CN101533580A - Dynamic balancing test device of rigid double-disk rotor - Google Patents

Dynamic balancing test device of rigid double-disk rotor Download PDF

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Publication number
CN101533580A
CN101533580A CN200910071823A CN200910071823A CN101533580A CN 101533580 A CN101533580 A CN 101533580A CN 200910071823 A CN200910071823 A CN 200910071823A CN 200910071823 A CN200910071823 A CN 200910071823A CN 101533580 A CN101533580 A CN 101533580A
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China
Prior art keywords
elastic support
displacement sensor
motor
rotating shaft
photoelectric displacement
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Application number
CN200910071823A
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Chinese (zh)
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CN101533580B (en
Inventor
赵彤
严勇
陈奇
樊久铭
李冀龙
孙毅
刘文晶
吴晓蓉
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CN2009100718232A priority Critical patent/CN101533580B/en
Publication of CN101533580A publication Critical patent/CN101533580A/en
Application granted granted Critical
Publication of CN101533580B publication Critical patent/CN101533580B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a dynamic balancing test device of a rigid double-disk rotor, which is characterized in that a bearing block is fixed on an elastic support; the lower end of a supporting arm is fixedly connected with the elastic support; a photoelectric displacement sensor is installed on the supporting arm and the elastic support, the bearing block, the supporting arm and the photoelectric displacement sensor combine an overall supporting block jointly; a rotating shaft is installed on the elastic support via the bearing block; one end of the rotating shaft is connected with a motor by a coupling; the motor is installed on a motor base; symmetrical left and right balancing disks are arranged on the rotating shaft; a transparent shield is capped outside the left and right balancing disks; the motor base, the transparent shield and the elastic support are bolted on a base; the lower end of the base is provided with a shock strut. The elastic support, the bearing block, the supporting arm and the photoelectric displacement sensor of the invention combine an overall supporting block jointly, thus shortening the distance between the photoelectric displacement sensor and the test point, contributing to good connection rigidity, reducing vibration disturbance and increasing measuring accuracy.

Description

Dynamic balancing test device of rigid double-disk rotor
Technical field
The present invention relates to a kind of experimental provision that rotating mechanism is carried out the transient equilibrium operation, is a kind of dynamic balancing test device of rigid double-disk rotor specifically, and this device is equipped with two balancing frames on a fixed rotating shaft.
Background technology
At present, the equipment of many high-speed rotation in engineering, its rotor are not desirable symmetrical rigid bodies, exist error when Bearing Installation yet.So can produce unbalanced inertial force during work, cause very big bearing constraining force.Existing large and small type experiment of dynamic balancing device category is a lot, but general complex structure, inconvenient operation, the dynamic balancing test device that is fit to college experiment teaching is actually rare.There are a kind of four disk rigid rotator experiment of dynamic balancing equipment at present, can supply student's independent operation in education experiment.But it is too complete that its weak point is the dedicated processes program, also improved cost thus, and the student lacks the space of thinking independently in the experimental implementation process.For these reasons, this develops the rigid rotator dynamic balancing test device is exactly on the basis with reference to existing same category of device, and it is compact more to design structure, cost is cheaper, clear physics conception, directly perceived, it is convenient to adjust use, is more suitable for the experimental provision that college teaching uses.
Summary of the invention
The objective of the invention is to overcome the weak point that exists in the above-mentioned technology, a kind of compact conformation is provided, reasonable in design, composite behaviour is strong, is convenient to install the dynamic balancing test device of rigid double-disk rotor of multiple test accessories.
In order to achieve the above object, the technical solution used in the present invention is: bearing seat is fixed on the elastic support, the support arm lower end part is fixedlyed connected with elastic support, photoelectric displacement sensor is installed on the support arm, by elastic support, bearing seat, support arm and photoelectric displacement sensor common combination bearing in aggregates.Rotating shaft is installed on the elastic support by bearing seat, rotating shaft one end is connected with motor by shaft coupling, motor mounting is on motor cabinet, the left and right balancing frame of symmetry is housed in the rotating shaft, the outside spiral-lock of left and right balancing frame has transparent shroud, motor cabinet, transparent shroud and elastic support are by being bolted on the base, and the base lower end is equipped with shock bracket.
Advantage of the present invention is:
Because elastic support, bearing seat, support arm and photoelectric displacement sensor common combination bearing in aggregates have shortened the distance between photoelectric displacement sensor and the test point, connect good rigidly, reduced vibration interference, improved measuring accuracy.The signal output of photoelectric displacement sensor is stronger, has solved the too small problem of support displacement semaphore.Upper/lower terminal at elastic support is respectively equipped with a pair of mounting groove, is convenient to install multiple test accessories.This device can carry out experiment of dynamic balancing by external oscillograph, the student shows according to oscillographic reading and loads adjustment, can see intuitively that the vibration of supports displacement reduces with progressively near dynamically balanced process, clear physics conception not only, and reduced cost.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is that the A of Fig. 1 is to synoptic diagram;
Fig. 4 is an elastic support structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
By Fig. 1-Fig. 4 as can be known, bearing seat 11 is fixed on the elastic support 6, support arm 14 lower end parts are fixedlyed connected with elastic support 6, photoelectric displacement sensor 15 is installed on the support arm 14, by elastic support 6, bearing seat 11, support arm 14 and photoelectric displacement sensor 15 common combinations bearing in aggregates, rotating shaft 7 is installed on the elastic support 6 by bearing seat 11, rotating shaft 7 one ends are connected with motor 1 by shaft coupling 3, motor 1 is installed on the motor cabinet 2, the left side of symmetry is housed in the rotating shaft 7, right balancing frame 8,10, a left side, right balancing frame 8,10 outside spiral-lock has transparent shroud 9, motor cabinet 2, transparent shroud 9 and elastic support 6 are by being bolted on the base 13, and base 13 lower ends are equipped with shock bracket 12.
The upper/lower terminal of described elastic support 6 is respectively equipped with a pair of mounting groove 16.
Bearing seat 11 of the present invention is fixed on the elastic support 6, support arm 14 lower end parts are fixedlyed connected with elastic support 6, photoelectric displacement sensor 15 is installed on the support arm 14, constitutes a whole bearing jointly by elastic support 6, bearing seat 11, support arm 14 and photoelectric displacement sensor 15.Rotating shaft 7 is installed on the elastic support 6 by bearing seat 11, rotating shaft 7 is joined by shaft coupling 3 and motor 1 output shaft, zero point CD 4 by screw retention on shaft coupling 3, have the narrow groove of a printing opacity on it, zero point, CD 4 edge was inserted in the fluting light idol that is provided with on the optoelectronic switch 5, optoelectronic switch 5 by screw retention on mounting groove 16 near elastic support 6 upper ends of motor 1.The left balancing frame 8 of symmetry is fixed in the rotating shaft 7 by cooperating (or wringing fit) firmly with right balancing frame 10, at outside spiral-lock one transparent shroud 9 of left and right balancing frame 8,10.Have twice ring-type T-shape groove on left and right balancing frame 8,10 opposing end faces, be carved with 360 ° of reticules on the edge of end face, align with narrow groove on the zero point CD 4 its zero point respectively.Motor 1 is by being bolted on the motor cabinet 2, and motor cabinet 2, transparent shroud 9 and elastic support 6 are by the upper end that is bolted to base 13, and shock bracket 12 is by being bolted to the lower end of base 13.
By Fig. 3, shown in Figure 4, there are 4 screws the upper end of elastic support 6, is used for fixing bearing seat 11.The upper/lower terminal of elastic support 6 is respectively equipped with a pair of mounting groove 16, support arm 14 is fixed on the mounting groove 16 of elastic support 6 lower ends, photoelectric displacement sensor 15 1 ends by screw retention on support arm 14, the other end by screw retention on the mounting groove 16 of elastic support 6 upper ends.In the middle of the lower end of elastic support 6 through hole is arranged, be used for elastic support 6 is fixed on base 13.
Its principle of work of brief description.
Motor 1 is a dc permanent magnet motor.By regulating the voltage of motor, allow motor 1 obtain certain rotating speed, the output shaft of motor 1 drives rotating shaft 7 by shaft coupling 3 and rotates with motor 1.Zero point, CD 4 was fixedly mounted on the shaft coupling 3, zero point, CD 4 was a plastic disc of opening a narrow groove, optoelectronic switch 5 is a pair of luminous and receive the photoelectric tube of light, zero point, CD 4 whenever turned around, optoelectronic switch 5 sends narrow pulse electrical signals one time, in the electric signal time domain curve (transverse axis is the time, and the longitudinal axis is the electric signal voltage magnitude) of optoelectronic switch 5 outputs, a plurality of pulse electrical signals will appear like this.Can obtain the rotating speed of motor 1 by electric signal time domain tracing analysis to optoelectronic switch 5 outputs.With the instantaneous zero degree point that is decided to be left balancing frame 8 and right balancing frame 10 of pulse electrical signal, so just left balancing frame 8 and right balancing frame 10 360 degree have been divided into.In rotating shaft 7 and left and right balancing frame 8,10 rotary course together, because mass centre may be at the first-class a variety of causes of the geometric center of rotating shaft 7, total is rotated the effect that just is subjected to inertial force, and makes structure produce vibration.Again because the architectural characteristic of elastic support 6 is that vertical direction rigidity is big, horizontal direction rigidity relatively a little less than, so elastic support 6 just has bigger swing displacement in the horizontal direction.Elastic support 6 swing displacement is in the horizontal direction recorded by photoelectric displacement sensor 15.Prime amplifier by photoelectric displacement sensor 15 becomes electric signal to light signal, the electric signal of photoelectric tube and two elastic supports 6 all inputs to oscillograph, on the oscillograph screen, post the sign of angle, so just can read the phase place of electric signal voltage magnitude He its peak value relative zero of two elastic supports 6 by oscillograph.The amplitude of electric signal voltage is directly proportional with the swing displacement of the horizontal direction of elastic support 6, can obtain the swing displacement of two elastic supports 6 (i.e. two bearings) horizontal direction.
The rigid double-disk rotor experiment of dynamic balancing adopts two plane influence coefficient methods, by increasing mass separately at left balancing frame 8 and right balancing frame 10, record the influence coefficient of left balancing frame 8 and 10 pairs of two bearings of right balancing frame, application computer programs is tried to achieve the size and the angle of left balancing frame 8 and right balancing frame 10 required correction up quality, the correction mass for preparing is added in a left side respectively by its angle, right balancing frame 8, on 10, barycenter is adjusted to as far as possible on the geometric center of rotating shaft 7 by correction mass, rotating shaft 7 suffered inertial force just become very little like this, the swing displacement of the horizontal direction of two bearings goes to zero, and rigid double-disk rotor reaches transient equilibrium.

Claims (2)

1. dynamic balancing test device of rigid double-disk rotor, comprise bearing seat, photoelectric displacement sensor, it is characterized in that: bearing seat (11) is fixed on the elastic support (6), support arm (14) lower end part is fixedlyed connected with elastic support (6), photoelectric displacement sensor (15) is installed on the support arm (14), by elastic support (6), bearing seat (11), support arm (14) and photoelectric displacement sensor (15) common combination bearing in aggregates, rotating shaft (7) is installed on the elastic support (6) by bearing seat (11), rotating shaft (7) one ends are connected with motor (1) by shaft coupling (3), motor (1) is installed on the motor cabinet (2), the left side of symmetry is housed in the rotating shaft (7), right balancing frame (8), (10), a left side, right balancing frame (8), (10) outside spiral-lock has transparent shroud (9), motor cabinet (2), transparent shroud (9) and elastic support (6) are by being bolted on the base (13), and base (13) lower end is equipped with shock bracket (12).
2. dynamic balancing test device of rigid double-disk rotor according to claim 1 is characterized in that: the upper/lower terminal of described elastic support (6) is respectively equipped with a pair of mounting groove (16).
CN2009100718232A 2009-04-17 2009-04-17 Dynamic balancing test device of rigid double-disk rotor Expired - Fee Related CN101533580B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100718232A CN101533580B (en) 2009-04-17 2009-04-17 Dynamic balancing test device of rigid double-disk rotor

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Application Number Priority Date Filing Date Title
CN2009100718232A CN101533580B (en) 2009-04-17 2009-04-17 Dynamic balancing test device of rigid double-disk rotor

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CN101533580A true CN101533580A (en) 2009-09-16
CN101533580B CN101533580B (en) 2011-05-25

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384818A (en) * 2010-08-30 2012-03-21 上海瑞威机电设备有限公司 High-speed horizontal dynamic balancing machine
CN103413486A (en) * 2013-06-24 2013-11-27 东华大学 Rigid-rotating-body soft unilateral supporting dynamic balancing machine
CN103606334A (en) * 2013-12-02 2014-02-26 雷康 Mechanical balance experiment instrument
CN107219040A (en) * 2017-07-14 2017-09-29 华能澜沧江水电股份有限公司 A kind of dynamic poise device for being used to simulate vertical hydropower generator
CN110146280A (en) * 2019-06-06 2019-08-20 西安交通大学 A kind of rotating machinery dynamic mechanical measurement experimental provision and experimental method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384818A (en) * 2010-08-30 2012-03-21 上海瑞威机电设备有限公司 High-speed horizontal dynamic balancing machine
CN103413486A (en) * 2013-06-24 2013-11-27 东华大学 Rigid-rotating-body soft unilateral supporting dynamic balancing machine
CN103413486B (en) * 2013-06-24 2016-01-13 东华大学 The soft monolateral support dynamic balancing machine of a kind of rigid rotator
CN103606334A (en) * 2013-12-02 2014-02-26 雷康 Mechanical balance experiment instrument
CN103606334B (en) * 2013-12-02 2019-05-10 新昌县屹然智能科技有限公司 Mechanical balance experiment instrument
CN107219040A (en) * 2017-07-14 2017-09-29 华能澜沧江水电股份有限公司 A kind of dynamic poise device for being used to simulate vertical hydropower generator
CN110146280A (en) * 2019-06-06 2019-08-20 西安交通大学 A kind of rotating machinery dynamic mechanical measurement experimental provision and experimental method
CN110146280B (en) * 2019-06-06 2024-03-12 西安交通大学 Experimental device and experimental method for measuring dynamic mechanical quantity of rotary machine

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Granted publication date: 20110525

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