Lawn mower with grass chopping function

Abstract

The utility model relates to the technical field of mowers, in particular to a mower with a grass chopping function, which comprises a frame body, a mounting plate, a motor device and a storage battery. The transmission mechanism comprises a first-stage gear arranged outside the motor shaft in a sleeving manner, a second-stage gear meshed with the first-stage gear, a worm gear coaxially fixed with the second-stage gear and a worm meshed with the worm gear, the first-stage gear is arranged above the mowing cutter head, and the worm is connected with a grass chopping device; the grass chopping device comprises a grass collecting box, a connecting rod arranged in the grass collecting box and a plurality of groups of grass chopping knives, and the connecting rod is fixedly connected with the worm. According to the mower, grass clippings can be collected while mowing is conducted, the collected grass clippings can be stirred and smashed, the storage space utilization rate and the weeding efficiency of the grass collecting box are improved, and the technical problems that a traditional blade type mower cannot clean smashed grass in time, and the space utilization rate of a grass collecting bag of a hob type mower is low can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a lawn mower with a grass chopping function. Background Art

[0002] A lawn mower, also known as a weed cutter, lawn mower, lawn trimmer, etc., is a mechanical tool used to trim lawns, vegetation, etc. It can trim the lawn by driving the blade to rotate at high speed through a motor.

[0003] Traditional simple blade lawn mowers often only have a blade structure for mowing, and are unable to clean and collect the cut grass bundles during use. Existing lawn mowers with grass collection bags are mostly reel-type lawn mowers. The cut grass bundles are collected into the grass collection bag by the inertia of the rotating reel. However, the cut weeds are messily piled in the grass collection bag, which takes up a lot of storage space. It is necessary to frequently stop the machine to disassemble the grass collection bag for cleaning, which greatly reduces the mowing efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a lawn mower with a grass-chopping function, which can collect grass clippings while mowing the grass, and can mix and crush the collected grass clippings, thereby improving the storage space utilization rate of the grass collection box and the weeding efficiency. It can effectively solve the technical problems that traditional blade lawn mowers cannot clean up grass clippings in time and the grass collection bag space utilization rate of roller lawn mowers is low.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0006] In one technical solution of the utility model, a lawn mower with a grass-chopping function is provided, comprising a frame body, a mounting plate fixedly connected to the frame body, a motor device and a battery arranged on the mounting plate, a motor shaft in the motor device vertically passes through the mounting plate, a transmission mechanism and a mowing disc are connected to the lower part of the motor shaft, an outer cover of the transmission mechanism is provided with a lower housing fixedly connected to the mounting plate, and the mowing disc is located below the lower housing;

[0007] The transmission mechanism includes a primary gear sleeved on the outside of the motor shaft, a secondary gear meshing with the primary gear, a worm wheel coaxial with and fixedly connected to the secondary gear, and a worm meshing with the worm wheel. The primary gear is arranged above the mowing disc. The primary gear and the mowing disc rotate synchronously with the motor shaft. One end of the worm wheel is rotatably connected to the lower housing, and the other end is connected to the grass chopping device.

[0008] The grass chopping device includes a grass collecting box arranged behind the mowing disc, a connecting rod arranged inside the grass collecting box, and a plurality of grass chopping knives. The connecting rod is fixedly connected to the worm gear, and the connecting rod is horizontally arranged in the grass collecting box. Both ends of the connecting rod are rotatably connected to the grass collecting box. The grass chopping knives are arranged at intervals along the axial direction of the connecting rod and are arranged inside the grass collecting box.

[0009] By adopting the above technical scheme, when mowing the lawn, the motor device is powered by a battery, and the motor shaft drives the mowing disc to rotate synchronously to weed the lawn, and the cut grass is collected into the grass collection box at the rear due to the rotating inertia of the blade; at the same time, the first-stage gear rotates synchronously with the motor shaft, and drives the second-stage gear and the worm gear to rotate synchronously through meshing transmission, and then drives the worm to rotate through the worm gear transmission, and then the worm drives the connecting rod and the grass cutting knife to rotate, and the weeds in the grass collection box are stirred and crushed into smaller particles, thereby improving the storage space utilization of the grass collection box and improving the mowing efficiency. The grass clippings in the grass collection box can be directly used for subsequent composting or fermentation to make feed, etc.

[0010] Furthermore, a positioning shaft is vertically penetrated below the mounting plate, the positioning shaft is fixedly connected to the mounting plate, the secondary gear and the worm wheel are movably sleeved on the outside of the positioning shaft, and the secondary gear is arranged above the worm wheel. When the motor device drives the primary gear to rotate, it can drive the secondary gear and the worm wheel to rotate synchronously around the positioning shaft, and then drive the worm to rotate, switching the horizontal rotation of the motor shaft to the vertical rotation of the worm, and then the worm drives the connecting rod and the grass cutting knife to rotate inside the grass collecting box, crushing and cutting the cut grass bundles stored in the grass collecting box, reducing the particles of grass clippings, facilitating storage and processing, so as to increase the storage capacity of the grass collecting box.

[0011] Furthermore, the battery is arranged behind the motor device, and an upper housing is arranged outside the motor device and the battery, and the upper housing is fixedly connected to the mounting plate. A heat dissipation hole is arranged on the upper housing so that the motor device and the battery can dissipate heat in time when the lawn mower is working.

[0012] Furthermore, the front side and the left and right sides of the mounting plate are all provided with baffles extending downwards, and the distance between the lower edge of the baffle and the ground is at least 5 cm. When the mowing disc rotates to cut the weeds, most of the cut weeds enter the grass collecting box along with the rotating mowing disc, and a small part of the weeds can be blocked by the baffles extending downwards to prevent them from splashing around.

[0013] Furthermore, the frame body includes an axle frame, an armrest frame and four wheels connected to both sides of the axle frame, and the armrest frame is provided with a start switch and a grip portion with a rough surface, and the start switch is electrically connected to the motor device and the battery. When the user holds the grip portion and pushes the lawn mower forward, the user controls the motor device to start or stop by pressing the start switch, so as to freely mow the lawn according to the lawn condition.

[0014] Furthermore, a grass inlet is provided on one side of the grass collecting box close to the mowing disc, and the height of the grass inlet from the ground is lower than the height of the mowing disc from the ground.

[0015] Furthermore, the bottom surface of the grass collecting box is provided with a discharge port, and a pull-out plate is inserted inside the bottom surface of the grass collecting box, and the pull-out plate covers the discharge port. When the grass clippings in the grass collecting box need to be cleaned, the pull-out plate only needs to be pulled out from the grass collecting box, and the grass clippings can be poured out from the discharge port.

[0016] Furthermore, the pull-out plate is provided with a plurality of water holes, the diameter of which does not exceed 2 cm. When the grass-chopping blade rotates and stirs the grass clippings, the juice produced can penetrate downward through the water holes and be discharged, which can further increase the capacity of the grass collecting box.

[0017] The lawn mower provided by the utility model has the following beneficial effects:

[0018] The utility model provides a lawn mower with a grass chopping function. When mowing the grass, the motor shaft of the motor device drives the mowing blade to rotate rapidly to weed, and the cut grass is collected in the grass collection box at the rear. At the same time, the motor device drives the transmission mechanism to engage in transmission layer by layer, and finally drives the connecting rod and the grass chopping blade to rotate, so as to mix and crush the weeds in the grass collection box. Therefore, the grass clippings can be collected and further mixed and crushed while mowing the grass, thereby improving the weeding efficiency and the storage space utilization rate of the grass collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the lawn mower with grass-chopping function in the utility model;

[0021] Figure 2 It is a schematic diagram of the exploded structure of the lawn mower with grass-chopping function in the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the lawn mower with grass-chopping function of the utility model without the upper casing;

[0023] Figure 4 It is a schematic diagram of the internal structure of the lawn mower with grass-chopping function of the utility model without the lower casing;

[0024] Figure 5 It is another three-dimensional structural schematic diagram of the lawn mower with grass chopping function in the utility model.

[0025] Explanation of the numbers in the figure: 1. Frame body; 11. Axle frame; 12. Handrail frame; 13. Wheel; 14. Start switch; 15. Grip; 2. Mounting plate; 21. Baffle; 3. Motor device; 31. Motor shaft; 4. Battery; 5. Transmission mechanism; 51. Primary gear; 52. Secondary gear; 53. Worm gear; 54. Worm; 55. Positioning shaft; 6. Mowing disc; 7. Lower casing; 8. Grass chopping device; 81. Grass collecting box; 82. Connecting rod; 83. Grass chopping knife; 84. Grass inlet; 85. Slag discharge port; 86. Pull-out plate; 87. Water permeable hole; 9. Upper casing. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, it does not mean that the features of this utility model are limited to the embodiment.

[0027] In the description of this embodiment, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top", "bottom", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to has a specific direction, is constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0028] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 3 As shown, in one embodiment of the utility model, a lawn mower with a grass cutting function is provided, comprising a frame body 1, a mounting plate 2 fixedly connected to the frame body 1, a motor device 3 arranged on the mounting plate 2, and a battery 4. Figure 4The motor shaft 31 of the motor (not shown) in the motor device 3 vertically penetrates the mounting plate 2, and the lower part of the motor shaft 31 is connected to the transmission mechanism 5 and the mowing blade 6. Figure 5 The outer cover of the transmission mechanism 5 is provided with a lower casing 7 fixedly connected to the mounting plate 2. The motor shaft 31 extends out of the lower casing 7 and is fixedly connected to the mowing disc 6. The lower casing 7 is used to protect the transmission mechanism 5 to prevent it from being entangled by weeds and affecting the rotation operation. The mowing disc 6 is located below the lower casing 7.

[0031] Specifically, refer to Figure 1 and Figure 2 The frame body 1 includes an axle frame 11, an armrest frame 12 and four wheels 13 connected to both sides of the axle frame 11. The armrest frame 12 is provided with a start switch 14 and a grip portion 15 with a rough surface. The start switch 14 is electrically connected to the motor device 3 and the battery 4. When the user holds the grip portion 15 to push the lawn mower forward, the user controls the motor device 3 to start or stop by pressing the start switch 14, so as to freely mow the lawn according to the lawn conditions. The "front" and "rear" directions mentioned below specifically refer to: the side where the operator stands holding the grip portion 15 during operation is the rear direction, and the side where the mowing disc 6 is located is the front direction.

[0032] refer to Figure 2 and Figure 4 The transmission mechanism 5 includes a primary gear 51 sleeved on the outside of the motor shaft 31, a secondary gear 52 meshing with the primary gear, a worm wheel 53 coaxial with and fixedly connected to the secondary gear 52, and a worm 54 meshing with the worm wheel 53. The primary gear 51 is arranged above the mowing blade 6. The primary gear 51 and the mowing blade 6 rotate synchronously with the motor shaft 31. One end of the worm 54 is rotatably connected to the lower housing 7, and the other end is connected to the grass cutting device 8. A positioning shaft 55 is vertically penetrated below the mounting plate 2. The positioning shaft 55 is fixedly connected to the mounting plate 2. The secondary gear 52 and the worm wheel 53 are both movably sleeved on the outside of the positioning shaft 55, and the secondary gear 52 is arranged above the worm wheel 53.

[0033] refer to Figure 4 and Figure 5 The grass chopping device 8 includes a grass collecting box 81 arranged behind the mowing blade 6, a connecting rod 82 arranged inside the grass collecting box 81, and a plurality of grass chopping knives 83. The connecting rod 82 is fixedly connected to the worm 54, the connecting rod 82 is horizontally arranged in the grass collecting box 81, and the two ends of the connecting rod 82 are rotatably connected to the grass collecting box 81. The grass chopping knives 83 are arranged at intervals along the axial direction of the connecting rod 82 and are arranged inside the grass collecting box 81.

[0034] refer to Figure 1 and Figure 3The battery 4 is arranged behind the motor device 3, and an upper housing 9 is arranged outside the motor device 3 and the battery 4, and the upper housing 9 is fixedly connected to the mounting plate 2. The upper housing 9 is provided with heat dissipation holes so that the motor device and the battery can dissipate heat in time when the lawn mower is working. Figure 4 The front side and the left and right sides of the mounting plate 2 are all provided with baffles 21 extending downwards, and the distance between the lower edge of the baffles 21 and the ground is at least 5 cm. When the mowing disc 6 rotates to cut the weeds, most of the cut weeds enter the grass collecting box along with the rotating mowing disc, and a small part of the weeds can be blocked by the baffles extending downwards to prevent them from splashing around.

[0035] refer to Figure 4 and Figure 5 A grass inlet 84 is provided on one side of the grass collecting box 81 near the mowing disc 6, and the height of the grass inlet 84 from the ground is lower than the height of the mowing disc 6 from the ground. A slag discharge port 85 is provided on the bottom surface of the grass collecting box 81, and a pull-out plate 86 is inserted inside the bottom surface of the grass collecting box 81, and the pull-out plate 86 covers the slag discharge port 85. When it is necessary to clean the grass clippings in the grass collecting box 81, just pull out the pull-out plate 86 from the grass collecting box 81, and the grass clippings can be poured out from the slag discharge port 85. A plurality of water permeable holes 87 are provided on the pull-out plate 86, and the aperture of the water permeable holes 87 does not exceed 2 cm. In the process of the grass cutting knife 83 rotating and stirring the grass clippings, the juice produced can penetrate downward along the water permeable holes 87 and be discharged, which can further increase the capacity of the grass collecting box 81.

[0036] When the lawn mower of the utility model is in use:

[0037] When mowing the lawn, the user holds the grip 15 to push the lawn mower forward, controls the motor device 3 to start by pressing the start switch 14, and the motor shaft 31 drives the mowing disc 6 to rotate synchronously to weed the lawn, and the cut grass is collected in the grass collection box 81 at the rear; at the same time, the first-stage gear 51 rotates synchronously with the motor shaft 31, and drives the second-stage gear 52 and the worm gear 53 to rotate synchronously through meshing transmission, and then drives the worm 54 to rotate through the worm gear 53, and then the worm 54 drives the connecting rod 82 and the grass cutting knife 83 to rotate, and the weeds in the grass collection box 81 are stirred and crushed into smaller particles, thereby increasing the storage capacity of the grass collection box, and the grass clippings in the grass collection box can be directly used for subsequent composting or fermentation to make feed, etc.

[0038] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Therefore, any technical solution that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A lawn mower with a grass-chopping function, characterized in that: The utility model comprises a frame body (1), a mounting plate (2) fixedly connected to the frame body (1), a motor device (3) and a storage battery (4) arranged on the mounting plate (2); a motor shaft (31) in the motor device (3) vertically penetrates the mounting plate (2); a transmission mechanism (5) and a mowing blade (6) are connected to the lower part of the motor shaft (31); an outer cover of the transmission mechanism (5) is provided with a lower housing (7) fixedly connected to the mounting plate (2); and the mowing blade (6) is located below the lower housing (7); The transmission mechanism (5) comprises a primary gear (51) sleeved on the outside of the motor shaft (31), a secondary gear (52) meshingly connected to the primary gear, a worm wheel (53) coaxially and fixedly connected to the secondary gear (52), and a worm (54) meshingly connected to the worm wheel (53); the primary gear (51) is arranged above the mowing blade (6); the primary gear (51) and the mowing blade (6) rotate synchronously with the motor shaft (31); one end of the worm (54) is rotatably connected to the lower housing (7), and the other end is connected to the grass chopping device (8); The grass chopping device (8) comprises a grass collecting box (81) arranged behind the grass cutting disc (6), a connecting rod (82) arranged inside the grass collecting box (81) and a plurality of grass chopping knives (83), wherein the connecting rod (82) is fixedly connected to the worm gear (54), the connecting rod (82) is horizontally arranged inside the grass collecting box (81), and the two ends of the connecting rod (82) are rotatably connected to the grass collecting box (81), and the grass chopping knives (83) are arranged at intervals along the axial direction of the connecting rod (82) and are arranged inside the grass collecting box (81).

2. A lawn mower with grass-chopping function according to claim 1, characterized in that: A positioning shaft (55) is vertically penetrated below the mounting plate (2), the positioning shaft (55) is fixedly connected to the mounting plate (2), the secondary gear (52) and the worm gear (53) are both movably sleeved on the outside of the positioning shaft (55), and the secondary gear (52) is arranged above the worm gear (53).

3. The lawn mower with grass-chopping function according to claim 1, characterized in that: The storage battery (4) is arranged at the rear of the motor device (3), and an upper casing (9) is arranged on the outer cover of the motor device (3) and the storage battery (4), and the upper casing (9) is fixedly connected to the mounting plate (2).

4. The lawn mower with grass-chopping function according to claim 1, characterized in that: The front side and the left and right sides of the mounting plate (2) are provided with baffles (21) extending downwards, and the distance between the lower edge of the baffle (21) and the ground is at least 5 centimeters.

5. The lawn mower with grass cutting function according to claim 1, characterized in that: The frame body (1) comprises an axle frame (11), an armrest frame (12) and four wheels (13) connected to both sides of the axle frame (11); the armrest frame (12) is provided with a start switch (14) and a gripping portion (15) with a rough surface; the start switch (14) is electrically connected to the motor device (3) and the storage battery (4).

6. The lawn mower with grass-chopping function according to claim 1, characterized in that: A grass inlet (84) is provided on one side of the grass collecting box (81) close to the grass cutting blade (6), and the height of the grass inlet (84) above the ground is lower than the height of the grass cutting blade (6) above the ground.

7. The lawn mower with grass-chopping function according to claim 1, characterized in that: The bottom surface of the grass collecting box (81) is provided with a slag discharge port (85), and a pull-out plate (86) is inserted inside the bottom surface of the grass collecting box (81), and the pull-out plate (86) covers the slag discharge port (85).

8. The lawn mower with grass-chopping function according to claim 7, characterized in that: The pull-out plate (86) is provided with a plurality of water-permeable holes (87), and the diameter of the water-permeable holes (87) does not exceed 2 cm.

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