CN212677775U - Grass mowing device - Google Patents

Abstract

The utility model discloses a grass mowing device, include: the rotary frame (10), at least two cover bodies (13) are arranged on the rotary frame (10), and the rotary frame (10) is rotatably connected to the carrying mechanism; at least two lawnmowers (30), each lawnmower (30) coupled within a respective enclosure (13); when the grass mowing device (100) meets an obstacle in the pruning process, the cover body on the rotating frame (10) is contacted with the obstacle, so that the rotating frame (10) rotates relative to the carrying mechanism, and the obstacle is avoided. The grass mowing device can effectively avoid obstacles, is more flexible in pruning, avoids dead angles in pruning, and is large in pruning area, high in working efficiency, simple in structure, convenient to control, time-saving and labor-saving.

Description

Grass mowing device

Technical Field

The utility model relates to an agriculture and forestry mechanical equipment field especially relates to a device of beating grass.

Background

The plant trimming device is a tool for trimming gardens, in order to meet the urban greening requirements, a large number of lawns are planted in urban greening belts, and the lawns need to be trimmed after growing for a certain time so as to improve the ornamental value and the aesthetic value of the lawns; in the prior art, the grass mowing device has a small trimming surface and low working efficiency; on the other hand, because a large number of plants are often planted on the lawn at intervals, when the grass mowing device is used for mowing and trimming, in order to avoid damage to the plants, trimming is stopped, so that trimming dead corners are generated; and the dead angle part is trimmed by manually operating the hedge trimmer, so that the working efficiency is low, and time and labor are wasted.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that above-mentioned prior art exists, the utility model discloses a device of beating grass is proposed, and the device of should beating grass can effectively avoid the barrier, prunes more in a flexible way, avoids producing and prunes the dead angle, prunes the area moreover big, and work efficiency is high, simple structure, and control is convenient, labour saving and time saving.

According to the utility model discloses a grass mowing device, include:

the rotary frame is provided with at least two cover bodies and can be rotatably connected to the carrying mechanism;

at least two lawnmowers, each of the lawnmowers coupled within a respective one of the shroud bodies;

when the grass mowing device meets an obstacle in the pruning process, the cover body on the rotating frame is contacted with the obstacle, so that the rotating frame rotates relative to the carrying mechanism, and the obstacle is avoided.

Specifically, the grass trimmers in each cover body rotate around the grass trimmers, and the carrying mechanism drives the grass trimmers to move forward and trim; when the rotating frame collides with the barrier, the barrier gives an acting force to the rotating frame, so that the rotating frame rotates relative to the carrying mechanism to avoid the barrier; the grass mowing device can effectively avoid obstacles, is more flexible in pruning, avoids dead angles in pruning, and is large in pruning area, high in working efficiency, simple in structure, convenient to control, time-saving and labor-saving.

In addition, according to the utility model discloses a device of beating grass can also have following technical characterstic:

in an embodiment of the present invention, the grass mowing device further comprises:

the first driving device is connected with the rotating frame so as to drive the rotating frame to rotate around the central axis of the rotating frame;

when the grass trimmer is required to trim, the first driving device drives the rotating frame, and the grass trimmer executes trimming action;

when the grass mowing device touches an obstacle, the first driving device continues to drive the rotating frame (10) to rotate so as to avoid the obstacle.

In an embodiment of the present invention, the grass mowing device further comprises:

the sensor is used for sensing whether the rotary frame touches an obstacle or not;

a controller coupled to the first drive, the lawnmower, and the sensor;

when the grass trimmer is required to trim, the controller controls the grass trimmer to execute trimming action and controls the first driving device not to act;

when the grass mowing device touches the obstacle, the sensor sends out a touch signal, and the controller receives the touch signal and controls the first driving device to drive the rotary frame to rotate for a specified angle around the rotating direction so as to avoid the obstacle.

In an embodiment of the present invention, the rotating frame includes:

a main body portion fixedly connected to an output shaft of the first drive device;

at least two connecting parts, wherein the connecting parts extend along the direction vertical to the extending direction of the main body part, and the connecting parts are arranged at intervals along the circumferential direction of the main body part;

the grass trimmer is connected to one end, far away from the main body part, of the connecting part in a one-to-one correspondence mode.

In one embodiment of the present invention, the sensor includes at least two pressure contact sensors, and a one-to-one correspondence is coupled to the corresponding cover.

In an embodiment of the present invention, the cover body is provided with:

one end of the elastic blocking piece is connected to the lateral edge of the cover body, the other end of the elastic blocking piece deviates in the direction away from the cover body, and one end, close to the deviating end, of the elastic blocking piece is suitable for being arranged opposite to the pressure contact sensor;

when the cover body touches an obstacle, the elastic blocking piece deforms, so that one end, deviating from the cover body, of the elastic blocking piece moves towards the cover body and abuts against the pressure contact sensor;

wherein the resilient flap has a force tending to return to an original position when the cover is separated from the obstacle.

In an embodiment of the present invention, the elastic blocking piece is an arc-shaped structure, and is disposed along the outer edge of the cover body, and the radian opening of the elastic blocking piece faces the cover body.

In an embodiment of the present invention, the present invention further includes:

one end of the elastic piece is connected with one end of the elastic blocking piece deviating from the cover body, and the other end of the elastic piece is connected with the cover body, so that the end of the elastic blocking piece deviating from the cover body has a tendency to deviate from the cover body.

In an embodiment of the present invention, the first driving device includes: a first drive motor, a first gear and a second gear,

the first gear is coupled to an output shaft of the first drive motor;

the second gear is coupled on the rotary frame and meshed with the first gear;

the number of teeth of the first gear is larger than that of the second gear.

In an embodiment of the present invention, the first driving device further includes:

the sleeve pipe, the sleeve pipe passes through the bearing and rotationally overlaps and establish the outside of revolving the frame, just first driving motor connects on the sleeve pipe.

The following description of the preferred embodiments of the present invention will be made in detail with reference to the accompanying drawings, so that the features and advantages of the invention can be easily understood.

Drawings

FIG. 1 is a schematic view of a grass mowing device according to an embodiment of the present invention;

FIG. 2 is a schematic view of another direction of the grass mowing device according to the embodiment of the invention;

FIG. 3 is a schematic view of a grass mowing device (with the cover and housing hidden) according to an embodiment of the present invention in one direction;

FIG. 4 is a schematic view of another embodiment of the grass mowing device (with the cover and the housing hidden) according to the present invention;

FIG. 5 is a schematic structural view of a grass mowing device according to an embodiment of the present invention in a non-contact state with an obstacle;

fig. 6 is a schematic view of a contact state between the grass mowing device and the obstacle according to the embodiment of the invention.

Reference numerals:

a grass mowing device 100;

a rotating frame 10;

a main body portion 11;

a connecting portion 12;

a cover body 13;

a mounting groove 131;

an elastic flap 132;

the elastic member 133;

a first drive device 20;

a first drive motor 21;

a first gear 22;

a second gear 23;

a sleeve 24;

a support plate 241;

a bearing 25;

a grass trimmer 30;

a second driving device 31;

a trimming blade 32;

a connecting disc 33;

a connecting rod 40;

the direction of rotation F.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The following description is provided with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the invention as defined by the claims. It includes various specific details to assist in this understanding, but these details should be construed as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that changes and modifications may be made to the various embodiments described herein without departing from the scope of the present invention, which is defined by the following claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

It will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims.

Throughout the description and claims of this specification, the words "comprise" and variations of the words, for example "comprising" and "comprises", mean "including but not limited to", and are not intended to (and do not) exclude other components, integers or steps.

It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The expression "comprising" and/or "may comprise" as used in the present invention is intended to indicate the presence of corresponding functions, operations or elements, and is not intended to limit the presence of one or more functions, operations and/or elements. Furthermore, in the present application, the terms "comprises" and/or "comprising" are intended to indicate the presence of the features, quantities, operations, elements, and components, or combinations thereof, disclosed in the specification. Thus, the terms "comprising" and/or "having" should be understood as presenting additional possibilities for one or more other features, quantities, operations, elements, and components, or combinations thereof.

Although expressions such as "1 st", "2 nd", "first" and "second" may be used to describe the respective elements of the present invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of the corresponding elements. The above expressions are used to distinguish one element from another.

References herein to "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships, which may change accordingly when the absolute position of the object being described changes.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular references include plural references unless there is a significant difference in context, scheme or the like between them.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

According to the utility model discloses a device 100 beats grass, as shown in fig. 1, fig. 2, include:

the rotary frame 10 is provided with at least two cover bodies 13, and the rotary frame 10 is rotatably connected to the carrying mechanism; the cover 13 is used for covering other components connected with the cover to protect the components, for example, in the utility model, the cover 13 is used for covering the grass trimmer 30 as described below, and the direct collision between the cover and the obstacle is avoided in the working process of the grass trimmer 30;

at least two lawnmowers 30, each lawnmower 30 coupled within a respective housing 13; that is, the grass trimmer 30 is used for trimming weeds on the ground, and when the first driving device 20 drives the rotating frame 10 to rotate, the trimming set coupled to the cover 13 also rotates while revolving, and the trimming area of the grass trimmer 100 can be increased by providing at least two grass trimmers 30, thereby improving the trimming efficiency.

When the grass mowing device 100 encounters an obstacle during the trimming process, the cover body on the rotating frame 10 touches the obstacle, so that the rotating frame 10 rotates relative to the carrying mechanism, and the obstacle is avoided.

Specifically, the grass trimmer 30 located in each cover 13 rotates around itself, and the carrying mechanism drives the grass trimmer 100 to move forward and trim; when the rotating frame 10 collides with an obstacle, the obstacle gives an acting force to the rotating frame 10, so that the rotating frame 10 rotates relative to the carrying mechanism to avoid the obstacle; the grass mowing device 100 can effectively avoid obstacles, is more flexible in pruning, avoids dead angles in pruning, and is large in pruning area, high in working efficiency, simple in structure, convenient to control, time-saving and labor-saving.

In an embodiment of the present invention, the grass mowing device 100 further comprises:

a first driving device 20, wherein the first driving device 20 is coupled to the swing frame 10 to drive the swing frame 10 to rotate around the central axis thereof; for example, the first driving device 20 is a driving motor, and an output shaft thereof is fixedly connected to the rotating frame 10 through a fastener, and drives the rotating frame 10 to rotate synchronously therewith in an electrified working state.

When the grass trimmer 100 needs to trim, the first driving device 20 drives the rotating frame 10, and the grass trimmer 30 executes trimming action;

when the grass mowing device 100 touches an obstacle, the first driving device 20 continues to drive the rotating frame 10 to rotate so as to avoid the obstacle.

That is, under the driving force of the first driving device 20, the swing frame 10 can rapidly avoid the obstacle, and the avoiding action of the grass mowing device 100 is completed; of course, the first driving device 20 may not be operated, and the swing frame 10 may not rotate and only drive the first driving device 20 to rotate when colliding with an obstacle, that is, the first driving device 20 may idle.

In an example of the present invention, the grass mowing device further comprises:

a sensor for sensing whether the swing frame 10 touches an obstacle; specifically, the rotating frame 10 rotates under the driving force of the first driving device 20, and when the weeds are trimmed, the cover 13 contacts with the obstacle, so that the sensor senses the obstacle, generates a touch signal, and transmits the touch signal to the controller.

A controller coupled to the first drive 20, the lawnmower 30, and the sensor;

when the grass trimmer 100 needs to trim, the controller controls the grass trimmer (30) to perform trimming action, and controls the first driving device 20 not to act, namely the rotating frame 10 is in a static state.

When the mowing device 100 touches an obstacle, the sensor sends a touch signal, and the controller receives the touch signal and controls the first driving device 20 to drive the rotating frame 10 to rotate by a specified angle around the rotating direction F so as to avoid the obstacle.

The designated angle is determined according to the specific situation, for example, in the embodiment of the present invention, the swing frame 10 has three covers 13, each cover 13 is spaced by 120 degrees, and accordingly, the designated angle is 120 degrees.

It should be noted that the rotating direction F may be counterclockwise, and when the grass trimmer 100 is carried by the carrying mechanism and trimmed to the left side, the rotating direction is counterclockwise; when the mounting mechanism carries the mowing device 100 to trim to the right, the rotation direction is clockwise at this time, for example, as shown in fig. 5 and 6.

In one of the operation modes, the lawn mower 30 located in each cover 13 rotates around itself, the first driving device 20 does not operate, and accordingly the rotating frame 10 does not rotate, and when the sensor located on the cover 13 contacts with an obstacle, the controller controls the first driving device 20 to rotate around the obstacle in the direction of the force applied to the rotating frame 10 by the obstacle, for example, in the embodiment, the rotating frame rotates 120 degrees to effectively avoid the obstacle.

In the other working mode, when the electric working is carried out, the grass trimmer 30 positioned in each cover body 13 rotates around itself, and the rotary frame 10 is driven by the first driving device 20 to rotate, so that the grass trimmer 30 revolves around the central axis of the first driving device 20; when the sensor on the cover 13 contacts with the obstacle, the controller controls the first driving device 20 to continue rotating in the same direction to avoid the obstacle.

In an embodiment of the present invention, as shown in fig. 1 to 6, the rotating frame 10 includes:

a main body portion 11, the main body portion 11 being fixedly connected to an output shaft of the first driving device 20;

at least two connecting portions 12, the connecting portions 12 extending in a direction perpendicular to an extending direction of the main body portion 11, the connecting portions 12 being provided at intervals along a circumferential direction of the main body portion 11;

wherein, the grass trimmer 30 is coupled to one end of the connecting part 12 far away from the main body part 11 in a one-to-one correspondence manner;

specifically, the main body portion 11 and the connecting portion 12 may be both of a rod structure, for example, the main body portion 11 and the connecting portion 12 are both steel pipes and are connected to each other by welding or fastening; the grass trimmer 30 is connected to the connecting part 12 at one end far away from the main body part 11, so that the trimming area of the grass trimmer 30 can be increased.

Preferably, the connecting portions 12 are three and are connected at equal intervals in the circumferential direction of the main body portion 11, that is, the included angle between two adjacent connecting portions 12 is 120 degrees.

In one embodiment of the present invention, the sensors include at least two pressure contact sensors, and are coupled to the corresponding cover 13 in a one-to-one correspondence, so that when the weeds are trimmed, the pressure contact sensors on the cover 13 contact with the obstacle, and the sensors sense and detect the obstacle, generate a touch signal and transmit the touch signal to the controller;

specifically, when the pressure contact sensor on the cover 13 contacts an obstacle, the pressure contact sensor sends a touch signal, and the controller receives the touch signal and controls the first driving device 20 to rotate around the rotating direction F to avoid the obstacle; otherwise, the first driving device 20 is controlled by the controller not to rotate.

In an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 5 and fig. 6, the cover 13 is configured with:

an elastic flap 132, one end of the elastic flap 132 is coupled to the side edge of the cover 13, the other end of the elastic flap 132 is deviated in the direction away from the cover 13, and the end of the elastic flap 132 close to the deviated end is suitable for being arranged opposite to the pressure contact sensor;

when the cover 13 touches an obstacle, the elastic baffle 132 deforms, so that the elastic baffle 132 deviates from one end of the cover 13 and moves towards the cover 13 and abuts against the pressure contact sensor;

wherein, when the cover 13 is separated from the obstacle, the elastic blocking piece 132 has a tendency to restore the original position;

specifically, a mounting groove 131 is provided on a side edge of the cover body 13, the pressure contact sensor is mounted in the mounting groove 131, a contact of the pressure contact sensor extends out of the mounting groove 131, and the elastic blocking piece 132 is provided outside the mounting groove 131 and is disposed opposite to the pressure contact sensor without contacting the pressure contact sensor;

that is to say, the elastic barrier 132 can increase the contact area of the pressure contact sensor, so that the sensitivity of the pressure contact sensor can be ensured, because the contact of the pressure contact sensor is a contact point after all, and when the pressure contact sensor is in contact with an obstacle, the pressure contact sensor may not sense the obstacle in time, so that the elastic barrier 132 increases the contact area between the pressure contact sensor and the obstacle, so that the pressure contact sensor is more sensitive;

moreover, the elastic baffle 132 can effectively protect the pressure contact sensor, so as to prevent the pressure contact sensor from directly contacting with an obstacle.

In an embodiment of the present invention, the elastic blocking piece 132 is disposed on a side close to the collision surface of the rotating frame 10, wherein the collision surface is a side of the cover 13 colliding with the obstacle, so that when the cover 13 contacts with the obstacle, the elastic blocking piece 132 first contacts with the obstacle, thereby ensuring the sensitivity of the pressure contact sensor.

It is understood that the collision surface has different positions according to the rotation direction of the swing frame 10, and in this embodiment, as shown in fig. 5 and 6, the rotation of the swing frame 10 is clockwise, and the position of the elastic stop piece 132 is the position of the collision surface, but if the rotation is counterclockwise, the elastic stop piece and the pressure contact sensor may also be arranged on the other side opposite to the collision surface.

In an embodiment of the present invention, the elastic stopping piece 132 is an arc-shaped structure and is disposed along the outer edge of the cover 13, and the arc opening of the elastic stopping piece 132 faces the cover 13;

that is, the flexible flap 132 is disposed to fit against the outer edge of the cover 13, making the coupling of the flexible flap 132 to the cover 13 more compact.

In an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 5 and fig. 6, the present invention further includes:

an elastic member 133, one end of the elastic member 133 is coupled to one end of the elastic flap 132 deviating from the cover 13, and the other end thereof is coupled to the cover 13, so that one end of the elastic flap 132 deviating from the cover 13 has a tendency to deviate from the cover 13;

when the elastic blocking piece 132 contacts with an obstacle, the elastic blocking piece 132 deforms, and the elastic piece 133 is deformed under pressure, so that the contact force between the elastic blocking piece 132 and the pressure contact sensor can be reduced, the effect of buffering impact force is achieved, and the effect of protecting the pressure contact sensor is indirectly achieved;

when the elastic flap 132 is separated from the obstacle, the elastic flap 132 may be restored to the original position by its own elastic force or an elastic force given by the elastic member 133.

In an embodiment of the present invention, the elastic member 133 is a compression spring, but the present invention is not limited thereto, and the elastic member 133 may also be a spring plate, etc.

In an embodiment of the present invention, as shown in fig. 3 and 4, the first driving device 20 includes: a first driving motor 21, a first gear 22 and a second gear 23,

the first gear 22 is coupled to an output shaft of the first drive motor 21;

the second gear 23 is coupled to the swing frame 10, and the second gear 23 is meshed with the first gear 22;

wherein, the number of teeth of the first gear 22 is greater than that of the second gear 23;

that is, the controller is coupled to the first driving motor 21, and during trimming, the controller controls the first driving motor 21 to rotate towards the rotating direction F, so as to drive the second gear 23 engaged with the first gear 22 to rotate, and further drive the rotating frame 10 to rotate towards the rotating direction F; when the cover 13 contacts an obstacle, the controller controls the first driving motor 21 to rotate towards the second direction S, so as to drive the second gear 23 engaged with the first gear 22 to rotate, and further drive the rotating frame 10 to rotate towards the second direction S; the first driving motor 21 can be decelerated by providing the first gear 22 and the second gear 23 which are engaged with each other.

To facilitate the installation of the first driving motor 21, as shown in fig. 3 and 4, in an embodiment of the present invention, the first driving device 20 further includes:

the sleeve 24 is rotatably sleeved on the outer side of the rotating frame 10 through a bearing 25, and the first driving motor 21 is connected to the sleeve 24;

at least two bearings 25 are arranged between the sleeve 24 and the main body part 11 of the swing frame 10, namely, the bearings 25 are arranged at least at the upper end and the lower end of the sleeve 24, the inner ring of each bearing 25 is fixedly connected with the main body part 11 in an interference fit manner, and the outer ring of each bearing 25 is fixedly connected with the sleeve 24 in an interference fit manner;

the sleeve 24 is further provided with a support plate 241, the support plate 241 can be fixedly connected to the outer edge of the sleeve 24 by welding, and the first driving motor 21 is fixedly coupled to the support plate 241;

in order to make the first driving device 20 more beautiful, in an embodiment of the present invention, the present invention further includes: a protective housing, which is arranged outside the first drive device 20.

In an embodiment of the present invention, as shown in fig. 1 to 6, the present invention further includes: the connecting rod 40 is fixedly connected with the sleeve 24, for example, the sleeve 24 and the connecting rod 24 can be connected in a welding mode, so that the grass mowing device 100 can be conveniently connected to a walking machine, for example, a walking vehicle, and the grass mowing device 100 can be conveniently operated.

In an embodiment of the present invention, as shown in fig. 1, 3 and 4, the grass trimmer 30 includes: a second drive means 31 and a trimming blade 32,

the second driving device 31 is fixedly coupled to the swing frame 10;

the trimming blade 32 is detachably coupled to an output shaft of the second driving device 31;

specifically, the trimming device further comprises a connecting disc 33, wherein the connecting disc 33 is fixedly coupled with an output shaft of the second driving device 31, and the trimming blades 32 are arranged at intervals along the circumferential direction of the connecting disc 33; for example, a plurality of first positioning holes are formed along the circumferential direction of the connecting plate 33, a second positioning hole is formed in the trimming blade 32, the second positioning hole of each trimming blade 32 corresponds to the plurality of first positioning holes of the connecting plate 33 one by one, and the fastening member passes through the first positioning hole and the second positioning hole in sequence.

In an embodiment of the present invention, the first positioning holes are arranged along the circumferential direction and the radial direction of the connecting plate 33, so that the size of the trimming surface formed by the trimming blade 32 can be adjusted.

The working principle of the utility model is as follows:

when the electric trimmer is powered on, the controller controls the second driving devices 31 in the covers 13 to operate, so as to drive the trimming blade 32 to rotate around itself, and when the electric trimmer is used for trimming, the controller controls the first driving motor 21 to rotate towards the rotating direction F, so as to drive the second gear 23 meshed with the first gear 22 to rotate, and further drive the rotating frame 10 to rotate towards the rotating direction F; making the grass trimmer 30 revolve around the central axis of the first driving device 20; the first driving motor 21 can also be controlled by the controller not to rotate; when the pressure contact sensor on the cover body 13 contacts with an obstacle, firstly, under the condition that the first driving motor 21 rotates, when the cover body 13 contacts with the obstacle, the elastic blocking piece 132 deforms and simultaneously extrudes the elastic piece 133, so that the elastic piece 133 is compressed and deformed, then the elastic blocking piece 132 contacts with the pressure contact sensor, the pressure contact sensor is triggered to send a contact signal, the controller receives the received signal and controls the first driving motor 21 to continue to rotate towards the rotating direction F, and therefore the second gear 23 meshed with the first gear 22 is driven to rotate, and then the rotating frame 10 is driven to rotate towards the rotating direction F, and therefore the obstacle is avoided; secondly, under the condition that the first driving motor does not rotate, when the cover body 13 contacts an obstacle, the elastic blocking piece 132 deforms and simultaneously extrudes the elastic piece 133, so that the elastic piece 133 is compressed and deformed, and then the elastic blocking piece 132 is contacted with the pressure contact sensor to trigger the pressure contact sensor to send a contact signal, the controller receives the received signal and controls the first driving motor 21 to continue to rotate towards the rotating direction F by a specified angle, so that the second gear 23 meshed with the first gear 22 is driven to rotate, and then the rotating frame 10 is driven to rotate towards the rotating direction F by the specified angle, so that the obstacle is avoided; the grass mowing device 100 can effectively avoid obstacles, is more flexible in pruning, and is large in pruning area, high in working efficiency, simple in structure and convenient to control.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Those skilled in the art will appreciate that various features of the various embodiments of the invention described hereinabove may be omitted, added to, or combined in any manner accordingly. Moreover, the simple transformation and the solution of adapting and functional structure transformation to the prior art, which can be thought of by those skilled in the art, all belong to the protection scope of the present invention.

While the invention has been shown and described with reference to various embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (10)

1. A grass mowing device, comprising:

the rotary frame (10), at least two cover bodies (13) are arranged on the rotary frame (10), and the rotary frame (10) is rotatably connected to the carrying mechanism;

at least two lawnmowers (30), each lawnmower (30) coupled within a respective enclosure (13);

when the grass mowing device (100) meets an obstacle in the pruning process, the cover body on the rotating frame (10) is contacted with the obstacle, so that the rotating frame (10) rotates relative to the carrying mechanism, and the obstacle is avoided.

2. A mowing device according to claim 1, further comprising:

a first driving device (20), wherein the first driving device (20) is connected with the swing frame (10) to drive the swing frame (10) to rotate around the central axis of the swing frame;

when the grass trimmer (100) needs to trim, the first driving device (20) drives the rotating frame (10) to carry out trimming action by the grass trimmer (30);

when the grass mowing device (100) touches an obstacle, the first driving device (20) continues to drive the rotating frame (10) to rotate so as to avoid the obstacle.

3. A mowing device according to claim 2, further comprising:

a sensor for sensing whether the swing frame (10) touches an obstacle;

a controller coupled to the first drive (20), the lawnmower (30), and the sensor;

when the grass trimmer (100) needs to trim, the controller controls the grass trimmer (30) to perform trimming action, and controls the first driving device (20) not to act;

when the grass mowing device (100) touches an obstacle, the sensor sends out a touch signal, and the controller receives the touch signal and controls the first driving device (20) to drive the rotating frame (10) to rotate for a specified angle around the rotating direction (F) so as to avoid the obstacle.

4. A grass-mowing device according to claim 2, characterized in that said revolving frame (10) comprises:

a main body part (11), wherein the main body part (11) is fixedly connected with an output shaft of the first driving device (20);

at least two connecting parts (12), wherein the connecting parts (12) extend along a direction perpendicular to the extending direction of the main body part (11), and the connecting parts (12) are arranged at intervals along the circumferential direction of the main body part (11);

wherein, the grass trimmer (30) is connected with one end of the connecting part (12) far away from the main body part (11) in a one-to-one correspondence way.

5. A grass-mowing device according to claim 3, characterized in that said sensors comprise at least two pressure-contact sensors, coupled in a one-to-one correspondence to respective said covers (13).

6. A grass cutting device according to claim 5, characterized in that the cover (13) is provided with:

an elastic baffle sheet (132), wherein one end of the elastic baffle sheet (132) is connected to the side edge of the cover body (13), the other end of the elastic baffle sheet (132) deviates to the direction departing from the cover body (13), and one end of the elastic baffle sheet (132) close to the deviating end is suitable for being arranged opposite to the pressure contact sensor;

when the cover body (13) touches an obstacle, the elastic baffle (132) deforms, so that the elastic baffle (132) deviates from one end of the cover body (13) and moves towards the cover body (13) and abuts against the pressure contact sensor;

wherein the resilient flap (132) has a tendency to return to an original position when the cover (13) is separated from the obstacle.

7. A grass cutting device as claimed in claim 6, characterized in that the flexible flap (132) is of arcuate configuration, disposed along the outer edge of the cover (13), and the arcuate opening of the flexible flap (132) is directed towards the cover (13).

8. A mowing device according to claim 6, further comprising:

an elastic member (133), one end of the elastic member (133) is coupled with one end of the elastic baffle (132) deviating from the cover body (13), and the other end of the elastic member is coupled with the cover body (13), so that one end of the elastic baffle (132) deviating from the cover body (13) has a tendency to deviate from the cover body (13).

9. A grass-mowing device according to claim 2, characterized in that said first driving means (20) comprise: a first drive motor (21), a first gear (22) and a second gear (23),

the first gear (22) is coupled to an output shaft of the first drive motor (21);

the second gear (23) is coupled on the rotating frame (10), and the second gear (23) is meshed with the first gear (22);

wherein the number of teeth of the first gear (22) is greater than the number of teeth of the second gear (23).

10. A grass-mowing device according to claim 9, characterized in that said first driving means (20) further comprise:

the sleeve (24) is rotatably sleeved on the outer side of the rotary frame (10) through a bearing (25), and the first driving motor (21) is connected to the sleeve (24).

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