Automatic grass trimmer

Abstract

The utility model discloses an automatic grass trimmer which comprises a supporting frame and a power mechanism arranged in the middle of the interior of the supporting frame, adjustable crawler belts are arranged outside the left side wall and the right side wall of the supporting frame respectively, a motor is arranged on the rear side of the power mechanism, and the motor can drive the crawler belts to operate. A blade mounting shell is mounted on the front side of the power mechanism, the left end and the right end of the blade mounting shell are mounted on the supporting frame through movable parts, driving shafts are mounted on the left side wall and the right side wall of the blade mounting shell, blades are arranged on the driving shafts in the circumferential direction, and the driving shafts are driven by the power mechanism. And the driving shaft can move on the left side wall and the right side wall of the blade mounting shell. The lawn mower has the advantages that the lawn mower is mature in structure and convenient to use, the grass retaining height can be adjusted, different lawn requirements can be met, it can be guaranteed that the lawn is kept at the optimal trimming height by adjusting the grass retaining height of the lawn mower, attractiveness and health of the lawn are kept, and lawn damage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of agricultural tools, specifically to an automatic grass cutter. Background Technology

[0002] Automatic lawn mowers are increasingly widely used in the market, especially in Europe and America, where their automation and intelligence have made them a popular choice for modern homes and businesses. Intelligent lawn mowers not only improve work efficiency but also reduce labor costs. Automatic lawn mowers also play an important role in environmental protection. Compared to traditional manual mowing, lawn mowers are characterized by low noise and high efficiency, reducing environmental pollution.

[0003] When using a lawn mower for routine lawn maintenance, it's essential to set the appropriate mowing height. The mower height should be set to the height required for the lawn. Different grass species have different requirements, so the setting should be adjusted according to the actual situation. Furthermore, lawns are not always flat; most have uneven surfaces. If the mower height is not adjusted in time, it will damage the blades and affect the lifespan of the mower. Summary of the Invention

[0004] To solve the above technical problems, this utility model provides an automatic grass cutter with adjustable blade height.

[0005] The technical solution is as follows: An automatic lawn mower, the key features of which are: a support frame and a power mechanism disposed in the middle of the support frame; adjustable tracks are provided on the outer side of both the left and right side walls of the support frame; and a motor is provided on the rear side of the power mechanism, which can drive the tracks to run.

[0006] A blade mounting housing is installed on the front side of the power mechanism. The left and right ends of the blade mounting housing are mounted on the support frame via movable components. Drive shafts are installed on the left and right side walls of the blade mounting housing, and blades are arranged circumferentially on the drive shafts. The drive shafts are driven by the power mechanism and can move along the left and right side walls of the blade mounting housing. With this structure, the motor drives the tracks to rotate, enabling movement, while the power mechanism on the support frame drives the drive shafts to rotate, causing the blades on them to rotate as well, achieving the weeding function. Furthermore, the height of the blade mounting housing and the internal drive shaft can be adjusted to achieve overall lifting, or only the height of the internal drive shaft can be raised to avoid blade damage. It can move and weed in complex terrain and adapt to different weed height requirements, saving manpower.

[0007] Preferably, the movable parts are distributed on the outer side walls of the left and right ends of the blade mounting housing. The support frame has first moving slots on the left and right side walls corresponding to the two movable parts. Each movable part can extend out of the first moving slot, and a fixing member is provided at the extended end for connection. With this structure, the blade mounting housing can move up and down within the first moving slots on the support frame. After being adjusted to a suitable position, it can be fixed by external fixing members, realizing the overall movement of the front-end grass-cutting mechanism of the grass cutter and allowing for reasonable height adjustment.

[0008] Preferably, each of the two blade mounting housings has a second movable groove extending through the bottom on both side walls. Both ends of the drive shaft are fixed within the second movable groove, and one end of the drive shaft can extend out of the second movable groove and connect to the power mechanism. With this structure, the height of the drive shaft within the second movable groove can be adjusted, increasing the distance between the blade and the grass. Furthermore, the drive shaft can move along with the blade mounting housing on the support frame, allowing for adjustments to various heights.

[0009] Preferably, the output end of the power mechanism is connected to the first drive wheel of the first transmission mechanism, and a first driven wheel is provided at the end away from the power mechanism. The first drive wheel and the first driven wheel are connected by a belt. With the above structure, the power mechanism can provide power to the first transmission mechanism, and the first drive wheel can drive the first driven wheel to rotate.

[0010] Preferably, a second transmission mechanism is provided on one side of the first transmission mechanism, and the second transmission mechanism is horizontally arranged, wherein the first driven wheel is connected to the second driven wheel of the second transmission mechanism via a belt. With the above structure, the first transmission mechanism can drive the second transmission mechanism to rotate, thus serving as a transition mechanism.

[0011] Preferably, a blade drive mechanism is provided on the outer side of the blade mounting housing. The blade drive mechanism includes a blade drive wheel and a blade driven wheel, which are connected by a belt. One end of the drive shaft is connected to the blade driven wheel. A tension wheel is fixed on the outer wall of the blade mounting housing near the blade drive mechanism, and the tension wheel abuts against the outer wall of the belt between the blade drive wheel and the blade driven wheel. With this structure, the blade drive wheel in the blade drive mechanism can drive the blade driven wheel to rotate via the belt, and can also drive the drive shaft connected to it to rotate. By setting the tension wheel to abut against the outer wall of the belt, the height of the blade driven wheel is controlled, enabling the drive shaft to move within the second moving groove.

[0012] Preferably, a drive shaft is provided between the blade drive mechanism and the second transmission mechanism. One end of the drive shaft extends into the blade drive wheel, and the other end extends into the second driven wheel. A mounting plate is provided on the end near the second driven wheel. The bottom of the mounting plate is connected to the upper end of the blade mounting housing. The side wall of the blade mounting housing near the blade drive mechanism extends upward to the drive shaft and is fixed thereto. With this structure, the rotation of the second transmission mechanism can be transmitted through the drive shaft to the blade drive mechanism, and the mounting plate and the blade mounting housing side plate connected to the drive shaft ensure the stability of the drive shaft.

[0013] Preferably, a clutch limiting member is provided on the side wall of the support frame away from the drive shaft. The upper end of the clutch limiting member has an "L"-shaped limiting groove, and a clutch rod is provided within the clutch limiting member, connected to the power mechanism. With this structure, the clutch rod can control the opening and closing of the power mechanism, thereby controlling the use of the lawnmower. During use, the clutch rod can engage with the limiting groove of the clutch limiting member, preventing sudden stalling.

[0014] Preferably, a motor housing cavity is provided on the support frame, located behind the power mechanism. The motor is located within the motor housing cavity, and two motors are symmetrically arranged, with their output ends passing through the side wall of the support frame and extending into the drive device of the track. With this structure, the motor in the motor housing cavity can provide power for the movement of the track.

[0015] Preferably, a load-bearing bracket is located inside the track, and at least three load-bearing rollers are sequentially arranged within the load-bearing bracket. The drive device is located at one end of the load-bearing bracket, and a driven device is located at the other end. An adjustment groove is provided on the load-bearing bracket corresponding to the driven device, and a fixed adjustment component is correspondingly provided outside the adjustment groove. With this structure, the load-bearing rollers are the supporting components of the track. When the machine is moving, the track needs to move on uneven terrain. The track load-bearing rollers help the track maintain the correct movement trajectory, preventing it from derailing or jamming during operation. Furthermore, they cooperate with the fixed adjustment component and the adjustment groove to adjust the tension or length of the track.

[0016] Compared with the prior art, the advantages of this utility model are: mature structure, convenient to use, and the ability to selectively adjust the height of the blades on the drive shaft from the ground or the overall height of the mowing mechanism at the front end of the mower according to the situation, so as to adapt to the needs of different lawns. Different types of lawns have different suitable grass retention heights. By adjusting the grass retention height of the mower, it can be ensured that the lawn is kept at the optimal mowing height, maintaining the beauty and health of the lawn and reducing lawn damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 A schematic diagram showing the structure of the housing 8 with the power mechanism 3 and part of the blade removed;

[0019] Figure 3 for Figure 2 A schematic diagram showing the structure after removing the right side plate of the blade mounting housing;

[0020] Figure 4 A schematic diagram of the structure for mounting the blade housing 8;

[0021] Figure 5 for Figure 2 Side view;

[0022] Figure 6 for Figure 2 Rear view;

[0023] Figure 7 Schematic diagram of clutch lever 10 parts. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0025] like Figures 1 to 6 As shown, an automatic lawn mower includes a support frame 1 and a power mechanism 3 disposed in the middle of the support frame 1. Adjustable tracks 2 are provided on the outer side of the left and right side walls of the support frame 1. A motor 11a is provided on the rear side of the power mechanism 3, and the motor 11a can drive the tracks 2 to run.

[0026] A blade mounting housing 8 is installed on the front side of the power mechanism 3. The left and right ends of the blade mounting housing 8 are mounted on the support frame 1 through movable parts 8a. A drive shaft 7 is installed on the left and right side walls of the blade mounting housing 8. Blades 7a are arranged circumferentially on the drive shaft 7. The drive shaft 7 is driven by the power mechanism 3 and can move on the left and right side walls of the blade mounting housing 8. The power mechanism 3 can be a diesel engine or other.

[0027] The movable parts 8a are distributed on the outer side walls of the left and right ends of the blade mounting housing 8. The support frame 1 has a first moving groove 1a on each of the two movable parts 8a on the left and right side walls. The movable part 8a can extend out of the first moving groove 1a. A fixing member 1b is provided on the outside of the extended end to connect with it. The first moving groove 1a has an arc-shaped structure and can adjust the overall height of the front end of the lawn mower. After adjustment, it is fixed to it by the fixing member 1b on the outside.

[0028] The blade mounting housing 8 has a second moving groove 8b that extends through the bottom on both the left and right side walls. Both ends of the drive shaft 7 are fixed in the second moving groove 8b, and one end of the drive shaft 7 can extend out of the second moving groove 8b and connect to the power mechanism 3. The height of the drive shaft 7 in the second moving groove 8b can be adjusted, or it can move up and down together with the blade mounting housing 8 to realize the overall movement of the front grass cutting mechanism, adapting to a variety of different needs.

[0029] The output end of the power mechanism 3 is connected to the first drive wheel 4a of the first transmission mechanism 4, and a first driven wheel 4b is provided at the end away from the power mechanism 3. The first drive wheel 4a and the first driven wheel 4b are connected by a belt. A second transmission mechanism 5 is provided on one side of the first transmission mechanism 4. The second transmission mechanism 5 is horizontally arranged, and the first driven wheel 4b is connected to the second driven wheel 5a of the second transmission mechanism 5 by a belt.

[0030] A blade drive mechanism 6 is provided on the outside of the blade mounting housing 8. The blade drive mechanism 6 includes a blade drive wheel 6a and a blade driven wheel 6b, which are connected by a belt. One end of the drive shaft 7 is connected to the blade driven wheel 6b. A tension wheel 6c is fixed on the outer wall of the blade mounting housing 8 near the blade drive mechanism 6. The tension wheel 6c abuts against the outer wall of the belt between the blade drive wheel 6a and the blade driven wheel 6b. The height of the blade driven wheel 6b can be controlled by controlling the contact between the tension wheel 6c and the belt, so that the drive shaft 7 can move within the second moving groove 8b to adapt to different ground conditions or grass retention height requirements.

[0031] A drive shaft 13 is provided between the blade drive mechanism 6 and the second transmission mechanism 5. One end of the drive shaft 13 extends into the blade drive wheel 6a, and the other end extends into the second driven wheel 5a. A mounting plate 13a is provided on the end near the second driven wheel 5a. The bottom of the mounting plate 13a is connected to the upper end of the blade mounting housing 8. The side wall of the blade mounting housing 8 near the blade drive mechanism 6 extends upward to the drive shaft 13 and is fixed thereto.

[0032] When the power mechanism 3 is started, the first drive wheel 4a of the first transmission mechanism 4 drives the first driven wheel 4b to rotate, which in turn drives the second driven wheel 5a of the second transmission mechanism 5 to rotate. The rotation is then transmitted to the blade drive mechanism 6 through the transmission shaft 13, thereby driving the drive wheel 7 connected to it to rotate. The blade 7a on it rotates to start weeding. Housings are provided on the outside of the second transmission mechanism 5 and the blade drive mechanism 6 to protect the internal drive mechanism.

[0033] The blade mounting housing 8 surrounds the drive shaft 7. The front end and bottom of the blade mounting housing 8 are open. The blade mounting housing 8 can prevent grass blades from flying during weeding, thereby protecting the safety of personnel and the surrounding environment. It can also prevent the blade from cutting hard objects and causing blade damage, thus extending the service life of the lawnmower.

[0034] like Figure 7 As shown, a clutch limiting member 9 is provided on the side wall of the support frame 1 away from the drive shaft 7. The upper end of the clutch limiting member 9 is provided with an "L"-shaped limiting groove 9a. A clutch rod 10 is provided in the clutch limiting member 9. The clutch rod 10 is connected to the power mechanism 3. The start of the power mechanism 3 is controlled by the clutch rod 10. When in use, the clutch rod 10 is inserted into the limiting groove 9a to prevent sudden engine shutdown.

[0035] like Figure 5 and Figure 6 As shown, a motor receiving cavity 11 is provided on the support frame 1. The motor receiving cavity 11 is located behind the power mechanism 3. The motor 11a is located in the motor receiving cavity 11. The two motors 11a are arranged symmetrically. Their output ends pass through the side wall of the support frame 1 and extend into the drive device 2a of the track 2, which can drive the track 2 to run.

[0036] Inside the track 2, there is a load-bearing bracket 2b, and at least three load-bearing wheels 2e are arranged sequentially inside the load-bearing bracket 2b. The drive device 2a is located at one end of the load-bearing bracket 2b, and a driven device 2c is located at the other end. The load-bearing bracket 2b is provided with an adjustment groove 2d corresponding to the driven device 2c. A fixed adjustment component is provided outside the adjustment groove 2d. The load-bearing wheels 2e are the supporting components of the track 2. When the machine is moving, the track 2 needs to move on uneven terrain. The load-bearing wheels 2e can help the track 2 maintain the correct movement trajectory and avoid derailment or jamming during the movement. In addition, they cooperate with the fixed adjustment component and the adjustment groove 2d to adjust the tension or length of the track 2.

[0037] An enlarged toolbox 12 is installed on the upper part of the motor housing cavity 11. The toolbox 12 includes a box body 12a and a box cover 12b. The box cover 12 and the box body 12a are connected by a hinge, and various tools for use or maintenance can be stored inside the toolbox 12.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. An automatic lawnmower, characterized in that: Including support frame (1) and setting in the power mechanism (3) in the middle of the support frame (1) inside, the adjustable track (2) is arranged on the left and right two side walls of the support frame (1), the rear side of the power mechanism (3) is provided with motor (11a), the motor (11a) can drive the track (2) to run; The front side of the power mechanism (3) is provided with blade mounting shell (8), the left and right two ends of the blade mounting shell (8) are installed on the support frame (1) through movable component (8a), the driving shaft (7) is installed on the left and right two side walls of the blade mounting shell (8), the driving shaft (7) is arranged in the form of a ring with blade (7a), the driving shaft (7) is driven by power mechanism (3), and the driving shaft (7) can move on the left and right two side walls of the blade mounting shell (8).

2. An automatic duster according to claim 1, characterized in that: The movable component (8a) is arranged on the outer side wall of the left and right two ends of the blade mounting shell (8), the support frame (1) is provided with first moving groove (1a) on the left and right side walls corresponding to the two movable components (8a), the movable component (8a) can extend out of the first moving groove (1a), and a fixing member (1b) connected with the movable component (8a) is arranged outside the extending end.

3. An automatic duster according to claim 2, wherein: The left and right two side walls of the blade mounting shell (8) are provided with second moving groove (8b) penetrating the bottom, the two ends of the driving shaft (7) are fixed in the second moving groove (8b), and one end of the driving shaft (7) can extend out of the second moving groove (8b) and be connected with the power mechanism (3).

4. An automatic duster according to claim 3, wherein: The output end of the power mechanism (3) is connected with the first driving wheel (4a) of the first transmission mechanism (4), and the first driven wheel (4b) is arranged at the end away from the power mechanism (3), and the first driving wheel (4a) and the first driven wheel (4b) are connected through the belt strip.

5. An automatic duster according to claim 4, characterized in that: The second transmission mechanism (5) is arranged on one side of the first transmission mechanism (4), and the second transmission mechanism (5) is horizontally arranged, wherein the first driven wheel (4b) is connected with the second driven wheel (5a) of the second transmission mechanism (5) through the belt strip.

6. An automatic lawnmower according to claim 5, characterized in that: The blade driving mechanism (6) is arranged outside the blade mounting shell (8), the blade driving mechanism (6) comprises blade driving wheel (6a) and blade driven wheel (6b), the blade driving wheel (6a) and the blade driven wheel (6b) are connected through the belt strip, one end of the driving shaft (7) is connected with the blade driven wheel (6b), and the outer side wall of the blade mounting shell (8) on the side close to the blade driving mechanism (6) is fixed with the tensioning wheel (6c), and the outer side wall of the belt strip between the blade driving wheel (6a) and the blade driven wheel (6b) is tightly contacted with the tensioning wheel (6c).

7. An automatic lawnmower according to claim 6, characterized in that A transmission shaft (13) is arranged between the blade driving mechanism (6) and the second transmission mechanism (5), one end of the transmission shaft (13) extends into the blade driving wheel (6a), the other end extends into the second driven wheel (5a), an installation plate (13a) is arranged on the end close to the second driven wheel (5a), the bottom of the installation plate (13a) is connected with the upper end of the blade installation shell (8), the side wall of the blade installation shell (8) close to the blade driving mechanism (6) extends upward to the transmission shaft (13) and is fixed with the transmission shaft (13).

8. The automatic duster according to claim 1, characterized in that: A clutch limiting piece (9) is arranged on the side wall of the support frame (1) away from the driving shaft (7), the upper end of the clutch limiting piece (9) is provided with a limiting groove (9a) in the shape of "L", a clutch rod (10) is arranged in the clutch limiting piece (9), and the clutch rod (10) is connected with the power mechanism (3).

9. The automatic duster according to claim 1, characterized in that: A motor accommodating cavity (11) is arranged on the support frame (1), the motor accommodating cavity (11) is located behind the power mechanism (3), the motor (11a) is located in the motor accommodating cavity (11), and two motor (11a) are symmetrically arranged, the output ends of the two motor (11a) penetrate through the side wall of the support frame (1) and extend into the driving device (2a) of the track (2).

10. An automatic lawnmower according to claim 9, characterized in that: A load bearing support (2b) is arranged inside the track (2), at least three load bearing wheels (2e) are sequentially arranged in the load bearing support (2b), the driving device (2a) is arranged at one end of the load bearing support (2b), a driven device (2c) is arranged at the other end, the load bearing support (2b) is provided with an adjusting groove (2d) corresponding to the driven device (2c), and a fixed adjusting piece is arranged outside the adjusting groove (2d).

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