CN105444949B - A kind of rotary inertia testboard based on torque sensor - Google Patents

A kind of rotary inertia testboard based on torque sensor Download PDF

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Publication number
CN105444949B
CN105444949B CN201510777720.3A CN201510777720A CN105444949B CN 105444949 B CN105444949 B CN 105444949B CN 201510777720 A CN201510777720 A CN 201510777720A CN 105444949 B CN105444949 B CN 105444949B
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China
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torsion bar
ball bearing
torque
rotary inertia
workbench
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CN201510777720.3A
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CN105444949A (en
Inventor
谭小群
黄永超
王战玺
白晶
秦现生
李树军
张顺琦
李靖
冯华山
于薇薇
楚磊
郭欣
李希
王军宁
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00Testing static or dynamic balance of machines or structures
    • G01M1/10Determining the moment of inertia
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00Testing static or dynamic balance of machines or structures
    • G01M1/02Details of balancing machines or devices

Abstract

The invention discloses a kind of rotary inertia testboard based on torque sensor, rotated using torque motor driving workbench, by being acquired to the unloaded numerical value with torque sensor during loading and angular-rate sensor of workbench, testee rotary inertia is calculated.Rotary inertia testboard is made up of workbench, torsion bar transmission mechanism, drive device, electric-control system;The installation that workbench is used for testee positions, and the installation of design specialized clamping mechanism is on the table.Torsion bar transmission mechanism is used for driving torque, while can bear instantaneous torque when torque motor starts, and ensures that torque output is stable when test starts.Torsion bar transmission mechanism uses torque sensor and angular-rate sensor, convenient disassembly;Torque sensor and transmission axis connection, have measurement accuracy height, dismantle and demarcate the characteristics of quick.Carry out calculating rotary inertia numerical value by measuring moment of torsion and angular-rate sensor data during work table rotation, measurement result multiplicity is high.

Description

A kind of rotary inertia testboard based on torque sensor
Technical field
The present invention relates to a kind of rotary inertia testboard, specifically, is related to a kind of rotation based on torque sensor and is used to Testing table;Belong to rotation inerttia field.
Background technology
The rotary inertia design parameter important as one is to the kinetic stability of equipment, operability, mobility and group Uniformity of resultant motion etc. has important influence, with combining closely for machinery and automatic technology and computer technology, with And various measurement sensors can realize higher and higher required precision, how be more convenient, fast, turning for object is accurately measured Dynamic inertia turn into one it is in the urgent need to address the problem of.Patent of invention CN102692264A discloses a kind of for quality, barycenter Position and the testboard and method of testing of rotary inertia.The test platform includes detent mechanism, clamp system, workbench, lifting Mechanism, Power Component, housing, control cabinet, electric control gear composition.The testboard obtains the angle of system using encoder second differential Acceleration, second differential method calculating angular acceleration precision is low, and unobvious are showed for angular acceleration change.The testboard uses Motor direct-drive workbench is swung, and starting torque is larger during due to electric motor starting, and output torque is unstable, to torque sensor Measurement result has a great influence.The testboard is quality, barycenter and rotary inertia integrated test test stand due to working table movement mode Difference, design specialized mechanism make quality center of mass measurement separately be carried out with rotation inerttia, operation inconvenience, testboard rotary inertia During measurement, the bindiny mechanism between torque sensor and workbench is complicated, friction interference be present, mistake is brought to rotation inerttia Difference.
Patent of invention CN103542982A discloses a kind of large structure Measurement System of " Moment of Inertia.The system is measurable The multi-direction rotary inertia of object, by driving testee to rock, its damped oscillation frequency is measured to calculate rotary inertia.Due to Measurement direction, which changes, to be needed to assemble equipment rotating cylinder component, operation inconvenience.When testee is unsymmetric structure, due to Error be present in trip bolt asymmetric adjustment, rotation inerttia.
The content of the invention
In order to avoid the shortcomings of the prior art, overcome there is now rotary inertia testboard efficiency is low, measurement accuracy is low, The low deficiency of multiplicity, the present invention propose a kind of rotary inertia testboard based on torque sensor.Testboard is passed using moment of torsion Sensor and angular-rate sensor, torque sensor and angular-rate sensor data calculate quilt when being rotated by gathering multigroup workbench Object rotation inertia is surveyed, has precision high, automaticity is high, and time of measuring is short, easy to operate.
The technical solution adopted for the present invention to solve the technical problems is:Including workbench, torsion bar transmission mechanism, driving dress Put, electric-control system;The workbench is rectangular configuration, and workbench is fixed on lateral fiducial bar and longitudinal datum strip, laterally Angle is 90 degree between datum strip and longitudinal datum strip, and transition disc is located at work table rotation center;
The torsion bar transmission mechanism includes angular-rate sensor, thrust ball bearing lid, thrust ball bearing, thrust ball bearing Seat, torsion bar sleeve, alignment pin, torsion bar, outer sleeve, deep groove ball bearing, insulated cylinder, isolation annulus, torque sensor, shaft coupling Device, thrust ball bearing lid one end are connected with transition disc, and angular-rate sensor covers positioned at thrust ball bearing, thrust ball bearing lid with Torsion bar sleeve connection, thrust ball bearing seat are fixed in frame, and thrust ball bearing is arranged in thrust ball bearing seat, torsion bar sleeve It is connected with thrust ball bearing internal diameter, torsion bar is located in torsion bar sleeve, and is connected with torsion bar sleeve by alignment pin, torsion bar sleeve position In in outer sleeve, there are a pair of deep groove ball bearings between torsion bar sleeve and outer sleeve, there are insulated cylinder, deep-groove ball between deep groove ball bearing Have between bearing and frame top plate and isolate annulus, outer sleeve is fixed on frame inside ceiling panel, torque sensor respectively with torsion bar and Power transmission shaft is connected by shaft coupling;
The drive device include torque motor, bearing block, bearing cap, electromagnetic brake, electromagnetic clutch, power transmission shaft, Angular contact ball bearing, support deckle board, drive device are located in frame, and torque motor is fixed on the motor cabinet below electromagnetic clutch Interior, torque motor output shaft is connected with electromagnetic clutch, and electromagnetic brake is below support deckle board, electromagnetic clutch and electromagnetism Brake is connected, and electromagnetic brake is fixed on support deckle board with being driven axis connection, support deckle board and torque sensor mounting seat It is connected, a pair of angular contact ball bearings are arranged on power transmission shaft by bearing block and bearing cap;
The electric-control system includes signal acquiring system and control system, and signal acquiring system is to torque sensor and angle speed Spend sensor real-time data collection information;Control system is used to control testboard to perform action, and sensor gathered data is handled, And rotary inertia numerical value is calculated by industrial computer.
Torsion bar, transition disc, electromagnetic clutch and torque motor are co-axially mounted.
Beneficial effect
A kind of rotary inertia testboard based on torque sensor proposed by the present invention, workbench is driven using torque motor Rotate, by being acquired to the unloaded numerical value with torque sensor during loading and angular-rate sensor of workbench, be calculated Testee rotary inertia.Rotary inertia testboard is made up of workbench, torsion bar transmission mechanism, drive device, electric-control system;Work Make installation and positioning that platform is used for testee, according to the size of testee, design specialized clamping mechanism is installed in work On platform.Torsion bar transmission mechanism is used for driving torque, while can bear instantaneous torque when torque motor starts, and ensures that test starts When torque output it is stable.Torsion bar transmission mechanism is equipped with angular-rate sensor, and transmission angular speed is measured.Torque sensor with Axis connection is driven, there is measurement accuracy height, dismantle and demarcate the characteristics of facilitating.Drive device is driven using torque motor, is ensured Motor output torque is stable.Drive device shields built with electromagnetic clutch to test system.
Rotary inertia testboard of the invention based on torque sensor, for measuring object rotation inertia;Its measurement range Extensively, datum strip is installed on workbench, can be according to the size design fixture of testee, it is convenient to split.Testboard automates journey Degree is higher, and measuring principle is simple, easy to operate, by measuring torque sensor and angular-rate sensor during work table rotation Numerical value, carry out calculating rotary inertia numerical value, measurement result multiplicity is high.Using torque sensor and angular-rate sensor, dismounting It is convenient;Working table structure is simple, assembling, splits fast, is easy to the maintenance of testboard.
Brief description of the drawings
A kind of rotary inertia testboard based on torque sensor of the present invention is made with embodiment below in conjunction with the accompanying drawings into One step describes in detail.
Fig. 1 is rotary inertia testing bench structure schematic diagram of the present invention.
Fig. 2 is the workbench schematic diagram of the present invention.
Fig. 3 is the Working table structure schematic diagram of the present invention.
Fig. 4 is the torsion bar transmission mechanism schematic diagram of the present invention.
Fig. 5 is inventive drive means schematic diagram.
In figure:
1. the lateral fiducial bar of 5. torque motor of workbench 2. angular-rate sensor, 3. frame, 4. torque sensor 6. 7. the torsion bar set of 11. thrust ball bearing seat of longitudinal 8. transition disc of datum strip 9. thrust ball bearing lid, 10. thrust ball bearing 12. The deep groove ball bearing 18. of 16. outer sleeve of cylinder 13. alignment pin, 14. torsion bar, 15. insulated cylinder 17. isolates the shaft coupling of annulus 19. Device 20. supports the power transmission shaft 26. of 24. electromagnetic clutch of deckle board 21. bearing block, 22. bearing cap, 23. electromagnetic brake 25. Angular contact ball bearing
Specific embodiment
The present embodiment is a kind of rotary inertia testboard based on torque sensor.
Refering to Fig. 1~Fig. 5, rotary inertia testboard of the present embodiment based on torque sensor, it is driven by workbench, torsion bar Mechanism, drive device, electric-control system composition;Workbench 1 is rectangular configuration, and the upper surface of workbench 1 is installed with lateral fiducial Bar 6 and longitudinal datum strip 7, angle is 90 degree between lateral fiducial bar 6 and longitudinal datum strip 7, and transition disc 8 is arranged on workbench 1 Centre of gyration position.According to testee size design special fixture during test object, lateral fiducial bar on workbench 1 is placed on 6 and longitudinal datum strip 7 at, be operated the positioning of the face of platform 1 and fixture.
Torsion bar transmission mechanism includes angular-rate sensor 2, thrust ball bearing lid 9, thrust ball bearing 10, thrust ball bearing seat 11st, torsion bar sleeve 12, alignment pin 13, torsion bar 14, outer sleeve 16, deep groove ball bearing 17, insulated cylinder 15, isolation annulus 18, torsion Square sensor 4, shaft coupling 19, the one end of thrust ball bearing lid 9 are connected with transition disc 8, and angular-rate sensor 2 is arranged on thrust ball axle Hold on lid 9, the measurement direction axle of angular-rate sensor 2 overlaps with the axis of torsion bar 14, ensures the measurement accuracy of angular-rate sensor 2.Push away Power ball bearing lid 9 is connected with torsion bar sleeve 12, and thrust ball bearing seat 11 is fixedly mounted in frame 3, and thrust ball bearing 10 is installed In thrust ball bearing seat 11, for carrying the vertical direction load of workbench 1.Torsion bar sleeve 12 connects with the internal diameter of thrust ball bearing 10 Connect, torsion bar is arranged in torsion bar sleeve 12, and is fixedly connected with torsion bar sleeve 12 by alignment pin 13, and torsion bar sleeve 12 is installed In outer sleeve 16, there are a pair of deep groove ball bearings 17 between torsion bar sleeve 12 and outer sleeve 16, have between two deep groove ball bearings 17 Insulated cylinder 15, has between deep groove ball bearing 17 and the top plate of frame 3 and isolates annulus 18, and outer sleeve 16 is fixedly mounted in frame 3 On top plate.Two measurement bars are stretched out at the both ends of torque sensor 4, and the one end of torque sensor 4 is connected with power transmission shaft 25 by shaft coupling 19 Connect, the other end of torque sensor 4 is connected with torsion bar 14 by shaft coupling 19, ensures that torque sensor 4 measures axis and torsion bar 14 Axis overlaps.
The section of torsion bar 14 is circle, and its one end is had pin-and-hole, connected using alignment pin 13, and the other end is connected using spline.When Can twist deformation when torsion bar 14 is around torsion bar axis application moment of torsion, and when applying moment of torsion increase, torsion bar 14 rotates around axis. The peak torque of the torsional deflection of torsion bar 14 carrying is turned round between the starting torque of torque motor 5 and moment of torsion nominal torque for overcoming Moment of torsion mutation problems when torque motor 5 starts.
Drive device includes torque motor 5, bearing block 21, bearing cap 22, electromagnetic brake 23, electromagnetic clutch 24, biography Moving axis 25, angular contact ball bearing 26, support deckle board 20, drive device are located in frame, and torque motor 5 is fixed on electromagnetic clutch In motor cabinet below 24, the output shaft of torque motor 5 is connected with electromagnetic clutch 24, and electromagnetic brake 23 is arranged on support deckle board Below 20, electromagnetic clutch 24 is connected with electromagnetic brake 23, and electromagnetic brake 23 is fixed on support deckle board 20 and power transmission shaft 25 connections, damping is produced when torque motor 5 turns round to power transmission shaft 25.Support deckle board 20 to fix with the mounting seat of torque sensor 4 to connect Connect, a pair of angular contact ball bearings 26 are arranged on power transmission shaft 25 by bearing block 21 and bearing cap 22.Torsion bar 14, transition disc 8, electricity Magnet clutch 24 is co-axially mounted with torque motor 5.Torque motor 5 is exported with constant-torque, is ensured defeated in the rotation process of workbench 1 It is stable to go out moment of torsion.
Electric-control system includes signal acquiring system and control system, and signal acquiring system passes to torque sensor and angular speed Sensor real-time data collection information;Control system is used to control testboard to perform action, to the processing of sensor gathered data;According to Rotation inerttia principle, the ratio of torque sensor numerical value and angular speed differential is rotary inertia, is calculated by industrial computer To rotary inertia numerical value.
The course of work:
Step 1 standard bodies demarcate no load test;Torque motor 5 starts, and power transmission shaft 25 is driven by electromagnetic clutch 24 Rotate, power transmission shaft 25 is connected with torsion bar transmission mechanism, and torsion bar transmission mechanism is connected with workbench 1, so as to drive 1 turn of workbench It is dynamic, record multigroup torque sensor 4 and angular-rate sensor 2 data.
The demarcation loading test of step 2 standard bodies;Standard body is placed on the face of workbench 1, standard body both sides are adjacent to workbench 1 Upper lateral fiducial bar 6 and longitudinal datum strip 7;Torque motor 5 starts, and drives workbench 1 to rotate with constant-torque, records multigroup torsion Square sensor 4 and the data of angular-rate sensor 2.Standard body rotary inertia, it is known that and with testee rotary inertia numerical approximation.
Step 3 standard body calibrated and calculateds;Rotary inertia is defined as J=M/ β, and J is the rotary inertia of object around the shaft, β For angular acceleration, wherein angular acceleration β can have angular speed differential to obtain;Known standard body rotary inertia JMark, by demarcate it is unloaded when System rotary inertia J when sensing data calculates standard body zero load0, sensing data calculates standard body loading when being loaded by demarcation When system rotary inertia J1, standard body rotary inertia JMapping=J1-J0, solve calibration coefficient K=JMark/JMapping
Step 4 testee no load tests;According to testee size design special clamping mechanism, clamping mechanism is put It is placed on workbench 1, is adjacent to lateral fiducial bar 6 and longitudinal datum strip 7;Torque motor 5 starts, and workbench is driven with constant-torque 1 rotates, and now records multigroup torque sensor 4 and angular-rate sensor 2 data.
The loading test of step 5 testees;Testee is fitted into the clamping mechanism being positioned on workbench 1, turned round Torque motor 5 starts, and drives workbench 1 to rotate with constant-torque, now records multigroup torque sensor 4 and angular-rate sensor 2 Data.
Step 6 testees rotary inertia calculates;Measured object is calculated by sensing data during testee zero load System rotary inertia J during body zero load0, system turns when testee loading is calculated in sensing data when being loaded by testee Dynamic inertia J1, calculate object rotation inertia J=J1-J0;Testee rotary inertia J is obtained through calibration coefficient amendmentAmendment=K gJ.

Claims (2)

1. a kind of rotary inertia testboard based on torque sensor, including workbench, drive device, electric-control system, its feature It is:Also include torsion bar transmission mechanism;The workbench is rectangular configuration, and workbench is fixed on lateral fiducial bar and longitudinal direction Datum strip, angle is 90 degree between lateral fiducial bar and longitudinal datum strip, and transition disc is located at work table rotation center;It is described Torsion bar transmission mechanism includes angular-rate sensor, thrust ball bearing lid, thrust ball bearing, thrust ball bearing seat, torsion bar sleeve, fixed Position pin, torsion bar, outer sleeve, deep groove ball bearing, insulated cylinder, isolation annulus, torque sensor, shaft coupling, thrust ball bearing lid One end is connected with transition disc, and angular-rate sensor covers positioned at thrust ball bearing, thrust ball bearing lid and torsion bar sleeve connection, is pushed away Power ball bearing housing is fixed in frame, and thrust ball bearing is arranged in thrust ball bearing seat, in torsion bar sleeve and thrust ball bearing Footpath connects, and torsion bar is located in torsion bar sleeve, and is connected with torsion bar sleeve by alignment pin, and torsion bar sleeve is located in outer sleeve, turns round There are a pair of deep groove ball bearings between rod sleeve and outer sleeve, there is insulated cylinder, deep groove ball bearing and frame top between deep groove ball bearing There is isolation annulus between plate, outer sleeve is fixed on frame inside ceiling panel, and torque sensor passes through connection with torsion bar and power transmission shaft respectively Axle device connects;The drive device include torque motor, bearing block, bearing cap, electromagnetic brake, electromagnetic clutch, power transmission shaft, Angular contact ball bearing, support deckle board, drive device are located in frame, and torque motor is fixed on the motor cabinet below electromagnetic clutch Interior, torque motor output shaft is connected with electromagnetic clutch, and electromagnetic brake is below support deckle board, electromagnetic clutch and electromagnetism Brake is connected, and electromagnetic brake is fixed on support deckle board with being driven axis connection, support deckle board and torque sensor mounting seat It is connected, a pair of angular contact ball bearings are arranged on power transmission shaft by bearing block and bearing cap;The electric-control system is adopted including signal Collecting system and control system, signal acquiring system is to torque sensor and angular-rate sensor real-time data collection information;Control System is used to control testboard to perform action, to the processing of sensor gathered data, and rotary inertia number is calculated by industrial computer Value.
2. the rotary inertia testboard according to claim 1 based on torque sensor, it is characterised in that:Torsion bar, transition Disk, electromagnetic clutch and torque motor are co-axially mounted.
CN201510777720.3A 2015-11-13 2015-11-13 A kind of rotary inertia testboard based on torque sensor Active CN105444949B (en)

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CN106500912B (en) * 2016-10-17 2019-05-24 广州汽车集团股份有限公司 Rotational inertia measuring device
CN108731877A (en) * 2017-04-21 2018-11-02 北京航天计量测试技术研究所 A kind of high precision measuring device of large-scale heavy duty rotary inertia
CN109406138B (en) * 2018-12-18 2021-06-29 合肥森曼智能科技有限公司 Mechanism for measuring starting torque and determining torque and rotation angle
CN110595684A (en) * 2019-10-21 2019-12-20 吉林大学 Torque calibration device for linear motor loading
CN111060252B (en) * 2019-12-30 2021-06-08 綦江齿轮传动有限公司 Rotational inertia test method
CN112197961B (en) * 2020-09-22 2022-12-09 湖南欣昌电梯销售服务有限公司 Testing device for testing anti-torque performance of elevator main shaft through inertial impact
CN112697345B (en) * 2020-12-04 2023-04-07 哈尔滨工业大学 Method and device for measuring rigid body inertia tensor

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