Brand-new structure of refrigeration compartment body made of XPS core material and manufacturing process of brand-new structure

Abstract

The invention belongs to the field of refrigeration compartment bodies, and particularly relates to a brand-new structure of a refrigeration compartment body made of XPS core materials and a manufacturing process of the brand-new structure. The brand-new structure of the refrigeration compartment body made of the XPS core materials comprises a bottom plate, side plates, a top plate, a front plate and a rear door plate, the side plates are arranged on the two sides of the top of the bottom plate, and the top plate is arranged at the tops of the side plates; the front ends of the bottom plate, the side plates and the top plate are provided with front plates, and the rear ends of the bottom plate, the side plates and the top plate are provided with rear door plates. C-shaped steel and U-shaped rolling frameworks are arranged at the corners of the bottom plate, the left side plate, the right side plate, the front plates, the rear door plates and the top plate of the compartment body to form a longitudinal and transverse suspension type integrally-woven metal framework embedded structure; by means of the structural mode, the structural strength of the plates is greatly enhanced, and the connection strength of riveting of the plates is greatly enhanced when the compartment body is assembled and spliced. Compared with a traditional XPS refrigeration compartment plate adopting a full-batten frame structure and a metal rectangular pipe pre-embedding welding process, the structural strength is higher, and the self weight is reduced by 15% or above.

Description

Technical Field

[0001] The invention belongs to the field of refrigerated compartments, in particular to a new structure of a refrigerated compartment of XPS core material and a manufacturing process thereof. Background Art

[0002] At present, the mainstream domestic XPS core refrigeration compartment structure and its manufacturing process almost all adopt the structure of full wooden square frame filled with XPS foam core material or the structural process of slotting and filling square and rectangular tube frame welding on XPS foam board, and then adopt the "sandwich" bonding composite process to make panels. The compartment assembly adopts the compartment assembly process of structural adhesive bonding and wood screw connection and the compartment assembly process of pre-embedded square and rectangular tube frame welding.

[0003] Disadvantages of traditional XPS core refrigerated compartments: First, the traditional XPS refrigerated box production process uses a full-wood square frame structure and pre-embeds iron plates on the edge of the board and uses screws to connect the box when assembling it, or uses a structural process of slotting and filling square tube frames on XPS foam boards and welding. Not only is the box structure strength and thermal insulation performance poor, and the box is heavy, but the full-wood square frame structure or thin-walled square tube frame structure has poor corrosion resistance, which greatly affects the service life of the box; Secondly, the production process of traditional XPS refrigerated compartment panels and compartment assembly is too complicated. The use of more wood and embedded steel plates is heavy and will produce too many cold bridges, which will have a great impact on the insulation performance of the entire compartment, making the air tightness and insulation performance of the entire compartment relatively poor. The insulation time (the time it takes to heat up from the ambient temperature of 30°C to the temperature of 0°C at -20°C) is generally only about 75 to 85 minutes. Finally, the weight of the car body using this plate structure technology and car body assembly technology is relatively heavy, generally around 900kg to 1000kg.

[0004] In view of this, the present invention introduces a new structure of a refrigerated compartment of XPS core material and a manufacturing process thereof. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a new structure of a refrigerated compartment with an XPS core material and a manufacturing process thereof described in the present invention, the new structure of the refrigerated compartment with an XPS core material includes a bottom plate, a side plate, a top plate, a front plate and a rear door plate, side plates are arranged on both sides of the top of the bottom plate, a top plate is arranged on the top of the side plate, a front plate is arranged at the front ends of the bottom plate, the side plate and the top plate, and a rear door plate is arranged at the rear ends of the bottom plate, the side plate and the top plate.

[0007] Preferably, the side panels, top panels and front panels are composed of two skin panels, C-shaped rolled metal strips, an XPS core panel and a U-shaped rolled frame. The two skin panels are arranged on the inner and outer sides of the panels, an XPS core panel is embedded in the panel, a perfusion cavity is arranged between adjacent XPS core panels, a U-shaped rolled frame is arranged in the perfusion cavity, and C-shaped rolled metal strips are inlaid on the upper and lower surfaces of the XPS core panel. The C-shaped rolled metal strips inlaid on the upper and lower surfaces are welded to the U-shaped rolled frame to form a pre-embedded structure of a suspended integral woven metal frame.

[0008] Preferably, the base frame is composed of a steel-plastic composite reinforced I-beam, plywood, a skin board and an H-shaped composite frame profile. The top of the base frame is provided with plywood and a skin board. The left and right sides and the front end of the base frame are provided with H-shaped composite frame profiles. A steel-plastic composite reinforced I-beam is arranged horizontally in the middle of the H-shaped composite frame profiles on the left and right sides. The steel-plastic composite reinforced I-beam and the H-shaped composite frame profile are connected by bolts to form an overall frame structure.

[0009] Preferably, the lower side of the U-shaped rolled frame of the left and right side plates is connected to the corresponding position of the side cross beam of the base plate by punching, tapping and bolting, and the lower side of the U-shaped rolled frame of the front plate is connected to the corresponding position of the H-shaped composite frame profile at the front end of the base plate by punching, tapping and bolting.

[0010] Preferably, the side panels, top panel, front panel and rear door panel are assembled by riveting aluminum alloy profiles with sealant grooves inside and outside the panels, and the combined positions of the panels form a sealed cavity structure.

[0011] A manufacturing process of a refrigerated compartment of an XPS core material comprises the following steps: S1. A second skin sheet is provided inside and outside the left and right side panels, the top panel and the front panel of the compartment. A U-shaped roll-formed skeleton and a C-shaped roll-formed metal strip are provided between adjacent XPS core sheets. The C-shaped roll-formed metal strip is embedded in the upper and lower surfaces of the XPS core sheet after slotting and milling, and is welded and connected with the U-shaped roll-formed skeleton to form a perfusion cavity of the suspended metal frame. Polyurethane foam material is perfused into the perfusion cavity to fill it. After filling, an integral XPS core sheet of the compartment sheet is formed. The second skin sheet and the integral XPS core sheet are compounded by heating, pressurizing and bonding after glue spraying to form an integral sheet; S2. The frame of the box floor is made of polymer pultruded profiles to make a combination of frame and beams, and the frame of the floor is filled with XPS sheets, which are then bonded with the inner and outer skin sheets through glue spraying, heating and pressurization to form the box floor; S3. The left and right side panels of the car body, the lower side of the front panel and the bottom plate cross beam are punched and tapped at the corresponding positions and then bolted. The left and right side panels of the car body, the lower side of the front panel and the inner side of the bottom plate are riveted and connected with aluminum alloy profiles with sealant. The left and right side panels of the car body, the lower side of the front panel and the bottom plate are combined to form an internal and external sealed cavity structure; S4. The left and right side panels, top panel, front panel and rear door panel of the vehicle body are assembled by riveting the aluminum alloy profiles with sealant grooves inside and outside the panels, and forming a sealed cavity structure at the assembly position of each panel; S5. Perform foaming filling and bonding in the cavity structure at each panel assembly position.

[0012] The beneficial effects of the present invention are as follows: 1. The new structure and manufacturing process of the refrigerated compartment of XPS core material described in the present invention is to form a vertical and horizontal "suspended integral woven metal" skeleton pre-embedded structure by arranging C-shaped steel and U-shaped roll-pressed skeleton at the corners of the compartment bottom plate, left and right side plates, front plate, rear door plate, and top plate. This structural method not only greatly enhances the structural strength of the plate itself, but also greatly enhances the riveting connection strength between the plates when the compartment is assembled. Compared with the traditional XPS refrigerated compartment plate using a full wooden square frame structure and metal rectangular tube pre-embedded welding process, the structural strength is higher and the dead weight is more than 15% lighter.

[0013] 2. The new structure and manufacturing process of the refrigerated compartment of XPS core material described in the present invention, through the sealed cavity structure formed by the corner combination position of the compartment bottom plate, left and right side plates, front plate, rear door plate, and top plate, not only enhances the structural strength of the entire compartment, but also realizes the closed loop of the insulation core material between each plate, so that the air tightness of the compartment is greatly improved and the thermal conductivity is greatly reduced. Compared with the traditional XPS refrigerated compartment, the air tightness of the entire compartment is improved by 200%, and the insulation performance is improved by more than 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a structural diagram of the compartment in the present invention; Figure 2 It is a front view structural cross-sectional view of the box body in the present invention; Figure 3 The present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 The present invention Figure 2 The structure diagram at B is enlarged; Figure 5 It is a cross-sectional view of the side plate, top plate and front plate structure of the present invention; Figure 6is a cross-sectional view of the bottom plate structure in the present invention; Figure 7 It is a box frame structure diagram in the present invention.

[0016] In the figure: 1. bottom plate; 101. steel-plastic composite reinforced I-shaped crossbeam; 102. plywood; 103. skin sheet material one; 104. H-shaped composite frame profile; 2. side plate; 201. skin sheet material two; 202. C-shaped roll-formed metal strip; 203. XPS core sheet material; 204. U-shaped roll-formed skeleton; 205. injection cavity; 3. top plate; 4. front plate; 5. rear door plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] like Figures 1 to 7 As shown, a new structure of a refrigerated compartment with an XPS core material and a manufacturing process thereof in an embodiment of the present invention, the new structure of the refrigerated compartment with an XPS core material includes a bottom plate 1, side plates 2, a top plate 3, a front plate 4 and a rear door plate 5, side plates 2 are arranged on both sides of the top of the bottom plate 1, the top plate 3 is arranged on the top of the side plate 2, the front plate 4 is arranged at the front ends of the bottom plate 1, the side plates 2 and the top plate 3, and the rear ends of the bottom plate 1, the side plates 2 and the top plate 3 are arranged at the rear ends of the rear door plate 5.

[0019] like Figure 5 As shown, the side panels 2, top panel 3 and front panel 4 are composed of a skin sheet 201, a C-shaped rolled metal strip 202, an XPS core sheet 203 and a U-shaped rolled skeleton 204. The skin sheet 201 is provided on the inner and outer sides of the sheet, an XPS core sheet 203 is embedded in the sheet, a perfusion cavity 205 is provided between adjacent XPS core sheets 203, a U-shaped rolled skeleton 204 is provided in the perfusion cavity 205, and the upper and lower surfaces of the XPS core sheet 203 are inlaid with C-shaped rolled metal strips 202. The C-shaped rolled metal strips 202 inlaid on the upper and lower surfaces are welded to the U-shaped rolled skeleton 204 to form a suspended integral woven metal frame embedded structure.

[0020] like Figure 6As shown, the bottom plate 1 frame is composed of a steel-plastic composite reinforced I-shaped cross beam 101, a plywood 102, a skin plate 103 and an H-shaped composite frame profile 104. The top of the bottom plate 1 frame is provided with a plywood 102 and a skin plate 103. The left and right sides and the front end of the bottom plate 1 frame are provided with an H-shaped composite frame profile 104. The steel-plastic composite reinforced I-shaped cross beam 101 is arranged horizontally between the H-shaped composite frame profiles 104 on the left and right sides. The steel-plastic composite reinforced I-shaped cross beam 101 and the H-shaped composite frame profile 104 are provided with a steel-plastic composite reinforced I-shaped cross beam 101. 4 The overall frame structure is formed by bolt connection, and then the XPS core material is filled, which not only realizes the higher lightweight, high strength and corrosion resistance of the box bottom plate 1, but also greatly improves the air tightness and thermal insulation performance of the box. The thermal insulation performance of the whole box can reach 110 minutes, and the time for the temperature inside the box to rise from 20° to 0° at an ambient temperature of 30°; and the simpler box structure can reduce the weight of the box, indirectly reduce the loss of fuel or electricity of the refrigerated truck, reduce the transportation cost of customers, and also reduce the production cost.

[0021] The lower side of the U-shaped rolled frame 204 of the left and right side panels 2 is connected to the corresponding position of the side beam of the bottom plate 1 by punching, tapping and bolting, and the lower side of the U-shaped rolled frame 204 of the front panel 4 is connected to the corresponding position of the H-shaped composite frame profile 104 at the front end of the bottom plate 1 by punching, tapping and bolting.

[0022] The side panels 2, top panel 3, front panel 4 and rear door panel 5 are assembled by riveting aluminum alloy profiles with sealant grooves inside and outside the panels, and the combined positions of the panels form a sealed cavity structure.

[0023] A manufacturing process of a refrigerated compartment of an XPS core material comprises the following steps: S1. A second skin sheet 201 is arranged inside and outside the left and right side panels 2, the top panel 3 and the front panel 4 of the compartment. A U-shaped roll-formed skeleton 204 and a C-shaped roll-formed metal strip 202 are arranged between adjacent XPS core sheets 203. The C-shaped roll-formed metal strip 202 is embedded in the upper and lower surfaces of the XPS core sheet 203 after slotting and milling, and is welded and connected with the U-shaped roll-formed skeleton 204 to form a perfusion cavity 205 of a suspended metal frame. A polyurethane foam material is perfused into the perfusion cavity 205 for filling. After filling, an integral XPS core sheet 203 of the compartment sheet is formed. The second skin sheet 201 and the integral XPS core sheet 203 are compounded by heating, pressurizing and bonding after glue spraying to form an integral sheet; S2, the frame of the box bottom plate 1 is made of a combination structure of a frame and a crossbeam made of a polymer pultruded profile, and the frame of the bottom plate 1 is filled with an XPS sheet, which is then bonded with the inner and outer skin sheets 103 by heating, pressurizing and bonding after gluing to form the box bottom plate; S3. The left and right side panels 2 and the lower side of the front panel 4 are connected with the corresponding positions of the cross beam of the bottom panel 1 by punching and tapping, and the left and right side panels 2 and the lower side of the front panel 4 are connected with the inner side of the bottom panel 1 by riveting with aluminum alloy profiles with sealant, and a cavity structure with internal and external sealing is formed at the combined position of the left and right side panels 2 and the lower side of the front panel 4 and the bottom panel 1; S4, the left and right side panels 2, the top panel 3, the front panel 4 and the rear door panel 5 of the compartment body are assembled by riveting the aluminum alloy profiles with sealing adhesive grooves inside and outside the panels, and forming a sealed cavity structure at the assembly position of each panel; S5. Perform foaming filling and bonding in the cavity structure at each panel assembly position.

[0024] It should be noted here that First, C-shaped steel and U-shaped roll-pressed skeleton 204 are arranged at the corners of the compartment bottom plate 1, side plate 2, top plate 3, front plate 4 and rear door plate 5 to form a vertical and horizontal "suspended integral woven metal" skeleton pre-embedded structure. This structural method not only greatly enhances the structural strength of the plate itself, but also greatly enhances the riveting connection strength between the plates when the compartment is assembled. Compared with the traditional XPS refrigerated compartment plate that adopts the full wooden square frame structure and metal rectangular tube pre-embedded welding process, the structural strength is higher and the dead weight is more than 15% lighter; Secondly, the sealed cavity structure formed by the corner combination of the compartment bottom plate 1, side plate 2, top plate 3, front plate 4 and rear door plate 5, through the injection foam filling and bonding process, not only enhances the structural strength of the entire compartment, but also realizes the closed loop of the insulation core material between the panels, which greatly improves the air tightness of the compartment and greatly reduces the thermal conductivity. Compared with the traditional XPS refrigerated compartment, the air tightness of the entire compartment is improved by 200%, and the insulation performance is improved by more than 30%; Finally, the frame of the refrigerated compartment floor 1 is provided with plywood 102, the load-bearing surface is paved with a skin sheet 103, and the steel-plastic composite reinforced I-shaped beam 101 and the h-shaped composite frame profile 104 made of polymer profiles are bolted to form a frame combination of the bottom plate 1, and then the XPS core sheet 203 is filled, so as to achieve higher lightweight, high strength and corrosion resistance of the compartment floor 1. It also greatly improves the air tightness and thermal insulation performance of the compartment. The thermal insulation performance of the whole compartment can reach 110 minutes, and the time for the temperature inside the compartment to rise from 20° to 0° at an ambient temperature of 30°. The simpler compartment structure can reduce the weight of the compartment, indirectly reduce the fuel / power loss of the refrigerated truck, reduce the transportation cost of customers, and also reduce the production cost.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new structure of a refrigerated compartment with XPS core material, characterized by: The new structure of the refrigeration compartment of the XPS core material comprises a bottom plate (1), side plates (2), a top plate (3), a front plate (4) and a rear door plate (5); the side plates (2) are arranged on both sides of the top of the bottom plate (1); the top plate (3) is arranged on the top of the side plate (2); the front plate (4) is arranged at the front end of the bottom plate (1), the side plates (2) and the top plate (3); and the rear end of the bottom plate (1), the side plates (2) and the top plate (3) is arranged at the rear end of the bottom plate (1), the side plates (2) and the top plate (3).

2. According to claim 1, a new structure of a refrigerated compartment of XPS core material is characterized by: The side panels (2), top panels (3) and front panels (4) are composed of a second skin plate (201), a C-shaped roll-pressed metal strip (202), an XPS core plate (203) and a U-shaped roll-pressed frame (204); the second skin plate (201) is arranged on the inner and outer sides of the plate; an XPS core plate (203) is embedded in the plate; a pouring cavity (205) is arranged between adjacent XPS core plates (203); a U-shaped roll-pressed frame (204) is arranged in the pouring cavity (205); the upper and lower surfaces of the XPS core plate (203) are inlaid with C-shaped roll-pressed metal strips (202); the C-shaped roll-pressed metal strips (202) inlaid on the upper and lower surfaces are welded to the U-shaped roll-pressed frame (204) to form a pre-embedded structure of a suspended integral woven metal frame.

3. The new structure of a refrigerated compartment of an XPS core material according to claim 2 is characterized in that: The bottom plate (1) frame is composed of a steel-plastic composite reinforced I-shaped cross beam (101), a plywood (102), a skin plate (103) and an H-shaped composite frame profile (104). The top of the bottom plate (1) frame is provided with the plywood (102) and the skin plate (103). The left and right sides and the front end of the bottom plate (1) frame are provided with H-shaped composite frame profiles (104). The steel-plastic composite reinforced I-shaped cross beam (101) is arranged transversely between the H-shaped composite frame profiles (104) on the left and right sides. The steel-plastic composite reinforced I-shaped cross beam (101) and the H-shaped composite frame profile (104) are connected by bolts to form an overall frame structure.

4. The new structure of the refrigerated compartment of the XPS core material according to claim 3 is characterized by: The lower sides of the U-shaped roller-pressed frames (204) of the left and right side plates (2) are connected to the corresponding positions of the side cross beams of the bottom plate (1) by punching, tapping and bolting, and the lower sides of the U-shaped roller-pressed frames (204) of the front plate (4) are connected to the corresponding positions of the H-shaped composite frame profile (104) at the front end of the bottom plate (1) by punching, tapping and bolting.

5. The new structure of a refrigerated compartment of an XPS core material according to claim 4 is characterized in that: The side panels (2), top panel (3), front panel (4) and rear door panel (5) are assembled by riveting the panels inside and outside with aluminum alloy profiles with sealing adhesive grooves, and the assembled positions of the panels form a sealed cavity structure.

6. A manufacturing process for a refrigerated compartment of XPS core material, characterized in that: It is used to prepare a new structure of a refrigerated compartment of the XPS core material according to any one of claims 1 to 5, and the manufacturing process comprises the following steps: S1. A second skin sheet (201) is arranged inside and outside the left and right side panels (2), the top panel (3) and the front panel (4) of the compartment body. A U-shaped roll-formed frame (204) and a C-shaped roll-formed metal strip (202) are arranged between adjacent XPS core panels (203). The C-shaped roll-formed metal strip (202) is embedded in the upper and lower surfaces of the XPS core panel (203) after slotting and milling, and is welded to the U-shaped roll-formed frame (204) to form a perfusion cavity (205) of a suspended metal frame. Polyurethane foam material is perfused into the perfusion cavity (205) to fill it. After filling, an integral XPS core panel (203) of the compartment panel is formed. The second skin sheet (201) and the integral XPS core panel (203) are compounded by heating, pressurizing and bonding after glue spraying to form an integral panel. S2, the frame of the box bottom plate (1) is made of a polymer pultruded profile to form a combined structure of a frame and a crossbeam, and the frame of the bottom plate (1) is filled with an XPS sheet, which is then bonded with the inner and outer skin sheets (103) by heating and pressurizing to form the box bottom plate (1); S3, the left and right side panels (2) and the lower side of the front panel (4) of the box body are connected with the corresponding positions of the cross beam of the bottom panel (1) by drilling and tapping holes, and the left and right side panels (2) and the lower side of the front panel (4) of the box body are connected with the inner side of the bottom panel (1) by riveting with aluminum alloy profiles with sealing glue, and a cavity structure with internal and external sealing is formed at the combined position of the left and right side panels (2) and the lower side of the front panel (4) of the box body and the bottom panel (1); S4, the left and right side panels (2), the top panel (3), the front panel (4) and the rear door panel (5) of the compartment body are assembled by riveting the panels inside and outside with aluminum alloy profiles with sealing adhesive grooves and riveting them with sealing adhesive, so as to form a sealed cavity structure at the assembly position of each panel; S5. Perform foaming filling and bonding in the cavity structure at each panel assembly position.

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