Lawn mower

Abstract

The utility model discloses a lawn mower, which relates to the technical field of mowers and comprises a frame, a tool apron sleeve block slidably sleeved on a rotating shaft I, a plurality of blades fixed on the side wall of the tool apron sleeve block, and a clamping strip slidably embedded on the inner wall of the tool apron sleeve block fixed on the outer wall of a sleeve. A traction assembly used for driving the sleeve to vertically slide in a reciprocating mode in the axial direction of the rotating shaft I is installed in the protective cover. According to the lawn mower, the arranged tool apron sleeve block drives the blade to rotate to cut and trim a lawn, in the trimming process, the translation frame in the traction assembly linearly moves in a reciprocating mode, the traction rod drives the sleeve to ascend and descend in a reciprocating mode, and the tool apron sleeve block can vertically move in the rotating process; in other words, the blades rotationally cut grass of different heights, the grass chopping degree is greatly improved, the situation that the grass winds the blades is effectively avoided, and the lawn trimming efficiency and the lawn trimming smoothness are remarkably improved by combining the combing effect of the comb teeth on the grass.

Description

Technical Field

[0001] This utility model relates to the field of lawn mower technology, specifically a lawn mower. Background Technology

[0002] A lawnmower, also known as a lawn mower, lawn trimmer, or lawn mower, is a mechanical tool used to trim lawns, vegetation, etc. It consists of a blade disc, motor, wheels, a walking mechanism, blades, and a handle. The blade disc drives the blades to rotate rapidly to trim the grass on the lawn.

[0003] Current lawnmowers have relatively fixed rotating blades that cannot move vertically during mowing, resulting in low grass chopping and grass easily getting tangled on the blades. This directly affects the normal operation of the lawnmower and significantly impacts the lawn trimming effect. To address these issues, a new lawnmower is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a lawn mower to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A lawn mower includes a frame with several wheels rotatably mounted on its bottom. A handle is fixed to the end of the frame. A protective cover is fixed to the frame. A vertically extending shaft I is rotatably mounted inside the protective cover and extends to the bottom of the frame. A blade holder is slidably sleeved on the shaft I. Several blades are fixed to the side wall of the blade holder. A retaining strip is fixed to the outer wall of the shaft I and slidably embedded in the inner wall of the blade holder. A motor is mounted on the protective cover. A power component for driving the shaft I to rotate is driven by the motor. A sleeve is slidably sleeved on the shaft I. A traction component for driving the sleeve to slide vertically back and forth along the axis of the shaft I is installed inside the protective cover. The lower end of the sleeve is rotatably connected to the blade holder.

[0007] As an improvement of this utility model: the power assembly includes a secondary gear and a primary gear respectively fixedly sleeved on the rotating shaft I and rotating shaft II, the secondary gear and the primary gear being meshed and connected, and the output shaft of the motor being driven by the primary gear through a pulley mechanism.

[0008] As an improvement of this utility model: the traction assembly includes a translation frame slidably installed inside the protective cover, a traction rod is hinged between the translation frame and the sleeve, a turntable is coaxially fixed to the output shaft of the motor, a connecting rod is eccentrically hinged to the turntable, and the end of the connecting rod away from the turntable is hinged to the translation frame.

[0009] As an improvement of this utility model: the traction assembly further includes a fixing plate fixed on the vehicle frame, a horizontally extending guide rod fixed on the fixing plate, the translation frame slidably sleeved on the guide rod, and a spring fixed between the translation frame and the fixing plate.

[0010] As an improvement of this utility model: an annular groove is provided on the tool holder sleeve block, and an annular plate fixed to the inner wall of the sleeve is rotatably installed in the annular groove.

[0011] As an improvement of this utility model: a lifting frame is vertically slidably installed on the frame, and several comb teeth arranged linearly at equal intervals are horizontally fixed at the bottom of the lifting frame, with the blade located above the comb teeth.

[0012] As an improvement of this utility model: a lifting block is fixed between the lifting frame and the sleeve, and the lifting block is vertically slidably connected to the protective cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses a blade holder sleeve to drive the blade to rotate, thereby cutting and trimming the lawn. During the trimming process, the translation frame in the traction component moves linearly and reciprocally, causing the pull rod to drive the sleeve to move up and down reciprocally. This allows the blade holder sleeve to move vertically during rotation, meaning the blade can rotate and cut grass at different heights, greatly improving the degree of grass shredding and effectively preventing grass from tangling with the blade. Combined with the comb teeth's combing effect on the grass, the efficiency and smoothness of lawn trimming are significantly improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A diagram from a particular perspective;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model after partial cross-section;

[0018] Figure 4 This is a schematic diagram showing the connection of components such as the rotating shaft I, sleeve, tool holder block, and blade in this utility model;

[0019] Figure 5 This utility model Figure 4 Exploded view of a partial structure;

[0020] Figure 6 This is a partial cross-sectional structural diagram of the sleeve in this utility model;

[0021] Figure 7 This is a schematic diagram of the traction component in this utility model;

[0022] Figure 8 This is a schematic diagram showing the connection between the lifting block, the lifting frame, and the comb teeth in this utility model.

[0023] In the diagram: 1-frame, 2-protective cover, 3-handrail, 4-wheel, 5-lifting block, 6-motor, 7-lifting frame, 8-comb teeth, 9-shaft I, 10-shaft II, 11-sleeve, 12-blade holder sleeve, 13-blade, 14-turntable, 15-pulley mechanism, 16-main gear, 17-secondary gear, 18-pull rod, 19-connecting rod, 20-translation frame, 21-clamping bar, 22-annular groove, 23-annular plate, 24-guide rod, 25-fixed plate, 26-spring. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below with reference to specific embodiments:

[0025] First Embodiment

[0026] Please see Figures 1-8 A lawn mower includes a frame 1, with several wheels 4 rotatably mounted on the bottom of the frame 1. A handle 3 is fixed to the end of the frame 1. A protective cover 2 is fixed on the frame 1. A rotating shaft I9 extending vertically to the bottom of the frame 1 is rotatably mounted inside the protective cover 2. A blade holder 12 is slidably sleeved on the rotating shaft I9. Several blades 13 are fixed to the side wall of the blade holder 12. A retaining strip 21 is fixed to the outer wall of the rotating shaft I9 and slidably embedded in the inner wall of the blade holder 12. A motor 6 is mounted on the protective cover 2. A power component for driving the rotating shaft I9 to rotate is driven to the motor 6. A sleeve 11 is slidably sleeved on the rotating shaft I9. A traction component for driving the sleeve 11 to slide vertically back and forth along the axial direction of the rotating shaft I9 is ​​installed inside the protective cover 2. The lower end of the sleeve 11 is rotatably connected to the blade holder 12.

[0027] When mowing the lawn with this lawnmower, the operator can move the frame 1 by pushing the handle 3 to change the mowing area. The motor 6 drives the transmission component to drive the rotating shaft I9 to rotate. The rotating shaft I9 drives the blade holder block 12 to rotate through the clamp 21, thereby realizing the rotational cutting of the lawn by the blade 13.

[0028] The power assembly includes a secondary gear 17 and a primary gear 16, which are respectively fixedly sleeved on rotating shaft I9 and rotating shaft II10. The secondary gear 17 and primary gear 16 are meshed together. The output shaft of motor 6 is connected to primary gear 16 via pulley mechanism 15. After motor 6 is started, the output shaft of motor 6 drives primary gear 16 to rotate via pulley mechanism 15. Primary gear 16 drives secondary gear 17 to rotate, which in turn drives rotating shaft I9 to rotate, thereby achieving the lawn trimming effect of blade 13.

[0029] Additionally, the traction assembly of this lawnmower includes a translation frame 20 slidably mounted within the protective cover 2. A pull rod 18 is hinged between the translation frame 20 and the sleeve 11. A turntable 14 is coaxially fixed to the output shaft of the motor 6. A connecting rod 19 is eccentrically hinged to the turntable 14, with one end of the connecting rod 19 away from the turntable 14 hinged to the translation frame 20. The traction assembly also includes a fixing plate 25 fixed to the frame 1. A horizontally extending guide rod 24 is fixed to the fixing plate 25. The translation frame 20 is slidably sleeved on the guide rod 24. A spring 26 is fixed between the translation frame 20 and the fixing plate 25.

[0030] While the motor 6 drives the pulley mechanism 15, the turntable 14 rotates synchronously. At this time, the turntable 14 drives the translation frame 20 to perform linear reciprocating motion through the connecting rod 19 connected to it. During the sliding process, the translation frame 20 is guided and limited by the guide rod 24 and the spring 26, so that the translation frame 20 has good stability and smoothness. The translation frame 20 drives the sleeve 11 to move vertically and reciprocally through the pull rod 18, thereby realizing that the sleeve 11 drives the blade holder block 12 to move vertically, so that the blade 13 can fully cut the grass on the lawn. The degree of grass cutting is significantly improved, effectively avoiding grass from tangling with the blade 13, greatly reducing the failure rate, and significantly improving the trimming efficiency and smoothness of the lawn by the blade 13.

[0031] Second Embodiment

[0032] Please see Figures 1-8 In addition to the first embodiment, the blade holder 12 is provided with an annular groove 22. An annular plate 23 fixed to the inner wall of the sleeve 11 is rotatably installed in the annular groove 22. During the rotation of the blade holder 12 by the rotating shaft I9 through the retaining strip 21, the blade holder 12 and the annular plate 23 rotate relative to each other. The annular plate 23 is connected to the annular groove 22, so that when the sleeve 11 moves vertically, the blade holder 12 can be moved vertically stably by the annular plate 23, thereby ensuring that the blade 13 cuts grass at different heights.

[0033] In addition, a lifting frame 7 is vertically slidably mounted on the frame 1 of this lawnmower. Several equally spaced linearly arranged comb teeth 8 are horizontally fixed at the bottom of the lifting frame 7, with the blade 13 positioned above the comb teeth 8. As the frame 1 moves, the lifting frame 7 moves along with it, thereby enabling the comb teeth 8 to comb the grass on the lawn, ensuring the grass is evenly distributed between the comb teeth 8. This effectively improves the degree of grass chopping and reduces the failure rate of the blade 13 stopping due to grass entanglement.

[0034] Furthermore, a lifting block 5 is fixed between the lifting frame 7 and the sleeve 11, and the lifting block 5 is vertically slidably connected to the protective cover 2. During the vertical movement of the sleeve 11, the sleeve 11 can drive the lifting frame 7 to move vertically back and forth through the lifting block 5, that is, the blade 13 and the comb 8 can move synchronously, and the comb 8 can vertically comb the grass, which greatly improves the grass trimming and cutting effect of the blade 13.

[0035] In summary, this utility model achieves lawn cutting and trimming by rotating the blade 13 through the blade holder 12. During the trimming process, the translation frame 20 in the traction component moves linearly and reciprocally, causing the pull rod 18 to drive the sleeve 11 to move up and down reciprocally. This enables the blade holder 12 to move vertically during rotation, allowing the blade 13 to rotate and cut grass at different heights, greatly improving the degree of grass shredding and effectively preventing grass from tangling around the blade 13. Combined with the comb teeth 8's combing effect on the grass, the lawn trimming efficiency and smoothness are significantly improved.

Claims

1. A lawn mower, comprising a frame (1), a plurality of wheels (4) rotatably mounted on the bottom of the frame (1), a handlebar (3) fixed to the end of the frame (1), and a protective cover (2) fixed on the frame (1), characterized in that, The protective cover (2) is rotatably mounted with a vertically extending shaft I (9) extending to the bottom of the frame (1). A blade holder block (12) is slidably sleeved on the shaft I (9). Several blades (13) are fixed on the side wall of the blade holder block (12). A retaining strip (21) is slidably embedded in the inner wall of the blade holder block (12) on the outer wall of the shaft I (9). A motor (6) is mounted on the protective cover (2). A power component for driving the shaft I (9) to rotate is connected to the motor (6). A sleeve (11) is slidably sleeved on the shaft I (9). A traction component for driving the sleeve (11) to slide vertically back and forth along the shaft I (9) is installed inside the protective cover (2). The lower end of the sleeve (11) is rotatably connected to the blade holder block (12).

2. The lawn mower according to claim 1, characterized in that, The power assembly includes a secondary gear (17) and a primary gear (16) respectively fixedly sleeved on the rotating shaft I (9) and rotating shaft II (10). The secondary gear (17) and the primary gear (16) are meshed and connected. The output shaft of the motor (6) is connected to the primary gear (16) through a pulley mechanism (15).

3. A lawn mower according to claim 1, characterized in that, The traction assembly includes a translation frame (20) slidably mounted inside the protective cover (2). A traction rod (18) is hinged between the translation frame (20) and the sleeve (11). A turntable (14) is coaxially fixed to the output shaft of the motor (6). A connecting rod (19) is eccentrically hinged to the turntable (14). One end of the connecting rod (19) away from the turntable (14) is hinged to the translation frame (20).

4. A lawn mower according to claim 3, characterized in that, The traction assembly also includes a fixing plate (25) fixed on the frame (1), a horizontally extending guide rod (24) fixed on the fixing plate (25), the translation frame (20) is slidably sleeved on the guide rod (24), and a spring (26) is fixed between the translation frame (20) and the fixing plate (25).

5. A lawn mower according to claim 1, characterized in that, The tool holder sleeve (12) has an annular groove (22), and an annular plate (23) fixed to the inner wall of the sleeve (11) is rotatably installed in the annular groove (22).

6. A lawn mower according to claim 1, characterized in that, A lifting frame (7) is vertically slidably mounted on the frame (1). Several comb teeth (8) are horizontally fixed at the bottom of the lifting frame (7) and are arranged linearly at equal intervals. The blade (13) is located above the comb teeth (8).

7. A lawn mower according to claim 6, characterized in that, A lifting block (5) is fixed between the lifting frame (7) and the sleeve (11), and the lifting block (5) is vertically slidably connected to the protective cover (2).

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