CN110238030A - A kind of five bars constraint change born of the same parents' cleaning screen - Google Patents
A kind of five bars constraint change born of the same parents' cleaning screen Download PDFInfo
- Publication number
- CN110238030A CN110238030A CN201910428939.0A CN201910428939A CN110238030A CN 110238030 A CN110238030 A CN 110238030A CN 201910428939 A CN201910428939 A CN 201910428939A CN 110238030 A CN110238030 A CN 110238030A
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- CN
- China
- Prior art keywords
- cleaning screen
- same parents
- pair
- connecting rod
- born
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- Combined Means For Separation Of Solids (AREA)
Abstract
A kind of five bars constraint change born of the same parents' cleaning screen, including connecting rod, connecting rod, even case bar, clears up screen box and rack；The connecting rod passes through revolute with connecting rod, rack respectively and connect；The even case bar is connect by rotary limited pair change born of the same parents' pair with connecting rod, is connect with cleaning screen box by revolute；The cleaning screen box becomes born of the same parents' pair by limit prismatic pair with rack and connect.The present invention is able to achieve vibratory cleaning and screening dual function, has many advantages, such as that vibration bandwidth, velocity variations are violent, easily controllable.
Description
Technical field
The present invention relates to vibrating cleaning sieve technical fields, and in particular to a kind of five bars constraint change born of the same parents' cleaning screen.
Background technique
With the development of society and being showing improvement or progress day by day for science and technology, vibrating cleaning sieve is because of the simple, working efficiency with structure
The advantages that high, becomes the mainstream of sieving machine development, is widely used in every profession and trade.The vibration of current most of vibrating cleaning sieves
Mode is simple harmonic oscillation, due to frequency band not enough wide and velocity variations are not violent etc. enough, it is difficult to sieve fine material, screening effect
Fruit is not satisfactory；Although there is another mode of vibration chaotic vibration frequency band more broader than simple harmonic oscillation and more violent speed to become
Change, is highly suitable for vibrating the occasions such as sturdy, vibration screening and vibration blanking, but due at present still locating the understanding of chaos phenomenon
In the primary stage, the mechanism operation met under specific work environments using chaos phenomenon is needed to be further improved.
Five-bar linkage with two free degrees is the lack of driven that a kind of redundant degree of freedom is 1 when only driving link inputs certain revolving speed
Structure, the movement timing of mechanism and structure state are unstable during the motion, show as chaotic motion state, and controllability is poor.
Metamorphic mechanisms provide a kind of new thinking, British scholar Dai Jiansheng in 1996 et al. to solve above-mentioned technical problem
The manufacture crafts such as folding carton and craftwork are used for reference, regard cardboard as connecting rod, folding line regards revolute pair as, it was found that become born of the same parents' machine
Structure, and at " Journal of Mechanical Design ", (phase of volume 121 the 3rd), published thesis " Mobility in 1999
Metamorphic mechanisms offoldable/erectable kinds " formally proposes metamorphic mechanisms
(metamorphic mechanism) concept, it is indicated that, metamorphic mechanisms different from determining freedom degree and determining the traditional mechanism of number of components
Self recombination and reconstruct can be carried out according to the variation and mission requirements of environment and operating condition, it can variable freedom and variable number of components
Mesh.
Summary of the invention
The object of the present invention is to provide a kind of five bars constraints to become born of the same parents' cleaning screen, by variable freedom and allosteric number of packages to obtain
Good screening effect.
To achieve the goals above, the present invention designs a kind of five bars constraint and becomes born of the same parents' cleaning screen, including connecting rod, connecting rod,
Even case bar, cleaning screen box and rack；The connecting rod passes through revolute with rack, connecting rod respectively and connect；Even case bar and the company
Bar becomes the connection of born of the same parents' pair by rotary limited pair, is connect with cleaning screen box by revolute；The cleaning screen box and rack pass through limit
Position prismatic pair becomes the connection of born of the same parents' pair.
Preferably, the cleaning screen case includes that cabinet, cleaning sieve, shaft and swing rod, the cleaning screen net laying are loaded on case
In vivo, the shaft is fixedly connected with swing rod, is connect with cabinet by bearing.
Preferably, the rotary limited pair becomes born of the same parents' pair and is composed of rotary stopper spring-damper and revolute, described
Rotary stopper spring-damper both ends are respectively fixedly connected with connecting rod and even case bar, and the revolute is flexibly connected connecting rod and even case
Bar.
Preferably, the limit prismatic pair becomes born of the same parents' pair and is composed by moving limit spring damper with prismatic pair, described
Mobile limit spring damper both ends are respectively fixedly connected with cleaning screen box and rack, the prismatic pair be flexibly connected cleaning screen box with
Rack.
One kind of the invention five bars constraint becomes born of the same parents' cleaning screen and has the advantages that.
Compared with simple harmonic oscillation cleaning screen, there are broader frequency band and more violent velocity variations.
Compared with chaotic vibration cleaning screen, there is determining configuration, it is easily controllable.
Mechanism is in uncertain with timing is moved when mechanism state, and the movement of randomness is advantageously implemented vibratory cleaning and screening
Dual function.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the cleaning screen box of embodiment illustrated in fig. 1.
Fig. 3 is the first structure state structural schematic diagram of embodiment illustrated in fig. 1.
Fig. 4 is the second structure state structural schematic diagram of embodiment illustrated in fig. 1.
Fig. 5 is embodiment illustrated in fig. 1 with mechanism state structural schematic diagram.
Specific embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with specific embodiments and drawings to structure of the invention
Principle is described in further detail.
As shown in Figure 1, a kind of five bars constraint becomes born of the same parents' cleaning screen, including connecting rod 1, connecting rod 2, even case bar 3, cleaning screen box 4
With rack 5；The connecting rod 1 is connect by revolute 6 respectively with connecting rod 2, rack 5；Even case bar 3 and the connecting rod 2 pass through limit
Position revolute becomes 7 connection of born of the same parents' pair, is connect with cleaning screen box 4 by revolute 6；The cleaning screen box 4 is moved with rack 5 by limit
The dynamic secondary born of the same parents' pair 8 that becomes connects.
As shown in Fig. 2, the cleaning screen box 4 includes cabinet 401, clears up sieve 402, shaft 403 and swing rod 404, it is described
Cleaning sieve 402 is paved in cabinet 401, can be required according to screening, and dimension is replaced, and the shaft 403 and swing rod 404 are solid
Fixed connection is connect with cabinet 401 by bearing.
As shown in figure 3, the rotary limited pair becomes born of the same parents' pair 7 and keeps opposite in geometrical constraint state in the first structure state
Static, the connecting rod 2 and even case bar 3 are equivalent to a component, and the limit prismatic pair becomes born of the same parents' pair 8 and moves, and limit prismatic pair 802
Regulated and controled by mobile limit spring damper 801, mechanism is equivalent to two degrees of freedom slider-crank mechanism.
As shown in figure 4, the limit prismatic pair becomes born of the same parents' pair 8 and keeps opposite in geometrical constraint state in the second structure state
Static, the rotary limited pair becomes born of the same parents' pair 7 and moves, and rotary limited pair 702 is regulated and controled by rotary stopper spring-damper 701, mechanism
It is equivalent to single-degree-of-freedom four-bar mechanism.
The working principle of the invention: showing initial position with Fig. 1, applies a revolving speed clockwise, cleaning to connecting rod 1
Screen box 4 moves to right, and mobile limit spring damper 801 gradually reduces, and rotary limited pair becomes born of the same parents' pair 7 and keeps in geometrical constraint state
Opposing stationary, mechanism is in the first structure state；When decrement reaches maximum, cleaning screen box 4 is remain stationary, and mechanism is in the second structure
State is suitble to feeding at this time；Subsequent rotary limited pair becomes born of the same parents' pair 7 and limit prismatic pair becomes born of the same parents' pair 8 simultaneously in born of the same parents' state is become, and is revolving
Turn to realize resistance conversion between pair 702 and prismatic pair 802, due to rotary stopper spring-damper 701 and mobile limit spring resistance
The uncertainty of 801 active state of Buddhist nun's device, cause structure state transformation be it is random, i.e., mechanism be in mechanism state, as shown in figure 5,
Cleaning screen box 4 moves to left, and swing rod 404 is cleared up and sieved convenient for material with swing.
The above, practical ways are only that preferred embodiments of the present invention will be described, not to of the invention
Range is defined, and under the premise of not departing from the spirit of the technology of the present invention, this field engineers and technicians are to skill of the invention
The various changes and improvements that art scheme is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (4)
1. a kind of five bars constraint becomes born of the same parents' cleaning screen, it is characterised in that: including connecting rod, connecting rod, even case bar, cleaning screen box and machine
Frame；The connecting rod passes through revolute with connecting rod, rack respectively and connect；The even case bar and connecting rod pass through rotary limited pair change born of the same parents
Pair connection is connect with cleaning screen box by revolute；The cleaning screen box becomes born of the same parents' pair by limit prismatic pair with rack and connect.
2. five bar according to claim 1 constraint becomes born of the same parents' cleaning screen, it is characterised in that: the cleaning screen case include cabinet,
Sieve, shaft and swing rod are cleared up, loaded in cabinet, the shaft is fixedly connected with swing rod, is logical with cabinet the cleaning screen net laying
Cross bearing connection.
3. five bar according to claim 1 constraint becomes born of the same parents' cleaning screen, it is characterised in that: the rotary limited pair become born of the same parents' pair by
Rotary stopper spring-damper and revolute are composed, and rotary stopper spring-damper both ends are respectively fixedly connected with connecting rod
With even case bar, the revolute is flexibly connected connecting rod and even case bar.
4. five bar according to claim 1 constraint becomes born of the same parents' cleaning screen, it is characterised in that: limit prismatic pair change born of the same parents' pair by
Mobile limit spring damper is composed with prismatic pair, and the mobile limit spring damper both ends are respectively fixedly connected with cleaning
Screen box and rack, the prismatic pair are flexibly connected cleaning screen box and rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910428939.0A CN110238030A (en) | 2019-05-22 | 2019-05-22 | A kind of five bars constraint change born of the same parents' cleaning screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910428939.0A CN110238030A (en) | 2019-05-22 | 2019-05-22 | A kind of five bars constraint change born of the same parents' cleaning screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110238030A true CN110238030A (en) | 2019-09-17 |
Family
ID=67884753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910428939.0A Withdrawn CN110238030A (en) | 2019-05-22 | 2019-05-22 | A kind of five bars constraint change born of the same parents' cleaning screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110238030A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151448A (en) * | 2020-02-28 | 2020-05-15 | 长江大学 | Composite chaotic motion vibrating screen |
| CN114179065A (en) * | 2022-01-13 | 2022-03-15 | 东北大学 | Under-actuated mechanism comprising metamorphic kinematic pair with variable constraint |
-
2019
- 2019-05-22 CN CN201910428939.0A patent/CN110238030A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151448A (en) * | 2020-02-28 | 2020-05-15 | 长江大学 | Composite chaotic motion vibrating screen |
| CN114179065A (en) * | 2022-01-13 | 2022-03-15 | 东北大学 | Under-actuated mechanism comprising metamorphic kinematic pair with variable constraint |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190917 |
|
| WW01 | Invention patent application withdrawn after publication |