CN115839789A - Device for rapidly and accurately measuring crank bending moment strain coefficient - Google Patents
Device for rapidly and accurately measuring crank bending moment strain coefficient Download PDFInfo
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- CN115839789A CN115839789A CN202211321863.XA CN202211321863A CN115839789A CN 115839789 A CN115839789 A CN 115839789A CN 202211321863 A CN202211321863 A CN 202211321863A CN 115839789 A CN115839789 A CN 115839789A
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- 238000005452 bending Methods 0.000 title claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention provides a device for quickly and accurately measuring the bending moment and strain coefficient of a crank throw, which comprises a gantry crane, a crankshaft clamp, a strain gauge, a strain amplifier, a tension and compression sensor and a torque loader, wherein the gantry crane is arranged on a horizontal platform, the crankshaft clamp is arranged in the gantry crane and used for clamping and fixing an engine crank throw, the strain gauge and the strain amplifier are arranged at the top of the engine crank throw, the torque loader is connected with the crankshaft clamp through a connecting rod and used for applying tension or thrust to the crankshaft clamp, and the tension and compression sensor is arranged on the connecting rod and used for acquiring the torque applied to the crankshaft clamp by the torque loader. According to the invention, the automatic loading torque device is designed autonomously, the tension and compression sensor feeds back the torque to the loader device, and the loading device automatically adjusts the loading torque according to the value of the sensor, so that the deformation coefficient of the part is accurately acquired, and the accuracy of the dynamic calibration test is ensured.
Description
Technical Field
The invention relates to the technical field of measurement of a crank bending moment strain coefficient of an engine, in particular to a device for quickly and accurately measuring the crank bending moment strain coefficient.
Background
The crankshaft test bed is generally applied to the bending fatigue test of the engine crankshaft, before the crankshaft test starts, the crank loading torque of different models is required, so that a reference value for dynamic calibration of the test is obtained, most of the existing crank bending moment strain system measuring devices adjust the torque in a manual mode, however, the problem is that the manual adjusting mode cannot accurately load the torque on the crank, meanwhile, the test sample is easily damaged, the error of the calibrated value is large, the problem that the strain coefficient of the crankshaft is inaccurate is solved, the efficiency is low, and the accuracy is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device for quickly and accurately measuring the strain coefficient of the bending moment of the crank throw.
In order to achieve the purpose, the invention provides a device for quickly and accurately measuring the bending moment and the strain coefficient of a crank throw, which comprises a gantry crane, a crankshaft clamp, a strain gauge, a strain amplifier, a tension-compression sensor and a torque loader, wherein the gantry crane is arranged on a horizontal platform, the crankshaft clamp is arranged in the gantry crane and used for clamping and fixing an engine crank throw, the strain gauge and the strain amplifier are arranged at the top of the engine crank throw and used for acquiring the deformation of the engine crank throw when the engine crank throw is under tension or pressure, the torque loader is connected with the crankshaft clamp through a connecting rod and used for applying tension or thrust to the crankshaft clamp, and the tension-compression sensor is arranged on the connecting rod and used for acquiring the torque applied to the crankshaft clamp by the torque loader.
The device further comprises a control system, wherein the control system is respectively in data connection with the tension and compression sensor and the torque sensor, and is used for receiving the torque applied to the crankshaft fixture by the torque loader acquired by the tension and compression sensor and sending a corresponding control instruction to the torque loader according to the target torque set by an experimenter.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the automatic loading torque device is designed autonomously, the tension and compression sensor feeds back the torque to the loader device, and the loading device automatically adjusts the loading torque according to the value of the sensor, so that the deformation coefficient of the part is accurately acquired, and the accuracy of the dynamic calibration test is ensured.
Drawings
FIG. 1 is a schematic diagram of a device for rapidly and accurately measuring the strain coefficient of a crank bending moment according to the present invention.
In the figure, 1, a gantry crane; 2. a crankshaft clamp; 3. a strain gauge and a strain amplifier; 4. an engine crank; 5. a tension and compression sensor; 6. a moment loader; 7. a control system; 8. a connecting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1, the invention provides a device for rapidly and accurately measuring a crank bending moment strain coefficient, which comprises a gantry crane 1, a crankshaft clamp 2, a strain gauge and strain amplifier 3, a tension and compression sensor 5 and a torque loader 6, wherein the gantry crane 1 is installed on a horizontal platform, the crankshaft clamp 2 is installed in the gantry crane 1, the crankshaft clamp 2 is used for clamping and fixing an engine crank 4, the strain gauge and strain amplifier 3 are arranged at the top of the engine crank 4 and are used for acquiring the deformation of the engine crank 4 under tension or pressure, the torque loader 6 is connected with the crankshaft clamp 2 through a connecting rod 8 and is used for applying tension or thrust to the crankshaft clamp 2, and the tension and compression sensor 5 is installed on the connecting rod 8 and is used for acquiring the torque applied to the crankshaft clamp 2 by the torque loader 6.
Further, the device also comprises a control system 7, wherein the control system 7 is respectively in data connection with the tension and compression sensor 5 and the torque sensor 6, and is used for receiving the torque applied to the crankshaft fixture 2 by the torque loader 6 acquired from the tension and compression sensor 5 and sending a corresponding control instruction to the torque loader 6 according to a target torque set by an experimenter.
The working principle is as follows: when the bending strain coefficient of the crank throw of the engine is accurately measured, firstly, a crank throw clamp 2 and a gantry crane 1 are installed, a target loading torque value of the crank throw 4 of the engine is set, a torque loader 5 is started, and an electric push rod of the torque loader starts loading thrust, so that the crankshaft clamp 2 deforms; at the moment, the tension and compression sensor 5 obtains a loaded moment, the moment value is input to the control system 7, the control system 7 further feeds back the moment to the moment loader 5 to load a thrust or a tension to ensure that the thrust value is close to a bending pressure value, after the loaded moment is stable, deformation quantities obtained by the strain gauge and the strain amplifier are recorded, and the strain coefficient of the crank of the engine is obtained through calculation. When dynamic calibration is carried out, deformation data acquired during static calibration can be used as a reference value of dynamic calibration.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (2)
1. The utility model provides a device of quick accurate measurement crank throw moment of flexure coefficient of strain which characterized in that, includes portal crane, bent axle anchor clamps, foil gage and strain amplifier, draws and presses sensor and moment loader, the portal crane is installed on horizontal platform, installs bent axle anchor clamps in the portal crane, bent axle anchor clamps are used for the fixed engine crank throw of centre gripping, foil gage and strain amplifier arrange at engine crank throw top for obtain the deformation of engine crank throw when receiving pulling force or pressure, the moment loader passes through the connecting rod and is connected with bent axle anchor clamps, is used for exerting pulling force or thrust to bent axle anchor clamps, install on the connecting rod and draw and press the sensor, be used for obtaining the moment that the moment loader applied force to bent axle anchor clamps.
2. The device for rapidly and accurately measuring the strain coefficient of the crank bending moment according to claim 1, further comprising a control system, wherein the control system is respectively in data connection with the tension and compression sensor and the torque sensor, and is used for receiving the torque applied to the crankshaft fixture by the torque loader acquired from the tension and compression sensor and sending a corresponding control instruction to the torque loader according to a target torque set by an experimenter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211321863.XA CN115839789A (en) | 2022-10-27 | 2022-10-27 | Device for rapidly and accurately measuring crank bending moment strain coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211321863.XA CN115839789A (en) | 2022-10-27 | 2022-10-27 | Device for rapidly and accurately measuring crank bending moment strain coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115839789A true CN115839789A (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211321863.XA Pending CN115839789A (en) | 2022-10-27 | 2022-10-27 | Device for rapidly and accurately measuring crank bending moment strain coefficient |
Country Status (1)
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| CN (1) | CN115839789A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201575899U (en) * | 2009-12-24 | 2010-09-08 | 洛阳西苑车辆与动力检验所有限公司 | Resonance type crankshaft bending fatigue tester based on strain control principle |
| CN103543641A (en) * | 2013-09-30 | 2014-01-29 | 中国人民解放军国防科学技术大学 | Steering engine hinge torque real-time dynamic loading device |
| EP3067681A1 (en) * | 2015-03-10 | 2016-09-14 | IPG Automotive GmbH | Method for operating an engine or power train test stand |
| CN106500975A (en) * | 2016-10-20 | 2017-03-15 | 中国汽车工程研究院股份有限公司 | A kind of parts strain and load calibration test device |
| CN210136077U (en) * | 2019-07-18 | 2020-03-10 | 潍柴动力股份有限公司 | Connecting rod tension and compression load loading device |
| CN112284660A (en) * | 2020-09-28 | 2021-01-29 | 浙江大学 | Bent torsion composite load test device of bent axle |
-
2022
- 2022-10-27 CN CN202211321863.XA patent/CN115839789A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201575899U (en) * | 2009-12-24 | 2010-09-08 | 洛阳西苑车辆与动力检验所有限公司 | Resonance type crankshaft bending fatigue tester based on strain control principle |
| CN103543641A (en) * | 2013-09-30 | 2014-01-29 | 中国人民解放军国防科学技术大学 | Steering engine hinge torque real-time dynamic loading device |
| EP3067681A1 (en) * | 2015-03-10 | 2016-09-14 | IPG Automotive GmbH | Method for operating an engine or power train test stand |
| CN106500975A (en) * | 2016-10-20 | 2017-03-15 | 中国汽车工程研究院股份有限公司 | A kind of parts strain and load calibration test device |
| CN210136077U (en) * | 2019-07-18 | 2020-03-10 | 潍柴动力股份有限公司 | Connecting rod tension and compression load loading device |
| CN112284660A (en) * | 2020-09-28 | 2021-01-29 | 浙江大学 | Bent torsion composite load test device of bent axle |
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