SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide an intelligent lawn mower capable of realizing a grass pressing function.
An intelligent lawn mower for automatically walking and mowing grass on a ground surface, comprising: a housing; the walking system comprises a walking motor and a walking assembly driven by the walking motor; the cutting system comprises a cutting motor, a transmission shaft connected with the cutting motor and a cutting device matched and connected with the transmission shaft; the working area identification system is used for detecting the position of the intelligent mower; the control system is used for controlling the running system, the cutting system and the working area identification system to work; and the grass pressing wheel is connected with the shell.
Above-mentioned intelligent lawn mower is provided with the grass pressing wheel of being connected with the shell, and this intelligent lawn mower can also press the grass operation to the lawn when pruning the lawn, has improved work efficiency.
In one embodiment, the intelligent mower further comprises a connecting piece for connecting the grass pressing wheel with the housing, and the height of the grass pressing wheel relative to the ground can be adjusted through the connecting piece.
In one embodiment, the connector is a rigid connector.
In one embodiment, the connector is an elastic connector. In one embodiment, the rigid connecting member comprises a horizontal part and a vertical part which are connected with each other, the horizontal part is connected with the housing, the vertical part is connected with the grass pressing wheel, and the height of the grass pressing wheel is adjusted by adjusting the position of the vertical part.
In one embodiment, the horizontal portion is provided with a vertical through hole and a horizontal threaded through hole, the vertical through hole is communicated with the horizontal threaded hole, the vertical portion penetrates through the vertical through hole, and the vertical portion is fixed by screwing a bolt into the horizontal threaded through hole and abutting against the vertical portion.
In one embodiment, the housing is provided with a guide rail, and the rigid connecting piece is used for adjusting the height of the grass pressing wheel and the ground by sliding on the guide rail.
In one embodiment, the intelligent mower further comprises a height adjusting motor, an output shaft connected with the height adjusting motor, and a gear matched with the output shaft, wherein the vertical part is provided with engaging teeth, and the engaging teeth are engaged with the gear.
In one embodiment, the grass pressing wheel is arranged behind the intelligent mower.
In one embodiment, the grass pressing wheel comprises a cylindrical barrel body and a rotating shaft, the rotating shaft is arranged on the cylindrical barrel body, the cylindrical barrel body can rotate around the rotating shaft, and the rotating shaft is connected with the shell.
In one embodiment, the control system is provided with a preset walking path, and the control system controls the walking system to walk according to the preset walking path.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Referring to fig. 1 and 2, the present embodiment provides an intelligent lawn mower 100 capable of automatically walking, including: housing 110, a control system, a work area identification system, a walking system, a cutting system, a grass pressing wheel 130 and a connecting member. The control system guides the walking system and the cutting system to work cooperatively according to the feedback of the working area recognition system, and the grass pressing wheel 130 is connected with the shell 110, so that grass pressing operation can be carried out along with the intelligent mower 100 when the intelligent mower walks. The specific structure of the intelligent lawn mower 100 will be described in detail below.
The control system is a control center of the intelligent mower 100 and is used for controlling the walking system, the cutting system and the work area recognition system to work.
The work area recognition system works under the control of the control system. The work area identification system has several sensors. These sensors include sensors that reflect the operating position of the intelligent mower 100, sensors that reflect the operating status of the walking system and the road conditions, and sensors that reflect the operating status of the cutting system and the lawn conditions. Of course, sensors reflecting the energy conditions of the intelligent mower 100 may also be included.
The sensor reflecting the boundary of the working area of the intelligent mower 100 can use an electromagnetic induction device and can also use an optical device. One way to reflect the operating position of the intelligent lawn mower 100 using an electromagnetic induction device is: a signal wire is laid on the boundary of the working area of the intelligent mower 100, a sensing device for detecting signals is arranged on the intelligent mower 100, and the sensing device judges the working position of the intelligent mower 100 according to the strength, direction or waveform of the signals. One implementation of reflecting the working position of the intelligent lawn mower 100 using an optical device is to compare the collected optical information with the map information stored in the intelligent lawn mower 100 using a camera to determine the working position of the intelligent lawn mower 100. It should be noted that the manner of reflecting the position of the intelligent lawn mower 100 is not limited to the above manner, nor to the above means.
The sensors for reflecting the working state and road condition of the walking system comprise sensors for measuring various parameters such as walking speed, steering angle, position of obstacles and the like of the walking system. The common methods for measuring physical parameters such as walking speed, steering angle, and obstacle position and the sensors used are common knowledge to those skilled in the art, and therefore will not be described in detail. In conventional technical solutions, the corresponding parameters are characterized by measuring physical quantities such as the rotation speed of the wheels of the walking system, the steering angle of the wheels, and the displacement of the obstacle from the working position.
The sensors for reflecting the working state of the cutting system and the lawn condition comprise sensors for measuring parameters such as the rotating speed of the workpiece, the height of the lawn to be cut and the like. The measuring methods and the sensors used to measure the parameters of the rotation speed of the workpiece, the height of the lawn to be cut, etc. are well known to the person skilled in the art and will not be described in further detail. In conventional technical solutions, the corresponding parameters are characterized by measuring physical quantities such as the rotation speed of a motor in the cutting system, the elevation angle of the lawn tip relative to the intelligent lawn mower 100, and the like.
The cutting system operates under the control of the control system. The cutting system comprises a cutting motor, a transmission shaft connected with the cutting motor and a cutting device matched and connected with the transmission shaft. The intelligent mower 100 is provided with a protective cover at the periphery of the cutting system to prevent the cutting system from bringing danger to the operator. Preferably, the protective cover of the intelligent lawn mower 100 may be performed by the housing of the intelligent lawn mower 100.
The walking system works under the control of the control system. The walking system comprises a walking motor and a walking assembly driven by the walking motor, and is used for driving the intelligent mower 100 to move in a working area. In this embodiment, the walking assembly may include a plurality of wheels 171, and the walking motor drives at least one wheel 171, thereby realizing the self-walking of the intelligent lawn mower 100. Preferably, the number of the wheels 171 may be three, and the three wheels include a single front wheel located in front of the housing 110 and a pair of parallel rear wheels located in rear of the housing 110, the pair of rear wheels are connected below the housing 110 through an axle supported on the housing 110, the pair of rear wheels are provided as driving wheels in this embodiment, and the front wheel is provided as a supporting wheel, i.e., a driven wheel. The intelligent mower 100 is stably moved on the ground by the three wheels. Of course, one skilled in the art could replace a pair of drive wheels of the three wheels with front wheels and a single support wheel with rear wheels. The number of the wheels 170 may be four, and the four wheels include a pair of front wheels located in front of the housing 110 and a pair of parallel rear wheels located in rear of the housing 110, the pair of rear wheels are connected to the lower side of the housing 110 through an axle supported on the housing 110, the pair of rear wheels are driving wheels in this embodiment, and the front wheels are universal wheels. Of course, one skilled in the art may connect a pair of front wheels to the underside of the housing 110 via an axle supported on the housing 110, with the front wheels being configured as drive wheels and a pair of rear wheels being configured as universal wheels. Of course, the number of the wheels 171 may be set according to actual conditions, and the position and the number of the driving wheels may be set according to actual conditions.
The walking assembly can further comprise a crawler wheel and a crawler belt, the crawler belt is sleeved on the periphery of the crawler wheel, and the walking motor drives the crawler wheel to rotate, so that the crawler belt is driven to move, and the intelligent mower 100 can walk automatically. This walking subassembly has included foretell athey wheel and track structure, very big reduction the intelligent lawn mower to the pressure on lawn, reduced the destruction on lawn to make frictional force bigger, difficult skidding. In this way, the intelligent mower 100 has better off-road maneuverability and can be adapted to a variety of road surfaces.
The grass pressing wheel 130 is connected with the housing 110, and when the intelligent mower 100 travels, the grass pressing wheel 130 moves along with the intelligent mower 100 to perform grass pressing operation on the lawn. In this embodiment, the bottom of the grass pressing wheel 130 can move up and down relative to the bottom of the walking assembly, the walking assembly walks on the lawn, and the height of the grass pressing wheel 130 relative to the bottom of the walking assembly is adjusted according to the grass pressing height requirement. And the walking assembly keeps a proper distance from the grass pressing wheel 130, preferably, the intelligent mower keeps the grass pressing wheel 130 and the walking assembly out of contact during walking whether advancing, backing or turning. This grass-pressing wheel 130 can set up in the place ahead or the rear of running gear to keep suitable distance, make it can not contact with running gear, also can set up between the running gear of both sides, and grass-pressing wheel 130 keeps certain distance with the running gear that is located its both sides in the direction of both sides, makes it not contact with running gear all the time. In the embodiment, the grass pressing wheel 130 is connected with the housing 110 through the rigid connecting member 150, and the height of the grass pressing wheel 130 can be adjusted by changing the position of the rigid connecting member 150, so as to meet different grass pressing requirements. According to the intelligent mower, the rigid connecting piece 150 is connected with the grass pressing wheel 130, the rigid connecting piece 150 can apply pressure towards the ground to the grass pressing wheel 130, when the mass of the grass pressing wheel 130 is small, the lawn can be pressed to a low height, the intelligent mower 100 bears a small load, the power of a walking system can be kept in a small range, and resources are saved. Further, the direction of the intelligent mower 100 is set to be forward, and the opposite direction is set to be backward, and the grass pressing wheel 130 is disposed backward of the intelligent mower 100. In this embodiment, the grass pressing wheel 130 may include a cylindrical barrel 131 and a rotating shaft 133, the rotating shaft 133 being provided on the cylindrical barrel 131 such that the cylindrical barrel 131 is rotatable about the rotating shaft 133, the rotating shaft 133 being connected to the rigid connection member 150. When the intelligent mower 100 walks, the cylindrical barrel 131 rotates along with the intelligent mower, so that the grass pressing effect is better. Of course, the grass pressing wheel 130 may also comprise other shapes of cylinders and rotating shafts, and other shapes of cylinders may also be directly connected to the rigid connection member 150. In other embodiments, the connecting member may also be an elastic connecting member, and the height of the grass pressing wheel 130 may be adjusted according to the weight of the grass pressing wheel 130, the length between the grass pressing wheel 130 and the housing 110 connected by the elastic connecting member, and the like, according to factors such as the elasticity of the elastic connecting member. Of course, the grass pressing wheel 130 can also be connected with the housing 110 through other connecting members, and the height of the grass pressing wheel 130 can be adjusted through the connecting members.
In this embodiment, the grass pressing wheel 130 may be provided with a plurality of grass pressing regions, the grass pressing regions may be relatively movable, and the grass pressing area of the grass pressing wheel 130 may be changed by the relative movement between the grass pressing regions, thereby changing the grass pressing width of the grass pressing wheel 130.
In this embodiment, the control system may be provided with a preset traveling path, and the control system controls the traveling system to travel according to the preset traveling path, and the grass pressing wheel 130 performs grass pressing operation according to the preset traveling path. Referring to fig. 3, the intelligent mower 100 walks, cuts and presses grass along a preset walking path within a working range of a boundary 200 surrounding a city, the preset walking path may be "chuan" shaped, the intelligent mower 100 moves forward from an end a to an end B along a straight line in a row direction, then rotates 90 degrees to the right, and moves forward to an end C along a straight line in a column direction, a distance from the end B to the end C may be set according to a grass pressing range, a grass pressing requirement and other practical conditions of the grass pressing wheel 130, then continues to rotate 90 degrees to the right, moves forward from the end C to the end D along a straight line in a row direction, then rotates 90 degrees to the left, moves forward to an end E along a straight line in a column direction, then rotates 90 degrees to the left, and then repeats the walking path. One skilled in the art will appreciate that the intelligent mower 100 may also walk along other walking paths.
In this embodiment, the rigid connection member 150 may include a horizontal portion 151 and a vertical portion 153 connected to each other, the horizontal portion 151 being connected to the housing 110, and the vertical portion 153 being connected to the grass pressing wheel 130, where the height of the grass pressing wheel 130 may be adjusted by adjusting the position of the vertical portion 153. The horizontal portion 151 functions to extend the space of the smart mower 100 outward so that the grass pressing wheel 130 does not interfere with the housing 110, the wheels 171, and the like. Preferably, the horizontal portion 151 may be parallel to the ground, and the vertical portion 153 is perpendicular to the ground. Those skilled in the art will appreciate that the horizontal portion 151 may be disposed at other angles, and after the vertical portion 153 is connected to the horizontal portion 151, the grass pressing wheel 130 will not interfere with other components of the intelligent mower 100; the vertical portion 153 may be disposed at other angles, and the height of the grass pressing wheel 130 may be changed by changing the position of the vertical portion with respect to the horizontal portion 151.
The horizontal portion 151 and the vertical portion 153 may be connected in various manners, referring to fig. 1, in an embodiment, the horizontal portion 151 is provided with a vertical through hole 155 and a horizontal threaded through hole 157, the vertical through hole 155 may be vertical to the ground or at another suitable angle, the horizontal threaded hole 157 may be parallel to the ground or at another suitable angle, and the vertical through hole 155 and the horizontal threaded hole 157 are communicated with each other. The vertical portion 153 can pass through the vertical through hole 155, the height of the grass pressing wheel 130 can be changed by changing the amount of the vertical portion 153 passing through the vertical through hole, and after the vertical portion 153 is adjusted to a proper position, the bolt 191 is screwed into the horizontal threaded through hole 157 and abuts against the vertical portion 153 with the adjusted position, so that the vertical portion 153 is fixed, and the height of the grass pressing wheel 130 is fixed.
Referring to fig. 2, in the second embodiment, the horizontal portion 151 is formed with a vertical threaded through hole 159, the threaded through hole 159 can be vertical to the ground, the vertical portion 153 is provided with corresponding threads, the vertical portion 153 can be screwed into the vertical threaded through hole 159, and the height of the grass pressing wheel 130 can be adjusted by changing the depth of the vertical threaded hole 159 into which the vertical portion 153 is screwed. After the grass pressing wheel 130 is adjusted to a proper height, the vertical portion 153 may be further fastened by a fastener or the like.
In a third embodiment, the smart lawn mower 100 may further include a height adjustment motor, an output shaft, and a gear. The output shaft is connected with the height adjusting motor and can output the rotating power of the height adjusting motor, and the gear is connected with the output shaft and can rotate under the driving of the output shaft. The vertical portion 153 is provided with engaging teeth, so that the vertical portion 153 is shaped like a rack, the engaging teeth on the vertical portion 153 are engaged with the gear, and the gear can rotate to drive the vertical portion 153 to move up and down, thereby changing the height of the grass pressing wheel 130. Furthermore, control system and height adjustment motor, control system can control height adjustment motor, when intelligent lawn mower 100 walked, can adjust the height of grass pressing wheel 130 through just reversing height adjustment motor for intelligent lawn mower 100 can form different grass pressing effects in different positions according to different demands when the operation. For example, the control system in the intelligent lawn mower 100 drives the height adjustment motor to make the grass pressing wheel 130 be at the lowest height, then during the advancing process, the control system drives the height adjustment motor to make the height of the grass pressing wheel 130 gradually increase, after the highest threshold value is reached, the height of the grass pressing wheel 130 is gradually reduced to the lowest height, and in this cycle, the grass pressing height has gradual change along the walking path of the intelligent lawn mower 100. In order to pursue a better artistic effect, a specialized pattern such as a person, an animal, a plant, a building, etc. is formed on the lawn, the control system of the intelligent lawn mower 100 stores a walking path designed according to the pattern in advance, and adjusts the height of the grass pressing wheel 130 at different positions according to the requirement of the pattern design, the control system presets the height variation of the grass pressing wheel 130 according to the preset walking path, and the control system controls the height adjustment motor to realize the height variation of the grass pressing wheel 130.
In a fourth embodiment, the housing 110 of the intelligent lawn mower 100 may be provided with a guide rail on which the rigid connector 150 can slide, and the rigid connector 150 has a motion component perpendicular to the ground when sliding. When the rigid connecting piece 150 slides, the grass pressing wheel 130 connected with the rigid connecting piece moves along with the rigid connecting piece, so that the height of the grass pressing wheel is adjusted.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.