Device for testing the strength of pallets

Abstract

The application provides a kind of test device of pallet strength, which includes support, pressure unit, contact and support;The pressure unit is fixedly connected with the support, the output end of the pressure unit is in abutment with the contact, the support is placed on the workbench, for supporting the pallet to be tested from the bottom, the contact can apply pressure to the top surface of the pallet to be tested under the action of the output end of the pressure unit, and then test the strength of the pallet.The test device of pallet strength provided by the embodiments of the application has the characteristics of simple structure, convenient operation, accurate testing, high efficiency and comprehensive test parameters compared with manual testing method, which can check the pallet and prevent the stack from collapsing due to insufficient strength of the pallet.

Description

Technical Field

[0001] This application relates to the technical field of testing equipment, specifically to a testing device for the strength of a pallet. Background Technology

[0002] Pallets are common and widely used in paper mills. They are used to store and transport rolls of paper, reams of paper, and A4 boxes of paper. Also known as pallets, pallets are flat structures used to support and transport goods, typically made of wood, plastic, or other materials. Pallets are widely used in the logistics and warehousing industries, improving loading and unloading efficiency and protecting goods during transport. Our company's pallets are primarily made of wood, with the load-bearing surface mostly made of plywood.

[0003] With the diversification of our paper types, after the A4 paper production machine was put into operation, pallet trays were also used for selling A4 paper for bags and boxes. However, recently, customers have reported that multiple layers of A4 paper stacked in the warehouse have repeatedly experienced spontaneous collapse, as shown in the attached picture. This is mostly manifested by damage to the bottom pallet, which makes it unable to support the weight above, causing it to tilt and collapse. The reason why A4 paper is prone to problems on pallets is because its stress surface is relatively independent, while roll paper and ream packaging have their entire surface in contact with the pallet.

[0004] Therefore, pallet quality, load-bearing capacity, and strength have become key performance indicators for our company. Currently, we use manual visual inspection combined with measuring tape to check the thickness of the pallets, manually inspecting the load-bearing surfaces for defects such as cracks and dents, and measuring whether each dimension meets standards. However, this purely manual inspection method has many defects and cannot accurately detect some hidden problems, such as the strength of the plywood (whether it has deteriorated due to long-term storage, gaps in the bonding of the plywood, or the presence of pieced-together fragments), unevenness across the entire surface, and unreliable anchor nails, all of which affect the quality of the pallets. Therefore, developing a testing device to compensate for the shortcomings of current manual inspection has become an urgent task. Utility Model Content

[0005] This application provides a test device for pallet strength. The test device includes a bracket, a pressure unit, a contact element, and a support element. The pressure unit is fixedly connected to the bracket, and the output end of the pressure unit abuts against the contact element. The support element is placed on a workbench to support the pallet to be tested from the bottom. The contact element can apply pressure to the top surface of the pallet to be tested under the action of the output end of the pressure unit, thereby testing the strength of the pallet.

[0006] In some optional embodiments, the support includes several vertical support beams and several horizontal support beams, the horizontal support beams being connected to the vertical support beams, and the pressure unit being fixedly connected to the horizontal support beams.

[0007] In some alternative embodiments, the pressure unit is a pneumatic cylinder, and the piston rod of the pneumatic cylinder abuts against the contact element.

[0008] In some alternative embodiments, the contact element is a pressure head, which is fixedly connected to the end of the piston rod.

[0009] In some alternative embodiments, the pressure head is a frustum-shaped structure.

[0010] In some alternative embodiments, the contact includes a contact plate and a contact frame, the contact plate being fixedly connected to the end of the piston rod, the contact plate being able to abut against the contact frame, and the contact frame being placed on the top surface of the test pallet.

[0011] In some alternative embodiments, the contact frame includes a first contact frame and a second contact frame, the first contact frame being positioned on top of the second contact frame and used to abut against the contact plate, and the second contact frame being used to abut against the top surface of the pallet to be tested.

[0012] In some optional embodiments, the second contact frame includes a first contact beam and a second contact beam, which are respectively connected to the first contact frame. The contact position with the top surface of the pallet to be tested can be adjusted by changing the connection position with the first contact frame.

[0013] In some alternative embodiments, the support member includes an adjusting member and a support beam, the support beam being placed on the adjusting member, the adjusting member being used to adjust the height of the support beam.

[0014] In some optional embodiments, there are multiple adjusting members, which are arranged sequentially along the length of the support beam and supported at the bottom of the support beam. Each adjusting member includes a first adjusting screw, a second adjusting screw, and an overlapping rod. The two ends of the overlapping rod are respectively connected to the first adjusting screw and the second adjusting screw, and the height of the overlapping rod is adjusted by adjusting nuts that cooperate with the first adjusting screw and the second adjusting screw.

[0015] The pallet strength testing device provided in this application embodiment has a simple structure and is easy to operate. It can test the strength of pallets. Compared with manual testing, it has the characteristics of accurate testing, high efficiency and comprehensive test parameters. It can inspect pallets and prevent the collapse of stacks due to insufficient pallet strength. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the pallet strength testing device of this application;

[0018] Figure 2 yes Figure 1 A partial structural schematic diagram of the test device in the embodiment;

[0019] Figure 3 yes Figure 2 A schematic diagram of the structure in the embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of one embodiment of the contact element of this application;

[0021] Figure 5 This is a schematic diagram of the structure of one embodiment of the support component of this application;

[0022] Figure 6 This is a partial structural schematic diagram of another embodiment of the testing device of this application. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0024] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] This application provides a test device for pallet strength, please refer to the following embodiments. Figures 1 to 3 , Figure 1 This is a schematic diagram of the overall structure of an embodiment of the pallet strength testing device of this application; Figure 2 yes Figure 1 A partial structural schematic diagram of the test device in the embodiment; Figure 3 yes Figure 2 The exploded view of the structure in this embodiment shows that the test device includes a bracket 100, a pressure unit 200, a contact member 300, and a support member 400.

[0027] Specifically, the pressure unit 200 is fixedly connected to the bracket 100, the output end of the pressure unit 200 abuts against the contact member 300, and the support member 400 is placed on the workbench 500 to support the test pallet 88 from the bottom. The contact member 300 can apply pressure to the top surface of the test pallet 88 under the action of the output end of the pressure unit 200, thereby testing the strength of the pallet 88.

[0028] Optionally, the support 100 in this embodiment includes several vertical support beams 110 and several horizontal support beams 120. The horizontal support beams 120 are connected to the vertical support beams 110, and the pressure unit 200 is fixedly connected to the horizontal support beams 120 via a support plate 102. The workbench 500 can be fixedly connected to the vertical support beams 110 or it can be another separate platform structure; no specific limitation is made here. The support 100 can be made entirely of stainless steel tubing.

[0029] In this embodiment, the pressure unit 200 can be a pneumatic cylinder. The cylinder body is fixedly connected to the support beam 120 via a support plate 102. Specifically, the support plate 102 has a central hole through which the cylinder head passes, and the support plate 102 is clamped on both sides with locking nuts. The support beam 120 is connected to the support plate 102 with a ring of screws. The piston rod of the pneumatic cylinder abuts against the contact member 300.

[0030] Optionally, the contact 300 in this embodiment includes a contact plate 310 and a contact frame 320. The contact plate 310 is fixedly connected to the end of the piston rod of the pneumatic cylinder. The contact plate 310 can abut against the contact frame 320. The contact frame 320 is placed on the top surface of the test pallet 88.

[0031] Please see Figure 4 , Figure 4 This is a schematic diagram of a contact frame according to an embodiment of the present application. The contact frame 320 may include a first contact frame 321 and a second contact frame 322. The first contact frame 321 is placed on top of the second contact frame 322 and is used to abut against the contact plate 310. The second contact frame 322 is used to abut against the top surface of the test pallet 88.

[0032] The second contact frame 322 further includes a first contact beam 3221 and a second contact beam 3222. The first contact beam 3221 and the second contact beam 3222 are respectively connected to the first contact frame 321. By changing the connection position with the first contact frame 321, the contact position with the top surface of the test pallet 88 can be adjusted. Specifically, the top of the first contact beam 3221 and the second contact beam 3222 can be provided with a connecting sleeve 3223, which is sleeved on the first contact frame 321.

[0033] Please see Figure 5 , Figure 5 This is a schematic diagram of a support component according to an embodiment of the present application. In this embodiment, the support component 400 includes an adjusting member 410 and a support beam 420. The support beam 420 is placed on the adjusting member 410, and the adjusting member 410 is used to adjust the height of the support beam 420. The support beam 420 is used to support the legs of the test pallet 88. Optionally, multiple sets of support components 400 can be used in this embodiment to support different legs of the test pallet 88.

[0034] Each set of support members can have multiple adjusting members 410. These adjusting members 410 are arranged sequentially along the length of the support beam 420 and supported at its bottom. Each adjusting member 410 may include a first adjusting screw 411, a second adjusting screw 412, and an overlapping rod 413. The two ends of the overlapping rod 413 are connected to the first adjusting screw 411 and the second adjusting screw 412, respectively, and its height is adjusted by adjusting nuts 414 that mate with the first adjusting screw 411 and the second adjusting screw 412. The support beam 420 rests on the overlapping rod 413.

[0035] In this embodiment, the contact structure is primarily used to test the overall bending strength of the pallet 88 under test. When a point pressure test is required on the surface of the pallet 88, only the contact structure needs to be changed.

[0036] Please see Figure 6 , Figure 6 This is a partial structural schematic diagram of another embodiment of the testing device of this application. Unlike the previous embodiment, in this embodiment, the contact member 300 is a pressure head, which is fixedly connected to the end of the piston rod of the pressure unit 200, and is used to abut against the surface of the test tray 88 to perform point pressure testing on the surface of the test tray 88. Optionally, the pressure head in this embodiment has a frustum-cone structure.

[0037] The testing device in this embodiment is easy to switch between different tests on the pallet; only the contact component needs to be replaced.

[0038] When testing the overall bending strength of a pallet, the operator first adjusts the first and second contact beams of the contact components to the designated positions, typically in the middle of the four feet of the pallet, according to the pallet's dimensions. Then, the adjusting nuts on the support components are adjusted to ensure the pallet is properly positioned at its height. Finally, the required holding time is set, completing the entire operation. The testing device in this embodiment allows for corresponding settings of the force and testing time for the pallet to accommodate pallets with different material requirements.

[0039] The pallet strength testing device provided in this application embodiment has a simple structure and is easy to operate. It can test the strength of pallets. Compared with manual testing, it has the characteristics of accurate testing, high efficiency and comprehensive test parameters. It can inspect pallets and prevent the collapse of stacks due to insufficient pallet strength.

[0040] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A device for testing the strength of a pallet, characterized in that, The testing device includes a bracket, a pressure unit, a contact element, and a support element. The pressure unit is fixedly connected to the bracket, and the output end of the pressure unit abuts against the contact element. The support element is placed on a workbench to support the pallet to be tested from the bottom. The contact element can apply pressure to the top surface of the pallet to be tested under the action of the output end of the pressure unit, thereby testing the strength of the pallet.

2. The testing apparatus according to claim 1, characterized in that, The support includes several vertical support beams and several horizontal support beams. The horizontal support beams are connected to the vertical support beams, and the pressure unit is fixedly connected to the horizontal support beams.

3. The testing apparatus according to claim 1, characterized in that, The pressure unit is a pneumatic cylinder, and the piston rod of the pneumatic cylinder abuts against the contact element.

4. The testing apparatus according to claim 3, characterized in that, The contact element is a pressure head, which is fixedly connected to the end of the piston rod.

5. The testing apparatus according to claim 4, characterized in that, The pressure head has a frustum-shaped structure.

6. The testing apparatus according to claim 3, characterized in that, The contact element includes a contact plate and a contact frame. The contact plate is fixedly connected to the end of the piston rod. The contact plate can abut against the contact frame. The contact frame is placed on the top surface of the test plate.

7. The testing apparatus according to claim 6, characterized in that, The contact frame includes a first contact frame and a second contact frame. The first contact frame is placed on top of the second contact frame and is used to abut against the contact plate. The second contact frame is used to abut against the top surface of the pallet to be tested.

8. The testing apparatus according to claim 7, characterized in that, The second contact frame includes a first contact beam and a second contact beam. The first contact beam and the second contact beam are respectively connected to the first contact frame. The contact position with the top surface of the pallet to be tested can be adjusted by changing the connection position with the first contact frame.

9. The testing apparatus according to claim 1, characterized in that, The support member includes an adjusting member and a support beam, the support beam being placed on the adjusting member, and the adjusting member being used to adjust the height of the support beam.

10. The testing apparatus according to claim 9, characterized in that, The number of adjusting components is multiple, and the multiple adjusting components are arranged sequentially along the length direction of the support beam and supported at the bottom of the support beam. Each adjusting component includes a first adjusting screw, a second adjusting screw, and an overlapping rod. The two ends of the overlapping rod are respectively connected to the first adjusting screw and the second adjusting screw, and the height of the overlapping rod is adjusted by adjusting nuts that cooperate with the first adjusting screw and the second adjusting screw.

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