CN205213482U - Eccentric screen cloth - Google Patents

Eccentric screen cloth Download PDF

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Publication number
CN205213482U
CN205213482U CN201521037196.8U CN201521037196U CN205213482U CN 205213482 U CN205213482 U CN 205213482U CN 201521037196 U CN201521037196 U CN 201521037196U CN 205213482 U CN205213482 U CN 205213482U
Authority
CN
China
Prior art keywords
screen cloth
eccentric
arc
segmental
support plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201521037196.8U
Other languages
Chinese (zh)
Inventor
余卫东
张恒金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Hwasdan Machinery Manufacturing Co Ltd
Original Assignee
Chongqing Hwasdan Machinery Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Hwasdan Machinery Manufacturing Co Ltd filed Critical Chongqing Hwasdan Machinery Manufacturing Co Ltd
Priority to CN201521037196.8U priority Critical patent/CN205213482U/en
Application granted granted Critical
Publication of CN205213482U publication Critical patent/CN205213482U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an eccentric screen cloth, include braced frame and install the screen cloth on braced frame, the screen cloth cross -section is the semicircle arcuation, and one of them segmental arc of this screen cloth has the different centres of a circle or different radiuses rather than surplus segmental arc, makes sieve net shape become eccentric structure. Braced frame includes a plurality of arc backup pads that set up side by side, links together through the connecting plate between the arc backup pad, the arc backup pad forms eccentric structure, the screen cloth is installed along the arc -shaped path of arc backup pad. The arc backup pad divide into two segmental arcs along circumference, and the radius of two segmental arcs is the same, staggers in the centre of a circle. The utility model discloses, getting into because the semicircle of screen cloth is inhomogeneous when threshing tin when cereal, making the threshing gap between cylinder and the screen cloth inhomogeneous, changes, cereal blocks at the in service because threshing gap of threshing mechanism, makes cereal all the time at fluffy state, change in corn break away from with the discharge of debris.

Description

A kind of eccentric screen cloth
Technical field
The utility model belongs to grain header technical field, particularly relates to a kind of eccentric screen cloth.
Background technology
Grain combine is called for short combine, gathers in the combination machine machinery of crops exactly, is the operation such as harvesting, threshing, separation cane, the assorted excess of removing that once can complete cereal, directly obtains the harvest machinery of grain from field.
In the prior art, known technology is in the disengaging carrying out grain and weeds with screen cloth, in order to reach better separating effect, screen cloth on a grain header is usually in succession superposed by multiple sieve plate with sieve tooth and forms, during work, screen cloth moves back and forth, grain falls into pen by the sieve aperture on screen cloth, weeds etc. cannot pass through sieve aperture because volume is comparatively large, the sieve tooth of reciprocating action simultaneously gives the thrust in weeds horizontal and vertical direction, in order to weeds are dished out outside machine, typical sieve tooth is unidirectional tooth, for being pushed to a direction by weeds.
And, when combine harvesting speed exceedes certain speed per hour, because harvesting speed is fast, the cereal of sheller unit is entered from feeding mouth, now often there is such situation: grain can not fall into pen rapidly timely from screen cloth, therefore always have sub-fraction grain can through screen cloth upper surface by outside the machine of dishing out, cannot pass through screen cloth smoothly, the percent of loss in recovery process improves greatly.
Utility model content
The deficiencies in the prior art in view of the above, the purpose of this utility model is to provide a kind of eccentric screen cloth, is convenient to the disengaging of grain and the discharge of foreign material.
For achieving the above object and other relevant objects, technical solutions of the utility model are as follows:
A kind of eccentric screen cloth, the screen cloth comprising support frame and install on the support frame, described screen cloth cross section is semicircular arc, and one of them segmental arc of this screen cloth and all the other segmental arcs have the different centers of circle or different radiuses, makes screen cloth form eccentric structure.
Adopt said structure; when cereal enters thrashing cylinder because the semi arch of screen cloth is uneven; make the cylinder-concave clearance between cylinder and screen cloth uneven; it is change; cereal separating mechanism run in all the time due to the change of cylinder-concave clearance; impel cereal to be converted to fluffy state by compression, be easier to the disengaging of grain and the discharge of foreign material.
As preferably: described support frame comprises multiple curved support plate be arranged side by side, and is linked together between curved support plate by connecting plate, described curved support plate forms eccentric structure, and the arching trajectory of described screen cloth arcuately gripper shoe is installed.The eccentric structure of the center of circle or radius change is directly arranged to by curved support plate by this structure, then installed along this eccentric track by screen cloth, manufactures more convenient.
As preferably: described curved support plate side is provided with multiple otic placode, and described screen cloth is fixed by bolt and otic placode.
As preferably: the eccentric arranged in tracks of arc of described otic placode arcuately gripper shoe.
As preferably: described otic placode cross section is L-type.
As preferably: the upper end of described screen cloth is fixedly clamped by pressing plate and connecting plate.
As preferably: described curved support plate is made up of two segmental arcs, and the radius of two segmental arcs is identical, staggers in the center of circle.
As preferably: described screen cloth increases gradually along the radius of threshing rotation direction segmental arc.
As preferably: described screen cloth is establishment sieve.
As mentioned above; the beneficial effects of the utility model are: when cereal enters thrashing cylinder because the semi arch of screen designs is uneven; the center of circle or radius are changes; the cylinder-concave clearance between cylinder and screen cloth is made to be change; cereal because cylinder-concave clearance impels cereal to be in fluffy state all the time, is easier to the disengaging of grain and the discharge of foreign material in separating mechanism runs.Screen cloth is installed fixing by otic placode and bolt, is convenient to dismounting and change.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is A-A direction view in Fig. 2.
Piece mark explanation
1 screen cloth
2 gripper shoes
3 connecting plates
4 otic placodes
5 pressing plates
6 bolts
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present utility model and effect easily.
As shown in Figure 1 to Figure 3, a kind of eccentric screen cloth, the screen cloth 1 comprising support frame and install on the support frame, described screen cloth 1 cross section is roughly semicircular arc, this one of them segmental arc of screen cloth 1 has the different centers of circle or different radiuses from all the other segmental arcs, makes screen cloth 1 form eccentric structure.
Support frame comprises multiple curved support plate 2 be arranged side by side, linked together by connecting plate 3 between curved support plate 2, in order to easily manufactured in this example, as shown in Figure 3, described curved support plate 2 forms eccentric structure, curved support plate 2 is circumferentially divided into the segmental arc of two 1/4th, the radius of two segmental arcs is identical, center of circle O 1with O 2between to stagger a segment distance, the arching trajectory of described screen cloth 1 arcuately gripper shoe 2 is installed.When cylinder is arranged and the center of circle O of one of them 1/4th segmental arc 1overlap, then form eccentric structure with another 1/4th segmental arc, realize the change in gap.The eccentric structure of the center of circle or radius change is directly arranged to by curved support plate 2 by this structure, then installed along this eccentric track by screen cloth 1, manufactures more convenient.
Further, described screen cloth 1 is establishment sieve, and curved support plate 2 side is provided with multiple otic placode 4, and the eccentric arranged in tracks of arc of otic placode 4 arcuately gripper shoe 2, screen cloth 1 is fixed by bolt 6 and otic placode 4.This structure directly defines the installation track of screen cloth 1 by the layout track of curved support plate 2 and otic placode 4, is convenient to installation and the sizing of screen cloth 1.
Preferably, otic placode 4 cross section is L-type, and its one side is welded with curved support plate 2, and another side passes through bolt 6 and nut and screen cloth 1 to be fixed.The upper end of screen cloth 1 is fixedly clamped by pressing plate 5 and connecting plate 3, can also connect hoisting mechanism, with the height etc. of adjustable screen 1 in screen cloth 1 upper end.
In other embodiments, screen cloth 11 increases gradually along the radius of threshing rotation direction segmental arc, and the center of circle namely formed between continuous segmental arc is different, and radius is also different, in the process coordinated with cylinder, and the gap of formation and modification between cylinder and screen cloth 11.
Adopt above-mentioned screen cloth 11 structure; the semi arch designed due to screen cloth 11 when cereal enters thrashing cylinder is uneven; the center of circle or radius are changes; the cylinder-concave clearance between cylinder and screen cloth 11 is made to be change; cereal in separating mechanism runs due to the size variation of cylinder-concave clearance; impel cereal to be in fluffy state all the time, be easier to the disengaging of grain and the discharge of foreign material.
Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.

Claims (9)

1. an eccentric screen cloth, the screen cloth comprising support frame and install on the support frame, it is characterized in that: described screen cloth cross section is semicircular arc, one of them segmental arc of this screen cloth and all the other segmental arcs have the different centers of circle or different radiuses, make screen cloth form eccentric structure.
2. the eccentric screen cloth of one according to claim 1, it is characterized in that: described support frame comprises multiple curved support plate be arranged side by side, linked together by connecting plate between curved support plate, described curved support plate forms eccentric structure, and the arching trajectory of described screen cloth arcuately gripper shoe is installed.
3. the eccentric screen cloth of one according to claim 2, is characterized in that: described curved support plate side is provided with multiple otic placode, and described screen cloth is fixed by bolt and otic placode.
4. the eccentric screen cloth of one according to claim 3, is characterized in that: the eccentric arranged in tracks of arc of described otic placode arcuately gripper shoe.
5. the eccentric screen cloth of one according to claim 3, is characterized in that: described otic placode cross section is L-type.
6. the eccentric screen cloth of one according to claim 2, is characterized in that: the upper end of described screen cloth is fixedly clamped by pressing plate and connecting plate.
7. the eccentric screen cloth of one according to claim 2, is characterized in that: described curved support plate is made up of two segmental arcs, and the radius of two segmental arcs is identical, staggers in the center of circle.
8. the eccentric screen cloth of one according to claim 1, is characterized in that: described screen cloth increases gradually along the radius of threshing rotation direction segmental arc.
9. the eccentric screen cloth of one according to claim 1, is characterized in that: described screen cloth is establishment sieve.
CN201521037196.8U 2015-12-11 2015-12-11 Eccentric screen cloth Expired - Fee Related CN205213482U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521037196.8U CN205213482U (en) 2015-12-11 2015-12-11 Eccentric screen cloth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521037196.8U CN205213482U (en) 2015-12-11 2015-12-11 Eccentric screen cloth

Publications (1)

Publication Number Publication Date
CN205213482U true CN205213482U (en) 2016-05-11

Family

ID=55888593

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521037196.8U Expired - Fee Related CN205213482U (en) 2015-12-11 2015-12-11 Eccentric screen cloth

Country Status (1)

Country Link
CN (1) CN205213482U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160511

Termination date: 20171211

CF01 Termination of patent right due to non-payment of annual fee