Vibration test coupling device and four-in-one vibration test system

Abstract

The present invention belongs to the field of vibration test technology, and discloses a vibration test coupling device and a four-integrated vibration test system. The vibration test coupling device includes a transition head, a balancing component and a correction component. The transition head can be slidably inserted in a test box. A plurality of sliding grooves are also provided on the transition head. Each balancing component includes a limit plug plate and an adjustment airbag. The limit plug plate is inserted in the sliding groove and connected to the test box. The adjustment airbag is used to balance the force exerted on the transition head under different pressure difference conditions. The correction component includes a correction elastic member, and the correction elastic member is used to balance the deflection force exerted on the transition head due to the pressure difference between different adjustment airbags. It can not only balance the force exerted on the transition head due to the pressure difference on both sides, keep the transition head in a balanced position, but also offset the deflection and tilting force exerted on the transition head due to the pressure difference in different adjustment airbags, and ensure that the central axis of the transition head always coincides with the central axis of the vibration generator.

Description

Technical Field

[0001] The present invention relates to the field of vibration test technology, and in particular to a vibration test coupling device and a four-integrated vibration test system. Background Art

[0002] The four-in-one vibration test system refers to a vibration test device that can simultaneously complete the four environments of vibration, temperature, humidity and air pressure. Conventional vibration test systems are divided into water-cooled and air-cooled types. The water-cooled vibration generator dissipates heat through an independent and closed water inlet pipe. Therefore, the method of synchronously changing the air pressure inside the test box and the vibration generator can be used to ensure that the equilibrium state is not affected; but the air-cooled vibration generator needs to be cooled by air supply or exhaust through a fan, and it is impossible to achieve synchronous changes in the air pressure inside and outside the test box. The test box will be displaced under the intervention of internal and external pressures, affecting the initial equilibrium position of the system. For a vibration test system with a maximum displacement of only 100mm, it will affect the normal operation of the equipment. In a low-pressure environment, the vibration generator is in an atmospheric pressure environment. When the test box is low pressure, the pressure difference on both sides of the transition head will generate an upward force of 10 tons per square meter on the transition piece, pushing the transition piece toward the inside of the test box. If the force is not balanced, the dynamic coil of the vibration generator will move upward under the action of the pressure difference, resulting in a departure from the equilibrium position. On the contrary, when the air pressure in the test chamber is high, the pressure difference on both sides of the transition head will generate a downward force of 10 tons per square meter on the transition piece, pushing the transition piece to move away from the inside of the test chamber. If the force is not balanced, the dynamic coil of the vibration generator will move downward under the action of the pressure difference, causing it to deviate from the equilibrium position.

[0003] Therefore, in order to ensure the stability of the transition head position and prevent the dynamic coil from moving in an environment where there is a pressure difference on both sides, causing it to deviate from the equilibrium position, the air pressure change in the airbag is usually adjusted to offset the force acting on the transition head due to the pressure difference, thereby ensuring that the transition head is in a balanced position.

[0004] However, there are certain defects when using adjusting air bags to balance the force. Due to various factors such as the differences in the inflation and deflation rates of each adjusting air bag and the errors in the sizes of each adjusting air bag, the pressures in each adjusting air bag cannot be increased or decreased synchronously when balancing the force applied to the transition head. As a result, during adjustment, the transition head deflects and tilts due to the different pressure values ​​in each adjusting air bag, and the central axis of the transition head cannot coincide with the central axis of the vibration generator, affecting the balance position of the dynamic coil and damaging the vibration generator, causing the vibration generator to fail to work normally. Summary of the invention

[0005] The object of the present invention is to provide a vibration test coupling device and a four-in-one vibration test system, which can not only balance the pressure difference on both sides of the transition head to make the transition head in a balanced position, but also avoid deflection and tilting when offsetting the force acting on the transition head due to the pressure difference, ensure that the central axis of the transition head always coincides with the central axis of the vibration generator, avoid damage to the vibration generator, and thus ensure the effective operation of the vibration generator.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In one aspect, a vibration test coupling device is provided, the vibration test coupling device comprising:

[0008] A transition head, the transition head is slidably inserted into the test box, one end of the transition head extends into the test box, and the other end of the transition head extends out of the test box to connect with the moving coil of the vibration generator, and the transition head is also provided with a plurality of evenly distributed sliding grooves;

[0009] A balancing component, wherein the balancing component corresponds to the plurality of sliding grooves one by one, each of the balancing components comprises a limit plug plate and an adjusting airbag, a part of the limit plug plate is inserted into the sliding groove, another part of the limit plug plate extends out of the sliding groove and is connected to the test box, the adjusting airbag is arranged in the sliding groove and is clamped between the limit plug plate and the surface of the sliding groove facing the limit plug plate, and the adjusting airbag is used to balance the force applied to the transition head under different pressure difference conditions;

[0010] A deviation correction component, wherein the deviation correction component includes a deviation correction elastic member, wherein the deviation correction elastic member is connected to the sliding channel and is used to balance the deflection force acting on the transition head due to the pressure difference between different regulating airbags.

[0011] Optionally, the correcting assembly also includes a first connecting member and a second connecting member, the first connecting member is connected to the surface of the limiting plug plate connected to the adjusting airbag, the second connecting member is connected to the side wall of the sliding channel, and the two ends of the correcting elastic member are respectively connected to the first connecting member and the second connecting member.

[0012] Optionally, a plurality of symmetrically distributed deviation-correcting components are provided in each of the sliding channels.

[0013] Optionally, the vibration test coupling device also includes a supporting connecting ring, a through hole for inserting the transition head is opened on the test box, the supporting connecting ring is connected to the through hole, the transition head can be slidably inserted in the supporting connecting ring, and the part of the limiting plug plate extending out of the sliding groove is connected to the supporting connecting ring.

[0014] Optionally, the vibration test coupling device further comprises a sealing assembly, wherein the sealing assembly comprises a sealing member, and the sealing member is sleeved on the transition head and used for sealing a gap between the transition head and the supporting connecting ring.

[0015] Optionally, the sealing assembly further comprises a fixing ring, the fixing ring being connected to a side of the supporting connecting ring facing away from the limiting plug plate, and the sealing member being clamped between an inner side of the fixing ring and an outer side of the transition head.

[0016] Optionally, the limiting plug plate includes an inserting portion and a connecting portion, the inserting portion is inserted into the sliding groove and adapted to the shape of the sliding groove, the connecting portion is arranged outside the sliding groove and extends in a direction away from the adjusting airbag, and the connecting portion is connected to the supporting connecting ring.

[0017] Optionally, the sliding channel is a fan-shaped notch provided on the transition head, and the plug-in portion is a triangle that matches the notch.

[0018] Optionally, a connecting threaded hole is provided at the through hole of the test box, and a double-headed countersunk hole corresponding to the connecting threaded hole is provided on the supporting connecting ring.

[0019] On the other hand, a four-in-one vibration test system is provided, which includes the vibration test coupling device as described in any one of the above items, and also includes the vibration generator, the test box and the experimental platform. The vibration generator is configured to provide a vibration environment for the vibration test, and the test box is configured to provide temperature, humidity, low pressure and high pressure environment to the test piece. The experimental platform is arranged in the test box and connected to one end of the transition head extending into the test box, and the experimental platform is used to carry the test piece.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a vibration test coupling device, which arranges adjusting airbags in each sliding groove on a transition head, and connects the two ends of each adjusting airbag to a limit plug plate and a surface of the sliding groove facing the limit plug plate respectively, and connects the limit plug plate to a test box, so that when there is a pressure difference between the inside of the test box and the outside, the pressure inside the adjusting airbag is increased by inflating air into the adjusting airbag, so as to balance the force applied to the transition head due to the pressure difference on both sides, and keep the transition head in a balanced position, and arranges a deviation-correcting elastic part in the sliding groove, so that when the transition head deflects and tilts due to the pressure difference in different adjusting airbags, the deviation-correcting elastic part is deformed, and the deflection and tilting force applied to the transition head due to the pressure difference in different adjusting airbags is offset by its own elastic force, so as to ensure that the central axis of the transition head always coincides with the central axis of the vibration generator, so as to avoid the dynamic coil from being deflected and tilted with the transition head, thereby damaging the vibration generator, and ensuring the effective operation of the vibration generator.

[0022] The present invention also provides a four-in-one vibration test system, which can keep the transition head in a balanced position at all times and avoid deflection and tilt of the transition head by applying the above-mentioned vibration test coupling device, thereby ensuring that the four-in-one vibration system can be effectively tested in any voltage-changing environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an assembly diagram of the vibration test coupling device provided by the present invention;

[0024] Figure 2 is a structural cross-sectional view of the vibration test coupling device provided by the present invention;

[0025] Figure 3 It is a connection schematic diagram of the vibration test coupling device provided by the present invention in a low-pressure environment in a test box;

[0026] Figure 4 It is a connection schematic diagram of the vibration test coupling device of the present invention in a high-pressure environment in a test box;

[0027] Figure 5 This is a state diagram of the deviation-correcting elastic member in the vibration test coupling device of the present invention when no force is applied;

[0028] Figure 6 It is a state diagram of the deviation-correcting elastic member in the vibration test coupling device of the present invention when it is subjected to force.

[0029] In the figure:

[0030] 100, test chamber; 200, vibration generator;

[0031] 1. Transition head; 11. Sliding groove;

[0032] 2. Balance assembly; 21. Limiting plug plate; 211. Plug-in portion; 212. Connecting portion; 22. Adjusting airbag;

[0033] 3. deviation-correcting component; 31. deviation-correcting elastic member; 32. first connecting member; 33. second connecting member;

[0034] 4. Support connecting ring;

[0035] 5. Sealing assembly; 51. Sealing element; 52. Retaining ring. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

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

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] The four-in-one vibration test system refers to a vibration test device that can simultaneously complete the four environments of vibration, temperature, humidity and air pressure. Conventional vibration test systems are divided into water-cooled and air-cooled types. The water-cooled vibration generator dissipates heat through an independent and closed water inlet pipe. Therefore, the method of synchronously changing the air pressure inside the test box and the vibration generator can be used to ensure that the equilibrium state is not affected; but the air-cooled vibration generator needs to be cooled by air supply or exhaust through a fan, and it is impossible to achieve synchronous changes in the air pressure inside and outside the test box. The test box will be displaced under the intervention of internal and external pressures, affecting the initial equilibrium position of the system. For a vibration test system with a maximum displacement of only 100mm, it will affect the normal operation of the equipment. In a low-pressure environment, the vibration generator is in an atmospheric pressure environment. When the test box is low pressure, the pressure difference on both sides of the transition head will generate an upward force of 10 tons per square meter on the transition piece, pushing the transition piece toward the inside of the test box. If the force is not balanced, the dynamic coil of the vibration generator will move upward under the action of the pressure difference, resulting in a departure from the equilibrium position. On the contrary, when the air pressure in the test chamber is high, the pressure difference on both sides of the transition head will generate a downward force of 10 tons per square meter on the transition piece, pushing the transition piece to move away from the inside of the test chamber. If the force is not balanced, the dynamic coil of the vibration generator will move downward under the action of the pressure difference, causing it to deviate from the equilibrium position.

[0041] Therefore, in order to ensure the stability of the transition head position and prevent the dynamic coil from moving in an environment where there is a pressure difference on both sides, causing it to deviate from the equilibrium position, the air pressure change in the airbag is usually adjusted to offset the force acting on the transition head due to the pressure difference, thereby ensuring that the transition head is in a balanced position.

[0042] However, there are certain defects when using adjusting air bags to balance the force. Due to various factors such as the differences in the inflation and deflation rates of each adjusting air bag and the errors in the sizes of each adjusting air bag, the pressures in each adjusting air bag cannot be increased or decreased synchronously when balancing the force applied to the transition head. As a result, during adjustment, the transition head deflects and tilts due to the different pressure values ​​in each adjusting air bag, and the central axis of the transition head cannot coincide with the central axis of the vibration generator, affecting the balance position of the dynamic coil and damaging the vibration generator, causing the vibration generator to fail to work normally.

[0043] Therefore, in order to balance the pressure difference on both sides of the transition head and put the transition head in a balanced position, and avoid deflection and tilting due to the pressure difference in each adjusting airbag when offsetting the force acting on the transition head due to the pressure difference, ensure that the central axis of the transition head always coincides with the central axis of the vibration generator, avoid damage to the vibration generator, and ensure the effective operation of the vibration generator, this embodiment provides a vibration test coupling device.

[0044] like Figures 1 to 6 As shown, the vibration test coupling device includes a transition head 1, a balancing component 2 and a correction component 3. The transition head 1 can be slidably inserted into the test box 100, one end of the transition head 1 extends into the test box 100, and the other end of the transition head 1 extends out of the test box 100 to connect with the moving coil of the vibration generator 200. The transition head 1 is also provided with a plurality of evenly distributed sliding grooves 11. The balancing component 2 corresponds to the plurality of sliding grooves 11 one by one. Each balancing component 2 includes a limit plate 21 and an adjustment airbag 22. A portion of the limit plate 21 is inserted into the sliding groove The adjusting airbag 22 is arranged in the sliding groove 11 and is clamped between the limiting plug plate 21 and the surface of the sliding groove 11 facing the limiting plug plate 21. The adjusting airbag 22 is used to balance the force applied to the transition head 1 under different pressure difference conditions. The correcting assembly 3 includes a correcting elastic member 31, which is connected to the sliding groove 11 and is used to balance the deflection force acting on the transition head 1 due to the pressure difference between different adjusting airbags 22.

[0045] By arranging an adjusting airbag 22 in each sliding groove 11 on the transition head 1, and connecting the two ends of each adjusting airbag 22 to the limiting plug plate 21 and the surface of the sliding groove 11 facing the limiting plug plate 21, and connecting the limiting plug plate 21 to the test box 100, when there is a pressure difference between the inside of the test box 100 and the outside, the pressure inside the adjusting airbag 22 is increased by inflating the adjusting airbag 22, so as to balance the force on the transition head 1 due to the pressure difference on both sides, keep the transition head 1 in a balanced position, and By arranging a deviation-correcting elastic member 31 in the sliding groove 11, when the transition head 1 deflects and tilts due to the pressure difference in different adjusting airbags 22, the deviation-correcting elastic member 31 is deformed, and the deflection and tilting force exerted on the transition head 1 due to the pressure difference in different adjusting airbags 22 is offset by its own elastic force, thereby ensuring that the central axis of the transition head 1 always coincides with the central axis of the vibration generator 200, thereby preventing the moving coil from deflecting and tilting with the transition head 1, causing damage to the vibration generator 200, and ensuring the effective operation of the vibration generator 200.

[0046] When the inside of the test box 100 is a low-pressure environment, the outside atmospheric pressure will be higher than the air pressure inside the test box 100. Therefore, the transition head 1 will be subjected to a thrust that pushes the transition head 1 to penetrate into the test box 100. At this time, air is inflated into the regulating airbag 22 to increase the pressure value inside the regulating airbag 22, so as to ensure that the distance between the limit plug plate 21 and the surface of the sliding channel 11 facing the limit plug plate 21 remains unchanged, thereby stabilizing the transition head 1 and keeping the transition head 1 in a balanced position at all times. At the same time, due to various factors such as the difference in the inflation rate of each regulating airbag 22 and the error in the size of each regulating airbag 22, the transition head 1 will be subjected to a deflection and tilting force due to the pressure difference in different regulating airbags 22. At this time, the deviation-correcting elastic member 31 will be deformed, and its own elastic force will be used to offset the deflection and tilting force on the transition head 1 due to the pressure difference in different regulating airbags 22, thereby ensuring that the central axis of the transition head 1 always coincides with the central axis of the vibration generator 200, so as to ensure the effective operation of the vibration generator 200.

[0047] When the inside of the test box 100 is a high-pressure environment, the outside atmospheric pressure will be lower than the air pressure inside the test box 100. Therefore, the transition head 1 will be subjected to a traction force that pushes the transition head 1 away from the inside of the test box 100. At this time, air is inflated into the regulating airbag 22 to increase the pressure value inside the regulating airbag 22, so as to ensure that the distance between the limit plug plate 21 and the surface of the sliding channel 11 facing the limit plug plate 21 remains unchanged, thereby stabilizing the transition head 1 and keeping the transition head 1 in a balanced position at all times. At the same time, due to various factors such as the difference in the inflation rate of each regulating airbag 22 and the error in the size of each regulating airbag 22, the transition head 1 will be subjected to a deflection and tilting force due to the pressure difference in different regulating airbags 22. At this time, the deviation-correcting elastic member 31 will be deformed, and its own elastic force will be used to offset the deflection and tilting force on the transition head 1 due to the pressure difference in different regulating airbags 22, thereby ensuring that the central axis of the transition head 1 always coincides with the central axis of the vibration generator 200, so as to ensure the effective operation of the vibration generator 200.

[0048] Alternatively, if Figure 2 , Figure 5As shown, the correcting component 3 also includes a first connecting member 32 and a second connecting member 33. The first connecting member 32 is connected to the surface where the limiting plug plate 21 is connected to the adjusting airbag 22, and the second connecting member 33 is connected to the side wall of the sliding groove 11. The two ends of the correcting elastic member 31 are respectively connected to the first connecting member 32 and the second connecting member 33. One end of the correcting elastic member 31 is connected to the surface where the limit plug plate 21 and the adjusting airbag 22 are connected through the first connecting member 32, and the other end of the correcting elastic member 31 is connected to the side wall of the sliding groove 11 through the second connecting member 33, so that the correcting elastic member 31 forms the same force mode as the cantilever beam, that is, when the end of the correcting elastic member 31 connected to the first connecting member 32 is subjected to force, even if the deflection and tilting amplitude is very small, the correcting elastic member 31 will also undergo a large deformation, thereby responding in time and generating a large elastic force through a large deformation, so as to offset the deflection and tilting force exerted on the transition head 1 due to the pressure difference in different adjusting airbags 22, thereby ensuring that the central axis of the transition head 1 always coincides with the central axis of the vibration generator 200.

[0049] In this embodiment, the first connecting member 32 is rod-shaped and connected to the limit plug plate 21 by bolts, and the second connecting member 33 is plate-shaped and connected to the side wall of the sliding channel 11 by bolts. In this embodiment, the deviation-correcting elastic member 31 can be any elastic member, such as a rubber plate or a spring net.

[0050] Alternatively, if Figure 1 As shown, a plurality of symmetrically distributed deviation correction components 3 are provided in each sliding channel 11. By providing a plurality of deviation correction components 3, sufficient force is ensured during deviation correction. In this embodiment, two deviation correction components 3 are provided in each sliding channel 11, and the deviation correction elastic members 31 of the two deviation correction components 3 are distributed at an angle, so that the force is better in offsetting the deflection and tilting force of the transition head 1 due to the pressure difference in different adjustment airbags 22, and the force during deviation correction is further improved.

[0051] Alternatively, if Figure 2As shown, the vibration test coupling device also includes a support connection ring 4, a through hole for inserting the transition head 1 is opened on the test box 100, the support connection ring 4 is connected to the through hole, the transition head 1 can be slidably inserted in the support connection ring 4, and the part of the limit plug plate 21 extending out of the sliding groove 11 is connected to the support connection ring 4. By setting the support connection ring 4, the sliding connection between the test box 100 and the transition head 1 is realized. In this embodiment, a fixed boss is formed on the inner wall of the through hole by extending toward the center of the through hole, thereby providing a connection position for the support connection ring 4. Since the test box 100 forms a fixed boss on the inner wall of the through hole, the test box 100 forms installation slots on both sides of the fixed boss. When the support connection ring 4 is connected to the fixed boss, the support connection ring 4 is accommodated in the installation slot, so that the support connection ring 4 overlaps with the test box 100 in space, thereby avoiding the support connection ring 4 protruding from the surface of the test box 100, and the support connection ring 4 does not need to occupy additional space, so that the structure is more compact.

[0052] Alternatively, if Figure 2 As shown, the vibration test coupling device also includes a sealing assembly 5, and the sealing assembly 5 includes a sealing member 51, which is sleeved on the transition head 1 and used to seal the gap between the transition head 1 and the supporting connecting ring 4. Since the transition head 1 can be slidably inserted in the supporting connecting ring 4, there is a gap between the transition head 1 and the supporting connecting ring 4. By providing the sealing member 51, the gap between the transition head 1 and the supporting connecting ring 4 is sealed to ensure the air tightness in the test box 100. In this embodiment, the sealing member 51 is made of materials such as nitrile rubber and silicone rubber to adapt to different media and working conditions.

[0053] Alternatively, if Figure 2 As shown, the sealing assembly 5 also includes a fixing ring 52, which is connected to the side of the supporting connecting ring 4 away from the limiting plug plate 21, and the sealing member 51 is clamped between the inner side of the fixing ring 52 and the outer side of the transition head 1. By connecting the fixing ring 52 to the supporting connecting ring 4 and clamping the sealing member 51 between the inner side of the fixing ring 52 and the outer side of the transition head 1, the sealing member 51 can be replaced by removing the fixing ring 52 without removing the supporting connecting ring 4, making the replacement operation of the sealing member 51 more convenient. In this embodiment, a countersunk hole is provided on the fixing ring 52, and a connecting threaded hole corresponding to the countersunk hole on the fixing ring 52 is provided on the supporting connecting ring 4, and the bolt is threadedly connected to the connecting threaded hole on the supporting connecting ring 4 by passing through the countersunk hole on the fixing ring 52.

[0054] In addition, in this embodiment, the seal 51 is in a "ji" shape, and the two ends of the seal 51 are trapezoidal. At the same time, dovetail grooves are respectively formed on the support connection ring 4 and the transition head 1, so that the trapezoidal ends of the seal 51 can be respectively clamped in the dovetail grooves on the support connection ring 4 and the transition head 1, thereby realizing the fixation of the seal 51. And then, it is cooperated with the fixing ring 52 to press the seal 51 tightly on the transition head 1 to ensure the reliability of the seal.

[0055] Optionally, as Figure 2 shown, the limit insertion plate 21 includes an insertion part 211 and a connection part 212. The insertion part 211 is inserted into the sliding channel 11 and is adapted to the shape of the sliding channel 11. The connection part 212 is arranged outside the sliding channel 11 and extends along the direction away from the adjustment airbag 22. The connection part 212 is connected to the support connection ring 4. By providing the insertion part 211 adapted to the shape of the sliding channel 11, after the limit insertion plate 21 is inserted into the sliding channel 11, the limit insertion plate 21 fits more closely to the transition head 1, increasing the contact area, thereby improving the limiting force of the limit insertion plate 21 on the transition head 1.

[0056] Optionally, as Figure 1 shown, the sliding channel 11 is a fan-shaped notch formed on the transition head 1, and the insertion part 211 is a triangle adapted thereto. By opening the fan-shaped notch, while providing sufficient installation space for the balance assembly 2 and the deviation correction assembly 3, as much material on the transition head 1 as possible is retained, so as to ensure that the structural strength of the transition head 1 meets the requirements of the vibration test.

[0057] Optionally, as Figure 2 shown, a connection threaded hole is formed at the through hole of the test chamber 100, and a counterbore hole corresponding to the connection threaded hole is formed on the support connection ring 4. By forming the counterbore hole on the support connection ring 4, on the one hand, the support connection ring 4 can be connected to the test chamber 100 through the countersunk head bolt regardless of the front or back, thereby improving the convenience of the connection of the support connection ring 4. On the other hand, by forming the counterbore hole, when connecting the support connection ring 4 with the countersunk head bolt, the countersunk head bolt will not protrude from the surface of the support connection ring 4, thus ensuring the flatness of the surface of the support connection ring 4. In this embodiment, since the support connection ring 4 is fixedly connected to the fixed boss, the connection threaded hole is arranged on the fixed boss and penetrates the fixed boss.

[0058] In addition, it should be noted that since the adjustment airbag 22 can only withstand pressure and cannot resist tension, when the test chamber 100 is in different pressure environments, the position of the adjustment airbag 22 needs to be adjusted so that the adjustment airbag 22 is only subjected to thrust. Taking this vibration test coupling device as an example, as Figure 3As shown, when the test box 100 is in a low pressure environment, the limit plate 21 abuts against the sliding channel 11 near the test box 100, and the regulating airbag 22 is located on the side of the limit plate 21 facing the vibration generator 200, as shown in FIG. Figure 4 As shown, when the test box 100 is in a high pressure environment, the limit plate 21 abuts against the side of the sliding channel 11 close to the vibration generator 200, and the regulating airbag 22 is located on the side of the limit plate 21 facing the test box 100. Therefore, the vibration test coupling device is provided with a support connection ring 4 that can be connected to the test box 100 in both positive and negative directions, so that when the pressure environment inside the test box 100 changes, there is no need to adjust the position of the regulating airbag 22. Only by using the support connection ring 4 to realize the flip connection of the vibration test coupling device, it can adapt to vibration tests under different pressure environments.

[0059] In this embodiment, a four-in-one vibration test system is also provided, which includes the above-mentioned vibration test coupling device, and the four-in-one vibration test system also includes a vibration generator 200, a test box 100 and an experimental platform. The vibration generator 200 is configured to provide a vibration environment for the vibration test, and the test box 100 is configured to provide temperature, humidity, low pressure and high pressure environment to the test piece. The experimental platform is arranged in the test box 100 and is connected to one end of the transition head 1 extending into the test box 100, and the experimental platform is used to carry the test piece.

[0060] The four-in-one vibration test system can always keep the transition head 1 in a balanced position and avoid the transition head 1 from deflecting and tilting by applying the above-mentioned vibration test coupling device, thereby ensuring that the four-in-one vibration system can be effectively tested in any variable pressure environment.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A vibration test coupling device, characterized in that: The vibration test coupling device comprises: A transition head (1), the transition head (1) being slidably inserted into the test box (100), one end of the transition head (1) extending into the test box (100), and the other end of the transition head (1) extending out of the test box (100) to be connected to the moving coil of the vibration generator (200), and the transition head (1) being provided with a plurality of evenly distributed sliding grooves (11); A balancing component (2), wherein the balancing component (2) corresponds to the plurality of sliding grooves (11) one by one, and each of the balancing components (2) comprises a limit plug plate (21) and an adjusting air bag (22), wherein a portion of the limit plug plate (21) is inserted into the sliding groove (11), and another portion of the limit plug plate (21) extends out of the sliding groove (11) and is connected to the test box (100), and the adjusting air bag (22) is arranged in the sliding groove (11) and is clamped between the limit plug plate (21) and a surface of the sliding groove (11) facing the limit plug plate (21), and the adjusting air bag (22) is used to balance the force applied to the transition head (1) under different pressure difference conditions; A deviation correction component (3), the deviation correction component (3) comprising a deviation correction elastic member (31), the deviation correction elastic member (31) being connected to the sliding channel (11) and used to balance the deflection force acting on the transition head (1) due to the pressure difference between different regulating airbags (22); The deviation-correcting assembly (3) further comprises a first connecting member (32) and a second connecting member (33), wherein the first connecting member (32) is connected to the surface of the limiting plug plate (21) connected to the regulating airbag (22), and the second connecting member (33) is connected to the side wall of the sliding channel (11), and the two ends of the deviation-correcting elastic member (31) are respectively connected to the first connecting member (32) and the second connecting member (33).

2. The vibration test coupling device according to claim 1, characterized in that: A plurality of symmetrically distributed deviation-correcting components (3) are arranged in each of the sliding channels (11).

3. The vibration test coupling device according to claim 1, characterized in that: The vibration test coupling device also includes a supporting connection ring (4); a through hole for inserting the transition head (1) is provided on the test box (100); the supporting connection ring (4) is connected to the through hole; the transition head (1) can be slidably inserted into the supporting connection ring (4); and the portion of the limiting plug plate (21) extending out of the sliding channel (11) is connected to the supporting connection ring (4).

4. The vibration test coupling device according to claim 3, characterized in that: The vibration test coupling device also includes a sealing assembly (5), wherein the sealing assembly (5) includes a sealing member (51), wherein the sealing member (51) is sleeved on the transition head (1) and is used to seal a gap between the transition head (1) and the supporting connection ring (4).

5. The vibration test coupling device according to claim 4, characterized in that: The sealing assembly (5) further comprises a fixing ring (52), wherein the fixing ring (52) is connected to a side of the supporting connecting ring (4) facing away from the limiting plug plate (21), and the sealing member (51) is sandwiched between the inner side of the fixing ring (52) and the outer side of the transition head (1).

6. The vibration test coupling device according to claim 3, characterized in that: The limiting plug plate (21) comprises an inserting portion (211) and a connecting portion (212); the inserting portion (211) is inserted into the sliding groove (11) and is adapted to the shape of the sliding groove (11); the connecting portion (212) is arranged outside the sliding groove (11) and extends in a direction away from the regulating airbag (22); and the connecting portion (212) is connected to the supporting connecting ring (4).

7. The vibration test coupling device according to claim 6, characterized in that: The sliding channel (11) is a fan-shaped notch provided on the transition head (1), and the plug-in portion (211) is a triangle that matches the notch.

8. The vibration test coupling device according to claim 3, characterized in that: A connecting threaded hole is provided at the through hole of the test box (100), and a double-headed countersunk hole corresponding to the connecting threaded hole is provided on the supporting connecting ring (4).

9. Four comprehensive vibration test systems, characterized in that, The four-in-one vibration test system comprises the vibration test coupling device according to any one of claims 1 to 8, and the four-in-one vibration test system also comprises the vibration generator (200), the test box (100) and an experimental platform, wherein the vibration generator (200) is configured to provide a vibration environment for the vibration test, the test box (100) is configured to provide a temperature, humidity, low pressure and high pressure environment to the test piece, the experimental platform is arranged in the test box (100) and is connected to one end of the transition head (1) extending into the test box (100), and the experimental platform is used to carry the test piece.

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