CN216955062U - Vibration test platform displacement test structure - Google Patents
Vibration test platform displacement test structure Download PDFInfo
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- CN216955062U CN216955062U CN202220652480.XU CN202220652480U CN216955062U CN 216955062 U CN216955062 U CN 216955062U CN 202220652480 U CN202220652480 U CN 202220652480U CN 216955062 U CN216955062 U CN 216955062U
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- displacement sensor
- laser displacement
- moving coil
- test
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Abstract
The utility model provides a vibration test platform displacement test structure, includes the magnetic cylinder body and movable coil, but the movable coil axial reciprocating motion is located in the magnetic cylinder body, the position that the test platform magnetic field was kept away from to the magnetic cylinder body bottom sets firmly a laser displacement sensor who is used for measuring movable coil axial displacement volume, laser displacement sensor with the movable coil is corresponding to be arranged. According to the vibration test bed displacement test structure provided by the utility model, the laser displacement sensor is arranged at the position, far away from the test bed magnetic field, of the bottom end of the magnetic cylinder body by adopting the fixing frame, the probe of the laser displacement sensor is arranged towards the bottom plate of the moving coil, and the laser displacement sensor can measure the displacement of the moving coil in real time in the moving process of the moving coil.
Description
Technical Field
The utility model relates to the field of vibration tests, in particular to a displacement test structure of a vibration test bed.
Background
The vibration test bed is used as a mechanical environment test device, is mainly used for verifying the quality of products in a mechanical environment, and along with the continuous improvement of requirements of people on the quality of the products, the electric vibration test bed is widely applied to various fields such as national defense, aviation, aerospace, communication, electronics, automobiles, household appliances and the like. The principle of the method is that an exciting force is generated to drive a component according to the interaction of a constant magnetic field and a moving component which is positioned in the constant magnetic field and is electrified with alternating current, and a test piece is placed on the moving component for vibration test. Before testing, the oscillating table moving part (moving coil) needs to be centered.
At present, the displacement of a conventional vibration test bed is obtained by acceleration integration, and the numerical deviation obtained by calculation is larger for low-frequency vibration, so a set of direct measurement method is needed.
Therefore, in order to overcome the defects of the prior art, a displacement test structure of a vibration test bed needs to be designed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide a displacement test structure of a vibration test bed.
In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: the utility model provides a vibration test platform displacement test structure, includes cylinder block and movable coil, but the movable coil axial reciprocating motion is located in the cylinder block, the position that the test bench magnetic field was kept away from to cylinder block bottom sets firmly a laser displacement sensor who is used for measuring movable coil axial displacement volume, laser displacement sensor with the movable coil corresponds and arranges.
The preferable technical scheme is as follows: the bottom end of the magnetic cylinder body is connected with a fixing frame far away from the magnetic field of the test bed, and the laser displacement sensor is fixedly arranged on the fixing frame through a mounting frame.
The preferable technical scheme is as follows: the mounting frame is of an inverted L-shaped structure and comprises a horizontal part and a vertical part, the horizontal part is fixedly connected with the fixing frame through bolts, and the vertical part is arranged towards the bottom side and used for fixing the laser displacement sensor.
The preferable technical scheme is as follows: the fixing frame and the mounting frame are made of aluminum.
The preferable technical scheme is as follows: and the probe of the laser displacement sensor is vertically arranged towards the bottom plate of the moving coil.
Due to the application of the technical scheme, the utility model has the beneficial effects that:
according to the displacement testing structure of the vibration test bed, the laser displacement sensor is arranged at the position, far away from the magnetic field of the test bed, of the bottom end of the magnetic cylinder body by the aid of the fixing frame, the probe of the laser displacement sensor is arranged towards the bottom plate of the moving coil, and the laser displacement sensor can measure the displacement of the moving coil in real time in the moving process of the moving coil.
Drawings
FIG. 1 is a schematic view of the present invention.
In the above drawings, 1, a magnetic cylinder body; 2. moving coils; 3. a fixed mount; 4. a laser displacement sensor; 5. and (7) mounting frames.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the products of the present invention are usually placed in when used, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1, the displacement testing structure of the vibration testing stand provided by the utility model comprises a magnetic cylinder body 1 and a moving coil 2.
Wherein, but the moving coil 2 axial reciprocating motion ground is located in the cylinder block 1, is equipped with a mount 3 of keeping away from the test bench magnetic field in the bottom of cylinder block 1, installs a laser displacement sensor 4 on the mount 3, and laser displacement sensor 4 corresponds with moving coil 2 position.
When the device is used for the first time, the moving coil 2 can be manually adjusted to the centering position in a standing state, and then the distance of the moving coil 2 measured by the laser displacement sensor 4 at the moment is set as a calibration centering distance. When the moving coil 2 needs to be centered later, the moving coil 2 is adjusted only by referring to the calibration centering distance.
Under the test state, the laser displacement sensor 4 measures the real-time distance of the moving coil 2, the real-time distance subtracts the calibration centering distance to obtain the real-time displacement of the moving coil 2, the real-time displacement is a positive value and represents the top end over-displacement, and the real-time displacement is a negative value and represents the bottom end over-displacement. In addition, the absolute value of the real-time displacement is subtracted by the amplitude to obtain a specific over-displacement value.
It should be noted that: the laser displacement sensor 4 is fixedly arranged on the fixed frame 3 through a mounting frame 5. The mounting frame 5 is an inverted L-shaped structure including a horizontal portion and a vertical portion. The horizontal part and the fixed frame 3 are fixedly connected by bolts, and the vertical part is arranged toward the bottom side and is used for fixing the laser displacement sensor 4.
In order to avoid the influence of magnetic field magnetization on the measurement precision, the fixing frame 3 and the mounting frame 5 are made of aluminum.
In addition, the probe of the laser displacement sensor 4 is arranged perpendicularly toward the bottom plate of the moving coil 2 to ensure accurate measurement of the axial displacement data of the moving coil 2.
Therefore, the utility model has the following advantages:
according to the displacement testing structure of the vibration test bed, the laser displacement sensor is arranged at the position, far away from the magnetic field of the test bed, of the bottom end of the magnetic cylinder body by the aid of the fixing frame, the probe of the laser displacement sensor is arranged towards the bottom plate of the moving coil, and the laser displacement sensor can measure the displacement of the moving coil in real time in the moving process of the moving coil.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a vibration test platform displacement test structure, includes cylinder block and moving coil, but the moving coil axial reciprocating motion is located in the cylinder block, its characterized in that: and a laser displacement sensor for measuring the axial displacement of the moving coil is fixedly arranged at the position, far away from the magnetic field of the test bed, of the bottom end of the magnetic cylinder body, and the laser displacement sensor and the moving coil are correspondingly arranged.
2. A vibration test stand displacement test structure according to claim 1, wherein: the bottom end of the magnetic cylinder body is connected with a fixing frame far away from the magnetic field of the test bed, and the laser displacement sensor is fixedly arranged on the fixing frame through a mounting frame.
3. A vibration test stand displacement test structure according to claim 2, wherein: the mounting frame is of an inverted L-shaped structure and comprises a horizontal part and a vertical part, the horizontal part is fixedly connected with the fixing frame through bolts, and the vertical part is arranged towards the bottom side and used for fixing the laser displacement sensor.
4. A vibration test stand displacement test structure according to claim 2, wherein: the fixing frame and the mounting frame are made of aluminum.
5. A vibration test stand displacement test structure according to claim 3, wherein: and the probe of the laser displacement sensor is vertically arranged towards the bottom plate of the moving coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220652480.XU CN216955062U (en) | 2022-03-24 | 2022-03-24 | Vibration test platform displacement test structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220652480.XU CN216955062U (en) | 2022-03-24 | 2022-03-24 | Vibration test platform displacement test structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216955062U true CN216955062U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220652480.XU Active CN216955062U (en) | 2022-03-24 | 2022-03-24 | Vibration test platform displacement test structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216955062U (en) |
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2022
- 2022-03-24 CN CN202220652480.XU patent/CN216955062U/en active Active
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