Discontinuous incomplete-cutting double-moving-cutter cutter suitable for vegetable harvester

Abstract

The invention discloses a non-continuous incomplete-cutting double-moving-cutter cutter suitable for a vegetable harvester, which is characterized in that the non-continuous incomplete-cutting double-moving-cutter cutter suitable for the vegetable harvester comprises a rack, a cutter beam and a cutter protection mechanism, the two cutting knives are mounted on the knife beam; the driving assembly is used for driving the two cutting knives to do relative translational motion; the two cutting knives are moving knives capable of translating relative to the knife beam, and are respectively an upper moving knife and a lower moving knife; the driving assembly comprises a motor and double camshafts in driving connection with the motor; the phase difference between the first cam part and the second cam part is 180 degrees, and the two cam parts are connected with an upper moving cutter and a lower moving cutter through a first rocker and a second rocker respectively; the cutter protection mechanism comprises a plurality of blade protection plates, and a cutting inlet is formed between every two adjacent blade protection plates. According to the cutter, long stalk leaves can be prevented from being accidentally injured when the brassica campestris is harvested, and the cutting difficulty during concentrated harvesting can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vegetable harvesters, in particular to a discontinuous incomplete cutting double-movable blade cutter suitable for vegetable harvesters. Background Art

[0002] Automatic harvesters are equipment and tools that continuously cut and harvest crops during the agricultural production process. They can significantly reduce the labor consumption when harvesting crops, while speeding up the work efficiency and progress of crop harvesting, making it convenient for the rapid and efficient harvesting of crops.

[0003] Patent CN 217770869 U provides a typical cutter mechanism, which consists of a fixed cutter group and a movable cutter group. The movable cutter group is driven to reciprocate by an eccentric shaft mechanism, and can perform harvesting operations within a large width range. In order to protect the blade, a common practice in this field is to equip each blade with a knife guard. When this cutter mechanism is used on a harvester, for harvest objects such as Chinese cabbage, during the process of separating, cutting, and transporting them, due to the thick stems of the Chinese cabbage and the irregular distribution of the long petioles on them, it is difficult for the Chinese cabbage to enter the transport channel during harvesting, or it is in a skewed state when entering the transport channel, resulting in poor harvesting quality of the Chinese cabbage. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a discontinuous incomplete cutting double-blade cutter suitable for vegetable harvesters, which can prevent accidental damage to long-stalked leaves when harvesting vegetable moss and reduce the difficulty of cutting during concentrated harvesting.

[0005] Technical Solution: To achieve the above-mentioned object, the present invention provides a discontinuous and incomplete cutting double-moving blade cutter for a vegetable harvester, which comprises a frame, a blade beam, and a blade guard mechanism, and further comprises two cutting blades mounted on the blade beam and a drive assembly for driving the two cutting blades to move in relative translation.

[0006] The two cutting knives are movable knives capable of translation relative to the knife beam, namely an upper movable knife and a lower movable knife. The two movable knives have the same structure and each has a plurality of cutter heads arranged in a linear array. The drive assembly includes a motor and a dual camshaft connected to the motor. The dual camshaft has a first cam portion and a second cam portion with a phase difference of 180 degrees. The eccentricity and diameter of the two cam portions are equal. The two cam portions are connected to the upper movable knife and the lower movable knife respectively via a first rocker and a second rocker, so that the upper movable knife and the lower movable knife can move in opposite directions at the same speed.

[0007] The knife guard mechanism includes a plurality of blade guard plates, each of which covers at least a portion of the upper movable knife, and a cutting entrance is formed between two adjacent blade guard plates.

[0008] The above-mentioned cutter can adapt to both orderly harvesting of rows and unified harvesting. Specifically, when performing orderly harvesting of rows, each cutting entrance corresponds to a row of vegetables, and the lower ends of the stalks of vegetables in each row enter the corresponding cutting entrance respectively. The blade heads of the upper and lower movable knives located at the cutting entrances cut the vegetable stalks. Since the blade guard covers the blade heads of the upper movable knives between two adjacent rows, the long petioles and other leaves of the vegetables will not be cut by mistake. When performing unified harvesting operations, since the crops are densely planted, a straw divider is set in front of the cutter to gather the stalks of the crops into each cutting entrance for cutting. In this way, the number of cutting points is reduced. It is not a traditional wide-width cutting form. Fewer blade heads are involved in the cutting, which can avoid damaging too many long petioles and leaves.

[0009] Furthermore, the length specifications and the number of the blade guards can be changed, and the width of the cutting entry opening between the blade guards can be adjusted.

[0010] Furthermore, the length of the blade guard plate is equal to an integer multiple of the stroke of the upper movable knife, and the end contour of the blade guard plate is consistent with the edge contour of the upper cutter head of the upper movable knife.

[0011] Furthermore, the blade guard includes a V-shaped portion and a mounting plate portion connected to the lower edge of the V-shaped portion. The V-shaped portion encloses the corresponding cutter heads on the upper and lower movable blades, and a gap is formed between the inner wall of the V-shaped portion and the upper and lower movable blades. The mounting plate portion has a mounting hole, and the lower side of the blade beam has an elongated hole. A first screw passing through the mounting hole can be adjusted along the elongated hole and can fix the blade guard relative to the blade beam. In this way, the position of the blade guard can be easily adjusted, and the first screw can fix the blade guard to any position in the left-right direction.

[0012] Furthermore, the blade beam is T-shaped, comprising a vertical plate portion and a horizontal plate portion, with an elongated hole located on the lower side of the vertical plate portion. Guide screws are evenly spaced on the horizontal plate portion. The upper and lower movable blades each have waist-shaped holes, and the guide screws pass through the corresponding waist-shaped holes on the upper and lower movable blades. With this structure, the guide screws effectively guide the upper and lower movable blades, enabling them to move in translation.

[0013] Furthermore, the length of the waist-shaped hole is greater than the stroke of the upper movable knife and the lower movable knife.

[0014] Furthermore, a driving gear is fixed on the output shaft of the motor, and a transition gear meshing with the driving gear is fixed on the dual camshaft.

[0015] Furthermore, the drive assembly further includes an upper housing and a lower housing, and the dual camshaft, the first rocker arm, the second rocker arm, the drive gear and the transition gear are all placed between the upper housing and the lower housing.

[0016] Beneficial effects: The discontinuous and incomplete cutting double-moving knife cutter suitable for a vegetable harvester of the present invention has the following beneficial effects:

[0017] (1) In the cutter of the present invention, dual measures are taken to address the problem of accidental injury to the long handle when harvesting vegetables. First, the blade guard is used to cover a large area of the cutter heads on the upper and lower movable knives to reduce the number of cutter heads involved in cutting, which can effectively prevent accidental injury. On the other hand, in order to address the problem of increased cutting difficulty, a double movable knife structure is adopted, and a double camshaft is used to drive the two movable knives to move in opposite directions at the same speed. When cutting, the corresponding cutter heads on the upper and lower movable knives move from both sides to the middle for cutting. Compared with the traditional structure of a fixed knife and a movable knife, the cutting ability can be significantly improved to prevent operational failures caused by cutting failures.

[0018] (2) When harvesting in rows, the length and number of blade guards can be adjusted according to the row spacing, and the width of the cutting entrance can be adjusted according to the amount of cutting tasks. When there are many crops distributed within a unit distance, the amount of cutting tasks is large, so the cutting entrance is widened to allow more blades to participate in cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of a double-moving blade cutter for discontinuous and incomplete cutting suitable for vegetable harvesters;

[0020] Figure 2 This is a partial structural diagram of a double-moving blade cutter for discontinuous and incomplete cutting suitable for a vegetable harvester;

[0021] Figure 3 This is a top view of the structure of a double-moving blade cutter for discontinuous and incomplete cutting suitable for a vegetable harvester;

[0022] Figure 4 This is a three-dimensional structural diagram of a double-moving blade cutter for discontinuous and incomplete cutting suitable for a vegetable harvester;

[0023] Figure 5 This is a cross-sectional structural diagram of a double-moving blade cutter for discontinuous and incomplete cutting suitable for a vegetable harvester;

[0024] Figure 6 is a first cross-sectional structural diagram of the drive assembly;

[0025] Figure 7 is a second cross-sectional structural diagram of the drive assembly;

[0026] Figure 8 This is a diagram of the internal structure of the drive component.

[0027] In the figure: 1-frame; 2-knife beam; 2a-long hole; 2b-vertical plate; 2c-horizontal plate; 2d-guide screw; 3-drive assembly; 31-motor; 32-double camshaft; 32a-first cam portion; 32b-second cam portion; 33-drive gear; 34-transition gear; 35-upper shell; 36-lower shell; 4-upper movable knife; 5-lower movable knife; 6-first rocker; 7-second rocker; 8-blade guard; 8a-V-shaped portion; 8b-mounting plate; a-cutting entry port; 9-first screw; b-waist-shaped hole. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figures 1 to 5 The double-moving blade cutter for discontinuous and incomplete cutting suitable for a vegetable harvester shown in the figure comprises a frame 1, a blade beam 2, and a blade guard mechanism, and further comprises two cutting blades mounted on the blade beam 2 and a drive assembly 3 for driving the two cutting blades to move in relative translation.

[0030] The two cutting knives are movable knives that can translate relative to the knife beam 2, namely, an upper movable knife 4 and a lower movable knife 5. The two movable knives have the same structure, and the two movable knives respectively have multiple knife heads arranged in a linear array; Figures 6 to 8 As shown, the drive assembly 3 includes a motor 31 and a dual camshaft 32 drivingly connected to the motor 31; the dual camshaft 32 has a first cam portion 32a and a second cam portion 32b with a phase difference of 180 degrees. The eccentricity and diameter of the two cam portions are equal. The two cam portions are connected to the upper movable knife 4 and the lower movable knife 5 via a first rocker 6 and a second rocker 7, respectively, so that the upper movable knife 4 and the lower movable knife 5 can move in opposite directions at the same speed.

[0031] The knife guard mechanism includes a plurality of blade guard plates 8 , which at least cover a portion of the upper movable knife 4 , and a cutting entrance a is formed between two adjacent blade guard plates 8 .

[0032] The above-mentioned cutter can adapt to both orderly harvesting of rows and unified harvesting. Specifically, when performing orderly harvesting of rows, each cutting entrance corresponds to a row of vegetables, and the lower ends of the stalks of vegetables in each row enter the corresponding cutting entrance respectively. The blade heads of the upper and lower movable knives located at the cutting entrances cut the vegetable stalks. Since the blade guard 8 covers the blade head of the upper movable knife between two adjacent rows, the long petioles and other leaves of the vegetables will not be cut by mistake. When performing unified harvesting operations, since the crops are densely planted, a straw divider is set in front of the cutter to gather the stalks of the crops into each cutting entrance for cutting. In this way, the number of cutting points is reduced. It is not a traditional wide-width cutting form. Fewer blade heads are involved in the cutting, which can avoid damaging too many long petioles and leaves.

[0033] In the cutter of the present invention, dual measures are taken to address the problem of accidental injury to long handles when harvesting vegetables. First, the blade guard 8 is used to cover a large area of the cutter heads on the upper and lower movable knives to reduce the number of cutter heads involved in cutting, which can effectively prevent accidental injury. On the other hand, in order to address the problem of increased cutting difficulty, a double movable knife structure is adopted, and a double camshaft is used to drive the two movable knives to move in opposite directions at the same speed. When cutting, the corresponding cutter heads on the upper and lower movable knives move from both sides to the middle for cutting. Compared with the traditional structure of a fixed knife and a movable knife, it can significantly improve the cutting ability and prevent cutting failures from causing operational failures.

[0034] Preferably, the length and number of the blade guard plates 8 can be changed, and the width of the cutting entry opening between the blade guard plates 8 can be adjusted.

[0035] In this way, when harvesting rows, the length and number of the blade guards 8 can be adjusted according to the row spacing, and the width of the cutting entrance can be adjusted according to the amount of cutting tasks. When there are many crops distributed within a unit distance, the amount of cutting tasks is large, so the cutting entrance is widened to allow more blades to participate in cutting.

[0036] Preferably, the length of the blade guard 8 is equal to an integral multiple of the stroke of the upper movable knife 4, and the end profile of the blade guard 8 is consistent with the edge profile of the upper blade head of the upper movable knife 4. Figure 5 As shown, the blade guard 8 includes a V-shaped portion 8a and a mounting plate portion 8b connected to the lower edge of the V-shaped portion 8a. The V-shaped portion 8a encloses the corresponding cutting heads of the upper movable blade 4 and the lower movable blade 5, and there is a gap between the inner wall of the V-shaped portion 8a and the upper and lower movable blades. The mounting plate portion 8b has a mounting hole, and the lower side of the blade beam 2 has an elongated hole 2a. A first screw 9 passing through the mounting hole can be adjusted along the elongated hole 2a and can fix the blade guard 8 relative to the blade beam 2. In this way, the position of the blade guard 8 can be easily adjusted, and the first screw 9 can fix the blade guard 8 at any position in the left-right direction.

[0037] Preferably, the blade beam 2 is T-shaped, comprising a vertical plate portion 2b and a horizontal plate portion 2c. The elongated holes 2a are located below the vertical plate portion 2b. Guide screws 2d are mounted equidistantly on the horizontal plate portion 2c. The upper movable blade 4 and the lower movable blade 5 each have waist-shaped holes b, with the guide screws 2d passing through the corresponding waist-shaped holes on the upper and lower movable blades. This structure allows the guide screws 2d to effectively guide the upper and lower movable blades, enabling translational motion. The length of the waist-shaped holes is greater than the travel of the upper and lower movable blades 4 and 5.

[0038] Preferably, a drive gear 33 is fixed to the output shaft of the motor 31, and a transition gear 34 is fixed to the dual camshaft 32, meshing with the drive gear 33. The drive assembly 3 also includes a housing, comprising an upper housing 35 and a lower housing 36. The dual camshaft 32, the first rocker 6, the second rocker 7, the drive gear 33, and the transition gear 34 are all disposed between the upper housing 35 and the lower housing 36. The blade beam 2 and the frame 1 both have fixed connections to the housing.

[0039] 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 double-moving blade cutter for discontinuous and incomplete cutting of vegetable harvesters, comprising a frame, a blade beam, and a blade guard mechanism, two cutting blades mounted on the blade beam, and a drive assembly for driving the two cutting blades in relative translational motion; characterized in that: The two cutting knives are movable knives capable of translationally moving relative to the knife beam, namely, an upper movable knife and a lower movable knife; the driving assembly includes a motor and a dual camshaft drivingly connected to the motor; the dual camshaft has a first cam portion and a second cam portion with a phase difference of 180 degrees, and the two cam portions are connected to the upper movable knife and the lower movable knife respectively through a first rocker and a second rocker; The knife guard mechanism includes a plurality of blade guard plates, each of which covers at least a portion of the upper movable knife, and a cutting entrance is formed between two adjacent blade guard plates.

2. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 1, characterized in that: The length and number of the blade guards can be changed, and the width of the cutting entry opening between the blade guards can be adjusted.

3. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 1, characterized in that: The length of the blade guard plate is equal to an integral multiple of the stroke of the upper movable knife, and the end profile of the blade guard plate is consistent with the edge profile of the upper cutter head of the upper movable knife.

4. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 1, characterized in that: The blade guard plate includes a V-shaped portion and a mounting plate portion connected to the lower edge of the V-shaped portion. The mounting plate portion has a mounting hole, and the lower side of the knife beam has a long hole. The first screw passing through the mounting hole can adjust the position along the long hole and can fix the blade guard plate relative to the knife beam.

5. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 1, characterized in that: The knife beam is T-shaped, and has a vertical plate portion and a horizontal plate portion; the horizontal plate portion has guide screws installed at equal intervals; the upper movable knife and the lower movable knife respectively have waist-shaped holes, and the guide screws pass through the waist-shaped holes at corresponding positions on the upper and lower movable knives.

6. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 5, characterized in that: The length of the waist-shaped hole is greater than the stroke of the upper movable knife and the lower movable knife.

7. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 1, characterized in that: A driving gear is fixed on the output shaft of the motor, and a transition gear meshing with the driving gear is fixed on the dual camshaft.

8. The discontinuous incomplete cutting double-moving blade cutter suitable for a vegetable harvester according to claim 7, characterized in that: The driving assembly further includes an upper housing and a lower housing, and the dual camshaft, the first rocker arm, the second rocker arm, the driving gear and the transition gear are all placed between the upper housing and the lower housing.

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