CN206353053U - A kind of near field noise scanning tester - Google Patents
A kind of near field noise scanning tester Download PDFInfo
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- CN206353053U CN206353053U CN201621455225.7U CN201621455225U CN206353053U CN 206353053 U CN206353053 U CN 206353053U CN 201621455225 U CN201621455225 U CN 201621455225U CN 206353053 U CN206353053 U CN 206353053U
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- straight line
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Abstract
The utility model discloses a kind of near field noise scanning tester, belong to noise detection technique field.Described device includes base, first straight line moving link, second straight line moving link, the 3rd linear motion component and the fixed structure for fixing velocity of sound probe；3rd linear motion component is installed on base, and first straight line moving link is slidably connected respectively with second straight line moving link and second straight line moving link with the 3rd linear motion component, is mutually perpendicular to two-by-two between three linear motion components；Fixed structure is slidably connected first straight line moving link.So as to when being moved by the device on measured piece surface, it ensure that translational speed and apart from uniformity, improve the accuracy of test result, and the problem of avoid personal safety hidden danger that conventional hand mode is caused to tester, it is easy to operate, easily controllable simultaneously compared with industrial machinery arm.
Description
Technical field
The utility model is related to noise detection technique field, more particularly to a kind of near field noise scanning tester.
Background technology
For motor, engine or other need the noise testing of equipment that large-scale experiment stand could run, due to examination
Stand etc. is tested larger compared to the sound that measured piece itself is sent, so can be tested using near field noise scanning, near field noise
Sweep test refers to be popped one's head in the velocity of sound, is scanned on the test surfaces apart from measured piece certain distance, obtains measured piece surface
Noise profile figure, determine the position of noise source by noise profile figure, and then analyze and solve the noise problem of measured piece.
Shown in reference picture 1, when using velocity of sound probe test measured piece near field noise, if necessary to scan on a face
Noise profile in the scanning plane 2 apart from the certain distance of measured piece 1, it is necessary to be scanned；In the prior art, swept near field noise
Test is retouched, is typically scanned by the hand-held velocity of sound probe of tester, the velocity of sound can also be clamped by industrial machinery arm and popped one's head in
It is scanned.
By way of prior art, because when the hand-held velocity of sound probe of tester is scanned, human hand can not ensure
The velocity of sound is popped one's head in the measuring distance and the accuracy of translational speed and uniformity moved by side part surface, so that test result
Error is larger, and by human hand held, when apart from measured piece, for example motor, engine etc. are nearer, the personal safety for tester has
Very big hidden danger；On the other hand, because velocity of sound probe is very light and handy, by way of industrial machinery arm is clamped, test can be caused
The waste of cost, and there are problems that control it is complicated,.
Utility model content
In order to improve the accuracy of near-field scan test, reduce the error of test result, while in order to operate simple and carry
The security of height operation, the utility model embodiment provides a kind of near field noise scanning tester.The technical scheme is such as
Under：
First aspect is there is provided a kind of near field noise scanning tester, and described device includes base, first straight line and moved
Component, second straight line moving link, the 3rd linear motion component and the fixed structure for fixing velocity of sound probe；
The 3rd linear motion component is installed on the base, the first straight line moving link and described second straight
Line moving link and the second straight line moving link are slidably connected respectively with the described 3rd linear motion component, and described the
One straight line moving link, the second straight line moving link and the 3rd linear motion component are mutually perpendicular to two-by-two；
The fixed structure is slidably connected the first straight line moving link.
With reference in a first aspect, in the first mode in the cards, described device also includes being used to drive the fixation
The first drive mechanism that structure is slided on the first straight line moving link, for driving the first straight line moving link to exist
The second drive mechanism slided on the second straight line moving link, and for driving the second straight line moving link in institute
State the 3rd drive mechanism slided on the 3rd linear motion component.
With reference to the first mode in the cards of first aspect, in second of mode in the cards, described first
Drive mechanism, second drive mechanism and the 3rd drive mechanism include motor respectively.
With reference to the first mode in the cards of first aspect, first is straight described in the third mode in the cards
Line moving link, the second straight line moving link and the 3rd linear motion component are at least ball screw framework or gear
One kind in rack fit structure or chain drive structure.
With reference to first aspect to first aspect the third in any one mode in the cards, may be real at the 4th kind
In existing mode, described device also includes the first sliding block, and the first straight line moving link includes the first slide rail, the fixed knot
Structure is slidably connected first slide rail by first sliding block；
The second straight line moving link includes the second slide rail, and described device also includes being arranged on first slide rail and institute
State the second sliding block between the second slide rail；First slide rail is slidably connected second slide rail by second sliding block；
The 3rd linear motion component includes the 3rd slide rail, and described device also includes being arranged on second slide rail and institute
State the 3rd sliding block between the 3rd slide rail；Second slide rail is slidably connected the 3rd slide rail by the 3rd sliding block.
With reference to the 4th kind of mode in the cards of first aspect, in the 5th kind of mode in the cards, described first
Slide rail is detachably connected second sliding block, and second slide rail is detachably connected the 3rd sliding block.
With reference to the third any one mode in the cards of first aspect to first aspect, it may be realized at the 6th kind
Mode in, the fixed structure includes clamping structure, and the clamping structure is used to clamp velocity of sound probe.
It is described to clamp in the 7th kind of mode in the cards with reference to the 6th kind of mode in the cards of first aspect
The part of structure and the velocity of sound probe contacts is the structure that sound-absorbing material is constituted.
With reference to the third any one mode in the cards of first aspect to first aspect, it may be realized at the 8th kind
Mode in, described device also includes displacement transducer, the peace that the installation sites of institute's displacement sensors is popped one's head in the velocity of sound
Holding position is corresponding；It is preferred that, institute's displacement sensors are installed on first sliding block.
With reference to the third any one mode in the cards of first aspect to first aspect, it may be realized at the 9th kind
Mode in, the base is provided with the movable pulley and locking knot for locking the movable pulley for being used for moving for the base
Structure；Preferably, the 3rd linear motion component is removably mounted on the base.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：Pass through being somebody's turn to do that the utility model is provided
Device, because the first straight line moving link of the device and second straight line moving link, second straight line moving link and the 3rd are straight
Line moving link is distinguished to be mutually perpendicular to two-by-two between slidable connection, and three linear motion components, then being formed has x, y, z axle
Motion structure, and fixed structure is slidably connected with first straight line moving link, and the fixed structure is used to fix velocity of sound probe,
So as to which being slidably connected between fixed structure and first straight line moving link can make the axle that velocity of sound probe is moved along first straight line
Mobile to move along the x-axis, being slidably connected between first straight line moving link and second straight line moving link can visit the velocity of sound
Head is moved along y-axis, and being slidably connected between second straight line moving link and the 3rd linear motion component can make velocity of sound probe along z
Axle is moved, so that Noise scan test can be carried out to each orientation of measured piece by the device, can be to sound in measurement process
Speed probe is fixed, so as to ensure the uniformity of translational speed and distance, improves the accuracy of test result, and behaviour
Facilitate, it is easy to control, it is to avoid the personal safety that tradition is caused to tester when carrying out noise testing by hand-held
The problem of hidden danger, while when avoiding human hand held velocity of sound probe, inconsistent due to translational speed and distance causes sampling inequality,
Cause the problem of test result error is larger；In addition, by the way that the device avoids clamp the velocity of sound by industrial machinery arm to pop one's head in
The problem of equipment caused is wasted, cost is high, not easily shifted and control is complicated.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the schematic diagram for the velocity of sound scanning probe measured piece near field noise that the utility model embodiment is provided；
Fig. 2 is the overall structure diagram for the near field noise scanning tester that the utility model embodiment is provided；
Fig. 3 is a kind of linear motion element structure schematic diagram that the utility model embodiment is provided；
Fig. 4 is the part-structure schematic diagram for the near field noise scanning tester that the utility model embodiment is provided；
Fig. 5 is the structural representation for being detachably connected mode that the utility model embodiment is provided；
Fig. 6 is the structural representation for the clamping structure that the utility model embodiment is provided；
Fig. 7 is the structural representation of the installation site for the displacement transducer that the utility model embodiment is provided.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, implement below in conjunction with the utility model
Accompanying drawing in example, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described reality
It is only a part of embodiment of the utility model to apply example, rather than whole embodiments.Based on the embodiment in the utility model,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, belongs to this reality
With novel protected scope.
Embodiment one
The utility model embodiment provides a kind of near field noise scanning tester, and shown in reference picture 2, the device includes
Base 40, first straight line moving link 10, the linear motion component 30 and for fixing of second straight line moving link the 20, the 3rd
The fixed structure 60 of velocity of sound probe 50；
3rd linear motion component 30 is installed on base 40, first straight line moving link 10 and second straight line moving link
20th, the linear motion of second straight line moving link 20 and the 3rd component 30 difference slidable connection, first straight line moving link 10, the
The two linear motion linear motion components 30 of component 20 and the 3rd are mutually perpendicular to two-by-two；
Fixed structure 60 is slidably connected first straight line moving link 10.
By being mutually perpendicular to two-by-two between this three linear motion components so that this three linear motion components are formd
Motion structure with x, y, z axle, and be slidably connected between any two, so that velocity of sound probe can be in space along x, y, z
Axle is moved so that can carry out Noise scan test to each orientation of measured piece by the device.
Further, device also includes be used to drive fixed structure 60 to slide on first straight line moving link 10 first
Drive mechanism, for the second drive mechanism for driving first straight line moving link 10 to be slided on second straight line moving link 20,
And the 3rd drive mechanism for driving second straight line moving link 20 to be slided on the 3rd linear motion component 30.It is optional
, first drive mechanism, the second drive mechanism and the 3rd drive mechanism can include motor 70 respectively.
Specifically, if the first drive mechanism, the second drive mechanism and the 3rd drive mechanism can include motor 70 respectively,
Each motor is located at the side of corresponding linear motion component slide rail, and the axle of each motor connects with corresponding linear motion component
Connect；
Wherein, motor can be by motor controller controls, so that motor exports corresponding measurement parameter；The measurement parameter
Rotational angle and rotating speed can be included, so that can at a certain distance and velocity test measured piece by the velocity of sound of device probe
Near field noise.
Further, first straight line moving link 10, second straight line moving link 20 and the 3rd move along a straight line component 30 to
It is less one kind in ball screw framework or rack-and-pinion fit structure or chain drive structure.
Exemplary, can work as the linear motion in figure by taking first straight line moving link 10 as an example shown in reference picture 3
Component is ball screw framework, and structural representation during including motor 70；As shown in Figure 3, motor 70 is fixed on ball wire
The side of thick stick mechanism, the axle of motor is connected with ball screw framework by key, or can be connected by other means, motor
Can be controlled by special electric machine controller, electric machine controller can according to testing requirement (rotational angle as required and
Rotating speed), to motor output current signal, controlled motor axle exports corresponding rotational angle and rotating speed, passes through motor shaft and ball
Leading screw is connected, and can drive ball screw turns, cause sliding block along line slideway by the speed specified and apart from being moved
It is dynamic, so that the near field noise to measured piece is tested.
Optionally, the first straight line moving link, second straight line moving link and the 3rd linear motion component can also be
Hydraulic pressure slides cylinder mechanism, and when the component that moves along a straight line is that hydraulic pressure slides cylinder structure, corresponding drive mechanism can also be and hydraulic pressure
Slide the corresponding drive mechanism of cylinder mechanism, such as hydraulic cylinder, hydraulic circuit.
In addition, linear motion component can also can realize the linear motion component of similar functions, this reality for other
This is not limited with new embodiment, it is within the scope of the utility model is protected.
Further, shown in reference picture 4, device also includes the first sliding block 11, and first straight line moving link 10 includes first
Slide rail 12, fixed structure 60 is slidably connected first slide rail 12 by the first sliding block 11；Specifically, fixed mechanism 60 can be consolidated
Due to the lower section of the first sliding block 11, by the drive fixed mechanism 60 that is slidably connected of the first sliding block 11 and the first slide rail 12 first
Slided on slide rail, it is necessary to which explanation is to show it is that fixed structure 60 is fixed on the first sliding block 11 in Fig. 2 and Fig. 4, in Fig. 2 and figure
Fixed structure 60 not shown in 3；
Second straight line moving link 20 includes the second slide rail 21, and device also includes being arranged on the first slide rail 12 and the second slide rail
The second sliding block 22 between 21；First slide rail 12 is slidably connected the second slide rail 21 by the second sliding block 22；
3rd linear motion component 30 includes the 3rd slide rail 31, and device also includes being arranged on the second slide rail 21 and the 3rd slide rail
The 3rd sliding block 32 between 31；Second slide rail 21 is slidably connected the 3rd slide rail 31 by the 3rd sliding block 32.
Wherein, fixed structure 60 can be slidably connected with first straight line moving link 10 by the first sliding block 11；Fixed knot
Structure 60 directly can also be slidably connected with first straight line moving link 10, as in the contact with the first slide rail 12 of fixed structure 60
Place is set to the structure of slidable connection, and fixed structure 60 can also be slided with first straight line moving link by other means
Connection, the utility model embodiment is not limited to this.
Wherein, the first slide rail 12 of the first straight line moving link 10 not shown in Fig. 2 and Fig. 4.
Further, the first slide rail 12 is detachably connected the second sliding block 22, and the second slide rail 21 is detachably connected the 3rd sliding block
32.Specifically, by taking being detachably connected between the first slide rail 12 and the second sliding block 22 as an example, the structure being detachably connected can join
According to shown in Fig. 5, in addition to this it is possible to be detachably connected mode including other, the utility model embodiment is to specific removable
Connected mode is unloaded not to be limited.
In addition, the 3rd linear motion component 30 be removably mounted on base 40, the mode of being detachably connected can with it is above-mentioned
Between first slide rail 12 and the second sliding block 22 and the second slide rail 21 and the 3rd sliding block 32 to be detachably connected mode identical, can also
Mode is detachably connected for others, the utility model embodiment is not limited to this.
By the first slide rail and the second sliding block, the second slide rail and the 3rd sliding block and the 3rd linear motion component and base it
Between be detachably connected mode so that the device can be dismantled in the case of no, so as to save placement space, and
And be convenient for carrying, while being capable of Fast Installation so that it is more flexibly convenient that the device is used.
Further, fixed structure 60 includes clamping structure, and clamping structure is used to grip velocity of sound probe 50；Specifically
, shown in the structural representation reference picture 6 of clamping structure, the clamping structure can be made up of two clamping plates, in the middle of two clamping plates
Indent is popped one's head in clamping the velocity of sound；If velocity of sound probe is other mechanisms, the clamping structure, which can be corresponded to, to be changed, and the utility model is implemented
Example is not limited to this.
It should be noted that the fixed structure 60 can be the clamping structure, then the clamping structure is fixed on the first cunning
The lower section of block 11 so that moved with movement of first sliding block 11 on the first slide rail 12；The fixed structure 60 can also be included
Clamping structure, such as clamping structure are fixed on the lower section of the first sliding block 11 by other fixtures, and other fixtures can be fixed
Plate etc., clamping structure and other fixtures are referred to as the fixed structure 60；In addition, if the fixed structure can also be other
The utility model embodiment is not limited to this, as long as can be used to fix velocity of sound probe 50.
Further, shown in reference picture 6, the part of clamping structure and velocity of sound probe contacts is the structure that sound-absorbing material is constituted
61；Influence of the structure 61 that sound-absorbing material is constituted for reducing the test that the noise of scanning means generation is popped one's head in the velocity of sound, from
And the accuracy of test result is further increased, reduce the error of test result.
Further, the device also includes displacement transducer 80, installation site and the velocity of sound probe 50 of displacement transducer 80
Installation site it is corresponding；It is preferred that, displacement transducer is installed on the first sliding block；In addition, displacement transducer 80 can also
It is installed on fixed structure 60, specifically, the outside of fixed structure 60 can be installed on.Wherein, the displacement transducer 80 is non-
Tangent displacement sensor, for monitoring velocity of sound probe and the distance on measured piece surface, in addition, the displacement transducer 80
Can be other displacement transducers；Exemplary, if fixed structure 60 includes clamping structure, clamping structure is fixed on the first sliding block
On 11, then displacement transducer 80 can be located at the side of velocity of sound probe 50 on the first sliding block 11, and displacement transducer 80 is slided first
The upper installation site of block 11 is referred to shown in Fig. 7, wherein, the horizontal line of lower section represents measured piece surface, alphabetical s tables in Fig. 7
Show the distance with measured piece surface of displacement transducer test；
It is preferred that, velocity of sound probe 50 fixed structure 60 installation site vertical direction height and displacement transducer 80
Height be consistent so that its measured by the displacement transducer 80 is the distance between with measured piece, so by this away from
From extrapolate velocity of sound probe 50 with a distance from measured piece surface so that test more facilitates succinct；In addition, velocity of sound probe 50
Installation site on fixed structure 60 can also be other, and velocity of sound probe and displacement transducer can be also calculated by other means
The distance between, so as to calculate velocity of sound probe and the distance on measured piece surface by the distance of displacement sensor again.
Further, base 40 is provided with the lock being used for for the movable pulley 41 of base movement and for locking movable pulley 41
Locking structure 42；Shown in reference picture 1, base also includes support bar 43, the first supporting surface 44 and the second supporting surface 45, the 3rd straight line fortune
Dynamic component is located on second supporting surface 45, and the supporting surface 45 of the first supporting surface 44 and second can be rectangle, and the base 40 is also
The chain structure 46 and chain fixed structure 47 used in reinforcing can be included, chain fixed structure is located on support bar 43, should
Chain structure 46, which is located at, to be connected between the corner of the supporting surface of chain fixed structure 47 and first, with the stability to the base 40
Reinforced, so as to improve the overall stability of the device.
The utility model embodiment provides a kind of near field noise scanning tester, because the first straight line fortune of the device
Dynamic component and second straight line moving link, second straight line moving link and the 3rd linear motion component difference slidable connection, and
It is mutually perpendicular to two-by-two between three linear motion components, then forms the motion structure with x, y, z axle, and fixed structure and the
One straight line moving link is slidably connected, and the fixed structure is used to fix velocity of sound probe, so that fixed structure is transported with first straight line
Being slidably connected between dynamic component can be such that velocity of sound probe moves along the axle that first straight line is moved to move along the x-axis, first straight line
Being slidably connected between moving link and second straight line moving link can be such that velocity of sound probe is moved along y-axis, second straight line motion
Being slidably connected between component and the 3rd linear motion component can be moved along the z-axis velocity of sound probe, so as to pass through the device energy
It is enough that each orientation of measured piece is carried out velocity of sound probe can be fixed in Noise scan test, measurement process, so as to
Ensure the uniformity of translational speed and distance, improve the accuracy of test result, and it is easy to operate, it is easy to control, it is to avoid
The problem of personal safety hidden danger that tradition is caused when carrying out noise testing by hand-held to tester, while avoiding people
During hand-held velocity of sound probe, because translational speed and the inconsistent of distance cause sampling inequality, cause test result error larger
Problem；In addition, by the device avoids clamping that the equipment that causes of velocity of sound probe is wasted, cost is high by industrial machinery arm,
The problem of not easily shifted and complicated control.
It should be noted that " first " " second " " 3rd " description being related in the utility model embodiment is only used for description
Purpose, and it is not intended that indicating or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.By
This, at least one this feature can be expressed or implicitly include by defining " first ", the feature of " second " " the 3rd ".
Above-mentioned all optional technical schemes, can form alternative embodiment of the present utility model, herein using any combination
No longer repeat one by one.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (12)
1. a kind of near field noise scanning tester, it is characterised in that described device include base, first straight line moving link,
Second straight line moving link, the 3rd linear motion component and the fixed structure for fixing velocity of sound probe；
The 3rd linear motion component is installed on the base, and the first straight line moving link is transported with the second straight line
Dynamic component and the second straight line moving link are slidably connected respectively with the described 3rd linear motion component, and described first is straight
Line moving link, the second straight line moving link and the 3rd linear motion component are mutually perpendicular to two-by-two；
The fixed structure is slidably connected the first straight line moving link.
2. near field noise scanning tester according to claim 1, it is characterised in that described device also includes being used to drive
The first drive mechanism that the fixed structure is slided on the first straight line moving link is moved, for driving the first straight line
The second drive mechanism that moving link is slided on the second straight line moving link, and for driving the second straight line to transport
The 3rd drive mechanism that dynamic component is slided on the described 3rd linear motion component.
3. near field noise scanning tester according to claim 2, it is characterised in that first drive mechanism, institute
State the second drive mechanism and the 3rd drive mechanism includes motor respectively.
4. near field noise scanning tester according to claim 2, it is characterised in that the first straight line moves structure
Part, the second straight line moving link and the 3rd linear motion component are at least ball screw framework or rack-and-pinion cooperation
One kind in structure or chain drive structure.
5. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that described device is also
Including the first sliding block, the first straight line moving link includes the first slide rail, and the fixed structure is slided by first sliding block
Dynamic connection first slide rail；
The second straight line moving link includes the second slide rail, and described device also includes being arranged on first slide rail and described the
The second sliding block between two slide rails；First slide rail is slidably connected second slide rail by second sliding block；
The 3rd linear motion component includes the 3rd slide rail, and described device also includes being arranged on second slide rail and described the
The 3rd sliding block between three slide rails；Second slide rail is slidably connected the 3rd slide rail by the 3rd sliding block.
6. near field noise scanning tester according to claim 5, it is characterised in that first slide rail detachably connects
Second sliding block is connect, second slide rail is detachably connected the 3rd sliding block.
7. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that the fixed knot
Structure includes clamping structure, and the clamping structure is used to clamp the velocity of sound probe.
8. near field noise scanning tester according to claim 7, it is characterised in that the clamping structure and the sound
The part of fast probe contacts is the structure that sound-absorbing material is constituted.
9. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that described device is also
Including displacement transducer, the installation site of institute's displacement sensors is corresponding with the installation site that the velocity of sound is popped one's head in.
10. near field noise scanning tester according to claim 9, it is characterised in that institute's displacement sensors are installed
In on the first sliding block.
11. the near field noise scanning tester according to claim 1-4 any one, it is characterised in that the base
Provided with the locking mechanism for the movable pulley moved for the base and for locking the movable pulley.
12. near field noise scanning tester according to claim 11, it is characterised in that the 3rd linear motion structure
Part is removably mounted on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621455225.7U CN206353053U (en) | 2016-12-28 | 2016-12-28 | A kind of near field noise scanning tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621455225.7U CN206353053U (en) | 2016-12-28 | 2016-12-28 | A kind of near field noise scanning tester |
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| Publication Number | Publication Date |
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| CN206353053U true CN206353053U (en) | 2017-07-25 |
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| CN201621455225.7U Active CN206353053U (en) | 2016-12-28 | 2016-12-28 | A kind of near field noise scanning tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644054A (en) * | 2016-12-28 | 2017-05-10 | 汽-大众汽车有限公司 | Near-field noise scanning testing device |
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2016
- 2016-12-28 CN CN201621455225.7U patent/CN206353053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644054A (en) * | 2016-12-28 | 2017-05-10 | 汽-大众汽车有限公司 | Near-field noise scanning testing device |
| CN106644054B (en) * | 2016-12-28 | 2023-12-26 | 一汽-大众汽车有限公司 | Near field noise scanning testing device |
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