A drop test device

Abstract

This utility model belongs to the field of drop testing technology and discloses a drop testing device. The drop testing device includes a support assembly, a lifting device, and two symmetrically arranged drop devices. The lifting device is installed on the support assembly to enable the two drop devices to rise and fall synchronously. Each drop device includes a connecting frame, a release component, and a support plate. The connecting frame is connected to the output end of the lifting device, and the support plate is rotatably connected to the connecting frame and to the output end of the release component. The release component is installed on the connecting frame, and its output end can reciprocate vertically. When the output ends of the two release components are at a first height position, the two support plates are horizontal and together form a supporting plane to support the test piece. When the output ends of the two release components reach a second height position, the two support plates rotate around the connecting frame on the corresponding side to form an opening, allowing the test piece to fall freely, ensuring the consistency of the drop height of the test piece and improving the accuracy and repeatability of the test results.

Description

Technical Field

[0001] This utility model relates to the field of drop testing technology, and in particular to a drop testing device. Background Technology

[0002] In the flexible packaging manufacturing industry, finished packaging bags must undergo rigorous drop tests to verify their impact resistance and sealing performance. Currently, the commonly used manual drop testing method has significant operational inconsistencies and occupational health hazards. While existing mechanical drop testing equipment has replaced manual operation to some extent, the inherent defects of its pin-type mechanical structure lead to a time lag in the release of the support plate. This causes the test piece to slide against the support surface during the initial drop phase, preventing true free fall and affecting test accuracy and repeatability. This sliding phenomenon not only causes the actual drop height to deviate from the preset value but may also distort test results due to non-vertical drops. Utility Model Content

[0003] The purpose of this invention is to provide a drop testing device to solve the problems of inaccurate height control and release delay causing the test piece to slip in existing drop tests, thereby improving the accuracy and repeatability of test results.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A drop test device includes a support assembly, a lifting device, and two symmetrically arranged drop devices. The lifting device is fixedly installed on the support assembly and is used to synchronously raise and lower the two drop devices in the vertical direction.

[0006] Both of the drop devices include a connecting frame, a release assembly, and a support plate. The connecting frame is fixedly connected to the output end of the lifting device. The support plate is rotatably connected to the connecting frame and rotatably connected to the output end of the release assembly. The release assembly is fixedly installed on the connecting frame, and the output end of the release assembly can reciprocate in the vertical direction.

[0007] When the output ends of the two release components are at the first height position, the two support plates are horizontal and together form a support plane to support the test piece; when the output ends of the two release components reach the second height position, the two support plates rotate around the connecting frame on the corresponding side to form an opening, allowing the test piece to fall freely.

[0008] As an alternative to drop test equipment, the release assembly includes a drive cylinder and a connector. The drive cylinder extends vertically, and its cylinder barrel is fixedly connected to the connector. The cylinder rod of the drive cylinder passes through the connector and is rotatably connected to the first end of the connector. The second end of the connector is rotatably connected to the support plate.

[0009] As an optional solution for drop testing equipment, the drop device also includes a rotating shaft, a first bearing assembly, and a second bearing assembly. The two ends of the connecting frame are rotatably connected to the rotating shaft through the first bearing assembly, and the two ends of the support plate are rotatably connected to the rotating shaft through the second bearing assembly.

[0010] As an alternative to drop test equipment, the support plate has a connecting part on the side away from the bearing surface, the connector is rotatably connected to the connecting part, and the rotating shaft passes through the connecting part.

[0011] As an optional solution for drop testing equipment, when the output ends of both release components are at the first height position, the bearing surfaces of the two support plates are at the same horizontal plane, together forming a complete support plane for the test piece.

[0012] As an alternative to drop test equipment, the lifting device includes a drive component, a first synchronous belt assembly, and a first lead screw and nut assembly. The drive component is fixedly connected to the bracket assembly. The drive component drives the first lead screw and nut assembly to move through the first synchronous belt assembly. The first nut of the first lead screw and nut assembly is fixedly connected to one of the connecting frames.

[0013] As an optional solution for drop testing equipment, the lifting device also includes a second synchronous belt assembly and a second lead screw and nut assembly. The first lead screw of the first lead screw and nut assembly is connected to the drive member through the first synchronous belt assembly, and the second lead screw of the second lead screw and nut assembly is driven to rotate synchronously through the second synchronous belt assembly. The second nut of the second lead screw and nut assembly is fixedly connected to another connecting frame.

[0014] As an alternative to drop testing equipment, the drop device also includes a guide assembly comprising a guide rail and a slider. The guide rail is fixedly connected to the support assembly and extends vertically, and the slider is fixedly connected to the connecting frame and slidably connected to the guide rail.

[0015] As an optional solution for drop testing equipment, the drop testing equipment also includes a receiving box, which is located below the drop device and in contact with the ground to receive the test piece when it falls.

[0016] As an alternative to the drop testing equipment, the drop testing equipment also includes an operating platform, which includes a control panel that is electrically connected to the lifting device and the release assembly.

[0017] Beneficial effects:

[0018] This invention provides a drop testing device that, through the coordinated operation of a lifting device and a drop mechanism, can precisely adjust the drop height of the test piece and achieve reliable free-fall testing. The symmetrically arranged connecting frame, in conjunction with the liftable release assembly, ensures that the two support plates form a stable horizontal bearing surface in the supported state, while simultaneously rotating to create an opening in the released state. This ensures the test piece falls vertically and freely, avoiding skewness or jamming problems caused by unilateral release during testing. This simple and reasonable structural design achieves precise control of the drop action through mechanical linkage, guaranteeing both test repeatability and reliability while facilitating operation and maintenance. Attached Figure Description

[0019] Figure 1 This is a first schematic diagram of the drop test device provided in this embodiment of the present invention;

[0020] Figure 2 This is a second schematic diagram of the drop test device provided in this embodiment of the present invention;

[0021] Figure 3 This is a third schematic diagram of the drop test device provided in this embodiment of the present invention;

[0022] Figure 4 This is a first schematic diagram of the drop device provided in this embodiment of the utility model;

[0023] Figure 5 This is a second schematic diagram of the drop device provided in this embodiment of the present invention.

[0024] In the picture:

[0025] 100. Test piece;

[0026] 1. Support assembly; 11. Column; 12. Cover plate;

[0027] 2. Lifting device; 21. Drive component; 22. First synchronous belt assembly; 23. First lead screw and nut assembly; 24. Second synchronous belt assembly; 25. Second lead screw and nut assembly; 231. First lead screw; 232. First nut;

[0028] 3. Drop device; 31. Connecting frame; 32. Release assembly; 33. Support plate; 34. Rotating shaft; 35. First bearing assembly; 36. Second bearing assembly; 37. Guide assembly; 321. Drive cylinder; 322. Connecting piece; 331. Connecting part; 371. Guide rail; 372. Slider;

[0029] 4. Receiving box;

[0030] 5. Operating platform; 51. Control panel. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This embodiment provides a drop testing device, such as... Figures 1-5As shown, the drop test equipment includes a support assembly 1, a lifting device 2, and two symmetrically arranged drop devices 3. The lifting device 2 is fixedly installed on the support assembly 1 and is used to synchronously raise and lower the two drop devices 3 in the vertical direction. Each drop device 3 includes a connecting frame 31, a release component 32, and a support plate 33. The connecting frame 31 is fixedly connected to the output end of the lifting device 2, and the support plate 33 is rotatably connected to the connecting frame 31 and rotatably connected to the output end of the release component 32. The release component 32 is fixedly installed on the connecting frame 31, and the output end of the release component 32 can reciprocate in the vertical direction. When the output ends of the two release components 32 are at the first height position, the two support plates 33 are horizontal and together form a support plane to support the test piece 100. When the output ends of the two release components 32 reach the second height position, the two support plates 33 rotate around the connecting frame 31 on the corresponding side to form an opening, allowing the test piece 100 to fall freely.

[0036] Through the coordinated operation of the lifting device 2 and the drop device 3, the drop height of the test piece 100 can be precisely adjusted, achieving a reliable free-fall test. The symmetrically arranged connecting frame 31, in conjunction with the liftable release component 32, ensures that the two support plates 33 form a stable horizontal bearing surface in the supported state, and rotate synchronously to create an opening in the released state, guaranteeing a vertical free fall of the test piece 100 and avoiding tilting or jamming problems caused by unilateral release during the test. This structural design is simple and reasonable, achieving precise control of the drop action through mechanical linkage, ensuring both test repeatability and reliability, and facilitating operation and maintenance.

[0037] In this embodiment, the maximum mass of the test piece 100 that the drop test equipment can withstand is 30 kg, the dimensions of the support plate 33 are 1000 × 800 mm, and the test height range of the drop test equipment is 650-1200 mm. Figure 1 As shown, the support assembly 1 includes multiple columns 11 and multiple cover plates 12. The multiple columns 11 are fixedly connected to the frame structure of the support assembly 1, providing a solid support foundation for the entire drop test device 3. The cover plates 12 can cover the sides or top of the frame structure, which on the one hand protects the internal lifting device 2, preventing external dust and debris from entering and affecting the operation of the equipment, and also prevents operators from accidentally contacting moving parts and causing safety hazards; on the other hand, the cover plates 12 make the appearance of the support assembly 1 more regular and reduce noise leakage during the operation of the drop test equipment.

[0038] like Figure 4 and Figure 5As shown, the release assembly 32 includes a drive cylinder 321 and a connector 322. The drive cylinder 321 extends vertically, and its cylinder barrel is fixedly connected to the connecting frame 31. The cylinder rod of the drive cylinder 321 passes through the connecting frame 31 and is rotatably connected to the first end of the connector 322. The second end of the connector 322 is rotatably connected to the support plate 33. The release assembly 32 adopts a combination structure of the drive cylinder 321 and the connector 322, which can achieve precise and rapid control of the support plate 33. When the drive cylinder 321 extends or retracts vertically, the cylinder rod drives the support plate 33 to rotate around the rotation point through the connector 322. When the cylinder rod extends, the support plate 33 remains horizontal to stably support the test piece 100. When the cylinder rod retracts, the support plate 33 quickly rotates downward, instantly releasing the test piece 100 and ensuring that the test piece 100 falls freely without external interference. This avoids the lag and force deviation of manual release, making the timing and posture of the test piece 100 release more consistent and reducing test errors caused by unstable release actions. Simultaneously, the stable power output of the drive cylinder 321 can adapt to test pieces 100 of different weights, ensuring consistency in the release process and further improving the repeatability and data reliability of the drop test. In this embodiment, the drive cylinder 321 is a hydraulic cylinder or an electric cylinder.

[0039] It is worth noting that the first height position and the second height position are two key positioning points formed by the end of the release component 32's output terminal in the motion trajectory. The first height position corresponds to the state where the cylinder rod of the drive cylinder 321 is fully extended, at which time the support plate 33 remains horizontal and is in the working position of supporting the test piece 100; the second height position corresponds to the state where the cylinder rod is fully retracted, at which time the support plate 33 flips to the lowest position and is in the reset position after releasing the test piece 100.

[0040] In this embodiment, the connector 322 is a columnar connecting rod, with its two ends rotatably connected to the cylinder rod and the support plate 33, respectively. This allows for flexible angle adjustment to offset displacement deviations during component movement as the drive cylinder 321 extends and retracts, causing the support plate 33 to flip. This avoids motion trajectory conflicts caused by rigid connections, effectively preventing jamming. This rotatable connection creates a smooth transition between the linear extension / retraction of the cylinder rod and the flipping motion of the support plate 33. Regardless of changes in the extension / retraction speed of the drive cylinder 321 or the flipping angle of the support plate 33, the adaptive rotation of the connector 322 adapts to the motion relationship between the two, ensuring continuous and smooth release.

[0041] like Figure 5As shown, the drop device 3 also includes a rotating shaft 34, a first bearing assembly 35, and a second bearing assembly 36. Both ends of the connecting frame 31 are rotatably connected to the rotating shaft 34 via the first bearing assembly 35, and both ends of the support plate 33 are rotatably connected to the rotating shaft 34 via the second bearing assembly 36. The rotatable connection between the connecting frame 31 and the support plate 33 via the rotating shaft 34, the first bearing assembly 35, and the second bearing assembly 36 significantly reduces frictional resistance during relative rotation, making the flipping action of the support plate 33 smoother and more stable, avoiding jamming or sticking. The placement of the first bearing assembly 35 and the second bearing assembly 36 precisely limits the position of the rotating shaft 34, ensuring that the support plate 33 always moves around a fixed axis during flipping, preventing the test piece 100 from shifting due to shaking, and ensuring the stability of the test piece 100's posture before release. Simultaneously, the first bearing assembly 35 and the second bearing assembly 36 distribute the force during rotation, reducing component wear, extending the device's service life, and lowering maintenance costs.

[0042] In this embodiment, two second bearing assemblies 36 and two first bearing assemblies 35 are symmetrically arranged at both ends of the rotating shaft 34, with the two second bearing assemblies 36 located between the two first bearing assemblies 35. This arrangement allows the rotating shaft 34 to be subjected to more balanced forces, avoiding bending of the shaft body or accelerated wear of the first bearing assemblies 35 and second bearing assemblies 36 due to concentrated forces on one side, thus ensuring the stability of the rotation of the rotating shaft 34.

[0043] like Figure 5 As shown, a connecting portion 331 is provided on the side of the support plate 33 facing away from the bearing surface. A connecting piece 322 is rotatably connected to the connecting portion 331, and a rotating shaft 34 passes through the connecting portion 331. The presence of the connecting portion 331 on the side of the support plate 33 facing away from the bearing surface, along with the rotatable connection between the connecting piece 322 and the connecting portion 331 and the passage of the rotating shaft 34 through the connecting portion 331, allows the force on the support plate 33 to be more concentrated on the connecting portion 331, making the torque transmission during rotation more direct. This structure allows the driving force of the connecting piece 322 to be precisely applied to the support plate 33 through the connecting portion 331. Combined with the rotational support of the rotating shaft 34, this makes the trajectory of the support plate 33 more stable during rotation, avoiding swaying or displacement caused by dispersed force points. Simultaneously, the passage of the rotating shaft 34 through the connecting portion 331 further enhances the fitting precision between the connecting portion 331 and the rotating shaft 34, ensuring that the support plate 33 always rotates around the rotating shaft 34, guaranteeing the consistency of the posture of the test piece 100 when released, and reducing experimental errors.

[0044] like Figure 1 and Figure 2As shown, when the output ends of both release components 32 are at the first height position, the bearing surfaces of the two support plates 33 are on the same horizontal plane, together forming a complete support plane for the test piece 100. This stably supports the test piece 100, ensuring that it is placed stably and subjected to uniform force, avoiding tilting or premature displacement of the test piece 100 due to uneven bearing surfaces. This ensures that the test piece 100 is in a uniform initial posture before falling, eliminating experimental variable interference caused by differences in support. When the release components 32 act synchronously, the two support plates 33 can simultaneously detach from the test piece 100, ensuring that the test piece 100 is not tilted in the horizontal direction and falls freely under the action of gravity, further improving the consistency of test conditions, making the comparison between different tests more scientific, and the test results more reliable.

[0045] like Figure 2 As shown, the lifting device 2 includes a drive component 21, a first synchronous belt assembly 22, and a first lead screw and nut assembly 23. The drive component 21 is fixedly connected to the support assembly 1. The drive component 21 drives the first lead screw and nut assembly 23 to move through the first synchronous belt assembly 22. The first nut 232 of the first lead screw and nut assembly 23 is fixedly connected to one of the connecting frames 31. The lifting device 2 adopts a combined structure of the drive component 21, the first synchronous belt assembly 22, and the first lead screw and nut assembly 23, which can provide stable and precise power output for the lifting of the connecting frame 31. The drive component 21 transmits power through the first synchronous belt assembly 22, which is smooth and has a precise transmission ratio, reducing losses and errors in the power transmission process. Combined with the motion conversion of the first lead screw and nut assembly 23, the rotational motion can be efficiently converted into the linear lifting motion of the connecting frame 31, realizing precise control of the height of the test piece 100.

[0046] like Figure 2 and Figure 3As shown, the first lead screw and nut assembly 23 includes a first lead screw 231 and a first nut 232, and the first synchronous belt assembly 22 includes two first pulleys and a first synchronous belt. The drive member 21 is fixedly mounted on the top of the bracket assembly 1. The first lead screw 231 extends vertically, and its two ends are rotatably connected to the bracket assembly 1 via bearings. The output shaft of the drive member 21 is fixedly connected to one of the first pulleys, which is then connected to the other first pulley via the first synchronous belt. The other first pulley is fixedly fitted onto the top of the first lead screw 231, forming a power transmission path from the drive member 21 to the first lead screw 231. When the drive member 21 is activated, its output shaft drives the connected first pulley to rotate. Through the transmission of the first synchronous belt, the other first pulley rotates accordingly, thereby driving the first lead screw 231 to rotate around its own axis. Since the first nut 232 is threadedly connected to the first lead screw 231 and fixed to one of the connecting frames 31, when the first lead screw 231 rotates, the first nut 232 moves linearly along the vertical direction of the first lead screw 231, thereby driving the connecting frame 31 to rise and fall synchronously. This connection structure, through the cooperation of the first pulley and the first synchronous belt, realizes the stable transmission of power from the drive component 21 to the first lead screw 231. At the same time, with the threaded cooperation between the first lead screw 231 and the first nut 232, the rotational motion is accurately converted into the linear rising and falling motion of the connecting frame 31, providing a reliable structural basis for the height adjustment of the test piece 100.

[0047] like Figure 2 As shown, the lifting device 2 also includes a second synchronous belt assembly 24 and a second lead screw and nut assembly 25. The first lead screw 231 of the first lead screw and nut assembly 23 is connected to the drive member 21 through the first synchronous belt assembly 22, and drives the second lead screw of the second lead screw and nut assembly 25 to rotate synchronously through the second synchronous belt assembly 24. The second nut of the second lead screw and nut assembly 25 is fixedly connected to another connecting frame 31. After the lifting device 2 adds the second synchronous belt assembly 24 and the second lead screw and nut assembly 25, the first lead screw 231 drives the second lead screw to rotate synchronously, which can keep the two connecting frames 31 synchronized during the lifting process. On the one hand, the synchronous movement of the connecting frames 31 on both sides can stably support the test piece 100, preventing it from falling off prematurely or shifting position due to uneven force during the lifting and lowering phase, thus ensuring the consistency of the test piece 100's posture before the drop. On the other hand, the synchronous drive of the dual lead screws improves the height adjustment accuracy. Combined with the precise transmission of the drive component 21 and the synchronous belt, it ensures that the drop height of the test piece 100 is completely uniform in each test, reducing test deviations caused by mechanical errors and making the drop test results more repeatable and reliable. In this embodiment, the drive component 21 is an electric motor or a hydraulic motor.

[0048] like Figure 2 and Figure 3As shown, the second synchronous belt assembly 24 includes two second pulleys and a second synchronous belt, and the second lead screw and nut assembly 25 includes a second lead screw and a second nut. One of the second pulleys is fixedly sleeved on the top of the first lead screw 231, forming a coaxial linkage with the first pulley in the first synchronous belt assembly 22; the other second pulley is fixedly sleeved on the top of the second lead screw, and the two second pulleys are connected by a second synchronous belt. The second lead screw also extends vertically, and its two ends are rotatably connected to the bracket assembly 1 through bearings. The second nut is threadedly connected to the second lead screw and fixed to another connecting frame 31. When the first lead screw 231 rotates under the action of the driving member 21, the second pulley at the top rotates accordingly, driving the pulley at the top of the second lead screw to rotate synchronously through the second synchronous belt, thereby making the second lead screw and the first lead screw 231 rotate at the same speed and in the same direction. At this time, the second nut moves linearly in the vertical direction with the rotation of the second lead screw, driving the connected connecting frame 31 to rise and fall synchronously, ultimately achieving complete synchronous movement of the two connecting frames 31 under the drive of the driving member 21.

[0049] In this embodiment, the second synchronous belt assembly 24 also includes multiple guide wheels. Since it is necessary to transmit power along the structural path of the support assembly 1 without interfering with the test space, the multiple guide wheels in the second synchronous belt assembly 24 can be flexibly arranged in appropriate positions according to the structural layout of the support assembly 1. By changing the transmission path of the second synchronous belt, the second synchronous belt can transmit power along the frame structure (such as the column 11) of the support assembly 1, thereby avoiding the core area of ​​the test space, that is, the vertical path of the test piece 100 falling.

[0050] It is worth noting that both the first synchronous belt assembly 22 and the second synchronous belt assembly 24 are equipped with tensioning pulleys, which can effectively ensure that the first and second synchronous belts are always in a proper tension state, avoiding problems such as slippage, tooth skipping, or transmission lag caused by belt slack during transmission. This ensures that the power of the drive component 21 can be stably and accurately transmitted to the first lead screw 231 and the second lead screw, keeping the rotation of the two lead screws highly synchronized, thereby ensuring the consistency of the lifting and lowering of the connecting frames 31 on both sides, and providing a stable lifting and lowering trajectory for the test piece 100.

[0051] like Figures 1-3 As shown, the drop device 3 also includes a guide assembly 37, which includes a guide rail 371 and a slider 372. The guide rail 371 is fixedly connected to the support assembly 1 and extends vertically. The slider 372 is fixedly connected to the connecting frame 31 and slidably connected to the guide rail 371. The guide assembly 37 provides stable vertical guidance for the lifting and lowering of the connecting frame 31, ensuring that the connecting frame 31 drives the test piece 100 to move smoothly along a fixed trajectory, avoiding deviation, swaying, or tilting during the lifting and lowering process.

[0052] In this embodiment, the drop device 3 includes two guide components 37, which are symmetrically arranged on both sides of the connecting frame 31. They provide balanced support and constraint to the connecting frame 31 from both sides, further enhancing the stability of the lifting process. This effectively counteracts the tilting or swaying of the connecting frame 31 that may be caused by the shift of the center of gravity, avoids the jamming or offset problems that may occur with unilateral guidance, and ensures that the posture of the test piece 100 remains consistent at the moment of lifting and releasing. This makes the initial conditions of each drop more uniform and improves the reliability and repeatability of the test results.

[0053] like Figure 1 and Figure 2 As shown, the drop test equipment also includes a receiving box 4, which is located below the drop device 3 and abuts against the ground to catch the test piece 100 during the drop. The receiving box 4 prevents secondary damage to the test piece 100 after it falls onto the ground or other hard surfaces, thus ensuring the accuracy of the test results. It reflects only the damage to the test piece 100 under the preset drop conditions, rather than additional damage caused by subsequent contact with other objects. Simultaneously, the receiving box 4 provides a buffer or restraint for the falling test piece 100, facilitating rapid collection after the test and reducing the possibility of scattering or loss. This is particularly suitable for small, fragile, or multi-part test pieces 100, ensuring the orderliness of the test process and the traceability of the test piece 100. Furthermore, for test pieces 100 that may generate fragments or leak liquid during the drop, the receiving box 4 also provides some protection, preventing pollution of the test environment or potential risks to operators.

[0054] In this embodiment, the receiving box 4 is rectangular with an open top, which facilitates the catching of dropped test pieces 100 and reduces catching errors caused by positional deviations; it also facilitates observation of the status of the test pieces 100 and their placement and removal, and is compatible with test pieces 100 of different sizes and shapes, making the test smoother.

[0055] like Figure 1 As shown, the drop test equipment also includes an operating platform 5, which includes a control panel 51. The control panel 51 is electrically connected to the lifting device 2 and the release component 32. The control panel 51, electrically connected to the lifting device 2, allows for precise electronic control of the drop height of the test piece 100, ensuring consistent height parameters for each test, reducing errors from manual adjustments, and guaranteeing uniformity of test conditions. The control panel 51, electrically connected to the release component 32, enables automated control of the release of the test piece 100, avoiding uneven force or timing deviations that may occur with manual release, resulting in a more stable initial state of the test piece 100 during drop. This not only improves the efficiency of drop testing by eliminating the need for repeated manual height adjustments and release of the test piece 100, but also reduces interference factors during the test process through precise control, making the test results more reliable.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A drop test device, characterized in that, It includes a support assembly (1), a lifting device (2) and two symmetrically arranged drop devices (3). The lifting device (2) is fixedly installed on the support assembly (1) and is used to make the two drop devices (3) rise and fall synchronously in the vertical direction. Both of the aforementioned drop devices (3) include a connecting frame (31), a release component (32), and a support plate (33). The connecting frame (31) is fixedly connected to the output end of the lifting device (2). The support plate (33) is rotatably connected to the connecting frame (31) and rotatably connected to the output end of the release component (32). The release component (32) is fixedly installed on the connecting frame (31). The output end of the release component (32) can reciprocate in the vertical direction. When the output ends of the two release components (32) are at the first height position, the two support plates (33) are in a horizontal state and together form a support plane to support the test piece (100); when the output ends of the two release components (32) reach the second height position, the two support plates (33) rotate around the connecting frame (31) on the corresponding side to form an opening, allowing the test piece (100) to fall freely.

2. The drop test device according to claim 1, characterized in that, The release assembly (32) includes a drive cylinder (321) and a connector (322). The drive cylinder (321) extends vertically. The cylinder barrel of the drive cylinder (321) is fixedly connected to the connecting frame (31). The cylinder rod of the drive cylinder (321) passes through the connecting frame (31) and is rotatably connected to the first end of the connector (322). The second end of the connector (322) is rotatably connected to the support plate (33).

3. The drop test device according to claim 2, characterized in that, The drop device (3) further includes a rotating shaft (34), a first bearing assembly (35) and a second bearing assembly (36). The two ends of the connecting frame (31) are rotatably connected to the rotating shaft (34) through the first bearing assembly (35), and the two ends of the support plate (33) are rotatably connected to the rotating shaft (34) through the second bearing assembly (36).

4. The drop test device according to claim 3, characterized in that, The support plate (33) has a connecting part (331) on the side away from the bearing surface. The connecting piece (322) is rotatably connected to the connecting part (331), and the rotating shaft (34) passes through the connecting part (331).

5. The drop test device according to claim 1, characterized in that, When the output ends of both release components (32) are at the first height position, the bearing surfaces of the two support plates (33) are at the same horizontal plane, together forming a complete support plane for the test piece (100).

6. The drop test device according to claim 1, characterized in that, The lifting device (2) includes a drive component (21), a first synchronous belt assembly (22), and a first lead screw nut assembly (23). The drive component (21) is fixedly connected to the bracket assembly (1). The drive component (21) drives the first lead screw nut assembly (23) to move through the first synchronous belt assembly (22). The first nut (232) of the first lead screw nut assembly (23) is fixedly connected to one of the connecting frames (31).

7. The drop test device according to claim 6, characterized in that, The lifting device (2) further includes a second synchronous belt assembly (24) and a second lead screw and nut assembly (25). The first lead screw (231) of the first lead screw and nut assembly (23) is connected to the drive member (21) through the first synchronous belt assembly (22), and drives the second lead screw of the second lead screw and nut assembly (25) to rotate synchronously through the second synchronous belt assembly (24). The second nut of the second lead screw and nut assembly (25) is fixedly connected to another connecting frame (31).

8. The drop test apparatus according to any one of claims 1-7, characterized in that, The drop device (3) further includes a guide assembly (37), which includes a guide rail (371) and a slider (372). The guide rail (371) is fixedly connected to the support assembly (1) and extends in the vertical direction. The slider (372) is fixedly connected to the connecting frame (31) and slidably connected to the guide rail (371).

9. The drop testing device according to any one of claims 1-7, characterized in that, The drop test equipment also includes a receiving box (4), which is located below the drop device (3) and in contact with the ground, for receiving the test piece (100) that is dropped.

10. The drop testing apparatus according to any one of claims 1-7, characterized in that, The drop test equipment also includes an operating platform (5), which includes a control panel (51) and is electrically connected to the lifting device (2) and the release component (32).

Images