Fastener vibration test device and method

Abstract

The invention relates to a fastener vibration test device and method, the fastener vibration test device comprises a test bench, a support seat, a vibration disc and a vibration impact member, the test bench is provided with a test bench surface and a cantilever; the supporting seat is arranged on the test bench surface, the supporting seat is provided with an accommodating space, the vibration disc is provided with at least one mounting hole, the mounting hole is used for mounting a fastener to be detected, the vibration disc is provided with a first relative position identification part, the fastener is provided with a second relative position identification part, and the vibration disc can be movably placed in the accommodating space; the vibration impact piece is arranged on the cantilever and used for penetrating through the top opening of the containing space to impact the vibration disc, so that vibration of the vibration disc is caused, and the relative position change of the first relative position identification part and the second relative position identification part before and after vibration is obtained. According to the invention, the technical problem that the anti-vibration performance of the aviation fastener cannot be subjected to a real and high-reducibility detection test before the aviation fastener is installed is solved.

Description

Technical Field

[0001] The invention relates to the field of fastener performance testing, and relates to a fastener vibration test device and method, and in particular to a fastener vibration test device and method for aviation. Background Art

[0002] In the aviation field, due to the working environment, aviation fasteners (structural parts used to fix various components on aircraft, such as rivets, screws, etc.) will encounter various complex vibration conditions throughout their life cycle. For example, during the ground installation or maintenance of the aircraft, the vibration generated during the maintenance or installation process (such as the rivet gun hitting the fastener or the position near the fastener) is transmitted to the fastener that has been installed in place; or during the flight and taxiing of the aircraft, the fastener will be subjected to reciprocating force due to bumps and other reasons, which will also transmit the vibration to the fastener.

[0003] The above vibration conditions may cause the installed fasteners to rotate axially, move axially, or destroy the fixed state of the fasteners, thus causing major safety hazards to the safe flight of the aircraft. It can be seen that the anti-vibration performance of the fasteners after installation is a very important characteristic. However, the traditional equipment and methods for vibration testing have problems such as complex configuration and high cost, and they cannot be used specifically to simulate the vibration conditions of aviation fasteners. Therefore, it is currently impossible to conduct a true and highly reproducible test on the anti-vibration performance of aviation fasteners before installation.

[0004] Therefore, the present invention provides a fastener vibration test device and method to overcome the defects of the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a fastener vibration test device and method, which can truly restore the vibration conditions that aviation fasteners are subjected to after being assembled in place. The test process is close to reality, can well reflect the impact of vibration on aviation fasteners, and accurately judge the vibration resistance of aviation fasteners to ensure that the vibration resistance meets the standard.

[0006] The purpose of the present invention can be achieved by adopting the following scheme:

[0007] The present invention provides a fastener vibration test device, the fastener vibration test device comprising:

[0008] A test bench, the test bench having a test bench surface and a cantilever located above the test bench surface;

[0009] A support base, the support base is arranged on the test table, and the support base has a receiving space with an open top;

[0010] A vibration plate, wherein the vibration plate has at least one mounting hole, wherein the mounting hole is used to mount a fastener to be detected, wherein a first relative position identification portion is disposed on the vibration plate, and a second relative position identification portion is disposed on the fastener, and wherein the vibration plate can be movably placed in the accommodating space;

[0011] A vibration impact piece, wherein the vibration impact piece is arranged on the cantilever and located above the support seat, and the vibration impact piece is used to impact the vibration plate through the top opening of the accommodating space, thereby causing the vibration plate to vibrate, so as to obtain the relative position change between the first relative position marking part and the second relative position marking part before and after the vibration.

[0012] In a preferred embodiment of the present invention, the support seat includes a support seat body, the top of the support seat body has a placement table, the outer periphery of the placement table has an upwardly extending annular baffle, the baffle and the placement table enclose the accommodating space with an open top.

[0013] In a preferred embodiment of the present invention, the baffle has at least one notch.

[0014] In a preferred embodiment of the present invention, the support seat further comprises a mounting plate, the top of the support seat body is connected to the top surface of the mounting plate, and the bottom surface of the mounting plate is connected to the test bench surface.

[0015] In a preferred embodiment of the present invention, the support base body is a hollow columnar structure, so as to form the annular placement platform on the top of the support base body;

[0016] The diameter of the vibration plate is larger than the inner diameter of the placement table and smaller than the outer diameter of the placement table.

[0017] In a preferred embodiment of the present invention, there are multiple mounting holes, and the multiple mounting holes have different hole diameters and / or hole wall structures.

[0018] In a preferred embodiment of the present invention, before the vibration plate is subjected to impact vibration, the first relative position marking portion and the second relative position marking portion cooperate to form at least one continuous straight line.

[0019] In a preferred embodiment of the present invention, the test bench comprises a base, one side of the top of the base forms the test bench surface, and the other side of the top of the base is provided with a support rib;

[0020] The cantilever has a first end and a second end opposite to each other. The first end of the cantilever is connected to a fixing frame located on the top of the supporting rib. The second end of the cantilever extends above the test table. The vibration impact member is arranged at the second end of the cantilever.

[0021] In a preferred embodiment of the present invention, two cover plates are provided at the second end of the cantilever, at least one of the two cover plates is detachable, and the two cover plates cooperate to form a fixing hole when assembled, and the fixing hole is used to install the vibration impact member.

[0022] In a preferred embodiment of the present invention, the vibration impact member comprises a rivet gun, and the impact head of the rivet gun is installed downward so as to impact the vibration plate through the impact head of the rivet gun.

[0023] The present invention provides a fastener vibration test method, which uses the above-mentioned fastener vibration test device to perform a fastener vibration test. The fastener vibration test method comprises the following steps:

[0024] Install the fastener to be tested in the mounting hole on the vibration plate, and the fastener is firmly connected to the vibration plate;

[0025] A first relative position identification portion and a second relative position identification portion are respectively provided on the vibration plate and the fastener, and a first relative position of the first relative position identification portion and the second relative position identification portion is recorded;

[0026] Placing the vibration plate in the accommodation space of the support seat;

[0027] Installing a vibration impact piece on the cantilever, and adjusting the distance between the vibration impact piece and the vibration plate to a preset distance;

[0028] Starting the vibration impact member to impact the vibration plate, so that the vibration plate vibrates in the accommodating space;

[0029] After a preset time, the vibration impact member stops impacting the vibration plate, a second relative position between the first relative position identification portion and the second relative position identification portion is recorded, and the second relative position is compared with the first relative position.

[0030] In a preferred embodiment of the present invention, the vibration impact member impacts the vibration disk intermittently, stops impacting the vibration disk at preset time intervals, and records the second relative position of the first relative position identification portion and the second relative position identification portion after each stop.

[0031] As described above, the characteristics and advantages of the fastener vibration test device and method of the present invention are:

[0032] A mounting hole is provided on the vibration disk, and the fastener to be tested is installed in the mounting hole to simulate the installation state of the fastener on the actual workstation, and a first relative position identification part and a second relative position identification part are respectively provided on the vibration disk and the fastener. The relative position between the first relative position identification part and the second relative position identification part can be used as a reference for whether the fastener and the vibration disk undergo relative movement under the vibration state. The vibration disk and the fastener thereon are placed in the accommodating space of the support seat, and the vibration impact member impacts the vibration disk through the top opening of the accommodating space, thereby causing the vibration of the vibration disk and comparing the relative positions of the first relative position identification part and the second relative position identification part after a preset time to see whether there is a change or the magnitude of the change, so that the vibration resistance of the fastener in the installation state can be known to ensure that the vibration resistance capacity meets the standard.

[0033] Since the vibration disk can be movably placed in the accommodating space of the support seat, when the vibration impact member impacts the vibration disk, the vibration disk will vibrate and change its position in the accommodating space. Therefore, the impact position of the vibration impact member on the vibration disk is not exactly the same each time, and the vibration amplitude of the vibration disk will also change, thereby being able to more realistically simulate the complex vibration working environment where the fastener is located, making the test process closer to reality, and better reflecting the impact of vibration on fasteners (especially aviation fasteners), and more accurately detecting the anti-vibration performance of fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0035] in:

[0036] Figure 1 It is a three-dimensional diagram of the test bench and the support base in the fastener vibration test device of the present invention in the assembled state;

[0037] Figure 2 A three-dimensional diagram of a support base in a fastener vibration test device of the present invention;

[0038] Figure 3 A top view of a support base in a fastener vibration test device of the present invention;

[0039] Figure 4 It is a front view of the support base in the fastener vibration test device of the present invention;

[0040] Figure 5 A top view of a vibration plate in a fastener vibration test device of the present invention;

[0041] Figure 6 It is a front cross-sectional view of the vibration plate in the fastener vibration test device of the present invention.

[0042] The accompanying drawings in the present invention are:

[0043] 1. Test bench; 101. Base;

[0044] 1011, test table; 102, cushion block;

[0045] 103, cantilever; 104, fixed frame;

[0046] 105. Support rib; 106. Cover plate;

[0047] 107. Fixing hole; 2. Support seat;

[0048] 201, support seat body; 2011, baffle;

[0049] 2012, Placement Table; 2013, Gap;

[0050] 2014, accommodation space; 202, mounting plate;

[0051] 3. Vibration plate; 301. Mounting hole;

[0052] 302, groove; 303, gasket;

[0053] 304. first relative position identification portion; 4. fastener;

[0054] 401. A second relative position identification portion. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0056] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0058] Implementation Method 1

[0059] like Figures 1 to 6 As shown, the present invention provides a fastener vibration test device, which includes a test bench 1, a support seat 2, a vibration plate 3 and a vibration impact piece (not shown), the test bench 1 has a test bench surface 1011 and a cantilever 103, the cantilever 103 is arranged above the test bench surface 1011; the support seat 2 is fixedly arranged on the test bench surface 1011, and the support seat 2 has a accommodating space 2014 with an open top; the vibration plate 3 has at least one mounting hole 301, and the mounting hole 301 is used to mount the fastener to be tested. Part 4, a first relative position identification portion 304 is provided on the vibration disk 3, and a second relative position identification portion 401 is provided on the fastener 4, and the vibration disk 3 can be movably placed in the accommodating space 2014; the vibration impact member is provided on the cantilever 103 and is located above the support seat 2, and the vibration impact member is used to pass through the top opening of the accommodating space 2014 to impact and vibrate the vibration disk 3, thereby causing the vibration of the vibration disk, so as to obtain the relative position change of the first relative position identification portion 304 and the second relative position identification portion 401 before and after the vibration.

[0060] The present invention is provided with a mounting hole 301 on the vibration disk 3, and the fastener 4 to be tested is installed in the mounting hole 301, thereby simulating the installation state of the fastener 4 on the actual work station, and a first relative position identification part 304 and a second relative position identification part 401 are respectively provided on the vibration disk 3 and the fastener 4, and the relative position between the first relative position identification part 304 and the second relative position identification part 401 can be used as a reference for whether the fastener 4 and the vibration disk 3 have relative movement under the vibration state, and the vibration disk 3 and the fastener 4 thereon are placed in the accommodating space 2014 of the support seat 2, and the vibration impact part passes through the top opening of the accommodating space 2014 to impact the vibration disk 3, thereby causing the vibration of the vibration disk 3, and after a preset time, compare whether the relative position of the first relative position identification part 304 and the second relative position identification part 401 has changed or the amplitude of the change, so that the vibration resistance performance of the fastener 4 in the installation state can be known to ensure that the vibration resistance capacity meets the standard.

[0061] In addition, since the vibration disk 3 can be movably placed in the accommodating space 2014 of the support seat 2, when the vibration impact member impacts the vibration disk 3, the vibration disk 3 will vibrate and change its position in the accommodating space 2014. Therefore, the impact position of the vibration impact member on the vibration disk 3 is not exactly the same each time, and the vibration amplitude of the vibration disk 3 will also change, thereby being able to more realistically simulate the complex vibration working environment where the fastener 4 is located, making the test process closer to reality, and being able to better reflect the impact of vibration on the fastener 4, and more accurately detecting the anti-vibration performance of the fastener 4.

[0062] The fastener vibration test device of the present invention is particularly suitable for fasteners (i.e., aviation fasteners) 4 on aircraft, and is suitable for aviation fasteners such as rivets, screws, and bolts that fix various components on aircraft. The fastener vibration test device of the present application can simulate the complex vibration working environment of aviation fasteners, and transmit vibration to the aviation fasteners, so that they are subjected to reciprocating force, making the test process closer to the actual working conditions of the aircraft.

[0063] In an optional embodiment of the present invention, Figures 1 to 4 As shown, the support seat 2 includes a support seat body 201, and the top of the support seat body 201 is provided with a placement platform 2012, and the outer periphery of the placement platform 2012 is provided with an annular baffle 2011 extending upward, and the baffle 2011 and the placement platform 2012 are enclosed to form a top open accommodation space 2014. During the test, the vibration plate 3 is placed on the placement platform 2012 so that it is in a free and movable state, and the placement platform 2012 plays a role of stable support for the vibration plate 3; since the vibration plate 3 may be in a state of small amplitude vibration after being impacted by the vibration impact member, or may cause the vibration plate 3 to vibrate or bounce up with a large amplitude due to the impact intensity or impact position, therefore, a fence structure can be formed at the top edge of the placement platform 2012 through the baffle 2011, and the baffle 2011 plays a role of limiting and blocking the vibration plate 3, so as to avoid the vibration plate 3 from falling during the test and ensure the smooth progress of the test.

[0064] Further, such as Figures 2 to 4 As shown, the baffle plate 2011 has at least one notch 2013, the bottom of which extends to be flush with the top surface of the placement table 2012, and the notch 2013 is provided to facilitate the removal and replacement of the vibration plate 3 from the accommodating space 2014. Preferably, two notches 2013 are provided, and the two notches 2013 are arranged axially symmetrically on the baffle plate 2011, so as to facilitate manual removal or clamping of two relative positions of the outer wall of the vibration plate 3 by tools, and ensure the stable removal of the vibration plate 3.

[0065] Further, such as Figures 1 to 4As shown, the support seat 2 also includes a mounting plate 202, which can be a rectangular flat plate structure arranged in the horizontal direction. The lower surface of the support seat body 201 is connected to the upper surface of the mounting plate 202, and the bottom surface of the mounting plate 202 is connected to the test table 1011 through a plurality of evenly distributed bolts. The installation of the mounting plate 202 can increase the contact area between the support seat 2 and the test table 1011, and at the same time provide a position for the installation of the bolts, so as to ensure that the support seat 2 can be more stably installed on the test table 1011. Among them, the support seat body 201 and the mounting plate 202 can be, but are not limited to, integrally formed.

[0066] Further, such as Figures 1 to 4 As shown, the support seat body 201 is a hollow cylindrical structure, so that a circular ring-shaped placement platform 2012 is formed on the top of the support seat body 201. The hollow setting of the support seat body 201 can effectively reduce the material used for the support seat body 201, which helps to reduce consumables and reduce weight. Moreover, compared with the placement platform 2012 in the form of a solid column, the circular ring-shaped placement platform 2012 in the present invention can also reduce the contact support area between it and the vibration disk 3, which helps the vibration disk 3 to vibrate after being impacted.

[0067] In this embodiment, the diameter of the vibration plate 3 is larger than the inner diameter of the placement table 2012 and smaller than the outer diameter of the placement table 2012 to ensure that the vibration plate 3 can move freely in the accommodating space 2014 .

[0068] In an optional implementation of the present invention, the number of mounting holes 301 may be multiple, such as Figure 5 As shown, eight mounting holes 301 may be provided, and the eight mounting holes 301 are arranged in a circular pattern. A corresponding fastener 4 may be installed in each mounting hole 301, so that multiple fasteners 4 (such as Figure 5 The vibration resistance of 8 of them was tested.

[0069] Furthermore, according to the actual test requirements, the multiple mounting holes 301 can be configured to have different apertures and / or hole wall structures to meet the test requirements of fasteners 4 of different sizes and types. For example, different hole wall structures can be internal thread structures with different pitches to adapt to different fasteners 4 such as screws and bolts; different hole wall structures can also be internal wall structures with annular grooves or smooth circular holes to adapt to different types of fasteners 4 such as rivets and pins.

[0070] In an optional implementation of the present invention, Figure 5As shown, before the vibration disk 3 is subjected to impact vibration, the first relative position identification portion 304 cooperates with the second relative position identification portion 401 to form at least one continuous straight line. When the vibration disk 3 does not vibrate, it is ensured that the first relative position identification portion 304 and the second relative position identification portion 401 have a connected position. If the fastener 4 moves relative to the vibration disk 3 after vibration, the position where the first relative position identification portion 304 and the second relative position identification portion 401 are connected will separate, thereby making it easier to intuitively know that the fastener 4 has moved relative to the vibration disk 3; in addition, the vibration resistance of the fastener 4 can also be judged according to the degree of separation of the position where the first relative position identification portion 304 and the second relative position identification portion 401 are connected. Yes, if the position where the first relative position identification part 304 and the second relative position identification part 401 are connected remains unchanged, then the fastener 4 meets the anti-vibration requirements under the preset vibration conditions; if the position where the first relative position identification part 304 and the second relative position identification part 401 are connected is separated, and the separation distance is within the preset threshold, then the fastener 4 meets the anti-vibration requirements under the preset vibration conditions, but the staff can be reminded to pay more attention to the observation of the fastener 4 in the next vibration stage to know the time period when it exceeds the preset threshold; if the position where the first relative position identification part 304 and the second relative position identification part 401 are connected is separated, and the separation distance has exceeded the preset threshold, then the fastener 4 does not meet the anti-vibration requirements under the preset vibration conditions. Among them, the preset threshold of the separation distance between the position where the first relative position identification part 304 and the second relative position identification part 401 are connected can be set according to the types and requirements of different fasteners 4, and is not specifically limited here.

[0071] Furthermore, in some specific embodiments, Figure 5 As shown, before the vibration plate 3 is subjected to impact vibration, the first relative position marking portion 304 cooperates with the second relative position marking portion 401 to form two straight lines, and the two straight lines are distributed in a cross shape, making the marking more obvious and easier to observe.

[0072] In some embodiments of the present invention, Figure 6 As shown, a groove 302 is provided in the middle of the bottom surface of the vibration plate 3, and a gasket 303 can be arranged in the groove 302. At least part of the fastener 4 is used to pass through the mounting hole 301 and be formed on the gasket 303, so as to simulate the influence on the anti-vibration performance of the fastener 4 when the gasket 303 is added. Furthermore, the gasket 303 of different materials can be replaced, so as to simulate the influence on the anti-vibration performance of the fastener 4 when installed on the gasket 303 of different materials.

[0073] In an optional embodiment of the present invention, Figure 1As shown, the test bench 1 includes a base 101, a test bench surface 1011 is formed on one side of the top of the base 101, and a support rib 105 arranged in the vertical direction is arranged on the other side of the top of the base 101; the cantilever 103 is arranged in the horizontal direction, and the cantilever 103 has a first end and a second end opposite to each other (i.e., the two ends of the cantilever 103), the first end of the cantilever 103 is connected to a fixing frame 104 located on the top of the support rib 105, and the second end of the cantilever 103 extends to above the test bench surface 1011, and a vibration impact piece is arranged at the second end of the cantilever 103.

[0074] Specifically, the base 101, the support ribs 105, the fixing frame 104, and the cantilever 103 can be formed by welding multiple steel plates. The base 101 and the support ribs 105, the support ribs 105 and the fixing frame 104, and the fixing frame 104 and the cantilever 103 can be fixedly connected by multiple bolts. The specific forming method and connection method of the base 101, the support ribs 105, the fixing frame 104, and the cantilever 103 are not limited here.

[0075] Further, such as Figure 1 As shown, two cover plates 106 are provided at the second end of the cantilever 103, and at least one of the two cover plates 106 is detachably provided (such as the first cover plate is fixedly connected to the second end of the cantilever 103, and the second cover plate is detachably connected to the first cover plate by bolts). When the two cover plates 106 are in an assembled state, the two cover plates 106 cooperate to form a fixing hole 107, and the vibration impact piece can be fixedly installed through the fixing hole 107.

[0076] In some optional embodiments of the present invention, the vibration impact member includes a rivet gun, the main body of the rivet gun is installed in the fixing hole 107, and the impact head of the rivet gun is installed downward, so that the vibration plate 3 can be impacted by the impact head of the rivet gun.

[0077] The characteristics and advantages of the fastener vibration test device of the present invention are:

[0078] 1. The fastener vibration test device places the vibration plate 3 and the fastener 4 installed thereon in the accommodating space 2014 of the support seat 2, and impacts the vibration plate 3 through the vibration impact piece. The vibration plate 3 vibrates in the accommodating space 2014 due to the impact, and compares the relative position of the first relative position identification part 304 and the second relative position identification part 401 after the vibration to see whether there is a change or the amplitude of the change, so as to know the vibration resistance performance of the fastener 4 in the installed state, so as to ensure that the vibration resistance capacity meets the standard.

[0079] Second, the fastener vibration test device can more realistically simulate the complex vibration working environment of the fastener 4, making the test process closer to reality, better reflecting the impact of vibration on the fastener 4, and more accurately detecting the anti-vibration performance of the fastener 4.

[0080] 3. The fastener vibration test device has a simple structure and principle, and can efficiently and accurately complete the vibration resistance test of fasteners. It can simulate the complex vibration environment that aviation fasteners are subjected to during installation, maintenance, and flight, and is especially suitable for evaluating the vibration resistance of aviation fasteners.

[0081] Implementation Method 2

[0082] The present invention provides a fastener vibration test method, which uses the above-mentioned fastener vibration test device to perform a fastener vibration test, and the fastener vibration test method comprises the following steps:

[0083] Step S1: Install the fastener 4 to be tested into the mounting hole 301 on the vibration plate 3, and the fastener 4 is firmly connected to the vibration plate 3;

[0084] Before step S1, a vibration plate 3 with a corresponding mounting hole 301 is selected according to the fastener 4 to be detected, and then the fastener 4 is installed in the mounting hole 301 to ensure that the fastener 4 is firmly installed on the vibration plate 3 to simulate the stable installation state of the fastener 4 under actual working conditions.

[0085] Step S2: respectively setting a first relative position identification portion 304 and a second relative position identification portion 401 on the vibration plate 3 and the fastener 4, and recording a first relative position of the first relative position identification portion 304 and the second relative position identification portion 401;

[0086] Step S3: placing the vibration plate 3 in the accommodation space 2014 of the support base 2;

[0087] Specifically, the vibration plate 3 can be placed in the accommodating space 2014 from the top opening of the accommodating space 2014 to the bottom bracket, ensuring that the vibration plate 3 can move automatically in the accommodating space 2014.

[0088] Step S4: installing a vibration impact piece on the cantilever 103, and adjusting the distance between the vibration impact piece and the vibration plate 3 to a preset distance;

[0089] Specifically, when the vibration impact member is a rivet gun, the distance between the impact head of the rivet gun and the vibration plate 3 is adjusted to a preset distance in the vertical direction. By adjusting the distance between the impact head of the rivet gun and the vibration plate 3 to be different, the vibration plate 3 is subjected to different impact intensities, so as to simulate the vibration plate 3 in different vibration working conditions.

[0090] Step S5: starting the vibration impact member to impact the vibration plate 3, so that the vibration plate 3 vibrates in the accommodating space 2014;

[0091] Step S6: After a preset time, stop the vibration impact member from impacting the vibration plate 3, record the second relative position of the first relative position identification portion 304 and the second relative position identification portion 401, and compare the second relative position with the first relative position.

[0092] Specifically, after vibration, the vibration resistance of the fastener 4 is judged according to the degree of separation of the position where the first relative position identification part 304 and the second relative position identification part 401 are connected. If the position where the first relative position identification part 304 and the second relative position identification part 401 are connected remains unchanged, the fastener 4 meets the vibration resistance requirements under the preset vibration conditions; if the position where the first relative position identification part 304 and the second relative position identification part 401 are connected is separated, and the separation distance is within the preset threshold, the fastener 4 meets the vibration resistance requirements under the preset vibration conditions, but the staff can be reminded to pay more attention to the observation of the fastener 4 in the next vibration stage to know the period of time when it exceeds the preset threshold; if the position where the first relative position identification part 304 and the second relative position identification part 401 are connected is separated, and the separation distance has exceeded the preset threshold, the fastener 4 does not meet the vibration resistance requirements under the preset vibration conditions.

[0093] Furthermore, the vibration impact piece impacts the vibration plate 3 intermittently, stops impacting the vibration plate 3 at a preset time interval, and records the second relative position of the first relative position identification part 304 and the second relative position identification part 401 after each stop. After the vibration, the staff can directly know by visual inspection whether the fastener 4 moves relative to the vibration plate 3 (such as: overall rotation, core rod rotation, axial movement, or the fastener 4 body is damaged due to vibration, etc.).

[0094] Furthermore, from front to back, the impact on the vibration disk 3 is stopped at time points of 1 / 2min, 2min, 5min, 10min, and 20min, and the relative position between the fastener 4 and the vibration disk 3 is observed after each impact stop to determine whether the fastener 4 moves relative to the vibration disk 3 or whether the fastener 4 body is damaged due to vibration.

[0095] The fastener vibration test method of the present invention can truly restore the vibration conditions to which the aviation fasteners are subjected after being assembled in place. The test process is close to reality, can well reflect the impact of vibration on the aviation fasteners, and can accurately determine the vibration resistance of the aviation fasteners to ensure that the vibration resistance meets the standards.

[0096] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0097] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0098] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the embodiments without departing from the spirit and scope disclosed by the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A fastener vibration test device, characterized in that: The fastener vibration test device comprises: A test bench, the test bench having a test bench surface and a cantilever located above the test bench surface; A support base, the support base is arranged on the test table, and the support base has a receiving space with an open top; A vibration plate, wherein the vibration plate has at least one mounting hole, wherein the mounting hole is used to mount a fastener to be detected, wherein a first relative position identification portion is disposed on the vibration plate, and a second relative position identification portion is disposed on the fastener, and wherein the vibration plate can be movably placed in the accommodating space; A vibration impact piece, wherein the vibration impact piece is arranged on the cantilever and located above the support seat, and the vibration impact piece is used to impact the vibration plate through the top opening of the accommodating space, thereby causing the vibration plate to vibrate, so as to obtain the relative position change between the first relative position marking part and the second relative position marking part before and after the vibration.

2. The fastener vibration test device according to claim 1, characterized in that: The support seat comprises a support seat body, the top of the support seat body is provided with a placement platform, the outer periphery of the placement platform is provided with an annular baffle extending upward, and the baffle and the placement platform are combined to form the accommodating space with an open top.

3. The fastener vibration test device according to claim 2, characterized in that: The baffle has at least one notch.

4. The fastener vibration test device according to claim 2, characterized in that: The support seat also includes a mounting plate, the top of the support seat body is connected to the top surface of the mounting plate, and the bottom surface of the mounting plate is connected to the test table surface.

5. The fastener vibration test device according to claim 2, characterized in that: The support base body is a hollow columnar structure, so as to form the annular placement platform on the top of the support base body; The diameter of the vibration plate is larger than the inner diameter of the placement table and smaller than the outer diameter of the placement table.

6. The fastener vibration test device according to claim 1, characterized in that: There are multiple mounting holes, and the multiple mounting holes have different hole diameters and / or hole wall structures.

7. The fastener vibration test device according to claim 1, characterized in that: Before the vibration plate is subjected to impact vibration, the first relative position marking portion cooperates with the second relative position marking portion to form at least one continuous straight line.

8. The fastener vibration test device according to claim 1, characterized in that: The test bench comprises a base, one side of the top of the base forms the test bench surface, and the other side of the top of the base is provided with a support rib; The cantilever has a first end and a second end opposite to each other. The first end of the cantilever is connected to a fixing frame located on the top of the supporting rib. The second end of the cantilever extends above the test table. The vibration impact member is arranged at the second end of the cantilever.

9. The fastener vibration test device according to claim 8, characterized in that: The second end of the cantilever is provided with two cover plates, at least one of the two cover plates is detachable, and the two cover plates cooperate to form a fixing hole in the assembled state, and the fixing hole is used to install the vibration impact member.

10. The fastener vibration test device according to claim 1, characterized in that: The vibration impact member comprises a rivet gun, and the impact head of the rivet gun is installed downward so as to impact the vibration plate through the impact head of the rivet gun.

11. A fastener vibration test method, using the fastener vibration test device according to any one of claims 1 to 10 to perform a fastener vibration test, characterized in that: The fastener vibration test method comprises the following steps: Install the fastener to be tested in the mounting hole on the vibration plate, and the fastener is firmly connected to the vibration plate; A first relative position identification portion and a second relative position identification portion are respectively provided on the vibration plate and the fastener, and a first relative position of the first relative position identification portion and the second relative position identification portion is recorded; Placing the vibration plate in the accommodation space of the support seat; Installing a vibration impact piece on the cantilever, and adjusting the distance between the vibration impact piece and the vibration plate to a preset distance; Starting the vibration impact member to impact the vibration plate, so that the vibration plate vibrates in the accommodating space; After a preset time, the vibration impact member stops impacting the vibration plate, a second relative position between the first relative position identification portion and the second relative position identification portion is recorded, and the second relative position is compared with the first relative position.

12. The fastener vibration test method according to claim 11, characterized in that: The vibration impact member impacts the vibration plate intermittently, stops impacting the vibration plate at preset time intervals, and records the second relative position of the first relative position identification portion and the second relative position identification portion after each stop.

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