A lightweight refrigerated box and a connecting device thereof for increasing the service life of the box

Abstract

The present invention discloses a lightweight refrigerated box and a connecting device thereof for improving the service life of the box body, belonging to the field of refrigerated vehicles, and the key points of the technical solution are that the refrigerated box comprises two wooden squares embedded at the inner edges of the box board of the refrigerated box, the two wooden squares are respectively located at two box boards of the refrigerated box that are perpendicular to each other, and the two wooden squares are fixedly connected by fastening bolts. The present invention has the effect of improving the connection structure between the box body and the box boards.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerated vehicles, and more particularly to a lightweight refrigerated box and a connecting device thereof for improving the service life of the box. Background Art

[0002] A refrigerated truck refers to a closed van transport truck used to maintain the temperature of frozen or fresh goods. A refrigerated truck is a special refrigerated transport vehicle equipped with a refrigeration unit and an insulated compartment. It is commonly used to transport frozen foods (refrigerated trucks), dairy products (dairy transport trucks), vegetables and fruits (fresh goods transport trucks), vaccines and medicines (vaccine transport trucks), etc.

[0003] At present, the Chinese invention patent with the publication number CN208698598U discloses a high-strength sealed and insulated compartment for refrigerated trucks, including a compartment body, a bottom plate, a side baffle, a top cover plate, a compartment door, a rubber strip, a hinge, a door handle, a sealing tape, a base, a mounting strip, a screw, a clamping plate, an insulation layer, a rivet, a connection groove and an adhesive layer. The compartment body is spliced ​​by three side baffles, a bottom plate and a top cover plate, and the connection groove generated when the plates are spliced ​​is filled with an adhesive layer. The adhesive layer is mainly composed of a two-component polyurethane structural adhesive and talcum powder, wherein the talcum powder accounts for 1 / 3. The two-component polyurethane structural adhesive is divided into: component A and component B, which are in a ratio of 6:1. They have the characteristics of strong adhesion, low thermal conductivity, good weather resistance stability, excellent strength and toughness, and enhance the overall strength, sealing and thermal insulation of the refrigerated truck compartment body, and prevent water leakage and air leakage in the compartment. The present invention has the characteristics of good sealing and thermal insulation.

[0004] The above-mentioned prior art solutions have the following defects: the side baffles and the bottom plate of the box body are only fixedly connected by an adhesive, and the connection strength is general. During long-term transportation, the refrigerated truck may suffer structural damage due to vibration during driving. Summary of the invention

[0005] The object of the present invention is to provide a connecting device for increasing the service life of a refrigerated box body, thereby increasing the strength of the connecting structure between the box body and box plates, and thus increasing the service life of the refrigerated box.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a connecting device for improving the service life of a refrigerated box, comprising two wooden squares embedded at the inner edge of a box board of the refrigerated box, the two wooden squares are respectively located at two box boards of the refrigerated box that are perpendicular to each other, and the two wooden squares are fixedly connected with a fastening bolt.

[0007] By adopting the above technical solution, two wooden squares are fixedly connected by fastening bolts, thereby fixing two adjacent box boards together, thereby improving the stability of the connection structure between the box boards.

[0008] The present invention is further configured as follows: the fastening bolt includes a first screw, the first screw is coaxially fixedly connected with a second screw, the thread pitch of the first screw is inconsistent with the thread pitch of the second screw, one of the wooden squares is provided with a first thread groove threadedly connected to the first screw, the other wooden square is coaxially provided with a second thread groove, a threaded sleeve is threadedly connected to the second thread groove, the threaded sleeve is sleeved on the second screw and the two are threadedly connected.

[0009] By adopting the above technical solution, the first screw is threadedly connected to a wooden block, and then the second screw is placed in the second thread groove, and then the second wooden block and the second screw are connected using a threaded sleeve, thereby achieving the two wooden blocks being fixedly connected by fastening bolts. Because the thread pitch of the first screw and the thread pitch of the second screw are different, the first screw and the second screw are prevented from rotating due to the mutual locking of the first screw and the second screw, and the fastening bolts are prevented from loosening due to vibration during vehicle driving, so that the connection structure between the refrigerator box bodies is more stable.

[0010] The present invention is further configured as follows: a slider is slidably connected to one end of the second screw, a groove matching the slider is formed at one end of the threaded sleeve, a circular groove is coaxially formed at one end of the second screw, and when the slider slides into the groove, the end face of the slider is aligned with the side wall of the circular groove, a plug is threadedly connected to one end of the second thread groove away from the second screw, and a block matching the circular groove is coaxially fixedly connected to one end of the plug facing the second thread groove.

[0011] By adopting the above technical solution, the plug is threadedly connected to the second threaded groove, the blocking block is inserted into the circular groove, and the blocking block is used to limit the movement of the slider, so that the slider locks the second screw and the threaded sleeve to prevent the second screw and the threaded sleeve from rotating relative to each other, thereby further increasing the stability of the connection structure between the refrigerator box bodies.

[0012] Another object of the present invention is to provide a lightweight refrigerator with greater structural strength and improved service life.

[0013] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lightweight cold storage box, comprising five box panels, wherein the box panels are divided into a bottom panel, a top panel and side panels, wherein there are three side panels and they are vertically fixedly connected to the bottom panel, and the three side panels are connected in sequence at the ends, and the top panel is fixedly connected to one end of the side panel away from the bottom panel, and the bottom panel, the top panel and the side panels form a rectangular box body with an opening, and the side panels and the bottom panel, the side panels, and the side walls and the top panel are all connected by a connecting device, and the connecting device comprises two wooden squares, and the two wooden squares are respectively located at two box panels of the cold storage box that are perpendicular to each other, and the two wooden squares are fixedly connected with a fastening bolt.

[0014] By adopting the above technical solution, two wooden squares are fixedly connected by fastening bolts, thereby fixing two adjacent box boards together, thereby improving the stability of the connection structure between the box boards.

[0015] The present invention is further configured as follows: the box board includes an insulation layer and glass fiber reinforced plastics respectively fixedly connected to both sides of the insulation layer; the wooden square is fixedly connected to the edge of the box board; and both sides of the wooden square are respectively bonded to two glass fiber reinforced plastics.

[0016] By adopting the above technical solution, the wooden squares are embedded in the box boards, thereby increasing the stability of the connection structure between the wooden squares and the box boards, and making the connection structure between the box boards more stable.

[0017] The present invention is further configured as follows: the bottom plate extends toward the glass fiber reinforced plastic outside the box body with an extension, and the width of the extension is equal to the thickness of the side plate.

[0018] By adopting the above technical solution, the adjacent box panels are positioned by using the extended edge, and the contact area between two adjacent box panels is increased, thereby further increasing the strength of the connection structure between the box panels.

[0019] The present invention is further configured as follows: the wooden square located in the side panel is a first wooden square, there are four first wooden squares, the four wooden squares are connected at their ends to form a rectangular frame, the wooden square in the bottom panel is a second wooden square, one end of the second wooden square is close to the first wooden square, and the first wooden square and the second wooden square are fixedly connected by fastening bolts.

[0020] By adopting the above technical solution, wooden squares are used to form a rectangular frame, thereby increasing the structural strength of the box board itself.

[0021] The present invention is further configured such that two adjacent first wooden squares in the same side panel are mortise-jointed.

[0022] By adopting the above technical solution, the connection structure between the first wooden squares on the same side panel is more stable, and the connection structure of the box is increased.

[0023] The present invention is further configured as follows: the second wooden blocks are rectangular parallelepipeds and are parallel to each other, and the two ends of the second wooden blocks in the length direction are flush with the two sides of the bottom plate.

[0024] By adopting the above technical solution, the second wooden beam is used to increase the strength of the bottom plate, so as to bear the weight of the materials to be refrigerated in the box.

[0025] In summary, the present invention has the following beneficial effects:

[0026] First, the wooden squares are embedded in the box boards, and two wooden squares are fixedly connected by fastening bolts, thereby fixing two adjacent box boards, thereby improving the stability of the connection structure between the box boards and improving the structural strength of the refrigerated box body;

[0027] Secondly, the first screw and the second screw that are coaxially fixedly connected are respectively threadedly connected between the two wooden squares, and the two wooden squares are fixedly connected by fastening bolts, so that the two adjacent box boards are fixedly connected, thereby improving the stability of the connection structure between the box boards;

[0028] Thirdly, the bottom plate has an extended edge extending toward the glass fiber reinforced plastic plate outside the box body, which is used to position adjacent box plates and increase the contact area between two adjacent box plates, thereby further increasing the strength of the connecting structure between the box plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a stereogram of Example 1;

[0030] Figure 2 This is a cross-sectional view of Example 1 for illustrating the connection device;

[0031] Figure 3 This is a three-dimensional diagram for showing the wooden connection structure of Example 1;

[0032] Figure 4 This is a cross-sectional view of Example 2 for illustrating the connection device;

[0033] Figure 5 This is an exploded view of Example 2 for showing the fastening bolts.

[0034] 10. The following are the numerals in the drawings: 100, box board; 101, bottom plate; 102, top plate; 103, side plate; 104, connecting device; 105, wooden square; 106, fastening bolt; 107, insulation layer; 108, fiberglass; 109, extension; 110, first wooden square; 111, second wooden square; 112, third wooden square; 113, first screw rod; 114, second screw rod; 115, first thread groove; 116, second thread groove; 117, threaded sleeve; 118, slider; 119, slot; 120, round groove; 121, plug; 122, block; 123, box door. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0036] Embodiment 1: A lightweight refrigerator, such as Figure 1As shown, it includes five box panels 100, and the box panels 100 are divided into a bottom panel 101, a top panel 102 and a side panel 103. The bottom panel 101 is arranged horizontally, and there are three side panels 103 and they are vertically fixedly connected to the bottom panel 101. The three side panels 103 are fixedly connected end to end in sequence. The top panel 102 is fixedly connected to one end of the side panel 103 away from the bottom panel 101, so as to form an opening on one side of the box body. The two side panels 102 close to the opening are respectively hinged with a sealed box door 123, and the two box doors 123 close the opening. The side panels 103 and the bottom panel 101, the side panels 103, and the side walls and the top panel 102 are first fixedly connected by gluing, and then connected by setting a connecting device 104.

[0037] like Figure 2 As shown, the connecting device 104 includes two wooden squares 105. The two wooden squares 105 are respectively embedded in two mutually perpendicular box boards 100 of the refrigerator, and a fastening bolt 106 is fixedly connected between the two wooden squares 105. The two wooden squares 105 are fixedly connected by the fastening bolts 106, so that two adjacent box boards 100 are fixedly connected, thereby improving the stability of the connection structure between the box boards 100.

[0038] like Figure 2 As shown, the box board 100 includes an insulation layer 107 and glass fiber reinforced plastics 108 fixedly connected to both sides of the insulation layer 107. The wooden square 105 is fixedly connected to the edges of the length and width of the box board 100, and the two sides of the wooden square 105 are respectively bonded to two glass fiber reinforced plastics 108. The insulation layer 107 is preferably an SPX extruded board, which is a recyclable insulation material and an environmentally friendly material; and the SPX extruded board is lighter than traditional polyurethane, which reduces the weight of the entire box body, thereby increasing the load capacity of the refrigerated truck.

[0039] like Figure 2 As shown, the bottom plate 101 has an extension 109 extending toward the fiberglass 108 outside the box body, and the width of the extension 109 is equal to the thickness of the side plate 103. The extension 109 is used to position adjacent box plates 100 and increase the contact area between two adjacent box plates, further increasing the strength of the connecting device 104 between the box plates 100.

[0040] like Figure 3As shown, the wood square 105 located in the side panel 103 is the first wood square 110. There are four first wood squares 110, and the four first wood squares 110 are connected at the ends to form a rectangular frame. The two adjacent first wood squares 110 in the same side panel 103 are mortise and tenoned, which increases the stability of the connection structure between the first wood squares 110 on the same side panel 103 and increases the strength of the connection structure of the box. The wood square 105 in the bottom panel 101 is the second wood square 111, which is a rectangular parallelepiped and parallel to each other. The two ends of the second wood square 111 in the length direction are flush with the two sides of the bottom panel 101, and one end of the second wood square 111 is close to the first wood square 110. The first wood square 110 and the second wood square 111 are fixedly connected by fastening bolts 106. Because the bottom panel 101 needs to carry the weight of the materials that need to be refrigerated in the box, the second wood square 111 is used to increase the strength of the bottom panel 101.

[0041] like Figure 3 As shown, the structure of the top plate 102 is the same as that of the side plate 103. The wood square 105 provided in the top plate 102 is a third wood square 112. There are four third wood squares 112. The four third wood squares 112 are connected at the ends to form a rectangular frame. Two adjacent third wood squares 112 in the same side plate 103 are mortise-jointed. The third wood square 112 of the top plate 102 and the first wood square 110 of the side plate 103 are fixedly connected by fastening bolts 106.

[0042] The specific working principle of this embodiment is as follows: the wooden square 105 is embedded in the box board 100, and two wooden squares 105 are fixedly connected by fastening bolts 106, so that two adjacent box boards 100 are fixedly connected, thereby improving the stability of the connection structure between the box boards 100 and improving the structural strength of the refrigeration box body. The wooden square 105 reduces the heat transfer performance relative to the metal frame, reduces the weight, and increases the load capacity of the refrigeration truck.

[0043] Embodiment 2: A connection device for increasing the service life of a refrigerated box, such as Figure 4 As shown, it includes two wooden squares 105 embedded at the inner edge of the refrigerator box board 100. The two wooden squares 105 are respectively located at two mutually perpendicular box boards 100 of the refrigerator. A fastening bolt 106 is fixedly connected between the two wooden squares 105.

[0044] like Figure 4As shown, the fastening bolt 106 includes a first screw rod 113, and the first screw rod 113 is coaxially fixedly connected with the second screw rod 114. The two wooden squares 105 are respectively provided with a first thread groove 115 and a second thread groove 116. The first thread groove 115 is a blind hole, and the second thread groove 116 is a through hole. The first screw rod 113 is threadedly connected with the first thread groove 115. The thread pitch of the first screw rod 113 is inconsistent with the thread pitch of the second screw rod 114. The second thread groove 116 is internally threadedly connected with a thread sleeve 117. The thread sleeve 117 has threads inside and outside. The internal threads are threadedly connected with the second screw rod 114, and the external threads are threadedly connected with the second thread groove 116. The thread pitch of the first screw rod 113 is inconsistent with the thread pitch of the second screw rod 114. The first screw 113 is threadedly connected to a wooden square 105, and then the second screw 114 is placed in the second thread groove 116, and then the second wooden square 105 and the second screw 114 are connected by the threaded sleeve 117, so that the two wooden squares 105 are fixedly connected by the fastening bolts 106. Because the thread pitch of the first screw 113 and the thread pitch of the second screw 114 are different, the first screw 113 and the second screw 114 are prevented from rotating due to the mutual locking action of the first screw 113 and the second screw 114, and the fastening bolts 106 are prevented from loosening due to vibration during the driving of the vehicle, so that the connecting device 104 between the refrigerator box bodies is more stable.

[0045] like Figure 5 As shown, in order to prevent the second screw rod 114 and the threaded sleeve 117 from rotating relative to each other, two sliders 118 are slidably connected to one end of the second screw rod 114. The two sliders 118 are parallel and along the radial direction of the second screw rod 114, and a groove 119 adapted to the slider 118 is provided at one end of the threaded sleeve 117. A circular groove 120 is coaxially provided at one end of the second screw rod 114. When the slider 118 slides into the groove 119, the end face of the slider 118 is aligned with the side wall of the circular groove 120. The slider 118 locks the relative position of the second screw rod 114 and the threaded sleeve 117 to prevent the second screw rod 114 and the threaded sleeve 117 from rotating relative to each other. A plug 121 is threadedly connected to one end of the second threaded groove 116 away from the second screw rod 114, and a block 122 adapted to the circular groove 120 is coaxially fixedly connected to one end of the plug 121 facing the second threaded groove 116. The plug 121 is threadedly connected in the second thread groove 116 , so that the clamping block 122 is inserted into the circular groove 120 , and the movement of the slider 118 is restricted by the clamping block 122 .

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A connection device for increasing the service life of a refrigerated box, characterized in that: It comprises two wooden squares (105) embedded at the inner edge of the box board (100) of the refrigerator, the two wooden squares (105) are respectively located at two box boards (100) of the refrigerator that are perpendicular to each other, and a fastening bolt (106) is fixedly connected between the two wooden squares (105); The fastening bolt (106) comprises a first screw rod (113), the first screw rod (113) is coaxially fixedly connected to a second screw rod (114), the thread pitch of the first screw rod (113) is inconsistent with the thread pitch of the second screw rod (114), one of the wooden blocks (105) is provided with a first thread groove (115) threadedly connected to the first screw rod (113), and the other wooden block (105) is coaxially provided with a second thread groove (116), the second thread groove (116) is internally threadedly connected to a thread sleeve (117), the thread sleeve (117) is sleeved on the second screw rod (114), and the two are threadedly connected; One end of the second screw rod (114) is slidably connected to a slider (118); one end of the threaded sleeve (117) is provided with a slot (119) adapted to the slider (118); one end of the second screw rod (114) is coaxially provided with a circular groove (120); when the slider (118) slides into the slot (119), the end surface of the slider (118) is aligned with the side wall of the circular groove (120); one end of the second thread groove (116) away from the second screw rod (114) is threadedly connected to a plug (121); one end of the plug (121) facing the second thread groove (116) is coaxially fixedly connected to a block (122) adapted to the circular groove (120).

2. A lightweight cold storage box, comprising five box panels (100), wherein the box panels (100) are divided into a bottom panel (101), a top panel (102) and a side panel (103), wherein there are three side panels (103) and they are vertically fixedly connected to the bottom panel (101), wherein the three side panels (103) are connected end to end in sequence, wherein the top panel (102) is fixedly connected to an end of the side panel (103) away from the bottom panel (101), wherein the bottom panel (101), the top panel (102) and the side panels (103) form a rectangular box body with an opening, wherein: The side panels (103) and the bottom panel (101), the side panels (103), and the side walls and the top panel (102) are all connected via a connecting device for increasing the service life of the refrigeration box as described in claim 1.

3. A lightweight refrigerator according to claim 2, characterized in that: The box panel (100) comprises a heat-insulating layer (107) and glass fiber reinforced plastics (108) respectively fixedly connected to two sides of the heat-insulating layer (107); the wooden square (105) is fixedly connected to the edge of the box panel (100); and two sides of the wooden square (105) are respectively bonded to two glass fiber reinforced plastics (108).

4. A lightweight refrigerator according to claim 3, characterized in that: The bottom plate (101) is provided with an extension edge (109) extending from the glass fiber reinforced plastic (108) toward the outside of the box body, and the width of the extension edge (109) is equal to the thickness of the side plate (103).

5. A lightweight refrigerator according to claim 4, characterized in that: The wooden beam (105) located in the side plate (103) is a first wooden beam (110), there are four first wooden beams (110), and the four wooden beams (105) are connected end to end to form a rectangular frame, the wooden beam (105) in the bottom plate (101) is a second wooden beam (111), one end of the second wooden beam (111) is close to the first wooden beam (110), and the first wooden beam (110) and the second wooden beam (111) are fixedly connected by fastening bolts (106).

6. A lightweight refrigerator according to claim 5, characterized in that: Two adjacent first wood squares (110) in the same side plate (103) are mortise-jointed.

7. A lightweight refrigerator according to claim 6, characterized in that: The second wooden blocks (111) are rectangular parallelepipeds and are parallel to each other; both ends of the second wooden blocks (111) in the length direction are flush with the two sides of the bottom plate (101).

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