Packaging box free drop test device
By designing a combined structure of rotary hook and double hook crane, the free fall of the packaging box is achieved, and the problem of existing testing institutions prone to failure when subjected to large loads is solved. It is suitable for free fall tests of light and heavy packaging boxes, improving the versatility and practicality of the device.
Patent Information
- Application Number
- CN202421512010.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing free drop test mechanism has a complex structure and is prone to failure when subjected to large loads. It is usually only used for free drop tests in lightweight packaging boxes and is difficult to apply to heavy-duty packaging boxes.
A free drop test device for packaging boxes is designed, using a combined structure of a rotating hook and a double-hook crane. The hook is pulled by the secondary hook of the double-hook crane to rotate about the rotation axis, thereby achieving free drop of the packaging box.
The device can simply and safely carry out free drop tests for light and heavy packaging boxes. It has a simple structure and convenient operation. It is suitable for all types of packaging boxes, improving the versatility and practicality of the device.
Smart Images
Figure CN222812547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a free fall test device, in particular to a packaging box free fall test device. Background Art
[0002] When loading and unloading workpieces wrapped in packaging boxes, whether it is manual loading and unloading or mechanical loading and unloading, there is a risk of the packaging box falling. In order to ensure the safety of the workpiece, the packaging box needs to have a strong anti-fall ability. Therefore, after the packaging box is processed, it is necessary to conduct a free fall test to simulate the situation of the packaging box encountering a fall during loading and unloading and transportation, evaluate the strength of the transport packaging box's anti-fall ability when subjected to vertical impact, and test the damage of the packaging box after free fall, so as to verify the safety and reliability of the packaging box structure.
[0003] At present, common free-fall test mechanisms are generally retractable test benches or magnetic suction cups. Such free-fall test mechanisms have a relatively complex structure and are prone to failure when subjected to large loads. In order to protect the test mechanism, it is generally only used to perform free-fall tests on light packaging boxes, and is rarely used for free-fall tests on heavy packaging boxes. Utility Model Content
[0004] The purpose of the utility model is to solve the technical problems that the existing free drop test mechanism has a complex structure, is prone to failure when subjected to a large load, is generally only used to perform free drop tests on light packaging boxes, and is rarely used for free drop tests on heavy packaging boxes, and provides a free drop test device for packaging boxes.
[0005] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:
[0006] A packaging box free fall test device, which is special in that:
[0007] It includes a rotating hook and a double hook crane used in conjunction with the rotating hook;
[0008] The rotary hook comprises two hook plates arranged in parallel, the upper parts of the two hook plates are connected by a limiting wedge block, and the wedge-shaped end of the limiting wedge block faces downward; the lower parts of the two hook plates are connected by a rotating shaft, a hook is arranged between the two hook plates, and the hook is rotatably mounted on the rotating shaft, the hook is used to hang the packaging box, and the hook handle of the hook abuts against the wedge-shaped surface of the limiting wedge block;
[0009] The main hook of the double hook crane is connected to the upper part of the hook plate;
[0010] The auxiliary hook of the double-hook crane is connected to a position of the hook body side of the hook away from the opening, and is used to lift the hook to rotate around the rotation axis.
[0011] Furthermore, a first connecting hole is provided through the upper part of the two hook plates and the corresponding limiting wedge blocks, and the main hook of the double-hook crane is connected to the first connecting hole.
[0012] Furthermore, a second connecting hole is provided on the side of the hook body of the hook away from the opening, and the auxiliary hook of the double-hook crane is connected to the second connecting hole.
[0013] Furthermore, a first shackle is installed in the first connecting hole, and the first shackle is connected to the main hook of the double-hook crane through a main hook wire rope.
[0014] Furthermore, a second shackle is installed in the second connecting hole, and the second shackle is connected to the auxiliary hook of the double hook crane through an auxiliary hook wire rope.
[0015] Furthermore, a third shackle is hung on the hook, and the third shackle is connected to the packing box through a packing box sling.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] (1) The utility model provides a packaging box free fall test device, which utilizes the cooperation between a rotating hook and a double-hook crane, and the cooperation between the auxiliary hook of the double-hook crane and the hook. When the auxiliary hook pulls the hook, the hook rotates around the rotating axis, so that the packaging box falls off the hook. The free fall process is achieved through simple mechanical movement, which can realize the verification of the free fall test of light and heavy packaging boxes. The utility model has a simple structure, is easy to operate, and is highly practical.
[0018] (2) The utility model provides a packaging box free fall test device, which is connected to the main hook through a first shackle, connected to the auxiliary hook through a second shackle, and connected to the packaging box through a third shackle and a packaging box sling, thereby simplifying the connection difficulty and being able to meet different connection requirements by replacing different shackles, thereby improving the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a packaging box free fall test device embodiment of the utility model when it is in use;
[0020] Figure 2 It is a schematic diagram of the structure of a rotating hook in an embodiment of the utility model.
[0021] Explanation of the accompanying drawings: 1-main hook, 2-main hook wire rope, 3-first shackle, 4-rotating hook, 41-hook plate, 42-limiting wedge block, 43-rotating shaft, 44-hook, 45-second connecting hole, 46-first connecting hole; 5-third shackle, 6-packing box sling, 7-packing box, 8-second shackle, 9-auxiliary hook wire rope, 10-auxiliary hook. DETAILED DESCRIPTION
[0022] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0023] Reference Figure 1-Figure 2 As shown, a packaging box free fall test device includes a rotating hook 4 and a double-hook crane used in conjunction with the rotating hook 4; the double-hook crane is not shown in the figure.
[0024] like Figure 2 As shown, the rotary hook 4 includes two hook plates 41 arranged in parallel, the upper parts of the two hook plates 41 are connected by a limiting wedge block 42, and the wedge-shaped end of the limiting wedge block 42 faces downward; the lower parts of the two hook plates 41 are connected by a rotating shaft 43, a hook 44 is arranged between the two hook plates 41, and the hook 44 is rotatably mounted on the rotating shaft 43, and the material of the hook 44 is Q235; Figure 1 As shown, a third shackle 5 is hung in the hook 44 , and the third shackle 5 is connected to the packaging box 7 through the packaging box sling 6 , and the hook handle of the hook 44 abuts against the wedge surface of the limiting wedge block 42 .
[0025] like Figure 1 and Figure 2 As shown, a first connecting hole 46 is opened on the upper part of the two hook plates 41 and passes through the corresponding limiting wedge blocks 42. The two hook plates 41 and the limiting wedge blocks 42 are installed with a first shackle 3 through the first connecting hole 46; the first shackle 3 is connected to the main hook 1 of the double hook crane through the main hook wire rope 2.
[0026] like Figure 1 and Figure 2 As shown, a second connecting hole 45 is provided on the side of the hook body of the hook 44 away from the opening, and a second shackle 8 is installed on the hook 44 through the second connecting hole 45; the second shackle 8 is connected to the auxiliary hook 10 of the double hook crane through the auxiliary hook wire rope 9; the auxiliary hook 10 of the double hook crane lifts the hook 44 through the auxiliary hook wire rope 9 and the second shackle 8 to rotate it around the rotating shaft 43, so as to fall off the packaging box 7 hung in the hook 44, so as to facilitate the free fall test.
[0027] The packaging box free-fall test device can carry a packaging box 7 containing workpieces with a maximum weight of 1300kg to 1800kg.
[0028] In this embodiment, when the packing box 7 is lifted by the double hook crane, the main hook 1 of the double hook crane is in a stressed state, and the main hook wire rope 2 is stretched straight. When the hook 44 lifts the packing box 7 through the third shackle 5 and the packing box sling 6, the hook handle of the hook 44 is in contact with the wedge surface of the limiting wedge block 42 under the gravity of the packing box 7; when the packing box 7 is lifted to the required height for the test, the auxiliary hook 10 of the double hook crane pulls the hook 44 through the auxiliary hook wire rope 9 and the second shackle 8 to rotate it around the rotating shaft 43, and the third shackle 5 hanging in the hook 44 is dropped, and the packing box 7 is subjected to a free fall test.
[0029] Take any package 7 for free drop test. The package 7 has a deadweight of 500kg, an overall dimension of 4300mm×780mm×720mm, a load of 860kg, and is subjected to a free drop test at a free drop height of 0.35m. The test is carried out in accordance with 6.6.1.4 of the reference standard GB / T 5398-2016. The test process is as follows:
[0030] 1) Clean up the excess and sharp objects in the free fall test site of the packaging box 7;
[0031] 2) Detect the deadweight of the packaging box 7 and record it;
[0032] 3) The workpieces are evenly distributed in the packaging box 7, and the total weight of the packaging box 7 is not less than 1300 kg; at the same time, the workpieces are fixed to ensure that the workpieces are not loose or displaced in the packaging box 7;
[0033] 4) Fix the packing box 7 by the packing box sling 6 and connect it to the main hook 1 of the double hook crane by the first shackle 3. At the same time, make the angle between the packing box sling 6 and the upper surface of the packing box 7 be 45° to 50°;
[0034] 5) The packaging box 7 is lifted to a height of 0.35 m from the ground by a double-hook crane. The auxiliary hook 10 of the double-hook crane pulls the hook 44 through the auxiliary hook wire rope 9 and the second shackle 8 to rotate it around the rotation axis 43, and the third shackle 5 hanging in the hook 44 is dropped, and a free fall test is performed on the packaging box 7;
[0035] 6) After the drop test is completed, the packaging box 7 is comprehensively inspected, including key parts and stress-bearing hanging point connections; observe whether there are cracks, plastic deformation, loose connections, damage and breakage, loose and scattered counterweights, etc. on the packaging box 7;
[0036] Upon inspection, after the free fall test, packaging box 7 was in good condition, and no cracks, plastic deformation, loose connections, damage and breakage, loose and scattered counterweights were found. The structure of packaging box 7 was safe and reasonable, and the free fall test device for packaging box 7 performed well.
[0037] 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 packaging box free drop test device, characterized in that: It comprises a rotating hook (4) and a double-hook crane used in conjunction with the rotating hook (4); The rotary hook (4) comprises two hook plates (41) arranged in parallel, the upper parts of the two hook plates (41) are connected via a limiting wedge block (42), and the wedge-shaped end of the limiting wedge block (42) faces downward; the lower parts of the two hook plates (41) are connected via a rotating shaft (43), a hook (44) is arranged between the two hook plates (41), and the hook (44) is rotatably mounted on the rotating shaft (43), the hook (44) is used to hang the packaging box (7), and the hook handle of the hook (44) abuts against the wedge-shaped surface of the limiting wedge block (42); The main hook (1) of the double-hook crane is connected to the upper part of the hook plate (41); The auxiliary hook (10) of the double-hook crane is connected to a position of the hook body side of the hook (44) away from the opening, and is used to pull the hook (44) to rotate around the rotation axis (43).
2. The packaging box free fall test device according to claim 1, characterized in that: A first connection hole (46) is provided through the upper parts of the two hook plates (41) and the corresponding limiting wedge blocks (42), and the main hook (1) of the double-hook crane is connected to the first connection hole (46).
3. The packaging box free fall test device according to claim 1 or 2, characterized in that: A second connection hole (45) is provided at a position of the hook body side of the hook (44) away from the opening, and the auxiliary hook (10) of the double-hook crane is connected to the second connection hole (45).
4. The packaging box free fall test device according to claim 2, characterized in that: A first shackle (3) is installed in the first connecting hole (46), and the first shackle (3) is connected to the main hook (1) of the double hook crane through a main hook wire rope (2).
5. The packaging box free fall test device according to claim 3, characterized in that: A second shackle (8) is installed in the second connection hole (45), and the second shackle (8) is connected to the auxiliary hook (10) of the double hook crane through an auxiliary hook wire rope (9).
6. The packaging box free fall test device according to any one of claims 1 to 5, characterized in that: A third shackle (5) is hung on the hook (44), and the third shackle (5) is connected to the packing box (7) through a packing box sling (6).