CN216452001U - Threshing and cleaning device of harvester - Google Patents

Abstract

The utility model discloses a threshing and cleaning device of a harvester, which comprises a concave plate, an upper sieve and a lower sieve which are arranged at the lower part of a threshing cylinder, wherein a shaking plate is arranged between the concave plate and the upper sieve, the shaking plate is hung on a left frame and a right frame through four equal hanging belts, the front end of the shaking plate is downwards inclined, the front end of the shaking plate is positioned at the rear part of the front end of the upper sieve, the rear end of the shaking plate is positioned at the rear part of the concave plate, the shaking plate comprises a bottom plate and a plurality of angle-shaped plates which are fixedly arranged on the bottom plate, the angle-shaped plates are arranged along the front and rear directions of the bottom plate, a right-angled triangular structure is formed between the angle-shaped plates and the bottom plate, one side of the shaking plate is connected with a crank mechanism, and the crank mechanism is connected on the frame at the corresponding side. The utility model can make the separated material at the rear of the roller return to the front of the upper screen by arranging the shaking plate, prolong the cleaning time of the material on the screen surface and strengthen the distribution uniformity of the material on the screen surface.

Description

Threshing and cleaning device of harvester

Technical Field

The utility model relates to a threshing and cleaning device of a harvester, belonging to the technical field of harvesters.

Background

The harvester in the prior art mainly comprises a threshing cylinder, a concave plate, an upper sieve, a lower sieve, a sundries conveyor, a grain conveyor and a fan. After the material to be threshed is threshed by the threshing cylinder and the concave plate, a part of threshed material is output from the rear part of the cylinder and falls onto the cleaning sieve, the threshed material is screened by the cleaning sieve under the vibration action of the fan and the cleaning sieve, the seed grains are conveyed and collected by the seed grain conveyor, and the sundries are conveyed and collected by the sundries conveyor. The existing harvester has the following defects: the cleaning time of the threshed objects on the cleaning sieve is short, the cleaning is not clean, and the separation loss is large.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the threshing and cleaning device of the harvester, which can prolong the cleaning time of the threshed objects on the screen surface and reduce the cleaning loss.

The utility model is realized by the following technical scheme: the utility model provides a harvester cleaning plant that threshes, is including setting up at the concave plate of threshing cylinder lower part, go up the sieve, lower sieve, characterized by: the utility model discloses a screen, including concave plate, upper screen, shaking plate, upper screen, lower screen, upper screen, lower screen, lower screen, lower screen, lower.

In the utility model, the shaking plate can realize reciprocating motion in the left and right directions through the crank mechanism. The shaking plate is arranged, the threshed objects separated from the rear part of the roller fall on the shaking plate firstly, and the threshed objects separated from the rear part of the roller can return to the front part of the upper screen through the shaking plate, so that the cleaning time of the threshed objects on the screen surface is prolonged, and the cleaning loss is reduced. The shaking plate adopts the structural design that the horn-shaped plate is arranged on the bottom plate, the shaking plate can shake grains towards one side in the reciprocating motion process and can not be shaken back to the other side, the uniformity of the distribution of the screen surface threshing materials is enhanced, and the problem of overlarge cleaning loss is reduced.

Furthermore, in order to ensure that the stripping object can smoothly move from the rear part to the front end on the shaking plate, the included angle beta between the shaking plate and the horizontal plane is larger than the friction angle between the stripping object and the shaking plate.

Furthermore, in order to prevent the shaking plate from polarizing, the distance between the two hanging strips in the length direction of the shaking plate is greater than 1/2 of the length of the shaking plate and less than 3/4 of the length of the shaking plate.

Furthermore, in order to ensure the uniformity of the stripping on the screen surface of the shaking plate, the included angle theta between the bevel edge of the angular plate and the bottom plate is equal to or larger than the friction angle between the stripping and the bottom plate.

Furthermore, in order to prevent the fallen objects from sliding out of the shaking plate, the rear part of the shaking plate is connected with a blocking plate.

Furthermore, in order to prevent the movement of the threshed objects on the shaking plate from being influenced by the accumulation of the threshed objects separated from the rear end of the roller, the included angle between the blocking plate and the bottom plate is more than 90 degrees and less than 90 degrees plus beta plus theta.

The utility model has the beneficial effects that: the utility model has simple structure, and the separated threshed objects at the rear part of the roller firstly fall on the shaking plate by arranging the shaking plate, and the threshed objects separated at the rear part of the roller can return to the front part of the upper screen by the shaking plate, thereby prolonging the cleaning time of the threshed objects on the screen surface, preventing the threshed objects separated at the rear end of the roller from being directly thrown out of the machine to cause overlarge separation loss and reducing the cleaning loss; the shaking plate adopts the structural design that the horn-shaped plate is arranged on the bottom plate, so that the shaking plate can realize that grains shaken to one side can not be shaken back to the other side in the reciprocating motion process, the uniformity of the distribution of the threshing materials on the screen surface is enhanced, and the problem of overlarge cleaning loss is reduced; by adopting the equal-length hanging belt to connect the shaking plate and the frame, the consistency of the movement tracks of the materials on the shaking plate can be ensured, and meanwhile, the vibration damage of the shaking plate to the frame caused by vibration can be reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention in a specific embodiment;

FIG. 2 is a schematic diagram of the structure of the shaker plate of FIG. 1;

FIG. 3 is a view taken in the direction A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the shaker plate of the present invention;

in the figure: 1. a fan; 2. a baffle; 3. a concave plate; 4. a threshing cylinder; 5. a blocking plate; 6. a shaking plate; 7. sieving; 8. sieving; 9. a residue conveyor; 10. a seed conveyor; 11. a left frame; 12. a sling; 13. a supporting seat; 14. a drive shaft; 15. a sprocket; 16. a first bearing; 17. a crank; 18. a connecting plate; 19. a second bearing; 20. a connecting shaft; 21. a third bearing; 22. a bolt shaft; 23. a nut; 24. a support; 25. a right frame; 26. a horn-shaped plate; 27. a base plate.

Detailed Description

The utility model will now be further illustrated by way of non-limiting examples in conjunction with the accompanying drawings:

the attached drawing shows a schematic structural diagram of a harvester, which mainly comprises a fan 1, a guide plate 2, a concave plate 3, a threshing cylinder 4, a blocking plate 5, a shaking plate 6, an upper sieve 7, a lower sieve 8, an impurity conveyor 9, a grain conveyor 10, a left frame 11, a right frame 25 and a hanging belt 12. The utility model is an improvement on the basis of the existing threshing and cleaning device of the harvester, and a shaking plate structure is added.

The shaking plate 6 is vertically positioned between the concave plate 3 and the upper screen 7, and horizontally positioned at the front end thereof to the rear of the front end of the upper screen 7 and at the rear end thereof to the rear of the concave plate 3. The shaking plate 6 is hung on the left frame 11 and the right frame 25 through four hanging strips 12 with equal length, the front end of the shaking plate 6 is arranged in a downward inclined state, and the left side and the right side of the shaking plate 6 are respectively provided with two hanging strips 12. The shaking plate 6 and the frame are connected by the equal-length hanging belts, so that the consistency of the motion tracks of the materials on the shaking plate 6 can be ensured, and the vibration damage of the shaking plate 6 to the frame can be reduced. In order to ensure that the stripping object can smoothly move from the rear part to the front end on the shaking plate, the included angle beta between the shaking plate 6 and the horizontal plane is larger than the friction angle between the stripping object and the shaking plate 6. To prevent the polarizer from appearing on the panel, it is preferable that the distance between the two straps 12 in the longitudinal direction of the panel 6 is greater than 1/2 and less than 3/4 of the panel length.

The shaking plate 6 is formed by welding a base plate 27 and a plurality of angle-shaped plates 26, the angle-shaped plates 26 are arranged along the front-rear direction of the base plate 27, and the angle-shaped plates 26 are arranged along the left-right direction of the base plate 27. The angle-shaped plate 26 and the bottom plate 27 form a right triangle structure, wherein the inclined side forms an included angle theta with the bottom plate 27, and the angle is equal to or larger than the friction angle between the stripping object and the bottom plate 27. The rear part of the shaking plate 6 is connected with a blocking plate 5, the blocking plate 5 is obliquely arranged backwards, the included angle between the blocking plate 5 and the bottom plate 27 is larger than 90 degrees and smaller than 90 degrees plus beta plus theta, and the blocking plate 5 is used for preventing the fallen objects from sliding out of the shaking plate 6.

The right side of the shaking plate 6 is connected with a crank mechanism, and the shaking plate 6 can be driven to reciprocate through the crank mechanism. The crank mechanism comprises a crank 17, a connecting plate 18, a driving shaft 14, a connecting shaft 20, a bolt shaft 22 and a chain wheel 15. The middle part of the right side of the shaking plate 6 is connected with a support 24, one end of a connecting plate 18 is hinged with a bolt shaft 22 through a third bearing 21, the bolt shaft 22 penetrates through the third bearing 21 and the support 24 and then is fixed through a nut 23, the other end of the connecting plate 18 is hinged with a connecting shaft 20 through a second bearing 19, one end of the connecting shaft 20 penetrates through the second bearing 19 and then is fixedly connected with the connecting plate 18 through a nut, the other end of the connecting shaft 20 penetrates through a crank 17 and then is fixed through a nut, the crank 17 is fixedly connected with a driving shaft 14, the driving shaft 14 penetrates through a first bearing 16 and then is installed on two supporting seats 13, the supporting seats 13 are installed on a right frame 25, the outer end of the driving shaft 14 is provided with a chain wheel 15, and a power mechanism can drive a crank mechanism to drive the shaking plate 6 to reciprocate through the chain wheel 15.

When the utility model works, the driving shaft 14 is driven by the chain wheel 15 to rotate and drives the crank 17 to rotate, the crank 17 drives the connecting shaft 20 to move, and the shaking plate 6 is driven by the connecting shaft 20 to reciprocate. The threshed objects separated from the rear part of the roller fall on the shaking plate 6 firstly, and the threshed objects separated from the rear part of the roller can return to the front part of the upper screen 7 through the shaking plate 6, so that the cleaning time of the threshed objects on the screen surface is prolonged, and the cleaning loss is reduced. The shaking plate 6 can realize that grains shaken to one side can not be shaken back to the other side through the horn-shaped plate 26 arranged on the upper part of the shaking plate in the reciprocating motion process, the uniformity of the distribution of the screen surface threshing materials is enhanced, and the problem of overlarge cleaning loss is reduced.

The fan 1, the guide plate 2, the concave plate 3, the threshing cylinder 4, the upper sieve 7, the lower sieve 8, the impurity and residue conveyor 9 and the kernel conveyor 10 in the embodiment are all the prior art. The material to be threshed is threshed under the action of the threshing cylinder 4 and the concave plate 3, part of the threshed grains fall onto the guide plate 2 and are conveyed to the upper sieve 7 through the guide plate 2 for cleaning; the other part of the threshed material is output through the back part of the roller and falls onto the shaking plate, and is sent to the upper sieve 7 by the shaking plate 6. Under the vibration action of the fan 1, the upper sieve 7 and the lower sieve 8, the threshed objects are cleaned, seeds are conveyed and collected by the seed conveyer 10, and the sundries are conveyed and collected by the sundries conveyer 9.

Other parts in this embodiment are the prior art, and are not described herein again.

Claims (6)

1. The utility model provides a harvester cleaning plant that threshes, is including setting up concave plate (3) in threshing cylinder (4) lower part, go up sieve (7), lower sieve (8), characterized by: concave board (3) with be provided with between last sieve (7) and shake board (6), shake board (6) and hang on left side frame (11) and right frame (25) through four equal long suspender (12), just shake board (6) front end downward sloping setting, the contained angle of shaking board (6) and horizontal plane is beta, the front end of shaking board (6) is located the rear portion of last sieve (7) front end, the rear end of shaking board (6) is located the rear portion of concave board (3), shake board (6) including bottom plate (27) and fixed the setting a plurality of horniness board (26) on bottom plate (27), horniness board (26) are followed the fore-and-aft direction setting of bottom plate (27), horniness board (26) with constitute the right triangle structure between bottom plate (27), wherein one side of shaking board (6) is connected with crank mechanism, the crank mechanism is connected to the frame on the corresponding side.

2. The harvester threshing and cleaning device of claim 1, characterized in that: the included angle beta between the shaking plate (6) and the horizontal plane is larger than the friction angle between the stripping material and the shaking plate.

3. The harvester threshing and cleaning device of claim 1, characterized in that: the distance between the two hanging belts (12) in the length direction of the shaking plate (6) is greater than 1/2 of the length of the shaking plate and less than 3/4 of the length of the shaking plate.

4. The harvester threshing and cleaning device of claim 1, characterized in that: the included angle theta between the bevel edge of the angular plate and the bottom plate is equal to or larger than the friction angle between the stripping object and the bottom plate.

5. A harvester threshing and cleaning unit according to claim 1, 2, 3 or 4, characterized in that: the rear part of the shaking plate (6) is connected with a blocking plate (5).

6. The harvester threshing and cleaning device of claim 5, characterized in that: the included angle between the blocking plate (5) and the bottom plate (27) is larger than 90 degrees and smaller than 90 degrees plus beta + theta.

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