CN215785038U - Screening tool for rigidity consistency of shock absorber - Google Patents
Screening tool for rigidity consistency of shock absorber Download PDFInfo
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- CN215785038U CN215785038U CN202122201539.1U CN202122201539U CN215785038U CN 215785038 U CN215785038 U CN 215785038U CN 202122201539 U CN202122201539 U CN 202122201539U CN 215785038 U CN215785038 U CN 215785038U
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Abstract
The application provides screening frock of shock absorber rigidity uniformity, shock absorber rigidity uniformity screening mechanism includes: base 1, slide bearing 2, spring rand 3, sliding shaft 4, shock absorber bottom surface mount pad 5, shock absorber 6, the horizontal mount pad 7 of shock absorber, wherein: a first shock absorber mounting surface and a second shock absorber mounting surface are respectively arranged in the vertical direction of two sides of the base 1; the sliding shaft 4 penetrates through the two sliding bearings 2 and is used as a load of the shock absorber 6, a first mechanical interface is arranged at the end part of the sliding shaft 4, and a second mechanical interface is arranged at the middle part of the sliding shaft 4; one end of the transverse shock absorber mounting seat 7 is fixedly connected with the sliding shaft 4, and the other end of the transverse shock absorber mounting seat 7 is provided with a mechanical interface connected with the top surface of the shock absorber 6 for screening the transverse rigidity consistency of the shock absorber 6.
Description
Technical Field
The invention relates to a screening mechanism for rigidity consistency of a shock absorber, in particular to a screening tool for rigidity consistency of a shock absorber.
Background
In the development and application of the laser inertial navigation vibration reduction system, higher and higher requirements are put forward on the design precision of a support center of the vibration reduction system. However, in the vibration damping system composed of a plurality of vibration dampers, the accurate design of the support center of the vibration damping system is seriously influenced by the non-uniformity of the rigidity of the vibration dampers at different positions and the non-uniformity of the axial rigidity and the transverse rigidity of the vibration dampers. In particular, in the system using the rubber damper, since the processing dimensional accuracy of the rubber polymer material is difficult to control, even in the same batch of rubber dampers, the variation of the rigidity in the same direction is large. Meanwhile, the axial stiffness and the transverse stiffness of the same damper are greatly different.
Disclosure of Invention
In view of this, in order to solve the problem of accurate design of the support center of the vibration damping system, the application provides a vibration damper rigidity consistency screening mechanism, which can provide respective measurement of the axial rigidity and the transverse rigidity of the vibration damper, and improve the design accuracy of the support center of the vibration damping system through measurement and screening of the rigidity of a plurality of vibration dampers.
The application provides screening frock of shock absorber rigidity uniformity, shock absorber rigidity uniformity screening mechanism includes: base 1, slide bearing 2, spring rand 3, sliding shaft 4, shock absorber bottom surface mount pad 5, shock absorber 6, the horizontal mount pad 7 of shock absorber, wherein:
the base 1 is a body structure of the screening tool for the rigidity consistency of the shock absorber, the bottom surface of the base 1 is of a flat plate structure, two mounting supports are vertically arranged on the base 1, the mounting supports are of hollow structures, and the hollow structures of the two mounting supports are coaxially arranged and used for mounting the sliding bearing 2; the two ends of the mounting supports of the sliding bearings 2 are respectively provided with a spring retainer ring 3 for respectively fixing the two sliding bearings 2 on the two mounting supports;
a first shock absorber mounting surface and a second shock absorber mounting surface are respectively arranged in the vertical direction of two sides of the base 1, the first shock absorber mounting surface is perpendicular to the axial direction of the sliding shaft 4, and the second shock absorber mounting surface is parallel to the axial direction of the sliding shaft 4 and is used for mounting a shock absorber bottom surface mounting seat 5; the sliding shaft 4 penetrates through the two sliding bearings 2 and is used as a load of the shock absorber 6, a first mechanical interface is arranged at the end part of the sliding shaft 4, and a second mechanical interface is arranged at the middle part of the sliding shaft 4; the first mechanical interface is used for being connected with the top surface of the shock absorber 6 and used for testing the axial rigidity of the shock absorber 6; the second mechanical interface is used for being connected with the transverse mounting seat 7 of the shock absorber and used for testing the radial rigidity of the shock absorber 6; one end of the transverse shock absorber mounting seat 7 is fixedly connected with the sliding shaft 4, and the other end of the transverse shock absorber mounting seat 7 is provided with a mechanical interface connected with the top surface of the shock absorber 6 for screening the transverse rigidity consistency of the shock absorber 6.
Preferably, the first damper mounting surface is provided with a damper bottom surface mounting seat 5, the damper bottom surface mounting seat 5 is provided with a damper 6, and the damper 6 is connected with the first mechanical interface of the sliding shaft 4.
Preferably, the second damper mounting surface is provided with a damper bottom surface mounting seat 5, the damper bottom surface mounting seat 5 is provided with a damper 6, and the damper 6 is connected with the second mechanical interface of the sliding shaft 4.
Preferably, the sliding shaft 4 has a cylindricity of 0.001 to 0.1mm, and the sliding shaft 4 has a surface roughness of 0.8 to 6.4 μm.
Preferably, the shock absorber underside mounting base 5 is provided with a plurality of underside mounting interfaces for different types of shock absorbers 6.
Preferably, spring collar 3 comprises an O-ring spring collar 3.
According to the embodiment of the invention, the axial rigidity and the transverse rigidity of the shock absorber are effectively separated through the paired sliding bearings and the sliding shaft is used as the load of the shock absorber. Under the condition of meeting the screening requirements of the rigidity consistency of different shock absorbers, the method can also be used for comparing the consistency of the axial rigidity and the transverse rigidity of the same shock absorber, thereby effectively improving the design accuracy of the support center of the inertial navigation shock absorption system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a damper axial stiffness consistency screen in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a transverse stiffness uniformity screen for a shock absorber in accordance with an embodiment of the present invention;
wherein: the shock absorber comprises a base-1, a sliding bearing-2, a spring collar-3, a sliding shaft-4, a shock absorber bottom surface mounting seat-5, a shock absorber-6 and a shock absorber transverse mounting seat-7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Features and illustrative embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method set forth below, but rather covers any improvements, substitutions and modifications in structure, method, and apparatus without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention.
It should be noted that, in the case of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other, and the respective embodiments may be mutually referred to and cited. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The application provides shock absorber rigidity uniformity screening mechanism, shock absorber rigidity uniformity screening mechanism includes:
base 1, slide bearing 2, spring rand 3, sliding shaft 4, shock absorber bottom surface mount pad 5, shock absorber 6, the horizontal mount pad 7 of shock absorber, wherein:
base 1 is shock absorber rigidity uniformity screening mechanism body structure, and base 1 has two slide bearing 2's erection support, and spring rand 3 is fixed two slide bearing 2 respectively on two supporting seats. Meanwhile, the base 1 is provided with two shock absorber mounting surfaces and used for mounting the shock absorber bottom surface mounting seat 5 during screening of the rigidity consistency of the shock absorber 6. The sliding shaft 4 passes through two sliding bearings and acts as a load for the damper 6, and its end is provided with a mechanical interface connected to the top surface of the damper 6, and its middle part has a mechanical interface connected to the transverse damper mounting 7. One end of the transverse shock absorber mounting seat 7 is fixedly connected with the sliding shaft 4, and the other end of the transverse shock absorber mounting seat is provided with a mechanical interface connected with the top surface of the shock absorber 6 for screening the transverse rigidity consistency of the shock absorber 6.
Preferably, the sliding shaft 4 has a high cylindricity and surface finish, with less friction and additional torque when the sliding shaft 4 is moved relative to the sliding bearing 2.
Preferably, two bearing mounting holes are formed in the base 1 and used for mounting two sliding bearings 2, and the two bearing mounting holes are coaxially arranged, so that the coaxiality of the sliding bearings 2 can be effectively guaranteed.
Preferably, the two sliding bearings 2 mounted on the base 1 have high coaxiality to restrict the linear motion of the sliding shaft 4 to one degree of freedom along the axial direction, so that the friction force and the restriction moment applied to the sliding shaft 4 in the rigidity test process of the shock absorber 6 are effectively reduced.
Preferably, the base 1 has two perpendicular damper mounting surfaces. One of the mounting surfaces is perpendicular to the axis of the cylindrical surface of the support and is used for mounting the shock absorber bottom surface mounting seat 5 during screening of the axial rigidity consistency of the shock absorber 6. And the other mounting surface is parallel to the axis of the cylindrical surface of the support and is used for mounting the shock absorber bottom surface mounting seat 5 during screening of the consistency of the transverse rigidity of the shock absorber 6. Therefore, the axial rigidity and the transverse rigidity of the same damper are respectively measured and compared on one mechanism.
Preferably, the bottom surface mounting seat 5 of the shock absorber is provided with bottom surface mounting interfaces of various types of shock absorbers 6 on the same part, so that the reusability of the mechanism is improved.
Preferably, the transverse damper mounting 7 is designed as an exchangeable piece of different length for the connection of the top faces of a plurality of dampers 6 of different heights to the sliding shaft 4.
The working principle is as follows: when the rigidity of the shock absorber is measured, the sliding axis of the screening mechanism with the shock absorber installed is installed in parallel along the excitation direction of the vibration table, constant-level frequency sweep excitation is given to the vibration table, an acceleration response curve along the excitation direction is obtained through testing, the excitation frequency corresponding to the highest peak of the curve is taken as the resonance frequency of the shock absorber under the load of the corresponding sliding shaft 4, and according to the relation between the frequency and the rigidity:
k＝4π2mf2
the stiffness of the damper under the load of the corresponding sliding shaft 4 is determined. Where k is the damper stiffness, m is the mass of the sliding shaft, and f is the resonant frequency of the damper under load corresponding to the sliding shaft 4. The axial stiffness and the transverse stiffness of different shock absorbers are respectively tested, and the shock absorber with higher stiffness consistency is selected for designing a shock absorption system so as to ensure that the design of the supporting stiffness meets the requirements.
In conclusion, the invention discloses a screening mechanism for rigidity consistency of a shock absorber. The design comprises a base 1, a sliding bearing 2, a spring collar 3, a sliding shaft 4, a shock absorber bottom surface mounting seat 5, a shock absorber 6 and a shock absorber transverse mounting seat 7. The base 1 of the mechanism is provided with a bearing mounting hole with higher coaxiality, the axes of two identical sliding bearings 2 are ensured to be overlapped after the two identical sliding bearings are mounted, and the high-precision sliding shaft 4 is matched with the inner hole of the sliding bearing 2 so as to reduce the friction force and the additional moment of relative movement. The base 1 of the mechanism is provided with a mounting plane of a shock absorber bottom surface mounting seat 5 which is respectively perpendicular and parallel to the axis of a bearing mounting hole and is respectively used for testing the axial rigidity and the transverse rigidity of the shock absorber. The characteristics of a plurality of shock absorber bottom surface mounting interfaces of the shock absorber bottom surface mounting seat 5 and the shock absorber transverse mounting seats 7 with different length sizes can effectively improve and expand the reusability and the application range of the shock absorber rigidity consistency screening mechanism.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (6)
1. The utility model provides a screening frock of shock absorber rigidity uniformity which characterized in that, shock absorber rigidity uniformity screening mechanism includes: base (1), slide bearing (2), spring rand (3), sliding shaft (4), shock absorber bottom surface mount pad (5), shock absorber (6), the horizontal mount pad of shock absorber (7), wherein:
the base (1) is of a body structure of the screening tool for the rigidity consistency of the shock absorber, the bottom surface of the base (1) is of a flat plate structure, two mounting supports are vertically arranged on the base (1), the mounting supports are of a hollow structure, and the hollow structures of the two mounting supports are coaxially arranged and used for mounting the sliding bearing (2); the two ends of the mounting supports of the sliding bearings (2) are respectively provided with a spring retainer ring (3) which is used for respectively fixing the two sliding bearings (2) on the two mounting supports;
a first shock absorber mounting surface and a second shock absorber mounting surface are respectively arranged in the vertical direction of two sides of the base (1), the first shock absorber mounting surface is vertical to the axial direction of the sliding shaft (4), and the second shock absorber mounting surface is parallel to the axial direction of the sliding shaft (4) and is used for mounting a shock absorber bottom surface mounting seat (5); the sliding shaft (4) penetrates through the two sliding bearings (2) and is used as a load of the shock absorber (6), a first mechanical interface is arranged at the end part of the sliding shaft (4), and a second mechanical interface is arranged at the middle part of the sliding shaft (4); the first mechanical interface is used for being connected with the top surface of the shock absorber (6) and is used for testing the axial rigidity of the shock absorber (6); the second mechanical interface is used for being connected with the transverse mounting seat (7) of the shock absorber and used for testing the radial rigidity of the shock absorber (6); one end of the transverse shock absorber mounting seat (7) is fixedly connected with the sliding shaft (4), and the other end of the transverse shock absorber mounting seat (7) is provided with a mechanical interface connected with the top surface of the shock absorber (6) for screening the transverse rigidity consistency of the shock absorber (6).
2. The screening tool for the rigidity consistency of the shock absorbers according to claim 1, wherein the shock absorber bottom surface mounting seat (5) is arranged on the first shock absorber mounting surface, the shock absorbers (6) are arranged on the shock absorber bottom surface mounting seat (5), and the shock absorbers (6) are connected with the first mechanical interface of the sliding shaft (4).
3. The screening tool for the rigidity consistency of the shock absorbers according to claim 1, wherein a shock absorber bottom surface mounting seat (5) is arranged on a second shock absorber mounting surface, the shock absorbers (6) are arranged on the shock absorber bottom surface mounting seat (5), and the shock absorbers (6) are connected with a second mechanical interface of the sliding shaft (4).
4. The screening tool for the rigidity consistency of the shock absorber as claimed in claim 1, wherein the cylindricity of the sliding shaft (4) is 0.001-0.1 mm, and the surface roughness of the sliding shaft (4) is 0.8-6.4 μm.
5. The screening tool for the rigidity consistency of the shock absorbers according to claim 1, wherein the shock absorber bottom surface mounting seat (5) is provided with bottom surface mounting interfaces of a plurality of different types of shock absorbers (6).
6. The screening fixture of shock absorber stiffness uniformity according to claim 1, wherein the spring collar (3) comprises an O-shaped spring collar (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122201539.1U CN215785038U (en) | 2021-09-10 | 2021-09-10 | Screening tool for rigidity consistency of shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122201539.1U CN215785038U (en) | 2021-09-10 | 2021-09-10 | Screening tool for rigidity consistency of shock absorber |
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| CN215785038U true CN215785038U (en) | 2022-02-11 |
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| CN202122201539.1U Active CN215785038U (en) | 2021-09-10 | 2021-09-10 | Screening tool for rigidity consistency of shock absorber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778047A (en) * | 2022-06-17 | 2022-07-22 | 中国飞机强度研究所 | Dynamic stiffness and consistency testing device for airplane vibration damping component |
| CN114778048A (en) * | 2022-06-17 | 2022-07-22 | 中国飞机强度研究所 | Dynamic stiffness and consistency test method for airplane vibration damping component |
-
2021
- 2021-09-10 CN CN202122201539.1U patent/CN215785038U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778047A (en) * | 2022-06-17 | 2022-07-22 | 中国飞机强度研究所 | Dynamic stiffness and consistency testing device for airplane vibration damping component |
| CN114778048A (en) * | 2022-06-17 | 2022-07-22 | 中国飞机强度研究所 | Dynamic stiffness and consistency test method for airplane vibration damping component |
| CN114778047B (en) * | 2022-06-17 | 2022-09-02 | 中国飞机强度研究所 | Dynamic stiffness and consistency testing device for airplane vibration damping component |
| CN114778048B (en) * | 2022-06-17 | 2022-09-02 | 中国飞机强度研究所 | Dynamic stiffness and consistency test method for airplane vibration damping component |
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