CN115152436A - Nested adjustable airflow auxiliary anti-blocking threshing cylinder - Google Patents

Abstract

The invention discloses a nested adjustable airflow auxiliary anti-blocking threshing cylinder which comprises a cylinder rack, wherein a threshing device and an airflow auxiliary device are connected to the cylinder rack; the threshing device comprises a concave sieve with adjustable clearance, a rasp rod device with adjustable diameter, a spike-tooth device and a threshing roller shaft, the threshing roller shaft is connected to the roller frame, the spike-tooth device is nested in the rasp rod device and connected to the threshing roller shaft, the rasp rod device and the airflow auxiliary device share one hydraulic air pump, and the airflow auxiliary device comprises an air net, an air shell and an adjusting valve. The threshing machine is ingenious in design, compact in layout due to the adoption of a nested structure, and the size of the whole threshing machine is effectively reduced on the premise of ensuring the threshing quality; the threshing device is matched with an airflow auxiliary device, so that the threshing effect is effectively improved, the threshing rate is improved, and the threshing blockage is prevented.

Description

Nested adjustable airflow auxiliary anti-blocking threshing cylinder

Technical Field

The invention relates to the technical field of agricultural threshing equipment, in particular to a nested adjustable airflow auxiliary anti-blocking threshing cylinder.

Background

As most of the crop harvesting and threshing stages are in rainy seasons, the water content difference between the crop spike head and the straw is large, the crop types are large, the straw has strong toughness, is easy to wind on the threshing cylinder or is knotted and wound by the straw, and is blocked between the concave screen and the threshing cylinder to cause blockage, so that the traditional threshing cylinder is incomplete in threshing and damages threshing parts, and the threshing of the machine is influenced.

Traditional threshing cylinder diameter is not adjustable, interval between threshing cylinder and the concave sieve is fixed, the clearance of concave sieve is not adjustable, do not have safety arrangement and prevent stifled device, traditional threshing cylinder only has simple mechanical device, do not have other supplementary thresher, cause threshing cylinder function singleness, only be adapted to a crop and thresh, be not suitable for different moisture content crops and different seed grain diameter crop to thresh, and traditional threshing cylinder is longer, shorten and break away from the cylinder diameter, then influence threshing effect, extension threshing cylinder diameter, then unsuitable with the small-size operation machinery in hills mountain region, it is adjustable to study a threshing cylinder diameter, concave sieve clearance is adjustable, other device are supplementary thresh and shorten the cylinder diameter as far as possible and do not influence threshing effect's threshing cylinder is must the trend.

Disclosure of Invention

The invention aims to provide a nested adjustable airflow auxiliary anti-blocking threshing cylinder, which improves threshing performance and adaptability.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention discloses a nested adjustable airflow auxiliary anti-blocking threshing cylinder which comprises a cylinder rack, wherein a threshing device and an airflow auxiliary device are connected to the cylinder rack, the threshing device is connected to the upper part of the cylinder rack through a bearing with a seat, the airflow auxiliary threshing device is arranged outside the threshing cylinder, and the airflow auxiliary device is fixedly connected to the cylinder rack through bolts.

Furthermore, the threshing device comprises a concave sieve with adjustable clearance, a rasp bar device with adjustable diameter, a spike tooth device and a threshing roller shaft, the threshing roller shaft is rotatably connected to the roller frame, the spike tooth device is connected to the threshing roller shaft, the rasp bar device with adjustable diameter is arranged outside the spike tooth device, the spike tooth device is nested inside the rasp bar device, and the rasp bar device and the airflow auxiliary device share one hydraulic air pump; the concave sieve is connected to the inner side of the roller frame through a bolt, the concave sieve is located below the rasp bar device, and a driving end of the threshing roller shaft is provided with a spline for transmission connection with the combine harvester.

Furthermore, the spike tooth device comprises a spike tooth turntable I, a spike tooth turntable II and spike teeth, two ends of the spike teeth are respectively connected to the spike tooth turntable I and the spike tooth turntable II through bolts, and the spike tooth turntable I and the spike tooth turntable II are connected to two ends of the threshing drum shaft through positioning keys;

the rasp bar device comprises a feeding head, a rasp bar and a rasp bar rotary table, the feeding head and a flange plate are coaxially matched, the flange plate is connected to the roller frame through a screw, the flange plate is connected with one end, provided with a spline, of the threshing roller shaft through a self-contained bearing, the rasp bar rotary table is connected to the outer side of the spike-tooth rotary table II through a mounting bearing, and two ends of the rasp bar are adjustably connected to the feeding head and the rasp bar rotary table; the inner wall of the feeding head is in transmission connection with the threshing roller shaft through a planetary gear set and drives the rasp bar to rotate, and an adjusting driving assembly is arranged between the rasp bar and the rasp bar turntable.

Furthermore, the planetary gear set comprises a gear ring, a sun gear and planet gears, the sun gear is connected to the threshing roller shaft through a positioning key, the two planet gears are connected to the end face of the inner side of the flange plate, the gear ring is connected to the inside of the feeding head through a bolt, and the sun gear is in transmission connection with the gear ring through the planet gears.

Furthermore, the first spike-tooth rotating disc is nested in the feeding head, and one surface of the feeding head, on which the threaded rod is fixed, is flush with the first spike-tooth rotating disc.

Furthermore, the adjusting and driving assembly comprises an air disc shell, an air push rod and a safety valve, the air disc shell is connected to the roller frame through a bolt, the air disc shell and the threaded rod turntable are coaxially matched and connected and are positioned on the inner side of the threaded rod turntable, air grooves are formed in the threaded rod turntable and the air disc shell, and a sealing ring is arranged on the matching surface of the threaded rod turntable and the air disc shell; the rasp bar comprises a rasp bar body and a connecting seat, two ends of the connecting seat are perpendicularly connected, an adjusting sliding groove is formed in the connecting seat, the bottom end of an air push rod is fixed to a rasp bar rotating disc through a bolt, one end of a piston push rod of the air push rod is connected with the rasp bar body, an air port of the air push rod is communicated with an air groove of the rasp bar rotating disc, the air groove of the rasp bar rotating disc is communicated with a hydraulic air pump through a first pipeline, and a safety valve is arranged on the first pipeline.

Furthermore, the nail teeth are uniformly distributed in a plurality of circumferential directions, the corrugated rods are uniformly distributed in a plurality of circumferential directions, and the corrugated rods surround the outer sides of the nail teeth; the air push rod extends or contracts to drive the corrugated rod to move outwards or inwards to change the size of the outer contour, and the distance between the corrugated rod and the spike teeth and the distance between the corrugated rod and the concave plate sieve are changed synchronously.

Furthermore, a straw guide plate is arranged on the inner side surface of the rasp bar.

Further, the concave sieve includes concave shelf, regulating spindle, adjusting vane, regulation pendulum rod, regulation chain link, connecting pin, return spring and adjusting rod, the concave shelf passes through the bolt and installs the inboard in the cylinder frame, the one end of regulating spindle and adjusting vane pass through diamond hole cooperation to evenly arrange on the concave shelf, the other end of regulating spindle with the cooperation of regulation pendulum rod, the other end of regulating spindle be spherical and with adjusting chain link ball joint be connected, form soft connection through the connecting pin between the regulation chain link and form the regulation chain, a both ends of adjusting the chain are connected with the cylinder frame through return spring, adjusting rod respectively.

Furthermore, the airflow auxiliary device comprises an air net and an air shell, the air net is arranged above the rasp bar device, the air shell is positioned above the air net, and the air net and the air shell are tightly matched and connected to the roller frame through bolts; and the air net is provided with two groups of exhaust holes, the two groups of exhaust holes are communicated with the hydraulic air pump through a third pipeline, a second pipeline and an adjusting valve, the adjusting valve is connected between the second pipeline and the third pipeline, and the adjusting valve is connected with an adjusting handle.

Compared with the prior art, the invention has the beneficial technical effects that:

the invention discloses a nested adjustable airflow auxiliary anti-blocking threshing cylinder which comprises a cylinder rack, wherein a threshing device and an airflow auxiliary device are connected onto the cylinder rack, the threshing device comprises a concave sieve with adjustable gaps, a threaded rod device with adjustable diameters, a spike tooth device and a threshing cylinder shaft, the threshing cylinder shaft is connected onto the cylinder rack, the spike tooth device is nested in the threaded rod device and connected onto the threshing cylinder shaft, the threaded rod device is communicated with the airflow auxiliary device, and a spline for transmission connection with a combine harvester is arranged at the driving end of the threshing cylinder shaft. The crops fed by the harvester are enabled to cling to the concave sieve with adjustable gaps under the action of air flow in the air flow auxiliary device, and are rubbed with each other through the rasp bar device and the concave sieve to finish primary threshing; part of seed capsules are screened by a concave plate sieve and fall into a conveyor, straws are wound together to wrap materials with seeds and the materials are brought to the top by the threaded rod rotation, the materials enter a spike-tooth device under the action of air flow, the spike-tooth device and the threaded rod device rotate in opposite directions to fully break the materials, capsule particles fall into a screen, and the straws are discharged out of the threshing cylinder; the stripping process is carried out on the threaded rod, the threaded rod is wound or the materials are wound and agglomerated, the concave plate sieve can be damaged, the safety valve is opened at the moment, the threaded rod is driven to move towards the stripping drum shaft by the contraction of the air push rod, the diameter of the threaded rod device is reduced, and the distance between the threaded rod device and the concave plate sieve is increased, so that the materials are smoothly discharged, and the equipment is prevented from being damaged.

The threshing machine is ingenious in design, compact in layout due to the adoption of a nested structure, and capable of effectively reducing the size of the whole threshing machine on the premise of ensuring the threshing quality; the threshing device is matched with the airflow auxiliary device, so that the threshing effect is effectively improved, the threshing rate is improved, the diameter-adjustable threaded rod device and the gap-adjustable concave sieve improve the safety protection performance of equipment, the threshing of the newly fed materials is not influenced by the threshed materials, the threshing blockage caused by threshing is prevented, and the adaptability is wide. The threshing machine is simple to use, convenient and quick to maintain, high in operation efficiency and suitable for threshing operation of various crops, and specifically comprises wheat, flax, soybeans, millet, quinoa and the like.

Drawings

The invention is further illustrated in the following description with reference to the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic illustration of the nesting of the rasp bar arrangement and the spike device of the present invention;

FIG. 3 is a schematic view of a gap adjustable recess screen of the present invention;

FIG. 4 is a schematic view of an adjustment drive assembly of the rasp bar apparatus of the present invention;

FIG. 5 is an exploded schematic view of the planetary gear set of the present invention;

FIG. 6 is a schematic view of an air net of the present invention;

FIG. 7 is a schematic view of a second spike carousel in accordance with the present invention;

FIG. 8 is a schematic view of a first tooth carousel in accordance with the present invention;

FIG. 9 is a schematic view of the spike teeth of the present invention;

FIG. 10 is a schematic view of the rasp bar carousel of the present invention;

FIG. 11 is a schematic view of a rasp bar of the present invention;

FIG. 12 is a schematic view of an air panel housing of the present invention;

FIG. 13 is a schematic view of an adjustment linkage of the present invention;

FIG. 14 is a schematic view of an adjusting link of the present invention;

FIG. 15 is a schematic view of an adjusting blade of the present invention;

FIG. 16 is a schematic view of an adjustment swing link of the present invention;

description of reference numerals: 1. a drum frame; 2. a concave plate sieve; 201. adjusting the pull rod; 202. an adjusting link; 203. a connecting pin; 204. adjusting a swing rod; 205. an adjustment shaft; 206. a return spring; 207. a concave screen frame; 208. adjusting the blades; 3. a rasp bar device; 301. a flange plate; 302. a feed head; 303. a rasp bar; 304. a rasp bar turntable; 305. an air disk shell; 306. mounting a bearing; 307. a rasp bar grass guide plate; 308. an air push rod; 4. a spike-tooth device; 401. a first spike-tooth turntable; 402. a spike tooth turntable II; 403. nailing teeth; 5. an air net; 501. an exhaust hole; 502. a feeding port; 6. a first pipeline; 7. a safety valve; 8. a hydraulic air pump; 801. a hydraulic oil inlet and outlet; 9. a second pipeline; 10. a third pipeline; 11. an adjusting handle; 12. adjusting a valve; 13. an air shell; 14. a threshing cylinder shaft; 1401. a ring gear; 1402. a sun gear; 1403. and a planet wheel.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-16, the utility model provides an supplementary stifled threshing cylinder that prevents of adjustable air current of nested formula, includes cylinder frame 1, be connected with thresher and air current auxiliary device on the cylinder frame 1, thresher passes through the belt seat bearing and connects the upper portion of cylinder frame 1, the supplementary thresher setting of air current is in threshing cylinder's outside, just the air current auxiliary device passes through bolt-up and connects on the cylinder frame 1.

The threshing device comprises a concave sieve 2 with adjustable clearance, a rasp bar device 3 with adjustable diameter, a spike tooth device 4 and a threshing roller shaft 14, the threshing roller shaft 14 is rotatably connected to the roller frame 1, the spike tooth device 4 is connected to the threshing roller shaft 14, the rasp bar device 3 with adjustable diameter is arranged outside the spike tooth device 4, the spike tooth device 4 is nested inside the rasp bar device 3, the rasp bar device 3 and the airflow auxiliary device share a hydraulic air pump 8, and the rasp bar device 3 and the airflow auxiliary device are both communicated with the hydraulic air pump 8 through pipelines; the concave plate sieve 2 is connected to the inner side of the roller frame 1 through a bolt, the concave plate sieve 2 is positioned below the rasp bar device 3, and a spline for transmission connection with a combine harvester is arranged at the driving end of the threshing roller shaft 14.

As shown in fig. 2 and 7-9, the spike teeth device 4 includes a first spike teeth turntable 401, a second spike teeth turntable 402 and spike teeth 403, two ends of the spike teeth 403 are respectively connected to the first spike teeth turntable 401 and the second spike teeth turntable 402 through bolts, the first spike teeth turntable 401 and the second spike teeth turntable 402 are connected to two ends of the threshing cylinder shaft 14 through positioning keys, and key slots are formed in central circular holes of the first spike teeth turntable 401 and the second spike teeth turntable 402, so that when the threshing cylinder shaft 14 rotates to drive the first spike teeth turntable 401, the second spike teeth turntable 402 and the plurality of spike teeth 403 to synchronously rotate in the same direction.

As shown in fig. 2, 3 and 10-12, the rasp bar device 3 includes a feeding head 302, a rasp bar 303 and a rasp bar turntable 304, the feeding head 302 and a flange 301 are coaxially matched, the flange 301 is connected to the drum frame 1 through screws, the flange 301 is connected to one end of the threshing drum shaft 14, which is provided with a spline, through a self-contained bearing, the rasp bar turntable 304 is connected to the outer side of the spike-tooth turntable two 402 through a mounting bearing 306 and rotates around the spike-tooth turntable two 402, and two ends of the rasp bar 303 are adjustably connected to the feeding head 302 and the rasp bar turntable 304; the inner wall of the feeding head 302 is in transmission connection with the threshing roller shaft 14 through a planetary gear set and drives the rasp bar 303 to rotate, and an adjusting driving component is arranged between the rasp bar 303 and the rasp bar turntable 304. Specifically, the first spike rotating disc 401 is nested in the feeding head 302, and one surface of the feeding head 302, on which the threaded rod is fixed, is flush with the first spike rotating disc 401.

As shown in fig. 5, the planetary gear set includes a ring gear 1401, a sun gear 1402 and planet gears 1403, the sun gear 1402 is connected to the threshing drum shaft 14 through a positioning key, the two planet gears 1403 are connected to the inner end surface of the flange plate 301, the ring gear 1401 is connected inside the feeding head 302 through bolts, and the sun gear 1402 is connected with the ring gear 1401 through the planet gears 1403 in a transmission manner. During operation, the threshing cylinder shaft 14 rotates to drive the sun gear 1402 to rotate synchronously, because the sun gear 1402 is meshed with the gear on the outer peripheral surface of the planet gear 1403, the planet gear 1403 is driven to rotate reversely, the inner peripheral surface of the gear ring 1401 is meshed with the outer peripheral surface of the planet gear 1403, and the gear ring 1401 and the planet gear 1403 are driven to rotate in the same direction, so that the feeding head 302 and the bar 303 connected to the feeding head 302 are driven to rotate, and the rotation direction of the bar 303 is opposite to the rotation direction of the nail teeth 403.

As shown in fig. 4, the adjusting driving assembly includes an air disc housing 305, an air push rod 308 and a safety valve 7, the air disc housing 305 is connected to the roller frame 1 through bolts, the air disc housing 305 and the rasp bar turntable 304 are coaxially connected in a matching manner and are located inside the rasp bar turntable 304, air grooves are formed in both the rasp bar turntable 304 and the air disc housing 305, and sealing rings are arranged on the matching surfaces of the rasp bar turntable 304 and the air disc housing 305; the rasp bar 303 comprises a rasp bar body and a connecting seat with two vertically connected ends, an adjusting sliding groove is formed in the connecting seat, the adjusting of the connecting position is achieved through the design of the adjusting sliding groove, the bottom end of the air push rod 308 is fixed on the rasp bar turntable 304 through a bolt, one end of a piston push rod of the air push rod 308 is connected with the rasp bar body, an air port of the air push rod 308 is communicated with an air groove of the rasp bar turntable 304, the air groove of the rasp bar turntable 304 is communicated with a hydraulic air pump 8 through a pipeline I6, and the safety valve 7 is arranged on the pipeline I6. When the adjustment is needed, the safety valve 7 is opened, the hydraulic air pump 8 leads air into the air push rod 308 through the first pipeline 6 and the air groove, and the piston push rod of the air push rod 308 is driven to extend or contract to reset.

Specifically, a plurality of nail teeth 403 are uniformly distributed in a circumferential manner, a plurality of threaded rods 303 are uniformly distributed in a circumferential manner, and a plurality of threaded rods 303 surround the outer sides of the plurality of nail teeth 403; the air push rod 308 extends or contracts to drive the rasp bar 303 to move outwards or inwards to change the size of the outer contour, and the size is changed synchronously with the distance between the spike teeth 403 and the concave plate screen 2. Specifically, when the air push rod 308 extends out, the threaded rod 303 is driven to move outwards, and the diameter is increased; on the contrary, when the air push rod 308 contracts, the threaded rod 303 is driven to move inwards, and the diameter is reduced. The diameter of the rasp bar device 3 is adjusted according to the characteristics, the water content and the feeding quantity of the fed threshing materials so as to adapt to the threshing operation of various materials.

The rasp bar device 3 with the adjustable diameter also has a safety protection function, when the threshing material is wound between the rasp bar 303 and the material itself to be wound into a bulk shape or the feeding amount is too large, the blockage between the rasp bar 303 and the concave plate sieve 2 can damage the concave plate sieve 2 with the adjustable gap; when the rasp bar 303 and the concave sieve 2 are blocked, the rasp bar 303 is stressed too much, the safety valve 7 is opened, the air push rod 308 contracts to drive the diameter of the threshing cylinder formed by the rasp bar 3 to be reduced, and the distance between the threshing cylinder and the concave sieve 2 is increased, so that the threshing materials are smoothly discharged, and the purpose of protecting the concave sieve is achieved.

Specifically, the inner side surface of the rasp bar 303 is provided with a straw guide plate 307 for discharging straws when the spike-tooth device is separated, so that material blockage is prevented.

As shown in fig. 3 and 13-16, the concave screen 2 includes a concave screen frame 207, an adjusting shaft 205, an adjusting blade 208, an adjusting swing rod 204, an adjusting link 202, a connecting pin 203, a return spring 206 and an adjusting pull rod 201, the concave screen frame 207 is installed on the inner side of the roller frame 1 through a bolt, one end of the adjusting shaft 205 and the adjusting blade 208 are matched through a diamond hole and are uniformly arranged on the concave screen frame 207, the other end of the adjusting shaft 205 is matched with the adjusting swing rod 204, the other end of the adjusting swing rod 204 is spherical and is in spherical hinge connection with the adjusting link 202, the adjusting link 202 forms a soft connection through the connecting pin 203 to form an adjusting chain, and two ends of the adjusting chain are respectively connected with the roller frame 1 through the return spring 206 and the adjusting pull rod 201.

As shown in fig. 1 and 6, the airflow assisting device comprises an air net 5 and an air shell 13, the air net 5 is arranged above the rasp bar device 3, the air shell 13 is arranged above the air net 5, and the air net 5 and the air shell 13 are tightly matched and connected to the roller frame 1 through bolts; the air net 5 is provided with two groups of air vents 501, air inlets of the two groups of air vents are communicated with the hydraulic air pump 8 through a third pipeline 10, a second pipeline 9 and a regulating valve 12, the regulating valve 12 is connected between the second pipeline 9 and the third pipeline 10, and the regulating valve 12 is connected with a regulating handle 11. Specifically, the second pipeline 9 is provided with one, the third pipeline 10 is provided with two, the one end of the second pipeline 9 is connected on the hydraulic air pump 8, the other end of the second pipeline 9 is communicated with the third pipeline 10 through connecting at the regulating valve 12, the regulating valve adopts a three-position four-way reversing valve, the air flow comes out from the hydraulic air pump 8 and is communicated with the regulating valve 12 through the second pipeline 9, the air flow coming out from the regulating valve 12 is communicated with an air net through the third pipeline 10, the closing between the two pipelines of the pipeline 10 is regulated through the regulating valve 12, and therefore the size of the air flow on the air flow auxiliary device is controlled. Specifically, as shown in fig. 6, the two groups of exhaust holes 501 are provided with six rows in total, the 1 st, 3 rd and 5 th rows are communicated with each other to form one exhaust passage, and the 2 nd, 4 th and 6 th rows are communicated with each other to form another exhaust passage. After the materials are fed into the threshing cylinder, the materials are tightly attached to the concave plate sieve 2 under the action of air flow, and the rubbing between the threaded rod 303 and the concave plate sieve 2 is increased, so that the threshing is facilitated; the threshed straw and material particles are brought into the upper part of the threshing cylinder and smoothly enter the spike-tooth device 4 for separation from the gap between the rasp bar and the rasp bar under the action of air flow.

The number of the exhaust holes in the airflow auxiliary device is adjusted through a three-position four-way reversing valve according to the straw characteristics, the water content, the feeding amount and the like of the threshing materials.

The threshing process of the invention is as follows:

firstly, the nested airflow-assisted threshing cylinder has the threshing step: the method comprises the following steps that the gap of a concave plate sieve, the diameter of a rasp bar device and the number of exhaust holes are adjusted according to the characteristics of materials before harvesting, a specific adjusting valve is provided with an air inlet and two exhaust holes, if the materials are dry, the straws are not easy to knot and wind, the adjusting valve only opens one of two pipelines III 10, the exhaust holes in rows 1, 3 and 5 or rows 2, 4 and 6 of the exhaust holes work, if the straws are easy to wind and the threshing materials are wet, two air outlets of the adjusting valve are opened, namely the exhaust holes in rows 1, 3 and 5 and the exhaust holes in rows 2, 4 and 6 of the exhaust holes participate in the work; the material is harvested by the harvester and fed into the threshing cylinder through the feeding port 502, enters the gap between the threaded rod 303 and the concave sieve 2, the air flow is discharged from the exhaust hole of the air net 5 in the air flow auxiliary device, and the threshing material is tightly attached to the concave sieve 2 under the action of the air flow, so that the threshing material can be better rubbed under the combined action of the concave sieve and the threaded rod, and the threshing is completed.

Secondly, the nested airflow auxiliary threshing cylinder is separated: crop straws and capsule seeds which are threshed are blown into the spike tooth device 4 from the gap between the rasp bar and the rasp bar under the action of air flow due to the action of the air flow auxiliary device when the crop straws and the capsule seeds rotate along with the rasp bar 303 to the top of the rasp bar, the direction of the spike tooth device 4 is opposite to that of the rasp bar device 3, materials entering the spike tooth device 4 are collided reversely by the spike teeth 403, the materials are fully scattered, the capsule seeds fall onto the concave plate sieve 2 from the straws, and the straws are discharged out of the threshing roller under the action of the grass guide plate 307 at the back of the rasp bar.

The threshing machine is ingenious in design, compact in layout due to the adoption of a nested structure, and the size of the whole threshing machine is effectively reduced on the premise of ensuring the threshing quality; the threshing device is matched with the airflow auxiliary device, so that the threshing effect is effectively improved, the threshing rate is improved, the diameter-adjustable threaded rod device and the gap-adjustable concave sieve improve the safety protection performance of equipment, the threshing of the newly fed materials is not influenced by the threshed materials, the threshing blockage caused by threshing is prevented, and the adaptability is wide.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (10)

1. The utility model provides a supplementary stifled threshing cylinder of preventing of adjustable air current of nested formula which characterized in that: including cylinder frame (1), be connected with thresher and air current auxiliary device on cylinder frame (1), thresher passes through the belt seat bearing and connects the upper portion of cylinder frame (1), the supplementary thresher setting of air current is in threshing cylinder's outside, just air current auxiliary device passes through the bolt-up and connects on cylinder frame (1).

2. The nested adjustable airflow-assisted anti-blocking threshing cylinder of claim 1, wherein: the threshing device comprises a concave sieve (2) with adjustable clearance, a threaded rod device (3) with adjustable diameter, a spike-tooth device (4) and a threshing roller shaft (14), the threshing roller shaft (14) is rotatably connected to the roller frame (1), the spike-tooth device (4) is connected to the threshing roller shaft (14), the threaded rod device (3) with adjustable diameter is arranged outside the spike-tooth device (4), the spike-tooth device (4) is nested inside the threaded rod device (3), and the threaded rod device (3) and the airflow auxiliary device share one hydraulic air pump (8); the concave plate sieve (2) is connected to the inner side of the roller frame (1) through a bolt, the concave plate sieve (2) is located below the rasp bar device (3), and a spline for transmission connection with the combine harvester is arranged at the driving end of the threshing roller shaft (14).

3. The nested adjustable airflow-assisted anti-clogging threshing cylinder according to claim 2, wherein: the spike tooth device (4) comprises a spike tooth turntable I (401), a spike tooth turntable II (402) and spike teeth (403), two ends of the spike teeth (403) are respectively connected to the spike tooth turntable I (401) and the spike tooth turntable II (402) through bolts, and the spike tooth turntable I (401) and the spike tooth turntable II (402) are connected to two ends of the threshing roller shaft (14) through positioning keys;

the rasp bar device (3) comprises a feeding head (302), a rasp bar (303) and a rasp bar rotary table (304), the feeding head (302) is coaxially matched with a flange plate (301), the flange plate (301) is connected to the roller frame (1) through screws, the flange plate (301) is connected with one end, provided with a spline, of the threshing roller shaft (14) through a self-contained bearing, the rasp bar rotary table (304) is connected to the outer side of the spike-tooth rotary table II (402) through a mounting bearing (306), and two ends of the rasp bar (303) are adjustably connected to the feeding head (302) and the rasp bar rotary table (304); the inner wall of the feeding head (302) is in transmission connection with the threshing roller shaft (14) through a planetary gear set and drives the rasp bar (303) to rotate, and an adjusting driving assembly is arranged between the rasp bar (303) and the rasp bar rotating disc (304).

4. The nested airflow-assisted anti-clogging threshing cylinder according to claim 3, wherein: the planetary gear set comprises a gear ring (1401), a sun wheel (1402) and planet wheels (1403), the sun wheel (1402) is connected to the threshing drum shaft (14) through a positioning key, the two planet wheels (1403) are connected to the end face of the inner side of the flange plate (301), the gear ring (1401) is connected to the inside of the feeding head (302) through bolts, and the sun wheel (1402) is in transmission connection with the gear ring (1401) through the planet wheels (1403).

5. The nested adjustable airflow-assisted anti-blocking threshing cylinder according to claim 3, wherein: the first spike-tooth turntable (401) is nested in the feeding head (302), and one surface of the feeding head (302) for fixing the threaded rod is flush with the first spike-tooth turntable (401).

6. The nested adjustable airflow-assisted anti-clogging threshing cylinder according to claim 3, wherein: the adjusting driving assembly comprises an air disc shell (305), an air push rod (308) and a safety valve (7), the air disc shell (305) is connected to the roller frame (1) through a bolt, the air disc shell (305) and the threaded rod turntable (304) are coaxially matched and connected and are located on the inner side of the threaded rod turntable (304), air grooves are formed in the threaded rod turntable (304) and the air disc shell (305), and a sealing ring is arranged on the matching surface of the threaded rod turntable (304) and the air disc shell (305); the rasp bar (303) comprises a rasp bar body and a connecting seat with two vertically connected ends, an adjusting sliding groove is formed in the connecting seat, the bottom end of an air push rod (308) is fixed to a rasp bar rotating disc (304) through a bolt, one end of a piston push rod of the air push rod (308) is connected with the rasp bar body, an air port of the air push rod (308) is communicated with an air groove of the rasp bar rotating disc (304), the air groove of the rasp bar rotating disc (304) is communicated with a hydraulic air pump (8) through a first pipeline (6), and a safety valve (7) is arranged on the first pipeline (6).

7. The nested adjustable airflow-assisted anti-clogging threshing cylinder according to claim 5, wherein: the nail teeth (403) are uniformly distributed in a circumferential manner, the rasp bars (303) are uniformly distributed in a circumferential manner, and the rasp bars (303) surround the outer sides of the nail teeth (403); the air push rod (308) stretches out or contracts to drive the corrugated rod (303) to move outwards or inwards to change the size of the outer contour, and the distance between the corrugated rod (303) and the spike teeth (403) and the distance between the corrugated rod and the concave plate screen (2) are changed synchronously.

8. The nested adjustable airflow-assisted anti-clogging threshing cylinder according to claim 7, wherein: the inner side surface of the rasp bar (303) is provided with a grass guiding plate (307).

9. The nested adjustable airflow-assisted anti-clogging threshing cylinder according to claim 2, wherein: concave sieve (2) include concave sieve frame (207), regulating spindle (205), adjusting blade (208), adjust pendulum rod (204), adjusting link (202), connecting pin (203), return spring (206) and adjusting pull rod (201), concave sieve frame (207) pass through the bolt and install the inboard in cylinder frame (1), the one end and adjusting blade (208) of regulating spindle (205) pass through diamond hole cooperation to evenly arrange on concave sieve frame (207), the other end of regulating spindle (205) with adjusting pendulum rod (204) cooperation, the other end of adjusting pendulum rod (204) is spherical and is connected with adjusting link (202) ball joint, forms soft connection through connecting pin (203) between adjusting link (202) and forms the regulation chain, and one both ends of adjusting the chain are connected with cylinder frame (1) through return spring (206), adjusting pull rod (201) respectively.

10. The nested adjustable airflow-assisted anti-clogging threshing cylinder according to claim 2, wherein: the airflow auxiliary device comprises an air net (5) and an air shell (13), the air net (5) is arranged above the rasp bar device (3), the air shell (13) is positioned above the air net (5), and the air net (5) and the air shell (13) are tightly matched and connected to the roller frame (1) through bolts; be equipped with two sets of exhaust holes on air network (5), two sets of exhaust holes all communicate with hydraulic air pump (8) through pipeline three (10), pipeline two (9), governing valve (12) are connected between pipeline two (9), pipeline three (10), be connected with adjustment handle (11) on governing valve (12).

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