A processing structure and harvester

Abstract

The application relates to the technical field of agricultural equipment, and provides a processing structure and a harvester, wherein the processing structure is installed on a harvester body at a discharge port of the harvester, and comprises a moving knife roller, a plurality of moving knife blades, a fixed knife seat and a plurality of fixed knife blades. One end of the fixed knife blades is configured to be slidable relative to the fixed knife seat to extend out of a containing cavity in a use position and to retreat into the containing cavity in a retreat position. When the forage needs to be cut only and the forage needs to be harvested and discharged through a forage discharge port, an acting force is applied to the fixed knife blades, the fixed knife blades are slid along the fixed knife seat, one end of the fixed knife blades extending out of the containing cavity retreats into the containing cavity, so that the fixed knife blades are switched from the use position to the retreat position, at this time, when the moving knife roller drives the moving knife blades to rotate, any moving knife blade can avoid the gap between the fixed knife blades, and the forage is discharged along the discharge port of the harvester. The processing structure can save time and labor when switching between the cutting state and the discharging state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural equipment, in particular to a processing structure and a harvester. BACKGROUND

[0002] In recent years, the agricultural mechanization level in China is continuously improved. When harvesting crops such as wheat and rice, different regions have different needs for the harvested wheat straw, rice straw or other forage. Some need to be crushed, and some do not need to be crushed and can be directly discharged. Therefore, a straw discharge wheel device is designed to ensure straw discharge without damaging the straw.

[0003] When the harvester switches from cutting grass to discharging grass, the entire cutter needs to be removed, the straw discharge wheel device with a toothed rod needs to be replaced, and finally the belt and pulley in the cutter transmission structure need to be removed from the harvester body. Conversely, when switching from discharging grass to cutting grass, the straw discharge wheel needs to be removed from the harvester body, the cutter device needs to be installed on the harvester body as a whole, and finally the corresponding belt and pulley in the transmission structure need to be installed. In actual use, two sets of corresponding equipment need to be produced. This replacement method not only consumes production materials, but also requires professional personnel to operate during the replacement process, takes a long time to replace, and frequently exchanges the cutting and discharging devices, which is time-consuming and labor-intensive, and is not convenient for actual use. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defects in the prior art that when the harvester switches from cutting grass to discharging grass, the entire cutter needs to be removed, the straw discharge wheel device with a toothed rod needs to be replaced, and finally the belt and pulley in the cutter transmission structure need to be removed from the harvester body. Conversely, when switching from discharging grass to cutting grass, the straw discharge wheel needs to be removed from the harvester body, the cutter device needs to be installed on the harvester body as a whole, and finally the corresponding belt and pulley in the transmission structure need to be installed. In actual use, two sets of corresponding equipment need to be produced. This replacement method not only consumes production materials, but also requires professional personnel to operate during the replacement process, takes a long time to replace, and frequently exchanges the cutting and discharging devices, which is time-consuming and labor-intensive, and is not convenient for actual use. Thus, a processing structure and a harvester are provided.

[0005] A processing structure is installed on a harvester body at a discharge port of the harvester, and includes a cutter roller rotatably arranged on the harvester body, a plurality of cutter blades arranged on the cutter roller, a cutter seat arranged on the harvester body opposite to the cutter roller, and a plurality of cutter blades in sliding connection with the cutter seat, the cutter seat including a receiving cavity, one end of the cutter blade being configured to slide relative to the cutter seat to extend out of the receiving cavity in a use position and to retreat into the receiving cavity in a retreat position; the processing structure has a cutting state in which the cutter roller is driven to rotate when the cutter blades are in the use position, the cutter roller drives the cutter blades to pass through gaps between the cutter blades to cut the forage, and a discharging state in which any one of the cutter blades is switched from the use position to the retreat position by an external force, the cutter roller drives the cutter blades to avoid the gaps between the cutter blades to discharge the forage.

[0006] Optionally, in the processing structure, one of the cutter seat and the cutter blade is provided with a sliding part, and the other is provided with a sliding matching part matched with the sliding part; one end of the cutter blade is adapted to be inserted into the receiving cavity, and the sliding part is adapted to slide along the sliding matching part when the cutter blade is switched from the use position to the retreat position.

[0007] Optionally, in the processing structure, the sliding part is a sliding block, and the sliding matching part is a sliding groove.

[0008] Optionally, in the processing structure, the processing structure further includes a mounting assembly, the mounting assembly includes a cutter mounting frame arranged in the receiving cavity and connected with the cutter seat, one of the sliding part and the sliding matching part is arranged on the cutter mounting frame, and the other is arranged on the cutter blade.

[0009] Optionally, in the processing structure, the cutter mounting frame includes two oppositely arranged cutter mounting plates, two ends of any one of the cutter mounting plates abut two ends of the cutter seat, and the sliding groove is formed in the two oppositely arranged cutter mounting plates.

[0010] Optionally, in the processing structure, the mounting assembly further includes a positioning shaft, a first positioning hole is formed in any one of the cutter blades, and a second positioning hole and a third positioning hole are formed in the harvester body.

[0011] When all the cutter blades are in the retreat position, the positioning shaft is adapted to pass through the first positioning hole and the second positioning hole to mount the cutter blades on the harvester body.

[0012] In all of the fixed blades are in the use position, the positioning shaft is adapted to pass through the first positioning hole and the third positioning hole to mount the fixed blades on the harvester body.

[0013] Optionally, the processing structure further comprises a driving pulley and a transition pulley, both of which are configured to be connected by a transmission belt, and the hub aperture of the driving pulley is the same as that of the transition pulley, and the transmission ratio of the driving pulley and the transition pulley is 4:1; when the processing structure is in the cutting state, the driving pulley is connected with the cutter roller, and when the processing structure is in the discharging state, the transition pulley is connected with the cutter roller.

[0014] Optionally, the processing structure further comprises a tensioning assembly, which comprises a tensioning roller and a tensioning driving member, the tensioning roller is adapted to abut against the side surface of the transmission belt, one end of the tensioning driving member is rotationally connected with the harvester body, and the other end is connected with the tensioning roller; under the action of an external force, the tensioning driving member is adapted to rotate to drive the tensioning roller to relax the transmission belt, so as to interchange the driving pulley and the transition pulley.

[0015] Optionally, the processing structure further comprises a tensioning assembly, which comprises a tensioning roller and a tensioning driving member, the tensioning roller is adapted to abut against the side surface of the transmission belt, one end of the tensioning driving member is rotationally connected with the harvester body, and the other end is connected with the tensioning roller; under the action of an external force, the tensioning driving member is adapted to rotate to drive the tensioning roller to relax the transmission belt, so as to interchange the driving pulley and the transition pulley.

[0016] Optionally, the processing structure further comprises a tensioning assembly, which comprises a tensioning roller and a tensioning driving member, the tensioning roller is adapted to abut against the side surface of the transmission belt, one end of the tensioning driving member is rotationally connected with the harvester body, and the other end is connected with the tensioning roller; under the action of an external force, the tensioning driving member is adapted to rotate to drive the tensioning roller to relax the transmission belt, so as to interchange the driving pulley and the transition pulley.

[0017] A harvester comprises a processing structure, which is the processing structure according to any one of the preceding items.

[0018] The technical scheme of the present application has the following advantages:

[0019] 1. The processing structure provided by the present application is installed on the harvester body corresponding to the discharge port of the harvester, and comprises: a cutter roller which is rotationally arranged on the harvester body; a plurality of cutter blades which are arranged on the cutter roller; a fixed blade seat which is arranged on the harvester body relative to the cutter roller; and a plurality of fixed blades which are slidably connected with the fixed blade seat, the fixed blade seat comprising a receiving cavity, one end of the fixed blade being configured to slide relative to the fixed blade seat to extend out of the use position of the receiving cavity and retreat into the avoiding position of the receiving cavity; the processing structure has a cutting state in which the fixed blades are in the use position, the cutter roller is driven to rotate, the cutter roller drives the cutter blades to pass through the gap between the fixed blades to cut the forage, and a discharging state in which the fixed blades are switched from the use position to the avoiding position under the action of an external force, the cutter roller drives the cutter blades to avoid the gap between the fixed blades to discharge the forage.

[0020] The processing structure of the structure is arranged at the discharge port of the harvester body, the fixed blade is slidably connected with the fixed blade seat, and one end of the fixed blade seat is configured to be slidable relative to the fixed blade seat to extend out of the accommodation cavity in the use position and to retreat into the accommodation cavity in the avoidance position, when the grass needs to be chopped, the end of the fixed blade extends out of the accommodation cavity, the cutter roller drives the cutter blade to pass through the gap between the fixed blades to chop the grass, when the grass does not need to be chopped and only needs to be harvested and discharged through the discharge port, an acting force is applied to the fixed blade to slide the fixed blade along the fixed blade seat, so that the end of the fixed blade extending out of the accommodation cavity retreats into the accommodation cavity, so that the fixed blade is switched from the use position to the avoidance position, at this time, when the cutter roller drives the cutter blade to rotate, any cutter blade avoids the gap between the fixed blades, and at the same time, the grass is discharged along the discharge port of the harvester, when the processing structure is switched between the chopping state and the discharging state, the cutter roller, the cutter blade, and the fixed blade seat and the plurality of fixed blades of the processing structure do not need to be removed from the harvester body, and then the discharge wheel is installed on the discharge port, which is convenient to operate, saves a lot of time, improves the harvesting efficiency, saves time and effort, and does not need professional personnel to replace two sets of equipment, has high practicality, wide applicability, and overcomes the defects in the prior art that when the harvester is switched from the grass chopping requirement to the grass discharging requirement, the entire chopping device needs to be removed, the discharge wheel with teeth is replaced, and finally the belt and the pulley in the transmission structure of the chopping device are removed from the harvester body, and vice versa, the discharge wheel is removed from the harvester body, the entire chopping device is installed on the harvester body, and finally the corresponding belt and pulley in the transmission structure are installed, and in actual use, two corresponding sets of equipment need to be produced, which not only consumes production materials, but also requires professional personnel to operate during the replacement process, and the replacement time is long, the chopping and discharging devices are frequently exchanged, time and effort are wasted, and the actual use is inconvenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 The overall structure diagram of the processing structure provided in the first embodiment of the present application is shown in the figure.

[0023] Figure 2 The structure diagram of the fixed blade in the use position is shown in the figure.

[0024] Figure 3 This is a schematic diagram of the structure when the fixed blade is in the avoidance position;

[0025] Figure 4 This is a schematic diagram showing the positional structure of the tensioning assembly, drive pulley, and transition pulley.

[0026] Figure 5 A schematic diagram showing the position of the fixed blade at the discharge port of the harvester body;

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Processing structure; 200. Discharge port; 300. Harvester body;

[0029] 101. Moving cutter roller; 102. Moving blade; 103. Fixed cutter holder; 1031. Receiving cavity;

[0030] 104. Fixed blade; 1041. First positioning hole;

[0031] 105. Installation components; 1051. First positioning mounting plate; 1052. Second positioning mounting plate;

[0032] 106. Rotary shaft; 107. Handle;

[0033] 108. Drive pulley; 109. Transition pulley; 110. First tension roller;

[0034] 111. Tightening / Loosening drive component; 1111. Tightening / Loosening connection part; 1112. Tightening / Loosening drive part; Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0039] Embodiment 1

[0040] This embodiment describes a processing structure 100, which is installed on a harvester body 300 at the discharge port 200 of the harvester, and can shred the forage and discharge the forage, and can meet different processing requirements of the forage without disassembling the structure, see Figures 1-5 The processing structure 100 includes a cutter roller 101, a plurality of cutter blades 102, a cutter seat 103, and a plurality of cutter plates 104, wherein the cutter roller 101 is rotatably arranged on the harvester body 300, a plurality of cutter blades 102 are arranged on the cutter roller 101, the cutter seat 103 is arranged on the harvester body 300 relative to the cutter roller 101, and each cutter plate 104 is in sliding connection with the cutter seat 103.

[0041] The cutter seat includes a receiving cavity 1031, and one end of the cutter plate 104 is configured to be slidable relative to the cutter seat 103 to extend out of the receiving cavity 1031 in a use position and to retreat into the receiving cavity 1031 in a retreat position.

[0042] In actual use, the processing structure 100 has a cutting state and a discharging state, wherein when the cutter plate 104 is in the use position, the cutter roller 101 is rotated by the driving force, the cutter roller 101 drives the cutter blades 102 to pass through the gap between the cutter plates 104, so that the processing structure 100 has a cutting state of shredding the forage, and the cutter plate 104 is switched from the use position to the retreat position by external force, so that the cutter roller 101 drives the cutter blades 102 to avoid the gap between the cutter plates 104, so that the processing structure 100 has a discharging state of directly discharging the forage.

[0043] The processing structure 100 is installed at the discharge port 200 of the harvester body 300. A fixed blade 104 is slidably connected to a fixed blade holder 103, with one end of the fixed blade holder 103 configured to slide relative to the fixed blade holder 103 to extend out of the receiving cavity 1031 in a working position and to retract into the receiving cavity 1031 in a avoidance position. When it is necessary to chop the forage, one end of the fixed blade 104 extends out of the receiving cavity 1031, and the moving blade roller 101 drives the moving blade 102 through the gap between the fixed blades 104 to chop the forage. When it is not necessary to chop the forage and only needs to be harvested and discharged through the discharge port, a force is applied to the fixed blade 104, causing the fixed blade 104 to slide along the fixed blade holder 103, so that the fixed blade 104 extends out of the receiving cavity 1031. One end retracts into the receiving cavity 1031, so that the fixed blade 104 switches from the use position to the avoidance position. At this time, when the moving blade roller 101 drives the moving blade 102 to rotate, any moving blade 102 will avoid the gap between the fixed blades 104, and at the same time, the grass is discharged along the discharge port 200 of the harvester. When the processing structure 100 switches between the cutting state and the discharge state, it avoids the need to remove the moving blade roller 101, moving blade 102, fixed blade holder 103 and multiple fixed blades 104 of the processing structure 100 from the harvester body 300 and then install the grass discharge wheel to the discharge port 200. The operation is convenient, saves a lot of time, improves harvesting efficiency, and saves time and labor. It does not require professional personnel to perform the operation of changing two sets of equipment. It is highly practical and widely applicable.

[0044] In this embodiment, in order to achieve the effect of slidable connection between the fixed blade 104 and the fixed blade holder 103, a sliding part can be provided on one of the fixed blade holder 103 and the fixed blade 104, and a sliding fit that cooperates with the sliding part can be provided on the other. One end of any fixed blade 104 is suitable for insertion into the receiving cavity 1031. When the fixed blade 104 is switched from the use position to the avoidance position, the sliding part is suitable for sliding along the sliding fit.

[0045] In actual use, the sliding part is a slider and the sliding mating part is a groove. The slider can be set on both sides of the fixed blade 104 and the groove can be set on the fixed blade holder 103.

[0046] In order to make the sliding of the fixed blade 104 relative to the fixed blade holder 103 more stable, the processing structure 100 in this embodiment also includes a mounting component 105. The mounting component 105 includes a fixed blade mounting bracket, which is disposed in the receiving cavity 1031 and connected to the fixed blade holder 103. One of the sliding part and the sliding mating part is disposed on the fixed blade mounting bracket, and the other is disposed on the fixed blade 104.

[0047] In detail, the fixed knife mounting frame includes two opposite fixed knife mounting plates, the two ends of any fixed knife mounting plate abut against the two ends of the fixed knife seat 103, the two fixed knife mounting plates can be mounted on the fixed knife seat 103 by using fasteners, the sliding grooves are formed on the two opposite fixed knife mounting plates, the sliding blocks are arranged at the corresponding positions of the fixed knife seat 103, the sliding blocks can slide along the sliding grooves, thereby achieving the effect that the fixed knife blades 104 slide relative to the fixed knife seat 103, see Figure 2 The fixed knife mounting plates are respectively a first fixed knife mounting plate 1051 and a second fixed knife mounting plate 1052.

[0048] Of course, the sliding blocks can also be welded on the fixed knife blades 104, and the sliding grooves can also be formed on the fixed knife mounting plates, so that the sliding connection between the fixed knife blades 104 and the fixed knife seat 103 can also be achieved.

[0049] In the embodiment, the mounting assembly 105 further includes a positioning shaft, a first positioning hole 1041 is formed on any fixed knife blade 104, and a second positioning hole and a third positioning hole are formed on the harvester body 300.

[0050] When all the fixed knife blades 104 are located at the avoiding positions, the positioning shaft is adapted to pass through the first positioning hole 1041 and the second positioning hole, so that the fixed knife blades 104 are positioned and mounted on the harvester body 300 through the fixed knife seat and the fixed knife mounting plates.

[0051] When all the fixed knife blades 104 are located at the using positions, the positioning shaft is adapted to pass through the first positioning hole 1041 and the third positioning hole, so that all the fixed knife blades 104 are positioned and mounted on the harvester body 300 through the fixed knife seat 103 and the fixed knife mounting plates.

[0052] The processing structure 100 in the embodiment further includes a driving pulley 108 and a transition pulley 109, which are configured to be drivingly connected through a transmission belt, the hub hole diameter of the driving pulley 108 is the same as the hub hole diameter of the transition pulley 109, and the transmission ratio of the driving pulley 108 and the transition pulley 109 is set to 4:1.

[0053] When the processing structure 100 is in the cutting state, the driving pulley 108 is connected with the moving knife roller 101, at this time, the transition pulley 109 is arranged on the harvester body 300, the driving pulley 108 drives the rotation of the transition pulley 109 through the transmission belt, thereby achieving the effect that the moving knife roller 101 drives the moving knife blades 102 to cut the material after passing through the gap between the fixed knife blades 104.

[0054] When the processing structure 100 is in the discharging state, the transition pulley 109 is interchanged with the driving pulley 108, the transition pulley 109 is connected with the moving knife roller 101, the driving pulley 108 is arranged on the harvester body 300, at this time the processing structure 100 is in the discharging state, and since the transmission ratio of the driving pulley 108 and the transition pulley 109 is set to 4:1, the rotating speed of the moving knife blade 102 can reach 4000 revolutions in the cutting state, and the rotating speed of the moving knife blade 102 is 1000 revolutions in the discharging state, which meets the different rotating speed requirements in the two states, and the transmission belt does not need to be replaced, which meets the use requirement, and the driving pulley 108 and the transition pulley 109 are interchanged, in the discharging state, the rotating speed is reduced by interchanging the pulleys, and the surface of the grass is not damaged.

[0055] In order to improve the interchanging efficiency when the transition pulley 109 is interchanged with the driving pulley 108, the processing structure 100 in the embodiment further comprises a tensioning assembly, the tensioning assembly comprises a tensioning roller and a tensioning driving member 111, the outer roller surface of the tensioning roller is adapted to abut against the side surface of the transmission belt, one end of the tensioning driving member 111 is rotationally connected with the harvester body 300, and the other end is connected with the tensioning roller; after the tensioning driving member 111 is acted on by an external force, the tensioning driving member 111 rotates to drive the tensioning roller to relax the transmission belt, so as to interchange the driving pulley 108 and the transition pulley 109.

[0056] In actual use, the tensioning roller can be provided as two, which are arranged on the inner side surface and the outer side surface of the transmission belt, the tensioning driving member 111 is connected with the first tensioning roller 110 located on the outer side surface, and the other second tensioning roller is connected with the first tensioning roller 110 through a rotating rod, and the rotating rod is rotationally connected with the harvester body, the tensioning driving member 111 rotates to drive the second tensioning roller to rotate to relax or tension the transmission belt, so as to perform the next action.

[0057] In detail, referring to Figure 5The tight driving member 111 includes a tight connecting part 1111 and a tight driving part 1112. One end of the tight connecting part 1111 is connected with the tight roller, and the other end is connected with the tight driving part 1112. One end of the tight driving part 1112 is rotatably connected with the harvester body 300 through a rotating connecting rod and a rotary shaft 106. The rotary shaft 106 is fixed on the harvester body 300. Then, the rotating connecting rod is sleeved on the rotary shaft 106 and can be connected with the rotary shaft 106. One end of the tight driving member 111 is connected with the rotating connecting rod. When the rotary shaft 106 rotates, the rotating connecting rod rotates, and then the tight driving part 1112 and the tight connecting part 1111 drive the first tight roller 110 to approach or separate from the transmission belt, so as to realize the effect of tensioning or relaxing the transmission belt. In actual use, the tight driving part 1112 is arranged in an arc shape, and the tight connecting part 1111 is in a rod shape, and one end of the rod is hooked on the first tight roller 110.

[0058] In order to facilitate operation, a handle 107 can be further fixed on the rotary shaft 106. The operator operates the handle 107 to apply a rotating driving force to the rotary shaft 106.

[0059] It should be noted that the fixed knife seat 103 is arranged obliquely below the movable knife roller 101. One end of the movable knife roller 101 is provided with a driving shaft to connect the driving pulley 108 or the transition pulley 109.

[0060] Embodiment 2:

[0061] This embodiment describes a harvester including the processing structure 100 described in embodiment 1.

[0062] The harvester in this embodiment adopts the processing structure 100 described in embodiment 1, and thus has all the beneficial effects of the processing structure 100. The harvester can quickly switch between the cutting state and the discharging state without replacing the entire device, and does not need to carry two sets of structures at the same time, which saves time and effort and effectively reduces the use of raw materials.

[0063] Obviously, the above embodiments are only examples for clearly illustrating the application and are not intended to limit the application. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments cannot be exhausted, and the obvious changes or modifications derived therefrom are still within the protection scope of the application.

Claims

1. A processing structure, characterized by, The processing structure is installed on the harvester body (300) corresponding to the discharge port (200) of the harvester, and comprises: a movable knife roller (101) rotatably arranged on the harvester body (300); a plurality of movable knife blades (102) arranged on the movable knife roller (101); a fixed knife seat (103) arranged on the harvester body (300) opposite to the movable knife roller (101); a plurality of fixed knife blades (104) in sliding connection with the fixed knife seat (103), the fixed knife seat (103) comprising a receiving cavity (1031), one end of the fixed knife blade (104) being configured to slide relative to the fixed knife seat (103) to extend out of the receiving cavity (1031) in a use position and to retreat into the receiving cavity (1031) in a retreat position; when the fixed knife blades (104) are in the use position, the movable knife roller (101) is driven to rotate, the movable knife roller (101) drives the movable knife blades (102) to pass through the gaps between the fixed knife blades (104) to cut the forage in a cutting state, and the fixed knife blades (104) are switched from the use position to the retreat position under the action of an external force, the movable knife roller (101) drives the movable knife blades (102) to avoid the gaps between the fixed knife blades (104) to discharge the forage in a discharging state; one of the fixed knife seat (103) and the fixed knife blade (104) is provided with a sliding part, and the other is provided with a sliding matching part matched with the sliding part; one end of the fixed knife blade (104) is adapted to be inserted into the receiving cavity (1031), and the sliding part is adapted to slide along the sliding matching part when the fixed knife blade (104) is switched from the use position to the retreat position; the installation assembly (105) further comprises a positioning shaft, a first positioning hole (1041) is formed on any one of the fixed knife blades (104), and a second positioning hole and a third positioning hole are formed on the harvester body (300); when all the fixed knife blades (104) are in the retreat position, the positioning shaft is adapted to pass through the first positioning hole (1041) and the second positioning hole to install the fixed knife blades (104) on the harvester body (300); when all the fixed knife blades (104) are in the use position, the positioning shaft is adapted to pass through the first positioning hole (1041) and the third positioning hole to install the fixed knife blades (104) on the harvester body (300).

2. The processing structure of claim 1, wherein, The sliding part is a sliding block, and the sliding matching part is a sliding groove.

3. The processing structure of claim 2, wherein, The installation assembly (105) further comprises a fixed knife mounting frame arranged in the receiving cavity (1031) and connected with the fixed knife seat (103), one of the sliding part and the sliding matching part is arranged on the fixed knife mounting frame, and the other is arranged on the fixed knife blade (104).

4. The processing structure of claim 3, wherein, The fixed knife mounting frame comprises two oppositely arranged fixed knife mounting plates, the two ends of any fixed knife mounting plate abut against the two ends of the fixed knife seat (103), and the sliding grooves are formed on the two oppositely arranged fixed knife mounting plates.

5. A process structure according to any one of claims 1-4, c h a r a c t e r i z e d in that Further comprising: The drive pulley (108) and the transition pulley (109) are configured to be drivingly connected through a transmission belt, the hub aperture of the drive pulley (108) is the same as the hub aperture of the transition pulley (109), and the transmission ratio of the drive pulley (108) and the transition pulley (109) is 4:

1. When the processing structure is in the cutting state, the drive pulley (108) is connected with the movable knife roller (101), and when the processing structure is in the discharging state, the transition pulley (109) is connected with the movable knife roller (101).

6. The processing structure of claim 5, wherein, Further comprising a tensioning assembly, which comprises a tensioning roller and a tensioning driving member (111), the tensioning roller is adapted to abut against the side surface of the transmission belt, one end of the tensioning driving member (111) is rotationally connected with the harvester body (300), and the other end is connected with the tensioning roller. Under the action of external force, the tensioning driving member (111) is adapted to rotate to drive the tensioning roller to relax the transmission belt, so as to interchange the drive pulley (108) and the transition pulley (109).

7. The processing structure of claim 6, wherein, The tensioning driving member (111) comprises a tensioning connecting portion (1111) and a tensioning driving portion (1112), one end of the tensioning connecting portion (1111) is connected with the tensioning roller, and the other end is connected with the tensioning driving portion (1112).

8. The processing structure of claim 7, wherein, The tensioning driving portion (1112) is arranged in an arc shape.

9. A harvester characterized in that, The processing structure is the processing structure (100) according to any one of claims 1-8.

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