Hand-push type lawn mower

Abstract

The invention discloses a hand-push type lawn mower, and relates to the technical field of mowers, the hand-push type lawn mower comprises a first hood, the top of the first hood is fixedly connected with a first motor in a penetrating manner, an output shaft of the first motor is fixedly connected with a first cutter head, and the front side of the first hood is fixedly connected with a base; a second machine cover is adaptively connected to the front side of the top of the base, a second motor is fixedly connected to the top of the second machine cover in a penetrating mode, a second cutter head is fixedly connected to an output shaft of the second motor, a collecting hopper is fixedly connected to the rear side of the first machine cover, and a front-back adjusting device is installed above the first machine cover. The first motor is matched with the first cutter head to conduct main body large-area lawn weeding operation, when a narrow environment needs to be handled, the second cutter head can be moved to a proper position through matching of the front-back adjusting device and the up-down adjusting device, and then the second motor drives the second cutter head to conduct weeding operation. The device can be flexibly applied to wide and narrow environments, and is very convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of lawn mowers, and in particular to a hand-push lawn mower. Background Art

[0002] A lawn mower is also called a weed cutter, lawn mower, lawn trimmer, etc. A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. It consists of a cutter disc, an engine, a running wheel, a running mechanism, a blade, an armrest, and a control part. According to the travel mode, lawn mowers can generally be divided into towed, rear-push, mounted, and tractor-mounted types. The rear-push type is also a push lawn mower;

[0003] Common push lawn mowers mainly use an engine and a cutter disc to mow the grass. In order to improve the weeding efficiency, this type of structure is usually set larger. However, there are some shortcomings in actual use. For example, in narrow areas, such as between two flower beds, the main body of the lawn mower is difficult to effectively promote weeding due to its large size, and it is impossible to adjust different usage modes according to actual needs, which is very inconvenient to use;

[0004] To solve the above-mentioned deficiencies, the present application proposes a hand-push lawn mower. Summary of the invention

[0005] The present invention provides a hand-push lawn mower to solve the above technical problems.

[0006] To solve the above technical problems, the present invention provides a hand-push lawn mower, comprising a first hood, a first motor is fixedly connected to the top of the first hood, a first blade disc is fixedly connected to the output shaft of the first motor, a base is fixedly connected to the front side of the first hood, a second hood is adaptably connected to the front side of the top of the base, a second motor is fixedly connected to the top of the second hood, a second blade disc is fixedly connected to the output shaft of the second motor, a collecting bucket is fixedly connected to the rear side of the first hood, a cover plate is movably connected to the rear side of the top of the first hood through a coil spring rotating shaft, the cover plate is located on the top of the collecting bucket, a front and rear adjustment device is installed above the first hood, and an up and down adjustment device is installed above the second hood.

[0007] Preferably, the front and rear adjustment device includes a shell, a threaded rod is movably connected to the inside of the shell through a bearing, a reduction motor is fixedly connected to the top rear side of the shell, the reduction motor output shaft and the outer end of the threaded rod are respectively fixedly connected to a bevel gear, the two bevel gears are meshed with each other, a sleeve is sleeved on the outer end of the threaded rod, the threaded rod and the sleeve are threadedly connected, and a connecting arm is fixedly connected to both sides of the sleeve, the connecting arm is located inside the shell and extends to the front side of the shell, and the shell and the connecting arm are slidably connected.

[0008] Preferably, the shell is located above the first hood, two support plates distributed front and back are fixedly connected between the first hood and the shell, and the first motor is located between the two support plates.

[0009] Preferably, a retaining ring is fixedly connected to the outer end of the threaded rod, and the retaining ring is located between the bevel gear and the sleeve.

[0010] Preferably, the up and down adjustment device includes a first U-shaped frame, the first U-shaped frame is fixedly connected to the top of the second hood, the second motor is located on the inner side of the first U-shaped frame, the second U-shaped frame is sleeved on the top of the first U-shaped frame, the two sides of the first U-shaped frame are respectively slidably connected to the two sides inside the second U-shaped frame through slide rails, an electric push rod is fixedly connected to the top of the second U-shaped frame, the end of the electric push rod is fixedly connected to the top of the first U-shaped frame, and the front side of the connecting arm is fixedly connected to the rear side of the second U-shaped frame.

[0011] Preferably, a funnel-shaped partition is fixedly connected to the inside of the collecting hopper, and the funnel-shaped partition divides the inside of the collecting hopper into a first collecting chamber and a second collecting chamber. The first collecting chamber is located above the second collecting chamber, and the interior of the first hood is connected to the interior of the second collecting chamber. Air holes are provided on both sides of the collecting hopper, and the air holes are connected to the interior of the second collecting chamber.

[0012] Preferably, a filter is embedded on the rear side of the collecting hopper, a negative pressure fan is fixedly connected to the rear side of the collecting hopper, the filter is located between the first collecting chamber and the air inlet of the negative pressure fan, and a one-way valve is fixedly connected to the bottom of the funnel-shaped partition.

[0013] Preferably, a dust hopper is fixedly connected through the top of the second hood, the dust hopper is located on one side of the second motor, and a connecting hose is fixedly connected to the top of the dust hopper, the connecting hose passes through the collection hopper and extends to the inside of the first collection chamber.

[0014] Preferably, movable wheels are installed at the bottom of the first hood and the bottom of the base, and a handle is fixed at the top of the first hood by bolts.

[0015] Compared with the related art, the hand-push lawn mower provided by the present invention has the following beneficial effects:

[0016] The main large-area lawn weeding operation can be carried out by the first motor in conjunction with the first blade disc. When it is necessary to cope with a narrow environment, the second blade disc can be moved to a suitable position through the cooperation of the front and rear adjustment device and the up and down adjustment device, and then the weeding operation can be carried out by driving the second motor. At the same time, the grass clippings produced by weeding can be sucked into the first collection chamber through the cooperation of the negative pressure fan, the connecting hose and the dust hopper. Both wide and narrow environments can be flexibly coped with, and it is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a hand-push lawn mower proposed by the present invention from a first perspective;

[0018] Figure 2 A second perspective overall structural diagram of a hand-push lawn mower proposed by the present invention;

[0019] Figure 3 A schematic diagram of the collecting bucket structure of a hand-push lawn mower proposed by the present invention;

[0020] Figure 4 A schematic diagram of a funnel-shaped partition structure of a hand-push lawn mower proposed by the present invention;

[0021] Figure 5 A schematic diagram of the structure of a front and rear adjustment device of a hand-push lawn mower proposed by the present invention;

[0022] Figure 6 A side cross-sectional view of a front and rear adjustment device of a hand-push lawn mower proposed by the present invention;

[0023] Figure 7 A schematic diagram of the threaded rod and connecting arm structure of a hand-push lawn mower proposed by the present invention;

[0024] Figure 8 A schematic diagram of the structure of an up and down adjustment device of a hand-push lawn mower proposed by the present invention;

[0025] Fig. 9 The present invention provides a schematic structural diagram showing the use effect of a hand-push lawn mower.

[0026] Numbers in the figure: 1. first hood, 2. first motor, 3. first cutter disc, 4. base, 5. second hood, 6. second motor, 7. second cutter disc, 8. first U-shaped frame, 9. second U-shaped frame, 10. electric push rod, 11. shell, 12. support plate, 13. reduction motor, 14. threaded rod, 15. bevel gear, 16. retaining ring, 17. sleeve, 18. connecting arm, 19. collecting bucket, 20. funnel-shaped partition, 21. first collecting chamber, 22. second collecting chamber, 23. one-way valve, 24. filter, 25. negative pressure fan, 26. air vent, 27. dust hopper, 28. connecting hose, 29. fixing seat, 30. cover plate, 31. handle, 32. moving wheel. DETAILED DESCRIPTION

[0027] Example, by Figure 1-9The present invention comprises a first hood 1, a first motor 2 is fixedly connected through the top of the first hood 1, a first blade disc 3 is fixedly connected to the output shaft of the first motor 2, the first blade disc 3 is located inside the first hood 1, a base 4 is fixedly connected to the front side of the first hood 1, a second hood 5 is adaptably connected to the front side of the top of the base 4, a second motor 6 is fixedly connected to the top of the second hood 5, a second blade disc 7 is fixedly connected to the output shaft of the second motor 6, the second blade disc 7 is located inside the second hood 1, a collecting bucket 19 is fixedly connected to the rear side of the first hood 1, a cover plate 30 is movably connected to the rear side of the top of the first hood 1 through a coil spring rotating shaft, the cover plate 30 is located on the top of the collecting bucket 19, the top of the collecting bucket 19 is openly designed to facilitate the discharge of grass clippings collected therein, and during normal use, the cover plate 30 is pushed by the torsion spring on the rotating shaft and can be tightly covered on the collecting bucket 19 to block its opening, a front and rear adjustment device is installed above the first hood 1, and an up and down adjustment device is installed above the second hood 5.

[0028] The front and rear adjustment device includes a shell 11, a threaded rod 14 is movably connected to the inside of the shell 11 through a bearing, a reduction motor 13 is fixedly connected to the top rear side of the shell 11, the output shaft of the reduction motor 13 and the outer end of the threaded rod 14 are respectively fixedly connected with a bevel gear 15, the two bevel gears 15 are meshed with each other, the outer end of the threaded rod 14 is sleeved with a sleeve 17, the threaded rod 14 and the sleeve 17 are threadedly connected, and a connecting arm 18 is fixedly connected on both sides of the sleeve 17, the connecting arm 18 is located inside the shell 11 and extends to the front side of the shell 11, the shell 11 and the connecting arm 18 are slidably connected, and the front and rear adjustment device can drive the upper and lower adjustment devices and all the components connected thereto to move forward and backward together.

[0029] The shell 11 is located above the first hood 1, and two support plates 12 distributed front and back are fixedly connected between the first hood 1 and the shell 11. The first motor 2 is located between the two support plates 12. The shell 11 can be fixed above the first hood 1 through the support plates 12, and at the same time, the first hood 1 and the support plates 12 will not interfere with the first motor 2.

[0030] The outer end of the threaded rod 14 is fixedly connected with a retaining ring 16, and the retaining ring 16 is located between the bevel gear 15 and the sleeve 17. The retaining ring 16 limits the sleeve 17 to prevent the sleeve 17 from moving too far back on the threaded rod 14 and touching the bevel gear 15 to cause interference.

[0031] The up and down adjustment device includes a first U-shaped frame 8, which is fixedly connected to the top of the second hood 5, and the second motor 6 is located on the inner side of the first U-shaped frame 8. The second U-shaped frame 9 is sleeved on the top of the first U-shaped frame 8. The two sides of the first U-shaped frame 8 are respectively slidably connected to the two sides inside the second U-shaped frame 9 through slide rails. An electric push rod 10 is fixedly connected to the top of the second U-shaped frame 9, and the end of the electric push rod 10 is fixedly connected to the top of the first U-shaped frame 8. The front side of the connecting arm 18 is fixedly connected to the rear side of the second U-shaped frame 9. The first U-shaped frame 8 and the second U-shaped frame 9 are slidably connected through slide rails, which will not affect the up and down movement of the first U-shaped frame 8, and can also avoid the tilting problem of the first U-shaped frame 8 during movement. Moreover, the first U-shaped frame 8 will not interfere with the second motor 6 while being connected to the second hood 5.

[0032] A funnel-shaped partition 20 is fixedly connected to the inside of the collecting hopper 19, and the funnel-shaped partition 20 divides the inside of the collecting hopper 19 into a first collecting chamber 21 and a second collecting chamber 22, the first collecting chamber 21 is located above the second collecting chamber 22, the inside of the first hood 1 is connected to the inside of the second collecting chamber 22, air vents 26 are provided on both sides of the collecting hopper 19, the air vents 26 are connected to the inside of the second collecting chamber 22, a filter screen 24 is inlaid on the rear side of the collecting hopper 19, a negative pressure fan 25 is fixedly connected to the rear side of the collecting hopper 19, the filter screen 24 is located between the first collecting chamber 21 and the air inlet of the negative pressure fan 25, an opening is provided on the rear wall of the collecting hopper 19 between the air inlet of the negative pressure fan 25 and the first collecting chamber 21, and the filter screen 24 is installed in the opening, which does not affect the negative pressure suction of the negative pressure fan 25 to the first collecting chamber 21, and can also avoid the first collecting chamber The grass clippings in 21 are sucked out by the negative pressure fan 25 and can be filtered by the filter 24. A one-way valve 23 is fixedly connected to the bottom of the funnel-shaped partition 20. A dust hopper 27 is fixedly connected to the top of the second hood 5. The dust hopper 27 is located on one side of the second motor 6. A connecting hose 28 is fixedly connected to the top of the dust hopper 27. The connecting hose 28 passes through the collecting hopper 19 and extends to the inside of the first collecting chamber 21. The funnel-shaped partition 20 separates the first collecting chamber 21 and the second collecting chamber 22 in the collecting hopper 19. After the cover plate 30 is covered, the first collecting chamber 21 is in a sealed state. Starting the negative pressure fan 25 can suck the grass clippings under the second hood 5 into the first collecting chamber 21 according to the negative pressure. During this period, the one-way valve 23 is in a closed state due to the influence of the negative pressure. When the negative pressure state is released, the grass clippings falling on the funnel-shaped partition 20 will push the one-way valve 23 open according to gravity and fall into the second collecting chamber 22.

[0033] Moving wheels 32 are installed at the bottom of the first hood 1 and the bottom of the base 4. A handle 31 is fixed to the top of the first hood 1 by bolts. The handle 31 can be used to push the entire lawn mower to move and cut grass through the moving wheels 32, and the angle of the handle 31 is adjustable. You only need to loosen the bolts first and then manually adjust the angle between the handle 31 and the first hood 1, and then tighten the bolts.

[0034] Working principle:

[0035] The lawn mower is composed of a first hood 1 and a base 4 to form a chassis, which is then combined with a handle 31 and a moving wheel 32 to achieve hand-pushing movement. When mowing a large area of ​​a wide lawn, the first motor 2 is mainly used to drive the first blade disc 3 to mow the grass at the bottom of the first hood 1, and the grass clippings generated by mowing will directly enter the second collecting chamber 22 inside the collecting bucket 19 with the wind and inertia generated when the first blade disc 3 rotates. The grass clippings remain in the second collecting chamber 22, and the air is discharged from the air vents 26. When weeding in narrow places such as the gaps between flower beds, the first hood 1 cannot be pushed in due to its large size. At this time, the second hood 5 can be detached from the base 4 and extended out through the cooperation of the front and rear adjustment devices and the up and down adjustment devices. The specific operation requires starting the reduction motor 13 first. When the output shaft of the reduction motor 13 rotates, it is driven by two bevel gears 15 to The threaded rod 14 is driven to rotate. Restricted by the sliding connection between the shell 11 and the connecting arm 18, the sleeve 17 fixed between the two connecting arms 18 will only move forward along the threaded rod 14 with the connecting arm 18 as the threaded rod 14 rotates, and the sleeve 17 itself will not rotate with the rotation of the threaded rod 14. When the connecting arm 18 extends from the shell 11, it will push the entire up and down adjustment device and the second hood 5 to move forward. When the second hood 5 extends from the base 4, the second motor 6 can be used to drive the second blade disc 7 to rotate for mowing operations. The height of the second hood 5 can be adjusted according to needs, thereby adjusting the height of the second blade disc 7 when mowing. Specifically, the first U-shaped frame 8 can be pushed downward by the electric push rod 10. When the first U-shaped frame 8 moves downward, it will bring the second hood 5 and the second motor 6 and the second blade disc 7 on the second hood 5 to move downward synchronously, thereby realizing the up and down adjustment function;

[0036] As the second blade disc 7 rotates to mow the grass, some grass clippings will be generated. At this time, the negative pressure fan 25 can be started, and the negative pressure fan 25 sucks away the air in the first collecting chamber 21. At this time, the one-way valve 23 is automatically closed, so that a closed space is formed in the first collecting chamber 21, which can be sucked into a negative pressure state, so that the grass clippings under the second hood 5 can be negatively pressured and sucked into the first collecting chamber 21 through the dust hopper 27 and the connecting hose 28. After the grass clippings enter the first collecting chamber 21, they are filtered by the filter screen 24 and will not be sucked out of the first collecting chamber 21 by the negative pressure fan 25. When the mowing is finished and the negative pressure fan 25 is turned off, the first collecting chamber 21 is no longer in a negative pressure state. At the same time, the grass clippings in the first collecting chamber 21 are pressed on the one-way valve 23 again. According to the gravity of the grass clippings, the one-way valve 23 can be opened so that the grass clippings in the first collecting chamber 21 can enter the second collecting chamber 22 for unified collection. The grass clippings collected in the collecting bucket 19 can be discharged by opening the cover plate 30.

Claims

1. A push-type lawn mower, comprising a first hood (1), characterized in that: A first motor (2) is fixedly connected to the top of the first hood (1), and the output shaft of the first motor (2) is fixedly connected to a first cutter disc (3). A base (4) is fixedly connected to the front side of the first hood (1), and the front side of the top of the base (4) is adaptably connected to a second hood (5). A second motor (6) is fixedly connected to the top of the second hood (5), and the output shaft of the second motor (6) is fixedly connected to a second cutter disc (7). A collecting bucket (19) is fixedly connected to the rear side of the first hood (1), and a cover plate (30) is movably connected to the rear side of the top of the first hood (1) via a coil spring shaft, and the cover plate (30) is located on the top of the collecting bucket (19). A front-rear adjustment device is installed above the first hood (1), and an up-and-down adjustment device is installed above the second hood (5).

2. A hand-push lawn mower according to claim 1, characterized in that: The front-rear adjustment device comprises a housing (11), wherein a threaded rod (14) is movably connected to the inside of the housing (11) via a bearing, a reduction motor (13) is fixedly connected to the top rear side of the housing (11), an output shaft of the reduction motor (13) and an outer end of the threaded rod (14) are respectively fixedly connected to a bevel gear (15), the two bevel gears (15) are meshed with each other, a sleeve (17) is sleeved on the outer end of the threaded rod (14), the threaded rod (14) and the sleeve (17) are threadedly connected, and a connecting arm (18) is fixedly connected to both sides of the sleeve (17), the connecting arm (18) is located inside the housing (11) and extends to the front side of the housing (11), and the housing (11) and the connecting arm (18) are slidably connected.

3. A push-type lawn mower according to claim 2, characterized in that: The shell (11) is located above the first hood (1); two support plates (12) distributed front and rear are fixedly connected between the first hood (1) and the shell (11); and the first motor (2) is located between the two support plates (12).

4. A push-type lawn mower according to claim 2, characterized in that: The outer end of the threaded rod (14) is fixedly connected with a retaining ring (16), and the retaining ring (16) is located between the bevel gear (15) and the sleeve (17).

5. A push-type lawn mower according to claim 2, characterized in that: The up-and-down adjustment device comprises a first U-shaped frame (8), the first U-shaped frame (8) is fixedly connected to the top of the second hood (5), the second motor (6) is located inside the first U-shaped frame (8), a second U-shaped frame (9) is sleeved on the top of the first U-shaped frame (8), two sides of the first U-shaped frame (8) are respectively slidably connected to two sides of the inside of the second U-shaped frame (9) through slide rails, an electric push rod (10) is fixedly connected to the top of the inside of the second U-shaped frame (9), the end of the electric push rod (10) is fixedly connected to the top of the first U-shaped frame (8), and the front side of the connecting arm (18) is fixedly connected to the rear side of the second U-shaped frame (9).

6. A hand-push lawn mower according to claim 1, characterized in that: A funnel-shaped partition (20) is fixedly connected to the interior of the collecting hopper (19), and the funnel-shaped partition (20) divides the interior of the collecting hopper (19) into a first collecting chamber (21) and a second collecting chamber (22). The first collecting chamber (21) is located above the second collecting chamber (22), and the interior of the first hood (1) is connected to the interior of the second collecting chamber (22). Air holes (26) are provided on both sides of the collecting hopper (19), and the air holes (26) are connected to the interior of the second collecting chamber (22).

7. A push-type lawn mower according to claim 6, characterized in that: A filter screen (24) is embedded on the rear side of the collecting hopper (19), a negative pressure fan (25) is fixedly connected to the rear side of the collecting hopper (19), the filter screen (24) is located between the first collecting chamber (21) and the air inlet of the negative pressure fan (25), and a one-way valve (23) is fixedly connected to the bottom of the funnel-shaped partition (20).

8. A push-type lawn mower according to claim 6, characterized in that: A dust hopper (27) is fixedly connected to the top of the second hood (5), and the dust hopper (27) is located on one side of the second motor (6). A connecting hose (28) is fixedly connected to the top of the dust hopper (27), and the connecting hose (28) passes through the collection hopper (19) and extends to the interior of the first collection chamber (21).

9. A push-type lawn mower according to claim 1, characterized in that: Moving wheels (32) are installed at the bottom of the first hood (1) and the bottom of the base (4), and a handle (31) is fixed on the top of the first hood (1) by bolts.

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