WO2021103804A1 - Tondeuse automatique - Google Patents

Tondeuse automatique Download PDF

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Publication number
WO2021103804A1
WO2021103804A1 PCT/CN2020/118333 CN2020118333W WO2021103804A1 WO 2021103804 A1 WO2021103804 A1 WO 2021103804A1 CN 2020118333 W CN2020118333 W CN 2020118333W WO 2021103804 A1 WO2021103804 A1 WO 2021103804A1
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WO
WIPO (PCT)
Prior art keywords
lawn mower
automatic lawn
boundary
grass
cutting
Prior art date
Application number
PCT/CN2020/118333
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English (en)
Chinese (zh)
Inventor
查霞红
赵凤丽
程坤
Original Assignee
苏州宝时得电动工具有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201911179890.6A external-priority patent/CN112840828A/zh
Priority claimed from CN201922074784.3U external-priority patent/CN211721119U/zh
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2021103804A1 publication Critical patent/WO2021103804A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters

Definitions

  • the invention relates to the technical field of lawn mowers, in particular to an automatic lawn mower.
  • Lawn mower also known as lawn mower, lawn mower, etc., is a mechanical tool used to mow lawns, vegetation, etc.
  • This type of lawn mower includes a body and a grass cutting mechanism.
  • the grass cutting mechanism is installed below the body or The front end of the fuselage, etc., can generally cut and trim the lawn in the horizontal direction. In other words, the grass in the lawn grows vertically upwards, and the grass cutting mechanism cuts the grass that grows vertically upwards in the horizontal direction.
  • the grass in the lawn not only grows along the vertical direction of the ground, it also grows out to the periphery in the horizontal direction. Because at the border of the lawn, some grasses will extend to the periphery and grow beyond the border, and the part of the grass that grows beyond the border is closer to the ground, and its height may be lower. Therefore, when the lawn mower cuts and trims the lawn in the horizontal direction, at the border of the lawn, the grass that grows along the vertical ground can be trimmed, but the part of the grass that extends beyond the border and grows in the horizontal direction can be trimmed. Unable to be effectively trimmed, so that the border of the lawn becomes less tidy and messy due to the different growth trends of the grass. Especially on both sides of the driveway, most users hope that the boundaries of the lawn are still neat and uniform, so they may need to manually trim the edges, which will add a lot of trouble to the users and reduce the user experience.
  • the technical problem to be solved by the embodiments of the present invention is to provide an automatic lawn mower, which can detect the boundary of the working area and carry out the grass on the lawn boundary in the working area along the vertical plane. Trim so that the lawn boundary is more neat in the vertical plane.
  • the automatic lawn mower which can move and work in a working area.
  • the automatic lawn mower includes:
  • a walking module installed on the fuselage, which is used to drive the automatic lawn mower to move;
  • a boundary detection module installed on the fuselage, which is used to detect the boundary of the working area and output a boundary detection signal
  • a grass trimming mechanism installed at the side of the fuselage.
  • the grass trimming mechanism forms a cutting area during operation.
  • the angle between the plane of the cutting area and the ground is greater than or equal to 60 degrees and less than or equal to 90 degrees, and is generally along
  • the automatic lawn mower extends in the front and rear directions;
  • the control module is used to control the walking module and the grass trimming mechanism.
  • a rotation mechanism is connected between the grass cutting mechanism and the fuselage, and the control module controls the rotation of the rotation mechanism so that the angle formed by the plane where the cutting area is located and the ground is at a first angle and Switch between the second angle.
  • the first angle is greater than or equal to 60 degrees and less than or equal to 90 degrees
  • the second angle is greater than or equal to 0 degrees and less than or equal to 30 degrees.
  • the automatic lawn mower includes a trimming mode, and in the trimming mode, the plane on which the cutting area is located is substantially perpendicular to the ground.
  • the automatic lawn mower has a grass cutting mode, and in the grass cutting mode, the plane on which the cutting area is located is substantially parallel to the ground.
  • the control module controls the operation of the grass trimming mechanism.
  • a wire for emitting electromagnetic signals is provided at the boundary of the working area
  • the boundary detection module includes: at least two first sensors, the first sensors are used to detect the electromagnetic signal generated by the wire to determine whether it is on one side or the opposite side of the wire; at least two A second sensor, the second sensor is used to detect the strength of the electromagnetic signal generated by the wire to determine the distance between itself and the wire.
  • control module controls the first sensor to be located on both sides of the wire, and the control module controls the second sensor to be located on both sides of the wire.
  • the boundary detection module includes a positioning sensor, and the control module receives and stores the boundary coordinates of the working area.
  • the boundary detection module includes a surface recognition sensor, and the control module recognizes the boundary of the work area based on a difference in surface features.
  • the control module controls the automatic lawnmower to start the grass trimming mechanism after it is separated from the charging device by a preset distance and/or a preset time.
  • the grass trimming mechanism includes: a drive motor; a grass trimming element connected to a shaft of the drive motor in transmission, and the grass trimming element forms a cutting area when it rotates.
  • the grass trimming element when the grass trimming element is located below the rotation center, it rotates toward the rear of the fuselage.
  • the walking module includes a walking wheel installed on the body, and the lowermost end of the cutting area is lower than the lowermost end of the walking wheel.
  • the distance between the lowermost end of the cutting area and the lowermost end of the walking wheel is less than or equal to 30 mm.
  • the walking module includes: a walking wheel installed on the body, the walking wheel includes a driving wheel and/or a driven wheel, in the forward direction of the automatic lawnmower, the grass cutting mechanism
  • the distance between the shaft center and the shaft center of the driving wheel is within a range of twice the radius of the driving wheel.
  • the automatic lawn mower further includes: a protective cover installed on the body and matched with the grass cutting mechanism, and an area where the protective cover protects the grass cutting mechanism is greater than or equal to 150 degrees.
  • the control module receives the boundary detection signal and controls the walking module to drive the automatic lawn mower to move to the boundary of the working area.
  • the boundary of the area is the lawn boundary.
  • the angle between the cutting area of the mowing mechanism and the ground is greater than or equal to 60 degrees and less than or equal to 90 degrees, and generally extends along the front and rear ends of the automatic lawn mower, so cutting into the lawn boundary will exceed the boundary to the horizontal direction The part of the grass that grows out is trimmed and cut off.
  • the lawn boundary can be made more neat and beautiful in the vertical plane, especially at both sides of the driveway, it can be ensured that the lawn boundary and the driveway are neatly aligned.
  • Figure 1 is a side view of the automatic lawn mower in the embodiment of the present invention when trimming
  • Figure 2 is a top view of the automatic lawn mower in the embodiment of the present invention when trimming
  • Figure 3 is a top view of the automatic lawn mower in the second state of the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the relative position between the first sensor and the second sensor of the automatic lawn mower in the embodiment of the present invention
  • Figure 5 is a side view of the automatic lawn mower in the first state of the embodiment of the present invention.
  • Fig. 6 is a diagram of the positional relationship between the cutting mechanism and the walking wheel of the automatic lawnmower in the embodiment of the present invention.
  • connection should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be a connection between two components, which can be directly connected or indirectly connected through an intermediary.
  • connection should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be a connection between two components, which can be directly connected or indirectly connected through an intermediary.
  • connection should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be a connection between two components, which can be directly connected or indirectly connected through an intermediary.
  • connection can be a mechanical connection or an electrical connection, or it can be a connection between two components, which can be directly connected or indirectly connected through an intermediary.
  • FIG. 1 is a side view of the automatic lawn mower in the embodiment of the invention when trimming
  • Figure 2 is a top view of the automatic lawn mower in the embodiment of the invention when trimming, as shown in the figure.
  • the automatic lawn mower may include: a body 1; a walking module installed on the body 1, which is used to drive the automatic lawn mower to move; and a boundary detection module installed on the body 1, It is used to detect the boundary of the working area and output the boundary detection signal; the grass trimming mechanism 2 installed on the side of the fuselage 1 forms a cutting area 21 when the grass trimming mechanism 2 is working, and the angle between the plane where the cutting area 21 is located and the ground It is greater than or equal to 60 degrees and less than or equal to 90 degrees, and generally extends along the front and rear ends of the automatic lawn mower; a control module, which is used to control the walking module and the grass cutting mechanism 2.
  • the control module receives the boundary detection signal and controls the walking module to drive the automatic lawn mower to move to the boundary of the working area.
  • the boundary of the area is the lawn boundary.
  • the control module controls the automatic lawn mower to lean the side of the cutting mechanism 2 against the lawn boundary 7, and the body 1 of the automatic lawn mower is along the lawn boundary 7. Drive in the extension direction.
  • the angle between the cutting area 21 of the mowing mechanism 2 and the ground is greater than or equal to 60 degrees and less than or equal to 90 degrees, and generally extends along the front and rear ends of the automatic lawn mower, so cutting into the lawn boundary 7 will exceed the boundary 7 direction
  • the part of the grass that extends in the horizontal direction is trimmed and cut off.
  • the lawn boundary 7 can be made more neat and beautiful in the vertical plane, especially on both sides of the driveway, it can be ensured that the lawn boundary 7 and the driveway are neatly aligned.
  • the automatic lawn mower includes a body 1, on which a grass cutting mechanism 2 is installed, a walking module used for moving the automatic lawn mower, and the walking module and the grass cutting mechanism are Controlled control module.
  • the walking module may be installed on the walking wheels 3 on the fuselage 1.
  • the walking wheels 3 may specifically include a front wheel 31 and a rear wheel 32 on the side of the fuselage 1.
  • the front wheel 31 may be two wheels. They are respectively located on the left and right sides of the front end of the fuselage 1, and there may also be two rear wheels 32, which are respectively located on the left and right sides of the rear end of the fuselage 1.
  • the walking wheel includes a driving wheel and a driven wheel.
  • the rear wheel 32 is the driving wheel
  • the front wheel 31 is the driven wheel.
  • the axis of the cutting mechanism may be at a distance A from the axis of the driving wheel. Within 2 times the radius of the driving wheel.
  • the weight of the driving wheel occupies most of the weight of the entire automatic lawn mower. When the cutting mechanism is working, it will vibrate. Therefore, when the cutting mechanism is close to a certain range of the driving wheel, the automatic lawn mower can be effectively improved. The overall stability of the machine at work.
  • the cutting area 21 formed by the cutting mechanism 2 during operation exceeds the outermost boundary of the driving wheel in the left and right direction of the fuselage 1, so that the cutting area 21 formed by the cutting mechanism 2 during operation and the driving wheel
  • the phase staggered arrangement can make the mowing mechanism 2 get closer to the driving wheel under the premise of avoiding the cutting area 21 from touching the driving wheel.
  • the grass cutting mechanism 2 can also be installed in front of the front wheels 31 or behind the rear wheels 32 on the side of the fuselage 1, which is not limited in this application.
  • a cutting mechanism 8 may be installed at the bottom of the middle of the fuselage 1, and the cutting mechanism 8 forms a cutting area 21 during operation, and the plane of the cutting area 21 is substantially parallel to the ground. , It is used to cut and trim the grass that grows upward through the middle of the lawn path by the automatic lawn mower.
  • the grass cutting mechanism 2 may include: a driving motor; and a grass cutting element 22 connected to a shaft of the driving motor, which forms a cutting area 21 when the grass cutting element 22 rotates.
  • the angle between the plane of the cutting area 21 formed when the cutting element 22 rotates and the ground is greater than or equal to 60 degrees and less than or equal to 90 degrees, and generally along the line
  • the automatic lawn mower extends in the front and rear directions.
  • the cutting area 21 formed when the cutting element 22 rotates does not necessarily need to extend completely along the front and rear ends of the automatic lawn mower.
  • the cutting area 21 formed when the cutting element 22 rotates only needs to form an appropriate angle with the ground, and the cutting area 21 formed when the cutting element 22 rotates also only needs to be formed between the front and rear ends of the automatic lawn mower.
  • the right angle is enough.
  • the angle between the plane where the cutting area 21 is located and the ground can be between 60 degrees and 90 degrees. In this interval, the automatic lawn mower can trim the grass along the vertical plane of the lawn boundary 7 well. The effect of lawn boundary 7 is better after mowing.
  • the automatic lawn mower may have a trimming mode.
  • the plane on which the cutting area 21 is located is substantially perpendicular to the ground, for example, the cutting area 21
  • the angle between the plane and the ground can be about 90 degrees. In this way, the grass at the border 7 of the lawn does not incline after mowing, and its edge is basically directly perpendicular to the ground.
  • the angle between the plane where the cutting area 21 is located and the front and rear direction of the automatic lawn mower may be between 0 degrees and 45 degrees. In this interval, the automatic lawn mower can better trim the grass of the lawn boundary 7 along the vertical plane, and the effect of the lawn boundary 7 after trimming is better. For example, when the angle is equal to 0, as shown in FIG. 2, when the cutting mechanism 2 of the automatic lawn mower trims the grass at the lawn boundary 7, the loss of grass is the least. For another example, when the angle is larger, the cutting mechanism 2 of the automatic lawn mower cuts more grass that is lost when cutting the grass at the lawn boundary 7.
  • the lower end of the cutting area 21 formed by the lawn mower 2 can generally be Lower than the lowermost end of the traveling wheel 3, the distance between the lowermost end of the cutting area 21 and the lowermost end of the traveling wheel 3 may preferably be less than or equal to 30 mm. In this way, when the automatic lawn mower trims the grass of the lawn boundary 7 along the vertical plane, the grass can be trimmed to a sufficient depth in the vertical plane to ensure that the lawn boundary 7 is neat at a certain depth in the vertical plane.
  • a rotating mechanism may be connected between the cutting mechanism 2 and the fuselage 1, and the control module controls the rotating mechanism Rotate to make the cutting mechanism 2 rotate, so that the angle formed by the plane where the cutting area 21 formed by the cutting mechanism 2 is located and the ground is switched between the first angle and the second angle.
  • the first angle may be greater than or equal to 60 degrees and less than or equal to 90 degrees
  • the second angle may be greater than or equal to 0 degrees and less than or equal to 30 degrees. That is, the grass trimming mechanism 2 is switched between being located at the side of the fuselage 1 and located at the bottom of the fuselage 1.
  • FIG. 3 is a top view of the automatic lawn mower in the second state of the embodiment of the present invention.
  • the angle between the plane where the cutting area 21 formed by the cutting mechanism 2 works and the ground is It is greater than or equal to 0 degrees and less than or equal to 30 degrees, preferably substantially parallel to the ground.
  • the automatic lawn mower can trim the border 7 of the lawn at the first angle; the cutting mechanism 2 can assist the cutting mechanism 8 to trim the lawn at the non-edge 7 at the second angle, and the two cutting mechanisms can be enlarged The range of the trimming area when the automatic lawn mower is traveling, improving the efficiency of trimming.
  • the control module controls the rotation of the cutting mechanism 2 so that the automatic lawn mower is switched between the first state and the second state. Therefore, the cutting area 21 formed by the cutting mechanism 2 is clamped between the plane where the cutting area 21 is located and the ground. The angle will switch between 0 degrees and 90 degrees. The angle between the plane where the cutting area 21 formed by the cutting mechanism 2 is located and the front and rear ends of the automatic lawn mower can be switched between 0 degrees and 90 degrees.
  • the boundary detection module may include: at least two first sensors 5, the first sensors 5 are used to detect the electromagnetic signal generated by the wire 4 to determine whether it is on one side or the opposite side of the wire 4; A second sensor 6, the second sensor 6 is used to detect the strength of the electromagnetic signal generated by the wire 4 to determine the distance between itself and the wire 4.
  • the second sensor 6 may also be a magnetic field sensor.
  • the first sensor 5 may be a magnetic field sensor, and the second sensor 6 may be a magnetic field sensor.
  • the boundary detection module can detect the boundary of the working area and output a boundary detection signal.
  • the control module controls the operation of the lawn mower.
  • the control module of the automatic lawn mower controls the walking module to move so that the first sensors 5 are respectively located on both sides of the wire 4.
  • the distance from the middle of the two first sensors 5 to the end of the side of the body 1 where the grass trimming mechanism 2 is located is substantially equal to the distance from the wire 4 to the border 7 of the lawn.
  • the two first sensors 5 of the automatic lawn mower detects the electromagnetic signal generated by the wire 4 to automatically determine which side of the wire 4 it is on.
  • the automatic lawn mower corrects the forward direction by itself, and adjusts the forward direction so that the position of the wire 4 can be restored to the middle of the two first sensors 5 in the later stage, so as to control the automatic lawn mower to automatically follow the boundary of the lawn. 7 forward effect.
  • Fig. 4 is a schematic diagram of the relative position between the first sensor and the second sensor of the automatic lawn mower in the embodiment of the present invention.
  • the second sensor 6 can be arranged at any position in the circumferential direction of the first sensor 5.
  • the second sensor 6 is arranged above, below, left or right of the first sensor 5.
  • the first sensor 5 and the second sensor 6 located on both sides of the wire 4 are arranged as symmetrically as possible, so that it is convenient for the second sensors 6 on both sides to detect the intensity of the electromagnetic signal generated by the wire 4 and then calculate their own distance to the wire.
  • the distance of 4. When the automatic lawn mower travels along the border 7 of the lawn for trimming operations, if the automatic lawn mower deviates from the border 7 of the lawn during the advancing process, there will be two second lines located on both sides of the wire 4. The sensor 6 is shifted to one side of the wire 4 or the wire 4 is still located between the two second sensors 6, but the wire 4 slowly approaches one of the second sensors 6.
  • the two second sensors of the automatic lawn mower detects that the strength of the electromagnetic signal generated by the wire 4 is different, and the distance between the automatic lawn mower and the wire 4 is calculated according to the strength of the electromagnetic signals detected by the two second sensors 6 to control the automatic lawn mower to return to the wire 4 to be located The position between the two second sensors 6 or the position between the two first sensors 5.
  • the mowing mechanism 2 at the border 7 of the lawn can cut the grass that grows vertically upwards in the horizontal direction.
  • another wire 4 arranged along the border 7 can be buried at the border 7 of the lawn.
  • the distance between the wire 4 and the border 7 is slightly larger than the distance between the automatic lawn mower and the border 7 of the lawn in the first state.
  • the boundary detection module may include a positioning sensor, which is used to locate the position of the automatic lawn mower, and the control module receives and stores the boundary coordinates of the working area.
  • the user operates the automatic lawn mower in advance, so as to input the position information of the working area boundary and/or the position information of the boundary of the lawn to be trimmed to the automatic lawn mower.
  • the control module controls the walking module to drive the automatic lawn mower to move to the stored work area for trimming, or move to the work area for repairs. Trimming is performed at the edge of the edge.
  • the boundary detection module may include a surface recognition sensor, and the control module may recognize the boundary of the working area based on the difference in surface features.
  • the automatic lawn mower can use the surface recognition sensor to identify the boundary of the work area based on the difference in surface features to determine the boundary of the lawn and the road that needs to be trimmed.
  • the surface recognition sensor can be processed according to the boundary of strong contrast or the boundary of the reflective situation to identify the boundary of the working area, that is, the boundary of the lawn and the road.
  • the surface recognition sensor can be an image acquisition device, a radar, etc.
  • processing is performed according to the boundaries of the strong contrast of the image color to identify the boundary of the work area; in the case of radar, the boundaries of the work area are processed based on the strong contrast of the reflected signal to identify the boundary of the work area.
  • the automatic lawn mower can be charged in the charging device, and after receiving the user setting instruction, the automatic lawn mower will start after a preset distance and/or a preset time from the charging device. Cutting mechanism to trim the border of the lawn. After the automatic lawn mower runs for a certain period of time or after a certain distance, it stops running or returns to the charging device.
  • the automatic lawn mower may include: a protective cover 9 fitted on the machine body and matched with the grass cutting mechanism, and the area where the protective cover 9 protects the grass cutting mechanism 2 may be greater than or equal to 150 degrees.
  • the protective cover 9 is generally installed around the upper end of the cutting element of the cutting mechanism 2, so as to prevent the grass clippings or soil generated by the cutting mechanism 2 from flying upwards and hitting surrounding people or objects.
  • the protective cover 9 may be arranged symmetrically or asymmetrically, for example, more on one side and less on the other side.
  • FIG. 5 shows the automatic cutting mechanism in the embodiment of the present invention.
  • the back of the body rotates, that is, the cutting mechanism 2 rotates clockwise.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention concerne une tondeuse à gazon automatique capable de se déplacer et de travailler dans une zone de travail. La tondeuse à gazon automatique comprend : un corps de machine (1) ; un module de marche monté sur le corps de machine (1) et utilisé pour entraîner la tondeuse à gazon automatique en déplacement ; un module de détection de limite monté sur le corps de machine (1) et utilisé pour détecter la limite de la zone de travail et émettre un signal de détection de limite ; un mécanisme de coupe d'herbe (2) monté sur le bord latéral du corps de machine (1), une zone de coupe (21) étant formée lorsque le mécanisme de coupe d'herbe (2) fonctionne, l'angle entre un plan où la zone de coupe (21) est située et le sol étant supérieur ou égal à 60 degrés et inférieur ou égal à 90 degrés, et la zone de coupe s'étendant généralement le long de la direction des extrémités avant et arrière de la tondeuse à gazon automatique ; et un module de commande utilisé pour commander le module de marche et le mécanisme de coupe d'herbe (2). La tondeuse à gazon automatique peut détecter automatiquement la limite d'une zone de travail et couper l'herbe sur la limite d'une pelouse dans la zone de travail le long d'un plan vertical, de sorte que la limite de la pelouse soit nette dans le plan vertical.
PCT/CN2020/118333 2019-11-27 2020-09-28 Tondeuse automatique WO2021103804A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201911179890.6A CN112840828A (zh) 2019-11-27 2019-11-27 自动割草机
CN201911179890.6 2019-11-27
CN201922074784.3U CN211721119U (zh) 2019-11-27 2019-11-27 自动割草机
CN201922074784.3 2019-11-27

Publications (1)

Publication Number Publication Date
WO2021103804A1 true WO2021103804A1 (fr) 2021-06-03

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PCT/CN2020/118333 WO2021103804A1 (fr) 2019-11-27 2020-09-28 Tondeuse automatique

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WO (1) WO2021103804A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542800A (zh) * 2012-07-09 2014-01-29 迪尔公司 用于机器人割草机的边界传感器组件、机器人割草机和机器人割草机系统
US20140026528A1 (en) * 2012-07-26 2014-01-30 Bruno Thiboutot Resilient mounting joint for a sickle bar
US20140260161A1 (en) * 2008-01-20 2014-09-18 James W. Lancaster Height of cut adjustment system for mower cutting deck
CN104186100A (zh) * 2014-08-12 2014-12-10 北京时代沃林科技发展有限公司 一种新型果园树盘下除草机
CN106416596A (zh) * 2016-11-04 2017-02-22 成都森钰泓绿化工程有限公司 一种具有可调切割角度的割草机
CN107231880A (zh) * 2017-07-18 2017-10-10 广州市妙伊莲科技有限公司 一种基于无人机的除草机
CN206698721U (zh) * 2017-04-17 2017-12-05 陈曦 一种园林工程割草装置
CN206713419U (zh) * 2017-03-29 2017-12-08 赵静梵 一种小型可调切割角度割草机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140260161A1 (en) * 2008-01-20 2014-09-18 James W. Lancaster Height of cut adjustment system for mower cutting deck
CN103542800A (zh) * 2012-07-09 2014-01-29 迪尔公司 用于机器人割草机的边界传感器组件、机器人割草机和机器人割草机系统
US20140026528A1 (en) * 2012-07-26 2014-01-30 Bruno Thiboutot Resilient mounting joint for a sickle bar
CN104186100A (zh) * 2014-08-12 2014-12-10 北京时代沃林科技发展有限公司 一种新型果园树盘下除草机
CN106416596A (zh) * 2016-11-04 2017-02-22 成都森钰泓绿化工程有限公司 一种具有可调切割角度的割草机
CN206713419U (zh) * 2017-03-29 2017-12-08 赵静梵 一种小型可调切割角度割草机
CN206698721U (zh) * 2017-04-17 2017-12-05 陈曦 一种园林工程割草装置
CN107231880A (zh) * 2017-07-18 2017-10-10 广州市妙伊莲科技有限公司 一种基于无人机的除草机

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