阅读说明：本技术 一种适用于玉米籽粒收获的杂物清除装置 (Debris clearing device suitable for maize seed grain results ) 是由 张林强 徐双喜 张福成 吕世清 丁世立 梁雪 张俊叶 李双 付爽 张攀登 关仲 于 2020-04-22 设计创作，主要内容包括：本发明涉及一种适用于玉米籽粒收获的杂物清除装置,所述杂物清除装置整体设置于果穗输送器后端上方,且位于脱粒系统中脱粒滚筒前端上方；所述杂物清除装置包括作业箱,作业箱由左右两侧壁、顶板、底板和后侧板连接构成,形成前端开口的非封闭空间,在该非封闭空间内前后依次安装有拉茎机构、切断机构、输送排出机构。本发明通过集中于作业箱内的拉茎机构将混合在玉米果穗中的断茎秆、剥离的玉米叶等杂物喂入,实现果穗与杂物的分离；喂入的杂物被抛送至切断机构,通过切断机构进行切断处理,切断后的杂物被抛送至输送排出机构,被输送排出机体外,阻止了或减轻了断茎秆、玉米叶等杂物进入脱粒系统。(The invention relates to a sundries removing device suitable for harvesting corn kernels, which is integrally arranged above the rear end of an ear conveyor and above the front end of a threshing cylinder in a threshing system; the sundries removing device comprises an operation box, the operation box is formed by connecting a left side wall, a right side wall, a top plate, a bottom plate and a rear side plate to form a non-closed space with an opening at the front end, and a stem pulling mechanism, a cutting mechanism and a conveying and discharging mechanism are sequentially arranged in the non-closed space from front to back. The invention feeds sundries such as broken stalks, peeled corn leaves and the like mixed in corn ears through the stalk pulling mechanism concentrated in the operation box, thereby realizing the separation of the corn ears and the sundries; the fed sundries are thrown to a cutting mechanism and are cut off by the cutting mechanism, and the cut sundries are thrown to a conveying and discharging mechanism and are discharged outside the machine body, so that the sundries such as cut stems, corn leaves and the like are prevented or reduced from entering a threshing system.)

1. The utility model provides a debris clearing device suitable for maize seed grain results which characterized in that: the sundries removing device is integrally arranged above the rear end of the ear conveyor and is positioned above the front end of a threshing cylinder in the threshing system; the sundries removing device comprises an operation box, the operation box is formed by connecting a left side wall, a right side wall, a top plate, a bottom plate and a rear side plate to form a non-closed space with an opening at the front end, and a stem pulling mechanism, a cutting mechanism and a conveying and discharging mechanism are sequentially arranged in the non-closed space from front to back;

the stem pulling mechanism comprises an upper stem pulling roller and a lower stem pulling roller which are vertically aligned and arranged along the left-right direction, the upper stem pulling roller and the lower stem pulling roller are respectively and fixedly welded on an upper stem pulling roller shaft and a lower stem pulling roller shaft, a plurality of upper stem pulling convex ridges arranged along the left-right direction are uniformly distributed on the outer circumferential surface of the upper stem pulling roller, a plurality of lower stem pulling convex ridges arranged along the left-right direction are uniformly distributed on the outer circumferential surface of the lower stem pulling roller, and the plurality of upper stem pulling convex ridges and the plurality of lower stem pulling convex ridges are arranged in a staggered manner; the left end of the upper stalk-pulling roll shaft and the left end of the lower stalk-pulling roll shaft are rotatably supported on a left stalk-pulling bracket, the right end of the upper stalk-pulling roll shaft and the right end of the lower stalk-pulling roll shaft are rotatably supported on a right stalk-pulling bracket, one end of one stalk-pulling roll shaft is provided with a stalk-pulling power input chain wheel, and the other ends of the two stalk-pulling roll shafts are provided with an upper stalk-pulling gear and a lower stalk-pulling gear which are meshed with each other; the left stem pulling bracket and the right stem pulling bracket are respectively and fixedly arranged on the inner side of the left side wall and the inner side of the right side plate;

the cutting mechanism comprises a fixed cutter component arranged along the left-right direction and a movable cutter component arranged along the left-right direction, the fixed cutter component is arranged at the upper position, and the movable cutter component is arranged at the lower position of the front side of the fixed cutter component; the fixed cutter assembly consists of a fixed cutter seat and a fixed cutter blade which is detachably arranged on the front side of the fixed cutter seat, the cutting edge of the fixed cutter blade is arranged downwards, and two ends of the fixed cutter seat are fixed on the left cutting support and the right cutting support; the movable cutter component consists of a movable cutter shaft welded and a plurality of movable cutter blades which are detachably fixed on the welded peripheral surface of the movable cutter shaft in an evenly distributed manner, the movable cutter is arranged in a mode that a cutter edge faces outwards, two ends of the movable cutter shaft welded are rotatably supported on a left cutting support and a right cutting support, and the left cutting support and the right cutting support are fixedly installed on the inner side of the left side wall and the inner side of the right side plate respectively; a cutting power input chain wheel is arranged at the end of one welded end of the movable cutter shaft; the cutting power input chain wheel and the stalk-pulling power input chain wheel are respectively connected with two corresponding chain wheels arranged on a gap bridge main shaft of the fruit ear conveyor through a transmission chain.

The conveying and discharging mechanism comprises a conveying support, the conveying support is arranged along the left-right direction and is fixedly connected with the bottom plate and the rear side plate, the left end part or the right end part of the conveying support extends out of an opening formed in the side wall of the corresponding side to form a conveying and discharging end, a driving shaft assembly is installed at one end of the conveying support, a driven shaft assembly is installed at the other end of the conveying support, and a conveying belt is connected to the driving shaft assembly and the driven shaft assembly; one end of the driving shaft is connected with a hydraulic motor.

2. The corn kernel harvesting sundry removing device suitable for the corn kernel as claimed in claim 1, wherein: the left stem pulling support and the right stem pulling support are respectively connected with the left side wall and the right side wall of the frame body through bolts, bolt holes formed in the left side wall and the right side wall are long round holes extending in the up-down direction, and the left stem pulling support and the right stem pulling support are respectively and fixedly installed on the inner side of the left side wall and the inner side of the right side plate in a mode of being capable of being synchronously adjusted up and down.

3. The corn kernel harvesting sundry removing device suitable for the corn kernel as claimed in claim 1, wherein: the movable blades fixed on the movable blade shaft in a welded mode are divided into a left group and a right group, and the left group and the right group of the movable blades are arranged in a mode that the movable blades are staggered along the circumferential direction; each group of moving blades consists of three moving blades.

4. The sundries removing device suitable for harvesting corn kernels as claimed in claim 3, wherein: the movable cutter shaft welding device is characterized in that the movable cutter shaft welding device comprises a movable cutter shaft, a roller coaxially sleeved outside the movable cutter shaft and a plurality of movable cutter supporting blocks axially and uniformly sleeved outside the roller, wherein three movable cutter mounting surfaces are arranged on the peripheral surface of each movable cutter supporting block, and the three movable cutter mounting surfaces are arranged at an included angle of 120 degrees; the plurality of movable blade supporting blocks are divided into a left group and a right group, the movable blade supporting blocks in the same group are arranged at the same angle, and the left group and the right group of the movable blade supporting blocks are staggered at an included angle of 60 degrees.

5. The sundries removing device suitable for harvesting corn kernels according to claim 4, characterized in that: the left end of the movable cutter shaft is supported on a left bearing seat through a bearing, the right end of the movable cutter shaft is supported on a right bearing seat through a bearing, the left bearing seat is fixedly connected with the left cutting support or the left side wall of the frame body through a screw, the right bearing seat is fixedly connected with the right cutting support or the right side wall of the frame body through a screw, a screw hole formed in the left cutting support or the left side wall is a long circular hole extending in the vertical direction, a screw hole formed in the right cutting support or the right side wall is a long circular hole extending in the vertical direction, and the movable cutter assembly is arranged below the front side of the top cutter assembly in a mode that a cutting gap is adjustable relative to the fixed cutter assembly.

6. The corn kernel harvesting sundry removing device suitable for the corn kernel as claimed in claim 1, wherein: the pushing surface of the transmission belt is provided with a pushing ridge, and the upper end of the pushing ridge is in a tooth shape.

7. The corn kernel harvesting sundry removing device suitable for the corn kernel as claimed in claim 1, wherein: the conveying bracket is formed by connecting a left conveying bracket and a right conveying bracket; the left conveying support is a long support, and the right conveying support is a right support; the left conveying support consists of a left front side plate, a left rear side plate and a plurality of I-shaped connecting frames arranged between the left front side plate and the left rear side plate; the right conveying bracket consists of a right front side plate and a right rear side plate; a front connecting plate is arranged outside the right end part of the left front side plate and the left end part of the right front side plate, the right end parts of the front connecting plate and the left front side plate and the left end parts of the front connecting plate and the right front side plate are connected through bolts, and bolt holes arranged on the front connecting plate are oblong holes extending along the left-right direction; a rear connecting plate is arranged outside the right end part of the left rear side plate and the left end part of the right rear side plate, the right end parts of the rear connecting plate and the left rear side plate and the left end parts of the front connecting plate and the right rear side plate are connected through bolts, and bolt holes arranged on the rear connecting plate are long round holes extending along the left-right direction; the left end part of the left front side plate and the left end part of the left rear side plate are provided with two left bearing seats which are coaxially arranged, and two ends of the driven shaft assembly are supported on the two left bearing seats through bearings; two right side bearing seats which are coaxially arranged are installed at the right end part of the right front side plate and the right end part of the right rear side plate, and two ends of the driving shaft assembly are supported on the two right side bearing seats through bearings.

Technical Field

The invention belongs to a corn harvester, relates to a corn kernel harvesting technology, and particularly relates to a sundry removing device suitable for harvesting corn kernels.

Background

In the existing corn harvesting operation, the phenomenon that the ears, broken stalks and corn leaves simultaneously enter a conveying device and are conveyed into a threshing system together can occur along with the generation of broken stalks and peeled corn leaves when the ears are picked. Broken stalks and corn leaves can increase the workload of a threshing system, reduce the threshing efficiency of the ears and reduce the threshing effect of the ears, and broken stalks and corn leaves can enter a cleaning system along with separated grains, so that the load of the cleaning device is increased, and the cleanliness of the grains can be seriously influenced (the impurity rate is improved).

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the sundries removing device which can prevent or reduce sundries such as broken stalks, corn leaves and the like from entering a threshing system, can realize the purposes of reducing the load of the threshing system, improving the ear threshing efficiency, reducing the load of a cleaning device, improving the cleanliness of harvested grains and the like, and is suitable for harvesting corn grains.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a debris clearing device suitable for maize seed grain results which characterized in that: the sundries removing device is integrally arranged above the rear end of the ear conveyor and is positioned above the front end of a threshing cylinder in the threshing system; the sundries removing device comprises an operation box, the operation box is formed by connecting a left side wall, a right side wall, a top plate, a bottom plate and a rear side plate to form a non-closed space with an opening at the front end, and a stem pulling mechanism, a cutting mechanism and a conveying and discharging mechanism are sequentially arranged in the non-closed space from front to back;

the stem pulling mechanism comprises an upper stem pulling roller and a lower stem pulling roller which are vertically aligned and arranged along the left-right direction, the upper stem pulling roller and the lower stem pulling roller are respectively and fixedly welded on an upper stem pulling roller shaft and a lower stem pulling roller shaft, a plurality of upper stem pulling convex ridges arranged along the left-right direction are uniformly distributed on the outer circumferential surface of the upper stem pulling roller, a plurality of lower stem pulling convex ridges arranged along the left-right direction are uniformly distributed on the outer circumferential surface of the lower stem pulling roller, and the plurality of upper stem pulling convex ridges and the plurality of lower stem pulling convex ridges are arranged in a staggered manner; the left end of the upper stalk-pulling roll shaft and the left end of the lower stalk-pulling roll shaft are rotatably supported on a left stalk-pulling bracket, the right end of the upper stalk-pulling roll shaft and the right end of the lower stalk-pulling roll shaft are rotatably supported on a right stalk-pulling bracket, one end of one stalk-pulling roll shaft is provided with a stalk-pulling power input chain wheel, and the other ends of the two stalk-pulling roll shafts are provided with an upper stalk-pulling gear and a lower stalk-pulling gear which are meshed with each other; the left stem pulling bracket and the right stem pulling bracket are respectively and fixedly arranged on the inner side of the left side wall and the inner side of the right side plate;

the cutting mechanism comprises a fixed cutter component arranged along the left-right direction and a movable cutter component arranged along the left-right direction, the fixed cutter component is arranged at the upper position, and the movable cutter component is arranged at the lower position of the front side of the fixed cutter component; the fixed cutter assembly consists of a fixed cutter seat and a fixed cutter blade which is detachably arranged on the front side of the fixed cutter seat, the cutting edge of the fixed cutter blade is arranged downwards, and two ends of the fixed cutter seat are fixed on the left cutting support and the right cutting support; the movable cutter component consists of a movable cutter shaft welded and a plurality of movable cutter blades which are detachably fixed on the welded peripheral surface of the movable cutter shaft in an evenly distributed manner, the movable cutter is arranged in a mode that a cutter edge faces outwards, two ends of the movable cutter shaft welded are rotatably supported on a left cutting support and a right cutting support, and the left cutting support and the right cutting support are fixedly installed on the inner side of the left side wall and the inner side of the right side plate respectively; a cutting power input chain wheel is arranged at the end of one welded end of the movable cutter shaft; the cutting power input chain wheel and the stalk-pulling power input chain wheel are respectively connected with two corresponding chain wheels arranged on a gap bridge main shaft of the fruit ear conveyor through a transmission chain.

The conveying and discharging mechanism comprises a conveying support, the conveying support is arranged along the left-right direction and is fixedly connected with the bottom plate and the rear side plate, the left end part or the right end part of the conveying support extends out of an opening formed in the side wall of the corresponding side to form a conveying and discharging end, a driving shaft assembly is installed at one end of the conveying support, a driven shaft assembly is installed at the other end of the conveying support, and a conveying belt is connected to the driving shaft assembly and the driven shaft assembly; one end of the driving shaft is connected with a hydraulic motor.

Further: the left stem pulling support and the right stem pulling support are respectively connected with the left side wall and the right side wall of the frame body through bolts, bolt holes formed in the left side wall and the right side wall are long round holes extending in the up-down direction, and the left stem pulling support and the right stem pulling support are respectively and fixedly installed on the inner side of the left side wall and the inner side of the right side plate in a mode of being capable of being synchronously adjusted up and down.

Further, the method comprises the following steps of; the movable blades fixed on the movable blade shaft in a welded mode are divided into a left group and a right group, and the left group and the right group of the movable blades are arranged in a mode that the movable blades are staggered along the circumferential direction; each group of moving blades consists of three moving blades.

Further, the method comprises the following steps: the movable cutter shaft welding device is characterized in that the movable cutter shaft welding device comprises a movable cutter shaft, a roller coaxially sleeved outside the movable cutter shaft and a plurality of movable cutter supporting blocks axially and uniformly sleeved outside the roller, wherein three movable cutter mounting surfaces are arranged on the peripheral surface of each movable cutter supporting block, and the three movable cutter mounting surfaces are arranged at an included angle of 120 degrees; the plurality of movable blade supporting blocks are divided into a left group and a right group, the movable blade supporting blocks in the same group are arranged at the same angle, and the left group and the right group of the movable blade supporting blocks are staggered at an included angle of 60 degrees.

Further: the left end of the movable cutter shaft is supported on a left bearing seat through a bearing, the right end of the movable cutter shaft is supported on a right bearing seat through a bearing, the left bearing seat is fixedly connected with the left cutting support or the left side wall of the frame body through a screw, the right bearing seat is fixedly connected with the right cutting support or the right side wall of the frame body through a screw, a screw hole formed in the left cutting support or the left side wall is a long circular hole extending in the vertical direction, a screw hole formed in the right cutting support or the right side wall is a long circular hole extending in the vertical direction, and the movable cutter assembly is arranged below the front side of the top cutter assembly in a mode that a cutting gap is adjustable relative to the fixed cutter assembly.

Further: the pushing surface of the transmission belt is provided with a pushing ridge, and the upper end of the pushing ridge is in a tooth shape.

Further: the conveying bracket is formed by connecting a left conveying bracket and a right conveying bracket; the left conveying support is a long support, and the right conveying support is a short support; the left conveying support consists of a left front side plate, a left rear side plate and a plurality of I-shaped connecting frames arranged between the left front side plate and the left rear side plate; the right conveying bracket consists of a right front side plate and a right rear side plate; a front connecting plate is arranged outside the right end part of the left front side plate and the left end part of the right front side plate, the right end parts of the front connecting plate and the left front side plate and the left end parts of the front connecting plate and the right front side plate are connected through bolts, and bolt holes arranged on the front connecting plate are oblong holes extending along the left-right direction; a rear connecting plate is arranged outside the right end part of the left rear side plate and the left end part of the right rear side plate, the right end parts of the rear connecting plate and the left rear side plate and the left end parts of the front connecting plate and the right rear side plate are connected through bolts, and bolt holes arranged on the rear connecting plate are long round holes extending along the left-right direction; the left end part of the left front side plate and the left end part of the left rear side plate are provided with two left bearing seats which are coaxially arranged, and two ends of the driven shaft assembly are supported on the two left bearing seats through bearings; two right side bearing seats which are coaxially arranged are installed at the right end part of the right front side plate and the right end part of the right rear side plate, and two ends of the driving shaft assembly are supported on the two right side bearing seats through bearings.

The invention has the advantages and positive effects that:

the invention feeds sundries such as broken stalks, peeled corn leaves and the like mixed in corn ears through the stalk pulling mechanism concentrated in the operation box, thereby realizing the separation of the corn ears and the sundries; the fed sundries are thrown to a cutting mechanism and are cut off by the cutting mechanism, and the cut sundries are thrown to a conveying and discharging mechanism and are conveyed out of the machine body. The invention prevents or reduces the sundries such as broken stalks, corn leaves and the like from entering the threshing system, reduces the load of the threshing system, improves the threshing efficiency of the fruit ears, reduces the load of a cleaning device and improves the cleanliness of harvested grains.

Drawings

FIG. 1 is a side view of the present invention (with one side wall removed);

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

FIG. 3 is a schematic structural view of the stem-pulling mechanism of the present invention;

FIG. 4 is a schematic cross-sectional view of the stalk rolls of FIG. 3;

FIG. 5 is a schematic perspective view of the cutting mechanism of the present invention;

FIG. 6 is a schematic perspective view of the stationary knife shown in FIG. 5;

FIG. 7 is a perspective view of the movable blade of FIG. 5;

FIG. 8 is a schematic cross-sectional view of the moving blade;

FIG. 9 is a perspective view of the transport and discharge mechanism;

FIG. 10 is a top view of the transport discharge mechanism;

fig. 11 is a sectional view a-a of fig. 10.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.

A device for removing impurities suitable for harvesting corn kernels, please refer to fig. 1-11: the method is characterized in that:

the sundries removing device is integrally arranged above the rear end of the ear conveyor and is positioned above the front end of a threshing cylinder in the threshing system; the sundries removing device comprises an operation box 1, the operation box is formed by connecting a left side wall, a right side wall, a top plate, a bottom plate and a rear side plate to form a non-closed space with an opening at the front end, and a stem pulling mechanism 2, a cutting mechanism 3 and a conveying and discharging mechanism 4 are sequentially arranged in the non-closed space from front to back.

The stem pulling mechanism is shown in fig. 3 and 4, and has the specific structure that:

comprises an upper stem-drawing roller 2.1 and a lower stem-drawing roller 2.2, wherein the two stem-drawing rollers are arranged along the left and right direction and are aligned up and down. The upper stem-pulling roller and the lower stem-pulling roller are respectively fixedly welded on an upper stem-pulling roller shaft 2.8 and a lower stem-pulling roller shaft 2.9, a plurality of upper stem-pulling convex ridges 2.1.1 extending along the left-right direction are uniformly welded on the outer circumferential surface of the upper stem-pulling roller, a plurality of lower stem-pulling convex ridges 2.2.1 extending along the left-right direction are uniformly arranged on the outer circumferential surface of the lower stem-pulling roller, and the plurality of upper stem-pulling convex ridges and the plurality of lower stem-pulling convex ridges are arranged in a staggered manner; the left end of the upper stem-pulling roll shaft and the left end of the lower stem-pulling roll shaft are rotatably supported on the left stem-pulling support 2.6, the right end of the upper stem-pulling roll shaft and the right end of the lower stem-pulling roll shaft are rotatably supported on the right stem-pulling support 2.5, one end of one stem-pulling roll shaft is provided with a stem-pulling power input chain wheel 2.7, and the stem-pulling power input chain wheel is connected with a chain wheel arranged on a gap bridge main shaft of the ear conveyor through a transmission chain so as to transmit power to the stem-pulling roll. The other ends of the two stalk-pulling roll shafts are provided with an upper stalk-pulling gear 2.3 and a lower stalk-pulling gear 2.4 which are meshed with each other, so that the two stalk-pulling rolls can rotate oppositely. The left stem pulling support and the right stem pulling support are fixedly arranged on the inner side of the left side wall and the inner side of the right side wall of the operation box of the sundries removing device respectively.

In the above structure, further: the left stem pulling support and the right stem pulling support are respectively connected with the left side wall and the right side wall of the operation box through bolts, bolt holes formed in the left side wall and the right side wall are long round holes extending in the up-down direction, and the left stem pulling support and the right stem pulling support are respectively and fixedly installed on the inner side of the left side wall and the inner side of the right side plate in a mode of being capable of being synchronously adjusted up and down. The stem pulling mechanism can be synchronously adjusted at the upper position and the lower position of the sundries removing device, so that the adaptability adjustment of different varieties and different operation states is ensured, and better applicability is achieved.

The cutting mechanism, as shown in fig. 5-8, has the following specific structure:

including the stationary knife subassembly 3.1 that sets up along left right direction and the sword subassembly 3.2 that moves that sets up along left right direction, the stationary knife subassembly sets up in upper portion position, move the front side below position of sword subassembly setting at the stationary knife subassembly. The fixed cutter component is composed of a fixed cutter seat 3.1.1 and a fixed cutter blade 3.1.2 which is detachably arranged on the front side of the fixed cutter seat, the cutting edge of the fixed cutter blade is arranged downwards, and two ends of the fixed cutter seat are fixed on a left cutting support 3.5 and a right cutting support 3.3. The movable cutter component is composed of a movable cutter shaft welded and a plurality of movable cutter blades 3.2.4 which are detachably fixed on the welding peripheral surface of the movable cutter shaft in an evenly distributed manner, the movable cutter is arranged in a mode that a cutter edge faces outwards, two ends of the movable cutter shaft welded are rotatably supported on a left cutting support and a right cutting support, and the left cutting support and the right cutting support are fixedly installed on the inner side of the left side wall and the inner side of the right side plate of the operation box of the sundries removing device respectively; a power input cutting chain wheel 3.7 is arranged at the end of one welded end of the movable cutter shaft; the cutting power input chain wheel is connected with a chain wheel arranged on a gap bridge main shaft of the fruit ear conveyor through a transmission chain.

In the above structure, further; the movable blades fixed on the movable blade shaft in a welded mode are divided into a left group and a right group, and the left group and the right group of the movable blades are arranged in a mode that the movable blades are staggered along the circumferential direction; each group of moving blades consists of three moving blades. The staggered arrangement of the two groups of moving blades has the advantages that: and on the premise of ensuring the material flow stability, the power consumption per unit time is effectively reduced.

Further, the method comprises the following steps: the movable cutter shaft welding device is characterized in that the movable cutter shaft welding device comprises a movable cutter shaft 3.2.1, a roller 3.2.2 coaxially sleeved outside the movable cutter shaft and a plurality of movable cutter supporting blocks 3.2.3 uniformly distributed and sleeved outside the roller along the axial direction, the peripheral surface of each movable cutter supporting block is provided with three movable cutter mounting surfaces, and the three movable cutter mounting surfaces are arranged at an included angle of 120 degrees; the plurality of movable blade supporting blocks are divided into a left group and a right group, the movable blade supporting blocks in the same group are arranged at the same angle, and the left group and the right group of the movable blade supporting blocks are staggered at an included angle of 60 degrees.

In the above structure, further: the left end of the movable cutter shaft is supported on a left bearing seat 3.6 through a bearing, the right end of the movable cutter shaft is supported on a right bearing seat 3.4 through a bearing, the left bearing seat is fixedly connected with a left cutting support or the left side wall of the operation box through a screw, the right bearing seat is fixedly connected with a right cutting support or the right side wall of the operation box through a screw, a screw hole arranged on the left cutting support or the left side wall is a long circular hole extending in the vertical direction, a screw hole arranged on the right cutting support or the right side wall is a long circular hole extending in the vertical direction, and the movable cutter assembly is arranged at the lower position of the front side of the top cutter assembly in a mode that a cutting gap is adjustable relative to the fixed cutter assembly. The relative clearance of the movable cutter and the fixed cutter can be adjusted to ensure the adaptability adjustment of different varieties and different operation states.

The conveying and discharging mechanism, as shown in fig. 9-11, has the following specific structure:

the conveying device comprises a conveying support 4.4, the conveying support is arranged along the left-right direction and fixedly connected with a bottom plate and a rear side plate of an operation box of the sundries removing device, the left end part or the right end part of the conveying support extends out of an opening formed in the corresponding side wall of the operation box to form a conveying discharge end, a driving shaft assembly 4.6 is installed at one end of the conveying support, a driven shaft assembly 4.1 is installed at the other end of the conveying support, and a conveyor belt 4.2 is connected to the driving shaft assembly and the driven shaft assembly; a hydraulic motor, not shown in the drawings, is connected to one end of the drive shaft.

In the above structure, further: the pushing surface of the driving belt is provided with a pushing ridge 4.3, the upper end of the pushing ridge is in a tooth shape, and the pushing ridge plays a role in pushing materials, so that smooth output of the materials is facilitated. The pushing edge can be integrally formed with the conveying belt body, and is fixedly connected after being formed in a split mode.

In the above structure, further: the conveying bracket is formed by connecting a left conveying bracket 4.1 and a right conveying bracket 4.2; the left conveying support is a long support, and the right conveying support is a short support; the left conveying support consists of a left front side plate, a left rear side plate and a plurality of I-shaped connecting frames arranged between the left front side plate and the left rear side plate; the right conveying bracket consists of a right front side plate and a right rear side plate; a front connecting plate 4.5 is arranged outside the right end part of the left front side plate and the left end part of the right front side plate, the right end parts of the front connecting plate and the left front side plate and the left end parts of the front connecting plate and the right front side plate are connected through bolts, and bolt holes arranged on the front connecting plate are long round holes extending along the left-right direction; a rear connecting plate 4.7 is arranged outside the right end part of the left rear side plate and the left end part of the right rear side plate, the right end parts of the rear connecting plate and the left rear side plate and the left end parts of the front connecting plate and the right rear side plate are connected through bolts, and bolt holes arranged on the rear connecting plate are long round holes extending along the left-right direction; the left end part of the left front side plate and the left end part of the left rear side plate are provided with two left bearing seats which are coaxially arranged, and two ends of the driven shaft assembly are supported on the two left bearing seats through bearings; two right side bearing seats which are coaxially arranged are installed at the right end part of the right front side plate and the right end part of the right rear side plate, and two ends of the driving shaft assembly are supported on the two right side bearing seats through bearings. The conveying support adopts the combined support structure, and the length of the conveying support can be adjusted by adjusting the connecting positions of the left conveying support and the right conveying support and the front and rear connecting plates, so that the tension degree of the conveying belt can be conveniently adjusted under the condition that the tensioning mechanism is not increased.

The working principle of the sundries removing device is as follows:

the device is positioned above the rear side of the ear conveyor and above the front end of a threshing cylinder in the threshing system. When mixed materials such as ears, broken stalks, peeled corn leaves and the like picked by the header enter a threshing system through an ear conveyor, a stalk pulling mechanism of the device firstly grabs the broken stalks, the peeled corn leaves and other sundries, and the ears are separated from the broken stalks/corn leaves while thrown into the threshing system; the broken stalks, corn leaves and other impurities are sent to a cutting mechanism by a stalk pulling mechanism to finish the cutting/chopping, and are sent to a conveying and discharging mechanism under the throwing action of a rotary cutter; the conveying and discharging mechanism discharges the cut broken stalks/corn leaves out of the machine body.

In the description of the invention, it should be noted that the terms "left delivery stent" and "right delivery stent" are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.