CN201637520U - Motor load torque measuring mechanism - Google Patents
Motor load torque measuring mechanism Download PDFInfo
- Publication number
- CN201637520U CN201637520U CN2010201550716U CN201020155071U CN201637520U CN 201637520 U CN201637520 U CN 201637520U CN 2010201550716 U CN2010201550716 U CN 2010201550716U CN 201020155071 U CN201020155071 U CN 201020155071U CN 201637520 U CN201637520 U CN 201637520U
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- motor
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- measuring mechanism
- load torque
- pedestal
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Abstract
The utility model discloses a motor load torque measuring mechanism which is characterized in that a motor rotor is fixedly connected with a load transmission shaft; a motor is installed on a base; a motor stator is in floating structure which rotates relative to the base through a bearing; the floating structure is formed by fixedly connecting a motor mounting flange with a floating flange; the floating flange is supported on the base through the bearing; the motor load torque measuring mechanism is provided with a stop mechanism which comprises a moment transmission block, a stop frame and a load-weight sensor, wherein the moment transmission block protrudes on the periphery of the floating flange along the radial direction; the stop frame is fixedly arranged on the base in a corresponding position; the stop frame stops the moment transmission block from rotating in the circumferential direction; the load-weight sensor is arranged on the acting surfaces of the moment transmission block and the stop frame; and a detection signal of the load-weight sensor is used as an output signal of the measuring mechanism. The measurement result of the motor load torque measuring mechanism is not affected by motor efficiency and other factors and is unrelated to the power grid voltage change and the motor operating frequency.
Description
Technical field
The utility model relates to a kind of electric motor load torque measuring mechanism.
Background technology
Measuring electric motor load torque with torque sensor is present method in common.Torque sensor is installed between motor output shaft and the working machine transmission shaft, or is sleeved on the working machine transmission shaft, realizes accurate measurement to electric motor load torque by the moment of torsion variable of measuring transmission shaft.Because it is harsh that torque sensor requires environment for use, should not be continuously long-running, exist demarcation loaded down with trivial details simultaneously, problems such as anti-overload ability difference, therefore, measure the method for electric motor load torque with torque sensor and only use usually, be not suitable for the industrial environment of inclement condition in the laboratory.Also can observe electric motor load torque, but the set torque that frequency converter shows is by measuring by frequency converter, but converse according to electric current, voltage and frequency change.Because be subjected to factor affecting such as electric efficiency, electric energy is not 100% the mechanical energy that is converted into, therefore, the method that adopts frequency converter to observe load torque only is applicable to the occasion that accuracy requirement is not high.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, and the influence that provides a kind of measurement result not to be subjected to factors such as electric efficiency is with the electric motor load torque measuring mechanism of grid voltage change and machine operation frequency-independent.
The measuring method of electric motor load torque is in the utility model:
Motor is installed on the pedestal, rotor and load propeller shaft couplings; Motor stator is set by being relatively turnable floating structure between bearing and the pedestal;
Described measuring method is to cause the counter-rotational stop mechanism of stator at the reacting force that is provided between motor stator and the pedestal stoping motor stator to act on stator when rotor rotates, because of stoping motor stator to rotate suffered directed force F, load torque is directly proportional with described directed force F the described stop mechanism of measurement when machine operation in real time.
The design feature of the utility model electric motor load torque measuring mechanism is:
Rotor and load transmission shaft are fixedly connected, and motor is installed on the pedestal; Motor stator is set by being relatively turnable floating structure between bearing and the pedestal;
Described floating structure is to be fixedly connected with unsteady ring flange with the motor mounting flange, and described unsteady ring flange is bearing on the described pedestal by bearing;
Stop mechanism is set, described stop mechanism is that the periphery that is included in the ring flange that floats has radially protruded out the moment conductive block, fixedly install stop frame on the pedestal of correspondence position, the rotation in a circumferential direction of described moment conductive block is subjected to stopping of stop frame, and the acting surface of described moment conductive block and stop frame is provided with load sensor; Detection signal with described load sensor is the measuring mechanism output signal.
When rotor rotates under the effect of rotating magnetic field drag torque, motor stator is subjected to an equal reacting force, this reacting force can cause the motor stator upset, by the upset of restriction motor stator, and measure the value of the reacting force cause the motor stator upset, thereby realize accurate measurement to electric motor load torque.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model measurement result is not subjected to the influence of factors such as electric efficiency, with grid voltage change and machine operation frequency-independent.
2, the measuring sensor in the utility model method is a load sensor, and load sensor has been widely used in Industry Control and commercial metering field as measuring sensor.Such as, in equipment such as belt conveyer scale, track scale, electronic platform scale, all be as measuring sensor with load sensor.Load sensor has the precision height, demarcation is simple, reliability is high, anti-overload ability is strong, to characteristics such as the rugged surroundings adaptive faculty are strong.Therefore, the utility model based on the measuring method of load sensor in the industrial control field that need accurately measure electric motor load torque, have high reliability and practicality, solved industry spot to electric motor load torque carry out in real time, continuously, the difficult problem accurately measured.
Description of drawings
Fig. 1 a is the utility model measuring method schematic diagram.
Fig. 1 b is the utility model measuring method another way schematic diagram.
Fig. 2 is the utility model measurement mechanism structural representation.
Fig. 3 is applied to the apparatus structure synoptic diagram of granular material flow metering for the utility model.
Fig. 4 is applied to measuring disk structural representation in the device of granular material flow metering for the utility model.
Number in the figure: 1 unsteady ring flange, 2 speed probes, 3 pedestals, 4 bearings, 5 rotors, 6 motors, 7 motor stators, 9 moment conductive block, 10 load sensors, 12 top boards, 13 stop frames, 14 transmission shafts, 15 measuring disk, 16 guide blades, 17 charging apertures, 18 material-falling hoppers, 19 discharging openings.
Embodiment
The measuring method of the electric motor load torque in the present embodiment is:
Referring to Fig. 1 a and Fig. 1 b, rotor 5 is fixedly connected with the load transmission shaft, and motor 6 is installed on the pedestal 3; Motor stator 7 is set is relatively turnable floating structure with pedestal 3;
Measuring method is to be provided for stoping motor stator 7 counter-rotational stop mechanism under rotor 5 acting forces between motor stator 7 and the pedestal 3, measure stop mechanism in real time and when machine operation, rotate suffered directed force F because of prevention motor stator 7, load torque is directly proportional with described directed force F, obtains load torque with this.
Electric motor load torque measuring mechanism in the present embodiment is:
Referring to Fig. 1 a, Fig. 1 b and Fig. 2, rotor 5 is fixedly connected with the load transmission shaft, and motor 6 is installed on the pedestal 3; Motor stator 7 is set is relatively turnable floating structure with pedestal 3;
Floating structure is the unsteady ring flange 1 of fixedlying connected with the motor mounting flange, and the ring flange 1 that floats is bearing on the pedestal 3 by bearing 4;
Stop mechanism is set, stop mechanism is that the periphery that is included in the ring flange 1 that floats has radially protruded out moment conductive block 9, fixedly install stop frame 13 on the pedestal 3 of correspondence position, moment conductive block 9 rotation in a circumferential direction is subjected to stopping of stop frame 13, and moment conductive block 9 is provided with load sensor 10 with the acting surface of stop frame 13; Detection signal with load sensor 10 is the measuring mechanism output signal.
In concrete the enforcement, the load sensor shown in Fig. 1 a is a pressure transducer, and the described load sensor of Fig. 1 b is pulling force sensor, and is shown in Figure 2, need be equipped with speed probe 2, the load torque when being used to measure the motor different rotating speeds.
Present embodiment being applied as in the granular material flow measurement device:
Referring to Fig. 3, motor connects with transmission shaft 14 by shaft coupling, and transmission shaft 14 is fixedlyed connected with measuring disk 15; Be provided with and be relatively turnable floating structure between motor stator 7 and the pedestal 3;
Floating structure is the unsteady ring flange 1 of fixedlying connected with the motor mounting flange, and the ring flange 1 that floats is bearing on the pedestal 3 by bearing 4;
Stop mechanism is set, stop mechanism is that the periphery that is included in the ring flange that floats has radially protruded out moment conductive block 9, fixedly install stop frame 13 on the pedestal 3 of correspondence position, moment conductive block 9 rotation in a circumferential direction is subjected to stopping of stop frame 13, and moment conductive block 9 is provided with load sensor 10 with the acting surface of stop frame 13; Detection signal with load sensor 10 is the measuring mechanism output signal;
Measuring disk 15 is the rotating disks that radially are evenly distributed with guide blade 16 and rotate with motor along it, and the feed opening of material-falling hopper 18 is undertaken on the central feeding district of described measuring disk 15, and powder is along the excircle top discharge of guide blade in measuring disk in the measuring disk.
In concrete the enforcement, pedestal 3 is fixedly connected on the measuring apparatus top board 12, and top board 12 is provided with charging aperture 17; The granular material that is measured enters measuring apparatus by charging aperture 17, and falls within the center chassis of measuring disk 15 by material-falling hopper 18.Measuring disk 15 constant speed revolution under motor-driven, the material that enters measuring disk 15 is along guide blade 16 radial motion and leave measuring disk from inside to outside, and the material that leaves measuring disk draws off in bottom discharging opening 19.
Granular material flow measurement device shown in Fig. 3 and Fig. 4 has been used Coriolis mechanics principle.Be subjected to the description of Coriolis force effect when in even rotation reference system, moving according to particle, measuring disk 15 is the constant speed revolution under motor-driven, the granular material of falling the measuring disk center changes flow direction back is caught by guide blade 16, and guide blade 16 moves to outer rim in the action of centrifugal force lower edge.In the motion process, material is when being subjected to tangential Coriolis force effect, the guide blade has been applied the motion by reaction moment that is equal to, this motion by reaction moment is directly proportional with the throughput of material, the load torque that overcomes this motion by reaction moment output with motor is directly proportional, by measuring the metering of electric motor load torque realization to granular material.
Claims (1)
1. electric motor load torque measuring mechanism is characterized in that:
Rotor (5) is fixedly connected with the load transmission shaft, and motor (6) is installed on the pedestal (3); Motor stator (7) is set by being relatively turnable floating structure between bearing and the pedestal (3);
Described floating structure is to be fixedly connected with unsteady ring flange (1) with the motor mounting flange, and described unsteady ring flange (1) is bearing on the described pedestal (3) by bearing (4);
Stop mechanism is set, described stop mechanism is that the periphery that is included in unsteady ring flange (1) has radially protruded out moment conductive block (9), fixedly install stop frame (13) on the pedestal of correspondence position (3), described moment conductive block (9) rotation in a circumferential direction is subjected to stopping of stop frame (13), and described moment conductive block (9) is provided with load sensor (10) with the acting surface of stop frame (13); Detection signal with described load sensor (10) is the measuring mechanism output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201550716U CN201637520U (en) | 2010-04-08 | 2010-04-08 | Motor load torque measuring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201550716U CN201637520U (en) | 2010-04-08 | 2010-04-08 | Motor load torque measuring mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637520U true CN201637520U (en) | 2010-11-17 |
Family
ID=43082022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201550716U Expired - Lifetime CN201637520U (en) | 2010-04-08 | 2010-04-08 | Motor load torque measuring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201637520U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793576A (en) * | 2010-04-08 | 2010-08-04 | 陈苏琦 | Measurement method of electric motor load torque and application thereof |
| CN104215373A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Motor torque testing device and motor torque testing method |
| CN106940253A (en) * | 2017-03-01 | 2017-07-11 | 浙江兆丰机电股份有限公司 | Automobile hub bearing friction torque detection means |
| CN113340367A (en) * | 2021-06-29 | 2021-09-03 | 安徽理工大学 | Coriolis powder flowmeter, calibration device and use method thereof |
| CN113503935A (en) * | 2021-06-29 | 2021-10-15 | 安徽理工大学 | Powder flowmeter |
-
2010
- 2010-04-08 CN CN2010201550716U patent/CN201637520U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793576A (en) * | 2010-04-08 | 2010-08-04 | 陈苏琦 | Measurement method of electric motor load torque and application thereof |
| CN104215373A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Motor torque testing device and motor torque testing method |
| CN106940253A (en) * | 2017-03-01 | 2017-07-11 | 浙江兆丰机电股份有限公司 | Automobile hub bearing friction torque detection means |
| CN113340367A (en) * | 2021-06-29 | 2021-09-03 | 安徽理工大学 | Coriolis powder flowmeter, calibration device and use method thereof |
| CN113503935A (en) * | 2021-06-29 | 2021-10-15 | 安徽理工大学 | Powder flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |