WO2024184168A1 - Procede et dispositif pour le travail mecanique du sol entre les plants d'une meme rangee - Google Patents
Procede et dispositif pour le travail mecanique du sol entre les plants d'une meme rangee Download PDFInfo
- Publication number
- WO2024184168A1 WO2024184168A1 PCT/EP2024/055183 EP2024055183W WO2024184168A1 WO 2024184168 A1 WO2024184168 A1 WO 2024184168A1 EP 2024055183 W EP2024055183 W EP 2024055183W WO 2024184168 A1 WO2024184168 A1 WO 2024184168A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tool
- geared motor
- shaft
- interceps
- feeler
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B39/00—Other machines specially adapted for working soil on which crops are growing
- A01B39/12—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture
- A01B39/18—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture for weeding
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B39/00—Other machines specially adapted for working soil on which crops are growing
- A01B39/12—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture
- A01B39/16—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture for working in vineyards, orchards, or the like ; Arrangements for preventing damage to vines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B39/00—Other machines specially adapted for working soil on which crops are growing
- A01B39/20—Tools; Details
- A01B39/26—Arrangements for protecting plants, e.g. fenders
Definitions
- TITLE METHOD AND DEVICE FOR MECHANICALLY WORKING THE SOIL BETWEEN PLANTS IN THE SAME ROW
- the present invention relates to the general field of row crops such as, for example, vines, orchards or even nurseries. It relates more specifically to a method for mechanically working the soil between plants in the same row, but also to a device for working the soil between plants in the same row implementing said method.
- interplant tools which allow different types of agricultural work to be carried out, such as, for example, hoeing, digging, starting or even loosening.
- F interceps implements a specific tool mounted pivotally on a tool holder around a vertical axis so as to be able to retract upon contact with a plant.
- the retraction of the tool is, in a conventional manner, carried out using a sensor mounted above the ground in front of the tool, in the direction of progression of the tool.
- the sensor will pivot and cause the said tool to be erased.
- the sensor returns to its initial position and causes the tool to return under the row of plants, between said plant and the adjacent plant.
- Such interceps are described in particular in patent applications FR 3 093 273, FR 3 124 349, FR 2 964 006 or CN 114 009 161.
- the tool is retracted via a hydraulic system using, for example, a distributor controlled by the sensor, solenoid valves, single or double-acting cylinders or even pressure switches.
- the aim of the present invention is therefore to propose a method for mechanically working the soil of a row crop field and an inter-row cultivator which can accommodate different types of tool, being suitable for an agricultural robot with electrical motorization and easily adjustable tools, and allowing precise and rapid mechanical working of the soil over an increased surface area between the plants in the same row while respecting the integrity of said plants.
- a method for mechanically working the soil of a crop field in a row, along and between the plants P of the same row, using an inter-row cultivator comprising at least one tool holder receiving a tool intended for working the soil and fixed to the free end of a shaft of an electric gear motor to pivot said tool about a vertical axis between a working position and a cleared position, and a sensor arranged to detect the presence of a plant P, arranged above the ground and at the front of the tool in the direction of movement of the inter-row cultivator, pivotally mounted on said tool holder about said axis between an initial position and a limit position and associated with return means tending to return it to its initial position, remarkable in that it comprises at least the following steps: a) positioning the tool in the working position and the sensor in the initial position and moving the inter-row cultivator along a row of plants P, b) detecting a pivoting of the feeler at least towards its limit position, c) checking a pivoting of the feeler at least
- Step a) is preferably preceded by a step of initializing the interceps consisting of placing the tool in its working position when the interceps is powered up.
- step h) if during step h) a pivoting of the probe at least in the direction of its limit position is detected, then a rotation of the shaft of the geared motor is triggered to pivot the tool in the direction of its released position in order to return the probe to its initial position.
- Said method advantageously comprises, after step h), a clearing step consisting of positioning the tool in its working position and triggering an alternating rotation of the geared motor so that the tool oscillates in order to knock off the earth present on said tool.
- said method comprises, after step h), a transport step consisting of positioning the tool in a work-rest position located beyond its released position in which the tool is in a situation allowing the safe movement of the inter-row cultivator outside the row crop field.
- the first angular sensor is an incremental encoder integrated into an electric motor of the geared motor.
- the electric motor is of the low-voltage, permanent magnet brushless motor type.
- the second angular sensor is advantageously of the Hall effect sensor type based on the magnetic field emitted by a magnet fixed to the probe and inducing an electric current in the winding of a sensor fixed to the tool holder.
- the interceps includes a rear mechanical stop fixed to the outside of the gear motor and against which the tool holder comes to rest.
- FIG 1 is a front perspective view of an interceptor according to the invention
- FIG 2 is a top view of the intersection of Figure 1,
- FIG 3 is a vertical sectional view of the intersection of Figure 4,
- FIG 4 is a partial top view of the interceps of figure 1 implemented in a row of plants, its sensor being at the start of contact with one of said plants,
- FIG 5 is a top view of the interceptor of Figure 6, its feeler having pivoted through a predetermined angle A,
- FIG 6 is a top view of the interceps of Figure 6, its tool having pivoted by an angle Bi corresponding to the predetermined angle A,
- FIG 7 is a partial top view of the interceps of Figure 1 implemented in a row of plants, its feeler being almost at the end of contact with one of said plants,
- FIG 8 is a top view of the interceptor of Figure 6, its feeler having pivoted through a predetermined angle A,
- FIG 9 is a partial top view of the interceps of figure 1 implemented in a row of plants, its sensor no longer being in contact with one of said plants
- FIG 10 is a top view of the intersection of Figure 6, its feeler and tool pivoting to return to their initial position
- FIG 11 is a top view of the intersection of Figure 6, its feeler and tool having returned to their initial and working positions respectively,
- FIG 12 is a partial top view of the intersection of Figure 1, its feeler and tool being respectively in their initial and working positions,
- FIGs 1 to 3 there is shown an interplant tool 1 according to the invention, hereinafter conventionally referred to as "interceps", attached to an agricultural machine moving on the ground and being, for example, of the tractor, straddle tractor or even electrically powered robot type, said interceps 1 making it possible to mechanically work the soil between the plants of the same row of a row crop field and to carry out different types of agricultural work such as, for example, hoeing, digging, starting or even decompaction, the rows of plants and agricultural machine not being shown so as not to overload Figures 1 to 3.
- interceps attached to an agricultural machine moving on the ground and being, for example, of the tractor, straddle tractor or even electrically powered robot type, said interceps 1 making it possible to mechanically work the soil between the plants of the same row of a row crop field and to carry out different types of agricultural work such as, for example, hoeing, digging, starting or even decompaction, the rows of plants and agricultural machine not being shown so as not to overload Figures 1 to 3.
- the interceps 1 is electrically powered advantageously by an electrical energy source on board the agricultural machine.
- said electrical energy source may be of the generator type operating with gasoline or an agricultural generator coupled to a power take-off of said agricultural machine and converting the mechanical rotational energy into an electric current to advantageously recharge a plurality of batteries.
- said electrical energy source comprises all or part of the following elements: alternator, rectifier, regulator, converter and transformer.
- the electric motorization of the interceps 1 is connected to the energy source already on board said robot.
- the interceps 1 fulfills the following functions: motorization, detection, control and work, and comprises for this at least: - an electric geared motor 2 arranged to be fixed to the agricultural machine and whose shaft 3 extends towards the ground and pivots around a vertical axis 4, said geared motor 2 being associated with a first angular sensor, not shown, to determine the absolute angular position of said shaft 3, - a tool holder 5 fixed on the free end of said shaft 3 of the geared motor 2 receiving at least one tool 6 intended for working the soil,
- a feeler 7 arranged to detect the presence of a plant, arranged above the ground and in front of the tool 6 in the direction of movement of the inter-row 1, extending substantially perpendicular to the axis 4 of rotation of the shaft 3 of the geared motor 2, and being pivotally mounted on said tool holder 5 about said axis 4 of rotation of the shaft 3, and being associated with a second angular sensor 8 to determine the angular position of said feeler 7, and
- a current variator advantageously associated with an electronic control card for modulating the speed of rotation of the shaft 3 of the geared motor 2 according to the instructions of said control card determined by the measurements of the first and second angular sensors 8.
- substantially parallel or “substantially perpendicular” refers to elements or parts of elements forming an angle between them of between -15 and -15 degrees and between 75 and 105 degrees respectively.
- the geared motor 2 is formed by an electric motor 9 coupled to a reducer 10, the latter being chosen to be able to provide sufficient torque (greater than 220 Nm) and contain high radial loads (greater than 1000 kg) and this in order to ensure the continuous operation of the interceps 1 throughout an entire working day.
- the electric motor 9 is advantageously of the brushless motor type, conventionally called “brushless motor”, with low voltage and permanent magnets, this type of motor being recognized for its robustness, its compactness and its low maintenance requirement.
- the reducer 10 is advantageously of the wheel reducer type whose reduction ratio is between 1/35 and 1/50 in order to be able to obtain the desired torque at the shaft 3 of the geared motor 2.
- a person skilled in the art will have no difficulty in choosing the electric motor 9 and reducer 10 from among the models on the market, in particular to obtain the desired torque.
- the first angular sensor is an incremental encoder placed on the rear of the electric motor 9, that is to say on the side opposite the reducer 10, and makes it possible to obtain an incremental position of the position of its rotor relative to its stator and thus to obtain the positioning of the tool 6 in space. regardless of when the electric motor 9 is powered.
- the first angle sensor is integrated into the electric motor 9.
- the tool holder 5 comprises a plate 11 fixed to the free end of the shaft 3 of the geared motor 2 and comprising a housing 12 located on the side opposite said shaft 3 and receiving at least part of the probe 7.
- Said plate 11 is also provided with a support 13 extending vertically along the geared motor 2 and having a T-shaped cross section, said support 13 being associated with a plurality of screws, not shown, for fixing the tool 6 to the tool holder 5.
- the tool 6 is of the hoe type and comprises a substantially vertical prop 14 fixed by its upper end to the support 13 of the plate 11 of the tool holder 5 and receiving at its lower end a substantially horizontal blade 15, the latter being designed to work a few centimeters deep in the ground, so as to cut the roots of the weeds in place, which will then dry out.
- the tool 6 could be of a completely different type such as, for example, a digger, a starter or even a subsoiler, without departing from the scope of the present invention.
- the tool holder 5 pivots by means of the geared motor 2 between a "working" position in which the tool 6 is in a position to work the soil between two adjacent plants in the same row, and a "disengaged" position in which the tool 6 is no longer between two adjacent plants in the same row.
- said tool 6 in the working position extends substantially perpendicular to the direction of progression of the inter-row cultivator 1 according to the invention, said direction of progression, represented by an arrow F in FIGS. 4 to 12, corresponding to a direction substantially parallel to said row.
- the disengaged position the tool 6 extends almost parallel to the direction of progression of the inter-row cultivator 1 according to the invention and no longer threatens the plants with damage or destruction.
- the disengaged position is located between the work and rest positions and generally close to said rest position.
- these different positions being measured by the first angular sensor, if we define that the value 0 degrees corresponds to the work position, then the value 90 degrees will correspond to the rest position and the value corresponding to the disengaged position will be between 65 and 80 degrees.
- the rest and disengaged positions may be confused, without departing from the scope of the present invention.
- the rest position is advantageously materialized by a rear mechanical stop fixed to the outside of the geared motor 2 and on which the tool holder 5 and, where appropriate, its plate 11 abuts.
- the term “rear” refers to elements or parts of elements of the interceps 1 arranged at the rear of said interceps 1 according to the direction of movement of the latter.
- the interceps 1 also advantageously includes a lateral mechanical stop 16 fixed to the outside of the geared motor 2 and preventing the tool holder 5 and, where appropriate, its plate 11 from going beyond its working position on the side opposite its rest position in order to avoid any risk of damage or destruction of the plants.
- the interceps 1 also comprises a feeler 7 for detecting the presence of a plant and being associated with a second angular sensor 8 for determining the angular position of said feeler 7.
- the feeler 7 pivots between an "initial” position in which it is when no pressure is exerted on it, and a "limit” position corresponds to the maximum position of the feeler 7 beyond which the latter cannot avoid contact of the tool 6 with the plants and therefore a risk of damage or destruction of the latter.
- the angular measurement between the initial and limit positions of the feeler 7 measured by the second angular sensor 8 corresponds to a threshold value conventionally between 2 and 7 degrees for reasons of compactness of the interceps 1.
- the person skilled in the art will have no difficulty in determining said threshold value according to the shapes and dimensions of the tool 6 and feeler 7, but also their relative position.
- This start position is important because it makes it possible not to trigger the operation of the geared motor 2 in an untimely manner when the probe 7 comes into contact with obstacles of low mechanical resistance such as, for example, grass or flowers.
- the angular measurement between the initial and start positions of the probe 7 corresponds to a value between 0 and 2 degrees.
- the feeler 7 is associated with return means 17, advantageously of the helical traction spring type, to return it to its initial position, either when there is no longer any pressure exerted on said feeler 7 by a plant, or when there is pressure exerted on said feeler 7 by a plant and the tool holder 7 and the tool 9 pivot to release said plant.
- return means 17 has an impact on the reactivity of the interceps 1, but also on the maximum value of the mechanical resistance necessary for pivoting the feeler 7 to its starting position and therefore for triggering the operation of the geared motor 2.
- the second angular sensor 8 therefore measures a relative angular value, i.e. the angle traveled by said probe 7 relative to said tool holder 5.
- the second angular sensor 8 is advantageously of the Hall effect sensor type based on the magnetic field emitted by a magnet 18 fixed to the probe 7. Indeed, the magnet 18 will make it possible to induce an electric current in the winding of a sensor 19 fixed to the tool holder 5, the value of said current being a function of the angular position with said magnet 18.
- the Hall effect sensors make it possible to guarantee significant precision (of the order of a tenth of a degree) particularly suited to the use provided by the present invention.
- the second angular sensor 8 may be of a completely different type such as, for example, a potentiometric sensor, an incremental encoder or even an absolute encoder, without departing from the scope of the present invention.
- the interceps 1 comprises a current variator advantageously associated with an electronic control card for modulating the rotation speed of the shaft 3 of the geared motor 2.
- the current variator has an important function because it modulates the voltage of the supply current according to the response of the geared motor 2 and the instruction given to it by the electronic control card.
- the sizing of the current variator associated with the interceps 1 depends on numerous parameters such as, for example, the maximum voltage and intensity, or the usage time of the geared motor 2, but the person skilled in the art will be able to easily size the current variator to be implemented on the interceps 1 according to the invention.
- the electronic control board is configured to operate the interceps 1 according to the method for mechanical soil working described below.
- the invention also relates to a method for mechanically working the soil along and between the plants P of the same row using an inter-row cultivator 1 comprising at least one tool holder 5 receiving a tool 6 intended for working the soil and fixed to the free end of a shaft 3 of an electric geared motor 2 to pivot said tool 6 about a vertical axis 4 between a working position and a cleared position, and a feeler 7 arranged to detect the presence of a plant P, arranged above the ground and in front of the tool 6 in the direction of movement of the inter-row cultivator 1, pivotally mounted on said tool holder 5 about said axis 4 between an initial position and a limit position and associated with return means 17 tending to return it to its initial position.
- Said method comprises at least the following steps: a) positioning the tool 6 in the working position and the feeler 7 in the initial position and moving the inter-row 1 along a row of plants P, b) detecting a pivoting of the feeler 7 at least in the direction of its limit position (following contact with a plant P), c) verifying a pivoting of the feeler 7 at least to a starting position located between its initial and limit positions from which the geared motor 2 is powered, d) triggering the rotation of the shaft 3 of the geared motor 2 to pivot the tool 6 in the direction of its disengaged position so that the feeler 7 returns at least to its initial position thanks to the action of the return means 17, the rotation speed of the shaft 3 varying according to a cycle having an acceleration phase, a stabilization phase and a deceleration phase, e) if during step c) a return of the feeler 7 to a position beyond its initial position is detected, then triggering the rotation of the shaft 3 of the
- Step b) preferably consists of measuring the angular displacement of the probe 7 from its initial position.
- the term “at least in the direction of its limit position” denotes the fact that the probe 7 pivots in the direction of its limit position and that it can possibly but not necessarily go to its limit position
- the term “at least towards ... initial” means that the probe 7 pivots towards its initial position and that it can possibly but not necessarily go to its limit position or even beyond.
- a position beyond its initial position as an angular position of the probe 7, shown in a broken line and marked A in Figure 12, located after its initial position, shown in a continuous line and marked I in Figure 12, on the side opposite its limit position, shown in a mixed line and marked L in Figure 12.
- Figure 4 represents the state of the interceptor 1 described in step a), that is to say with the tool 6 in the working position and the probe 7 in the initial position.
- Figure 5 shows steps b) and c) with the probe 7 pivoted towards its limit position following contact with a plant; this figure shows the probe 7 in its limit position determined by the angle A between its initial position and its limit position.
- Figure 6 shows step d) with the tool 6 pivoted towards its released position so that the probe 7 returns at least to its initial position, this figure shows the probe 7 returned to its initial position and the pivoting of the tool 6 determined by the angle Bi.
- Figure 7 shows the start of step f) with the tool 6 in its released position and the probe 7 in its initial position.
- Figure 8 shows the end of step f) with the tool 6 in its released position and the probe 7 pivoting at least in the direction of its limit position, this figure shows the probe 7 in its limit position determined by the angle A between its initial position and its limit position.
- Figure 9 shows step g) with the probe 7 pivoting to its initial position in the absence of a plant.
- Figure 10 shows the start of step h) with the tool 6 returning towards its working position to work the soil between the plants P, and the feeler 7 in its initial position.
- Figure 11 shows the end of step h) with the tool 6 in its cleared working position and the sensor 7 in its initial position, the work of the soil between the plants P continuing until the detection of a next plant P.
- the feeler 7 since the feeler 7 has by default the optimal movement relative to the plants, it is therefore necessary to keep in the case of a tool 6 of the hoe type, the blade 15 of the tool 6 always substantially parallel to the feeler 7, that is to say to keep the feeler 7 always between its initial and limit positions of said feeler 7.
- the rotation of the shaft 3 of the geared motor 2 to pivot the tool 6 towards its released position will be all the faster as the value of the pivoting of said probe 7 is significant, that is to say that the acceleration will be significant and therefore the deceleration will also be significant subsequently
- the rotation of the shaft 3 of the geared motor 2 to pivot the tool 6 towards its released position will be all the slower as the value of the pivoting of said probe 7 is low, that is to say that the acceleration will then be less significant and therefore the deceleration will also be less significant subsequently.
- the rotation speed of the shaft 3 therefore varies according to a cycle whose different acceleration, stabilization and deceleration phases are a function of the value of the pivoting of the probe 7.
- the value of the pivoting of the probe 7 is here determined by the angle measured between its initial position and the position of said probe 7 once pivoted.
- step a) is preceded by a step of initializing the interceps 1 consisting of placing the tool 6 in its working position when the geared motor 2 is powered up.
- the geared motor 2 will slowly pivot the tool holder 5 and tool 6 assembly until said tool holder 5 comes into contact with the rear mechanical stop fixed to the outside of the geared motor 2 and determining the rest position of the tool holder 5 and tool 6 assembly, then the geared motor 2 will slowly pivot the tool holder 5 and tool 6 assembly in the opposite direction to bring it to its working position using the first angular sensor and the electronic control card.
- step h) if during step h) a pivoting of the probe 7 at least in the direction of its limit position is detected, then a rotation of the shaft 3 of the geared motor 2 is triggered to pivot the tool 6 in the direction of its released position in order to return the probe 7 to its initial position.
- the method comprises, after step h), a clearing step consisting of positioning the tool 6 in its working position and triggering an alternating rotation of the geared motor 2 so that the tool 6 oscillates in order to cause the earth present on said tool 6 to fall.
- the method comprises after step h) a transport step consisting in positioning the tool 6 in a work-rest position located beyond its released position in which the tool 6 is in a situation allowing the safe movement of the inter-row cultivator 1 outside the row crop field. More precisely, in the case of a tool 6 of the hoe type, said tool 6 in the rest position extends substantially parallel to the direction of progression of the inter-row cultivator 1.
- the method and the interceps 1 according to the invention find a particular application for working the soil between the vines of a vineyard.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
- Soil Working Implements (AREA)
- Sowing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2302014 | 2023-03-03 | ||
| FR2302014A FR3146257B1 (fr) | 2023-03-03 | 2023-03-03 | Procede et dispositif pour le travail mecanique du sol entre les plants d'une meme rangee |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024184168A1 true WO2024184168A1 (fr) | 2024-09-12 |
Family
ID=86657662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/055183 Pending WO2024184168A1 (fr) | 2023-03-03 | 2024-02-29 | Procede et dispositif pour le travail mecanique du sol entre les plants d'une meme rangee |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3146257B1 (fr) |
| WO (1) | WO2024184168A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2964006A1 (fr) | 2010-08-30 | 2012-03-02 | Romain Laganier | Dispositif de traitement agricole d'une culture sur sol de plants en rangees |
| FR3093273A1 (fr) | 2019-02-28 | 2020-09-04 | Vitibot | Outils pour le travail du sol entre les ceps |
| CN114009161A (zh) | 2021-11-11 | 2022-02-08 | 铁牛云智(深圳)科技有限公司 | 一种株间除草机 |
| FR3124349A1 (fr) | 2021-06-23 | 2022-12-30 | Sabi Agri | Dispositif d’actionnement intermittent pour outil agricole |
-
2023
- 2023-03-03 FR FR2302014A patent/FR3146257B1/fr active Active
-
2024
- 2024-02-29 WO PCT/EP2024/055183 patent/WO2024184168A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2964006A1 (fr) | 2010-08-30 | 2012-03-02 | Romain Laganier | Dispositif de traitement agricole d'une culture sur sol de plants en rangees |
| FR3093273A1 (fr) | 2019-02-28 | 2020-09-04 | Vitibot | Outils pour le travail du sol entre les ceps |
| FR3124349A1 (fr) | 2021-06-23 | 2022-12-30 | Sabi Agri | Dispositif d’actionnement intermittent pour outil agricole |
| CN114009161A (zh) | 2021-11-11 | 2022-02-08 | 铁牛云智(深圳)科技有限公司 | 一种株间除草机 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3146257A1 (fr) | 2024-09-06 |
| FR3146257B1 (fr) | 2025-03-07 |
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