CN106622993A - Fruit turning mechanism and fruit classifying device thereof - Google Patents

Abstract

The invention discloses a fruit turning mechanism and a fruit grading device thereof, which include a power device and a horizontally arranged rotor. The two ends of the rotor along the axial direction are respectively provided with rotor support frames for supporting the rotor and cooperating with its rotation. A plurality of fruit holes capable of accommodating a single fruit are provided at circumferential intervals, and each fruit hole is provided with at least one roller shaft that can rub against the fruit. When the roller shaft rotates, the roller shaft can drive the fruit hole where it is located. The fruit inside is turned over, and the power device includes a rotor driving device and a roller shaft driving device. The rotor driving device is connected to the rotor through the transmission system I, and the roller shaft driving device is connected to the roller shaft through the transmission system II. The present invention is simple in structure, easy to use and can realize the automatic turning over of fruit, realizes automatic processing from fruit feeding, detection to final packaging, reduces labor cost and labor intensity of workers.

Description

A kind of fruit turnover mechanism and its fruit grading device

technical field

The invention relates to a fruit grading and packaging device, in particular to a fruit turning mechanism and a fruit grading device.

Background technique

In recent years, with the in-depth reform of my country's rural economic system and the development of the market economy, fruit production has increased significantly year by year, and the fruit industry occupies an important position in the national economy. According to the data of the National Bureau of Statistics: in 2014, my country's total fruit output increased to 261.4224 million tons, an increase of 4.2% over the same period of the previous year; the total output of apples was 40.9232 million tons, an increase of 3.1% year-on-year, accounting for 15.65% of the total domestic fruit output in the same period; The total output of citrus was 34.9266 million tons, an increase of 5.2% year-on-year, accounting for 13.36% of the total domestic fruit output in the same period; the output of pears was 17.9644 million tons, an increase of 3.8% year-on-year, accounting for 6.87% of the total domestic fruit output in the same period.

After the fruit is picked from the fruit tree, the quality of the fruit needs to be tested first, and the fruit that is beginning to rot is screened out. This kind of detection method usually uses the detection of artificial naked eyes. The detection worker picks up a fruit and observes the outside with his eyes. The good ones are sieved, and the bad ones are thrown away. However, this method requires inspection workers to pick up and put them down one by one, which is not only inefficient, but also the work intensity of the inspection workers is very high. Working for a long time will make the workers feel tired, and it is prone to false inspections and missed inspections. In order to solve the above problems, many large orchards currently use image acquisition devices to detect the appearance of the fruit. During the detection process, the detection workers need to constantly flip the fruit to ensure that every surface image of the fruit is captured by the image. collected by the device, so that the device can correctly identify the quality of the fruit. However, it is necessary to arrange full-time workers to operate this, which increases the labor cost and also increases the labor intensity of the testing workers.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: how to provide a fruit turning mechanism that can reduce labor costs and labor intensity of workers.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A fruit turning mechanism, including a power device and a horizontally arranged rotor, the two ends of the rotor along the axial direction are respectively provided with rotor support frames for supporting the rotor and cooperating with it in rotation, and the turning body of the rotor is arranged at intervals along its circumference. A fruit hole that accommodates a single fruit. Each fruit hole is provided with at least one roller shaft that can rub against the fruit along the axis of the rotor. The two ends of the roller shaft are respectively connected to the rotor. When the roller shaft rotates, the The shaft can drive the fruit in the fruit hole to turn over. The power device includes a rotor driving device and a roller shaft driving device. The rotor driving device is connected to the rotor through the transmission system I, and the roller shaft driving device is connected to the roller shaft through the transmission system II. .

In the present invention, a single fruit is put into the fruit hole on the rotor one by one, the rotor driving device is controlled to make the rotor rotate to the detection position, and then the roller shaft driving device is controlled to make the roller shaft rotate in the fruit hole, and the roller shaft is rotating During the process, it can continue to rub against the fruit to provide friction for the turning of the fruit, and then the fruit is turned under the action of the friction. In this way, it is no longer necessary to have a special person to turn the fruit, which reduces the labor cost and the labor intensity of the workers.

As an optimization, the number of the roller shafts is an even number and is arranged symmetrically with the center line of the fruit hole, and there is formed between the roller shafts on both sides of the center line of the fruit hole that can accommodate the fruit and turn over the fruit. flipping space. The fruit enters the turning space in the fruit hole, so that the roller shafts on both sides of the fruit can act on the fruit at the same time, providing friction for the turning of the fruit from both sides of the fruit, so that the fruit can be better turned over and improved. improved fruit turnover efficiency.

As an optimization, the roller shaft is a drum-shaped structure with a large diameter at both ends and a small diameter in the middle. Fruits such as apples, citrus and pears are similar to the formation of a sphere, and its surface is a curved surface. The roller shaft adopts a drum-shaped structure with a large diameter at both ends and a small diameter in the middle. Fitting, increasing the friction area with the fruit, providing greater friction to turn the fruit over.

The invention also discloses a fruit grading device, which includes a support platform, a fruit grading detection mechanism located on the upper surface of the support platform, a fruit grading and packing mechanism, and a fruit single fruit feeding mechanism; the fruit grading detection mechanism includes a An overturning mechanism and a detection mechanism, the overturning mechanism is the above-mentioned fruit overturning mechanism, the detection mechanism includes a fruit image acquisition device that is located above the rotor and corresponding to the fruit hole and can detect the fruit in the fruit hole, and a supporting platform There is a mounting bracket fixedly connected with the fruit image acquisition device, the single fruit feeding device is located in front of the rotation direction of the rotor, the outlet end of the single fruit feeding device corresponds to the position of the fruit hole and can feed the fruit into the fruit hole, the fruit grading and packing mechanism is located at the rear of the rotor rotation direction, and the inlet end of the fruit grading and packing mechanism corresponds to the position of the fruit hole and can make the fruit falling out of the fruit hole The fruit enters its interior for grading and packaging.

In the present invention, the rotor driving device is controlled to rotate the rotor so that the fruit hole corresponds to the outlet end of the fruit single fruit feeding mechanism, so that the fruit can enter the fruit hole from the outlet end of the fruit single fruit feeding mechanism; and then continue to rotate The rotor makes the fruit hole with the fruit rotate under the fruit image acquisition device, and then controls the roller shaft driving device to make the roller shaft rotate in the fruit hole to turn over the fruit. The image is acquired. After the image of the fruit surface is acquired, the rotor is rotated again so that the hole containing the fruit corresponds to the inlet end of the fruit grading and packaging mechanism. The fruit falls out of the fruit hole and enters the fruit grading and packaging mechanism under the centrifugal force provided by the rotation of the rotor. Grading and packing in. In this way, from fruit loading, identification to final packaging, all are automatically completed, and manual participation is no longer required, which further reduces the cost of manpower and improves work efficiency.

As an optimization, the fruit grading and packaging mechanism includes a belt conveyor I, and the belt conveyor I includes two idler rollers I and a conveyor belt I wound on the two idler rollers I, and the conveyor belt I faces a direction away from the rotor For conveying, the support platform is also fixedly connected with the roller support column I that is respectively connected to the two ends of the two idler rollers I, and the support platform is also provided with an idler that can drive any idler I to rotate The driving device I, the support platform is located on both sides of the conveyor belt I, respectively provided with fruit blocking boards that can prevent the fruit from rolling out of the conveyor belt I, and the two fruit blocking boards are oppositely provided with spaced openings along the conveying direction of the conveyor belt I. The fruit outlet that allows the fruit to pass through is located in the middle of the feeding end of the conveyor belt I and above the conveyor belt I is provided with a fruit separation plate corresponding to the position of the fruit hole, and a fruit separation plate that can drive The fruit separating plate swings left and right to make the fruit pass through the left or right side of the fruit separating plate. The fruit separating plate is located at the rear of the fruit separating plate and the position corresponding to the fruit outlet is respectively equipped with a fruit guide plate. A fruit guiding plate driving device capable of driving the fruit guiding plate to swing left and right is provided so that the fruit rolls out from the fruit outlet on the adjacent side. The supporting platform is provided with a fruit separating plate driving device and a fruit guiding plate driving device respectively Guide fixed bracket for fixed connection.

According to the results of fruit detection by the previous fruit image acquisition device, the fruit is graded and boxed, so that the fruit is rolled out from different fruit outlets. The drive motor of the fruit separation plate drives the fruit separation plate to rotate towards one side, so that one end of the fruit separation plate rotates to the side of the fruit hole in the horizontal direction, then after the fruit comes out of the fruit hole, it enters into the fruit separation plate under the guidance of the fruit separation plate. On the conveyor belt on one side of the fruit board, it is conveyed by the conveyor belt. Rotate the corresponding fruit guide plate of the corresponding fruit outlet, so that one end of the fruit guide plate is rotated to the rear end of the fruit outlet, and the fruit guide plate forms an inclined slope relative to the conveying direction of the conveyor belt, and the fruit is conveyed on the belt. It will be blocked by the fruit guide plate and enter the corresponding fruit outlet under the guidance of the inclined surface to complete the fruit grading. If the fruit is rotten or has any defects, the fruit guide plate rotates to the middle of the conveyor belt without blocking the fruit, and finally the fruit falls out from the outlet end of the conveyor belt. In this way, manual sorting is no longer required, which not only improves work efficiency, but also reduces manual work intensity.

As an optimization, the fruit single fruit feeding mechanism includes a feeding device and a strip-shaped feeding platform inclined forward and backward. The lower end of the strip-shaped feeding platform is the outlet end and corresponds to the rotor. The strip-shaped feeding platform The width is the maximum width of a single fruit, and the feeding device includes feeding plates respectively located on the left and right sides of the strip-shaped feeding platform. Corresponding to the sides of the feed plate, the upper surface of the feed plate is spaced along the front and rear direction with multiple baffles arranged parallel to each other. One end of the baffle extends toward the direction of the strip-shaped feeding platform. A fruit rolling channel that allows a single fruit to pass through. The end of the fruit rolling channel facing the strip-shaped feeding platform corresponds to the upper surface of the strip-shaped feeding platform. The support platform is fixedly connected with a The supporting frame of the feeding platform and the supporting frame of the feeding plate supporting the feeding plate.

When in use, put the fruits into the fruit rolling channel on the feeding plate on both sides of the bar-shaped feeding platform, and only a single fruit can pass through the fruit rolling channel, which prevents multiple fruits from being blocked at the outlet of the fruit rolling channel. The fruit will roll onto the strip-shaped feeding platform under the action of gravity, and the fruit on the strip-shaped feeding platform will also roll to the lower end (outlet end) under the action of gravity. The width of the strip-shaped feeding platform is the maximum width of a single fruit, so that only a single fruit can be rolled on it. Therefore, the fruits entering the strip-shaped feeding platform can be arranged in rows one by one from the strip-shaped feeding platform. The exit end rolls out. Before the fruit rolls out from the strip-shaped feeding platform, there is a certain obstacle to the fruit in the fruit rolling channel on both sides of the strip-shaped feeding platform, and the fruit in the fruit rolling channel cannot enter the strip-shaped feeding platform temporarily. When there is no fruit on the strip feeding platform at the outlet of the fruit rolling passage, the fruit in the fruit rolling passage can enter the strip feeding platform. The fruits on the strip-shaped feeding platform are rolled out one by one, and the fruits in the fruit rolling channels on both sides will also enter the strip-shaped feeding platform one by one, which realizes the effective sorting of fruits and avoids the phenomenon of overlapping fruits, thereby improving work efficiency.

As an optimization, the strip-shaped feeding platform includes a belt conveyor II, and the belt conveyor II includes two idler rollers II and a conveyor belt II wound on the two idler rollers II, the two idler rollers II are set in height, and the conveyor belt The upper surface of II is the fruit conveying surface and is conveyed towards the direction of the rotor. The supporting frame of the feeding platform is an idler support column II that is fixedly connected to the support platform and is rotatably matched with two idler rollers II. The support platform is also provided with an idler driving device II capable of driving any idler II to rotate. When encountering some fruits that are not very round in shape, when they are hindered by the fruits in the fruit rolling channels on both sides on the strip feeding platform, they cannot continue to roll forward by gravity alone, and they will get stuck. The strip-shaped feeding platform is set as a belt conveying device, which always provides a conveying power, and conveys the fruits on it in a single arrangement, and the use effect is better.

As an optimization, the end of the retaining bar close to the strip-shaped feeding platform is inclined towards the outlet end of the strip-shaped feeding platform. In this way, the fruit rolling passage between two adjacent bars can also be inclined towards the outlet end (lower end) of the strip-shaped feeding platform, and the fruit at the exit of the fruit rolling passage can be inclined along the strip-shaped feeding platform. The force in the direction can well enter the strip-shaped feeding platform. If the outlet directions of the fruit rolling channels on both sides of the strip-shaped feeding platform are set oppositely, the fruits coming out of the two sides will easily get stuck.

As an optimization, the top of the bar is an arc top. No matter when the fruit is put into the fruit rolling passage or when the fruit is rolling in the fruit rolling passage, the arc-shaped top of the retaining bar can reduce the damage to the fruit surface.

To sum up, the beneficial effects of the present invention are: the present invention is simple in structure, easy to use and can realize the automatic turning over of fruits, realize automatic processing from fruit feeding, detection to final packaging, reduce labor cost, alleviate labor intensity of workers.

Description of drawings

In order to make the purpose of the invention, technical solutions and advantages clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic diagram of the three-dimensional internal structure of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, a kind of fruit turnover mechanism in this specific embodiment includes a power device and a rotor 1 arranged horizontally, and the two ends of the rotor 1 along the axial direction are respectively provided with a rotor support frame for supporting the rotor and cooperating with it in rotation, A plurality of fruit holes 2 capable of accommodating a single fruit are arranged at intervals along the circumference of the rotor 1, and each fruit hole 2 is provided with at least one roller shaft 3 that can rub against the fruit along the axis of the rotor 1. The two ends of the roller shaft 3 are respectively connected to the rotor 1 in rotation. When the roller shaft 3 rotates, the roller shaft 3 can drive the fruit in the fruit hole 2 to turn over. The power device includes a rotor drive device and a roller shaft drive device. The driving device is in transmission connection with the rotor 1 through the transmission system I, and the roller shaft driving device is in transmission connection with the roller shaft 3 through the transmission system II.

In this specific embodiment, the number of the rollers 3 is 4 and they are arranged symmetrically with the center line of the fruit hole 2, and there is formed between the rollers 3 on both sides of the center line of the fruit hole 2. A flipping space for accommodating and flipping the fruit.

In this specific embodiment, the roller shaft 3 is a drum-shaped structure with a large diameter at both ends and a small diameter in the middle.

A fruit grading device, comprising a support platform 4, a fruit grading detection mechanism located on the upper surface of the support platform 4, a fruit grading and packaging mechanism, and a fruit single fruit feeding mechanism; the fruit grading detection mechanism includes a turning mechanism arranged on the upper surface of the support platform 4 and a detection mechanism, the turning mechanism is the above-mentioned fruit turning mechanism, and the detection mechanism includes a fruit image acquisition device 5 that is located above the rotor 1 and corresponding to the fruit hole 2 and can detect the fruit in the fruit hole 2, The support platform 4 is provided with a mounting bracket 6 fixedly connected to the fruit image acquisition device 5, the single fruit feeding device is located in front of the rotation direction of the rotor 1, and the outlet end of the single fruit feeding device is in the same position as the fruit hole 2. Correspondingly and capable of feeding fruit into the fruit hole 2, the fruit grading and dispensing mechanism is located behind the rotation direction of the rotor 1, and the inlet port of the fruit grading and dispensing mechanism corresponds to the position of the fruit hole 2 and The fruit falling out from the fruit hole 2 can be entered into it for grading and packaging.

In this specific embodiment, the fruit grading and packaging mechanism includes a belt conveyor I, and the belt conveyor I includes two idler rollers I and a conveyor belt I7 wound on the two idler rollers I, and the conveyor belt I7 is directed away from the The direction of the rotor 1 is transported, and the support platform 4 is also fixedly connected with the roller support columns I that are respectively connected to the two ends of the two idler rollers I. The support platform 4 is also provided with a device that can drive any support Roller I rotates the idler drive device I, the support platform 4 is located on both sides of the conveyor belt I7, and is respectively provided with a fruit retaining board 8 that can prevent the fruit from rolling out of the conveying belt I7, and the two fruit retaining boards 8 are arranged opposite to each other. There are fruit outlets 9 set at intervals along the conveying direction of the conveying belt I7 to allow the fruit to pass through, located in the middle of the feeding end of the conveying belt I7 and above the conveying belt I7 to be provided with a fruit separation corresponding to the position of the fruit hole 2 Plate 10, the top of the fruit separating plate 10 is provided with a fruit separating plate driving device 11 that can drive the fruit separating plate 10 to swing left and right so that the fruit passes through the left or right side of the fruit separating plate 10, and is positioned at the rear of the fruit separating plate 10 and corresponds to The position of the fruit outlet 9 is respectively provided with a fruit guide plate 12, and the top of the fruit guide plate 12 is provided with a fruit guide plate that can drive the fruit guide plate 12 to swing left and right so that the fruit rolls out from the fruit outlet 9 on the adjacent side. device 13, the support platform 4 is provided with guiding and fixing brackets 14 fixedly connected with the fruit separating plate driving device 11 and the fruit guiding plate driving device 13 respectively.

In this specific embodiment, the single fruit feeding mechanism includes a feeding device and a strip-shaped feeding platform inclined forward and backward. The lower end of the strip-shaped feeding platform is the outlet end and corresponds to the rotor 1. The width of shape feed platform is the maximum width of single fruit, and feed device comprises the feed plate 15 that is respectively positioned at the left and right sides of strip shape feed platform, and feed plate 15 is inclined downward toward the side of strip shape feed platform and Corresponding to the side of the strip-shaped feeding platform, the upper surface of the feeding plate 15 is spaced along the front-to-back direction with a plurality of retaining bars 16 arranged parallel to each other, and one end of the retaining bar 16 extends toward the direction of the strip-shaped feeding platform. A fruit rolling channel that can allow a single fruit to pass is formed between adjacent two retaining bars 16. The end of the fruit rolling channel toward the strip-shaped feeding platform corresponds to the upper surface of the strip-shaped feeding platform. A feed platform support frame capable of supporting the bar-shaped feed platform and a feed plate support frame capable of supporting the feed plate are connected.

In this specific embodiment, the strip-shaped feeding platform includes a belt conveyor II, and the belt conveyor II includes two idler rollers II and a conveyor belt II17 wound on the two idler rollers II, and the height of the two idler rollers II is set , the upper surface of the conveying belt II 17 is the fruit conveying surface and conveys towards the direction of the rotor 1, and the supporting frame of the feeding platform is fixedly connected to the supporting platform 4 and is respectively rotatably matched with two supporting rollers II. Roller support column II, and the support platform 4 is also provided with an idler driving device II capable of driving any idler II to rotate.

In this specific embodiment, the end of the blocking bar 16 close to the strip-shaped feeding platform is inclined toward the outlet end of the strip-shaped feeding platform.

In this specific embodiment, the top of the retaining strip 16 is an arc-shaped top.

During the specific implementation process, the aperture diameter of the fruit hole 2 gradually decreases radially inward along the rotor 1, and the minimum diameter of the fruit hole 2 is larger than the minimum diameter of the detected fruit. The diameter of the orifice of the fruit hole is greater than the diameter at the bottom of the fruit hole, so that it is convenient for the fruit to enter the fruit hole. When the rotor 1 rotates to make the fruit hole 2 with the fruit rotate to the top, the fruit hole becomes vertically arranged, and the minimum diameter of the fruit hole is greater than the minimum diameter of the detected fruit, so that the fruit has enough space at the bottom of the hole. Flip Space to flip.

The inclination angle of the strip-shaped feeding platform can be set to 8-12°, which can not only provide rolling power for the fruit, but also prevent the fruit from rolling too fast and cause the subsequent process to fail. The fruit guiding plate 12 is arranged and distributed with some lightening holes, which can reduce the weight of the fruit guiding plate 12, reduce the load strength of the fruit guiding plate driving device 13, and improve its service life.

When using the fruit grading device, put the picked fruits into the fruit rolling channels on both sides of the strip-shaped feeding platform, and the fruits will roll onto the strip-shaped feeding platform one by one under the action of gravity; The material platform is transported toward the direction of the rotor, and the rotor is operated to rotate so that one of the fruit holes on the rotor corresponds to the outlet end of the strip-shaped feeding platform, so that the fruit enters the fruit hole; then rotate the rotor to make the fruit with the fruit The hole rotates to the bottom of the fruit image acquisition device and stops rotating, and then controls the roller shaft driving device to make the roller shaft rotate in the fruit hole, and the fruit is turned over, and the fruit image acquisition device acquires images of each surface of the fruit; After the detection is completed, the roller shaft stops rotating, and the rotor is restarted to rotate, and the fruit falls out of the fruit hole under the centrifugal force of the rotor rotation; if the fruit is in good quality under the detection of the fruit image acquisition device, the fruit leaves the rotor and enters the fruit hole. After the grading and packaging mechanism, respectively control the turning of the fruit separating board and the fruit guiding board, guide the fruit to be conveyed on the belt conveyor I, and fall into the corresponding fruit outlet according to the diameter of the fruit detected before; Under the detection of the image acquisition device, if the quality is poor such as rot, the fruit guide plate will not guide the fruit, but will be directly conveyed by the belt conveyor I and fall out from the end of the belt conveyor I.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described with reference to the preferred embodiments of the present invention, those skilled in the art should understand that it can be described in the form Various changes may be made in matter and details thereof without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (9)

1. A kind of fruit overturning mechanism, it is characterized in that: comprise power unit and horizontally arrange rotor, the two ends of rotor along the axial direction are respectively provided with the rotor support frame that is used to support rotor and cooperates with its rotation, the rotor turns around along its circumferential direction A plurality of fruit holes capable of accommodating a single fruit are arranged at intervals, and at least one roller shaft capable of rubbing against the fruit is arranged in each fruit hole along the axis of the rotor. When the roller shaft rotates, the roller shaft can drive the fruit in the fruit hole to turn over. The power device includes the rotor driving device and the roller shaft driving device. The rotor driving device is connected to the rotor through the transmission system I, and the roller shaft driving device passes through the transmission system Ⅱ is connected with the roller shaft drive. 2. A fruit turning mechanism according to claim 1, characterized in that: the number of the roller shafts is an even number and is arranged symmetrically with the center line of the fruit hole, and the rollers located on both sides of the center line of the fruit hole An overturning space capable of accommodating and overturning the fruit is formed between the roller shafts. 3 . The fruit turning mechanism according to claim 1 , wherein the roller shaft is in the shape of a drum with a large diameter at both ends and a small diameter in the middle. 4 . 4. A fruit grading device, characterized in that: it comprises a support platform and a fruit grading detection mechanism positioned on the upper surface of the support platform, a fruit grading and packaging mechanism and a fruit single fruit feeding mechanism; the fruit grading detection mechanism includes a The overturning mechanism and detection mechanism, the overturning mechanism is the fruit overturning mechanism in any one of the above claims 1 to 3, and the detection mechanism includes a fruit hole that is located above the rotor and set at a position corresponding to the fruit hole. The fruit image acquisition device for detecting fruits, the supporting platform is provided with a mounting bracket fixedly connected with the fruit image acquisition device, the single fruit feeding device is located in front of the rotor rotation direction, and the outlet end of the single fruit feeding device is connected to the The positions of the fruit holes are corresponding and the fruit can be fed into the fruit holes. The fruit grading and packaging mechanism is located behind the rotation direction of the rotor. Correspondingly, the fruit falling out from the fruit hole can be entered into the fruit hole for grading and packing. 5. The fruit grading device according to claim 4, characterized in that: the fruit grading and packaging mechanism includes a belt conveyor I, and the belt conveyor I includes two idler rollers I and a belt wound on the two idler rollers I. Conveyor belt I, the conveyer belt I is conveyed in a direction away from the rotor, and the support platform is also fixedly connected with idler support columns I that are rotationally connected with the two ends of the two idler rollers I, and on the support platform It is also provided with an idler driving device I capable of driving any idler I to rotate. The support platform is located on both sides of the conveyor belt I and is respectively provided with a fruit stopper that can prevent the fruit from rolling out of the conveyor belt I. Two stoppers The fruit plate is oppositely provided with the fruit outlets which are opened at intervals along the conveying direction of the conveyor belt I to allow the fruit to pass through, and is located in the middle of the feeding end of the conveyor belt I and above the conveyor belt I. The top of the fruit separating board is equipped with a driving device that can drive the fruit separating board to swing left and right so that the fruit can pass through the left or right side of the fruit separating board. It is located behind the fruit separating board and corresponds to the fruit outlet. The positions of the fruit guide plates are respectively provided with a fruit guide plate drive device that can drive the fruit guide plate to swing left and right so that the fruit rolls out from the fruit outlet on the adjacent side. There are guiding and fixing brackets fixedly connected with the driving device of the fruit separating board and the driving device of the fruit guiding board respectively. 6. The fruit grading device according to claim 4, characterized in that: the fruit single fruit feeding mechanism includes a feeding device and a strip-shaped feeding platform inclined forward and backward, and the lower end of the strip-shaped feeding platform is the outlet and corresponding to the rotor, the width of the strip-shaped feeding platform is the maximum width of a single fruit, and the feeding device includes feeding plates respectively located on the left and right sides of the strip-shaped feeding platform, and the feeding plate faces the strip-shaped feeding One side of the platform is inclined downwards and corresponds to the side of the strip-shaped feeding platform. The upper surface of the feeding plate is provided with a plurality of parallel bars arranged at intervals along the front and rear directions, and one end of the bar is facing the strip-shaped feeding Extending in the direction of the platform, a fruit rolling channel that allows a single fruit to pass is formed between two adjacent retaining bars. The end of the fruit rolling channel facing the strip-shaped feeding platform corresponds to the upper surface of the strip-shaped feeding platform. The platform is fixedly connected with a feeding platform supporting frame capable of supporting the strip-shaped feeding platform and a feeding plate supporting frame supporting the feeding plate. 7. The fruit grading device according to claim 6, characterized in that: the strip-shaped feeding platform includes a belt conveying device II, and the belt conveying device II includes two supporting rollers II and a belt wound on the two supporting rollers II. Conveyor belt II, two supporting rollers II are set up high and low, the upper surface of conveyor belt II is the fruit conveying surface and conveys towards the direction of the rotor, and the supporting frame of the feeding platform is fixedly connected to the supporting platform and is respectively connected to the Two idler rollers II are rotatably matched with an idler support column II, and an idler driving device II capable of driving any idler II to rotate is also arranged on the support platform. 8 . The fruit grading device according to claim 6 , wherein the end of the blocking bar close to the strip-shaped feeding platform is inclined toward the outlet end of the strip-shaped feeding platform. 9 . 9. The fruit grading device according to claim 6, characterized in that: the top of the retaining bar is an arc-shaped top.