Potato harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a potato harvester. The utility model provides a potato harvester capable of screening potatoes in a classified mode. The potato harvester comprises a main body frame, a twill wheel, a shell, a connecting shaft, an electric conveying belt and the like. The four corners of the bottom of the body frame are rotationally connected with the twill wheels, the two sides of the body frame are connected with the shells, the three connecting shafts are rotationally connected into the body frame, the three connecting shafts are jointly connected with the electric conveying belt, and the electric conveying belt is rotationally connected with the connecting shafts. According to the utility model, through the plurality of threaded rollers with different specifications, potatoes can fall into the different threaded rollers according to the sizes of the potatoes and are pushed into corresponding areas of the fillet frames on the two sides by threads in the threaded rollers, and larger potatoes can be conveyed into the collecting frame; the effect that the potato harvester can screen the potatoes in a classified mode is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a potato harvester. Background Art

[0002] The best time to harvest potatoes is after the plants turn yellow, which indicates that the underground tubers have fully developed and matured. However, it is also necessary to avoid waiting until the tubers sprout or the aboveground parts completely wither before harvesting, so as not to affect the taste and quality of the potatoes. The potato harvester is an agricultural machinery equipment used for automated potato harvesting. Its appearance has greatly improved the efficiency of potato cultivation and the income of potato farmers.

[0003] In the patent with publication number CN107864737A, a potato harvester is disclosed, which is characterized in that it includes a frame, a bucket part, an elevating part, a driving part and a shaking part are provided on the frame, the bucket part is fixed at the front end of the frame, and is used to shovel potatoes in the field ridges, and the rear end of the bucket part contacts the elevating part; the elevating part includes a driven sprocket installed at the front end of the frame and a driving sprocket installed at the rear end of the frame, the driven sprocket and the driving sprocket are connected through an elevating chain, and the elevating part is used to transport potatoes shoveled from the bucket part; the shaking part includes an eccentric wheel installed in the middle of the frame, the eccentric wheel is located between the driving sprocket and the driven sprocket, the eccentric wheel is provided with gear teeth, and the eccentric wheel contacts and supports the elevating chain through the gear teeth. During the use of this scheme, the potato harvester can only separate soil and potatoes, but does not have the function of grading and screening potatoes.

[0004] Therefore, we need to develop a potato harvester that can grade and screen potatoes. Utility Model Content

[0005] In order to overcome the shortcoming that the existing potato harvester cannot screen potatoes, the utility model provides a potato harvester which can screen potatoes in grades.

[0006] The technical scheme of the utility model is as follows: a potato harvester comprises a main body frame, a twill wheel, a shell, a connecting shaft, an electric conveyor belt, a connecting frame, a rounded corner frame, a threaded roller, a collecting frame, a small motor, a contact wheel, a long pulley assembly, a short pulley assembly, a shovel plate, a connecting rod and a limit plate. The four corners of the bottom of the main body frame are rotatably connected with the twill wheel, both sides of the main body frame are connected with the shell, three connecting shafts are rotatably connected inside the main body frame, the three connecting shafts are commonly connected with the electric conveyor belt, the electric conveyor belt is rotatably connected with the connecting shaft, both sides of the rear of the main body frame are connected with the connecting frame, and the connecting frame is connected with the rounded corners. Frame, three threaded rollers are rotatably connected between the two connecting frames, the rounded corner frame is connected to the threaded rollers, the threaded rollers are evenly provided with multiple round holes, a collecting frame is connected to the rear side of the main frame, a small motor is installed at the bottom of the main frame, three contact wheels are rotatably connected between the two connecting frames, the three contact wheels are respectively located under the three threaded rollers, a long pulley assembly is connected between adjacent contact wheels, a short pulley assembly is connected between the output shaft of the small motor and the front contact wheel, limit plates are connected to both sides of the front of the main frame, the limit plates are slidably connected to connecting rods, and a shovel plate is commonly connected to the bottom of the two connecting rods.

[0007] As an improvement of the above solution, a plurality of notches are provided on the front side of the shovel plate.

[0008] As an improvement of the above solution, the circular holes of the three threaded rollers have different diameters, the circular hole diameter of the front threaded roller is smaller, the circular hole diameter of the middle threaded roller is moderate, and the circular hole diameter of the rear threaded roller is larger.

[0009] As an improvement of the above solution, two partitions are provided inside the rounded corner frame, and the two partitions divide the rounded corner frame into three areas, and the three areas correspond to the three threaded rollers respectively.

[0010] As an improvement of the above scheme, it also includes a cylinder. Two cylinders are installed at the front of the main frame, and the output ends of the cylinders are connected to the connecting rod.

[0011] As an improvement of the above scheme, it also includes a large motor, a rear cam and a front cam. Two large motors are installed on both sides of the front of the main frame. The output shaft of the front large motor is connected to the front cam, and the output shaft of the rear large motor is connected to the rear cam.

[0012] Compared with the prior art, the utility model has the following advantages: 1. The utility model uses a plurality of threaded rollers of different specifications. According to the size of the potatoes, the potatoes will fall into different threaded rollers and be pushed into the corresponding areas of the rounded corner frames on both sides by the threads inside the threaded rollers, while the larger potatoes will be transferred to the collection frame, thereby achieving the effect that the potato harvester can grade and screen the potatoes.

[0013] 2. The utility model starts the large motor to drive the front cam and the rear cam to rotate. The front cam and the rear cam can cause the electric conveyor belt to vibrate slightly, so that most of the soil falls through the gaps in the electric conveyor belt, achieving the effect that the potato harvester can separate excess soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the main frame, bevel wheel, shell and other components of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the utility model's connecting shaft, electric conveyor belt, connecting frame and other components.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the threaded roller, small motor, contact wheel and other components of the utility model.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the utility model including the connecting frame, the rounded corner frame, the threaded roller and other components.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the shovel plate, limit plate, cylinder and other components of the utility model.

[0020] Figure 7 It is a three-dimensional structural schematic diagram of the large motor, rear cam, front cam and other components of the utility model.

[0021] The numbers in the figure are as follows: 1. main frame, 2. twill wheel, 3. outer shell, 4. connecting shaft, 5. electric conveyor belt, 6. connecting frame, 7. rounded corner frame, 8. threaded roller, 9. collecting frame, 10. small motor, 11. contact wheel, 12. long pulley assembly, 13. short pulley assembly, 14. shovel plate, 1401, connecting rod, 15. limit plate, 16. cylinder, 17. large motor, 18. rear cam, 19. front cam. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] A potato harvester, such as Figure 1-Figure 6As shown, it includes a main frame 1, a twill wheel 2, a shell 3, a connecting shaft 4, an electric conveyor belt 5, a connecting frame 6, a rounded frame 7, a threaded roller 8, a collecting frame 9, a small motor 10, a contact wheel 11, a long pulley assembly 12, a short pulley assembly 13, a shovel plate 14, a connecting rod 1401, a limit plate 15 and a cylinder 16. The four corners of the bottom of the main frame 1 are rotatably connected to the twill wheel 2. The twill wheel 2 can facilitate the operator to push the device. The twill design can increase the friction between the twill wheel 2 and the ground. The shell 3 is connected to both sides of the main frame 1. The shell 3 is used to protect the device. The main frame 1 is rotatably connected to Three connecting shafts 4 are connected to an electric conveyor belt 5, which is rotatably connected to the connecting shafts 4. A plurality of small protrusions are evenly distributed on the electric conveyor belt 5. The small protrusions of the electric conveyor belt 5 can support potatoes to prevent them from slipping. Both sides of the rear of the main frame 1 are connected to connecting frames 6, which are connected to rounded corner frames 7. Three threaded rollers 8 are rotatably connected between the two connecting frames 6. The threaded rollers 8 are provided with symmetrically distributed threads, which are used to convey potatoes. The rounded corner frame 7 is connected to the threaded roller 8, and two partitions are provided inside the rounded corner frame 7. The two partitions divide the rounded corner frame 7 into three areas. The three areas correspond to three threaded rollers 8 respectively. The threaded rollers 8 are evenly provided with a plurality of round holes. The round hole diameters of the three threaded rollers 8 are different. The round hole diameter of the front threaded roller 8 is smaller, the round hole diameter of the middle threaded roller 8 is moderate, and the round hole diameter of the rear threaded roller 8 is larger. Potatoes can fall into the threaded roller 8 through the round holes of the threaded roller 8. A collecting frame 9 is connected to the rear side of the main frame 1. A small motor 10 is installed at the bottom of the main frame 1. Three contact wheels 11 are rotatably connected between the two connecting frames 6. The three contact wheels 11 are respectively located below the three threaded rollers 8, and the contact wheels 11 are in contact with the threaded rollers 8. The rotation of the contact wheel 11 can drive the threaded roller 8 to rotate. A long pulley assembly 12 is connected between adjacent contact wheels 11. A short pulley assembly 13 is connected between the output shaft of the small motor 10 and the front contact wheel 11. Limiting plates 15 are connected to both sides of the front of the main frame 1. The limiting plates 15 are slidably connected to the connecting rod 1401. The bottoms of the two connecting rods 1401 are commonly connected to a shovel plate 14. A plurality of notches are provided on the front side of the shovel plate 14. The notches of the shovel plate 14 can facilitate the advancement of the shovel plate 14 in the soil. Two cylinders 16 are installed at the front of the main frame 1, and the output ends of the cylinders 16 are connected to the connecting rod 1401.

[0025] When using the device to collect potatoes, the device is pushed forward, and the twill wheel 2 can make the device be easily pushed. The starting cylinder 16 drives the connecting rod 1401 to move downward along the limit plate 15, and the connecting rod 1401 drives the shovel plate 14 to move downward into the soil. At this time, the potatoes can be moved to the electric conveyor belt 5 through the shovel plate 14, and the electric conveyor belt 5 is started. The electric conveyor belt 5 can convey the potatoes to the rear of the device, and the small motor 10 is started to drive the short pulley assembly 13 to rotate, thereby driving the front contact wheel 11 to rotate, and the front contact wheel 11 can drive the long pulley assembly 12 to rotate, thereby driving the other two contact wheels 11 to rotate, and the contact wheel 11 can drive the threaded roller 8 to rotate. At this time, the potatoes can be conveyed backward by the threaded roller 8. Since the potatoes are of different sizes, during the conveying process of the potatoes, according to the size of the potatoes, the potatoes will fall into different threaded rollers 8 and be pushed to the corresponding areas of the rounded corner frames 7 on both sides by the threads inside the threaded roller 8, while the larger potatoes will be conveyed to the collection frame 9.

[0026] Example 2

[0027] On the basis of Example 1, Figure 6 and Figure 7 As shown, it also includes a large motor 17, a rear cam 18 and a front cam 19. Two large motors 17 are installed on both sides of the front of the main frame 1. The output shaft of the front large motor 17 is connected to the front cam 19, and the output shaft of the rear large motor 17 is connected to the rear cam 18. The front cam 19 is provided with four corners, and the rear cam 18 is provided with three corners. Therefore, the front cam 19 and the rear cam 18 can touch the electric conveyor belt 5 at different frequencies, thereby accelerating the vibration frequency of the electric conveyor belt 5.

[0028] Since potatoes will carry some soil with them during the process of harvesting potatoes, in order to separate the soil out of the device, the large motor 17 is started to drive the front cam 19 and the rear cam 18 to rotate. The front cam 19 and the rear cam 18 can cause the electric conveyor belt 5 to vibrate slightly, so that most of the soil falls through the gaps in the electric conveyor belt 5.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A potato harvester, characterized in that: The invention comprises a main frame (1), a twill wheel (2), a shell (3), a connecting shaft (4), an electric conveyor belt (5), a connecting frame (6), a rounded frame (7), a threaded roller (8), a collecting frame (9), a small motor (10), a contact wheel (11), a long pulley assembly (12), a short pulley assembly (13), a shovel plate (14), a connecting rod (1401) and a limit plate (15). The four corners of the bottom of the main frame (1) are rotatably connected to the twill wheel (2). Both sides of the main frame (1) are connected to the shell (3). Three connecting shafts (4) are rotatably connected inside the main frame (1). The three connecting shafts (4) are commonly connected to the electric conveyor belt (5). The electric conveyor belt (5) is rotatably connected to the connecting shaft (4). Both sides of the rear of the main frame (1) are connected to the connecting frame (6). The connecting frame (6) is connected to the rounded frame (7). Three threaded rollers (8) are rotatably connected between the connection frames (6), the rounded frame (7) is connected to the threaded roller (8), and the threaded roller (8) is evenly provided with a plurality of circular holes. A collecting frame (9) is connected to the rear side of the main frame (1), and a small motor (10) is installed at the bottom of the main frame (1). Three contact wheels (11) are rotatably connected between the two connection frames (6), and the three contact wheels (11) are respectively located below the three threaded rollers (8). A long pulley assembly (12) is connected between adjacent contact wheels (11), and a short pulley assembly (13) is connected between the output shaft of the small motor (10) and the front contact wheel (11). Limiting plates (15) are connected to both sides of the front of the main frame (1), and the limiting plates (15) are slidably connected to connecting rods (1401). The bottoms of the two connecting rods (1401) are commonly connected to a shovel plate (14).

2. A potato harvester as claimed in claim 1, characterized in that: A plurality of notches are formed on the front side of the shovel plate (14).

3. A potato harvester as claimed in claim 2, characterized in that: The circular holes of the three threaded rollers (8) have different diameters. The circular hole diameter of the front threaded roller (8) is smaller, the circular hole diameter of the middle threaded roller (8) is moderate, and the circular hole diameter of the rear threaded roller (8) is larger.

4. A potato harvester as claimed in claim 3, characterized in that: Two partitions are arranged inside the rounded corner frame (7), and the two partitions divide the rounded corner frame (7) into three areas, and the three areas correspond to the three threaded rollers (8) respectively.

5. A potato harvester as claimed in claim 4, characterized in that: It also includes a cylinder (16). Two cylinders (16) are installed at the front of the main frame (1), and the output ends of the cylinders (16) are connected to the connecting rod (1401).

6. A potato harvester as claimed in claim 5, characterized in that: It also includes a large motor (17), a rear cam (18) and a front cam (19). The front and rear large motors (17) are installed on both sides of the front of the main frame (1). The output shaft of the front large motor (17) is connected to the front cam (19), and the output shaft of the rear large motor (17) is connected to the rear cam (18).

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