CN209732052U - A Combine Harvester and Its Extrusion Forced Conveying and Evenly Distributing Device - Google Patents

Abstract

The utility model discloses a combine and come off thing forced transport equipartition device thereof, including drive mechanism, two-way transport screw feeder, screw feeder bottom plate, drive mechanism is located and carries the equipartition device anterior, including n to bevel gear and transmission shaft, two-way transport screw feeder both ends screw feeder blade antiposition, the screw feeder bottom plate is located two-way transport screw feeder below, screw feeder bottom plate middle section opening both sides are equipped with a plurality of separation holes. The utility model changes the reciprocating motion of the traditional return plate into the rotary motion, reduces the amplitude and leads the conveying of the fallen objects to be smoother; in addition, the bottom plate of the auger transversely adopts an arrangement mode of auger grooves with unequal intervals, and the rotation directions of the bidirectional conveying auger are different, so that the threshed objects entering the screen surface are more uniformly distributed, and the shaking plate and the return plate in the traditional cleaning device are more suitable for working conditions of large feeding amount, excessive impurities, nonuniform transverse distribution of the threshed objects and the like in the harvesting process.

Description

A Combine Harvester and Its Extrusion Forced Conveying and Evenly Distributing Device

technical field

The utility model relates to the field of combine harvesters, in particular to a combine harvester and a device for forced conveying and uniform distribution of extracts thereof.

Background technique

When the combine harvester is harvesting in the field, after the crops are threshed and separated, the mixture that enters the cleaning device is called the extrudate, and its main components include grains, short stems, light debris and a small amount of long stems stalk. The distribution uniformity and conveying smoothness of the extract directly affect the working efficiency and performance of the cleaning device, and are also the key factors that restrict the further increase of the rated feeding amount of the combine harvester design. Currently, there have been some studies on improving the distribution and delivery of exudates. Chinese patent (CN107182453A) designed a grain cleaning system with uniform material distribution and pre-cleaning functions. The material shaking plate can make the grains evenly distributed in the radial direction of the cleaning mechanism when cleaning grains, and can Pre-cleaning is carried out for the extruded matter, so that some grains can be sieved in advance to improve the cleaning efficiency, but the vibration is relatively large. Chinese patent (CN108055912A) is a utility model of a different direction distribution and evenly distributed grain exudate shaking and throwing device. Conveyance fluency issues. The Chinese patent (CN204811000U) installs a deflector intelligent control structure in the threshing device, which can realize automatic control of the movement speed and direction of the extruded objects, but it needs to collect signals through various sensors to control the movement of the mechanism, which is costly and lacks stability. sex. Chinese patent (CN203181617U) provides a diversion device for a harvester cleaning screen, including a bottom plate and a V-shaped diversion groove. , the material will not easily accumulate, but the V-shaped grooves are equidistantly distributed, which does not conform to the actual falling distribution position of the protruding objects, and the effect of uniform distribution is limited. Chinese patent (CN107135750A) has designed a combine harvester return conveying plate, above which a number of guide strips are installed, which can make the material evenly fall on the shaking plate, and under the shaking action of the shaking plate, the prolapsed matter can be cleaned The distribution in the selection room is relatively uniform, but the prolapses are easier to accumulate in the front and middle of the cleaning device, which increases the cleaning load and causes greater vibration.

In addition to the above shortcomings, the main focus of existing research is to increase the shaking plate, return conveying plate, guide strip, etc. Although the uniformity of the distribution of the prolapse can be improved to a certain extent, the smoothness of conveying has not been solved. And the problem of large vibration of the mechanism. Especially when harvesting super rice, the exfoliated matter increases sharply per unit time, and it needs to be evenly distributed and transported to the top of the cleaning device screen as soon as possible to prevent accumulation.

Utility model content

In order to achieve the above purpose and solve the existing problems in the research on the uniform distribution and transportation of the exudates, the utility model provides a combine harvester and its forced conveying and uniform distribution device for the exudates. The output of the operation is evenly distributed and transported, and it has a compact structure, low vibration and high stability. The technical scheme that the utility model takes is as follows:

The device for forced conveying and uniform distribution of extracts from the combine harvester includes a two-way conveying auger. One end of the two-way conveying auger is fixedly connected to the transmission mechanism, and the other end is fixedly connected to the bottom plate of the auger. For the auger blades with opposite rotation directions, the bottom end of the auger groove of the auger bottom plate is provided with an opening, and the auger shaft between the auger blades with opposite rotation directions is opposite to the opening.

In the above solution, the transmission mechanism includes n pairs of bevel gears and transmission shafts, each pair of bevel gears meshes vertically with each other, one of the bevel gears is sleeved on the transmission shaft, and the other bevel gear is fixedly connected to the auger shaft, wherein n≥2 .

In the above solution, the rotation direction of the leftmost or rightmost two-way conveying auger is opposite to that of the longitudinal axial flow threshing drum, and the rotation direction of the remaining two-way conveying augers is the same as that of the longitudinal axial flow threshing drum.

In the above scheme, there are n auger troughs, and when the longitudinal axial flow threshing drum rotates clockwise, the width of the auger trough decreases successively; when the longitudinal axial flow threshing drum rotates counterclockwise, the width of the auger trough increase in turn.

In the above solution, multiple rows of separation holes are arranged symmetrically on both sides of the opening, and the total length of the multiple rows of separation holes is less than or equal to the length of the upper vibrating screen, and the length of the opening is in the range of 200-300mm.

In the above scheme, the shape of the separation hole can be circular, rectangular, square and waist-shaped, the diameter range of the circular separation hole is 50-120mm, and the maximum length range of the rectangle, square and waist-shaped separation hole is It is 50-120mm.

In the above scheme, the angle range between the axial installation direction and the horizontal line of the conveying uniform distribution device is 5°-15°, the minimum vertical distance between one end and the cutting flow concave plate screen is between 0-20mm, and the other end is between the longitudinal axial flow The minimum distance of the concave screen is between 0-100mm.

A combine harvester, comprising the above-mentioned device for forcing and evenly distributing the extruded matter.

The beneficial effects of the utility model are as follows:

The utility model changes the reciprocating motion of the traditional return plate into a rotary motion, the vibration is greatly reduced, and the extraction material is transported more smoothly. At the same time, the shaking plate in the traditional cleaning device is removed, and the quality and vibration are further reduced. The conveying efficiency is high, the auger blades have forced conveying ability, and the prolapsed matter is not easy to accumulate. In addition, the bottom plate of the auger is horizontally arranged with unequal spacing of the auger slots, and the rotation direction of the auger is not consistent, so that the lateral distribution of the prolapsed matter entering the screen surface is more uniform, which is better than the shaking plate, return plate and other structures in the traditional cleaning device. It is more suitable for working conditions such as large feeding amount, excessive waste, and uneven lateral distribution of the extract during the harvesting process.

Description of drawings

Figure 1 is a left view of the structure of the device for forced conveying and uniform distribution of extracts from the combine harvester;

Fig. 2 is a three-dimensional schematic diagram of a device for forced conveying and uniform distribution of extracts from a combine harvester;

Fig. 3 is a three-dimensional schematic diagram of the bottom plate of the auger;

Fig. 4 is a left view of the clockwise two-way conveying auger structure;

Fig. 5 is the left view of the two-way conveying auger structure turning counterclockwise;

Fig. 6 is a front view of the structure of the device for forced conveying and uniform distribution of extracts from the combine harvester;

Fig. 7 is a schematic diagram of the moving direction of the ejected object and the airflow direction.

In the figure: 1. Tangential flow concave plate screen, 2. Vertical axial flow concave plate screen, 3. Auger bottom plate, 4. Two-way conveying auger, 5. Secondary miscellaneous auger, 6. Multi-air channel cleaning device , 7, transmission mechanism, 301, separation hole, 302, opening in the middle section of the bottom plate of the auger, 303, side plate A, 304, side plate B, 401, left-handed auger blade, 402, auger shaft, 403, right-handed auger Blade, 501, vertical miscellaneous auger, 502, horizontal miscellaneous auger, 601, multi-channel centrifugal fan, 602, upper vibrating screen, 603, tail screen, 701, bevel gear Ⅰ, 702, bevel gear Ⅱ , 703, bevel gear Ⅲ, 704, bevel gear Ⅳ, 705, drive shaft, 6011, upper air duct extension air duct.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the utility model is not limited thereto.

Example 1

As shown in Figure 1, it is a left view of the structure of the forced conveying and uniform distribution device of the combine harvester, including a transmission mechanism 7, a two-way conveying auger 4, and an auger bottom plate 3, and the transmission mechanism 7 is located at the end of the conveying and uniform distribution device. On the left side, one end of the two-way conveying auger 4 is fixedly connected to the transmission mechanism 7, and the other end is fixed on the auger bottom plate 3. Road 6011 is parallel, that is, the angle between the installation direction and the horizontal line is between 5°-15°, and it is as close as possible to the cutting flow concave screen 1 and the longitudinal axial flow concave screen 2. The minimum vertical distance of the concave screen 1 is between 0-20mm, and the minimum distance between the right end and the longitudinal axial flow concave screen 2 is between 0-100mm, which increases the vibration of the upper layer where the protruding objects fall into the multi-air channel cleaning device 6 The vertical distance of the sieve 602 is conducive to the airflow to blow the light impurities out of the machine in advance and reduce the cleaning load.

As shown in Figure 2, it is a three-dimensional schematic diagram of the forced conveying and uniform distribution device of the combined harvester. The transmission mechanism 7 consists of a pair of bevel gears I701, a pair of bevel gears II702, a pair of bevel gears III703, a pair of bevel gears IV704 and Transmission shaft 705 is composed of each pair of bevel gears perpendicular to each other and meshing with each other. One of the bevel gears in each pair of bevel gears is set on the transmission shaft 705. Both ends of the transmission shaft 705 are fixed on the frame of the harvester. One end of the auger shaft 402 is connected together, and the auger shaft at this end is fixedly connected with the side plate B304 through a bearing, and the other end of the auger shaft 402 is also fixedly connected with the side plate A303 through a bearing. The two-way conveying auger 4 adopts the reverse arrangement of the left-handed auger blade 401 and the right-handed auger blade 403 to realize the backward conveying of the protruded material under the tangential flow concave plate sieve 1, and the backward conveying of the prolapsed material under the longitudinal axial flow concave plate sieve 2. The part of the prolapse is conveyed forward, and the conveying efficiency is high. According to the test of the distribution position of the prolapse, the installation direction of bevel gear I701 is opposite to that of bevel gear II702, bevel gear III703, and bevel gear IV704, and the two-way conveying auger 4 connected to bevel gear I701 is connected to the other three two-way conveying augers 4 The direction of rotation is opposite.

As shown in Figure 3, it is a three-dimensional schematic diagram of the auger bottom plate, the auger bottom plate 3 is provided with 4 auger grooves, the two-way conveying auger 4 is located inside the auger groove, and the auger groove bottom plate is located below the edge of the auger blade 2- At 8mm, there is an opening 302 in the middle of the bottom of the auger slot, the length of which is between 200-300mm, so that the falling position of the prolapse is in the front middle of the upper vibrating screen 602, and the screen surface of the upper vibrating screen is effectively used Area, the opening 302 in the middle section of the auger bottom plate is opposite to the middle smooth section of the auger shaft 402, and the prolapsed matter falls from here to the multi-air channel cleaning device 6 for cleaning. The two sides of the opening 302 in the middle section of the auger bottom plate are respectively provided with three square separation holes 301 symmetrically (the separation holes are located on the same row). , rectangle, and waist-shaped maximum length between 50-120mm, the separation hole 301 can not exceed the leftmost side of the upper vibrating screen 602, to prevent the prolapse from falling on the screen surface, the separation hole 301 can be one or more rows (separation The total length of the hole 301 distribution is less than or equal to the length of the upper vibrating screen 602), this structure increases the uniformity of the protruded material falling into the screen surface, and can solve the flow of materials pushed by the left-handed auger blade 401 and the right-handed auger blade 403 Fluctuation prevents excessive flow of the prolapsed matter falling at the opening 302 in the middle section of the auger bottom plate per unit time, so that part of the prolapsed matter falls to the upper vibrating screen 602 in advance to improve the cleaning efficiency.

As shown in Fig. 4 and Fig. 5, it is a left view of two kinds of two-way conveying auger structures with different directions. The two-way conveying auger 4 includes a left-handed auger blade 401, an auger shaft 402, and a right-handed auger blade 403; The rotation direction of the two-way conveying auger 4 connected to the bevel gear II702, bevel gear III703, and bevel gear IV704 is counterclockwise, and the rotation direction of the two-way conveying auger 4 connected to the bevel gear I701 is clockwise, so as to avoid the four two-way conveying augers The cylinders rotate in the same direction to prevent unilateral accumulation of prolapsed objects. The front blade of the two-way conveying auger 4 that turns counterclockwise is a right-handed auger blade 403, and the rear blade is a left-handed auger blade 401, and the front blade of the clockwise two-way conveying auger 4 is a left-handed auger blade 401, and the rear blade is a left-handed auger blade 401. The end blade is a right-handed auger blade 403 . According to the judgment rule of the material movement direction of the screw auger, these two kinds of two-way conveying augers 4 can realize the backward movement of the front-end protruding objects and the forward movement of the rear-end protruding objects, which realizes the replacement of the traditional shaking plate and return plate. purpose with little vibration and the ability to force delivery. Especially in the case of harvesting with large feeding volume, the flow of extruded material is relatively large, and there are many residues and stalks, which are easy to accumulate on the traditional shaking plate and return plate, and it is difficult to be evenly distributed and transported to the cleaning In the device, the auger conveying does not have this problem, which can quickly and evenly force-transport the larger flow of extracts to the top of the vibrating screen, improving the cleaning performance and efficiency.

As shown in Figure 6, it is a front view of the structure of the combined harvester's forced conveying and uniform distribution device. The width of the auger groove of the auger bottom plate 3 increases sequentially when the longitudinal axial flow threshing drum rotates counterclockwise, and the width is 220 mm. , 240mm, 270mm, 290mm, the width of the auger groove decreases in turn when the longitudinal axial flow threshing drum rotates clockwise, combined with the test of the distribution position of the ejection, the ejection is easy to accumulate on one side, so the width of the auger groove is determined according to the accumulation position of the ejection Different settings can further prevent the unilateral accumulation of the protruding matter, make the distribution of the protruding matter more uniform in the lateral direction, and also increase the working reliability of the two-way conveying auger 4 to prevent clogging.

As shown in Figure 7, it is a schematic diagram of the movement direction and airflow direction of the extracted matter. During the harvesting operation, the extracted matter is smoothly and evenly transported to the opening 302 in the middle section of the bottom plate of the auger by the two-way conveying auger 4, and then falls to the upper layer for vibration In the front middle position of the sieve 602, part of the extruded material falls to the upper vibrating sieve 602 in advance through the separation hole 301. During the falling process of the protruding matter, most of the light impurities contained in it are cleaned up in advance by the extended air duct 6011 of the upper air duct, and the rest of the protruding matter passes through the joint action of the multi-channel centrifugal fan 601 and the vibrating screen. Most of them are cleaned, and the prolapsed matter passing through the rear of the upper vibrating screen 602 and the tail sieve 603 enters the horizontal waste auger 502 of the secondary waste auger 5, and then is removed by the vertical waste auger 501. It is transported to the upper part of the rear part of the forced conveying and uniform distribution device for the extruded matter, and the secondary cleaning can further reduce the impurity rate of the harvested grains.

The utility model changes the reciprocating motion of the traditional return plate into a rotary motion, the vibration is greatly reduced, the transport of the prolapse is more smooth, and it has the ability to force the conveyance, and the prolapse is not easy to accumulate. At the same time, the shaking plate is removed, which further reduces the quality and vibration. . In addition, the auger bottom plate 3 is horizontally arranged with unequal spacing auger slots, and the rotation direction of the two-way conveying auger 4 is also inconsistent, so that the lateral distribution of the protruding objects entering the screen surface is more uniform, and it is not easy to be blocked, which improves the cleaning efficiency and performance. . Compared with the shaker plate, return plate and other structures in the traditional cleaning device, it is more suitable for the working conditions such as large feeding amount, excessive waste, and uneven lateral distribution of the extract during the harvesting process, and the cleaning performance and efficiency are better.

Example 2

A combine harvester, including the extruded matter forced conveying uniform distribution device in embodiment 1, the structure and beneficial effects of the uniform distribution device are as described in embodiment 1, and will not be repeated here.

Described embodiment is the preferred embodiment of the present utility model, but the present utility model is not limited to above-mentioned embodiment, under the situation that does not deviate from the essential content of the present utility model, any obvious improvement that those skilled in the art can make, Replacement or modification all belong to the protection scope of the present utility model.

Claims (10)

1. combine takes off thing compulsory transport equipartition device, its characterized in that, including two-way transport screw feeder (4), two-way transport screw feeder (4) one end links firmly with drive mechanism (7), and the other end links firmly with screw feeder bottom plate (3), is provided with a pair of opposite direction of rotation's screw feeder blade on screw feeder axle (402) of two-way transport screw feeder (4), and the screw feeder tank bottom of screw feeder bottom plate (3) is equipped with opening (302), screw feeder axle between opposite direction of rotation's the screw feeder blade is relative with opening (302).

2. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 1, wherein the transmission mechanism (7) comprises n pairs of bevel gears and a transmission shaft (705), each pair of bevel gears are vertically meshed with each other, one bevel gear is sleeved on the transmission shaft (705), the other bevel gear is fixedly connected with the auger shaft (402), and n is more than or equal to 2.

3. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 1, characterized in that the rotation direction of the bidirectional conveying auger (4) positioned at the leftmost side or the rightmost side is opposite to the rotation direction of the longitudinal axial flow threshing cylinder, and the rotation direction of the other bidirectional conveying auger (4) is the same as the rotation direction of the longitudinal axial flow threshing cylinder.

4. The combine harvester of claim 1, wherein the number of the auger slots is n, and the width of the auger slots decreases in sequence when the longitudinal axial flow threshing cylinder rotates clockwise and increases in sequence when the longitudinal axial flow threshing cylinder rotates counterclockwise.

5. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 1, wherein a plurality of rows of separation holes (301) are symmetrically arranged on both sides of the opening (302), and the total length of the distribution of the separation holes is less than or equal to the length of the upper layer vibrating screen (602).

6. The forced delivery and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 5, wherein the shape of the separation holes (301) can be round, rectangular, square and kidney-shaped.

7. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 6, wherein the diameter of the round separation holes is in the range of 50-120mm, and the maximum length of the rectangular, square and kidney-shaped separation holes is in the range of 50-120 mm.

8. The forced delivery and uniform distribution device for the outgassed of the combine harvester as recited in claim 5, wherein the length of the opening (302) is in the range of 200 mm and 300 mm.

9. The forced conveying and uniformly distributing device for the threshed objects of the combine harvester as claimed in any one of the claims 1 to 8, wherein the axial installation direction of the forced conveying and uniformly distributing device forms an angle with the horizontal line within the range of 5 to 15 degrees, the minimum vertical distance between one end of the forced conveying and uniformly distributing device and the tangential flow concave plate sieve is 0 to 20mm, and the minimum distance between the other end of the forced conveying and uniformly distributing device and the longitudinal flow concave plate sieve is 0 to 100 mm.

10. A combine harvester, characterized in that it comprises a forced delivery and distribution device for the threshed as in any one of claims 1 to 8.