Quick-release blade fixing mechanism for weeding machine

Abstract

The utility model discloses a quick release type blade fixing mechanism for a weeding machine, which comprises a weeding machine base, a motor is fixed at the bottom of the weeding machine base, a fixing seat is arranged on the periphery of an output shaft at the bottom of the motor, the top surface of the fixing seat is fixedly connected with the bottom surface of the motor, the output shaft is matched with a coupling piece, and a blade is arranged at the bottom of the coupling piece. A mounting base is arranged outside the side wall of the coupling piece, the coupling piece is connected into the mounting base through a bearing, and quick-release buckles are symmetrically arranged on the side, facing the fixing base, of the mounting base and matched with a quick-release assembly in the fixing base. The quick-release buckle is matched with the clamping block, when the quick-release buckle is inserted into the connecting groove of the fixed seat, the clamping block is extruded until the clamping block is aligned with the clamping groove of the quick-release buckle, and the clamping block is automatically embedded into the clamping groove under the action of the pressing spring, so that the coupling piece and the fixed seat are clamped and fixed, and a blade can be quickly replaced without a tool; and the convenience of maintenance and use is improved.

Description

Technical Field

[0001] This utility model relates to the field of weeding machine technology, specifically a quick-release blade fixing mechanism for a weeding machine. Background Technology

[0002] In agriculture, especially in paddy field weeding, weeders are becoming increasingly widely used. Traditional paddy field weeders typically use screws or other fasteners to secure the blades. While this method ensures the stability of the blades during high-speed rotation, it presents several problems in practical use. For example, blades are prone to wear and damage in paddy field environments. Replacing blades and heads requires tools to remove the screws, but the unique conditions of paddy fields—high humidity and muddy conditions—make the screws highly susceptible to rust and corrosion, making them difficult to loosen during disassembly and reassembly. This process is cumbersome and time-consuming, increasing the maintenance difficulty for farmers. Furthermore, after prolonged use, the screws may loosen and fall off due to vibration and water corrosion, affecting the performance and safety of the weeder. Therefore, there is an urgent need in the market for a fastening mechanism that allows for quick blade replacement and has a stable structure. Utility Model Content

[0003] The purpose of this utility model is to provide a quick-release blade fixing mechanism for a weeder, which has the advantages of quick assembly and disassembly and a stable connection, thus solving the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A quick-release blade fixing mechanism for a weeder includes a weeder base, a motor fixed to the bottom of the weeder base, a fixed seat around the output shaft at the bottom of the motor, the top surface of the fixed seat being fixedly connected to the bottom surface of the motor, the output shaft being adapted to a coupling, a blade being provided at the bottom of the coupling, a mounting seat being provided on the side wall of the coupling, the coupling being connected to the mounting seat via a bearing, and quick-release buckles symmetrically provided on the side of the mounting seat facing the fixed seat, the quick-release buckles cooperating with quick-release components inside the fixed seat.

[0006] Preferably, the mounting base has an internal mounting groove, and a quick-release assembly is provided in the mounting groove. The quick-release assembly includes a push button, a connecting rod, and a push spring. The push button extends through the side wall of the mounting base, and the connecting rod is provided on the side of the push button facing the mounting groove.

[0007] Preferably, the connecting rod has an "L" shaped structure, one end of the connecting rod is fixedly connected to the pressing button, the other end of the connecting rod is provided with a locking block, and the side of the connecting rod away from the pressing button is connected to the side wall of the mounting groove through a pressing spring.

[0008] Preferably, the quick-release buckle has a slot that matches the buckle block.

[0009] Preferably, the fixing base has a connecting groove through which the quick-release buckle passes, and the connecting groove is connected to the mounting groove.

[0010] Preferably, the end of the card block facing the connecting groove has a rounded edge.

[0011] Preferably, the coupling has a hole seat, and a snap-fit ​​piece is fixed in the hole seat, the snap-fit ​​pieces being distributed in a rotationally symmetrical manner.

[0012] Preferably, the bottom end of the output shaft has a snap-fit ​​groove that matches the snap-fit ​​tab.

[0013] Preferably, the outer diameter of the output shaft is equal to the inner diameter of the bore seat, and the outer diameter of the coupling is equal to the inner diameter of the fixed seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model features a quick-release buckle that engages with a locking block. When the quick-release buckle is inserted into the connecting slot of the fixed base, it presses the locking block until the locking block aligns with the quick-release buckle slot. Under the action of the pressing spring, the locking block automatically embeds into the slot, thereby achieving the engagement and fixation of the coupling and the fixed base. Disassembly is similar. Users can quickly replace the blade without tools, improving the convenience of maintenance and use. Furthermore, it is not easy to loosen during use, improving the stability of the blade during high-speed rotation. Attached Figure Description

[0016] Figure 1 This is an overall structural assembly drawing of the present invention;

[0017] Figure 2 This is an exploded view of the overall structure of this utility model;

[0018] Figure 3 This is an isometric drawing of the coupling of this utility model;

[0019] Figure 4 This is a schematic diagram of the quick-release component of this utility model.

[0020] In the diagram: 1. Weeder base; 2. Motor; 3. Output shaft; 4. Fixed base; 5. Coupling; 6. Mounting base; 7. Bearing; 8. Quick-release buckle; 9. Press button; 10. Connecting rod; 11. Locking block; 12. Pressing spring; 13. Mounting groove; 14. Locking groove; 15. Connecting groove; 16. Blade; 17. Locking piece; 18. Locking groove; 19. Hole seat. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To address the inconvenience of disassembling and assembling blades in existing paddy field weed cutters, the following technical solution is provided. Please refer to [link / reference]. Figure 1-4 ;

[0023] A quick-release blade fixing mechanism for a weeder includes a weeder base 1, a motor 2 fixed to the bottom of the weeder base 1, and a fixing seat 4 provided around the output shaft 3 at the bottom of the motor 2. The top surface of the fixing seat 4 is fixedly connected to the bottom surface of the motor 2.

[0024] The output shaft 3 is adapted to the coupling 5. The bottom of the coupling 5 is provided with three blades 16, which are distributed in a rotationally symmetrical manner. The motor 2 drives the coupling 5 to rotate at high speed through the output shaft 3, and the coupling 5 drives the blades 16 to rotate at high speed, so that the blades 16 cut weeds.

[0025] The side wall of the coupling 5 is provided with a mounting seat 6. The coupling 5 is connected to the mounting seat 6 through a bearing 7. The coupling 5 and the mounting seat 6 can rotate relative to each other. In this technical solution, the mounting seat 6 is engaged with the fixed seat 4. The mounting seat 6 remains stationary, and the coupling 5 rotates with the output shaft 3.

[0026] The mounting base 6 is symmetrically provided with quick-release buckles 8 on the side facing the fixed base 4. The quick-release buckles 8 cooperate with the quick-release components in the fixed base 4. The quick-release components are located in the mounting groove 13 in the fixed base 4.

[0027] The quick-release assembly includes a push button 9, a connecting rod 10, and a pressing spring 12. The push button 9 extends through the side wall of the fixing base 4. The side of the push button 9 facing the mounting groove 13 has a connecting rod 10 with an "L" shape. One end of the connecting rod 10 is fixedly connected to the push button 9, and the side of the connecting rod 10 away from the push button 9 is connected to the side wall of the mounting groove 13 through the pressing spring 12. When force is applied to the push button 9, the push button 9 pushes the connecting rod 10 and compresses the pressing spring 12.

[0028] The other end of the connecting rod 10 is provided with a locking block 11. The end of the locking block 11 facing the connecting groove 15 has a rounded edge. The quick-release buckle 8 has a slot 14 that matches the locking block 11. The fixed seat 4 has a connecting groove 15 for the quick-release buckle 8 to pass through. The connecting groove 15 is connected to the mounting groove 13. The quick-release buckle 8 is inserted into the connecting groove 15. The upper end of the quick-release buckle 8 presses against the locking block 11. Since the locking block 11 has a rounded edge, the quick-release buckle 8 can smoothly penetrate and press the locking block 11 until the slot 14 reaches the position of the locking block 11. The locking block 11 is inserted into the slot 14 under the action of the elastic potential energy of the pressing spring 12, so that the mounting seat 6 and the fixed seat 4 are engaged, thereby connecting the coupling 5 and the blade 16 to the fixed seat 4.

[0029] The coupling 5 has a hole seat 19 inside. The outer diameter of the coupling 5 is equal to the inner diameter of the fixed seat 4, and the outer diameter of the output shaft 3 is equal to the diameter of the hole seat 19. That is, when the coupling 5 is inserted into the fixed seat 4, the output shaft 3 is also inserted into the hole seat 19.

[0030] A snap-fit ​​piece 17 is fixed inside the hole seat 19. The snap-fit ​​pieces 17 are distributed in a rotationally symmetrical manner. The bottom end of the output shaft 3 is provided with a snap-fit ​​groove 18 that matches the snap-fit ​​piece 17. When the output shaft 3 passes through the hole seat 19, the snap-fit ​​piece 17 passes through the snap-fit ​​groove 18. When the output shaft 3 rotates, the coupling 5 is driven to rotate through the snap-fit ​​groove 18 and the snap-fit ​​piece 17, which in turn drives the blade 16 to rotate and cut the weeds.

[0031] Working principle: Motor 2 drives coupling 5 to rotate at high speed through output shaft 3. The blade 16 at the bottom of coupling 5 rotates at high speed to cut weeds. A mounting base 6 is provided on the side wall of coupling 5. The mounting base 6 and the fixed base 4 are quickly installed and removed via quick-release buckles 8 and quick-release components. The quick-release components include a push button 9, a connecting rod 10, and a pressing spring 12. One end of the connecting rod 10 is fixedly connected to the push button 9, and the other end has a locking block 11. When the quick-release buckle 8 is inserted into the connecting groove 15 of the fixed base 4, it presses the rounded edge of the locking block 11 until the locking block 11 aligns with the slot 14 on the quick-release buckle 8. Under the action of the pressing spring 12, the locking block 11 automatically engages with the slot 14, thus securing coupling 5 to the fixed base 4. In addition, the coupling 5 is provided with a hole seat 19, and the snap-fit ​​piece 17 in the hole seat 19 matches the snap-fit ​​groove 18 at the bottom of the output shaft 3, so as to ensure that when the output shaft 3 rotates, it can drive the coupling 5 and the blade 16 on it to rotate together, effectively completing the weeding task.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A quick-release blade fixing mechanism for a weeder, comprising a weeder base (1), characterized in that, The bottom of the weeder base (1) is fixed with a motor (2). The output shaft (3) at the bottom of the motor (2) is provided with a fixed seat (4). The top surface of the fixed seat (4) is fixedly connected to the bottom surface of the motor (2). The output shaft (3) is adapted to the coupling (5). The bottom of the coupling (5) is provided with a blade (16). The side wall of the coupling (5) is provided with a mounting seat (6). The coupling (5) is connected to the mounting seat (6) through a bearing (7). The mounting seat (6) is symmetrically provided with quick-release buckles (8) on the side facing the fixed seat (4). The quick-release buckles (8) cooperate with the quick-release components in the fixed seat (4).

2. The quick-release blade fixing mechanism for a weeder according to claim 1, characterized in that, The mounting base (4) has an internal mounting groove (13) and a quick-release assembly. The quick-release assembly includes a push button (9), a connecting rod (10), and a pressing spring (12). The push button (9) extends through the side wall of the mounting base (4), and the push button (9) has a connecting rod (10) on the side facing the mounting groove (13).

3. The quick-release blade fixing mechanism for a weeder according to claim 2, characterized in that, The connecting rod (10) has an "L" shaped structure. One end of the connecting rod (10) is fixedly connected to the pressing button (9), and the other end of the connecting rod (10) is provided with a locking block (11). The side of the connecting rod (10) away from the pressing button (9) is connected to the side wall of the mounting groove (13) through a pressing spring (12).

4. The quick-release blade fixing mechanism for a weeder according to claim 3, characterized in that, The quick-release buckle (8) has a slot (14) that is compatible with the card block (11).

5. The quick-release blade fixing mechanism for a weeder according to claim 4, characterized in that, The fixing base (4) has a connecting groove (15) through which the quick-release buckle (8) passes, and the connecting groove (15) is connected to the mounting groove (13).

6. The quick-release blade fixing mechanism for a weeder according to claim 5, characterized in that, The card block (11) has a rounded edge at one end facing the connecting groove (15).

7. A quick-release blade fixing mechanism for a weeder according to claim 6, characterized in that, The coupling (5) has a hole seat (19) inside, and a snap-fit ​​piece (17) is fixed inside the hole seat (19). The snap-fit ​​pieces (17) are distributed in a rotationally symmetrical manner.

8. A quick-release blade fixing mechanism for a weeder according to claim 7, characterized in that, The bottom end of the output shaft (3) is provided with a snap-fit ​​groove (18) that matches the snap-fit ​​piece (17).

9. A quick-release blade fixing mechanism for a weeder according to claim 8, characterized in that, The outer diameter of the output shaft (3) is equal to the inner diameter of the hole seat (19), and the outer diameter of the coupling (5) is equal to the inner diameter of the fixed seat (4).

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