Fabricated motor train unit outdoor concrete boarding platform

Abstract

The utility model provides an assembly type motor train unit outdoor concrete boarding platform. The assembly type motor train unit outdoor concrete boarding platform comprises assembly type basic units, assembly type concrete walking platform units, assembly type concrete stepping units and assembly type hand rails. Wherein the assembly type foundation unit is pre-buried in a foundation cushion layer and is used for bearing a total load; the assembly type concrete walking platform unit is connected with the assembly type foundation unit through a reserved assembly channel; the fabricated concrete step unit is connected between the walking platform unit and the ground and provides a passage for people to go up and down; the assembly type hand rail is mounted on the stepping unit to ensure the safety of personnel; and telescopic connecting bridges are arranged on the two sides of the assembly type concrete walking platform unit. According to the structure, stable support is provided during material transfer, and the probability of occurrence of safety accidents is remarkably reduced; the construction time is greatly shortened through modular assembly, material loss is reduced, the construction cost is reduced, and meanwhile later maintenance and extension are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of EMU boarding equipment, in particular to an assembled EMU outdoor concrete boarding platform. Background Art

[0002] High-speed trains consist of several powered vehicles (EMUs) and unpowered vehicles (trailers), and operate in a fixed formation during their normal service life. EMUs typically consist of 8 or 16 cars, with the lead and trailing cars equipped with driver's cabs, allowing for bidirectional operation. Upon arrival, trains can reverse course and operate in the opposite direction, minimizing track usage, operating time, and reducing risks. These trains are particularly well-suited for reversing passenger trains at terminal stations, where frequent turning and folding occur. They offer the advantages of dual-end control and efficient reversing technology.

[0003] After the high-speed train completes the mainline operation, in order to meet the maintenance, preparation and storage needs of the train, the train is generally parked in the train section, train depot or storage yard. Taking China's CR400 standard train as an example, when the train is in preparation, the height of the floor surface from the rail surface is 1260mm. In order to meet the needs of the driver getting on and off the train, an EMU boarding platform must be set up.

[0004] A boarding platform is a specialized facility located on the side of a track where EMUs are parked, such as at a train depot, passenger depot, or station, for train drivers, onboard mechanics, and other railway personnel to board and alight from the trains. A boarding platform is a supporting facility for the track (or track) where EMUs are stored (parked) and should be designed, constructed, and commissioned simultaneously with new line construction, station renovations, and the construction of new EMU depots and passenger depots.

[0005] Traditional non-assembled boarding platforms have the following major problems when facing frequent and high-speed EMUs: (1) Traditional fixed platforms are difficult to cope with the needs of different vehicle models, changes in formations and fine-tuning of parking positions, resulting in limited flexibility of use; (2) Poor safety guarantees: especially the risk of stepping on air when boarding and the hidden danger of slipping during material handling, which threaten the safety of people and goods; (3) Structural complexity and cost: Existing designs often have a high degree of on-site customization, resulting in a long construction period, serious waste of resources, and lack of economy and efficiency; (4) Difficulty in maintenance: Fixed connection points and structural design increase the workload of subsequent maintenance and inspection, which is not conducive to long-term operation. Utility Model Content

[0006] The purpose of the utility model is to provide an outdoor concrete boarding platform for an assembled EMU in order to address the deficiencies of the prior art.

[0007] The specific technical solutions are as follows:

[0008] An outdoor concrete boarding platform for an assembled EMU comprises an assembled base unit, an assembled concrete running platform unit, an assembled concrete step unit, and an assembled handrail; wherein the assembled base unit is pre-buried in a foundation cushion layer for bearing the total load; the assembled concrete running platform unit and the matching base unit are connected via a reserved assembly groove; the assembled concrete step unit is connected between the running platform unit and the ground to provide an up and down passage for personnel; the assembled handrail is installed on the step unit to ensure the safety of personnel; and retractable connecting bridges are provided on both sides of the assembled concrete running platform unit to effectively reduce the risk of personnel stepping on air when boarding the vehicle and the hidden danger of materials getting stuck and slipping during transportation.

[0009] Optionally, the assembly channel reserved in the prefabricated foundation unit is fixedly connected to the prefabricated concrete running platform unit with the L-shaped reinforcement angle steel and bolts.

[0010] Optionally, the retractable connecting bridge includes two sliding blocks and a lap plate hinged between the two sliding blocks. A sliding groove is provided in the prefabricated concrete running platform unit for the sliding block to approach or move away from the EMU. The displacement plate slides along the sliding groove following the sliding block so that one end of the displacement plate is lapped inside the EMU.

[0011] Optionally, the sliding block is driven hydraulically or electrically.

[0012] Optionally, a wedge block is provided at one end of the lap plate close to the EMU.

[0013] Optionally, the prefabricated concrete traveling platform unit includes a plurality of standard sections, and adjacent standard sections are connected by connecting steel plates and bolts.

[0014] Optionally, the assembled concrete step unit is designed with anti-skid patterns or is installed with anti-skid pads.

[0015] Optionally, the assembled handrail is made of rust-proof galvanized steel pipe or stainless steel pipe.

[0016] Optionally, the surface of the connecting plate of the retractable connecting bridge is covered with an anti-slip material.

[0017] Optionally, the thickness of the connecting steel plates between the standard sections is not less than 10 mm.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model adopts the "assembled foundation + assembled concrete platform" model for the outdoor concrete boarding platform of the assembled EMU. The invention creatively introduces a retractable connecting bridge, which effectively overcomes the above-mentioned technical obstacles. Through the flexible retractable connecting bridge, the platform can dynamically adapt to a variety of vehicle models and formations, and can be effectively connected regardless of the parking mode, which greatly improves the versatility of the platform. The specially designed retractable connecting bridge directly reduces the gap when boarding the vehicle, and at the same time provides stable support during material transfer, significantly reducing the probability of safety accidents. Modular assembly greatly shortens construction time, reduces material loss, and reduces construction costs, while facilitating later maintenance and expansion. Comprehensive consideration of the human-computer interaction interface, such as anti-slip treatment, handrails, visual prompts, etc., creates a more secure and comfortable boarding experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a side structural diagram of the present utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the L-shaped reinforced angle steel of the utility model;

[0023] Figure 4 This is a structural diagram of the telescopic connecting bridge of the utility model.

[0024] In the figure: 1. Prefabricated foundation unit; 10. Assembly channel; 2. Prefabricated concrete walking platform unit; 3. Prefabricated concrete step unit; 4. Prefabricated handrail; 5. L-shaped reinforcement angle steel; 6. Retractable connecting bridge; 61. Sliding block; 62. Lap plate; 63. Wedge block; 64. Connecting spring. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0028] The utility model provides an assembled EMU outdoor concrete boarding platform, referring to Figures 1-4 , including an assembled foundation unit 1, an assembled concrete running platform unit 2, an assembled concrete step unit 3, and an assembled handrail 4; among them, the assembled foundation unit 1 is pre-buried in the foundation cushion layer to bear all the loads; the assembled concrete running platform unit 2 and the assembled foundation unit 1 are connected through a reserved assembly groove 10; the assembled concrete step unit 3 is connected between the running platform unit and the ground to provide a passage for people to go up and down; the assembled handrail 4 is installed on the step unit to ensure the safety of people; and retractable connecting bridges 6 are provided on both sides of the assembled concrete running platform unit 2 to effectively reduce the risk of people stepping on air when boarding the vehicle and the hidden dangers of getting stuck and slipping during material transfer.

[0029] In this embodiment, the prefabricated foundation unit 1 is prefabricated in a factory. According to the design requirements, concrete of appropriate strength grade is used for casting to ensure the strength, rigidity, crack resistance, durability and usability (heat resistance, moisture impermeability, frost resistance) of the foundation unit. During the manufacturing process, a mold is used for precise shaping so that the thickness of the foundation unit reaches 300 mm, and the dimensional error is controlled within the specified range to meet the precise assembly requirements with other components. An assembly groove 10 is reserved in the foundation unit, and a special molding structure is set in the mold to ensure that the size, shape and position of the assembly groove 10 are accurate, so that it can be quickly connected with the prefabricated concrete walking platform unit 2 and the prefabricated concrete step unit 3. At the construction site, the foundation is first processed and the ground is leveled to the required flatness, and then the cushion layer is laid. The material and thickness of the cushion layer are determined according to the geological conditions and design requirements to provide a stable support foundation. The prefabricated assembled foundation unit 1 is hoisted to the predetermined location and placed on the leveled cushion layer. During the placement process, measuring instruments (such as a level and theodolite) are used to precisely adjust the horizontality and verticality of the foundation unit, keeping the error within a very small range, for example, the horizontality error does not exceed ±5mm, and the verticality error does not exceed ±3mm. Temporary fixing devices (such as wooden wedges or steel supports) are used to fix the foundation unit in the correct position to prevent displacement during subsequent construction. Then, concrete is filled around the foundation unit and firmly embedded in the foundation cushion layer. When filling the concrete, it must be vibrated thoroughly to ensure that the concrete is dense and tightly integrated with the foundation unit so that the foundation unit can effectively bear the entire load. The assembled concrete step unit 3 is mainly connected between the walking platform unit and the ground, providing a passage for people to get on and off the boarding platform. In terms of design, to ensure the safety of people walking, the step unit is designed with anti-slip grooves or installed with anti-slip mats. The depth and spacing of the anti-slip grooves meet ergonomic and safety standards, and the anti-slip mats are made of materials with a high friction coefficient, good wear resistance and good weather resistance. When installing the step unit, construction workers ensure that its connection with the walking platform unit and the ground is firm and reliable to ensure the stability of people when going up and down.

[0030] The prefabricated reinforced concrete running platform unit is manufactured in the factory using standardized molds. According to the design, each standard unit is 2000mm long and not less than 800mm wide to ensure structural stability and meet the walking needs of personnel. During the manufacturing process, the concrete mix ratio and pouring process are controlled to ensure that the running platform unit has sufficient strength and durability. At the connection part between the running platform unit and the prefabricated base unit 1, a structure that matches the assembly channel 10 of the base unit is reserved according to the design to ensure that the two can be accurately docked. At the construction site, the prefabricated concrete running platform unit 2 is hoisted above the prefabricated base unit 1. Through crane operation, the reserved structure of the running platform unit is precisely aligned with the assembly channel 10 of the base unit. Insert the L-shaped reinforcement angle steel 5 into the reserved assembly groove 10. The size and material of the L-shaped reinforcement angle steel 5 are selected according to the design requirements to ensure that it has sufficient strength and rigidity. Pass the M12 bolts through the corresponding holes on the L-shaped reinforcement angle steel 5 and the walking platform unit and the basic unit. Use a torque wrench to tighten the bolts according to the specified torque value to achieve a fast connection between the walking platform unit and the assembled basic unit 1. This connection method not only ensures the firmness of the connection, but also facilitates installation and disassembly, reflecting the advantages of the assembled structure.

[0031] When the prefabricated reinforced concrete step unit is manufactured in the factory, the height and width of the step are designed according to ergonomic principles to provide a comfortable and safe passage for people to go up and down. The structure and size of the step unit are compatible with the prefabricated concrete walking platform unit 2 and the ground to ensure that a stable passage can be formed after connection. The concrete strength grade of the step unit meets the requirements for carrying people to go up and down, and the surface is treated with anti-slip treatment, such as using anti-slip textures or adding anti-slip materials to prevent people from slipping. At the construction site, the prefabricated concrete step unit 3 is hoisted to the predetermined position and one end is connected to the prefabricated concrete walking platform unit 2. According to the design requirements, bolt connection, slot connection or other reliable connection methods can be used. During the connection process, ensure that the connection between the step unit and the walking platform unit is firm and there is no looseness or shaking. The other end of the step unit is connected to the ground. If there are embedded parts on the ground, reliably connect the step unit to the embedded parts; if there are no embedded parts, use appropriate fixing methods based on the material and structure of the ground, such as drilling holes and driving expansion bolts, to ensure that the step unit can stably support people getting on and off the platform.

[0032] During factory manufacturing, the prefabricated handrail 4 is constructed from suitable materials (such as stainless steel or high-strength plastic) to ensure sufficient strength and weather resistance. Components such as the balusters, rails, and connectors are precisely manufactured according to design requirements. The spacing between the balusters meets safety standards, typically no more than 150 mm, to prevent people from falling through the gaps between the rails. Before installation, each component of the handrail is inspected for deformation, damage, or surface defects to ensure acceptable quality. The prefabricated handrail 4 is installed on the prefabricated concrete step unit 3. First, mark the mounting locations for the balusters on the step unit. Then, use a drilling machine to drill holes at the marked locations. Securely attach the balusters to the step unit using expansion bolts or other fixing methods. Install the rails and connect them to the balusters using connectors. During the connection process, ensure that the rails are at a suitable height for people to grasp, typically between 1.0 and 1.2 meters, and that they are securely installed and not loose. After installation, the entire handrail is inspected and adjusted to ensure that its straightness and firmness meet the requirements.

[0033] The retractable connecting bridge 6 includes two sliding blocks 61 and a lap plate 62 hinged between the two sliding blocks 61. A chute is provided within the prefabricated concrete running platform unit 2 for the sliding block 61 to move toward or away from the high-speed train. The chute is machined with high precision and has a smooth inner wall, ensuring smooth sliding of the sliding block 61. The displacement plate slides along the chute following the sliding block 61, allowing one end of the displacement plate to overlap the high-speed train. The sliding block 61 is driven either hydraulically or electrically. In practical applications, if hydraulic drive is used, a dedicated hydraulic pump station and control system will be provided, or manual adjustment is possible. The hydraulic pump station provides stable hydraulic power, which is transmitted to the hydraulic drive device of the sliding block 61 via hydraulic pipelines. The control system can precisely control the flow and pressure of the hydraulic oil, thereby achieving smooth and precise movement of the sliding block 61. If electric drive is used, a high-performance motor and transmission device will be selected. The motor transmits power to the sliding block 61 through transmission components such as a reducer, similarly achieving precise displacement control. In addition, when manual adjustment is performed, a connecting spring 64 may be provided between the sliding block 61 and the inner wall of the slide groove, and the connecting spring 64 serves to connect and prevent separation of the sliding block 61 and the lap plate 62 .

[0034] Specifically, refer to Figure 4A wedge block 63 is provided at one end of the lap plate 62 close to the high-speed train. The shape, size and material of the wedge block 63 are determined according to the design requirements when the lap plate 62 is manufactured in the factory. The wedge block 63 is made of wear-resistant, high-strength metal materials (such as alloy steel), and its wedge angle is precisely processed to ensure that it can effectively guide and fix the connection between the platform and the train. The wedge block 63 is installed at the end of the lap plate 62 close to the train. Welding or bolting can be used. During welding, ensure the welding quality, full weld, free of defects such as pores and slag inclusions; when bolting, use high-strength bolts and tighten them according to the specified torque to ensure that the wedge block 63 is firmly installed on the lap plate 62. After installation is completed, perform a functional check on the wedge block 63. When the platform is overlapped with the train, observe whether the wedge block 63 can be accurately embedded in the corresponding structure of the train to play a stabilizing and guiding role. If there is a problem with the coordination between the wedge block 63 and the train structure, adjust the position of the wedge block 63 or reprocess it in time. During daily operations, regularly inspect and maintain the wedge block 63. Check for wear, deformation, or looseness. If wear exceeds the specified limit, replace the wedge block 63 promptly. If loose, retighten the bolts or perform repair measures such as welding.

[0035] Implementation process:

[0036] Driver on board

[0037] When the EMU driver boards the train, he or she first arrives near the boarding platform. The location of the boarding platform is determined based on factors such as the parking yard's closure control mode (train control or shunting), the EMU storage type (16-car long train, 17-car long train, two-train short train, one-line two-train short train), the location of the level aisle, the position of the signal, the location of the stop sign, and the effective length of the parking lane. This allows the driver to easily find a suitable boarding location.

[0038] The driver selects the prefabricated concrete step unit 3 on the side closest to the driver's cab. In rainy, snowy, or dimly lit conditions, the driver uses the prefabricated handrail 4 in conjunction with the step unit to prevent slips and falls. Holding the handrail, the driver steps on the step unit, steadily ascending according to the height and width of the step, passing through the step unit to the prefabricated concrete running platform unit. The stable structure of the running platform unit can support the driver's weight during travel, ensuring safety. Finally, the driver enters the EMU compartment through the running platform unit and the driver's compartment door, completing the boarding process.

[0039] Driver gets off the vehicle to work

[0040] When the EMU driver gets off the train to work, the EMU first stops smoothly near the boarding platform. Since the platform's location and length are determined by comprehensively considering multiple factors such as the stop sign and the driver's cab position, the driver's cabin door is close to the running platform unit.

[0041] After opening the passenger door, the driver exits the EMU compartment and steps onto the prefabricated concrete running platform unit. The driver then walks across the running platform unit to the prefabricated concrete step units at both ends. Similarly, in rainy, snowy, or dimly lit conditions, the driver uses the prefabricated handrail 4 in conjunction with the handrail, stepping onto the step units and steadily descending. Finally, the driver descends through the step units to the ground, completing the EMU driver's disembarkation process.

[0042] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An outdoor concrete boarding platform for assembled EMU, characterized in that: It includes an assembled base unit, an assembled concrete running platform unit, an assembled concrete step unit, and an assembled handrail; wherein, the assembled base unit is pre-buried in the foundation cushion layer to bear the total load; the assembled concrete running platform unit and the matching base unit are connected through a reserved assembly groove; the assembled concrete step unit is connected between the running platform unit and the ground to provide an up and down passage for personnel; the assembled handrail is installed on the step unit to ensure the safety of personnel; and retractable connecting bridges are provided on both sides of the assembled concrete running platform unit to effectively reduce the risk of personnel stepping on air when boarding the vehicle and the hidden dangers of jamming and slipping during material transfer.

2. The outdoor concrete boarding platform for assembled EMU according to claim 1 is characterized in that: The assembly channel reserved in the assembled foundation unit is fixedly connected to the assembled concrete running platform unit in combination with the L-shaped reinforcement angle steel and bolts.

3. The outdoor concrete boarding platform for assembled EMU according to claim 1 is characterized in that: The retractable connecting bridge includes two sliding blocks and a lap plate hinged between the two sliding blocks. A sliding groove is provided in the assembled concrete running platform unit for the sliding block to approach or move away from the EMU. The lap plate slides along the sliding groove following the sliding block so that one end of the lap plate is lapped inside the EMU.

4. The outdoor concrete boarding platform for assembled EMU according to claim 3 is characterized in that: The sliding block is driven hydraulically or electrically.

5. The outdoor concrete boarding platform for assembled EMU according to claim 3 is characterized in that: The end of the lap plate is designed as a wedge-shaped block covered with soft material, so as to fit more closely with the train door frame.

6. The outdoor concrete boarding platform for assembled EMU according to claim 1 is characterized in that: The assembled concrete running platform unit includes a plurality of standard sections, and adjacent standard sections are connected by connecting steel plates and bolts.

7. The outdoor concrete boarding platform for assembled EMU according to claim 1 is characterized in that: The assembled concrete step unit is designed with anti-skid patterns or is installed with anti-skid pads.

8. The outdoor concrete boarding platform for assembled EMU according to claim 1 is characterized in that: The assembled handrail is made of galvanized steel pipe or stainless steel pipe treated with anti-rust treatment.

9. The outdoor concrete boarding platform for assembled EMU according to claim 1, characterized in that: The surface of the connecting plate of the telescopic connecting bridge is covered with anti-slip material.

10. The outdoor concrete boarding platform for assembled EMU according to claim 6, characterized in that: The thickness of the connecting steel plates between the standard sections shall not be less than 10 mm.

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