CN102944346A - Novel dynamometer - Google Patents
Novel dynamometer Download PDFInfo
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- CN102944346A CN102944346A CN2012104282258A CN201210428225A CN102944346A CN 102944346 A CN102944346 A CN 102944346A CN 2012104282258 A CN2012104282258 A CN 2012104282258A CN 201210428225 A CN201210428225 A CN 201210428225A CN 102944346 A CN102944346 A CN 102944346A
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- transmission shaft
- potential plate
- magneto
- flow liquid
- magnetic flow
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Abstract
The invention provides a novel dynamometer, which is characterized in that the novel dynamometer comprises a magneto-rheological liquid tank (1), wherein the magneto-rheological liquid tank (1)is filled with magneto-rheological liquid; two parallel electric potential plates (2 and 3) are further arranged at the inner part of the magneto-rheological liquid tank (1) and respectively connected to the two poles of a variable direct-current (DC) power source (4); an ammeter (5) is mounted on a circuit where the two parallel electric potential plates (2 and 3) are connected to the DC power source; one of the two parallel electric potential plates (2 and 3) is further fixedly connected with a transmission shaft (201); the center of the transmission shaft (201) is perpendicular to the electric potential plate (2); a cooling device (6) is connected outside the magneto-rheological liquid tank (1); and a rotating speed sensor (201a) is mounted on the transmission shaft (201). The novel dynamometer provided by the invention can not only measure large-range output power of mechanical equipment, but also measure the power of the mechanical equipment in working conditions of abrupt acceleration and variable acceleration; and the whole machine has a simple structure, achieves high measuring accuracy, has a wide measuring range and is comparatively simple to operate.
Description
Technical field
The invention belongs to mechanical equipment technical field, specifically just relate to a kind of dynamometer machine for measurement mechanical power-equipment output power.
Background technology
Dynamometer machine also claims dynamometer, is the measurement of power equipment that is widely used in machinery industry, can be used as the loading equipemtn of gear case, speed reduction unit, wheel box, also can be used for testing their transmitted power and the utility appliance of experiment.Use in the market wider roughly have hydraulic dynamometer, electric eddy current dynamometer, electric dynamometer.Wherein, electric dynamometer utilizes motor to measure the torque of exporting on the various power mechanical shafts, and in conjunction with the equipment of rotating speed with definite power.But because various measured power machine rotating speeds are not quite similar, therefore, as the motor of electric dynamometer must be can stepless speed control motor.Common dynamometer machine has direct current dynamometer, ac dynamometer and eddy current dynamometer at present.
Common dynamometer machine or the measured power scope of application are smaller in the market, can not satisfy the power measurement of the acting equipment of relatively high power, and accurate not aspect precision, control, and can carry out that high-power scope measures the dynamometer machine price comparison expensive, maintenance difficult, and in case run into tested power machine under the operating mode that impact speed, change are accelerated, existing dynamometer machine can't respond accurately fast and measure.
Summary of the invention
Technical matters to be solved by this invention is the little and tested power machine of present dynamometric power measurement range under the operating mode that impact speed, change are accelerated, and existing dynamometer machine can't respond the defective of accurately measuring fast.The invention provides a kind of novel dynamometer machine, not only can measure large-scale plant equipment output work and can also accurately finish the measurement that plant equipment is in impact speed, becomes the power under the operating mode of accelerating.
Technical scheme
In order to realize above-mentioned technical purpose, the present invention designs a kind of novel dynamometer machine, it is characterized in that: it comprises the magnetic flow liquid case, magnetic flow liquid case inside is full of magnetic flow liquid, magnetic flow liquid case inside also is provided with two parallel potential plate, two parallel potential plate are received respectively on variable direct supply the two poles of the earth, two parallel potential plate are received on the circuit of direct supply reometer are housed, one in the two parallel potential plate also is fixedly connected with transmission shaft, center transmission shaft is vertical with potential plate, the external cooling device of magnetic flow liquid case is equipped with speed probe on the transmission shaft.
Described do not have the potential plate of connection for transmission axle to be fixed in the magnetic flow liquid case.
Described variable direct supply is controllable power supply.
Beneficial effect
The invention provides a kind of novel dynamometer machine, not only can measure large-scale plant equipment output work and can also in short supplyly finish the measurement that plant equipment is in impact speed, becomes the power under the operating mode of accelerating.Whole machine construction is simple, and measuring accuracy is high, and measurement range is wide, operates comparatively simple.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
A kind of novel dynamometer machine, it comprises magnetic flow liquid case 1, magnetic flow liquid case 1 inside is full of magnetic flow liquid, magnetic flow liquid case 1 inside also is provided with two parallel potential plate 2,3, two parallel potential plate 2,3 are received respectively on variable direct supply 4 the two poles of the earth, two parallel potential plate 2,3 are received on the circuit of direct supply 4 reometer 5 are housed, one in the two parallel potential plate 2,3 also is fixedly connected with transmission shaft 201, transmission shaft 201 centers are vertical with potential plate 2, magnetic flow liquid case 1 external cooling device 6 is equipped with speed probe 201a on the transmission shaft 201.
Described do not have the potential plate 3 of connection for transmission axle 201 to be fixed in the magnetic flow liquid case 1.
Described variable direct supply 4 is controllable power supply.
As shown in Figure 1, dynamometer of the present invention is a device for power absorption, and it is transformed into heat energy with the equipment under test output power that absorbs.When needing to measure, the output shaft of transmission shaft 201 with equipment under test 7 is fixedly connected with, because parallel potential plate 2,3 receive on the direct supply 4, parallel potential plate 2, magnetic field is arranged between 3, be fixedly connected with potential plate 2 owing to transmission shaft 201 simultaneously, transmission shaft 201 rotates, drive potential plate 2 and rotate cutting magnetic line, produce shearing force, in addition, parallel potential plate 2, be distributed with magnetic current between 3, utilize the magnetic flow liquid principle to make that magnetic current is adding the orderly structure of formation under the magnetic fields between the parallel potential plate, moment has been reduced the flowability of solid particle within the response time of Millisecond, has increased the viscosity of fluid.During measurement, the power of equipment under test 7 engines output is delivered to transmission shaft 201, the parallel potential plate 2 with the left side of transmission shaft 201 is rigidly connected, transmission shaft 201 drives the parallel potential plate 2 cutting magnetic currents in left side, produce shearing force, shearing reacting force and hinder the parallel potential plate 2 cutting magnetic currents in transmission shaft 201 drive left sides, is the load purpose thereby reach the balanced engine output power.
Thereby the present invention changes electromotive force extent between two parallel-plates 2,3 and realizes changing the intensity in magnetic field and satisfy measurement under the engine different output power by changing power supply 4 voltage swings, response time owing to magnetic flow liquid can reach the Millisecond precision again, moment just can change the flowability of magnetic current in the magnetic field, so dynamometer machine is in high-power measurement with become to accelerate, be used widely during impact speed operating mode.
Claims (3)
1. novel dynamometer machine, it is characterized in that: it comprises magnetic flow liquid case (1), magnetic flow liquid case (1) inside is full of magnetic flow liquid, the inner two parallel potential plate (2 that also are provided with of magnetic flow liquid case (1), 3), two parallel potential plate (2,3) receive respectively on variable direct supply (4) the two poles of the earth, two parallel potential plate (2,3) receive on the circuit of direct supply (4) reometer (5) is housed, two parallel potential plate (2,3) one in also is fixedly connected with transmission shaft (201), transmission shaft (201) center is vertical with potential plate (2), the external cooling device of magnetic flow liquid case (1) (6) is equipped with speed probe (201a) on the transmission shaft (201).
2. a kind of novel dynamometer machine as claimed in claim 1, it is characterized in that: described do not have the potential plate (3) of connection for transmission axle (201) to be fixed in the magnetic flow liquid case (1).
3. a kind of novel dynamometer machine as claimed in claim 1, it is characterized in that: described variable direct supply (4) is controllable power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104282258A CN102944346A (en) | 2012-10-31 | 2012-10-31 | Novel dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104282258A CN102944346A (en) | 2012-10-31 | 2012-10-31 | Novel dynamometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102944346A true CN102944346A (en) | 2013-02-27 |
Family
ID=47727308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104282258A Pending CN102944346A (en) | 2012-10-31 | 2012-10-31 | Novel dynamometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102944346A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792446A (en) * | 2015-03-10 | 2015-07-22 | 上海工程技术大学 | Magnetorheological fluid power testing device |
| CN107764446A (en) * | 2017-08-31 | 2018-03-06 | 杭州威衡科技有限公司 | A kind of frequency-changing control system based on electric dynamometer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604198A (en) * | 1950-06-02 | 1952-07-22 | Gen Electric | Magnetic dynamometer |
| US20050230211A1 (en) * | 2004-04-16 | 2005-10-20 | Weilant David R | Hydrodynamic coupling apparatus |
| CN202119794U (en) * | 2011-05-09 | 2012-01-18 | 重庆师范大学 | Magnetorheological fluid acceleration intelligent sensing system |
| CN102401032A (en) * | 2010-09-07 | 2012-04-04 | 崔莉莉 | Design method based on electrorheological and magnetorheological clutch |
| JP2012137109A (en) * | 2010-12-24 | 2012-07-19 | Nissan Motor Co Ltd | Magnetorheological fluid type torque converter |
| CN102654535A (en) * | 2011-03-03 | 2012-09-05 | 重庆师范大学 | Intelligent sensing method based on magneto-rheological grease (liquid) and capacitance-type sensor thereof |
-
2012
- 2012-10-31 CN CN2012104282258A patent/CN102944346A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604198A (en) * | 1950-06-02 | 1952-07-22 | Gen Electric | Magnetic dynamometer |
| US20050230211A1 (en) * | 2004-04-16 | 2005-10-20 | Weilant David R | Hydrodynamic coupling apparatus |
| CN102401032A (en) * | 2010-09-07 | 2012-04-04 | 崔莉莉 | Design method based on electrorheological and magnetorheological clutch |
| JP2012137109A (en) * | 2010-12-24 | 2012-07-19 | Nissan Motor Co Ltd | Magnetorheological fluid type torque converter |
| CN102654535A (en) * | 2011-03-03 | 2012-09-05 | 重庆师范大学 | Intelligent sensing method based on magneto-rheological grease (liquid) and capacitance-type sensor thereof |
| CN202119794U (en) * | 2011-05-09 | 2012-01-18 | 重庆师范大学 | Magnetorheological fluid acceleration intelligent sensing system |
Non-Patent Citations (3)
| Title |
|---|
| 郭崇志等: "圆盘式磁流变传动装置输出转矩的计算", 《机械传动》 * |
| 马久河灯: "磁流变传动装置理论分析与实验测试", 《河北工业科技》 * |
| 高丽霞等: "盘式磁流变液离合器传递的扭矩分析与磁路设计", 《煤矿机械》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792446A (en) * | 2015-03-10 | 2015-07-22 | 上海工程技术大学 | Magnetorheological fluid power testing device |
| CN107764446A (en) * | 2017-08-31 | 2018-03-06 | 杭州威衡科技有限公司 | A kind of frequency-changing control system based on electric dynamometer |
| CN107764446B (en) * | 2017-08-31 | 2020-01-14 | 杭州威衡科技有限公司 | Frequency conversion control system based on electric dynamometer |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130227 |