CN209459882U - One kind being bolted stability testing stand - Google Patents
One kind being bolted stability testing stand Download PDFInfo
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- CN209459882U CN209459882U CN201920354127.1U CN201920354127U CN209459882U CN 209459882 U CN209459882 U CN 209459882U CN 201920354127 U CN201920354127 U CN 201920354127U CN 209459882 U CN209459882 U CN 209459882U
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- model
- vibration
- signal
- fixedly connected
- bolt
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Abstract
The utility model discloses one kind to be bolted stability testing stand, including platform and pedestal, pedestal is fixedly connected on one end of platform, the upper end of pedestal is fixedly connected with long cantilever by pressing plate, the utility model signal generator generates the sinusoidal signal of frequency from low to high, power amplification is carried out through power amplifier to drive vibration excitor to act, vibration excitor drives short cantilever to propagate vibration through the second bolt, forced vibration occurs to make first to be bolted long cantilever, vibration signal is simultaneously converted to faint charge signal by acceleration transducer acquisition vibration signal, the voltage signal for being converted into amplification through charge amplifier amplification again is sent to data collector, data are finally uploaded to industrial controlled machine, to be handled to have obtained the natural frequency under different pretightning forces to the vibration data obtained by experiment, it is more convenient to use.
Description
Technical field
The utility model relates to bolt pretightening technical field, specially one kind is bolted stability testing stand.
Background technique
Bolt clipping forcee is important security risk for EMU, is deposited based on bolt pretightening and its natural frequency
In the theoretical foundation of linear approximate relationship, corresponding bolt intrinsic frequency test is undoubtedly the important examination criteria of bolt clipping forcee, passes
There are many bolt frequency detecting mode of system, are commonly signal analysis method, utilize a changeable scale using wavelet transformation
Frequency window carries out signal analysis in time, preferably solves the contradiction of time and frequency resolution, be a kind of multiresolution and
The Time-Frequency Analysis Method of adaptive ability, but there is the rule that do not fix can follow, detection formula is easy to appear frequency aliasing
Situation, there are obvious deficiencies, and Hilbert-Huang transform is advanced analysis method, it has completely new Fundamentals of Mathematics, it is not
It is limited by Fourier, has the expression formula about signal essence, but also have the shortcomings that end effect, lack a kind of technical method
Signal is analyzed, realizes the extraction of each rank intrinsic frequency of bolt connection piece, so that the mode of frequency abstraction is fast implemented, for this purpose, I
Propose that one kind is bolted stability testing stand.
Utility model content
The purpose of this utility model is to provide one kind to be bolted stability testing stand, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the utility model provides the following technical solutions: one kind being bolted stability testing stand, packet
Platform and pedestal are included, the pedestal is fixedly connected on one end of platform, and the upper end of the pedestal is fixedly connected with by pressing plate
The other end of long cantilever, the long cantilever is fixedly connected with short cantilever by the first bolt, and the other end of the short cantilever passes through
Second bolt is fixedly connected on the lower end of vibration excitor, and the other end of the vibration excitor is electrically connected power amplifier, the function
The other end of rate amplifier is electrically connected with signal generator, and the upper end of the short cantilever is fixedly connected with acceleration transducer,
The acceleration transducer lower end, which is located on platform, is electrically connected with charge amplifier, and the other end of the charge amplifier is electrical
It is connected with data collector, the other end of the data collector is electrically connected on industrial controlled machine.
Preferably, one end that the outside of first bolt is located at short cantilever is fixedly connected with annular pressure sensor.
Preferably, the outside of second bolt, which is located on short cantilever, is fixedly connected with dynamic pickup, and the dynamic passes
Sensor and annular pressure sensor are electrical connected with charge amplifier.
Preferably, the upper end of the vibration excitor is connected by slinky spring with installation surface elastic.
Preferably, the signal generator model YB1610, the PA signal are BCSK-DC980, institute
The model WZDS12, the charge amplifier model BA2035, the data collector model RS485 of vibration excitor are stated,
The industrial controlled machine model MT4620TE, the acceleration transducer model NP-7310, the annular pressure sensor model number
For LFC-08, the dynamic pickup model CL-YD-310.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model signal generator 9 generates the sinusoidal signal of frequency from low to high, carries out function through power amplifier 8
Rate amplification is to drive vibration excitor 7 to act, and vibration excitor 7 drives short cantilever 3 to propagate vibration through the second bolt 17, to make the first spiral shell
Bolt 6 connects long cantilever 2 and forced vibration occurs, and acceleration transducer 10 acquires vibration signal and is converted to vibration signal faint
Charge signal, then the voltage signal for being converted into amplification through the amplification of charge amplifier 11 are sent to data collector 12, finally by data
It is uploaded to industrial controlled machine 13, to be handled to have obtained the natural frequency under different pretightning forces by experiment to the vibration data obtained
Rate is more convenient to use.
2, it is strong effectively to detect short cantilever both ends vibration frequency for the utility model annular pressure sensor and dynamic pickup
Degree, and be transported in industrial controlled machine by charge amplifier and data collector, it is more intuitive to recognize that frequency intensity changes, simply
It is practical.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model structural module diagram.
In figure: 1, platform；2, long cantilever；3, short cantilever；4, pressing plate；5, pedestal；6, the first bolt；7, vibration excitor；8, function
Rate amplifier；9, signal generator；10, acceleration transducer；11, charge amplifier；12, data collector；13, industrial controlled machine；
14, annular pressure sensor；15, slinky spring；16, dynamic pickup；17, the second bolt.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: one kind being bolted stability testing stand, including
Platform 1 and pedestal 5, pedestal 5 are fixedly connected on one end of platform 1, and the upper end of pedestal 5 is fixedly connected with long outstanding by pressing plate 4
The other end of arm 2, long cantilever 2 is fixedly connected with short cantilever 3 by the first bolt 6, and the other end of short cantilever 3 passes through the second bolt
17 are fixedly connected on the lower end of vibration excitor 7, and the other end of vibration excitor 7 is electrically connected power amplifier 8, power amplifier 8
The other end is electrically connected with signal generator 9, and the upper end of short cantilever 3 is fixedly connected with acceleration transducer 10, acceleration sensing
10 lower end of device, which is located on platform 1, is electrically connected with charge amplifier 11, and the other end of charge amplifier 11 is electrically connected with data
Collector 12, the other end of data collector 12 are electrically connected on industrial controlled machine 13.
One end that the outside of first bolt 6 is located at short cantilever 3 is fixedly connected with annular pressure sensor 14, facilitates detection short
The real-time oscillation intensity of cantilever 3 and vibration excitor 7, the outside of the second bolt 17, which is located on short cantilever 3, is fixedly connected with dynamic biography
Sensor 16, dynamic pickup 16 and annular pressure sensor 14 are electrical connected with charge amplifier 11, facilitate the first spiral shell of detection
The upper end of oscillation intensity at bolt 6, vibration excitor 7 is connected by slinky spring 15 with installation surface elastic, guarantees that vibration excitor 7 can freely shake
Dynamic, 9 model YB1610 of signal generator, 8 signal of power amplifier is BCSK-DC980, the model of vibration excitor 7
WZDS12,11 model BA2035 of charge amplifier, 12 model RS485 of data collector, 13 model of industrial controlled machine
MT4620TE, 10 model NP-7310 of acceleration transducer, 14 model LFC-08 of annular pressure sensor, dynamic pickup
16 model CL-YD-310, performance are stablized.
Specifically, this is practical in use, this experimental selection vibration excitor 7 is used as excitational equipment, selection sine sweep signal work
For energisation mode, during the experiment, signal occurs, and generates the sinusoidal signal of frequency from low to high, carries out through power amplifier 8
Power amplification is to drive vibration excitor 7 to act, and the propagation that is connected through the second bolt 17 with short cantilever 3 of vibration excitor 7 is vibrated, to make the
Forced vibration occurs for the long cantilever 2 of two bolts 17 connection, and acceleration transducer 10 acquires vibration signal and converts vibration signal
For faint charge signal, then amplify through charge amplifier 11 and to be converted into the voltage signal of amplification and send to data collector 12, finally
Data are uploaded to industrial controlled machine 13, personnel can intuitively obtain the natural frequency of the bolt under different pretightning forces by industrial controlled machine 13
Rate, simple and practical convenient and reliable, annular pressure sensor 14 and dynamic pickup 16 effectively detect short cantilever 3 and long cantilever 2
Vibration frequency intensity, and be transported in industrial controlled machine 13 by charge amplifier 11 and data collector 12, it is accurate convenient.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. one kind is bolted stability testing stand, including platform (1) and pedestal (5), it is characterised in that: the pedestal (5) is solid
Surely it is connected on one end of platform (1), the upper end of the pedestal (5) is fixedly connected with long cantilever (2) by pressing plate (4), described
The other end of long cantilever (2) is fixedly connected with short cantilever (3) by the first bolt (6), and the other end of the short cantilever (3) passes through
Second bolt (17) is fixedly connected on the lower end of vibration excitor (7), and the other end of the vibration excitor (7) is electrically connected with power amplification
The other end of device (8), the power amplifier (8) is electrically connected with signal generator (9), and the upper end of the short cantilever (3) is solid
Surely it is connected with acceleration transducer (10), acceleration transducer (10) lower end, which is located on platform (1), is electrically connected with charge
The other end of amplifier (11), the charge amplifier (11) is electrically connected with data collector (12), the data collector
(12) the other end is electrically connected on industrial controlled machine (13).
2. one kind according to claim 1 is bolted stability testing stand, it is characterised in that: first bolt (6)
Outside be located at one end of short cantilever (3) and be fixedly connected with annular pressure sensor (14).
3. one kind according to claim 2 is bolted stability testing stand, it is characterised in that: second bolt (17)
Outside be located on short cantilever (3) and be fixedly connected with dynamic pickup (16), the dynamic pickup (16) and annular pressure pass
Sensor (14) is electrical connected with charge amplifier (11).
4. one kind according to claim 1 is bolted stability testing stand, it is characterised in that: the vibration excitor (7)
Upper end is connected by slinky spring (15) with installation surface elastic.
5. one kind according to claim 3 is bolted stability testing stand, it is characterised in that: the signal generator
(9) model YB1610, power amplifier (8) signal are BCSK-DC980, the model of the vibration excitor (7)
WZDS12, charge amplifier (11) the model BA2035, data collector (12) the model RS485, the industry control
Device (13) model MT4620TE, acceleration transducer (10) the model NP-7310, the annular pressure sensor (14)
Model LFC-08, dynamic pickup (16) the model CL-YD-310.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354127.1U CN209459882U (en) | 2019-03-20 | 2019-03-20 | One kind being bolted stability testing stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920354127.1U CN209459882U (en) | 2019-03-20 | 2019-03-20 | One kind being bolted stability testing stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209459882U true CN209459882U (en) | 2019-10-01 |
Family
ID=68047295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920354127.1U Expired - Fee Related CN209459882U (en) | 2019-03-20 | 2019-03-20 | One kind being bolted stability testing stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209459882U (en) |
-
2019
- 2019-03-20 CN CN201920354127.1U patent/CN209459882U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hou Yuyan Inventor after: Yang Yixuan Inventor after: Hong Zhi Inventor after: An Weijia Inventor after: Sun Yibo Inventor before: Hou Yuyan Inventor before: Yang Yixuan Inventor before: Hong Zhi Inventor before: An Weijia |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191001 |