Vibration generator

Abstract

The utility model discloses a vibration generator, which belongs to the technical field of safety performance testing of initiating explosive devices, aims to accurately simulate a vibration environment possibly suffered by the initiating explosive devices, and comprises a test box, two sides of the test box are oppositely provided with vibration arms, and a transmission plate is arranged between the two vibration arms; a rotary seat is arranged on the vibration table, and the vibration arm is rotationally connected with the rotary seat; the driving assembly is arranged on the vibration table, and the driving assembly is used for being matched with the transmission plate to enable the vibration arm to rotate so as to drive the test box to be switched between the first operation position and the second operation position; when the test box is switched from the first operation position to the second operation position, the driving assembly abuts against the transmission plate so as to enable the vibration arm to rotate, when the test box is switched from the second operation position to the first operation position, the driving assembly is separated from the transmission plate, and the test box falls to the first operation position under the action of the gravity of the test box and impacts the vibration table. And the initiating explosive device to be tested placed in the test box is enabled to vibrate.

Description

Technical Field

[0001] This application belongs to the field of pyrotechnic safety performance testing technology, specifically relating to a vibration generator. Background Technology

[0002] Pyrotechnics are widely used and crucial in numerous fields, including military, aerospace, and mining. The performance and reliability of pyrotechnics directly affect the safety and effectiveness of related systems. Therefore, rigorous testing and experimentation are essential to ensure that pyrotechnics function stably under various complex environments and operating conditions.

[0003] In the testing of pyrotechnic products, simulating the vibration environment they may experience during actual use or transportation is one of the important safety performance testing items. However, under limited laboratory conditions, only manual shaking can be used to roughly simulate the vibration, which cannot guarantee the consistency and repeatability of the vibration, and it is highly dependent on the physical strength and experience of the operator, resulting in low accuracy of the safety performance test results. Utility Model Content

[0004] In view of this, this application provides a vibration generator, the main purpose of which is to accurately simulate the vibration environment that pyrotechnics may suffer during actual use or transportation, and improve the accuracy of the safety performance test results of pyrotechnics.

[0005] To achieve the above objectives, this application mainly provides the following technical solutions:

[0006] This application provides a vibration generator, comprising:

[0007] A test chamber, wherein vibrating arms are arranged opposite each other on both sides of the test chamber, and a transmission plate is arranged between the two vibrating arms;

[0008] A vibration table, wherein a rotary seat is provided on the vibration table, and the vibration arm is rotatably connected to the rotary seat;

[0009] A drive assembly is disposed on the vibration table and is used to cooperate with the transmission plate to rotate the vibration arm so as to drive the test chamber to switch between a first operating position and a second operating position.

[0010] When the test chamber switches from the first operating position to the second operating position, the driving component abuts against the transmission plate to make the vibrating arm rotate. When the test chamber switches from the second operating position to the first operating position, the driving component separates from the transmission plate. The test chamber falls to the first operating position under its own gravity and impacts the vibration table, causing the pyrotechnic item to be tested placed inside the test chamber to vibrate.

[0011] Optionally, the driving component includes:

[0012] The rotating arm has a contact wheel rotatably connected to one end. When the test chamber switches from the first operating position to the second operating position, the contact wheel abuts against the transmission plate and rolls along the transmission plate.

[0013] Optionally, the working space of the boom is the area formed by the orthographic projection of the boom onto the vibration table as the working coverage area, and the working coverage area is provided with a clearance for avoiding the boom.

[0014] Optionally, the vibration generator further includes:

[0015] An adjusting plate is disposed on the side of the transmission plate near the rotating arm. The distance between the adjusting plate and the transmission plate is adjustable. The contact wheel is in contact with and cooperates with the adjusting plate.

[0016] Optionally, a rotating shaft, a first adjusting screw, and a second adjusting screw are sequentially arranged between the adjusting plate and the transmission plate along the rolling direction of the contact wheel. The first adjusting screw passes through the transmission plate and is connected to the adjusting plate. The first adjusting screw is used to lift the adjusting plate. The second adjusting screw passes through the transmission plate and abuts against the adjusting plate. The second adjusting screw is used to push the adjusting plate.

[0017] Optionally, a clearance hole is provided on the transmission plate at a position relative to the first adjusting screw, the first adjusting screw passes through the clearance hole, a first adjusting nut is provided at the end of the first adjusting screw away from the adjusting plate, an elastic element is provided between the first adjusting nut and the transmission plate, a first end of the elastic element abuts against the first adjusting nut, and a second end of the elastic element abuts against the transmission plate.

[0018] Optionally, when the second adjusting screw pushes the adjusting plate, the adjusting plate rotates about the rotating shaft as the center of rotation in a direction away from the transmission plate, so as to deform the elastic element and accumulate elastic potential energy.

[0019] Optionally, when the second adjusting screw moves away from the adjusting plate, the elastic element releases elastic potential energy to drive the adjusting plate to rotate about the rotating axis in a direction closer to the transmission plate.

[0020] Optionally, a through hole is provided on the transmission plate at a position relative to the second adjusting screw, and a second adjusting nut is fixedly provided on the upper surface of the transmission plate at a position relative to the second adjusting screw. The second adjusting screw is threadedly connected to the second adjusting nut and passes through the through hole.

[0021] Optionally, the test chamber is provided with a first test station, a second test station and a third test station. The first test station is used to achieve a horizontal state for the output end of the pyrotechnic device under test. The second test station is used to achieve an upward orientation for the output end of the pyrotechnic device under test. The third test station is used to achieve a downward orientation for the output end of the pyrotechnic device under test.

[0022] By employing the above technical solution, this application has at least the following beneficial effects:

[0023] The vibration generator provided in the embodiments of this application, through the cooperation of the drive component and the transmission plate, and the movement of the test chamber when switching positions, can regularly cause the test chamber to vibrate. Compared with the previous method of relying on manual shaking to simulate the vibration environment suffered by pyrotechnics during actual use or transportation, it can more accurately simulate vibration conditions that conform to reality, ensuring the consistency and repeatability of vibration, and reducing simulation differences caused by different operators. Furthermore, because it can more accurately simulate the vibration environment and reduce human interference, the pyrotechnics placed in the test chamber can be tested under relatively more realistic vibration conditions, effectively improving the accuracy of the safety performance test results of pyrotechnics. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a vibration generator according to an optional embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the adjustment plate according to an optional embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the transmission plate according to an optional embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of a test chamber according to an optional embodiment of this application.

[0028] The reference numerals in the attached figures are as follows:

[0029] 1. Test chamber; 2. Vibrating arm; 3. Transmission plate; 31. Clearance hole; 32. Perforation; 4. Vibration table; 41. Clearance opening; 5. Rotary seat; 6. Drive assembly; 61. Rotating arm; 62. Contact wheel; 7. Adjusting plate; 8. Rotating shaft; 9. First adjusting screw; 10. Second adjusting screw; 11. First adjusting nut; 12. Second adjusting nut; 13. Elastic element. Detailed Implementation

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, 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 application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0034] See also Figures 1 to 4 As shown, according to an embodiment of this application, a vibration generator is provided, comprising: a test chamber 1, with vibrating arms 2 arranged opposite to each other on both sides of the test chamber 1, and a transmission plate 3 arranged between the two vibrating arms 2; a vibration table 4, with a rotary seat 5 arranged on the vibration table 4, and the vibrating arms 2 rotatably connected to the rotary seat 5; and a drive assembly 6, which is arranged on the vibration table 4 and is used to cooperate with the transmission plate 3 to rotate the vibrating arms 2, thereby driving the test chamber 1 to switch between a first operating position and a second operating position; wherein, when the test chamber 1 switches from the first operating position to the second operating position, the drive assembly 6 abuts against the transmission plate 3 to rotate the vibrating arms 2, and when the test chamber 1 switches from the second operating position to the first operating position, the drive assembly 6 separates from the transmission plate 3, and the test chamber 1 falls to the first operating position under its own gravity and impacts the vibration table 4, causing the pyrotechnic item to be tested placed inside the test chamber 1 to vibrate.

[0035] In this embodiment, the drive assembly 6, in conjunction with the transmission plate 3, and the movement of the test chamber 1 as it switches between different positions, can regularly induce vibration in the test chamber 1. Compared to the previous method of manually shaking to simulate the vibration environment experienced by pyrotechnics during actual use or transportation, this method can more accurately simulate vibration conditions that conform to reality, ensuring the consistency and repeatability of vibration and reducing simulation differences caused by different operators. Furthermore, because it can more accurately simulate the vibration environment and reduce human interference, the pyrotechnics placed in the test chamber 1 can be tested under relatively more realistic vibration conditions, effectively improving the accuracy of the pyrotechnics safety performance test results.

[0036] The test chamber 1 is a container used to hold the pyrotechnic device under test. During vibration, it can stably hold the pyrotechnic device and effectively transmit the vibration to the device inside, ensuring that the test results accurately reflect the safety performance of the pyrotechnic device under vibration. In practical applications, the pyrotechnic device under test can be a detonator, etc.

[0037] Vibration arms 2 are mounted opposite each other on both sides of the test chamber 1. In practical applications, the vibration arms 2 are connected to the test chamber 1 and play a transmission role in the entire vibration generation mechanism. Specifically, the vibration arms 2 can flexibly rotate around the rotary seat 5 to realize the switching action of the test chamber 1 between different positions.

[0038] The vibrating arm 2 is fixed relative to the transmission plate 3, which is located between the two vibrating arms 2 and serves as the medium for force transmission between the drive assembly 6 and the vibrating arms 2. In practical applications, the transmission plate 3 is used to stably transmit the driving force generated by the drive assembly 6 to the vibrating arms 2, enabling the vibrating arms 2 to rotate in tandem and ensuring the smoothness and coordination of the test chamber 1's movement.

[0039] Among them, the vibration table 4 is the basic platform of the vibration generator, which is used to provide a stable placement position for components such as the rotary seat 5 and the drive assembly 6.

[0040] The rotary seat 5 can be a bearing housing, etc. In practical applications, the rotary seat 5 is mounted on the vibration table 4 to provide a rotational support point for the vibrating arm 2.

[0041] The drive assembly 6 is also mounted on the vibration table 4 and is used to control the position switching of the test chamber 1. In practical applications, the drive assembly 6 can be a transmission mechanism consisting of a motor, a belt, and a pulley, so that when it cooperates with the transmission plate 3, it can accurately rotate the vibrating arm 2 to a predetermined angle, thereby achieving reliable switching of the test chamber 1 between the first operating position and the second operating position.

[0042] Specifically, when the test chamber 1 needs to be lifted from the first operating position to the second operating position, the drive assembly 6 is activated and comes into contact with the transmission plate 3. The force output by the drive assembly 6 is transmitted to the vibrating arm 2 through the transmission plate 3. Since the vibrating arm 2 is rotatably connected to the rotary seat 5, under the action of this force, the vibrating arm 2 begins to rotate around the rotary seat 5, thereby driving the test chamber 1 to move upward. During this process, the force of the drive assembly 6 needs to overcome the gravity of the test chamber 1 and the frictional resistance during the rotation of the vibrating arm 2, and must lift the test chamber 1 to the second operating position according to a predetermined motion trajectory and speed. When the test chamber 1 reaches the second operating position, the drive assembly 6 separates from the transmission plate 3. At this time, the test chamber 1 loses the upward support force of the drive assembly 6 and begins to fall under its own gravity. Due to the rotatable connection between the vibrating arm 2 and the rotary seat 5, the test chamber 1 will fall along a specific arc trajectory and finally impact the vibration table 4. During the impact, the kinetic energy of the test chamber 1 is transferred to the vibration table 4, while the vibration table 4 also exerts a reaction force on the test chamber 1, causing the pyrotechnic device under test inside the test chamber 1 to vibrate. This vibration process simulates the impact and vibration environment that the pyrotechnic device may suffer during actual transportation or use.

[0043] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 2 As shown, the drive assembly 6 includes a rotating arm 61, one end of which is rotatably connected to a contact wheel 62. When the test chamber 1 switches from the first operating position to the second operating position, the contact wheel 62 abuts against the transmission plate 3 and rolls along the transmission plate 3.

[0044] In this embodiment, when the contact wheel 62 abuts against and rolls with the transmission plate 3, rolling friction replaces the possible sliding friction. It should be noted that the coefficient of friction for rolling friction is much smaller than that for sliding friction. This effectively reduces the friction between the contact wheel 62 and the transmission plate 3 during the process of the drive assembly 6 pushing the transmission plate 3 to rotate the vibrating arm 2, thereby reducing energy loss and allowing the drive assembly 6 to transmit power to the transmission plate 3 more efficiently. Simultaneously, it also reduces wear on the contact wheel 62 and the transmission plate 3, extending their service life.

[0045] Specifically, the drive component 6 can be a belt reduction transmission mechanism, which effectively reduces the high-speed rotation of the motor output through the transmission action of the belt, transmitting power to the rotating arm 61 at a suitable speed and torque. The rotating arm 61, as the actuator of the drive component 6, receives power from the belt reduction transmission mechanism, and its contact wheel 62 interacts with the transmission plate 3. When the test chamber 1 switches from the first operating position to the second operating position, the rotating arm 61 rotates under the drive of the belt reduction transmission mechanism, thereby causing the contact wheel 62 to abut against the transmission plate 3 and roll along the transmission plate 3, thus transmitting power to the transmission plate 3, causing the vibrating arm 2 to rotate, ultimately achieving precise switching of the test chamber 1 between different operating positions. This provides a reliable and stable power transmission and position control guarantee for simulating the vibration environment of pyrotechnics during actual use or transportation.

[0046] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 1 As shown, the area formed by the orthographic projection of the working space of the boom 61 onto the vibration table 4 is the working coverage area, and the working coverage area is provided with a clearance opening 41 for avoiding the boom 61.

[0047] In this embodiment, by providing the clearance opening 41, collisions or interference between the rotating arm 61 and the platform of the vibration table 4 can be avoided during the movement.

[0048] The working coverage area is defined by the area covered by the orthographic projection of the rotating arm 61 onto the vibration table 4 as it moves around its rotation center. It should be noted that this area is determined by the length of the rotating arm 61, its rotation angle range, and its relative position on the vibration table 4.

[0049] Specifically, in practical applications, when the rotating arm 61 rotates around its center of rotation, for each revolution, the rotating arm 61 drives the test chamber 1 to switch from the first operating position to the second operating position via the contact wheel 62 and the transmission plate 3. When the rotating arm 61 starts to rotate, the contact wheel 62 contacts the transmission plate 3 and rolls along the transmission plate 3 as the rotating arm 61 rotates, converting the rotational force of the rotating arm 61 into a linear force that pushes the transmission plate 3, thereby driving the vibrating arm 2 to rotate around the rotating base 5, causing the test chamber 1 to gradually rise to the second operating position. At this time, if the rotating arm 61 continues to rotate, the contact wheel 62 will remain in contact with or in relative motion with the transmission plate 3, but the test chamber 1 is already in the limit state of the second operating position. When the rotating arm 61 returns to near its initial angle after rotating one revolution, the cooperation between the drive assembly 6 and the transmission plate 3 changes, the contact wheel 62 separates from the transmission plate 3, and the test chamber 1 falls rapidly to the first operating position under its own gravity and impacts the vibration table 4, generating a vibration effect. This simulates the vibration and impact that pyrotechnics may suffer during actual use or transportation. This cycle repeats continuously, providing a stable and repeatable vibration environment for pyrotechnic testing according to the set cycle and parameters, which helps to accurately obtain the safety performance data of the pyrotechnics under vibration conditions.

[0050] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 2 As shown, the vibration generator also includes: an adjustment plate 7, which is located on the side of the transmission plate 3 near the rotating arm 61. The distance between the adjustment plate 7 and the transmission plate 3 is adjustable, and the contact wheel 62 is in contact with the adjustment plate 7.

[0051] In this embodiment, when the working radius of the rotating arm 61 is fixed, the degree to which the contact wheel 62 pushes the adjusting plate 7 and the transmission plate 3 can be changed by adjusting the distance between the adjusting plate 7 and the transmission plate 3, thereby changing the rotation angle of the vibrating arm 2 and achieving precise control of the height of the test chamber 1 from the first operating position to the second limit position.

[0052] Specifically, when the distance between the adjusting plate 7 and the transmission plate 3 increases, the height of the test chamber 1 from the first operating position to the second limit position increases; when the distance between the adjusting plate 7 and the transmission plate 3 decreases, the height of the test chamber 1 from the first operating position to the second limit position decreases.

[0053] In the above embodiments, see Figure 2 As shown, a rotating shaft 8, a first adjusting screw 9, and a second adjusting screw 10 are sequentially arranged between the adjusting plate 7 and the transmission plate 3 along the rolling direction of the contact wheel 62. The first adjusting screw 9 passes through the transmission plate 3 and is connected to the adjusting plate 7. The first adjusting screw 9 is used to lift the adjusting plate 7. The second adjusting screw 10 passes through the transmission plate 3 and abuts against the adjusting plate 7. The second adjusting screw 10 is used to push the adjusting plate 7.

[0054] Here, by setting the rotating shaft 8, the first adjusting screw 9 and the second adjusting screw 10, the interval distance between the adjusting plate 7 and the transmission plate 3 can be precisely adjusted.

[0055] The thrust exerted by the second adjusting screw 10 on the adjusting plate 7 is greater than the tension exerted by the first adjusting screw 9 on the adjusting plate 7.

[0056] Specifically, to increase the height of the test chamber 1, the second adjusting screw 10 can be used to push the adjusting plate 7, increasing the distance between the adjusting plate 7 and the transmission plate 3. This increases the rotation angle of the vibrating arm 2 when the contact wheel 62 pushes the adjusting plate 7 and the transmission plate 3, thus raising the test chamber 1 to a higher second limit position. Conversely, to decrease the height of the test chamber 1, the pushing force of the second adjusting screw 10 on the adjusting plate 7 can be removed. In this case, the adjusting plate 7, under the pulling force applied by the first adjusting screw 9, decreases the distance between the adjusting plate 7 and the transmission plate 3. This decreases the rotation angle of the vibrating arm 2 when the contact wheel 62 pushes the adjusting plate 7 and the transmission plate 3, thus raising the test chamber 1 to a lower second limit position. It should be noted that the rotation of the vibrating arm 2 can be analogized to the movement of a lever. The pushing force of the contact wheel 62 on the adjusting plate 7 and the transmission plate 3 is equivalent to the force acting on one end of the lever, the swivel seat 5 of the vibrating arm 2 is equivalent to the fulcrum of the lever, and the position of the test chamber 1 is equivalent to the other end of the lever. When the contact wheel 62 pushes the distance between the adjusting plate 7 and the transmission plate 3 to increase, that is, when the distance between the adjusting plate 7 and the transmission plate 3 increases, it is as if a larger lever arm is applied to one end of the lever, thereby causing the vibrating arm 2 to rotate at a larger angle, and thus driving the test chamber 1 to rise to a higher position.

[0057] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 2 and Figure 3 As shown, a clearance hole 31 is provided on the transmission plate 3 at a position relative to the first adjusting screw 9. The first adjusting screw 9 passes through the clearance hole 31. A first adjusting nut 11 is provided at the end of the first adjusting screw 9 away from the adjusting plate 7. An elastic element 13 is provided between the first adjusting nut 11 and the transmission plate 3. The first end of the elastic element 13 abuts against the first adjusting nut 11, and the second end of the elastic element 13 abuts against the transmission plate 3. When the second adjusting screw 10 pushes the adjusting plate 7, the adjusting plate 7 rotates about the rotation axis 8 in a direction away from the transmission plate 3, causing the elastic element 13 to deform and accumulate elastic potential energy. When the second adjusting screw 10 moves away from the adjusting plate 7, the elastic element 13 releases elastic potential energy to drive the adjusting plate 7 to rotate about the rotation axis 8 in a direction closer to the transmission plate 3.

[0058] In this embodiment, when the second adjusting screw 10 pushes the adjusting plate 7, the adjusting plate 7 rotates away from the transmission plate 3 around the rotation axis 8. At this time, the elastic element 13 at one end of the first adjusting screw 9 is compressed, accumulating elastic potential energy. This process provides a buffer for the movement of the adjusting plate 7, preventing the adjusting plate 7 and the transmission plate 3 from colliding violently or being damaged due to sudden thrust. When the second adjusting screw 10 moves away from the adjusting plate 7, the elastic element 13 releases its elastic potential energy, driving the adjusting plate 7 to rotate closer to the transmission plate 3 around the rotation axis 8. This allows the adjusting plate 7 to reset under the action of elastic force, returning to its relatively initial position, ensuring the reversibility and stability of the distance adjustment system between the adjusting plate 7 and the transmission plate 3.

[0059] The clearance hole 31 can be a slotted hole, etc. It should be noted that the slotted hole has an elongated structure, allowing for relative displacement space of the first adjusting screw 9 within a certain range, thus preventing interference between the first adjusting screw 9 and the transmission plate 3 or hindering the smooth operation of the adjustment due to the rotation of the adjusting plate 7. When the adjusting plate 7 rotates about the rotating shaft 8 as the center of rotation, the first adjusting screw 9 will move within the slotted hole along with the movement of the adjusting plate 7.

[0060] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 2 and Figure 3 As shown, a through hole 32 is provided on the transmission plate 3 at a position relative to the second adjusting screw 10. A second adjusting nut 12 is fixedly provided on the upper surface of the transmission plate 3 at a position relative to the second adjusting screw 10. The second adjusting screw 10 and the second adjusting nut 12 are threadedly connected and pass through the through hole 32.

[0061] In this embodiment, the second adjusting screw 10 is threadedly connected to the second adjusting nut 12 fixed on the upper surface of the transmission plate 3, enabling the adjustment process to have high precision. When the second adjusting screw 10 is rotated, based on the pitch characteristics of the thread, the second adjusting screw 10 will generate a corresponding precise displacement along the axial direction for each certain angle of rotation. By precisely controlling the rotation angle, the degree of pushing of the second adjusting screw 10 against the adjusting plate 7 can be accurately adjusted, thereby accurately changing the interval distance between the adjusting plate 7 and the transmission plate 3. This achieves fine adjustment of the height of the test chamber 1 from the first operating position to the second limit position, meeting the diverse requirements of different pyrotechnic tests for vibration intensity, vibration amplitude, and other simulated environments.

[0062] In some possible implementations disclosed in this application, see [link to relevant documentation]. Figure 4As shown, the test chamber 1 is equipped with a first test station, a second test station and a third test station. The first test station is used to achieve the setting of the output end of the pyrotechnic device under test being in a horizontal state. The second test station is used to achieve the setting of the output end of the pyrotechnic device under test being in an upward orientation. The third test station is used to achieve the setting of the output end of the pyrotechnic device under test being in a downward orientation.

[0063] In this embodiment, by setting up three different test stations inside the test chamber 1, the safety performance of the pyrotechnic device under test can be evaluated from multiple perspectives. It should be noted that different output end postures will result in different stress conditions inside the pyrotechnic device, and the compression, friction, and other effects on the gunpowder during vibration will also vary depending on the posture.

[0064] The first test station enables the output end of the pyrotechnic device under test to be in a horizontal position, which can simulate the state of the pyrotechnic device being placed flat in the transport vehicle or in some horizontally installed equipment during actual transportation.

[0065] In the second testing station, the output end of the pyrotechnic device under test is facing upwards, which is similar to the state of the pyrotechnic device in certain special installation environments or storage methods. For example, in some vertically installed launching devices, the output end of the pyrotechnic device is facing upwards.

[0066] The third test station positions the pyrotechnic device under test with its output end facing downwards, simulating a possible real-world working condition. Under certain installation structures or special transportation methods, the pyrotechnic device may be positioned with its output end facing downwards.

[0067] Specifically, in practical applications, several of the first, second, and third test stations are set up. Multiple test stations of the same type can simultaneously perform safety performance tests on multiple pyrotechnic devices under test, which greatly improves testing efficiency and reduces testing time costs.

[0068] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0069] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A vibration generator, characterized in that, include: Test chamber (1), on both sides of the test chamber (1) are arranged vibrating arms (2) opposite to each other, and a transmission plate (3) is arranged between the two vibrating arms (2); A vibration table (4) is provided on the vibration table (4), and the vibration arm (2) is rotatably connected to the rotary seat (5); A drive assembly (6) is disposed on the vibration table (4). The drive assembly (6) is used to cooperate with the transmission plate (3) to make the vibration arm (2) rotate so as to drive the test chamber (1) to switch between the first operating position and the second operating position. When the test chamber (1) switches from the first operating position to the second operating position, the drive component (6) abuts against the transmission plate (3) to make the vibrating arm (2) rotate. When the test chamber (1) switches from the second operating position to the first operating position, the drive component (6) separates from the transmission plate (3). The test chamber (1) falls to the first operating position under its own gravity and hits the vibration table (4), causing the pyrotechnics to be tested placed in the test chamber (1) to vibrate.

2. The vibration generator according to claim 1, characterized in that, The driving component (6) includes: A rotating arm (61) is rotatably connected to a contact wheel (62) at one end. When the test chamber (1) switches from the first operating position to the second operating position, the contact wheel (62) abuts against the transmission plate (3) and rolls along the transmission plate (3).

3. The vibration generator according to claim 2, characterized in that, The working space of the boom (61) is the area formed by the orthographic projection on the vibration table (4) as the working coverage area, and the working coverage area is provided with a clearance opening (41) to avoid the boom (61).

4. The vibration generator according to claim 2, characterized in that, The vibration generator also includes: Adjustment plate (7) is disposed on the side of the transmission plate (3) near the rotating arm (61). The distance between the adjustment plate (7) and the transmission plate (3) is adjustable. The contact wheel (62) is in contact with the adjustment plate (7).

5. The vibration generator according to claim 4, characterized in that, A rotating shaft (8), a first adjusting screw (9), and a second adjusting screw (10) are sequentially arranged between the adjusting plate (7) and the transmission plate (3) along the rolling direction of the contact wheel (62). The first adjusting screw (9) passes through the transmission plate (3) and is connected to the adjusting plate (7). The first adjusting screw (9) is used to lift the adjusting plate (7). The second adjusting screw (10) passes through the transmission plate (3) and abuts against the adjusting plate (7). The second adjusting screw (10) is used to push the adjusting plate (7).

6. The vibration generator according to claim 5, characterized in that, A clearance hole (31) is provided on the transmission plate (3) at a position relative to the first adjusting screw (9). The first adjusting screw (9) passes through the clearance hole (31). A first adjusting nut (11) is provided at the end of the first adjusting screw (9) away from the adjusting plate (7). An elastic element (13) is provided between the first adjusting nut (11) and the transmission plate (3). The first end of the elastic element (13) abuts against the first adjusting nut (11), and the second end of the elastic element (13) abuts against the transmission plate (3).

7. The vibration generator according to claim 6, characterized in that, When the second adjusting screw (10) pushes the adjusting plate (7), the adjusting plate (7) rotates about the rotating shaft (8) as the center of rotation in a direction away from the transmission plate (3), so that the elastic element (13) deforms and accumulates elastic potential energy.

8. The vibration generator according to claim 6, characterized in that, When the second adjusting screw (10) moves away from the adjusting plate (7), the elastic element (13) releases elastic potential energy to drive the adjusting plate (7) to rotate about the rotating shaft (8) as the center of rotation towards the transmission plate (3).

9. The vibration generator according to claim 5, characterized in that, A through hole (32) is provided on the transmission plate (3) at a position relative to the second adjusting screw (10). A second adjusting nut (12) is fixedly provided on the upper surface of the transmission plate (3) at a position relative to the second adjusting screw (10). The second adjusting screw (10) is threadedly connected to the second adjusting nut (12) and passes through the through hole (32).

10. The vibration generator according to claim 1, characterized in that, The test chamber (1) is equipped with a first test station, a second test station and a third test station. The first test station is used to achieve the setting of the output end of the pyrotechnic device under test being horizontal. The second test station is used to achieve the setting of the output end of the pyrotechnic device under test being upward. The third test station is used to achieve the setting of the output end of the pyrotechnic device under test being downward.

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