Lawn mower and brake mechanism thereof

Abstract

The utility model discloses a mowing machine and a brake mechanism thereof, the brake mechanism adopts components such as a driving spring, a follow-up spring, a rotating seat, a traction rod and a rotating plate, and a tensioning wheel and a brake pad are arranged in a linkage manner; when the tensioning wheel is moved away and transmission between the power output wheel and the cutting transmission wheel is cut off, the brake pad is used for braking the blade which still rotates under the inertia effect, the whole structure is compact, operation is stable, and the brake device can be arranged on the single-cutter-disc riding type mower to brake the blade in time.

Description

Technical Field

[0001] This utility model relates to the field of garden equipment technology, and in particular to a lawnmower and its braking mechanism. Background Technology

[0002] As a type of large-scale lawn mowing machinery, ride-on lawnmowers have advantages such as powerful engines, high mowing efficiency, and suitability for various terrains and complex lawn conditions. However, they also have special safety requirements: under any circumstances, after the power source is cut off, the blades must stop within a specified time to avoid danger. This places strict demands on the practicality and reliability of the braking mechanism of ride-on lawnmowers, especially for single-disc ride-on lawnmowers, where the limited space on a single disc makes it difficult to arrange such a braking mechanism. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a compact braking mechanism that can be arranged on a single-blade riding lawnmower to stop the blades in time.

[0004] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows: a braking mechanism, including a power output wheel, a belt, and a chassis. The chassis is a cover-shaped structure with a downward opening, forming a cutting chamber inside and equipped with a cutting blade. The chassis is equipped with a cutting transmission wheel, a rotating seat, a spring seat, a spring column, a positioning seat, and a rotating plate. The power output wheel and the cutting transmission wheel are connected and driven by a belt. The cutting transmission wheel and the cutting blade are axially connected and fixed. The spring seat, spring column, and positioning seat are all fixedly connected to the chassis. A brake line is provided on the spring seat. One end of the rotating plate is rotatably connected to the positioning seat, and the other end is equipped with a brake pad. The middle of the rotating seat is rotatably connected to the chassis. One end of the rotating seat is equipped with a tension wheel and a traction rod is hinged between it and the end of the rotating plate where the brake pad is located. The other end is connected to the brake line with an active spring and to the spring column with a follower spring.

[0005] In some embodiments,

[0006] When the braking mechanism is in a non-braking state, the brake cable is taut, the tension wheel presses the belt, and the brake pads disengage from the cutting drive wheel;

[0007] When the braking mechanism is in the braking state, the brake cable is released, the tension wheel does not press the belt, and the brake pads press the cutting drive wheel.

[0008] In some embodiments, the cutting drive wheel, tension wheel, and brake pads are always located in the same plane.

[0009] In some embodiments, the rotating seat and the positioning seat are located on both sides of the cutting drive wheel on the chassis.

[0010] In some embodiments, the traction rod is Z-shaped, with its self-rotating seat bending towards the side where the cutting drive wheel is located and then bending in the opposite direction.

[0011] In some embodiments, the brake pads are detachably fixed to the rotating plate.

[0012] In some embodiments, a side drain is provided on one side of the chassis.

[0013] This utility model also provides a lawnmower that includes the above-mentioned braking mechanism.

[0014] Due to the application of the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0015] This utility model uses components such as an active spring, a follower spring, a rotating seat, a traction rod, and a rotating plate to link the tension wheel and the brake pads. It can stop the blades that are still rotating due to inertia by using the brake pads while the power output wheel and the cutting transmission wheel are disconnected when the tension wheel is removed. The overall structure is compact and the operation is stable. It can be installed on a single-blade disc ride-on lawnmower to stop the blades in time. Attached Figure Description

[0016] Figure 1 This is a perspective view of a first embodiment of the lawnmower proposed in this utility model.

[0017] Figure 2 This is a bottom view of the braking mechanism in Embodiment 1 of the lawnmower proposed in this utility model.

[0018] Figure 3 This is a top view of the braking mechanism in Embodiment 1 of the lawnmower proposed in this utility model.

[0019] Figure 4 This is a top view of the braking mechanism in Embodiment 2 of the lawnmower proposed in this utility model.

[0020] In the diagram: 1. Power take-off wheel; 2. Belt; 3. Chassis; 4. Cutting chamber; 5. Cutting blade; 6. Cutting transmission wheel; 7. Rotating seat; 8. Spring seat; 9. Spring column; 10. Positioning seat; 11. Rotating plate; 12. Brake cable; 13. Brake pad; 14. Tensioner wheel; 15. Traction rod; 16. Active spring; 17. Follower spring; 18. Side exhaust port; 19. Power source; 20. Side exhaust cover. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments:

[0022] Figures 1 to 3 This invention discloses one embodiment of the lawnmower proposed in this utility model.

[0023] like Figure 1 As shown, Embodiment 1 is a single-blade riding lawnmower, which includes a power source 19, a brake control component, and a brake mechanism, combined with... Figures 1 to 3 The braking mechanism includes a power output wheel 1, a belt 2, and a chassis 3. The power output wheel 1 is connected to a power source 19. The chassis 3 is a cover-shaped structure with a downward opening, forming a cutting chamber 4 inside and equipped with a cutting blade 5. A side outlet 18 is provided on one side of the chassis 3. A side outlet baffle and a side outlet guide hood 20 are detachably provided at the side outlet 18. When the side outlet baffle covers the side outlet 18, grass clippings are discharged from the opening below the chassis 3. When the side outlet baffle is open, grass clippings are discharged from the side outlet 18 and guided by the side outlet guide hood 20. The chassis 3 is equipped with a cutting drive wheel 6, a rotating seat 7, a spring seat 8, a spring column 9, a positioning seat 10, and a rotating plate 11. The power output wheel 1 and the cutting drive wheel 6 are connected and driven by the belt 2. The cutting drive wheel 6 and the cutting blade 5 are connected by a shaft. The spring seat 8, spring column 9, and positioning seat 10 are all fixedly connected to the chassis 3. The spring seat 8 is provided with a brake cable 12. The brake control component is connected to the brake cable 12 and is used to control the tension or release of the brake cable 12. The rotating seat 7 and the positioning seat 10 are located on both sides of the cutting transmission wheel 6 on the chassis 3. One end of the rotating plate 11 is rotatably connected to the positioning seat 10, and the other end is provided with a brake pad 13. The brake pad 13 can be detachably fixed to the rotating plate 11 by bolts for easy replacement. The middle of the rotating seat 7 is rotatably connected to the chassis 3. One end of it is provided with a tension wheel 14 and a traction rod 15 is hinged between it and the end of the rotating plate 11 where the brake pad 13 is located. The other end is connected to the brake cable 12 with an active spring 16 and to the spring column 9 with a follower spring 17.

[0024] Rotation point A is located at the point where the rotating base 7 is rotatably connected to the chassis 3. One end of the tension wheel 14 and the traction rod 15 can rotate synchronously around rotation point A. Rotation point B is located at the point where the rotating plate 11 is rotatably connected to the positioning seat 10. The other end of the brake pad 13 and the traction rod 15 can rotate in the same direction around rotation point B. The cutting transmission wheel 6, tension wheel 14, and brake pad 13 are always located in the same plane. When the braking mechanism is in a non-braking state, the brake cable 12 is tightened, the tension wheel 14 presses against the belt 2, and the brake pad 13 disengages from the cutting transmission wheel 6, ensuring smooth transmission between the power output wheel 1 and the cutting transmission wheel 6. When the braking mechanism engages, the brake control component releases the brake cable 12, the active spring 16 moves upward, and the follower spring 17 shortens, causing the tension wheel 14 and one end of the traction rod 15 to rotate clockwise. This, in turn, causes the brake pad 13 to rotate counterclockwise via the traction rod 15. Figure 3 The tensioning wheel 14 is not pressed against the belt 2, while the brake pad 13 presses against the cutting drive wheel 6. This stops the blade, which is still rotating due to inertia, from rotating while disconnecting the transmission between the power output wheel 1 and the cutting drive wheel 6.

[0025] Figure 4The braking mechanism in Embodiment 2 of the lawnmower proposed in this utility model is disclosed.

[0026] The main difference between the braking mechanism in Embodiment 1 and the braking mechanism in Embodiment 2 is that in the former, the traction rod 15 is Z-shaped, and its self-rotating seat 7 to the positioning seat 10 first bends toward the side where the cutting transmission wheel 6 is located and then bends in the opposite direction. The lower end of the rotating plate 11 is rotatably connected to the positioning seat 10. In the latter, the traction rod 15 is straight, and the upper end of the rotating plate 11 is rotatably connected to the positioning seat 10.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model. 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 protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A braking mechanism, comprising a power output wheel (1), a belt (2), and a chassis (3), wherein the chassis (3) is a cover-shaped structure with a downward opening, and a cutting chamber (4) is formed inside the chassis (3) and a cutting blade (5) is provided thereon; a cutting transmission wheel (6) is provided on the chassis (3); the power output wheel (1) and the cutting transmission wheel (6) are connected and driven by the belt (2); the cutting transmission wheel (6) and the cutting blade (5) are axially connected and fixed, characterized in that: The chassis (3) is also provided with a rotating seat (7), a spring seat (8), a spring column (9), a positioning seat (10), and a rotating plate (11). The spring seat (8), the spring column (9), and the positioning seat (10) are all fixedly connected to the chassis (3). The spring seat (8) is provided with a brake line (12). One end of the rotating plate (11) is rotatably connected to the positioning seat (10), and the other end is provided with a brake pad (13). The middle part of the rotating seat (7) is rotatably connected to the chassis (3). One end of the rotating seat (7) is provided with a tension wheel (14), and a traction rod (15) is hinged between the rotating plate (11) and the brake pad (13). The other end is connected to the brake line (12) with an active spring (16), and to the spring column (9) with a follower spring (17).

2. The braking mechanism according to claim 1, characterized in that: When the braking mechanism is in a non-braking state, the brake cable (12) is tightened, the tension wheel (14) presses against the belt (2), and the brake pad (13) disengages from the cutting transmission wheel (6); When the braking mechanism is in the braking state, the brake cable (12) is released, the tension wheel (14) does not press the belt (2), and the brake pad (13) presses the cutting transmission wheel (6).

3. The brake mechanism of claim 1, wherein: The cutting drive wheel (6), the tension wheel (14), and the brake pad (13) are always located in the same plane.

4. The brake mechanism of claim 1, wherein: The rotating seat (7) and the positioning seat (10) are located on both sides of the cutting transmission wheel (6) on the chassis (3).

5. The brake mechanism of claim 1, wherein: The traction rod (15) is Z-shaped, and from the rotating seat (7) to the positioning seat (10), it first bends toward the side where the cutting transmission wheel (6) is located and then bends in the opposite direction.

6. The brake mechanism of claim 1, wherein: The brake pad (13) is detachably fixed to the rotating plate (11).

7. The brake mechanism of claim 1, wherein: A side drain (18) is provided on one side of the chassis (3).

8. A lawnmower, characterized in that: Includes the braking mechanism as described in any one of claims 1 to 7.

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