CN104089771A - Transmission efficiency testing method of micro car transmission shaft - Google Patents
Transmission efficiency testing method of micro car transmission shaft Download PDFInfo
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- CN104089771A CN104089771A CN201410319697.9A CN201410319697A CN104089771A CN 104089771 A CN104089771 A CN 104089771A CN 201410319697 A CN201410319697 A CN 201410319697A CN 104089771 A CN104089771 A CN 104089771A
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Abstract
The invention provides a transmission efficiency testing method of a micro car transmission shaft. Torque data, measured by a strain gage (1), of the transmission shaft are transmitted to the wireless receiving end of a computer through a wireless torque node (2); meanwhile, a Hall sensing element inside the wireless torque node (2) is matched with a magnet (3) installed on an car chassis to measure the torque of the micro car transmission shaft; rotating speed data are also transmitted to the wireless receiving end of the computer, and the transmission efficiency of the micro car transmission shaft during operation under actual working conditions is obtained after the measurement data are processed by the computer; the strain gage (1) and the wireless torque node (2) are both pasted to the micro car transmission shaft. By means of the transmission efficiency testing method, according to the actual working conditions of a whole car, the transmission efficiency of the micro car transmission shaft can be conveniently measured, and the transmission efficiency testing method has the advantages of being high in using performance, convenient to operate, good in reliability and the like.
Description
Technical field
The present invention relates to vehicle transmission field, particularly relate to the method for testing of truck drive shaft transmission efficiency.
Background technology
Along with scientific and technological development, automobile positive high economy and high-level efficiency future development, and vehicle transmission efficiency more and more receives people's concern.In micro-car kinematic train, transmission shaft is as its critical component, its major function is the power transmitting from engine, and give back axle transmission of power, power is in the process process of transmission shaft, existence due to universal joint etc., inevitably has the loss of energy, and it is one of effective ways that improve micro-car energy consumption and performance that the transmission efficiency that therefore improves kinematic train is carried out rate.The method of testing of the transmission efficiency thereupon producing also has a lot, and when the transmission efficiency of test transmission shaft, conventionally transmission shaft will be disassembled on special-purpose test board and tests in the past.Such test mode tends to consume a large amount of manpowers and time, and test result not necessarily can reflect the transmission efficiency under actual condition truly.After can reflecting that really car load has assembled, under actual condition, the transmission efficiency of micro-car transmission shaft, is necessary to provide a kind of in the situation that micro-car transmission shaft not being dismantled or transformed, and tests the method for transmission shaft driven efficiency by test torque transmission shaft and rotating speed.
Summary of the invention
Technical matters solved by the invention is: the method for testing that a kind of micro-car transmission shaft driven efficiency is provided, the method can, in the situation that micro-car transmission shaft not being dismantled or transformed, realize the test to micro-car transmission shaft driven efficiency by test torque transmission shaft and rotating speed.
The present invention solves its technical matters and adopts following technical scheme:
Micro-car transmission shaft driven efficiency test method provided by the invention is: the moment of torsion data of by data acquisition unit, foil gauge being measured to transmission shaft send to the wireless interface receiving end of computing machine through wireless moment of torsion node, wireless moment of torsion node of while is by its inner hall sensing element and be contained in the moment of torsion of the micro-car transmission shaft of magnet conjunction measuring on automobile chassis and the wireless interface receiving end that rotary speed data also sends to computing machine, after these measurement data are processed by computing machine, obtain the transmission efficiency of micro-car transmission shaft while moving under actual condition; Described foil gauge and wireless moment of torsion node all stick on micro-car transmission shaft.
The present invention can adopt following methods by strain gauge adhesion on transmission shaft, the steps include:
(1) pre-service:
Surface paint, greasy dirt, rusty stain and the electrodeposited coating pasted on the transmission shaft of foil gauge are removed, then with clean cotton yarn or rayon balls, dipped in acetone or other volatile solvent is cleaned repeatedly to paster position, until can not see dirt on cotton balls;
(2) paste foil gauge:
After to be cleaned dose of volatilization, pinch the lead-in wire of foil gauge with left hand, the right hand is evenly coated with last layer bonding agent on the back side of foil gauge; When glue is clamminess, orientation sticks on transmission shaft foil gauge vertically, then on foil gauge, pads layer of polyethylene or tetrafluoroethene film, with finger, squeezes out gently unnecessary glue and bubble, after glue primary solidification, unclamps.
The present invention can adopt following methods to provide the battery of power supply to stick on transmission shaft, specifically by wireless moment of torsion node with to this wireless moment of torsion node:
After foil gauge posts, in its position, side, stick double faced adhesive tape, wireless moment of torsion node is sticked on double faced adhesive tape, next sticking an other double faced adhesive tape with the axisymmetric position of wireless moment of torsion node, battery is fixed on this position, then with adhesive tape, wireless moment of torsion node and battery is fixed on transmission shaft, adhesive tape needs multi-turn to be fastened, while guaranteeing transmission shaft rotation, battery and wireless moment of torsion node can not throw away because of centrifugal force.
Described adhesive tape can adopt 3M cord belt.
After foil gauge is posted, can be by four extension lines of foil gauge according to red, blue, blue, red being linked in sequence on the binding post of wireless moment of torsion node, then on this binding post, by connecting line, provide the battery of power supply to be connected with giving wireless moment of torsion node, battery snap is arranged on battery, finally check that whether the red light on wireless moment of torsion node is bright, otherwise check that whether battery connecting line is correct.
Battery snap is arranged on battery, makes stable connection of both positive and negative polarity of connecting line on the binding post of wireless moment of torsion node and battery.
The present invention compared with prior art has following major advantage:
1. simple to operate:
After car load has assembled, under actual condition, transmission shaft is not dismantled or transformed, directly carry out the test to micro-car transmission shaft driven efficiency, thereby overcome in the past, when the transmission efficiency of test transmission shaft, conventionally transmission shaft will be disassembled to the disadvantage of testing on special-purpose test board.
2. can greatly improve detection efficiency:
Owing to transmission shaft not being dismantled or being transformed, directly test moment of torsion and the rotating speed of micro-car transmission shaft, calculate the input-output power of transmission shaft, obtain transmission efficiency curve, analyze micro-car in the transmission efficiency situation of different rotating speeds lower drive shaft, obtain the transmission performance of micro-car kinematic train, therefore can save manpower and time, and test result can reflect the transmission efficiency of micro-car under actual condition truly.
3. practical, be conducive to Reducing Cost in Enterprises:
Due to simple to operate and can greatly improve detection efficiency, therefore practical, be conducive to Reducing Cost in Enterprises.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the present invention's gained speed diagram while using.
Fig. 3 is the present invention's gained power diagram while using.
In figure: 1. foil gauge; 2. wireless moment of torsion node; 3. magnet; 4. adhesive tape; 5. battery; 6. battery snap; 7. magnet mount pad.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but be not limited to described content below.
The method of testing of micro-car transmission shaft driven efficiency provided by the invention, in the situation that micro-car transmission shaft not being dismantled or transformed, in the upper appropriate location of micro-car transmission shaft (can be called for short transmission shaft below), paste foil gauge 1, wireless moment of torsion node 2 and battery 5, magnet mount pad is adsorbed on to automobile chassis relevant position, by pasting the mode of foil gauge, measures moment of torsion; By the hall sensing element conjunction measuring rotating speed in magnet and wireless moment of torsion node, adopt wireless transmit and accept the wireless transmission that module completes torque transmission shaft signal, adopt wireless telemetry technique to obtain moment of torsion and the rotating speed of transmission shaft, wireless moment of torsion node sends the data to the wireless interface receiving end of computing machine, by computing machine, data are stored and computational analysis, thereby obtain the transmission efficiency of micro-car transmission shaft.
Said method provided by the invention, is the test of car load transmission shaft driven efficiency while moving under actual condition, and referring to Fig. 1, the step of the method is:
1. pre-service:
With instruments such as file and flint glass papers, the surface paint, greasy dirt, rusty stain and the electrodeposited coating that paste foil gauge position are removed, polishing area is about 5 times of left and right of foil gauge area, after polishing, with clean cotton yarn or rayon balls, dip in acetone or other volatile solvent is cleaned repeatedly to paster position, until can not see dirt on cotton balls.
2. paste foil gauge:
After to be cleaned dose of volatilization, pinch the lead-in wire of foil gauge 1 with left hand, the right hand is coated with last layer bonding agent (for example 502 glue) at the upper even unfertile land in the back side of foil gauge 1 (having the one side that extension line is drawn is front).Wait for a period of time a little, when glue is clamminess, orientation (foil gauge 1 is pasted vertically), on foil gauge 1, pad again layer of polyethylene or tetrafluoroethene film (for example cigarette case wrapping film), with finger, squeeze out gently unnecessary glue and bubble, after glue primary solidification, can unclamp.The foil gauge pasting should guarantee that position is accurate, bonding firmly, glue-line evenly, without bubble and neatly clean.
3. paste wireless moment of torsion node 2 and battery 5:
After foil gauge 1 posts, in its position, side, stick appropriate thick double faced adhesive tape, wireless moment of torsion node 2 is sticked on double faced adhesive tape, next sticking appropriate thick double faced adhesive tape with the axisymmetric position of wireless moment of torsion node, battery 5 is fixed on this position, with adhesive tape 4, wireless moment of torsion node 2 and battery 5 is fixed on transmission shaft, adhesive tape needs multi-turn to be fastened, while guaranteeing transmission shaft rotation, battery 5 and wireless moment of torsion node 2 can not throw away because of centrifugal force.
Then by four extension lines of foil gauge 1 according to red, blue, blue, red being linked in sequence on the binding post of wireless moment of torsion node 2, finally the battery connecting line on node is connected on the corresponding binding post of node, battery snap 6 is arranged on battery, check that on node, whether red light is bright, otherwise check that whether battery connecting line is correct.
Described adhesive tape 4 can adopt 3M cord belt.
Described battery 5 can adopt 9V battery.
By four extension lines of foil gauge 1 according to red, blue, blue, red being linked in sequence on wireless moment of torsion node 2 binding posts, the battery connecting line on wireless moment of torsion node 2 is connected on the corresponding binding post of node, then battery snap 6 is arranged on battery.This battery snap can be stablized the connecting line of the battery on wireless moment of torsion node to be connected with the both positive and negative polarity of battery 5.
5. check:
Check that on node, whether red light is bright, otherwise check that whether battery connecting line is correct.
When pick-up unit is arranged on leading portion transmission shaft, transmission shaft input end speed pickup magnet holder is adsorbed on to automobile chassis relevant position (back segment transmission shaft detects and uses transmission shaft input end speed pickup magnet holder), this support is for installing the mount pad of magnet 3, make wireless moment of torsion node 2 end faces substantially concordant with magnet 3 end faces, adjust the bolt position on mount pad, make distance between magnet 3 and wireless moment of torsion node 2 at 5mm, check that whether the green light on wireless moment of torsion node 2 is bright, otherwise adjust the position of magnet 3.
6. test:
Open computing machine, the USB cable of connection data collector, enters following test process:
First in file management menu, set up new test, then carry out the setting of correlation parameter, the various sizes parameter of especially detected transmission shaft, wherein data acquisition parameter arranges, parameter calibration, zero compensation and operating parameter setting, if do not have special requirement without change parameters; Select storing path; Be noted that data acquisition equipment is USB device, after insertion computing machine, can carry out work by the virtual serial ports of driver, if there are a plurality of serial ports in computing machine, the PORT COM of necessary specific radio data acquisition equipment.
While testing, the signal recording can clearly show in man-machine interface.
In test way, can see clearly torque signals, tach signal and the power signal of transmission shaft under actual condition, its test result as shown in Figure 2 and Figure 3.By Fig. 2 and Fig. 3, can be clearly seen that transmission shaft is at power, rotating speed and other some signals in the same time not.
Claims (6)
1. a micro-car transmission shaft driven efficiency test method, it is characterized in that the moment of torsion data of foil gauge (1) being measured to transmission shaft by data acquisition unit send to the wireless interface receiving end of computing machine through wireless moment of torsion node (2), wireless moment of torsion node of while (2) is by its inner hall sensing element and be contained in the moment of torsion of the micro-car transmission shaft of magnet (3) conjunction measuring on automobile chassis and the wireless interface receiving end that rotary speed data also sends to computing machine, after these measurement data are processed by computing machine, obtain the transmission efficiency of micro-car transmission shaft while moving under actual condition; Described foil gauge and wireless moment of torsion node all stick on micro-car transmission shaft.
2. micro-car transmission shaft driven efficiency test method according to claim 1, is characterized in that foil gauge (1) to adopt following methods to stick on transmission shaft:
(1) pre-service:
Surface paint, greasy dirt, rusty stain and the electrodeposited coating pasted on the transmission shaft of foil gauge are removed, then with clean cotton yarn or rayon balls, dipped in acetone or other volatile solvent is cleaned repeatedly to paster position, until can not see dirt on cotton balls;
(2) paste foil gauge:
After to be cleaned dose of volatilization, pinch the lead-in wire of foil gauge with left hand, the right hand is evenly coated with last layer bonding agent on the back side of foil gauge; When glue is clamminess, orientation sticks on transmission shaft foil gauge vertically, then on foil gauge, pads layer of polyethylene or tetrafluoroethene film, with finger, squeezes out gently unnecessary glue and bubble, after glue primary solidification, unclamps.
3. micro-car transmission shaft driven efficiency test method according to claim 1, is characterized in that adopting following methods to provide the battery (5) of power supply to stick on transmission shaft by wireless moment of torsion node (2) with to this wireless moment of torsion node:
After foil gauge (1) posts, in its position, side, stick double faced adhesive tape, wireless moment of torsion node (2) is sticked on double faced adhesive tape, next sticking an other double faced adhesive tape with the axisymmetric position of wireless moment of torsion node (2), battery (5) is fixed on this position, then use adhesive tape (4) that wireless moment of torsion node (2) and battery (5) are fixed on transmission shaft, adhesive tape needs multi-turn to be fastened, while guaranteeing transmission shaft rotation, battery (5) and wireless moment of torsion node (2) can not throw away because of centrifugal force.
4. micro-car transmission shaft driven efficiency test method according to claim 3, is characterized in that adhesive tape (4) adopts 3M cord belt.
5. micro-car transmission shaft driven efficiency test method according to claim 1, after it is characterized in that foil gauge (1) posts, by four extension lines of foil gauge (1) according to red, blue, blue, red being linked in sequence on the binding post of wireless moment of torsion node (2), then on this binding post, by connecting line, provide the battery (5) of power supply to be connected with giving wireless moment of torsion node (2), battery snap (6) is arranged on battery, finally check that whether the red light on wireless moment of torsion node (2) is bright, otherwise check that whether battery connecting line is correct.
6. micro-car transmission shaft driven efficiency test method according to claim 5, it is characterized in that battery snap (6) is arranged on to battery (5) upper, make the connecting line on the binding post of wireless moment of torsion node (2) stablize and be connected with the both positive and negative polarity of battery (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410319697.9A CN104089771A (en) | 2014-07-07 | 2014-07-07 | Transmission efficiency testing method of micro car transmission shaft |
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| CN201410319697.9A CN104089771A (en) | 2014-07-07 | 2014-07-07 | Transmission efficiency testing method of micro car transmission shaft |
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| CN201410319697.9A Pending CN104089771A (en) | 2014-07-07 | 2014-07-07 | Transmission efficiency testing method of micro car transmission shaft |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716762A (en) * | 2016-03-25 | 2016-06-29 | 哈尔滨飞机工业集团有限责任公司 | Helicopter tail transmission shaft torque testing system |
| CN110057481A (en) * | 2019-05-28 | 2019-07-26 | 武汉理工大学 | Measuring device is transmitted based on fiber grating and two between centers torques of strain-ga(u)ge technique |
| CN110285902A (en) * | 2019-07-30 | 2019-09-27 | 安徽江淮汽车集团股份有限公司 | Rear axle Efficiency test method, user equipment, storage medium and device |
| CN111044189A (en) * | 2019-12-24 | 2020-04-21 | 中国第一汽车股份有限公司 | Testing device and testing method for transmission efficiency of plug-in hybrid power transmission |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716762A (en) * | 2016-03-25 | 2016-06-29 | 哈尔滨飞机工业集团有限责任公司 | Helicopter tail transmission shaft torque testing system |
| CN110057481A (en) * | 2019-05-28 | 2019-07-26 | 武汉理工大学 | Measuring device is transmitted based on fiber grating and two between centers torques of strain-ga(u)ge technique |
| CN110057481B (en) * | 2019-05-28 | 2020-09-29 | 武汉理工大学 | Torque transmission measuring device between two shafts based on fiber bragg grating and strain gauge technology |
| CN110285902A (en) * | 2019-07-30 | 2019-09-27 | 安徽江淮汽车集团股份有限公司 | Rear axle Efficiency test method, user equipment, storage medium and device |
| CN111044189A (en) * | 2019-12-24 | 2020-04-21 | 中国第一汽车股份有限公司 | Testing device and testing method for transmission efficiency of plug-in hybrid power transmission |
| CN111044189B (en) * | 2019-12-24 | 2021-10-22 | 中国第一汽车股份有限公司 | Testing device and testing method for transmission efficiency of plug-in hybrid power transmission |
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Application publication date: 20141008 |