CN106385934A - Rear frame assembly of peanut combine - Google Patents

Abstract

The invention relates to a rear frame assembly of a peanut combine harvester, which belongs to the technical field of agricultural machinery. The assembly includes a rear frame with a three-dimensional frame structure. The front and upper part of the rear frame supports a pair of fruit-picking clamping chains composed of loop conveyor chains. A snap-finger vibrating screen with a high front and a low rear is placed under the fruit picking roller, and a reverse scraper conveyor belt with a low front and a high back is placed under the middle of the fruit picking roller and above the middle of the snap-finger vibrating screen. A horizontal conveyor belt is installed under the rear end, the front fan with the air outlet facing the snap finger vibrating screen is placed under the front part of the snap finger vibrating screen, and the rear fan with the air outlet facing the output direction is placed under the rear part of the snap finger vibrating screen. The invention has a very compact structure and ensures the separation effect while significantly improving the cleaning and separation efficiency.

Description

Rear frame assembly of a peanut combine harvester

technical field

The invention relates to a peanut combine harvester, in particular to a peanut combine harvester rear frame assembly, belonging to the technical field of agricultural machinery.

Background technique

For the typical structure of the peanut combine harvester, see ZL201310280913.9 Chinese invention patent, which discloses a two-row peanut combine harvester, the chassis of which is fixed with a harvesting platform, a transition clamping conveying device, and a rear frame assembly in sequence. The harvesting platform includes a frame on which there are horizontal and parallel upper main beams and lower main beams. The upper main beam is a rotating beam and is connected with the rear frame assembly. On the harvesting table, the elastic pressing rod parts and the clamping chain are used to carry out the clamping and conveying method, and the conveying steering is completed with devices such as the finger belt and the elastic pressing piece, and the form of two ridges combined conveying is realized; and through the upper edge of the lower main beam The main girder moves and fixes the welding frame in the axial direction, so that the welding frame and the first pull-up and clamping chain fixedly connected to it, the first and fifth elastic pressure rod components move horizontally together, and at the same time, adjust the second elastic pressure rod The telescopic length of the second pressing bar on the component keeps the second pressing bar and the fifth pressing bar in a connected state, which can be manually adjusted according to the distance between the two ridges of peanuts; at the same time, by setting the transition clamping and conveying device, the peanut Seedlings and vines transition from inclined conveying to horizontal conveying, which reduces the height and center of gravity of the whole machine. Although this invention optimizes the structure of the peanut combine harvester and improves the versatility and safety, practice has proved that in the rear frame assembly of the harvester, the vibrating screen is directly installed under the fruit picking roller, and the middle and rear ends of the fruit picking roller are removed. The peanuts and impurities fall directly on the rear of the vibrating screen, and there is not enough screening area and screening time for screening, resulting in a high impurity rate; and the fan is installed under the middle and rear of the vibrating screen, resulting in no wind separation on the front screen surface, and the wind The selection effect is poor, resulting in the vibrating screen being easy to hang film and seedlings.

Contents of the invention

The object of the present invention is to provide a peanut combine harvester rear frame assembly with high separation efficiency, good effect and compact structure in view of the shortcomings of the above-mentioned technologies.

In order to achieve the above object, the basic technical scheme of the rear frame assembly of the peanut combine harvester of the present invention: the rear frame platform comprising a three-dimensional frame structure, the front and upper part of the rear frame platform supports a pair of fruit picking clamping chains composed of loop conveyor chains, A pair of fruit-picking rollers with low front and high rear are placed under the fruit-picking clamping chain, and a snap-finger vibrating screen with a high front and low rear is placed under the fruit-picking rollers, and the bottom of the middle part of the fruit-picking rollers is placed above the middle of the snap-finger vibrating screen. A reverse scraper conveyor belt with low front and high back, a horizontal conveyor belt is installed under the rear end of the snap finger vibrating screen, and the air outlet is placed under the front part of the snap finger vibrating screen. The rear fan with the air outlet facing the output direction is arranged under the rear part.

A further perfection of the present invention is that the input end of the fruit-picking holding chain is connected with the transitional holding chain, and the output end of the fruit-picking holding chain is connected with the tail chain.

When working, the peanuts and impurities are brushed off from the seedlings by the fruit picking roller. The peanuts and impurities brushed at the front fall directly on the finger vibrating screen, and the peanuts and impurities brushed at the rear fall on the scraper conveyor belt. And it is transported to the front of the snap finger vibrating screen in a direction. This unconventional reverse conveying auxiliary forward conveying method effectively increases the cleaning area with a very compact structure, and under the double action of the front and rear fans, it makes The whole sieve surface is air-selected, and as a result, the present invention ensures the separation effect while significantly improving the cleaning and separation efficiency.

Description of drawings

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

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic perspective view of the embodiment in Fig. 1 .

Fig. 4 is a three-dimensional structural schematic diagram of Fig. 3 after the transmission system is installed.

detailed description

Embodiment one

The basic structure of the rear frame assembly of the peanut combine harvester of the present embodiment is shown in Figures 1 to 4. The rear frame W1 of the three-dimensional frame structure supports the fruit picking clamping chain W3 formed by a pair of loop conveyor chains. A pair of fruit picking rollers W2 with low front and high rear and an angle of 24° between the axial direction and the horizontal plane (20°-30° is acceptable) are placed under the holding chain W3. 5° (2°-8° is acceptable) snap-finger vibrating screen W7 (for its typical structure, please refer to the Chinese patent document with application number 201410172501.8), these are basically the same as the prior art, and will not be described in detail. The bottom of the middle part of the fruit picking roller W2 and the upper part of the finger vibrating screen W7 are placed with a reverse scraper conveyor belt W4 with a low front and a high rear, and an angle of 12° to the horizontal plane (8°-15° is acceptable), and the back of the finger vibrating screen W7 The draft mover W11 is installed at the end (for its typical structure, please refer to the Chinese patent document with application number 201420826609.X), the horizontal conveyor belt W10 is installed at the bottom, and the front fan W8 with the air outlet facing the snap finger vibrating screen is installed under the front part of the snap finger vibrating screen W7. The rear blower fan W6 with the air outlet facing the output direction is arranged below the vibrating screen W7 rear portion. In addition, the input end of the fruit-picking clamping chain W3 is connected with the transitional clamping chain W9, and the output end is connected with the tail chain W5, so as to realize the association with the front and rear parts of the harvester. The design of other mechanical transmissions, the setting of the tensioning mechanism, etc. are not difficult for those skilled in the art to realize according to the mechanical principle, so they will not be described in detail.

When working, the peanut seedlings and tendrils are held and transported backward by the fruit picking chain, the peanuts and impurities in the lower part are picked off from the seedling tendrils by the fruit picking roller, and the peanuts and impurities in the front brush fall directly on the vibrating fingers. On the sieve, the peanuts and impurities brushed off from the rear fall on the scraper conveyor belt, and are transported to the front of the finger vibrating screen in a direction, so that the cleaning area is effectively increased, and the peanuts and impurities are fully separated. Under the double action of the rear fan, the entire screen surface can be air-selected, and the stems, leaves, sand and other sundries are separated and discharged out of the machine. The peanuts are output from the vibrating screen and fall on the horizontal conveyor belt from the rack interval of the drafter. It is sent to the subsequent vertical elevator to the fruit collection box, and the rack of the draft remover discharges impurities such as flower growth stems and residual film; the peanut vines after pod removal continue to be clamped and transported backward until they are thrown out of the machine. This embodiment has a very compact structure. Practice has proved that when it is applied to a peanut combine harvester, it can significantly improve the cleaning and separation efficiency while ensuring the separation effect and avoid hanging film and seedlings on the vibrating sieve.

Claims (6)

1. A rear frame assembly of a peanut combine harvester, including a rear frame (W1) with a three-dimensional frame structure, and the front and upper part of the rear frame supports a pair of fruit picking and holding chains (W3) composed of a loop conveyor chain. A pair of fruit picking rollers (W2) with low front and high rear are placed under the fruit picking clamping chain, and a finger vibrating screen (W7) with a high front and low rear is placed under the fruit picking rollers. A reverse scraper conveyor belt (W4) with low front and high back is placed above the middle of the screen, a horizontal conveyor belt is installed under the rear end of the snap finger vibrating screen, and an air outlet is placed under the front of the snap finger vibrating screen to face the front of the snap finger vibrating screen The fan (W8), the rear fan (W6) with the air outlet facing the output direction is placed under the rear part of the vibrating screen. 2. The peanut combine harvester rear frame assembly according to claim 1, characterized in that: the input end of the fruit-picking clamping chain is connected to the transitional clamping chain (W9), and the output end of the fruit-picking clamping chain is connected to Tail chain (W5) articulation. 3. The peanut combine harvester rear frame assembly according to claim 1 or 2, characterized in that: the rear end of the snap-finger vibrating screen is equipped with a scraper (W11). 4. The rear frame assembly of the peanut combine harvester according to claim 3, wherein the angle between the axial direction of the fruit picking roller and the horizontal plane is 20°-30°. 5. The rear frame assembly of peanut combine harvester according to claim 4, characterized in that: the angle between the snap finger vibrating screen and the horizontal plane is 2°-8°. 6 . The peanut combine harvester rear frame assembly according to claim 4 , wherein the angle between the reverse scraper conveyor belt and the horizontal plane is 8°-15°.