Impact force testing device and method

Abstract

The application provides an anti-impact force testing device and method, the anti-impact force testing device comprises a placing table, a traction structure and a falling structure, the placing table is used for placing a to-be-tested piece, a fixing piece is arranged on the placing table, and the fixing piece is used for fixing the to-be-tested piece; the traction structure comprises a fixed pulley, a weight and a traction rope, one end of the traction rope is used for connecting the to-be-tested piece, and the other end of the traction rope is used for connecting the weight; and the falling structure is used for realizing falling of the weight. The anti-impact force testing device can simulate actual falling conditions of a product, simulate how much impact force the product can withstand in actual falling, test how much instantaneous impact force the product can actually withstand, simplify existing testing equipment and improve testing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of reliability testing technology, and more specifically, relates to an impact resistance testing device and method. Background Technology

[0002] LCD display modules require a backlight assembly to provide backlight to the panel. The backlight assembly connects the backlight and the panel through a light-shielding adhesive. In the reliability test specifications, LCD display modules have requirements for drop reliability. During the drop process, defects such as light leakage caused by backlight displacement account for a high percentage, and the bonding effect of the light-shielding adhesive directly affects the backlight displacement.

[0003] Currently, the industry standard for testing adhesive properties is to pull the product at a fixed speed and measure the tensile force during the separation process. However, this tensile test method can only test the adhesive force in a stable state and cannot simulate the impact force of a product being dropped in actual use. Summary of the Invention

[0004] The purpose of this invention is to provide an impact resistance testing device and method to solve the technical problem that the existing tensile testing methods can only test the adhesion force in a stable state and cannot simulate the impact force of a product falling during actual use.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The first aspect of the present invention provides an impact resistance testing device, comprising: a platform, a traction structure, and a drop structure;

[0006] The platform is used to place the test piece, and a fixing component is provided on the platform to fix the test piece; the traction structure includes a fixed pulley, a weight, and a traction rope, one end of the traction rope is used to connect to the test piece, and the other end of the traction rope is used to connect to the weight; the drop structure is used to realize the drop of the weight.

[0007] In one embodiment, a support frame is also included, on which both the fixed pulley and the drop structure are mounted.

[0008] In one embodiment, the drop structure includes a drive structure and a support platform, the support platform being used to hold the weight, and the drive structure being used to drive the support platform to drop.

[0009] In one embodiment, the support frame is detachably connected to the drive structure, and a control switch is provided on the support frame. The control switch is used to control the opening and closing of the drive structure so that the support platform falls.

[0010] In one embodiment, the heights of both the shelf and the support frame are adjustable.

[0011] In one embodiment, the height of the fixed pulley on the support frame is adjustable.

[0012] The first aspect of this invention provides a method for testing impact resistance, used to test the instantaneous impact resistance of a test piece, the test piece including a first connector and a second connector connected by an adhesive layer, the impact resistance testing method employing the impact resistance testing device described above, the method comprising:

[0013] Fix the first connector to the shelf, connect one end of the traction rope to the second connector, and connect the other end of the traction rope to the weight.

[0014] The weight is subjected to free fall.

[0015] When the weight falls to its lowest point, the impact force borne by the test piece is judged by the relative displacement between the first and second connecting parts, the height of the weight drop, and the weight of the weight.

[0016] In one embodiment, fixing the first connector to the platform, connecting one end of the traction rope to the second connector, and connecting the other end of the traction rope to the weight includes: adjusting the position of the fixed pulley so that the traction rope located between the test piece and the fixed pulley is horizontal with the test piece.

[0017] In one embodiment, fixing the first connector to the platform, connecting one end of the traction rope to the second connector, and connecting the other end of the traction rope to the weight includes:

[0018] The first connector is fixed to the platform by the first fastener, and the traction rope is fixed to the test point of the second connector by the second fastener. The test point includes the side position and the corner position of the test piece.

[0019] Connect the traction rope to the second fixing member.

[0020] In one embodiment, the impact resistance test method is used to test a display module, the adhesive layer is a light-shielding adhesive, the first connector is a backlight assembly, and the second connector is a panel.

[0021] The impact resistance testing device provided by this invention includes a platform, a traction structure, and a drop structure. The platform is used to place the test piece, and a fixing component is provided on the platform to fix the test piece. The traction structure includes a fixed pulley, a weight, and a traction rope. One end of the traction rope is connected to the test piece, and the other end is connected to the weight. The drop structure is used to realize the drop of the weight. This impact resistance testing device can simulate the actual drop of a product, simulate the impact force that the product can withstand in an actual drop, and test the magnitude of the instantaneous impact force that the product can withstand. It simplifies existing testing equipment and improves testing efficiency.

[0022] The impact resistance testing method provided by this invention is used to test the instantaneous impact resistance of a test piece. The test piece includes a first connector and a second connector connected by an adhesive layer. The impact resistance testing method includes: fixing the first connector to a platform; connecting one end of a traction rope to the second connector; connecting the other end of the traction rope to a weight; subjecting the weight to free fall; and evaluating the impact force borne by the test piece at the lowest point of the fall based on the relative displacement between the first and second connectors, the fall height of the weight, and the weight of the weight. This impact resistance testing method can simulate the actual drop of a product, simulate the impact force that a product can withstand in an actual drop, and test the magnitude of the instantaneous impact force that a product can actually withstand. It simplifies existing testing equipment and improves testing efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the impact resistance testing device provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the impact resistance testing device provided in an embodiment of the present invention;

[0026] Figure 3 This is a flowchart illustrating the impact resistance testing method provided in an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the test piece provided in an embodiment of the present invention;

[0028] Figure 5 This is a diagram of test points in the front view of the test piece provided in an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, 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 necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0031] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "connection," "linking," "fixing," "installation," etc., should be interpreted broadly. For example, they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. It should be understood that the term "and / or" as used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.

[0034] The impact resistance testing device and method provided by the present invention will be described in detail below with reference to specific embodiments.

[0035] Figure 1 This is a schematic diagram of the impact resistance testing device provided in an embodiment of the present invention. Figure 2 Please refer to the structural schematic diagram of the impact resistance testing device provided in the embodiment of the present invention. Figure 1 , Figure 2 As shown, a first aspect of the present invention provides an impact resistance testing device, including a platform 1, a traction structure 2, and a drop structure 3;

[0036] The platform 1 is used to place the test piece 5. A fixing member 4 is provided on the platform 1 to fix the test piece 5. The traction structure 2 includes a fixed pulley 21, a weight 22 and a traction rope 23. One end of the traction rope 23 is used to connect the test piece 5 and the other end of the traction rope 23 is used to connect the weight 22. The drop structure 3 is used to realize the drop of the weight 22.

[0037] The platform 1 in this embodiment is used to place the test piece 5. The platform 1 in this embodiment has a flat surface 11 for placing the test piece. The specific form of the platform 1 in this embodiment is not particularly limited. The fixing member 4 is used to fix the test piece. The specific structure of the fixing member 4 in this embodiment is not particularly limited. An exemplary fixing member 4 can be an upper clamping member movably set on the platform.

[0038] The traction structure 2 in this embodiment includes a fixed pulley 21, a weight 22, and a traction rope 23. One end of the traction rope 23 is used to connect to the test piece 5, and the other end is used to connect to the weight 22. The weight 22 in this embodiment has various weight specifications. The fixed pulley 21 in this embodiment is used to change the direction of force on the test piece 5. In this embodiment, by changing the weight of the weight 22 or the drop height of the weight 22, an impact force value within a preset range can be obtained.

[0039] The drop structure 3 in this embodiment is used to realize the drop of the weight 22. This embodiment does not impose any special restrictions on the specific structure of the drop structure 3.

[0040] For example, after the first connector 52 on the upper part and the second connector 53 on the lower part of the adhesive layer 51 of the test piece 5 are subjected to an instantaneous impact, there will be a relative displacement between the first connector 52 and the second connector 53. The impact resistance testing device of this embodiment can simulate the actual drop of the test piece 5 and evaluate the impact force borne by the test piece 5 based on the relative displacement between the first connector 51 and the second connector 52, the drop height of the weight, and the weight of the weight.

[0041] The testing principle of the impact resistance testing device in this embodiment is as follows: Select a suitable weight 22 and drop height according to the design requirements, and fix the test piece 5 in place. One end of the weight 22 is connected to the traction rope 23 and placed on the drop structure 3. In this embodiment, the test piece includes a first connector 52 and a second connector 53 connected by an adhesive layer 51. The first connector 52 is fixed on the platform 1. One end of the traction rope 23 is connected to the second connector 53, and the other end is connected to the weight 22. The weight 22 falls under the action of the drop structure, undergoing free fall. At the moment the weight 22 hits the lowest point of the traction rope 23, a pulling force is generated on the test piece 5. During the fall, the weight 22 is mainly affected by gravity; air resistance is relatively small and is considered zero for ease of calculation. According to the law of conservation of energy, Ep = mgh = P = Ft, we can derive F = mgh / t (m: mass of the weight, g: gravitational acceleration, h: height of the weight falling, t: time for the weight to decelerate from its maximum speed to 0 after reaching the bottom). The weight 22 is subjected to a vertical pulling force F, which changes the direction of the force through the fixed pulley 21 and is equal to the horizontal pulling force F1 to the right of the test piece 5. (The frictional resistance of the fixed pulley and the rope has a small impact on the whole system and is ignored for the sake of calculation). The test time t is too short to be measured. Ft is regarded as a whole: Ep = mgh = Ft. The magnitude of Ep can indirectly reflect the difference in the resistance of the test piece 5 to instantaneous impact force.

[0042] The impact resistance testing device provided in this embodiment includes a platform, a traction structure, and a drop structure. The platform is used to place the test piece, and a fixing component is provided on the platform to fix the test piece. The traction structure includes a fixed pulley, a weight, and a traction rope. One end of the traction rope is connected to the test piece, and the other end is connected to the weight. The drop structure is used to realize the drop of the weight. This impact resistance testing device can simulate the actual drop of a product, simulate the impact force that the product can withstand in an actual drop, and test the magnitude of the instantaneous impact force that the product can actually withstand, simplifying existing testing equipment and improving testing efficiency.

[0043] In one embodiment, please refer to Figure 1 The impact resistance testing device also includes a support frame 6, on which both the fixed pulley 23 and the drop structure 3 are mounted. In this embodiment, the support frame 6 is used to mount the fixed pulley 23 and the drop structure 3, facilitating the overall movement of the fixed pulley 23 and the drop structure 3, as well as the preparation for the installation of the entire device.

[0044] In one specific embodiment, please refer to Figure 1The drop structure 3 includes a drive structure 31 and a support platform 32. The support platform 32 is used to place the weight 22, and the drive structure 31 is used to drive the support platform 32 to drop. In this embodiment, the drop structure 3 includes a drive structure 31 and a support platform 32. By setting the drive structure 31, the weight 22 can be automatically dropped, improving the testing efficiency of the test piece 5. For example, in this embodiment, the drive structure 31 is a telescopic cylinder, and the support platform 32 is located at the output end of the telescopic cylinder 31.

[0045] In one specific embodiment, the drive structure 31 is detachably connected to the support frame 6. A control switch 33 is provided on the support frame 6, which controls the opening and closing of the drive structure 31 to cause the support platform 32 to drop. This embodiment, by providing a control switch 33 on the support frame 6, facilitates operation by the operator and improves testing efficiency. The detachable connection between the drive structure 31 and the support frame 6 allows the drop structure 32 to be removed from the support frame 6 when the testing device is not in use, saving storage space.

[0046] In one specific embodiment, please refer to Figure 1 The heights of both the platform 1 and the support frame 6 are adjustable. For example, in the test-to-fail (TTF) test of the test piece 5, additional energy needs to be added by adjusting the test length of the traction rope 23 or the weight of the weight 22. In this embodiment, the heights of both the platform 1 and the support frame 6 are adjustable, which can meet the requirements of drop tests on the weight 22 from different heights.

[0047] In one specific embodiment, the height of the fixed pulley 21 on the support frame 6 is adjustable. This embodiment allows for rapid adjustment of the traction direction of the traction rope 23 under different testing conditions by adjusting the height of the fixed pulley 21 on the support frame 6. For example, after adjusting the height of the platform 1, the height of the fixed pulley 21 needs to be adjusted accordingly so that the traction rope 23 between the test piece 5 and the fixed pulley 21 is horizontal with the test piece 5. In this embodiment, the adjustable height of the fixed pulley 21 on the support frame 6 allows for rapid horizontal alignment of the traction rope 23 between the test piece 5 and the fixed pulley 21 with the test piece 5, improving testing efficiency.

[0048] The impact resistance testing device of this invention can simulate the actual drop of a product, simulate the impact force that the product can withstand in an actual drop, and test the magnitude of the instantaneous impact force that the product can withstand, thus simplifying existing testing equipment and improving testing efficiency.

[0049] Figure 3 Please refer to the flowchart of the impact resistance testing method provided in the embodiments of the present invention. Figure 1-3A second aspect of the present invention provides an impact resistance testing method for testing the instantaneous impact resistance of a test piece 5. The test piece 5 includes a first connector 52 and a second connector 53 connected by an adhesive layer 51. The impact resistance testing method employs the impact resistance testing device described in the above embodiment. The method comprises:

[0050] S101. Fix the first connector to the platform, connect one end of the traction rope to the second connector, and connect the other end of the traction rope to the weight.

[0051] Specifically, in this embodiment, the first connecting member 52 can be fixed to the platform 1 by a fixing block or a clamping member. This embodiment does not impose any particular restrictions on the connection method between the second connecting member 53 and the traction rope 23. For example, the second connecting member 53 can be connected to the traction rope 23 by a fixing member provided on the second connecting member 53. A suitable weight 22 and drop height are selected according to design requirements. In this embodiment, the drop height is the height of the weight 22 at its lowest point on the support platform 32.

[0052] S102. Allow the weight to fall freely;

[0053] Specifically, the drop structure in this embodiment includes a drive structure 31 and a support platform 32. The support platform 32 is used to place the weight, and the drive structure 31 is used to drive the support platform 32 to drop. In this embodiment, the free fall of the weight 22 can be completed simply by operating the drive structure 31 to make the support platform 32 drop.

[0054] S103. When the weight falls to its lowest point, the impact force borne by the test piece is judged by the relative displacement between the first connector and the second connector, the height of the weight fall, and the weight of the weight.

[0055] Specifically, the principle for evaluating the impact force borne by the test piece 5 is as follows: During the fall, the weight 22 is mainly subjected to gravity, and the air resistance is relatively small, so it is considered zero for ease of calculation. According to the law of conservation of energy, Ep = mgh = P = Ft, we can derive F = mgh / t, where m is the mass of the weight 22, g is the acceleration due to gravity, h is the fall height of the weight 22, and t is the time it takes for the weight 22 to decelerate from its maximum speed to 0 when it reaches the bottom. The weight 22 is subjected to a vertical pulling force F, which changes the direction of the force through the fixed pulley 21 and is equal to the horizontal pulling force F1 to the right of the test piece 5. The frictional resistance of the fixed pulley 21 and the rope traction rope 23 has a small impact on the whole system and is ignored for ease of calculation. The test time t is too short to be measured, so Ft is regarded as a whole: Ep = mgh = Ft. The magnitude of Ep can indirectly reflect the difference in the magnitude of the instantaneous impact force resisted by the test piece 5.

[0056] Furthermore, fixing the first connector 52 to the platform 1, connecting one end of the traction rope 23 to the second connector 53, and connecting the other end of the traction rope 23 to the weight 22 includes adjusting the position of the fixed pulley 21 so that the traction rope 23 located between the traction rope 23 and the fixed pulley 21 is horizontal with the test piece 5. In this embodiment, the horizontal alignment of the traction rope 23 between the traction rope 23 and the fixed pulley 21 with the test piece 5 during testing ensures the accuracy of the test results.

[0057] Preferably, the steps of fixing the first connector 52 to the platform 1, connecting one end of the traction rope 23 to the second connector 53, and connecting the other end of the traction rope 23 to the weight 22 include:

[0058] The first connector 52 is fixed to the platform 1 by the first fastener, and the traction rope 23 is fixed to the test point of the second connector 53 by the second fastener.

[0059] Connect the traction rope 23 to the second fixing member.

[0060] In this embodiment, the traction rope 23 is connected to the second fastener fixed on the second connector 53, which facilitates the connection between the traction rope 23 and the second connector 53 and improves the testing efficiency.

[0061] Furthermore, the test points include the side and corner positions of the test piece 5. This embodiment simulates the scenario of the test piece 5 falling to its side or corner by testing the side and corner positions of the test piece 5.

[0062] Figure 4 This is a schematic diagram of the cross-sectional structure of the test piece provided in an embodiment of the present invention. Figure 5 For a diagram of the test points in the front view of the test piece provided in this embodiment of the invention, please refer to [link / reference needed]. Figure 1-5 The following description uses the impact resistance test method of this embodiment as an example to illustrate the bonding effect between the light-shielding adhesive 7 and the panel 8 on the backlight assembly in an LCD display module. For example, the test conditions are based on the whole machine weighing 0.2kg, meeting the requirement of a 1m drop, with an instantaneous impulse of p = mgh = 2J. During the test, the whole machine needs to be dropped from six sides and four corners respectively.

[0063] In this embodiment, a 1kg weight 22 can be placed on the support platform 32. The test length of the traction rope 23 (the distance from the support platform to the lowest point of the weight) is set to 20cm. (The panel 8 can be fixed on the platform 1, and the backlight frame or iron frame connected to the light-shielding adhesive 7 can be fixedly connected to the traction rope 23, or the panel 8 can be fixed on the traction rope 23, and the backlight frame or iron frame connected to the light-shielding adhesive 7 can be fixed on the platform 1.) Adjust the traction rope 23 between the fixed pulley 21 and the backlight assembly to be horizontal with the backlight assembly. Turn on the switch, and the weight 22 will perform a 20cm free fall. The impulse will be transferred to the test point of the backlight assembly (i.e., the position where the traction rope 23 is fixed to the test piece, which can be the side position or the corner position). Measure the displacement of the backlight assembly and the panel 8 at the corresponding position of the backlight assembly test point to confirm whether the adhesion between the light-shielding adhesive 7 and the back panel 8 of the backlight assembly meets the standard. The TTF test of the whole machine can continue. During the test, energy can be added by adjusting the test length of the traction rope 23 or the weight of the weight 22.

[0064] LCD display modules require a backlight assembly to provide backlight to the panel. The backlight assembly connects the backlight and the panel 8 via a light-shielding adhesive 7. Reliability testing specifications for LCD display modules include drop reliability requirements. During drops, backlight displacement accounts for a high percentage of defects, such as light leakage. The adhesion of the light-shielding adhesive 7 directly affects this displacement. This impact resistance test method can accurately measure the impact resistance of the light-shielding adhesive 7 in the backlight assembly, confirming whether its adhesion meets standards. This test method also provides energy efficiency simulation to demonstrate the magnitude of the instantaneous impact force the product can withstand, simulating the impact force the product can withstand in actual drops, thus solving the problem of backlight component displacement during drops in mobile phones.

[0065] The impact resistance testing method of this embodiment is used to test the instantaneous impact resistance of a test piece. The test piece includes a first connector and a second connector connected by an adhesive layer. The impact resistance testing method includes: fixing the first connector to a platform; connecting one end of a traction rope to the second connector; connecting the other end of the traction rope to a weight; subjecting the weight to free fall; and evaluating the impact force borne by the test piece at the lowest point of the fall based on the relative displacement between the first and second connectors, the fall height of the weight, and the weight of the weight. This impact resistance testing method can simulate the actual drop of a product, simulate the impact force that a product can withstand in an actual drop, and test the magnitude of the instantaneous impact force that a product can actually withstand. It simplifies existing testing equipment and improves testing efficiency.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for testing impact resistance, used to test the resistance of a display module to instantaneous impact, the display module comprising a backlight assembly and a panel connected by a light-shielding adhesive, the method employing an impact resistance testing device, characterized in that... The impact resistance testing device includes a platform, a traction structure, a drop structure, and a support frame; the traction structure includes a fixed pulley, a weight, and a traction rope, the fixed pulley being mounted on the support frame to convert the vertical impact force generated by the weight falling into a horizontal tensile force acting on the panel; The drop structure is mounted on the support frame to enable the weight to fall vertically in free fall; the method includes: The backlight assembly is fixed on the platform, one end of the traction rope is connected to the test point of the panel, and the other end of the traction rope is connected to the weight. The test point includes the side position and the corner position of the panel to simulate the situation where the display module falls to the side or corner; the weight is subjected to free fall. When the weight falls to its lowest point, the impact force borne by the display module is evaluated based on the relative displacement between the backlight assembly and the panel, the height of the weight's fall, and the weight of the weight. The impact force satisfies the following relationship: Ft=mgh; where mg is the weight of the weight; h is the drop height of the weight; and t is the time it takes for the weight to decelerate from its maximum speed to 0 when it reaches its lowest point during the test. Ft is used as a whole to evaluate the impact force that the display module can withstand.

2. The impact resistance testing method according to claim 1, characterized in that, Fixing the backlight assembly on the platform, connecting one end of the traction rope to the test point of the panel, and connecting the other end of the traction rope to the weight includes: adjusting the position of the fixed pulley so that the traction rope located between the display module and the fixed pulley is horizontal with the display module.

3. The impact resistance testing method according to claim 2, characterized in that: Fixing the backlight assembly to the platform, connecting one end of the traction rope to the test point on the panel, and connecting the other end of the traction rope to the weight includes: The backlight assembly is fixed to the platform by the first fastener, and the traction rope is fixed to the test point on the panel by the second fastener. The test point is the side or corner position of the display module. Connect the traction rope to the second fixing member.

4. The impact resistance testing method according to claim 1, characterized in that: The drop structure includes a drive structure and a support platform. The support platform is used to place the weight, and the drive structure is used to drive the support platform to drop.

5. The impact resistance testing method according to claim 4, characterized in that: The support platform is detachably connected to the drive structure. A control switch is provided on the support frame. The control switch is used to control the opening and closing of the drive structure so that the support platform falls.

6. The impact resistance testing method according to claim 1, characterized in that: The heights of both the shelf and the support frame are adjustable.

7. The impact resistance testing method according to claim 1, characterized in that: The height of the fixed pulley on the support frame is adjustable.

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