Crop digging and conveying device

Abstract

The present invention discloses a crop digging and conveying device, comprising a machine base, on which is mounted an excavating mechanism and a conveying mechanism mounted behind the excavating mechanism; and a cylindrical roller positioned in front of the excavating mechanism, capable of acting on the stems and leaves of the crop, causing the crop in front of the excavating mechanism to tilt forward. In the crop digging and conveying device of the present invention, by providing the cylindrical roller to act on the stems and leaves of the crop, the stems and leaves of the crop acted upon by the cylindrical roller are continuously acted upon by the cylindrical roller from the time the excavating mechanism digs out the root until the conveying mechanism acts on the root. This maintains the crop's posture after digging, with the root facing backward and the stem facing forward, maintaining a neat posture and facilitating subsequent processing.

Description

Technical Field

[0001] The present invention relates to the technical field of crop digging and conveying devices, and in particular to a crop digging and conveying device. Background Art

[0002] In agriculture, during the harvesting process of some crops, it is necessary to dig out the crops with their roots and transport them backward for subsequent processing. In the prior art, CN211458025U discloses a typical excavation and conveying device, which includes an excavation device and a conveying device located at the rear of the excavation device. A limited depth wheel is provided in front of the excavation device to control the excavation depth. Although this excavation and conveying device can dig out the crops with their roots and transport them backward, it cannot control the posture of the crops after they are on the conveying device. For the convenience of subsequent processing, some crops need to be dug with the roots facing backward and the stems leading forward. It is difficult to effectively control the posture of the crops in the above-mentioned prior art. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a crop excavation and conveying device that can effectively control the posture of excavated crops.

[0004] Technical solution: To achieve the above-mentioned purpose, the crop digging and conveying device of the present invention includes a machine base, on which a digging mechanism and a conveying mechanism installed behind the digging mechanism are installed;

[0005] It also includes a cylindrical roller, which is placed in front of the digging mechanism and can act on the stems and leaves of crops to make the crops in front of the digging mechanism lean forward.

[0006] Furthermore, the front and rear positions of the cylindrical roller relative to the digging mechanism can be adjusted to accommodate crops of different heights, so that the distance between the cylindrical roller and the front end of the conveying mechanism is adapted to the overall statistical height of the crops. This ensures that after the roots of the crops are dug out and contact the front end of the conveying mechanism, the cylindrical roller still acts on the middle or upper middle position of the stem (determined based on the statistical height of the stem, such as 0.5-0.8 times the statistical height of the stem). With this setting, crops of different lengths can be used to ensure the regularity of the crops after digging. The overall statistical height here is based on the total length of the crops. The total length refers to the total length of the stem of the crop exposed above the soil and the length of the root buried under the soil. The above-mentioned stem statistical height and overall statistical height can be obtained by statistics based on a certain number of samples.

[0007] Furthermore, in one embodiment, the ground provides a supporting reaction force against the cylindrical roller. This allows the cylindrical roller to both tilt the crop forward and limit the digging depth of the digging mechanism. The cylindrical roller is adjustable in height relative to the base to adjust the digging depth.

[0008] Furthermore, in another solution, the ground has no supporting reaction force on the cylindrical roller, and the cylindrical roller can actively rotate relative to the machine base so that the lower edge of the cylindrical roller moves forward. In this way, the cylindrical roller can produce a forward friction effect on the stems and leaves of the crops passing below it, so as to keep the crops in a forward tilted state and straighten the stems of the crops, so as to further improve the neatness of the crop posture after the crops move to the conveying mechanism.

[0009] Furthermore, support wheels are mounted on each end of the cylindrical roller, each with a larger diameter than the cylindrical roller. This provides a supporting reaction force from the ground on the support wheels, eliminating the ground's supporting reaction force on the cylindrical roller. This allows the cylindrical roller to tilt the stems and leaves of the crop forward with appropriate force. Furthermore, the support wheels act as depth limiters, eliminating the problem of using cylindrical rollers directly to limit the depth of the crop during rolling. The support wheels are adjustable in height relative to the machine base.

[0010] Preferably, the cylindrical roller has an outwardly protruding rod portion, and multiple rod portions are dispersed on the outside of the cylindrical roller. Since the cylindrical roller actively rotates and the portion at its lower edge moves forward, the rod portion can intervene between the stems and leaves of the crops. As the cylindrical roller rotates, the entanglement between the stems and leaves is released, and the stems and leaves of the crops are straightened.

[0011] Furthermore, the excavating mechanism includes two symmetrically arranged excavating knives. When viewed from above, the blades of the two excavating knives are arranged in a V-shape, and the ends of the excavating knife blades close to the middle are positioned backward.

[0012] Furthermore, a plurality of parallel rods are fixed to the rear side of the digging blade. With this structure, the digging blade's blade edge is tilted, which can reduce the digging difficulty of the digging blade's forward movement and reduce driving resistance. The crop roots dug by the digging blade move backward along the rods to the front end of the conveying mechanism.

[0013] Furthermore, the number of the cylindrical rollers is also two, and the two cylindrical rollers are respectively placed in front of the two digging blades, and the two cylindrical rollers are also arranged in a V-shape in a top view. The above structure can reduce the impact of the digging blade's inclined blade on the cylindrical rollers.

[0014] Preferably, in this solution, the cylindrical rollers do not contact the ground, and support wheels are installed on both sides of each cylindrical roller.

[0015] Beneficial effects: The crop digging and conveying device of the present invention acts on the stem and leaf parts of the crops by setting a cylindrical roller. For the crops acted upon by the cylindrical roller, the stem and leaf parts are always acted upon by the cylindrical roller during the process from when the digging mechanism digs out the roots to when the conveying mechanism acts on the roots. In this way, the posture of the crops after being dug out can be maintained with the roots facing backward and the stems facing forward, and the posture is neat, which is convenient for subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side sectional view of the crop digging and conveying device of Example 1;

[0017] Figure 2 A bottom view of the crop digging and conveying device of Example 1;

[0018] Figure 3 It is a side sectional view of the crop digging and conveying device of Example 2;

[0019] Figure 4 A bottom view of the crop digging and conveying device of Example 2;

[0020] Figure 5 It is the structural diagram of the transmission box;

[0021] Figure 6 This is a structural diagram of a crop digging and conveying device in a preferred embodiment of the second embodiment;

[0022] Figure 7 This is a structural diagram of the crop digging and conveying device of Example 3.

[0023] In the figure: 1-excavation mechanism; 11-excavation blade; 12-rod; 2-conveying mechanism; 3-cylindrical roller; 31-rod; 4-support wheel; 5-transmission box; 51-speed increasing gear set; 52-reversing gear set; 10-machine base. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1-2 The crop digging and conveying device shown includes a machine base 10, on which is mounted an excavating mechanism 1 and a conveying mechanism 2 mounted behind the excavating mechanism 1; and further includes a cylindrical roller 3, which is placed in front of the excavating mechanism 1 and can act on the stems and leaves of crops to cause the crops in front of the excavating mechanism 1 to tilt forward.

[0027] For the crops acted upon by the cylindrical roller 3, during the process from the digging mechanism 1 digging out the roots to the conveying mechanism 2 acting on the roots, the stems and leaves are always acted upon by the cylindrical roller 3, so that the posture of the crops after being dug out can be kept with the roots facing backwards and the stems facing forwards, and the posture is neat, which is convenient for subsequent processing.

[0028] The front and rear positions of the cylindrical roller 3 relative to the digging mechanism 1 can be adjusted to accommodate crops of different heights, so that the distance between the cylindrical roller 3 and the front end of the conveying mechanism 2 is adapted to the overall statistical height of the crops. This ensures that after the roots of the crops are dug out and contact the front end of the conveying mechanism 2, the cylindrical roller 3 still acts on the middle or upper middle position of the stem (determined based on the statistical height of the stem, such as the position of the cylindrical roller 3 can be determined based on 0.5-0.8 times the statistical height of the stem). With this setting, crops of different lengths can be used to ensure the regularity of the crops after digging. The overall statistical height here is based on the total length of the crops. The total length refers to the total length of the stem of the crops exposed above the soil and the length of the roots buried under the soil. The above-mentioned stem statistical height and overall statistical height can be obtained by statistics based on a certain number of samples.

[0029] In this embodiment, the ground exerts a supporting reaction force on the cylindrical roller 3. Specifically, the cylindrical roller 3 supports the front end of the base 10 and moves with the base 10. This allows the cylindrical roller 3 to tilt the crop forward while also limiting the digging depth of the digging mechanism 1. The cylindrical roller 3 can be adjusted in height relative to the base 10 to control the digging depth.

[0030] Example 2

[0031] like Figure 3-4 The crop digging and conveying device shown includes a machine base 10, on which is mounted an excavating mechanism 1 and a conveying mechanism 2 mounted behind the excavating mechanism 1; and further includes a cylindrical roller 3, which is placed in front of the excavating mechanism 1 and can act on the stems and leaves of crops to cause the crops in front of the excavating mechanism 1 to tilt forward.

[0032] In this embodiment, the ground provides no supporting reaction force against the cylindrical roller 3. The cylindrical roller 3 is not in contact with the ground, with a gap between them. The cylindrical roller 3 can actively rotate relative to the base 10, causing the lower edge of the cylindrical roller 3 to move forward. This creates a forward friction effect on the stems and leaves of crops passing beneath it, thereby maintaining the crops' forward tilt and straightening their stems, further improving the crop's uniformity after it arrives on the conveyor mechanism 2.

[0033] Preferably, support wheels 4 are mounted at each end of the cylindrical roller 3, and the diameter of the support wheels 4 is larger than that of the cylindrical roller 3. This allows the ground to exert a supporting reaction force on the support wheels 4, eliminating the ground's supporting reaction force on the cylindrical roller 3. This also allows the cylindrical roller 3 to tilt the stems and leaves of the crop forward with appropriate force. In this case, the support wheels 4 support the front end of the base 10 and also act as a depth limiter. The support wheels 4 can be adjusted in height relative to the base 10. Adjusting the height of the support wheels 4 allows the digging depth of the excavation mechanism 1 to be adjusted, thus resolving the issue of directly using the cylindrical roller 3 to limit the depth of the crop rolling transition.

[0034] like Figure 4 In the embodiment shown, the power for the active rotation of the cylindrical roller 3 is provided by the support wheel 4. Since the support wheel 4 is in contact with the ground, the support wheel 4 will rotate when the machine base 10 moves forward. The support wheel 4 drives the cylindrical roller 3 to rotate through the transmission box 5. Figure 5 As shown, the transmission case 5 houses a speed-increasing gear set 51 and a reversing gear set 52. The speed-increasing gear set 51 comprises two pairs of meshing gears, while the reversing gear set 52 comprises a coaxially mounted input bevel gear and an output bevel gear. Both the input bevel gear and the output bevel gear mesh with an intermediate bevel gear, with the gear axis of the intermediate bevel gear perpendicular to the gear axis of the input bevel gear. This structure allows the rotation speed of the cylindrical roller 3 to be higher than that of the support wheel 4, and the rotation direction of the cylindrical roller 3 is opposite to that of the support wheel 4, thus meeting the operational requirements of the cylindrical roller 3.

[0035] Preferably, if Figure 6 As shown, the cylindrical roller 3 has an outwardly convex rod portion 31, with multiple rod portions 31 dispersed around the outside of the roller 3. As the roller 3 actively rotates and its lower edge moves forward, the rod portions 31 can interpose themselves between the stems and leaves of the crop. As the roller 3 rotates, the rod portions 31 untangle the stems and leaves, straightening them. This resolves the problem of difficulty achieving the desired harvesting position due to inconsistencies between the crop's falling direction and the machine's movement. The rod portions 31 are made of a flexible material, such as rubber, to prevent significant damage to the crop stems.

[0036] Example 3

[0037] like Figure 7 The crop digging and conveying device shown includes a machine base 10, on which is mounted an excavating mechanism 1 and a conveying mechanism 2 mounted behind the excavating mechanism 1; and further includes a cylindrical roller 3, which is placed in front of the excavating mechanism 1 and can act on the stems and leaves of crops to cause the crops in front of the excavating mechanism 1 to tilt forward.

[0038] The excavation mechanism 1 comprises two symmetrically arranged excavating blades 11. When viewed from above, the blades 11 form a V-shaped blade edge arrangement, with the center end of each blade edge positioned rearward. A plurality of parallel rods 12 are secured to the rear of the excavating blades 11. This structure, with the blade edges positioned at an angle, reduces the forward movement of the excavating blades 11 and reduces driving resistance. The crop roots excavated by the excavating blades 11 travel backward along the rods 12 to the front end of the conveyor mechanism 2.

[0039] There are also two cylindrical rollers 3, each positioned in front of the two digging blades 11. The two cylindrical rollers 3 are also arranged in a V-shape when viewed from above. This structure reduces the effect of the digging blades 11's slanted edges on the action of the cylindrical rollers 3 on the crop.

[0040] In this embodiment, the cylindrical roller 3 is also not in contact with the ground, and support wheels 4 are installed on both sides of each cylindrical roller 3, wherein only one support wheel 4 can be set between two cylindrical rollers 3. Consistent with the second embodiment, the diameter of the support wheel 4 is larger than the diameter of the cylindrical roller 3, and the support wheel 4 can adjust its position in the height direction relative to the machine base 10, and the cylindrical roller 3 can adjust its position in the front-back direction and the height direction relative to the machine base 10. In this embodiment, the cylindrical roller 3 is also driven to operate by the support wheel 4, and a transmission box 5 is provided between the cylindrical roller 3 and the support wheel 4. The cylindrical roller 3 is connected to the input shaft of the transmission box 5, and the output shaft of the transmission box 5 is connected to the cylindrical roller 3 through a universal joint. The structure of the transmission box 5 is consistent with the structure of the transmission box 5 in Example 2 and will not be repeated.

[0041] In this embodiment, the cylindrical roller 3 may also be provided with an outwardly protruding rod portion 31, and multiple rod portions 31 are dispersed on the outside of the cylindrical roller 3. The rod portions 31 are made of a flexible material such as rubber to prevent damage to the stems of crops.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A crop digging and conveying device, comprising a machine base (10), a digging mechanism (1) mounted on the machine base (10), and a conveying mechanism (2) mounted behind the digging mechanism (1); characterized in that: It also includes a cylindrical roller (3), which is placed in front of the excavating mechanism (1), and the cylindrical roller (3) can actively rotate relative to the machine base (10) so that the lower edge of the cylindrical roller (3) moves forward; A support wheel (4) is installed at each end of the cylindrical roller (3), and the diameter of the support wheel (4) is larger than the diameter of the cylindrical roller (3); the ground has a supporting reaction force on the support wheel (4); the support wheel (4) drives the cylindrical roller (3) to rotate through the transmission box (5), so that the rotation speed of the cylindrical roller (3) is higher than the rotation speed of the support wheel (4), and the rotation direction of the cylindrical roller (3) is opposite to the rotation direction of the support wheel (4); The cylindrical roller (3) has an outwardly convex rod portion (31), and a plurality of rod portions (31) are dispersed on the outside of the cylindrical roller (3), and the rod portions (31) are made of a flexible material; as the cylindrical roller (3) rotates, the rod portions (31) can intervene between the stems and leaves of the crops, straightening the stems and leaves of the crops so that the direction of crop lodging is consistent with the direction of movement of the machine; The excavation mechanism (1) comprises two symmetrically arranged excavating knives (11), wherein the blades of the two excavating knives (11) are arranged in a V-shape in a top view, and the blades of the excavating knives (11) are positioned at the rear at one end close to the middle; The number of the cylindrical rollers (3) is also two, and the two cylindrical rollers (3) are respectively placed in front of the two digging knives (11), and the two cylindrical rollers (3) are also arranged in a V-shape in the top view direction; The position of the cylindrical roller (3) is determined based on 0.5 to 0.8 times the statistical height of the crop stem, so that after the crop root is dug out and contacts the front end of the conveying mechanism (2), the cylindrical roller (3) still acts on the middle or upper middle position of the crop stem.

2. The crop digging and conveying device according to claim 1, characterized in that: The front and rear positions of the cylindrical roller (3) relative to the excavating mechanism (1) can be adjusted.

3. The crop digging and conveying device according to claim 1, characterized in that: The cylindrical roller (3) can be adjusted in height relative to the machine base (10).

4. The crop digging and conveying device according to claim 1, characterized in that: The support wheel (4) can be adjusted in height relative to the machine base (10).

5. The crop digging and conveying device according to claim 1, characterized in that: A plurality of rods (12) arranged in parallel are fixed to the rear side of the digging knife (11).

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