Greening lawn trimmer with obstacle avoidance function

Abstract

The utility model relates to the technical field of lawn trimmers, in particular to a greening lawn trimmer with an obstacle avoidance function. According to the technical scheme, the device comprises a bottom plate, a side plate, a motor, a pump shell and a collecting box, a mounting shaft is rotationally mounted in one end of the bottom plate, a mowing rope is arranged on the outer wall of the lower end of the mounting shaft, the side plate is arranged on the outer side of the mowing rope, bearing seats are arranged at the two ends of the side plate, a rotating shaft is arranged at the upper end of the side plate, and a torsional spring sleeves the outer side of the rotating shaft; an inner plate is arranged on the inner sides of the side plates, a pressure sensor is arranged at one end of the inner plate, a handle is arranged at the upper end of the bottom plate, a panel is arranged at the upper end of the handle, and buzzing alarms distributed in an annular array are arranged at the upper end of the panel. According to the lawn trimmer, the side plates are connected to the outer sides of the mowing ropes in a sleeving mode, the hit mowing ropes can be protected through the side plates, detection and alarm are conducted through the pressure sensors, obstacle avoidance is conducted in time, use safety is improved, and the lawn trimmer is prevented from being hit and damaged.

Description

Technical Field

[0001] This utility model relates to the field of lawn mower technology, and in particular to a lawn mower with obstacle avoidance function. Background Technology

[0002] Turf trimmers are professional equipment used for lawn maintenance. They use electric or gasoline power to drive high-speed rotating blades or cutting ropes to cut grass stems, thereby trimming the lawn and significantly improving trimming efficiency and lawn smoothness.

[0003] However, current lawn mowers lack obstacle avoidance capabilities, posing high safety risks. When encountering obstacles such as trees or flower beds, the equipment cannot automatically stop or detour. Insufficient manual intervention can lead to blade chipping, breakage, or even injury from flying debris after colliding with hard objects. Maintenance costs are also high, and prolonged impacts can cause mechanical failures such as blade deformation and drive shaft misalignment. Therefore, we propose a lawn mower with obstacle avoidance capabilities to address these problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a lawn mower with obstacle avoidance function.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lawn mower with obstacle avoidance function, comprising a base plate, side plates, a motor, a pump casing, and a collection box. An installation shaft is rotatably mounted inside one end of the base plate. A motor is fixed above the base plate. A ring-shaped array of mowing ropes is arranged on the outer wall of the lower end of the installation shaft. A ring-shaped array of side plates is arranged outside the mowing ropes. Bearing seats connected to the lower end of the base plate are provided at both ends of the side plates. A rotating shaft rotatably mounted inside a rotating seat is provided at the upper end of the side plates. Torsion springs connected to the bearing seats and side plates at their two ends are sleeved on the outer side of the rotating shaft. An inner plate fixedly connected to the base plate is provided inside the side plates. A pressure sensor is provided at one end of the inner plate. A handle is provided at the upper end of the base plate. A panel is provided at the upper end of the handle. A ring-shaped array of buzzer alarms, with the same number and orientation as the side plates, is provided at the upper end of the panel.

[0006] Preferably, the lower end of the base plate is provided with symmetrically distributed pulleys and a rotating seat, and the lower end of the rotating seat is rotatably mounted with pulley two. Pulleys one and two provide interactive support for the base plate, and the rotating seat allows pulley two to rotate in both directions, thereby adjusting the angle of the base plate.

[0007] Preferably, a collection box is fixed above the base plate, and a discharge pipe controlled by a valve is provided at the lower end of the collection box. The collection box collects the chopped grass and transports it to the outside through the discharge pipe.

[0008] Preferably, the upper end of the base plate has a discharge trough corresponding to the discharge pipe. The chopped grass is transported through the discharge pipe and then through the discharge trough to the base plate, preventing it from accumulating on the base plate.

[0009] Preferably, a pump casing is fixed above the base plate, and a pump shaft is rotatably mounted on the upper end of the base plate and rotatably mounted inside the pump casing. An impeller is sleeved on the outer wall of the pump shaft.

[0010] Preferably, the motor output end is provided with a first drive wheel and a second drive wheel. A second driven wheel with a radius smaller than the second drive wheel is sleeved on the outer wall of the pump shaft. A negative pressure pipe penetrating the collection box is provided at the suction end of the pump casing. A suction pipe with a corresponding negative pressure pipe at one end and located below the bottom plate at the other end of the collection box is provided. A suction cover is provided at one end of the suction pipe. Belts are sleeved on the outer walls of both the second drive wheel and the second driven wheel. When the second drive wheel rotates, it drives the second driven wheel to rotate faster through the belt, causing the pump shaft to drive the impeller to rotate inside the pump casing and generate suction force.

[0011] Preferably, a filter screen is provided at one end of the negative pressure pipe corresponding to the opening of the negative pressure pipe, and a driven wheel with a radius smaller than that of the driving wheel is sleeved on the outer wall of the mounting shaft. Both the driving wheel and the driven wheel are sleeved on the outer wall with belts. The filter screen intercepts the grass debris sucked up by the negative pressure pipe. When the driving wheel rotates, it drives the driven shaft to rotate through the belt, which in turn drives the mounting shaft to rotate faster.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model utilizes a high-speed rotating turntable with a nylon cutting rope to create a flexible cutting surface under angular acceleration. When the rope is swung at high speed, air resistance causes it to bend and sweep in a fan shape, using inertial impact force to break the grass stems in half, achieving a whip-like cutting. When the nylon rope encounters a hard object, it will only wear or break a small section, unlike metal blades which will scatter debris, significantly reducing the risk of personal injury. At the same time, a torsional elastic support side plate is set on the outside of the maximum rotation radius of the cutting rope. When the side plate is hit by an object, it presses against the pressure sensor. After the pressure sensor detects the signal, it will sound an alarm. Furthermore, the side plate is supported by the inner plate after being hit, preventing it from contacting the cutting rope, which plays a good role in obstacle avoidance and warning. The safety of the equipment is improved and the maintenance cost is reduced. Attached Figure Description

[0014] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the collection box of this utility model;

[0017] Figure 4 This is a front-view three-dimensional structural diagram of the motor of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the side plate of this utility model.

[0019] Reference numerals: 1. Base plate; 2. Pulley 1; 3. Pulley 2; 4. Rotating seat; 5. Discharge trough; 6. Suction hood; 7. Side plate; 8. Driven wheel 1; 9. Motor; 10. Pump casing; 11. Collection box; 12. Negative pressure pipe; 13. Suction pipe; 14. Handle; 15. Panel; 16. Filter screen; 17. Discharge pipe; 18. Buzzer alarm; 19. Pump shaft; 20. Impeller; 21. Mounting shaft; 22. Bearing seat; 23. Grass cutting rope; 24. Drive wheel 1; 25. Belt 1; 26. Drive wheel 2; 27. Belt 2; 28. Driven wheel 2; 29. ​​Inner plate; 30. Pressure sensor; 31. Torsion spring; 32. Rotating shaft. Detailed Implementation

[0020] 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.

[0021] like Figures 1-5 As shown, this utility model proposes a lawn mower with obstacle avoidance function, including a base plate 1, side plates 7, a motor 9, a pump housing 10, and a collection box 11. A mounting shaft 21 is rotatably mounted inside one end of the base plate 1. The motor 9 is fixed above the base plate 1. A ring-shaped array of mowing ropes 23 is arranged on the outer wall of the lower end of the mounting shaft 21. A ring-shaped array of side plates 7 is arranged on the outer side of the mowing ropes 23. Bearing seats 22 connected to the lower end of the base plate 1 are provided at both ends of the side plates 7. The side plates 7... The end is provided with a rotating shaft 32 rotatably installed inside the rotating seat 4. A torsion spring 31 is sleeved on the outside of the rotating shaft 32, which is connected to the bearing seat 22 and the side plate 7 respectively at both ends. An inner plate 29 is provided on the inside of the side plate 7 and is fixedly connected to the bottom plate 1. A pressure sensor 30 is provided at one end of the inner plate 29. A handle 14 is provided on the upper end of the bottom plate 1. A panel 15 is provided on the upper end of the handle 14. A buzzer alarm 18 is provided on the upper end of the panel 15 in a ring array, which is the same number as the side plate 7 and the distribution direction is the same.

[0022] The lower end of the base plate 1 is provided with symmetrically distributed pulley 1 2 and rotating seat 4, and the lower end of the rotating shaft 32 is rotatably mounted with pulley 2 3;

[0023] A collection box 11 is fixed above the base plate 1, and a discharge pipe 17 controlled by a valve is provided at the lower end of the collection box 11;

[0024] The upper end of the base plate 1 is provided with a discharge trough 5 corresponding to the discharge pipe 17;

[0025] A pump casing 10 is fixed above the base plate 1. A pump shaft 19 is rotatably mounted on the upper end of the base plate 1 and is rotatably mounted inside the pump casing 10. An impeller 20 is sleeved on the outer wall of the pump shaft 19.

[0026] The output end of the motor 9 is provided with a drive wheel 24 and a drive wheel 26. The outer wall of the pump shaft 19 is fitted with a driven wheel 28 with a radius smaller than that of the drive wheel 26. The suction end of the pump casing 10 is provided with a negative pressure pipe 12 that penetrates the collection box 11. One end of the collection box 11 is provided with a suction pipe 13 corresponding to the negative pressure pipe 12 and the other end is located below the bottom plate 1. One end of the suction pipe 13 is provided with a suction cover 6. The outer walls of the drive wheel 26 and the driven wheel 28 are both fitted with belts 27.

[0027] A filter screen 16 is provided at one end of the negative pressure pipe 12. A driven wheel 28 with a radius smaller than that of the drive wheel 24 is sleeved on the outer wall of the mounting shaft 21. Both the drive wheel 24 and the driven wheel 8 are sleeved on the outer wall with belts 25.

[0028] Based on the implementation steps of Embodiment 1: The operator starts the motor 9, and the drive wheel 24 drives the mounting shaft 21 to rotate via the belt 25, causing the mowing rope 23 to enter a high-speed rotation state, forming a fan-shaped cutting surface. Pushing the handle 14 moves the equipment to the edge of the lawn. The nylon mowing rope 23 bends into a fan shape under the action of angular acceleration. When the equipment approaches a tree or flower bed, the side plate 7 first contacts the obstacle, flips outward around the rotating shaft 32 and compresses the torsion spring 31. When the distance between the inner plate 29 and the side plate 7 decreases and the side plate 7 presses against the pressure sensor 30, the pressure sensor 30 detects the compression signal. After receiving the signal, the panel 15 triggers the buzzer alarm 18 in the corresponding direction. At the same time, the motor 9... The speed automatically drops to idle, the cutting rope 23 stops cutting to prevent it from breaking after colliding with hard objects. According to the alarm location prompt, the operator adjusts the direction of pulley 2 3 by rotating seat 4 to make the equipment go around the obstacle. The side plate 7 returns to its initial position under the reset force of torsion spring 31. Drive wheel 2 26 drives pump shaft 19 to rotate faster through belt 2 27. Impeller 20 generates negative pressure in pump casing 10. The grass clippings enter collection box 11 through suction hood 6 and suction pipe 13. Filter screen 16 intercepts grass clippings to prevent blockage of negative pressure pipe 12. When collection box 11 is full, the valve is opened to allow grass clippings to be discharged evenly through discharge pipe 17 and bottom plate 1 discharge groove 5 to avoid secondary cleaning.

[0029] When the equipment approaches trees or flower beds, the side plate 7 first contacts the obstacle, rotates outward around the pivot 32, and compresses the torsion spring 31. Through the linkage design of the side plate 7, pressure sensor 30, and buzzer, an alarm can be triggered upon collision. After being squeezed by the side plate 7, the grass on the lawn effectively enters the interior of the side plate 7 through the gaps in the side plate 7 and is cut by the rotating mowing rope 23. The nylon mowing rope 23 replaces the metal blade, and only wears and does not fly when it collides. With the automatic stop function, the risk of personnel injury is reduced, and failures such as blade deformation and drive shaft misalignment are avoided, reducing annual maintenance costs and extending the replacement cycle of the mowing rope 23. It completely solves the problems of collision injuries and blade damage caused by the lack of obstacle avoidance function in traditional equipment. By reducing the failure rate and extending the life of consumables, the total life cycle cost of a single unit is reduced. The buzzer location indication function shortens the training cycle for novice operators and transforms lawn mowing operations from passive response to active protection. It is especially suitable for high-end residential areas, theme parks, and other scenarios with strict requirements for safety and efficiency.

[0030] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lawn mower with obstacle avoidance function, comprising a base plate (1), side plates (7), a motor (9), a pump casing (10), and a collection box (11), characterized in that: A mounting shaft (21) is rotatably mounted inside one end of the base plate (1). A motor (9) is fixed above the base plate (1). A grass-cutting rope (23) arranged in a ring array is provided on the outer wall of the lower end of the mounting shaft (21). A side plate (7) arranged in a ring array is provided on the outer side of the grass-cutting rope (23). Bearing seats (22) connected to the lower end of the base plate (1) are provided at both ends of the side plate (7). A rotating shaft (32) rotatably mounted inside the rotating seat (4) is provided on the upper end of the side plate (7). The outer side is fitted with a torsion spring (31) that is connected to the bearing seat (22) and the side plate (7) at both ends respectively. The inner side of the side plate (7) is provided with an inner plate (29) that is fixedly connected to the bottom plate (1). A pressure sensor (30) is provided at one end of the inner plate (29). A handle (14) is provided at the upper end of the bottom plate (1). A panel (15) is provided at the upper end of the handle (14). A buzzer alarm (18) is provided at the upper end of the panel (15) in a ring array, with the same number and distribution direction as the side plate (7).

2. A lawn mower with obstacle avoidance function according to claim 1, characterized in that: The bottom plate (1) is provided with symmetrically distributed pulleys (2) and rotating seat (4), and the bottom of the rotating shaft (32) is rotatably mounted with pulleys (3).

3. A lawn mower with obstacle avoidance function according to claim 1, characterized in that: A collection box (11) is fixed above the base plate (1), and a discharge pipe (17) controlled by a valve is provided at the lower end of the collection box (11).

4. A lawn mower with obstacle avoidance function according to claim 3, characterized in that: The bottom plate (1) has an upper discharge trough (5) corresponding to the discharge pipe (17).

5. A lawn mower with obstacle avoidance function according to claim 1, characterized in that: A pump casing (10) is fixed above the base plate (1). A pump shaft (19) is rotatably mounted on the upper end of the base plate (1) and rotatably mounted inside the pump casing (10). An impeller (20) is sleeved on the outer wall of the pump shaft (19).

6. A lawn mower with obstacle avoidance function according to claim 5, characterized in that: The output end of the motor (9) is provided with a drive wheel 1 (24) and a drive wheel 2 (26). The outer wall of the pump shaft (19) is fitted with a driven wheel 2 (28) with a radius smaller than that of the drive wheel 2 (26). The suction end of the pump casing (10) is provided with a negative pressure pipe (12) that penetrates the collection box (11). One end of the collection box (11) is provided with a suction pipe (13) corresponding to the negative pressure pipe (12) and the other end is located below the bottom plate (1). One end of the suction pipe (13) is provided with a suction cover (6). The outer walls of the drive wheel 2 (26) and the driven wheel 2 (28) are both fitted with belt 2 (27).

7. A lawn mower with obstacle avoidance function according to claim 6, characterized in that: A filter screen (16) is provided at one end of the negative pressure pipe (12). A driven wheel (28) with a radius smaller than that of the drive wheel (24) is sleeved on the outer wall of the mounting shaft (21). A belt (25) is sleeved on the outer wall of both the drive wheel (24) and the driven wheel (8).

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