A heating floor structure for high-cold EMU

Abstract

A heating floor structure for high-cold EMUs, characterized in that: the heating floor body includes an upper bearing layer, an upper shielding / grounding layer, an electric heating layer, a lower shielding / grounding layer, and a lower bearing layer; a covering layer is laid on the upper part of the heating floor body; a sound insulation layer, a heat preservation layer, a sound absorption layer, and a drainage layer are laid in sequence from top to bottom on the lower part of the heating floor; one end or both ends of the length direction of the heating floor body are provided with a plug-in structure for splicing with adjacent floors; one side or both sides of the width direction of the heating floor body are provided with a mounting structure for connecting with the floor mounting parts on the vehicle body. The present invention can effectively guide condensed water, absorb and isolate external sounds, and reduce heat loss, especially prevent the bottom noise of the vehicle from entering the interior of the vehicle body from the floor, further improve the insulation and quietness effect inside the car, and meet the riding comfort requirements; the grounding layer has a leakage protection function when the floor is penetrated by a conductive object.

Description

Technical Field

[0001] The invention relates to a rail vehicle floor, in particular to a heating floor for a high-cold vehicle used in high-cold areas. Background Art

[0002] A high-cold EMU is a type of rail train, which is composed of at least two locomotives or powered carriages and several non-powered carriages. In order to improve the riding comfort of passengers, the EMU is generally heated by setting up an air-conditioning system when running in a cold environment. However, in a high-cold environment, the heat inside the car is limited by the thermal conductivity coefficient of the car body, the temperature loss inside the train is large, and the surface temperature of the floor inside the car is low. The general heating system needs to consume more power and occupy a larger layout space and ventilation area to meet the passenger comfort requirements. At the same time, its equipment cost and maintenance expenses are also large, and the air conditioning will generate a lot of noise in the car during operation. The long-term alternating hot and cold conditions cause a large amount of condensed water to be generated in the car body, which affects the performance of the car body insulation material and the riding comfort.

[0003] Therefore, how to provide a train set with low heating cost and high comfort in cold or extremely cold environment is a technical problem that needs to be solved in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a heating floor structure for high-cold EMUs, which can compensate for the heat loss of the chassis in the car, provide a partial heating function in the car, save space occupied by the heating system, reduce energy consumption, reduce noise in the car, and improve the comfort of passengers in the car.

[0005] In order to solve the above technical problems, the present invention provides a heating floor structure for high-cold EMUs, characterized in that: the heating floor body includes an upper bearing layer, an upper shielding / grounding layer, an electric heating layer, a lower shielding / grounding layer, and a lower bearing layer; a covering layer is laid on the upper part of the heating floor body; a sound insulation layer, a thermal insulation layer, a sound absorption layer and a drainage layer are laid in sequence from top to bottom on the lower part of the heating floor; one end or both ends in the length direction of the heating floor body are provided with a plug-in structure for splicing with adjacent floors; one side or both sides in the width direction of the heating floor body are provided with a mounting structure for connecting with the floor mounting parts on the vehicle body.

[0006] The electric heating layer comprises a graphene heating film and insulating plates respectively arranged on the upper and lower surfaces of the graphene heating film, and conductive busbars connected to lead terminals are arranged at both ends of the graphene heating film.

[0007] The shielding / grounding layer comprises a copper mesh and insulating plates respectively arranged on the upper and lower surfaces of the copper mesh. The copper mesh is provided with a grounding wire for shielding electromagnetic interference and leakage protection.

[0008] A support for attenuating vehicle body vibration is arranged between the heating floor body and the vehicle body underframe.

[0009] The plug-in structure is a floor with a male plug at one end and a female socket at one end of the other floor. The upper and lower sides of the male plug are provided with offset limit steps, and the upper and lower sides of the female socket are provided with socket outer walls that respectively abut against the limit steps. The male plug and the female socket are gap-matched.

[0010] The bearing layer is specifically a multi-layer solid wood composite plywood.

[0011] The drainage layer is specifically a corrugated acetate fiber water guide plate; the sound-absorbing layer is specifically composed of an open-pore, elastic melamine resin sponge, a three-dimensional fine chain mesh structure, and the surface is reinforced with aluminum foil; the thermal insulation layer is specifically polyester fiber cotton with low thermal conductivity; the sound insulation layer is specifically a sound insulation pad with high acoustic performance.

[0012] The conductive busbar includes a first busbar and a second busbar, the first busbar includes a first conductive segment and a first lead connecting segment that completely contact and conduct one end of the graphene film, and the second busbar includes a second conductive segment and a second lead connecting segment that completely contact and conduct the other end of the graphene film.

[0013] The present invention provides an electric heating layer in the floor of a motor vehicle, and utilizes the electric heating layer to heat the floor so that the floor has a uniform heating function, and then heats the interior of the car through heat conduction and heat radiation, which can replace a small part of the functions of the air-conditioning system for heating. It has a simple structure, low equipment cost and maintenance cost, low energy consumption, and can significantly reduce the energy consumption cost of the air-conditioning system and the investment cost and maintenance expense of the heating equipment; at the same time, since the electric heating layer hardly generates noise when generating heat, it can greatly reduce noise compared with the hot air heating method, and improve the thermal efficiency of the car and the riding comfort; at the same time, since a drainage layer, a sound-absorbing layer, a heat-insulating layer and a sound-insulating layer are provided at the bottom, it can effectively guide condensed water, absorb and isolate external sounds, and reduce heat loss, especially prevent the bottom noise of the vehicle from entering the interior of the car body from the floor, further improve the insulation and quietness effect inside the car, and meet the riding comfort requirements, and the grounding layer has a leakage protection function when the floor is penetrated by a conductive object. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A front view of a specific implementation of the heating floor structure provided by the present invention;

[0015] Figure 2 It is a top partial cross-sectional view of an electric heating plate in a specific embodiment of a heated floor;

[0016] Figure 3 A layout diagram of a specific embodiment of a heated floor;

[0017] Figure 4 for Figure 3 AA section view;

[0018] Figure 5 for Figure 3 BB cross-sectional view.

[0019] In the figure:

[0020] 1. Bearing layer 2. Electric heating layer 3. Covering layer 4. Drainage layer 5. Sound absorbing layer

[0021] 6. Insulation layer 7. Sound insulation layer 8. Support 9. Mounting parts 10. Male socket

[0022] 11. Female socket 12. Upper shield / ground layer 13. Lower shield / ground layer

[0023] 21. Graphene film 22. Insulation board 23. First conduction section

[0024] 24. First lead connection section 25. Second conductive section 26. Second lead connection section

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0026] A specific embodiment of the present invention provides a heating floor for a multiple unit train, comprising an upper bearing layer 1, an electric heating layer 2, a lower bearing layer 1, a covering layer 3 laid on the upper part of the heating floor body, a drainage layer 4, a sound absorbing layer 5, a heat preservation layer 6 and a sound insulation layer 7 laid on the lower part of the heating floor body, as well as a support 8 and a mounting part 9 of the heating floor body, an upper shielding / grounding layer 12 and a lower shielding / grounding layer 13.

[0027] A composite electric heating layer is provided in the middle of the heating floor body bearing layer 1, the heating layer has the same area as the floor, and the heating layer can be set with a heating area according to the actual installation conditions of the floor.

[0028] The heating of the vehicle compartment is achieved by heating the electric heating layer 2, which has a simple structure, low equipment cost and maintenance cost, consumes less energy, avoids the noise generated by the heating system, and improves comfort.

[0029] Specifically, the electric heating layer 2 may include a graphene film 21 and insulating plates 22 respectively arranged on the upper and lower surfaces of the graphene film 21. Conductive busbars with lead terminals are arranged at both ends of the graphene film 21. The two insulating plates 22 completely wrap the graphene film 21 and the conductive busbars. At the same time, the conductive busbars are connected to the lead terminals through leads, and the lead terminals are connected to the power supply in the vehicle to provide power for the equipment.

[0030] Electricity is applied to both ends of the graphene film 21. Under the stimulation of electricity, the carbon molecular clusters produce Brownian motion, and the carbon molecules collide and rub against each other to generate heat energy, with a conversion efficiency of up to 99%. Compared with traditional heating equipment, it has a higher heat conversion rate and can reduce energy consumption. The graphene film 21 is a film printed from sheet graphene.

[0031] The graphene film 21 is used for heating. Since it does not need to occupy a special installation space, it can be installed on the ceiling or side wall in the car. It is small in size, high in heat conversion efficiency, and long in service life. It is safer and more environmentally friendly, and has fast heat transfer, uniform heating on the surface, stronger comfort, and better weather resistance. Of course, the heating layer can also use mesh carbon fiber and granular carbon crystal as heating components.

[0032] In the floor provided in the specific embodiment of the present invention, various materials can be used for each component, the bearing plate 1 is specifically plywood, the conductive busbar is specifically copper foil, and the insulating plate 22 is specifically an epoxy resin glass fiber composite insulating plate or a phenolic resin glass fiber composite insulating plate. The above materials have the advantages of not absorbing water, not being damp, not being moldy, and not being deformed; they reduce the cost of manual installation, are light in weight, and have excellent thermal insulation properties. Other materials can also be used according to the situation, all of which are within the protection scope of the present invention.

[0033] In the floor provided in a specific embodiment of the present invention, a drainage layer 4, a sound-absorbing layer 5, a thermal insulation layer 6, and a sound-insulating layer 7 are laid in order from bottom to top on the lower part of the heating floor body; the drainage layer 4 is specifically a corrugated acetate fiber water guide plate, and the condensed water generated by the alternation of hot and cold inside and outside the train can be discharged out of the car body through the drainage plate, so as to prevent the condensed water from staying in the car for a long time to destroy the functions of the sound-absorbing layer and the thermal insulation layer; the sound-absorbing layer 5 is specifically composed of an open-pore, elastic melamine resin sponge and a three-dimensional fine chain mesh structure, and the surface is reinforced with aluminum foil, which can absorb part of the noise from the outside; the thermal insulation layer 6 is specifically a polyester fiber cotton with a low thermal conductivity coefficient, which can effectively reduce the heat alternation inside and outside the car and play a role in heat preservation in the car; the sound insulation layer 7 is specifically a sound insulation pad with high acoustic performance, which is laid on the lower part of the heating floor and can isolate part of the noise from the chassis.

[0034] On the basis of the floor provided in each of the above specific embodiments, the conductive busbar includes a first busbar and a second busbar, the first busbar includes a first conductive section 23 and a first lead connection section 24 that are completely in contact with and conduct one end of the graphene film 21, and the second busbar includes a second conductive section 25 and a second lead connection section 26 that are completely in contact with and conduct the other end of the graphene film 21. The first conductive section 23 and the second conductive section 25 provide good conductive contact, so that the edges at both ends of the graphene film 21 can be electrically excited, thereby improving the utilization rate of the graphene film 21. At the same time, the first lead connection section 24 and the second lead connection section 26 are connected to the lead terminal through the lead to realize power supply.

[0035] Specifically, an upper shielding / grounding layer 12 and a lower shielding / grounding layer 13 are respectively arranged above and below the electric heating layer 2, and when the heating floor is in working state and is pierced by an external conductive object such as a screw, it plays a leakage protection function to prevent personal injury caused by leakage. At the same time, the shielding / grounding layers 12 and 13 can play an electromagnetic interference isolation role, which can isolate the electromagnetic interference of the heating floor to the control equipment in the car, and also isolate the electromagnetic interference of the control equipment in the car to the heating floor itself.

[0036] Specifically, the first lead connection section 24 is arranged in the middle of the outer side of the first conduction section 23, that is, the side of the first conduction section 23 away from the graphene film 21, the head end of the second lead connection section 26 is arranged at the end of the second conduction section 25 and extends to the first lead connection section 24, and an insulating space is arranged between the second lead connection section 26 and the graphene film 21 and the first busbar, that is, the second lead connection section 26 is arranged around the graphene film 21, so that its end is close to the first lead connection section 24, and at the same time, the insulating space is used to ensure that the components do not affect each other and complete the work. In the above manner, the first lead connection section 24 and the second lead connection section 26 are located at the same end of the graphene film 21, which is convenient for wiring and subsequent power supply.

[0037] One or both ends of the floor in the length direction are provided with a plug-in structure for splicing with adjacent floors. One or both sides of the floor in the width direction of the rail train are provided with mounting holes for connecting with the floor mounting parts 9 on the car body. Two adjacent EMU floors in the length direction are spliced ​​with each other through the plug-in structure, and metal parts and holes can be embedded in the EMU floor to facilitate the installation of the floor. The support 8 is laid in the middle of the floor, which can not only support the floor for bearing, but also reduce the vibration generated by the track and the car body during high-speed operation, thereby improving the riding comfort. The support 8 is a wooden frame or an elastic support seat. The plug-in structure at one end of the EMU floor is a male plug 10, and the plug-in structure at the other end is a female socket 11; the upper and lower sides of the male plug 10 have offset limit steps, and the upper and lower sides of the female socket 11 are provided with socket outer walls that respectively abut against the limit steps, and the male plug 10 and the female socket 11 are clearance-matched.

[0038] A corresponding control system can also be set up to control the power supply to the heated floor according to the temperature signal input from the vehicle's internal air-conditioning system, thereby adjusting the heating effect of the floor and further improving comfort.

[0039] The above is a detailed introduction to the EMU provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A heating floor structure for high-cold EMU, characterized by: The heating floor body comprises an upper bearing layer, an upper shielding / grounding layer, an electric heating layer, a lower shielding / grounding layer, and a lower bearing layer. A covering layer is laid on the upper part of the heating floor body, and a sound insulation layer, a thermal insulation layer, a sound absorption layer, and a drainage layer are laid in sequence from top to bottom on the lower part of the heating floor. The drainage layer is specifically a corrugated acetate fiber water guide plate; one end or both ends in the length direction of the heating floor body are provided with a plug-in structure for splicing with adjacent floors, and one side or both sides in the width direction of the heating floor body are provided with a mounting structure for connecting with a floor mounting part on a vehicle body; the shielding / grounding layer comprises a copper mesh and insulating plates respectively arranged on the upper and lower surfaces of the copper mesh, and the copper mesh is provided with a grounding wire for shielding electromagnetic interference and leakage protection.

2. The heating floor structure for high-cold EMU according to claim 1 is characterized by: The electric heating layer comprises a graphene film and insulating plates respectively arranged on the upper and lower surfaces of the graphene film, and conductive busbars connected to lead terminals are arranged at both ends of the graphene film.

3. The heating floor structure for high-cold EMU according to claim 1 is characterized by: A support for attenuating vehicle body vibration is arranged between the heating floor body and the vehicle body underframe.

4. The heating floor structure for high-cold EMU according to claim 1 is characterized by: The plug-in structure is a floor with a male plug at one end and a female socket at one end of the other floor. The upper and lower sides of the male plug are provided with offset limit steps, and the upper and lower sides of the female socket are provided with socket outer walls that respectively abut against the limit steps. The male plug and the female socket are gap-matched.

5. The heating floor structure for high-cold EMU according to claim 1 is characterized by: The bearing layer is specifically a multi-layer solid wood composite plywood.

6. The heating floor structure for high-cold EMU according to claim 1 is characterized by: The sound-absorbing layer is specifically composed of an open-pore elastic melamine resin sponge and a three-dimensional fine chain mesh structure, and the surface is reinforced with aluminum foil; the thermal insulation layer is specifically polyester fiber cotton with low thermal conductivity; and the sound insulation layer is specifically a sound insulation pad with high acoustic performance.

7. The heating floor structure for high-cold EMU according to claim 2 is characterized by: The conductive busbar includes a first busbar and a second busbar, the first busbar includes a first conductive segment and a first lead connecting segment that completely contact and conduct one end of the graphene film, and the second busbar includes a second conductive segment and a second lead connecting segment that completely contact and conduct the other end of the graphene film.

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