CN110044565A - Simple branch Converting frequency & amplitude vibrating mechanism and its operating method - Google Patents

Simple branch Converting frequency & amplitude vibrating mechanism and its operating method Download PDF

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Publication number
CN110044565A
CN110044565A CN201910412712.7A CN201910412712A CN110044565A CN 110044565 A CN110044565 A CN 110044565A CN 201910412712 A CN201910412712 A CN 201910412712A CN 110044565 A CN110044565 A CN 110044565A
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CN
China
Prior art keywords
branch
amplitude
vibrating mechanism
flywheel
frequency
Prior art date
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Pending
Application number
CN201910412712.7A
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Chinese (zh)
Inventor
王昱潭
李萍
李乐凯
刘向南
朱超伟
赵琛
冯朝旭
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Ningxia University
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Ningxia University
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Publication date
Application filed by Ningxia University filed Critical Ningxia University
Priority to CN201910412712.7A priority Critical patent/CN110044565A/en
Publication of CN110044565A publication Critical patent/CN110044565A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D46/00Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D46/00Picking of fruits, vegetables, hops, or the like; Devices for shaking trees or shrubs
    • A01D46/26Devices for shaking trees or shrubs; Fruit catching devices to be used therewith
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The invention discloses simple branch Converting frequency & amplitude vibrating mechanism and its operating methods.The vibrational structure includes five most of, respectively rack and the motor being mounted thereon, swing mechanism, amplitude adjusting mechanism, branch fixed mechanism, present invention is mainly applied to study in agriculture project the biomechanics characteristic of plants shoots, it passes through cleverly Design of Mechanical Structure, so that the rotary motion of motor, pass through transmissions at different levels, it is finally transmitted to test branch, so that branch fixing end does the simple harmonic oscillation of predeterminated frequency and amplitude, and then drive the vibration of entire branch, vibration dampening characteristic of branch is studied with this.

Description

Simple branch Converting frequency & amplitude vibrating mechanism and its operating method
Technical field
It is specially a kind of for studying the machine of branch biomechanics characteristic the present invention relates to biomechanics characteristic research institution Tool structure and its operating method, in particular simple branch Converting frequency & amplitude vibrating mechanism and its operating method.
Background technique
Branch vibration dampening characteristic refers to after a certain position of branch gives a vibrational excitation, motivates certain in distance At one position, decaying on the vibration parameters such as amplitude, vibration frequency, i.e. the decaying of energy.The vibration decaying for studying branch is special Property, it can be the parameter designing based theoretical of the oscillatory type picking machine of certain gourd, fruit and vegetables, for setting for oscillatory type picking machine Meter provides detailed data information.
Currently, the development of vibrating mechanism is classified clear and very fine in purposes, different used primarily directed to various Different mechanisms is designed on way, such as testing department (preparation company, medical institutions, health and epidemic prevention department) and medical colleges and schools With formulatory agents or by micro oscillator that reagent and sample mix, the oscillator for being used for detection of agricultural products, chemical experiment Test tube is centrifuged oscillation device etc., these equipment almost contribute to medicine, chemistry and building machinery field.
The shortcomings that existing vibrating mechanism: (1) application range is narrow.Existing vibrating mechanism is mainly applied in medical treatment, preparation machine The stirring of structure and the upper cement of building and the stirring of animal husbandry feed, there are no occur applying studying branch in agriculture project The vibrating mechanism of vibration dampening characteristic;(2) existing vibrating mechanism, structure is complicated, and function is limited;(3) existing bobbing machine Structure uses linear motor more, at high cost.
Currently, there are no the mechanisms dedicated for studying branch vibration dampening characteristic in the market, it is also similar without finding Implementation.
In consideration of it, the invention proposes a kind of for studying the mechanical structure of branch biomechanics characteristic, for studying branch The vibration dampening characteristic of item gives a vibrational excitation in some position of branch, by other equipment such as high speed camera, visit Rope the other positions of branch vibratory response situation, especially when change vibration source vibration frequency, amplitude when, the vibration of branch Whether attenuation characteristic can change.To for instructing the design of certain agricultural machinery, such as: oscillatory type medlar-picking machine, vibration Formula blueberry picking machine etc..
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of simple Converting frequency & amplitude branch vibrating mechanism and its operating method, with Other kinematics parameters test equipments together, are used to study the biomechanics characteristic of various branches in agriculture project.
The technical solution adopted by the present invention to solve the technical problems are as follows:
Simple branch Converting frequency & amplitude vibrating mechanism is adjusted including rack and the motor being mounted thereon, swing mechanism, amplitude Mechanism, branch fixed mechanism, wherein
The swing mechanism includes the flywheel and annular slide track being installed in rack, and the flywheel is connect with the motor, It is rotatably equipped with flywheel rotary steering groove thereon, rotation swing rod, the rotation swing rod are installed in the flywheel rotary steering groove One end is connected with column sliding block, and the column sliding block is set in annular slide track, and the other end is connect with the amplitude adjusting mechanism;
The amplitude adjusting mechanism include swing rod rotation hollow pin and be installed on rotation swing rod end amplitude adjustment sheet, institute Swing rod rotation hollow pin is stated rotatably to be installed in rack by rotating swing rod pedestal;
The branch fixed mechanism is installed on the downside of amplitude adjustment sheet, including branch fixator and branch locking nut.
As an improvement of the above technical solution, the motor is installed on frame underside, is connected with frequency converter, for driving The flywheel rotation.
As an improvement of the above technical solution, it is connected between the flywheel and motor by thrust bearing.
As an improvement of the above technical solution, rotary shaft is provided between the flywheel rotary steering groove and the flywheel It holds, is provided with rolling bearing between the column sliding block and the annular slide track.
As an improvement of the above technical solution, the amplitude adjusting mechanism includes the amplitude being used cooperatively with amplitude adjustment sheet Adjustment pin offers multiple amplitude location holes on the amplitude adjustment sheet, and each amplitude location hole represents corresponding amplitude.
As an improvement of the above technical solution, amplitude adjustment sheet front end is provided with branch fixator fixation hole, described Branch fixator is annular slice branch fixator, is fixed on amplitude adjustment sheet by fastening bolt and fastening nut.
As an improvement of the above technical solution, the branch locking nut inner wall bottom is provided with protrusion, for compressing State the clamp clip of annular slice branch fixator.
Invention also provides a kind of operating method of simple branch Converting frequency & amplitude vibrating mechanism, this method is applied to upper In the simple branch Converting frequency & amplitude vibrating mechanism of any one stated comprising
Firstly, determining the amplitude of vibration source, after adjusting amplitude adjustment sheet to specified position, consolidated by amplitude adjustment pin It is fixed;
Secondly, screwing off branch locking nut, branch to be tested is inserted into branch fixator, and screw branch locking screw Mother completes the fixation for treating experiment branch;
Finally, powering on, frequency converter is adjusted to preset frequency, the vibration dampening characteristic of branch can be studied.
Bring beneficial effect of the present invention has:
Present invention is mainly applied to study in agriculture project the biomechanics characteristic of plants shoots.By cleverly Design of Mechanical Structure, so that the rotary motion of motor is finally transmitted to test branch, so that branch is fixed by transmissions at different levels The simple harmonic oscillation of predeterminated frequency and amplitude is done at end, and then drives the vibration of entire branch, and it is special to carry out the decaying of the vibration to branch with this Property is studied.
Compared to existing vibrating mechanism, the present invention has the following advantages:
1, it has wide range of applications.Vibrating mechanism of the invention, can grinding to the branch biomechanics characteristic in agriculture project Study carefully.Existing vibrating mechanism is mainly applied in medical industry, building trade and livestock, and the present invention can be applied not only to Above-mentioned industry also solves the problem that branch vibration dampening characteristic is studied in agriculture project;
2, manufacturing cost is low.Existing vibrating mechanism uses linear motor more, at high cost, and the invention uses exchange Frequency control motor, price is low compared with linear motor, and it is easy to maintenance, durability is good;
3, easy to operate simple.The present invention is easy to operate simple in the adjusting of the fixation of branch, amplitude and frequency.
Detailed description of the invention
With reference to the accompanying drawing and specific embodiment the invention will be further described,
Attached drawing 1 is the structure top view of vibrating mechanism of the present invention;
Attached drawing 2 is the structural side view of vibrating mechanism of the present invention;
Attached drawing 3 is the structure sectional view of vibrating mechanism of the present invention;
Attached drawing 4 is the perspective view of vibrating mechanism of the present invention;
Each label counter structure in figure are as follows:
1 rack;2 motors;31 flywheels;32 annular slide tracks;33 flywheel rotary steering grooves;34 rotation swing rods;35 column sliding blocks; 41 swing rods rotate hollow pin;42 amplitude adjustment sheets;43 amplitude adjustment pins;44 rotation swing rod pedestals;51 branch fixators;52 branches lock Tight nut.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.Specific embodiments of the present invention described in attached drawing are only Illustrate use of the present invention, is not strictly drawn in actual size and ratio.Therefore, the attached drawing in the present invention should not be construed as to this Any restrictions of invention.Protection scope of the present invention is defined by the claims.
For the sake of the concise and prominent present invention, the details particularly relevant with the present invention is illustrated only in some drawings.It answers Work as understanding, the presence of other details related to the present invention is not precluded in this diagramatic way.Therefore, attached drawing of the invention is not Intention limits the scope of the invention.
Embodiment 1
Referring to Fig.1~4, simple branch Converting frequency & amplitude vibrating mechanism including rack 1 and the motor being mounted thereon 2, is swung Mechanism, amplitude adjusting mechanism, branch fixed mechanism, wherein
Motor 2 is installed on 1 downside of rack, is connected with frequency converter, for driving flywheel 31 to rotate, flywheel 31 and motor 2 Between pass through thrust bearing connect.
Swing mechanism includes the flywheel 31 and annular slide track 32 being installed in rack 1, and flywheel 31 is connect with motor 2, thereon It is rotatably equipped with flywheel rotary steering groove 33, rotation swing rod 34 is installed in flywheel rotary steering groove 33, rotates 34 one end of swing rod It is connected with column sliding block 35, column sliding block 35 is set in annular slide track 32, and the other end is connect with amplitude adjusting mechanism.To reduce Frictional resistance in motion process, is provided with swivel bearing between flywheel rotary steering groove 33 and flywheel 31, column sliding block 35 with Rolling bearing is provided between annular slide track 32.
Swing mechanism is the slider-crank mechanism to develop, to overcome slider-crank mechanism to occur dead angle in the process of running This disadvantage replaces crank with flywheel 31 in the present invention, when operation is to dead-centre position, breaks through extremely by the inertia of flywheel 31 Point.
For the amplitude for reducing vibrating mechanism, the present invention utilizes lever principle, the large-amplitude oscillation of sliding block is reduced to annular The small amplitude motion of sheet branch fixator 51.
Amplitude adjusting mechanism include swing rod rotation hollow pin 41 and be installed on rotation 34 end of swing rod amplitude adjustment sheet 42, Swing rod rotation hollow pin 41 is rotatably installed in rack 1 by rotating swing rod pedestal 44.Swing rod rotates hollow pin 41 around being fixed on Rotation swing rod pedestal 44 in plate rack 1 rotates, and is the rotation center of rectangle rotation swing rod 34, while being also that lever principle is big The fulcrum of amplitude reduction amplitude.
Amplitude adjusting mechanism includes the amplitude adjustment pin 43 being used cooperatively with amplitude adjustment sheet 42, is opened on amplitude adjustment sheet 42 Equipped with multiple amplitude location holes, each amplitude location hole represents corresponding amplitude.When needing to adjust the amplitude of branch, only need Amplitude adjustment pin 43 is pulled up, adjusts specified amplitude location hole to specified position.
Branch fixed mechanism is installed on 42 downside of amplitude adjustment sheet, including branch fixator 51 and branch locking nut 52. 42 front end of amplitude adjustment sheet is provided with 51 fixation hole of branch fixator, and branch fixator 51 is annular slice branch fixator 51, It is fixed on amplitude adjustment sheet 42 by fastening bolt and fastening nut.
When work, first branch is inserted into annular slice branch fixator 51, then rotates branch locking nut 52 Branch is fastened on branch fixator 51.Wherein, branch fixator 51 is distributed circumferentially by three clamp clips in 120 °, is being revolved During tight branch locking nut 52,52 inner wall bottom of branch locking nut is provided with protrusion, for compressing annular slice branch The clamp clip of fixator 51.
The main improvement of the present apparatus is:
(1) frequency is adjustable.The invention is mainly used for grinding the biomechanics characteristic of plants shoots in agriculture project Study carefully, the vibration dampening characteristic of various plants shoots is explored, and then provides theory to the design of related agricultural machinery and set Meter and relevant data information.In the present invention, the adjusting of vibration frequency rely primarily on frequency converter realization, by adjust frequency converter into And control the vibration frequency of branch;
(2) adjustable amplitude section.The amplitude attenuation of research branch is an important content of branch vibration decaying.This hair It is bright to design a kind of easy amplitude adjusting mechanism, it is simple to operate;
(3) amplitude is greatly lowered in lever principle.The present invention utilizes lever principle, and the large amplitude of column sliding block 35 is converted For the small amplitude of annular slice branch fixator 51, to meet in branch vibration experiment the requirement of ' frequency low-amplitude ';
(4) cyclic annular branch fixed mechanism.For the fixation for realizing branch, the present embodiment designs a fixed machine of cyclic annular branch Structure realizes the fastening to branch by rotation branch locking nut 52, easy to operate.
Embodiment 2
A kind of operating method of simple branch Converting frequency & amplitude vibrating mechanism, this method are applied to the simple branch in embodiment 1 In Converting frequency & amplitude vibrating mechanism comprising
Firstly, determine the amplitude of vibration source, it, will by amplitude adjustment pin 43 after adjusting amplitude adjustment sheet 42 to specified position It is fixed;
Secondly, screwing off branch locking nut 52, branch to be tested is inserted into sheet branch fixator 51, and screw branch Locking nut 52 completes the fixation for treating experiment branch;
Finally, powering on, frequency converter is adjusted to preset frequency, the vibration dampening characteristic of branch can be studied.
Specific embodiments of the present invention are described in detail above, but content is only presently preferred embodiments of the present invention, It should not be considered as limiting the scope of the invention.Any changes and modifications in accordance with the scope of the present application, It should still be within the scope of the patent of the present invention.

Claims (8)

1. simple branch Converting frequency & amplitude vibrating mechanism, it is characterised in that: including rack and the motor being mounted thereon, oscillating machine Structure, amplitude adjusting mechanism, branch fixed mechanism, wherein
The swing mechanism includes the flywheel and annular slide track being installed in rack, and the flywheel is connect with the motor, thereon It is rotatably equipped with flywheel rotary steering groove, rotation swing rod, described rotation swing rod one end are installed in the flywheel rotary steering groove It is connected with column sliding block, the column sliding block is set in annular slide track, and the other end is connect with the amplitude adjusting mechanism;
The amplitude adjusting mechanism include swing rod rotation hollow pin and be installed on rotation swing rod end amplitude adjustment sheet, the pendulum Bar rotation hollow pin is rotatably installed in rack by rotating swing rod pedestal;
The branch fixed mechanism is installed on the downside of amplitude adjustment sheet, including branch fixator and branch locking nut.
2. simple branch Converting frequency & amplitude vibrating mechanism according to claim 1, it is characterised in that: the motor is installed on machine On the downside of frame, it is connected with frequency converter, for driving the flywheel to rotate.
3. simple branch Converting frequency & amplitude vibrating mechanism according to claim 2, it is characterised in that: the flywheel and motor it Between pass through thrust bearing connect.
4. simple branch Converting frequency & amplitude vibrating mechanism according to claim 1, it is characterised in that: the flywheel rotary steering It is provided with swivel bearing between slot and the flywheel, is provided with rolling bearing between the column sliding block and the annular slide track.
5. simple branch Converting frequency & amplitude vibrating mechanism according to claim 1, it is characterised in that: the amplitude adjusting mechanism Including the amplitude adjustment pin being used cooperatively with amplitude adjustment sheet, multiple amplitude location holes are offered on the amplitude adjustment sheet, often A amplitude location hole represents corresponding amplitude.
6. simple branch Converting frequency & amplitude vibrating mechanism according to claim 5, it is characterised in that: before the amplitude adjustment sheet End is provided with branch fixator fixation hole, and the branch fixator is annular slice branch fixator, by fastening bolt and Fastening nut is fixed on amplitude adjustment sheet.
7. simple branch Converting frequency & amplitude vibrating mechanism according to claim 6, it is characterised in that: the branch locking nut Inner wall bottom is provided with protrusion, for compressing the clamp clip of the annular slice branch fixator.
8. the operating method of simple branch Converting frequency & amplitude vibrating mechanism, it is characterised in that: this method is applied to claim 1~7 In the simple branch Converting frequency & amplitude vibrating mechanism comprising
Firstly, determining the amplitude of vibration source, after adjusting amplitude adjustment sheet to specified position, it is fixed by amplitude adjustment pin;
Secondly, screwing off branch locking nut, branch to be tested is inserted into branch fixator, and screw branch locking nut, it is complete The fixation of branch to be tested in pairs;
Finally, powering on, frequency converter is adjusted to preset frequency, the vibration dampening characteristic of branch can be studied.
CN201910412712.7A 2019-05-17 2019-05-17 Simple branch Converting frequency & amplitude vibrating mechanism and its operating method Pending CN110044565A (en)

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Publication number Priority date Publication date Assignee Title
CN111066485A (en) * 2019-12-31 2020-04-28 宁夏农林科学院枸杞工程技术研究所 Eccentric vibrating device of hydraulic motor control for picking medlar
CN111373932A (en) * 2020-02-28 2020-07-07 宁夏大学 Reciprocating branch frequency-conversion amplitude-variation vibration mechanism and operation method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111066485A (en) * 2019-12-31 2020-04-28 宁夏农林科学院枸杞工程技术研究所 Eccentric vibrating device of hydraulic motor control for picking medlar
CN111373932A (en) * 2020-02-28 2020-07-07 宁夏大学 Reciprocating branch frequency-conversion amplitude-variation vibration mechanism and operation method thereof

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