CN105075543B - Corn thresher - Google Patents

Abstract

The invention discloses a corn thresher, which comprises a threshing device arranged in a threshing bin. The threshing device is provided with a threshing roller and a supporting roller driven by power. The threshing roller is provided with a spiral threshing rib. The threshing bin is equipped with a feeding hopper and a core outlet at the front and rear ends respectively, and a discharge port is arranged under the rear of the threshing bin; the supporting roller is located under one side of the threshing roller, and the other side of the supporting roller is There is an auxiliary support roller without power input on one side. The auxiliary support roller is rotatably arranged on the frame of the threshing machine, and is fixedly connected with the frame through a detachable connection structure. The auxiliary support roller, support roller and threshing roller A V-shaped threshing space is formed between the three cylinder surfaces, and the distance between the auxiliary support roller and the threshing roller gradually decreases along the corn cob threshing moving direction. The invention has the beneficial effects of high threshing efficiency, good integrity of corn kernels, and strong adaptability to the diameter of corn cobs.

Description

A kind of corn thresher

technical field

The invention relates to a corn thresher, in particular to a corn thresher with high separation efficiency and complete corn kernels.

Background technique

Corn is an important food crop and feed source. It is rich in nutrition and is also the food crop with the highest total output in the world. The edible part of corn is corn kernels. In order to improve the storage efficiency of corn, corn is usually stored after threshing. The corn thresher is a device that quickly separates corn kernels and corn cobs, and it is used to replace the traditional artificial corn threshing method. The existing corn thresher has many structures, most of which adopt the single-rotating threshing roller structure. There is a set distance gap between the threshing roller and the threshing bin wall. In the space of the threshing roller, the helical ribs on the threshing roller are used to shave and remove the corn kernels, and form a forward effect on the corn cob; the corn cob is squeezed by the threshing roller and the wall of the threshing bin to pop out of the space while threshing. , and then from the spiral rib strip on the threshing roller to the separation space to form threshing again, so that the threshing process of the whole corn cob is realized repeatedly. In addition, Chinese patent announcement number: CN203633184U, announcement date June 11, 2014, invention name, threshing drum device for corn threshing. This patent discloses a double-drum corn threshing device, which includes a smooth roller and a helical roller. The diameter of the smooth roller and the helical roller gradually increases from the feed port to the discharge port to form a tapered roller structure, thus forming It forms a long threshing section for corn cobs with a tapered shape to improve threshing efficiency. But because there is a power transmission relationship between the two rollers, the distance between the two cannot be adjusted, and when the rollers wear or need to thresh larger-diameter corn cobs, the threshing efficiency will be significantly reduced. For this reason, it is necessary to further improve the threshing device in the threshing machine to obtain good threshing efficiency and effect.

Contents of the invention

The object of the present invention is to address the deficiencies of the prior art and provide a corn thresher. The thresher sets the support roller in the threshing device under one side of the threshing roller, and at the same time, sets a non-power input roller on the other side of the support roller. The way of auxiliary support rollers forms a V-shaped threshing space among the three, and the use of auxiliary support rollers has no power input and is not limited by the position of the power transmission structure, so that the adjustable requirements for the width and change rate of the V space for threshing can be realized. Improve the adaptability to the change of the diameter of the threshing corn cob to ensure the integrity of the corn kernels and the high efficiency of threshing.

In order to achieve the above object, the present invention adopts the following technical solutions.

A corn thresher, comprising a threshing device arranged in a threshing bin, the threshing device is provided with a threshing roller and a support roller driven by power, the threshing roller is provided with a spiral threshing rib, the threshing roller and the support roller rotate in the same direction and have The set distance; the front and rear ends of the threshing bin are respectively provided with a feed hopper and a core outlet, and the rear part of the threshing bin is provided with a discharge port; the support roller is located below one side of the threshing roller, and the other side of the support roller is provided above. There are auxiliary support rollers with or without power input. The auxiliary support rollers are rotatably arranged on the frame of the threshing machine, and are fixedly connected with the frame through a detachable connection structure. A V-shaped threshing space is formed between them, and the distance between the two rollers of the auxiliary support roller and the threshing roller gradually decreases along the corn cob threshing moving direction.

With the corn thresher of the aforementioned technical scheme, since the threshing roller, the support roller and the auxiliary support roller constitute a V-shaped threshing space, the corn cobs are mainly threshed between the threshing roller and the support roller in the V-shaped space. The V width of the threshing space gradually narrows from the inlet end to the outlet end; when the corn cob enters the V space along the V groove, whether the large end or the small end of the corn cob enters first can form a good threshing effect. After the corn cob enters the V-shaped space, it contacts the support roller, and the support roller drives the corn cob to rotate through friction. Since the support roller and the threshing roller rotate in the same direction, the corn cob, the support roller and the threshing roller all form a rolling connection with the same rotation Direction, to properly reduce the relative speed between the threshing roller and the corn cob, so as to form a relatively small threshing line speed for the corn cob, thereby reducing the hidden danger of broken kernels and broken roots, reducing the breakage rate of corn kernels, and ensuring the intact rate of corn kernels Thereby reducing the hidden danger of insects in the storage process, prolonging the storage time, and improving storage efficiency and benefit. During the threshing process of corn cobs in the V-shaped main space, the threshing rollers will cause the corn cobs to bounce, and the auxiliary support rollers are used to make the corn cobs bounce back to between the support rollers and the threshing rollers, and the gap between the auxiliary support rollers and the threshing rollers The distance gradually decreases with the moving direction of the corn cob, that is, the width of the V-shaped space gradually narrows. When the diameter of the corn cob is gradually reduced after being partially threshed, the corresponding jumping running space is reduced, thereby reducing the rebound time and ensuring High threshing efficiency. By setting the appropriate aspect ratio of the threshing roller and the width of the exit of the V-shaped space, a good corn removal rate and corn cob integrity rate can be obtained, impurities in corn kernels can be reduced, and the quality of threshing corn can be improved. The rotatable auxiliary support roller and its cylindrical surface can effectively absorb the impact energy of the corn cobs, reduce the impact deformation of the corn kernels caused by the collision, and help maintain the integrity of the corn kernels.

Among them, the support roller and the threshing roller can be arranged in a structure parallel to the axis, so that the power transmission structure with simple structure and convenient processing can be used to make them rotate in the same direction; the axes of the threshing roller, the support roller and the auxiliary support roller can also be arranged Conical arrangement to further improve the threshing effect and efficiency, but the transmission mechanism between the support roller and the threshing roller needs to use the transmission structure such as universal joint or bevel gear, which is difficult to manufacture and high in manufacturing cost, so that the two form a clockwise or counterclockwise The same direction of rotation of the hour hand has the disadvantages of complex structure, high manufacturing difficulty and high cost.

Preferably, the threshing rollers are arranged obliquely with the front high and the rear low. To make the corn cobs have a tendency to move forward by themselves, increase the forward speed of the corn cobs, and improve the threshing efficiency.

Further preferably, the axes of the auxiliary support rollers and the threshing rollers are interlaced in space, and the axes of the auxiliary support rollers are inclined downward relative to the axes of the threshing rollers along the moving direction of the corn cobs. In order to gradually reduce the distance between the auxiliary support roller and the support roller, reduce the hidden danger of being stuck in the gap between the auxiliary support roller and the support roller, reduce the equipment failure rate, and further ensure the threshing efficiency.

Preferably, a floating baffle with a set length is arranged above the support roller, and the main body section of the floating baffle is parallel to the auxiliary support roller. To form a buffer against the corn cobs bouncing upwards, reduce the damage or deformation of the corn kernels caused by the impact, and further ensure the integrity of the threshed corn. Wherein, the length of the floating baffle is adapted to the length of the threshing area, so as to meet the buffering requirements of corn cobs or corncobs.

Preferably, the front end of the main body of the floating baffle is formed with an upwardly warped guiding portion. It is used to cooperate with the feeding hopper to form a spacious feeding space to ensure smooth feeding of corn cobs.

Further preferably, the threshing roller and the support roller are driven by the same V-belt or the same group. With a compact and simplified structure, the manufacturing cost is reduced.

Further preferably, the diameter of the support roller is much smaller than the diameter of the threshing roller. With a compact structure, the manufacturing cost is reduced, and it is beneficial to form a good V threshing space.

Still further preferably, the diameter of the auxiliary support roller is larger than that of the support roller and much smaller than that of the threshing roller. The compact structure reduces the manufacturing cost and forms a good V threshing space.

The invention has the beneficial effects of high threshing efficiency, good integrity of corn kernels, and strong adaptability to the diameter of corn cobs.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is the right side view of the partial structure in Fig. 1 of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the described embodiments.

Referring to Fig. 1 and Fig. 2, a corn thresher includes a threshing device located in the threshing bin, the threshing device is provided with a threshing roller 1 and a support roller 2 driven by power, and the threshing roller 1 is provided with two right-handed The spiral threshing rib 1a, the threshing roller 1 and the support roller 2 rotate in the same direction and have a set distance; the front and rear ends of the threshing bin are respectively provided with a feed hopper 6 and a core outlet 7, and the rear part of the threshing bin is provided with a discharge port 8. The threshing roller 1 is in an inclined arrangement with the front high and the rear low; wherein, the support roller 2 is located at the left side of the threshing roller 1, the diameter of the support roller 2 is much smaller than the diameter of the threshing roller 1, and the axes of the support roller 2 and the threshing roller 1 are parallel , the supporting roller 2 and the front end of the threshing roller 1 are respectively provided with a belt pulley, and the two belt pulleys are driven by the same belt 9, and rotate counterclockwise at the same time, certainly also can be driven by at least two belts 9 in the same group, and rotate counterclockwise simultaneously The same belt 9 or at least two belts 9 in the same group are driven to rotate by the motor pulley provided on the motor shaft of the motor 10 .

An auxiliary support roller 3 without power input is arranged above the other side of the support roller 2, and the diameter of the auxiliary support roller 3 is larger than the support roller 2 and far smaller than the threshing roller 1; the auxiliary support roller 3 is rotatably located at the on the frame 4, and fixedly connected with the frame 4 through a detachable connection structure, a V-shaped threshing space is formed between the auxiliary support roller 3, the support roller 2 and the threshing roller 1, and the auxiliary support roller 3 and the threshing roller The distance between the two rollers of the roller 1 decreases gradually along the corncob threshing movement direction; wherein, the auxiliary support roller 3 and the axis of the threshing roller 1 are arranged in a space staggered, and the axis of the auxiliary support roller 3 is along the corn cob axis relative to the threshing roller 1 axis. The moving direction of the bar is inclined downward; the auxiliary support roller 3 is fixedly connected with the frame 4 by the bolt 32 through the bearing seat 31, and the perforation used to pass through the bolt 32 on the bearing seat 31 is a waist-shaped hole, so as to adjust through the waist-shaped hole The fixed position of the bearing seat 31 realizes the purpose of adjusting the size of the V-shaped threshing space.

A floating baffle 5 with a set length is arranged above the support roller 2, the main body section of the floating baffle 5 is parallel to the auxiliary support roller 3, and the front end of the main body of the floating baffle 5 is formed with an upwardly warping guide portion; the floating baffle 5 The main body is located in the threshing bin, and the front and rear parts of the floating baffle 5 are respectively provided with suspenders 51, and the suspenders 51 respectively pass through the threshing bin cover 11 and the two beams 41 on the upper part of the frame 4, and the upper ends of the suspenders 51 are screwed together with two A locking nut 52 is provided, and a buffer spring 53 is provided between the beam 41 and the floating baffle 5 .

In this embodiment, the support roller 2 can also be arranged on the right side of the threshing roller 1. At this time, the support roller 2 and the threshing roller 1 rotate clockwise, and the spiral threshing ribs 1a on the threshing roller 1 are wound around the threshing roller in a left-handed shape. 1 on.

In this embodiment, the support roll 2 and the threshing roll 1 can also be set at a staggered angle, so that the V-shaped groove depth of the V-shaped threshing space formed between the threshing roll 1, the support roll 2 and the auxiliary support roll 3 along the The moving direction of corncob threshing becomes shallower and the width gradually narrows, so as to obtain a more ideal threshing effect, but it has to pay the price of complex transmission structure and high manufacturing cost.

In this embodiment, the number of spiral threshing ribs 1a can be reasonably selected as 1 or 3 or more according to parameters such as the diameter of the threshing roller 1, the helix angle, and the rotational speed of the threshing roller 1.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (8)

1. A corn thresher, comprising a threshing device located in the threshing bin, the threshing device is provided with a threshing roller (1) and a support roller (2) driven by power, and the threshing roller (1) is provided with a spiral threshing rib (1a), the threshing roller (1) and the support roller (2) rotate in the same direction and have a set distance; the front and rear ends of the threshing bin are respectively provided with a feed hopper (6) and a core outlet (7), It is characterized in that the supporting roller (2) is located below one side of the threshing roller (1), and the other side of the supporting roller (2) is provided with an auxiliary supporting roller without power input. (3), the auxiliary support roller (3) is rotatably arranged on the frame (4) of the threshing machine, and is fixedly connected with the frame (4) through a detachable connection structure, the auxiliary support roller (3), the support roller (2) and the threshing roller (1) form a V-shaped threshing space between the three drum surfaces, and the distance between the auxiliary support roller (3) and the threshing roller (1) gradually decreases along the corn cob threshing movement direction. 2 . The corn thresher according to claim 1 , characterized in that, the threshing roller ( 1 ) is arranged obliquely with the front high and the rear low. 3. The corn thresher according to claim 1, characterized in that, the axes of the auxiliary support rollers (3) and the threshing rollers (1) are interlaced in space, and the axes of the auxiliary support rollers (3) are relative to the threshing rollers. The axis of the roller (1) is inclined downward along the moving direction of the corn cob. 4. The corn thresher according to claim 1, characterized in that a floating baffle (5) with a set length is arranged above the support roller (2), and the main body section of the floating baffle (5) is parallel to the auxiliary support roller (3). 5. The corn thresher according to claim 4, characterized in that, the front end of the main body of the floating baffle (5) is formed with an upwardly warping guide portion. 6. The corn thresher according to any one of claims 1-5, characterized in that, the threshing roller (1) and the support roller (2) are driven by the same V-belt or the same group. 7. The corn thresher according to any one of claims 1-5, characterized in that the diameter of the support roller (2) is much smaller than the diameter of the threshing roller (1). 8. The corn thresher according to claim 7, characterized in that the diameter of the auxiliary support roller (3) is larger than the support roller (2) and much smaller than the threshing roller (1).