Liftable mower structure

Abstract

The utility model relates to the technical field of mowing equipment, in particular to a liftable mower structure which comprises a vehicle body lower cover. The lifting mechanism is connected with the vehicle body lower cover, a mowing disc is arranged at the bottom of the lifting mechanism, and the lifting mechanism is used for adjusting the height of the mowing disc; the vehicle body is installed on the vehicle body lower cover and matched with the lifting mechanism, and a limiting assembly used for limiting the lifting operation of the lifting mechanism to keep the lifting state is arranged on the vehicle body. The utility model provides a liftable mower structure, which is provided with a pull rod, a fixed shaft, a lifting shaft, a vehicle body lower cover with an arc-shaped through groove and a lifting frame with an inclined sliding groove, realizes the lifting of a mowing disc by utilizing a lever principle, and realizes the lifting of the mowing disc through a resettable limiting piece and the pull rod with a fixed structure. Compared with the prior art, on the premise that lifting of the mowing disc can be achieved, the mowing disc lifting device is simple in structure, easy to operate and use, good in lifting effect and low in maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing equipment technology, specifically to a height-adjustable lawn mower structure. Background Technology

[0002] In most lawnmowers currently in use, the cutting disc is fixed. When passing over tall grass to be cut, the operating current of the cutting motor increases. Prolonged operation under such conditions reduces battery life, and the cutting motor is prone to burning out due to continuous high current operation. This not only reduces the lawnmower's cutting efficiency but also easily damages the equipment. Adjusting the height of the cutting disc requires loosening the blade fixing screws, adjusting to the appropriate height, and then tightening the screws again, which is cumbersome and, given the sharp blades, poses a significant safety hazard.

[0003] Patent application number CN200820085197.3 discloses a lawnmower, particularly a lawnmower with an automatically lifting and lowering cutting disc. This utility model includes a lawnmower power system equipped with a cutting disc, characterized by further comprising a lifting power system including a lifting motor, a drive gear, a driven gear, a screw, and a screw sleeve. The lifting motor is driven and connected to the drive gear, the driven gear meshes with the drive gear, the screw is located in the shaft hole of the driven gear and threadedly connected to the screw sleeve, and the screw sleeve is fixed to the cutting disc. This utility model has advantages such as improved mowing efficiency, protection of the mowing equipment, and convenient operation. However, this patent has a relatively complex structure and high maintenance costs. Furthermore, the addition of a lifting motor increases energy consumption and raises economic costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a height-adjustable lawnmower structure.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0006] A height-adjustable lawnmower structure includes:

[0007] The lower cover of the vehicle body is used for connection with other structures;

[0008] A lifting mechanism is connected to the lower cover of the vehicle body. A mowing disc is provided at the bottom of the lifting mechanism, and the lifting mechanism is used to adjust the height of the mowing disc.

[0009] The vehicle body is mounted on the lower cover of the vehicle body and cooperates with the lifting mechanism. It is provided with a limiting component for limiting the lifting operation of the lifting mechanism and maintaining the lifting state.

[0010] As a further improvement of this utility model, the lower cover of the vehicle body is provided with connection holes for connecting with other structures.

[0011] As a further improvement of this utility model, the lifting mechanism includes a pull rod rotatably mounted on the vehicle body, a lifting frame vertically slidably assembled inside the lower cover of the vehicle body, a lawnmower disc mounted at the bottom of the lifting frame, the upper part of the pull rod extending out of the vehicle body through the lower cover of the vehicle body, a fixing structure cooperating with the limiting component being provided at the rod portion located above the rotation point on the pull rod, and a horizontally arranged lifting shaft being provided at the bottom of the pull rod, the lifting shaft being slidably connected to the lower cover of the vehicle body and the lifting frame respectively.

[0012] As a further improvement of this utility model, a fixed shaft is provided inside the vehicle body, and the pull rod is rotatably mounted on the fixed shaft. The rod portion located below the rotation point of the pull rod is inclined at a certain angle relative to the rod portion located above the rotation point of the pull rod.

[0013] As a further improvement of this utility model, the lower cover of the vehicle body is provided with an arc-shaped through groove, the lifting frame is provided with an oblique sliding groove, and the lifting shaft is slidably connected to the arc-shaped through groove and the oblique sliding groove in sequence.

[0014] As a further improvement of this utility model, a rolling wheel is provided on one side wall of the lifting frame, and the rolling wheel rolls and engages with the inner side wall of the vehicle body lower cover.

[0015] As a further improvement of this utility model, the fixing structure includes two fixing holes arranged horizontally side by side on the pull rod at the upper side of the rotation point.

[0016] As a further improvement of this utility model, the limiting component includes a limiting member located on the side of the pull rod and slidably mounted on the vehicle body, a limiting member boss disposed on one side wall in the sliding direction of the limiting member, and a spring disposed on the other side wall in the sliding direction of the limiting member, wherein the limiting member boss cooperates with the fixing hole.

[0017] As a further improvement of this utility model, the top of the limiting member is provided with a pushing boss that extends out of the vehicle body.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a height-adjustable lawnmower structure. Through a pull rod, fixed shaft, lifting shaft, a lower cover with an arc-shaped groove, and a lifting frame with an inclined slide groove, the lawnmower disc is raised and lowered using the lever principle. A resettable limiting component and a pull rod with a fixed structure ensure the state is locked after the pull rod is pulled. Compared with existing technologies, this structure is simple, easy to operate and use, has good lifting effect, and low maintenance costs, while still achieving the ability to raise and lower the lawnmower disc. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the lower cover structure of the vehicle body in this utility model;

[0023] Figure 3 This is a schematic diagram of the lifting mechanism structure in this utility model;

[0024] Figure 4 This is an exploded view of the lifting mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the vehicle body structure in this utility model;

[0026] Figure 6 This is a schematic diagram of the exploded structure of the vehicle body in this utility model;

[0027] Figure 7 This is a schematic diagram showing the position of the pushing boss in its initial state.

[0028] Figure 8 This is a schematic diagram showing the position of the pushing boss in the toggle state of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the present invention in its initial state;

[0030] Figure 10 This is a schematic diagram of the structure of this utility model in the first gear lifting state;

[0031] Figure 11 This is a schematic diagram of the structure of this utility model in the two-speed lifting state.

[0032] In the diagram: 1. Lower cover of vehicle body; 2. Vehicle body; 3. Connecting hole; 4. Tie rod; 5. Lifting frame; 6. Fixed shaft; 7. Lifting shaft; 8. Arc-shaped through groove; 9. Angled sliding groove; 10. Rolling wheel; 11. Fixed hole; 12. Limiting component; 13. Limiting component boss; 14. Spring; 15. Pushing boss; 16. Mowing disc. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] like Figures 1 to 6As shown, a height-adjustable lawnmower structure includes a lower cover 1, a lifting mechanism, a body 2, and a mowing disc 16. The lower cover 1 has a connecting hole 3 for connecting to other structures. The lifting mechanism is connected to the lower cover 1, and the mowing disc 16 is connected to the bottom of the lifting mechanism, which is used to adjust the height of the mowing disc 16. The body 2 is mounted on the lower cover 1 and cooperates with the lifting mechanism, and is equipped with a limiting component for limiting the lifting operation of the lifting mechanism and maintaining its lifting state.

[0035] As a further improvement to this embodiment, the lifting mechanism includes a pull rod 4, a lifting frame 5, a fixed shaft 6, a lifting shaft 7, and a rolling wheel 10. The fixed shaft 6 is fixedly installed on the vehicle body 2, and the pull rod 4 is rotatably installed on the fixed shaft 6. The pull rod 4 has an upper rod portion and a lower rod portion, with the rotation point of the fixed shaft 6 as the dividing point. The lower rod portion of the pull rod 4 is inclined at a certain angle relative to the upper rod portion. The upper rod portion of the pull rod 4 extends out of the vehicle body 2 through the lower cover 1 of the vehicle body, and its top has a horizontal protrusion-like structure to facilitate applying force to pull the pull rod 4 to rotate. A fixing structure that cooperates with the limiting component is provided on the rod portion of the pull rod 4 located above the rotation point. In this embodiment, the fixing structure consists of two fixing holes 11 arranged side by side on the upper rod portion of the pull rod 4. The two fixing holes 11 are respectively a first-position fixing hole and a second-position fixing hole according to the working rotation direction of the upper rod portion of the pull rod 4. The lifting frame 5 is vertically slidably mounted inside the lower cover 1 of the vehicle body. Two mowing discs 16 are provided, symmetrically connected to the bottom of the lifting frame 5. Four rolling wheels 10 are provided, correspondingly set on one side wall of the lifting frame 5. The four rolling wheels 10 roll and cooperate with the inner side wall of the lower cover 1 of the vehicle body to reduce the friction when the lifting frame 5 is raised and lowered. The lifting shaft 7 is connected to the bottom of the lower rod of the pull rod 4 and is arranged horizontally. Correspondingly, arc-shaped through grooves 8 are provided on both sides of the lower cover 1 of the vehicle body, and oblique sliding grooves 9 are provided on both sides of the lifting frame 5. The lifting shaft 7 is slidably connected to the arc-shaped through grooves 8 and oblique sliding grooves 9 in sequence.

[0036] As a further improvement to this embodiment, the limiting assembly includes a limiting member 12, a limiting member boss 13, a spring 14, and a pushing boss 15. The limiting member 12 is located on the side of the pull rod 4 and is slidably mounted on the vehicle body 2. The limiting member boss 13 is disposed on one side wall of the limiting member 12 in the sliding direction and is close to the pull rod 4. The limiting member boss 13 can cooperate with two fixing holes 11 on the upper part of the pull rod 4 for fixed limiting. The spring 14 is disposed on the other side wall of the limiting member 12 in the sliding direction. The pushing boss 15 is disposed on the top of the limiting member 12 and extends out of the vehicle body 2. In the above structure, under the force of the spring 14, the limiting member 12 is in the extreme position away from the spring 14. In this state, the limiting member boss 13 is in contact with one side wall of the pull rod 4 in the rotation direction, limiting its rotation direction. When it is necessary for the pull rod 4 to rotate, the pushing boss 15 is moved to push the limiting member 12 to slide and compress the spring 14, so that the limiting member boss 13 can release the rotation limit on the pull rod 4.

[0037] Working principle and usage process of this utility model:

[0038] In use, this structure is connected to other structures (such as children's strollers) through connecting hole 3. At this time, the state of this structure is as follows. Figure 7 and Figure 9 As shown, lever 4 is in the limit position, and push boss 15 is in position one. The lawn mowing disc 16 has two lifting heights: 1 and 2. When adjusting to level 1: [Example...] Figure 8 As shown, the push boss 15 is moved to position two, releasing the rotation limit on the pull rod 4, and the pull rod 4 is pulled downward; the pull rod 4 rotates around the fixed shaft 6, and the bottom of the pull rod 4 moves upward under the guidance of the arc-shaped through groove 8, while pressing the inclined slide groove 9, causing the lifting frame 5 to move vertically downward. The push boss 15 is released, and under the force of the spring 14, the limiting member 12 returns to its original position, and the limiting member boss 13 is inserted into one of the two fixing holes 11. At this time, the state is as follows. Figure 10 As shown.

[0039] When adjusting to position 2: Move the push boss 15 again to position 2, release the rotation limit of the pull rod 4, and continue to pull the pull rod 4 downwards so that the limiting boss 13 is inserted into the second-position fixing hole among the two fixing holes 11. The state at this time is as follows. Figure 11 As shown.

[0040] When the mowing disc 16 needs to be reset, simply move the push boss 15 again to position two, release the rotation limit on the pull rod 4, push the pull rod 4 upward to the initial state, and then release the limit member 12.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A height-adjustable lawnmower structure, characterized in that: include: The lower body cover (1) is used for connection with other structures; A lifting mechanism is connected to the lower cover (1) of the vehicle body. A grass-cutting disc (16) is provided at the bottom of the lifting mechanism. The lifting mechanism is used to adjust the height of the grass-cutting disc (16). The vehicle body (2) is installed on the lower cover (1) of the vehicle body and cooperates with the lifting mechanism. A limiting component is provided on it to limit the lifting operation of the lifting mechanism and maintain the lifting state.

2. The lifting lawnmower structure according to claim 1, characterized in that: The lower cover (1) of the vehicle body is provided with connection holes (3) for connecting with other structures.

3. The lifting lawnmower structure according to claim 1, characterized in that: The lifting mechanism includes a pull rod (4) rotatably mounted on the vehicle body (2) and a lifting frame (5) vertically slidably mounted in the lower cover (1) of the vehicle body. The mowing disc (16) is mounted at the bottom of the lifting frame (5). The upper part of the pull rod (4) extends out of the vehicle body (2) through the lower cover (1). A fixing structure that cooperates with the limiting component is provided at the rod part located above the rotation point on the pull rod (4). A horizontally arranged lifting shaft (7) is provided at the bottom of the pull rod (4). The lifting shaft (7) is slidably connected to the lower cover (1) of the vehicle body and the lifting frame (5).

4. The lifting lawnmower structure according to claim 3, characterized in that: The vehicle body (2) has a fixed shaft (6) inside, and the pull rod (4) is rotatably mounted on the fixed shaft (6). The rod part of the pull rod (4) located below the rotation point is inclined at a certain angle relative to the rod part of the pull rod (4) located above the rotation point.

5. The lifting lawnmower structure according to claim 3, characterized in that: The lower cover (1) of the vehicle body is provided with an arc-shaped through groove (8), the lifting frame (5) is provided with an oblique sliding groove (9), and the lifting shaft (7) is slidably connected to the arc-shaped through groove (8) and the oblique sliding groove (9) in sequence.

6. The lifting lawnmower structure according to claim 3, characterized in that: A rolling wheel (10) is provided on one side wall of the lifting frame (5), and the rolling wheel (10) rolls and engages with the inner side wall of the vehicle body lower cover (1).

7. The lifting lawnmower structure according to claim 3, characterized in that: The fixing structure includes two fixing holes (11) arranged horizontally side by side on the pull rod (4) at the upper side of the rotation point.

8. The lifting lawnmower structure according to claim 7, characterized in that: The limiting assembly includes a limiting member (12) located on the side of the pull rod (4) and slidably mounted on the vehicle body (2), a limiting member boss (13) provided on one side wall in the sliding direction of the limiting member (12), and a spring (14) provided on the other side wall in the sliding direction of the limiting member (12). The limiting member boss (13) cooperates with the fixing hole (11).

9. The lifting lawnmower structure according to claim 8, characterized in that: The top of the limiting member (12) is provided with a push boss (15) extending out of the vehicle body (2).

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