Impact device

Abstract

The invention relates to an impact device. The impact device comprises a base; the support assembly is arranged on the base and comprises a first fixing plate and a second fixing plate; the energy storage assembly comprises a motor, a lead screw, a bottom plate, a spring and a clamping hook disc, the motor is arranged on the first fixing plate, the lead screw is vertically arranged and upwards penetrates through the first fixing plate, the lead screw is in threaded fit with the clamping hook disc, the top of the spring is fixed to the bottom face of the first fixing plate, and the bottom of the spring is fixed to the top face of the bottom plate; the releasing assembly comprises an air cylinder arranged on the support assembly, and the air cylinder is used for controlling the clamping hook pin to act so that the clamping hook pin can release the clamping hook; the impact assembly comprises an impact head and a punch guide column; the transmission assembly comprises a lever, one end of the lever is movably connected with the bottom of the bottom plate, and the other end of the lever is located below the impact assembly. The invention provides an impact device which can stably and accurately provide impact energy required in a power battery pack bottom impact test.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle battery testing, and in particular to an impact device. Background Art

[0002] At present, battery pack bottom impact devices have been put into use in the relevant field. However, this type of impact device has some obvious problems. The movement of its impact head adopts a multi-guide rod mechanism, which makes the mass structure of the impact head extremely complex. Because of this, it is impossible to accurately simulate the impact energy required for bottom impact in practical applications.

[0003] On the other hand, the impact head of the existing device directly obtains the energy for upward impact from the energy source such as the elastic element or cylinder, but it cannot be decoupled in time after the impact head collides with the energy source. This causes the impact head to rebound after completing the first impact, which in turn causes a secondary impact. This secondary impact may damage the impact device, affect the accuracy of subsequent tests, and cause additional damage to the battery pack, which brings great trouble to the performance evaluation and safety testing of the battery pack. It is urgent to further improve and perfect the impact device. Summary of the invention

[0004] In view of the above problems in the prior art, the present invention proposes an impact device that can stably and accurately provide the impact energy required for the bottom impact test of a power battery pack.

[0005] Specifically, the present invention proposes an impact device suitable for impact testing the bottom of a power battery pack, comprising:

[0006] Base;

[0007] A bracket assembly, arranged on the base, comprising a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are arranged above the base;

[0008] The energy storage assembly comprises a motor, a screw rod, a bottom plate, a spring and a hook plate, wherein the motor is arranged on the first fixing plate, the screw rod is arranged vertically and passes through the first fixing plate upward, the screw rod is threadedly matched with the hook plate, the top of the spring is fixed on the bottom surface of the first fixing plate, and the bottom of the spring is fixed on the top surface of the bottom plate, and the motor is used to drive the screw rod to rotate so as to make the hook plate rise or fall; the hook plate is provided with a hook pin, and the bottom plate is provided with a hook;

[0009] A release assembly, comprising a cylinder disposed on the bracket assembly, the cylinder being used to control the action of the hook pin so that the hook pin releases the hook;

[0010] An impact assembly, comprising an impact head and a punch guide column, wherein the impact head is arranged on the top of the punch guide column, and the punch guide column is vertically penetrated on the second fixing plate;

[0011] The transmission assembly comprises a lever, one end of which is movably connected to the bottom of the base plate, and the other end of which is located below the impact assembly.

[0012] According to one embodiment of the present invention, the energy storage assembly includes a plurality of springs arranged around the hook disk. When the hook pin clamps the hook, the motor drives the screw rod to rotate, driving the hook disk and the bottom plate to rise, so that the spring accumulates elastic potential energy.

[0013] According to one embodiment of the present invention, the energy storage assembly further comprises a plurality of guide columns vertically arranged at the bottom of the first fixed plate, the free ends of the guide columns pass downward through the bottom plate, and the guide columns are used to guide the bottom plate to move in a vertical direction.

[0014] According to one embodiment of the present invention, the bracket assembly includes a plurality of vertical plates and a third fixing plate, the first fixing plate, the second fixing plate and the third fixing plate are arranged on the vertical plates; and the cylinder is arranged on the third fixing plate.

[0015] According to an embodiment of the present invention, the bottom plate, the first fixing plate, the second fixing plate and the third fixing plate are arranged in parallel.

[0016] According to one embodiment of the present invention, the impact device further comprises a guide tube vertically arranged on the bottom surface of the second fixing plate, and the guide tube is sleeved on the punch guide column.

[0017] According to one embodiment of the present invention, the transmission assembly further comprises a bearing seat disposed on the base, and the lever is arranged on the bearing seat.

[0018] According to one embodiment of the present invention, a pulley is provided at the top of the other end of the lever, and a buffer block is provided at the bottom of the punch guide column;

[0019] After one end of the lever is impacted, the other end drives the pulley to move upward to hit the buffer block.

[0020] According to one embodiment of the present invention, the impact device further comprises a speedometer frame and a laser speedometer, wherein the laser speedometer is arranged on the speedometer frame;

[0021] The position of the velocimeter frame is adjusted so that the laser velocimeter can measure the impact velocity of the impact head.

[0022] According to one embodiment of the present invention, a level bubble is provided on the base for adjusting the level of the base; and a plurality of universal wheels are also provided at the bottom of the base.

[0023] An impact device provided by the present invention adjusts impact energy through an energy storage component and implements impact on the impact component through a lever, thereby being able to stably and accurately provide the impact energy required for the bottom impact test of a power battery pack.

[0024] It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and together with the description serve to explain the principle of the present invention.

[0026] In the attached figure:

[0027] Figure 1 A schematic structural diagram of an impact device according to an embodiment of the present invention is shown.

[0028] Figure 2 A schematic structural diagram of an impact device according to an embodiment of the present invention is shown.

[0029] Figure 3 A partial schematic diagram of a hook plate and a bottom plate according to an embodiment of the present invention is shown.

[0030] Figure 4 yes Figure 3 Left view of the active pin in .

[0031] Figure 5 A top view of a hook plate and a movable pin according to an embodiment of the present invention is shown.

[0032] The above drawings include the following reference numerals:

[0033] Impact device 100

[0034] Base 101

[0035] Bracket assembly 102

[0036] Energy storage component 103

[0037] Release assembly 104

[0038] Impact assembly 105

[0039] Transmission assembly 106

[0040] First fixing plate 107

[0041] The second fixing plate 108

[0042] Motor 109

[0043] Screw 110

[0044] Bottom plate 111

[0045] Spring 112

[0046] Hook plate 113

[0047] Hook pin 114

[0048] Hook 115

[0049] Cylinder 116

[0050] Impact head 117

[0051] Punch guide 118

[0052] Leverage 119

[0053] Guide column 120

[0054] Riser 121

[0055] The third fixing plate 122

[0056] Guide tube 123

[0057] Bearing seat 124

[0058] Pulley 125

[0059] Buffer block 126

[0060] Speedometer stand 127

[0061] Laser speed meter 128

[0062] Horizontal Bubble 129

[0063] Universal wheel 130

[0064] Upper chuck 131

[0065] Middle chuck 132

[0066] Lower chuck 133 Hook spring 134

[0067] Stud bearing 135

[0068] Bearing guide groove 136

[0069] Top block 137

[0070] Activity pin 138 DETAILED DESCRIPTION

[0071] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0072] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0073] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0074] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0075] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0076] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0077] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0078] Figure 1 A schematic structural diagram of an impact device according to an embodiment of the present invention is shown. Figure 2 The schematic diagram of the structure of an impact device of an embodiment of the present invention is shown. As shown in the figure, the present invention provides an impact device 100 suitable for impact testing the bottom of a power battery pack. The impact device 100 mainly includes a base 101, a bracket assembly 102, an energy storage assembly 103, a release assembly 104, an impact assembly 105 and a transmission assembly 106.

[0079] The support assembly 102 is disposed on the base 101. The support assembly 102 includes a first fixing plate 107 and a second fixing plate 108. The first fixing plate 107 and the second fixing plate 108 are disposed above the base 101.

[0080] The energy storage assembly 103 includes a motor 109, a screw rod 110, a base plate 111, a spring 112 and a hook plate 113. The motor 109 is fixedly arranged on the first fixed plate 107 to provide a power source for the energy storage assembly 103. The screw rod 110 is arranged vertically and passes through the first fixed plate 107 upward. The screw rod 110 is threadedly matched with the hook plate 113. The top of the spring 112 is fixed to the bottom surface of the first fixed plate 107, and the bottom thereof is fixed to the top surface of the base plate 111. The motor 109 is mainly used to drive the screw rod 110 to rotate so that the hook plate 113 can achieve an ascending or descending action between the first fixed plate 107 and the base plate 111. A hook pin 114 is provided on the hook plate 113. A hook 115 is provided on the base plate 111.

[0081] The release assembly 104 includes a cylinder 116 disposed on the bracket assembly 102. The cylinder 116 is used to accurately control the action of the hook pin 114 so that the hook pin 114 accurately releases the hook 115. That is, the hook 115 of the bottom plate 111 cooperates with the hook pin 114 on the hook plate 113 to form a fixed connection and separation between the hook plate 113 and the bottom plate 111. When the hook pin 114 and the hook 115 are released, the hook plate 113 and the bottom plate 111 are separated. The motor 109 can only lift or lower the hook plate 113 through the screw rod 110. When the hook pin 114 and the hook 115 are clamped to each other, the hook plate 113 and the bottom plate 111 are fixedly connected. The motor 109 can be driven by the screw rod 110 to synchronously lift or lower the hook plate 113 and the bottom plate 111. During the rising process of the bottom plate 111, the spring 112 is compressed to accumulate elastic potential energy.

[0082] The impact assembly 105 includes an impact head 117 and a punch guide post 118. The impact head 117 is disposed on the top of the punch guide post 118, and the punch guide post 118 is vertically penetrated on the second fixing plate 108.

[0083] The transmission assembly 106 mainly includes a lever 119 . One end of the lever 119 is movably connected to the bottom of the bottom plate 111 , and the other end is located below the impact assembly 105 .

[0084] The impact device 100 provided by the present invention accumulates elastic potential energy in the spring 112 by means of the energy storage component 103 and the release component 104, and separates the bottom plate 111 through the release component 104. The bottom plate 111 moves downward under the elastic potential energy of the spring 112, and the impact energy of the impact component 105 is provided through the transmission component 106. It is easy to understand that before the impact test on the bottom of the power battery pack, the impact speed needs to be determined. According to the kinetic energy formula Where E represents the kinetic energy of the object, m represents the mass of the object, and v represents the speed of the object. Kinetic energy is the energy of an object due to its motion. The speed that the impact head 117 needs to be set can be calculated based on the required impact energy. Assuming that the overall mass m of the impact assembly 105 is 10 kg and the impact energy required is 125 J. According to the calculation, the speed v that the impact head 117 needs to be set is 5 m / s.

[0085] Figure 3 A partial schematic diagram of a hook plate and a bottom plate according to an embodiment of the present invention is shown. Figure 4 yes Figure 3 Left view of the active pin in . Figure 5 The top view of the hook plate and the movable pin of one embodiment of the present invention is shown. As shown in the figure, the hook plate 113 includes an upper chuck 131, a middle chuck 132 and a lower chuck 133. The middle chuck 132 is arranged between the upper chuck 131 and the lower chuck 133. The middle chuck 132 is provided with a hook spring 134 and a hook pin 114 in the radial direction. The hook spring 134 is kept in a compressed state and is used to push the hook pin 114 to move radially inward. A stud bearing 135 is provided on the top of the hook pin 114, and the stud bearing 135 cooperates with a bearing guide groove 136 provided on the bottom surface of the upper chuck 131. A top block 137 is provided on the edge of the upper chuck 131, and a movable pin 138 is provided at the bottom of the cylinder 116. The bottom of the movable pin 138 is wedge-shaped, and cooperates with the top block 137 structure. The movable pin 138 can drive the top block 137 to move so that the upper chuck 131 rotates along the axis of the hook plate 113. A hook 115 is provided at the center of the bottom plate 111. A slot is provided on the hook 115, and the hook pin 114 extends into the slot so that the two are clamped to each other in the vertical direction. Figures 3 to 5 As shown, when the hook pin 114 is locked with the hook 115, the movable pin 138 moves downward, and the movable pin 138 cooperates with the top block 137 structure, and the top block 137 moves downward under the tangential force. Figure 5 The upper chuck 131 rotates counterclockwise along the paper surface. The bearing guide groove 136 rotates, so that the stud bearing 135 moves radially outward, driving the hook pin 114 to retract, thereby disengaging from the slot of the hook 115, and the hook pin 114 and the hook 115 are disengaged.

[0086] Specifically, the end face of the hook pin 114 is wedge-shaped. Before the test, the hook disk 113 and the base plate 111 are separated. The hook pin 114 is in a state of extending outward. When the motor 109 lowers the hook disk 113 through the screw rod 110, the hook disk 113 hits the hook 115 during the descent. Due to the wedge-shaped structure of the end face of the hook pin 114, the hook spring 134 is compressed and the hook pin 114 retracts. The hook disk 113 continues to descend until the hook pin 114 extends into the slot of the hook 115, and the hook pin 114 and the hook 115 are clamped with each other. At this time, the motor 109 lifts the hook disk 113 through the screw rod 110, and drives the base plate 111 to rise, and the spring 112 is compressed to accumulate elastic potential energy. It is easy to understand that when impact is required, the cylinder 116 pushes the movable pin 138 downward to quickly impact the top block 137, the upper chuck 131 rotates, the bearing guide groove 136 rotates, so that the stud bearing 135 moves radially inward, driving the hook pin 114 to retract, thereby disengaging from the slot of the hook 115, and the hook pin 114 and the hook 115 are both disengaged. The elastic potential energy of the spring 112 is released, and the impact energy of the impact assembly 105 is provided through the transmission assembly 106.

[0087] In some examples, the energy storage assembly 103 includes a plurality of springs 112, which are arranged around the hook plate 113. When the cylinder 116 drives the hook pin 114 to clamp the hook 115, the hook plate 113 and the base plate 111 are fixedly connected. The motor 109 drives the screw rod 110 to drive, driving the hook plate 113 and the base plate 111 to rise, and the spring 112 is compressed by the base plate 111 and the first fixed plate 107 that are close to each other, and the spring 112 accumulates elastic potential energy. In this embodiment, four springs 112 are provided. As an example and not a limitation, the number of springs 112 can be increased or their stiffness can be changed to meet the impact energy requirements of specific standards or tests.

[0088] In some examples, the energy storage assembly 103 further includes a plurality of guide posts 120. The guide posts 120 are vertically disposed at the bottom of the first fixed plate 107. The free ends of the guide posts 120 are downwardly penetrated on the bottom plate 111. The guide posts 120 are used to guide the bottom plate 111 to move in a vertical direction, and in particular, when the bottom plate 111 moves downward under the action of the spring 112, it must be ensured that the bottom plate 111 moves along a vertical path. Otherwise, the bottom plate 111 is prone to deflection when it moves downward, resulting in impact energy loss, which will seriously affect the test results.

[0089] In some examples, the support assembly 102 includes a plurality of vertical plates 121 and a third fixing plate 122. The first fixing plate 107, the second fixing plate 108 and the third fixing plate 122 are disposed on the vertical plates 121. The cylinder 116 is disposed on the third fixing plate 122. The support assembly 102 is used to provide a stable structure to support the energy storage assembly 103, the release assembly 104 and the impact assembly 105.

[0090] In some examples, the bottom plate 111 , the first fixing plate 107 , the second fixing plate 108 , and the third fixing plate 122 are arranged in parallel.

[0091] In some examples, the impact device 100 further includes a guide tube 123, which is vertically disposed on the bottom surface of the second fixing plate 108, and the guide tube 123 is sleeved on the punch guide column 118. The inner diameter of the guide tube 123 is slightly larger than that of the punch guide column 118, so that the impact assembly 105 is guided in the vertical direction. Under the constraint and guidance of the guide tube 123, the impact assembly 105 can accurately impact in the vertical direction, avoiding directional deviation or shaking during the impact process. Ensure the effective transmission of impact energy and ensure the stability and reliability of the impact process.

[0092] In some examples, the transmission assembly 106 further includes a bearing seat 124, which is disposed on the base 101, and the lever 119 is disposed on the bearing seat 124. The lever 119 can smoothly rotate around the bearing seat 124 during the movement, effectively transmitting the kinetic energy released by the spring 112. The materials of the lever 119 and the bearing seat 124 have sufficient strength and rigidity to ensure durability during long-term use.

[0093] Preferably, a pulley 125 is provided at the top of the other end of the lever 119, and a buffer block 126 is provided at the bottom of the punch guide column 118. The buffer block 126 has good elasticity and buffering performance, and can effectively absorb and disperse the impact force. When one end of the lever 119 is impacted, the other end drives the pulley 125 to move upward to hit the buffer block 126. That is to say, when the pulley 125 converts the movement of the lever 119 into energy transfer, the buffer block 126 plays a transitional role. The buffer block 126 receives the energy from the pulley 125, and then transfers the energy to the impact assembly 105 in a relatively gentle and stable manner. In addition, the buffer block 126 can ensure that the impact head 117 has sufficient stroke, and offset the energy when the impact head 117 falls and rebounds, so as to prevent the impact assembly 105 from being damaged by secondary rebound impact. Through such a design, the pulley 125 and the buffer block 126 work together, so that the kinetic energy of the lever 119 can be smoothly converted into the energy of the vertical upward movement of the punch guide column 118, and safely and effectively transmitted to the entire impact assembly 105, thereby ensuring that the entire device can work in the expected manner and achieve a precise impact effect.

[0094] In some examples, the impact device 100 further includes a velocimeter frame 127 and a laser velocimeter 128, wherein the laser velocimeter 128 is disposed on the velocimeter frame 127. The position of the velocimeter frame 127 is adjusted so that the ascending path of the impact head 117 passes through the measuring range of the laser velocimeter 128, thereby obtaining the impact velocity of the impact head 117. Preferably, the height of the velocimeter frame 127 is adjustable so as to adjust the measuring position of the laser velocimeter 128.

[0095] In some examples, a level bubble 129 is provided on the base 101 for adjusting the level of the base 101. A plurality of universal wheels 130 are also provided at the bottom of the base 101 to facilitate moving the impact device 100.

[0096] The operation process of the impact device 100 of the present invention will be described in detail below with reference to the accompanying drawings.

[0097] Place the impact device 100 at a proper position, level the level bubble 129 on the base 101, place the speed meter stand 127 and the laser speed meter 128 at a proper position, and adjust the height of the laser speed meter 128;

[0098] The motor 109 is started, and the motor 109 drives the screw rod 110 to rotate and drop the hook plate 113, and the cylinder 116 is actuated to make the hook pin 114 clamp the hook 115 of the bottom plate 111;

[0099] The servo motor 109 rotates the screw rod 110 in the opposite direction, lifting the hook plate 113 upward, and the hook plate 113 drives the bottom plate 111 to move upward synchronously, compressing the spring 112 and accumulating elastic potential energy;

[0100] The cylinder 116 is actuated, the hook pin 114 is disengaged from the hook 115, the elastic potential energy of the spring 112 is released, the bottom plate 111 moves vertically downward through the guide column 120, driving one end of the lever 119 to move downward rapidly, and the other end to move upward accordingly, the pulley 125 hammers the buffer quickly, and the impact assembly 105 moves upward, and the movement speed of the impact head 117 is tested at this time;

[0101] Record the height of the stretching base plate 111 of the motor 109 and the speed of the impact head 117, and adjust the height of the stretching base plate 111 according to the test requirements so that the impact head 117 reaches the target speed;

[0102] Move the impact device 100 to the weak position at the bottom of the power battery pack, adjust the level bubble 129 of the base 101 to be level, and then perform the impact test.

[0103] It should be noted that the impact test also includes monitoring the temperature of the bottom shell of the power battery pack and observing it for 2 hours at the test environment temperature to monitor the leakage of the power battery pack. After the observation, the deformation of the bottom of the battery pack is measured.

[0104] The impact device provided by the present invention has the following advantages:

[0105] 1. The overall structure is compact, ensuring that the impact component moves vertically upward accurately, improving the accuracy of the impact position.

[0106] 2. Based on the mass of the impact component and the impact head speed, it is convenient to calculate the impact energy. Or adjust the impact head speed according to the impact energy required by the test.

[0107] 3. Through the cooperation of the transmission component, the pulley and the buffer block, the problem of secondary impact caused by the fall of the impact component can be avoided.

[0108] It will be apparent to those skilled in the art that various modifications and variations may be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. An impact device, suitable for impact testing of the bottom of a power battery pack, comprising: Base; A bracket assembly, arranged on the base, comprising a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are arranged above the base; The energy storage assembly comprises a motor, a screw rod, a bottom plate, a spring and a hook plate, wherein the motor is arranged on the first fixing plate, the screw rod is arranged vertically and passes through the first fixing plate upward, the screw rod is threadedly matched with the hook plate, the top of the spring is fixed on the bottom surface of the first fixing plate, and the bottom of the spring is fixed on the top surface of the bottom plate, and the motor is used to drive the screw rod to rotate so as to make the hook plate rise or fall; the hook plate is provided with a hook pin, and the bottom plate is provided with a hook; A release assembly, comprising a cylinder disposed on the bracket assembly, the cylinder being used to control the action of the hook pin so that the hook pin releases the hook; An impact assembly, comprising an impact head and a punch guide column, wherein the impact head is arranged on the top of the punch guide column, and the punch guide column is vertically penetrated on the second fixing plate; The transmission assembly comprises a lever, one end of which is movably connected to the bottom of the base plate, and the other end of which is located below the impact assembly.

2. The impact device according to claim 1, characterized in that The energy storage assembly includes a plurality of springs arranged around the hook disk. When the hook pin clamps the hook, the motor drives the screw rod to rotate, driving the hook disk and the bottom plate to rise, so that the springs accumulate elastic potential energy.

3. The impact device according to claim 1, characterized in that The energy storage assembly also includes a plurality of guide columns vertically arranged at the bottom of the first fixed plate, the free ends of the guide columns are downwardly penetrated through the bottom plate, and the guide columns are used to guide the bottom plate to move in a vertical direction.

4. The impact device according to claim 1, characterized in that The support assembly includes a plurality of vertical plates and a third fixing plate, the first fixing plate, the second fixing plate and the third fixing plate are arranged on the vertical plates; the cylinder is arranged on the third fixing plate.

5. The impact device according to claim 4, characterized in that The bottom plate, the first fixing plate, the second fixing plate and the third fixing plate are arranged in parallel.

6. The impact device according to claim 4, characterized in that The impact device also includes a guide tube, which is vertically arranged on the bottom surface of the second fixing plate, and the guide tube is sleeved on the punch guide column.

7. The impact device according to claim 1, characterized in that The transmission assembly also includes a bearing seat, which is arranged on the base, and the lever is arranged on the bearing seat.

8. The impact device according to claim 7, characterized in that A pulley is provided at the top of the other end of the lever, and a buffer block is provided at the bottom of the punch guide column; After one end of the lever is impacted, the other end drives the pulley to move upward to hit the buffer block.

9. The impact device according to claim 1, characterized in that: It also includes a speedometer frame and a laser speedometer, wherein the laser speedometer is arranged on the speedometer frame; The position of the velocimeter frame is adjusted so that the laser velocimeter can measure the impact velocity of the impact head.

10. The impact device according to claim 1, characterized in that A level bubble is arranged on the base for adjusting the level of the base; a plurality of universal wheels are also arranged at the bottom of the base.

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