A fresh leaf tea harvester

Abstract

A fresh tea leaf harvester includes a receiving box, a mounting frame, a reciprocating cutter assembly, a movable cutter, a cutting force adjustment assembly, and a pull-blade assembly. The mounting frame is disposed inside the receiving box. The reciprocating cutter assembly is movably mounted on the mounting frame. The movable cutter is movably mounted on the mounting frame and its cutting portion is serrated with that of the reciprocating cutter assembly. The cutting force adjustment assembly is movably mounted on the mounting frame, with its actuators distributed on both sides of the movable cutter's mounting portion. The actuators of the cutting force adjustment assembly cooperate with the movable cutter to adjust the maximum cutting force. The pull-blade assembly is disposed on the mounting frame and distributed on both sides of the movable cutter's mounting portion. The pull-blade assembly includes a displacement amplification assembly, a return spring, a magnet, and a magnetic shielding assembly. By setting the cutting force adjustment assembly, the maximum cutting force of the harvester can be adjusted. By using the pull-blade assembly, the serrated cutter and the movable cutter prevent further cutting force from being applied to the tea stems, thereby ensuring that the harvester does not cause continuous damage to the tea stems.

Description

Technical Field

[0001] This invention relates to the field of tea leaf harvesting technology, specifically a fresh tea leaf harvester. Background Technology

[0002] Bulk tea refers to tea varieties that are produced in large quantities, traded frequently, and are representative of the tea market. These teas typically have high economic value and a significant impact on the tea market. Bulk tea varieties include green tea, black tea, Pu-erh tea, and oolong tea, which dominate tea production and trade. Bulk tea is characterized by stable quality and reasonable prices, meeting the needs of a wide range of consumers. Because the required quality for bulk tea is not very high, it is generally harvested using reciprocating cutters. Existing reciprocating cutters include double-acting blade reciprocating cutters, single-acting blade reciprocating cutters, flat reciprocating cutters, and arc-shaped reciprocating cutters. Currently, regardless of the type of reciprocating cutter, it can only achieve a single cut, cutting off both old leaves and tender buds, increasing the workload of sorting old leaves and tender buds later. This paper proposes a selective tea leaf cutter to address these issues.

[0003] The publication number CN201110271156.X discloses a tea-picking machine, including a cutter with two blades arranged opposite each other on the cutter. The characteristic is that one blade is a fixed blade and is serrated, while the other blade is a movable blade composed of independent triangular cutting edges. The triangular cutting edges are movably arranged on the blade holder and can be displaced in different amounts according to the magnitude of the resistance.

[0004] Although the existing technology can adjust the cutting force by setting an adjustment spring, the compression of the spring increases as the blade moves, which in turn increases the reaction force on the tea stem, thus damaging the tea stem. This makes it necessary to separate old leaves and tender buds during cutting. Summary of the Invention

[0005] The purpose of this invention is to provide a fresh tea leaf harvester to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fresh tea leaf harvester includes a receiving box, a mounting frame, a reciprocating cutter assembly, a movable cutter, a cutting force adjustment assembly, and a pull-blade assembly. The mounting frame is disposed inside the receiving box. The reciprocating cutter assembly is movably mounted on the mounting frame. The movable cutter is movably mounted on the mounting frame and is serrated with the cutting section of the reciprocating cutter assembly.

[0008] The cutting force adjustment component is movably mounted on the mounting bracket, and its actuating ends are distributed on both sides of the mounting portion of the movable cutter. The actuating ends of the cutting force adjustment component cooperate with the movable cutter to adjust the maximum cutting force.

[0009] The broach assembly is mounted on the mounting bracket and distributed on both sides of the mounting portion of the movable cutter;

[0010] The cutter assembly includes a displacement amplification component, a return spring, a magnet, and a magnetic shielding component. The actuating end of the displacement amplification component is located on the side of the movable cutter mounting part, and the displacement amplification component can achieve linear motion. Its actuating end is connected to the mounting frame through the return spring. The two magnets are arranged opposite each other with opposite magnetic poles. One magnet is located on the side of the movable cutter mounting part, and the other is located on the mounting frame. The magnetic shielding component is movably mounted on the mounting frame. The actuating end of the magnetic shielding component cooperates with the actuating end of the displacement amplification component, and the magnetic shielding part of the magnetic shielding component cooperates with the magnet located on the mounting frame.

[0011] Preferably, the cutting force adjustment assembly includes a movable plate, a spring, a connecting plate, and a tightening bolt. The movable plate is movably fitted in a guide groove provided in the mounting frame. The two sides of the movable cutter are respectively connected to the movable plate by springs. The two connecting plates are movably mounted on the mounting frame. The movable plate located on the same side of the mounting part of the movable cutter is fixedly connected to one of the connecting plates. The tightening bolt is rotatably mounted on the mounting frame and is threadedly engaged with the side of the connecting plate.

[0012] Preferably, the displacement amplification assembly includes a hollow sleeve, a piston rod, and a telescopic rod. The hollow sleeve has different inner diameters at its two ends, and piston rods are movably fitted inside both ends of the hollow sleeve. The space between the two piston rods is filled with a medium. A telescopic rod is provided inside the piston rod at the end with the larger inner diameter of the hollow sleeve. The telescopic rod is connected to the side of the mounting part of the movable cutter. The piston rod at the end with the smaller inner diameter of the hollow sleeve is connected to a return spring.

[0013] Preferably, the magnetic shielding assembly includes a magnetic shielding plate and a reversing assembly. The magnetic shielding plate is movably fitted on the mounting frame and faces the magnet provided on the mounting frame at its magnetic shielding end. The actuating end of the magnetic shielding plate is fitted inside the actuating end of the reversing assembly.

[0014] Preferably, the reversing assembly includes a rotating sleeve, a reversing guide groove, and a blocking part. The rotating sleeve is rotatably mounted on the side of the piston rod located at the end with the larger inner diameter of the hollow sleeve. The rotating sleeve has a reversing guide groove, and the actuating end of the magnetic shielding plate is fitted inside the reversing guide groove. A blocking part is provided at the reversing point in the reversing guide groove to limit the rotation direction of the rotating sleeve.

[0015] Preferably, the reciprocating cutter assembly includes a serrated cutter, an eccentric wheel, a connecting rod, and a motor. The serrated cutter is movably fitted on the mounting frame and engages with the eccentric wheel at its end via the connecting rod. The eccentric wheel is rotatably mounted on the mounting frame and powered by the motor.

[0016] Preferably, a limiting block is provided inside the end of the hollow sleeve with the smaller inner diameter.

[0017] Preferably, the variable guide groove is a spiral groove, with the top lower than the bottom. The variable guide groove has a descending arc groove on the left side and an ascending arc groove on the right side, and both arc grooves have a baffle part.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The present invention discloses a fresh tea leaf harvester. During operation, the maximum cutting force of the harvester can be adjusted by setting a cutting force adjustment component, so that the harvester can only cut the tea leaves without cutting the tea stems, thus avoiding damage to the tea tree.

[0020] Furthermore, by setting up a displacement amplification component, the small displacement of the movable cutter can be amplified into a larger displacement. By using a magnetic isolation component, the magnetic isolation between the two magnets is removed. Under the magnetic force of the magnets, the movable cutter can be pulled away from the tea stem, thereby preventing the movable cutter from squeezing the tea stem and avoiding the serrated cutter and movable cutter from continuing to apply cutting force to the tea stem. This ensures that the harvester will not cause continuous damage to the tea stem.

[0021] Furthermore, under the action of the guide groove, the return spring, and the spring, the movable cutter can return to its original position following the serrated cutter, thus not affecting the harvester's next cut. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of the reciprocating cutting blade assembly in this invention;

[0024] Figure 3 This is a partial three-dimensional schematic diagram of the cutting force adjustment component in this invention;

[0025] Figure 4 This is a front view of the broach assembly in this invention;

[0026] Figure 5 for Figure 4 Schematic diagram of section A in the middle;

[0027] Figure 6 This is a schematic diagram of the internal structure of the displacement amplification component;

[0028] Figure 7 This is a three-dimensional schematic diagram of a variable guide groove.

[0029] In the diagram: 1. Receiving box, 2. Mounting frame, 3. Reciprocating cutter assembly, 4. Movable cutter, 5. Cutting force adjustment assembly, 6. Puller assembly, 31. Serrated cutter, 32. Eccentric wheel, 33. Connecting rod, 34. Motor, 51. Movable plate, 52. Spring, 53. Connecting plate, 54. Adjusting bolt, 61. Displacement amplification assembly, 62. Reset spring, 63. Magnet, 64. Magnetic shielding assembly, 611. Hollow sleeve, 612. Piston rod, 613. Telescopic rod, 641. Magnetic shielding plate, 642. Directional change assembly, 6421. Rotating sleeve, 6422. Directional guide groove, 6423. Barrier section. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example:

[0032] Please see Figures 1 to 7 The present invention provides a technical solution:

[0033] A fresh tea leaf harvester includes a collection box 1, a mounting frame 2, a reciprocating cutter assembly 3, movable cutters 4, a cutting force adjustment assembly 5, and a puller assembly 6. The collection box 1 is used to collect the cut tea leaves. The mounting frame 2 is detachably installed inside the collection box 1. The reciprocating cutter assembly 3 is horizontally and movably mounted on the mounting frame 2 and is used to cut the tea leaves. Multiple movable cutters 4 are horizontally and movably mounted on the mounting frame 2 and are serrated with the cutting part of the reciprocating cutter assembly 3.

[0034] The cutting force adjustment component 5 is movably mounted on the mounting bracket 2, and its execution ends are distributed on both sides of the mounting part of the movable cutter 4. The execution ends of the cutting force adjustment component 5 cooperate with the movable cutter 4 to adjust the maximum cutting force.

[0035] The broach assembly 6 is mounted on the mounting bracket 2 and distributed on both sides of the mounting portion of the movable cutter 4;

[0036] Please see Figure 4 , Figure 5 and Figure 6The cutter assembly 6 includes a displacement amplification component 61, a return spring 62, a magnet 63, and a magnetic shielding component 64. The actuating end of the displacement amplification component 61 is located on the side of the mounting part of the movable cutter 4. The displacement amplification component 61 can achieve linear motion. Its execution end is connected to the mounting frame 2 through the return spring 62. The displacement amplification component 61 can output a small displacement at the actuating end as a larger displacement at the execution end. The two magnets 63 are arranged opposite each other with opposite magnetic poles. One magnet 63 is fixedly installed on the side of the mounting part of the movable cutter 4, and the other is located on the mounting frame 2. The magnetic shielding component 64 is movably installed on the mounting frame 2. The actuating end of the magnetic shielding component 64 cooperates with the execution end of the displacement amplification component 61, and the magnetic shielding part of the magnetic shielding component 64 cooperates with the magnet 63 located on the mounting frame 2.

[0037] Please see Figure 2 and Figure 3 In a preferred embodiment, the cutting force adjustment assembly 5 includes a movable plate 51, a spring 52, a connecting plate 53, and an adjusting bolt 54. The movable plate 51 is horizontally movable within a guide groove in the mounting frame 2, forming a linear sliding pair within the guide groove. The movable cutter 4 is connected to the movable plate 51 on both sides via springs 52. The movable plate 51 moves closer to or further away from the side of the movable cutter 4, thereby adjusting the compression of the spring 52 and ultimately changing its elastic force. When the movable cutter 4 cuts tea leaves, it compresses the spring 52, thus... The spring force is the maximum cutting force. When the maximum cutting force required to cut tea leaves exceeds the spring force of spring 52, the movable cutter 4 will undergo a slight displacement. Two connecting plates 53 are horizontally and movably mounted on the mounting frame 2, and are arranged on both sides of the mounting frame 2. The movable plate 51 located on the same side of the mounting part of the movable cutter 4 is fixedly connected to one of the connecting plates 53. The connecting plate 53 connects the movable plates 51 located on the same side of the mounting part of the movable cutter 4 together. Pushing the connecting plate 53 can push all the movable plates 51 located on the same side of the mounting part of the movable cutter 4, thereby adjusting the compression of spring 52. The adjusting bolt 54 is rotatably mounted on the mounting frame 2 and is threaded to the side of the connecting plate 53. Rotating the adjusting bolt 54 can cause the connecting plate 53 to move horizontally.

[0038] Please see Figure 4 and Figure 6In a preferred embodiment, the displacement amplification assembly 61 includes a hollow sleeve 611, a piston rod 612, and a telescopic rod 613. The hollow sleeve 611 has different inner diameters at its two ends, and piston rods 612 are movably fitted inside both ends of the hollow sleeve 611. The space between the two piston rods 612 is filled with a medium. When the piston rod 612 located at the end with the larger inner diameter of the hollow sleeve 611 moves towards the piston rod 612 located at the end with the smaller inner diameter, the slight displacement of the piston rod 612 at the end with the larger inner diameter pushes the medium between the two piston rods 612 towards the end with the smaller inner diameter of the hollow sleeve 611. Because the inner diameters are different, the volumes of the medium at the two ends are different, which in turn makes the inner diameter of the hollow sleeve 611 smaller... A small displacement of the piston rod 612 at the larger end will cause a larger displacement of the piston rod 612 at the smaller end of the hollow sleeve 611. The piston rod 612 at the larger end of the hollow sleeve 611 is equipped with a telescopic rod 613. The telescopic rod 613 is connected to the side of the mounting part of the movable cutter 4. When the movable cutter 4 moves to one side, the movable cutter 4 will pull the telescopic rod 613 to extend. The telescopic rod 613 adopts multi-stage telescopic, so that the extension amount of the telescopic rod 613 can match the displacement amount of the movable cutter 4. In this way, the movement of the movable cutter 4 will not interfere with the movement of the piston rod 612 on the other side of the movable cutter 4. The piston rod 612 at the smaller end of the hollow sleeve 611 is connected to the return spring 62.

[0039] In a preferred embodiment, the magnetic shielding assembly 64 includes a magnetic shielding plate 641 and a reversing assembly 642. The magnetic shielding plate 641 is vertically and movably mounted on the mounting frame 2 and faces the magnet 63 mounted on the mounting frame 2 at its magnetic shielding end. When the magnetic shielding plate 641 faces the magnet 63 on the mounting frame 2, it can isolate the magnetic field lines between the two magnets 63. When the magnetic shielding plate 641 moves away from the magnet 63 on the mounting frame 2, under the magnetic force of the two magnets 63, it can pull the movable cutter 4 closer to the magnet 63 mounted on the mounting frame 2. The moving end of the magnetic shielding plate 641 is fitted inside the execution end of the reversing assembly 642.

[0040] As a preferred embodiment, the magnetic shielding end of the magnetic shielding plate 641 is made of magnetic shielding material, which can isolate magnetic field lines. This is a conventional technical means for those skilled in the art, and its principle and solution will not be described in detail here.

[0041] In a preferred embodiment, the reversing assembly 642 includes a rotating sleeve 6421, a reversing guide groove 6422, and a blocking part 6423. The rotating sleeve 6421 is rotatably mounted on the side of the piston rod 612 located at the end with the larger inner diameter of the hollow sleeve 611. The rotating sleeve 6421 has a reversing guide groove 6422. The actuating end of the magnetic shielding plate 641 is fitted inside the reversing guide groove 6422. When the piston rod 612 moves toward the return spring 62, the rotating sleeve 6421 also moves with the piston rod 612. Subsequently, under the action of the reversing guide groove 6422, it drives the magnetic shielding plate 641 to undergo vertical displacement. The reversing part 6423 is provided at the reversing point in the reversing guide groove 6422 to limit the rotation direction of the rotating sleeve 6421. The blocking part 6423 prevents the rotating sleeve 6421 from rotating in the opposite direction.

[0042] In a preferred embodiment, the reciprocating cutting blade assembly 3 includes a serrated cutting blade 31, an eccentric wheel 32, a connecting rod 33, and a motor 34. The serrated cutting blade 31 is movably fitted onto the mounting frame 2, and its end engages with the eccentric wheel 32 via the connecting rod 33. The eccentric wheel 32 is rotatably mounted on the mounting frame 2 and is powered by the motor 34. The rotation of the eccentric wheel 32 drives the serrated cutting blade 31 to reciprocate on the mounting frame 2, thereby engaging with the movable cutting blade 4 to achieve the purpose of cutting tea leaves.

[0043] In a preferred embodiment, a limiting block is provided inside the end of the hollow sleeve 611 with a smaller inner diameter to prevent the piston rod 612 at the end of the hollow sleeve 611 with a smaller inner diameter from moving to the end of the hollow sleeve 611 with a larger inner diameter.

[0044] As a preferred embodiment, please refer to Figure 6 and Figure 7The variable guide groove 6422 is a spiral groove with the upper part lower than the lower part. The left side of the variable guide groove has a descending arc groove, while the right side has an ascending arc groove. The two ends of the two arc grooves are connected by a horizontal groove. The upper and lower horizontal grooves are lower than the lower part. When the piston rod 612 moves toward the return spring 62, the rotating sleeve 6421 also moves along with the piston rod 612. At this time, the magnetic shielding plate 641 moves upward under the action of the rising arc groove, which causes the magnetic shielding part of the magnetic shielding plate 641 to leave the magnet 63 on the mounting bracket 2. Under the magnetic force of the two magnets 63, the movable cutter 4 is pulled closer to the magnet 63 on the mounting bracket 2. At this time, the movable cutter 4 will also drive the piston rod 612 to continue to compress the return spring 62 through the displacement amplification component 61. When the moving end of the magnetic shielding plate 641 moves into the descending arc groove, under the action of the descending arc groove, the magnetic shielding plate 641 can face the magnet 63 and thus isolate the magnetic field lines. At this time, the serrated cutter 31 will also move away from the movable cutter 4. Then, under the elastic force of the spring 52, the movable cutter 4 will be driven to return to its original position. At the same time, the displacement amplification component 61 will also return to its original position under the elastic force of the return spring 62. Both arc grooves are provided with a blocking part 6423. When the actuating end of the magnetic shielding plate 641 moves within the arc-shaped groove, the rotating sleeve 6421 will rotate to a certain extent. By providing the blocking part 6423, when the rotating sleeve 6421 rotates, the actuating end of the magnetic shielding plate 641 will only rise within the rising arc-shaped groove and will not descend, while in the descending arc-shaped groove, the actuating end of the magnetic shielding plate 641 will only descend. Consequently, when the movable cutter 4 resets, it will not interfere with the magnetic shielding action of the magnetic shielding plate 641.

[0045] Working principle of the invention:

[0046] When using this device, since the hardness of tender tea leaves is lower than that of tea stems, it is necessary to adjust the maximum cutting force of the movable cutter 4. This maximum cutting force must be greater than the force required to cut tender tea leaves, while simultaneously avoiding cutting the tea stems; therefore, the maximum cutting force must also be less than the force required to cut the tea stems. Thus, first, rotate the adjusting bolt 54 to move the connecting plate 53. Then, adjust the spring force of the springs 52 between all the movable plates 51 and the movable cutter 4 on the same side of the mounting part of the movable cutter 4. Next, adjust the mounting part of the movable cutter 4 on the other side of the mounting part of the movable cutter 4 via another connecting plate 53. By adjusting the spring force of the springs 52, the maximum cutting force for cutting tea leaves is adjusted.

[0047] After the cutting force is adjusted, the motor 34 is started, which drives the eccentric wheel 32 to rotate. The eccentric wheel 32 drives the serrated cutter 31 to reciprocate through the connecting rod 33, thus enabling the cutting of tea leaves.

[0048] When the harvester cuts the tea stem, since the maximum cutting force is less than the force required to cut the stem, the serrated cutter 31 pushes the movable cutter 4 away from the stem. The movable cutter 4 then pushes the piston rod 612 in one side of the displacement amplification assembly 61. The displacement amplification assembly 61 converts the small displacement of the movable cutter 4 into a larger displacement of the piston rod 612 on the other end. At this time, the piston rod 612 moves towards the return spring 62, and the rotating sleeve 6421 also moves with the piston rod 612. Simultaneously, the magnetic shielding plate 641 moves upward under the action of the rising arc groove, thereby causing the magnetic shielding part of the magnetic shielding plate 641 to... After leaving the magnet 63 on the mounting bracket 2, the movable cutter 4 is pulled closer to the magnet 63 on the mounting bracket 2 by the magnetic force of the two magnets 63. At this time, the movable cutter 4 will also drive the piston rod 612 to continue to compress the return spring 62 through the displacement amplification component 61. When the moving end of the magnetic shielding plate 641 moves into the descending arc groove, the magnetic shielding plate 641 can face the magnet 63 directly under the action of the descending arc groove, thereby isolating the magnetic field lines. At this time, the serrated cutter 31 will also move away from the movable cutter 4, and then the movable cutter 4 will be driven to return to its original position under the elastic force of the spring 52. At the same time, the displacement amplification component 61 will also be reset under the elastic force of the return spring 62.

[0049] When the movable cutter 4 moves to one side, it will pull the telescopic rod 613 to extend. The telescopic rod 613 adopts multi-stage telescopic extension, so that the extension amount of the telescopic rod 613 can match the displacement of the movable cutter 4, thereby ensuring that the movement of the movable cutter 4 will not interfere with the movement of the piston rod 612 on the other side of the movable cutter 4.

[0050] When the actuating end of the magnetic shielding plate 641 moves within the arc-shaped groove, the rotating sleeve 6421 will rotate to a certain extent. The blocking part 6423 will restrict the rotation of the rotating sleeve 6421, ensuring that the actuating end of the magnetic shielding plate 641 only rises within the ascending arc-shaped groove and does not descend, while the actuating end of the magnetic shielding plate 641 only descends within the descending arc-shaped groove. Consequently, when the movable cutter 4 resets, it will not interfere with the magnetic shielding action of the magnetic shielding plate 641.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fresh tea leaf harvester, comprising a receiving box (1), a mounting frame (2), a reciprocating cutter assembly (3), a movable cutter (4), a cutting force adjustment assembly (5), and a puller assembly (6), wherein the mounting frame (2) is disposed inside the receiving box (1), the reciprocating cutter assembly (3) is movably mounted on the mounting frame (2), and the movable cutter (4) is movably mounted on the mounting frame (2) and is serrated with the cutting part of the reciprocating cutter assembly (3), characterized in that: The cutting force adjustment component (5) is movably mounted on the mounting bracket (2), and its execution ends are distributed on both sides of the mounting part of the movable cutter (4). The execution ends of the cutting force adjustment component (5) cooperate with the movable cutter (4) to adjust the maximum cutting force. The puller assembly (6) is mounted on the mounting bracket (2) and distributed on both sides of the mounting portion of the movable cutter (4); The puller assembly (6) includes a displacement amplification assembly (61), a return spring (62), a magnet (63), and a magnetic shielding assembly (64). The actuating end of the displacement amplification assembly (61) is located on the side of the mounting part of the movable cutter (4). The displacement amplification assembly (61) can achieve linear motion. Its execution end is connected to the mounting frame (2) through the return spring (62). The two magnets (63) are arranged opposite each other with opposite magnetic poles. One magnet (63) is located on the side of the mounting part of the movable cutter (4), and the other is located on the mounting frame (2). The magnetic shielding assembly (64) is movably mounted on the mounting frame (2). The actuating end of the magnetic shielding assembly (64) cooperates with the execution end of the displacement amplification assembly (61), and the magnetic shielding part of the magnetic shielding assembly (64) cooperates with the magnet (63) located on the mounting frame (2). The magnetic shielding assembly (64) includes a magnetic shielding plate (641) and a reversing assembly (642). The magnetic shielding plate (641) is movably fitted on the mounting frame (2) and its magnetic shielding end faces the magnet (63) provided on the mounting frame (2). The actuating end of the magnetic shielding plate (641) is fitted inside the actuating end of the reversing assembly (642). The reversing assembly (642) includes a rotating sleeve (6421), a reversing guide groove (6422), and a blocking part (6423). The rotating sleeve (6421) has a reversing guide groove (6422), and the actuating end of the magnetic shielding plate (641) is fitted inside the reversing guide groove (6422). The reversing part (6423) inside the reversing guide groove (6422) is provided to restrict the rotation direction of the rotating sleeve (6421). The variable guide groove (6422) is a spiral groove. The variable guide groove (6422) is lower at the top and higher at the bottom. The left side of the variable guide groove is provided with a descending arc groove, while the right side is provided with an ascending arc groove. Both arc grooves are provided with a baffle (6423).

2. The fresh tea leaf harvester according to claim 1, characterized in that: The cutting force adjustment assembly (5) includes a movable plate (51), a spring (52), a connecting plate (53), and an adjusting bolt (54). The movable plate (51) is movably fitted in the guide groove provided in the mounting frame (2). The two sides of the movable cutter (4) are respectively connected to the movable plate (51) by springs (52). The two connecting plates (53) are movably mounted on the mounting frame (2). The movable plate (51) located on the same side of the mounting part of the movable cutter (4) is fixedly connected to one of the connecting plates (53). The adjusting bolt (54) is rotatably mounted on the mounting frame (2) and is threadedly fitted to the side of the connecting plate (53).

3. A fresh tea leaf harvester according to claim 2, characterized in that: The displacement amplification component (61) includes a hollow sleeve (611), a piston rod (612), and a telescopic rod (613). The hollow sleeve (611) has different inner diameters at both ends. Piston rods (612) are movably fitted inside both ends of the hollow sleeve (611). The space between the two piston rods (612) is filled with a medium. The piston rod (612) located at the end with the larger inner diameter of the hollow sleeve (611) is provided with a telescopic rod (613). The telescopic rod (613) is connected to the side of the mounting part of the movable cutter (4). The piston rod (612) located at the end with the smaller inner diameter of the hollow sleeve (611) is connected to a return spring (62).

4. A fresh tea leaf harvester according to claim 3, characterized in that: The rotating sleeve (6421) is rotatably mounted on the side of the piston rod (612) located at the end with the larger inner diameter of the hollow sleeve (611).

5. A fresh tea leaf harvester according to claim 4, characterized in that: The reciprocating cutter assembly (3) includes a serrated cutter (31), an eccentric wheel (32), a connecting rod (33), and a motor (34). The serrated cutter (31) is movably fitted on the mounting frame (2) and performs end engagement with the eccentric wheel (32) through the connecting rod (33) at its end. The eccentric wheel (32) is rotatably mounted on the mounting frame (2) and powered by the motor (34).

6. A fresh tea leaf harvester according to claim 4, characterized in that: The hollow sleeve (611) has a limiting block inside the smaller inner diameter end.

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