CN212007720U - High-frequency vibration test device - Google Patents
High-frequency vibration test device Download PDFInfo
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- CN212007720U CN212007720U CN202020946607.XU CN202020946607U CN212007720U CN 212007720 U CN212007720 U CN 212007720U CN 202020946607 U CN202020946607 U CN 202020946607U CN 212007720 U CN212007720 U CN 212007720U
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Abstract
The utility model discloses a high-frequency vibration test device, include: an oil cylinder; the mount pad, be equipped with the joint bearing mounting hole in, the opening is injectd in two stabilizer blade cooperations of mount pad, be equipped with the regulation hole on every stabilizer blade respectively, joint bearing rotatably locates the joint bearing mounting hole around the axial of joint bearing mounting hole, the one end of connecting seat links to each other with joint bearing's tip, first bolster is located open-ended one side and forms the annular member that sets up with the regulation hole is coaxial, be equipped with in the fastener along its axial extension's installation passageway, the one end of fastener is located an regulation hole and links to each other with a stabilizer blade detachably, the other end of fastener stretches out the regulation hole and ends with first bolster, an regulation hole is passed in proper order to the one end of regulating part, the installation passageway, stretch into another regulation hole behind opening and the first bolster. This high-frequency vibration test device not only can be under long-term high-frequency vibration, and the fastener is difficult not hard up, can also adjust the opening size according to actual conditions.
Description
Technical Field
The utility model relates to a testing machine field, more specifically relates to a high-frequency vibration test device.
Background
In the testing machine industry, often need carry out the high-frequency vibration test when whole machine or structure are tested, the executor chooses for use servo cylinder to carry out power load control and displacement control mostly, and when using the hydro-cylinder of articulated mounting structure form, the opening size that articulated bearing arouses on it influences greatly the test result to when adjusting opening size, adjust inefficiency, the operation is inconvenient etc. and all becomes the problem that awaits a great deal with solution.
There is the clearance between some joint bearing outer lane and the bearing frame, there is the clearance between joint bearing inner circle and the outer lane, has the clearance between joint bearing inner circle and the round pin axle, and joint bearing inner circle can the free rotation in order to guarantee that the atress direction is axial all the time, because of the existence in above-mentioned clearance, can influence the collection of actuator vibration displacement volume. In the existing structures, slotting treatment is carried out in the pin hole direction of the joint bearing, a pre-tightening screw penetrates through two sides of a gap, the gap width can be adjusted by screwing and unscrewing the screw, and all gaps of the joint bearing are adjusted, but the screw pre-tightening force of the structure is difficult to control, and if the set pre-tightening force is large, the joint bearing cannot rotate or even deforms; if the set pretightening force is small, gaps at all parts of the joint bearing cannot be eliminated, and a pretightening screw is easy to loosen when vibrating, namely, the structure is not suitable for pretightening under the working condition of high-frequency vibration, and the tightness of the existing joint bearing during installation cannot be controlled.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.
Therefore, the utility model provides a high-frequency vibration test device, this high-frequency vibration test device convenient to use, the assembly is simple.
According to the utility model discloses high-frequency vibration test device, include: the oil cylinder comprises a cylinder barrel and a piston rod movably arranged in the cylinder barrel; the mounting seat is connected with the cylinder barrel and/or the piston rod, a joint bearing mounting hole which penetrates through the mounting seat along the thickness direction and is provided with an opening at one side is formed in the mounting seat, the opening is defined by the two support legs of the mounting seat in a matched mode, an adjusting hole communicated with the opening is formed in each support leg, the inner wall surface of the joint bearing mounting hole is formed into a first arc-shaped surface, second arc-shaped surfaces are arranged at the positions, adjacent to the opening, of the two ends of the first arc-shaped surface, and the curvature of each second arc-shaped surface is larger than that of the first arc-shaped surface; the joint bearing is formed into a column shape and is rotatably arranged in the joint bearing mounting hole around the axial direction of the joint bearing mounting hole, and two ends of the joint bearing extend out of the joint bearing mounting hole; one end of the connecting seat is connected with the end part of the knuckle bearing, and the other end of the connecting seat is connected with the piece to be detected; the first buffer piece is positioned on one side of the opening and is formed into a ring-shaped piece which is coaxially arranged with the adjusting hole; the fastener is formed into a hollow column shape, an installation channel extending along the axial direction of the fastener is arranged in the fastener, one end of the fastener is positioned in the adjusting hole and is detachably connected with the supporting leg, and the other end of the fastener extends out of the adjusting hole and is abutted against the first buffer piece; the regulating part, the regulating part forms the column, the one end of regulating part passes in proper order one the regulation hole the installation passageway the opening with stretch into another behind the first bolster the regulation hole, the regulating part with another stabilizer blade detachably links to each other in order to adjust the open-ended size.
According to the high-frequency vibration testing device provided by the embodiment of the utility model, the oil cylinder, the mounting seat, the knuckle bearing, the connecting seat, the first buffer part, the fastener and the adjusting part are combined, so that the pretightening force can be controlled when the size of the opening is adjusted, and the knuckle bearing cannot be damaged due to overlarge torque; moreover, the problem that the pre-tightening screw is easy to loosen due to long-term high-frequency vibration can be prevented; in addition, the size of the opening can be adjusted according to test data in the using process, or the size of the opening can be adjusted when the joint bearing is worn after long-term use. The high-frequency vibration test device is simple in structure, convenient to assemble and use, capable of prolonging the service life and reducing the use cost.
According to an embodiment of the invention, the mounting seat is detachably connected with the cylinder barrel and/or the piston rod through a thread or a screw.
According to an embodiment of the present invention, one side of the first buffer member is spaced apart from one of the legs, and the other side of the first buffer member abuts against the other of the legs.
According to an embodiment of the present invention, the first buffer member includes: a first sealing member formed as a hollow cylindrical member, a side of the first sealing member adjacent to the other leg being formed as a flat surface and fitting with the other leg, a side of the first sealing member adjacent to the opening being formed as a protruding spherical surface; the second sealing element is formed into a hollow cylindrical piece, one side of the second sealing element, which is adjacent to the position of the first sealing element, is formed into a spherical surface which is inwards sunken and is attached to the first sealing element, and one side of the second sealing element, which is adjacent to the position of the fastening element, is formed into a plane and is abutted against the fastening element.
According to an embodiment of the invention, the first buffer is formed as an alloy steel.
According to the utility model discloses an embodiment, be equipped with the third arcwall face on the internal face of joint bearing mounting hole, the camber of third arcwall face is greater than the camber of first arcwall face.
According to the utility model discloses an embodiment, one the stabilizer blade dorsad the one end of opening place direction is equipped with the counter bore, high-frequency vibration test device still includes: the second buffer piece forms into the cavity loop forming element and locates the counter bore, the second buffer piece cover is located the periphery of regulating part.
According to an embodiment of the invention, the second buffer member is formed as an alloy member.
According to an embodiment of the present invention, the fastener is a threaded sleeve, and the adjusting member is a screw.
According to the utility model discloses an embodiment, be equipped with along its axial interval distribution's scale mark on the outer wall of fastener.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a high-frequency vibration testing apparatus according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a high frequency vibration testing apparatus according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a high-frequency vibration testing apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an angle of a mounting seat of the high-frequency vibration testing apparatus according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of another angle of the mounting seat of the high-frequency vibration testing apparatus according to the embodiment of the present invention.
Reference numerals:
a high-frequency vibration test apparatus 100;
an oil cylinder 10; a cylinder barrel 11; a piston rod 12;
a mounting seat 20; joint bearing mounting holes 21; a first arcuate face 211; a second arcuate surface 212; a third arcuate surface 213; the legs 22; an adjustment hole 221; a counterbore 222; an opening 23;
a joint bearing 30;
a connecting seat 40;
a first buffer 50; a first seal member 51; a second seal 52;
a fastener 60;
an adjusting member 70;
a second dampener 80.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to 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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The high-frequency vibration test apparatus 100 according to an embodiment of the present invention is described in detail below with reference to the drawings.
As shown in fig. 1 to 5, the high frequency vibration testing apparatus 100 according to the embodiment of the present invention includes: the damping device comprises an oil cylinder 10, a mounting seat 20, a joint bearing 30, a connecting seat 40, a first buffering member 50, a fastening member 60 and an adjusting member 70.
Specifically, the oil cylinder 10 includes a cylinder 11 and a piston rod 12 movably disposed in the cylinder 11, the mounting base 20 is connected to the cylinder 11 and/or the piston rod 12, a joint bearing mounting hole 21 penetrating through the mounting base 20 along a thickness direction thereof and having an opening 23 at one side is disposed in the mounting base 20, two support legs 22 of the mounting base 20 cooperate to define the opening 23, each support leg 22 is provided with an adjusting hole 221 communicating with the opening 23, an inner wall surface of the joint bearing mounting hole 21 is formed as a first arc surface 211, two ends of the first arc surface 211 adjacent to the opening 23 are provided with second arc surfaces 212, a curvature of the second arc surfaces 212 is greater than a curvature of the first arc surfaces 211, the joint bearing 30 is formed in a columnar shape and rotatably disposed in the joint bearing mounting hole 21 around an axial direction of the joint bearing mounting hole 21, two ends of the joint bearing 30 extend out of the joint bearing mounting hole 21, one end of the connecting base 40 is, the other end of connecting seat 40 links to each other with waiting to detect the piece, first bolster 50 is located one side of opening 23 and forms the annular member with adjusting hole 221 coaxial setting, fastener 60 forms hollow column, be equipped with along its axial extension's installation passageway in the fastener 60, the one end of fastener 60 is located an adjusting hole 221 and links to each other with a stabilizer blade 22 detachably, the other end of fastener 60 stretches out adjusting hole 221 and arrests with first bolster 50, adjusting member 70 forms the column, the one end of adjusting member 70 passes an adjusting hole 221 in proper order, the installation passageway, stretch into another adjusting hole 221 behind opening 23 and the first bolster 50, adjusting member 70 links to each other with another stabilizer blade 22 detachably in order to adjust the size of opening 23.
In other words, the high-frequency vibration testing apparatus 100 according to the embodiment of the present invention mainly comprises the oil cylinder 10, the mounting seat 20, the joint bearing 30, the connecting seat 40, the first buffer member 50, the fastening member 60, and the adjusting member 70, and the high-frequency vibration testing apparatus 100 can be used for performing a high-frequency vibration test on a whole machine or a structural member. The cylinder 10 includes a cylinder tube 11 and a piston rod 12. The mounting seat 20 can be connected to the cylinder 11 and/or the piston rod 12, and the position of the mounting seat on the cylinder 10 can be set according to the use requirement. The mount 20 is provided with a joint bearing mounting hole 21 penetrating in the thickness direction thereof and having an opening 23 at one side. The mounting base 20 is further provided with two spaced apart and oppositely disposed legs 22, and the two legs 22 cooperatively define an opening 23 therebetween. The two legs 22 are respectively provided with an adjusting hole 221 communicated with the opening 23, and the adjusting piece 70 sequentially passes through one adjusting hole, the opening 23 and the other adjusting hole to realize locking of the opening 23 and size adjustment.
When the joint bearing device is used, the joint bearing 30 can be firstly installed in the joint bearing installation hole 21, then the end part of the joint bearing 30 is connected with the connecting seat 22, and the connecting seat 40 can be connected with a piece to be detected, so that the indirect connection between the oil cylinder 10 and the piece to be detected is realized. The piece to be detected can be a plate-shaped piece and the like, and the oil cylinder 10 can be used as a vibration source when the piece to be detected is subjected to a high-frequency vibration test.
In order to ensure controllable pretightening force in the process of adjusting the size of the opening 23 and prevent the adjusting piece 70 from being difficult to loosen due to long-term high-frequency vibration, on one hand, a fastening piece 60 is arranged in one adjusting hole 221, the fastening piece 60 can be detachably connected with one supporting leg 22, a columnar mounting channel extending along the axial direction of the fastening piece 60 is arranged in the fastening piece 60, when the adjusting piece is used, one end of the adjusting piece 70 sequentially penetrates through one adjusting hole 221, the mounting channel and the opening 23 and then extends into the other adjusting hole 221, so that the adjusting piece 70 can be effectively prevented from loosening, and the size of the opening 23 can be adjusted after long-term use and in the using process; on the other hand, the first buffer member 50 is installed in the opening 23, when in use, the first buffer member 50 can be sleeved on the outer periphery of the adjusting member 70, and the other end of the fastening member 60 extends out of the adjusting hole 221 and abuts against the first buffer member 50, so as to prevent the mounting base 20 from being deformed due to vibration and moment; on the other hand, the inner wall surface of the joint bearing mounting hole 21 may be formed as a first arc-shaped surface 211, the positions of the two ends of the first arc-shaped surface 211 adjacent to the opening 23 are provided with second arc-shaped surfaces 212, the curvature of the second arc-shaped surfaces 212 is greater than that of the first arc-shaped surfaces 211, and when the joint bearing 30 is pre-tightened, the outer circumferential surface of the joint bearing 30 can be better attached to the inner wall surface of the joint bearing mounting hole 21.
It should be noted that the cross section of the first arc-shaped surface 211 may be a preferential arc, and the second arc-shaped surface 212 may be formed by milling. The adjusting member 70 can provide a gap-eliminating pretightening force, and the joint bearing 30 can ensure a movement angle between the mounting seat 20 and the connecting seat 40.
Therefore, according to the high-frequency vibration testing device 100 provided by the embodiment of the utility model, the combination of the oil cylinder 10, the mounting seat 20, the joint bearing 30, the connecting seat 40, the first buffer member 50, the fastening member 60 and the adjusting member 70 is adopted, so that the pretightening force can be controlled when the size of the opening 23 is adjusted, and the joint bearing 30 cannot be damaged due to overlarge torque; moreover, the problem that the pre-tightening screw is easy to loosen due to long-term high-frequency vibration can be prevented; also, the size of the opening 23 may be adjusted according to test data during use, or the size of the opening 23 may be adjusted when the spherical plain bearing 30 is worn after long-term use. The high-frequency vibration test device 100 is simple in structure, convenient to assemble and use, capable of prolonging the service life and reducing the use cost.
According to the utility model discloses an embodiment, mount pad 20 passes through screw thread or screw detachably with cylinder 11 and/or piston rod 12 and links to each other, that is to say, the mounted position between mount pad 20 and hydro-cylinder 10 can be adjusted according to actual demand, and the mounting means is simple and convenient, the operation of being convenient for.
In some embodiments of the present invention, one side of the first buffer member 50 is spaced apart from one of the legs 22, and the other side of the first buffer member 50 abuts against the other leg 22, that is, when the first buffer member 50 is mounted to the opening 23, the first buffer member 50 is spaced apart from one of the legs 22 and abuts against the other leg 22, so as to expand the control range of the fastening member 60.
As shown in fig. 2, according to an embodiment of the present invention, the first buffer member 50 includes: the first sealing element 51 and the second sealing element 52, the first sealing element 51 is formed into a hollow cylindrical member, one side of the first sealing element 51 adjacent to the other supporting leg 22 is formed into a plane and is jointed with the other supporting leg 22, one side of the first sealing element 51 adjacent to the opening 23 is formed into a protruding spherical surface, the second sealing element 52 is formed into a hollow cylindrical member, one side of the second sealing element 52 adjacent to the first sealing element 51 is formed into a spherical surface which is inwards concave and is jointed with the first sealing element 51, one side of the second sealing element 52 adjacent to the fastening element 60 is formed into a plane and is butted with the fastening element 60, and by adopting the spherical surface matching, the spherical surface can compensate the non-parallelism of the two planes of the opening 23 caused by different pretightening forces.
In some embodiments of the present invention, the first buffer 50 is formed of alloy steel, and the surface deformation of the mounting seat 40 caused by vibration and moment can be effectively prevented by performing the surface hardening process.
As shown in fig. 4, according to an embodiment of the present invention, a third arc surface 213 is disposed on an inner wall surface of the joint bearing mounting hole 21, and a curvature of the third arc surface 213 is larger than a curvature of the first arc surface 211.
According to an embodiment of the present invention, a counter bore 222 is disposed at an end of the supporting leg 22 opposite to the direction of the opening 23, the high frequency vibration testing apparatus 100 further includes a second buffering member 80, the second buffering member 80 is formed as a hollow annular member and is disposed in the counter bore 222, and the second buffering member 80 is sleeved on the outer periphery of the adjusting member.
Further, the second cushion member 80 is formed of an alloy member, and the surface thereof is hardened, so that the surface deformation of the mounting seat 40 due to vibration and moment can be effectively prevented.
Alternatively, the fastener 60 is a threaded sleeve and the adjustment member 70 is a screw, wherein the fastener 60 may be provided with a fine thread, and the size of the opening 23 can be adjusted by matching the adjustment member 70.
The utility model discloses an among some concrete implementation manners, be equipped with on the outer wall of fastener 60 along its axially spaced apart distributed scale mark, can the snap judgments degree of regulation, the record and the control of being convenient for through setting up the scale mark.
The assembly and use of the high-frequency vibration testing apparatus 100 according to the embodiment of the present invention will be described in detail below.
First, the first and second packing members 51 and 52 are combined and then placed in the opening 23, the fastener 60 is installed, the distance is adjusted to maintain a certain gap with the first cushion member 50, the second cushion member 80 and the adjusting member 70 are installed, and a predetermined torque is applied.
After a long period of use, the knuckle bearing 30 is worn to increase the size of the opening 23, and the adjusting member 70 is loosened to adjust the gap between the fastening member 60 and the first buffer member 50, and then a predetermined torque is applied to complete the gap adjustment process.
In summary, according to the high-frequency vibration testing apparatus 100 of the embodiment of the present invention, the pretightening force can be controlled during the process of adjusting the opening 23; moreover, under the condition of long-term high-frequency vibration of the oil cylinder 10, the adjusting piece 70 is not easy to loosen; and the opening 23 can be adjusted according to the test data in the using process, or the knuckle bearing 30 has the wear adjustable opening 23 after long-term use; in addition, the first buffer member 50 has a compensation effect on the unparallel of the two planes of the opening 23 caused by different pretightening forces; in addition, the second arc-shaped surface 212 and the third arc-shaped surface 213 are arranged on the first arc-shaped surface 211 in a milling manner, so that the joint bearing 30 can be better attached to the mounting seat 20 during pre-tightening.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A high-frequency vibration test device, comprising:
the oil cylinder comprises a cylinder barrel and a piston rod movably arranged in the cylinder barrel;
the mounting seat is connected with the cylinder barrel and/or the piston rod, a joint bearing mounting hole which penetrates through the mounting seat along the thickness direction and is provided with an opening at one side is formed in the mounting seat, the opening is defined by the two support legs of the mounting seat in a matched mode, an adjusting hole communicated with the opening is formed in each support leg, the inner wall surface of the joint bearing mounting hole is formed into a first arc-shaped surface, second arc-shaped surfaces are arranged at the positions, adjacent to the opening, of the two ends of the first arc-shaped surface, and the curvature of each second arc-shaped surface is larger than that of the first arc-shaped surface;
the joint bearing is formed into a column shape and is rotatably arranged in the joint bearing mounting hole around the axial direction of the joint bearing mounting hole, and two ends of the joint bearing extend out of the joint bearing mounting hole;
one end of the connecting seat is connected with the end part of the knuckle bearing, and the other end of the connecting seat is connected with the piece to be detected;
the first buffer piece is positioned on one side of the opening and is formed into a ring-shaped piece which is coaxially arranged with the adjusting hole;
the fastener is formed into a hollow column shape, an installation channel extending along the axial direction of the fastener is arranged in the fastener, one end of the fastener is positioned in the adjusting hole and is detachably connected with the supporting leg, and the other end of the fastener extends out of the adjusting hole and is abutted against the first buffer piece;
the regulating part, the regulating part forms the column, the one end of regulating part passes in proper order one the regulation hole the installation passageway the opening with stretch into another behind the first bolster the regulation hole, the regulating part with another stabilizer blade detachably links to each other in order to adjust the open-ended size.
2. A high-frequency vibration testing apparatus according to claim 1, wherein said mounting seat is detachably connected to said cylinder tube and/or said piston rod by means of a thread or a screw.
3. A high-frequency vibration testing apparatus according to claim 1, wherein one side of said first buffer member is spaced apart from one of said legs, and the other side of said first buffer member abuts the other of said legs.
4. A high-frequency vibration testing apparatus according to claim 3, wherein said first buffer member comprises:
a first sealing member formed as a hollow cylindrical member, a side of the first sealing member adjacent to the other of the legs being formed as a flat surface and being in abutment with the other of the legs, a side of the first sealing member adjacent to the opening being formed as a protruding spherical surface;
the second sealing element is formed into a hollow cylindrical piece, one side of the second sealing element, which is adjacent to the position of the first sealing element, is formed into a spherical surface which is inwards sunken and is attached to the first sealing element, and one side of the second sealing element, which is adjacent to the position of the fastening element, is formed into a plane and is abutted against the fastening element.
5. A high-frequency vibration testing apparatus according to claim 1, wherein said first buffer is formed of alloy steel.
6. The high-frequency vibration testing device according to claim 1, wherein a third arc-shaped surface is provided on an inner wall surface of the joint bearing mounting hole, and a curvature of the third arc-shaped surface is larger than a curvature of the first arc-shaped surface.
7. The high-frequency vibration testing device according to claim 1, wherein a counter bore is provided at an end of the supporting leg facing away from the opening, and the high-frequency vibration testing device further comprises:
the second buffer piece forms into the cavity loop forming element and locates the counter bore, the second buffer piece cover is located the periphery of regulating part.
8. A high-frequency vibration testing apparatus according to claim 7, wherein said second buffer member is formed as an alloy member.
9. A high frequency vibration testing apparatus according to claim 1, wherein said fastening member is a threaded sleeve and said adjusting member is a screw.
10. A high-frequency vibration testing apparatus according to claim 1, wherein the outer wall surface of said fastening member is provided with graduations spaced apart along the axial direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946607.XU CN212007720U (en) | 2020-05-29 | 2020-05-29 | High-frequency vibration test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946607.XU CN212007720U (en) | 2020-05-29 | 2020-05-29 | High-frequency vibration test device |
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| Publication Number | Publication Date |
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| CN212007720U true CN212007720U (en) | 2020-11-24 |
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| CN202020946607.XU Active CN212007720U (en) | 2020-05-29 | 2020-05-29 | High-frequency vibration test device |
Country Status (1)
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| CN (1) | CN212007720U (en) |
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