CN111993983B - Refrigerated truck and its insulation wall panels - Google Patents
Refrigerated truck and its insulation wall panels Download PDFInfo
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- CN111993983B CN111993983B CN202010980961.9A CN202010980961A CN111993983B CN 111993983 B CN111993983 B CN 111993983B CN 202010980961 A CN202010980961 A CN 202010980961A CN 111993983 B CN111993983 B CN 111993983B
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- 238000009413 insulation Methods 0.000 title claims abstract description 41
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims description 43
- 238000005187 foaming Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 description 24
- 239000010410 layer Substances 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000004814 polyurethane Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 241000274582 Pycnanthus angolensis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/20—Refrigerated goods vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
- B62D33/048—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains for refrigerated goods vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Refrigerator Housings (AREA)
Abstract
The invention provides a refrigerator car and a heat-insulating wall plate thereof. The heat-insulating wall plate of the refrigerator car comprises an outer wall plate, an inner wall plate and a heat-insulating layer clamped between the outer wall plate and the inner wall plate, wherein the outer wall plate comprises a plurality of base plates which are flush and spliced in sequence, two side edges of each base plate are respectively bent to form two flanges, the flanges between two adjacent base plates are meshed together through plastic deformation to form convex ribs, and the convex ribs are distributed at intervals along the length direction of the outer wall plate and protrude to the inner side of the outer wall plate so as to be embedded in the heat-insulating layer. The outer wall plate is sequentially spliced through plastic deformation of the base plates, so that compared with the traditional splicing mode of bonding, welding and riveting, other additional connecting pieces are not needed, the labor intensity is reduced, and the manufacturing efficiency is improved. And the convex ribs are embedded in the heat insulation layer, so that the heat insulation layer can be reinforced, and layering of the inner wall plate, the outer wall plate and the heat insulation layer can be effectively prevented.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator car and a heat preservation wallboard thereof.
Background
Refrigerated vehicles are closed van-type transport vehicles for transporting frozen goods, which are important links in cold chain logistics.
The manufacture of the side plates and the top plate of the existing refrigerated truck mainly comprises the following steps that firstly, the outer wall is made of a whole glass fiber reinforced plastic (FiberReinforcedPlastics, FRP for short) and the inner wall is made of a fiber reinforced thermoplastic composite plate (the main component is thermoplastic polymer). The side plate or the top plate manufactured by the method is not very high in strength, and can only be used for a refrigerator car with general strength, so that the foaming density of polyurethane of the heat insulation layer is required to be improved for a refrigerator car with high strength, or reinforcing ribs are arranged in the polyurethane heat insulation layer, and the material cost and the car body weight are obviously increased in the two modes. The production of FRP materials has serious environmental pollution, and the FRP is a thermosetting material which is unfavorable for recycling and is not advocated more and more.
Second, to achieve the required strength, the side panels and roof panels of a refrigerated truck are wider than conventional metal coils, and are typically fabricated by splicing metal sheets (aluminum or steel). The mode of concatenation mainly includes, and one kind adopts freezer heated board concatenation to form curb plate or roof, and the freezer board is from taking the interface, scribbles structural adhesive in the interface department when the concatenation, then dock between the panel, exerts certain pressure and waits for glue solidification, owing to need structural adhesive, so all have strict requirements to construction environment, surface treatment of material, pressurize pressure, otherwise lead to the sticky effect not good easily, splice seam fracture in the use, and then appear leaking, quality problems such as infiltration, seriously lead to vehicle transportation safety. The other mode is to arrange small metal plates in the length direction, splice the small metal plates by welding or riveting and the like, and then foam the small metal plates to obtain the side plates or the top plates of the refrigerated vehicle. However, the welded seam of the welded metal plate is easy to crack, and is large in deformation, so that quality and appearance are affected. Meanwhile, the rivets are required to be densely arranged through riveting and splicing, so that the appearance is uneven, and the weight of the plate is increased.
Refrigerated vehicles have high requirements on the appearance, the sealing performance and the strength of the box boards, and as vehicles for transporting goods, the design of light weight is increasingly promoted. The above-mentioned panels made of FRP sheet material and spliced by metal plates adhered or welded are difficult to meet the requirements.
Disclosure of Invention
The invention aims to provide a thermal insulation wallboard of a refrigerator car, which realizes snap connection through plastic deformation of a substrate, so as to ensure the strength, rigidity and sealing performance of the connection.
The invention further provides a refrigerator car.
In order to solve the technical problems, the invention adopts the following technical scheme:
the heat-insulating wall plate of the refrigerator car comprises an outer wall plate, an inner wall plate and a heat-insulating layer clamped between the outer wall plate and the inner wall plate, wherein the outer wall plate comprises a plurality of base plates which are flush and spliced in sequence, two side edges of each base plate are respectively bent to form two flanges, the flanges between two adjacent base plates are meshed together through plastic deformation to form convex ribs, and the convex ribs are distributed at intervals along the length direction of the outer wall plate and protrude towards the inner side of the outer wall plate so as to be embedded in the heat-insulating layer.
According to one embodiment of the invention, the inner wall plate also comprises a plurality of base plates which are spliced side by side in sequence, two side edges of each base plate are respectively bent to form two flanges, the flanges between the two adjacent base plates are meshed through plastic deformation to form convex ribs, the convex ribs on the inner wall plate protrude towards the outer wall plate and are staggered with the convex ribs on the outer wall plate, a foaming cavity is defined between any two adjacent convex ribs on the inner wall plate and two opposite convex ribs on the outer wall plate, openings are formed at two ends of the foaming cavity, and the foaming cavities are sequentially communicated through the openings for injecting foaming materials and form the heat insulation layer.
According to one embodiment of the invention, the two flanges of the base plate are respectively a first flange and a second flange, the first flange is a turned-over edge which is vertically extended from the base plate, the second flange comprises a blocking edge which is vertically extended from the base plate and another blocking edge which is connected with the blocking edge in an included angle, and the turned-over edge of one base plate is extended between the two blocking edges of the other base plate and is respectively blocked with the two blocking edges to form the convex rib.
According to one embodiment of the invention, the flanging and the engagement edges are stamped to form an engagement section with an arc-shaped outline, the tail end of the engagement section extends to a direction away from the substrate to form a straight joint section, the engagement sections of the flanging and the engagement sections of the two engagement edges are correspondingly engaged and connected, and the joint sections of the flanging are respectively adhered to the joint sections of the two engagement edges.
According to one embodiment of the invention, the end part of the joint section of the two engagement edges is arc-shaped, and a gap is formed between the end part and the end part of the joint section of the flanging so as to form a filling hole which is closed in a ring shape.
According to one embodiment of the invention, the projected length of the engagement section on a projection plane perpendicular to the substrate is not smaller than the projected length of the engagement section.
According to one embodiment of the invention, the cross-sectional shape of the bite section is wavy, V-shaped and circular arc-shaped.
According to one embodiment of the invention, the outer wall plate further comprises a sealing strip which is arranged corresponding to the base plate, and the sealing strip extends along the flange of the base plate and is attached between the flanging and the attaching section of the engagement edge.
According to one embodiment of the invention, the plurality of base plates comprise a plurality of first base plates and a plurality of second base plates which are sequentially and alternately spliced, wherein two flanges of the first base plates are first flanges which vertically extend from the first base plates, two flanges of the second base plates are second flanges which vertically extend from the second base plates and comprise a meshing edge and another meshing edge which is connected with the meshing edge in an included angle, and the first flanges extend between the two meshing edges and are respectively meshed with the two meshing edges to form the convex rib.
The embodiment provides a refrigerated vehicle, which comprises a compartment body and a heat-insulating wall plate arranged on the compartment body, wherein an inner wall plate of the heat-insulating wall plate is clung to and covers the top and the side wall of the compartment body, and an outer wall plate wraps the inner wall plate from the outer side.
According to the technical scheme, the heat-insulating wall plate of the refrigerator car provided by the invention has at least the following advantages and positive effects:
1. The outer wall plate is provided with a plurality of protruding ribs along the length direction at intervals, the protruding ribs are embedded in the heat insulation layer, the heat insulation layer is reinforced, the connection reliability and the tightness are guaranteed, layering of the inner wall plate, the outer wall plate and the heat insulation layer, which are formed by impact, can be effectively prevented, and the overall heat insulation performance of the refrigerated vehicle is improved.
2. The outer wall plate is sequentially spliced through plastic deformation of the base plates, so that compared with the traditional splicing mode of bonding, welding and riveting, other additional connecting pieces are not needed, the labor intensity of workers is reduced, the manufacturing efficiency is improved, and the weight of the wall plate is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a thermal insulation wall plate according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of a rib in a heat insulation layer according to a first embodiment of the present invention.
Fig. 3 is a schematic structural view of an outer wall panel according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a substrate according to a first embodiment of the present invention.
Fig. 5 is a schematic buckling view of a first flange and a second flange of a substrate according to a first embodiment of the present invention.
Fig. 6 is a fastening structure formed after the first flange and the second flange in fig. 5 are fastened together.
Fig. 7 is a schematic view showing an arrangement of a fastening structure and a forming mold according to a first embodiment of the present invention.
Fig. 8 is a schematic view showing the shape of the occlusion section in the first embodiment of the present invention.
Fig. 9 is a schematic view of the bite section in a V-shape according to the first embodiment of the present invention.
Fig. 10 is a schematic diagram illustrating connection between a first substrate and a second substrate according to a second embodiment of the present invention.
The reference numerals are as follows, 100-thermal insulation wall plate, 1-outer wall plate, 10-base plate, 11-flange, 11 a-first flange, 111-flange, 12 a-second flange, 121-snap-in edge, 13-bead, 14-sealing strip, 15-snap-in structure, 161-snap-in section, 162-laminating section, 18-filling hole, 3-inner wall plate, 5-thermal insulation layer, 6-foaming cavity, 61-opening, 71-first base plate, 72-second base plate, 11 b-first flange, 12 b-second flange, 200-forming die.
Detailed Description
Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It will be understood that the invention is capable of various modifications in various embodiments, all without departing from the scope of the invention, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the invention.
The embodiment provides a refrigerator car and heat preservation wallboard thereof, and the refrigerator car includes the railway carriage or compartment body and locates the heat preservation wallboard on the railway carriage or compartment body. The carriage body is of a hollow frame structure, the opening at the tail part of the carriage body is correspondingly provided with a closable carriage door, and the top and the side wall of the carriage body are covered by heat preservation wall plates. The heat preservation wallboard comprises an inner wallboard clung to the carriage body, an outer wallboard wrapping the inner wallboard from the outer side and a heat preservation layer clamped between the outer wallboard and the inner wallboard for preserving heat of refrigerated goods. The outer wall plate is formed by plastic deformation, engagement and splicing of the plurality of base plates, the convex ribs formed by engagement have good connection strength, and the convex ribs protrude inwards to be embedded in the heat insulation layer, so that the heat insulation layer is reinforced, layering of the heat insulation layer and the inner wall plate and the outer wall plate is prevented, and heat insulation performance of the heat insulation wall plate is guaranteed.
The thermal insulation wall plate of the refrigerator car provided by the embodiment will be specifically described through several specific embodiments. The refrigerator car provided by the invention can be formed by installing the heat-insulating wall plate on the carriage body of each embodiment.
First embodiment of a thermal wall plate for a refrigerator car
Referring to fig. 1, fig. 1 shows a specific structure of a thermal insulation wall board 100 of a refrigerator car according to the present embodiment. The thermal insulation wall plate 100 comprises an outer wall plate 1 and an inner wall plate 3 which are arranged at opposite intervals, and a thermal insulation layer 5 which is clamped between the outer wall plate 1 and the inner wall plate 3.
The outer wall panel 1 includes a plurality of substrates 10 made of a metal material and having a uniform specification.
Referring to fig. 2, two side edges of each metal substrate 10 are respectively bent to form two flanges 11. The substrates 10 are sequentially flush-spliced, and flanges 11 between two adjacent substrates 10 are engaged together by plastic deformation, and a bead 13 is formed. The ribs 13 are distributed at intervals along the length direction of the spliced outer wall plate 1 (carriage body) and protrude towards the inner side of the outer wall plate 1 so as to be embedded in the heat insulation layer 5. Thus, the outer wall plate 1 can be connected through deformation of the metal plate, and the structural skill ensures flatness of the wall plate and strength, rigidity and sealing performance of the wall plate.
Further, the inner wall plate 3 has the same structure as the outer wall plate 1, and also includes a plurality of metal substrates 10 sequentially spliced side by side to enhance the structural strength. At the same time, the inner side of the inner wall panel 3 facing the compartment is to be coated with a food grade coating.
Two flanges 11 are respectively formed by bending both side edges of each base plate 10 of the inner wall plate 3, and the flanges 11 between the adjacent two base plates 10 are engaged by plastic deformation to form ribs 13.
The inner wall plate 3 is covered above the outer wall plate 1 at intervals based on the view direction of fig. 2, and a plurality of ribs 13 on the inner wall plate 3 protrude toward the outer wall plate 1 and are respectively arranged in a staggered manner with respect to the ribs 13 on the outer wall plate 1. The purpose is that the ribs 13 on the inner side and the outer side are staggered with each other, a certain gap is formed between the ribs, the heat conductivity coefficient is reduced, and the heat transfer is reduced.
Adjacent ribs 13 on the inner wall panel 3 and adjacent ribs on the opposite outer wall panel 1 define a small foam chamber 6 in the interlayer between the inner and outer wall panels. The foaming chamber 6 has openings 61 at both ends in the longitudinal direction of the outer wall plate 1.
The foaming chambers 6 are communicated and connected in sequence through the openings 61 for injecting foaming materials, and finally the heat insulation layer 5 is formed. The foaming material is usually polyurethane foam plastic, and the foaming cavities 6 are filled by injecting from the side opening of each foaming cavity 6 in the thickness direction, so that the uniformity of the polyurethane foaming material of the whole board in the polyurethane foaming process can be ensured, the density of the polyurethane heat insulation layer 5 is consistent, and the quality of the heat insulation wallboard 100 is improved.
And after the polyurethane foam forms the heat preservation 5, protruding bead 13 inlay in heat preservation 5 for wallboard and heat preservation 5 are inseparable to be in the same place, consolidate heat preservation 5, can prevent effectively that the layering of wallboard and heat preservation 5, have improved intensity and the rigidity of connection.
In this embodiment, the inner wall plate 3 is formed by splicing a plurality of metal base plates 10 to ensure the strength of the whole plate. In other embodiments, where the ribs 13 of the outer wall panel 1 can act as reinforcing ribs to reinforce the insulation 5, the inner wall panel 3 can be a whole panel structure made of PE, so that the insulation wall panel 100 has both the advantages of high strength and light weight.
The outer wall plate 1 and the inner wall plate 3 are respectively punched by special punching equipment to generate plastic deformation, and the flanges 11 on the two sides of the base plate 10 can be mutually meshed. The connection mode of this interlock is inseparable not only, and compares in traditional bonding, welding, riveted concatenation mode, need not binder, fastener, need not to consider the split of welding seam, and is convenient fast, alleviates work load, promotes efficiency.
Next, referring to fig. 3 and 4 together, taking the outer wall plate 1 as an example, the outer wall plate 1 includes a plurality of base plates 10 and a plurality of sealing strips 14 arranged corresponding to the respective base plates 10.
The two opposite flanges 11 on each substrate 10 are a first flange 11a and a second flange 12a, respectively.
As shown in fig. 4, the first flange 11a is a flange 111 bent and erected from one side edge of the base plate 10, and the flange 111 has a straight plate shape, and the connection with the base plate 10 may be an approximately L-shaped fastening portion for engaging with the second flange 12 a.
The second flange 12a includes a snap-in side 121 bent and protruded from the other side edge of the base plate 10 and another snap-in side 121 connected to the snap-in side 121 at an angle. The included angle is acute such that the two snap edges 121 form a generally V-shaped fastening portion.
The sealing strip 14 is made of an elastic material, is correspondingly arranged on the first flange 11a, and is attached to the upper end of the side surface of the first flange 11a facing the second flange 12 a. The sealing strip 14 is provided to extend along the first flange 11a so as not to extend beyond both sides in the lateral direction of the base plate 10.
Referring to fig. 5 to 6, a plurality of substrates 10 are arranged side by side for splicing before being deformed by pressing, and the outer side surfaces of the substrates 10 are flush. In the process of fastening the first flange 11a and the second flange 12a of the two adjacent substrates 10, the flange 111 first extends into the gap between the two engaging edges 121, then the flange 111 is correspondingly attached to the two engaging edges 121, and simultaneously, the sealing strip 14 is attached between the flange 111 and one engaging edge 121. The flange 111 and the two engaging edges 121 together form a buckling structure 15 erected on the inner side of the substrate 10, so as to realize buckling connection between the substrates 10 and ensure the stability of preliminary splicing of the substrates 10.
After buckling, due to elastic deformation of the sealing strips 14, tiny gaps on the contact surface between the two metal substrates 10 at the buckling position are well filled, external moisture is prevented from being unable to penetrate into the heat preservation layer 5 in the middle of the heat preservation wall plate 100, materials of the heat preservation layer 5 are effectively protected, and the service life is effectively prolonged.
The above-mentioned fastening structure 15 is deformed by punching with a dedicated forming device to form a tight engagement structure, i.e., the ribs 13, to further increase the reliability of the structure and prevent loosening between the substrates 10.
Referring to fig. 7 and 8, two molding dies 200 are disposed at two sides of the fastening structure 15. Wherein the edge of the forming mold 200 is provided with an arc-shaped protrusion, and both sides of the fastening structure 15 are simultaneously punched in a direction perpendicular to the fastening structure 15.
Wherein, the flange 111 of the first flange 11a is stamped to form a snapping section 161 with an arc-shaped contour close to the base plate 10, and the tail end of the snapping section 161 further extends to a direction away from the base plate 10 to form a straight attaching section 162.
The projection length of the engaging section 161 on the projection plane perpendicular to the substrate 10 is not smaller than the projection length of the attaching section 162, so that the rib 13 is ensured to have a sufficient engaging length.
The engaging edges 121 of the second flange 12a are integrally formed into the engaging section 161 and the fitting section 162 by the same press forming.
In this way, the flange 111 and the engaging sections 161 of the two engaging sides 121 are correspondingly and tightly engaged together by the adapted arc-shaped contours, the flange 111 and the engaging sections 162 of the two engaging sides 121 are relatively engaged, and the sealing strip 14 is adhered between the engaging sections 162 of the flange 111 and the engaging sections 162 of the one engaging side 121.
The end of the engaging section 162 of the engaging edge 121, which is connected to the end of the engaging section 162 of the flange 111, is circular arc-shaped, and a gap is formed between the end and the end of the engaging section 162 to form a filling hole 18 which is closed in a ring shape.
After the polyurethane foams to form the heat preservation 5, the protruding ribs 13 are inlaid in the heat preservation 5, and the polyurethane fills the filling holes 18 at the snap-in positions of the ribs 13, so that the wallboard and the heat preservation 5 are tightly connected together, layering of the wallboard and the polyurethane heat preservation 5 caused by impact in the transportation process can be effectively prevented, and the strength and the rigidity of the heat preservation wallboard 100 are improved.
The engaging section 161 is integrally erected on the base plate 10 in this embodiment, and is particularly wavy. And the conforming section 162 remains upright.
In other embodiments, referring to fig. 9, the bite section 161 may also be approximately V-shaped. The fitting section 162 connected to the V-shaped engagement section 161 is inclined. Of course, the engaging section 161 may have a semicircular arc shape, an S-shape, or other shapes.
The plurality of base plates 10 are meshed through plastic deformation to form a plurality of ribs 13 so as to splice and form the outer wall plate 1 or the inner wall plate 3, which is different from the traditional welding and bonding modes, so that the workload is greatly reduced, and the meshed section 161 is of a wavy arc-shaped design and can be regarded as a flexible connection structure.
When the temperature difference between the inside and outside of the carriage body is large, the inner wall plate 3 is subjected to cold shrinkage, the outer wall plate 1 is heated and stretched, as the convex ribs 13 are arranged on the inner wall plate and the outer wall plate at intervals in the length direction, the V-shaped or L-shaped bending slight deformation similar to the joint of the convex ribs 13 can be caused by the dimensional change caused by the shrinkage and stretching of the wall plate, so that the influence of the shrinkage and stretching of the wall plate caused by the temperature difference between the inside and outside can be buffered, the deformation of the plate is greatly restrained, and the service life is prolonged.
In this embodiment, both molding dies 200 are rollers, and the molding method thereof can be selected in various ways. For example, one of the molding dies 200 is fixed at one side of the rib 13, and the other opposite molding die 200 is moved and rolled laterally along the edge of the rib 13 to gradually squeeze the metal for engagement. Or the two forming dies 200 simultaneously move and roll along the edges of the ribs 13 to gradually squeeze the metal for engagement. And, the two forming dies 200 are moved relatively to press the metal step by step for engagement.
Second embodiment of thermal insulation wall plate of refrigerator car
Referring to fig. 10, the thermal insulation wall board provided in this embodiment is different from the thermal insulation wall board of the first embodiment in that the outer wall board 1 is no longer formed by splicing a plurality of substrates 10 with the same structure, but includes a plurality of first substrates 71 and second substrates 72 with different structures that are spliced alternately in turn.
Specifically, the first substrate 71 and the second substrate 72 are each made of a metal material.
Wherein, the two opposite sides of the first substrate 71 are respectively bent to form two opposite first flanges 11b. The first flange 11b is a flange 111 extending from the first base 71, and the flange 111 is in a straight plate shape, and the connection with the base 10 may be an approximately L-shaped fastening portion for engaging with the second flange 12 b.
Two opposite side edges of the second substrate 72 are respectively bent to form two opposite second flanges 12b. The second flange 12b includes a snap-in side 121 bent and protruded from the other side edge of the base plate 10 and another snap-in side 121 connected to the snap-in side 121 at an angle. The included angle is acute such that the two snap edges 121 form a generally V-shaped fastening portion.
The two sealing strips 14 are respectively and correspondingly attached to the inner side surfaces of the two first flanges 11 b.
In the fastening process, the plurality of first substrates 71 and the plurality of second substrates 72 are alternately arranged side by side to be spliced, and at this time, the outer side surfaces of the first substrates 71 and the second substrates 72 are kept flush. The flange 111 is first stretched into the gap between the two engaging edges 121, then the flange 111 is correspondingly attached to the two engaging edges 121, and simultaneously, the sealing strip 14 is attached between the flange 111 and one engaging edge 121. The flange 111 and the two engagement edges 121 together form a snap-fit structure upstanding on the inner side of the base plate 10, enabling a snap-fit connection between the first base plate 71 and the second base plate 72.
In the process of engagement, the above-mentioned fastening structure is deformed by punching through a dedicated forming die 200 to form a tight engagement structure, i.e., the bead 13. The convex ribs 13 are embedded in the heat preservation layer 5, play a role in reinforcing the heat preservation layer 5, ensure the reliability and the tightness of connection, effectively prevent layering phenomenon of the inner wall plate, the outer wall plate and the heat preservation layer 5 when being impacted, and improve the overall heat preservation performance of the refrigerated vehicle.
While the invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980961.9A CN111993983B (en) | 2020-09-17 | 2020-09-17 | Refrigerated truck and its insulation wall panels |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980961.9A CN111993983B (en) | 2020-09-17 | 2020-09-17 | Refrigerated truck and its insulation wall panels |
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| Publication Number | Publication Date |
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| CN111993983A CN111993983A (en) | 2020-11-27 |
| CN111993983B true CN111993983B (en) | 2025-02-21 |
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| CN202010980961.9A Active CN111993983B (en) | 2020-09-17 | 2020-09-17 | Refrigerated truck and its insulation wall panels |
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| CN113715918B (en) * | 2021-09-29 | 2025-01-21 | 扬州中集通华专用车有限公司 | A van compartment panel splicing structure and van |
Citations (4)
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| EP0512135A1 (en) * | 1985-03-26 | 1992-11-11 | Josef Krismer | Reinforcement or supporting plate |
| DE19822884A1 (en) * | 1998-05-22 | 1999-11-25 | Peter Kiesling | Wall element for a vehicle body and method for producing such a wall element |
| WO2015082625A1 (en) * | 2013-12-04 | 2015-06-11 | Schmitz Cargobull Ag | Side wall or roof of a box body of a utility vehicle |
| CN212401035U (en) * | 2020-09-17 | 2021-01-26 | 中集车辆(集团)股份有限公司 | Refrigerator car and heat preservation wallboard thereof |
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| DE3837890A1 (en) * | 1988-11-08 | 1990-05-10 | Emil Doll Gmbh U Co Kg Fahrzeu | Sandwich element |
| DE10317217A1 (en) * | 2003-04-15 | 2004-11-04 | Bayer Ag | Hollow chamber composite component |
| CN2823174Y (en) * | 2005-09-30 | 2006-10-04 | 中国国际海运集装箱(集团)股份有限公司 | Ribbed wall plate jointing structure for refrigerating container or refrigerating carriage |
| CN105984512B (en) * | 2015-02-04 | 2018-09-25 | 中集车辆（集团）有限公司 | Van wall body structure, wall, van type carriage body and van |
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| EP0512135A1 (en) * | 1985-03-26 | 1992-11-11 | Josef Krismer | Reinforcement or supporting plate |
| DE19822884A1 (en) * | 1998-05-22 | 1999-11-25 | Peter Kiesling | Wall element for a vehicle body and method for producing such a wall element |
| WO2015082625A1 (en) * | 2013-12-04 | 2015-06-11 | Schmitz Cargobull Ag | Side wall or roof of a box body of a utility vehicle |
| CN212401035U (en) * | 2020-09-17 | 2021-01-26 | 中集车辆(集团)股份有限公司 | Refrigerator car and heat preservation wallboard thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111993983A (en) | 2020-11-27 |
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