Simulation device
By combining the dynamic adjustment of the first and second drive components with the brake, the problem of insufficient drive component stroke was solved, and the stability of the driving force and the controllability of the test were achieved in the simulation device, meeting the simulation requirements of the standard waveform.
Patent Information
- Application Number
- CN202422741426.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In existing simulation devices, the maximum stroke of the drive component cannot meet the stroke requirements of the worktable, resulting in unstable driving force and difficulty in simulating standard waveforms.
The test piece uses first and second impact modules and combines first and second drive components. Through dynamic adjustment of the brake, the acceleration of the test piece conforms to the standard waveform. The drive component has a short stroke but stable driving force.
It enables the simulation of standard waveforms with a relatively small stroke of the drive component, ensuring the stability of the driving force, shortening the length of the device, and improving the controllability of the test.
Smart Images
Figure CN223485508U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile crash testing technology, and in particular to a simulation device. Background Technology
[0002] In crash tests of new energy vehicles, it is necessary to rely on simulation devices to ensure that the relationship between time and acceleration of the test component meets the standard waveform during the test. After the test, the state of the test component is observed, such as if the test component is a dummy or a safety seat.
[0003] Simulation devices often require a driving component that can generate impact force to achieve the initial acceleration of the test piece. The standard waveform is plotted with time on the x-axis and acceleration on the y-axis. In the early stages, the force of the driving component needs to be gradually increased to ensure that the acceleration of the test piece gradually increases. During this process, the output end of the driving component needs to be in constant contact with the worktable. During braking, the output end of the driving component is also in contact with the worktable. The worktable has a large stroke, and the maximum stroke of the driving component often cannot meet the stroke requirements of the worktable. Using a driving component with a large stroke results in a longer extension distance of the driving component and unstable driving force.
[0004] Therefore, there is an urgent need to design a simulation device to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a simulation device that can use a drive component with a small stroke to simulate a standard waveform and ensure the stability of the driving force during the simulation process.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] The simulation device includes a first impact module and a second impact module, wherein the first impact module includes:
[0008] A first guide rail and a first worktable, wherein the first worktable and the first guide rail slide in a preset direction;
[0009] The first driving component can drive the first worktable to move along the preset direction.
[0010] The first brake is configured to lock or release the aforementioned first worktable;
[0011] The aforementioned second impact module includes:
[0012] The second guide rail and the second worktable are slidably engaged in the second guide rail in the preset direction, and the test piece is installed on the second worktable.
[0013] The second driving component is installed on the first worktable and can drive the second worktable to move in the preset direction.
[0014] The second brake is installed on the first worktable and is configured to lock or release the second worktable.
[0015] As an optional solution, the first driving component includes a first driving body and a first impact head, wherein the first impact head is detachably connected to the output end of the first driving body; and / or
[0016] The second driving component includes a second driving body and a second impact head, wherein the second impact head is detachably connected to the output end of the second driving body.
[0017] As an optional solution, a first limiting member is installed at the end of the first guide rail opposite to the first driving member; and / or
[0018] A second limiting member is installed at the end of the second guide rail that is opposite to the second driving member.
[0019] As an optional solution, the first limiting member is provided with a buffer portion; and / or
[0020] The aforementioned second limiting member is provided with a buffer section.
[0021] As an optional option, the first workbench and the second workbench are made of aluminum.
[0022] As an alternative, the test piece is equipped with an accelerometer.
[0023] As an optional solution, a threaded hole is provided on the second worktable, and a threaded sleeve is inserted into the threaded hole for mounting the test piece.
[0024] As an optional solution, the first brake is located on the side of the first worktable; and / or
[0025] The second brake is located on the side of the second worktable.
[0026] As an optional solution, after the second driving component pushes the second worktable, the first driving component pushes the first worktable after a preset time interval.
[0027] As an optional solution, the aforementioned first driving component can switch between a charging state and an impact state; and / or
[0028] The aforementioned second driving component can switch between a power storage state and an impact state.
[0029] The beneficial effects of this utility model are as follows:
[0030] This invention provides a simulation device. During the simulation test, the output end of the first driving component is spaced apart from the first worktable and is in a charging state. The output end of the second driving component is spaced apart from the second worktable and is in a charging state. When the control system issues a command, the output end of the second driving component extends and pushes the second worktable, causing the test piece to slide along the direction of the second guide rail. During this process, the second brake adjusts the clamping force, and together with the second driving component, applies force to the second worktable to ensure that the acceleration of the test piece increases at a constant speed. After a preset time, the output end of the first driving component extends and pushes the first worktable along the first guide rail. The sliding direction means that when the first driving component applies a pushing force to the first worktable, it also indirectly applies a pushing force to the test piece. Therefore, even if the driving stroke of the second driving component reaches its maximum value, the first driving component can still be used to continue pushing the test piece to complete the subsequent testing work. The clamping force is adjusted by the first brake so that the test piece meets the standard waveform in the subsequent test. During the entire testing process, the first driving component and the second driving component are used in combination. The driving length of both is not very long. On the one hand, it shortens the length occupied by the entire device. On the other hand, the extension length of the driving component is within a controllable range, and the driving force is relatively stable. Attached Figure Description
[0031] Figure 1 This is a standard waveform provided in an embodiment of this utility model;
[0032] Figure 2 This is a schematic diagram of the simulation device provided in an embodiment of the present invention.
[0033] In the picture:
[0034] 10. First impact module; 11. First guide rail; 12. First worktable; 13. First driving component; 131. First driving body; 132. First impact head; 14. First brake; 15. First limiting component;
[0035] 20. Second impact module; 21. Second guide rail; 22. Second worktable; 23. Second drive component; 231. Second drive body; 232. Second impact head; 24. Second brake; 25. Second limit component; 200. Test piece. Detailed Implementation
[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0039] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0040] In crash tests of new energy vehicles, simulation devices are needed to ensure that the relationship between time and acceleration of the test component 200 during the test meets certain conditions. Figure 1 The standard waveform shown often requires a driving component capable of generating impact force to achieve the initial acceleration of the test piece 200. The standard waveform is plotted with time on the horizontal axis and acceleration on the vertical axis. In the early stages, the force of the driving component needs to be gradually increased to ensure that the acceleration of the test piece 200 gradually increases. During this process, the output end of the driving component needs to be in constant contact with the worktable. During braking, the output end of the driving component is also in contact with the worktable. The worktable has a large stroke, and the maximum stroke of the driving component often cannot meet the stroke requirements of the worktable. Using a driving component with a large stroke results in a longer extension distance of the driving component and unstable driving force.
[0041] To address the aforementioned problems, this embodiment provides a simulation device capable of simulating standard waveforms using a drive component with a relatively small stroke, ensuring the stability of the driving force during the simulation process. For example... Figure 2As shown, the simulation device includes a first impact module 10 and a second impact module 20. The first impact module 10 includes a first guide rail 11, a first worktable 12, a first drive member 13, and a first brake 14. The first worktable 12 is slidably engaged with the first guide rail 11 in a preset direction. The first drive member 13 can drive the first worktable 12 to move in the preset direction. The first brake 14 is configured to lock or release the first worktable 12. The second impact module 20 includes a second guide rail 21, a second worktable 22, a second drive member 23, and a second brake 24. The second worktable 22 is slidably engaged with the second guide rail 21 in a preset direction. The test piece 200 is mounted on the second worktable 22. The second drive member 23 is mounted on the first worktable 12 and can drive the second worktable 22 to move in the preset direction. The second brake 24 is mounted on the first worktable 12 and is configured to lock or release the second worktable 22.
[0042] In the simulation test, the output end of the first drive unit 13 is spaced apart from the first workbench 12 and is in a charging state, while the output end of the second drive unit 23 is spaced apart from the second workbench 22 and is also in a charging state. Upon command from the control system, the second brake 24 releases the second workbench 22, the output end of the second drive unit 23 extends, and pushes the second workbench 22 to move the test piece 200 along the direction of the second guide rail 21. During this process, the second brake 24 adjusts its clamping force, working together with the second drive unit 23 to apply force to the second workbench 22, ensuring that the acceleration of the test piece 200 increases at a constant speed. After a preset time, the output end of the first drive unit 13 extends and pushes the first workbench 22... The platform 12 slides along the direction of the first guide rail 11. That is to say, when the first driving member 13 applies a pushing force to the first worktable 12, it also applies a pushing force to the test piece 200 in a disguised way. Thus, even if the driving stroke of the second driving member 23 reaches its maximum value, the first driving member 13 can still be used to continue to push the test piece 200 to complete the subsequent test work. The clamping force is adjusted by the first brake 14 so that the test piece 200 meets the standard waveform in the subsequent test. During the entire test process, the first driving member 13 and the second driving member 23 are used in combination. The driving length of both is not very long. On the one hand, it shortens the length occupied by the entire device. On the other hand, the extension length of the driving member is within a controllable range, and the driving force is relatively stable.
[0043] In other words, after the second drive component 23 pushes the second worktable 22, the first drive component 13 pushes the first worktable 12 after a preset time interval.
[0044] It should be noted that the first drive component 13, the second drive component 23, the first brake 14, and the second brake 24 are all in a state of dynamic adjustment during the test. The control system will adjust the above components according to the current acceleration state of the test component 200 so that the motion state of the test component 200 conforms to the standard waveform.
[0045] In addition, other standard waveforms can be simulated using this simulation device, without limitation.
[0046] Understandably, the first drive component 13 can switch between a charging state and an impact state; the second drive component 23 can also switch between a charging state and an impact state. The charging state of the first drive component 13 lasts longer than that of the second drive component 23 because the first drive component 13 initiates its impact later.
[0047] Optionally, the test piece 200 is equipped with an acceleration sensor to detect the acceleration of the test piece 200. The control system is connected to the acceleration sensor to control the first drive member 13, the second drive member 23, the first brake 14 and the second brake 24 to make dynamic adjustments.
[0048] In other embodiments, if it is necessary to simulate other standard waveforms, such as the vertical axis being a parameter like velocity, the device under test is equipped with a corresponding velocity sensor, which is not limited here.
[0049] Optionally, such as Figure 2 As shown, the first driving component 13 includes a first driving body 131 and a first impact head 132, with the first impact head 132 detachably connected to the output end of the first driving body 131; the second driving component 23 includes a second driving body 231 and a second impact head 232, with the second impact head 232 detachably connected to the output end of the second driving body 231. With this configuration, the first impact head 132 and the second impact head 232 are consumable parts, facilitating replacement after prolonged use.
[0050] Optionally, the first impact head 132 and the second impact head 232 are made of soft materials such as polyurethane or wood to prevent excessive impact force from damaging the first worktable 12 and the second worktable 22.
[0051] Optionally, such as Figure 2 As shown, a first limiting member 15 is installed at the end of the first guide rail 11 opposite to the first driving member 13, which can prevent the first worktable 12 from derailing due to untimely braking. A second limiting member 25 is installed at the end of the second guide rail 21 opposite to the second driving member 23, which can prevent the second worktable 22 from derailing due to untimely braking.
[0052] Optionally, the first limiting member 15 is provided with a buffer portion (not shown); when the first worktable 12 contacts the first limiting member 15, the deformation of the buffer portion can absorb the impact force, preventing the first worktable 12 from being subjected to excessive force and causing damage. The second limiting member 25 is provided with a buffer portion; when the second worktable 22 contacts the second limiting member 25, the deformation of the buffer portion can absorb the impact force, preventing the second worktable 22 from being subjected to excessive force and causing damage.
[0053] In this embodiment, the first limiting member 15 is block-shaped and made of a soft material, such as polyurethane. The first limiting member 15 serves as a buffer. In other embodiments, a buffer can also be installed on the first limiting member 15 for cushioning, which is not limited here. The second limiting member 25 is similar to the first limiting member 15 and will not be described in detail here.
[0054] Optionally, the first worktable 12 and the second worktable 22 are made of aluminum. This reduces weight, allowing the test piece 200 to achieve greater acceleration under the same impact force.
[0055] Optionally, a threaded hole (not shown) is provided on the second worktable 22, and a threaded sleeve is inserted into the threaded hole for mounting the test piece 200. By using a threaded sleeve, the fixation of the test piece 200 is made more reliable and secure, ensuring that the test piece 200 will not detach from the second worktable 22 when subjected to a large impact force, thereby ensuring the safety of the entire test.
[0056] Optionally, the first brake 14 is located on the side of the first worktable 12, so that the first brake 14 can brake the first worktable 12; the second brake 24 is located on the side of the second worktable 22, so that the second brake 24 can brake the second worktable 22.
[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A simulation device, characterized in that, It includes a first impact module (10) and a second impact module (20), wherein the first impact module (10) includes: The first guide rail (11) and the first worktable (12) are slidably engaged with the first guide rail (11) in a preset direction; The first driving component (13) can drive the first worktable (12) to move along the preset direction; The first brake (14) is configured to lock or release the first worktable (12); The second impact module (20) includes: The second guide rail (21) and the second worktable (22) are slidably engaged with the second guide rail (21) in the preset direction, and the test piece (200) is installed on the second worktable (22). The second driving component (23) is installed on the first worktable (12) and can drive the second worktable (22) to move along the preset direction; A second brake (24) is mounted on the first worktable (12) and configured to lock or release the second worktable (22).
2. The simulation device according to claim 1, characterized in that, The first driving component (13) includes a first driving body (131) and a first impact head (132), wherein the first impact head (132) is detachably connected to the output end of the first driving body (131); and / or The second driving component (23) includes a second driving body (231) and a second impact head (232), and the second impact head (232) is detachably connected to the output end of the second driving body (231).
3. The simulation device according to claim 1, characterized in that, A first limiting member (15) is installed at the end of the first guide rail (11) opposite to the first driving member (13); and / or The second guide rail (21) is equipped with a second limiting member (25) at the end opposite to the second driving member (23).
4. The simulation device according to claim 3, characterized in that, The first limiting member (15) is provided with a buffer part; and / or The second limiting member (25) is provided with a buffer part.
5. The simulation device according to claim 1, characterized in that, The first workbench (12) and the second workbench (22) are made of aluminum.
6. The simulation apparatus according to any one of claims 1-5, characterized in that, An accelerometer is provided on the test piece (200).
7. The simulation apparatus according to any one of claims 1-5, characterized in that, A threaded hole is provided on the second workbench (22), and a threaded sleeve is embedded in the threaded hole. The threaded sleeve is used to install the test piece (200).
8. The simulation apparatus according to any one of claims 1-5, characterized in that, The first brake (14) is located on the side of the first worktable (12); and / or The second brake (24) is located on the side of the second worktable (22).
9. The simulation apparatus according to any one of claims 1-5, characterized in that, After the second drive member (23) pushes the second worktable (22), the first drive member (13) pushes the first worktable (12) after a preset time interval.
10. The simulation apparatus according to any one of claims 1-5, characterized in that, The first drive unit (13) can switch between a power storage state and an impact state; and / or The second drive unit (23) can switch between a power storage state and an impact state.