US20190321845A1 - Control system, spray bar, carrier and method of implementation - Google Patents
Control system, spray bar, carrier and method of implementation Download PDFInfo
- Publication number
- US20190321845A1 US20190321845A1 US16/459,178 US201916459178A US2019321845A1 US 20190321845 A1 US20190321845 A1 US 20190321845A1 US 201916459178 A US201916459178 A US 201916459178A US 2019321845 A1 US2019321845 A1 US 2019321845A1
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- US
- United States
- Prior art keywords
- accumulator
- distributor
- spray bar
- actuator
- control system
- 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.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
- B05B12/124—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to distance between spray apparatus and target
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- 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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
- A01M7/0053—Mounting of the spraybooms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
- A01M7/0053—Mounting of the spraybooms
- A01M7/0057—Mounting of the spraybooms with active regulation of the boom position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/005—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 mounted on vehicles or designed to apply a liquid on a very large surface, e.g. on the road, on the surface of large containers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/008—Tanks, chassis or related parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/066—Variable stiffness
Definitions
- the present invention relates to a control system, provided to equip a spray bar mounted on a carrier and having an adjustable angle relative to the carrier and the ground.
- the invention also relates to a spray bar equipped with such a control system, a carrier equipped with such a spray bar, and a method for implementing such a control system.
- the invention relates to the field of agricultural spray bars.
- US-A-2014 196 996 describes an example control system of a spray bar.
- the control system comprises a tilt cylinder including two chambers separated by a piston.
- the control system also comprises a damping device, including two accumulators respectively connected to the two chambers of the cylinder. Each accumulator makes it possible to damp the pressure variations in the corresponding chamber.
- the aim of the present invention is to propose an improved control system for a spray bar.
- the invention relates to a control system, provided to equip a spray bar mounted on a carrier and having an adjustable angle relative to the carrier and the ground, the control system comprising an actuator for changing the angle of the spray bar; a control device for controlling the actuator; a damping device connected to the actuator to damp vibrations and oscillations of the spray bar and thus stabilize the angle; and a recharging device operating simultaneously with the control device to compensate for a pressure change in the damping device during a change in the angle of the spray bar.
- the invention makes it possible to adjust the incline of the bar relative to the ground, damp the irregularities of the terrain and recharge the damping device each time the angle of the bar changes. In practice, this modification results from actuation of a tilt correction function.
- the invention also relates to a spray bar, suitable for being mounted on a carrier and having an adjustable angle, wherein the spray bar is equipped with a control system as described above.
- the invention also relates to a carrier, for example a vehicle or an agricultural trailer, equipped with a spray bar as described above.
- the carrier may be self-propelled, carried or dragged.
- the invention also relates to a method for implementing a control system as described above.
- the method comprises a tilting step for modifying the angle of the spray bar, wherein in the tilting step, the control device controls the actuator while the recharging device compensates for a pressure variation in the damping device. In this step, which results from the actuation of the tilt correction function, the recharging is done automatically and simultaneously with the control.
- FIG. 1 is a rear view of a carrier according to the invention, of the agricultural vehicle type, equipped with a spray bar and a control system also according to the invention.
- FIG. 2 is a view similar to FIG. 1 , showing the spray bar inclined relative to the vehicle and the ground, while the vehicle has one wheel in a rut;
- FIG. 3 is an enlarged partial rear view of the spray bar of FIGS. 1 and 2 ;
- FIG. 4 is an enlarged partial rear view of the spray bar of FIGS. 1 and 2 ;
- FIG. 5 is a rear view similar to FIG. 3 , still more partial and on an even larger scale, of the spray bar and the control system;
- FIG. 6 is a front view similar to FIG. 5 ;
- FIG. 7 is a hydraulic diagram of the control system of FIGS. 1 to 6 ;
- FIG. 8 is a diagram similar to FIG. 7 , during the incline of the spray bar on a first side;
- FIG. 9 is a diagram similar to FIG. 7 , during the incline of the spray bar on a second side.
- FIG. 10 is a diagram similar to FIG. 7 , during the damping of the vibrations experienced by the bar.
- FIGS. 1 and 2 show a carrier according to the invention, of the agricultural vehicle type 1.
- the carrier can be of any other type suitable for the targeted application.
- the vehicle 1 comprises a chassis 2 and wheels 3 rotatable relative to the chassis 2 .
- the wheels 3 are shown resting on the ground S, which is regular in FIG. 1 and includes a rut S′ in FIG. 2 .
- the vehicle 1 is equipped with a spray bar 10 , also according to the invention.
- a spray bar 10 also according to the invention.
- the spray bar 10 and its component elements are partially shown in FIGS. 1 to 6 .
- the bar 10 extends along a horizontal direction between a left side 11 and a right side 12 .
- the orientation of the sides 11 and 12 is defined relative to the direction of advance of the vehicle 1 .
- the bar 10 comprises a stationary support 13 , a moving carriage 14 , an articulation 15 , an inclinable part 16 and two spray arms 17 and 18 .
- the support 13 is fastened to the chassis 2 of the vehicle 1 .
- the carriage 14 is mounted slidingly connected on the support 13 .
- the carriage 14 is movable along a vertical direction relative to the support 13 , to lower or raise the arms 17 and 18 .
- the inclinable part 16 is rotatable relative to the carriage 14 at the articulation 15 , which defines a pivot axis A 10 parallel to the longitudinal direction of the vehicle 1 .
- the arms 17 and 18 extend on either side of the inclinable part 16 , respectively on the sides 11 and 12 of the bar 10 .
- the arms 17 and 18 are equipped with spraying devices, which are not the subject matter of the present invention.
- the size of the bar 10 measured between the ends of the arms 17 and 18 on the sides 11 and 12 , is for example about 12 to 54 meters.
- the bar 10 is positioned horizontally, with its arms 17 and 18 positioned parallel to the ground.
- the arms 17 and 18 can also be positioned vertically, or can be inclined with any possible orientation.
- the bar 10 has an angle ⁇ 10 adjustable relative to the vehicle 1 .
- the angle ⁇ 10 is embodied by an angle defined around the pivot axis A 10 , between a horizontal reference plane P 14 associated with the carriage 14 and an inclinable plane P 16 associated with the inclinable part 16 and the arms 17 and 18 , as shown in FIG. 2 .
- the arm 17 is raised on the left side 11
- the arm 18 is lowered on the right side 12 , to place the arms 17 and 18 parallel to the ground S.
- the bar 10 is equipped with a hydraulic control system 20 , designed in particular to adjust the angle ⁇ 10 .
- the modification of the angle ⁇ 10 results from the manual actuation of a tilt correction function by the operator, directly from his cabin.
- the modification of the angle ⁇ 10 may result from the automatic actuation of the tilt correction function, by a control unit, not shown.
- the system 20 comprises a tilt cylinder 30 , a control device 40 , a damping device 60 and a recharging device 70 .
- the cylinder 30 makes it possible to modify the angle ⁇ 10 of the bar 10 , in other words to adjust the angle between the planes P 14 and P 16 , through mechanical action of the rod 33 on the inclinable part 16 .
- the device 40 makes it possible to control the cylinder 30 to incline the bar 10 .
- the damping device 60 makes it possible to damp the vibrations and oscillations of the bar 10 when the vehicle 1 travels over irregular ground S, and thus to stabilize the angle ⁇ 10 .
- the recharging device 70 activated simultaneously with the control device 40 , makes it possible to compensate for a pressure change in the damping device 60 during a change in the angle ⁇ 10 of the bar 10 .
- the system 20 also performs other functions, not directly related to the subject matter of the present invention, but some of which are mentioned below.
- the system 20 comprises other devices, among which only the device 80 is shown for simplification reasons. These devices 80 and others can be controlled by the control device 40 .
- the device 80 comprises an all-or-nothing distributor 81 , a cylinder 82 and an accumulator 83 .
- the device 80 makes it possible to move the carriage 14 relative to the support 13 by action of the cylinder 82 .
- the other devices, not shown, in particular make it possible to unfold and refold the component parts of the arms 17 and 18 , and to lock said component parts in position.
- the cylinder 30 is a through rod double-acting cylinder 33 , also called dual rod.
- the cylinder 30 comprises a body 31 , a piston 32 mounted translatably in the body 31 , and the rod 33 secured to the piston 32 .
- the rod 33 extends on either side of the piston 32 , traverses the body 31 and exits at the ends of the body 31 .
- the body 31 includes an extension 34 articulated on a platen 19 secured to the inclinable part 16 .
- the rod 33 has one end 35 articulated on the carriage 14 and one free end 36 .
- Two chambers 37 and 38 are defined in the body 31 , on either side of the piston 32 .
- the chambers 37 and 38 can be supplied with pressurized fluid via couplings 370 and 380 , respectively, shown on the body 31 .
- the pressure in the cylinder 30 depends on the size of the bar 10 .
- the control device 40 generates hydraulic energy making it possible to operate the system 20 , in particular the cylinder 30 .
- the device 40 comprises a pump 41 , a reservoir 42 , an input block 43 and a functional block 44 .
- the reservoir 42 forms a fluid source within the system 20 .
- the input block 43 includes an all-or-nothing distributor 45 , provided to allow or prohibit the circulation of fluid between the pump 41 , the reservoir 42 and the functional block 44 .
- the functional block 44 includes various distributors associated with the functions of the system 20 , including an inverter distributor 46 , two all-or-nothing distributors 51 and 52 , the distributor 81 connected to the cylinder 82 , as well as other distributors associated with devices not shown equipping the system 20 .
- the device 40 also comprises two unidirectional flow limiters 57 and 58 , inserted between the functional block 44 and the cylinder 30 . More specifically, the limiter 57 is inserted between the distributor 51 and the coupling 370 , while the limiter 58 is inserted between the distributor 52 and the coupling 380 .
- the damping device 60 comprises two accumulators 61 and 62 , two all-or-nothing distributors 63 and 64 , two check valves 65 and 66 , and two two-way valves 67 and 68 .
- the elements 61 , 63 , 65 and 67 are positioned on the left side 11 , between the limiter 57 , the coupling 370 and the system 70 .
- the elements 62 , 64 , 66 and 68 are positioned on the right side 12 , between the limiter 58 , the coupling 380 and the system 70 .
- Each accumulator 61 and 62 is in communication with one of the chambers 37 or 38 , respectively, of the cylinder 30 .
- Each accumulator 61 and 62 for example assumes the form of a nitrogen ball, forming a hydraulic damper.
- each all-or-nothing distributor 63 and 64 includes a closed distributor portion 601 and an open distributor portion 602 .
- the damper may or may not be activated, depending on the position 601 or 602 of the distributors 63 and 64 .
- the damping is inactive in position 601 and active with a hardness unable to be altered by the operator in position 602 .
- the distributors 63 and 64 can be proportional distributors.
- the fluid circulation flow rate between each of the accumulators 61 and 62 and the corresponding chamber 37 or 38 of the cylinder 30 can be modified by the action of the two proportional distributors 63 and 64 , which makes it possible to modify the hardness of the damper.
- the operator of the bar 10 can adjust the hardness of the damper as desired, for example as a function of the nature of the terrain, through manual controls.
- this command can be actuated in different ways and situated in different locations of the machine. In practice, the operator simultaneously modifies the position of each of the distributors 63 and 64 until obtaining the desired damping hardness.
- the recharging device 70 comprises a distributor 71 , including a non-return position 72 and a circulation position 73 .
- the device 70 also comprises a direct-action adjustable pressure limiter 74 and a check valve 75 , positioned in parallel relative to one another, and positioned in series relative to the distributor 71 .
- the device 70 is positioned downstream from the device 60 , relative to the actuator 30 . If one of the accumulators 61 or 62 is at a different pressure from the other, the device 70 makes it possible to recharge this accumulator 61 or 62 , so as to have a same pressure in the two accumulators 61 and 62 during a damping step.
- FIG. 7 shows the system 20 when idle.
- the distributors 45 , 51 and 52 are in the cut position.
- the distributor 71 is in the non-return position 72 .
- the fluid does not circulate within the system 20 .
- FIGS. 8 and 9 show the system 20 during a tilting step, i.e., a step for changing the angle ⁇ 10 of the bar 10 .
- the distributors 45 , 51 and 52 are in the circulation position.
- the distributor 71 is also in the circulation position 73 , to allow the recharging device 70 to perform its function.
- the tilting step is triggered manually by the operator from his cabin.
- the operator can gradually modify the angle ⁇ 10 until reaching a desired angle value ⁇ 10 .
- the angle value ⁇ 10 is adjusted automatically by a complementary device provided to that end, which is not the subject matter of the present invention.
- this accumulator 61 or 62 is recharged by the recharging device 70 , so as to have a pressure equilibrium in the two accumulators 61 and 62 at the end of actuation of the tilting function. Without this recharging, a pressure imbalance would appear between the two accumulators 61 and 62 , respectively associated with the chambers 37 and 38 of the cylinder 30 . The damping would then no longer be satisfactory and, in some cases, could cause an uncontrolled movement of the cylinder 30 , and consequently of the arms 17 and 18 .
- the distributor 46 is in the circulation position 47 .
- the pump 41 causes fluid to circulate, on the one hand, toward the recharging device 70 , then the damping device 60 , and on the other hand, toward the chamber 37 of the cylinder 30 , while traversing the distributor 46 , the distributor 51 , the limiter 57 and the coupling 370 .
- the chamber 37 experiences an overpressure relative to the chamber 38 , such that the rod 33 is moved on the right side 12 .
- Fluid contained in the chamber 38 escapes through the coupling 380 , then traverses the limiter 58 , the distributor 52 , the distributor 46 , to the reservoir 42 .
- the angle ⁇ 10 of the bar 10 is modified, before raising of the left arm 17 and lowering of the right arm 18 .
- the distributor 46 is in the circulation position 48 .
- the pump 41 causes fluid to circulate, on the one hand, toward the recharging device 70 , then the damping device 60 , and on the other hand, toward the chamber 38 of the cylinder 30 , while traversing the distributor 46 , the distributor 52 , the limiter 58 and the coupling 380 .
- the chamber 38 experiences an overpressure relative to the chamber 37 , such that the rod 33 is moved on the left side 11 . Fluid contained in the chamber 37 escapes through the coupling 370 , then traverses the limiter 57 , the distributor 51 , the distributor 46 , to the reservoir 42 .
- the angle ⁇ 10 of the bar 10 is modified, before lowering of the left arm 17 and raising of the right arm 18 .
- FIG. 10 shows the system 20 during a damping step, when the bar 10 is in use, with a given angle ⁇ 10 .
- the distributors 51 and 52 are then in the cut position.
- the distributor 71 is in the non-return position 72 , also corresponding to a cut position.
- the distributors 63 and 64 are in the circulation position 602 .
- the damping step is triggered automatically, with no intervention by the operator, based on the vibrations and oscillations affecting the bar 10 .
- the damping makes it possible to keep the incline ⁇ 10 in a range having an amplitude depending on the size of the bar 10 .
- this range may be ⁇ 5° relative to the value defined during the tilting step.
- the recharging makes it possible to achieve a pressure equilibrium within the damping device 60 . Without this recharging, a pressure imbalance would be maintained between the two accumulators 61 and 62 after the damping step, such that subsequent damping would no longer be satisfactory and, in some cases, could cause an uncontrolled movement of the cylinder 30 , and consequently of the arms 17 and 18 .
- vehicle 1 the spray bar 10 and/or the control system 20 can be configured differently from FIGS. 1 to 10 without going beyond the scope of the invention.
- the actuator 30 can be configured differently from a through rod double-acting cylinder.
- the actuator 30 can be formed by two single-acting cylinders having a same cross-section and mounted in opposition.
- control device 40 can be configured differently than in the figures.
- control system 20 can be adapted in terms of cost, functionality and performance.
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Abstract
The present invention relates to a control system (20) provided to a spray bar (10) mounted on a carrier (1) at an angle (α10) adjustable relative to the carrier (1), the control system (20) comprising an actuator for changing the angle (α10) of the spray bar (10); a control device for controlling the actuator; and a damping device connected to the actuator to damp vibrations and oscillations of the spray bar (10) and thus stabilize the angle (α10). The invention is characterized in that the control system (20) further comprises a recharging device operating simultaneously with the control device to compensate for a pressure change in the damping device during a change in the angle (a 10) of the spray bar (10). The invention also relates to a spray bar (10), a carrier (1) and a method of implementation.
Description
- The present application is a continuation of U.S. patent application Ser. No. 15/550,695, filed Aug. 11, 2017, which claims priority to international patent application number PCT/FR2015/050386, filed Feb. 17, 2015, the entireties of which are incorporated herein by reference.
- The present invention relates to a control system, provided to equip a spray bar mounted on a carrier and having an adjustable angle relative to the carrier and the ground. The invention also relates to a spray bar equipped with such a control system, a carrier equipped with such a spray bar, and a method for implementing such a control system. The invention relates to the field of agricultural spray bars.
- When an agricultural vehicle equipped with a spray bar is called upon to work on irregular ground, for example comprising ruts, it is known to use a tilt bar to reposition the bar parallel to the ground. Furthermore, it is known to associate a shock absorbing device with the cylinder to lessen the oscillations of the bar due to the irregularities of the ground.
- US-A-2014 196 996 describes an example control system of a spray bar. The control system comprises a tilt cylinder including two chambers separated by a piston. The control system also comprises a damping device, including two accumulators respectively connected to the two chambers of the cylinder. Each accumulator makes it possible to damp the pressure variations in the corresponding chamber.
- The aim of the present invention is to propose an improved control system for a spray bar.
- To that end, the invention relates to a control system, provided to equip a spray bar mounted on a carrier and having an adjustable angle relative to the carrier and the ground, the control system comprising an actuator for changing the angle of the spray bar; a control device for controlling the actuator; a damping device connected to the actuator to damp vibrations and oscillations of the spray bar and thus stabilize the angle; and a recharging device operating simultaneously with the control device to compensate for a pressure change in the damping device during a change in the angle of the spray bar.
- Thus, the invention makes it possible to adjust the incline of the bar relative to the ground, damp the irregularities of the terrain and recharge the damping device each time the angle of the bar changes. In practice, this modification results from actuation of a tilt correction function.
- According to other advantageous features of the invention, considered alone or in combination:
-
- The modification of the angle of the spray bar results from a by operator manual actuation for a tilt correction function.
- The modification of the angle of the spray bar results from an automatic actuation for a tilt correction function.
- The recharging device comprises a distributor including a non-return position and a circulation position.
- The recharging device also comprises a direct-action adjustable pressure limiter and a check valve, positioned in parallel relative to one another, and positioned in series relative to the distributor.
- The recharging device is positioned downstream from the damping device, relative to the actuator.
- The actuator is a through rod double-acting cylinder comprising a hollow body, a piston moving in the hollow body, a rod secured to the piston and extending on each side of the body, and two chambers separated by the piston in the body.
- The actuator is formed by two single-acting cylinders mounted in opposition and having a same cross-section.
- The damping device comprises two accumulators, each rechargeable by the recharging device in case of underpressure relative to the other accumulator.
- The damping device comprises two all-or-nothing distributors, so as to activate or deactivate the damping.
- The damping device comprises two proportional distributors, so as to adjust the damping hardness.
- The invention also relates to a spray bar, suitable for being mounted on a carrier and having an adjustable angle, wherein the spray bar is equipped with a control system as described above.
- The invention also relates to a carrier, for example a vehicle or an agricultural trailer, equipped with a spray bar as described above. The carrier may be self-propelled, carried or dragged.
- The invention also relates to a method for implementing a control system as described above. The method comprises a tilting step for modifying the angle of the spray bar, wherein in the tilting step, the control device controls the actuator while the recharging device compensates for a pressure variation in the damping device. In this step, which results from the actuation of the tilt correction function, the recharging is done automatically and simultaneously with the control.
- The invention will be better understood upon reading the following description, provided solely as a non-limiting example and done in reference to the appended drawings, in which:
-
FIG. 1 is a rear view of a carrier according to the invention, of the agricultural vehicle type, equipped with a spray bar and a control system also according to the invention. -
FIG. 2 is a view similar toFIG. 1 , showing the spray bar inclined relative to the vehicle and the ground, while the vehicle has one wheel in a rut; -
FIG. 3 is an enlarged partial rear view of the spray bar ofFIGS. 1 and 2 ; -
FIG. 4 is an enlarged partial rear view of the spray bar ofFIGS. 1 and 2 ; -
FIG. 5 is a rear view similar toFIG. 3 , still more partial and on an even larger scale, of the spray bar and the control system; -
FIG. 6 is a front view similar toFIG. 5 ; -
FIG. 7 is a hydraulic diagram of the control system ofFIGS. 1 to 6 ; -
FIG. 8 is a diagram similar toFIG. 7 , during the incline of the spray bar on a first side; -
FIG. 9 is a diagram similar toFIG. 7 , during the incline of the spray bar on a second side; and -
FIG. 10 is a diagram similar toFIG. 7 , during the damping of the vibrations experienced by the bar. -
FIGS. 1 and 2 show a carrier according to the invention, of the agricultural vehicle type 1. Alternatively, the carrier can be of any other type suitable for the targeted application. The vehicle 1 comprises achassis 2 andwheels 3 rotatable relative to thechassis 2. Thewheels 3 are shown resting on the ground S, which is regular inFIG. 1 and includes a rut S′ inFIG. 2 . - The vehicle 1 is equipped with a
spray bar 10, also according to the invention. For simplification reasons, thespray bar 10 and its component elements are partially shown inFIGS. 1 to 6 . - The
bar 10 extends along a horizontal direction between aleft side 11 and aright side 12. The orientation of thesides bar 10 comprises astationary support 13, a movingcarriage 14, anarticulation 15, aninclinable part 16 and twospray arms support 13 is fastened to thechassis 2 of the vehicle 1. Thecarriage 14 is mounted slidingly connected on thesupport 13. Thecarriage 14 is movable along a vertical direction relative to thesupport 13, to lower or raise thearms inclinable part 16 is rotatable relative to thecarriage 14 at thearticulation 15, which defines a pivot axis A10 parallel to the longitudinal direction of the vehicle 1. Thearms inclinable part 16, respectively on thesides bar 10. Thearms bar 10, measured between the ends of thearms sides - In the example of the figures, the
bar 10 is positioned horizontally, with itsarms arms - The
bar 10 has an angle α10 adjustable relative to the vehicle 1. The angle α10 is embodied by an angle defined around the pivot axis A10, between a horizontal reference plane P14 associated with thecarriage 14 and an inclinable plane P16 associated with theinclinable part 16 and thearms FIG. 2 . In the example ofFIG. 2 , thearm 17 is raised on theleft side 11, while thearm 18 is lowered on theright side 12, to place thearms - The
bar 10 is equipped with ahydraulic control system 20, designed in particular to adjust the angle α10. Preferably in the context of the invention, the modification of the angle α10 results from the manual actuation of a tilt correction function by the operator, directly from his cabin. According to one alternative embodiment, the modification of the angle α10 may result from the automatic actuation of the tilt correction function, by a control unit, not shown. - The
system 20 comprises atilt cylinder 30, acontrol device 40, a dampingdevice 60 and arecharging device 70. Thecylinder 30 makes it possible to modify the angle α10 of thebar 10, in other words to adjust the angle between the planes P14 and P16, through mechanical action of therod 33 on theinclinable part 16. Thedevice 40 makes it possible to control thecylinder 30 to incline thebar 10. The dampingdevice 60 makes it possible to damp the vibrations and oscillations of thebar 10 when the vehicle 1 travels over irregular ground S, and thus to stabilize the angle α10. Therecharging device 70, activated simultaneously with thecontrol device 40, makes it possible to compensate for a pressure change in the dampingdevice 60 during a change in the angle α10 of thebar 10. - The
system 20 also performs other functions, not directly related to the subject matter of the present invention, but some of which are mentioned below. To that end, thesystem 20 comprises other devices, among which only thedevice 80 is shown for simplification reasons. Thesedevices 80 and others can be controlled by thecontrol device 40. Thedevice 80 comprises an all-or-nothing distributor 81, acylinder 82 and anaccumulator 83. Thedevice 80 makes it possible to move thecarriage 14 relative to thesupport 13 by action of thecylinder 82. The other devices, not shown, in particular make it possible to unfold and refold the component parts of thearms - In the non-limiting example of
FIGS. 1 to 10 , thecylinder 30 is a through rod double-actingcylinder 33, also called dual rod. Thecylinder 30 comprises abody 31, apiston 32 mounted translatably in thebody 31, and therod 33 secured to thepiston 32. Therod 33 extends on either side of thepiston 32, traverses thebody 31 and exits at the ends of thebody 31. Thebody 31 includes anextension 34 articulated on aplaten 19 secured to theinclinable part 16. Therod 33 has oneend 35 articulated on thecarriage 14 and onefree end 36. Twochambers body 31, on either side of thepiston 32. Thechambers couplings body 31. The pressure in thecylinder 30 depends on the size of thebar 10. - In case of overpressure in the
left chamber 37 relative to theright chamber 38, thepiston 32 and therod 33 are pushed back on theright side 12. Theend 35 of therod 33 moves the movingpart 16 and causes the angle α10 to vary, such that theleft arm 17 is raised while theright arm 18 is lowered. - In case of overpressure in the
right chamber 38 relative to theleft chamber 37, thepiston 32 and therod 33 are pushed back on theleft side 11. Theend 35 of therod 33 moves the movingpart 16 and causes the angle α10 to vary, such that theleft arm 17 is lowered while theright arm 18 is raised. - The
control device 40 generates hydraulic energy making it possible to operate thesystem 20, in particular thecylinder 30. Thedevice 40 comprises apump 41, areservoir 42, aninput block 43 and afunctional block 44. Thereservoir 42 forms a fluid source within thesystem 20. Theinput block 43 includes an all-or-nothing distributor 45, provided to allow or prohibit the circulation of fluid between thepump 41, thereservoir 42 and thefunctional block 44. Thefunctional block 44 includes various distributors associated with the functions of thesystem 20, including aninverter distributor 46, two all-or-nothing distributors distributor 81 connected to thecylinder 82, as well as other distributors associated with devices not shown equipping thesystem 20. - The
device 40 also comprises twounidirectional flow limiters functional block 44 and thecylinder 30. More specifically, thelimiter 57 is inserted between thedistributor 51 and thecoupling 370, while thelimiter 58 is inserted between thedistributor 52 and thecoupling 380. - The damping
device 60 comprises twoaccumulators nothing distributors check valves way valves elements left side 11, between thelimiter 57, thecoupling 370 and thesystem 70. Theelements right side 12, between thelimiter 58, thecoupling 380 and thesystem 70. Eachaccumulator chambers cylinder 30. Eachaccumulator - In the example of the figures, each all-or-
nothing distributor closed distributor portion 601 and anopen distributor portion 602. The damper may or may not be activated, depending on theposition distributors position 601 and active with a hardness unable to be altered by the operator inposition 602. - According to one alternative not shown, the
distributors accumulators corresponding chamber cylinder 30 can be modified by the action of the twoproportional distributors bar 10 can adjust the hardness of the damper as desired, for example as a function of the nature of the terrain, through manual controls. According to alternatives that are not shown, this command can be actuated in different ways and situated in different locations of the machine. In practice, the operator simultaneously modifies the position of each of thedistributors - The
recharging device 70 comprises adistributor 71, including anon-return position 72 and acirculation position 73. Thedevice 70 also comprises a direct-actionadjustable pressure limiter 74 and acheck valve 75, positioned in parallel relative to one another, and positioned in series relative to thedistributor 71. Thedevice 70 is positioned downstream from thedevice 60, relative to theactuator 30. If one of theaccumulators device 70 makes it possible to recharge thisaccumulator accumulators - The operation of the
control system 20 is outlined below in reference toFIGS. 7 to 10 .FIG. 7 shows thesystem 20 when idle. Thedistributors distributor 71 is in thenon-return position 72. The fluid does not circulate within thesystem 20. -
FIGS. 8 and 9 show thesystem 20 during a tilting step, i.e., a step for changing the angle α10 of thebar 10. Thedistributors distributor 71 is also in thecirculation position 73, to allow therecharging device 70 to perform its function. In practice, the tilting step is triggered manually by the operator from his cabin. According to a first embodiment, the operator can gradually modify the angle α10 until reaching a desired angle value α10. According to a second embodiment, the angle value α10 is adjusted automatically by a complementary device provided to that end, which is not the subject matter of the present invention. - During this tilting step, if one of the
accumulators accumulator recharging device 70, so as to have a pressure equilibrium in the twoaccumulators accumulators chambers cylinder 30. The damping would then no longer be satisfactory and, in some cases, could cause an uncontrolled movement of thecylinder 30, and consequently of thearms - In
FIG. 8 , thedistributor 46 is in thecirculation position 47. Thepump 41 causes fluid to circulate, on the one hand, toward therecharging device 70, then the dampingdevice 60, and on the other hand, toward thechamber 37 of thecylinder 30, while traversing thedistributor 46, thedistributor 51, thelimiter 57 and thecoupling 370. Thechamber 37 experiences an overpressure relative to thechamber 38, such that therod 33 is moved on theright side 12. Fluid contained in thechamber 38 escapes through thecoupling 380, then traverses thelimiter 58, thedistributor 52, thedistributor 46, to thereservoir 42. The angle α10 of thebar 10 is modified, before raising of theleft arm 17 and lowering of theright arm 18. - In
FIG. 9 , thedistributor 46 is in thecirculation position 48. Thepump 41 causes fluid to circulate, on the one hand, toward therecharging device 70, then the dampingdevice 60, and on the other hand, toward thechamber 38 of thecylinder 30, while traversing thedistributor 46, thedistributor 52, thelimiter 58 and thecoupling 380. Thechamber 38 experiences an overpressure relative to thechamber 37, such that therod 33 is moved on theleft side 11. Fluid contained in thechamber 37 escapes through thecoupling 370, then traverses thelimiter 57, thedistributor 51, thedistributor 46, to thereservoir 42. The angle α10 of thebar 10 is modified, before lowering of theleft arm 17 and raising of theright arm 18. -
FIG. 10 shows thesystem 20 during a damping step, when thebar 10 is in use, with a given angle α10. Thedistributors distributor 71 is in thenon-return position 72, also corresponding to a cut position. Thedistributors circulation position 602. - While the tilting step is triggered manually by the operator, the damping step is triggered automatically, with no intervention by the operator, based on the vibrations and oscillations affecting the
bar 10. In practice, the damping makes it possible to keep the incline α10 in a range having an amplitude depending on the size of thebar 10. As a non-limiting example, this range may be ±5° relative to the value defined during the tilting step. - In the simplified example of
FIG. 10 , mechanical stresses are exerted on thebar 10, tending to move therod 33 toward theright side 12. Thechamber 37 experiences an under pressure relative to thechamber 38. In response, fluid circulates from theaccumulator 61 toward thechamber 37, while fluid circulates from thechamber 38 toward theaccumulator 62, thus producing the damping of the movement of thearms - During a subsequent tilting step, the recharging makes it possible to achieve a pressure equilibrium within the damping
device 60. Without this recharging, a pressure imbalance would be maintained between the twoaccumulators cylinder 30, and consequently of thearms - Furthermore, the vehicle 1, the
spray bar 10 and/or thecontrol system 20 can be configured differently fromFIGS. 1 to 10 without going beyond the scope of the invention. - In an alternative that is not shown, the
actuator 30 can be configured differently from a through rod double-acting cylinder. For example, theactuator 30 can be formed by two single-acting cylinders having a same cross-section and mounted in opposition. - According to another alternative that is not shown, the
control device 40 can be configured differently than in the figures. - Furthermore, the technical features of the different embodiments and alternatives mentioned above can be combined with one another in whole or in part. Thus, the
control system 20 can be adapted in terms of cost, functionality and performance.
Claims (20)
1. A hydraulic control system configured to control an angle of an inclinable part of a spray bar mounted on a carrier, the control system comprising:
an actuator configured to change the angle of the inclinable part of the spray bar;
a pump in fluid communication with a reservoir, the pump configured to control the actuator using fluid stored in the reservoir;
a first accumulator and a second accumulator, each of the first and second accumulators in fluid communication with the actuator and configured to dampen vibrations of the spray bar and thus to stabilize the angle of the inclinable part of the spray bar; and
a distributor in fluid communication with both the first accumulator and the second accumulator and with the pump, the distributor configured to be in either a circulation position or a non-return position;
wherein when the distributor is in the circulation position fluid flows through the distributor to maintain equal pressure in the first accumulator and the second accumulator.
2. The hydraulic control system of claim 1 , wherein modification of the angle of the inclinable part of the spray bar results from a manual actuation of a tilt correction function.
3. The hydraulic control system of claim 1 , wherein modification of the angle of the inclinable part of the spray bar results from an automatic actuation of a tilt correction function.
4. The hydraulic control system of claim 1 , wherein actuation of a tilt correction function causes the distributor to enter the circulation position.
5. The hydraulic control system of claim 1 , further comprising a direct-action adjustable pressure limiter and a check valve positioned in parallel relative to one another and positioned in series between the actuator and the distributor.
6. The hydraulic control system of claim 1 , wherein the distributor is positioned downstream from the first accumulator and the second accumulator, relative to the actuator.
7. The hydraulic control system of claim 1 , wherein the actuator is a through rod double-acting cylinder comprising a hollow body, a piston moving in the hollow body, a rod secured to the piston and extending on each side of the body, and a first chamber and a second chamber separated by the piston in the body.
8. The hydraulic control system of claim 7 , wherein the first accumulator is in fluid communication with the first chamber and the second accumulator is in fluid communication with the second chamber.
9. The hydraulic control system of claim 1 , wherein the actuator is formed by first and second single-acting cylinders mounted in opposition and having a same cross-section.
10. The hydraulic control system of claim 9 , wherein the first accumulator is in fluid communication with the first single-acting cylinder and the second accumulator is in fluid communication with the second single-acting cylinder.
11. The hydraulic control system of claim 1 , further comprising a first accumulator distributor between the first accumulator and the actuator and a second accumulator distributor between the second accumulator and the actuator to control the flow of fluid between the respective accumulator and the actuator to control the hardness of a damping of vibration of the spray bar.
12. A spray bar configured for being mounted on a carrier, the spray bar comprising:
a stationary support;
an inclinable part coupled to the stationary support at an articulation such that the inclinable part has a variable angle with respect to the stationary support;
first and second spray arms extending in opposite directions from the inclinable part; and
a control system comprising:
an actuator configured to change the angle of the inclinable part of the spray bar;
a pump in fluid communication with a reservoir, the pump configured to control the actuator using fluid stored in the reservoir;
a first accumulator and a second accumulator, each of the first and second accumulators in fluid communication with the actuator and configured to dampen vibrations of the spray bar and thus to stabilize the angle of the inclinable part of the spray bar; and
a distributor in fluid communication with both the first accumulator and the second accumulator and with the pump, the distributor configured to be in either a circulation position or a non-return position;
wherein when the distributor is in the circulation position fluid flows through the distributor to maintain equal pressure in the first accumulator and the second accumulator.
13. The spray bar of claim 12 , wherein actuation of a tilt correction function causes the distributor to enter the circulation position.
14. The spray bar of claim 12 , wherein the control system further comprises a direct-action adjustable pressure limiter and a check valve positioned in parallel relative to one another and positioned in series between the actuator and the distributor.
15. The spray bar of claim 12 , wherein the distributor of the control system is positioned downstream from the first accumulator and the second accumulator, relative to the actuator.
16. A vehicle comprising:
a spray bar mounted on the vehicle, the spray bar comprising:
a stationary support;
an inclinable part coupled to the stationary support at an articulation such that the inclinable part has a variable angle with respect to the stationary support;
first and second spray arms extending in opposite directions from the inclinable part; and
a control system comprising:
an actuator to change the angle of the inclinable part of the spray bar;
a pump in fluid communication with a reservoir, the pump configured to control the actuator using fluid stored in the reservoir;
a first accumulator and a second accumulator, each of the first and second accumulators in fluid communication with the actuator and configured to dampen vibrations of the spray bar and thus to stabilize the angle of the inclinable part of the spray bar; and
a distributor in fluid communication with both the first accumulator and the second accumulator and with the pump, the distributor configured to be in either a circulation position or a non-return position;
wherein when the distributor is in the circulation position fluid flows through the distributor to maintain equal pressure in the first accumulator and the second accumulator.
17. The vehicle of claim 16 , wherein actuation of a tilt correction function causes the distributor to enter the circulation position.
18. The vehicle of claim 16 , wherein the control system further comprises a direct-action adjustable pressure limiter and a check valve positioned in parallel relative to one another and positioned in series between the actuator and the distributor.
19. The vehicle of claim 16 , wherein the distributor of the control system is positioned downstream from the first accumulator and the second accumulator, relative to the actuator.
20. The vehicle of claim 16 , wherein the vehicle is an agricultural vehicle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/459,178 US20190321845A1 (en) | 2015-02-17 | 2019-07-01 | Control system, spray bar, carrier and method of implementation |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2015/050386 WO2016132023A1 (en) | 2015-02-17 | 2015-02-17 | Control system, spray bar, carrier and method of implementation |
US201715550695A | 2017-08-11 | 2017-08-11 | |
US16/459,178 US20190321845A1 (en) | 2015-02-17 | 2019-07-01 | Control system, spray bar, carrier and method of implementation |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2015/050386 Continuation WO2016132023A1 (en) | 2015-02-17 | 2015-02-17 | Control system, spray bar, carrier and method of implementation |
US15/550,695 Continuation US10343180B2 (en) | 2015-02-17 | 2015-02-17 | Control system, spray bar, carrier and method of implementation |
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US20190321845A1 true US20190321845A1 (en) | 2019-10-24 |
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US15/550,695 Active US10343180B2 (en) | 2015-02-17 | 2015-02-17 | Control system, spray bar, carrier and method of implementation |
US16/459,178 Abandoned US20190321845A1 (en) | 2015-02-17 | 2019-07-01 | Control system, spray bar, carrier and method of implementation |
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US15/550,695 Active US10343180B2 (en) | 2015-02-17 | 2015-02-17 | Control system, spray bar, carrier and method of implementation |
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US (2) | US10343180B2 (en) |
EP (1) | EP3258778B1 (en) |
CN (1) | CN107249320B (en) |
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CA (1) | CA2976278A1 (en) |
ES (1) | ES2718405T3 (en) |
PL (1) | PL3258778T3 (en) |
RU (1) | RU2666760C1 (en) |
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US11484900B2 (en) | 2021-01-07 | 2022-11-01 | S. C. Johnson & Son, Inc. | Dispenser |
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Publication number | Priority date | Publication date | Assignee | Title |
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GB2566546B (en) * | 2017-09-19 | 2019-12-18 | Jaguar Land Rover Ltd | An actuator system |
GB2566543B (en) * | 2017-09-19 | 2020-02-05 | Jaguar Land Rover Ltd | An actuator system |
US10667507B2 (en) * | 2017-12-11 | 2020-06-02 | Cnh Industrial America Llc | Front-boom sprayer with a boom center section and lift arm arrangement for improved field of view |
CN111567502A (en) * | 2020-06-08 | 2020-08-25 | 山东齐稷物联科技有限公司 | Plant protection unmanned vehicle with electricity generates water generating device |
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FR2270774A1 (en) * | 1974-05-15 | 1975-12-12 | Berthoud Sa | Suspension for agricultural spray boom - has lifting jack pivotal by shock absorbing side jacks |
FR2305116A1 (en) * | 1975-03-27 | 1976-10-22 | Cocentall Ateliers Carspach Sa | Wide boom agricultural sprayer - with hydraulic jack acting on top of frame for damping and inclination |
SU548251A1 (en) * | 1975-09-15 | 1977-02-28 | Головное Специализированное Конструкторское Бюро По Машинам Для Химической Защиты В Растениеводстве | Device for monitoring and stabilizing the pressure in the sprayer tank |
US4441655A (en) * | 1981-03-06 | 1984-04-10 | Blumhardt Manufacturing Co. | Agricultural spraying apparatus |
US5048292A (en) * | 1990-08-02 | 1991-09-17 | Kubik Philip A | Dual pump traverse and feed system |
JP3159296B2 (en) | 1995-12-26 | 2001-04-23 | 本田技研工業株式会社 | Lubrication system for four-stroke engine |
EP1167095A1 (en) * | 2000-06-26 | 2002-01-02 | K.U. Leuven Research & Development | Method and device for controlling and stabilising movement |
UA2126U (en) | 2003-02-06 | 2003-11-17 | Євген Степанович Бахмач | BEECH-DPI VALVE CONTROL DEVICE |
DE112005001807T5 (en) | 2004-07-26 | 2007-08-16 | Murphy, Richard, Glenmore | Stabilization and unlocking system and boom bracket and positioning system for an agricultural implement |
US7426827B2 (en) | 2006-06-15 | 2008-09-23 | Cnh Canada, Ltd. | Suspension arrangement for a boom assembly mounted on an agricultural sprayer |
DE102007047886A1 (en) * | 2007-11-28 | 2009-06-04 | John Deere Fabriek Horst B.V. | spray boom |
JP5763438B2 (en) * | 2011-06-21 | 2015-08-12 | カヤバ工業株式会社 | Boom sprayer and boom damping device |
FR2996412B1 (en) * | 2012-10-04 | 2014-12-19 | Gyrland Ind S A S | DEVICE FOR SUSPENSION OF AGRICULTURAL SPRAY RAMP |
JP2014132878A (en) | 2013-01-11 | 2014-07-24 | National Agriculture & Food Research Organization | Boom sprayer and boom vibration control device |
CN203575442U (en) * | 2013-10-31 | 2014-05-07 | 北京农业智能装备技术研究中心 | Automatic contour control device for spraying rod on ground |
-
2015
- 2015-02-17 WO PCT/FR2015/050386 patent/WO2016132023A1/en active Application Filing
- 2015-02-17 CN CN201580076253.XA patent/CN107249320B/en not_active Expired - Fee Related
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11484900B2 (en) | 2021-01-07 | 2022-11-01 | S. C. Johnson & Son, Inc. | Dispenser |
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EP3258778A1 (en) | 2017-12-27 |
ES2718405T3 (en) | 2019-07-01 |
UA118148C2 (en) | 2018-11-26 |
CA2976278A1 (en) | 2016-08-25 |
EP3258778B1 (en) | 2019-01-16 |
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CN107249320A (en) | 2017-10-13 |
CN107249320B (en) | 2020-06-16 |
US20180029060A1 (en) | 2018-02-01 |
WO2016132023A1 (en) | 2016-08-25 |
BR112017016286A2 (en) | 2018-03-27 |
US10343180B2 (en) | 2019-07-09 |
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