A straw shredding and returning machine with a straw cutting and clearing device

Abstract

This utility model relates to a straw cutting and discharging device for a straw crushing and returning machine, comprising a housing with a feeding end and a discharging end; a fixed blade assembly including a feeding plate, fixed blades, and a fixed blade shaft, wherein the feeding plate is disposed at the feeding end of the housing; adjusting plates are installed at both ends of the feeding plate, the adjusting plates abutting against the inner wall of a side plate and being able to move longitudinally along the side plate, and a first locking element is provided between the adjusting plate and the side plate to prevent the longitudinal displacement of the adjusting plate; a strip-shaped hole matching the fixed blade is formed on the feeding plate, and the fixed blade extends upward through the strip-shaped hole; the two ends of the fixed blade shaft pass through the adjusting plate and are rotatably connected to the side plate, and a second locking element is provided between the side plate, the adjusting plate, and the fixed blade shaft to prevent the rotation of the fixed blade shaft. The adjustable function of the feeding plate and the fixed blade of this utility model significantly improves the cutting efficiency, adaptability, and reliability of the straw crushing and returning machine.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a straw cutting and distributing device for a straw crushing and returning machine. Background Technology

[0002] In agricultural machinery, the straw cutting and spreading device of the straw crushing and returning machine is installed at the outlet of the threshing chamber of the returning machine, and is mainly used to evenly cut and spread the threshed straw back to the field.

[0003] Existing straw cutting and discharging devices have the following defects in actual production: 1. The straw feeding plate structure is fixed and cannot be flexibly adjusted according to the thickness, distribution, or hardness differences of the straw, resulting in unstable straw cutting effect under different field conditions and easy problems such as clogging or incomplete cutting; 2. The arrangement of moving and fixed blades is not optimized, resulting in low cutting frequency, uneven cutting path, and high cutting resistance, thus affecting crushing efficiency; those skilled in the art urgently need to solve the above technical problems. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a straw cutting and discharging device for a straw crushing and returning machine.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A straw crushing and returning machine includes a straw cutting and discharging device, comprising a housing, a moving blade assembly and a fixed blade assembly disposed between two side plates of the housing;

[0007] The housing has an inlet end and an outlet end;

[0008] A fixed blade assembly, comprising a feed plate, fixed blades, and a fixed blade shaft, wherein the feed plate is disposed at the feed end of the housing;

[0009] Adjustment plates are installed at both ends of the feeding plate. The adjustment plates abut against the inner wall of the side plate and can move longitudinally along the side plate. A first locking member is provided between the adjustment plate and the side plate to prevent the longitudinal displacement of the adjustment plate.

[0010] The feed plate has a strip-shaped hole that matches the fixed blade, and the fixed blade extends upward through the strip-shaped hole;

[0011] Adjusting plates are inserted through both ends of the fixed blade shaft and are rotatably connected to the side plate. The fixed blade rotates in an arc shape within the strip hole along with the fixed blade shaft. A second locking element is provided between the side plate, the adjusting plate, and the fixed blade shaft to prevent the fixed blade shaft from rotating.

[0012] In a preferred embodiment of the present invention, a first waist-shaped hole arranged longitudinally is provided on the side plate, the first waist-shaped hole corresponds to a first bolt hole provided on the adjustment plate, and a first locking member is provided between the first bolt hole and the first waist-shaped hole.

[0013] In a preferred embodiment of this utility model, the first locking member is a bolt, and the first oblong hole has an adjustment range of 5mm.

[0014] In a preferred embodiment of the present invention, a first arc-shaped groove is provided on the side plate, with the axis of the fixed blade shaft as the center. A second arc-shaped groove matching the first arc-shaped groove is provided on the adjusting plate, and a second bolt hole is provided at the end of the fixed blade shaft. The second locking member passes through the first arc-shaped groove and is locked in the second bolt hole. The second locking member is a bolt.

[0015] In a preferred embodiment of the present invention, the end of the fixed blade shaft abuts against the inner wall of the adjusting plate, and the adjusting plate is provided with a shaft hole having an opening for the fixed blade shaft to pass through.

[0016] The opening is arranged at an angle toward the feed end.

[0017] In a preferred embodiment of the present invention, the moving blade assembly includes a blade roller rotatably mounted between two side plates, and a moving blade disposed on the blade roller, the moving blade being arranged between two fixed blades.

[0018] In a preferred embodiment of the present invention, the moving blade assembly further includes a plurality of moving blade sleeves, which are arranged in four rows on the blade roller, and each row of moving blade sleeves extends spirally from one end of the blade roller to the other end.

[0019] The moving blade is detachably fixed inside the moving blade sleeve.

[0020] Beneficial effects:

[0021] This utility model discloses a straw crushing and returning machine with a straw cutting and discharging device. The fixed blade angle is adjustable and can be adjusted according to the characteristics of the straw to place it in the optimal force direction, thereby improving the straw cutting and crushing efficiency.

[0022] The position of the feeding plate in this invention is optimized by adjusting the longitudinal displacement of the plate on the inner wall of the side plate to adapt to differences in straw thickness, distribution or hardness, ensuring that the straw can enter the cutting area more smoothly and reducing the possibility of blockage.

[0023] The optimized cutting path and spiral arrangement of the moving blades in this invention enable the straw to be crushed evenly. The crushed straw fragments are discharged through the discharge end of the shell and evenly distributed in the field, which helps to improve soil structure, increase soil organic matter content, and promote crop growth.

[0024] This invention significantly improves the cutting efficiency, adaptability, and reliability of straw crushing and returning machine by optimizing the structural design of the moving blade group and the fixed blade group, as well as the adjustable function of the straw feeding plate and the fixed blade. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of the straw cutting and discharging device of a straw crushing and returning machine provided by this utility model. Figure 1 ;

[0026] Figure 2 A schematic diagram of the structure of the straw cutting and discharging device of a straw crushing and returning machine provided by this utility model. Figure 2 ;

[0027] Figure 3 This is a partial installation structure diagram of the fixed blade assembly and the side plate described in this utility model;

[0028] Figure 4 This is a right view of the partial installation of the fixed blade assembly and the side plate described in this utility model;

[0029] Figure 5 This is a schematic diagram of the installation structure of the grass feeding plate and the adjusting plate described in this utility model;

[0030] Figure 6 This is a schematic diagram of the installation structure of the fixed blade and the fixed blade shaft of the present invention;

[0031] Figure 7 This is a front view of the fixed blade assembly described in this utility model.

[0032] In the figure: 1 shell, 11 side plate, 111 first waist-shaped hole, 112 first arc-shaped groove;

[0033] 2 moving blade assembly, 21 blade roller, 22 moving blade, 23 moving blade sleeve;

[0034] 3. Fixed blade assembly, 31. Grass feed plate, 32. Fixed blade, 33. Fixed blade shaft, 34. Adjustment plate. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figure 1-3 As shown, this utility model provides a straw cutting and discharging device for a straw crushing and returning machine, including a housing 1, a moving blade assembly 2 and a fixed blade assembly 3 disposed between two side plates 11 of the housing 1;

[0037] The housing 1 has an inlet end and an outlet end;

[0038] The fixed blade assembly 3 includes a feed plate 31, a fixed blade 32 and a fixed blade shaft 33, wherein the feed plate 31 is disposed at the feed end of the housing 1;

[0039] Adjustment plates 34 are installed at both ends of the aforementioned grass feeding plate 31. The adjustment plates 34 abut against the inner wall of the side plate 11 and can move longitudinally along the side plate 11. A first locking member is provided between the adjustment plates 34 and the side plate 11 to prevent the longitudinal displacement of the adjustment plates 34.

[0040] The aforementioned feed plate 31 has a strip-shaped hole that matches the fixed blade 32, and the fixed blade 32 extends upward through the strip-shaped hole;

[0041] Adjustment plates 34 are inserted through both ends of the fixed blade shaft 33 and are rotatably connected to the side plate 11. The fixed blade 32 rotates in an arc shape in the slot with the fixed blade shaft 33. A second locking member is provided between the side plate 11, the adjustment plate 34 and the fixed blade shaft 33 to prevent the fixed blade shaft 33 from rotating.

[0042] The working principle and beneficial effects of the above embodiments are as follows:

[0043] The straw is fed into the shell 1 from the inlet end, and the straw feeding plate 31 is located at the inlet end, so that the straw can enter the subsequent cutting area more smoothly.

[0044] Position adjustment of the feeding plate 31: The above-mentioned adjustment plate 34 is installed at both ends of the feeding plate 31 and welded to the feeding plate 31. The adjustment plate 34 abuts against the inner wall of the side plate 11. The position of the feeding plate 31 can be adjusted by the longitudinal displacement of the adjustment plate 34 to adapt to straw of different thicknesses or distributions. When adjusted to a suitable position, the adjustment plate 34 is fixed by the first locking member to prevent longitudinal displacement during operation.

[0045] Angle adjustment of fixed blade 32: The fixed blade 32 is inserted through a strip hole onto the straw feeding plate 31, and one end is fixed to the fixed blade shaft 33. Adjustment plates 34 are inserted through both ends of the fixed blade shaft 33 and are rotatably connected to the side plate 11. Before operation, the angle of the fixed blade 32 is adjusted by rotating the fixed blade shaft 33 so that the fixed blade 32 is in a better force direction to improve the straw crushing efficiency. After adjustment to the appropriate position, the fixed blade shaft 33 is fixed by the second locking part to ensure the stability of the fixed blade shaft 33 during operation and avoid angle changes due to vibration or impact.

[0046] The moving blade group 2 and the fixed blade group 3 work together. Through the high-speed rotation of the moving blade group 2 and the fixed cutting of the fixed blade 32, the straw is efficiently crushed. The crushed straw fragments are discharged through the discharge end of the shell 1 to complete the return to the field operation.

[0047] This invention significantly improves straw crushing efficiency, reduces cutting resistance, and increases operating speed by adjusting the angle of the fixed blade 32 to place it in the optimal force direction.

[0048] The position of the straw feeding plate 31 can be adjusted according to the thickness and distribution of the straw to adapt to different field conditions, optimize the straw feeding effect, and reduce the problems of blockage or incomplete cutting caused by uneven straw distribution.

[0049] The first and second locking components ensure the stability of the feed plate 31 and the fixed blade 32 during operation, preventing changes in position or angle due to vibration or impact, and ensuring the reliability and service life of the equipment.

[0050] In one embodiment,

[0051] like Figure 4 As shown, a first waist-shaped hole 111 is arranged longitudinally on the side plate 11. The first waist-shaped hole 111 corresponds to the first bolt hole on the adjusting plate 34, and a first locking member is provided between the first bolt hole and the first waist-shaped hole 111.

[0052] The design of the first waist-shaped hole 111 allows the adjusting plate 34 to move in the longitudinal direction, thereby realizing the adjustment of the position of the feeding plate 31. The adjusting plate 34 is provided with a first bolt hole corresponding to the first waist-shaped hole 111. The first locking member passes through the first waist-shaped hole 111 and the first bolt hole of the adjusting plate 34 to connect and fix the adjusting plate 34 and the side plate 11.

[0053] The design of the first waist-shaped hole 111 and the first bolt hole makes the adjustment of the position of the grass feeding plate 31 simple and convenient.

[0054] In one embodiment,

[0055] The first locking element is a bolt. The first waist-shaped hole 111 has an adjustment range of 5mm, so that the adjusting plate 34 can move longitudinally along the inner wall of the side plate 11, and maintain a displacement of 5mm between the adjusting plate 34 and the moving knife assembly 2.

[0056] The bolt tightening and loosening operation is simple, and the adjustment plate 34 can be quickly fixed and released, making it easy to adjust the position of the grass feeding plate 31; the adjustment plate 34 and the moving blade assembly 2 always maintain a displacement of 5mm, ensuring that the fixed blade 32 will not interfere with or collide with the moving blade assembly 2 when the grass feeding plate 31 is adjusted.

[0057] In one embodiment,

[0058] like Figure 4-6 As shown, a first arc-shaped groove 112 is provided on the side plate 11, with the axis of the fixed blade shaft 33 as the center. A second arc-shaped groove matching the first arc-shaped groove 112 is provided on the adjusting plate 34, and a second bolt hole is provided at the end of the fixed blade shaft 33. The second locking member passes through the first arc-shaped groove 112 and is locked in the second bolt hole. The second locking member is also set as a bolt.

[0059] A first arc-shaped groove 112 is provided on the side plate 11. The first arc-shaped groove 112 is centered on the axis of the fixed blade shaft 33, allowing the fixed blade shaft 33 to rotate in an arc within a certain range, thereby adjusting the angle of the fixed blade 32.

[0060] By loosening the second locking element (bolt), the fixed blade shaft 33 can rotate in an arc within the range of the first arc groove 112 and the second arc groove, thereby adjusting the angle of the fixed blade 32. After the fixed blade 32 is adjusted to the appropriate angle, by tightening the second locking element (bolt), the fixed blade shaft 33 can be firmly fixed between the side plate 11 and the adjusting plate 34 to prevent it from rotating during operation.

[0061] In one embodiment,

[0062] like Figure 7 As shown, the end of the fixed blade shaft 33 abuts against the inner wall of the adjusting plate 34, and the adjusting plate 34 is provided with a second oblong hole with an opening for the fixed blade shaft 33 to pass through. The design of the second oblong hole avoids the displacement adjustment of the adjusting plate 34 from affecting the installation of the fixed blade shaft 33.

[0063] The openings mentioned above are arranged at an angle towards the feed end; the arrangement of the angled openings optimizes the installation process, provides guidance for the installation of the fixed blade shaft 33, facilitates disassembly and assembly, and improves the maintainability of the equipment.

[0064] In one embodiment,

[0065] For example Figure 2As shown, the moving blade assembly 2 includes a blade roller 21 rotatably mounted between two side plates 11, and a moving blade 22 disposed on the blade roller 21, the moving blade 22 being arranged between two fixed blades 32.

[0066] The moving blade 22 rotates at high speed under the drive of the cutter roller 21, forming a shearing force with the fixed blade 32, which can efficiently cut the straw into fragments.

[0067] In one embodiment,

[0068] The aforementioned moving blade assembly 2 also includes several moving blade sleeves 23, which are arranged in four rows on the aforementioned cutting roller 21. Each row of moving blade sleeves 23 extends spirally from one end of the cutting roller 21 to the other end. The spiral arrangement of each row of moving blade sleeves 23 makes the distribution of the moving blades 22 on the cutting roller 21 more uniform, optimizes the cutting path, and improves the cutting efficiency. The aforementioned moving blade sleeves 23 are welded to the cutting roller 21.

[0069] The aforementioned moving blade 22 is detachably fixed inside the moving blade sleeve 23, facilitating quick replacement when worn or damaged.

[0070] In summary:

[0071] This utility model discloses a straw crushing and returning machine with a straw cutting and discharging device. The fixed blade angle is adjustable and can be adjusted according to the characteristics of the straw to place it in the optimal force direction, thereby improving the straw cutting and crushing efficiency.

[0072] The position of the straw feeding plate in this invention is optimized by adjusting the longitudinal displacement of the plate on the inner wall of the side plate to adapt to the on-site distribution of straw, ensuring that the straw can enter the cutting area more smoothly and reducing the possibility of blockage.

[0073] The optimized cutting path and spiral arrangement of the moving blades in this invention enable the straw to be crushed evenly. The crushed straw fragments are discharged through the discharge end of the shell and evenly distributed in the field, which helps to improve soil structure, increase soil organic matter content, and promote crop growth.

[0074] This invention significantly improves the cutting efficiency, adaptability, and reliability of straw crushing and returning machine by optimizing the structural design of the moving blade group and the fixed blade group, as well as the adjustable function of the straw feeding plate and the fixed blade.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A straw-cutting and discharging device for a straw crushing and returning machine, characterized in that: It includes a housing (1), a moving blade assembly (2) and a fixed blade assembly (3) disposed between two side plates (11) of the housing (1); The housing (1) is provided with an inlet end and an outlet end; The fixed blade assembly (3) includes a grass feeding plate (31), a fixed blade (32) and a fixed blade shaft (33), wherein the grass feeding plate (31) is disposed at the feed end of the housing (1); Adjustment plates (34) are installed at both ends of the grass feeding plate (31). The adjustment plates (34) abut against the inner wall of the side plate (11) and can move longitudinally along the side plate (11). A first locking member is provided between the adjustment plate (34) and the side plate (11) to prevent the longitudinal movement of the adjustment plate (34). The feed plate (31) has a strip-shaped hole that matches the fixed blade (32), and the fixed blade (32) extends upward through the strip-shaped hole; Adjustment plates (34) are inserted through both ends of the fixed blade shaft (33) and are rotatably connected to the side plate (11). The fixed blade (32) rotates in an arc shape in the slotted hole along with the fixed blade shaft (33). A second locking member is provided between the side plate (11), the adjustment plate (34) and the fixed blade shaft (33) to prevent the fixed blade shaft (33) from rotating.

2. The straw cutting and discharging device of a straw crushing and returning machine according to claim 1, characterized in that: A first waist-shaped hole (111) is provided on the side plate (11) in a longitudinal direction. The first waist-shaped hole (111) corresponds to the first bolt hole provided on the adjustment plate (34), and a first locking member is provided between the first bolt hole and the first waist-shaped hole (111).

3. The straw cutting and discharging device of a straw crushing and returning machine according to claim 2, characterized in that: The first locking element is a bolt, and the first waist-shaped hole (111) has an adjustment range of 5mm.

4. The straw cutting and discharging device of a straw crushing and returning machine according to claim 1, characterized in that: A first arc-shaped groove (112) is provided on the side plate (11), with the axis of the fixed blade shaft (33) as the center. A second arc-shaped groove matching the first arc-shaped groove (112) is provided on the adjusting plate (34), and a second bolt hole is provided at the end of the fixed blade shaft (33). The second locking member passes through the first arc-shaped groove (112) and the second arc-shaped groove is locked in the second bolt hole. The second locking member is a bolt.

5. The straw cutting and discharging device of a straw crushing and returning machine according to claim 1, characterized in that: The end of the fixed blade shaft (33) abuts against the inner wall of the adjusting plate (34), and the adjusting plate (34) is provided with a second waist-shaped hole with an opening for the fixed blade shaft (33) to pass through. The opening is arranged at an angle toward the feed end.

6. The straw cutting and discharging device of a straw crushing and returning machine according to claim 1, characterized in that: The moving blade assembly (2) includes a blade roller (21) rotatably mounted between two side plates (11) and a moving blade (22) disposed on the blade roller (21), the moving blade (22) being arranged between two fixed blades (32).

7. The straw cutting and discharging device of a straw crushing and returning machine according to claim 6, characterized in that: The moving blade assembly (2) also includes a number of moving blade sleeves (23), which are arranged in four rows on the blade roller (21), and each row of moving blade sleeves (23) extends spirally from one end of the blade roller (21) to the other end. The moving blade (22) is detachably fixed inside the moving blade sleeve (23).

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