CN103447232B - All-wheel-drive non-amplitude vibrating screen mechanism - Google Patents
All-wheel-drive non-amplitude vibrating screen mechanism Download PDFInfo
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- CN103447232B CN103447232B CN201310315260.3A CN201310315260A CN103447232B CN 103447232 B CN103447232 B CN 103447232B CN 201310315260 A CN201310315260 A CN 201310315260A CN 103447232 B CN103447232 B CN 103447232B
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Abstract
An all-wheel-drive non-amplitude vibrating screen mechanism comprises a vibrating screen and a vibrating system. The vibrating system comprises a pair of front eccentric wheels, a pair of rear eccentric wheels, a pair of front multi-stage connecting rods and a pair of rear multi-stage connecting rods. The front eccentric wheels and the rear eccentric wheels are driven by a transmission mechanism, and are connected with a frame rotatably; the eccentric distance of the front eccentric wheels is large than that of the rear eccentric wheels. The front multi-stage connecting rods are in three-segment connecting rod structure, and the rear multi-stage connecting rods are in two-segment connecting rod structure. According to the all-wheel-drive non-amplitude vibrating screen mechanism, since the front multi-stage connecting rods adopts the three-segment connecting rod structure, the rear multi-stage connecting rods adopts the two-segment connecting rod structure, by means of driving by the eccentric wheels and interactive effect of structures of the vibrating screen and the like, so that the moving track of the front end of the vibrating screen is in a shape of a transverse 8, the moving track of the rear end of the vibrating screen is elliptical, vibrating directions of the entire screen surface are increased, and better screening effect is achieved.
Description
Technical field
The present invention relates to a kind of vibratory sieve mechanism, particularly relate to the upper non-continuous vibration screening mechanism of 4 wheel driven used of non-constant amplitude sorting purpose sieve of a kind of applicable agricultural material, the use of mining industry sorting purpose occasion.
Background technology
Agricultural material needs stem stalk, residual cauline leaf, immature fruit, soil block, hack earth etc. to be separated with mellow fruit etc. after harvesting.In existing sorting screen, vibratory sieve mechanism only works usually under a kind of amplitude condition, and the movement locus at each position of vibratory sieve is identical, and the amplitude at each position is also identical with oscillation intensity.Because the material ratio on vibratory sieve feeding end compass screen surface is more concentrated, the sieve back segment of compass screen surface has just been arrived at material, material bed thicker in prevent material collision from scattering, the amplitude of oscillation of compass screen surface should be smaller, when material arrives the sieve leading portion of compass screen surface, material fully scatter, material bed thinner, in order to improve screening effeciency and screening effect, the amplitude of oscillation of compass screen surface should be larger.Existing sorting screen can not meet this demand, the skewness of material on whole compass screen surface, so directly affects disposal ability and the screening efficiency of vibratory sieve, cause cleaning loss excessive, loss late is high, and efficiency is low, need carry out secondary manually clean toward contact, there is the contradiction between separating effect and productivity ratio when cleaning operation, improve and clean effect often to reduce field productivity ratio for cost.
The patent No. be 200410021345.1 patent of invention disclose a kind of amplitude descending screening and vibratory sieve, belong to vibration screening machinery field, in order to improve dual-axis vibration sieve disposal ability and screening efficiency design.Be the feeding end and the discharge end that two of vibratory sieve vibrators are separately positioned on sieve box of vibrating, the quality of feeding end vibrator eccentric block is greater than the quality of discharge end vibrator eccentric block; The centre-to-centre spacing of two vibrators is more than or equal to 1/4th of screen box length.During vibratory sieve work, its amplitude is oval, the formal distribution that the amplitude of whole screen box tapers off from feeding end to discharge end.The movement locus of this equipment whole vibratory sieve involving vibrations sieve feed end and discharge end is all disciform, although amplitude is different, but does not reach optimal screening effect.This device structure is complicated, manufactures production cost also high.
Summary of the invention
The non-continuous vibration screening mechanism of 4 wheel driven that the present invention is directed to defect and the deficiency of prior art, provide a kind of cleaning loss little, cleaning efficiency is high, easy to operate, the simple sorting screen of structure uses.
Technical scheme of the present invention is: the non-continuous vibration screening mechanism of a kind of 4 wheel driven, involving vibrations sieve and vibrating mechanism, described vibrating mechanism comprises a pair pre-eccentric wheel, eccentric wheel after a pair, multistage connecting rod and a pair rear multistage connecting rod before a pair, described pre-eccentric wheel and rear eccentric wheel are driven by transmission mechanism, pre-eccentric wheel and rear eccentric wheel are connected with rotary type between frame, the eccentric throw of described pre-eccentric wheel is greater than rear eccentric eccentric throw, described front multistage connecting rod is three cascade connection rod structures, comprise front suspension rod, front tension bar and front rod, described front suspension rod and frame top hinged, hinged between described front suspension rod and front tension bar, hinged between described front tension bar and front rod, described front rod and pre-eccentric are coupling between taking turns, described front rod and vibratory sieve front end and discharging opening one end are coupling, described rear multistage connecting rod is two-stage connecting rod structure, comprise the rear suspension bar and back link that are hinged, described rear suspension bar and frame top hinged, described back link and rear camshaft connect, described back link and vibratory sieve rear end and charging aperture one end are coupling.
Preferably, described transmission mechanism drives the rotating speed of pre-eccentric wheel to be greater than rear eccentric rotating speed.
Preferably.The described rotating speed of pre-eccentric wheel and the ratio of rear eccentric rotating speed are definite value.
Preferably, pre-eccentric wheel is 2:1 with the ratio of rear eccentric rotating speed.
The invention has the beneficial effects as follows:
1, the non-continuous vibration screening mechanism of 4 wheel driven of the present invention, eccentric wheel is used to add grade connecting rod to drive the technical scheme of shaker vibration, and the progression of front and back connecting rod is inconsistent, the direction of vibration of whole compass screen surface is increased, compass screen surface not only can be moved back and forth by the vertical direction, also can move back and forth in the horizontal direction, because front rod adopts three cascade connection rod structures, rear connecting rod adopts two-stage connecting rod structure, add eccentric driving, add the interaction between these structures of sieve nest itself, the movement locus of vibratory sieve front end can be made in " ∞ " shape, the movement locus ovalize of rear end, thus make the direction of vibration diversification of compass screen surface, better screening effect can be reached.
2, technical solution of the present invention is in order to improve screening effeciency and screening effect, save unnecessary energy consumption simultaneously, so drive sieve to swing with an eccentric stiffener respectively at the back segment of sieve and leading portion, to make before and after sieve amplitude and frequency inconsistent, the sieve back segment of compass screen surface has just been arrived at material, material bed thicker in prevent material collision from scattering, the amplitude of oscillation of compass screen surface is smaller, when material arrives the sieve leading portion of compass screen surface, material fully scatter, material bed thinner, in order to improve screening effeciency and screening effect, the amplitude of oscillation of compass screen surface is larger, cleaning loss is little, cleaning efficiency is high.
Accompanying drawing explanation
Accompanying drawing 1 is installed on the structural representation in sorting screen for the specific embodiment of the invention;
Accompanying drawing 2 is the side-looking structural representation of the specific embodiment of the invention.
Detailed description of the invention
In order to understand structure of the present invention, feature and other object further, the appended preferred embodiment of existing combination is described in detail as follows:
Embodiments of the invention detailed description of the invention is as follows:
As shown in Figures 1 and 2: the non-continuous vibration screening mechanism of a kind of 4 wheel driven, involving vibrations sieve 10 and vibrating mechanism, described vibrating mechanism comprises a pair pre-eccentric wheel 8, eccentric wheel 3 after a pair, multistage connecting rod after multistage connecting rod and a pair before a pair, described pre-eccentric wheel 8 and rear eccentric wheel 3 are driven by transmission mechanism 11, pre-eccentric wheel 8 and between rear eccentric wheel 3 with frame 4 rotary type is connected, the eccentric throw of described pre-eccentric wheel 8 is greater than the eccentric throw of rear eccentric wheel 3 and transmission mechanism 11 pairs of pre-eccentrics wheels 8 and afterwards eccentric wheel 3 carry out 2:1 surely than driving.Described front multistage connecting rod is three cascade connection rod structures, comprise front suspension rod 5, front tension bar 6 and front rod 7, described front suspension rod 5 is hinged with frame 4 top, hinged between described front suspension rod 5 and front tension bar 6, hinged between described front tension bar 6 and front rod 7, described front rod 7 and pre-eccentric are coupling between taking turns 8, described front rod 7 is coupling with vibratory sieve 10 front end and discharging opening one end, described rear multistage connecting rod is two-stage connecting rod structure, comprise the rear suspension bar 1 and back link 2 that are hinged, described rear suspension bar 1 is hinged with frame 4 top, described back link 1 is coupling with rear eccentric wheel 3, described back link 1 is coupling with vibratory sieve 10 charging aperture one end and rear end.
Vibrating mechanism operation logic: respectively have nine linkages in these sorting screen both sides, wherein eight movable parts, a fixed component and frame 4.Planar linkage component has 3 frees degree (rotate around z-axis, translation in the x-direction, in the y-direction translation) when not connecting with kinematic pair, have 11 revolute p in this 9 linkage
1, 0 higher pair p
heach revolute provides 2 constraints, therefore by free degree formula: F=3n-2p
1-p
h=3*8-2*11-0=2, determines motion if make it have, and need apply to drive number to be 2.
This vibrating mechanism, eccentric wheel is used to add grade connecting rod to drive the technical scheme of shaker vibration, and the progression of front and back connecting rod is inconsistent, the direction of vibration of whole compass screen surface is increased, compass screen surface not only can be moved back and forth by the vertical direction, also can move back and forth in the horizontal direction, because front rod adopts three cascade connection rod structures, rear connecting rod adopts two-stage connecting rod structure, add the interaction between eccentric driving and these structures of sieve nest itself, the movement locus of vibratory sieve front end can be made in " ∞ " shape, the movement locus ovalize of rear end, thus make the direction of vibration diversification of compass screen surface, better screening effect can be reached, material on it is also not easy to block sieve aperture more.
Preferred embodiment discussed above is only for illustration of technical scheme of the present invention, and non-limiting the present invention.
Claims (4)
1. the non-continuous vibration screening mechanism of 4 wheel driven, involving vibrations sieve and vibrating mechanism, it is characterized in that: described vibrating mechanism comprises a pair pre-eccentric wheel, eccentric wheel after a pair, multistage connecting rod and a pair rear multistage connecting rod before a pair, described pre-eccentric wheel and rear eccentric wheel are driven by transmission mechanism, pre-eccentric wheel and rear eccentric wheel are connected with rotary type between frame, the eccentric throw of described pre-eccentric wheel is greater than rear eccentric eccentric throw, described front multistage connecting rod is three cascade connection rod structures, comprise front suspension rod, front tension bar and front rod, described front suspension rod and frame top hinged, hinged between described front suspension rod and front tension bar, hinged between described front tension bar and front rod, described front rod and pre-eccentric are coupling between taking turns, described front rod and vibratory sieve front end and discharging opening one end are coupling, described rear multistage connecting rod is two-stage connecting rod structure, comprise the rear suspension bar and back link that are hinged, described rear suspension bar and frame top hinged, described back link and rear camshaft connect, described back link and vibratory sieve rear end and charging aperture one end are coupling.
2. the non-continuous vibration screening mechanism of 4 wheel driven according to claim 1, is characterized in that: described transmission mechanism drives the rotating speed of pre-eccentric wheel to be greater than rear eccentric rotating speed.
3. the non-continuous vibration screening mechanism of 4 wheel driven according to claim 2, is characterized in that: the described rotating speed of pre-eccentric wheel and the ratio of rear eccentric rotating speed are definite value.
4. the non-continuous vibration screening mechanism of 4 wheel driven according to claim 2, is characterized in that: pre-eccentric wheel is 2:1 with the ratio of rear eccentric rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315260.3A CN103447232B (en) | 2013-07-24 | 2013-07-24 | All-wheel-drive non-amplitude vibrating screen mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315260.3A CN103447232B (en) | 2013-07-24 | 2013-07-24 | All-wheel-drive non-amplitude vibrating screen mechanism |
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| Publication Number | Publication Date |
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| CN103447232A CN103447232A (en) | 2013-12-18 |
| CN103447232B true CN103447232B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310315260.3A Active CN103447232B (en) | 2013-07-24 | 2013-07-24 | All-wheel-drive non-amplitude vibrating screen mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107876367A (en) * | 2017-11-20 | 2018-04-06 | 恩施市锐协生物科技有限公司 | A kind of sorting unit of straw powder material |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB435854A (en) * | 1933-12-28 | 1935-09-30 | Einer Valdemar Christing | Improvements in or relating to vibratory graders |
| SU431710A1 (en) * | 1972-02-21 | 1979-07-25 | G Pk Exi Obogatitel Oboru | Inertia screen |
| CN87209939U (en) * | 1987-07-11 | 1988-01-27 | 中国矿业学院北京研究生部实习工厂 | Two-axle vibration exciting suspension-type probability mesh screen |
| CN2345292Y (en) * | 1998-12-04 | 1999-10-27 | 冶金工业部长沙冶金设计研究院 | Vibration screen driven by triaxial forcing synchronous ellipse equal thick |
| CN2686742Y (en) * | 2004-03-05 | 2005-03-23 | 杨永柱 | Amplitude degressive oscillating screen |
| CN100525934C (en) * | 2004-03-05 | 2009-08-12 | 鞍山重型矿山机器股份有限公司 | Amplitude descending screening method and vibrating screen |
| CN201618685U (en) * | 2009-12-30 | 2010-11-03 | 鞍山重型矿山机器股份有限公司 | Amplitude-decreasing banana vibrating screen |
| CN202943024U (en) * | 2012-11-29 | 2013-05-22 | 重庆开洲九鼎牧业科技开发有限公司 | Single-layer type vibrating screen |
| CN203408885U (en) * | 2013-07-24 | 2014-01-29 | 青岛农业大学 | Four-drive non-uniform amplitude vibrating screen mechanism |
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| CN103447232A (en) | 2013-12-18 |
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