CN207318097U - A kind of shafting vibration test fixture - Google Patents
A kind of shafting vibration test fixture Download PDFInfo
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- CN207318097U CN207318097U CN201721090796.XU CN201721090796U CN207318097U CN 207318097 U CN207318097 U CN 207318097U CN 201721090796 U CN201721090796 U CN 201721090796U CN 207318097 U CN207318097 U CN 207318097U
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- connecting shaft
- bearing
- sleeve flange
- vibration test
- test fixture
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Abstract
The utility model provides a kind of shafting vibration test fixture, including connecting shaft, sleeve flange and acceleration transducer；The first end of connecting shaft is connected with bent axle, and the second end of connecting shaft is connected by the inner wall of outer bearing and inner bearing and sleeve flange；The second end of connecting shaft is equipped with first annular protrusion, the first annular raised inner ring out against inner bearing；The second end end of connecting shaft is equipped with compressing member, and compressing member inwardly compresses the inner ring of outer bearing；Sleeve flange between outer bearing and inner bearing is equipped with the second annular protrusion, and the second annular protrusion is against the outer ring of outer bearing and inner bearing；Acceleration transducer is arranged on sleeve flange, gathers the vibration information of sleeve flange.Connecting shaft is moved with crankshaft-synchronous in the utility model, and sleeve flange does not rotate, and passes through the vibration of the axially and radially movement reflection bent axle of sleeve flange；First annular raised, the second annular protrusion and compressing member coordinate, and avoid bearing outer ring from axially and radially being rocked with inner ring, ensure that test is accurate.
Description
Technical field
It the utility model is related to engine detection technique field, and in particular to a kind of shafting vibration test fixture.
Background technology
Bent axle is the very important parts of engine, to bear gas pressure, torsional moment, bending force and inertia at the same time
Power etc. acts on, and the moment of torsion on each crank throw is collected and drives other machinery rotation actings.Therefore, crankshaft vibration can to engine
By property, NVH performances influence very big.
Due to the architectural feature of bent axle, and bent axle is always in ceaselessly rotary motion, can not directly carry out contact measurement.
The measurement method of the vibration to bent axle is mainly non-contacting electromagnetic type test method at present.Its basic principle is as follows, is rotating
By middle axis connection between axis and I. C. engine crankshaft, gear is with rotating axis connection and passing through bearing phase with crank rotation, housing
It is rotatable for rotation axis.During test, housing is fixed, electromagnetic sensor is installed in the mounting hole on housing, and opposite tooth
Wheel.When gear rotates, gear cutting magnetic line, so that electromagnetic sensor inductive signal and exporting.
But above-mentioned test method still suffers from defect：Housing is rotatable relative to rotation axis by bearing, due to bearing
There are gap with ball for inner ring and outer ring；When engine is run, bearing inner race exists with ball and bearing outer ring with ball
Impact phenomenon, makes electromagnetic sensor when gathering acceleration signal, and serious random shock interference occurs.
Utility model content
(1) technical problems to be solved
The purpose of this utility model is to provide a kind of shafting vibration test fixture, to solve in existing measuring technology middle (center) bearing
Circle is impacted with ball and bearing outer ring with ball, causes sensor to gather the problem of information is inaccurate.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of shafting vibration test fixture, including connecting shaft, set
Drum flange and acceleration transducer；Wherein, the first end of the connecting shaft is connected with bent axle, and the second end of the connecting shaft passes through
Outer bearing and inner bearing are connected with the inner wall of the sleeve flange；The second end of the connecting shaft is equipped with first annular protrusion,
The first annular raised inner ring out against the inner bearing；The second end end of the connecting shaft is equipped with compressing member, institute
State the inner ring that compressing member inwardly compresses the outer bearing；Sleeve flange between the outer bearing and inner bearing is equipped with the second ring
Shape is raised, and second annular protrusion is against the outer ring of the outer bearing and inner bearing；The acceleration transducer is arranged on described
On sleeve flange, for gathering the vibration information of the sleeve flange.
Wherein, the compressing member includes fastening bolt and compress gasket, along its axis on the second end end of the connecting shaft
The connecting shaft is fixed on by the fastening bolt to equipped with the threaded hole coordinated with the fastening bolt, the compress gasket
End on, and inwardly compress the inner ring of the outer bearing.
Wherein, the sleeve flange is equipped with through hole, and the through hole is connected with fixed rope.
Wherein, the through hole is bolted with extension, and the extension bolt is connected with the fixed rope.
Wherein, the sleeve flange is equipped with the flat portion of milling, and the acceleration transducer is arranged in the flat portion of the milling.
Wherein, the acceleration transducer is pasted onto in the flat portion of the milling.
Wherein, the inner ring of the inner bearing and outer bearing with the connecting shaft clearance fit.
Wherein, the first end of the connecting shaft is equipped with the flange being connected with the bent axle.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages that：
A kind of shafting vibration test fixture provided by the utility model, connecting shaft is moved with crankshaft-synchronous, and sleeve flange
Do not rotate, by the vibration of the axially and radially movement reflection bent axle of sleeve flange, without being carried out to the bent axle under rotation status
Measurement, test process are convenient and simple.Meanwhile pass through first annular raised the second convex annular with sleeve flange in connecting shaft
Rise and coordinate, the inner ring of inner bearing and outer ring are compressed with ball, eliminate the gap of inner bearing inner ring and outer ring；Pass through second
Annular protrusion and the compressing member of connecting shaft second end end coordinate, and the inner ring of outer bearing and outer ring are compressed with ball, eliminated
Outer bearing inner ring and the gap of outer ring；Avoid bearing outer ring from axially and radially being rocked with inner ring, ensure that test is accurate.In addition, work
Packing quality is small, small on crankshaft vibration influence, rigidity itself is big, and deformation is small, is further ensured that test is accurate.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of shafting vibration test fixture of the utility model；
Fig. 2 is the structure diagram of connecting shaft in a kind of shafting vibration test fixture of the utility model；
Fig. 3 is a kind of structure diagram of shafting vibration test fixture middle sleeve flange of the utility model；
Fig. 4 is a kind of front view of shafting vibration test fixture sleeve flange of the utility model；
Description of reference numerals
1- connecting shafts；2- sleeve flanges；3- compress gaskets；4- fastening bolts；5- outer bearings；6- inner bearings；7- threaded holes；
The first annular protrusions of 8-；9- flange holes；The second annular protrusions of 10-；The flat portion of 11- millings；12- through holes.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Example is used to illustrate the utility model, but is not intended to limit the scope of the present invention.
, it is necessary to which explanation, unless otherwise indicated, " multiple " are meant that two or two in the description of the utility model
More than a；The instruction such as term " on ", " under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", " afterbody "
Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplification is retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for description purpose, and
It is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
As shown in Figs 1-4, it is a kind of shafting vibration test fixture provided in this embodiment, including connecting shaft 1, sleeve flange
2 and acceleration transducer.
The first end of connecting shaft 1 is connected with bent axle, and the second end of connecting shaft 1 passes through outer bearing 5 and inner bearing 6 and sleeve method
The inner wall connection of orchid 2.In the present embodiment, the first end of connecting shaft 1 is equipped with the flange being connected with bent axle, and flange is equipped with flange hole
9；The inner ring of inner bearing 6 and outer bearing 5 with 1 clearance fit of connecting shaft.
The second end of connecting shaft 1 is equipped with first annular raised 8, first annular raised 8 out against in inner bearing 6
Circle；The second end end of connecting shaft 1 is equipped with compressing member, and compressing member inwardly compresses the inner ring of outer bearing 5；Outer bearing 5 and inner bearing 6
Between sleeve flange 2 be equipped with the second annular protrusion 10, the second annular protrusion 10 is against the outer ring of outer bearing 5 and inner bearing 6；
In the present embodiment, compressing member includes fastening bolt 4 and compress gasket 3, the second end end of connecting shaft 1 along its be axially arranged with tightly
The threaded hole 7 that fixing bolt 4 coordinates, compress gasket 3 are fixed on by fastening bolt 4 on the end of connecting shaft 1, and are inwardly compressed outer
The inner ring of bearing 5.
Acceleration transducer is arranged on sleeve flange 2, for gathering the vibration information of sleeve flange 2.Vibration information includes
The axially and radially movable information of sleeve flange.In the present embodiment, sleeve flange 2 is equipped with the flat portion 11 of milling, and acceleration transducer glues
It is attached in the flat portion 11 of milling.
Further, sleeve flange 2 is equipped with through hole 12, and through hole 12 is connected with fixed rope.Further, through hole 12 is with prolonging
Stay bolt connects, and extends bolt and is connected with fixed rope.
The present embodiment provides a kind of shafting vibration test fixture, connecting shaft is moved with crankshaft-synchronous, and sleeve flange does not rotate,
By the vibration of the axially and radially movement reflection bent axle of sleeve flange, without being measured to the bent axle under rotation status, survey
Examination process is convenient and simple.Meanwhile coordinated by first annular raised the second annular protrusion with sleeve flange in connecting shaft,
The inner ring of inner bearing and outer ring are compressed with ball, eliminate the gap of inner bearing inner ring and outer ring；Pass through the second annular protrusion
Coordinate with the compressing member of connecting shaft second end end, the inner ring of outer bearing and outer ring are compressed with ball, eliminated in outer bearing
Circle and the gap of outer ring；Inside and outside axially and radially rocking between bearing outer ring and inner ring is avoided, ensure that test is accurate.Separately
Outside, frock quality is small, small on crankshaft vibration influence, and rigidity is big, deformation itself is small, is further ensured that test is accurate.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of shafting vibration test fixture, it is characterised in that including connecting shaft, sleeve flange and acceleration transducer；Wherein,
The first end of the connecting shaft is connected with bent axle, and the second end of the connecting shaft passes through outer bearing and inner bearing and the sleeve method
Blue inner wall connection；The second end of the connecting shaft is equipped with first annular protrusion, and the first annular protrusion is out against institute
State the inner ring of inner bearing；The second end end of the connecting shaft is equipped with compressing member, and the compressing member inwardly compresses the outer bearing
Inner ring；Sleeve flange between the outer bearing and inner bearing is equipped with the second annular protrusion, and second annular protrusion supports
By the outer ring of the outer bearing and inner bearing；The acceleration transducer is arranged on the sleeve flange, for gathering the set
The vibration information of drum flange.
2. shafting vibration test fixture according to claim 1, it is characterised in that the compressing member include fastening bolt and
Compress gasket, the second end of the connecting shaft are axially arranged with the threaded hole coordinated with the fastening bolt, the clamping pad along it
Piece is fixed on by the fastening bolt on the end of the connecting shaft, and inwardly compresses the inner ring of the outer bearing.
3. shafting vibration test fixture according to claim 2, it is characterised in that the sleeve flange is equipped with through hole,
The through hole is connected with fixed rope.
4. shafting vibration test fixture according to claim 3, it is characterised in that the through hole is bolted with extension,
The extension bolt is connected with the fixed rope.
5. shafting vibration test fixture according to claim 1, it is characterised in that the sleeve flange is equipped with the flat portion of milling,
The acceleration transducer is arranged in the flat portion of the milling.
6. shafting vibration test fixture according to claim 5, it is characterised in that the acceleration transducer is pasted onto institute
State in the flat portion of milling.
7. shafting vibration test fixture according to claim 1, it is characterised in that the inner ring of the inner bearing and outer bearing
With the connecting shaft clearance fit.
8. according to claim 1-7 any one of them shafting vibration test fixtures, it is characterised in that the first of the connecting shaft
End is equipped with the flange being connected with the bent axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721090796.XU CN207318097U (en) | 2017-08-29 | 2017-08-29 | A kind of shafting vibration test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721090796.XU CN207318097U (en) | 2017-08-29 | 2017-08-29 | A kind of shafting vibration test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318097U true CN207318097U (en) | 2018-05-04 |
Family
ID=62432392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721090796.XU Active CN207318097U (en) | 2017-08-29 | 2017-08-29 | A kind of shafting vibration test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207318097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698412A (en) * | 2023-08-08 | 2023-09-05 | 济宁精益轴承有限公司 | Bearing test mechanism and use method thereof |
-
2017
- 2017-08-29 CN CN201721090796.XU patent/CN207318097U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698412A (en) * | 2023-08-08 | 2023-09-05 | 济宁精益轴承有限公司 | Bearing test mechanism and use method thereof |
| CN116698412B (en) * | 2023-08-08 | 2023-10-20 | 济宁精益轴承有限公司 | Bearing test mechanism and use method thereof |
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