CN101135597A - Measurement mechanism and measurement method for crankshaft assembly dynamic poise - Google Patents
Measurement mechanism and measurement method for crankshaft assembly dynamic poise Download PDFInfo
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- CN101135597A CN101135597A CNA2007100927953A CN200710092795A CN101135597A CN 101135597 A CN101135597 A CN 101135597A CN A2007100927953 A CNA2007100927953 A CN A2007100927953A CN 200710092795 A CN200710092795 A CN 200710092795A CN 101135597 A CN101135597 A CN 101135597A
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Abstract
The invention comprises a motor, a right angle support base, a cylinder elastic support whose both ends are flanges, a hollow shaft, a drive shaft, a L-shaped bracket, a dynamic balancing machine, and a train gauge coated on the cylinder elastic support. In the rotation plane of the crank shaft assembly, along with the orthogonal X,Y directions, simultaneously measuring the unbalance vibration or force signal of the crank shaft assembly running in high speed; after processed by computer, synthesizing the unbalance value along with different directions to form a closed curve graph. The invention also reveals a method thereof.
Description
Technical field
The present invention relates to the dynamically balanced devices and methods therefor of a kind of measurement, especially relate to dynamically balanced measurement mechanism of a kind of crank assemblby and measuring method thereof.
Background technology
The motorcycle engine crankshaft assembly comprises assemblies such as left crank axle, right crank axle, crank pin, connecting rod, piston, piston pin, cylinder sleeve, left bearing, right bearing, crank assemblby is operated under the high-speed rotating conditions, generation is at the dynamic unbalance power of engine, not only comprise the uneven centrifugal force that left and right crankshaft rotation causes, the unbalance inertia force that also has connecting rod, piston to produce simultaneously along the high speed to-and-fro movement of axis direction.Because the acting in conjunction of above two class power, the unbalance inertia force of crank assemblby in the surface of revolution is X, Y plane has with crank axle angle of revolution θ
iThe feature that changes and change, i=1,2 ....Referring to Fig. 6, traditional dynamic balancing machine generally is merely able to measure the data of symmetric shape part or assembly, because uneven centrifugal force remains unchanged on arbitrarily angled, the amount of unbalance that a vibration that any one direction rotor unbalance centrifugal force of needs detection causes or inertial force just can be determined measured rotor.Therefore the balancing stand of all traditional dynamic balancing machines all can only be measured a direction, the normally signal of the unbalance vibration of horizontal direction or power.But, because the size of crank assemblby unbalance inertia force is around crank axle axle center different angles direction θ
kVariation change, in order to adapt to this special measurement requirement, existing traditional measurement method adopts: tested crank assemblby is packed in the special rotary jig, the Y-axis bearing that crank axle is installed is made of one with simulation cylinder sleeve and the anchor clamps of letting live plug, these anchor clamps are fixed on the balancing stand of general dynamic balancing machine, after unclamping anchor clamps, it can be rotated around the crank axle axle center.Direct motor drive crank assemblby high speed rotary, along continuous straight runs are measured the predetermined a series of angle θ of crank assemblby
kUnbalance vibration data on the direction.Generally from θ
1=0 ° of direction begins to measure unbalance vibration signal A
θ 1After measurement finished, the motor that stops unclamped anchor clamps, and crank assemblby is rotated a fixing low-angle together with anchor clamps, and normally 10 ° is θ
2=10 °, behind the clamping device, start motor again, measure θ
2The unbalance vibration signal A of angle direction
θ 2After measurement finished, the motor that stops unclamped anchor clamps, began next angle θ again
3The unbalance vibration signal A of crank assemblby on=20 ° of directions
θ 3Measurement; So repetitive cycling is gone down, and forwards 350 ° one by one to from 0 ° and measures just end.Data print tables of data and are depicted as amount of unbalance with angle θ after machine is handled as calculated
kThe closed orbit trace curve that changes.The dynamic balancing machine that domestic and international manufacturer even internationally famous company produce this type of purposes all is to take aforesaid way.Owing in detection, require constantly repeatedly to open, have a power failure motivation and constantly unclamp, the anchor clamps on clamping and the rotary balance frame, the time cycle of detecting a cover crank assemblby often reaches 30～50 minutes, the cost labour is many, the needs that can not be fine satisfied on-the-spot fast precise detects.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can accurately measure dynamically balanced measurement mechanism of motorcycle crank assemblby and measuring method thereof fast.For achieving the above object, the technical solution used in the present invention is: the dynamically balanced measurement mechanism of crank assemblby, comprise motor, the square supporting seat, two ends are the cylinder elastic bearing of flange, hollow shaft sleeve, transmission shaft, L shaped carriage, adapter sleeve and dynamic balancing machine base, wherein: the square supporting seat is fixed on the dynamic balancing machine base, two ends are that cylinder elastic bearing one end of flange is fixed on the vertical wallboard of square supporting seat, this wallboard center is porose, motor is fixed on the another side relative with this wallboard, and L shaped carriage is fixed on the flexibly mounted other end of hollow cylinder and becomes cantilever-shaped; The axle of motor connects hollow shaft sleeve and transmission shaft, passes wall opening and cylinder elastic bearing endoporus center, is connected with tested crank assemblby by adapter sleeve; On the circle thin-walled cylinder of cylinder elastic bearing near square supporting seat one side, stick foil gauge along horizontal Y-axis line the right and left respectively with both sides about vertical X-axis line, computing machine is sent in the output of foil gauge.
The transmission shaft two ends are spherical, respectively are drilled with a latch through hole at the two ends centre of sphere, and the two through hole axis is orthogonal and all vertical with transmission shaft; The both sides of hollow shaft sleeve respectively are milled with a groove along axis, are connected by latch with transmission shaft; The end of adapter sleeve is milled with two grooves that are parallel to each other, and is connected with the other end of transmission shaft by latch.Described L type carriage comprises Y-axis bearing, left and right sides bearing cap that is connected in the cantilever upper end and the simulation cylinder sleeve that is fixed in the cantilever bottom; Be connected by screw between Y-axis bearing and the left and right sides bearing cap.Along each two foil gauge that paste of horizontal Y-axis line the right and left, form full bridge measurement circuit Ry1, Ry3 and Ry2, Ry4; The vertical X-axis line in edge is each two foil gauge that paste of both sides up and down, composition full bridge measurement circuit Rx1, Rx3 and Rx2, Rx4.
The dynamically balanced measuring method of crank assemblby comprises following steps: 1) left and right sides rolling bearing of crank assemblby to be measured is placed on respectively on the Y-axis bearing of L type carriage, the left and right sides bearing cap that closes is respectively used screws clamp; The piston of crank assemblby inserts in the simulation cylinder sleeve, and the right crank axle of crank assemblby is fixed on the adapter sleeve; 2) actuating motor drives crank assemblby and does high speed rotating; 3) strain transducer of foil gauge composition is converted into electric signal input computing machine to the bending stress of sensing; 4) computing machine obtains the transient equilibrium curve to gathering, handle along the above-said current signal of X, Y direction.
The program that computing machine is handled the electric signal of foil gauge output is: 1) computing machine obtains a series of X to gathering in real time respectively along the electric signal of X, Y direction
θ i, Y
θ iValue, X
θ i, Y
θ iRepresent that respectively the crank assemblby crank angle is θ
iThe components of stress that record respectively along X, Y coordinate direction during the angle, i=1 wherein, 2 ... Na, Na represent the sampling number of crankshaft rotation one-period; 2) the X that collects
θ i, Y
θ iValue projects to one group of uniform angle θ by the crank axle axle center
kRadius on, and with the two addition, k=1,2......Nb, Nb are positive integer and corresponding θ
k=0 °～360 °; 3) from above-mentioned data, determine each θ
kCorresponding amplitude A
θ k, according to the θ that obtains
k-A
θ kThe pass ties up in X, the Y coordinate system and draws the transient equilibrium curve.
Useful technique effect of the present invention is: can measure the transient equilibrium of motorcycle crank assemblby at the scene fast accurately, detection efficiency improves tens times than classic method, saves time and the labour, improves measuring accuracy.
Description of drawings
Accompanying drawing 1 is a structural drawing of the present invention.
Accompanying drawing 2 is the A-A view of Fig. 1.
Accompanying drawing 3 is the B-B view of Fig. 1, i.e. foil gauge installation site synoptic diagram.
The full bridge measurement circuit diagram that accompanying drawing 4 is formed for foil gauge.
Accompanying drawing 5 is dynamically balanced measuring principle figure.
Accompanying drawing 6 is the structural map of traditional dynamic balancing machine;
The dynamic balancing machine structure figure of accompanying drawing 7 on traditional dynamic balancing machine basis, improving to some extent.
In the accompanying drawing: motor 1, square supporting seat 2, cylinder elastic bearing 3, hollow shaft sleeve 5, transmission shaft 6, L shaped carriage 7, latch 4,8, adapter sleeve 9, crank assemblby 10, left side crank axle 10-1, right crank axle 10-2, crank pin 10-3, connecting rod 10-4, piston 10-5, piston pin 10-6, cylinder sleeve 10-7, left bearing 10-8, right bearing 10-9, right bearing lid 11, left bearing lid 12, left shaft holder 13, simulation cylinder sleeve 14, right bearing seat 15, dynamic balancing machine base 16, foil gauge 17,18.
Embodiment
Referring to Fig. 1-Fig. 3, the dynamically balanced measurement mechanism of a kind of crank assemblby, this device comprises motor 1, square supporting seat 2, two ends are the cylinder elastic bearing 3 of flange, hollow shaft sleeve 5, transmission shaft 6, L shaped carriage 7, adapter sleeve 9 and dynamic balancing machine base 16, wherein: square supporting seat 2 is fixed on the dynamic balancing machine base 16, two ends are that cylinder elastic bearing 3 one ends of flange are fixed on the vertical wallboard of square supporting seat 2, this wallboard center is porose, motor 1 is fixed on the another side relative with this wallboard, and the other end that L shaped carriage 7 is fixed on hollow cylinder elastic bearing 3 becomes cantilever-shaped; The axle of motor 1 connects hollow shaft sleeve 5 and transmission shaft 6, passes wall opening and cylinder elastic bearing 3 endoporus centers, is connected with tested crank assemblby by adapter sleeve 9; On the circle thin-walled cylinder of cylinder elastic bearing 3 near square supporting seat 2 one side, stick foil gauge 17,18 along horizontal Y-axis line the right and left respectively with both sides about vertical X-axis line, computing machine is sent in the output of foil gauge 17,18.
Transmission shaft 6 two ends are spherical, respectively are drilled with a latch through hole at the two ends centre of sphere, and the two through hole axis is orthogonal and all vertical with transmission shaft 6; The both sides of hollow shaft sleeve 5 respectively are milled with a groove along axis, are connected by latch 4 with transmission shaft 6; The end of adapter sleeve 9 is milled with two grooves that are parallel to each other, and is connected by the other end of latch 8 with transmission shaft 6.
Described L type carriage 7 comprises Y-axis bearing 13,15, left and right sides bearing cap 11,12 that is connected in the cantilever upper end and the simulation cylinder sleeve 14 that is fixed in the cantilever bottom; Be connected by screw between Y-axis bearing 13,15 and the left and right sides bearing cap 11,12.
When measuring the transient equilibrium of crank assemblby, the left and right sides rolling bearing of crank assemblby to be measured is placed on respectively on the Y-axis bearing 13,15 of L type carriage, the left and right sides bearing cap that closes is respectively used screws clamp; The piston 10-5 of crank assemblby inserts in the simulation cylinder sleeve 14, and adapter sleeve 9 is fixed on the right crank axle 10-2 of crank assemblby.Driving tested crank assemblby rotating process is: the output shaft of motor 1, rotate by the cover of the flat key drive sleeve on the axle 5, hollow shaft sleeve 5 is stirred the latch 4 in the groove, driving transmission shaft 6 rotates, transmission shaft 6 is stuck in two parallel slots of adapter sleeve 9 ends by latch 8, thereby drives the crank assemblby high speed rotating.Because the relative position of latch 4 and 8 in transmission shaft at transmission shaft 6 two ends is mutually 90 °, form the universal shaft coupling device structure, make the driving force of motor 1 be unlikely to disturb to the dynamically balanced measurement of crank assemblby.
Referring to Fig. 3, Fig. 4,, form full bridge measurement circuit Ry1, Ry3 and Ry2, Ry4 along each two foil gauge 18 that paste of horizontal Y-axis line the right and left; The vertical X-axis line in edge is each two foil gauge 17 that paste of both sides up and down, composition full bridge measurement circuit Rx1, Rx3 and Rx2, Rx4.The uneven centrifugal force that the crank assemblby high-speed rotation produces makes tubular elastic bearing 3 be up and down X-axis, about be the bending stress that Y-axis is all changed, the strain transducer of forming by foil gauge converts thereof into electric signal, calculates machine by machine again the electric signal that makes progress along X, Y is gathered respectively, handled.
The dynamically balanced measuring method of a kind of crank assemblby comprises following steps: 1) left and right sides rolling bearing of crank assemblby to be measured is placed on respectively on the Y-axis bearing 13,15 of L type carriage, the left and right sides bearing cap that closes is respectively used screws clamp; The piston 10-5 of crank assemblby inserts in the cylinder sleeve 14, and adapter sleeve 9 is fixed on the right crank axle 10-2 of crank assemblby; 2) actuating motor drives crank assemblby and does high speed rotating; 3) strain transducer of foil gauge 17,18 compositions is converted into electric signal input computing machine to the bending stress of sensing; 4) computing machine obtains the transient equilibrium curve to gathering, handle along the above-said current signal of X, Y direction.
The program that computing machine is handled the electric signal of foil gauge output is: 1) computing machine obtains a series of X to gathering in real time respectively along the electric signal of X, Y direction
θ i, Y
θ iValue, X
θ i, Y
θ iRepresent that respectively the crank assemblby crank angle is θ
iThe components of stress that record respectively along X, Y coordinate direction during the angle, i=1 wherein, 2 ... Na, Na represent the sampling number of crankshaft rotation one-period; 2) the X that collects
θ i, Y
θ iValue projects to one group of uniform angle θ by the crank axle axle center
kRadius on, and with the two addition, k=1,2......Nb, Nb are positive integer and corresponding θ
k=0 °～360 °; 3) from above-mentioned data, determine each θ
kCorresponding amplitude A
θ k, according to the θ that obtains
k-A
θ kThe pass ties up in X, the Y coordinate system and draws the transient equilibrium curve.
Because construction features of the present invention, in the crank assemblby plane of rotation, along mutually perpendicular X, on the Y two-dimensional directional, measure crank assemblby unbalance vibration or force signal in the high-speed rotation simultaneously fast, after Computer Processing, directly synthetic along the uneven value closing diagram of different directions, therefore, utilize the dynamic balancing measurement of march axle assembly of the present invention, on dynamic balancing machine, only need the detected crank assemblby of one-step installation, in tens seconds from the collection of data, handle, the result shows all and finishes, detection efficiency not only improves tens times than classic method, and data acquisition can be more intensive, gathers data for for example per 1 °, and measuring accuracy is also than the obvious improve of classic method.
Claims (6)
1. dynamically balanced measurement mechanism of crank assemblby, it is characterized in that: this device comprises motor (1), square supporting seat (2), two ends are the cylinder elastic bearing (3) of flange, hollow shaft sleeve (5), transmission shaft (6), L shaped carriage (7), adapter sleeve (9) and dynamic balancing machine base (16), wherein: square supporting seat (2) is fixed on the dynamic balancing machine base (16), two ends are that cylinder elastic bearing (3) one ends of flange are fixed on the vertical wallboard of square supporting seat (2), this wallboard center is porose, motor (1) is fixed on the another side relative with this wallboard, and the other end that L shaped carriage (7) is fixed on hollow cylinder elastic bearing (3) becomes cantilever-shaped; The axle of motor (1) connects hollow shaft sleeve (5) and transmission shaft (6), passes wall opening and cylinder elastic bearing (3) endoporus center, is connected with tested crank assemblby by adapter sleeve (9); On the circle thin-walled cylinder of cylinder elastic bearing (3) near square supporting seat (2) one side, stick foil gauge (17,18) along horizontal Y-axis line the right and left respectively with both sides about vertical X-axis line, computing machine is sent in the output of foil gauge (17,18).
2. the dynamically balanced measurement mechanism of crank assemblby according to claim 1 is characterized in that: transmission shaft (6) two ends respectively are drilled with a latch through hole for spherical at the two ends centre of sphere, and the two through hole axis is orthogonal and all vertical with transmission shaft (6); The both sides of hollow shaft sleeve (5) respectively are milled with a groove along axis, are connected by latch (4) with transmission shaft (6); The end of adapter sleeve (9) is milled with two grooves that are parallel to each other, and is connected by the other end of latch (8) with transmission shaft (6).
3. the dynamically balanced measurement mechanism of crank assemblby according to claim 1 is characterized in that: described L type carriage (7) comprises Y-axis bearing (13,15), left and right sides bearing cap (11,12) that is connected in the cantilever upper end and the simulation cylinder sleeve (14) that is fixed in the cantilever bottom; Be connected by screw between Y-axis bearing (13,15) and the left and right sides bearing cap (11,12).
4. the dynamically balanced measurement mechanism of crank assemblby according to claim 1 is characterized in that: along each two foil gauge (18) that paste of horizontal Y-axis line the right and left, form full bridge measurement circuit Ry1, Ry3 and Ry2, Ry4; The vertical X-axis line in edge is each two foil gauge (17) that paste of both sides up and down, composition full bridge measurement circuit Rx1, Rx3 and Rx2, Rx4.
5. dynamically balanced measuring method of crank assemblby, it is characterized in that: this measuring method comprises following steps: 1) left and right sides rolling bearing of crank assemblby to be measured is placed on respectively on the Y-axis bearing of L type carriage, the piston of crank assemblby inserts in the simulation cylinder sleeve, and the right crank axle of crank assemblby is fixed on the adapter sleeve; 2) actuating motor drives crank assemblby and does high speed rotating; 3) strain transducer of foil gauge composition is converted into electric signal input computing machine to the bending stress of sensing; 4) computing machine obtains the transient equilibrium curve to gathering in real time, handle along the above-said current signal of X, Y direction.
6. the dynamically balanced measuring method of crank assemblby according to claim 5 is characterized in that: the program that computing machine is handled the electric signal of foil gauge output is: 1) computing machine obtains a series of X to gathering in real time respectively along the electric signal of X, Y direction
θ i, Y
θ iValue, X
θ i, Y
θ iRepresent that respectively the crank assemblby crank angle is θ
iThe components of stress that record respectively along X, Y coordinate direction during the angle, i=1 wherein, 2 ... Na, Na represent the sampling number of crankshaft rotation one-period; 2) the X that collects
θ i, Y
θ iValue projects to one group of uniform angle θ by the crank axle axle center
kRadius on, and with the two addition, k=1,2......Nb, Nb are positive integer and corresponding θ
k=0 °～360 °; 3) from above-mentioned data, determine each θ
kCorresponding amplitude A
θ k, according to the θ that obtains
k-A
θ kThe pass ties up in X, the Y coordinate system and draws the transient equilibrium curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100927953A CN101135597B (en) | 2007-09-29 | 2007-09-29 | Measurement mechanism and measurement method for crankshaft assembly dynamic poise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100927953A CN101135597B (en) | 2007-09-29 | 2007-09-29 | Measurement mechanism and measurement method for crankshaft assembly dynamic poise |
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| Publication Number | Publication Date |
|---|---|
| CN101135597A true CN101135597A (en) | 2008-03-05 |
| CN101135597B CN101135597B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100927953A Expired - Fee Related CN101135597B (en) | 2007-09-29 | 2007-09-29 | Measurement mechanism and measurement method for crankshaft assembly dynamic poise |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487756B (en) * | 2009-01-13 | 2010-06-02 | 东南大学 | Harmonic component rotational speed balancing method in rotating machinery vibration analysis |
| CN102921567A (en) * | 2012-11-23 | 2013-02-13 | 湖南吉尔森科技发展有限公司 | Protection method and protection equipment for centrifugal machine |
| CN103115726A (en) * | 2013-01-16 | 2013-05-22 | 东南大学 | Rotating parts and components dynamic balance method based on strain |
| CN104502023A (en) * | 2014-12-17 | 2015-04-08 | 天润曲轴股份有限公司 | Crankshaft dynamic balance testing and calibration method |
| CN104792513A (en) * | 2015-05-04 | 2015-07-22 | 长春速建新技术开发有限公司 | Six freedom degree catenary simulation device |
| CN106687791A (en) * | 2014-06-27 | 2017-05-17 | 三菱重工发动机和增压器株式会社 | Vibration measurement device for high-speed rotating machine, and vibration measurement method |
| CN111271150A (en) * | 2020-03-12 | 2020-06-12 | 天津大学 | Strain type engine oil pump control system |
| CN113134820A (en) * | 2021-05-25 | 2021-07-20 | 核工业理化工程研究院 | Pneumatic visible inner weight pasting device for narrow-mouth cylinder |
| CN114354046A (en) * | 2021-12-31 | 2022-04-15 | 徐州徐工挖掘机械有限公司 | Device and method for simultaneously measuring axial force and bending stress of bolt |
| CN114486076A (en) * | 2022-04-14 | 2022-05-13 | 西华大学 | Special test mechanism for dynamic balance of engine crankshaft of hydrogen energy hybrid commercial vehicle |
| CN118424558A (en) * | 2024-07-05 | 2024-08-02 | 济南轻骑铃木摩托车有限公司 | Motorcycle engine production detection device |
| CN114354046B (en) * | 2021-12-31 | 2024-10-29 | 徐州徐工挖掘机械有限公司 | Device and method for simultaneously measuring bolt axial force and bending stress |
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2007
- 2007-09-29 CN CN2007100927953A patent/CN101135597B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487756B (en) * | 2009-01-13 | 2010-06-02 | 东南大学 | Harmonic component rotational speed balancing method in rotating machinery vibration analysis |
| CN102921567A (en) * | 2012-11-23 | 2013-02-13 | 湖南吉尔森科技发展有限公司 | Protection method and protection equipment for centrifugal machine |
| CN102921567B (en) * | 2012-11-23 | 2015-05-20 | 湖南吉尔森科技发展有限公司 | Protection method and protection equipment for centrifugal machine |
| CN103115726B (en) * | 2013-01-16 | 2015-06-03 | 东南大学 | Rotating parts and components dynamic balance method based on strain |
| CN103115726A (en) * | 2013-01-16 | 2013-05-22 | 东南大学 | Rotating parts and components dynamic balance method based on strain |
| CN106687791A (en) * | 2014-06-27 | 2017-05-17 | 三菱重工发动机和增压器株式会社 | Vibration measurement device for high-speed rotating machine, and vibration measurement method |
| CN104502023B (en) * | 2014-12-17 | 2017-02-22 | 天润曲轴股份有限公司 | Crankshaft dynamic balance testing and calibration method |
| CN104502023A (en) * | 2014-12-17 | 2015-04-08 | 天润曲轴股份有限公司 | Crankshaft dynamic balance testing and calibration method |
| CN104792513A (en) * | 2015-05-04 | 2015-07-22 | 长春速建新技术开发有限公司 | Six freedom degree catenary simulation device |
| CN111271150A (en) * | 2020-03-12 | 2020-06-12 | 天津大学 | Strain type engine oil pump control system |
| CN111271150B (en) * | 2020-03-12 | 2021-01-05 | 天津大学 | Strain type engine oil pump control system |
| CN113134820A (en) * | 2021-05-25 | 2021-07-20 | 核工业理化工程研究院 | Pneumatic visible inner weight pasting device for narrow-mouth cylinder |
| CN114354046A (en) * | 2021-12-31 | 2022-04-15 | 徐州徐工挖掘机械有限公司 | Device and method for simultaneously measuring axial force and bending stress of bolt |
| CN114354046B (en) * | 2021-12-31 | 2024-10-29 | 徐州徐工挖掘机械有限公司 | Device and method for simultaneously measuring bolt axial force and bending stress |
| CN114486076A (en) * | 2022-04-14 | 2022-05-13 | 西华大学 | Special test mechanism for dynamic balance of engine crankshaft of hydrogen energy hybrid commercial vehicle |
| CN118424558A (en) * | 2024-07-05 | 2024-08-02 | 济南轻骑铃木摩托车有限公司 | Motorcycle engine production detection device |
| CN118424558B (en) * | 2024-07-05 | 2024-10-01 | 济南轻骑铃木摩托车有限公司 | Motorcycle engine production detection device |
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| CN101135597B (en) | 2012-04-18 |
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Granted publication date: 20120418 Termination date: 20180929 |