Drop test device

Abstract

The utility model relates to the technical field of detection devices, and discloses a drop test device which comprises a lifting frame, a first rotating shaft, a [-shaped plate, an air cylinder, a moving plate, a second rotating shaft, a clamping plate, a first driving part and a second driving part. Before the object to be detected is released, the first rotating shaft can rotate under the driving of the first driving piece. And finally, the to-be-tested object is driven to rotate, and the angle of the to-be-tested object is adjusted in a plane. Under the driving of the second driving piece, the second rotating shaft connected with the second driving piece can rotate, under the supporting of the other second rotating shaft, the clamping plates on the two sides can drive the to-be-tested object to rotate, and the angle of the to-be-tested object is adjusted in the other mutually perpendicular plane. Therefore, the first driving part and the second driving part are matched to work, so that the function of adjusting the angle of the to-be-tested object in the three-dimensional space can be realized. Therefore, the adjustment range of the falling angle is widened, and different actual use environments can be simulated conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection devices, and particularly relates to a drop test device. BACKGROUND

[0002] A drop test bench with a height adjusting mechanism is disclosed in related technology (publication number: CN221725527U), which comprises a base, a fixed frame, a support table, a side plate, a mounting shaft, a mounting frame, a fixing mechanism, a lifting mechanism and a rotating mechanism. The fixed frame is fixedly installed on the top surface of the base. The support table is slidingly connected to the inner wall surface of the fixed frame. The side plate is fixedly installed on the top surface left side of the support table. The mounting shaft is transversely arranged through the side plate. The mounting frame is fixed on the left end of the mounting shaft. The fixing mechanism is arranged on the mounting frame and used for clamping and fixing the test object. The lifting mechanism is arranged on the base and used for lifting and moving the support table to adjust the height of the test object. The rotating mechanism is arranged on the support table and used for adjusting the angle of the clamped and fixed test object.

[0003] In the process of implementing the technical scheme of the present disclosure, it is found that at least the following problems exist in the related technology:

[0004] The drop test bench with a height adjusting mechanism can adjust the angle of the clamped and fixed test object through the design of the rotating mechanism, so that the test object can be dropped from different angles. However, the clamped and fixed test object can only be adjusted in one plane, and cannot be adjusted in a three-dimensional space. Therefore, the adjustment range of the drop angle is small, and it is difficult to simulate different actual use environments.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] In order to have a basic understanding of some aspects of the disclosed technical scheme, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important elements or delineate the scope of protection of the technical scheme, but is intended as a prelude to the detailed description below.

[0007] The technical scheme of the present disclosure provides a drop test device to improve the adjustment range of the drop angle.

[0008] In some embodiments, the falling test device comprises: a lifting frame comprising a lifting plate moving along the height direction of the lifting frame; a first rotating shaft rotatably penetrating the lifting plate along the width direction of the lifting frame; a U-shaped plate installed on the first rotating shaft and symmetrically distributed on the two sides of the first rotating shaft along the length direction of the lifting frame; a cylinder respectively installed on the two opposite side walls of the U-shaped plate and oppositely distributed; a moving plate respectively installed on the moving end of the cylinder; a second rotating shaft rotatably penetrating the two opposite side walls of the U-shaped plate along the length direction of the lifting frame; a clamping plate respectively installed on the opposite end of the second rotating shaft; a first driving member installed between the first rotating shaft and the lifting plate and configured to drive the first rotating shaft to rotate; and a second driving member installed between the second rotating shaft and the moving plate on the same side and configured to drive the second rotating shaft to rotate.

[0009] Optionally, the lifting frame further comprises: a support plate located below the lifting plate along the height direction of the lifting frame and used to abut against the ground; a linear sliding table installed on the top surface of the support plate along the height direction of the lifting frame; and a support rod uniformly installed between the moving end of the linear sliding table and the lifting plate.

[0010] Optionally, the first driving member comprises: a first motor installed on the lifting plate, the axis of the rotating end of the first motor being parallel to the axis of the first rotating shaft; a first driving gear tooth installed on the rotating end of the first motor; a first driven gear tooth installed on the first rotating shaft; and a first synchronous toothed belt sleeved on the first driving gear tooth and the first driven gear tooth.

[0011] Optionally, the second driving member comprises: a second motor installed on the moving plate on either side, the axis of the rotating end of the second motor being parallel to the axes of the second rotating shafts on the two sides; a second driving gear tooth installed on the rotating end of the second motor; a second driven gear tooth adjacent to the second driving gear tooth and installed on the second rotating shaft on the same side; and a second synchronous toothed belt sleeved on the second driving gear tooth and the second driven gear tooth.

[0012] Optionally, the device further comprises: a linear bearing respectively installed on the two opposite side walls of the U-shaped plate along the length direction of the lifting frame; and a guide shaft slidably penetrating the linear bearings on the two sides and respectively connected with the moving plates on the two sides.

[0013] Optionally, the device further comprises: a first bearing seat installed on the lifting plate and sleeved on the first rotating shaft; and a first bearing installed between the first bearing seat and the first rotating shaft.

[0014] Optionally, further comprising: a second bearing seat, respectively installed on the opposite two side walls of the U-shaped plate, and respectively sleeved on the two second rotating shafts; and a second bearing, respectively installed between the two second bearing seats and the two second rotating shafts.

[0015] Optionally, further comprising: an anti-skid pad, respectively installed on the opposite surfaces of the two clamping plates.

[0016] Optionally, further comprising: an extension rod, respectively installed between the moving end of the two cylinders and the two moving plates.

[0017] The falling test device provided by the technical scheme of the present disclosure can achieve the following technical effects:

[0018] The falling test device provided by the technical scheme of the present disclosure comprises a lifting frame, a first rotating shaft, a U-shaped plate, a cylinder, a moving plate, a second rotating shaft, a clamping plate, a first driving member and a second driving member. The lifting frame comprises a lifting plate moving along the height direction thereof, which can make lifting movement. The first rotating shaft is rotatably arranged on the lifting plate along the width direction of the lifting frame, and can make rotational movement relative to the lifting plate. The U-shaped plate is installed on the first rotating shaft and rotates under the driving of the first rotating shaft. The opposite two side walls of the U-shaped plate are symmetrically distributed on the two sides of the first rotating shaft along the length direction of the lifting frame. The two cylinders are respectively installed on the opposite two side walls of the U-shaped plate, and the two cylinders are oppositely distributed, and are both used for providing driving force to clamp or release the test object. The moving plate is respectively installed on the moving end of the two cylinders, and moves towards or reversely under the driving of the two cylinders. The second rotating shaft is rotatably arranged on the opposite two side walls of the U-shaped plate along the length direction of the lifting frame, and can make rotational movement relative to the opposite two side walls of the U-shaped plate. The clamping plate is respectively installed on the opposite end of the two second rotating shafts, and is used for abutting against the test object. The first driving member is installed between the first rotating shaft and the lifting plate, and is used for providing driving force to drive the first rotating shaft to make rotational movement. The second driving member is installed between the second rotating shaft on any side and the moving plate on the same side, and is used for providing driving force to drive the second rotating shaft on any side to make rotational movement.

[0019] In operation, controlling the two side cylinders causes the two side moving plates to move in opposite directions, ultimately causing the two side clamping plates to move in opposite directions, thus clamping or releasing the test item. Controlling the lifting frame causes the lifting plate to raise or lower the first rotating shaft, ultimately raising or lowering the two side clamping plates, changing the height of the clamped test item. Therefore, by cooperating with the two side cylinders and the lifting frame, the test item can be grabbed from a low position, moved to a higher position, and finally released to complete the drop test. Before the test item is released, the first rotating shaft rotates under the drive of the first drive component. This rotates the U-shaped plate, ultimately causing the test item to rotate, allowing for angle adjustment within a plane. Under the drive of the second drive component, the connected second rotating shaft rotates. Supported by the second rotating shaft, the two side clamping plates rotate the test item, allowing for angle adjustment within another mutually perpendicular plane. Therefore, by cooperating with the first and second drive components, the angle of the test item can be adjusted in three-dimensional space. Therefore, the adjustment range of the drop angle has been increased, making it easier to simulate different actual usage environments.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a partial cross-sectional view of the main structural schematic diagram of the drop test device provided in the embodiments of this disclosure;

[0023] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a schematic diagram of the main structure of the drop test apparatus provided in this embodiment;

[0025] Figure 4 This is a partial cross-sectional view of the side view of the drop test apparatus provided in the embodiments of this disclosure;

[0026] Figure 5 yes Figure 4 Enlarged structural diagram at point B;

[0027] Figure 6 This is a side view of the drop test apparatus provided in an embodiment of this disclosure.

[0028] Reference signs:

[0029] 10: lifting frame; 11: lifting plate; 12: support plate; 13: linear slide; 14: support rod; 20: first rotating shaft; 30: U-shaped plate; 40: air cylinder; 50: moving plate; 60: second rotating shaft; 70: clamping plate; 80: first driving member; 81: first motor; 82: first synchronous toothed belt; 90: second driving member; 91: second motor; 92: second synchronous toothed belt; 100: linear bearing; 110: guide shaft; 120: first bearing seat; 130: first bearing; 140: second bearing seat; 150: second bearing; 160: non-slip pad; 170: extension rod. DETAILED DESCRIPTION

[0030] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below, and the attached drawings are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0031] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0032] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0033] In addition, the terms "set", "connected", and "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements, or components. Those of ordinary skill in the art can understand the specific meaning of the above terms in the embodiments of the present disclosure according to the specific circumstances.

[0034] Unless otherwise specified, the term "plurality" means two or more.

[0035] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B means A or B.

[0036] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.

[0037] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0038] In combination Figures 1 to 6 As shown in the drawings, the embodiments of the present disclosure provide a drop test device, which includes a lifting frame 10, a first rotating shaft 20, an L-shaped plate 30, a cylinder 40, a moving plate 50, a second rotating shaft 60, a clamping plate 70, a first driving member 80, and a second driving member 90. The lifting frame 10 includes a lifting plate 11 that moves along the height direction thereof, and the lifting plate 11 can move up and down. The first rotating shaft 20 is rotatably arranged in the lifting plate 11 along the width direction of the lifting frame 10, and can rotate relative to the lifting plate 11. The L-shaped plate 30 is installed on the first rotating shaft 20 and rotates under the driving of the first rotating shaft 20. The opposite two side walls of the L-shaped plate 30 are symmetrically distributed on the two sides of the first rotating shaft 20 along the length direction of the lifting frame 10. The cylinders 40 are respectively installed on the opposite two side walls of the L-shaped plate 30, and the two cylinders 40 are oppositely distributed and are both used to provide driving force to clamp or release the test object. The moving plates 50 are respectively installed on the moving ends of the two cylinders 40 and move towards or away from each other under the driving of the two cylinders 40. The second rotating shafts 60 are rotatably arranged in the opposite two side walls of the L-shaped plate 30 along the length direction of the lifting frame 10, and can rotate relative to the opposite two side walls of the L-shaped plate 30. The clamping plates 70 are respectively installed on the opposite ends of the two second rotating shafts 60 and are both used to abut against the test object. The first driving member 80 is installed between the first rotating shaft 20 and the lifting plate 11 and is used to provide driving force to drive the first rotating shaft 20 to rotate. The second driving member 90 is installed between any one of the second rotating shafts 60 and the moving plate 50 on the same side and is used to provide driving force to drive the second rotating shaft 60 on the same side to rotate.

[0039] The falling test device provided by the embodiments of the present disclosure controls the work of the two side air cylinders 40, that is, the two side moving plates 50 move towards or reversely, and finally the two side clamping plates 70 move towards or reversely, so as to clamp or unclamp the to-be-tested article. The work of the lifting frame 10 is controlled, and the lifting plate 11 can drive the first rotating shaft 20 to rise or fall, finally drive the two side clamping plates 70 to rise or fall, and finally change the height of the to-be-tested article clamped and fixed. Therefore, through the cooperation of the two side air cylinders 40 and the lifting frame 10, the low to-be-tested article can be grabbed, and then moved to a high place, and finally released, so as to complete the falling test. Before the to-be-tested article is released, the first rotating shaft 20 can be rotated under the driving of the first driving member 80. Then the L-shaped plate 30 is rotated, and finally the to-be-tested article is rotated, so as to adjust the angle of the to-be-tested article in one plane. Under the driving of the second driving member 90, the second rotating shaft 60 connected with the second driving member 90 can be rotated, and under the support of the other second rotating shaft 60, the two side clamping plates 70 can drive the to-be-tested article to rotate, so as to adjust the angle of the to-be-tested article in another plane perpendicular to each other. Therefore, through the cooperation of the first driving member 80 and the second driving member 90, the to-be-tested article can be adjusted in angle in a three-dimensional space. Therefore, the adjustment range of the falling angle is improved, and different actual use environments can be simulated.

[0040] Optionally, as shown in Figure 4 and Figure 6 The lifting frame 10 further includes a support plate 12, a linear slide 13 and a support rod 14. The support plate 12 is located below the lifting plate 11 along the height direction of the lifting frame 10, and is used to abut against the ground to support the whole device. The linear slide 13 is installed on the top surface of the support plate 12 along the height direction of the lifting frame 10, and is used to provide driving force to realize linear movement. The support rod 14 is uniformly installed between the moving end of the linear slide 13 and the lifting plate 11, and is used to adjust the distance between the moving end of the linear slide 13 and the lifting plate 11 to reserve installation space for other parts of the device.

[0041] In the embodiments of the present disclosure, the work of the linear slide 13 is controlled, that is, the support rod 14 can move along the height direction of the support frame. Then the lifting plate 11 moves along the height direction of the support frame, and the automatic lifting function is realized.

[0042] Optionally, as shown in Figure 4 and Figure 6As shown, the first driving member 80 comprises a first motor 81, a first driving belt gear, a first driven belt gear and a first synchronous toothed belt 82. The first motor 81 is mounted on the lifting plate 11, the axis of the rotating end of the first motor 81 is parallel to the axis of the first rotating shaft 20, for providing driving force to realize the rotating motion function. The first driving belt gear is mounted on the rotating end of the first motor 81 and rotates under the driving of the first motor 81. The first driven belt gear is mounted on the first rotating shaft 20 for driving the first rotating shaft 20 to rotate. The first synchronous toothed belt 82 is sleeved on the first driving belt gear and the first driven belt gear for transmitting driving force.

[0043] In the embodiments of the present disclosure, the first motor 81 is controlled to work, that is, the first driving belt gear is driven to rotate. Through the first synchronous toothed belt 82, the first driven belt gear is driven to rotate, and then the first rotating shaft 20 is driven to rotate, and finally the angle automatic adjustment function is realized.

[0044] Optionally, as shown in Figure 1 , Figure 3 As shown, the second driving member 90 comprises a second motor 91, a second driving belt gear, a second driven belt gear and a second synchronous toothed belt 92. The second motor 91 is mounted on any one of the side moving plates 50, the axis of the rotating end of the second motor 91 is parallel to the axes of the two second rotating shafts 60, for providing driving force to realize the rotating motion function. The second driving belt gear is mounted on the rotating end of the second motor 91 and rotates under the driving of the second motor 91. The second driven belt gear is adjacent to the second driving belt gear and is mounted on the second rotating shaft 60 on the same side, for driving the second rotating shaft 60 connected thereto to rotate. The second synchronous toothed belt 92 is sleeved on the second driving belt gear and the second driven belt gear for transmitting driving force.

[0045] In the embodiments of the present disclosure, the second motor 91 is controlled to work, that is, the second driving belt gear is driven to rotate. Through the second synchronous toothed belt 92, the second driven belt gear is driven to rotate, and then the second rotating shaft 60 connected thereto is driven to rotate. Then under the support of the other second rotating shaft 60, the two clamping plates 70 can drive the to-be-tested article clamped and fixed to rotate, and finally the angle automatic adjustment function is realized.

[0046] Optionally, as shown in Figure 1 , Figure 3 , Figure 4 and Figure 6 Further comprising a linear bearing 100 and a guide shaft 110. The linear bearing 100 is mounted on the opposite two side walls of the L-shaped plate 30 along the length direction of the lifting frame 10, respectively, for supporting the slidable guide shaft 110. The guide shaft 110 is slidably arranged in the two linear bearings 100, respectively, and is connected with the two side moving plates 50, respectively, and moves synchronously with the two side moving plates 50.

[0047] In the embodiments of the present disclosure, the two-side linear bearing 100 and the two-side guide shaft 110 are used for guiding and supporting to improve the stability of the two-side moving plate 50 and reduce the stress on the moving end of the two-side cylinder 40.

[0048] Optionally, as shown in Figure 1 and Figure 2 , the first bearing seat 120 and the first bearing 130 are further included. The first bearing seat 120 is mounted on the lifting plate 11 and sleeved on the first rotating shaft 20. The first bearing 130 is mounted between the first bearing seat 120 and the first rotating shaft 20.

[0049] In the embodiments of the present disclosure, after the first bearing seat 120 is mounted on the lifting plate 11, the first bearing seat 120 is used for supporting and mounting the first bearing 130 and limiting the first bearing 130. The first bearing 130 is used for supporting and mounting the rotatable first rotating shaft 20, reducing the friction force on the first rotating shaft 20, and improving the rotation accuracy of the first rotating shaft 20.

[0050] Optionally, as shown in Figure 4 and Figure 5 , the second bearing seat 140 and the second bearing 150 are further included. The second bearing seat 140 is mounted on the opposite two side walls of the L-shaped plate 30 and sleeved on the two second rotating shafts 60, respectively. The second bearing 150 is mounted between the two second bearing seats 140 and the two second rotating shafts 60, respectively.

[0051] In the embodiments of the present disclosure, after the two second bearing seats 140 are mounted on the opposite two sides of the L-shaped plate 30, the two second bearing seats 140 are used for supporting and mounting the two second bearings 150 and limiting the two second bearings 150, respectively. The two second bearings 150 are used for supporting and mounting the two rotatable second rotating shafts 60, reducing the friction force on the two second rotating shafts 60, and improving the rotation accuracy of the two second rotating shafts 60.

[0052] Optionally, as shown in Figure 1 and Figure 3 , the anti-skid pad 160 is further included. The anti-skid pad 160 is mounted on the opposite surfaces of the two clamping plates 70, respectively.

[0053] In the embodiments of the present disclosure, the two anti-skid pads 160 are used for abutting against the surface of the to-be-tested article to increase the contact area with the to-be-tested article. At the same time, the anti-skid pads 160 serve as a buffer to reduce the impact on the to-be-tested article.

[0054] Optionally, as shown in Figure 1 and Figure 3 , the extension rod 170 is further included. The extension rod 170 is mounted between the moving end of the two-side cylinder 40 and the two-side moving plate 50, respectively.

[0055] In the embodiments of the present disclosure, the two-side extension rods 170 are used to adjust the distance between the moving end of the two-side cylinders 40 and the two-side moving plates 50, so as to reserve installation space for other components of the device.

[0056] The above description and drawings suffice to show the embodiments of the present disclosure to enable a person skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. The individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A drop test apparatus, characterized in that, include: A lifting frame, the lifting frame including a lifting plate that moves along its height direction; The first rotating shaft is rotatably inserted through the lifting plate along the width direction of the lifting frame; An inverted plate is installed on the first rotating shaft, and along the length of the lifting frame, the opposite side walls of the inverted plate are symmetrically distributed on both sides of the first rotating shaft; Cylinders are respectively installed on the opposite side walls of the C-shaped plate, and the cylinders on both sides are distributed opposite to each other; Movable plates are respectively installed on the movable ends of the cylinders on both sides; The second rotating shaft is rotatably inserted through the opposite side walls of the C-shaped plate along the length of the lifting frame. Clamping plates are respectively installed on the opposite ends of the second rotating shaft on both sides; A first driving component is installed between the first rotating shaft and the lifting plate, and is configured to drive the first rotating shaft to rotate. The second drive unit is installed between the second rotating shaft on either side and the movable plate on the same side, and is configured to drive the second rotating shaft on either side to rotate.

2. The drop test apparatus according to claim 1, characterized in that, The lifting frame also includes: A support plate, located below the lifting plate along the height direction of the lifting frame, is used to abut against the ground; A linear slide is installed on the top surface of the support plate along the height direction of the lifting frame; Support rods are evenly installed between the moving end of the linear slide and the lifting plate.

3. The drop test apparatus according to claim 1, characterized in that, The first driving element includes: A first motor is installed on the lifting plate, and the axis of the rotating end of the first motor is parallel to the axis of the first rotating shaft. The first driving belt gear is installed on the rotating end of the first motor; A first driven belt gear is mounted on the first rotating shaft; The first synchronous toothed belt is fitted onto the first driving belt gear and the first driven belt gear.

4. The drop test apparatus according to claim 1, characterized in that, The second driving element includes: A second motor is installed on either side of the movable plate, and the axis of the rotating end of the second motor is parallel to the axis of the second rotating shaft on both sides. The second drive belt gear is installed on the rotating end of the second motor; The second driven belt gear is adjacent to the second driving belt gear and is mounted on the same side of the second rotating shaft; The second synchronous toothed belt is fitted onto the second driving belt gear and the second driven belt gear.

5. The drop test apparatus according to claim 1, characterized in that, Also includes: Linear bearings are installed on opposite side walls of the C-shaped plate along the length of the lifting frame. Guide shafts are slidably inserted through the linear bearings on both sides and are connected to the movable plates on both sides respectively.

6. The drop test apparatus according to any one of claims 1 to 5, characterized in that, Also includes: The first bearing seat is installed on the lifting plate and sleeved on the first rotating shaft; The first bearing is installed between the first bearing housing and the first rotating shaft.

7. The drop test apparatus according to any one of claims 1 to 5, characterized in that, Also includes: The second bearing housing is respectively installed on the opposite side walls of the C-shaped plate, and is respectively sleeved on the second rotating shaft on both sides; The second bearing is installed between the second bearing housings on both sides and the second rotating shafts on both sides.

8. The drop test apparatus according to any one of claims 1 to 5, characterized in that, Also includes: Anti-slip mats are installed on the opposite sides of the clamps on both sides.

9. The drop test apparatus according to any one of claims 1 to 5, characterized in that, Also includes: Extension rods are respectively installed between the moving ends of the cylinders on both sides and the moving plates on both sides.

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