CN105043620B - A kind of micro machine dynamometer machine - Google Patents
A kind of micro machine dynamometer machine Download PDFInfo
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- CN105043620B CN105043620B CN201510294131.XA CN201510294131A CN105043620B CN 105043620 B CN105043620 B CN 105043620B CN 201510294131 A CN201510294131 A CN 201510294131A CN 105043620 B CN105043620 B CN 105043620B
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- electronic scale
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Abstract
A kind of micro machine dynamometer machine, including rack；It is fixed on the pulley of tested shaft extension end of motor and the cotton rope around pulley；Rotation-speed measuring device；It is constrained in the pulling force sensor of upper rack and power sensing direction vertically downward, its sensor ends is fixed in rope upper end；It is supported on the electronic scale of frame lower；Electronic scale scale pan, suction direction are supported on vertically downward and by the adjustable electromagnet controlled for electric installation, its armature is fixed in rope lower end；The metering device of rotation-speed measuring device, pulling force sensor and electronic scale output signal is received, as the following formula the measurement result of output motor power P：P=n (GX+(G0G) F) in (R+r) formula：N --- tested motor speed；GX--- armature weight；G0--- the weight that electronic scale measures before electromagnet is not powered on；G --- electromagnet is to set the weight that electronic scale measures when voltage is powered；The pulling force that F --- pulling force sensor measures；R --- pulley radius；R --- cotton rope radius.The dynamometer machine can be used for the output power of the small motor of automatic measurement.
Description
Technical field
The present invention relates to a kind of micro machine dynamometer machine more particularly to its loading device and controls, in International Patent Classification (IPC)
In, G01L3/00 can be belonged to.
Background technology
National sector standard JB/T9544《Small-power syn-chronous motor test method》It provides and is suitable for shaft power number watt
Within small motor torque measuring method --- rope pulley method.The torque measuring device of prior art rope pulley method
It is to be measured with manually increasing and decreasing counterweight load, working efficiency is low and therefore surveyed torque characteristics can only be interrupted, it is also difficult to instantaneous
Directly obtain the output power of tested motor.
Invention content
The technical problem to be solved by the present invention is to propose a kind of micro machine dynamometer machine, can improve depositing for the prior art
In problem.
The technical solution that the present invention solves technical problem is a kind of micro machine dynamometer machine, includes the machine of fixed tested motor
Frame and it is directly anchored to the pulley of tested shaft extension end of motor and the cotton rope around pulley, further includes：
--- rotation-speed measuring device；
--- one is constrained in the pulling force sensor of upper rack and power sensing direction vertically downward, and the rope upper end is fixed
In its sensor ends；
--- one is supported on the electronic scale of frame lower；
--- one be supported on the electronic scale scale pan, suction direction vertically downward and by one it is adjustable for electric installation control
Electromagnet, its armature is fixed in the rope lower end；
--- one receives the metering device of the rotation-speed measuring device, pulling force sensor and electronic scale output signal, the dress
Set the measurement result of output motor power as the following formula：
P=n (GX+(G0-G)-F)(R+r)
In formula：P --- the measurement result of tested motor power (output)；
N --- the tested motor speed of rotation-speed measuring device output；
GX--- armature weight；
G0--- the weight that electronic scale measures before electromagnet is not powered on；
G --- electromagnet is to set the weight that electronic scale measures when voltage is powered；
The pulling force that F --- pulling force sensor measures；
R --- pulley radius；
R --- cotton rope radius.
The dynamometer machine is dexterously measured with electromagnetic force load and loss of weight, is realized the continuous of rope pulley method torque measurement and is added
It carries, eliminates artificial plus counterweight trouble, thus easily realize automatic measurement, and can instantaneously directly obtain tested electricity
The output power of motivation.
Further design is that the rotation-speed measuring device is made of the pulley and an optical chopper for it；The pulley edge
A coaxial even circumferential is distributed the identical axial through-hole of multiple sizes, luminescence component and the light group of the optical chopper
Part is located at left and right two side of the circumference, and the output signal of light-receiving module inputs the metering device.The pulley one of the design
Object is dual-purpose, inexpensive and reliable.
Description of the drawings
Fig. 1 is the structure and circuit diagram of micro machine dynamometer machine of the embodiment of the present invention.
Fig. 2 is the pulley axial direction open-celled structure schematic diagram of micro machine dynamometer machine of the embodiment of the present invention.
Specific implementation mode
Micro machine dynamometer machine structure of the embodiment of the present invention is as shown in Figure 1, include：
--- the rack 1 of fixed tested motor 4, tested motor 4 are supported on the erecting bed at 1 middle part of rack；
--- it is directly anchored to the pulley 6 of the axle stretch end 5 of tested motor 4 and the cotton rope 7 around pulley 6；
--- pulley 6 is uniformly distributed the identical axial through-hole of 30 sizes along coaxial circumference 60 as shown in Figure 2,
Luminescence component 61 and the light-receiving module 62 of the optical chopper of dual proplasm or shell insert type are located at the left and right of circumference 60
Two sides；
--- shell is fixed on the pulling force sensor 2 at 1 top of rack, and vertically downward, 7 upper end of rope is solid for power sensing direction
Due to the sensor ends of pulling force sensor 2；
--- it is supported on the electronic scale 3 of 1 bottom of rack；
--- it is supported on the scale pan of electronic scale 3 and the electromagnet 9 of suction direction vertically downward, 7 lower end of rope is fixed on
The armature 8 of electromagnet 9；Electromagnet 9 is powered by pressure regulator 91；
--- the microcontroller 11 with digital display as output, input port receive optical chopper light-receiving module 62
The gravity electric signal that the pulling force electric signal and electronic scale 3 that the pulse signal of output, pulling force sensor 2 export export, and it is built-in with
The calculation procedure of lower formula：
M=(GX+(G0-G)-F)(R+r)
P=n (GX+(G0-G)-F)(R+r)
N=1/30T
In formula：M --- 4 torque measurements of tested motor, unit：Nm；
GX--- the weight of armature 8, unit：N；
G0--- the weight for 9 fixed part of electromagnet that electronic scale 3 measures before electromagnet 9 is not powered on, unit：N；
The weight that electronic scale 3 measures when G --- electromagnet 9 inputs the output voltage that pressure regulator 91 is set, unit：N；
The pulling force that F --- pulling force sensor 2 measures, unit：N；
The radius of R --- pulley 6, unit：m；
The radius of r --- cotton rope 7, unit：m；
P --- the measurement result of the power of tested motor 4, unit：w；
N --- the rotating speed of tested motor 4, unit：r/s；
The pulse period that T --- light-receiving module 62 exports, unit：s.
Application method is as follows：
--- device, which is powered, to be preheated；
--- the output adjustment of pressure regulator 91 is zero, allows electronic scale 3 to measure and remembers electronic scale 3 before electromagnet 9 is not powered on
The gravity G measured0；
--- the output voltage of pressure regulator 91 is gradually risen, the weight G that electronic scale 3 measures is applied to rope 7 with armature 8
Pulling force increases and reduces, and is applied to 4 torque T of tested motor and increases, the torque of the digital display simultaneous display of microcontroller 11,
The torque is by the torque under the voltage being adjusted to corresponding to the energized state of tested motor 4 and pressure regulator 91.In microcontroller
It sets the program torque and is multiplied by the rotating speed that the pulse period T exported by light-receiving module 62 is calculated to get to tested motor 4
Output power, and come out in the digital display simultaneous display of microcontroller 11.
This measures pulling force vertically downward using weight reduction using electronic scale ingenious in designly, avoids using pulling force sensor
Various adverse effects (such as power displacement stroke is shorter) of the pulling force are measured, and electronic scale convenient for measurement and calibration and is installed and used,
But it should be noted the weight G of fixed part of the design electromagnet 9 in addition to armature 80More than (the half of 4 torque T/ pulleys 6 of tested motor
Diameter R), if the weight is insufficient, counterweight appropriate need to be accompanied by.
Further, it is also possible to there is following design change：
--- electronic scale 3 is changed to directly use load sensor, and from it directly to microcontroller output signal, i.e. loading senses
Device also belongs to the explanation range of this patent term " electronic scale "；
--- microcontroller 11 is changed to the digital face for having the function of with multichannel input and programing function described in this specification
Plate table or similar automatic detection metering device；
--- the rotation-speed measuring device of photo-electric reflection type can also be used.
Claims (1)
1. a kind of micro machine dynamometer machine includes the rack of fixed tested motor, is directly anchored to tested shaft extension end of motor
Pulley and cotton rope around pulley, which is characterized in that further include：
--- rotation-speed measuring device；
--- one is constrained in the pulling force sensor of upper rack and power sensing direction vertically downward, it is fixed in the cotton rope upper end
Sensor ends；
--- one is supported on the electronic scale of frame lower；
--- one is supported on the electronic scale scale pan, suction direction vertically downward and by an adjustable electricity controlled for electric installation
Its armature is fixed in magnet, the cotton rope lower end；
--- one receives the metering device of the pulling force sensor and electronic scale output signal, device output motor as the following formula
The measurement result of power：
P=n (GX+(G0-G)-F)(R+r)
In formula：P --- the measurement result of tested motor power (output)；
The tested motor speed that n --- rotation-speed measuring device measures；
GX--- armature weight；
G0--- the weight that electronic scale measures before electromagnet is not powered on；
G --- electromagnet is to set the weight that electronic scale measures when voltage is powered；
The pulling force that F --- pulling force sensor measures；
R --- pulley radius；
R --- cotton rope radius；
The G0>GX+(G0-G)-F；
The rotation-speed measuring device includes the pulley and optical chopper；The pulley is distributed more along a coaxial even circumferential
The identical axial through-hole of a size, it is left and right that luminescence component and the light-receiving module of the optical chopper are located at the circumference
The output signal of two sides, light-receiving module inputs the metering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510294131.XA CN105043620B (en) | 2015-05-31 | 2015-05-31 | A kind of micro machine dynamometer machine |
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| CN201510294131.XA CN105043620B (en) | 2015-05-31 | 2015-05-31 | A kind of micro machine dynamometer machine |
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| CN105043620A CN105043620A (en) | 2015-11-11 |
| CN105043620B true CN105043620B (en) | 2018-07-13 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128697A (en) * | 2010-12-15 | 2011-07-20 | 西安理工大学 | High-speed motorized spindle non-contact loading force and torque testing device and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH607003A5 (en) * | 1977-06-29 | 1978-11-30 | Mettler Instrumente Ag | |
| CN201007718Y (en) * | 2006-12-22 | 2008-01-16 | 宁波南车时代传感技术有限公司 | Locomotive axle terminal photoelectric rotary speed sensor |
| CN102749169B (en) * | 2012-07-13 | 2014-11-05 | 襄樊五二五泵业有限公司 | Simple and easy pressure calibration device of annular pressure sensor |
| CN203490008U (en) * | 2013-09-06 | 2014-03-19 | 马夸特开关(上海)有限公司 | Contact force measurement device of electromechanical switch contact |
| CN203643262U (en) * | 2013-12-16 | 2014-06-11 | 河海大学 | Direct rock tension testing device loaded by electromagnetic force |
| CN104141733B (en) * | 2014-07-22 | 2016-08-24 | 西安电子科技大学 | A kind of Electromagnetic Dynamic charger |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128697A (en) * | 2010-12-15 | 2011-07-20 | 西安理工大学 | High-speed motorized spindle non-contact loading force and torque testing device and method |
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Effective date of registration: 20180522 Address after: 511453 6, 30 Tai Chi Road, Tai Shi Industrial Zone, Tung Chung Town, Nansha District, Guangzhou, Guangdong. Applicant after: Guangzhou Xianhe Technology Engineering Co., Ltd. Address before: 529020, 4 of the East dike garden, Pengjiang Road, Pengjiang, Jiangmen, 102 Applicant before: Ye Luwei |
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