CN104180992A - Measuring method for vertical type hydrostatic bearing sensitivity - Google Patents
Measuring method for vertical type hydrostatic bearing sensitivity Download PDFInfo
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- CN104180992A CN104180992A CN201410476980.2A CN201410476980A CN104180992A CN 104180992 A CN104180992 A CN 104180992A CN 201410476980 A CN201410476980 A CN 201410476980A CN 104180992 A CN104180992 A CN 104180992A
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Abstract
The invention relates to a measuring method for vertical type hydrostatic bearing sensitivity. The measuring method comprises the steps that (1) a tension wire is fixedly connected to a moment arm, to be measured, of a hydrostatic bearing; (2) a supporting base of a knife edge swing rod is fixedly installed in the horizontal direction perpendicular to the corresponding position below the moment arm to be measured; (3) the knife edge swing rod is corrected to be at 45 degrees through an angle correction block, the tension wire is adjusted to horizontally cross the upper end of the knife edge swing rod, and a weight disc is hung to the tension wire; (4) a hydrostatic bearing oil pressure device is started, weights are began to be gradually added into the weight disc, the added weights are one gram different in weight level, the weight sum of the weights and the weight disc is recorded when a hydrostatic bearing begins to wriggle, and the sensitivity is calculated according to the length of the moment arm to be measured. The measuring method is used for testing in hydrostatic bearing adjustment in key laboratories for medium and small hydroelectric equipment in country energy, the effect is quite ideal, and the sensitivity measuring result is smaller than 0.1 Nm.
Description
Technical field
The invention belongs to and analyze and survey control technology field, especially a kind of measuring method of vertical hydrostatic bearing sensitivity.
Background technology
At present, high precision moment is measured and mostly by hydrostatic bearing, is undertaken, and the sensitivity of vertical hydrostatic bearing is mostly in 0.1Nm-0.2Nm magnitude, and measuring error General Requirements is 0.01Nm-0.02Nm grammeter, the error that horizontal force is measured is crucial, and existing measuring method is difficult to meet the demands.
Through retrieval, do not find the publication technology identical with this technology.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, the measuring method of the vertical hydrostatic bearing sensitivity that a kind of design science is reasonable, simple in structure, measuring accuracy is high is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
A measuring method for vertical hydrostatic bearing sensitivity, is characterized in that: concrete steps are:
(1) pulling force silk is fixedly connected on the arm of force to be measured of hydrostatic bearing;
(2) below the arm of force to be measured, in the horizontal direction of vertical correspondence position, be installed with the support seat of edge of a knife fork;
(3) at 45 ° with angularity correction piece alignment edge of a knife fork, adjust pulling force silk and make pulling force silk level cross edge of a knife fork upper end and hang up scale pan;
(4) start hydrostatic bearing oil gear, start to add gradually counterweight in scale pan, differential one gram of counterweight, until hydrostatic bearing starts to wriggle, records closing of counterweight and scale pan weight, according to measuring arm of force length, meter sensitivity.
And, the measurement mechanism that this method is used comprises support seat, edge of a knife fork, pulling force silk, balancing weight, angle calibration system piece, weight tray, counterweight, support seat level is fixed, at supporting seat lopsidedness, be hinged with an edge of a knife fork, the horizontal direction of this edge of a knife fork upper end is the arm of force to be measured, in edge of a knife fork upper end and the affixed pulling force silk of the arm of force to be measured one end, this pulling force silk other end is sagging and mounted a scale pan, and this scale pan is for the measuring counterweight of splendid attire; The lower end of edge of a knife fork is through being fixed with a balancing weight on supporting seat and the edge of a knife fork below supporting seat, make the center of gravity of fork in knife-edge part, top, supporting seat below regulates an angle calibration system piece is installed, and this angle calibration system piece alignment edge of a knife fork is from the horizontal by 45 ° of angles.
Advantage of the present invention and good effect are:
1, to utilize edge of a knife yaw theory friction be zero principle to this method, the counterweight of vertical direction is changed into the pulling force of horizontal direction by this device, test the positive and negative both direction of vertical hydrostatic bearing and under great pulling force, start to wriggle, highly sensitive, horizontal force measuring error is less than 0.01N.
2, the present invention tests in the debugging of small-size hydroelectric equipment key lab hydrostatic bearing in national energy, and effect is ideal, and sensitivity measure result is less than 0.1Nm (10 grammeter).
Accompanying drawing explanation
Fig. 1 is instrumentation plan of the present invention.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of measuring method of vertical hydrostatic bearing sensitivity, as shown in drawings, the measurement mechanism that this measuring method is used comprises support seat 6, edge of a knife fork 5, pulling force silk 1, balancing weight 7, angle calibration system piece 4, weight tray 3, counterweight 2, support seat level is fixed, at supporting seat lopsidedness, be hinged with an edge of a knife fork, the horizontal direction of this edge of a knife fork upper end is the arm of force 8 to be measured, in edge of a knife fork upper end and the affixed pulling force silk of the arm of force to be measured one end, this pulling force silk other end is sagging and mounted a scale pan, and this scale pan is for the measuring counterweight of splendid attire;
The lower end of edge of a knife fork is through being fixed with a balancing weight on supporting seat and the edge of a knife fork below supporting seat, make the center of gravity of fork in knife-edge part, top, supporting seat below regulates an angle calibration system piece 4 is installed, and this angle calibration system piece alignment edge of a knife fork is from the horizontal by 45 ° of angles.
Concrete measuring method is:
(1) pulling force silk is fixedly connected on the arm of force to be measured of hydrostatic bearing;
(2) below the arm of force to be measured, in the horizontal direction of vertical correspondence position, be installed with the support seat of edge of a knife fork;
(3) at 45 ° with angularity correction piece alignment edge of a knife fork, adjust pulling force silk and make pulling force silk level cross edge of a knife fork upper end and hang up scale pan;
(4) start hydrostatic bearing oil gear, start to add gradually counterweight in scale pan, differential one gram of counterweight, until hydrostatic bearing starts to wriggle, records closing of counterweight and scale pan weight, according to measuring arm of force length, meter sensitivity.
Utilizing the friction of edge of a knife yaw theory is zero principle, the counterweight of vertical direction is changed into the pulling force of horizontal direction by this device, tests the positive and negative both direction of vertical hydrostatic bearing and under great pulling force, starts to wriggle, to determine its sensitivity.
Although disclose for the purpose of illustration embodiments of the invention and accompanying drawing, but it will be appreciated by those skilled in the art that: within not departing from the spirit and scope of the present invention and claims, various replacements, variation and modification are all possible, therefore, scope of the present invention is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (2)
1. a measuring method for vertical hydrostatic bearing sensitivity, is characterized in that: concrete steps are:
(1) pulling force silk is fixedly connected on the arm of force to be measured of hydrostatic bearing;
(2) below the arm of force to be measured, in the horizontal direction of vertical correspondence position, be installed with the support seat of edge of a knife fork;
(3) at 45 ° with angularity correction piece alignment edge of a knife fork, adjust pulling force silk and make pulling force silk level cross edge of a knife fork upper end and hang up scale pan;
(4) start hydrostatic bearing oil gear, start to add gradually counterweight in scale pan, differential one gram of counterweight, until hydrostatic bearing starts to wriggle, records closing of counterweight and scale pan weight, according to measuring arm of force length, meter sensitivity.
2. the measuring method of vertical hydrostatic bearing sensitivity according to claim 1, it is characterized in that: the measurement mechanism that this method is used comprises support seat, edge of a knife fork, pulling force silk, balancing weight, angle calibration system piece, weight tray, counterweight, support seat level is fixed, at supporting seat lopsidedness, be hinged with an edge of a knife fork, the horizontal direction of this edge of a knife fork upper end is the arm of force to be measured, in edge of a knife fork upper end and the affixed pulling force silk of the arm of force to be measured one end, this pulling force silk other end is sagging and mounted a scale pan, and this scale pan is for the measuring counterweight of splendid attire; The lower end of edge of a knife fork is through being fixed with a balancing weight on supporting seat and the edge of a knife fork below supporting seat, and top, supporting seat below regulates an angle calibration system piece is installed, and this angle calibration system piece alignment edge of a knife fork is from the horizontal by 45 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476980.2A CN104180992B (en) | 2014-09-18 | 2014-09-18 | A kind of measuring method of vertical hydrostatic bearing sensitivity |
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| CN201410476980.2A CN104180992B (en) | 2014-09-18 | 2014-09-18 | A kind of measuring method of vertical hydrostatic bearing sensitivity |
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| CN104180992A true CN104180992A (en) | 2014-12-03 |
| CN104180992B CN104180992B (en) | 2016-08-24 |
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Citations (10)
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| JP2006017577A (en) * | 2004-07-01 | 2006-01-19 | Koyo Seiko Co Ltd | Inspection device and its inspection method |
| CN2802484Y (en) * | 2005-05-24 | 2006-08-02 | 浙江大学 | Device for measuring microload friction of bearing |
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| CN102175369A (en) * | 2011-02-24 | 2011-09-07 | 上海大学 | Friction torque testing device for rolling bearing at low temperature |
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| CN103335760A (en) * | 2013-06-26 | 2013-10-02 | 泉州市泉永机械发展有限公司 | Carrier roller starting torque measuring device |
| CN103528741A (en) * | 2013-10-25 | 2014-01-22 | 中国科学院西安光学精密机械研究所 | Device and method for testing friction torque of bearing under actual working condition |
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2014
- 2014-09-18 CN CN201410476980.2A patent/CN104180992B/en active Active
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| JP2006017577A (en) * | 2004-07-01 | 2006-01-19 | Koyo Seiko Co Ltd | Inspection device and its inspection method |
| CN2802484Y (en) * | 2005-05-24 | 2006-08-02 | 浙江大学 | Device for measuring microload friction of bearing |
| CN201149515Y (en) * | 2008-01-11 | 2008-11-12 | 福州闽台农产品设备有限公司 | Double knife-edges balance type electron dynamic weight-measuring device |
| CN101526407A (en) * | 2009-04-01 | 2009-09-09 | 南车株洲电力机车研究所有限公司 | Test method and device of variable-paddle bearing friction moment of wind-driven generator and application thereof |
| CN101706410A (en) * | 2009-11-30 | 2010-05-12 | 中国科学院力学研究所 | Knife edge support friction test device |
| CN102175369A (en) * | 2011-02-24 | 2011-09-07 | 上海大学 | Friction torque testing device for rolling bearing at low temperature |
| CN202547835U (en) * | 2012-05-21 | 2012-11-21 | 重庆市计量质量检测研究院 | Pure torque reference device |
| CN103308220A (en) * | 2013-01-05 | 2013-09-18 | 中国航空工业集团公司西安飞机设计研究所 | Small force measuring device |
| CN103335760A (en) * | 2013-06-26 | 2013-10-02 | 泉州市泉永机械发展有限公司 | Carrier roller starting torque measuring device |
| CN103528741A (en) * | 2013-10-25 | 2014-01-22 | 中国科学院西安光学精密机械研究所 | Device and method for testing friction torque of bearing under actual working condition |
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| CN104180992B (en) | 2016-08-24 |
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