CN211630867U

CN211630867U - Straw smashing and throwing device assembled with longitudinal axial flow roller harvester

Info

Publication number: CN211630867U
Application number: CN202020077225.8U
Authority: CN
Inventors: 张国忠; 付建伟; 周勇; 谢干; 邢赫; 王洋; 王伟康; 姚荣苗
Original assignee: Huazhong Agricultural University
Current assignee: Huazhong Agricultural University
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-09
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a straw smashing and throwing device assembled with a longitudinal axial flow roller harvester. The grass-receiving machine comprises a movable cutter case, a movable cutter roller and a grass-receiving plate, wherein the movable cutter roller and the grass-receiving plate are arranged in parallel at intervals, a plurality of fixed blades extend to the movable cutter roller from a gap between the grass-receiving plates, at least two movable sheath groups are arranged on the surface of the movable cutter roller along the circumferential direction, each movable sheath group comprises a plurality of movable cutter sheaths arranged at intervals along the axial direction of the movable cutter roller, a movable cutter extending back to the axis of the movable cutter roller is embedded in each movable cutter sheath, the moving track of the movable cutter sheath groups rotating along with the movable cutter roller is staggered with the fixed blades, the radial angle theta of the sliding side edge of the movable cutter and the radius of the top end of the sliding side edge of the movable cutter is smaller than 0 degrees and larger than-45 degrees, and the distance d between the sliding side edge of the movable cutter and the axis of the movable cutter roller is larger than. The invention can increase the centrifugal force of the chopped forage during rotation, and apply the thrust thrown to the grass guiding tail box to the chopped forage, thereby reducing the straws from winding the movable knife roller or the movable knife blade, and the chopped forage is easy to fall off.

Description

Straw smashing and throwing device assembled with longitudinal axial flow roller harvester

Technical Field

The utility model relates to an agricultural product results equipment technical field among the agricultural machine, concretely relates to device is smashed to straw and shed.

Background

The harvester is provided with the grass smashing mechanism, so that the straws can be effectively smashed and returned to the field, and the straw smashing device matched with the longitudinal axial flow roller harvester usually has the phenomena of grass blockage and uneven throwing. All adopt when current reducing mechanism rotor blade installation and rotor circumference perpendicular installation, thereby the straw twines easily on the blade holder and appears blockking up. The grass chopping is simply guided by the tail grass guide plate, so the throwing uniformity is not high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses thereby aim at solving the straw and twine the problem that the jam appears easily on the blade holder, consequently provide a straw and smash throwing device, the device can slow down garrulous grass and block up, improves and spills the degree of consistency, improves work efficiency.

In order to further realize the above purpose, the utility model adopts the following technical scheme: the utility model provides a smash throwing device with straw of axis of ordinates stream drum harvester assembly, is including moving cutter machine case, moving rotor, a plurality of grass receiving plate, and moving rotor and stationary knife seat grass receiving plate are at moving cutter machine incasement at interval parallel arrangement each other, and a plurality of grass receiving plate head and the tail both ends are connected and are followed and move cutter roll axial interval each other with moving under feeding mouth and the discharge gate of cutter machine case respectively, form the gap between grass receiving plate both sides, and the stationary blade is installed and is connect grass plate below and pass the gap stretches to moving rotor, moves cutter roll surface and sets up two at least movable sheath groups along circumferenceEach movable knife sheath group consists of a plurality of movable knife sheaths which are arranged along the axial direction of the movable knife roll at equal intervals, the opening direction of each movable knife sheath is back to the axis of the movable knife roll, a movable knife blade is embedded in each movable knife sheath, the moving track of the movable knife sheath group rotating along with the movable knife roll is staggered with the fixed knife blade, and the radial angle theta of the radius of the sliding cutting side edge of the movable knife blade and the radius of the top end of the sliding cutting side edge of the movable knife blade is smaller than that of the fixed knife blade

Is greater than

The distance d between the sliding cutting side edge of the movable blade and the axis of the movable knife roller is larger than half of the width of the movable blade.

Furthermore, the discharge hole of the movable cutter case is communicated with the feed inlet of the grass guiding tail case, the fan case is arranged below the movable cutter case, and air is supplied to the feed inlet of the grass guiding tail case from the lower part of the movable cutter case.

Furthermore, grass winding prevention rings are sleeved at two ends of the movable cutter roller and connected with side walls of the two machine boxes of the movable cutter machine box.

Furthermore, the fixed blade is rotatably fixed below the grass receiving plate, so that the sliding cutting angle of the fixed blade and the movable blade can be adjusted when the fixed blade and the movable blade are close to each other.

Further, connect grass board below to be equipped with the regulating plate that is on a parallel with the stationary blade, the regulating plate is equipped with the arc hole, stationary blade lower extreme regulating plate is articulated, the stationary blade is down along being supported by the locating pin that can follow the arc hole and remove, locating pin and regulating plate fastening connection.

Compared with the prior art, the utility model discloses following beneficial effect has: (1) in the utility model, the vertical distance d1 from the sliding cutting side edge of the movable blade to the axle center of the movable knife roll is not less than the radius of the movable knife roll, the centrifugal force during rotation can be increased, the included angle theta 1 formed by the sliding cutting side edge and the normal plane at the top end of the sliding cutting side edge of the movable blade can apply the thrust thrown to the grass guiding tail box to the chopped forage, the straws are reduced from winding the movable knife roll or the movable blade, and the chopped forage easily drops; (2) the utility model can change the sliding cutting angle when the movable and fixed blades contact by adjusting the position of the mounting adjusting plate provided with the arc-shaped hole, and adjust the optimal angle on site according to the grass chopping condition; (3) the utility model discloses install convenient installation formula centrifugal fan additional and can supply air for the exhaust garrulous grass of organism afterbody for garrulous grass is leading the grass tailboard control range in and is shed more evenly.

Drawings

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

FIG. 1 is a schematic view of the structure of the present invention in a certain direction;

FIG. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a left side view of the structure of the present invention;

FIG. 4 is a right side view of the structure of the present invention;

FIG. 5 is a schematic diagram of parameters of the sliding cutting side of the movable blade according to the embodiment;

FIG. 6 is a parameter diagram of the sliding cutting of the side edge of the moving blade of the comparative example.

Wherein: 1. 1-1 parts of a movable cutter case, 1-2 parts of an upper cover plate of a machine body, 1-3 parts of a side wall of the case and an anti-winding grass ring; 2. 2-1 parts of a movable knife roll, 2-2 parts of a knife roll, 2-3 parts of a movable knife base, 2-4 parts of a movable knife blade and a knife roll end cover; 3. 3-1 parts of a fixed cutter set, 3-2 parts of a fixed blade, 3-3 parts of a grass receiving plate, 3-4 parts of a positioning pin and an adjusting plate; 4. 4-1 parts of a centrifugal fan, 4-2 parts of a fan coaming, 4-3 parts of a fan mounting side plate, 4-4 parts of a fan shaft mounting plate and 4-4 parts of fan blades; 5. a centrifugal fan belt pulley; 6. a grass guiding tail box 6-1, a grass guiding upper cover plate 6-2, grass guiding side plates 1, 6-3 and an inner grass guiding plate; 7. a grass chopping belt wheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

The provided straw crushing and throwing device matched with the longitudinal axial flow roller harvester comprises a movable cutter case 1, a fan case and a grass guiding tail case 6, as shown in figures 1, 2, 3 and 4, wherein the movable cutter case 1 comprises case side walls 1-2 at the left side and the right side and a body upper cover plate 1-1 covering the upper part, the front side is provided with a feeding port, the rear side is provided with a discharging port, the lower side is communicated with the fan case, the fan case comprises a fan coaming 4-1 bent into a tubular shape and fan mounting side plates 4-2 positioned at the left side and the right side, the upper side of the fan coaming 4-1 is provided with an air outlet communicated with the movable cutter case 1, the rear side is provided with an air inlet, the fan mounting side plate 4-2 at one side is provided with a fan shaft mounting plate 4-3, one end of a fan shaft penetrates through a fan shaft mounting plate shaft comb to be connected with a centrifugal fan belt wheel 5, the rear side of the grass guiding side plate is communicated with the atmosphere, the grass guiding side plates 6-2 are laid on two sides of the grass guiding tail box 6, the grass guiding upper cover plate 6-1 is laid on the upper side of the grass guiding tail box 6, the fixed cutter seats 3-3 are arranged between the side walls 1-2 of the machine case on the lower side of the feeding port of the movable cutter case, the plurality of fixed cutter blades 3-1 are arranged at equal intervals along the longitudinal direction of the fixed cutter seats 3-3 and extend towards the movable cutter case, the front end and the rear end of the grass receiving plate 3-2 are respectively connected with the feeding port of the movable cutter case 1 and the lower edge of the discharging port, the grass receiving plates 3-2 are arranged on two sides of each fixed cutter blade 3-1 at intervals, the grass receiving plates 3-2 avoid crushed grass from directly falling and conduct preliminary guiding, the fan case supplies air to the feeding port of the grass guiding tail box.

Wherein, install the centrifugal fan 4 that is connected fixedly with the centrifugal fan band pulley 5 is coaxial in the fan case, move the knife roll 2 one end and stretch out and move the knife case and connect with grass chopping band pulley 7 is coaxial, and total power is imported by grass chopping band pulley 7, drives centrifugal fan 4 and moves knife roll 2 synchronously. The centrifugal fan 4 supplies air for the crushed grass discharged by the grass guiding tail box 6, so that the crushed grass is uniformly thrown in the control range of the grass guiding tail box 6.

The adjusting plate 3-4 is arranged below the grass receiving plate 3-2 in parallel to the fixed blade 3-1 and attached to the fixed blade 3-1, an arc-shaped hole is formed in the adjusting plate 3-4, the adjusting plate 3-4 at the lower end of the fixed blade 3-1 is hinged, the lower edge of the fixed blade 3-1 is supported by a positioning pin fixed in the arc-shaped hole, and the sliding cut angle when the fixed blade 3-1 is contacted with the movable blade 2-3 can be adjusted by adjusting the position of the positioning pin 3-3 in the arc-shaped hole.

Four movable sheath groups 2-1 are arranged on the surface of the movable knife roll 2 along the circumferential direction, each movable sheath group 2-1 is composed of a plurality of movable knife sheaths 2-2 which are arranged along the axial direction of the movable knife roll 2 at equal intervals, the opening direction of each movable knife sheath 2-2 is back to the axis of the movable knife roll 2, a movable knife blade 2-3 is embedded in each movable sheath 2-2, as shown in figure 5, the vertical distance d from the sliding cutting side edge 2-4 of the movable knife blade 2-3 to the axis of the movable knife roll 2 is larger than half of the width H of the movable knife blade, the centrifugal force of grass on any point on the sliding cutting side edge 2-4 during rotation can be increased, and the radial angle theta of the radius between the sliding cutting side edge 2-4 and the top end of the sliding cutting side edge of the movable knife blade 2-3

Is greater than

Two ends of the movable knife roll 2 are sleeved with grass winding prevention rings 1-3, and the grass winding prevention rings 1-3 are connected with the side walls 1-2 of the two cases to prevent grass chopping and winding. The moving track of the movable sheath group 2-1 and the fixed blade 3-1 are staggered.

Comparative example

According to the prior art CN203708870U, as shown in FIG. 6, the movable blades 2-3 are distributed along the radial direction of the movable blade roller 2, the vertical distance d from the sliding cutting side edges 2-4 of the movable blades 2-3 to the axis of the movable blade roller 2 is equal to half of the width H of the movable blade, and the radius of the sliding cutting side edges 2-4 and the top end of the sliding cutting side edges of the movable blades 2-3 forms a radial angle theta.

For the movable blades with the same length, d > H/2 in the embodiment 1 is far larger than d ═ H/2 in the comparative example, so that the distance from any point on the sliding-cut side of the movable blade in the embodiment 1 to the axis of the movable blade roller is larger than the distance from any point at the same position on the sliding-cut side of the movable blade in the comparative example to the axis of the movable blade roller, thus the movable blade roller 2 drives the movable blade to rotate at the same rotating speed, the linear speed on the sliding-cut side of the movable blade in the embodiment 1 is larger than that on the sliding-cut side of the movable blade in the comparative example. The centrifugal force experienced by the chopped forage on the moving blade of example 1 was greater than that experienced by the forage on the moving blade of the comparison. The distances from the top end of the movable blade to the roller center of the movable blade in the embodiment 1 and the embodiment 2 are L,

and the tangent value of the included angle theta in the comparative example is smaller than that of the included angle theta in the embodiment 1, so that the thrust of the chopped forage on the sliding cutting side edge of the movable blade in the embodiment 1 has larger component force along the radial direction and back to the axis of the movable knife roller 2, the forage is thrown out, the winding and detention of the straw on the movable blade are reduced, and the straw crushing and throwing device in the embodiment 1 is not easy to block.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood that the invention is not limited thereto, and that various modifications and changes can be made by those skilled in the art without departing from the principles of the invention.

Claims

1. A straw smashing and throwing device assembled with a longitudinal axial flow roller harvester comprises a movable cutter case, a movable cutter roller and a plurality of grass receiving plates, and is characterized in that the movable cutter roller and the grass receiving plates are arranged in the movable cutter case in parallel at intervals, the head ends and the tail ends of the grass receiving plates are respectively connected with the lower edge of a feeding port and the lower edge of a discharging port of the movable cutter case and are mutually spaced along the axial direction of the movable cutter roller, gaps are formed between the two sides of the grass receiving plates, fixed blades are arranged below the grass receiving plates and penetrate through the gaps to extend to the movable cutter roller, at least two movable sheath groups are arranged on the surface of the movable cutter roller along the circumferential direction, each movable sheath group consists of a plurality of movable cutter sheaths arranged along the axial direction of the movable cutter roller at equal intervals, the opening direction of the movable cutter sheaths faces away from the axial center of the movable cutter roller, a movable cutter blade is embedded in each movable cutter sheath, the moving track of the movable cutter sheath groups, the movable cutter sheath groups are mutually staggered with the fixed blades, the radius of the sliding cutting side edges of the movable cutter blades and the top ends of, the distance d between the sliding cutting side edge of the movable blade and the axis of the movable knife roller is larger than half of the width of the movable blade.

2. The straw crushing and throwing device assembled with the longitudinal axial flow roller harvester according to claim 1, wherein the discharge port of the movable cutter case is communicated with the feed port of the grass guiding tail case, and the blower case is arranged below the movable cutter case and supplies air to the feed port of the grass guiding tail case from the lower part of the movable cutter case.

3. The straw crushing and throwing device assembled with the longitudinal axial flow drum harvester according to claim 1, wherein grass winding prevention rings are sleeved at two ends of the movable knife roller and connected with the side walls of the two movable knife cases.

4. The straw chopping and throwing device assembled with the longitudinal axial flow drum harvester according to claim 1, wherein the fixed blade is rotatably fixed below the grass receiving plate, so that a sliding cutting angle of the fixed blade and the movable blade when approaching is adjustable.

5. The straw crushing and throwing device assembled with the longitudinal axial flow roller harvester according to claim 4, wherein an adjusting plate parallel to the fixed blade is arranged below the straw receiving plate, the adjusting plate is provided with an arc-shaped hole, the adjusting plate at the lower end of the fixed blade is hinged, the lower edge of the fixed blade is supported by a positioning pin capable of moving along the arc-shaped hole, and the positioning pin is fixedly connected with the adjusting plate.