Multi-functional rotary grass crusher

Abstract

The utility model discloses multifunctional rotary grass crusher belongs to agricultural equipment field. Multifunctional rotary grass crusher, including connecting seat, the top fixed connection of connecting seat has drive motor, the outside of drive motor is provided with motor protection shell no.

Description

Technical Field

[0001] This utility model relates to the field of agricultural equipment, and more specifically, to a multi-functional rotary grass shredder. Background Technology

[0002] A lawnmower is a machine specifically designed for cutting and shredding lawns, weeds, and shrubs. It uses high-speed rotating blades or saws to cut plant material in a lawn or park into small pieces. These pieces decompose quickly, returning to the soil as organic fertilizer or used for other horticultural purposes. Lawnmowers are widely used in agriculture, horticulture, and landscaping, significantly improving work efficiency and reducing the time and cost of manual lawn cleaning.

[0003] However, existing traditional grass shredders often have several problems in use. First, many traditional grass shredders have a fixed design and limited operating angle, making them difficult to adapt to complex terrains (such as slopes or corner areas of a park). Second, some grass shredders have a small coverage area, requiring frequent adjustments and increasing workload. Furthermore, during the shredding process, grass debris is easily scattered, potentially posing safety hazards to operators and the surrounding environment. More importantly, the core components of traditional grass shredders are susceptible to corrosion from external dust and impurities, reducing the equipment's lifespan.

[0004] Based on this, the present invention designs a multi-functional rotary grass shredder to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional rotary grass shredder to solve the problems mentioned in the background art.

[0006] A multi-functional rotary grass shredder includes a connecting base. A drive motor is fixedly connected to the top of the connecting base. A motor protective shell is provided outside the drive motor. The inner side wall of the motor protective shell is fixedly connected to the outer side wall of the connecting base. A drive gear is fixedly connected to the output end of the drive motor. A driven gear is meshed with the outside of the drive gear. A connecting piece is fixedly connected to the bottom of the driven gear. A gear protective shell is fixedly connected to the bottom of the connecting base. A protective cover is fixedly connected to the bottom of the connecting piece. A transmission assembly is fixedly connected to the top of the protective cover. The transmission assembly is used to supply power to the shredding device.

[0007] Preferably, the transmission assembly includes a crushing motor, the bottom of which is fixedly connected to the top of the protective cover, and a drive pulley is fixedly connected to the output end of the crushing motor. The drive pulley is connected to a driven pulley via a transmission belt, and a cutter disc body is fixedly connected inside the driven pulley.

[0008] Preferably, the crushing motor is provided with a second motor protective shell, and the bottom of the second motor protective shell is fixedly connected to the top of the protective cover.

[0009] Preferably, both the driving pulley and the driven pulley are provided with pulley protective shells, and the pulley protective shells are fixedly connected to the outer side wall of the protective cover.

[0010] Preferably, both ends of the cutter head body are rotatably connected to the inside of the protective cover, and cutter holders are fixedly connected to the outside of the cutter head body.

[0011] Preferably, each of the tool holders has a blade fixedly connected inside.

[0012] Preferably, the inner sidewalls of the protective cover are all fixedly connected with saw blades.

[0013] Preferably, the bottom of each protective cover is provided with a chain. Beneficial effects

[0014] Compared with existing technologies, the advantages of this utility model are: 1) In this utility model, the drive motor, the active gear, and the driven gear work together to drive the connecting parts and the protective cover to rotate flexibly. Combined with the transmission components, this drives the cutter disc to rotate, enabling the grass shredding operation to adapt to different angles and ranges. This significantly improves the equipment's operational flexibility in complex terrains (such as slopes and corner areas) and solves the problems of fixed operating angles and limited coverage of traditional grass shredders. At the same time, the gear protective shell effectively isolates the gears from external dust and grass impurities, extending the service life of the core components.

[0015] 2) In this utility model, the blades on the cutter head are fixed by the blade holder, forming a double cutting structure with the saw blade on the inner wall of the protective cover. The high-speed rotating blades crush the grass, and the saw blade can also cut the grass during the crushing process, greatly improving the crushing efficiency and uniformity. The chain at the bottom of the protective cover not only prevents the grass fragments from splashing during the crushing process, but also ensures a safe working environment. In addition, the pulley protective shell and the motor protective shell protect the transmission belt, drive pulley, driven pulley, and crushing motor, further reducing the probability of equipment failure due to external collisions or impurities.

[0016] 3) In summary, this utility model, through its modular structural design (such as a rotatable transmission structure, dual cutting components, and multiple protective parts), improves operational flexibility and grass-chopping efficiency while also ensuring the durability and safety of the equipment. The overall structure is compact and easy to operate, making it suitable for various scenarios such as agricultural planting and garden maintenance. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a bottom view of the overall structure of this utility model.

[0018] The following are the labels in the diagram: 1. Connecting seat; 2. Drive motor; 3. Drive gear; 4. Driven gear; 5. Motor protective shell one; 6. Gear protective shell; 7. Connecting piece; 8. Protective cover; 9. Crushing motor; 10. Motor protective shell two; 11. Drive pulley; 12. Driven pulley; 13. Transmission belt; 14. Pulley protective shell; 15. Cutter disc body; 16. Cutter holder; 17. Blade; 18. Saw blade; 19. Chain. Detailed Implementation

[0019] Example: Please refer to Figure 1-3 This multi-functional rotary grass shredder includes a connecting base 1, which has a rectangular frame structure with a pre-drilled mounting surface on top for stable support of the drive components. A drive motor 2, a three-phase asynchronous motor, is bolted to the top of the connecting base 1, providing stable rotational power tailored to the equipment's operational needs. The drive motor 2 is encased in a semi-enclosed protective housing 5, whose inner wall is bolted to the outer wall of the connecting base 1, providing physical protection for the drive motor 2 without compromising heat dissipation. The output end of the drive motor 2 is fixedly connected to the drive gear 3 via a flat key. The drive gear 3 is forged from 45# steel, and its tooth surface is hardened to enhance wear resistance. The drive gear 3 is externally meshed with the driven gear 4. Through gear reduction, the rotational speed of the connecting piece 7 can be reduced, thereby increasing torque output. The bottom of the driven gear 4 is fixedly connected to the connecting piece 7 via a flange, and its top is aligned with the center position of the driven gear 4 to ensure stability during power transmission. The bottom of the connecting base 1 is fixedly connected to a gear protective shell 6 by bolts. The gear protective shell 6 is a metal enclosed shell that completely encloses the driving gear 3 and the driven gear 4. After the top of the connecting piece 7 passes through the reserved hole of the gear protective shell 6, a protective cover 8 is fixedly connected to it by bolts. The protective cover 8 is a metal shell with its opening facing downwards. Its inner sidewall is polished to reduce the adhesion of straw. A transmission assembly is fixedly connected to the top of the protective cover 8 via a motor bracket. This transmission assembly supplies power to the crushing device. The transmission assembly includes a crushing motor 9, which is a DC servo motor whose speed can be controlled by a speed regulator. The bottom of the crushing motor 9 is bolted to one side of the top of the protective cover 8. Its output end is fixedly connected to a drive pulley 11 via a coupling. The diameter of the drive pulley 11 is smaller than that of the driven pulley 12, achieving a speed increase through belt drive. The drive pulley 11 is connected to the driven pulley 12 via a transmission belt 13, which is a polyurethane synchronous belt, characterized by high transmission accuracy and resistance to slippage. A cutter head body 15, a cylindrical metal shaft, is fixedly connected to the inside of the driven pulley 12 via a keyway. Both ends of the cutter head body 15 are connected to the protective cover 8 via bearings. Reference Figure 1 , Figure 2 and Figure 3 The crushing motor 9 is covered by a motor protective shell 2 10. The structure of the motor protective shell 2 10 is similar to that of the motor protective shell 1 5. Its bottom is fixedly connected to the top of the protective cover 8 by bolts, corresponding to the installation position of the crushing motor 9. The driving pulley 11 and the driven pulley 12 are both covered by pulley protective shells 14. The pulley protective shells 14 are of a split structure and are fixedly connected to the outer wall of the protective cover 8 by buckles, which facilitates disassembly and maintenance. Both ends of the cutter head body 15 are rotatably connected to the inside of the protective cover 8 via deep groove ball bearings, and the bearing seats are welded and fixed to the inner side wall of the protective cover 8. Multiple tool holders 16 are evenly distributed axially on the outside of the cutter head body 15. Each tool holder 16 is a U-shaped metal part, fixed to the outer circumference of the cutter head body 15 by welding. An insert 17, made of high-speed steel, is fixedly connected to the inside of each tool holder 16 via countersunk bolts. The inner wall of the protective cover 8 is uniformly and fixedly connected with saw blades 18 along the arc direction, forming an interlocking fit with the rotation trajectory of the blade 17. Chains 19 are evenly suspended from the bottom edge of the protective cover 8 by hinges, which can block debris from flying but do not affect the entry of hay.

[0020] Working principle of this utility model: The drive system of this grass shredder consists of a drive motor 2, a drive gear 3, and a driven gear 4. When the drive motor 2 is working, its power is transmitted to the driven gear 4 through the drive gear 3, and then drives the protective cover 8 to rotate through the connecting piece 7. The rotation of the protective cover 8, combined with the drive of the transmission components, pushes the cutter head 15 to rotate at high speed, thereby achieving the cutting and shredding of the grass. This rotating structure can flexibly adjust the working angle to adapt to the needs of different terrains (such as slopes and corner areas), greatly improving the flexibility of grass shredding operations.

[0021] Multiple sharp blades 17 are mounted on the cutter head body 15. These blades 17 are fixed by the blade holder 16 and, in conjunction with the saw blade 18 inside the protective cover 8, form a double-cutting structure. During operation, the blades 17 rotate at high speed, quickly cutting the grass into fragments; simultaneously, the saw blade 18 inside the protective cover 8 further cuts the grass, improving the efficiency and uniformity of the crushing process. This design makes the grass-crushing process more efficient and ensures a more uniform crushing effect, reducing uneven grass fragmentation during the crushing process.

[0022] During the hay chopping operation, a chain 19 is installed at the bottom of the protective cover 8, which can effectively prevent hay fragments from flying and ensure the safety of the working environment. In addition, the pulley protective shell 14 and the motor protective shell 10 provide all-round protection for the transmission belt 13, the driving pulley 11, the driven pulley 12 and the shredding motor 9, avoiding damage to the equipment caused by external collisions and impurities, thereby improving the durability of the equipment and reducing the risk of equipment failure caused by external factors.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-functional rotary grass shredder, including a connecting base (1), characterized in that: A drive motor (2) is fixedly connected to the top of the connecting seat (1). A motor protective shell (5) is provided on the outside of the drive motor (2). The inner side wall of the motor protective shell (5) is fixedly connected to the outer side wall of the connecting seat (1). A drive gear (3) is fixedly connected to the output end of the drive motor (2). A driven gear (4) is meshed with the outside of the drive gear (3). A connector (7) is fixedly connected to the bottom of the driven gear (4). A gear protective shell (6) is fixedly connected to the bottom of the connecting seat (1). A protective cover (8) is fixedly connected to the bottom of the connector (7). A transmission assembly is fixedly connected to the top of the protective cover (8). The transmission assembly is used to deliver power to the crushing device.

2. The multifunctional rotary grass shredder according to claim 1, characterized in that: The transmission assembly includes a crushing motor (9), the bottom of which is fixedly connected to the top of the protective cover (8). The output end of the crushing motor (9) is fixedly connected to a drive pulley (11), which is connected to a driven pulley (12) via a transmission belt (13). The driven pulley (12) is fixedly connected to a cutter disc body (15).

3. The multifunctional rotary grass shredder according to claim 2, characterized in that: The crushing motor (9) is provided with a motor protective shell two (10) on the outside, and the bottom of the motor protective shell two (10) is fixedly connected to the top of the protective cover (8).

4. The multifunctional rotary grass shredder according to claim 2, characterized in that: Both the driving pulley (11) and the driven pulley (12) are provided with pulley protective shells (14), and the pulley protective shells (14) are fixedly connected to the outer side wall of the protective cover (8).

5. The multifunctional rotary grass shredder according to claim 2, characterized in that: Both ends of the cutter head body (15) are rotatably connected to the inside of the protective cover (8), and the cutter head body (15) is fixedly connected to the outside of the cutter head body (15).

6. The multifunctional rotary grass shredder according to claim 5, characterized in that: Each of the blade holders (16) has a blade (17) fixedly connected inside.

7. The multifunctional rotary grass shredder according to claim 2, characterized in that: The inner sidewalls of the protective cover (8) are all fixedly connected with saw blades (18).

8. The multifunctional rotary grass shredder according to claim 2, characterized in that: The bottom of each protective cover (8) is provided with a chain (19).

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