CN110152990B - Step flexible grain cleaning mechanism imitating earthworm motion characteristics - Google Patents

Step flexible grain cleaning mechanism imitating earthworm motion characteristics Download PDF

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Publication number
CN110152990B
CN110152990B CN201910509515.7A CN201910509515A CN110152990B CN 110152990 B CN110152990 B CN 110152990B CN 201910509515 A CN201910509515 A CN 201910509515A CN 110152990 B CN110152990 B CN 110152990B
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China
Prior art keywords
sieve
floating sieve
floating
support rod
rod
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CN201910509515.7A
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CN110152990A (en
Inventor
***
于泳涛
刘天华
马杨
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Northeast Agricultural University
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Northeast Agricultural University
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    • 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
    • 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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

A ladder flexible grain cleaning mechanism imitating the movement characteristics of earthworms belongs to agricultural machinery; the mechanism comprises a frame, side plates are fixedly arranged on the front side part and the rear side part of the frame, a power driving system consisting of a driving shaft A, B, a belt pulley A, B, a cam A, B, a shaft seat A, B, a push-pull rod A, B and a pressure spring A, B and a step flexible sorting screen mechanism consisting of a supporting rod A, B, C, D, E, a fixed screen, a floating screen A, B, C, D, E, F, G, H and a connecting screen are arranged on the two side plates; the mechanism imitates the earthworm motion characteristic research design, and different amplitudes and vibration frequencies are formed by the continuous upward convex bending and downward concave flattening conversion of each screen assembly during operation, so that separated materials and impurities are continuously thrown up in the conveying process to complete the cleaning operation.

Description

Step flexible grain cleaning mechanism imitating earthworm motion characteristics
Technical Field
The invention belongs to agricultural machinery, and mainly relates to a cleaning operation mechanism on a grain cleaning machine.
Background
Because the not enough and defect in the aspect of structural design, the screen frame is cleaned to cereal now available is mostly rigid integral, and the motion mode is plane reciprocating motion, can't make the screen frame have different amplitude and frequency around, and is poor to the layering and the adaptability of material during the operation, and the propelling movement of material and miscellaneous separation effect are unsatisfactory. Meanwhile, when the air flow of the fan passes through the smooth surface of the screen body during separation operation, vortexes with enough strength and quantity are difficult to form between the air flow and the surface of the screen body, so that the separation effect of grains and impurities is not ideal, the operation efficiency is low, and the impurity removing effect and the quality are poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention researches and designs a stepped flexible grain cleaning mechanism imitating the movement characteristics of earthworms according to the bionic principle by combining with the actual requirements of production operation and use, thereby achieving the purposes of good grain and impurity separation effect, high separation quality and high efficiency.
The invention aims to realize the aims that side plates are symmetrically and fixedly arranged on the front side part and the rear side part of a machine frame respectively, a driving shaft A and a driving shaft B are rotatably supported and arranged on the left side part and the right side part of the two side plates which are oppositely arranged in parallel, cams A are fixedly arranged on the front end part and the rear end part of the driving shaft A respectively, cams B are fixedly arranged on the front end part and the rear end part of the driving shaft B respectively, a belt pulley A and a belt pulley B are fixedly arranged on the same side end parts of the driving shaft A and the driving shaft B respectively, and a transmission belt is sleeved on the belt pulley A and the belt pulley B; the upper side parts of the two oppositely configured side plates are fixedly provided with a support rod A, a support rod B, a support rod C, a support rod D and a support rod E which correspond to each other in sequence from left to right, shaft seats A are fixedly arranged on the upper side parts of the two oppositely configured side plates and positioned between the support rod B and the support rod C respectively, a push-pull rod A sleeved with a pressure spring A can be inserted on the shaft seats A in a vertically pulling and moving mode, the lower end of the pressure spring A is axially positioned on the push-pull rod A, the upper end of the pressure spring A is in contact fit with the shaft seats A, the lower end of the push-pull rod A is in close contact with a cam A, the shaft seats B are fixedly arranged on the upper side parts of the two oppositely configured side plates and positioned between the support rod D and the support rod E respectively, the push-pull rod B sleeved with the pressure spring B can be inserted on the shaft seats B in a vertically pulling and moving mode, and the lower end of the pressure spring B is axially positioned on the push-pull rod B, the upper end of a pressure spring B is in contact fit with a shaft seat B, the lower end of a push-pull rod B is in close contact with a cam B, a fixed sieve is supported and fixedly arranged on the upper end parts of a support rod A and a support rod B, a floating sieve A and a floating sieve D are respectively hinged on the support rod B and the support rod C, the floating sieve B and the floating sieve C are hinged on the push-pull rod A, the floating sieve C and the floating sieve D are in plug-in connection in a pull-in movement manner, a connecting sieve is supported and fixedly arranged on the upper end parts of the support rod C and the support rod D, a floating sieve E and a floating sieve H are respectively hinged on the support rod D and the support rod E, a floating sieve F and a floating sieve G are hinged on the push-pull rod B, the floating sieve F and the floating sieve E are in plug-in connection in a pull-in movement manner, and the floating sieve G and the floating sieve H are in plug-in a pull movement manner, the horizontal height position of the hinged point of the floating sieve A and the supporting rod B is always higher than that of the hinged point of the floating sieve D and the supporting rod C, the horizontal height position of the hinged point of the floating sieve E and the supporting rod D is always higher than that of the hinged point of the floating sieve H and the supporting rod E, and the horizontal height position of the hinged point of the floating sieve D and the supporting rod C is always higher than that of the hinged point of the floating sieve E and the supporting rod D. Thus, the step flexible grain cleaning mechanism imitating the earthworm motion characteristics is formed.
The invention creates and develops the stepped flexible grain cleaning mechanism according to the conversion type design of continuous upper bow-shaped contraction bending and stretching and unfolding of the body of the earthworm during the movement, forms different vibration amplitudes and vibration frequencies through the continuous conversion of continuous upward bending and downward sinking and flattening of each screen assembly during the operation, continuously throws the materials and the sundry residues in the pushing process, and completes the separation and cleaning of the materials and the sundry residues under the coordination of the original fan.
Drawings
FIG. 1 is a three-dimensional schematic diagram of the overall structure of a stepped flexible grain cleaning mechanism imitating the movement characteristics of earthworms;
FIG. 2 is a two-dimensional schematic diagram of the overall structure of a stepped flexible grain cleaning mechanism imitating the movement characteristics of earthworms;
FIG. 3 is a left side view of FIG. 2;
fig. 4 is a top view of fig. 2.
Description of part numbers in the figures:
1. the device comprises a frame, 2, side plates, 3, support rods A, 4, support rods B, 5, pressure springs A, 6, cams A, 7, belt pulleys A, 8, driving shafts A, 9, support rods C, 10, support rods D, 11, a driving belt, 12, pressure springs B, 13, belt pulleys B, 14, driving shafts B, 15, cams B, 16, support rods E, 17, shaft seats B, 18, push-pull rods B, 19, floating sieves H, 20, floating sieves G, 21, floating sieves F, 22, floating sieves E, 23, connecting sieves, 24, floating sieves D, 25, floating sieves C, 26, floating sieves B, 27, push-pull rods A, 28, floating sieves A, 29, shaft seats A, 30 and fixed sieves.
Detailed Description
The following detailed description of the inventive embodiments is provided in connection with the accompanying drawings. A ladder flexible grain cleaning mechanism imitating the movement characteristics of earthworms is characterized in that side plates 2 are fixedly mounted on the front side part and the rear side part of a rack 1 symmetrically, a driving shaft A8 and a driving shaft B14 are rotatably supported and mounted on the left side part and the right side part of the two side plates 2 which are arranged oppositely in parallel, a cam A6 is fixedly mounted on the front end part and the rear end part of the driving shaft A8 respectively, a cam B15 is fixedly mounted on the front end part and the rear end part of the driving shaft B14 respectively, a belt pulley A7 and a belt pulley B13 are fixedly mounted on the same side end part of the driving shaft A8 and the driving shaft B14 respectively, and a transmission belt 11 is sleeved on the belt pulley A7 and the belt pulley B13; a strut A3, a strut B4, a strut C9, a strut D10 and a strut E16 which are mutually corresponding are fixedly arranged on the upper side parts of the two oppositely arranged side plates 2 from left to right, shaft seats A29 are fixedly arranged on the upper side parts of the two oppositely arranged side plates 2 and positioned between the strut B4 and the strut C9 respectively, a push-pull rod A27 sleeved with a pressure spring A5 can be inserted and pulled vertically and movably on the shaft seat A29, the lower end of the pressure spring A5 is axially positioned on the push-pull rod A27, the upper end of the pressure spring A5 is in contact fit with the shaft seat A29, the lower end of the push-pull rod A27 is tightly contacted with the cam A6, a shaft seat B17 positioned between the strut D10 and the strut E16 is fixedly arranged on the upper side parts of the two oppositely arranged side plates 2, a push-pull rod B18 sleeved with the pressure spring B12 can be inserted and pulled vertically and moved axially on the shaft seat B36 17, and the lower end of the pressure spring B18 is positioned on the push-pull rod B18, the upper end of a pressure spring B12 is in contact fit with a shaft seat B17, the lower end of a push-pull rod B18 is in close contact with a cam B15, the upper ends of the support rod A3 and the support rod B4 are fixedly supported by a fixed sieve 30, the support rod B4 and the support rod C9 are respectively hinged with a floating sieve A28 and a floating sieve D24, the upper ends of the support rod A24 and the support rod B4 are hinged with a floating sieve B24 and a floating sieve C24, the floating sieve B24 and the floating sieve A24 are respectively in inserted connection capable of drawing and moving, the floating sieve C24 and the floating sieve D24 are in inserted connection capable of drawing and moving, the upper ends of the support rod C24 and the support rod D24 are fixedly connected with a sieve 23, the support rod D24 and the support rod E24 are respectively connected with a floating sieve E24 and a floating sieve H24, the upper ends of the push-pull sieve B24 and the floating sieve E24 are respectively in inserted connection capable of drawing and moving, the horizontal height position of the hinged point of the floating sieve A28 and the supporting rod B4 is always higher than that of the hinged point of the floating sieve D24 and the supporting rod C9, the horizontal height position of the hinged point of the floating sieve E22 and the supporting rod D10 is always higher than that of the hinged point of the floating sieve H19 and the supporting rod E16, and the horizontal height position of the hinged point of the floating sieve D24 and the supporting rod C9 is always higher than that of the hinged point of the floating sieve E22 and the supporting rod D10.
During operation, the external power drives the driving shaft A8 to rotate through the belt pulley A7, the driving belt 11 drives the driving shaft B14 to synchronously rotate through the belt pulley B13, the rotating cam A6 drives the push-pull rod A27 to vertically reciprocate on the shaft seat A29, the push-pull rod A27 synchronously drives the floating sieve B26, the floating sieve A28, the floating sieve C25 and the floating sieve D24 to vertically reciprocate in a protruding and sinking manner to repeatedly throw up the materials and the impurities on the sieve surface, in synchronization with the reciprocating movement, the rotating cam B15 drives the push-pull rod B18 to vertically reciprocate on the shaft seat B17, the push-pull rod B18 drives the floating sieve F21, the floating sieve E22, the floating sieve G20 and the floating sieve H19 to vertically move in a protruding and sinking manner, the materials and the impurities thrown by the floating sieve D24 through the connecting sieve 23 are continuously thrown up and then repeatedly thrown up, and the materials and impurities are thrown up again, and the materials are sent out again, and the original air flow of the fan passes through the impurity layer in the whole process, the impurity removing and separating operation can be finished efficiently and high-quality.

Claims (1)

1. The utility model provides a mechanism is cleaned to flexible cereal of ladder of imitative earthworm motion characteristic which characterized in that: the side plates (2) are fixedly arranged on the front side part and the rear side part of the frame (1) symmetrically, a driving shaft A (8) and a driving shaft B (14) are rotatably supported and arranged on the left side part and the right side part of the two side plates (2) which are arranged oppositely in parallel, cams A (6) are fixedly arranged on the front end part and the rear end part of the driving shaft A (8) respectively, cams B (15) are fixedly arranged on the front end part and the rear end part of the driving shaft B (14) respectively, a belt pulley A (7) and a belt pulley B (13) are fixedly arranged on the same side end part of the driving shaft A (8) and the driving shaft B (14) respectively, and a transmission belt (11) is sleeved on the belt pulley A (7) and the belt pulley B (13); a support rod A (3), a support rod B (4), a support rod C (9), a support rod D (10) and a support rod E (16) which are sequentially and mutually corresponding from left to right are fixedly arranged on the upper side parts of the two oppositely arranged side plates (2), shaft seats A (29) are respectively and fixedly arranged on the upper side parts of the two oppositely arranged side plates (2) and positioned between the support rod B (4) and the support rod C (9), a push-pull rod A (27) sleeved with a pressure spring A (5) can be inserted on the shaft seats A (29) in a vertically drawing and moving manner, the lower end of the pressure spring A (5) is axially positioned on the push-pull rod A (27), the upper end of the pressure spring A (5) is in contact fit with the shaft seats A (29), the lower end of the push-pull rod A (27) is in close contact with a cam A (6), and shaft seats B (17) are respectively and fixedly arranged on the upper side parts of the two oppositely arranged side plates (2) and positioned between the support rod D (10) and the support rod E (16), a push-pull rod B (18) sleeved with a pressure spring B (12) can be inserted on a shaft seat B (17) in a vertically drawing and moving manner, the lower end of the pressure spring B (12) is axially positioned on the push-pull rod B (18), the upper end of the pressure spring B (12) is in contact fit with the shaft seat B (17), the lower end of the push-pull rod B (18) is in close contact with a cam B (15), a fixed sieve (30) is supported and fixed on the upper end parts of a support rod A (3) and a support rod B (4), a floating sieve A (28) and a floating sieve D (24) are respectively hinged on the support rod B (4) and the support rod C (9), a floating sieve B (26) and a floating sieve C (25) are hinged on the push-pull rod A (27), the floating sieve B (26) and the floating sieve A (28) are connected in a drawing and moving manner, and the floating sieve C (25) and the floating sieve D (24) are connected in a drawing and moving manner, a connecting sieve (23) is fixedly supported and arranged at the upper end parts of the supporting rod C (9) and the supporting rod D (10), a floating sieve E (22) and a floating sieve H (19) are respectively hinged and arranged on the supporting rod D (10) and the supporting rod E (16), a floating sieve F (21) and a floating sieve G (20) are hinged and arranged on the push-pull rod B (18), the floating sieve F (21) and the floating sieve E (22) are in plug-in connection in a drawing and moving manner, the floating sieve G (20) and the floating sieve H (19) are in plug-in connection in a drawing and moving manner, the horizontal height position of the hinge point of the floating sieve A (28) and the supporting rod B (4) is always higher than the horizontal height position of the hinge point of the floating sieve D (24) and the supporting rod C (9), and the horizontal height position of the hinge point of the floating sieve E (22) and the supporting rod D (10) is always higher than the horizontal height position of the hinge point of the floating sieve H (19) and the supporting rod E (16), the horizontal height position of the hinged point of the floating sieve D (24) and the supporting rod C (9) is always higher than the horizontal height position of the hinged point of the floating sieve E (22) and the supporting rod D (10).
CN201910509515.7A 2019-06-13 2019-06-13 Step flexible grain cleaning mechanism imitating earthworm motion characteristics Active CN110152990B (en)

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Application Number Priority Date Filing Date Title
CN201910509515.7A CN110152990B (en) 2019-06-13 2019-06-13 Step flexible grain cleaning mechanism imitating earthworm motion characteristics

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Application Number Priority Date Filing Date Title
CN201910509515.7A CN110152990B (en) 2019-06-13 2019-06-13 Step flexible grain cleaning mechanism imitating earthworm motion characteristics

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CN110152990A CN110152990A (en) 2019-08-23
CN110152990B true CN110152990B (en) 2021-11-19

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112570277B (en) * 2020-11-03 2023-06-02 东北农业大学 Parallel-movement combined wave screen type corn kernel cleaning mechanism
CN112588582B (en) * 2020-11-03 2023-05-09 东北农业大学 Compound wave screen imitating earthworm body surface structure and motion
CN113145447A (en) * 2021-06-04 2021-07-23 东北农业大学 Earthworm-imitating peristaltic corn cleaning mechanism

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU197235B (en) * 1985-10-07 1989-03-28 Ife Gmbh Screen structure
CN105234076A (en) * 2015-11-12 2016-01-13 哈尔滨纳诺机械设备有限公司 Granulate machine screen and screen mechanism of swing type granulate machine with screen
CN107314878A (en) * 2017-06-29 2017-11-03 太原理工大学 A kind of inertia flip flop screen experimental bench
CN108097570A (en) * 2017-11-01 2018-06-01 江苏信实精密工具有限公司 A kind of low-loss sieve material component
CN107983622B (en) * 2017-11-24 2019-11-29 东北农业大学 Wave Shai Shi grain cleaning mechanism
CN108435560B (en) * 2018-03-21 2020-04-24 东北农业大学 Rotary motion elastic sorting screen wave type vibration mechanism
CN109092673A (en) * 2018-09-11 2018-12-28 天地（唐山）矿业科技有限公司 A kind of embedded flip flop screen of double drive
CN109225827A (en) * 2018-10-16 2019-01-18 天地（唐山）矿业科技有限公司 A kind of multiaxis driving forced vibration flip flop screen
CN109622359B (en) * 2018-12-17 2020-09-15 东北大学 Double-motor driven near-resonance nonlinear vibration relaxation sieve

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