CN209022824U - Refrigerated Railway Cars roof construction and refrigerator car - Google Patents

Abstract

The utility model discloses a kind of refrigerator car roof and refrigerator cars.Roof therein includes Wai Ding, interior top and foam insulation, and outer top includes the outer top panel in the first arc；Interior top includes the inner top panel in the second arc, and the second arc is located at the axially inner side of the first arc, and outer top panel and inner top panel form a filling space, and foam insulation fills sealing space；Foam insulation includes by the prefabricated heat insulation of polyurethane and by the foaming layer of polyurethane on-the-spot foam, heat insulation is provided with multiple, multiple heat insulations are arranged between outer top panel and inner top panel, sealing space is divided into multiple independent foaming spaces, foaming layer filling-foam space by multiple heat insulations.The utility model can effectively improve the heat-proof quality and air-tightness of refrigerator car, have preferable economic results in society.

Description

Refrigerated Railway Cars roof construction and refrigerator car

Technical field

The utility model belongs to railway cold chain technology field more particularly to a kind of refrigerator car roof and refrigerator car.

Background technique

The fresh and alive perishable goods of refrigerated railway car prevailing traffic, car body are equipped with thermal insulation layer and are kept the temperature, and thermal insulation layer is mainly filled out Fill formula and two kinds of foaming type.Filled type thermal insulation layer is exactly the cavity shape for forming heat-insulating heat-preserving material according to inner panel and outside plate, It is divided into fritter to be filled one by one, the main material of the heat-insulated material of filled type is polystyrene rigid foam.Foaming type is heat-insulated Layer filling polyurethane foamed material, foamed material mainly in the cavity that inner panel and outside plate are formed are formed high by chemical reaction Molecularly Imprinted Polymer, volume expansion fill entire cavity and form whole thermal insulation layer.

The heat-barrier material of filled type thermal insulation layer is to carry out the splicing of fritter scene according to insulating layer cavity size and shape, is existed Splice gap, and the gap in all components cannot be filled, influences heat insulation.The polystyrene that filled type heat-barrier material uses Rigid foam has water imbibition, and absorbs water and easily shrink, the fresh and alive perishable goods of refrigerator car prevailing traffic, air humidity between goods Greatly, in vehicle with after a certain period of time, heat-barrier material water-absorbing shrinkable causes to assemble interstitial gap increasing, between some formation perforations Gap forms heat bridge, seriously affects the heat-proof quality and air-tightness of cold chain equipment.Foamed material is fillable all in foaming type thermal insulation layer Space forms a whole thermal insulation layer, and polyurethane foam does not absorb water, and it is good to can guarantee that thermal insulation layer has in the entire life cycle phase Good thermal insulation and air-tightness.

Currently, both at home and abroad in technologically advanced cold chain equipment, the slab constructions such as side wall, headwall, flat-top be all made of foaming every Heat structure is thermally shielded.And the refrigerator car with circular arc roof, because of roof structure complexity, volume is big, the foaming matter of foaming heat insulation Amount it cannot be guaranteed that etc. composite factors, be all made of filled type heat insulation structural, the heat-insulated roof of filled type becomes the country because of poor thermal insulation property The outer most important cold draining point of refrigerated railway car, seriously affects the synthesis heat-proof quality of refrigerated railway car.

In the process of implementing the utility model, it is found by the applicant that in the prior art the prior art has at least the following problems:

It is limited by China railways limit, to increase interior volume, the roof of China railways refrigerator car is all made of dome knot Structure.Because circular arc roof structure is unsatisfactory for integral foam, it is all made of polystyrene rigid foam and is filled, i.e., according to roof Polystyrene rigid foam is imitated type and is cut into the live spelling of fritter progress by the cavity shape that outside plate and roof inner panel are formed Dress., can not be completely closely connected using polystyrene rigid foam since there are errors for the manufacture of circular arc roof, there are clipping rooms Gap, and polystyrene rigid foam has water-absorbing shrinkable characteristic, especially piece shrinks to form penetrating gap, reduce vehicle every Therefore hot property and air-tightness need to improve the prior art.

Utility model content

In view of the above-mentioned problems of the prior art, the utility model provides a kind of Refrigerated Railway Cars roof construction and refrigeration Vehicle.

The utility model achieves the above object through the following technical schemes:

Firstly, the utility model provides a kind of refrigerator car roof, the roof includes Wai Ding, interior top and foaming heat insulation Layer, in which:

The outer top includes outer top panel, and the outer top panel is in the first arc；

The interior top includes inner top panel, and the inner top panel is in the second arc, and second arc is located at first arc Radially inner side, between the outer top panel and the inner top panel constitute filling space；

The foam insulation fills the filling space, and the foam insulation includes by prefabricated heat-insulated of polyurethane Block and foaming layer by polyurethane on-the-spot foam, the heat insulation are provided with multiple, and multiple heat insulations are along the filling Space is divided into multiple independent foaming spaces, and the foaming space is filled in the foaming layer.

Further, multiple heat insulations being provided at circumferentially spaced in the outer top panel and inner top panel along the outer top panel Between.

Further, the interior top further includes the second side bar, and there are four the second side bar settings, four second sides Beam is separately positioned on the circumferential two sides of the inner top panel and the axial sides of the inner top panel；

The outer top panel is provided with multiple connection components, the connection component and institute on the side towards the inner top panel The second side bar is stated to be correspondingly arranged, each connection component include it is multiple in column arrangement connection iron, second side bar and The connection iron of the corresponding connection component connects, to realize the connection of outer top panel and inner top panel.

Further, the interior top further includes multiple interior camber beams, and multiple interior camber beams are arranged at intervals on the inner top panel Towards on the side of the outer top panel, the both ends of each interior camber beam are connected on two second side bars, to add The structure of strong inner top panel.

Further, the interior top further includes interior beam, and the middle part of each interior camber beam is connected by the interior beam It connects, further to reinforce the structure of inner top panel；

The outer top panel is additionally provided with corresponding with the interior beam position on the side towards the inner top panel The connection iron of connection component, the interior beam and the corresponding connection component connects, to further strengthen outer top panel and interior top The connection of plate.

Preferably, the interior camber beam is Z-shape, and camber beam interior in this way can be inserted into foaming layer by a part, to reinforce sending out The connection of alveolar layer and inner top panel.

Further, the outer top includes side bar, longitudinal beam and outer camber beam, and there are two the side bar settings, described in two Side bar is separately positioned on the circumferential two sides of the outer top panel, and the outer camber beam is provided with multiple, and multiple outer camber beam intervals are set It sets in the outer top panel towards on the side of the inner top panel, the both ends of each outer camber beam are connected to two sides The middle part of Liang Shang, multiple outer camber beams are connected by the longitudinal beam, to reinforce the structure of outer top panel.

Further, the outer top further includes fixed iron, is arranged at intervals on each outer camber beam multiple described solid Determine iron, the fixed iron has a fixed pan being arranged radially along the outer top panel, the heat insulation and the outer camber beam It is correspondingly arranged, the heat insulation is bonded the fixed pan setting of the fixation iron on the corresponding outer camber beam, to heat insulation Installation provides positioning.

Again, the utility model additionally provides a kind of foaming method based on above-mentioned refrigerator car roof, the foaming method Include:

Outer top panel and inner top panel are provided, and outer top panel and inner top panel are placed on foaming mould；

By by the prefabricated multiple heat insulations of polyurethane along outer top panel be provided at circumferentially spaced outer top panel and inner top panel it Between, the space between outer top panel and inner top panel is divided into multiple independent foaming spaces by multiple heat insulations；

Foamed material is injected in each independent foaming space；

On foaming mould, by the circumferential both sides sealing of the circumferential two sides of outer top panel and inner top panel, the axial direction two of outer top panel The sealing of the axial sides of side and inner top panel makes outer top panel and inner top panel form a sealing space；

After forming sealing space, foamed material foaming and intumescing forms foaming layer, and foaming layer is by outer top panel, inner top panel and heat insulation It connects integral.

Finally, the utility model also provides a kind of refrigerator car, the refrigerator car includes above-mentioned refrigerator car roof.

The beneficial effects of the utility model are:

A kind of refrigerator car provided by the utility model, since roof therein includes Wai Ding, interior top and foaming heat insulation Layer, and the outer top panel pushed up outside is in the first arc, the inner top panel on interior top is in the second arc, and the second arc is located at the axial direction of the first arc Inside just constitutes a filling space for foam insulation filling, does not have in the filling space between outer top panel and inner top panel Other structures object is separated, and is that a volume is big, structure simply fills space, simultaneously as multiple heat insulation edges therefore Outer top panel is provided at circumferentially spaced between outer top panel and inner top panel, and sealing space can be divided into multiple by multiple heat insulations Independent foaming space provides possibility to use on the roof of refrigerator car for foaming type heat-insulating technique.

When foaming to roof, each independent foaming space needs to be sealed on foaming mould, after sealing, respectively The foamed material foaming and intumescing injected in a independent foaming space forms foaming layer, and foaming layer connects Wai Ding, interior top and heat insulation It is connected into entirety, easy to operate, quality is stablized, and can effectively improve the heat-proof quality and air-tightness of refrigerator car, has preferable society Economic benefit.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of structural schematic diagram of refrigerator car roof of the utility model embodiment；

Fig. 2 is the structural schematic diagram on the outer top in Fig. 1；

Fig. 3 is the structural schematic diagram on the interior top in Fig. 1；

Fig. 4 is the diagrammatic cross-section of Fig. 1；

Fig. 5 is the structural schematic diagram of the fixation iron in Fig. 4；

Fig. 6 is the structural schematic diagram of the connection iron in Fig. 2；

Fig. 7 is the structural schematic diagram of interior camber beam in Fig. 3；

Fig. 8 withstands on schematic diagram when foaming for the Refrigerated Railway Cars in the utility model embodiment.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Since the roof structure of refrigerator car arc-shaped in the prior art is complicated, volume is big, improper to use on roof The heat-insulated technique of foaming type is thermally shielded, and is based on this, and the utility model embodiment improves this, is designed a kind of properly using hair The refrigerator car roof that the heat-insulated technique of bubble is thermally shielded.

Firstly, the utility model embodiment provides a kind of refrigerator car roof.

Fig. 1 is a kind of structural schematic diagram of refrigerator car roof of the utility model embodiment, and Fig. 2 is the outer top in Fig. 1 Structural schematic diagram, Fig. 3 are the structural schematic diagram on the interior top in Fig. 1, and Fig. 4 is the diagrammatic cross-section of Fig. 1, in conjunction with Fig. 1, Fig. 2, Fig. 3 And Fig. 4, the refrigerator car roof of the utility model embodiment include Wai Ding, interior top and foam insulation.

In conjunction with Fig. 1 and Fig. 2, the outer top of the utility model embodiment includes outer top panel 1, and outer top panel 1 is in the first arc.

In conjunction with Fig. 1 and Fig. 3, the interior top of the utility model embodiment includes inner top panel 2, and inner top panel 2 is in the second arc, and second Arc is located at the radially inner side of the first arc.

One is constituted in conjunction with Fig. 1, between the outer top panel and inner top panel of the utility model embodiment to fill for foam insulation Filling space, separated in the filling space without other structures object, be that a volume is big, structure is simply filled out therefore Fill space.

In conjunction with Fig. 4, the foam insulation of the utility model embodiment includes by the prefabricated heat insulation 3 of polyurethane and passing through The foaming layer 4 of polyurethane on-the-spot foam, heat insulation 3 be provided with it is multiple, the setting of multiple heat insulations 3 outer top panel 1 and inner top panel 2 it Between, sealing space is divided into multiple independent foaming spaces by multiple heat insulations 3, to be foaming type heat-insulating technique in refrigerator car Roof on provide may, 4 filling-foam space of foaming layer, so that foaming layer, outer top panel, inner top panel are connected with heat insulation It is integral, form the Refrigerated Railway Cars roof construction with good heat-proof quality and air-tightness.

The heat insulation 3 of the utility model embodiment and foaming layer 4 are made due to being all made of polyurethane, since polyurethane has Preferable heat-proof quality, does not absorb water, and integral foam can fill up all gaps between Wai Ding and interior top, easy to operate, quality Stablize, the heat-proof quality and air-tightness of refrigerator car can be effectively improved.

In the utility model embodiment, multiple heat insulations 3 are provided at circumferentially spaced along outer top panel 1 in outer top panel 1 and interior top Between plate 2.Certain multiple heat insulations 3 can also use other arrangements, such as along the axial direction of outer top panel 1, or along outer top Axial and circumferential mixed-arrangement of plate 1 etc., the utility model embodiment to this with no restriction.

In conjunction with Fig. 1 and Fig. 2, in the utility model embodiment, outer top can also include the first side bar 5, the setting of the first side bar 5 There are two, two the first side bars 5 are separately positioned on the circumferential two sides of outer top panel 1.

In conjunction with Fig. 1 and Fig. 2, the first side bar 5 in the utility model embodiment is V-shaped, with certain gradient, with It is connected in the side wall with refrigerator car.

Further, in conjunction with Fig. 2, in the utility model embodiment, outer top can also include longitudinal beam 7 and multiple excurvations Beam 8, multiple outer camber beams 8 are arranged at axially spaced intervals in outer top panel 1 towards on the side of inner top panel 2 along outer top panel 1, each outer camber beam 8 both ends are connected on two the first side bars 5, and the middle part of multiple outer camber beams 8 is connected by longitudinal beam 7, to outer top panel 1 Structure reinforced.

Further, in conjunction with Fig. 2 and Fig. 4, the outer camber beam 8 of the utility model embodiment can be L-shaped, outer camber beam 8 and every Heat block 3 is correspondingly arranged, and outer camber beam 8 is assemblied in the corner of heat insulation 3, to position to heat insulation 3.

In conjunction with Fig. 2 and Fig. 4, the outer top of the utility model embodiment can also include fixed iron 10, each on outer camber beam 8 Multiple fixed iron 10 are arranged at intervals with, fixed iron 10 has a fixed pan being arranged radially along outer top panel 1, and heat insulation 3 pastes It closes on the fixed pan of the fixation iron 10 on corresponding outer camber beam 8.Fixed iron 10 can position heat insulation 3, with side Just the assembly of heat insulation 3.

Fig. 5 is the structural schematic diagram of the fixation iron in Fig. 2, in conjunction with Fig. 2, Fig. 4 and Fig. 5, in the utility model embodiment, Gu Determining iron 10 can also be L-shaped, is made of the first connecting plate 10.1 and the first plugboard 10.2, and one of the first connecting plate 10.1 Side is the fixed pan of above-mentioned fixed iron 10, and the side of the first connecting plate 10.1 can assemble by welding On outer camber beam 8, the first plugboard 10.2 can be fixed on the first connecting plate 10.1 by the modes such as being integrally formed or welding, Plugboard 10.2 is inserted into foaming layer 4, to reinforce the connection of foaming layer 4, heat insulation 3 and outer top panel 1, improves the whole of connection Body.

It should be noted that the shape of fixed iron 10 may be the other shapes such as T shape, the utility model embodiment is to this With no restriction.

In conjunction with Fig. 1 and Fig. 3, the interior top of the utility model embodiment further includes the second side bar 6, and the second side bar 6 is provided with four A, four the second side bars 6 are separately positioned on the circumferential two sides of inner top panel 2 and the axial sides of inner top panel 2.

In conjunction with Fig. 2, in the utility model embodiment, multiple companies are provided on the side towards inner top panel 2 in outer top panel 1 Connected components, connection component and the second side bar 6 are correspondingly arranged, and each connection component includes multiple connection iron 9 in column arrangement, the The connection of the connection iron 9 of two side bars 6 and corresponding connection component to realize the connection of outer top panel 1 and inner top panel 2, and then is reinforced outer Connection between top plate, inner top panel 2 and foam insulation.

In conjunction with Fig. 3, the interior top of the example of the utility model further includes multiple interior camber beams 11 and an interior beam 12, multiple interior curved Beam 11 is arranged at intervals on inner top panel 2 towards on the side of outer top panel 1, it is each in the both ends of camber beam 11 be connected to two second On side bar 6, the middle part of each interior camber beam 11 is connected by interior beam 12, is reinforced with the structure to inner top panel 2.

In conjunction with Fig. 2, the outer top panel 1 of the utility model embodiment is on the side towards inner top panel 2 in corresponding interior beam 12 Place is additionally provided with a connection component, the connection of connection iron 9 of interior beam 12 and corresponding connection component, further to outer top panel 1 and the connection of inner top panel 2 reinforced.

Fig. 6 is the structural schematic diagram of the connection iron in Fig. 2, in conjunction with Fig. 2 and Fig. 6, the connection iron 9 of the utility model embodiment It is L-shaped, it is made of fixed plate 9.1 and the second connecting plate 9.2, fixed plate 9.1 can weld etc., and modes are connected to outer top panel 1 On, the second connecting plate 9.2 can be fixed in fixed plate 9.1 by the modes such as being integrally formed or welding, and the second connecting plate 9.2 is not It is only inserted into foaming layer 4, it, can also be with inner top panel 2 to realize the purpose of the connection reinforcement of foaming layer 4 and outer top panel 1 On the mode I that is connected by screw bolts of the second side bar 6 and interior beam 12 assembled, outer top panel 1 and inner top panel 2 are carried out It is fixedly connected.

It should be noted that the shape of connection iron 9 may be the other shapes such as T shape, the utility model embodiment is to this With no restriction.

Fig. 7 is the structural schematic diagram of interior camber beam in Fig. 3, and in conjunction with Fig. 7, the interior camber beam 11 of the utility model embodiment is preferably in It is Z-shaped, it is made of third connecting plate 11.1, the 4th connecting plate 11.2 and the second plugboard 11.3, third connecting plate 11.1 can It is mounted on inner top panel 2 in a manner of through riveting etc., the second plugboard 11.3 and third connecting plate 11.1 pass through the 4th connecting plate 11.2 connections, and the second plugboard 11.3 and third connecting plate 11.1 are located at the two sides of the 4th connecting plate 11.2, the 4th connects Fishplate bar 11.2 and the second plugboard 11.3 are inserted into foaming layer 4, to reinforce between inner top panel 2 and foaming layer 4 Connection, guarantees the globality of roof structure.

It should be noted that interior camber beam 11 is integrated formed structure in the utility model embodiment, it may be L shape Or the other structures form such as T shape, the utility model embodiment to this with no restriction.

In addition, being all steel welding structure since outer top is vehicle load bearing component；And the inner top panel in interior top is predominantly not Become rusty the material with higher antiseptic property such as steel, aluminium alloy or non-metal board, and interior beam, interior camber beam and the second side bar be every The preferable non-metallic material of hot property, for example, it is wooden etc., with preferable heat insulation effect.

Again, it is based on above-mentioned refrigerator car roof, the utility model embodiment additionally provides a kind of foaming of refrigerator car roof Method.

Fig. 8 withstands on schematic diagram when foaming for the Refrigerated Railway Cars in the utility model embodiment, in conjunction with Fig. 8, the foaming side Method includes:

Outer top panel 1 and inner top panel 2 are provided, and outer top panel 1 and inner top panel 2 are placed on foaming mould 13；

By multiple heat insulations 3 being provided at circumferentially spaced in outer top panel 1 and inner top panel along outer top panel 1 prefabricated by polyurethane Between 2, the space between outer top panel 1 and inner top panel 2 is divided into multiple independent foaming spaces by multiple heat insulations 3；

Foamed material is injected in each independent foaming space；

On foaming mould 13, by the circumferential both sides sealing of the circumferential two sides of outer top panel 1 and inner top panel 2, the axis of outer top panel 1 It is sealed to the axial sides of two sides and inner top panel 2, outer top panel 1 and inner top panel 2 is made to form a sealing space；

Formed sealing space after, foamed material foaming and intumescing formed foaming layer 4, foaming layer 4 by outer top panel 1, inner top panel 2 and every Heat block 3 connects integral.

In conjunction with Fig. 8, foaming mould 13 in the utility model embodiment, including cope plate 13.1, lower template 13.2 and By axial the two of the circumferential both sides sealing of the circumferential two sides of outer top panel 1 and inner top panel 2, the axial sides of outer top panel 1 and inner top panel 2 The edge sealing 13.3 of side seal, wherein the separable setting of cope plate 13.1, lower template 13.2 when the two is assembled, forms one and vehicle The arc space that top shape matches, for being positioned when foaming to roof to roof.

The foaming method of the utility model embodiment, due to being to use segmented foaming technique, can effectively reduce list Secondary foaming bottling amount improves foaming quality.

Finally, the utility model embodiment additionally provides a kind of refrigerator car, which includes above-mentioned refrigerator car roof, on It states refrigerator car roof and forms seal an and top with two side walls, two headwalls and a bottom plate as the box knot of arc Structure, for storing transport refrigeration product.

Specifically, it using the roof after the heat-insulated process of foaming type, when being mounted on refrigerator car, needs outer top panel 1 outside plate for keeping the temperature side wall with refrigerator car and keeping the temperature headwall is welded and fixed, by inner top panel 2 and heat preservation side wall and the inner panel for keeping the temperature headwall Riveting is fixed, and heat preservation roof and heat preservation side wall and heat preservation headwall junction form closed cavity, and scene carries out poly- ammonia in cavity Ester foaming.

The refrigerator car of the utility model embodiment, since its roof is thermally shielded using foaming heat insulation technology, efficiency is mentioned The synthesis heat-proof quality of high vehicle has preferable economic results in society.

Following illustrated embodiment is the better embodiment of the utility model, only is used to facilitate to illustrate the utility model, and The non-limitation made under any form to the utility model has usually intellectual in any technical field, if not departing from In the range of the mentioned technical characteristic of the utility model, locally changes or repair using made by the utility model disclosed technology content The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic In the range of.

Claims (9)

1. a kind of refrigerator car roof, which is characterized in that the roof includes Wai Ding, interior top and foam insulation, in which:

The outer top includes outer top panel (1), and the outer top panel (1) is in the first arc；

The interior top includes inner top panel (2), and the inner top panel (2) is in the second arc, and second arc is located at first arc The radially inner side of shape constitutes filling space between the outer top panel (1) and the inner top panel (2)；

The foam insulation fills the filling space, and the foam insulation includes the heat insulation prefabricated by polyurethane (3) and by the foaming layer (4) of polyurethane on-the-spot foam, the heat insulation (3) is provided with multiple, multiple heat insulations (3) Multiple independent foaming spaces are divided into along the filling space, the foaming layer (4) fills the foaming space.

2. refrigerator car roof according to claim 1, which is characterized in that multiple heat insulations (3) are along the outer top panel (1) be provided at circumferentially spaced between the outer top panel (1) and inner top panel (2).

3. refrigerator car roof according to claim 1, which is characterized in that the interior top further includes the second side bar (6), described Second side bar (6) setting there are four, four second side bars (6) be separately positioned on the inner top panel (2) circumferential two sides and The axial sides of the inner top panel (2)；

The outer top panel (1) is provided with multiple connection components on the side towards the inner top panel (2), the connection component and Second side bar (6) is correspondingly arranged, and each connection component includes multiple connection iron (9) in column arrangement, and described the The connection of the connection iron (9) of two side bars (6) and the corresponding connection component.

4. refrigerator car roof according to claim 3, which is characterized in that the interior top further includes multiple interior camber beams (11), Multiple interior camber beams (11) are arranged at intervals on the inner top panel (2) towards on the side of the outer top panel (1), it is each it is described in The both ends of camber beam (11) are connected on two second side bars (6).

5. refrigerator car roof according to claim 4, which is characterized in that the interior top further includes interior beam (12), each The middle part of the interior camber beam (11) is connected by the interior beam (12)；

The outer top panel (1) is additionally provided with and the interior beam (12) position on the side towards the inner top panel (2) The connection iron (9) of corresponding connection component, the interior beam (12) and the corresponding connection component connects.

6. refrigerator car roof according to claim 4, which is characterized in that the interior camber beam (11) is Z-shape.

7. refrigerator car roof according to claim 1, which is characterized in that the outer top includes side bar (5), longitudinal beam (7) With outer camber beam (8), wherein；

There are two side bar (5) settings, and two side bars (5) are separately positioned on the circumferential two sides of the outer top panel (1)；

The outer camber beam (8) be provided with it is multiple, multiple outer camber beams (8) be arranged at intervals on the outer top panel (1) towards described in On the side of inner top panel (2), the both ends of each outer camber beam (8) are connected on two side bars (5), multiple described The middle part of outer camber beam (8) is connected by the longitudinal beam (7).

8. refrigerator car roof according to claim 7, which is characterized in that the outer top further includes fixed iron (10), each Multiple fixed iron (10) are arranged at intervals on the outer camber beam (8), the fixed iron (10) is with one along described outer The fixed pan that top plate (1) is arranged radially, the heat insulation (3) and the outer camber beam (8) are correspondingly arranged, the heat insulation (3) It is bonded the fixed pan setting of the fixation iron (10) on the corresponding outer camber beam (8).

9. a kind of refrigerator car, which is characterized in that the refrigerator car includes the described in any item refrigerator car roofs of claim 1-8.