, chopped strand mat, unidirectional fiber cloth or multidirectional fiber cloth.

[0132] Example 9

[0133] This embodiment provides a method for preparing any one of the subway tunnel evacuation platforms in Embodiments 4-7. The difference between the method for preparing the subway tunnel evacuation platform in this embodiment and the method for preparing the subway tunnel evacuation platform in Embodiment 8 is that steps S2-S3 can be replaced by the following steps S21-S32:

[0134] Step S21, the glass fiber yarn coated with phenolic resin is continuously conveyed toward the high-temperature mold 308 under the traction of the traction device 310, and the glass fiber fabric is continuously conveyed from the unwinder 304 toward the high-temperature mold 308 under the traction of the traction device 310; the preformed plate 307 arranged at the rear section of the resin tank 303 positions the glass fiber fabric and the glass fiber yarn coated with phenolic resin, and pre-arranges the glass fiber fabric and the glass fiber yarn coated with phenolic resin in an orderly manner according to the product shape, so that the glass fiber fabric is located in the outer layer and the glass fiber yarn coated with phenolic resin is located in the inner layer; according to the shape requirements of the pedal unit plate 110, the high-temperature mold 308 integrally pultrudes the preformed glass fiber fabric and the glass fiber yarn coated with phenolic resin, and simultaneously forms a structure of one or more cavities to obtain a phenolic resin-based composite profile with a cavity;

[0135] Step S31, the phenolic resin-based composite profile with a cavity obtained in step S21 is continuously conveyed toward the cutting device 311 under the traction of the traction device 310, and the cutting device 311 cuts the phenolic resin-based composite profile with a cavity obtained in step S21 into a fixed length according to the length requirement of the pedal unit plate 110110 to obtain the pedal unit plate with a cavity;

[0136] Step S32, filling the fireproof material into the cavity of the pedal unit plate processed in step S31 through a pushing tool to form an integrated structure, thereby obtaining a pedal unit plate filled with the fireproof material.

[0137] In this embodiment, in step S32, the fireproof material may be a solid plate-like fireproof material, or one or more fireproof materials in a filamentous, powdery form.

[0138] Example 10

[0139] This embodiment provides a device for preparing a pedal unit plate in a platform pedal of embodiment 1 or 2, such as Fig.10 As shown, including:

[0140] A creel 301, the creel 301 is used for placing glass fiber yarn;

[0141] A resin tank 303, in which a phenolic resin glue is provided, which is suitable for allowing the glass fiber yarn to enter the resin tank 303 after passing through the yarn separation plate 302;

[0142] An unwinding machine 304, which is disposed at the rear section of the resin tank 303 and is used to place the glass fiber fabric;

[0143] The conveyor belt 305 is arranged at the rear section of the resin tank 303 and is used to place the fireproof material 140; a needle-punched roller 306 is arranged above the conveyor belt 305, and the needle-punched roller 306 moves synchronously with the conveyor belt 305, and is suitable for cooperating with the conveyor belt 305 to convey the fireproof material 140;

[0144] The preformed plate 307 is disposed at the rear section of the resin tank 303 and is suitable for positioning the glass fiber yarn, the glass fiber fabric, and the fireproof material 140, and pre-arranging the glass fiber yarn, the glass fiber fabric, and the fireproof material 140 in an orderly manner according to the product shape;

[0145] A high temperature mold 308 is provided at the rear section of the preformed plate 307 and is used for profile forming, and is suitable for allowing the glass fiber yarn, the glass fiber fabric, and the fireproof material 140 to enter the high temperature mold 308 after passing through the preformed plate 307 for curing and forming;

[0146] A traction device 310, which is disposed at the rear section of the high-temperature mold 308 and is suitable for traction of the profile after curing and forming by the high-temperature mold 308, so that the glass fiber yarn, glass fiber fabric, and fireproof material 140 are continuously moved toward the high-temperature mold 308;

[0147] The cutting device 311 is arranged at the rear section of the traction device 310 and is suitable for cutting the profiles formed by curing by the high-temperature mold 308 into fixed lengths.

[0148] As a preferred implementation of this embodiment, in this embodiment, an environmental protection device 309 is provided above the high-temperature mold 308 to collect small molecule volatiles generated during high-temperature curing; technical personnel in this field can select conventional environmental protection equipment 309, such as an exhaust hood, according to actual conditions.

[0149] Effect experiment example

[0150] The subway tunnel evacuation platforms of Examples 4-7 were tested for fire resistance and deformation resistance, and the test results are shown in the following table:

[0151]

[0152] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution of the practical is also within the scope of the present invention. Therefore, the equalization transformation and modification made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A method for preparing a subway tunnel evacuation platform, characterized in that: The following steps are involved: Step S1, impregnating glass fiber yarn with phenolic resin glue to obtain glass fiber yarn coated with phenolic resin; Step S2, pultruding the fireproof material, the glass fiber fabric and the glass fiber yarn treated in step S1 to obtain a phenolic resin-based composite profile filled with the fireproof material; Step S3, cutting the phenolic resin-based composite profile filled with fireproof material obtained in step S2 to a fixed length to obtain a pedal unit plate filled with fireproof material; Step S4, assembling the pedal unit panels filled with fireproof material obtained in step S3 into a whole, and connecting them with connecting rods to obtain a platform pedal; Step S5, assembling the platform pedal obtained in step S4 with the platform bracket to obtain the subway tunnel evacuation platform; A plurality of through holes are provided on the side of the pedal unit plate, and connecting rods are respectively passed through the through holes, and the connecting rods are formed by pultrusion of a phenolic resin-based composite material; A rib is provided on each of the two sides of the lower end surface of the pedal unit plate, and the two ribs extend along the length direction of the pedal unit plate; The fireproof material is a solid plate-shaped fireproof material, and the fireproof material is an inorganic fireproof material; The solid plate-shaped fireproof material is placed between the conveyor belt and the needle-punched roller, and is continuously conveyed toward the high-temperature mold under the synchronous action of the conveyor belt and the needle-punched roller; the glass fiber yarn coated with phenolic resin is continuously conveyed toward the high-temperature mold under the traction of the traction device.

2. A device for preparing a pedal unit plate based on the method for preparing a subway tunnel evacuation platform according to claim 1, characterized in that: include: A creel, the creel being used for placing glass fiber yarn; A resin tank, wherein a phenolic resin glue is provided in the resin tank, and is suitable for allowing the glass fiber yarn to enter the resin tank after passing through a yarn separation plate; An unwinding machine, which is arranged at the rear section of the resin tank and is used to place the glass fiber fabric; A conveyor belt, which is arranged at the rear section of the resin tank and is used to place the fireproof material; a needle-punched roller is arranged above the conveyor belt, and the needle-punched roller moves synchronously with the conveyor belt and is suitable for cooperating with the conveyor belt to convey the fireproof material; A preformed plate, which is disposed at the rear section of the resin tank and is suitable for positioning the glass fiber yarn, the glass fiber fabric, and the fireproof material, and pre-arranging the glass fiber yarn, the glass fiber fabric, and the fireproof material in an orderly manner according to the product shape; A high temperature mold, which is arranged at the rear section of the preformed plate and is used for profile forming, and is suitable for allowing the glass fiber yarn, the glass fiber fabric, and the fireproof material to enter the high temperature mold after passing through the preformed plate for curing and forming; A traction device, which is arranged at the rear section of the high-temperature mold and is suitable for traction of the profile after curing and forming by the high-temperature mold, so that the glass fiber yarn, the glass fiber fabric, and the fireproof material are continuously moved toward the high-temperature mold; A cutting device is arranged at the rear section of the traction device and is suitable for cutting the profiles formed by curing of the high-temperature mold into fixed lengths.

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