CN217336517U - Coarse cereals is with flexible ratch line pole combination formula thresher - Google Patents

Abstract

The utility model particularly relates to a grain crop is with flexible ratch line pole combination formula thresher, has solved current grain crop thresher seed grain damage serious, thresh the high, easy jam of loss rate, contain miscellaneous problem that the rate is high, the adaptability is weak. A combined threshing device with telescopic toothed bars and threaded bars for coarse cereals crops is characterized in that a grid concave plate, a motor, a vibration separation sieve and a threaded bar roller are arranged in a frame; the right end of the frame is provided with a main shaft; a supporting shaft is arranged on the left end face of the rasp bar roller, a fixed rod is arranged between the main shaft and the supporting shaft, a connecting sleeve is sleeved on the fixed rod, and a threshing toothed bar is arranged on the connecting sleeve; a centrifugal fan is arranged on the right side of the rasp bar roller; the transmission mechanism comprises a driving wheel, a roller transmission wheel, a fan transmission wheel, a reversing speed reducer input transmission wheel and a crank rocker mechanism. The utility model discloses compact structure reduces the damage to seed grain, has avoided the grid notch board to block up, has reduced the miscellaneous rate of containing after threshing, and applicable in the coarse cereals crop of different grade type has effectively improved adaptability.

Description

A kind of telescopic tooth bar pattern bar combined threshing device for miscellaneous grain crops

technical field

The utility model relates to the technical field of agricultural machinery, in particular to a crop threshing device, in particular to a telescopic tooth bar pattern-rod combined threshing device for miscellaneous grain crops.

Background technique

With the advancement of urban-rural integration and the rapid expansion of industrial industries, the total area of arable land is constantly shrinking. Therefore, while protecting arable land, it is necessary to use the limited area of arable land to increase grain output as much as possible. Miscellaneous grains account for a large proportion of the total grain supply, and the stability and income of miscellaneous grains play an extremely important role in food security. With the development of economic level, miscellaneous grains are more and more popular among people, and the demand for miscellaneous grains is also increasing, so it is of great significance to increase the production and income of miscellaneous grains.

However, practice has shown that the existing grain crop threshers have the following problems in use: first, the grain damage is serious; second, the threshing loss rate is high. Due to the small grain size of the millet, the sealing conditions of the traditional threshing device are not suitable for the requirements of millet threshing , resulting in greater threshing loss; third, it is easy to block, when the crop moisture content is high, the threshing mechanism is prone to congestion; fourth, the impurity rate is high, because the cleaning mechanism is not mature enough, resulting in a lot of impurities in the harvested grains; It is because the thresher has weak adaptability, various types of miscellaneous grain crops, and different physical properties of various crops, so it is difficult to achieve the harvest standard when threshing different crops. Based on this, it is necessary to invent a telescopic rod toothed rod combined threshing device for miscellaneous grain crops, to solve the above technical problems, to meet the urgent needs of production and to improve the level of agricultural mechanization of such crops.

Utility model content

In order to solve the problems of serious grain damage, high threshing loss rate, easy blockage, high impurity content and weak adaptability of the existing grain crop threshers, the utility model provides a telescopic tooth-bar pattern-rod combined threshing device for grain crops. .

The utility model is realized by adopting the following technical solutions:

The utility model relates to a combined type threshing device of a telescopic toothed bar patterned rod for miscellaneous grain crops. The connected arc-shaped top cover, the left front part of the frame is fixed with a feeding hopper, and the right rear part is provided with a discharge port; the grid concave plate is provided with a grooved roller that fits with its bottom end; the right end of the frame is provided with a The main shaft is connected with the center of the right end face of the corrugated rod drum; the center of the left end face of the corrugated rod drum is provided with a support shaft connected with the left end of the frame, and a fixed rod located directly above the main shaft and the support shaft is arranged between the two, and the fixed rod is sleeved with a The connecting sleeve is provided with a number of radially placed and spirally distributed threshing gear rods, and the threshing gear rods pass through the side wall of the corrugated rod drum;

The frame is also provided with a motor and a vibrating separation screen. The vibrating separation screen is composed of a conveying screen, a fine screen and a coarse screen connected in sequence from left to right, and the conveying screen is located below the grid concave plate; the coarse screen is The right side is connected with the miscellaneous waste conveying bucket with the discharge port facing the rear, and the lower side is connected with the grain conveying bucket with the discharge port facing forward; the right side of the rib drum is provided with a centrifugal fan with the air inlet facing the fine screen; The bottom of the vibrating separation screen is fixedly connected with a driving rod; between the vibrating separation screen and the frame, there are four supporting connecting rods hinged with the two;

The transmission mechanism comprises a drive wheel fixedly assembled on the output shaft of the motor, a drum drive wheel fixedly assembled on the right end of the main shaft, a fan drive wheel and a reversing reducer input drive wheel fixedly assembled on the left end of the rotating shaft of the centrifugal fan, The drum drive wheel, the fan drive wheel, and the input drive wheel of the reversing reducer are respectively connected to the driving wheel for transmission; a crank rocker mechanism is arranged between the output end of the reversing reducer and the bottom end of the driving rod.

Further, the centrifugal fan includes a volute, a blade is arranged in the volute, an air inlet is arranged at the bottom end of the volute, and an air outlet is arranged on the rear side of the volute.

Further, the connecting sleeve is composed of several connecting sleeve bodies arranged left and right, each connecting sleeve body is provided with a toothed rod sleeve integral with it and radially opening, and one end of the threshing toothed rod passes through the A toothed bar connecting pin shaft passing through the threshing toothed bar is arranged in the toothed bar sleeve and the sidewall of the toothed bar sleeve.

Further, three rows of threshing tooth bars are arranged along the axial direction of the fixing rod, and the three rows of threshing tooth bars are evenly arranged along the circumferential direction of the fixing bar; The hinge seat, the gear rod fixing hinge seat is provided with a linear bearing sleeved on the threshing gear rod and two deep groove ball bearings arranged on the outside of the linear bearing and distributed up and down.

Further, the left end of the main shaft is provided with a right bearing, the right bearing is covered with a right bearing sleeve, the right end of the fixing rod is covered with a right shaft sleeve integrated with the right bearing sleeve, and the side wall of the right shaft sleeve is provided with a right bearing sleeve. The right connecting pin shaft of the fixed rod; a left bearing is arranged between the support shaft and the left side wall of the threaded rod drum, the support shaft on the right side of the left bearing is connected with a support shaft sleeve through a flat key, and the left end of the fixed rod is sleeved with a support The left shaft sleeve of the integral structure of the shaft sleeve is provided with a left connecting pin shaft passing through the fixing rod on the side wall of the left shaft sleeve.

Further, the grid concave plate includes a plurality of rib plates placed axially and arranged at equal intervals in the circumferential direction, the left and right ends of the rib plates are fixed with arc-shaped spokes, and all the rib plates are pierced with a plurality of grid bars in the circumferential direction, The grid bars are equally spaced along the axial direction.

Further, two fixing plates are arranged horizontally at the front end and the rear end of the grid concave plate, the lower surface of each fixing plate is fixed with an adjusting stud, and the outer side of the adjusting stud is provided with an adjusting stud located above the frame. The lower part of the adjusting stud protrudes out of the frame, and the lower end of the spring is screwed with an adjusting nut and a locking nut.

Further, the corrugated bar roller includes a hexagonal star-shaped left panel and a hexagonal star-shaped right panel, and the corners of the hexagonal star-shaped left panel and the hexagonal star-shaped right panel are fixed with horizontally placed D-shaped bars, D-shaped The corrugated rod is provided with tooth slots spirally distributed along its axial direction, and the D-shaped corrugated rod is provided with an iron plate that forms a closed cavity with the hexagonal star-shaped left plate and the hexagonal star-shaped right plate and has a hexagonal star-shaped cross section. .

Further, the drive wheel and the drum drive wheel, the drive wheel and the fan drive wheel are all connected through a continuously variable transmission; the drive wheel and the input drive wheel of the reversing reducer are connected through a belt drive.

The utility model designs a brand new threshing device. Compared with the existing threshing device, the utility model has the following beneficial effects: (1) Through the combined structure of the telescopic threshing gear rod and the corrugated rod, the threshing device is compact in structure and reduces the damage to the grain. (2) Through the elastically supported grid concave plate to avoid clogging, at the same time, the material is kneaded and impacted by the grooved bar drum and the threshing gear rod in cooperation with the grid concave plate during the rotation process to complete the separation of grain and straw, and threshing The gear rod plays the role of tumbling and conveying the material through eccentric rotation, avoiding the phenomenon of straw entanglement and clogging of the grid concave plate. (3) By improving the sealing performance, the threshing loss rate is reduced. (4) Through the structural design of the centrifugal fan and the vibrating separation screen, the cleaning function of the material after threshing is realized, the separation effect is good, and the impurity content after threshing is reduced. (5) The distance between the grid concave plate and the ribbed drum is adjusted by the elastically supported grid concave plate, so that the threshing device can be applied to different types of miscellaneous grain crops, and the adaptability is effectively improved.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the side view schematic diagram of Fig. 1;

Fig. 3 is a schematic diagram of the internal structure of the ribbed roller of the present utility model;

Fig. 4 is the side view schematic diagram of Fig. 3;

Figure 5 is a schematic diagram of the external structure of the utility model in the rod drum;

Fig. 6 is the structural representation of the grid concave plate in the utility model;

Fig. 7 is the top schematic view of Fig. 6;

Fig. 8 is the structural representation of vibrating separation screen in the present utility model;

Fig. 9 is the structural representation of the centrifugal fan in the present utility model;

Figure 10 is a schematic side view of Figure 9;

Fig. 11 is the structural representation of the volute in the present utility model;

Fig. 12 is the transmission system diagram of the present utility model;

13 is a schematic diagram of the arrangement of the crank-rocker mechanism in the present invention.

In the figure, 1-frame, 2-grid concave plate, 3-arc top cover, 4-feed hopper, 5-discharge port, 6-ribbed roller, 7-spindle, 8-support shaft, 9- Fixed rod, 10-connecting sleeve, 11-threshing gear rod, 12-motor, 13-vibrating separation screen, 14-conveying screen plate, 15-fine screen, 16-coarse screen, 17-miscellaneous conveying bucket, 18-seed conveying bucket, 19-air inlet, 20-drive rod, 21-support link, 22-drive wheel, 23-drum drive wheel, 24-fan drive wheel, 25-reversing reducer input drive wheel, 26- crank rocker mechanism, 27- volute, 28- vane, 29- air outlet, 30- gear rod sleeve, 31- gear rod connecting pin, 32- gear rod fixed hinge seat, 33- linear bearing, 34 -Deep groove ball bearing, 35-right bearing, 36-right bearing sleeve, 37-right sleeve, 38-right connecting pin, 39-left bearing, 40-support sleeve, 41-left sleeve, 42-left Connecting pin, 43-rib, 44-arc spoke, 45-grid, 46-fixing plate, 47-adjusting stud, 48-adjusting spring, 49-adjusting nut, 50-locking nut, 51-hexagonal star Left panel, 52-hexagonal star-shaped right panel, 53-D pattern rod, 54-iron plate, 55-stepless transmission, 56-belt.

Detailed ways

A telescopic rack-and-bar threshing device for miscellaneous grain crops, as shown in the accompanying drawings 1 to 4, includes a frame 1 and a transmission mechanism, and a grid concave plate whose top is flush with its upper end is arranged in the frame 1 2. The upper cover of the grid concave plate 2 is covered with an arc-shaped top cover 3 connected with the upper end of the frame 1. The left front part of the frame 1 is fixedly penetrated with a feeding hopper 4, and the right rear part is provided with a discharge port 5; The plate 2 is provided with a corrugated rod drum 6 that fits with its bottom end; the right end of the frame 1 is provided with a main shaft 7 connected to the center of the right end face of the corrugated rod drum 6; the center of the left end face of the corrugated rod drum 6 is provided with the left end of the rack 1. The connected support shaft 8, the main shaft 7 and the support shaft 8 are provided with a fixed rod 9 located directly above the two, the fixed rod 9 is covered with a connecting sleeve 10, and the connecting sleeve 10 is provided with a number of radially placed and The threshing toothed bar 11 is spirally distributed, and the threshing toothed bar 11 penetrates the side wall of the corrugated bar drum 6;

As shown in Figures 1 and 8, the frame 1 is also provided with a motor 12 and a vibrating separation screen 13. The vibrating separation screen 13 is composed of a conveying screen plate 14, a fine screen 15 and a coarse screen 16 connected in sequence from left to right. and the conveying sieve plate 14 is located below the grid concave plate 2; the right side of the coarse screen 16 is connected with the miscellaneous surplus conveying bucket 17 with the discharge port facing backward, and the lower side is connected with the grain seed with the discharge port facing forward The conveying bucket 18; the right side of the ribbed drum 6 is provided with a centrifugal fan whose air inlet 19 faces the fine screen 15; the bottom of the vibrating separation screen 13 is fixedly connected with a driving rod 20; There are four supporting links 21 hinged with the two;

As shown in Fig. 1 and Fig. 12, the transmission mechanism includes a drive wheel 22 fixedly assembled on the output shaft of the motor 12, a drum drive wheel 23 fixedly assembled on the right end of the main shaft 7, and a drive wheel 23 fixedly assembled on the rotating shaft of the centrifugal fan. The fan drive wheel 24 at the left end and the input drive wheel 25 of the reversing reducer, the drum drive wheel 23, the fan drive wheel 24, and the input drive wheel 25 of the reversing reducer are respectively connected to the driving wheel 22 for transmission; the output end of the reversing reducer A crank-rocker mechanism 26 is provided between it and the bottom end of the drive rod 20 .

During the threshing operation, the main shaft 7 is driven to rotate, which drives the connecting sleeve 10 and the corrugated rod drum 6 to rotate. The screw action uses the threshing tooth bar 11 to grab and hit the material, and the threshing tooth bar 11 is driven by the threshing tooth bar 11 to rotate eccentrically along the center of the threshing bar drum 6. , under the cooperation of the bar roller 6 and the grid concave plate 2, the grain ears and the stems are combed, squeezed, impacted and rubbed to realize the separation of the grains and the grain ears, the grain ears and the stems, among which the stems are separated. Under the action of the corrugated bar drum 6, the spiral moves to the right, and is discharged out of the machine through the discharge port 5; when the threshing tooth bar 11 extends on the top of the corrugated bar drum 6, the material is further impacted and beaten under the action of impact to achieve Separation of hard-to-remove grains and stalks, while breaking the stalks, further, the helical distribution of the ribbed roller 6 can well tumbling and pushing the material to the right, bringing the long stalks away from the ribbed roller 6 and The minimum gap of the grid concave plate 2 prevents the stalks from being wound on the corrugated rod drum 6 to cause blockage, and avoids the clogging of the grid concave plate 2; The grid concave plate 2 falls into the vibrating separation screen 13. During the conveying process of the vibrating separation screen 13, when the grains, miscellaneous residues, chaff and short stalks enter the fine screen 15, the centrifugal action of the centrifugal fan , the light debris, chaff and short stems on the fine screen 15 are sucked into and blown out of the machine, and at the same time, the fine debris such as dust falls down through the fine screen 15 and is discharged out of the machine; The clean grains pass through the coarse screen 16 and then enter the grain conveying bucket 18 for collection, and the rest of the mixture that is not sucked up by the centrifugal fan falls into the miscellaneous surplus conveying bucket 17 . The invention overcomes the problems of serious grain damage, high threshing loss rate, easy blockage, high impurity content and weak adaptability of the existing grain crop thresher.

When working, start the motor 12, on the one hand drive the drum drive wheel 23 and the fan drive wheel 24 to rotate, and then drive the main shaft 7 and the rotating shaft of the centrifugal fan to rotate, thereby driving the threaded rod drum 6 and the centrifugal fan to work; on the other hand The drive wheel 22 drives the input transmission wheel 25 of the reversing reducer to rotate, and then drives the crank-rocker mechanism 26 to move, so as to realize the vibration of the vibrating separation screen 13 .

As shown in FIG. 1 , four supporting links 21 and one driving rod 20 form a parallel four-bar mechanism, which is arranged below the vibrating separation screen 13 ; wherein, the upper end of the driving rod 20 is fixedly connected to the bottom surface of the vibrating separation screen 13 The middle part and the lower end are connected to the reversing reducer through the crank-rocker mechanism 26; the length of the support connecting rod 21 is 180mm, the crank working speed n ₆ =233.3r/min of the crank-rocker mechanism 26, the crank radius r=18.5mm, the connecting rod The length is 325mm.

As shown in FIG. 13, the vibrating separation screen 13 is installed on the frame 1 through the supporting connecting rods 21BC and AD, the crank OE performs a rotary motion around the fixed point O of the frame 1, and the crank is connected with the driving rod 20FG through the connecting rod EF. OE and connecting rod EF form a crank connecting rod mechanism 26, and the vibration separation screen 13 is reciprocatingly vibrated by the driving of the crank connecting rod mechanism 26, so that the vibration separation screen 13 completes the conveying and separation of the protruding material. During the working process of the vibrating separation screen 13, the protruding objects are thrown forward and upward under the action of the vibration of the sieve body, sometimes they are thrown forward and upward by the sieve body, and sometimes they fall on the sieve body; There will be a displacement in the horizontal direction to realize the continuous conveying of the protruding material. In the figure, the included angle α between the support link 21 and the horizontal line is 68°; the included angle β between the link EF and the driving rod 20FG is 81°.

The arc-shaped top cover 3 can completely shield the corrugated rod drum 6, which improves the sealing performance of the threshing device, prevents the loss of small-sized grains, and reduces the threshing loss rate.

The center distance between the fixed rod 9 and the corrugated rod drum 6 is 50 mm, and is eccentric along the vertical and just above the center of the corrugated rod drum 6 . As shown in Figure 4, referring to the "Agricultural Machinery Design Manual", the calculation formula of the length L and the eccentric distance e of the threshing rack 11 is:

In the formula: D—the outer diameter of rotation when the threshing rack 11 is extended (mm), D=470mm; d—the outer diameter of the rotation when the threshing rack 11 is retracted (mm), d=362mm;

In order to make the machine reach the best working state, the length L=235mm and the eccentricity e=50mm of the threshing rack 11 are obtained according to the formula.

As shown in FIG. 8 , the size of the vibrating separation screen 13 is determined according to the overall size of the threshing device. The length of the conveying screen plate 14 is 1033.5mm and the width is 520mm; the fine screen 15 is a 35 mesh woven screen; the coarse screen 16 It is a 5 mesh woven screen with a width of 520mm. The minimum effective length L _min of the coarse screen 16 refers to the "GB/T8679-1988 Grain Preliminary Screening Test Method" as follows:

In the formula: Q—processing capacity per unit time (kg/s), the design feed rate is Q1 ₌ 0.8kg/s, so the maximum processing capacity per unit time Q=0.8kg/s; q—unit sieve length of vibrating screen mesh Handling capacity kg/(mm·s), refer to "GB/T8679-1988 Grain Preliminary Screening Test Method" for wheat q=250kg/(cm·h)=0.00694kg/(mm·s). The minimum effective length of the coarse screen 16 is calculated to be L _min =115 mm.

The longer the length of the coarse screen 16, the better the separation effect, and the compactness of the body size is also considered. The design length of the coarse screen 16 is L=2.5·Lmin= _287.5mm . The grain conveying bucket 18 is arranged directly under the coarse screen 16. The natural repose angle of the oat grain is measured to be 31.42°, and the friction angle with the Q235 steel is 25.1°. Therefore, the back plate of the grain conveying bucket 18 is inclined at 40°. Ensure smooth discharge and reduce residual rate. Similarly, the miscellaneous waste conveying bucket 17 is located behind the coarse screen 16 , and the unthreshed grains and long straws are discharged out of the machine through the miscellaneous waste conveying bucket 17 .

As shown in Fig. 1, Fig. 9-Fig. 11, the centrifugal fan includes a volute 27, a blade 28 is arranged in the volute 27, the air inlet 19 is arranged at the bottom end of the volute 27, and the rear side of the volute 27 An air outlet 29 is provided.

The centrifugal fan is composed of a fan drive wheel 24, a drive shaft, a volute 27, an impeller, an air inlet channel, and an exhaust air channel. The volute 27 adopts a spiral volute; the impeller is a six-blade forward curved blade, and the blade is chamfered. When the centrifugal fan is working, the power is provided by the transmission mechanism through the fan drive wheel 24. The fan drive wheel 24 drives the impeller to rotate through the transmission shaft. The impeller rotates and pushes the air to rotate together. Under the action of centrifugal force, the air is discharged from the centrifugal fan from the exhaust air duct. Because the air is continuously discharged, a negative pressure is formed inside the volute 27, and the outside air continuously enters the inside of the volute 27 through the air inlet passage, so the formation from the air inlet passage of the centrifugal fan to the exhaust air passage is formed. The continuous airflow is realized, and the mechanical energy is converted into the kinetic energy of the air. When the air flows into the volute 27, a certain dynamic pressure and static pressure will be obtained, so that the air has a high flow speed, and the airflow will be carried in the process of flow. The air-flow cleaning work is completed along with the contaminants that are sucked from the inlet air and discharged out of the threshing device.

As shown in FIG. 11 , the volute 27 adopts a spiral volute, the side length of the square in the figure is A/4, and R ₁ , R ₂ , R ₃ , and R ₄ are circles drawn by the four vertices of the square as the center of the circle. Arc Radius:

In the formula: D ₂ - is the diameter of the impeller (mm), D ₂ =300mm; A - the distance between the outer diameter of the impeller and the bottom of the volute (mm), A = 88mm. Obtained R ₁ =161mm; R ₂ =183mm; R ₃ =205mm; R ₄ =227mm;

Fan impeller inner diameter D ₁ :

D ₁ =(0.5～0.6)D ₂ (mm)

In the formula: D ₂ — is the diameter of the impeller in mm, and D ₂ =300mm. The calculation coefficient is taken as 0.6, and D ₁ =180mm is obtained.

As shown in FIG. 1 and FIG. 3 , the connecting sleeve 10 is composed of several connecting sleeve bodies arranged left and right, and each connecting sleeve body is provided with a toothed rod sleeve integral with it and radially opening. In the barrel 30 , one end of the threshing rack 11 is inserted into the rack sleeve 30 , and the side wall of the rack sleeve 30 is provided with a rack connecting pin 31 passing through the threshing rack 11 .

The structural design ensures the free rotation of the threshing rack 11 on the premise that the fixing rod 9 does not rotate, and also realizes the reliable connection between the threshing rack 11 and the connecting sleeve 10 .

As shown in Figures 1 to 4 , three rows of threshing toothed rods 11 are arranged along the axial direction of the fixed rod 9 , and the three rows of threshing toothed rods 11 are evenly distributed along the circumferential direction of the fixed rod 9 ; each threshing toothed rod 11 The side walls of the corresponding corrugated rod drum 6 are provided with a toothed rod fixed hinge seat 32, and the toothed rod fixed hinge seat 32 is provided with a linear bearing 33 sleeved on the threshing toothed rod 11 and two outer sides of the linear bearing 33 and distributed up and down. 34 deep groove ball bearings.

The threshing rack 11 adopts a three-direction helical configuration, which is convenient for conveying materials to the right side, and the rack fixing hinge seat 32 cooperates with the structural design of the linear bearing 33 and the deep groove ball bearing 34, so that the threshing rack 11 passes through the threaded rod drum 6. The stable performance on the threshing gear bar 11 on the corrugated bar drum 6 is not affected at the same time.

As shown in FIG. 3 , the left end of the main shaft 7 is provided with a right bearing 35 , the right bearing 35 is covered with a right bearing sleeve 36 , and the right end of the fixing rod 9 is covered with a right bearing sleeve 36 Integral structure with a right shaft sleeve 37 , the side wall of the right bushing 37 is provided with a right connecting pin shaft 38 passing through the fixed rod 9; a left bearing 39 is provided between the support shaft 8 and the left side wall of the corrugated rod drum 6, and the support shaft 8 on the right side of the left bearing 39 A support shaft sleeve 40 is connected to the upper part by a flat key, the left end of the fixing rod 9 is covered with a left shaft sleeve 41 integrated with the support shaft sleeve 40, and the side wall of the left shaft sleeve 41 is provided with a left connecting pin passing through the fixing rod 9. shaft 42.

The structural design enables the fixed rod 9 and the support shaft 8 to remain fixed when the main shaft 7 and the threaded rod drum 6 are in a rotating state, and the setting of the flat key ensures that the fixed rod 9 is always in the positive direction of the support shaft 8 and the main shaft 7. above.

As shown in FIGS. 6 and 7 , the grid concave plate 2 includes a plurality of ribs 43 placed axially and arranged at equal intervals in the circumferential direction. The left and right ends of the ribs 43 are fixed with arc-shaped spokes 44 , and all A plurality of grid bars 45 pass through the rib plate 43 in the circumferential direction, and the grid bars 45 are arranged at equal intervals in the axial direction.

The rib plate 43 is made of a steel plate with a thickness of 2.5mm; the diameter of the grid bar 45 is 3mm; The total length in the axial direction is 1077.5 mm, the width in the circumferential direction is 642 mm, and the concave plate wrap angle is 180°.

As shown in FIG. 6 , two fixing plates 46 are arranged horizontally at the front end and the rear end of the grid concave plate 2 , and an adjusting stud 47 is fixed on the lower surface of each fixing plate 46 . An adjustment spring 48 is arranged on the outside of the frame 1 , the lower part of the adjustment stud 47 extends out of the frame 1 , and an adjustment nut 49 and a locking nut 50 are screwed at the lower end thereof.

The structural design of the adjusting stud 47, the adjusting spring 48, the adjusting nut 49, and the locking nut 50 achieves the purpose of elastically adjusting the grid concave plate 2. By adjusting the height of the adjusting nut 49 and the locking nut 50 on the adjusting stud 47, Change the compression degree of the adjusting spring 48, and then adjust the gap between the grid concave plate 2 and the corrugated rod drum 6, and the adjustment range is 0-15mm. The fixing plate 46 and the adjusting stud 47 are fixed by welding. The structural design can firstly adjust the position of the grid concave plate 2 to slow down the blockage; secondly, according to the characteristics of the threshing crop, the distance between the grid concave plate 2 and the corrugated rod drum 6 can be adjusted, so that the threshing device can be applied For different grains, the applicability is further improved.

As shown in Figures 4 and 5, the corrugated rod drum 6 includes a hexagonal star-shaped left panel 51 and a hexagonal star-shaped right panel 52, and the corners of the hexagonal star-shaped left panel 51 and the hexagonal star-shaped right panel 52 Both are fixed with a horizontally placed D-shaped bar 53, the D-shaped bar 53 is provided with tooth slots that are spirally distributed along its axial direction, and the D-shaped bar 53 is provided with a hexagonal star-shaped left plate 51 and a hexagonal star. The right panel 52 forms an iron plate 54 with a closed cavity and a hexagonal star-shaped cross section.

The grained bar drum 6 adopts the structure of six D-shaped bars 53, and uses the rubbing and brushing action of the grained bar drum 6 and the grid concave plate 2 on the crops to complete the separation of grains and straws. During the rotation of the D-shaped bar 53, the material Pushed to the right, the iron plate 54 is convenient to fix the tooth rod fixing hinge seat 32 while avoiding the entanglement of the straw. The length of the corrugated rod drum 6 is 1031.5mm, and the maximum diameter is 370mm. The D-shaped bar 53 and the iron plate 54 are connected by bolts.

As shown in FIG. 12 , the driving wheel 22 and the drum driving wheel 23 , the driving wheel 22 and the fan driving wheel 24 are all connected by a stepless transmission 55 ;

The motor 12 is located below the vibrating separation screen 13, on the right side of the frame 1. The electric motor 12 is connected to a reversing speed reducer and a continuously variable transmission 55 through a belt. The reversing reducer is a WPA reducer, located below the vibrating separation screen 13, and the reduction ratio is 1:10. The model of the continuously variable transmission 55 is AK185-28+PE216-28-8, which is located on the outer side of the frame 1 and has a speed change range of 1:4.

As shown in FIG. 12 , in order to make the structure of the whole machine compact, the centrifugal fan and the corrugated rod drum 6 adopt a coaxial structure and are driven separately to meet the different rotational speed requirements during threshing and cleaning. The main shaft 7 is connected with the electric motor 12 through the infinitely variable transmission 55, and the variable speed range of the infinitely variable transmission 55 is 1:4; ; Motor 12 speed: n ₃ =1400r/min.

The output shaft speed of the stepless transmission 55: n ₅ =350～5600r/min;

Spindle 7 speed:

Rotating shaft speed of centrifugal fan:

Reversing reducer input shaft speed:

Vibrating separation screen 13 drive shaft speed:

In the formula, d ₁ - the diameter of the drum drive wheel 23, d ₁ =300mm;

d ₂ - the diameter of the fan drive wheel 24, d ₂ =100mm;

d ₃ - the diameter of the driving wheel 22, d ₃ =100mm;

d ₄ - the diameter of the input shaft pulley of the reversing reducer, d ₄ =60mm;

d ₅ —diameter of the output shaft pulley of the continuously variable transmission 55, d ₅ =100mm.

In the specific implementation process, the left front part of the frame 1 is provided with a feeding port, and the feeding hopper 4 is connected with the feeding port by bolts I. The curvature of the left front part of the grid concave plate 2 is reduced to connect with the feed hopper 4 and the feed port; the curvature of the right rear part of the grid concave plate 2 is reduced to connect with the discharge port 5; the The structural design further improves the sealing performance of the threshing device.

Claims (9)

1. The utility model provides a grain crop is with flexible ratch line pole combination formula thresher which characterized in that: the automatic feeding machine comprises a rack (1) and a transmission mechanism, wherein a grid concave plate (2) with the top end flush with the upper end of the grid concave plate is arranged in the rack (1), an arc-shaped top cover (3) connected with the upper end of the rack (1) is covered above the grid concave plate (2), a feeding hopper (4) is fixedly penetrated through the left front part of the rack (1), and a discharge outlet (5) is formed in the right rear part of the rack (1); a threaded rod roller (6) in clearance fit with the bottom end part of the grid concave plate (2) is arranged in the grid concave plate; the right end of the frame (1) is provided with a main shaft (7) connected with the center of the right end face of the rasp bar roller (6); a supporting shaft (8) connected with the left end of the rack (1) is arranged in the center of the left end face of the rasp bar roller (6), a fixing rod (9) positioned right above the main shaft (7) and the supporting shaft (8) is arranged between the main shaft and the supporting shaft, a connecting sleeve (10) is sleeved on the fixing rod (9), a plurality of threshing toothed bars (11) which are radially arranged and spirally distributed are arranged on the connecting sleeve (10), and the threshing toothed bars (11) penetrate through the side wall of the rasp bar roller (6);

a motor (12) and a vibration separation sieve (13) are also arranged in the frame (1), the vibration separation sieve (13) is composed of a conveying sieve plate (14), a fine sieve (15) and a coarse sieve (16) which are connected in turn from left to right, and the conveying sieve plate (14) is positioned below the grid concave plate (2); the right side of the coarse screen (16) is connected with a tailing conveying hopper (17) with a backward discharge port, and the lower side is connected with a seed conveying hopper (18) with a forward discharge port; the right side of the rasp bar roller (6) is provided with a centrifugal fan of which an air inlet (19) faces the fine screen (15); the bottom of the vibrating separating screen (13) is fixedly connected with a driving rod (20); four supporting connecting rods (21) hinged with the vibrating separating screen (13) and the frame (1) are arranged between the vibrating separating screen and the frame;

the transmission mechanism comprises a driving wheel (22) fixedly assembled on an output shaft of the motor (12), a roller transmission wheel (23) fixedly assembled at the right end of the main shaft (7), a fan transmission wheel (24) fixedly assembled at the left end part of a rotating shaft of the centrifugal fan and a reversing speed reducer input transmission wheel (25), wherein the roller transmission wheel (23), the fan transmission wheel (24) and the reversing speed reducer input transmission wheel (25) are respectively in transmission connection with the driving wheel (22); a crank-rocker mechanism (26) is arranged between the output end of the reversing speed reducer and the bottom end of the driving rod (20).

2. The combined threshing device of claim 1, wherein the threshing device comprises: the centrifugal fan comprises a volute (27), blades (28) are arranged in the volute (27), an air inlet (19) is formed in the bottom end of the volute (27), and an air outlet (29) is formed in the rear side of the volute (27).

3. The combined threshing device of claim 1, wherein the threshing device comprises: the connecting sleeve (10) is formed by arranging a plurality of connecting sleeve bodies left and right, a toothed bar sleeve (30) which is integrated with the connecting sleeve bodies and is provided with a radial hole is arranged on each connecting sleeve body, one end of a threshing toothed bar (11) penetrates through the toothed bar sleeve (30), and a toothed bar connecting pin shaft (31) which penetrates through the threshing toothed bar (11) is arranged on the side wall of the toothed bar sleeve (30).

4. The combined threshing device of claim 1, wherein the threshing device comprises: the threshing toothed bars (11) are arranged in three rows along the axial direction of the fixed rod (9), and the three rows of threshing toothed bars (11) are uniformly distributed along the circumferential direction of the fixed rod (9); the side wall of the rasp bar roller (6) corresponding to each threshing toothed bar (11) is provided with a toothed bar fixed hinged support (32), and a linear bearing (33) sleeved on the threshing toothed bar (11) and two deep groove ball bearings (34) which are arranged on the outer side of the linear bearing (33) and distributed up and down are arranged in the toothed bar fixed hinged support (32).

5. The combined threshing device of claim 1, wherein the threshing device comprises: a right bearing (35) is arranged at the left end of the main shaft (7), a right bearing sleeve (36) is sleeved on the right bearing (35), a right shaft sleeve (37) which is integrated with the right bearing sleeve (36) into a whole is sleeved at the right end of the fixed rod (9), and a right connecting pin shaft (38) penetrating through the fixed rod (9) is arranged on the side wall of the right shaft sleeve (37); a left bearing (39) is arranged between the support shaft (8) and the left side wall of the rasp bar roller (6), a support shaft sleeve (40) is connected to the support shaft (8) on the right side of the left bearing (39) through a flat key, a left shaft sleeve (41) which is integrated with the support shaft sleeve (40) is sleeved at the left end of the fixing rod (9), and a left connecting pin shaft (42) which penetrates through the fixing rod (9) is arranged on the side wall of the left shaft sleeve (41).

6. The combined threshing device of claim 1, wherein the threshing device comprises: the grid concave plate (2) comprises a plurality of rib plates (43) which are axially arranged and are arranged at equal intervals along the circumferential direction, arc-shaped spokes (44) are fixed at the left end and the right end of each rib plate (43), a plurality of grid bars (45) penetrate through all the rib plates (43) along the circumferential direction, and the grid bars (45) are arranged at equal intervals along the axial direction.

7. The combined threshing device of claim 1, wherein the threshing device comprises: two fixing plates (46) are horizontally arranged at the front end part and the rear end part of the grid concave plate (2), an adjusting stud (47) is fixed on the lower surface of each fixing plate (46), an adjusting spring (48) located above the rack (1) is arranged on the outer side of each adjusting stud (47), the lower part of each adjusting stud (47) extends out of the rack (1), and an adjusting nut (49) and a locking nut (50) are screwed at the lower end of each adjusting stud.

8. The combined threshing device of claim 1, wherein the threshing device comprises: the rasp bar roller (6) comprises a hexagram-shaped left web (51) and a hexagram-shaped right web (52), the corners of the hexagram-shaped left web (51) and the hexagram-shaped right web (52) are both fixed with a D-shaped rasp bar (53) which is transversely placed, the D-shaped rasp bar (53) is provided with tooth grooves which are spirally distributed along the axial direction of the D-shaped rasp bar, and an iron plate (54) which forms a closed cavity with the hexagram-shaped left web (51) and the hexagram-shaped right web (52) and has a hexagram-shaped cross section is arranged in the D-shaped rasp bar (53).

9. The combined threshing device of claim 1, wherein the threshing device comprises: the driving wheel (22) is in transmission connection with the roller transmission wheel (23) and the driving wheel (22) is in transmission connection with the fan transmission wheel (24) through a stepless speed changer (55); the driving wheel (22) is in transmission connection with an input transmission wheel (25) of the reversing speed reducer through a belt (56).

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