Impact test equipment

Abstract

The utility model relates to an impact test device, which includes a main frame, a release device and a weight; the release device is connected to the main frame and is used to fix or release the weight; the weight is provided with a balance member, and the balance member is used to maintain the horizontal state of the weight in the released state. The main frame maintains the horizontal stability of the release device, the weight and the test target, and the weight always remains horizontal and does not tilt; it is ensured that the weight impacts the test target in the same state each time it falls, thereby improving the consistency of the battery impact test conditions, avoiding the poor reliability of the test results caused by the inconsistent state of the weight impacting the battery, reducing the interference factors in the impact test, and improving the test efficiency and test accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to an impact testing device. Background Art

[0002] With the development of new energy technology, power batteries are increasingly used in daily life. However, during use, power batteries may encounter impacts from the front or bottom. Therefore, in order to determine the impact resistance of the battery, it is necessary to perform an impact test on the battery. The impact test is to make the impact device fall freely, impact the battery, and observe and record the battery performance.

[0003] There are many types of battery impact resistance testing devices, but due to the influence of factors such as air resistance and the falling posture of the impact device during the impact test process, there are large differences in the results of multiple tests, which affects the credibility of the test results. Utility Model Content

[0004] Based on this, it is necessary to provide an impact testing device to address the problems of difficulty in controlling impact test variables and poor consistency of test results.

[0005] An impact testing device, comprising:

[0006] Main frame;

[0007] A release device connected to the main frame for fixing or releasing the weight; and

[0008] The weight is provided with a balance member, and the balance member is used to keep the weight in a horizontal state when released.

[0009] In one embodiment, the weight comprises:

[0010] a weight portion, the balance member being disposed on one side of the weight portion; and

[0011] The impact part is arranged at the other side of the weight part and is used for impacting the test target. The vertical axis of the impact part coincides with the vertical axis of the weight part.

[0012] In one embodiment, the balancing member includes a first balancing portion and a second balancing portion, and the first balancing portion and the second balancing portion are symmetrical about an axis in a vertical direction of the weight portion.

[0013] In one embodiment, the release device comprises:

[0014] A load-bearing member connected to the main frame and used to bear the weight; and

[0015] The magnetic attraction member is arranged on the load-bearing member and is used for fixing or releasing the heavy hammer.

[0016] In one of the embodiments, a receiving cavity is provided on a side of the load-bearing member close to the weight, and the receiving cavity is used to receive the balancing member.

[0017] In one of the embodiments, when the release device fixes the weight, the weight is arranged horizontally, and the axis of the impact part in the vertical direction coincides with the axis of the magnetic attraction part in the vertical direction.

[0018] In one embodiment, the main frame includes:

[0019] A carrying platform, used to carry the test target;

[0020] A driving member connected to the carrying platform and used to drive the release device to move closer to or away from the carrying platform in a vertical direction; and

[0021] The guide member is connected to the bearing platform and arranged in parallel with the driving member, and is used for limiting the movement of the weight in the horizontal direction.

[0022] In one of the embodiments, limiting portions are provided at opposite ends of the weight, and the limiting portions are sleeved on the driving member and the guide member to limit the movement of the weight in the horizontal direction and / or the vertical direction.

[0023] In one embodiment, there is a gap between the limiting portion and the driving member and the guiding member.

[0024] In one embodiment, the impact testing device further includes a distance measuring device, which is used to measure the distance between the weight and the test target.

[0025] The above-mentioned impact test device maintains the level stability of the release device, the heavy hammer and the test target through the main frame. When the heavy hammer is in the fixed state and the released state, the heavy hammer always remains horizontal and does not tilt. It is ensured that the heavy hammer impacts the test target in the same state each time it falls, thereby improving the consistency of the battery impact test conditions, avoiding the poor reliability of the test results caused by the inconsistent state of the heavy hammer impacting the test target (battery), reducing interference factors in the impact test, and improving the test efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic structural diagram of an impact testing device in one embodiment of the utility model;

[0028] Figure 2This is a schematic diagram of the structure of a heavy hammer in one embodiment of the utility model;

[0029] Figure 3 This is a schematic structural diagram of an impact testing device in another embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the connection structure between the weight and the main frame in another embodiment of the utility model.

[0031] The reference numerals in the specific implementation manner are as follows:

[0032] 10. Main frame; 20. Release device; 30. Weight; 102. Carrying platform; 104. Guide member; 106. Driving member; 202. Load-bearing member; 204. Accommodating chamber; 206. Magnetic member; 208. Distance measuring member; 302. Balance member; 304. Impact member; 306. Weight member; 308. Limiting member. DETAILED DESCRIPTION

[0033] The following is a detailed description of the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0040] See also Figure 1 , Figure 1The schematic diagram of the structure of the impact test device in one embodiment of the utility model is shown. The impact test device provided in one embodiment of the utility model includes a main frame 10, a release device 20 and a weight 30. The main frame 10 is a component for carrying the release device 20, the weight 30 and the test target. The main frame 10 fixes the release device 20 at a high place and provides support for the release device 20 in the longitudinal direction. When the main frame 10 carries the release device 20 and the weight 30, no matter the weight 30 is in a fixed state, a released state or an impact state, the main frame 10 remains vertically stable, and controls the release device 20 and the test target to remain horizontally stable. The size of the main frame can be adjusted according to the size of the release device 20, the weight and the test target. Optionally, the test target is a battery cell, a battery module, a battery box or a battery pack, etc., and the shape of the test target can be a rectangular parallelepiped, a flat body, a cylinder or other shapes.

[0041] The release device 20 is a component used to fix or release the weight. The release device 20 is connected to the main frame 10 and remains horizontal. The release device 20 is connected to the weight 30. Optionally, the release device 20 can be connected to the weight by clamping, magnetic connection, snap connection, pin connection, and docking connection. The material of the release device 20 needs to match the connection method between the release device 20 and the weight 30. When the release device 20 fixes the weight, the weight remains horizontal in the fixed state. At the moment when the release device 20 releases the weight, the weight still remains horizontal and remains in a horizontal state and falls freely.

[0042] The weight 30 is a component used to impact the test target. After being released by the release device 20, the weight is in a released state. The weight 30 maintains its own horizontal state in the released state by setting a balance member 302. Among them, the fixed state of the weight refers to the state in which the weight is fixed to the release device 20; the released state of the weight refers to the free fall process state of the weight from being separated from the release device 20 to impacting the test target; the impact state of the weight refers to the process state from the weight contacting the test target to the beginning of the impact to the completion of the impact process, and the weight is still again. The balance member 302 is used to maintain the horizontal state of the weight in the released state, so that the weight can remain horizontal at the moment of impacting the test target. Optionally, weights of different weights can be selected according to the impact test requirements.

[0043] In this embodiment, the main frame is used to maintain the release device, the weight and the test target at a stable level. When the weight is in a fixed state or a released state, the weight always remains horizontal and does not tilt. This ensures that the weight impacts the test target in the same state each time it falls, thereby improving the consistency of the test conditions for impacting the test target, avoiding poor reliability of the test results caused by inconsistent states of the weight impacting the test target, reducing interference factors in the impact test, and improving test efficiency and accuracy.

[0044] Please combine Figure 1 and Figure 2 , Figure 2 A schematic diagram of the structure of a weight in an embodiment of the utility model is shown. In some embodiments, the weight 30 includes a weight portion 306 and an impact portion 304. The top surface of the weight portion 306 is connected to the bottom surface of the release device. The weight portion 306 can be a rectangular parallelepiped. There is no limitation on the shape of the weight portion. Different materials, sizes and shapes can be used to meet the weight requirements and balance requirements of the impact test.

[0045] The impact part 304 is a component used to impact the test target. The impact part 304 is connected to the bottom surface of the weight part 306. The impact part 304 is conical and protrudes from the weight part. The tip of the cone top can be set to a rounded arc. The impact part 304 is axisymmetric, and the axis of the impact part 304 in the vertical direction coincides with the axis of the weight part in the vertical direction. When the heavy hammer is in the impact state, the impact part 304 contacts the test target for the first time, and produces an impact on the test target, and completes the impact test. Optionally, the impact part 304 can be formed on the weight part 306, or it can be connected to the weight part by screwing, snapping, welding, etc.; forming on the weight part means that when the weight part is manufactured, the impact part 304 is also processed and formed on the weight part, which can be cast as a whole or machined as a whole or other methods. When the impact part 304 is connected to the weight part separately, the shape of the impact part 304 can be adjusted according to the needs of the impact test to meet different needs.

[0046] The balancing piece 302 is connected to the top surface of the weight portion. The balancing piece 302 and the impact portion 304 can be of similar shape and also axially symmetrical, and the balancing piece 302 protrudes from the top surface of the weight portion. The balancing piece 302 includes a first balancing portion and a second balancing portion, the first balancing portion and the second balancing portion are symmetrical about the axis of the vertical direction of the impact portion, and are arranged on opposite sides of the weight portion in the vertical direction. The balancing piece can also be of other shapes, and it is only necessary to ensure that the shape, size, and weight of the first balancing portion and the second balancing portion are the same. The shape of the balancing piece cannot be understood as a limitation of the present application. Optionally, the balancing piece 302 can be formed on the weight portion, or can be connected to the weight portion by screwing, snapping, welding, etc.; being formed on the weight portion means that when the weight portion is manufactured, the balancing piece 302 is simultaneously processed and formed on the weight portion, and can be one-piece casting or one-piece machining or other methods.

[0047] In this embodiment, the vertical axis of the weight part and the vertical axis of the impact part coincide with each other, and the balancing parts are symmetrically arranged at the opposite ends of the weight part about the vertical axis of the impact part. The center of gravity of the weight is maintained on the central axis, so that the weight can remain horizontal when released; the center of gravity of the first balancing part and the second balancing part and the center of gravity of the impact part form a triangular structure, which stabilizes the horizontal state of the weight during the falling process, so that the impact part can stably impact the same position of the test target, thereby ensuring the consistency of the test results.

[0048] See also Figure 3 , Figure 3 The schematic diagram of the structure of the impact test device in another embodiment of the utility model is shown. In some embodiments, the main frame 10 includes a bearing platform 102, a driving member 106 and a guide member 104. The bearing platform 102 is used to bear the test target; the driving member 106 is connected to the bearing platform 102 and is used to drive the release device 20 to approach or move away from the bearing platform 102 in the vertical direction; the guide member 104 is connected to the bearing platform 102 and is arranged in parallel with the driving member 106, and is used to limit the movement of the weight 30 in the horizontal direction.

[0049] The bearing platform 102 refers to a component that carries the test target, the release device, and the heavy hammer. The test target is placed on the bearing platform 102, and the test target is placed according to the test requirements. The bearing platform 102 is flat and symmetrical about the axis. The bearing platform 102 is provided with fixed through holes, which are respectively used to connect the driving member 106 and the guide member 104. The two through holes are symmetrically arranged about the symmetry axis of the bearing platform 102. The driving member 106 and the guide member can be connected to the bearing platform 102 by screwing, snapping or riveting. Optionally, the bearing platform 102 can fix and clamp the test target to ensure that the test target will not shift or shake during the impact test; the clamping width or clamping angle can also be adjusted according to the type and size of the test target. Furthermore, the bearing platform 102 is also provided with a shockproof structure to reduce the impact of vibration on the test target during the impact test. For example, the shockproof structure can use shock-absorbing pads, shock-absorbing materials, etc.

[0050] The driving member 106 is a component used to drive the release device to move closer to or away from the load-bearing platform in the vertical direction. The driving member 106 can be in the form of a lead screw plus a servo motor, or a chain to adjust the height of the release device. Exemplarily, the release device adjusts its height through the driving member 106, and a suitable height can be selected for impact testing according to relevant test requirements, or the release device can be lowered above the weight after the impact test is completed, and the weight is fixed and raised to the corresponding height for the next impact test.

[0051] The guide member 104 is a component used to limit the position of the weight and the release device. Optionally, the guide member 104 is a guide rod, and the guide member 104 is vertically inserted on the bearing platform. When the weight is in the release state and does not fall horizontally, the guide member 104 can limit the falling trajectory of the weight; when the weight is in the impact state, the guide member 104 can limit the movement of the weight in the horizontal direction. The guide member 104 can carry the release device 20 together with the driving member 106, and the movement direction of the release device 20 is limited by the guide member 104, so that the release device 20 always remains horizontal during the adjustment process, thereby ensuring the level of the weight in the fixed state.

[0052] In this embodiment, the load-bearing platform can adjust the load-bearing angle according to the type and size of the test target, and is suitable for a variety of test targets, thereby expanding the scope of application of the impact testing device; through the driving part and the guide part, the horizontal displacement of the heavy hammer and the release platform can be limited to avoid the deviation of the heavy hammer due to rebound and shaking during the impact process, resulting in inconsistent test results, thereby improving the stability of the impact testing device.

[0053] See also Figure 3 and Figure 4 , Figure 4 A schematic diagram of the connection structure between the weight and the main frame in another embodiment of the utility model is shown. In some embodiments, limit portions 308 are provided at the opposite ends of the weight. The limit portions 308 are sleeved on the driving member and the guide member to limit the movement of the weight in the horizontal direction and / or vertical direction.

[0054] The limiting part 308 is arranged at the opposite ends of the weight, and the weight is clamped between the guide member and the driving member by the limiting part 308. Exemplarily, the limiting part 308 is a limiting arc, and the radius of the circumscribed circle of the limiting arc is slightly larger than the radius of the guide member and the driving member. The weight will not contact the guide member and the driving member during the falling process, and it can be ensured that the weight always remains horizontal in the released state. In the released state of the weight, once the weight contacts the guide member or the driving member, it is considered that the weight is not falling horizontally, and the test result can be invalidated. Furthermore, after the weight collides with the test target, it will rebound or shake due to the collision. The limiting part 308 can limit the position of the weight in the horizontal direction to avoid affecting the impact test results.

[0055] In this embodiment, the limit part is used to ensure that the weight maintains horizontal movement in the fixed state and the released state, so that the factors such as air resistance that the weight is subjected to during the falling process are basically the same, ensuring that the impact force of the weight on the test target is the same each time; when the weight is in the impact state, the horizontal displacement caused by the collision is reduced, so that the impact point is kept in a fixed area, thereby improving the consistency of the test conditions and the reliability of the test results.

[0056] Please continue reading Figure 3 In some embodiments, the release device 20 includes a load-bearing member 202, a magnetic member 206, and a distance measuring member 208. The load-bearing member 202 is connected to the main frame 10 and is used to bear the weight; the magnetic member 206 is disposed on the load-bearing member 202 and is used to fix or release the weight; and the distance measuring member 208 is used to measure the distance between the weight and the test target.

[0057] The load-bearing member 202 is a component for carrying a magnetic member, a distance measuring member and a weight. The two ends of the load-bearing member 202 are respectively connected to the guide member and the driving member, and the load-bearing member 202 is connected to the driving member, and the movement of the load-bearing member 202 in the vertical direction is realized by the driving member. Exemplarily, the driving member drives the load-bearing member 202 in the form of a lead screw plus a servo motor, and the driving member provides a driving force for the load-bearing member 202; the other end of the load-bearing member 202 is connected to the guide member, and the guide member provides a guide for the driving direction of the load-bearing member 202. When the load-bearing member 202 approaches or moves away from the load-bearing platform, it further drives the release device 20 as a whole to approach or move away from the load-bearing platform. Optionally, the load-bearing member 202 and the guide member can be connected by a slide rail groove connection, a bearing connection and a pulley assembly; the load-bearing member 202 and the driving member are connected by a screw connection or a snap connection, and the load-bearing member 202 is driven by the driving member to move along the guide member.

[0058] A receiving cavity 204 is provided on the side of the load-bearing member close to the weight, and the receiving cavity 204 is used to receive the balancing member, and the size of the receiving cavity 204 is slightly larger than the size of the balancing member. When the weight is in a fixed state, the balancing member is located in the receiving cavity 204, at which time, the distance between the central axis of the first balancing portion and the central axis of the second balancing portion is greater than the distance between the central axes of the two receiving cavities 204, and the axis of the impact portion in the vertical direction coincides with the axis of symmetry between the two receiving cavities 204. Optionally, the receiving cavity 204 can be formed on the load-bearing member, and forming on the load-bearing member means that when the load-bearing member is manufactured, the receiving cavity 204 is simultaneously processed and formed on the load-bearing member, and can be integrally formed by casting or integrally formed by machining or other methods.

[0059] The magnetic component 206 is a component used to fix or release the weight. The magnetic component 206 is arranged on the load-bearing member, and the central axis of the magnetic component 206 coincides with the axis of symmetry between the two accommodating cavities. When the magnetic component 206 fixes the weight, the axis of the impact part along the vertical direction coincides with the central axis of the magnetic component 206, so that the weight is in a horizontal state. A groove is provided on one side of the load-bearing member close to the weight for accommodating the magnetic component 206. Optionally, the magnetic component 206 includes an electromagnet, which uses wired remote control or / and wireless remote control to control the generation or elimination of magnetic force.

[0060] In this embodiment, the weight is fixed and released by a magnetic component, which makes the fixing and releasing of the weight quick and convenient. At the same time, the weight is only subject to gravity and air resistance. The gravity of the weight and the air resistance are determined, and the horizontal fall of the weight makes it subject to the same air resistance, ensuring that the impact force of the weight hitting the battery is the same each time, and the test conditions are highly consistent; when the weight is fixed by the magnetic component, the balancing part is located in the accommodating cavity, which can ensure that the weight is in a horizontal state, and the suction force of the magnetic component acts on the center of the weight, so that the weight is in a horizontal state at the moment of release; the temperature of the test target rises sharply after the impact test, and both wired remote control signals and wireless remote control can be used for long-distance control to avoid safety hazards during the test.

[0061] Please continue reading Figure 3 In some embodiments, the impact test device further includes a distance measuring member 208, which is a member for measuring the distance between the weight and the test target. The distance measuring member 208 is arranged on a side of the load-bearing member close to the weight, and the distance measuring member 208 is flush with the surface after being connected to the load-bearing member. Optionally, the distance measuring member 208 is a laser rangefinder, an ultrasonic rangefinder or a radar rangefinder, and the rangefinder can be embedded in the load-bearing member or connected to the side surface of the load-bearing member. Exemplarily, the weight is fixed by a magnetic member, and the release device 20 and the weight are adjusted to the required height by the rangefinder and the drive member, and the magnetic member is controlled to be demagnetized, and the weight is released and falls horizontally to impact the test target, completing the first impact test; the drive member drives the release device 20 to approach the bearing platform, so that the magnetic member is re-magnetized, and the magnetic member fixes the weight again; the drive member drives the release device 20 away from the bearing platform, and the distance is measured by the rangefinder until it reaches the same height, and the next impact test is performed.

[0062] In this embodiment, by setting up a rangefinder, the deformation of the battery after the impact test can be calculated based on the maximum height of the weight and the height of the weight above the battery surface before it falls. The consistency of the impact resistance of multiple batteries is detected by detecting the deformation, which ensures that the parameters of each impact test are the same, thereby improving the reliability of the test results.

[0063] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An impact testing device, characterized in that: The impact testing device comprises: Main frame; A release device, connected to the main frame, for fixing or releasing the weight; and The weight is provided with a balancing piece, and the balancing piece is used to keep the weight in a horizontal state in a released state.

2. The impact testing device according to claim 1, characterized in that: The heavy hammer comprises: a weight portion, the balance member being disposed on one side of the weight portion; and The impact part is arranged at the other side of the weight part and is used for impacting the test target. The axis of the impact part in the vertical direction coincides with the axis of the weight part in the vertical direction.

3. The impact testing device according to claim 2, characterized in that: The balance member includes a first balance portion and a second balance portion, and the first balance portion and the second balance portion are symmetrical with respect to an axis in a vertical direction of the weight portion.

4. The impact testing device according to claim 1, characterized in that: The release device comprises: A load-bearing member connected to the main frame and used to bear the weight; and The magnetic attraction member is arranged on the load-bearing member and is used for fixing or releasing the weight.

5. The impact testing device according to claim 4, characterized in that: A receiving cavity is provided on one side of the load-bearing member close to the weight, and the receiving cavity is used to receive the balancing member.

6. The impact testing device according to claim 4, characterized in that: When the release device fixes the weight, the weight is arranged horizontally, and the axis of the impact part in the vertical direction coincides with the axis of the magnetic attraction part in the vertical direction.

7. The impact testing device according to claim 1, characterized in that: The main framework includes: A carrying platform, used to carry the test target; a driving member connected to the carrying platform and used to drive the releasing device to move closer to or away from the carrying platform in a vertical direction; and A guide member is connected to the bearing platform and arranged in parallel with the driving member, and is used to limit the movement of the weight in the horizontal direction.

8. The impact testing device according to claim 7, characterized in that: The two opposite ends of the weight are provided with limiting parts, and the limiting parts are sleeved on the driving member and the guide member to limit the movement of the weight in the horizontal direction and / or the vertical direction.

9. The impact testing device according to claim 8, characterized in that: There is a gap between the limiting portion and the driving member and the guiding member.

10. The impact testing device according to claim 1, characterized in that: The impact testing device further comprises a distance measuring component, and the distance measuring component is used to measure the distance between the weight and the test target.

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