A garden lawn trimming device

Abstract

The application relates to the technical field of garden machinery, and provides a garden lawn trimming device, which comprises a chassis and a trimming mechanism, the trimming mechanism comprises a driving motor and a trimming blade, the trimming blade is rotationally connected to the chassis, the driving motor is arranged on the chassis and is in transmission connection with the trimming blade, an installation part is arranged on the chassis and is in sliding adjustment, the installation part slides along a horizontal plane for adjustment, an adjusting mechanism for adjusting the position of the installation part is arranged on the chassis, and the trimming mechanism is arranged on the installation part; when the installation part is adjusted to a position close to the circumferential side of the chassis, the circumferential side of the trimming blade extends out of the circumferential side of the chassis. Based on the above, the position of the trimming blade can be conveniently adjusted, the influence of the chassis is reduced, and the trimming effect on the lawns around the object is facilitated.

Description

Technical Field

[0001] This application relates to the field of garden machinery technology, and in particular to a garden lawn trimming device. Background Technology

[0002] Lawns are a common sight, especially in gardens, courtyards, and plazas. Because lawns grow continuously, they require regular mowing to maintain their appearance. Lawn mowing typically involves the use of lawnmowers or lawn trimming equipment.

[0003] Existing Chinese patent CN219146157U discloses a lawn trimmer, including a base frame. Locking casters are fixedly connected to the four corners of the base frame's bottom. A push handle is fixedly connected to the upper side of the base frame. A vertically arranged U-shaped shell is fixedly connected to the upper side of the base frame, and a lifting adjustment mechanism is provided within the U-shaped shell. Both ends of the lifting adjustment mechanism extend to the lower part of the U-shaped shell and are fixedly connected to a mounting shell, which houses a trimming mechanism. A battery pack is fixedly connected to the upper side of the base frame, and a switch is fixedly connected to the upper side of the push handle. The lifting adjustment mechanism, trimming mechanism, and battery pack are electrically connected to the switch. The trimming mechanism includes a drive motor and trimming blades. The drive motor drives the trimming blades to rotate, and the movement of the base frame causes the trimming blades to move synchronously. The height of the trimming mechanism is adjustable through the lifting adjustment mechanism, allowing for trimming lawns of different heights, providing a wide processing range and convenient adjustment.

[0004] Regarding the aforementioned technologies, some lawns have trees planted on them, and some even have artificial hills, stone sculptures, utility poles, and other objects. When trimming the lawn around these objects, because the trimming mechanism is fixed to the center of the machine frame, and there is a gap between the trimming blades and the perimeter of the machine frame, the trimming blades cannot get close enough to the lawn around the objects due to the obstruction of the machine frame. This results in inadequate trimming of the lawn around the objects, affecting the overall performance. Summary of the Invention

[0005] In order to adjust the position of the trimming blades, reduce the impact of the base frame, and facilitate the trimming of the lawn around the object, this application provides a lawn trimming device.

[0006] The garden lawn trimming device provided in this application adopts the following technical solution:

[0007] A lawn trimming device includes a base frame and a trimming mechanism. The trimming mechanism includes a drive motor and a trimming blade. The trimming blade is rotatably connected to the base frame. The drive motor is mounted on the base frame and is drively connected to the trimming blade. A mounting part is slidably adjustable on the base frame. The mounting part slides and adjusts along a horizontal plane. An adjustment mechanism for adjusting the position of the mounting part is provided on the base frame. The trimming mechanism is located on the mounting part. When the mounting part is adjusted to a position close to the periphery of the base frame, the periphery of the trimming blade extends beyond the outer periphery of the base frame.

[0008] By adopting the above technical solution, the drive motor rotates the trimming blades, and the rotating trimming blades trim the lawn during the movement of the base frame. When trimming a large open lawn, the mounting part can be moved to a position close to the center of its sliding path by the adjustment mechanism. At this time, the rotation range of the trimming blades is completely within the perimeter of the base frame. When it is necessary to cut the lawn around an object, the mounting part can be moved to a position close to the end of its own moving path. At this time, the perimeter of the trimming blades extends beyond the perimeter of the base frame and is not affected by the base frame. Therefore, when the base frame is close to the object, the trimming blades extending beyond the base frame will be closer to the lawn around the object to trim the lawn around the object. This achieves the effect of adjusting the position of the trimming blades, reducing the impact of the base frame, and facilitating the trimming of the lawn around the object.

[0009] Preferably, the bottom of the base frame is provided with several rollers, and a push handle is provided on one side of the base frame. The adjustment mechanism is used to drive the mounting part to move back and forth along the opposite sides of the base frame.

[0010] By adopting the above technical solution, the rollers facilitate the movement of the base frame, and the push handle facilitates the movement of the base frame. In addition, as the base frame moves forward, the adjustment mechanism can drive the installation part to move back and forth. Therefore, without pushing the base frame, the trimming blade can trim a larger area of ​​lawn, which is more efficient and less labor-intensive.

[0011] Preferably, the adjustment mechanism includes a lead screw, a control motor, and a switch. The lead screw is arranged horizontally and parallel to the sliding direction of the mounting part. The lead screw is rotatably connected to the base frame and threadedly connected to the mounting part. The control motor is drivenly connected to the lead screw, and the switch is electrically connected to the control motor. The switch is mounted on the push handle.

[0012] By adopting the above technical solution, the switch can control the opening and closing of the control motor. When the control motor drives the lead screw to rotate in both directions, it can drive the mounting part to move back and forth.

[0013] Preferably, an elastic buffer block is provided on the periphery of the base frame. When the elastic buffer block is in its natural state and the mounting part slides to the end of the moving path, the distance from the horizontal end of the elastic buffer block to the periphery of the connected base frame is greater than the length of the trimming blade extending out of the periphery of the base frame.

[0014] By adopting the above technical solution, when it is necessary to trim the lawn around the object, a portion of the trimming blade extends beyond the periphery of the base frame as the mounting part moves. When the base frame approaches the object, the horizontal end of the elastic buffer block away from the base frame will contact the object first, reducing the direct contact between the trimming blade extending beyond the periphery of the base frame and the object, thus preventing damage to the object or the trimming blade.

[0015] Preferably, the distance between the roller and the lower surface of the base frame is adjustable, and the horizontal inclination of the base frame is adjustable.

[0016] By adopting the above technical solution, when trimming lawns with many pits, if the roller enters a pit, the normally horizontal base and trimming blade will tilt simultaneously. This causes the large area of ​​lawn in contact with the blade to be trimmed too short, affecting the smoothness of the trimming. Therefore, by adjusting the height of the roller and the lower surface of the base, the tilt of the base can be controlled, thereby simultaneously adjusting the horizontal tilt of the trimming blade. This allows the lower part of the trimming blade to contact and cut the lawn, thus greatly reducing the overall contact area between the trimming blade and the lawn. Even when the roller encounters a pit, it will not cause an excessively large area of ​​lawn to be trimmed, improving the smoothness of the lawn trimming.

[0017] Preferably, the roller includes a connecting part and a wheel body. The wheel body is rotatably mounted on the lower surface of the connecting part. The connecting part is fixed to the base frame by bolts and nuts. The bolt passes vertically through the connecting part and the base plate and is locked with the nut. The nut is located on the upper surface of the base frame. A plurality of adjusting plates are sleeved on the bolt, and each adjusting plate is stacked along the height direction.

[0018] By adopting the above technical solution, when installing the roller, after the bolt passes through the connecting part and the base frame, it is locked to the upper surface of the base frame with a nut, so that the roller and the base frame can be detachably connected; since the adjusting plate is sleeved on the bolt and located between the base frame and the connecting part, the distance between the roller and the lower surface of the base frame can be adjusted by the number of adjusting plates sleeved on the bolt.

[0019] Preferably, the adjusting plate has a through hole, and the adjusting plate has a notch communicating with the through hole on its periphery, the width of the notch being greater than the outer diameter of the bolt.

[0020] By adopting the above technical solution, when disassembling and assembling the adjusting plate, after loosening the nut, the adjusting plate can be directly removed horizontally along the notch or the bolt can be inserted horizontally. Therefore, it is not necessary to lift the heavy base frame upwards and remove the bolt from the base frame before disassembling and assembling the adjusting plate, making the disassembly and assembly of the adjusting plate more efficient and convenient.

[0021] Preferably, the adjusting piece is provided with an elastic part at the position of the notch, and the elastic part abuts against the outside of the bolt.

[0022] By adopting the above technical solution, the elastic part has a certain elastic deformation capacity. When the adjusting plate is sleeved on the bolt, the elastic part is squeezed and deformed, ensuring that the bolt can pass through the notch and enter the hole. After the bolt enters the hole, the elastic part resets and abuts against the outside of the bolt, which can reduce the adjustment plate falling off the bolt and improve the stability of the adjustment plate on the bolt.

[0023] Preferably, a storage box is provided on the upper surface of the base frame, the upper end of the storage box is provided with an opening, and a cover plate for covering the storage box is rotatably provided on the upper end of the storage box.

[0024] By adopting the above technical solution, when some adjustment pieces are removed from the bolts, they can be placed in the storage box. The cover plate can reduce the possibility of the adjustment pieces falling out of the storage box, making it convenient to store and retrieve the adjustment pieces and reducing the possibility of loss.

[0025] Preferably, a baffle is provided on the lower surface of the base frame, and the baffle is located on one side of the trimming blade.

[0026] By adopting the above technical solution, since the trimming blades may cause some debris to fly when trimming the lawn, the baffle can block the debris and reduce the impact of the flying debris on people.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] (1) By setting up the coordination between the trimming mechanism, the adjustment mechanism and the installation part, when it is necessary to trim the lawn around the house, the installation part can be moved to the end of its own movement path. At this time, part of the trimming blade extends out of the outer periphery of the base frame. The trimming blade part extending out of the outer periphery of the base frame can be used to trim the lawn around the object, so as to make it easy to adjust the position of the trimming blade, reduce the impact caused by the base frame, and make it easy to trim the lawn around the object.

[0029] (2) By setting rollers, push handles, and adjusting mechanisms including lead screws, control motors and switches, the adjusting mechanism can drive the trimming blades and the mounting part to move back and forth. Therefore, without moving the base frame, the trimming blades can trim more lawn areas, improve trimming efficiency, and save more effort.

[0030] (3) By setting the distance between the roller and the lower surface of the base frame to be adjustable, and the horizontal tilt of the base frame to be adjustable, the tilt angle of the blade on the horizontal plane can be adjusted as needed, which can reduce the contact area between the blade and the lawn, thereby reducing the over-trimming of a large area of ​​lawn when the base frame is bumpy, and improving the flatness of the trimming. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the trimming device in this embodiment;

[0032] Figure 2 This is a schematic diagram of the bottom structure of the trimming device in this embodiment;

[0033] Figure 3 This is a schematic diagram of the structure when the end of the trimming blade extends out of the base frame in this embodiment;

[0034] Figure 4 This is an exploded view of the roller mounting structure in this embodiment.

[0035] Reference numerals: 1. Base frame; 2. Hand handle; 3. Trimming mechanism; 31. Drive motor; 32. Trimming blade; 4. Roller; 41. Connecting part; 42. Wheel body; 5. Mounting part; 6. Slide rail; 7. Adjusting mechanism; 71. Lead screw; 72. Control motor; 73. Switch; 8. Elastic buffer block; 9. Bolt; 10. Adjusting plate; 11. Perforation; 12. Notch; 13. Elastic part; 14. Storage box; 15. Cover plate; 16. Baffle. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0037] This application discloses a lawn trimming device. (Refer to...) Figure 1 The trimming device includes a base frame 1, a push handle 2, a trimming mechanism 3, and rollers 4.

[0038] The base frame 1 is a rectangular plate structure with four rollers 4, each installed at a corner of the lower surface of the base frame 1. A push handle 2 is fixed to one side of the base frame 1; in this embodiment, the push handle 2 is located on the wide side of the base frame 1. A trimming mechanism 3 is installed on the base frame 1 and used for trimming the lawn. The push handle 2 facilitates the synchronous movement of the entire base frame 1 and the trimming mechanism 3, allowing the trimming mechanism 3 to move to different positions to trim the lawn.

[0039] Reference Figure 2 and Figure 3 A mounting part 5 is provided on the base frame 1 for sliding adjustment. The mounting part 5 is block-shaped and slides along the horizontal plane. In this embodiment, the sliding direction of the mounting part 5 is parallel to the long side of the base frame 1. A slide rail 6 is fixed on the upper surface of the base frame 1 along the long side direction. The mounting part 5 is slidably connected to the slide rail 6 to achieve smooth sliding of the mounting part 5 on the upper surface of the base frame 1. An adjustment mechanism 7 is provided on the base frame 1 for adjusting the sliding position of the mounting part 5. A trimming mechanism 3 is provided on the mounting part 5 to facilitate synchronous adjustment of the position of the trimming mechanism 3.

[0040] The trimming mechanism 3 includes a drive motor 31 and a trimming blade 32. The trimming blade 32 is rotatably connected to the mounting part 5 and is located below the lower surface of the base frame 1. The drive motor 31 is vertically fixed to the upper surface of the mounting part 5. The drive motor 31 is selected as a servo motor, and its output shaft is connected to the trimming blade 32. When the mounting part 5 is slidably adjusted to a position close to the periphery of the base frame 1, that is, when the mounting part 5 is adjusted to the two endpoints of its sliding path, a portion of the periphery of the trimming blade 32 extends beyond one of the long sides of the base frame 1.

[0041] When trimming a lawn that is open and free of other objects, the mounting part 5 can be adjusted to a position close to the middle of its own movement path. At this time, the base frame 1 completely covers the upper part of the rotation range of the trimming blade 32. The base frame 1 can reduce the impact of debris splashed during trimming on the operator, and the trimming blade 32, which is located directly below the base frame 1, is less likely to come into contact with objects and be damaged.

[0042] When it is necessary to cut the lawn around an object, the mounting part 5 can be moved to the end position close to its own movement path. At this time, the end of the trimming blade 32 extends out of the long side of the base frame 1. Therefore, when the base frame 1 is close to the object, the trimming blade 32 extending out of the base frame 1 will be closer to the lawn around the object and will not be affected by the base frame 1, so as to better trim the lawn around the object.

[0043] The adjustment mechanism 7 can drive the mounting part 5 to move back and forth along the opposite sides of the base frame 1. That is, while pushing the base frame 1, the trimming blade 32 moves back and forth. Therefore, without pushing the base frame 1, the trimming blade 32 can trim a larger area of ​​lawn without pushing the base frame 1 back and forth, which is more efficient and less labor-intensive.

[0044] Specifically, the adjustment mechanism 7 includes a lead screw 71, a control motor 72, and a switch 73. The lead screw 71 is arranged horizontally and parallel to the sliding direction of the mounting part 5. Both ends of the lead screw 71 are rotatably connected to the upper surface of the base frame 1. The lead screw 71 passes through the mounting part 5 and is threadedly connected to the mounting part 5. The control motor 72 is mounted on the upper surface of the base frame 1 and is drivenly connected to one end of the lead screw 71. The control motor 72 is selected as a servo motor and is connected to the lead screw 71 through a reducer. The switch 73 is installed at a higher position on the push handle 2. The switch 73 is electrically connected to the control motor 72 to facilitate the control of the adjustment mechanism 7.

[0045] When the end of the trimming blade 32, away from its own rotation axis, extends beyond the outside of the base frame 1 as the mounting part 5 moves, the control motor 72 is turned off, and the mounting part 5 stops moving, thus achieving rapid adjustment of the sliding position of the mounting part 5. When the control motor 72 reciprocates, it drives the mounting part 5 to move reciprocally.

[0046] In some embodiments, an elastic buffer block 8 is fixed around the base frame 1. The elastic buffer block 8 is selected as a spring or a rubber column and has a certain elastic deformation capability. In this embodiment, the elastic buffer block 8 is columnar and horizontally fixed to the long side of the base frame 1. When the elastic buffer block 8 is in its natural state and the mounting part 5 slides to the end of the moving path, the distance from the horizontal end of the elastic buffer block 8 to the connected base frame 1 is slightly greater than the length of the trimming blade 32 extending out of the base frame 1. Therefore, when the trimming blade 32 approaches the lawn around the object, the end of the elastic buffer block 8 away from the base frame 1 will contact the object first, reducing the risk of damage to the object and the trimming blade 32 caused by the object accidentally hitting a hard object directly.

[0047] In some embodiments, since there are pits and uneven areas on some lawns, and the rotating cutting plane of the trimming blade 32 is mostly horizontal, if the roller 4 passes through a pit and uneven area, the horizontal base 1 and the blade will tilt simultaneously. Since the contact area between the trimming blade 32 and the lawn is large, the large area of ​​lawn in contact with the blade will be trimmed too short, affecting the flatness of the trimming.

[0048] Therefore, in this embodiment, the distance between the roller 4 and the lower surface of the base frame 1 can be adjusted. At this time, the horizontal tilt of the base frame 1 and the tilt of the rotating plane of the trimming blade 32 can also be adjusted, thereby controlling the horizontal tilt of the trimming blade 32. By having the lower part of the trimming blade 32 contact and cut the lawn, the contact area between the trimming blade 32 and the lawn can be reduced. Even if the roller 4 encounters a pit, it will not cause an excessively large area of ​​lawn to be trimmed, thus improving the flatness of the lawn trimming.

[0049] Specifically, refer to Figure 3 and Figure 4The roller 4 includes a connecting part 41 and a wheel body 42. The wheel body 42 is rotatably mounted on the lower surface of the connecting part 41. Each connecting part 41 is fixed to the base frame 1 by bolts 9 and nuts. The bolts 9 pass vertically from bottom to top through the connecting part 41 and the base plate and are locked with the nuts. The nuts are pressed against the upper surface of the base frame 1. Several adjusting pieces 10 are fitted on the bolts 9, and the adjusting pieces 10 are stacked along the height direction. The distance between the roller 4 and the lower surface of the base frame 1 can be adjusted by the number of adjusting pieces fitted on the bolts 9.

[0050] The adjusting plate 10 is circular in shape and has a through hole 11. The diameter of the through hole 11 is slightly larger than the outer diameter of the bolt 9, through which the bolt 9 passes. A notch 12 communicating with the through hole 11 is formed on the periphery of the adjusting plate 10. The width of the notch 12 is larger than the outer diameter of the bolt 9, and the width of the notch 12 is the same as the diameter of the through hole 11. When disassembling or assembling the adjusting plate 10, after loosening the nut, the adjusting plate 10 can be directly removed horizontally along the notch 12 or the bolt 9 can be inserted horizontally. There is no need to lift the heavy base frame 1 to remove the bolt 9 from the base frame 1 before disassembling or assembling the adjusting plate 10, making the disassembly and assembly of the adjusting plate 10 more efficient and convenient.

[0051] An elastic part 13 is fixed to the adjusting plate 10 at the position of the notch 12, and the elastic part 13 is located near the through hole 11. The outer side of the elastic part 13 is arc-shaped, and the elastic part 13 is made of rubber material, which has a certain elastic deformation capacity. The elastic part 13 abuts against the outer side of the bolt 9. The elastic part 13 can ensure that the bolt 9 enters the through hole 11 from the notch 12 while improving the stability of the adjusting plate 10 on the bolt 9.

[0052] In some embodiments, a storage box 14 is provided on the upper surface of the base frame 1. The storage box 14 has an opening at its upper end, and a cover plate 15 is rotatably provided on the upper end of the storage box 14 to cover it. When some of the adjustment pieces 10 are removed from the bolts 9, the adjustment pieces 10 can be placed into the storage box 14. The cover plate 15 can reduce the possibility of the adjustment pieces 10 falling out of the storage box 14, making it convenient to store and retrieve the removed adjustment pieces 10 and reducing the possibility of loss.

[0053] A baffle 16 is fixed on the lower surface of the base frame 1. The baffle 16 is located on one side of the trimming blade 32 and is positioned near the lower end of the push handle 2. Since the operator usually stands on the side of the base frame 1 where the push handle 2 is located, and debris may fly out during the trimming process of the trimming mechanism 3, the baffle 16 can block the debris and reduce the impact of the debris on the operator.

[0054] The implementation principle of the lawn trimming device in this application embodiment is as follows: When it is necessary to trim the lawn around an object, the switch 73 can be used to control the start and stop of the motor 72. When the mounting part 5 moves to the end of its own movement path and the trimming blade 32 extends out of the outer periphery of the base frame 1 away from the drive motor 31, the base frame 1 is then brought closer to the periphery of the object. Since the influence of the base frame 1 is eliminated, the trimming blade 32 extending out of the outer periphery of the base frame 1 can be used to trim the lawn around the object. This achieves the effect of easily adjusting the position of the trimming blade 32, reducing the influence of the base frame 1, and facilitating the trimming of the lawn around the object.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lawn trimming device, comprising a base frame (1) and a trimming mechanism (3), wherein the trimming mechanism (3) includes a drive motor (31) and a trimming blade (32), the trimming blade (32) being rotatably connected to the base frame (1), and the drive motor (31) being disposed on the base frame (1) and drivingly connected to the trimming blade (32), characterized in that, The base frame (1) is provided with a sliding adjustment mounting part (5), which slides along the horizontal plane. The base frame (1) is provided with an adjustment mechanism (7) for adjusting the position of the mounting part (5), and the trimming mechanism (3) is provided on the mounting part (5). When the mounting part (5) is adjusted to a position close to the periphery of the base frame (1), the trimming blade (32) extends out of the outer periphery of the base frame (1); The bottom of the base frame (1) is provided with several rollers (4), and a push handle (2) is provided on one side of the base frame (1). The adjustment mechanism (7) is used to drive the mounting part (5) to move back and forth along the opposite sides of the base frame (1). The adjustment mechanism (7) includes a lead screw (71), a control motor (72), and a switch (73). The lead screw (71) is arranged horizontally and parallel to the sliding direction of the mounting part (5). The lead screw (71) is rotatably connected to the base frame (1). The lead screw (71) is threadedly connected to the mounting part (5). The control motor (72) is drivenly connected to the lead screw (71). The switch (73) is electrically connected to the control motor (72). The switch (73) is mounted on the push handle (2). The base frame (1) is provided with an elastic buffer block (8) around its periphery. When the elastic buffer block (8) is in its natural state and the mounting part (5) slides to the end of the moving path, the distance from the horizontal end of the elastic buffer block (8) to the periphery of the connected base frame (1) is greater than the length of the trimming blade (32) extending out of the periphery of the base frame (1).

2. The lawn trimming device according to claim 1, characterized in that, The distance between the roller (4) and the lower surface of the base frame (1) is adjustable, and the horizontal inclination of the base frame (1) is adjustable.

3. A lawn trimming device according to claim 2, characterized in that, The roller (4) includes a connecting part (41) and a wheel body (42). The wheel body (42) is rotatably mounted on the lower surface of the connecting part (41). The connecting part (41) is fixed to the base frame (1) by bolts (9) and nuts. The bolts (9) pass vertically through the connecting part (41) and the base frame (1) and are locked with the nuts. The nuts are located on the upper surface of the base frame (1). Several adjusting pieces (10) are sleeved on the bolts (9). Each adjusting piece (10) is stacked along the height direction.

4. A lawn trimming device according to claim 3, characterized in that, The adjusting plate (10) is provided with a through hole (11), and the adjusting plate (10) is provided with a notch (12) communicating with the through hole (11) on its periphery. The width of the notch (12) is greater than the outer diameter of the bolt (9).

5. A lawn trimming device according to claim 4, characterized in that, The adjusting piece (10) is provided with an elastic part (13) at the position of the notch (12), and the elastic part (13) abuts against the outside of the bolt (9).

6. A lawn trimming device according to claim 3, characterized in that, The upper surface of the base frame (1) is provided with a storage box (14), the upper end of the storage box (14) is provided with an opening, and the upper end of the storage box (14) is rotatably provided with a cover plate (15) for covering the storage box (14).

7. A lawn trimming device according to claim 1, characterized in that, A baffle (16) is provided on the lower surface of the base frame (1), and the baffle (16) is located on one side of the trimming blade (32).

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