CN114486143A - Drop test device - Google Patents
Drop test device Download PDFInfo
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- CN114486143A CN114486143A CN202111660285.8A CN202111660285A CN114486143A CN 114486143 A CN114486143 A CN 114486143A CN 202111660285 A CN202111660285 A CN 202111660285A CN 114486143 A CN114486143 A CN 114486143A
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- 238000012360 testing method Methods 0.000 title claims abstract description 220
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000012780 transparent material Substances 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 21
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 21
- 241001330002 Bambuseae Species 0.000 abstract description 21
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 21
- 239000011425 bamboo Substances 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000013522 software testing Methods 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application provides a drop test device, which comprises a bracket, wherein a rotating assembly is arranged on the bracket, and the rotating assembly is provided with a rotating part; the testing cylinder is connected with the rotating part and at least provided with a loading and unloading opening, and the testing cylinder also comprises a cover sealing part which can open or close the loading and unloading opening; the rotating part can drive the test section of thick bamboo and rotate, makes and falls in the test section of thick bamboo through the part that awaits measuring that loading and unloading opening got into in the test section of thick bamboo. This application is through placing the product in the test section of thick bamboo to make the upset of test section of thick bamboo through the rotating part, and then make the product fall in the test section of thick bamboo, under the circumstances that the test section of thick bamboo upset is many times, can realize the product and fall the test process, reduced human operation, make the falling test device of this application provide the advantage for improving the efficiency that the product falls the test.
Description
Technical Field
The application belongs to the technical field of drop test, and particularly relates to a drop test device.
Background
The product drop test is an important test item for testing the product performance and is an important part of the whole machine test item. The conventional drop test project needs to lift the product to a certain height, for example, a height of 30cm, then drop the product, and repeat the product dropping process at least two times.
However, the whole process of the product drop test is completed through manual operation, the product needs to be picked up by a person to a certain height, then the hand is loosened to drop the product, then the same product is picked up again and dropped, and the actions are repeated according to needs. The efficiency of the product drop test is low, the productivity per unit time is reduced, the operation fatigue of an operator is easily caused in the process, and the satisfaction degree of the operator is reduced.
Disclosure of Invention
The application aims at providing a drop test device, and solves the problem that the existing product drop test is low in efficiency.
The application provides a drop test device, includes:
the rotary component is arranged on the bracket and provided with a rotary part;
the test cylinder is connected with the rotating part and at least provided with a loading and unloading opening, and the test cylinder further comprises a sealing cover part corresponding to the loading and unloading opening on the test cylinder, and the sealing cover part can open or close the loading and unloading opening;
the test cartridge has a first end and a second end, the test cartridge being in a first state when the first end of the test cartridge is above the second end of the test cartridge in the vertical direction; the test cartridge is in a second state when the second end of the test cartridge is above the first end of the test cartridge;
the rotating part can drive the test tube switches between the first state and the second state, and the part to be tested who passes through the loading and unloading opening entering in the test tube falls in the test tube.
Optionally, the first end and the second end of the test cartridge each have an end opening located on the centerline of the test cartridge, and the end openings of the first end and the second end of the test cartridge are both the loading and unloading openings.
Optionally, the test cartridge further comprises a reset portion, and the cover sealing portion is rotatably disposed on the test cartridge through the reset portion and close to the corresponding loading and unloading opening;
when the cover part is under the external force, the reset part deforms, and the cover part opens the loading and unloading opening; when the cover closing part releases the external force, the reset part resets, and the cover closing part blocks the loading and unloading opening.
Optionally, the drop test device further comprises a propping assembly corresponding to the reset portion, the propping assembly is arranged on the bracket, the propping assembly can prop the reset portion, and the cover sealing portion opens the loading and unloading opening in a state that the propping assembly props the reset portion.
Optionally, the abutting assembly is arranged on the support through a movable seat, the support is provided with a guide rail, the movable seat is provided with a sliding block, the sliding block is located in the guide rail, and the sliding block can slide in the guide rail and can be locked at any position in the guide rail.
Optionally, the cover portion comprises;
a first portion that blocks a loading and unloading opening of the test cartridge;
the second part extends from the first side of the first part along the radial direction of the test cylinder, and the abutting component abuts against the second part of the sealing cover part.
Optionally, an edge of a second side of the first portion opposite the first side is flush with a portion of an edge of the loading and unloading opening of the test cartridge.
Optionally, the rotating part drives the test cartridge to rotate in a vertical plane, the rotation axis of the rotating part is opposite to the middle of the test cartridge, and the extension line of the rotation axis of the rotating part passes through the center line of the test cartridge.
Optionally, a clamping portion is fixedly arranged on the rotating portion, the clamping portion clamps the test cartridge, and the clamping portion and the rotation axis of the rotating portion are staggered.
Optionally, the material of the test cartridge is a transparent material.
The technical effect of application lies in, through placing the product in the test section of thick bamboo to make the test section of thick bamboo upset through the rotating part, and then make the product fall in the test section of thick bamboo, under the circumstances that the test section of thick bamboo upset is many times, can realize the product and fall the test process, reduced human operation, make the falling test device of this application provide the advantage for improving the efficiency that the product falls the test.
Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a perspective view of a drop test apparatus provided herein at a first angle;
FIG. 2 is a second angle perspective view of a drop test apparatus provided herein;
FIG. 3 is a perspective view of the bracket;
FIG. 4 is a perspective view of a test cartridge;
FIG. 5 is a perspective view of the closure portion;
fig. 6 is a perspective view of the reset portion.
Reference numerals:
1. a support; 2. a rotating assembly; 3. a rotating part; 4. a test cartridge; 5 loading and unloading the opening; 6. a capping portion; 61. a first portion; 62. a second portion; 7. a reset section; 8. a butting component; 9. a guide rail; 10. A clamping portion.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The application provides a drop test device, including support 1 and test section of thick bamboo 4. The support 1 plays a supporting role in the whole drop test and is used for supporting at least part of components in the drop test device. The support leg may comprise a base and a support frame fixedly arranged on the base, and at least part of the components of the drop test device are arranged on the support frame. The support 1 is provided with a rotating assembly 2, and the rotating assembly 2 is provided with a rotating part 3. The rotating assembly 2 may be a power unit including a rotating motor or a rotating cylinder, and the rotating assembly 2 may be provided with rotating power, and the rotating portion 3 may be a member circumferentially fixed to a power output end of the power unit, so that the rotating portion 3 may rotate under the action of the power unit.
Or the rotating assembly 2 may include a power member that does not provide a rotational power, and the rotating portion 3 is connected to the rotating portion 3 through an intermediate assembly, so that the rotating portion 3 rotates. For example, the middle part subassembly can be for the gear and the rack of mutually supporting, and the power spare provides sharp reciprocating motion for the rack, and then drives gear revolve, and gear and rotating part 3 fixed connection provide rotary power for rotating part 3. The gear may be the rotating portion 3.
The test cartridge 4 is connected to the rotating portion 3, for example, the test cartridge 4 is fixedly connected to the rotating portion 3 through a connecting member such as a screw, so that the test cartridge 4 can rotate along with the rotating portion 3. The test cartridge 4 has at least one loading and unloading opening 5 for placing a product to be tested into the test cartridge 4 through the loading and unloading opening 5. The loading and unloading opening 5 can be provided in the side wall of the test cartridge 4. The test cartridge 4 further includes a cap portion 6 corresponding to the attachment/detachment opening 5 of the test cartridge 4, and the cap portion 6 is capable of opening or closing the attachment/detachment opening 5. The cover part 6 can open the loading and unloading opening 5, that is, the cover part 6 can be separated from the edge of the loading and unloading opening 5 on the test cylinder 4, so that the loading and unloading opening 5 is exposed to the external environment, and the product can be conveniently placed into the test cylinder 4 through the loading and unloading opening 5. The cap portion 6 can close the loading and unloading opening 5, that is, the cap portion 6 can contact with the edge of the loading and unloading opening 5 on the testing cylinder 4, so that the loading and unloading opening 5 is covered by the cap portion 6, and the product for testing in the testing cylinder 4 can be prevented from being released from the testing cylinder 4. The cap portion 6 may be in removable communication with the test cartridge 4.
The test cartridge 4 has a first end and a second end, and when the first end of the test cartridge 4 is above the second end of the test cartridge 4 in the vertical direction, the test cartridge 4 is in the first state, that is, the test cartridge 4 is in the vertical state in the first state, the first end of the test cartridge 4 is above and the second end of the test cartridge 4 is below. When the second end of the test cartridge 4 is above the first end of the test cartridge 4, the test cartridge 4 is in the second state, i.e. the test cartridge 4 is also in the vertical state in the second state, but the second end of the test cartridge 4 is above and the first end of the test cartridge 4 is below. I.e. the test cartridge 4 moves from the vertical initial state to the inverted state, i.e. the first state of the test cartridge 4 changes into the second state of the test cartridge 4.
The rotating part 3 can drive the test tube 4 to be switched between a first state and a second state, so that the test tube 4 is dropped from a part to be tested, which enters the test tube 4 through the loading and unloading opening 5. Specifically, after the product is placed into the testing cylinder 4, the product is located at the bottom end of the testing cylinder 4, and the rotating part 3 drives the testing cylinder 4 to rotate and invert, so that the testing cylinder 4 is changed from the first state to the second state. In the above process, the product changes from being at the bottom end of the test cartridge 4 to being at the top end of the test cartridge 4, and then the product falls freely, completing a fall. Subsequently, the rotation part drives the test tube 4 to change from the second state to the first state, and the product in the test tube 4 falls again to finish falling for the second time. The number of drops of product in the test cartridge 4 can be determined according to the number of drops required for the drop test.
It should be noted that, the speed that the rotating part 3 drives the testing cylinder 4 to rotate is fast, and the product located at the bottom of the testing cylinder 4 is contacted with the end part of the testing cylinder 4 all the time before the product falls down due to inertia, and the product cannot slide along with the cylinder wall of the testing cylinder 4 in the rotation process of the testing cylinder 4. When the test cartridge 4 completes the state transition, the product begins to fall freely.
This application is through placing the product in test section of thick bamboo 4 to make 4 upsets of test section of thick bamboo through rotating part 3, and then make the product fall in test section of thick bamboo 4, under the circumstances that 4 upsets of test section of thick bamboo are many times, can realize the drop test process of product, reduced human operation, make the drop test device of this application provide the advantage for improving the efficiency that the product falls the test.
Optionally, the first end and the second end of the test cartridge 4 each have an end opening located on the centerline of the test cartridge 4, and the end openings of the first end and the second end of the test cartridge 4 are both the loading and unloading openings 5. Specifically, the test tube 4 may have a hollow structure penetrating along a center line, and the openings in the end surfaces of the two ends of the test tube 4 may be end openings. The test cartridge 4 may have a cylindrical structure, a prismatic structure, or the like. The number of the loading and unloading openings 5 is two, the loading and unloading openings are arranged at two ends of the test cylinder 4, the test cylinder 4 is vertically placed, then the loading and unloading openings 5 at the upper end of the test cylinder 4 are opened, products are placed in the test cylinder, and then the test cylinder can fall down once. When the test cartridge 4 changes state, for example, from the first state to the second state, the product has undergone a second drop. This can further improve test efficiency, save test duration.
Optionally, the testing cylinder 4 further comprises a reset portion 7, and the cover portion 6 is rotatably disposed on the testing cylinder 4 near the corresponding loading and unloading opening 5 through the reset portion 7. For example, one side of the reset portion 7 is fixedly disposed on the outer sidewall of the test cartridge 4 near the loading/unloading opening 5, and one side of the reset portion 7 is fixedly disposed on the cap portion 6. Reset portion 7 has a posture of always establishing, works as reset portion 7 receives under the condition of external force deformation, reset portion 7 produces deformation, becomes the atress gesture by the posture of always establishing, when reset portion 7's external force was relieved, the installation department can be recovered to the posture of always establishing by oneself by the atress gesture. The reset portion 7 may be a self-resetting component, for example, the reset portion 7 may be a self-resetting hinge or a self-resetting hinge.
When the cover part 6 is under external force, the reset part 7 deforms, and the cover part 6 opens the loading and unloading opening 5; in a state where the cap portion 6 releases the external force, the reset portion 7 is reset, and the cap portion 6 closes the attachment/detachment opening 5. That is, when the cap section 6 closes the attachment/detachment opening 5, the reset section 7 connecting the cap section 6 and the test cartridge 4 is in a permanent posture. When the cover part 6 is subjected to external force to change position, the reset part 7 is promoted to deform to a stressed posture, and at the moment, the cover part 6 is displaced, so that the loading and unloading opening 5 is separated from a blocked state and exposed outside. After the external force acting on the cover part 6 is removed, the resetting part 7 is restored to the normally-set posture, and at the moment, the cover part 6 is restored to the state of plugging the loading and unloading opening 5 under the driving of the resetting part 7. This embodiment can be convenient put into test section of thick bamboo 4 with the product, also can be convenient shift out test section of thick bamboo 4 with the product simultaneously, further improved efficiency of software testing.
Optionally, the drop test device further includes a propping assembly 8 corresponding to the reset portion 7, the propping assembly 8 is disposed on the bracket 1, the propping assembly 8 can prop against the reset portion 7, and the capping portion 6 opens the loading and unloading opening 5 in a state that the propping assembly 8 props against the reset portion 7.
That is, the abutting component 8 can abut against the resetting portion 7, so that the resetting portion 7 is displaced by an external force. When the reset part 7 at the upper end of the test cylinder 4 is shifted, the loading and unloading opening 5 at the upper end of the test cylinder 4 is separated from the blocked state, so that a product can be conveniently placed into the test cylinder 4 for drop test. Meanwhile, after the drop test is finished, when the reset part 7 at the lower end of the test cylinder 4 is shifted through the abutting component 8, the loading and unloading opening 5 at the lower end of the test cylinder 4 is separated from the blocked state, so that a product in the test cylinder 4 can automatically drop out of the test cylinder 4 from the test cylinder 4. This embodiment can avoid relying on the manpower to make closing cap portion 6 aversion, has further improved efficiency of software testing.
The abutting component 8 may be a linear output component, such as a linear motor or a linear cylinder, and an execution end of the linear output component can abut against the capping portion 6, so that the capping portion 6 is acted by an external force. The abutting assembly 8 may also include a cam mechanism including a rotatable cam that can abut against the capping portion 6 during rotation by virtue of a portion of the cam that protrudes therefrom. Of course, the abutting assembly 8 may have other structures, which are not described in detail herein.
Optionally, the abutting assembly 8 is arranged on the support 1 through a movable seat, the support 1 is provided with a guide rail 9, the movable seat is provided with a sliding block, the sliding block is located in the guide rail 9, and the sliding block can slide in the guide rail 9 and can be locked at any position in the guide rail 9. The embodiment can change the position of the abutting assembly 8 under the action of the movable seat, further change the relative position between the abutting assembly 8 and the sealing cover part 6, enable the abutting assembly 8 to just abut against the sealing cover part 6, enable the loading and unloading opening 5 of the testing cylinder 4 to be separated from a blocking state, and enable the abutting assembly 8 not to interfere with the action of the testing cylinder 4. The overall coordination of the application is ensured.
Optionally, the cover 6 comprises a first part 61 and a second part 62. The first portion 61 closes off the loading and unloading opening 5 of the test cartridge 4, i.e. the first portion 61 is opposite to the loading and unloading opening 5 of the test cartridge 4 and mainly serves to receive the test product. The second portion 62 extends from the first side of the first portion 61 in the radial direction of the test cartridge 4, and the abutting assembly 8 abuts against the second portion 62 of the cover 6. Namely, the second portion 62 corresponds to the resisting component 8 and is mainly used for bearing the stress of the mounting component. The reset portion 7 may be fixedly mounted between the first and second portions 61, 62 of the cover portion 6. The cover sealing part 6 in the embodiment has reasonable structural design, can reliably open or seal the loading and unloading opening 5, and is favorable for ensuring that the drop test device can reliably work.
The cover 6 is provided with a flexible pad, such as silicone rubber, on the side facing the product, which can prevent the product from being scratched. Further, the flexible pad may be provided on the first portion 61 of the cover part 6.
Optionally, the edge of a second side of first portion 61 opposite to the first side is flush with a portion of the edge of loading and unloading opening 5 of test cartridge 4. That is, the shape and size of the second side of the first portion 61 are the same as those of the edge of the portion of the test cartridge 4 where the opening 5 is attached and detached, so that waste of materials can be avoided, cost can be saved, and the space occupied by the cap 6 during operation can be reduced.
Optionally, the rotating part 3 drives the test cartridge 4 to rotate in a vertical plane, so that the test cartridge 4 is simple and direct to rotate, for example, the test cartridge 4 is rotated by one hundred eighty degrees to change the first state of the test cartridge 4 into the second state. The rotation axis of the rotating part 3 is opposite to the middle of the test cartridge 4, and the extension line of the rotation axis of the rotating part 3 passes through the center line of the test cartridge 4. Can make test section of thick bamboo 4 rotate the in-process, the bilateral structure symmetry at the rotation center of test section of thick bamboo 4 makes the centrifugal force that the product received in rotating keep unanimous, reduces the influence of product rotation in-process atress is avoided appearing in test section of thick bamboo 4, and the condition that the centrifugal force that the product received is different when the state switches many times.
Optionally, a clamping portion 10 is fixedly disposed on the rotating portion 3, the clamping portion 10 clamps the testing cylinder 4, the clamping portion 10 is offset from the rotation axis of the rotating portion 3, and when the testing cylinder 4 is mounted on the clamping portion 10, the relative position relationship between the testing cylinder 4 and the rotating portion 3 can be conveniently ensured through observation. For example, the rotation axis of the rotary unit 3 is opposite to the middle of the test cartridge 4, and the extension line of the rotation axis of the rotary unit 3 passes through the center line of the test cartridge 4.
Optionally, the material of the test tube 4 is transparent, so that an operator can observe the falling condition of the product in the test tube 4 conveniently. The whole drop test process is convenient for an operator to monitor.
Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.
Claims (10)
1. A drop test device, comprising:
the rotary component is arranged on the bracket and provided with a rotary part;
the test cylinder is connected with the rotating part and at least provided with a loading and unloading opening, and the test cylinder further comprises a sealing cover part corresponding to the loading and unloading opening on the test cylinder, and the sealing cover part can open or close the loading and unloading opening;
the test cartridge has a first end and a second end, the test cartridge being in a first state when the first end of the test cartridge is above the second end of the test cartridge in the vertical direction; the test cartridge is in a second state when the second end of the test cartridge is above the first end of the test cartridge;
the rotating part can drive the test tube switches between the first state and the second state, and the part to be tested who passes through the loading and unloading opening entering in the test tube falls in the test tube.
2. The drop test device of claim 1, wherein the first end and the second end of the test cartridge each have an end opening located on the centerline of the test cartridge, the end openings of the first end and the second end of the test cartridge each being the loading and unloading opening.
3. The drop test device according to claim 2, wherein the test cartridge further comprises a reset portion, and the capping portion is rotatably disposed on the test cartridge near the corresponding loading and unloading opening through the reset portion;
when the cover part is under the external force, the reset part deforms, and the cover part opens the loading and unloading opening; when the cover closing part releases the external force, the reset part resets, and the cover closing part blocks the loading and unloading opening.
4. The drop test device according to claim 3, further comprising a propping assembly corresponding to the reset portion, wherein the propping assembly is disposed on the bracket and can prop against the reset portion, and the capping portion opens the loading and unloading opening in a state where the propping assembly props against the reset portion.
5. The drop test device according to claim 4, wherein the abutting assembly is arranged on the bracket through a movable seat, the bracket is provided with a guide rail, the movable seat is provided with a sliding block, the sliding block is positioned in the guide rail, and the sliding block can slide in the guide rail and can be locked at any position in the guide rail.
6. The drop test device of claim 4, wherein the cover portion comprises;
a first portion that blocks a loading and unloading opening of the test cartridge;
the second part extends from the first side of the first part along the radial direction of the test cylinder, and the abutting component abuts against the second part of the sealing cover part.
7. The drop test device of claim 6, wherein a rim of a second side of the first portion opposite the first side is flush with a portion of a rim of a loading and unloading opening of the test cartridge.
8. The drop test device according to any one of claims 1 to 7, wherein the test cartridge is rotated by the rotating part in a vertical plane, the rotation axis of the rotating part is opposite to the middle part of the test cartridge, and an extension line of the rotation axis of the rotating part passes through the center line of the test cartridge.
9. The drop test device of claim 8, wherein the rotating portion is fixedly provided with a clamping portion that clamps the test cartridge, the clamping portion being offset from the axis of rotation of the rotating portion.
10. The drop test device of any one of claims 1-7, wherein the test cartridge is made of a transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660285.8A CN114486143A (en) | 2021-12-30 | 2021-12-30 | Drop test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660285.8A CN114486143A (en) | 2021-12-30 | 2021-12-30 | Drop test device |
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| Publication Number | Publication Date |
|---|---|
| CN114486143A true CN114486143A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111660285.8A Pending CN114486143A (en) | 2021-12-30 | 2021-12-30 | Drop test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115902665A (en) * | 2023-03-13 | 2023-04-04 | 中能建储能科技(武汉)有限公司 | Electricity core security performance testing arrangement |
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