CN104176080A - Electric heating device of railway vehicle - Google Patents
Electric heating device of railway vehicle Download PDFInfo
- Publication number
- CN104176080A CN104176080A CN201410364309.9A CN201410364309A CN104176080A CN 104176080 A CN104176080 A CN 104176080A CN 201410364309 A CN201410364309 A CN 201410364309A CN 104176080 A CN104176080 A CN 104176080A
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- electric heating
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- adapter plate
- fixedly connected
- heating arrangement
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Abstract
The invention relates to an electric heating device of a railway vehicle. The electric heating device comprises a bottom plate assembly, an electric heating assembly and a cover plate, wherein the electric heating assembly and the cover plate are fixed on the bottom plate assembly; and the bottom plate assembly comprises a bottom plate, a mounting plate and a thermal isolating material, the bottom plate is fixed on the mounting plate, the top of the mounting plate is fixedly connected with the side wall of a vehicle body, an extending part extending downwards is arranged at the bottom of the mounting plate, the tail end of the extending part is fixedly connected with a floor profile in a guest room, and the thermal insulating material is padded between the bottom plate and the mounting plate. The electric heating device is compact in integral structure, the bottom of the mounting plate is directly and fixedly connected with the floor profile in the guest room, a press plate at the bottom of the cover plate fixes the edge of floor cloth on the mounting plate, the cost is reduced, the mounting process is simplified simultaneously, and the production efficiency is improved substantially.
Description
Technical field
The present invention relates to a kind of electric heating arrangement, particularly a kind of guideway vehicle electricity heating arrangement that is applicable to extremely frigid zones operation, belongs to guideway vehicle manufacturing technology field.
Background technology
In the car body of most of guideway vehicle, be all provided with at present for being winter the space heating apparatus that passenger heats, electrical heating elements is installed in space heating apparatus, electrical heating elements is fixed on adapter plate, adapter plate is fixed on vehicle body side wall, at arranged outside one cover plate, on cover plate, offer ventilation inlet and air outlet etc.In existing guideway vehicle, space heating apparatus is installed on the bottom of vehicle body side wall, its bottom is near floor, and in order to realize the transition between floor profile and framed side wallboard, edge on floor also needs to arrange Layering of floors, one side of Layering of floors is fixedly connected with floor profile, and another side is fixedly connected with vehicle body side wall.In vehicle assembling process, Layering of floors and space heating apparatus all need independent installation, and because space heating apparatus distance from bottom floor is nearer, install very inconveniently, and cost is higher.
In addition, on the guideway vehicle that existing space heating apparatus is only suitable for runing on Plain, use, and the guideway vehicle of area more than height above sea level 3600m operation uses, the temperature on the electric heating tube surface 20-30 DEG C that can raise, the cover plate surface temperature of the space heating apparatus 10-15 DEG C that can raise, this brings human discomfort the other passenger of space heating apparatus can to seat, and, if there are article to be placed in space heating apparatus, also can damage product, therefore space heating apparatus of the prior art cannot be applicable to the guideway vehicle in 3600m above high altitude region operation.
Summary of the invention
Main purpose of the present invention is to address the above problem and is not enough, a kind of compact conformation is provided, is beneficial to installation, the electric heating arrangement of the guideway vehicle of enhancing productivity, reducing costs.
For achieving the above object, technical scheme of the present invention is:
A kind of electric heating arrangement of guideway vehicle, comprise base plate composition, electro heat composition and cover plate, described electro heat composition and cover plate are fixed on described base plate composition, described base plate composition is made up of base plate, adapter plate and thermal insulation material, described base plate is fixed on described adapter plate, the top of described adapter plate is fixedly connected with vehicle body side wall, the bottom of described adapter plate has an extension to downward-extension, the end of described extension is fixedly connected with the floor profile in guest room, and described thermal insulation material is filled between described base plate and adapter plate.
Further, the bottom of described cover plate has a pressing plate to downward-extension, and described pressing plate is fixedly connected with the extension of described adapter plate bottom, described pressing plate by the edge of floor cloth be pressed abd fixed on described adapter plate above.
Further, between the pressing plate of described cover plate bottom and the extension of described adapter plate bottom, be fixedly connected with by riveting nut.
Further, the end lap of described adapter plate extension is on described floor profile edge and be fixedly connected with by fastener.
Further, the top of described adapter plate has a U-shaped structure, one side of described U-shaped structure is fixedly connected with by fastener with vehicle body side wall, another side has the slot that is mountain font, the top of described cover plate has the flanging of downward bending, and described flanging inserts in described slot and achieves a fixed connection.
Further, the inwall of described slot paving one deck felt.
Further, the top of described cover plate is downward-sloping S shape curve form.
Further, on described base plate composition, have an opening passing for connection lead, be provided with wire bushing at described opening part, described connection lead passes from wire bushing.
Further, described electro heat composition comprises at least one group of electric heating tube, and some radiating fins are evenly set on described electric heating tube, and described electric heating tube is fixed on described base plate composition by mounting bracket.
Further, every meter of power of described electric heating tube is equal to or less than 400W.
To sum up content, the electric heating arrangement of a kind of guideway vehicle provided by the present invention, compared with prior art, tool has the following advantages:
(1) the present invention is directly fixedly connected with the adapter plate bottom of electric heating arrangement with the floor profile in guest room, and utilize the pressing plate of cover plate bottom that the edge of floor cloth is fixed on adapter plate, the structures such as Layering of floors of the prior art are not only omitted, reduce cost, simplified installation process simultaneously, significantly improved production efficiency, and installation and repairing is very convenient.
(2) adapter plate is directly fixedly connected with floor profile, not only play effect attractive in appearance, can fill up the space between in-built underframe and framed side wallboard, avoid the water in guest room to enter underframe and framed side wallboard inside, can also prevent that pass-by noise from seeing through space and importing in car simultaneously.
(3) the present invention, by reasonable disposition heating power, simultaneously by optimal design heat insulation structural, has met the requirement of high height above sea level operation, and this electricity heating arrangement can be installed on the guideway vehicle of height above sea level area operation below 3600.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is base plate composition structural representation of the present invention;
Fig. 3 is the side direction view of Fig. 2;
Fig. 4 is cover plate structural representation of the present invention.
As shown in Figures 1 to 4, base plate composition 1, electro heat composition 2, cover plate 3, vehicle body side wall 4, base plate 5, adapter plate 6, thermal insulation material 7, bolt 8, U-shaped structure 9, bolt 10, chute 11, slot 12, flanging 13, extension 14, floor profile 15, countersunkrivet 16, glue 17, pressing plate 18, riveting nut 19, floor cloth 20, ventilation inlet 21, air outlet 22, electric heating tube 23, mounting bracket 24, bolt 25, connection box 26, radiating fin 27, opening 28, wire bushing 29, connection lead 30, in-built framed side wallboard 31.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
As shown in Figures 1 to 4, the electric heating arrangement of a kind of guideway vehicle provided by the present invention, electricity heating arrangement is along the elongated bottom that is installed on guest room side wall of car body longitudinal direction, comprise base plate composition 1, electro heat composition 2 and cover plate 3, electro heat composition 2 and cover plate 3 are fixed on base plate composition 1, and base plate composition 1 is fixed on vehicle body side wall 4.
Wherein, base plate composition 1 is made up of base plate 5, adapter plate 6 and thermal insulation material 7.For expendable weight, adapter plate 6 adopts aluminium sheet, and 5 of base plates adopt stainless steel sheet to protect its installation strength.
As shown in Figure 1 to Figure 3, the top of adapter plate 6 has the U-shaped structure 9 of a upward opening, one side of U-shaped structure 9 is fixedly connected with by bolt 10 with vehicle body side wall 4, on vehicle body side wall 4, be provided with oblong chute 11, the head of bolt 10 inserts also can be in the interior slip of chute 11 in chute 11, so conveniently determine restraint location according to on-the-spot installation situation, reduce installation difficulty, improve installation effectiveness.For fear of form cold bridge in junction, one deck heat insulating mattress (not indicating in figure) is set between adapter plate 6 and vehicle body side wall 4, interchange of heat between avoiding to greatest extent in car body and car, improve the efficiency of heating surface of heating arrangement, this heating arrangement can be applied at high height above sea level extremely frigid zones.Another side of U-shaped structure 9 has the slot 12 that is mountain font, the top of cover plate 3 has the flanging 13 of downward bending, flanging 13 inserts in a socket in slot 12 and realizes being fixedly connected with between cover plate 3 and adapter plate 6, in-built framed side wallboard 31 in another socket and guest room in slot 12 is pegged graft fixing, make cover plate 3 and fabulous the combining together of in-built framed side wallboard 31, ensure the aesthetics in guest room.Meanwhile, in the present embodiment, between adapter plate 6 and cover plate 2, transmit cold, simultaneously for fear of occur noise in vehicle operating process, in the inwall upper berth of slot 12 one deck felt (not shown), flanging 13 is inserted in felt.
In the present embodiment, the bottom of adapter plate 6 has an integrated extension 14 to downward-extension, extension 14 is cambered surface, the end of extension 14 is fixedly connected with the floor profile 15 in guest room, the end lap of adapter plate 6 extensions 14 is on floor profile 15 edges, be fixedly connected with by countersunkrivet 16, one deck heat insulating mattress is set in junction, avoid forming in junction cold bridge.The bottom of adapter plate 6 is directly fixedly connected with floor profile 15, realize the transition between floor profile 15 and vehicle body side wall 4, make up the space between floor profile 15 and vehicle body side wall 4, not only beautify outward appearance, also avoided the water in guest room to enter floor profile 15 and vehicle body side wall 4 inside, simultaneously, the structures such as Layering of floors of the prior art are omitted, reduce cost, in the time that adapter plate 6 is installed, directly by shutoff the space between floor profile 15 and vehicle body side wall 4, simplify installation process, significantly improve production efficiency, in addition, this structure can also effectively prevent that pass-by noise from seeing through space and importing in car.
Base plate 5 is a U-shaped plate, be fixedly mounted on adapter plate 6 by multiple bolts 8, between base plate 5 and adapter plate 6, form a cavity, in cavity, fill up thermal insulation material 7, effectively avoid the heat of heating arrangement to be delivered to outdoor by adapter plate 6 and base plate 5 and bolt 8 etc., reduce thermal loss, this heating arrangement can be applied at high height above sea level extremely frigid zones.In order further to avoid thermal loss, between the lower surface on the upper surface of base plate 5 top margins, base and adapter plate 6, all beat one deck for heat insulation glue 17, also can adopt the thermal insulation material such as heat insulating mattress, felt, between the medial surface of the edge of base plate 5 and adapter plate 6, also beat for heat insulation glue, in heat insulation, also effectively avoid producing vibrating noise.
As shown in Figure 3, electro heat composition 2 comprises the electric heating tube 23 of two groups of U-shapeds, electric heating tube 23 adopts corrosion-resistant steel tubular electric heating element, and electric heating tube 23 is fixed on base plate 5 by mounting bracket 24 clampings of " 3 " shape of multiple being, and mounting bracket 24 center is fixedly connected with base plate 5 by bolt 25.In the present embodiment, be provided with some radiating fins 27 on electric heating tube 23, to increase dissipating area, improve radiating efficiency, in the present embodiment, radiating fin 27 preferably adopts aluminum alloy radiating fin, not only perfect heat-dissipating of aluminium sheet radiating fin, and also quality is light.Between two groups of electric heating tubes 23, fixedly mount connection box 26.
On base plate 5, adapter plate 6, there is an opening 28, the connection lead such as electric wire and signal wire (SW) 30 of two groups of electric heating tubes 23, connection box 26 all passes from this opening 28, in order to prevent electric wire wearing and tearing, at opening 28 places, a wire bushing 29 is set, wire bushing 29 is made up of flame retardant rubber, wire bushing 29 closely fastens at opening 28 places, and also closely fixing between connection lead 30.The gap of connection lead 30 between adapter plate 6 back sides and vehicle body side wall 4, draw with miscellaneous equipments such as power supplys and be connected.
In the present embodiment, test by low pressure storehouse, final every meter of power determining electric heating tube 23 is less than or equal to 400W, every cubic meter power is less than 29200W, preferably every meter of power of electric heating tube 23 is less than or equal to 185W, electric heater unit is less than 23000W at the every cubic meter power of entirety, the dielectric strength of electric heating tube 23 3400V under 50Hz state, lasting 1min should be without flashover, punch through.In height above sea level 3600m situation, electric heating tube 23 hot face temperatures are less than 180 DEG C, and cover plate 3 surface temperatures also can be less than 65 DEG C, meet the requirement of high height above sea level operation completely, therefore, this electricity heating arrangement can be installed on the guideway vehicle of the height above sea level operation of area below 3600 meters.
In the present embodiment, as shown in Figure 4, the section of cover plate 3 also roughly takes the shape of the letter U, on cover plate 3, have multiple ventilation inlets 21 and air outlet 22, ventilation inlet 21 is opened on the base of cover plate 3, air outlet 22 is opened on the sidewall of cover plate 3, ventilation inlet 21 and air outlet 22 all adopt slotted hole, the base of cover plate 3 is apart from the distance of nearly 40mm between floor cloth 20, cold air carries out interchange of heat with electric heating tube 23 from the ventilation inlet 21 of bottom enters, and the air outlet 22 of the hot air after heating from sidewall enters in guest room.
The bottom of cover plate 3 has an integrated pressing plate 18 to downward-extension, and pressing plate 18 bends downwards along the base of cover plate 3, between pressing plate 18 and the extension 14 of adapter plate 6 bottoms, is fixedly connected with by riveting nut 19, improves the installation efficiency of cover plate 3.Simultaneously, pressing plate 18 matches with the shape of the extension 14 of adapter plate 6 bottoms, in the time that pressing plate 18 is installed, by the edge of floor cloth 20 be also pressed abd fixed in the lump adapter plate 6 above, framing member without other for fixed floor cloth 20, also omit a lot of installation steps, further improved production efficiency.For fear of cold bridge, one deck heat insulating mattress (not shown) is set between pressing plate 18 and extension 14.The top of cover plate 3 is downward-sloping S shape curve form, so also can avoid passenger that article are placed on cover plate 3, also can avoid passenger that pin is trampled on cover plate 3 simultaneously.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings.In every case be the content that does not depart from technical solution of the present invention, any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. the electric heating arrangement of a guideway vehicle, comprise base plate composition, electro heat composition and cover plate, described electro heat composition and cover plate are fixed on described base plate composition, it is characterized in that: described base plate composition is made up of base plate, adapter plate and thermal insulation material, described base plate is fixed on described adapter plate, the top of described adapter plate is fixedly connected with vehicle body side wall, the bottom of described adapter plate has an extension to downward-extension, the end of described extension is fixedly connected with the floor profile in guest room, and described thermal insulation material is filled between described base plate and adapter plate.
2. the electric heating arrangement of a kind of guideway vehicle according to claim 1, it is characterized in that: the bottom of described cover plate has a pressing plate to downward-extension, described pressing plate is fixedly connected with the extension of described adapter plate bottom, described pressing plate by the edge of floor cloth be pressed abd fixed on described adapter plate above.
3. the electric heating arrangement of a kind of guideway vehicle according to claim 2, is characterized in that: between the pressing plate of described cover plate bottom and the extension of described adapter plate bottom, be fixedly connected with by riveting nut.
4. the electric heating arrangement of a kind of guideway vehicle according to claim 1, is characterized in that: the end lap of described adapter plate extension is on described floor profile edge and be fixedly connected with by fastener.
5. the electric heating arrangement of a kind of guideway vehicle according to claim 1, it is characterized in that: the top of described adapter plate has a U-shaped structure, one side of described U-shaped structure is fixedly connected with by fastener with vehicle body side wall, another side has the slot that is mountain font, the top of described cover plate has the flanging of downward bending, and described flanging inserts in described slot and achieves a fixed connection.
6. the electric heating arrangement of a kind of guideway vehicle according to claim 5, is characterized in that: inwall paving one deck felt of described slot.
7. the electric heating arrangement of a kind of guideway vehicle according to claim 1, is characterized in that: the top of described cover plate is downward-sloping S shape curve form.
8. the electric heating arrangement of a kind of guideway vehicle according to claim 1, is characterized in that: on described base plate composition, have an opening passing for connection lead, be provided with wire bushing at described opening part, described connection lead passes from described wire bushing.
9. the electric heating arrangement of a kind of guideway vehicle according to claim 1, it is characterized in that: described electro heat composition comprises at least one group of electric heating tube, some radiating fins are evenly set on described electric heating tube, and described electric heating tube is fixed on described base plate composition by mounting bracket.
10. the electric heating arrangement of a kind of guideway vehicle according to claim 9, is characterized in that: every meter of power of described electric heating tube is equal to or less than 400W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364309.9A CN104176080B (en) | 2014-07-29 | 2014-07-29 | Electric heating device of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364309.9A CN104176080B (en) | 2014-07-29 | 2014-07-29 | Electric heating device of railway vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN104176080A true CN104176080A (en) | 2014-12-03 |
| CN104176080B CN104176080B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410364309.9A Active CN104176080B (en) | 2014-07-29 | 2014-07-29 | Electric heating device of railway vehicle |
Country Status (1)
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| CN (1) | CN104176080B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799720A (en) * | 2016-05-13 | 2016-07-27 | 中车青岛四方机车车辆股份有限公司 | Explosion-proof electric heater and railway vehicle with same |
| RU2610752C1 (en) * | 2015-11-16 | 2017-02-15 | Открытое акционерное общество "Тверской вагоностроительный завод" (ОАО "ТВЗ") | Lining of vehicle ventilation and heating system |
| CN106553658A (en) * | 2016-11-09 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | A kind of seat pencil routing method used for rail vehicle and wire structures |
| CN112977513A (en) * | 2019-12-17 | 2021-06-18 | 中车唐山机车车辆有限公司 | Rail vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2462319A1 (en) * | 1979-07-27 | 1981-02-13 | Budd Co | Railway carriage heating system - uses electric elements inside cover grill at floor level with vents taking some heated air to window level(PT 14.1.81) |
| US4343507A (en) * | 1979-06-07 | 1982-08-10 | Duewag Aktiengesellschaft | Mounting arrangement for a ventilation or heating system for vehicles |
| CN201136501Y (en) * | 2007-12-20 | 2008-10-22 | 南车四方机车车辆股份有限公司 | Installation apparatus for electric heater in rail vehicle |
| CN201338612Y (en) * | 2008-12-29 | 2009-11-04 | 南车南京浦镇车辆有限公司 | Heating device of railway vehicle |
| KR20090117236A (en) * | 2008-05-09 | 2009-11-12 | (주) 제일데코 | Heater cover |
| CN202294835U (en) * | 2011-10-31 | 2012-07-04 | 长春轨道客车股份有限公司 | Cab electric heater structure |
| CN203996247U (en) * | 2014-07-29 | 2014-12-10 | 南车青岛四方机车车辆股份有限公司 | A kind of electric heating arrangement of guideway vehicle |
-
2014
- 2014-07-29 CN CN201410364309.9A patent/CN104176080B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343507A (en) * | 1979-06-07 | 1982-08-10 | Duewag Aktiengesellschaft | Mounting arrangement for a ventilation or heating system for vehicles |
| FR2462319A1 (en) * | 1979-07-27 | 1981-02-13 | Budd Co | Railway carriage heating system - uses electric elements inside cover grill at floor level with vents taking some heated air to window level(PT 14.1.81) |
| CN201136501Y (en) * | 2007-12-20 | 2008-10-22 | 南车四方机车车辆股份有限公司 | Installation apparatus for electric heater in rail vehicle |
| KR20090117236A (en) * | 2008-05-09 | 2009-11-12 | (주) 제일데코 | Heater cover |
| CN201338612Y (en) * | 2008-12-29 | 2009-11-04 | 南车南京浦镇车辆有限公司 | Heating device of railway vehicle |
| CN202294835U (en) * | 2011-10-31 | 2012-07-04 | 长春轨道客车股份有限公司 | Cab electric heater structure |
| CN203996247U (en) * | 2014-07-29 | 2014-12-10 | 南车青岛四方机车车辆股份有限公司 | A kind of electric heating arrangement of guideway vehicle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2610752C1 (en) * | 2015-11-16 | 2017-02-15 | Открытое акционерное общество "Тверской вагоностроительный завод" (ОАО "ТВЗ") | Lining of vehicle ventilation and heating system |
| CN105799720A (en) * | 2016-05-13 | 2016-07-27 | 中车青岛四方机车车辆股份有限公司 | Explosion-proof electric heater and railway vehicle with same |
| CN106553658A (en) * | 2016-11-09 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | A kind of seat pencil routing method used for rail vehicle and wire structures |
| CN106553658B (en) * | 2016-11-09 | 2019-06-21 | 中车青岛四方机车车辆股份有限公司 | A kind of seat pencil routing method used for rail vehicle and wire structures |
| CN112977513A (en) * | 2019-12-17 | 2021-06-18 | 中车唐山机车车辆有限公司 | Rail vehicle |
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| CN104176080B (en) | 2017-02-15 |
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Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant after: CRRC QINGDAO SIFANG CO., LTD. Address before: Jihongtan town Chengyang District Shandong city Qingdao province Jinhong road 266111 No. 88 Applicant before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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