CN106404411A - Engine stand crankshaft torsional oscillation test device and test method thereof - Google Patents
Engine stand crankshaft torsional oscillation test device and test method thereof Download PDFInfo
- Publication number
- CN106404411A CN106404411A CN201610741450.5A CN201610741450A CN106404411A CN 106404411 A CN106404411 A CN 106404411A CN 201610741450 A CN201610741450 A CN 201610741450A CN 106404411 A CN106404411 A CN 106404411A
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- encoder
- hole
- frock
- fixed
- pulley
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/12—Testing internal-combustion engines by monitoring vibrations
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses an engine stand crankshaft torsional oscillation test device and a test method thereof. The device comprises a crank pulley having an engine, wherein a center of the crank pulley is provided with a limit hole, a bolt is arranged in the limit hole in a penetration mode, a pulley tool is fixed through the bolt, the pulley tool can rotate along with the crank pulley, one side of the pulley tool is close to the crank pulley, the other side of the pulley tool is connected with an encoder tool, the encoder tool comprises a foundation and a connection shaft which are integrated, the foundation is detachably fixed on the pulley tool, the connection shaft is fixed on the foundation, a cross section diameter of the connection shaft is smaller than that of the foundation, a side wall of the connection shaft is provided with multiple mounting holes, limit screws are arranged in the mounting holes in a penetration mode, an end portion of the connection shaft is provided with a rotation shaft hole, a center line of the rotation shaft hole is mutually perpendicular to a center line of the mounting holes, a rotation shaft is arranged in the rotation shaft hole in a penetration mode, and an encoder is fixed on the rotation shaft.
Description
Technical field
The present invention relates to a kind of engine pedestal crankshaft torsional vibrations experimental rig and its specific test method.
Background technology
With the requirement more and more higher to car load comfortableness for the user, each depot is also more next to power assembly NVH performance requirement
Harsher, so each correlation test of power assembly NVH seems important all the more.Wherein, engine torsional oscillation is impact car load comfortableness
A double recipe face, engine torsional test be then NVH test in a big event part.Each flat in DAE engine
During platform project development is carried out, engine torsional oscillation level is all an important performance assessment criteria.But DAE current torsional test project is firm
Ground zero, not ripe torsional test method.This test method patented invention is based on engine pedestal torsional test, specification
The torsional test method of standard, makes the test can effectively accurately carry out.
Content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of engine pedestal crankshaft torsional vibrations are tested
Device.
The concrete technical scheme of the present invention is as follows；
A kind of engine pedestal crankshaft torsional vibrations experimental rig, includes the crank pulley of engine, described crankshaft pulley
Wheel, by its rotation of engine driving, offers spacing hole at the center of described crank pulley, is equipped with described spacing hole
Bolt, described bolt includes key and bolt head, and described key is fed through described spacing hole, shapes in one end of described key
There is described bolt head, described key is fixed with belt pulley frock, described belt pulley work on the one end be formed with bolt head
Can rotate with described crank pulley；
Described belt pulley frock side is reclined with described crank pulley, and opposite side is connected with encoder equipment, described volume
Code device frock includes integrally formed base and connecting shaft, and described base is removably attached in described belt pulley frock,
Described connecting shaft is fixed on base and its section footpath is less than described base, the side wall of described connecting shaft offers to
Few two installing holes, are equipped with limited screw in described installing hole, offer shaft hole in described connection shaft end, described turn
The center line of axis hole is mutually perpendicular to the center line of described installing hole, is equipped with rotating shaft in described shaft hole, and by described
Limited screw be fixed in described shaft hole, described rotating shaft is fixed with encoder.
Preferred as the present invention, described being removably secured refers to that the mode that described base by thread connects is fixed on
In described belt pulley frock.
As the improvement of the present invention, described being removably secured refers to offer pin-and-hole on described base, in described belt
The correspondence position of wheel work also offers pin-and-hole, and described heel pin is connected in described belt pulley frock.
A kind of method tested using above-mentioned engine pedestal crankshaft torsional vibrations experimental rig, including having the following steps：
1), by the center alignment at the center of belt pulley frock and crank pulley, then by bolt, both are fixed on
Together, after fixing, belt pulley frock can rotate together at the same speed with crank pulley；
2), opened up external screw thread in the outer ring of belt pulley frock, corresponding internal thread has been offered on encoder equipment, led to
Encoder equipment is fixed in belt pulley frock the mode crossing rotation, offers shaft hole, in rotating shaft on encoder equipment
The mode that is threaded connection in hole is fixed with rotating shaft, and this rotating shaft can rotate at the same speed with crank pulley；
3), on the other end of rotating shaft, fix encoder, the every umber of pulse that turns of this encoder is 1024, in encoder peripheral hardware
Put and adopt equipment for the number gathering rotational speed pulse signal, and according to formula ω=(360 °/every turn umber of pulse)/dtn [°/s]
Go out the numerical value of transient state rotational angular velocity ω.
Compared with prior art, it is an advantage of the current invention that：Can be installed by a series of structures in pulley end
Encoder, adopts equipment by number and gathers tach signal, thus recording the torsional oscillation level of engine crankshaft.This test method is main
On this basis, the specification experimental condition of engine torsional test, test preparation, sensor installation method, test
Step, Data Management Analysis and corresponding evaluation criterion, are effectively accurately tested such that it is able to guidance technology person.
Brief description
Fig. 1 is the structural representation of engine pedestal crankshaft torsional vibrations experimental rig in the embodiment of the present invention；
Fig. 2 is embodiment of the present invention middle belt pulley tool structure schematic diagram；
Fig. 3 is encoder equipment structural representation in the embodiment of the present invention.
Specific embodiment
Reference picture 1- Fig. 3 does to the embodiment of engine pedestal crankshaft torsional vibrations experimental rig and its test method in the present invention
Further illustrate.
As shown in Figure 1-Figure 3, the present embodiment is a kind of engine pedestal crankshaft torsional vibrations experimental rig, includes engine
Crank pulley 1, this crank pulley provides driving force by engine, drives it to rotate, at the center of crank pulley
Offer spacing hole 11, spacing hole be equipped with bolt 2, this bolt is single ended bolt, and it has bolt head 21, key 22,
Bolt head is set in wherein one end of key, and the diameter of this bolt head is greater than the diameter of spacing hole, and the diameter of key will
Less than the diameter of spacing hole, this key is fixed with belt pulley frock 3 on the one end with bolt head, by tightening bolt, can
The side of belt pulley frock to be pressed to the side of crank pulley, and so so that whole belt pulley frock is permissible
Rotate together with crank pulley, both rotating speeds are equal.
It is connected with encoder equipment 4 in the opposite side of belt pulley frock, encoder equipment includes integrally formed base
41 and connecting shaft 42, the mode that base can be threaded connection or pin connects is fixed in belt pulley frock, connecting shaft
Section footpath be less than the section footpath of base, so so that encoder equipment can also be in company with belt pulley frock together constant speed
Rotate.
One circle installing hole 421 circumferentially offered on the side wall of connecting shaft, above-mentioned installing hole is by the outer wall of connecting shaft
Extend inward, be equipped with limited screw 6 wherein, offer shaft hole 422, installing hole and shaft hole in the end of connecting shaft
It is interconnected, and the center line of shaft hole is mutually perpendicular to the center line of described installing hole, is equipped with rotating shaft in shaft hole
5, rotating shaft can be directly protruding into shaft hole and can also be screwed in shaft hole to improve it admittedly preferably by threaded mode
Fixed firmness, workman by above-mentioned limited screw 6, rotating shaft 5 can be fixed in shaft hole, and this rotating shaft is thus permissible
Rotate at the same speed with crank pulley, rotating shaft one end is fixed in shaft hole, and the other end extends in outside, and extend in this rotating shaft
Encoder 7 is fixed with one end outside, encoder does not rotate with rotating shaft, it is used to detect tach signal, coding
Every umber of pulse that turns of device is 1024, is specially provided with for adopting equipment using the number of rotational speed pulse signal, number is adopted outside encoder
Equipment, after collecting rotary speed data, draws transient state angle of rotation speed according to formula ω=(360 °/every turn umber of pulse)/dtn [°/s]
The numerical value of degree ω, this numerical value can reflect the torsional oscillation level of engine crankshaft.
A kind of method tested using above-mentioned engine pedestal crankshaft torsional vibrations experimental rig, includes following step
Suddenly：
1), by the center alignment at the center of belt pulley frock and crank pulley, then by bolt, both are fixed on
Together, after fixing, belt pulley frock can rotate together at the same speed with crank pulley；
2), opened up external screw thread in the outer ring of belt pulley frock, corresponding internal thread has been offered on encoder equipment, led to
Encoder equipment is fixed in belt pulley frock the mode crossing rotation, offers shaft hole, in rotating shaft on encoder equipment
The mode that is threaded connection in hole is fixed with rotating shaft, and this rotating shaft can rotate at the same speed with crank pulley；
3), on the other end of rotating shaft, fix encoder, the every umber of pulse that turns of this encoder is 1024, in encoder peripheral hardware
Put and adopt equipment for the number gathering rotational speed pulse signal, and according to formula ω=(360 °/every turn umber of pulse)/dtn [°/s]
Go out the numerical value of transient state rotational angular velocity ω.
The above makes the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from this
On the premise of bright principle, some modifications and improvement can also be made, these also should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of engine pedestal crankshaft torsional vibrations experimental rig, includes the crank pulley of engine, described crank pulley
By engine driving its rotate it is characterised in that：Offer spacing hole at the center of described crank pulley, in described spacing hole
In be equipped with bolt, described bolt includes key and bolt head, and described key is fed through described spacing hole, in described key
One end is formed with described bolt head, and described key is fixed with belt pulley frock, described skin on the one end be formed with bolt head
Belt wheel work can rotate with described crank pulley；
Described belt pulley frock side is reclined with described crank pulley, and opposite side is connected with encoder equipment, described encoder
Frock includes integrally formed base and connecting shaft, and described base is removably attached in described belt pulley frock, described
Connecting shaft is fixed on base and its section footpath is less than described base, offers at least two on the side wall of described connecting shaft
Individual installing hole, is equipped with limited screw in described installing hole, offers shaft hole in described connection shaft end, described shaft hole
Center line be mutually perpendicular to the center line of described installing hole, described shaft hole is equipped with rotating shaft, and by described limit
Position screw is fixed in described shaft hole, is fixed with encoder in described rotating shaft.
2. engine pedestal crankshaft torsional vibrations experimental rig according to claim 1 it is characterised in that：Described removably solid
Surely refer to that the mode that described base by thread connects is fixed in described belt pulley frock.
3. engine pedestal crankshaft torsional vibrations experimental rig according to claim 1 it is characterised in that：Described removably solid
Surely refer to offer pin-and-hole on described base, also offer pin-and-hole in the correspondence position of described belt pulley work, described heel pin
It is connected in described belt pulley frock.
4. a kind of method tested using engine pedestal crankshaft torsional vibrations experimental rig as claimed in claim 1, including
Have the following steps：
1), by the center alignment at the center of belt pulley frock and crank pulley, then by bolt, both are fixed together,
After fixation, belt pulley frock can rotate together at the same speed with crank pulley；
2) encoder equipment is fixed in belt pulley frock the mode, being threaded connection, and offers on encoder equipment
Shaft hole, the mode that is threaded connection in shaft hole is fixed with rotating shaft, and this rotating shaft can rotate at the same speed with crank pulley；
3), on the other end of rotating shaft, fix encoder, the every umber of pulse that turns of this encoder is 1024, arranges outside encoder
Number for gathering rotational speed pulse signal adopts equipment, and draws wink according to formula ω=(360 °/every turn umber of pulse)/dtn [°/s]
The numerical value of state rotational angular velocity ω.
5. test method according to claim 4 it is characterised in that：Step 2) in, open up in the outer ring of belt pulley frock
External screw thread, offers corresponding internal thread on encoder equipment, by way of rotation, encoder equipment is fixed on skin
In belt wheel frock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741450.5A CN106404411A (en) | 2016-08-26 | 2016-08-26 | Engine stand crankshaft torsional oscillation test device and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741450.5A CN106404411A (en) | 2016-08-26 | 2016-08-26 | Engine stand crankshaft torsional oscillation test device and test method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404411A true CN106404411A (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610741450.5A Pending CN106404411A (en) | 2016-08-26 | 2016-08-26 | Engine stand crankshaft torsional oscillation test device and test method thereof |
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| CN (1) | CN106404411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869512A (en) * | 2018-09-06 | 2018-11-23 | 广西玉柴机器股份有限公司 | The belt pulley clamp nut of speed probe can be connected |
Citations (5)
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|---|---|---|---|---|
| KR20100058175A (en) * | 2008-11-24 | 2010-06-03 | 자동차부품연구원 | The test apparatus of the balance shaft module |
| CN201837449U (en) * | 2010-07-15 | 2011-05-18 | 宁波拓普制动系统有限公司 | Torsional vibration tester for novel crankshaft torsional vibration damper |
| CN104198031A (en) * | 2014-07-30 | 2014-12-10 | 东风康明斯发动机有限公司 | Torsional vibration signal detection method and device for engine crankshaft |
| CN204740256U (en) * | 2015-07-25 | 2015-11-04 | 江铃汽车股份有限公司 | Engine crankshaft rotational speed test fixture |
| CN105092021A (en) * | 2015-04-30 | 2015-11-25 | 浙江海洋学院 | Device and method for testing marine-shafting torsion vibration |
-
2016
- 2016-08-26 CN CN201610741450.5A patent/CN106404411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100058175A (en) * | 2008-11-24 | 2010-06-03 | 자동차부품연구원 | The test apparatus of the balance shaft module |
| CN201837449U (en) * | 2010-07-15 | 2011-05-18 | 宁波拓普制动系统有限公司 | Torsional vibration tester for novel crankshaft torsional vibration damper |
| CN104198031A (en) * | 2014-07-30 | 2014-12-10 | 东风康明斯发动机有限公司 | Torsional vibration signal detection method and device for engine crankshaft |
| CN105092021A (en) * | 2015-04-30 | 2015-11-25 | 浙江海洋学院 | Device and method for testing marine-shafting torsion vibration |
| CN204740256U (en) * | 2015-07-25 | 2015-11-04 | 江铃汽车股份有限公司 | Engine crankshaft rotational speed test fixture |
Non-Patent Citations (2)
| Title |
|---|
| 车定新: "发动机曲轴扭振计算与实验分析研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869512A (en) * | 2018-09-06 | 2018-11-23 | 广西玉柴机器股份有限公司 | The belt pulley clamp nut of speed probe can be connected |
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Application publication date: 20170215 |