CN214508084U - Adjustable concave plate sieve structure and combine harvester - Google Patents

Abstract

The utility model provides a concave plate sieve structure and combine with adjustable sets up spacing regulation structure in the opening department that forms between the outer sifter of two concave plate sieves and the transition sieve board, and spacing regulation structure detachably fixes on the concave plate sieve of both sides. When the limiting adjusting structure is not arranged, part of crops fall into the vibrating screen below from the opening after passing through the first concave screen and directly enter the subsequent process.

Description

Adjustable concave plate sieve structure and combine harvester

Technical Field

The utility model relates to the technical field of agricultural machinery, concretely relates to concave plate sieve structure and combine with adjustable.

Background

The threshing system of the crawler-type combine harvester can be divided into a longitudinal axial flow type threshing and cleaning system and a transverse axial flow type threshing and cleaning system, and the threshing and cleaning systems in the two forms are the main structural forms used in the current market.

The existing transverse-axial flow type threshing and cleaning system is divided into a single-roller transverse-axial flow threshing and cleaning system and a 1.5-roller transverse-axial flow threshing and cleaning system. The single roller threshes through one roller, and the crop has only one roller length. In the 1.5 roller system, a feeding roller with the length of only half of that of the single roller is additionally arranged in front of the single roller, namely the additionally arranged half roller only plays the role of continuously feeding crops and hardly plays the role of threshing, so that the conventional transverse-axial flow type threshing and cleaning system has shorter threshing stroke. The corresponding recess screen arranged below the front drum has little screening effect.

When the variety is difficult to thresh, the threshing and screening paths are too short, which easily causes that part of fed crop grains are discharged out of the machine body without being screened out in time, thereby causing loss.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the concave plate sieve screening route of corresponding cylinder among the prior art and is short, causes the crop loss easily.

Therefore, the utility model provides a concave plate sieve structure with adjustable, include:

the two concave plate sieves are arranged in parallel in the horizontal direction at intervals, and the inner sieve surface of any concave plate sieve is in an arc shape;

one ends of the two concave plate sieves, which are positioned on the same side of the rack, are provided with transition ports along the radial direction; the two transition ports are opposite and communicated with each other;

the transition plate screen is laid between the two concave plate screens and is connected with the two transition ports;

a feeding port for crops is arranged on the other end of the concave plate sieve, which is opposite to the transition port and far away from the transition port;

and the limiting adjusting structure is detachably arranged at the gap formed between the outer screen surfaces of the two concave plate screens and the transition plate screen.

Spacing regulation structure includes:

and the sealing plate is matched with the shape of the notch, and two sides of the sealing plate are respectively fixed on the two concave plate sieves.

The spacing structure of adjusting still includes:

the two adjusting pieces are integrally in an arc shape and are respectively fixed on the two concave plate sieves at the two sides of the opening; two sides of the sealing plate are respectively fixed on the two adjusting pieces.

Any of the adjustment members comprises:

the surface of the adjusting plate is in an arc shape matched with the concave plate screen fixed by the adjusting plate; the surface of the adjusting plate is suitable for partially plugging the transition port;

the two mounting plates are arranged along the adjusting plate in a bending way and are respectively fixed on two opposite sides of the adjusting plate; one of the mounting plates is adapted to be fixed to the recessed plate screen, and the other mounting plate is adapted to be fixedly connected to the sealing plate.

The cross section of the adjusting piece is Contraband type.

Any of the recess screens comprises:

two side guard plates respectively in arc shapes; the two side guard plates are coaxial and are arranged oppositely;

the two connecting beams are bridged between the two side protection plates and are connected with the end parts of the side protection plates;

the grid bars are arranged in parallel with the connecting beam and are fixedly bridged between the two side guard plates; a plurality of through holes are formed in any grid strip at intervals;

the plurality of steel wires are respectively arranged in parallel with the side guard plate and sequentially penetrate through the through holes in the grid strips; two ends of the steel wire are respectively fixed on the connecting beam or the grid strip;

all the grid bars and the steel wires are crossed to form a grid-shaped screen surface.

In a plurality of grid units formed by intersecting all the grid strips and the steel wires, the area of any grid unit in the concave plate sieve where the feed opening is located is smaller than that of the other grid unit in the concave plate sieve.

Further comprising:

and the reinforcing ribs and the side guard plate are arranged in parallel and fixed on the outer screen surface at intervals.

The transition plate screen comprises:

the screen frame is of a square structure;

the grid bars are arranged in the screen frame at intervals along the transverse direction; a plurality of through holes are formed in any grid strip at intervals;

and the steel wires are longitudinally arranged in the screen frame and sequentially penetrate through the through holes in the grid strips.

The utility model provides a combine harvester, including the aforesaid adjustable notch board sieve structure.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a concave plate sieve with adjustable, the opening department that forms between the outer sifter of two concave plate sieves and transition sieve plate sets up spacing regulation structure, and spacing regulation structure detachably fixes on the concave plate sieve of both sides. When the limiting adjusting structure is not arranged, part of crops fall into the vibrating screen below from the opening after passing through the first concave screen and directly enter the subsequent process.

2. The utility model provides a concave plate sieve with adjustable, spacing regulation structure includes the regulating plate and sets up the mounting panel in the regulating plate both sides. The plate surface of the adjusting plate is in a circular arc shape matched with the concave plate screen, the plate surface of the adjusting plate is suitable for partially blocking the transition opening, the sizes of the plate surfaces with different widths can be selected according to requirements, so that the size of the transition opening passing through crops can be adjusted, the transmission path of the crops is partially prolonged, and the threshing, separating and screening time of the crops is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a first schematic structural view of an adjustable concave screen structure according to an embodiment of the present invention;

FIG. 2 is a first schematic view of an adjustable concave screen assembly according to an embodiment of the present invention;

FIG. 3 is a schematic view of an assembly structure of an adjustable concave screen structure according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a second adjustable concave screen structure according to an embodiment of the present invention;

fig. 5 is a third schematic structural view of an adjustable concave screen structure in an embodiment of the present invention.

Description of reference numerals:

1. a frame; 11b, assembling the beam; 2b, a first concave plate sieve; 21b, a feeding port; 3b, a second concave plate sieve; 4b, side guard plates; 41b, steel wires; 5b, connecting the beams; 51b, grid bars; 6b, a transition port; 7b, a transition plate sieve; 8b, reinforcing ribs; 9b, sealing plates; 91b, an adjusting plate; 92b, a mounting plate; 10b, opening;

2a, a first roller; 3a, a second roller; 2c, a first cylinder cover; 3c and a second cylinder cover.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The embodiment provides a concave screen structure with adjustable, including two concave screens, be respectively for setting up the first concave screen 2b of dog-house 21b and the second concave screen 3b that sets up adjacent with first concave screen 2b in the crop transmission direction, first concave screen 2b is the same with the length of second concave screen 3b, and the length in screening district is the same promptly. The inner sieve surface of each concave sieve is arc-shaped, the axes of the two concave sieves are parallel to each other and are fixed on the frame 1 at intervals along the horizontal direction.

As shown in fig. 1, each recess screen includes two side guard plates 4b, two connecting beams 5b, a plurality of grid bars 51b, a plurality of steel wires 41b, and a plurality of reinforcing ribs 8 b. The two side guard plates 4b are respectively arc-shaped, the side guard plates 4b are coaxial and are arranged oppositely, two end parts of the two side guard plates 4b are welded and fixed together through the connecting beams 5b, and an installation space is enclosed between the two side guard plates 4b and the two connecting beams 5 b. In this embodiment, the grid strips 51b and the connecting beam 5b are arranged in parallel and fixed between the two side guard plates 4b in a bridging manner, the intervals between the adjacent grid strips 51b are the same, and the grid strips are uniformly spaced and radially distributed along the side guard plates 4b, that is, the plane where each grid strip 51b is located intersects with the axis of the concave screen, and the circle center of the arc where the side guard plate 4b is located on the axis. A plurality of through holes are uniformly formed in each grid strip 51b at intervals, the steel wires 41b are arranged in parallel with the side protection plate 4b and sequentially penetrate through the through holes in each grid strip 51b, and two ends of each steel wire 41b are respectively fixed on the connecting beam 5b or the grid strips 51 b. All the grid bars 51b and the steel wires 41b mutually intersect to form a plurality of grid units, and all the grid units form a grid-shaped screen surface together. In this embodiment, the reinforcing ribs 8b are arranged parallel to the side guard plates 4b and are fixed to the outer screening surface at spaced intervals. The grid bars 51b are welded and fixed to the side guard plates 4b on both sides, and the reinforcing ribs 8b are also welded and fixed to all the grid bars 51 b.

In this embodiment, the separation wrap angles of the first concave screen 2b and the second concave screen 3b are both 180 degrees, that is, the side guard plate 4b is in a semicircular arc shape as a whole. The space on the upper part of the concave sieve when the separation wrap angle is larger than 180 degrees is wasted, and then the radian is arranged on the upper part of the concave sieve, so that grains are thrown out of the concave sieve from the upper part and can fall into the concave sieve again when falling, and the cleaning effect is influenced. When the angle is less than 180 degrees, the area of the screen surface is reduced, and the cleaning effect is also influenced.

In this embodiment, the area of the grid cells in the first concave screen 2b is smaller than the area of the grid cells in the second concave screen 3b, so that only crop seeds pass through the first concave screen 2b, the second concave screen is suitable for passing through the seeds and other fine impurities, and the seeds are prevented from being entrained by the impurities and discharged from the grass discharge port, thereby causing loss. Specifically, the distance between two adjacent grid bars 51b in two concave screens is the same, and the distance between two adjacent steel wires 41b in the second concave screen 3b is larger than the distance between two adjacent steel wires 41b in the first concave screen 2 b; or, when the distance between two adjacent steel wires 41b in two concave screens is the same, the distance between two adjacent grid bars 51b in the second concave screen 3b is greater than the distance between two adjacent grid bars 51b in the first concave screen 2 b; or the spaces between the adjacent grid bars 51b and the adjacent steel wires 41b in the second concave screen 3b are larger than the spaces between the adjacent grid bars 51b and the adjacent steel wires 41b in the first concave screen 2 b. Of course, the steel wires 41b in each recess screen may be drawn out at intervals as required to increase the area of the grid cells.

As shown in fig. 1, the two concave plate sieves are respectively provided with transition openings 6b and are communicated with each other through the transition openings 6b, the transition plate sieve 7b is laid between the two transition openings 6b, the transition plate sieve 7b comprises a sieve frame, the sieve frame is in a square structure, grid bars 51b are transversely and uniformly arranged in the sieve frame at intervals, similarly, any grid bar 51b is uniformly provided with a plurality of through holes at intervals, and steel wires 41b sequentially penetrate through the through holes on the grid bars 51b along the longitudinal direction. Wherein, the width direction of the square screen frame is horizontal, and the length direction is vertical. The feeding port 21b is arranged on the side, opposite to the transition port 6b and far away from the transition port 6b, of the first concave screen 2b, and a transmission path of the crops entering the concave screen from the feeding port 21b is in a shape of a Chinese character 'ji'.

As shown in fig. 2, three mounting beams 11b are provided at intervals on the frame 1, and the first concave screen 2b is fixed between the first and second mounting beams 11b by overlapping the connecting beams 5b on both sides, and similarly, the second concave screen is fixed between the second and third mounting beams 11b by overlapping the connecting beams 5b on both sides. The transition port 6b is arranged close to the frame 1 on one side. The structural design can improve the threshing and screening path of crops through the concave plate sieve while ensuring the compact layout of the two concave plate sieves on the harvester frame 1, thereby greatly improving the whole maneuverability and threshing effect of the harvester.

As shown in fig. 3, a first threshing space is enclosed between the first cylinder cover 2c and the first concave sieve 2b, the first roller 2a is installed in the first threshing space, and a gap is formed between the first concave sieve 2b and the end surface of the poking teeth of the first roller 2 a. A second threshing space is enclosed between the second cylinder cover 3c and the second concave plate sieve 3b, the second roller 3a is arranged in the second threshing space, and meanwhile, a gap is formed between the second concave plate sieve 3b and the end face of the stirring teeth of the second roller 3 a. The transition port 6b is communicated with the first threshing space and the second threshing space, and crops enter the second threshing space from the first threshing space through the transition plate screen 7 b.

As shown in fig. 4, a limiting and adjusting structure is arranged at a gap 10b formed between the outer screen surface of the two concave screens and the transition screen plate, and the limiting and adjusting structure is detachably fixed on the first concave screen 2b and the second concave screen 3b at two sides. When the limiting adjusting structure is not arranged, part of crops fall into the vibrating screen below from the opening 10b after passing through the first concave screen 2b and directly enter the subsequent process, and when the limiting adjusting structure is arranged, the crops enter the second concave screen 3b from the first concave screen 2b through the transition screen 7b and move towards a complete 'n' -shaped direction, the transmission path is longer, and the threshing screening effect is better.

In this embodiment, the limiting and adjusting structure comprises a sealing plate 9b, and the shape of the sealing plate 9b is matched with that of the opening 10 b. Further, the adjusting device further comprises an adjusting member for connecting the sealing plate 9b and the two concave screens, as shown in fig. 4 and 5, the adjusting member comprises an adjusting plate 91b and two mounting plates 92b fixed on two sides of the adjusting plate 91b, the surface of the adjusting plate 91b is arc-shaped and matched with the concave screens fixed on the adjusting plate 91b, the two mounting plates 92b are arranged along the adjusting plate 91b in a bending manner and fixed on two opposite sides of the adjusting plate 91b respectively, one mounting plate 92b is used for fixedly connecting the concave screens, and the other mounting plate 92b is used for fixedly connecting the sealing plate 9 b. In this embodiment, the cross section of the adjusting member is Contraband type, and the adjusting plate 91b and the mounting plates 92b on both sides are integrally formed. The plate surface of the adjusting plate 91b is suitable for partially blocking the transition opening 6b, and the adjusting plate 91b can select plate surface sizes with different widths according to requirements so as to realize the adjustment of the size of the transition opening 6b passing through crops, thereby partially prolonging the transmission path of the crops and prolonging the threshing, separating and screening time of the crops.

Example 2

This embodiment provides a combine harvester comprising the adjustable recess screen structure of embodiment 1.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. An adjustable recess screen structure, comprising:

the two concave plate sieves are arranged in parallel in the horizontal direction at intervals, and the inner sieve surface of any concave plate sieve is in an arc shape;

one ends of the two concave plate sieves, which are positioned at the same side of the frame, are provided with transition ports (6b) along the radial direction; the two transition ports (6b) are opposite and communicated with each other;

a transition plate screen (7b) which is laid between the two concave plate screens and is connected with the two transition openings (6 b);

a feeding port (21b) for crops is arranged on the other end of the concave plate sieve, which is opposite to the transition port (6b) and far away from the transition port (6 b);

and the limiting adjusting structure is detachably arranged at a gap (10b) formed between the outer screen surfaces of the two concave plate screens and the transition plate screen (7 b).

2. The adjustable recess screen structure of claim 1, wherein the limit adjustment structure comprises:

and the closing plates (9b) are matched with the shape of the notches (10b), and two sides of each closing plate are respectively fixed on the two concave plate sieves.

3. The adjustable recess screen structure of claim 2, wherein the limit adjustment structure further comprises:

the two adjusting pieces are integrally in an arc shape and are respectively fixed on the two concave plate sieves at the two sides of the opening (10 b); two sides of the sealing plate (9b) are respectively fixed on the two adjusting pieces.

4. An adjustable recess screen construction as claimed in claim 3, wherein any one of the adjustment members comprises:

the surface of the adjusting plate (91b) is in an arc shape matched with the concave plate screen fixed by the adjusting plate; the surface of the adjusting plate (91b) is suitable for partially blocking the transition port (6 b);

two mounting plates (92b) which are arranged along the adjusting plate (91b) in a bending way and are respectively fixed on two opposite sides of the adjusting plate (91 b); one of the mounting plates (92b) is adapted to be secured to the recess screen and the other mounting plate (92b) is adapted to be fixedly connected to the sealing plate (9 b).

5. An adjustable recess screen construction as claimed in claim 4, wherein the cross-section of the adjustment member is Contraband shaped.

6. An adjustable recess screen structure as claimed in any one of claims 1 to 5, wherein any one of the recess screens comprises:

two side guard plates (4b) each having an arc shape; the two side guard plates (4b) are coaxial and are arranged oppositely;

two connecting beams (5b) which are bridged between the two side protection plates (4b) and are connected with the end parts of the side protection plates (4 b);

a plurality of grid bars (51b) which are arranged in parallel with the connecting beam (5b) and are fixed between the two side protection plates (4b) in a bridging manner; a plurality of through holes are formed in any grid strip (51b) at intervals;

the steel wires (41b) are respectively arranged in parallel with the side protection plate (4b) and sequentially penetrate through the through holes in the grid bars (51 b); two ends of the steel wire (41b) are respectively fixed on the connecting beam (5b) or the grid bars (51 b);

all the grid bars (51b) and the steel wires (41b) are crossed to form a grid-shaped screen surface.

7. Adjustable concave screen structure according to claim 6, wherein the area of any grid unit in the concave screen where the feeding opening (21b) is located is smaller than the area of the grid unit in the other concave screen, of the grid units formed by the intersection of all the grid bars (51b) and the steel wires (41 b).

8. The adjustable recess screen structure of claim 6, further comprising:

and the reinforcing ribs (8b) are arranged in parallel with the side guard plate (4b) and are fixed on the outer screen surface at intervals.

9. Adjustable recess screen construction according to any of claims 1-5, characterized in that the transition screen (7b) comprises:

the screen frame is of a square structure;

a plurality of grid bars (51b) arranged in the screen frame at intervals along the transverse direction; a plurality of through holes are formed in any grid strip (51b) at intervals;

and the steel wires (41b) are arranged in the screen frame along the longitudinal direction and sequentially pass through the through holes in the grid bars (51 b).

10. A combine harvester comprising an adjustable recess screen construction according to any one of claims 1 to 9.

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