CN201748999U - Centroid and rotary inertia tester of engine assembly - Google Patents
Centroid and rotary inertia tester of engine assembly Download PDFInfo
- Publication number
- CN201748999U CN201748999U CN2010202373649U CN201020237364U CN201748999U CN 201748999 U CN201748999 U CN 201748999U CN 2010202373649 U CN2010202373649 U CN 2010202373649U CN 201020237364 U CN201020237364 U CN 201020237364U CN 201748999 U CN201748999 U CN 201748999U
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- engine assembly
- bracing
- strutting arrangement
- balance
- frame
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Abstract
The utility model discloses a centroid and rotary inertia tester of an engine assembly. The engine assembly is fixed on a position adjusting device; the position adjusting device can realize the coaxial 90-degree rotation of the engine assembly; the position adjusting device is arranged on a supporting device; the coaxial and longitudinal positions of the position adjusting device can be realized; the supporting device is arranged on a frame-type swing disc through an annular plane bearing rotating mechanism; the locating holes of corresponding angle positions are arranged on the frame-type swing disc; the supporting device is provided with a locating pin and can rotate on the frame-type swing disc; the frame-type swing disc is connected with a fixed beam through a swing disc supporting device; the position adjusting device is provided with a stress sensor; a frequency sensor is arranged on the frame-type swing disc; and signals are transferred to a PC through a transmission line. The centroid and rotary inertia tester of the engine assembly has a simple structure, can conveniently and accurately test the centroid and rotary inertia of large-medium size diesel engine assemblies, and provides key performance parameters for optimizing the suspension design of the engine assembly.
Description
Technical field
The utility model relates to the test of a kind of engine assembly barycenter and moment of inertia.
Technical background
At present, automotive field noise and vibration NVH more and more has been subjected to the extensive concern of society.Engine is as the main vibration and the noise source of automobile, and the design that reasonably suspends can effectively reduce the transport of engine luggine to car load, thereby improves the NVH performance of automobile.The barycenter and the moment of inertia that accurately obtain engine assembly (comprising engine and wheel box) are the key parameters that suspends and design.For the gasoline engine or the diesel engine of lighter weight, adopt torsional technique to measure its barycenter and moment of inertia usually.And in big-and-middle-sized engine such as powerful diesel engine because engine assembly quality volume is big, adopt this method to measure difficulty, and inaccurate.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of engine assembly barycenter and rotational inertia test apparatus, uses this device can test the barycenter and the moment of inertia of big-and-middle-sized engine assembly convenient, exactly.
The technical scheme that the utility model adopted is: engine assembly barycenter and rotational inertia test apparatus, engine assembly is fixed on the apparatus for adjusting position, apparatus for adjusting position can be realized the axial half-twist of engine assembly, apparatus for adjusting position is installed on the bracing or strutting arrangement, apparatus for adjusting position can carry out axially and the lengthwise position adjustment, bracing or strutting arrangement is installed on the frame balance by planar annular bearing rotating mechanism, the frame balance is provided with the pilot hole of respective angles position, bracing or strutting arrangement is provided with register pin, bracing or strutting arrangement can rotate on the frame balance, the frame balance is connected with fixed beam by the balance bracing or strutting arrangement, the stress induction device is installed on the apparatus for adjusting position, on the frame balance frequency sensor is installed, signal passes to the pc machine by transmission line.
Above-mentioned engine assembly barycenter and rotational inertia test apparatus, the balance bracing or strutting arrangement comprises the frame balance, fixed beam, balance bracing or strutting arrangement bearing and hinged lock, the balance bracing or strutting arrangement is connected with fixed beam by bearing, and hinged lock is positioned between frame balance and the fixed beam.
The beneficial effects of the utility model are: a kind of testing apparatus to engine assembly barycenter and moment of inertia is provided.This apparatus structure is simple, and can test the barycenter and the moment of inertia of big-and-middle-sized diesel engine assembly easily and accurately, provides critical performance parameters for the optimization engine assembly suspends to design.
Description of drawings
Fig. 1 is a structural representation of the present utility model; Fig. 2 is the bracing or strutting arrangement of balance; Fig. 3 is a balance annular bearing rotating mechanism synoptic diagram; Fig. 4 is the apparatus for adjusting position synoptic diagram; Fig. 5 is the bracing or strutting arrangement synoptic diagram; Coordinate system is according to the engine assembly set positions, and directions X is called axially simultaneously, the Y direction is called vertically, the Z direction is called vertical direction.
Among the figure: 1 is the balance bracing or strutting arrangement, and 2 is engine assembly, and 3 is apparatus for adjusting position, 4 is bracing or strutting arrangement, and 5 is the frame balance, and 6 is planar annular bearing rotating mechanism, 7 is the frequency inductor, and 8 is PC, and 9 is fixed beam, 10 is the bracing or strutting arrangement bearing, 11 is hinged lock, and 12 is pilot hole, and 13 is the cross rotary handle, 14 is the apparatus for adjusting position rolling bearing, 15 is register pin, and 16 is back shaft, and 17 is chuck, 18 for regulating set bolt, 19 is support slipper, and 20 is pilot hole, and 21 is strain gauge, 22 is the positioning of rotating pin, and 23 is the along slope coordinate scale.
Embodiment
The concrete structure of engine assembly barycenter of the present utility model and rotational inertia test apparatus is shown in Fig. 1-5.Engine assembly barycenter and rotational inertia test apparatus, engine assembly 2 is fixed on the apparatus for adjusting position 3, apparatus for adjusting position 3 can be realized engine assembly 2 axial half-twists, apparatus for adjusting position 3 is installed on the bracing or strutting arrangement 4, can carry out axially and the lengthwise position adjustment with respect to bracing or strutting arrangement 4, bracing or strutting arrangement 4 is installed on the frame balance 5 by planar annular bearing rotating mechanism 6, bracing or strutting arrangement 4 can rotate on frame balance 5, frame balance 5 is connected with fixed beam 9 by balance bracing or strutting arrangement 1, can in 5 ~ 10 ° of scopes, swing, strain gauge 21 is installed on the apparatus for adjusting position 3, frequency sensor 7 is arranged on the frame balance 4, and signal passes to pc machine 8 by transmission line.
Concrete structure: balance bracing or strutting arrangement 1 forms 11 by balance bracing or strutting arrangement bearing 10 and hinged lock, the inner ring of balance bracing or strutting arrangement bearing 10 is connected in fixed beam 9, the outer ring is welded on the frame balance 5, hinged lock 11 is welded on the frame balance 5, when hinged lock 11 locks, frame balance 5 stationkeeping can not then can freely swing during release with 10 swings of bracing or strutting arrangement bearing.But frame balance 5, planar annular bearing rotating mechanism 6 and frequency inductor 7 are formed swing part.Planar annular bearing rotating mechanism 6 is fixed on the frame balance 5, and 4 pilot holes 12 are arranged on the frame balance 5, corresponds respectively to 0 °, 30 °, 60 ° and 90 °.Apparatus for adjusting position is made up of chuck 17, apparatus for adjusting position rolling bearing 14, back shaft 16, cross rotary handle 13 and register pin 15; By regulating set bolt 18, chuck 17 can stationary engine assembly 2; Back shaft 16 is marked with axial coordinate; Apparatus for adjusting position rolling bearing 14 outer rings and support slipper 19 welding, inner ring is a sliding bearing, back shaft 16 can endwisely slip; Two strain gauges 21 and a pilot hole 20 are arranged below the support slipper 19, and support slipper 19 is placed on the bracing or strutting arrangement 4; Two register pins 15 are arranged on the cross rotary handle 13, and respectively at differing on 90 ° of two handles, in register pin 15 insertion pilot holes 20, apparatus for adjusting position 3 can not rotate.Bracing or strutting arrangement 4 and positioning of rotating pin 22 are formed support section, and along slope coordinate scale 23 is arranged on the bracing or strutting arrangement 4, and bracing or strutting arrangement 4 can rotate on planar annular bearing rotating mechanism 6.
Concrete implementation step:
Fixedly the frame balance 5: hinged lock 11 on the bracing or strutting arrangement 1 is in the lock state frame balance 5 fixing can not swings.
Engine assembly 2 is installed, engine assembly 2 is installed in the apparatus for adjusting position 3 between the chuck 17, be fixed with adjusting set bolt 18 simultaneously.
Place the apparatus for adjusting position of engine assembly 2: apparatus for adjusting position 3 is placed on (bracing or strutting arrangement 4 positioning of rotating pins 22 are inserted in 0 ° of position of pilot hole 12) on the bracing or strutting arrangement 4, register pin 15 is inserted in support slipper 19 pilot holes 20.
Read engine assembly 2 centers of gravity (projection is in X, Y in-plane) position: according to the signal of strain gauge 21, PC 8 calculates engine assembly 2 centers of gravity (projection and X, Y in-plane) position.According to PC 8 information, axially and vertically move apparatus for adjusting position 3, obtain the center of gravity and planar annular bearing rotating mechanism 7 center-aligned of engine assembly.
Test: with hinged lock 11 releases, (5 ~ 10 °) swing frame balance 5 writes down its hunting frequencies by pc machine 8 by a small margin.
Other angle measurement: lock hinged lock 11, discharge positioning of rotating pin 22, rotation support device 4 is in the pilot hole 12 with 30 ° of positioning of rotating pin 22 insertions, according to step
Measure its hunting frequency, the hunting frequency when measuring 60 ° 90 ° equally.
Lock hinged lock 11, discharge register pin 15, the apparatus for adjusting position 3 that utilizes cross rotary handle 13 turn engine assemblys 2 inserts register pin 15 in sliding shoe 19 pilot holes 20 in 90 °.
Repeat after reading engine assembly 2 centers of gravity (projection is in X, Z in-plane) position
Step, X, each hunting frequency of Z placing direction of acquisition engine assembly 2.
Handle by 8 pairs of data collections of PC, obtain the barycenter and the moment of inertia of this engine assembly 2.
The utility model is simple in structure, can test the barycenter and the moment of inertia of big-and-middle-sized diesel engine assembly 2 easily and accurately, provides key parameter for the optimization engine assembly suspends to design.
Claims (2)
1. engine assembly barycenter and rotational inertia test apparatus, it is characterized in that engine assembly is fixed on the apparatus for adjusting position, apparatus for adjusting position can be realized the axial half-twist of engine assembly, apparatus for adjusting position is installed on the bracing or strutting arrangement, apparatus for adjusting position can carry out axially and the lengthwise position adjustment, bracing or strutting arrangement is installed on the frame balance by planar annular bearing rotating mechanism, the frame balance is provided with the pilot hole of respective angles position, bracing or strutting arrangement is provided with register pin, bracing or strutting arrangement can rotate on the frame balance, the frame balance is connected with fixed beam by the balance bracing or strutting arrangement, the stress induction device is installed on the apparatus for adjusting position, on the frame balance frequency sensor is installed, signal passes to the pc machine by transmission line.
2. engine assembly barycenter according to claim 1 and rotational inertia test apparatus, it is characterized in that the balance bracing or strutting arrangement comprises the frame balance, fixed beam, balance bracing or strutting arrangement bearing and hinged lock, the balance bracing or strutting arrangement is connected with fixed beam by bearing, and hinged lock is positioned between frame balance and the fixed beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202373649U CN201748999U (en) | 2010-06-25 | 2010-06-25 | Centroid and rotary inertia tester of engine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202373649U CN201748999U (en) | 2010-06-25 | 2010-06-25 | Centroid and rotary inertia tester of engine assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748999U true CN201748999U (en) | 2011-02-16 |
Family
ID=43583674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202373649U Expired - Fee Related CN201748999U (en) | 2010-06-25 | 2010-06-25 | Centroid and rotary inertia tester of engine assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201748999U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507091A (en) * | 2011-11-22 | 2012-06-20 | 天津大学 | Object mass center measuring device and method |
| CN104390741A (en) * | 2014-12-08 | 2015-03-04 | 广西大学 | Auxiliary method of testing inertial parameters of engine power assembly |
| CN105910756A (en) * | 2016-04-18 | 2016-08-31 | 上海诸光机械有限公司 | Pedestal type inertia checking rack |
| CN106289643A (en) * | 2016-10-19 | 2017-01-04 | 北京航星机器制造有限公司 | The center of gravity measurement frock of on-circular cross-section product |
-
2010
- 2010-06-25 CN CN2010202373649U patent/CN201748999U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507091A (en) * | 2011-11-22 | 2012-06-20 | 天津大学 | Object mass center measuring device and method |
| CN102507091B (en) * | 2011-11-22 | 2014-01-15 | 天津大学 | Object mass center measuring device and method |
| CN104390741A (en) * | 2014-12-08 | 2015-03-04 | 广西大学 | Auxiliary method of testing inertial parameters of engine power assembly |
| CN104390741B (en) * | 2014-12-08 | 2017-02-22 | 广西大学 | Auxiliary method of testing inertial parameters of engine power assembly |
| CN105910756A (en) * | 2016-04-18 | 2016-08-31 | 上海诸光机械有限公司 | Pedestal type inertia checking rack |
| CN106289643A (en) * | 2016-10-19 | 2017-01-04 | 北京航星机器制造有限公司 | The center of gravity measurement frock of on-circular cross-section product |
| CN106289643B (en) * | 2016-10-19 | 2018-12-25 | 北京航星机器制造有限公司 | The center of gravity measurement tooling of on-circular cross-section product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20110216 Termination date: 20190625 |