Stacking packaging box of rotational molding steel frame combination for engine

Abstract

The utility model relates to a packaging box, in particular to a stacking packaging box combined by a rotational moulding steel frame for an engine, which solves the problems that the existing engine packaging box with the weight of more than or equal to 500kg, the length of more than or equal to 3m and the stacking of more than two layers is formed by welding and paint spraying, and is large in deformation, high in maintenance cost and large in occupied area of three-layer stacking in a storehouse in the use process. The box body and the box cover are manufactured through the rotational molding process, paint spraying is avoided, corrosion resistance is achieved, the structural strength of the packaging box is improved through the built-in box body steel framework and the built-in box cover steel framework, and the rotational molding box cover is matched with the protrusions and the grooves of the rotational molding box body. The two adjacent packaging boxes located on the same layer are connected with the second bolt rapid clamp through the second hooks, the two adjacent packaging boxes located on the upper layer and the lower layer are connected with the first bolt rapid clamp through the first hooks, and during warehouse stacking and transportation stacking, all the packaging boxes are interlocked, the stability is improved, and the packaging boxes are not prone to falling off. Multiple layers can be stacked, and the space utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to a packaging box, in particular to a stacking packaging box composed of a rotationally molded steel frame for an engine. Background Art

[0002] In the aerospace field, engines with a weight of ≥500kg, a length of ≥3 meters, and a stacking capacity of more than 2 layers are generally transported and stored in steel packaging boxes. The packaging boxes are generally made of Q235 steel and are processed by welding and painting. The welding mainly relies on manual labor, resulting in high processing costs. Because the packaging box is made of Q235 steel, in order to prevent the packaging box from rusting, it is necessary to paint the surface. The packaging box needs to be transported by lifting equipment during transportation. It is easy to bump during transportation, causing paint to fall off. If the paint is not returned to the factory for repainting in time after the paint falls off, the packaging box will rust. If the repainting is repeated more than 150 times, the general packaging box needs to be scrapped, resulting in a reduced reuse rate. If there is a bump during transportation, it may also cause the internal structure of the steel packaging box to deform. In order to ensure safety, it needs to be returned to the factory for repair, resulting in an increase in the maintenance rate and high maintenance costs. In addition, when the existing steel packaging boxes are stacked, because there is a lack of connecting and fixing structures between each other, the stacking stability is not high. In order to ensure safety, generally only three layers can be stacked, resulting in reduced space utilization. Utility Model Content

[0003] The utility model aims to solve the technical problems that the existing engine packaging boxes with a weight of ≥500kg, a length of ≥3 meters and a stacking layer of more than 2 layers are processed by welding and painting, and there are large deformations, high maintenance costs and a large area occupied by 3-layer stacking in the warehouse during use, and to provide a stacking packaging box with a rotationally molded steel frame combination for the engine.

[0004] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0005] A stacking packaging box for an engine with a roto-molded steel frame assembly, which is special in that it comprises a roto-molded box body, a box body steel frame arranged inside the roto-molded box body, a roto-molded box cover arranged on the top of the roto-molded box body, and a box cover steel frame arranged inside the roto-molded box cover;

[0006] The roto-molded box body and the roto-molded box cover are connected by a plurality of locks;

[0007] The roto-molded box and the box steel frame are both rectangular structures. The box steel frame includes four box columns arranged at the four corners inside the roto-molded box. The upper ends of two adjacent box columns are connected to the box upper beam, and the lower ends of two adjacent box columns are connected to the box lower beam.

[0008] The roto-molded box cover and the box cover steel frame are both rectangular structures. The box cover steel frame includes four box cover columns arranged at the four corners inside the roto-molded box cover, the upper ends of two adjacent box cover columns are connected to the box cover upper beam, and the lower ends of two adjacent box cover columns are connected to the box cover lower beam;

[0009] A buffer bracket for supporting the engine is arranged inside the box steel frame;

[0010] The top of the roto-molded box cover is provided with a plurality of protrusions, the extension direction of the protrusions is parallel to the extension direction of the short side of the roto-molded box cover, and the plurality of protrusions are arranged along the extension direction of the long side of the roto-molded box cover, and the bottom of the roto-molded box body is provided with a plurality of grooves corresponding to the plurality of protrusions;

[0011] A plurality of first hooks are arranged near the bottom at both ends of the roto-molded box, and the plurality of first hooks are symmetrically arranged about the middle dividing plane of the short side of the roto-molded box, and the first hooks are fixedly connected to the lower cross beam of the box; a plurality of first door bolt quick clamps are arranged at both ends of the roto-molded box cover corresponding to the positions of the plurality of first hooks; second hooks are respectively arranged on both sides of the end surface of one end of the roto-molded box, and the second hooks are fixedly connected to the box column, and second door bolt quick clamps are arranged on both sides of the end surface of the other end of the roto-molded box corresponding to the positions of the second hooks;

[0012] The first door bolt quick clamp and the second door bolt quick clamp have the same structure, both include a base, a handle and a hook ring cooperating with the first hook or the second hook, the handle includes a first horizontal section, a vertical section and a second horizontal section connected in sequence, the outer end of the first horizontal section is hinged to the base, a pin hole is provided at the intersection of the first horizontal section and the vertical section, the hook ring is hinged to the handle through a pin shaft arranged in the pin hole, the base of the first door bolt quick clamp is fixedly connected to the cross beam on the box cover, and the base of the second door bolt quick clamp is fixedly connected to the box body column.

[0013] Furthermore, a forklift sleeve is connected to the bottom of the box steel frame, and two forklift sleeves are provided, and both ends of the forklift sleeves are respectively connected to two lower cross beams of the box on the long side of the box steel frame, and the two forklift sleeves are symmetrically arranged with respect to the center dividing plane of the long side of the rotationally molded box. The bottom of the rotationally molded box is provided with an installation groove corresponding to the forklift sleeve, the forklift sleeve is located in the installation groove, and the bottom surface of the forklift sleeve and the bottom surface of the rotationally molded box are located in the same plane.

[0014] Furthermore, it also includes a grounding wire, one end of which extends into the roto-molded box for connection with the engine, and the other end extends out of the roto-molded box for connection with an external terminal, and the external terminal is grounded.

[0015] Furthermore, the buffer bracket includes a plurality of sponge support plates arranged inside the steel frame of the box body, the plurality of sponge support plates are arranged along the extension direction of the long side of the steel frame of the box body, and an arc-shaped notch adapted to the shape of the outer wall of the engine is opened on the sponge support plate; a fixing plate is arranged between the upper cross beam of the box body and the lower cross beam of the box body located on the long side of the steel frame of the box body corresponding to the plurality of sponge support plates, the fixing plate includes a first fixing plate and a second fixing plate, and an installation space is formed between the first fixing plate and the second fixing plate, and two ends of the sponge support plate are respectively clamped in the installation space, and a supporting plate is arranged at the bottom of the sponge support plate, and the two ends of the supporting plate are respectively connected to the two lower cross beams of the box body located on the long side of the steel frame of the box body.

[0016] Furthermore, an arc-shaped upper clamp is provided on the top of the sponge support plate, and the arc-shaped upper clamp includes a first split and a second split. Sponge layers are provided on the inner walls of the first split and the second split. One end of the first split is hinged to the upper cross beam of the box on one of the long sides of the box steel frame, and one end of the second split is hinged to the upper cross beam of the box on the other long side of the box steel frame. The other ends of the first split and the second split are connected by a connecting component.

[0017] Furthermore, the connecting assembly includes a connecting hook arranged on the other end of the first split body and a connecting seat arranged on the other end of the second split body, a connecting handle is hinged on the connecting seat, the front end of the connecting handle is hinged on the connecting seat, the middle part of the connecting handle is hinged with a connecting shaft, the connecting shaft is radially provided with a threaded hole, a connecting hook ring for cooperating with the connecting hook is screwed into the threaded hole, a fixing seat is also provided on the connecting seat, a first fixing pin hole is opened on the fixing seat along a direction parallel to the axis of the connecting shaft, and a second fixing pin hole is correspondingly opened on the connecting handle for passing the pin shaft through the first fixing pin hole and the second fixing pin hole, so as to fix the position of the connecting handle after the connecting hook is tightly hung by the connecting hook ring.

[0018] Furthermore, four lifting rings are symmetrically arranged on the outer walls of the two long sides of the rotomolding box, with two on each side. The two lifting rings on the same side are symmetrically arranged with respect to the center dividing plane of the long sides of the rotomolding box. A lifting ring mounting tube is arranged between the upper cross beam and the lower cross beam of the box on the same long side of the rotomolding box corresponding to the position of the lifting ring, and each lifting ring is detachably connected to the lifting ring mounting tube.

[0019] Furthermore, a front fixed baffle and a rear fixed baffle are respectively arranged inside the steel frame of the box and near the two ends of the steel frame of the box, and a sponge layer is arranged on the inner side of both. The bottom of the front fixed baffle and the rear fixed baffle are connected to a mounting plate, and the two ends of the mounting plate are respectively connected to the two lower cross beams of the box located on the long sides of the steel frame of the box.

[0020] Furthermore, a plurality of box cover reinforcement beams are arranged between the two box cover upper beams located on the long sides of the box cover steel frame; a plurality of box cover reinforcement columns are arranged between the box cover upper beam and the box cover lower beam located on the same long side of the box cover steel frame;

[0021] A plurality of box reinforcement beams are arranged between the two box lower beams located on the long sides of the box steel frame; a plurality of box reinforcement columns are arranged between the box upper beam and the box lower beam located on the same long side of the box steel frame. The box reinforcement beams, box reinforcement columns, box cover reinforcement beams and box cover reinforcement columns strengthen the structural strength of the box steel frame and the box cover steel frame, thereby improving the stacking stability of the entire packaging box.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] (1) The roto-molded box body and roto-molded box cover of a stacking packaging box for an engine provided by the utility model are made of a roto-molded steel frame combination using a paint-free roto-molding process, and do not need to be sprayed with paint to prevent external rust, thus saving the cost of later repainting. At the same time, the roto-molded box body and the roto-molded box cover have excellent properties such as light weight, good toughness, heat insulation, impact resistance, wear resistance, waterproofness, moisture resistance, and corrosion resistance. The built-in box body steel frame and box cover steel frame further improve the structural strength of the entire packaging box, thereby improving the stability during stacking. A plurality of protrusions are arranged on the top of the roto-molded box cover, and the extension direction of the protrusions is parallel to the extension direction of the short side of the roto-molded box cover, and the plurality of protrusions are arranged along the extension direction of the long side of the roto-molded box cover. A plurality of grooves are arranged on the bottom of the roto-molded box body corresponding to the plurality of protrusions. The stacking stability of the packaging box is improved through the cooperation of the grooves and the protrusions. Two adjacent packing boxes on the same layer are connected to each other by the cooperation of the second hook and the second bolt quick clamp, while two adjacent packing boxes on the upper and lower layers are connected to each other by the cooperation of the first hook and the first bolt quick clamp. In this way, when stacking in the warehouse and transporting, the stacking stability is greatly improved by the cooperation of the grooves and the protrusions and the interlocking of the packing boxes by the first hook and the first bolt quick clamp and the second hook and the second bolt quick clamp. Compared with traditional steel packing boxes, more layers can be stacked, which improves the space utilization.

[0024] (2) The roto-molded box body and roto-molded box cover of the engine roto-molded steel frame stacking packaging box provided by the utility model are made by roto-molding technology, which does not require painting, has low maintenance costs, doubles the service life, and reduces costs during mass production.

[0025] (3) The utility model provides a stacking packaging box for an engine with a roto-molded steel frame combination, which is connected to a forklift sleeve at the bottom of the box steel frame, and the two forklift sleeves are symmetrically arranged about the middle dividing plane of the long side of the roto-molded box. A mounting groove is arranged at the bottom of the roto-molded box corresponding to the forklift sleeve, and the forklift sleeve is located in the mounting groove, and the bottom surface of the forklift sleeve is located in the same plane as the bottom surface of the roto-molded box. In this way, the fork tines of the forklift only need to be inserted into the forklift sleeve to lift the entire packaging box. At the same time, the forklift sleeve also plays a positioning role, so that after the entire packaging box is lifted, its center of mass is roughly located between the two fork tines of the forklift to prevent overturning.

[0026] (4) The utility model provides a stacking packaging box for an engine with a roto-molded steel frame combination, which is also provided with a grounding wire. One end of the grounding wire extends into the roto-molded box and is connected to the engine, and the other end extends out of the roto-molded box and is connected to an external terminal. The external terminal is grounded to conduct static electricity into the ground, thereby preventing static electricity from affecting the internal electrical components of the engine.

[0027] (5) The utility model provides a stacking packaging box composed of a rotationally molded steel frame for an engine, in which a first part and a second part are connected together by a connecting assembly to form an arc-shaped upper clamp to clamp the engine tightly, wherein the connecting hook ring is screwed into the threaded hole on the connecting shaft, and the position can be adjusted according to engines of different sizes, thereby ensuring that engines of different sizes can be clamped tightly to prevent bumps during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of an embodiment of a stacking packaging box of a rotationally molded steel frame assembly for an engine according to the utility model;

[0029] Figure 2 It is a three-dimensional structural diagram of an embodiment of the utility model (the roto-molded box body and the roto-molded box cover are not shown);

[0030] Figure 3 This is a schematic diagram of the cooperation between the rotationally molded box body and the box body steel frame in the embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the connection between the box body steel frame, the arc-shaped upper clamp and the forklift sleeve in the embodiment of the utility model;

[0032] Figure 5 This is a schematic diagram of the cooperation between the steel frame of the box cover and the rotationally molded box cover in the embodiment of the utility model;

[0033] Figure 6 This is a schematic diagram of the three-dimensional structure of the connecting assembly in the embodiment of the utility model;

[0034] Figure 7 It is a schematic diagram of the positions of the ground wire, the first door bolt quick clamp, and the second door bolt quick clamp in the embodiment of the utility model;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the protrusion in the embodiment of the utility model;

[0036] Fig. 9 This is a schematic diagram of the three-dimensional structure of the groove in the embodiment of the utility model;

[0037] Fig.10 It is a schematic diagram of the three-dimensional structure of the first door bolt quick clamp in the embodiment of the utility model.

[0038] Description of reference numerals:

[0039] 1-Rotational molded box, 101-groove; 2-Box steel frame, 21-Box column, 22-Box upper beam, 23-Box lower beam, 24-Box reinforcement beam, 25-Box reinforcement column; 3-Rotational molded box cover, 31-protrusion; 4-Box cover steel frame, 41-Box cover column, 42-Box cover upper beam, 43-Box cover lower beam, 44-Box cover reinforcement beam, 45-Box cover reinforcement column; 5-Lock, 6-First bolt quick clamp, 61-Second bolt quick clamp, 62-Base, 63-Handle, 631-First horizontal section, 632-Vertical section, 633-second horizontal section; 64-hook, 65-first hook, 66-second hook; 7-lifting ring, 71-lifting ring mounting tube; 8-forklift casing, 9-grounding wire, 10-sponge support plate, 11-first fixed plate, 12-second fixed plate, 13-supporting plate, 14-first split, 15-second split, 16-connecting assembly, 161-connecting hook, 162-connecting seat, 163-connecting handle, 164-connecting shaft, 165-connecting hook, 166-fixed seat; 17-front fixed baffle, 18-rear fixed baffle, 19-mounting plate. DETAILED DESCRIPTION

[0040] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0041] Reference Figure 1-Figure 10 The utility model is a stacking packaging box of a roto-molded steel frame combination for an engine, comprising a roto-molded box body 1, a box body steel frame 2 arranged inside the roto-molded box body 1, a roto-molded box cover 3 arranged on the top of the roto-molded box body 1, and a box cover steel frame 4 arranged inside the roto-molded box cover 3. The roto-molded box body 1 and the roto-molded box cover 3 are connected by a plurality of locks 5, the box body steel frame 2 and the roto-molded box body 1 are connected by bolts, and the box cover steel frame 4 and the roto-molded box cover 3 are also connected by bolts. The overall dimensions of the entire packaging box are 4300×780×720mm, and the engine with a size within φ450mm×3900mm is applicable. The weight of the entire packaging box is about 510Kg, which is about 120Kg lighter than the traditional steel packaging box.

[0042] The roto-molded box body 1 and the roto-molded box cover 3 are both made by roto-molding. Compared with traditional steel packaging boxes, they have good anti-corrosion performance, and have the advantages of light weight, good toughness, heat insulation, impact resistance, wear resistance, waterproofness, moisture resistance, etc. Because there is no need for painting, and the probability of internal deformation after impact is also reduced accordingly, the cost of repairing deformed parts and repainting is saved. In addition, the box body steel frame 2 built into the roto-molded box body 1 and the box cover steel frame 4 built into the roto-molded box cover 3 improve the overall structural strength of the packaging box and improve its load-bearing capacity during stacking.

[0043] The roto-molded box 1 and the box steel frame 2 are both rectangular structures. The structure of the box steel frame 2 is as follows: Figure 4 As shown, it includes four box columns 21 arranged at the four corners inside the rotationally molded box 1, the upper ends of two adjacent box columns 21 are connected with a box upper beam 22, and the lower ends of two adjacent box columns 21 are connected with a box lower beam 23. In order to ensure the structural strength of the box steel frame 2, a plurality of box reinforcing beams 24 are arranged between the two box lower beams 23 located on the long sides of the box steel frame 2, and a plurality of box reinforcing columns 25 are arranged between the box upper beam 22 and the box lower beam 23 located on the same long side of the box steel frame 2. The box columns 21, the box upper beam 22, the box lower beam 23, the box reinforcing beam 24 and the box reinforcing columns 25 all adopt galvanized rectangular tubes with a specification of 50×25×3mm.

[0044] The roto-molded box cover 3 and the box cover steel frame 4 are also rectangular structures. The structure of the box cover steel frame 4 is as follows: Figure 5 As shown, it includes four box cover columns 41 arranged at the four corners inside the rotationally molded box cover 3, the upper ends of two adjacent box cover columns 41 are connected to the box cover upper beams 42, and the lower ends of two adjacent box cover columns 41 are connected to the box cover lower beams 43. In order to ensure the structural strength of the box cover steel frame 4, a plurality of box cover reinforcement beams 44 are arranged between the two box cover upper beams 42 located on the long sides of the box cover steel frame 4, and a plurality of box cover reinforcement columns 45 are arranged between the box cover upper beam 42 and the box cover lower beam 43 located on the same long side of the box cover steel frame 4. The box cover columns 41, the box cover upper beam 42, the box cover lower beam 43, the box cover reinforcement beam 44 and the box cover reinforcement columns 45 are all made of galvanized rectangular tubes with specifications of 50×25×3mm. The structural strength of the entire packaging box is further strengthened by the box body reinforcement beam 24, the box body reinforcement column 25, the box cover reinforcement beam 44 and the box cover reinforcement column 45, thereby improving the stacking stability.

[0045] In order to facilitate crane transportation, four lifting rings 7 are symmetrically arranged on the outer walls of the two long sides of the roto-molded box 1, two of which are arranged on each side, and the two lifting rings 7 on the same side are symmetrically arranged about the middle plane of the long side of the roto-molded box 1. Because the lifting of the entire packaging box needs to be completed by the lifting ring 7, the lifting ring 7 must be connected and fastened with the entire packaging box, so it must be connected with the box steel frame 2 located in the roto-molded box 1. Therefore, a lifting ring installation tube 71 is arranged between the upper crossbeam 22 and the lower crossbeam 23 of the box on the same long side of the roto-molded box 1, corresponding to the position of the lifting ring 7, and each lifting ring 7 is detachably connected to the lifting ring installation tube 71. In this way, the lifting rings 7 on the same side or the opposite side are connected by a sling, and the entire packaging box can be transported by a crane. Because the lifting ring 7 is subjected to great force during transportation, damage may occur inside it after a period of use, but it is difficult to observe with the naked eye. Therefore, the four lifting rings 7 are detachably connected to the lifting ring mounting tube 71, which is convenient for removal and flaw detection using flaw detection equipment. If damaged, it is also convenient for timely replacement.

[0046] When it is inconvenient to transport by crane, a forklift is needed, so a forklift sleeve 8 is connected to the bottom of the box steel frame 2. There are two forklift sleeves 8, and the two forklift sleeves 8 are symmetrically arranged about the middle dividing plane of the long side of the roto-molded box 1. The two ends of each forklift sleeve 8 are respectively connected to the two lower cross beams 23 of the box on the long side of the box steel frame 2. A mounting groove is arranged at the bottom of the roto-molded box 1 corresponding to the forklift sleeve 8. The forklift sleeve 8 is located in the mounting groove, and the bottom surface of the forklift sleeve 8 is located in the same plane as the bottom surface of the roto-molded box 1. In this way, the fork tines of the forklift only need to be inserted into the forklift sleeve 8 to lift the entire packaging box. At the same time, the forklift sleeve 8 also plays a positioning role, so that after the entire packaging box is lifted, its center of mass is roughly located between the two fork tines to prevent overturning.

[0047] When the engine is placed in the packaging box, static electricity will be generated due to friction between the two. If the static electricity is not discharged in time, it may affect the electrical components inside the engine. Therefore, the present embodiment is also provided with a grounding wire 9. One end of the grounding wire 9 extends into the roto-molded box 1 and is connected to the engine, and the other end extends out of the roto-molded box 1 and is connected to an external terminal. The external terminal is grounded to conduct static electricity into the ground to prevent static electricity from affecting the electrical components inside the engine.

[0048] The engine is placed in the rotationally molded box 1. In order to better support the engine and limit the movement of the engine in the rotationally molded box 1 to prevent it from being damaged during transportation, a plurality of buffer brackets are arranged inside the box steel frame 2 to support the engine. The buffer bracket includes a plurality of sponge support plates 10 arranged along the extension direction of the long side of the box steel frame 2. The buffer bracket is made of hard sponge material and has a certain structural strength without damaging the engine. An arc-shaped notch that matches the shape of the outer wall of the engine is opened on the sponge support plate 10, so that the engine will be stably supported after being placed in the arc-shaped notch. In order to fix the sponge support plate 10, a support plate 13 is arranged at the bottom of the sponge support plate 10, and the two ends of the support plate 13 are respectively connected to the two lower cross beams 23 of the box located on the long side of the box steel frame 2. At this time, there is no limit at both ends of the sponge support plate 10. If the engine moves axially during transportation, it will drive it to move, causing the engine to move more. Therefore, a fixing plate is provided between the upper cross beam 22 of the box body and the lower cross beam 23 of the box body located on the long side of the box body steel frame 2 corresponding to the multiple sponge support plates 10. The fixing plate includes a first fixing plate 11 and a second fixing plate 12. An installation space is formed between the first fixing plate 11 and the second fixing plate 12. The two ends of the sponge support plate 10 are respectively clamped in the installation space to complete the limit at both ends of the sponge support plate 10.

[0049] An arc-shaped upper clamp is arranged on the top of the sponge support plate 10, which includes a first split body 14 and a second split body 15. One end of the first split body 15 is hinged on the upper cross beam 22 of the box body on one of the long sides of the box steel frame 2, and one end of the second split body 15 is hinged on the upper cross beam 22 of the box body on the other long side of the box steel frame 2. The other ends of the first split body 14 and the second split body 15 are connected by a connecting component 16. After the connection, the engine will be clamped to limit the movement of the engine in the vertical direction and along the axial direction. A sponge layer is provided on the inner walls of the first split body 14 and the second split body 15 to prevent the outer wall of the engine from being damaged after the first split body 14 and the second split body 15 are connected and clamped to the engine.

[0050] The connecting assembly 16 includes a connecting hook 161 arranged on the other end of the first split body 14 and a connecting seat 162 arranged on the other end of the second split body 15. A connecting handle 163 is hinged on the connecting seat 162, and the front end of the connecting handle 163 is hinged on the connecting seat 162. A connecting shaft 164 is hinged on the middle part of the connecting handle 163. The connecting shaft 164 is provided with a threaded hole in the radial direction, and a connecting hook 165 is screwed into the threaded hole, which is used to cooperate with the connecting hook 161. A fixing seat 166 is also provided on the connecting seat 162. The fixing seat 166 is fixed to the fixing seat 166. A first fixing pin hole is provided on the upper edge of the handle 166 parallel to the axis direction of the connecting shaft 164, and a second fixing pin hole is provided on the connecting handle 163 correspondingly. When the connecting handle 163 is rotated, the connecting hook 165 is hooked on the connecting hook 161, and then the connecting handle 163 is rotated in the opposite direction, so that the connecting hook 165 is hooked on the connecting hook 161, and then the pin shaft passes through the first fixing pin hole and the second fixing pin hole to fix the position of the connecting handle 163, so that during the transportation of the packaging box, the connecting handle 163 will not be loosened, ensuring that the engine is stably held. The connecting hook 165 is screwed into the threaded hole on the connecting shaft 164, and can be adjusted according to the position of engines of different sizes, ensuring that engines of different sizes can be held tightly to prevent bumps during transportation.

[0051] In order to prevent the two ends of the engine from colliding due to axial movement during transportation, a front fixed baffle 17 and a rear fixed baffle 18 are respectively arranged inside the box steel frame 2 and near the two ends of the box steel frame 2, and a sponge layer is arranged on the inner side of both. A mounting plate 19 is connected to the bottom of the front fixed baffle 17 and the rear fixed baffle 18, and the two ends of the mounting plate 19 are respectively connected to the two lower cross beams 22 of the box located on the long side of the box steel frame 2. In this way, the axial position of the engine is limited by the front fixed baffle 17 and the rear fixed baffle 18, and the two ends of the engine are in contact with the sponge layer, so even if squeezing occurs, it will not cause damage to the engine.

[0052] In order to improve the stacking stability, a plurality of protrusions 31 are arranged on the top of the roto-molded box cover 3, and the extension direction of the protrusions 31 is parallel to the extension direction of the short side of the roto-molded box cover 3, and the plurality of protrusions 31 are arranged along the extension direction of the long side of the roto-molded box cover 3, and a plurality of grooves 101 are arranged at the bottom of the roto-molded box body 1 corresponding to the plurality of protrusions 31, so that when the roto-molded box body 1 of one packaging box is placed on the roto-molded box cover 3 of another packaging box, the protrusions 31 will be stuck in the grooves 101 to prevent the packaging box from moving when shaking, and the structure is simple and the manufacturing is convenient.

[0053] Two first hooks 65 are provided at both ends of the roto-molding box 1 near the bottom. The two first hooks 65 are symmetrically arranged about the middle plane of the short side of the roto-molding box 1, and the first hooks 65 are fixedly connected to the lower cross beam 23 of the box. Two first door bolt quick clamps 6 are provided at both ends of the roto-molding box cover 3 corresponding to the two first hooks 65. Second hooks 66 are provided on both sides of the end surface of one end of the roto-molding box 1, respectively. The second hooks 66 are fixedly connected to the box column 21, and second door bolt quick clamps 61 are provided on both sides of the end surface of the other end corresponding to the second hooks 66. The first door bolt quick clamp 6 has the same structure as the second door bolt quick clamp 61, and its structure is as shown in FIG. Fig.10 As shown, they all include a base 62, a handle 63 and a hook ring 64 that cooperates with the first hook 65 or the second hook 66, wherein the base 62 of the first door bolt quick clamp 5 is fixedly connected to the cross beam 42 on the box cover, and the base 62 of the second door bolt quick clamp 61 is fixedly connected to the box body column 21. The handle 63 includes a first horizontal section 631, a vertical section 632 and a second horizontal section 633 which are connected in sequence. The outer end of the first horizontal section 631 is hinged to the base 62. A pin hole is provided at the intersection of the first horizontal section 631 and the vertical section 632. The hook ring 64 is hinged to the handle 63 through a pin shaft provided in the pin hole, and the second horizontal section 633 can be used for holding. When the hook ring 64 needs to cooperate with the first hook 65 or the second hook 66, the operator can hold the second horizontal section 633 and rotate the entire handle 63 in a direction away from the base 62, so that the hook ring 64 hooks the first hook 65 or the second hook 66. After hooking, the second horizontal section 633 is rotated in the opposite direction to be reset, and the connection is completed.

[0054] When stacking, two adjacent packaging boxes located on the same layer can place one of the packaging boxes with the second hook 66 and the other packaging box with the second bolt quick clamp 61 on the same side, so that both ends of the two packaging boxes can be connected with the second hook 66 and the second bolt quick clamp 61. This is the connection method for packaging boxes located on the same layer. The packaging boxes located in the upper and lower layers, among which the packaging boxes located in the upper layer, can be connected to each other through the first hooks 65 arranged at both ends of the roto-molded box body 1 near the bottom, and the first door bolt quick clamps 6 arranged at both ends of the roto-molded box cover 3 of the packaging box located in the lower layer. In this way, the stacked multi-layer packaging boxes are connected and interlocked between the upper and lower layers through the cooperation of the protrusion 31 on the top of the roto-molded box cover 3 and the groove 101 at the bottom of the roto-molded box body 1, and the first door bolt quick clamp 6 and the first hook 65, and the second door bolt clamp 61 and the second hook 66. The stacking stability is greatly improved. Experiments have proved that the packaging boxes of the utility model can be stacked up to 5 layers, which greatly improves the space utilization compared with traditional steel packaging boxes.

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or replacements within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope recorded in the claims.

Claims

1. A stacking packaging box composed of a rotationally molded steel frame for an engine, characterized in that: It comprises a roto-molded box body (1), a box body steel frame (2) arranged inside the roto-molded box body (1), a roto-molded box cover (3) arranged on the top of the roto-molded box body (1), and a box cover steel frame (4) arranged inside the roto-molded box cover (3); The roto-molded box body (1) and the roto-molded box cover (3) are connected via a plurality of lock buckles (5); The roto-molded box (1) and the box steel frame (2) are both rectangular structures. The box steel frame (2) comprises four box columns (21) arranged at four corners inside the roto-molded box (1). The upper ends of two adjacent box columns (21) are connected to a box upper crossbeam (22), and the lower ends of two adjacent box columns (21) are connected to a box lower crossbeam (23). The roto-molded box cover (3) and the box cover steel frame (4) are both rectangular structures. The box cover steel frame (4) comprises four box cover columns (41) arranged at four corners inside the roto-molded box cover (3). The upper ends of two adjacent box cover columns (41) are connected to a box cover upper crossbeam (42), and the lower ends of two adjacent box cover columns (41) are connected to a box cover lower crossbeam (43). A buffer bracket for supporting the engine is arranged inside the box steel frame (2); The top of the roto-molded box cover (3) is provided with a plurality of protrusions (31), the extension direction of the protrusions (31) is parallel to the extension direction of the short side of the roto-molded box cover (3), and the plurality of protrusions (31) are arranged along the extension direction of the long side of the roto-molded box cover (3), and the bottom of the roto-molded box body (1) is provided with a plurality of grooves (101) corresponding to the plurality of protrusions (31); A plurality of first hooks (65) are arranged near the bottom of both ends of the roto-molded box (1), the plurality of first hooks (65) are symmetrically arranged about the middle dividing plane of the short side of the roto-molded box (1), and the first hooks (65) are fixedly connected to the lower cross beam (23) of the box; a plurality of first door bolt quick clamps (6) are arranged at both ends of the roto-molded box cover (3) at positions corresponding to the plurality of first hooks (65); second hooks (66) are respectively arranged on both sides of the end surface of one end of the roto-molded box (1), the second hooks (66) are fixedly connected to the box column (21), and second door bolt quick clamps (61) are arranged on both sides of the end surface of the other end of the roto-molded box (1) at positions corresponding to the second hooks (66); The first door bolt quick clamp (6) and the second door bolt quick clamp (61) have the same structure, both comprising a base (62), a handle (63) and a hook ring (64) matched with a first hook (65) or a second hook (66); the handle (63) comprises a first horizontal section (631), a vertical section (632) and a second horizontal section (633) connected in sequence; the outer end of the first horizontal section (631) is hinged to the base (62); a pin hole is provided at the intersection of the first horizontal section (631) and the vertical section (632); the hook ring (64) is hinged to the handle (63) via a pin shaft provided in the pin hole; the base (62) of the first door bolt quick clamp (6) is fixedly connected to the cross beam (42) on the box cover; the base (62) of the second door bolt quick clamp (61) is fixedly connected to the box body column (21).

2. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 1, characterized in that: The bottom of the box steel frame (2) is connected to a forklift sleeve (8), two forklift sleeves (8) are provided, and the two ends of the forklift sleeves (8) are respectively connected to the two lower cross beams (23) of the box on the long side of the box steel frame (2), and the two forklift sleeves (8) are symmetrically arranged with respect to the center dividing plane of the long side of the rotationally molded box (1), and the bottom of the rotationally molded box (1) is provided with a mounting groove corresponding to the forklift sleeve (8), and the forklift sleeve (8) is located in the mounting groove, and the bottom surface of the forklift sleeve (8) and the bottom surface of the rotationally molded box (1) are located in the same plane.

3. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 1 or 2, characterized in that: It also includes a grounding wire (9), one end of which extends into the roto-molded box (1) for connection with the engine, and the other end of which extends out of the roto-molded box (1) for connection with an external terminal, and the external terminal is grounded.

4. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 3, characterized in that: The buffer bracket comprises a plurality of sponge support plates (10) arranged inside the box steel frame (2), the plurality of sponge support plates (10) being arranged along the extension direction of the long side of the box steel frame (2), and an arc-shaped notch matching the shape of the outer wall of the engine is opened on the sponge support plate (10); a fixing plate is arranged between the box upper cross beam (22) and the box lower cross beam (23) located on the long side of the box steel frame (2) corresponding to the plurality of sponge support plates (10), the fixing plate comprises a first fixing plate (11) and a second fixing plate (12), an installation space is formed between the first fixing plate (11) and the second fixing plate (12), and two ends of the sponge support plate (10) are respectively clamped in the installation space, and a supporting plate (13) is arranged at the bottom of the sponge support plate (10), and two ends of the supporting plate (13) are respectively connected to two box lower cross beams (23) located on the long side of the box steel frame (2).

5. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 4, characterized in that: The top of the sponge support plate (10) is provided with an arc-shaped upper hoop, which includes a first sub-body (14) and a second sub-body (15). Sponge layers are provided on the inner walls of the first sub-body (14) and the second sub-body (15). One end of the first sub-body (14) is hinged to an upper cross beam (22) of the box body on one of the long sides of the box body steel frame (2), and one end of the second sub-body (15) is hinged to an upper cross beam (22) of the box body on the other long side of the box body steel frame (2). The other ends of the first sub-body (14) and the second sub-body (15) are connected via a connecting assembly (16).

6. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 5, characterized in that: The connecting assembly (16) comprises a connecting hook (161) arranged on the other end of the first split body (14) and a connecting seat (162) arranged on the other end of the second split body (15); a connecting handle (163) is hingedly connected to the connecting seat (162); the front end of the connecting handle (163) is hingedly connected to the connecting seat (162); the middle part of the connecting handle (163) is hingedly connected to a connecting shaft (164); a threaded hole is radially provided on the connecting shaft (164); a threaded hole for connecting with the connecting shaft (164) is screwed into the threaded hole The connecting hook (161) cooperates with the connecting hook ring (165), and the connecting seat (162) is also provided with a fixing seat (166), and a first fixing pin hole is opened on the fixing seat (166) along the axial direction parallel to the connecting shaft (164), and a second fixing pin hole is correspondingly opened on the connecting handle (163), which is used to pass the pin shaft through the first fixing pin hole and the second fixing pin hole, and fix the position of the connecting handle (163) after the connecting hook ring (165) is hung on the connecting hook (161).

7. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 6, characterized in that: Four lifting rings (7) are symmetrically arranged on the outer walls of the two long sides of the rotationally molded box (1), with two lifting rings on each side. The two lifting rings (7) on the same side are symmetrically arranged with respect to the center dividing plane of the long side of the rotationally molded box (1). A lifting ring mounting tube (71) is arranged between the upper cross beam (22) and the lower cross beam (23) of the box on the same long side of the box steel frame (2) at the position corresponding to the lifting ring (7), and each lifting ring (7) is detachably connected to the lifting ring mounting tube (71).

8. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 7, characterized in that: A front fixed baffle (17) and a rear fixed baffle (18) are respectively arranged inside the box body steel frame (2) and close to the two ends of the box body steel frame (2), and a sponge layer is arranged on the inner side of both. The bottoms of the front fixed baffle (17) and the rear fixed baffle (18) are connected to a mounting plate (19), and the two ends of the mounting plate (19) are respectively connected to two box body lower cross beams (23) located on the long sides of the box body steel frame (2).

9. The stacking packaging box of the rotationally molded steel frame assembly for the engine according to claim 1, characterized in that: A plurality of box cover reinforcement beams (44) are arranged between two box cover upper beams (42) located on the long sides of the box cover steel frame (4); a plurality of box cover reinforcement columns (45) are arranged between the box cover upper beam (42) and the box cover lower beam (43) located on the same long side of the box cover steel frame (4); A plurality of box reinforcement beams (24) are arranged between two box lower beams (23) located on the long sides of the box steel frame (2); and a plurality of box reinforcement columns (25) are arranged between the box upper beam (22) and the box lower beam (23) located on the same long side of the box steel frame (2).

Images