CN211602279U - Nominal force arm calibrating device - Google Patents
Nominal force arm calibrating device Download PDFInfo
- Publication number
- CN211602279U CN211602279U CN201922436933.6U CN201922436933U CN211602279U CN 211602279 U CN211602279 U CN 211602279U CN 201922436933 U CN201922436933 U CN 201922436933U CN 211602279 U CN211602279 U CN 211602279U
- Authority
- CN
- China
- Prior art keywords
- force
- standard
- measuring device
- power measuring
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a nominal arm of force calibrating device, including the bottom frock, bottom frock top one end one side is provided with application of force mechanism, the fixed standard dynamometer that is provided with in application of force mechanism top, standard dynamometer top fixed mounting has the upper portion frock, upper portion frock one side is provided with power measuring device, the inside activity of power measuring device is provided with the rotation axis, power measuring device is inside to be provided with the axle housing outside the rotation axis and to connect the frock, the one end of rotation axis is located the power measuring device outside, the one end that application of force mechanism was kept away from at bottom frock top is provided with locking device, the one end of rotation axis is located inside locking device. The utility model discloses utilize the increase value to calculate can effectively avoid because of the inaccurate influence that brings of measured sensor itself for it is more accurate to obtain the result than common method, and the power value calibration effect also possesses more accurate advantage, calibration arm length and nominal arm length that can be quick, have good practicality and generalizability.
Description
Technical Field
The utility model belongs to arm of force calibration equipment field especially relates to a nominal arm of force calibrating device.
Background
The power measurement of the hydraulic power measuring device of the engine comprehensive test bed is obtained by calculating a measured force value, an arm length and a rotating speed, and the calculation formula is as follows: at present, the force value is calibrated by a lever method or a force measuring ring method, the rotating speed is calibrated by a standard rotating speed device, and the arm length adopts a numerical value given by a manufacturer specification or a numerical value given by a manufacturer after installation and debugging are finished. The inaccuracy of the arm length causes the following problems: 1) directly influencing the power measurement: assuming that the force value is 2000N, the rotating speed is 1500r/min, the specification shows that the arm length is 600mm, the calculated power is 188.48kW, and if the actual arm length is 610mm, the actual power is 191.62kW, the error is 1.67 percent, and the requirement of the engine test specification on the test stand is exceeded, and even the requirement on the engine power is exceeded by 1.5 percent. 2) Influence value calibration results: the force measuring ring method (standard dynamometer method) is to perform calibration on the assumption that the arm lengths of two sides are equal, namely, the arm length ratio is 1, by taking the rotation center of the dynamometer as a fulcrum, and calculating a formula: the standard force value multiplied by the standard moment arm is equal to the measured force value multiplied by the nominal moment arm, because the rotation center of the dynamometer is difficult to determine, the appearance structure is complex, and the values of the standard moment arm and the nominal moment arm are difficult to measure in a geometric dimension measuring mode, the standard force value is assumed to be 1000N, the default arm length ratio is 1, the measured force value sensor is corrected to be 1000N through a technical means, if the actual standard moment arm is 600mm, and the nominal moment arm is 610mm, the measured force value is actually 983.61N, namely the measured force value sensor is artificially corrected to be 1.67% larger. By combining the influences of the two problems, the inaccurate arm length in the force value calibration or the power measurement can have a great influence on the power measurement result. How to rapidly calibrate the standard arm length and the nominal arm length on site is a technical difficulty of the project.
SUMMERY OF THE UTILITY MODEL
The utility model provides a, aim at solving the problem of the direct influence power measurement result and the influence value calibration result of above-mentioned existence.
The utility model is realized in such a way that the calibrating device of the nominal force arm comprises a bottom tool, one side of one end of the top of the bottom tool is provided with a force applying mechanism, a standard dynamometer is fixedly arranged at the top end of the force application mechanism, an upper tool is fixedly arranged at the top end of the standard dynamometer, one side of the upper tool is provided with a power measuring device, a rotating shaft is movably arranged in the power measuring device, a shaft shell connecting tool is arranged outside the rotating shaft in the dynamometer, one end of the rotating shaft is positioned outside the dynamometer, one end of the top of the bottom tool far away from the force application mechanism is provided with a locking device, one end of the rotating shaft is positioned in the locking device, and a standard torque meter is arranged on the outer side of the rotating shaft between the power measuring device and the locking device, and a measured tension pressure sensor is arranged between one end of one side of the outer part of the bottom tool and the power measuring device.
Preferably, the force application mechanism is movably connected with the bottom tool.
Preferably, one end of the rotating shaft is connected with the locking device through a connecting hole.
Preferably, the standard dynamometer is model number YL-325.
Preferably, the standard torque meter is a SGJN.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses utilize the increase value to calculate can effectively avoid because of the inaccurate influence that brings of measured sensor itself for it is more accurate to obtain the result than common method, and the power value calibration effect also possesses more accurate advantage, calibration arm length and nominal arm length that can be quick, have good practicality and generalizability.
Drawings
Fig. 1 is a schematic video of a nominal moment arm calibration device according to the present invention;
fig. 2 is a schematic side view of the calibration device for nominal force arm of the present invention.
In the figure: 1. bottom tooling; 2. a force application mechanism; 3. a standard dynamometer; 4. an upper part tool; 5. a dynamometer device; 6. a rotating shaft; 7. the shaft shell is connected with a tool; 8. a locking device; 9. a standard torque meter; 10. and a measured pull pressure sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-2, a nominal force arm calibration device includes a bottom tool 1, a force application mechanism 2 is arranged on one side of one end of the top of the bottom tool 1, a standard force measuring instrument 3 is fixedly arranged on the top end of the force application mechanism 2, an upper tool 4 is fixedly arranged on the top end of the standard force measuring instrument 3, a power measuring device 5 is arranged on one side of the upper tool 4, a rotating shaft 6 is movably arranged inside the power measuring device 5, a shaft housing connecting tool 7 is arranged outside the rotating shaft 6 inside the power measuring device 5, one end of the rotating shaft 6 is located outside the power measuring device 5, a locking device 8 is arranged at one end, far away from the force application mechanism 2, of the top of the bottom tool 1, one end of the rotating shaft 6 is located inside the locking device 8, a standard torque meter 9 is arranged outside the rotating shaft 6 between the power measuring device 5 and the locking device 8, and a measured tension pressure sensor.
The utility model discloses in forcing mechanism 2 and 1 swing joint of bottom frock, forcing mechanism 2 with 1 swing joint of bottom frock can carry out normal rotation and use.
The utility model discloses in the connecting hole is passed through to the one end of rotation axis 6 and is connected with locking device 8, can guarantee the effect that provides for rotation axis 6 to locking device 8 through being connected of connecting hole.
The model of the standard dynamometer 3 in the utility model is YL-325.
The utility model discloses in standard torque meter 9's model is SGJN.
The utility model discloses a theory of operation is: the special shaft housing connecting tool 7 for design and manufacture connects a rotating shaft 6 of the dynamometer 5 and a housing into a whole, the standard dynamometer 3 and the standard torquer 9 are installed during calibration, the locking device 8 is locked, the standard dynamometer 3 is enabled to reach an initial value by rotating the force application mechanism 2, if 100N is adopted, the reading of the standard dynamometer 9 and the reading of the measured force transducer are respectively recorded, then the force application mechanism 2 is rotated again, the standard dynamometer 3 is enabled to be increased to 200N, the reading of the standard dynamometer 9 and the reading of the measured force transducer are recorded, and the force arm is calculated through the difference value: the standard moment arm is the added value of the standard torque meter 9/the added value of the standard force measuring meter 3, and the nominal moment arm is the added value of the standard torque meter 9/the added value of the measured force sensor. And rotating the force application mechanism 2 again to increase the standard force measuring instrument 3 to 300N and 400N respectively, calculating force arm values respectively, and taking the average value for three times as the standard force arm value and the nominal force arm value. The influence caused by the inaccuracy of the sensor to be tested can be effectively avoided by utilizing the added value calculation. And finally, rotating the force application mechanism 2 to zero, removing the standard torque meter 9 and the shaft housing connecting tool 7, and calibrating the force sensor to be measured point by taking the standard force meter 3 as a standard according to the measurement results of the standard force arm and the nominal force arm.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a nominal arm of force calibrating device, includes bottom frock (1), its characterized in that: the device is characterized in that a force application mechanism (2) is arranged on one side of the top end of a bottom tool (1), a standard dynamometer (3) is fixedly arranged on the top end of the force application mechanism (2), an upper tool (4) is fixedly arranged on the top end of the standard dynamometer (3), a power measuring device (5) is arranged on one side of the upper tool (4), a rotating shaft (6) is movably arranged in the power measuring device (5), a shaft shell connecting tool (7) is arranged outside the rotating shaft (6) in the power measuring device (5), one end of the rotating shaft (6) is located outside the power measuring device (5), a locking device (8) is arranged at one end, away from the force application mechanism (2), of the top of the bottom tool (1), of the rotating shaft (6), one end of the rotating shaft (8) is located inside the locking device (8), and a standard torque meter (9) is arranged outside the rotating shaft, and a measured tension pressure sensor (10) is arranged between one end of the outer side of the bottom tool (1) and the dynamometer (5).
2. A nominal moment arm calibration device according to claim 1, wherein: and the force application mechanism (2) is movably connected with the bottom tool (1).
3. A nominal moment arm calibration device according to claim 1, wherein: one end of the rotating shaft (6) is connected with the locking device (8) through a connecting hole.
4. A nominal moment arm calibration device according to claim 1, wherein: the model of the standard dynamometer (3) is YL-325.
5. A nominal moment arm calibration device according to claim 1, wherein: the model of the standard torque meter (9) is SGJN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436933.6U CN211602279U (en) | 2019-12-30 | 2019-12-30 | Nominal force arm calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436933.6U CN211602279U (en) | 2019-12-30 | 2019-12-30 | Nominal force arm calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211602279U true CN211602279U (en) | 2020-09-29 |
Family
ID=72597737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922436933.6U Active CN211602279U (en) | 2019-12-30 | 2019-12-30 | Nominal force arm calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211602279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405984A (en) * | 2021-06-26 | 2021-09-17 | 南京熙赢测控技术有限公司 | Calibration system and method for longitudinal force friction coefficient tester |
-
2019
- 2019-12-30 CN CN201922436933.6U patent/CN211602279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405984A (en) * | 2021-06-26 | 2021-09-17 | 南京熙赢测控技术有限公司 | Calibration system and method for longitudinal force friction coefficient tester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2847213Y (en) | Internal and external structure relative position size measuring device for rack piston | |
| WO2017193713A1 (en) | Device for automatic measurement and adjustment of inertia of marine structure test model along multiple axes, and method for using same | |
| CN211602279U (en) | Nominal force arm calibrating device | |
| CN110763110B (en) | Three-jaw internal diameter ruler automatic calibration device | |
| CN106840517B (en) | Output torque calibrator for speed reducer detector | |
| CN101726228A (en) | Tool for checking M value of internal spline | |
| CN215639594U (en) | High-precision three-axis temperature vibration composite sensor | |
| CN214893185U (en) | Trompil detection device is used in processing of new energy automobile accessories | |
| CN112525072B (en) | Detection device for aircraft fork ear hole position involution and center point calibration method thereof | |
| CN209992103U (en) | Pipeline fluid impact detection device | |
| CN210710213U (en) | Device for detecting inclination angle of elevator car based on six-axis acceleration sensor | |
| CN110125980B (en) | Calibration device and calibration method for industrial robot repeated positioning precision measurement device | |
| CN218724908U (en) | Measuring gauge for angle of torque sensor | |
| CN113137943A (en) | Displacement sensor calibration device and measurement method thereof | |
| CN113776475A (en) | Measuring equipment and method for measuring size of shell | |
| CN217304378U (en) | Automobile comprehensive rotary drum test bed power testing mechanism | |
| CN111397491A (en) | Eccentric shaft detection tool | |
| CN217005623U (en) | Gear shaft height detection tool | |
| CN216308858U (en) | Cross-rod distance measuring instrument for involute spline | |
| CN219348053U (en) | Connecting piece for calibrating torque parameters of steering wheel moment running-in test bed | |
| CN211824230U (en) | Eccentric shaft detection tool | |
| CN215413522U (en) | External spline tooth thickness measuring instrument | |
| CN113758618B (en) | Digital torque measuring device and method based on double-channel signal correction | |
| CN216132597U (en) | Install surface strain gauge that externally measures atress change at structure | |
| CN114636559B (en) | Radial thrust collection mechanism, thrust vector measurement device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |