Mowing machine capable of rotating forwards and backwards

Abstract

The utility model discloses a mowing machine capable of rotating positively and negatively, particularly relates to the technical field of mowing machines, and comprises a machine shell, a protective shell is fixedly connected to the top of the machine shell, a handheld rod is fixedly connected to one side of the protective shell, a control button and a handle are arranged on the handheld rod, and a rotating rod is rotatably mounted at the bottom of the machine shell. The bottom end of the rotating rod is fixedly provided with a straw cutter through a nut, and the middle of the rotating rod is fixedly provided with a limiting plate. Firstly, one side of the straw cutter head is protected through the arranged protective cover, openings in the two sides of the protective cover can be blocked through the sweeping plate, straw is prevented from being brought into the protective cover by the straw cutter head, the blocking and protecting effects are achieved, air is blown into the protective cover by starting the air pump, and the straw cutter head is prevented from being blocked by the sweeping plate. According to the straw cutter head, residual chippings in the protective cover can be blown out, the rotating effect of the straw cutter head is prevented from being affected, abrasion of the straw cutter head can be prevented from being aggravated, and the using effect of the straw cutter head is improved.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a lawnmower that rotates in both directions. Background Technology

[0002] Lawn mowers are used to trim grass and weeds. They typically use high-speed rotating blades to cut grass and weeds. Traditional lawn mowers usually only rotate in one direction, which can easily lead to missed cuts when dealing with complex lawn environments and grasses growing in different directions. This requires repeated operations to achieve a good mowing effect, which is not only inefficient but can also damage the lawn due to repeated rolling. Furthermore, when dealing with dense or tough grasses, the cutting resistance of a one-way rotating lawn mower is greater, which can easily lead to accelerated wear of the cutting device and reduce the lifespan of the lawn mower. Therefore, a lawn mower that rotates in both directions has emerged.

[0003] Most existing lawnmowers control the forward and reverse rotation of the cutting disc using a reversible motor and protect one side of the cutting disc with a protective cover. However, during the rotation of the cutting disc, grass stalks tend to move into the gap between the cutting disc and the protective cover under the action of centrifugal force. When the grass stalks enter the gap, they will cause jamming between the cutting disc and the protective cover, affecting the rotation and cutting effect of the cutting disc. Furthermore, the grass stalks entering the gap between the cutting disc and the protective cover will also lead to accelerated wear of the cutting disc and reduce its service life. Therefore, a lawnmower with bidirectional rotation is proposed. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems by providing a lawnmower that rotates in both directions, thereby addressing the issues raised in the background art.

[0005] The technical solution of this utility model is:

[0006] A lawnmower with bidirectional rotation includes a housing. A protective shell is fixedly connected to the top of the housing, and a hand handle is fixedly connected to one side of the protective shell. The hand handle is equipped with a control button and a handle for easy hand use, and the control button facilitates start-up. A rotating rod is rotatably mounted at the bottom of the housing. A grass-cutting disc is fixedly mounted at the bottom end of the rotating rod with a nut. A limiting plate is fixedly mounted in the middle of the rotating rod. The nut facilitates fixing the grass-cutting disc to the bottom end of the rotating rod, and the limiting plate limits the rotation of the rotating rod. The rotation of the rotating rod drives the limiting plate to rotate, thereby allowing the grass-cutting disc to rotate for easy use.

[0007] The top of the rotating rod is slidably mounted with a first gear and a spring. A limit ring is fixedly mounted at the bottom of the inner cavity of the housing. A wear-resistant disc is fixedly mounted at the top of the limit ring. A reversible motor and a battery are fixedly mounted in the inner cavity of the housing. A second gear is fixedly mounted at the output end of the reversible motor. Starting the reversible motor controls the rotation of the second gear, which can drive the first gear to rotate the rotating rod, facilitating driving. By controlling the reversible motor to rotate in both directions, the first gear can drive the rotating rod to achieve bidirectional rotation, facilitating use. The limit ring facilitates the limiting of the limit plate. The wear-resistant disc reduces the rotation of the cutting blade when the first gear and the second gear are misaligned. The spring pushes the first gear to align with the second gear, facilitating reverse rotation.

[0008] A first motor is fixedly installed in the middle of the protective shell. A lifting plate is threaded onto the output end of the first motor. Multiple pressure rods are fixedly installed on the bottom of the lifting plate. An auxiliary support mechanism is provided on one side of the shell, and a protective cleaning mechanism is provided on the other side. Activating the first motor controls the lifting plate to move the pressure rods downward, which facilitates the position control of the first gear. The auxiliary support mechanism can support one end of the shell to prevent damage to the grass cutting disc due to collision. The protective cleaning mechanism provides protection to prevent grass stalks from getting tangled and stuck on the posts.

[0009] Preferably, the grass-cutting blade and the bottom end of the rotating rod are axially slidably connected, and there are two nuts respectively located on both sides of the grass-cutting blade. The nuts are threadedly connected to the rotating rod, which facilitates the installation and fixing of the grass-cutting blade.

[0010] Preferably, the limiting plate is located in the middle of the limiting ring, the spring is located between the limiting plate and the first gear, the first gear is connected to the rotating rod by a spline, the first gear meshes with the second gear, the limiting ring limits the limiting plate, improving the stability of the rotating rod's rotation, and the second gear controls the rotation of the first gear for easy driving.

[0011] Preferably, one end of the pressure rod penetrates the top of the housing and is in contact with the top surface of the first gear. A ball is embedded in the bottom of the pressure rod. The pressure rod pushes the first gear, and the ball improves the stability of the first gear's rotation and avoids friction.

[0012] Preferably, the auxiliary support mechanism includes a support rod fixed to one side of the housing, a threaded rod fixedly installed at one end of the support rod, and a support wheel rotatably installed at the bottom end of the threaded rod. The support rod and the threaded rod support one end of the housing, and the height of the support wheel can be adjusted by rotating the threaded rod for easy control.

[0013] Preferably, the protective cleaning mechanism includes a protective cover fixed to one end of the housing near the hand handle, an air pump fixedly installed on the top of the protective cover, one side of the grass cutting disc located inside the protective cover, a cavity provided on the protective cover, the output end of the air pump communicating with the cavity, and an air jet hole provided at the inner end of the cavity.

[0014] Preferably, the protective cover has cleaning plates at both ends located on the upper and lower sides of the cutting disc, and a mounting plate is fixed to the top of the protective cover with bolts. The cleaning plates are in contact with the corresponding end faces of the cutting disc. The cleaning plates block the grass stalks remaining on the surface of the cutting disc, preventing them from getting stuck in the middle of the protective cover. By starting the air pump, gas is injected into the cavity and sprayed out to blow out the grass stalks that have entered the protective cover, making it easy to clean and use, avoiding tangling, and improving the use effect.

[0015] The beneficial effects of this utility model are:

[0016] 1. First, the protective cover protects one side of the grass cutting disc, and the cleaning plate can block the openings on both sides of the protective cover to prevent the grass cutting disc from bringing grass stalks into the interior of the protective cover, thus playing a blocking and protective role. By starting the air pump to blow air into the protective cover, the residual debris inside the protective cover can be blown out to avoid affecting the rotation effect of the grass cutting disc and to avoid accelerating the wear of the grass cutting disc, thereby improving the performance of the grass cutting disc.

[0017] 2. By setting a reversible motor to control the first gear to drive the rotating rod to rotate, the rotation of the grass cutting disc can be controlled, and the forward and reverse drive of the protective cover can be controlled. The grass cutting disc can be rotated in reverse to prevent grass stalks from getting tangled on the grass cutting disc. When switching, the first motor can be started to control the misalignment of the first gear and the second gear to prevent the grass cutting disc from suddenly turning due to inertia, which would affect the performance and play a protective role. The auxiliary support mechanism also improves the stability of the machine casing movement.

[0018] In summary, through the interaction of the above-mentioned multiple functions, the openings on both sides of the protective cover can be blocked, preventing grass stalks from entering the gap between the protective cover and the cutting disc, thus playing a protective role. At the same time, it can blow out the debris remaining inside the protective cover to avoid aggravating the wear of the cutting disc and improve the performance. Attached Figure Description

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 for Figure 1 A schematic diagram of the vertical cross-section structure.

[0021] Figure 3 for Figure 1A schematic diagram of the vertical cross-section of the middle casing.

[0022] Figure 4 for Figure 2 Exploded view of the grass cutting disc, rotating rod, and lifting plate.

[0023] In the diagram: 1. Housing; 2. Protective shell; 3. Hand handle; 4. Control button; 5. Handle; 6. Rotating rod; 7. Cutting blade; 8. Nut; 9. First gear; 10. Spring; 11. Limiting plate; 12. Reversible motor; 13. Battery; 14. Second gear; 15. Limiting ring; 16. Wear-resistant disc; 17. Protective cover; 18. Cleaning plate; 19. Mounting plate; 20. Air pump; 21. Cavity; 22. First motor; 23. Lifting plate; 24. Pressure rod; 25. Support rod; 26. Threaded rod; 27. Support wheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As attached Figure 1-4 The illustrated bidirectional rotating lawnmower includes a housing 1. A protective shell 2 is fixedly connected to the top of the housing 1. A hand handle 3 is fixedly connected to one side of the protective shell 2. A control button 4 and a handle 5 are provided on the hand handle 3. The hand handle 3 and handle 5 facilitate hand use, and the control button 4 facilitates start-up. A rotating rod 6 is rotatably installed at the bottom of the housing 1. A grass-cutting disc 7 is fixedly installed at the bottom end of the rotating rod 6 by a nut 8. A limiting plate 11 is fixedly installed in the middle of the rotating rod 6. The grass-cutting disc 7 is easily fixed to the bottom end of the rotating rod 6 by the nut 8. The limiting plate 11 limits the rotation of the rotating rod 6. The rotation of the rotating rod 6 drives the limiting plate 11 to rotate, thereby allowing the grass-cutting disc 7 to rotate for easy use.

[0026] The top of the rotating rod 6 is slidably mounted with a first gear 9 and a spring 10. A limit ring 15 is fixedly mounted at the bottom of the inner cavity of the housing 1, and a wear-resistant disc 16 is fixedly mounted at the top of the limit ring 15. A reversible motor 12 and a battery 13 are fixedly mounted in the inner cavity of the housing 1. A second gear 14 is fixedly mounted at the output end of the reversible motor 12. Starting the reversible motor 12 controls the rotation of the second gear 14, which can drive the first gear 9 to rotate the rotating rod 6, making it easy to drive. By controlling the reversible motor 12 to rotate in both directions, the first gear 9 can be controlled to drive the rotating rod 6 to achieve bidirectional rotation, making it easy to use. The limit ring 15 can conveniently limit the limit plate 11. When the first gear 9 and the second gear 14 are misaligned, the rotation of the grass cutting disc 7 is reduced by the cooperation of the first gear 9 and the wear-resistant disc 16. The spring 10 pushes the first gear 9 to make the first gear 9 correspond to the second gear 14, making it easy to rotate in the opposite direction.

[0027] A first motor 22 is fixedly installed in the middle of the protective shell 2. The output end of the first motor 22 is threaded onto a lifting plate 23. Multiple pressure rods 24 are fixedly installed at the bottom of the lifting plate 23. An auxiliary support mechanism is provided on one side of the machine shell 1, and a protective cleaning mechanism is provided on the other side. Starting the first motor 22 controls the lifting plate 23 to drive the pressure rods 24 to move downward, which facilitates the position control of the first gear 9. The auxiliary support mechanism can support one end of the machine shell 1 to prevent damage to the grass cutting disc 7 due to collision. The protective cleaning mechanism can play a protective role to prevent grass stalks from getting tangled and stuck on the column.

[0028] As attached Figure 1-4 As shown, the bottom ends of the grass-cutting blade 7 and the rotating rod 6 are axially slidably connected. There are two nuts 8, which are respectively set on both sides of the grass-cutting blade 7. The nuts 8 are threadedly connected to the rotating rod 6. The limiting plate 11 is located in the middle of the limiting ring 15. The spring 10 is set between the limiting plate 11 and the first gear 9. The first gear 9 is connected to the rotating rod 6 through a spline. The first gear 9 meshes with the second gear 14. One end of the pressure rod 24 passes through the top of the housing 1 and is in contact with the top surface of the first gear 9. The bottom of the pressure rod 24 is fitted with a ball to facilitate the installation and fixation of the grass-cutting blade 7. The limiting ring 15 limits the limiting plate 11, improving the stability of the rotation of the rotating rod 6. The second gear 14 controls the rotation of the first gear 9 for easy driving. The pressure rod 24 pushes the first gear 9, and the ball improves the stability of the rotation of the first gear 9 and avoids friction.

[0029] As attached Figure 1-3As shown, the auxiliary support mechanism includes a support rod 25 fixed to one side of the housing 1. A threaded rod 26 is fixedly installed at one end of the support rod 25, and a support wheel 27 is rotatably installed at the bottom end of the threaded rod 26. The protective cleaning mechanism includes a protective cover 17 fixed to one end of the housing 1 near the hand handle 3. An air pump 20 is fixedly installed on the top of the protective cover 17. One side of the grass-cutting blade 7 is located inside the protective cover 17. A cavity 21 is provided on the protective cover 17. The output end of the air pump 20 is connected to the cavity 21. An air jet hole is provided at the inner end of the cavity 21. Cleaning nozzles are respectively provided at both ends of the protective cover 17 on the upper and lower sides of the grass-cutting blade 7. The sweeping plate 18 and the protective cover 17 are fixed to the mounting plate 19 by bolts at one end. The sweeping plate 18 is in contact with the corresponding end face of the grass cutting disc 7. The support rod 25 and the threaded rod 26 support one end of the machine housing 1. The height of the support wheel 27 can be adjusted by rotating the threaded rod 26 for easy control. The sweeping plate 18 blocks the grass stalks remaining on the surface of the grass cutting disc 7 to prevent them from getting stuck in the middle of the protective cover 17. By starting the air pump 20, gas is injected into the cavity 21 and sprayed out to blow out the debris that has entered the protective cover 17, making it easy to clean and use, avoiding tangling, and improving the use effect.

[0030] The working principle of this utility model is as follows:

[0031] When in use, hold the handle 3 and handle 5 to control the movement of the housing 1, and control the reversible motor 12 and air pump 20 to start via the control button 4. The reversible motor 12 drives the grass cutting disc 7 to rotate via the second gear 14, the first gear 9 and the rotating rod 6 in sequence, which facilitates grass cutting. The cleaning plate 18 blocks and cleans the grass debris remaining on the surface of the grass cutting disc 7. At the same time, the air pump 20 blows air into the protective cover 17 to blow out any debris that accidentally enters, avoids obstruction and improves the use effect.

[0032] When reverse rotation is required, the first motor 22 is started, and the lifting plate 23 moves downward under the action of the output shaft thread of the first motor 22, which drives the pressure rod 24 to push the first gear 9 downward, causing the second gear 14 to be misaligned with the first gear 9, and the first gear 9 to fit into the wear-resistant disc 16, reducing the inertial rotation of the grass-cutting disc 7. Then, the first motor 22 is started in reverse to drive the pressure rod 24 to reset, and the spring 10 pushes the first gear 9 upward, resetting the first gear 9. This controls the reversible motor 12 to rotate in reverse, thereby controlling the grass-cutting disc 7 to rotate in reverse in sequence, improving the cleaning effect and avoiding tangling.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lawnmower that rotates in both directions, comprising a housing (1), characterized in that: A protective shell (2) is fixedly connected to the top of the housing (1), and a hand handle (3) is fixedly connected to one side of the protective shell (2). A control button (4) and a handle (5) are provided on the hand handle (3). A rotating rod (6) is rotatably installed at the bottom of the housing (1). The bottom end of the rotating rod (6) is fixedly installed with a grass-cutting disc (7) by a nut (8). A limiting plate (11) is fixedly installed in the middle of the rotating rod (6). The top of the rotating rod (6) is slidably mounted with a first gear (9) and a spring (10). A limit ring (15) is fixedly mounted at the bottom of the inner cavity of the housing (1). A wear-resistant disc (16) is fixedly mounted at the top of the limit ring (15). A reversible motor (12) and a battery (13) are fixedly mounted in the inner cavity of the housing (1). A second gear (14) is fixedly mounted at the output end of the reversible motor (12). The protective shell (2) is fixedly installed with a first motor (22) in the middle. The output end of the first motor (22) is connected to a lifting plate (23) by a thread. Multiple pressure rods (24) are fixedly installed at the bottom of the lifting plate (23). An auxiliary support mechanism is provided on one side of the housing (1), and a protective cleaning mechanism is provided on the other side.

2. The lawnmower with bidirectional rotation according to claim 1, characterized in that: The grass cutting disc (7) and the rotating rod (6) are axially slidably connected at their bottom ends. There are two nuts (8) and they are respectively set on both sides of the grass cutting disc (7). The nuts (8) are threadedly connected to the rotating rod (6).

3. The lawnmower with bidirectional rotation according to claim 1, characterized in that: The limiting plate (11) is located in the middle of the limiting ring (15), the spring (10) is located between the limiting plate (11) and the first gear (9), the first gear (9) is connected to the rotating rod (6) by a spline, and the first gear (9) meshes with the second gear (14).

4. The lawnmower with bidirectional rotation according to claim 1, characterized in that: One end of the pressure rod (24) penetrates the top of the housing (1) and is in contact with the top surface of the first gear (9). The bottom of the pressure rod (24) is fitted with a ball.

5. The lawnmower with bidirectional rotation according to claim 1, characterized in that: The auxiliary support mechanism includes a support rod (25) fixed to one side of the housing (1), a threaded rod (26) fixedly installed at one end of the support rod (25), and a support wheel (27) rotatably installed at the bottom end of the threaded rod (26).

6. The lawnmower with bidirectional rotation according to claim 1, characterized in that: The protective cleaning mechanism includes a protective cover (17) fixed to one end of the housing (1) near the hand handle (3). An air pump (20) is fixedly installed on the top of the protective cover (17). One side of the grass cutting disc (7) is located inside the protective cover (17). A cavity (21) is provided on the protective cover (17). The output end of the air pump (20) is connected to the cavity (21). An air jet hole is provided at the inner end of the cavity (21).

7. The lawnmower with bidirectional rotation according to claim 6, characterized in that: The protective cover (17) has cleaning plates (18) on both ends of the upper and lower sides of the grass cutting disc (7). The top end of the protective cover (17) is fixed with a mounting plate (19) by bolts. The cleaning plate (18) is in contact with the corresponding end face of the grass cutting disc (7).

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