CN209745395U - plane vibration test bench - Google Patents
plane vibration test bench Download PDFInfo
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- CN209745395U CN209745395U CN201822174284.2U CN201822174284U CN209745395U CN 209745395 U CN209745395 U CN 209745395U CN 201822174284 U CN201822174284 U CN 201822174284U CN 209745395 U CN209745395 U CN 209745395U
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- test bench
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Abstract
The application discloses plane vibration test platform, including support, base, vibration exciter, range finding subassembly and the scanning mechanism of plane vibration test platform. The vibration exciter is arranged on the base, the scanning mechanism is fixed on the support, and the distance measuring assembly is fixed on the scanning mechanism. The technical problem of the unable quantitative analysis when causing laser oblique firing to arouse great error and manual measurement during the position of the fixed laser head that exists among the prior art is solved.
Description
Technical Field
The application relates to the field of mechanical measurement, in particular to a plane vibration test bench.
Background
When the vibration amplitude of the structure surface is tested, a non-contact laser displacement sensor is adopted, laser emitted by a laser head is irradiated on a certain point of the structure surface, the distance from the structure surface to the laser head is measured according to the laser light speed and the time difference through the sending/receiving time difference of the laser, and finally, the half of the difference between the maximum distance and the minimum distance is used as the amplitude of the structure vibration.
For the whole plane of a two-dimensional plane structure in engineering, the traditional vibration amplitude measurement method has two main types: the first method is that the surface of the structure is scanned and collected step by fixing the position of a laser head and changing the ejection deflection angle of a laser light column; the second is to perform a spot test on the surface of the structure by manually moving the laser sensor.
Because the laser sensor has the limitation of measurement precision and measuring range, the two main defects of the transmission test method for the vibration test of the plane structure are as follows: distance error caused by oblique ejection of the laser light beam; during manual testing, the position of each time is random, and errors cannot be quantitatively analyzed, and especially when multiple observation points are used for measurement (short for multipoint measurement), the phase difference of each light column cannot be guaranteed.
Aiming at the technical problems that the laser oblique shooting causes large errors when the position of a laser head is fixed and the quantitative analysis cannot be carried out during manual measurement in the prior art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a plane vibration test bench to cause laser oblique shooting to cause the technical problem of unable quantitative analysis when great error and manual measurement when at least solving the position of the fixed laser head that exists among the prior art.
according to this disclosed embodiment provides a plane vibration test platform, including support, base, vibration exciter, range finding subassembly and the scanning mechanism of plane vibration test platform. Wherein, the vibration exciter is arranged on the base. The scanning mechanism is fixed on the bracket and can perform scanning operation in a plane. And the distance measuring component is fixed on the scanning mechanism.
Optionally, in the above apparatus, the scanning mechanism includes a first motorized slide and a second motorized slide. The first electric slide rail is fixed on the bracket and extends along a first direction. The second electric slide rail is arranged on the first electric slide rail and extends along the second direction. The second direction is different from the first direction, and the second electric slide rail can move along the first direction relative to the first electric slide rail. And the distance measuring component is arranged on the second electric sliding rail and can move along the second direction relative to the second electric sliding rail.
Optionally, in the above apparatus, the first motorized slide rail includes: the first slider and the first lead screw that drives the first slider and move along the first direction to second electronic slide rail sets up on first slider.
optionally, in the above apparatus, the second motorized slide rail includes: the second slider and the second lead screw that drives the second slider and move along the second direction to the range finding subassembly sets up on the second slider.
Optionally, in the above apparatus, the distance measuring assembly includes a laser distance meter.
Optionally, in the above apparatus, the distance measuring assembly further includes a height adjuster, wherein one end of the height adjuster is connected to the second slider, and the laser distance meter is connected to the height adjuster.
Optionally, the apparatus further comprises a signal generator connected to the exciter for sending a periodic signal to the exciter.
Optionally, the above apparatus further comprises a first motion control assembly and a second motion control assembly, wherein the first motion control assembly is connected to the first electric rail, and the second motion control assembly is connected to the second electric rail.
optionally, the apparatus further includes a calculation processing device and a displacement measurement component, where the displacement measurement component is connected to the distance measurement component and the calculation processing device, respectively, and is configured to measure a displacement of the surface of the object to be measured according to a signal sent by the distance measurement component, and send the measured displacement to the calculation processing device. And the calculation processing device receives the displacement sent by the displacement measurement component and calculates the vibration amplitude of the surface of the object to be measured according to the displacement.
Optionally, the above apparatus further comprises a leveling assembly disposed at a lower portion of the planar vibration testing table, the leveling assembly including at least 1 bubble level.
according to the embodiment of the utility model provides a pair of plane vibration testboard is through using scanning structure for range unit all keeps perpendicular with the plane of being surveyed at any time, any position, causes laser oblique shooting to arouse the technical problem of unable quantitative analysis when great error and manual measurement when having solved the position of the fixed laser head that exists among the prior art well.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
FIG. 1 is a block diagram of a planar vibration test stand according to an embodiment of the present disclosure; and
Fig. 2 is a further structural diagram of the planar vibration test stand according to an embodiment of the present disclosure.
the device comprises a support 101, a base 102, a vibration exciter 103, a distance measuring assembly 104, a scanning mechanism 105, a first electric slide rail 106, a second electric slide rail 107, a height adjuster 108, a first motion control assembly 109, a second motion control assembly 110, a signal generator 111, a calculation processing device 112, a displacement measuring assembly 113, a first slide block 114, a first lead screw 115, a laser distance measuring instrument 116, an object to be measured 117, a second slide block 118 and a second lead screw 119.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, and combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
examples
According to the embodiment of the utility model provides a plane vibration test bench is provided, support 101, base 102, vibration exciter 103, range finding subassembly 104 and scanning mechanism 105 including plane vibration test bench. Wherein, the vibration exciter 103 is arranged on the base 102. The scanning mechanism 105 is fixed to the carriage 101 and is capable of performing a scanning operation in a plane. And ranging assembly 104 is secured to scanning mechanism 105.
Specifically, as shown in fig. 1, in the present embodiment, the scanning mechanism 105 is mounted on the support 101, and the ranging assembly 104 is fixed to the scanning mechanism 105. The vibration exciter 103 is arranged on the base 102, the object 117 to be measured is fixed on the vibration exciter 103, the object 117 to be measured is excited to start vibration by the vibration exciter 103, the distance measuring assembly 104 measures the distance between the distance measuring assembly and the object 117 to be measured, and half of the difference between the longest distance and the shortest distance is used as the amplitude of the object 117 to be measured.
Because the distance measuring component 104 is disposed on the scanning mechanism 105, the scanning mechanism 105 can drive the measuring component 104 to scan in a plane, so that the distance measuring component 104 can detect the distance of each point of the object 117 to be measured. Moreover, because the distance measurement component 104 scans along with the movement of the scanning mechanism 105 in the plane, rather than scanning through the deflection of the distance measurement component 104, when performing a plane vibration test, the distance measurement component 104 is always perpendicular to the object 117 to be measured and keeps the distance unchanged, thereby overcoming the technical problems that the laser oblique shooting causes large errors when fixing the position of the laser head in the prior art and the quantitative analysis cannot be performed during manual measurement.
In addition, the base 102 can be provided with a balance weight, so that the plane vibration test table is more stable and heavy when in work, and a rubber shock absorber is arranged at the bottom of the base 102 and used for reducing the influence of the whole set of mechanism on the table top, thereby reducing the measurement error.
In this embodiment, the vibration exciter 103 is preferably an electromagnetic vibration exciter, which is preferred for its advantages of small size, reliable performance and fast response, and of course, other types of vibration exciters may be selected according to the characteristics of the object to be measured.
Optionally, in the above apparatus, the scanning mechanism 105 includes a first motorized slide rail 106 and a second motorized slide rail 107. The first electric slide rail 106 is fixed on the bracket 101 and extends along a first direction. The second electric slide rail 107 is disposed on the first electric slide rail 106 and extends along the second direction. Wherein the second direction is different from the first direction and the second motorized sled 107 is movable in the first direction relative to the first motorized sled 106. And the distance measuring assembly 104 is disposed on the second electric slide rail 107 and can move along the second direction relative to the second electric slide rail 107.
Specifically, as shown in fig. 1, in this embodiment, the first electric slide rail 106 and the second electric slide rail 107 are installed in a vertical direction, so that the second electric slide rail 107 slides along the direction of the first electric slide rail 106 under the driving of the first electric slide rail 106, and the distance measuring assembly 104 slides along the direction of the second electric slide rail 107 under the driving of the second electric slide rail 107, so that the distance measuring assembly 104 is driven to scan in a plane by controlling the sliding direction and speed of the first electric slide rail 106 and the second electric slide rail 107. Therefore, the amplitude of any point of the object 117 to be measured can be accurately measured by the distance measuring component 104, and the technical problems that large errors are caused by oblique laser irradiation when the position of a laser head is fixed and quantitative analysis cannot be carried out during manual measurement in the prior art are further solved.
Optionally, in the above apparatus, the first electric slide rail 106 includes: a first slider 114 and a first lead screw 115 for driving the first slider 114 to move along a first direction, and a second electric slide rail 107 is disposed on the first slider 114.
Specifically, as shown in fig. 1, in the present embodiment, the first electric slide rail 106 preferably slides by means of a lead screw according to the prior art and the market maturity, but not certainly excludes other types of slide rails. The first electric slide rail 106 is further provided with a first slider 114, and the first slider 114 is driven by the first lead screw 115 to move in a first direction, that is, in the present embodiment, in a direction in which the first electric slide rail 106 is mounted. The second electric slide rail 107 is disposed on the first slide block 114, so that the second electric slide rail 107 can be driven by the first slide block 114 to move along the first direction.
Optionally, in the above apparatus, the second motorized sled 107 comprises: a second slide block 118 and a second lead screw 119 for driving the second slide block 118 to move along a second direction, and the distance measuring assembly 104 is disposed on the second slide block 118.
Specifically, as shown in fig. 1, in the present embodiment, the second motor slide 107 and the first motor slide 106 adopt the same structure. Further, the second electric slide rail 107 is provided with a second slider 118, and the second slider 118 is driven by a second lead screw 119 to move in a second direction (the second direction is perpendicular to the first direction in the present embodiment), that is, in a direction in which the second electric slide rail 107 is mounted. The distance measuring assembly 104 is disposed on the second slide 118, and the scanning operation in a plane is realized by the cooperation of the first slide 114 and the second slide 118.
Optionally, in the above apparatus, the ranging assembly 104 includes a laser rangefinder 116.
Specifically, as shown in fig. 1, in this embodiment, the distance measuring assembly 104 includes a laser distance meter 116 as a front-end device for performing distance measurement, and the laser distance meter has the advantages of fast distance measurement, small size and reliable performance, and is very suitable for a work place for measuring a vibration amplitude, and may also select an ultrasonic distance meter, an infrared distance meter, etc. according to a physical characteristic of a measurement object.
In addition, a plurality of distance measuring instruments can be used simultaneously to improve the measuring efficiency and the measuring accuracy.
Optionally, in the above apparatus, the distance measuring assembly 104 further comprises a height adjuster 108, wherein one end of the height adjuster 108 is connected to the second slider 118, and the laser distance meter 116 is connected to the height adjuster 108.
Specifically, as shown in fig. 1, in the present embodiment, the ranging assembly 104 further comprises a height adjuster 108, wherein one end of the height adjuster 108 is connected with the second slider 118, and the laser rangefinder 116 is connected with the height adjuster 108. The distance between the laser range finder 116 and the object 117 to be measured is adjusted by adjusting the height adjuster 108, so that the distance between the laser range finder 116 and the object 117 to be measured can be adjusted to a distance suitable for measuring the vibration of the object 117 to be measured, thereby facilitating the vibration test of the object 117 to be measured. Specifically, for example, the height adjuster 108 may be a telescopic assembly, and the laser rangefinder 116 is provided at the other end of the height adjuster 108, so that the height of the laser rangefinder 116 is adjusted according to the extension and retraction of the height adjuster 108. Alternatively, the height adjuster 108 may be a rack and the laser rangefinder 116 may be movably coupled to the height adjuster 108. The height of the laser rangefinder 116 is adjusted by adjusting the position of the laser rangefinder 116 at the height adjuster 108.
optionally, the apparatus further comprises a signal generator 111, and the signal generator 111 is connected to the exciter 103 and configured to send a periodic signal to the exciter 103.
Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the signal generator 111 is connected to the vibration exciter 103, and the vibration exciter 103 performs periodic reciprocating motion according to the periodic signal emitted by the signal generator 111, so as to excite the object 117 to start vibration, and by adjusting the period of the signal emitted by the signal generator 111 to be different, the amplitude of the object 117 to be detected is also different, and when the excitation period of the object 117 to be detected is identical to the vibration frequency of the object 117 to be detected, the amplitude is maximum.
Optionally, the apparatus further comprises a first motion control assembly 109 and a second motion control assembly 110, wherein the first motion control assembly 109 is connected to the first electric slide 106, and the second motion control assembly 110 is connected to the second electric slide 107.
Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the first motion control assembly 109 is connected to the first electric slide rail 106 to control the sliding speed and direction of the first electric slide rail 106, and the second motion control assembly 110 is connected to the second electric slide rail 107 to control the sliding speed and direction of the second electric slide rail 107, so as to control the position movement of the measurement assembly 113.
Optionally, the apparatus further includes a computing and processing device 112 and a displacement measuring assembly 113, where the displacement measuring assembly 113 is connected to the distance measuring assembly 104 and the computing and processing device 112, respectively, and is configured to measure a displacement of the surface of the object to be measured according to a signal sent by the distance measuring assembly 104, and send the measured displacement to the computing and processing device 112; and the calculation processing device 112 receives the displacement sent by the displacement measurement component 113, and calculates the vibration amplitude of the surface of the object to be measured according to the displacement.
Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the displacement measurement component 113 is connected to the distance measurement component 104 and the calculation processing device 112, respectively, the displacement measurement component 113 processes the result measured by the distance measurement component 104 (for example, calculates the displacement of the surface of the object 117 to be measured), and transmits the processing result to the calculation processing device 112, and the calculation processing device 112 reprocesses the processing result sent by the displacement measurement component 113, and analyzes and archives the data of the vibration measurement.
Optionally, the above apparatus further comprises a leveling assembly disposed at a lower portion of the planar vibration testing table, the leveling assembly including at least 1 bubble level.
Specifically, in this embodiment, the planar vibration testing table further includes a horizontal adjustment assembly (not shown in the figure) for adjusting the planar vibration testing table. Due to the process of the plane vibration test table, the place where the plane vibration test table is placed and the movement generated after the plane vibration test table works for a certain time, the state of the plane vibration test table does not accord with the corresponding horizontal standard, and at the moment, the horizontal adjustment is needed. In this embodiment, the level is preferably a bubble level and the selection of levels other than bubble levels is not, of course, excluded.
In addition, a level can be arranged, and a plurality of levels can be arranged to enable the level adjustment to be more accurate. And the level can be placed at other positions of the plane vibration test bench.
Through the scheme disclosed by the embodiment, the provided plane vibration test bench enables the distance measuring device to be perpendicular to a measured plane at any time and at any position by using the scanning structure, and well solves the technical problems that laser oblique shooting causes large errors and quantitative analysis cannot be carried out during manual measurement in the prior art when the position of a laser head is fixed.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom" and the like is generally based on the orientation when the device is facing the user when it is in normal use. Moreover, the indicated orientations or positional relationships are only for convenience in describing the invention and for simplifying the description, and in the absence of a contrary explanation, these orientation terms are not intended to indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
In addition, the above-mentioned serial numbers of the embodiments of the present application are merely for description, and do not represent the merits of the embodiments. In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A planar vibration test bench comprises a bracket (101), a base (102), an exciter (103), a distance measuring assembly (104) and a scanning mechanism (105) of the planar vibration test bench, and is characterized in that,
the vibration exciter (103) is arranged on the base (102),
The scanning mechanism (105) is fixed to the carriage (101) and is capable of performing a scanning operation in a plane, and
The distance measuring assembly (104) is fixed on the scanning mechanism (105).
2. The planar vibration test bench according to claim 1, wherein said scanning mechanism (105) comprises a first motorized sled (106) and a second motorized sled (107), wherein,
The first electric slide rail (106) is fixed on the bracket (101) and extends along a first direction;
The second motorized sled (107) is disposed on the first motorized sled (106) and extends in a second direction, wherein the second direction is different from the first direction, and the second motorized sled (107) is movable relative to the first motorized sled (106) in the first direction; and is
The distance measuring assembly (104) is arranged on the second electric sliding rail (107) and can move along the second direction relative to the second electric sliding rail (107).
3. The planar vibration test bench of claim 2,
The first motorized slide rail (106) includes: a first slider (114) and a first lead screw (115) for driving the first slider (114) to move along the first direction, and
the second electric slide rail (107) is arranged on the first slide block (114).
4. The planar vibration test bench of claim 3,
The second motorized slide rail (107) comprises: a second slider (118) and a second lead screw (119) for driving the second slider (118) to move along the second direction, and
The distance measuring assembly (104) is arranged on the second sliding block (118).
5. The planar vibration test bench of claim 4 wherein said ranging assembly (104) comprises a laser rangefinder (116).
6. the planar vibration test bench of claim 5 wherein said ranging assembly (104) further comprises a height adjuster (108), wherein one end of said height adjuster (108) is connected to said second slide (118) and said laser rangefinder (116) is connected to said height adjuster (108).
7. The planar vibration test bench according to claim 1, further comprising a signal generator (111), said signal generator (111) being connected to said exciter (103) for sending a periodic signal to said exciter (103).
8. The planar vibration test bench according to claim 2, further comprising a first motion control assembly (109) and a second motion control assembly (110), wherein said first motion control assembly (109) is connected to said first motorized sled (106) and said second motion control assembly (110) is connected to said second motorized sled (107).
9. the planar vibration test bench of claim 1 further comprising a computational processing device (112) and a displacement measurement assembly (113), wherein,
the displacement measuring component (113) is respectively connected with the distance measuring component (104) and the computing and processing device (112), and is used for measuring the displacement of the surface of the object to be measured according to the signal sent by the distance measuring component (104) and sending the measured displacement to the computing and processing device (112); and
And the computing and processing device (112) receives the displacement sent by the displacement measuring component (113) and computes the vibration amplitude of the surface of the object to be measured according to the displacement.
10. The planar vibration test bench of claim 1, further comprising a leveling assembly disposed at a lower portion of the planar vibration test bench, wherein the leveling assembly comprises at least 1 bubble level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174284.2U CN209745395U (en) | 2018-12-24 | 2018-12-24 | plane vibration test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174284.2U CN209745395U (en) | 2018-12-24 | 2018-12-24 | plane vibration test bench |
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| Publication Number | Publication Date |
|---|---|
| CN209745395U true CN209745395U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822174284.2U Expired - Fee Related CN209745395U (en) | 2018-12-24 | 2018-12-24 | plane vibration test bench |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865687A (en) * | 2021-08-31 | 2021-12-31 | 青岛海尔空调器有限总公司 | Pipeline vibration testing device |
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2018
- 2018-12-24 CN CN201822174284.2U patent/CN209745395U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113865687A (en) * | 2021-08-31 | 2021-12-31 | 青岛海尔空调器有限总公司 | Pipeline vibration testing device |
| CN113865687B (en) * | 2021-08-31 | 2024-02-20 | 青岛海尔空调器有限总公司 | Pipeline vibration testing device |
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Granted publication date: 20191206 Termination date: 20201224 |