Base structure of backpack mower and mower

Abstract

The base structure comprises an operating rod and a cutting disc, a control box is arranged at one end of the operating rod, straps are arranged on the surface of the control box, a protective shell used for protecting the cutting disc is arranged on the surface of the cutting disc, and the operating rod is connected with the protective shell. An adjusting assembly used for adjusting the protection height of the protection shell is arranged in the protection shell, a rotating disc on one side of the protection shell is screwed to rotate, so that the rotating disc drives a set of threaded rods to rotate, the rotating threaded rods drive a first chain wheel to rotate, and therefore the first chain wheel drives a second chain wheel to rotate through a chain; the two sets of threaded rods rotate to drive the adjusting plates in threaded connection with the threaded rods to move out of the protective shell, so that the height of the protective shell is increased, the mowing height of the cutting disc is adjusted, and the height of the protective shell is adjusted according to mowing of different heights required by different lawns; and the requirements of mowing heights of different lawns are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of backpack lawn mowers, and in particular relates to a base structure of a backpack lawn mower and the lawn mower. Background Art

[0002] A backpack lawn mower, also known as a lawn mower, is a mechanical tool that can be carried on the human body to mow the lawn. It consists of a cutter disc, an engine, running wheels, and a base. The cutter disc is mounted on the running wheels, the cutter disc is equipped with an engine, and the output shaft of the engine is equipped with a blade. The base is arranged outside the blade to protect the blade and the base can be placed on the ground to prevent the blade from contacting the ground.

[0003] The existing backpack lawn mower drives the blade disc to rotate through the engine, and the blade disc drives several blades on the surface to cut the lawn by utilizing the high-speed rotation of the engine, thereby quickly weeding. However, since the base is arranged on the periphery of the blade, the height of the base is the height of the blade cutting the grass, and the height of the base is fixed. Therefore, the weeding height is fixed when weeding the lawn. However, when weeding, the weeding height needs to be adjusted according to the height and density of the lawn to avoid damaging the lawn by cutting too low when weeding. Since the height of the base is fixed, it is inconvenient to adjust the weeding height of the blade when weeding. Utility Model Content

[0004] The purpose of the utility model is to provide a base structure of a backpack lawn mower and a lawn mower to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a base structure of a backpack lawn mower, comprising:

[0006] An operating rod, one end of which is provided with a control box, and a shoulder strap is provided on the surface of the control box;

[0007] A cutting disc is provided at the other end of the operating rod for cutting weeds. A protective shell for protecting the cutting disc is provided on the surface of the cutting disc. An adjusting component for adjusting the protective height of the protective shell is provided in the protective shell. The adjusting plate is adjusted by the threaded rod of the adjusting component so that the adjusting plate can lengthen the protective height of the protective shell and change the mowing height of the cutting disc.

[0008] Preferably, the adjustment assembly includes a turntable and a first sprocket, the threaded rods are provided in two groups and are rotatably connected to adjustment grooves provided in the protective shell, the first sprocket is fixedly connected to one group of threaded rods, and the turntable is fixedly connected to the threaded rod located at one end of the first sprocket.

[0009] Preferably, a second sprocket is fixedly connected to the surface of another group of threaded rods, and the second sprocket is connected to the first sprocket via a chain transmission.

[0010] Preferably, the adjustment plates are provided in two groups and the two groups of adjustment plates are respectively threadedly connected to the surface of the threaded rod.

[0011] Preferably, a slide groove is provided in the protective shell, and the two sides of the adjustment plate are slidably connected to the slide groove through sliders. When the adjustment plate moves, the slider can slide in the slide groove, thereby enhancing the stability of the movement of the adjustment plate.

[0012] Preferably, a motor is provided on the top of the protective shell, and the output shaft of the motor rotates through the protective shell and is fixedly connected to the cutting disk. The other end of the operating rod is connected to the motor, and the motor is electrically connected to the control box. A battery is provided in the control box to provide power for the motor.

[0013] A lawn mower comprises the base structure of the backpack lawn mower.

[0014] Preferably, it also includes an adjusting rod, which is fixedly connected to the operating rod, the surface of the adjusting rod is slidably connected to a roller frame and the surface of the roller frame is rotatably connected to a roller, the surface of the adjusting rod is provided with a plurality of threaded holes, the surface of the roller frame is provided with bolts threadedly connected to the threaded holes, and the bolts are hand-tightened bolts, which are convenient for manually tightening the bolts.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By adjusting the adjustment plate in the protective shell according to the required mowing length, the turntable on one side of the protective shell is rotated, so that the turntable drives a group of threaded rods to rotate, and the rotating threaded rods drive the first sprocket to rotate, so that the first sprocket drives the second sprocket to rotate through the chain, so that the other group of threaded rods rotate, and the rotation of the two groups of threaded rods drives the adjustment plate threadedly connected thereto to move outside the protective shell, thereby increasing the height of the protective shell, thereby adjusting the mowing height of the cutting disc, and thus adjusting the height of the protective shell according to the different mowing heights required for different lawns to meet the needs of different lawn mowing heights.

[0017] After adjusting the height of the protective shell, the control box is carried on the back of the human body through the shoulder strap, and the lawn is mowed by holding the operating lever. While mowing the lawn, the roller at the bottom of the operating lever can help the mower roll on the lawn surface, thereby reducing the friction and resistance between the mower and the ground. The roller can roll with the lawn surface to assist the movement of the manual hand-held operating lever, which greatly reduces the force required for the user to operate the lawn mower and makes mowing work easier and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a front view of the protective shell of the utility model;

[0020] Figure 3 The figure is a schematic diagram of the structure of the roller frame and the roller of the utility model.

[0021] In the figure: 1. operating lever; 2. control box; 3. shoulder strap; 4. cutting disc; 5. protective shell; 6. adjustment assembly; 7. adjustment plate; 8. threaded rod; 9. turntable; 10. first sprocket; 11. adjustment slot; 12. second sprocket; 13. chain; 14. slide slot; 15. slider; 16. motor; 17. adjustment lever; 18. roller frame; 19. roller; 20. threaded hole; 21. bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-3 The base structure of a backpack lawn mower shown in the figure comprises:

[0024] An operating rod 1, one end of which is provided with a control box 2, and a shoulder strap 3 is provided on the surface of the control box 2;

[0025] A cutting disc 4 is provided at the other end of the operating rod 1 for cutting weeds. A protective shell 5 for protecting the cutting disc 4 is provided on the surface of the cutting disc 4. An adjusting component 6 for adjusting the protective height of the protective shell 5 is provided inside the protective shell 5. The adjusting plate 7 is adjusted by the threaded rod 8 of the adjusting component 6 so that the adjusting plate 7 can lengthen the protective height of the protective shell 5 and change the mowing height of the cutting disc 4.

[0026] The adjustment assembly 6 includes a turntable 9 and a first sprocket 10. The threaded rod 8 is provided in two groups and is rotatably connected to an adjustment slot 11 provided in the protective shell 5. The first sprocket 10 is fixedly connected to one group of threaded rods 8, and the turntable 9 is fixedly connected to the threaded rod 8 at one end of the first sprocket 10.

[0027] A second sprocket 12 is fixedly connected to the surface of another set of threaded rods 8 . The second sprocket 12 is connected to the first sprocket 10 through a chain 13 . When the first sprocket 10 rotates, the second sprocket 12 can be driven to rotate through the chain 13 .

[0028] The adjusting plates 7 are provided with two groups, and the two groups of adjusting plates 7 are respectively threadedly connected to the surface of the threaded rod 8 , and when the threaded rod 8 rotates, the adjusting plates 7 can be driven to move on the surface of the threaded rod 8 .

[0029] A slide groove 14 is provided in the protective shell 5 , and two sides of the adjustment plate 7 are slidably connected to the slide groove 14 through sliders 15 . When the adjustment plate 7 moves, it can slide in the slide groove 14 through the sliders 15 , thereby enhancing the stability of the movement of the adjustment plate 7 .

[0030] A motor 16 is provided on the top of the protective shell 5, and the output shaft of the motor 16 rotates through the protective shell 5 and is fixedly connected to the cutting disc 4. The other end of the operating rod 1 is connected to the motor 16, and the motor 16 is electrically connected to the control box 2. By starting the motor 16, the cutting disc 4 is driven to rotate, so that the lawn is mowed by the rotating cutting disc 4.

[0031] A lawn mower comprises the base structure of the backpack lawn mower.

[0032] It also includes an adjusting rod 17, which is fixedly connected to the operating rod 1, a roller frame 18 is slidably connected to the surface of the adjusting rod 17, and a roller 19 is rotatably connected to the surface of the roller frame 18, a plurality of threaded holes 20 are provided on the surface of the adjusting rod 17, and bolts 21 provided on the surface of the roller frame 18 are threadedly connected to the threaded holes 20. According to the adjustment of the adjusting plate 7, the bolts 21 can be screwed to loosen the roller frame 18 and slide on the surface of the adjusting rod 17. After adjusting the roller 19 to the most suitable height when in contact with the ground, the bolts 21 are screwed into the threaded holes 20 to fix the adjusted roller frame 18.

[0033] The base structure and lawn mower of the backpack lawn mower adjust the adjustment plate 7 in the protective shell 5 according to the required mowing length, and screw the turntable 9 on one side of the protective shell 5 to rotate, so that the turntable 9 drives a group of threaded rods 8 to rotate, and the rotating threaded rods 8 drive the first sprocket 10 to rotate, so that the first sprocket 10 drives the second sprocket 12 to rotate through the chain 13, so that another group of threaded rods 8 rotates, and the two groups of threaded rods 8 rotate to drive the adjustment plate 7 threadedly connected thereto to move outside the protective shell 5, so that the height of the protective shell 5 is increased by moving the adjustment plate 7 outside the protective shell 5, and the height of the cutting disc 4 from the ground is adjusted, so as to adjust the height of the grass cut by the cutting disc 4, so that according to the different lawns requiring different mowing heights, the height of the protective shell 5 is adjusted to meet the needs of different lawns, and it is slow and convenient to operate. Figure 2As shown, when the adjustment plate 7 is located in the protective shell 5, it is the minimum height of the cutting disc 4 for mowing. As the adjustment plate 7 moves out of the protective shell 5, the height of the cutting disc 4 from the ground increases, and the height of the mowing increases with the adjustment of the adjustment plate 7.

[0034] After adjusting the height of the protective shell 5, the control box 2 is carried on the back of the human body through the shoulder strap 3, and the lawn is mowed by holding the operating lever 1. While mowing the lawn, the roller 19 at the bottom of the operating lever 1 can help the lawn mower to roll on the lawn surface, thereby reducing the friction and resistance between the lawn mower and the ground. The roller 19 can roll with the lawn surface to assist the manual hand-held operating lever 1 to move, which greatly reduces the force required for the user to operate the lawn mower, making mowing easier and more efficient. As the adjustment plate 7 is adjusted, the bolt 21 can be screwed to loosen the roller frame 18 and slide on the surface of the adjustment rod 17. After adjusting the most suitable height when the roller 19 contacts the ground, the bolt 21 is screwed into the threaded hole 20 to fix the adjusted roller frame 18.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A base structure of a backpack lawn mower, characterized in that: include: An operating rod (1), wherein a control box (2) is provided at one end of the operating rod (1), and a shoulder strap (3) is provided on the surface of the control box (2); A cutting disc (4) is provided at the other end of an operating rod (1) for cutting weeds. A protective shell (5) for protecting the cutting disc (4) is provided on the surface of the cutting disc (4). An adjusting component (6) for adjusting the protective height of the protective shell (5) is provided inside the protective shell (5). The adjusting plate (7) is adjusted by a threaded rod (8) of the adjusting component (6) so that the adjusting plate (7) lengthens the protective height of the protective shell (5) and changes the grass cutting height of the cutting disc (4).

2. The base structure of a backpack lawn mower according to claim 1, characterized in that: The adjustment assembly (6) comprises a rotating disk (9) and a first sprocket (10); the threaded rods (8) are provided in two groups and are both rotatably connected to adjustment slots (11) provided in the protective shell (5); the first sprocket (10) is fixedly connected to one group of the threaded rods (8); and the rotating disk (9) is fixedly connected to the threaded rod (8) located at one end of the first sprocket (10).

3. The base structure of a backpack lawn mower according to claim 2, characterized in that: A second sprocket (12) is fixedly connected to the surface of the other group of threaded rods (8), and the second sprocket (12) is transmission-connected to the first sprocket (10) via a chain (13).

4. The base structure of a backpack lawn mower according to claim 1, characterized in that: The adjustment plates (7) are provided in two groups, and the two groups of adjustment plates (7) are respectively threadedly connected to the surface of the threaded rod (8).

5. The base structure of a backpack lawn mower according to claim 1, characterized in that: A slide groove (14) is provided in the protective shell (5), and two sides of the adjustment plate (7) are slidably connected to the slide groove (14) via sliding blocks (15).

6. The base structure of a backpack lawn mower according to claim 1, characterized in that: A motor (16) is provided on the top of the protective shell (5); an output shaft of the motor (16) rotates through the protective shell (5) and is fixedly connected to the cutting disc (4); the other end of the operating rod (1) is connected to the motor (16); and the motor (16) is electrically connected to the control box (2).

7. A lawn mower, characterized in that: The lawn mower comprises the base structure of the backpack lawn mower according to any one of claims 1-6.

8. A lawn mower according to claim 7, characterized in that: It also comprises an adjusting rod (17), the adjusting rod (17) being fixedly connected to the operating rod (1), the surface of the adjusting rod (17) being slidably connected to a roller frame (18), and the surface of the roller frame (18) being rotatably connected to a roller (19), the surface of the adjusting rod (17) being provided with a plurality of threaded holes (20), and the surface of the roller frame (18) being provided with bolts (21) being threadedly connected to the threaded holes (20).

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