Stepped conveying type tea harvesting and grading all-in-one machine

Abstract

A step conveying type tea leaf harvesting and grading all-in-one machine comprises a main body, at least one feeding mechanism is arranged on the main body, a swing leaf shifting piece is arranged at the front end of each feeding mechanism, a discharging unit is connected to the rear end of each feeding mechanism, and a cutting assembly is arranged at the rear position below each feeding mechanism; tea leaves are assisted to enter the first conveying channel to be cut and conveyed through the swing leaf shifting part, the tea leaves are rapidly divided and guided through the feed port with the wide front portion and the narrow rear portion and the first conveying assembly and the second conveying assembly which are arranged in a staggered mode, the cutting efficiency and smoothness are improved, and the cutting efficiency is improved. The cut tea leaves can be conveyed to a preset position through the feeding mechanism, the tea leaves can be sorted according to the length of the tea leaves through the arrangement of the feeding unit and the sorting unit, the subsequent selection procedure is avoided, the tea leaves are prevented from being damaged during transportation through belt conveying, and the tea leaves are not damaged during transportation through the open type discharging mechanism. And the tea leaves can easily fall off from the belt.

Description

A stepped conveyor type tea harvesting and grading integrated machine Technical Field

[0001] This utility model relates to the field of tea picking, specifically a stepped conveyor type integrated tea picking and grading machine. Background Technology

[0002] my country is the origin of tea, with a long history of tea production and a huge tea output. We also have the highest requirements for the quality of raw tea materials, requiring tea leaves of different sizes to be harvested separately. Traditionally, tea is harvested manually, allowing for control over the size of the harvested leaves. However, manual harvesting is inefficient, and labor costs are rising. Relying entirely on manual harvesting would significantly impact tea production.

[0003] Although various tea-picking machines are available on the market now, most of them lack the functions of initial screening, transportation, and grading, and cannot guarantee that the tea leaves will not be damaged.

[0004] For example, CN102783309A discloses an electric tea-picking machine, characterized by connecting the upward-extending rotating shaft of the same motor to a fan impeller and the downward-extending rotating shaft to a transmission mechanism for the working blades. Specifically, the upper output shaft of the motor is fixed to the fan impeller, the lower output shaft of the DC motor is fixed to the central shaft of the crankshaft disk, the two eccentric wheel pins of the crankshaft disk are movably connected to the large end of the upper and lower connecting rods, and the small end of the upper and lower connecting rods are movably connected to the upper and lower blades, respectively. Alternatively, the lower output shaft of the DC motor is set as an external gear shaft, which meshes with the internal gear of an inner and outer diameter gear, and the external gear of the inner and outer diameter gear meshes with the outer diameter edge gear of the crankshaft disk.

[0005] For example, CN108207313A discloses a tea-picking machine, including a vehicle body with a walking mechanism at the bottom, a column on the vehicle body, and a shear unit mounted on a shear bracket. The shear unit is arranged in an arc shape that matches the curved shape of the tea tree crown A. The shear bracket is connected to the column, and a pneumatic blowing pipe and a tea collection bag are mounted on the shear bracket. The airflow from the pneumatic blowing pipe is directed towards the opening of the tea collection bag. The shear unit is located between the outlet of the pneumatic blowing pipe and the opening of the tea collection bag. The tea leaves cut by the shear unit are immediately blown towards the opening of the tea collection bag by the airflow from the pneumatic blowing pipe. In this way, the tea leaves are collected into the tea collection bag in a timely manner while the tea-picking machine is moving and cutting. After the tea collection bag has collected an appropriate amount of tea leaves, it can be replaced or the tea leaves in the bag can be emptied and transferred.

[0006] The above-mentioned technical solutions all involve cutting off everything that enters the shearing range and sending it indiscriminately into the storage silo. The cut tea leaves include a mixture of raw materials such as new shoots, short leaves, tender leaves, old leaves, and tea stems. Subsequent manual sorting and classification are still required, which increases labor costs and is inefficient. Therefore, it is necessary to design a stepped conveyor type integrated tea harvesting and grading machine to realize the initial screening, transportation, and grading of tea leaves, thereby solving the problems existing in the current technology. Summary of the Invention

[0007] The purpose of this invention is to provide a stepped conveyor type integrated tea harvesting and grading machine, which enables auxiliary feeding and grading of tea leaves during the harvesting process, thereby enhancing the collection effect of the cut tea leaves. This invention eliminates the need for post-harvesting sorting, avoiding damage to the tea leaves during harvesting, thus solving the existing technical defects and unmet technical requirements.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a stepped conveyor type tea harvesting and grading integrated machine, comprising a main body, at least one feeding mechanism on the main body, a swing leaf-picking component at the front end of the feeding mechanism, a discharge unit connected to the rear end of the feeding mechanism, and a cutting component below the feeding mechanism.

[0009] The oscillating leaf-picking component oscillates, assisting the tea leaves to enter the feeding mechanism. The feeding mechanism clamps and transports the tea leaves to the discharge unit. Before reaching the discharge unit, the clamped and transported tea leaves are cut by the cutting component.

[0010] Preferably, the feeding mechanism includes at least one feeding unit and a grading unit, wherein the grading unit is located above and rear of the feeding unit;

[0011] The feeding unit includes a first feeding component and a second feeding component. A first conveying channel and a feed inlet are formed between the first feeding component and the second feeding component. The feed inlet gradually narrows from the front end of the feeding unit to the first conveying channel, and the feed inlet is formed by at least two inclined surfaces.

[0012] The grading unit and the feeding unit are positioned in a one-to-one correspondence. The grading unit includes a third feeding component and a fourth feeding component. The third feeding component is located above and behind the first feeding component, and the fourth feeding component is located above and behind the second feeding component. A second conveying channel is formed between the third feeding component and the fourth feeding component.

[0013] The tea leaves are gathered into the first conveying channel from the inlet. The feeding unit clamps and transports the tea leaves through the first feeding component and the second feeding component. Shorter tea leaves fall from the rear end of the first conveying channel to the first preset position in the discharge unit, while longer tea leaves are continuously clamped and transported along the second conveying channel to the second preset position in the discharge unit, thereby achieving the grading of tea leaves of different lengths.

[0014] Preferably, each feeding assembly includes a conveyor belt and multiple pulleys. The conveyor belt is fitted around several pulleys to form a loop. Several protrusions are provided on the outer side wall of the pulleys to prevent the conveyor belt from falling off the pulleys.

[0015] Preferably, the first feeding assembly includes: a first pulley, a second pulley, a third pulley, a first conveyor belt, and a first mounting base. The first pulley is disposed at a front end position on the first mounting base, the third pulley is disposed at a rear end position on the first mounting base, the second pulley is located between the first pulley and the third pulley, the first conveyor belt is sleeved on the first pulley, the second pulley, and the third pulley, the distance between the third pulley and the second pulley is greater than the distance between the first pulley and the second pulley, the distances from the second pulley and the third pulley to the first conveying channel are the same, and this distance is less than the distance from the first pulley to the first conveying channel.

[0016] The second feeding assembly includes a fourth pulley, a fifth pulley, a sixth pulley, a second conveyor belt, and a second mounting base. The fourth pulley is located at the front end of the second mounting base, the sixth pulley is located at the rear end of the second mounting base, and the fifth pulley is located between the fourth and sixth pulleys. The second conveyor belt is sleeved over the fourth, fifth, and sixth pulleys. The distance between the sixth and fifth pulleys is greater than the distance between the fourth and fifth pulleys. The distances from the fifth and sixth pulleys to the first conveying channel are the same, and this distance is less than the distance from the fourth pulley to the first conveying channel.

[0017] The conveyor belt between the first and second pulleys forms an inclined surface around the feed inlet, and the conveyor belt between the fourth and fifth pulleys forms another inclined surface around the feed inlet. A first conveying channel is formed between the first conveyor belt between the second and third pulleys and the second conveyor belt between the fifth and sixth pulleys.

[0018] Preferably, the adjacent feeding units and the grading units are symmetrically arranged, and the first conveying channels in each feeding unit are parallel to each other, and the second conveying channels in each grading unit are parallel to each other;

[0019] Both the feeding unit and the grading unit are provided with a mounting base. The mounting base is located above a plurality of pulleys and is rotatably connected to the mounting base. The oscillating blade is located on the top of the mounting base and is provided with a rotating end, a free end and a driven member. The rotating end is rotatably connected to the mounting base, the free end extends out of the mounting base in a direction away from the mounting base, and the driven member is located between the free end and the rotating end of the oscillating blade.

[0020] Both the second and fifth pulleys are provided with eccentric wheel portions, and the mounting base is also provided with an elastic element. The oscillating blade above the first feeding assembly abuts against the eccentric wheel portion on the second pulley through the driven member. The elastic element on the mounting base corresponding to the first feeding assembly abuts against the driven member on the side away from the second pulley. The oscillating blade above the second feeding assembly abuts against the eccentric wheel portion on the fifth pulley through the driven member. The elastic element on the mounting base corresponding to the second feeding assembly abuts against the driven member on the side away from the fifth pulley. The oscillating drive of the oscillating blade is completed by the rotation of the second and fifth pulleys respectively.

[0021] In this application, the mounting base refers to the first mounting base and the second mounting base mentioned above, that is, the first mounting base and the second mounting base mentioned above are collectively referred to as the mounting base.

[0022] Preferably, the adjacent feeding units and the grading units are symmetrically arranged, and the first conveying channels in each feeding unit are parallel to each other, and the second conveying channels in each grading unit are parallel to each other;

[0023] Both the feeding unit and the grading unit are provided with a mounting base. The mounting base is located above a plurality of pulleys and is rotatably connected to the mounting base. The oscillating blade is located on the top of the mounting base and is provided with a rotating end, a free end and a driven member. The rotating end is rotatably connected to the mounting base, the free end extends out of the mounting base in a direction away from the mounting base, and the driven member is located between the free end and the rotating end of the oscillating blade.

[0024] Both the second and fifth pulleys are provided with eccentric wheel portions. The oscillating blade component above the first feeding assembly abuts against the eccentric wheel portions on two adjacent and synchronously rotating second pulleys through the driven component. The oscillating blade component above the second feeding assembly abuts against the eccentric wheel portions on two adjacent and synchronously rotating fifth pulleys through the driven component. The oscillation drive of the oscillating blade component is completed by the rotation of the second and fifth pulleys respectively.

[0025] In this application, the following points require further explanation: the eccentric wheel portion mentioned above is one type of cam structure, while in this application, the eccentric wheel portion is only one method. It can be understood that the oscillation of the oscillating leaf piece in this application is achieved through a cam structure. Furthermore, since the feeding units are symmetrical, it needs to be further explained that this symmetry refers to the overall positional symmetry. For the second and fifth pulleys, both are provided with eccentric wheel portions. In addition, it should be emphasized that the "convex" direction of the eccentric wheel portions on adjacent second pulleys and adjacent fifth pulleys is the same. That is, although they have the same shape and symmetrical position, the radius of the cross-section of the eccentric wheel portions on the same mounting base in the same direction is the same.

[0026] Furthermore, the free end is provided with a comb blade portion, one end of which is connected to the swing end, and the other end is inclined downwards away from the base, and the width of the comb blade portion gradually decreases along the inclined direction.

[0027] In this application, it needs to be further explained that the width of the comb blade gradually decreases along the inclined direction. This inclined direction consists of two directions: the vertical direction and the horizontal direction (the horizontal direction from the front end to the back end). Therefore, the above-mentioned gradual change in width along the inclined direction refers to the change in width in both the horizontal and vertical directions. That is, it can be understood as the width gradually decreasing from top to bottom and from back to front.

[0028] Preferably, the front end of the first feeding component is located at the rear side of the front end of the second feeding component;

[0029] The third pulley is located at a position slightly forward or backward on the side of the sixth pulley, so that the rear section of the first conveyor belt is offset from the rear section of the second conveyor belt, forming a first discharge port connected to the rear end of the first conveying channel.

[0030] In this application, it is necessary to further explain that the included angle between the two inclined surfaces on the feed inlet is in the range of 2° to 179°, and the second pulley and the fifth pulley can be adjusted back and forth to adjust the opening angle of the discharge outlet and the length of the conveying channel.

[0031] The second and fifth pulleys can be adjusted left and right to adjust the opening angle of the discharge port and the width of the first conveying channel.

[0032] The above can be understood as the second and fifth pulleys being adjustable in position on the base. After adjustment, they can still be positioned on the base to complete normal operation, thereby improving the adaptability of this application.

[0033] Preferably, the third feeding assembly includes a seventh pulley, an eighth pulley, a third conveyor belt, and a third mounting base. The seventh pulley is located at the front end of the third mounting base and is positioned above the third pulley. The third pulley rotates coaxially with the seventh pulley. The eighth pulley is located at the rear end of the third mounting base. The third conveyor belt is sleeved around the seventh and eighth pulleys.

[0034] The fourth feeding assembly includes a ninth pulley, a tenth pulley, a fourth conveyor belt, and a fourth mounting base. The ninth pulley is located at the front end of the fourth mounting base and is above the fourth pulley. The fourth pulley rotates coaxially with the ninth pulley. The tenth pulley is located at the rear end of the fourth mounting base. The fourth conveyor belt is sleeved over the ninth and tenth pulleys.

[0035] A second conveying channel is formed between the third and fourth conveyor belts;

[0036] The eighth pulley is located at a position slightly forward or backward on the side of the tenth pulley, so that the rear section of the third conveyor belt is offset from the fourth conveyor belt, forming a second discharge port connected to the rear end of the second conveying channel.

[0037] In this application, the rear ends of both the feeding unit and the grading unit are staggered in length. It needs further explanation that the staggered arrangement of the rear end of the feeding unit does not necessarily need to be synchronized with the staggered arrangement of the front end. That is, the staggered arrangement of the components at the rear end of the feeding unit can be the same as the staggered arrangement of the front end (the rear end of a component relative to another component is also positioned forward), or it can be staggered (the rear end of a component relative to another component is positioned backward). Since the third pulley rotates coaxially with the seventh pulley, and the fourth pulley rotates coaxially with the ninth pulley, the staggered arrangement of the front end of the grading unit is synchronized with the staggered arrangement of the rear end of the feeding unit. However, it should be further emphasized that the staggered arrangement of the rear end of the grading unit can also be either synchronized or staggered with the staggered arrangement of the front end.

[0038] Preferably, the discharge unit includes at least:

[0039] The first receiving port is located below the first feeding component and extends horizontally away from the swing leaf-picking component. It is used to receive shorter tea leaves held by the first feeding component as a first preset position.

[0040] The second receiving port is located above the first receiving port and below the second feeding component. There is a falling space between the first feeding component and the second receiving port. The shorter tea leaves fall into the first receiving port through the falling space, and the second receiving port serves as a second preset position to receive the longer tea leaves.

[0041] Preferably, a cutting assembly is disposed below the mounting base, the cutting assembly comprising:

[0042] It includes a first blade holder and a second blade holder. The first blade holder rests against the second blade holder. The first blade holder is evenly provided with a plurality of first blade teeth, and the second blade holder is evenly provided with a plurality of second blade teeth. The first blade teeth and the second blade teeth are spaced apart in the horizontal direction. The first blade holder and the second blade holder can slide relative to each other, so that the spaced first blade teeth and the second blade teeth overlap in the vertical direction or exchange positions in the horizontal direction to complete the cutting of tea leaves.

[0043] In this application, it is necessary to further explain that, in the above description of the tool holder, the horizontal direction means the direction along the length of the tool holder in the plane where the tool holder is located. However, in the description of the first discharge port and the second discharge port in the text, the horizontal direction refers to the plane that is horizontal relative to the ground, and it is the direction from the front end to the rear end of the overall structure in this application. This horizontal direction is intersecting or perpendicular to the horizontal direction in the aforementioned description of the tool holder.

[0044] Alternatively, the cutting assembly may include a blade holder, a first circular blade, and a second circular blade. The blade holder is connected to a mounting base and is located below several mounting bases. The first and second circular blades are periodically distributed on the blade holder along its length, and the first and second circular blades are rotatable on the blade holder.

[0045] The first and second circular blades rotate to cut the tea leaves that have entered the first conveying channel.

[0046] The first circular blade and the second circular blade partially overlap in the vertical direction or are tangent in the horizontal direction.

[0047] In this application, the structure of the first and second circular blades can be understood as follows: Firstly, there is partial overlap in the vertical direction. This can be understood as the first and second circular blades being located on different layers in the vertical direction, with some overlap in their cutting edges or contours. In terms of quantity, the two types of blades can have a one-to-one correspondence, a one-to-many relationship, or a many-to-many relationship. In the one-to-many or many-to-many case, the more numerous blades are spaced apart in the vertical direction, and the other type of blade is located in the space between the spaced blades in the vertical direction, with partial overlap. Regarding the tangent contours, this can be understood as the two types of blades being located in the same layer, and their cutting edges being tangent to each other. Furthermore, the layer mentioned above can be understood as the plane on which the blades are located. It should be further noted that the two types of blades mentioned above are "periodically" distributed on the tool holder regarding the vertical overlap. This can be understood as the combination of the two types of blades described above in this paragraph being a cyclical group. Although it is distributed cyclically in the form of groups, the distribution between groups must also conform to the explanation of the cyclical distribution of the two types of blades within the cyclical group in this paragraph. For example, a cyclical group consists of one first circular blade and two second circular blades. The overlapping part in the vertical direction of the group, from top to bottom, is the second circular blade, the first circular blade, and the second circular blade. Then, a first circular blade in an adjacent group must also have an overlapping part between the two second circular blades in the above group. That is, the blades in the cyclical group are arranged in the horizontal direction as one first circular blade and two second circular blades. The connection relationship between the two groups is: the two second circular blades distributed at intervals in the vertical direction have an overlapping part on one side with the first circular blade in the same group, and the other side also has an overlapping part with the first circular blade in the adjacent group.

[0048] Preferably, the feeding unit is inclined on the main body, that is, inclined from the front end to the rear end, and the angle between the feeding unit and the plane where the bottom of the main body is located is 1° to 50°.

[0049] Preferably, it also includes a bud protection component, which is connected to the mounting base and is disposed above or below the cutting component, wherein the portion of the bud protection component located below the mounting base extends forward to the front of the cutting component;

[0050] The bud protection component includes:

[0051] A support frame, which is connected to the mounting base and is positioned above or below the tool holder;

[0052] A bud-preserving board is provided at intervals on the support frame and only below each mounting base. One end of the bud-preserving board is connected to the support frame 8, and the other end extends away from the support frame, extending at least to the front of the cutting component, to prevent the buds located below the mounting base from being cut by the cutting component.

[0053] In this application, the statement that the bud-preserving plate is only located below the mounting base can be understood as the bud-preserving plate being located entirely below the mounting base. It can extend in the length direction of the mounting base, or in the vertical direction, or in either of the above two ways to prevent tilting after assembly. However, the bud-preserving plate cannot extend in the width direction of the mounting base, that is, the width of the bud-preserving plate cannot exceed the width of the transmission component, so as not to obstruct tea leaves entering the conveying channel or below the conveying channel.

[0054] In this application, the structure of mounting the blade on the tool holder described above is a common technology in the prior art. For example, the blade can be mounted on a rotating shaft, and the tool holder has a hole for mounting the rotating shaft. The rotating shaft passes through this hole and is mounted on the tool holder. The rotating shaft can rotate on the tool holder, and the rotating shaft is connected to the output end of a drive motor. The rotating shaft is driven to rotate by the drive motor, thereby causing the blade to rotate. This application does not specifically limit the driving of the blade or the connection method between the blade and the tool holder.

[0055] Compared with the prior art, the beneficial effects of this utility model are:

[0056] 1. This utility model uses a swinging leaf-dispensing component to assist tea leaves in entering the first conveying channel for cutting and transportation. The feed inlet, which is wider at the front and narrower at the back, and the staggered arrangement of the first and second conveying components facilitate rapid diversion and guidance of the tea leaves, improving cutting efficiency and smoothness. The feeding mechanism can transport the cut tea leaves to the preset position. Furthermore, through the setting of the feeding unit and the grading unit, the tea leaves can be graded according to their length, avoiding subsequent selection processes. The use of belt transportation prevents the tea leaves from being damaged during transportation, and the open discharge mechanism helps the tea leaves to fall off the belt.

[0057] 2. Each feeding unit and grading unit of this application has multiple protrusions on its pulleys to increase the stability between the pulleys and the conveyor belt. In addition, the second and fifth pulleys are adjustable and can move forward, backward, left, and right to adjust the angle of the feed inlet and the width of the first conveying channel, so that this application can adapt to various teas and improve its adaptability. Furthermore, the second and fifth pulleys are also cam-mounted, which provides a better operating environment for the second and fifth pulleys when they are adjusted or rotated, so that the conveyor belt can always be in close contact with the pulleys.

[0058] 3. The top of the separator in this application is equipped with a swinging leaf-dispensing component, which helps the tea leaves enter the feeding unit better by swinging the leaf-dispensing component. The leaf-combing part can comb and dispensing the tea leaves to both sides to help the tea leaves enter the feeding mechanism better and more efficiently along the feed inlet, thereby improving harvesting efficiency and harvesting net yield.

[0059] 5. This application includes a bud-preserving plate. By setting the bud-preserving plate, the cutting component can be prevented from cutting tea leaves with a large tilt at non-feed inlets, so as to ensure that tea leaves with a large tilt can be cut at the feed inlet. The length of the cut tea leaves is controlled within a certain range, which improves the fault tolerance rate of the oscillating leaf-picking component assisting the tea leaves to enter the first conveying channel. Attached Figure Description

[0060] Figure 1 is a schematic diagram of the overall structure in Embodiment 1 of this utility model;

[0061] Figure 2 is a rear view of Embodiment 1 of this utility model;

[0062] Figure 3 is a schematic diagram of the overall structure of the feeding mechanism in Embodiment 1 of this utility model;

[0063] Figure 4 is an exploded view of the overall structure of the feeding mechanism in Embodiment 1 of this utility model;

[0064] Figure 5 is a top view of part of the structure in Embodiment 1 of this utility model;

[0065] Figure 6 is a partially enlarged schematic diagram of section B in Figure 5 of Embodiment 1 of this utility model;

[0066] Figure 7 is a partial enlarged schematic diagram of the present invention shown in Figure 7 at 5 locations;

[0067] Figure 8 is a top view of the overall structure of the feeding unit in Embodiment 1 of this utility model;

[0068] Figure 9 is a top view of the overall structure of the hierarchical unit in Embodiment 1 of this utility model;

[0069] Figure 10 is a partial structural schematic diagram of Embodiment 1 of this utility model;

[0070] Figure 11 is a schematic diagram of the overall structure of the oscillating leaf component in Embodiment 1 of this utility model;

[0071] Figure 12 is a top view of the driven member in Embodiment 1 of this utility model;

[0072] Figure 13 is a top view of the driven member in Embodiment 2 of this utility model;

[0073] Figure 14 is a schematic diagram showing the position and structural relationship of the first circular blade and the second circular blade in Embodiment 3 of this utility model;

[0074] Figure 15 is a schematic diagram showing the position and structural relationship of the first circular blade and the second circular blade in Embodiment 4 of this utility model.

[0075] Figure 16 is a schematic diagram showing the position and structural relationship of the first circular blade and the second circular blade in Embodiment 5 of this utility model.

[0076] In the diagram: 1. Main body; 2. Oscillating blade component; 3. First feeding assembly; 4. Second feeding assembly; 5. First conveying channel; 6. Inlet; 7. Third feeding assembly; 8. Fourth feeding assembly; 9. Second conveying channel; 10. Protrusion; 11. First pulley; 12. Second pulley; 13. Third pulley; 14. First conveyor belt; 15. First mounting base; 16. Fourth pulley; 17. Fifth pulley; 18. Sixth pulley; 19. Second conveyor belt; 20. Second mounting base; 21. Rotating end; 22. Free end; 23. Driven component; 23. First outlet. 24. Seventh pulley; 25. Eighth pulley; 26. Third conveyor belt; 27. Third mounting base; 28. Ninth pulley; 29. ​​Tenth pulley; 30. Fourth conveyor belt; 31. Fourth mounting base; 32. Second discharge port; 33. First receiving port; 34. Second receiving port; 35. First cutter holder; 36. Second cutter holder; 37. First cutter tooth; 38. Second cutter tooth; 39. First inclined surface; 40. Second inclined surface; 41. Comb blade; 42. Germination plate; 43. Third surface; 44. First circular blade; 45. Second circular blade; 46. Elastic element; 47. Detailed Implementation

[0077] The technical solutions of the present utility model will be clearly and completely described below with reference to Figures 1-16 in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0078] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0079] Please refer to Figures 1-16 for an embodiment of this utility model:

[0080] Example 1:

[0081] As shown in Figure 1: A stepped conveyor type tea harvesting and grading integrated machine includes a main body 1, at least one feeding mechanism is provided on the main body 1, a swing leaf-picking component 2 is provided at the front end of the feeding mechanism, a discharge unit is connected to the rear end of the feeding mechanism, and a cutting component is provided below the feeding mechanism.

[0082] The oscillating leaf-picking component 2 oscillates to assist the tea leaves in entering the feeding mechanism. The feeding mechanism clamps and transports the tea leaves to the discharge unit. Before reaching the discharge unit, the clamped and transported tea leaves are cut by the cutting component.

[0083] In this embodiment, by setting the swing leaf-picking component 2, the tea leaves can be actively combed to both sides during tea picking, so that the tea leaves can smoothly enter the conveying channel and be picked in a concentrated manner, thereby improving the efficiency of tea picking and sorting. This avoids the phenomenon that the tea leaves are pushed down and bent due to dense tea leaves, making them difficult to be held by the feeding unit, which in turn affects the harvesting and cleaning rate.

[0084] As shown in Figure 3-9: The feeding mechanism includes at least one feeding unit and a grading unit, wherein the grading unit is located above and behind the feeding unit;

[0085] The feeding unit includes a first feeding component 3 and a second feeding component 4. A first conveying channel 5 and a feed inlet 6 are formed between the first feeding component 3 and the second feeding component 4. The feed inlet 6 gradually narrows from the front end of the feeding unit to the first conveying channel 5, and the feed inlet 6 is formed by at least two inclined surfaces.

[0086] The grading unit and the feeding unit are positioned in a one-to-one correspondence. The grading unit includes a third feeding component 7 and a fourth feeding component 8. The third feeding component 7 is located above and behind the first feeding component 3, and the fourth feeding component 8 is located above and behind the second feeding component 4. A second conveying channel 9 is formed between the third feeding component 7 and the fourth feeding component 8.

[0087] The tea leaves are collected from the inlet 6 into the first conveying channel 5. The feeding unit clamps and transports the tea leaves through the first feeding component 3 and the second feeding component 4. Shorter tea leaves fall from the rear end of the first conveying channel 5 to the first preset position in the discharge unit, while longer tea leaves are continuously clamped and transported along the second conveying channel 9 to the second preset position in the discharge unit, thereby achieving the grading of tea leaves of different lengths.

[0088] As shown in Figure 9, each feeding assembly includes a conveyor belt and multiple pulleys. The conveyor belt is sleeved around several pulleys to form a loop. Several protrusions 10 are provided on the outer side wall of the pulleys to prevent the conveyor belt from falling off the pulleys.

[0089] In this embodiment, the protrusion 10 can make the conveyor belt and the pulley more stable during transmission in the vertical direction, preventing the conveyor belt from falling off the pulley. In addition, in the horizontal direction, it can increase the contact force between the conveyor belt and the pulley, further increasing the stability of their transmission. Furthermore, the protrusion 10 also increases the contact area between the pulley and the conveyor belt, enhancing the contact stability between the pulley and the conveyor belt.

[0090] As shown in Figures 3-6, the first feeding assembly 3 includes a first pulley 11, a second pulley 12, a third pulley 13, a first conveyor belt 14, and a first mounting base 15. The first pulley 11 is located at the front end of the first mounting base 15, and the third pulley 13 is located at the rear end of the first mounting base 15. The second pulley 12 is located between the first pulley 11 and the third pulley 13. The first conveyor belt 14 is sleeved on the first pulley 11, the second pulley 12, and the third pulley 13. The distance between the third pulley 13 and the second pulley 12 is greater than the distance between the first pulley 11 and the second pulley 12. The distances from the second pulley 12 and the third pulley 13 to the first conveying channel 5 are the same, and this distance is less than the distance from the first pulley 11 to the first conveying channel 5.

[0091] The second feeding assembly 4 includes a fourth pulley 16, a fifth pulley 17, a sixth pulley 18, a second conveyor belt 19, and a second mounting base 20. The fourth pulley 16 is located at the front end of the second mounting base 20, the sixth pulley 18 is located at the rear end of the second mounting base 20, and the fifth pulley 17 is located between the fourth pulley 16 and the sixth pulley 18. The second conveyor belt 19 is sleeved on the fourth pulley 16, the fifth pulley 17, and the sixth pulley 18. The distance between the sixth pulley 18 and the fifth pulley 17 is greater than the distance between the fourth pulley 16 and the fifth pulley 17. The distances from the fifth pulley 17 and the sixth pulley 18 to the first conveying channel 5 are the same, and this distance is less than the distance from the fourth pulley 16 to the first conveying channel 5.

[0092] The conveyor belt between the first pulley 11 and the second pulley 12 forms an inclined surface surrounding the feed inlet 6, and the conveyor belt between the fourth pulley 16 and the fifth pulley 17 forms another inclined surface surrounding the feed inlet 6. The first conveyor belt 14 between the second pulley 12 and the third pulley 13 and the second conveyor belt 19 between the fifth pulley 17 and the sixth pulley 18 form a first conveying channel 5.

[0093] As shown in Figures 8, 11 and 12: the adjacent feeding units and the grading units are symmetrically arranged, and the first conveying channels 5 in each feeding unit are parallel to each other, and the second conveying channels 9 in each grading unit are parallel to each other.

[0094] Both the feeding unit and the grading unit are provided with a mounting base. The mounting base is located above a plurality of pulleys and is rotatably connected to the mounting base. The oscillating blade 2 is located on the top of the mounting base and is provided with a rotating end 21, a free end 22 and a driven member 23. The rotating end 21 is rotatably connected to the mounting base. The free end 22 extends out of the mounting base in a direction away from the mounting base. The driven member 23 is located between the free end 22 and the rotating end 21 on the oscillating blade 2.

[0095] Both the second pulley 12 and the fifth pulley 17 are provided with eccentric wheel portions. The oscillating blade 2 above the first feeding assembly abuts against the eccentric wheel portions on the two adjacent and synchronously rotating second pulleys 12 through the driven member 23. The oscillating blade 2 above the second feeding assembly abuts against the eccentric wheel portions on the two adjacent and synchronously rotating fifth pulleys 17 through the driven member 23. The oscillation drive of the oscillating blade 2 is completed by the rotation of the second pulley 12 and the fifth pulley 17 respectively.

[0096] In this embodiment, it is necessary to further explain that, taking the second pulley 12 as an example above, the driven member 23 needs to abut against the eccentric wheel portion on the two symmetrically arranged second pulleys 12, and these two second pulleys 12 also need to abut against their respective corresponding first conveyor belts 14. That is to say, the driven member 23 is located between the two first feeding components 37, but these two second pulleys 12 need to abut against their respective first conveyor belts 14 within their respective first feeding components 3. Therefore, in order to ensure that the eccentric wheel portion can complete the above connection, in this embodiment, the abutment position of the eccentric wheel portion and the driven member 23 is set at a different height from the abutment position of the second pulley and the first conveyor belt 14. That is, in this embodiment, the abutment position of the eccentric wheel portion and the driven member 23 is set above the abutment position of the second pulley and the first conveyor belt 14.

[0097] The free end 22 is provided with a comb leaf portion 42. One end of the comb leaf portion 42 is connected to the swing end, and the other end is inclined downward in the direction away from the base. The width of the comb leaf portion 42 gradually decreases along the inclined direction.

[0098] In this embodiment, the leaf comb 42 is designed such that, firstly, the gradually decreasing width in the vertical direction allows it to better reach into the gaps in the tea leaves, improving the combing efficiency of the oscillating leaf comb 2 on the tea leaves, while the decreasing width in the horizontal direction allows the tea leaves to enter the first conveying channel 5 more smoothly.

[0099] As shown in Figure 9: the front end of the first feeding component 3 is located on the side and rear of the front end of the second feeding component 4; the horizontal position of the rotation center of the second pulley 12 is located between the rotation center of the fifth pulley 17 and the rotation center of the sixth pulley 18; the horizontal position of the rotation center of the first pulley 11 is located between the rotation center of the fourth pulley 16 and the rotation center of the fifth pulley 17, so as to form a feed inlet 6 that is wider at the front and narrower at the back.

[0100] The third pulley 13 is located in a forward or rearward position on the side of the sixth pulley 18, so that the rearward section of the first conveyor belt 14 and the second conveyor belt 19 are offset, forming a first discharge port 24 connected to the rear end of the first conveying channel 5.

[0101] In this embodiment, as can be seen from the above, the three surfaces of the feed inlet 6 are: the first inclined surface 40 is a section of the first conveyor belt 14 inclined between the first pulley 11 and the second pulley 12; the second inclined surface 41 is a section of the second conveyor belt 19 inclined between the fourth pulley 16 and the fifth pulley 17; and the third surface 44 is the second pulley 12 between the second pulley 12 and the fifth pulley 17.

[0102] In this application, it is necessary to further explain that the included angle between the two inclined surfaces on the feed inlet 6 is in the range of 30° to 90°, and the second pulley 12 and the fifth pulley 17 can move back and forth to adjust the opening angle of the discharge port and the length of the conveying channel.

[0103] The second pulley 12 and the fifth pulley 17 can move left and right to adjust the opening angle of the discharge port and the width of the first conveying channel 5.

[0104] As shown in Figures 5-9: The third feeding assembly 7 includes a seventh pulley 25, an eighth pulley 26, a third conveyor belt 27, and a third mounting base 28. The seventh pulley 25 is located at the front end of the third mounting base 28 and is positioned above the third pulley 13. The third pulley 13 rotates coaxially with the seventh pulley 25. The eighth pulley 26 is located at the rear end of the third mounting base 28. The third conveyor belt 27 is sleeved around the seventh pulley 25 and the eighth pulley 26.

[0105] The fourth feeding assembly 8 includes a ninth pulley 29, a tenth pulley 30, a fourth conveyor belt 31, and a fourth mounting base 32. The ninth pulley 29 is located at the front end of the fourth mounting base 32 and is positioned above the fourth pulley 16. The fourth pulley 16 rotates coaxially with the ninth pulley 29. The tenth pulley 30 is located at the rear end of the fourth mounting base 32. The fourth conveyor belt 31 is sleeved around the ninth pulley 29 and the tenth pulley 30.

[0106] A second conveying channel 9 is formed between the third conveyor belt 27 and the fourth conveyor belt 31;

[0107] The eighth pulley 26 is located at a position slightly forward or slightly backward on the side of the tenth pulley 30, so that the third conveyor belt 27 is offset from the rear section of the fourth conveyor belt 31, forming a second discharge port 33 connected to the rear end of the second conveying channel 9.

[0108] Both shorter and longer tea leaves are held and transported by the first conveyor belt 14 in the first feeding assembly 3 and the second conveyor belt 19 in the second feeding assembly 4. When they reach the end of the feeding unit, the shorter tea leaves fall to a preset position, while the longer tea leaves enter the second transport channel and are continuously transported by the grading unit to another preset position, thus achieving the sieving of the tea leaves.

[0109] In this embodiment, it can be understood that the upper end of the pulley is set on the mounting base, and each feeding unit is provided with a mounting base.

[0110] In this embodiment, for ease of production and assembly, all conveying components are set to the same model (same size and shape). Therefore, in this embodiment, since the front end of the conveying unit is set to be behind the front end of the first conveying component, the front end of the feeding unit, the rear end of the feeding unit, the front end of the grading unit, and the rear end of the grading unit are all set synchronously.

[0111] As shown in Figure 2: the discharge unit includes at least:

[0112] The first receiving port 34 is located below the first feeding component 3 and extends horizontally away from the swing leaf-picking component 2. It is used to receive shorter tea leaves held by the first feeding component 3 as a first preset position.

[0113] The second receiving port 35 is located above the first receiving port 34 and below the second feeding component 4. There is a falling space between the first feeding component 34 and the second receiving port 35. The shorter tea leaves fall into the first receiving port 34 through the falling space, and the second receiving port 35 serves as a second preset position to receive the longer tea leaves.

[0114] In this embodiment, the second receiving port 35 is similar to the first receiving port 34, and also extends horizontally. When the shorter tea leaves are separated from the first conveying channel 5, they fall into the first receiving port 34 from the falling space, while the longer tea leaves are continuously transported by the second feeding component 4 to the top of the second receiving port 35. When the longer tea leaves are separated from the second conveying channel 9, they will fall into the second receiving port 35, and the sieved tea leaves will be collected.

[0115] As shown in Figure 10: A cutting assembly is provided below the mounting base, the cutting assembly including:

[0116] The device includes a first blade holder 36 and a second blade holder 37. The first blade holder 36 rests against the second blade holder 37. The first blade holder 36 is evenly provided with a plurality of first blade teeth 38, and the second blade holder 37 is evenly provided with a plurality of second blade teeth 39. The first blade teeth 38 and the second blade teeth 39 are spaced apart in the horizontal direction. The first blade holder 36 and the second blade holder 37 can slide relative to each other, so that the spaced first blade teeth 38 and the second blade teeth 39 can overlap in the vertical direction or exchange positions in the horizontal direction to complete the cutting of tea leaves.

[0117] As shown in Figures 1 and 2, the feeding unit is inclined on the main body 1, that is, it is inclined from the front end to the rear end, and the angle between the feeding unit and the plane where the bottom of the main body 1 is located is 5° to 35°.

[0118] As shown in Figures 3-4: A bud-preserving plate 43 is provided below the feeding mechanism. The bud-preserving plate 43 is located at the bottom of the feeding mechanism, below the swing leaf-picking piece 2, and in front of the cutting assembly, so that the cutting assembly only cuts the tea leaves at the feed inlet 6, thereby controlling the length of the cut tea leaves within a controllable range.

[0119] As shown in Figure 4: In this embodiment, the first mounting base and the third mounting base are integrally formed, and the second mounting base and the fourth mounting base are integrally formed. The first mounting base is located at the upper end of the first feeding assembly, the third mounting base is located at the lower end of the third feeding assembly, the second mounting base is located at the upper end of the second feeding assembly, and the fourth feeding assembly is located at the lower end of the fourth feeding assembly.

[0120] Example 2:

[0121] The difference between this embodiment and Embodiment 1 is as follows:

[0122] As shown in Figure 13: the adjacent feeding units and the grading units are symmetrically arranged, and the first conveying channels 5 in each feeding unit are parallel to each other, and the second conveying channels 9 in each grading unit are parallel to each other;

[0123] Both the feeding unit and the grading unit are provided with a mounting base. The mounting base is located above a plurality of pulleys and is rotatably connected to the mounting base. The oscillating blade 2 is located on the top of the mounting base and is provided with a rotating end 21, a free end 22 and a driven member 23. The rotating end 21 is rotatably connected to the mounting base. The free end 22 extends out of the mounting base in a direction away from the mounting base. The driven member 23 is located between the free end 22 and the rotating end 21 on the oscillating blade 2.

[0124] Both the second pulley 12 and the fifth pulley 17 are provided with eccentric wheel portions. The mounting base is also provided with an elastic element 47. The swinging blade 2 above the first feeding assembly abuts against the eccentric wheel portion on the second pulley 12 through the driven member 23. The elastic element 47 on the mounting base corresponding to the first feeding assembly 3 abuts against the driven member 23 on the side away from the second pulley 12. The swinging blade 2 above the second feeding assembly abuts against the eccentric wheel portion on the fifth pulley 17 through the driven member 23. The elastic element 47 on the mounting base corresponding to the second feeding assembly 4 abuts against the driven member 23 on the side away from the fifth pulley 17. The swinging drive of the swinging blade 2 is completed by the rotation of the second pulley 12 and the fifth pulley 17 respectively. It should be noted that the eccentric wheel portion moves with its respective pulley.

[0125] In this embodiment, when the second pulley 12 or the fifth pulley 17 rotates, when the most protruding part of the eccentric wheel portion on it abuts the follower 23 to a distance, no other eccentric wheel portion on the second pulley 12 or the fifth pulley 17 abuts the follower back to its original position. This prevents other parts of the eccentric wheel portion on the second pulley 12 or the fifth pulley 17 from abutting the follower 23. The elastic element 47 is specifically a spring. The spring can abut the follower 23, which has been abutted away from the second pulley 12 or the fifth pulley 17, towards the pulley. This ensures that the follower 23 can always abut against the eccentric wheel portion on the pulley. The cooperation between the eccentric wheel portion and the elastic element 47 allows the oscillating blade 2 to swing as the eccentric wheel portion rotates.

[0126] Example 3:

[0127] The difference between this embodiment and Embodiment 1 is as follows:

[0128] As shown in Figure 14, the first circular blade 45 and the second circular blade 46 are arranged such that their horizontal contours are tangent, and the order is first circular blade 45, then second circular blade 46. The connection between groups (smallest cycle units) in the periodic cyclic distribution is also tangent; that is, the right side of the first circular blade 45 is tangent to the left side of the second circular blade 46, and the right side of the second circular blade 46 is tangent to the left side of the first circular blade 45 in the next "cycle group". In this embodiment, the arrangement of the two circular blades can also be understood as follows: each first circular blade 45 is tangent to the second circular blade 46 on both sides, and each second circular blade 46 is tangent to the first circular blade 45 on both sides. The tangent points of the two circular blades are located directly below the first conveying channel 5.

[0129] Example 4:

[0130] The difference between this embodiment and Embodiment 1 is as follows:

[0131] As shown in Figure 15: In this embodiment, in the smallest unit group of the cyclic distribution, one first circular blade 45 and two second circular blades 46 are sequentially arranged. In the vertical direction, the first circular blade 45 sits on a plane between the planes where the two second circular blades 46 are located, and the first circular blade 45 and the two second circular blades 46 have overlapping parts. The connection between the smallest unit groups arranged cyclically in each periodic distribution also needs to meet the above conditions. That is to say, taking two groups as an example, from left to right, there is one first circular blade 45 (in the first group), two second circular blades 46 (in the first group), one first circular blade 45 (in the second group), and two second circular blades 46. The two circular blades 46 (in the second group) and the two circular blades in the first group and the first circular blade 45 in the second group also need to satisfy the following in the vertical direction: "The first circular blade 45 sits on the plane between the planes where the two second circular blades 46 are located, and the first circular blade 45 and the two second circular blades 46 have overlapping parts". Therefore, the blade arrangement in this embodiment can be summarized as follows: each first circular blade 45 has two second circular blades 46 on both sides, and they have overlapping parts. It can also be understood that each pair of second circular blades 46 has a first circular blade 45 on both sides, and there is an overlapping part between the second circular blades 46 and the first circular blade 45.

[0132] Example 5:

[0133] As shown in Figure 16: In this embodiment, the smallest unit group of the periodic arrangement includes only one first circular blade 45 and one second circular blade 46. There is an overlap between the first circular blade 45 and the second circular blade 46 in the vertical direction. The overall blade arrangement can be understood as follows: each first circular blade 45 has a second circular blade 46 on both sides, and there is an overlap between the first circular blade 45 and the second circular blade 46 in the vertical direction. Alternatively, it can be understood as each second circular blade 46 has a first circular blade 45 on both sides, and there is an overlap between the first circular blade 45 and the second circular blade 46 in the vertical direction.

[0134] Example 6:

[0135] In this embodiment, the support frame is located below the cutting assembly (blade holder and circular blade), and the end of the bud-preserving plate below each mounting base 4 extends away from the support frame to the front of the circular blade. This can be understood as the bud-preserving plate extending upwards and tilting towards the front of the overall device, extending to the front and above the circular blade, and located below the leaf-picking section 13.

[0136] Example 7:

[0137] In this embodiment, the swing limiting member 14 is disposed on the upper end surface of the mounting base 4 and is located on both sides of the swing deflector 2, and is used to limit the swing angle of the swing deflector 2.

[0138] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0139] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stepped conveyor type tea harvesting and grading integrated machine, characterized in that, The device includes a main body (1), on which at least one feeding mechanism is provided. The front end of the feeding mechanism is provided with a swing leaf-picking component (2), and the rear end of the feeding mechanism is connected to a discharge unit. A cutting component is provided below the feeding mechanism. The swing leaf-picking component (2) swings to assist the tea leaves into the feeding mechanism. The feeding mechanism clamps and transports the tea leaves to the discharge unit. Before reaching the discharge unit, the clamped and transported tea leaves are cut by the cutting component.

2. The stepped conveyor type tea harvesting and grading integrated machine according to claim 1, characterized in that, The feeding mechanism includes at least one feeding unit and a grading unit, the grading unit being positioned above and rear of the feeding unit; the feeding unit includes a first feeding component (3) and a second feeding component (4), a first conveying channel (5) and a feed inlet (6) being formed between the first feeding component (3) and the second feeding component (4), the feed inlet (6) gradually narrowing from the front end of the feeding unit to the first conveying channel (5), and the feed inlet (6) being formed by at least two inclined surfaces; the grading unit is positioned one-to-one with the feeding unit, the grading unit including a third feeding component (7) and a fourth feeding component (8), the third feeding component (7) being positioned above the first feeding unit. The fourth feeding component (8) is located above and behind the second feeding component (4), and a second conveying channel (9) is formed between the third feeding component (7) and the fourth feeding component (8). The tea leaves are gathered into the first conveying channel (5) from the inlet (6). The feeding unit clamps and transports the tea leaves through the first feeding component (3) and the second feeding component (4). The shorter tea leaves fall from the rear end of the first conveying channel (5) to the first preset position in the discharge unit, while the longer tea leaves are continuously clamped and transported along the second conveying channel (9) to the second preset position in the discharge unit, thereby realizing the grading of tea leaves of different lengths.

3. The stepped conveyor type tea harvesting and grading integrated machine according to claim 2, characterized in that, Each feeding assembly includes a conveyor belt and multiple pulleys. The conveyor belt is sleeved around several pulleys to form a loop. Several protrusions (10) are provided on the outer side wall of the pulleys to prevent the conveyor belt from falling off the pulleys.

4. The stepped conveyor type tea harvesting and grading integrated machine according to claim 3, characterized in that, The first feeding assembly (3) includes: a first pulley (11), a second pulley (12), a third pulley (13), a first conveyor belt (14), and a first mounting base (15). The first pulley (11) is located at the front end of the first mounting base (15), the third pulley (13) is located at the rear end of the first mounting base (15), the second pulley (12) is located between the first pulley (11) and the third pulley (13), and the first conveyor belt (14) is sleeved on the first pulley (11), the second pulley (12), and the third pulley (13). In addition, the distance between the third pulley (13) and the second pulley (12) is greater than the distance between the first pulley (11) and the second pulley (12). The distances from the second pulley (12) and the third pulley (13) to the first conveying channel (5) are the same, and this distance is less than the distance from the first pulley (11) to the first conveying channel (5). The second feeding assembly (4) includes a fourth pulley (16), a fifth pulley (17), a sixth pulley (18), a second conveyor belt (19), and a second mounting base (20). The fourth pulley (16) is disposed on the second mounting base. The sixth pulley (18) is located at the rear end of the second mounting base (20) near the front end of the base (20). The fifth pulley (17) is located between the fourth pulley (16) and the sixth pulley (18). The second conveyor belt (19) is sleeved over the fourth pulley (16), the fifth pulley (17), and the sixth pulley (18). The distance between the sixth pulley (18) and the fifth pulley (17) is greater than the distance between the fourth pulley (16) and the fifth pulley (17). The fifth pulley (17) and the sixth pulley (18) are connected to the first conveying channel ( The distances between the first and second pulleys (11 and 12) are the same, and this distance is less than the distance from the fourth pulley (16) to the first conveying channel (5); the conveyor belt between the first pulley (11) and the second pulley (12) forms an inclined plane surrounding the feed inlet (6), the conveyor belt between the fourth pulley (16) and the fifth pulley (17) forms another inclined plane surrounding the feed inlet (6), and the first conveyor belt (14) between the second pulley (12) and the third pulley (13) and the second conveyor belt (19) between the fifth pulley (17) and the sixth pulley (18) form the first conveying channel (5).

5. A stepped conveyor type tea harvesting and grading integrated machine according to claim 4, characterized in that, The adjacent feeding units and the grading units are symmetrically arranged, and the first conveying channels (5) in each feeding unit are parallel to each other, and the second conveying channels (9) in each grading unit are parallel to each other; each feeding unit and grading unit is provided with a mounting base, which is placed on top of several pulleys, and the pulleys are rotatably connected to the mounting base; the oscillating blade (2) is placed on the top of the mounting base, and the oscillating blade (2) is provided with a rotating end (21), a free end (22) and a driven member (23); the rotating end (21) is rotatably connected to the mounting base, the free end (22) extends away from the mounting base, and the driven member (23) is located between the free end (22) and the rotating end (21) on the oscillating blade (2); the second pulley (12) Both the first feeding assembly (3) and the fifth pulley (17) are provided with eccentric wheel portions. The mounting base is also provided with elastic elements. The swinging blade (2) above the first feeding assembly (3) abuts against the eccentric wheel portion on the second pulley (12) through the driven member (23). The elastic element on the mounting base corresponding to the first feeding assembly (3) abuts against the driven member (23) on the side away from the second pulley (12). The swinging blade (2) above the second feeding assembly (4) abuts against the eccentric wheel portion on the fifth pulley (17) through the driven member (23). The elastic element on the mounting base corresponding to the second feeding assembly (4) abuts against the driven member (23) on the side away from the fifth pulley (17). The swinging drive of the swinging blade (2) is completed by the rotation of the second pulley (12) and the fifth pulley (17).

6. A stepped conveyor type tea harvesting and grading integrated machine according to claim 4, characterized in that, The adjacent feeding units and the grading units are symmetrically arranged, and the first conveying channels (5) in each feeding unit are parallel to each other, and the second conveying channels (9) in each grading unit are parallel to each other; each feeding unit and grading unit is provided with a mounting base, which is located above or below a plurality of pulleys, and the pulleys are rotatably connected to the mounting base. The oscillating blade (2) is located on the top of the mounting base, and the oscillating blade (2) is provided with a rotating end (21), a free end (22) and a driven end (23). The rotating end (21) is rotatably connected to the mounting base, and the free end (22) extends out of the mounting base in a direction away from the mounting base. The moving part (23) is located between the free end (22) and the rotating end (21) of the swinging blade part (2); the second pulley (12) and the fifth pulley (17) are both provided with eccentric wheel parts. The swinging blade part (2) above the first feeding assembly (3) abuts against the eccentric wheel parts on the two adjacent and synchronously rotating second pulleys (12) through the driven part (23). The swinging blade part (2) above the second feeding assembly (4) abuts against the eccentric wheel parts on the two adjacent and synchronously rotating fifth pulleys (17) through the driven part (23). The swinging drive of the swinging blade part (2) is completed by the rotation of the second pulley (12) and the fifth pulley (17).

7. A stepped conveyor type tea harvesting and grading integrated machine according to claim 5 or 6, characterized in that, The front end of the first feeding component (3) is located on the side of the front end of the second feeding component (4) and the third pulley (13) is located on the side of the sixth pulley (18) and the front or rear position, so that the first conveyor belt (14) and the rear section of the second conveyor belt (19) are staggered to form a first discharge port (24) connected to the rear end of the first conveying channel (5).

8. A stepped conveyor type tea harvesting and grading integrated machine according to claim 7, characterized in that, The third feeding assembly (7) includes a seventh pulley (25), an eighth pulley (26), a third conveyor belt (27), and a third mounting base (28). The seventh pulley (25) is located at the front end of the third mounting base (28) and is positioned above the third pulley (13). The third pulley (13) rotates coaxially with the seventh pulley (25). The eighth pulley (26) is located at the rear end of the third mounting base (28). The third conveyor belt (27) is sleeved around the seventh pulley (25) and the eighth pulley (26). The fourth feeding assembly (8) includes a ninth pulley (29), a tenth pulley (30), a fourth conveyor belt (31), and a fourth mounting base (32). The ninth pulley (29)... The ninth pulley (29) is located at the front end of the fourth mounting base (32) and above the fourth pulley (16). The fourth pulley (16) rotates coaxially with the ninth pulley (29). The tenth pulley (30) is located at the rear end of the fourth mounting base (32). The fourth conveyor belt (31) is sleeved on the ninth pulley (29) and the tenth pulley (30). A second conveying channel (9) is formed between the third conveyor belt (27) and the fourth conveyor belt (32). The eighth pulley (26) is located at a forward or rearward position on the side of the tenth pulley (30), so that the rearward section of the third conveyor belt (27) and the fourth conveyor belt (32) are offset, forming a second discharge port (33) connected to the rear end of the second conveying channel (9).

9. A stepped conveyor type tea harvesting and grading integrated machine according to claim 8, characterized in that, The discharge unit includes at least: a first receiving port (34), which is located below the first feeding component (3) and extends horizontally away from the swing leaf-picking component (6) to receive shorter tea leaves held by the first feeding component (3) as a first preset position; and a second receiving port (35), which is located above the first receiving port (34) and below the second feeding component. There is a falling space between the first feeding component (3) and the second receiving port (35), through which the shorter tea leaves fall to the first receiving port (34), and the second receiving port (35) serves as a second preset position to receive longer tea leaves.

10. A stepped conveyor type tea harvesting and grading integrated machine according to claim 9, characterized in that, A cutting assembly is provided below the mounting base. The cutting assembly includes a first blade holder (36) and a second blade holder (37). The first blade holder (36) abuts against the second blade holder (37). A plurality of first blade teeth (38) are evenly arranged on the first blade holder (36), and a plurality of second blade teeth (39) are evenly arranged on the second blade holder (37). The first blade teeth (38) and the second blade teeth (39) are spaced apart in the horizontal direction. The first blade holder (36) and the second blade holder (37) can slide relative to each other, so that the spaced first blade teeth (38) and the second blade teeth (39) overlap in the vertical direction or exchange positions in the horizontal direction to complete the cutting of tea leaves.

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