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EP4212671B1 - Dispositif automoteur pour le nettoyage du sable - Google Patents

Dispositif automoteur pour le nettoyage du sable Download PDF

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Publication number
EP4212671B1
EP4212671B1 EP23151141.1A EP23151141A EP4212671B1 EP 4212671 B1 EP4212671 B1 EP 4212671B1 EP 23151141 A EP23151141 A EP 23151141A EP 4212671 B1 EP4212671 B1 EP 4212671B1
Authority
EP
European Patent Office
Prior art keywords
sand
cleaning device
chassis
self
elevator
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.)
Active
Application number
EP23151141.1A
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German (de)
English (en)
Other versions
EP4212671A2 (fr
EP4212671A3 (fr
EP4212671C0 (fr
Inventor
Christoph Mayer-Klenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandmaster Gesellschaft Fuer Spielsandpflege und Umwelthygiene Mbh
Original Assignee
Sandmaster Gesellschaft Fuer Spielsandpflege und Umwelthygiene Mbh
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
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Publication of EP4212671A2 publication Critical patent/EP4212671A2/fr
Publication of EP4212671A3 publication Critical patent/EP4212671A3/fr
Application granted granted Critical
Publication of EP4212671B1 publication Critical patent/EP4212671B1/fr
Publication of EP4212671C0 publication Critical patent/EP4212671C0/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H12/00—Cleaning beaches or sandboxes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H12/00—Cleaning beaches or sandboxes
    • E01H12/008—Cleaning beaches or sandboxes cleaning sandboxes

Definitions

  • the present invention relates to a self-propelled device for cleaning sand.
  • Sand here means granular, mineral materials made of quartz, lime, dolomite or granite in particular, with a typical grain size of about 1 to 6 mm.
  • Ceramic includes in particular the loosening, aeration and removal of impurities, whereby the sand is raised above its surface and passes through a sieve that separates the impurities.
  • Typical applications of the invention relate to the cleaning of sand in sandpits and on fall protection areas beneath play and climbing equipment, as well as the sand areas at jumping pits and shot put facilities in schools and sports facilities, and also sand areas on beaches and leisure facilities.
  • Sand cleaning at playgrounds and sports and leisure facilities is carried out to a large extent by specialised commercial companies that are commissioned by local authorities such as towns and communities.
  • the surface layers of contaminated sand typically contain animal excrement, broken glass, bottle caps, cigarette butts and the like. Aerobic microflora predominates up to a distance of around 15 to 20 cm from the sand surface. This is followed by anaerobic microflora at a depth of around 25 to 40 cm, depending on the type, quality and compaction of the sand.
  • the bacteria and microorganisms cause the typical musty smell that can occur on sand surfaces that have not been maintained for a long time.
  • the sand on the fall protection areas below play and climbing equipment must also be regularly loosened to a depth of at least 40 cm to ensure effective fall protection.
  • sand cleaning devices which have as their essential components a chassis, a drive motor, a sand elevator, a sieve, a container for collecting contaminants and mechanical control and regulation devices.
  • the sand elevator was designed in accordance with the state of the art (EP 1 108 816 A2 ) is provided with a plurality of sand conveying elements (slats, shovels, buckets) which are attached to a motor-driven, endless conveyor device (parallel and spaced-apart chains or belts or a single, wide, rotating belt made of rubber material) which rotates between a digging position immersed in the sand to be cleaned and a preferably overhead discharge position from which the sand lifted with the aid of the sand conveying elements is thrown onto a sieve which allows the sand to pass through and which separates off impurities which end up in the receiving container.
  • the sieve can be an inclined vibrating sieve and the sand which has passed through the sieve automatically falls back onto the sand surface behind the receiving point.
  • the frame (chassis) running on wheels, crawlers and/or chains is typically equipped with at least one motor-driven shaft in order to create a mobile, self-propelled sand cleaning device.
  • the engine on the chassis typically an internal combustion engine, is expediently coupled to a hydraulic pump, which supplies the various consumers (drive, conveyor device of the sand elevator) with hydraulic fluid via hydraulic lines.
  • a cover and housing is typically provided at least for the sand elevator.
  • “Digging section” refers - depending on the adjustment/lowering of the sand elevator - to the section of the conveyor system with conveyor elements that is immersed in the sand to be cleaned so that the moving conveyor elements dig into the sand and pick up sand.
  • “Digging position” refers to a position of the conveyor in which the digging piece is immersed in the sand to be cleaned.
  • “Digging depth” refers to the distance between the middle sand surface and the lower edge of the lowest conveyor element within the sand to be cleaned when the digging piece is in its digging position.
  • the solid, heavy frame of the sand cleaning device can serve as a reference point for the sand surface when it is standing or moving on the sand surface.
  • the sand elevator is used to pick up the sand using a digging piece that can be adjusted between a selectable working position (digging position) that is immersed to different depths in the sand to be cleaned and a rest position above the sand surface.
  • the digging piece assumes this rest position, for example, when the mobile sand cleaning device automatically moves from its transport vehicle to the site of use, or when the sand cleaning device is reset during the sand cleaning process. Starting from this rest position, the digging piece must be lowered until it is immersed sufficiently deeply in the sand to be cleaned so that the sand elevator can pick up and circulate sand.
  • This type of digging piece lowering is achieved by adjusting the sand elevator in relation to a frame (chassis) of the sand cleaning device that holds the sand elevator.
  • the entire sand elevator can, for example, be pivotably attached to the chassis.
  • the pivoting is carried out by a hydraulically operated piston/cylinder arrangement, the piston rod of which adjusts the sand elevator so that its excavation piece is immersed more or less deeply into the sand.
  • the entire sand elevator can be moved along two rails that are parallel and spaced apart from each other and almost vertically aligned and fixed to the chassis (downwards) onto the sand surface or away from the sand surface (upwards). upwards).
  • the downward adjustment (lowering) is typically carried out solely under the influence of gravity.
  • the upward adjustment (raising) is provided by at least one hydraulically operated piston/cylinder arrangement, which is inserted between a support on the chassis and an abutment on the sand elevator.
  • Known mobile sand cleaning devices of this type are in use and are described, for example, in the documents DE-C2-32 09 134 , DE-C2-34 37 926 , DE-A1-35 13 454 , DE-A1-40 07 409 or in the German patent application 198 53 351.9 described.
  • the digging depth is determined solely and exclusively by appropriate adjustment and locking of levers, rods or lifting cylinders, which fix the sand elevator in a certain position with respect to the chassis, so that the digging piece is immersed in the sand to be cleaned up to a certain digging depth according to this sand elevator position.
  • the document EP 0 319 420 B1 discloses a self-propelled machine for cleaning beaches.
  • the known self-propelled device has a tipping container into which the collected waste is conveyed. Furthermore, at the front of the device in the direction of travel there is a pivoting conveyor which ends at its inlet in a scraper plate which slides over the beach to be cleaned in order to collect waste which is then conveyed into the tipping container by means of the two-stage conveyor.
  • the document DE 36 27 015 A1 discloses an earth-clearing device, for example in the form of a bucket wheel excavator, with a chassis on which an elevator is located, the inclination of which can be changed relative to the chassis.
  • an actuating cylinder is used, to which a sensor is assigned, which detects the respective inclination of the elevator and in converts electrical signals that are fed to a signal processing device.
  • the technical field of the present invention is to specify or provide a device for sand cleaning, in particular for commercial purposes.
  • Corresponding sand cleaning devices according to this state of the art have proven themselves. These sand cleaning devices of the state of the art are usually guided by an operator on two longitudinally protruding rearward handles like similar small agricultural devices such as scarifiers, motor plows or snow blowers. The operator thus determines both the direction of travel and the immersion depth (digging depth) of the sand cleaning device.
  • This has the disadvantage that the operator must constantly walk behind the machine and is exposed to the noise and exhaust fumes of the drive motor, which is usually designed as an internal combustion engine. In addition, the operator must bend down when working under trees or playground equipment. Furthermore, the operator is exposed to strong vibrations via the handles and has to endure the noise of the internal combustion engine.
  • this object is achieved with a device according to claim 1 or 11.
  • a sand cleaning device which comprises a chassis with chains and a sand elevator which is adjustable, in particular lowerable and raiseable, on the chassis and is equipped with a motor-driven, rotating conveyor device, which is provided with a plurality of conveyor elements which rotate between a digging position immersed in the sand to be cleaned and a discharge position from which the sand transported in the conveyor elements is thrown onto a sieve which allows the sand to pass through and which separates impurities which end up in a collecting container, the chains and the conveyor device being driven by an electric motor each, while the sand elevator is moved by means of hydraulic cylinders whose pressure is supplied by an electrically driven pump, and accumulators serving to supply the electric motors are also on the chassis
  • the operator is not exposed to the noise and exhaust fumes of an internal combustion engine, and the sand cleaning device according to the invention can also be used in noise-sensitive areas.
  • the accumulators are mounted in the rear third of the chassis, as seen in the direction of travel. This prevents the sand cleaning device according to the invention from getting stuck in the loose, cleaned sand, since the center of gravity located far back compensates for the forces resulting from the digging action of the sand elevator.
  • the tracks of the chassis are each guided over 3 wheels with parallel axes in one plane, with 2 wheels arranged in such a way that they press the tracks onto the ground, while the 3rd wheel is arranged offset to the front above the rear wheel and is driven by the electric motor. In this way, sufficient ground clearance of the sand cleaning device can be ensured, even if the electric drive motors are significantly larger than the hydraulic motors that have been used up to now.
  • a mobile sand cleaning device with a chassis on which a sand elevator is adjustable, in particular lowerable and raiseable, which is equipped with an endless, motor-driven, rotating conveyor device, which is provided with a plurality of conveyor elements that rotate between a digging position immersed in the sand to be cleaned and a discharge position, from which the sand transported in the conveyor elements is thrown onto a sieve located on the sand cleaning device, which allows the sand to pass through and separates impurities, which end up in a collecting container, wherein the sand cleaning device is additionally provided with a remote control for the functions of direction of travel, travel speed, lowering and raising as well as tilting the sand elevator.
  • This also makes the work considerably easier for the operator. They no longer have to run behind the machine the entire time, and the machine, which can be built relatively flat, can then also be used under trees or playground equipment without the operator having to squeeze under these obstacles.
  • a sand cleaning device 1 comprises a chassis 10 which is provided with crawler tracks 12.
  • the tracks 12 are arranged on the outside of the sides of the chassis 10 and extend over the entire length of the chassis 10.
  • the tracks 12 are deflected via three wheels 14, 16 and 18 which lie in one plane with parallel axes.
  • the wheels 14, 16 deflect the track 12 to the front and rear and simultaneously press the track 12 onto the ground.
  • the wheel 18 is arranged slightly offset to the front above the rear wheel 16 and is driven by an electric motor. It serves to drive the track 12.
  • the front wheel 14 has a significantly larger diameter than the other two wheels 16, 18. This is intended to prevent the machine from getting stuck in the sand that it loosens up during cleaning.
  • the chassis 10 carries the sand elevator 36, which can be moved up and down relative to the chassis 10 by means of hydraulic cylinders and its inclination can be adjusted relative to the vertical.
  • This additional adjustment of the inclination angle of the sand elevator 36 allows better adaptation to different hard surfaces to be processed and also enables greater ground clearance during transport and, if necessary, when loading the sand cleaning device 1 onto a transport vehicle.
  • the sand elevator 36 can also be moved by means of further Hydraulic cylinder can be moved laterally relative to the chassis 10.
  • the sand elevator 36 comprises a conveyor device 37 enclosed by a housing 38.
  • This conveyor capacity 7 and 30 is designed as a wide belt, which is deflected at the top and bottom over two rollers 39 arranged horizontally and with axes parallel to one another.
  • One of the rollers 39 preferably the upper one, is driven by an electric motor.
  • the belt 37 extends over the entire working width of the sand elevator 36.
  • Conveyor elements 76 are arranged on the belt 37 at equal distances and projecting radially outwards.
  • the Sandelevator 36 works as follows: By rotating one of the rollers 39, the conveyor device 37 rotates clockwise, ie in such a way that the conveyor elements 76 are moved forwards at the bottom. The conveyor elements 76 are thus filled with the sand into which the conveyor device 37 is immersed. This is conveyed upwards on the distal side of the housing 38, and the sheets 78 prevent it from escaping laterally from the conveyor elements 76.
  • the sand is then ejected backwards through the opening of the housing 38 by centrifugal force and gravity and hits a collecting sieve 48.
  • This can have an appropriate mesh diameter so that only sand components of a corresponding fineness pass through the collecting sieve 48 and are deposited again on the bottom.
  • the collecting sieve 48 and the collecting container 50 preferably consist of metal grids with a corresponding mesh size.
  • the collecting sieve 48 and/or the collecting container 50 can each be provided with a knocking device 51 so that the sand falls through better. These are preferably also driven by an electric motor, but a hydraulic drive is also conceivable.
  • control panel 60 At the other, rear end of the chassis 10, there is a control panel 60 at the top with the controls required to control the sand cleaning device 1, for example when a remote control cannot be used.
  • the control panel 60 also includes a plug for connecting a charging cable for charging the accumulators 80 when installed.
  • box 62 In front of this control panel there is a box 62 which contains all the control electronics.
  • An emergency stop switch 64 and, if necessary, an antenna for the remote control and, if necessary, for a satellite navigation system can be arranged on this.
  • a filler neck 66 for hydraulic oil is provided to the left of the control panel 60.
  • an electric drive is provided according to the invention, it has proven advantageous not to use electric motors with worm gears for adjustment functions such as raising and lowering or tilting the sand elevator 36, but rather hydraulic cylinders, since these are much less sensitive to contamination by the sand. Therefore, a tank for hydraulic oil and an electrically driven hydraulic oil pump are also provided under the cover 68.
  • the accumulators 80 are cuboid-shaped (70 cm long, 30 cm wide, 20 cm high).
  • the accumulators 80 are provided with a handle 82 arranged centrally on their rear-facing surface. This handle 82 can, as shown, be folded flat so that it does not get in the way.
  • This arrangement of the accumulators 80 ensures that the center of gravity of the sand cleaning machine 1 according to the invention is shifted as far back as possible. This successfully prevents the machine according to the invention from getting stuck in the sand that it loosens up during cleaning.
  • FIG. 6-10 show the chassis 10 of the sand cleaning device 1 alone, ie after dismantling the sand elevator 36.
  • This shows a carrier plate 22, which normally carries the sand elevator 36, and which can be moved up and down along rails 26 by means of a hydraulic cylinder 24.
  • the rails 26 can also be moved together at the top forwards and backwards by means of a hydraulic cylinder (not shown), whereby the inclination of the sand elevator 36 can be adjusted.
  • the main electrical control cabinet 28 i.e. the main electrical distribution
  • Figure 10 still shows fender systems 30 right and left above the chains 12.
  • FIG. 11-15 show the chassis 10 of the sand cleaning device 1 after removing all panels.
  • the hydraulic pump 90 with the tank 92 arranged above it for the hydraulic oil and the electric drive motor 94, which is arranged in front of the pump 90 in such a way that the common axis of rotation extends along the direction of travel of the chassis 10.
  • this assembly is arranged on the left side of the chassis 10 in the rear half.
  • 96 designates hydraulic valves on the left side of the chassis 10 for actuating the knocking device 51.
  • 98 designates a valve assembly on the right side of the chassis 10 for adjusting the sand elevator 36.
  • a charger 84 for the accumulators 80 is arranged opposite the tank 92 on the other side of the chassis 10. This allows the sand cleaning device 1 according to the invention to be charged using normal mains plugs. The sand cleaning device 1 is therefore independent of a special charging infrastructure.
  • the chassis 10 according to the invention also has a 12 volt network in order to be able to supply and use normal electrical consumers for motor vehicles.
  • Figure 16 shows one of the accumulators 80 from the side. On its right side, the handle 82 for easier handling of the accumulators 80 can be seen and on its left side, a protective cover 88 for the plug device for electrically connecting the accumulator 80.
  • the sand cleaning device 1 according to the invention can also be operated for the first time by means of a remote control 100.
  • Figures 17-20 show the remote control 100 for the sand cleaning device 1.
  • the control commands of the remote control 100 are preferably transmitted via radio or infrared.
  • the remote control 100 comprises a substantially elongated, cuboid-shaped housing 110, which can be worn by the operator using a belt (not shown) so that it hangs in front of the operator's stomach at elbow height, where it can be operated in an ergonomically optimal manner.
  • a display 120 On the upper surface of the housing 110, i.e. the surface facing upwards in this position, all of the control elements required for remote control of the sand cleaning device 1 and a display 120 are arranged as follows:
  • the display 120 is arranged centrally and offset towards the side of the surface of the housing 110 facing away from the operator, as in Figure 17 clearly visible.
  • a joystick 130 and 140 is attached to both sides of the display 120.
  • the right joystick 140 is used to control the direction of travel and the speed of the sand cleaning device 1.
  • the sand cleaning device 1 can be steered accordingly by moving the joystick 140 to the right and left. By moving the joystick 140 at an angle, the sand cleaning device according to the invention can make a curve.
  • the movement commands from the joystick 140 are converted into control signals for the drive motors of the chains 12 via electronics in the main control cabinet 28.
  • the left joystick 130 is used to control the sand elevator 36.
  • a forward movement of the joystick 130 leads to a lowering of the sand elevator 36, and a backward movement of the joystick 130 leads to a lifting of the sand elevator 36.
  • the right and Leftward movement of the joystick 130 leads to a flatter or steeper incline of the sand elevator 36.
  • a button 150 that can be moved to the right and left is provided, with which the optional right and left movement of the sand elevator 36 relative to the chassis 10 can be controlled.
  • a rotary knob 160 for setting the drift compensation, i.e. for a stronger chain drive of the downhill chain if the sand cleaning device 1 is travelling at an angle or across a slope.
  • an emergency stop switch 170 is provided, with which an immediate complete shutdown of the sand cleaning device 1 can be brought about.
  • All operating parameters of the sand cleaning device 1 that are important for the operator can be shown on the display 120, for example driving speed, charge level of the accumulators 80, rpm, digging depth and angle of inclination of the sand elevator 36 and rpm (or speed) of the knocking device 51.
  • the housing 110 of the remote control 100 has two side walls 190 which are widened at the bottom end towards the back and the front. The widenings each enclose an opening. At their two upper corners, the side walls 190 run into two arms each which protrude diagonally towards the front and the back, each of which has a round rod 192 at its end, with which it is connected to the other side wall.
  • the rods 192 make it easier to handle the remote control 100 and at the same time prevent the operating elements of the remote control 100 from being inadvertently activated by accidental contact.
  • the arms each have oval openings 193 which can be used, for example, to guide the carrying strap for the operator through.
  • the two arms of a side wall are connected at half their height to a bridge-like stabilizing element which is slightly curved downwards.
  • the arm projecting away from the operator is connected to the lower widening of the respective side wall 190 by a stabilizing element running straight downwards.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Claims (11)

  1. Dispositif automoteur (1) de nettoyage du sable,
    comprenant un châssis (10) muni de chaînes (12) et un élévateur de sable (36) maintenu sur le châssis (10) de manière réglable, en particulier de manière à pouvoir être abaissé et soulevé, et équipé d'un moyen de transport (37) en circulation qui peut être entraîné par un moteur et qui est pourvu d'une pluralité d'éléments de transport (76) qui circulent entre une position de creusement plongeant dans le sable à nettoyer et une position de déversement à partir de laquelle le sable, transporté dans les éléments de transport (76), est projeté sur un tamis (48) qui laisse passer le sable et qui sépare les impuretés qui parviennent dans un récipient collecteur (50),
    caractérisé en ce que
    l'entraînement des chaînes (12) et du moyen de transport (37) est assuré par un moteur électrique respectif, tandis que le mouvement de l'élévateur de sable (36) est assuré par des vérins hydrauliques (24, 25) dont la pression d'huile est fournie par une pompe (90) entraînée électriquement, et des accumulateurs (80) servant à alimenter les moteurs électriques sont également disposés sur le châssis (10) ; et
    en ce que les accumulateurs (80) sont disposés dans le tiers arrière du châssis (10), vu dans le sens de déplacement.
  2. Dispositif automoteur (1) de nettoyage du sable selon la revendication 1, caractérisé en ce que les accumulateurs (80) sont pourvus d'au moins une poignée (82) et sont insérés dans le châssis (10) de manière à pouvoir être remplacés en quelques manipulations.
  3. Dispositif automoteur (1) de nettoyage du sable selon la revendication 2, caractérisé en ce que les accumulateurs (80) peuvent être bloqués et débloqués dans le châssis (10) à l'aide de dispositifs d'encliquetage (81).
  4. Dispositif automoteur (1) de nettoyage du sable selon l'une des revendications 1 à 3,
    caractérisé en ce que les chaînes (12) du châssis (10) sont guidées chacune par trois roues (14, 16, 18) dont les axes sont parallèles et qui sont situées dans un même plan, deux roues (14, 16) étant disposées de manière à presser la chaîne (12) sur le sol, tandis que la troisième roue (18) est décalée vers l'avant au-dessus de la roue arrière (16) et est entraînée par le moteur électrique.
  5. Dispositif automoteur (1) de nettoyage du sable selon la revendication 4, caractérisé en ce que la roue avant (14) présente un diamètre supérieur à celui des deux autres roues (16, 18).
  6. Dispositif automoteur (1) de nettoyage du sable selon l'une des revendications 1 à 5,
    caractérisé en ce que l'élévateur de sable (36) est conçu pour être également déplaçable latéralement par rapport au châssis (10).
  7. Dispositif automoteur (1) de nettoyage du sable selon l'une des revendications 1 à 6,
    caractérisé en ce que le dispositif (1) de nettoyage du sable est muni d'une télécommande (100) pour les fonctions que sont le sens de déplacement, la vitesse de déplacement, l'abaissement et le levage ainsi que l'inclinaison de l'élévateur de sable (36).
  8. Dispositif automoteur (1) de nettoyage du sable selon la revendication 7, caractérisé en ce que la télécommande (100) comprend également les fonctions que sont le fonctionnement et la vitesse de l'élévateur de sable (36) et/ou le fonctionnement et la vitesse de moyens batteurs (51) pour le tamis (48) et/ou pour le récipient de collecte (50).
  9. Dispositif automoteur (1) de nettoyage du sable selon les revendications 7 et 8,
    caractérisé en ce que la télécommande (100) comprend également les fonctions que sont la correction de dérive et/ou le réglage horizontal de l'élévateur de sable (36).
  10. Dispositif automoteur (1) de nettoyage du sable selon l'une des revendications 7 à 9,
    caractérisé en ce que la télécommande (100) fonctionne par ondes électromagnétiques, de préférence par ondes radio ou par infrarouge.
  11. Dispositif automoteur (1) de nettoyage du sable selon l'une des revendications 7 à 10,
    caractérisé en ce que la télécommande (100) comprend un écran d'affichage (120) sur lequel sont affichés les états de fonctionnement actuels du dispositif (1) de nettoyage du sable.
EP23151141.1A 2022-01-13 2023-01-11 Dispositif automoteur pour le nettoyage du sable Active EP4212671B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022100698.0A DE102022100698A1 (de) 2022-01-13 2022-01-13 Vorrichtung zur Sandreinigung

Publications (4)

Publication Number Publication Date
EP4212671A2 EP4212671A2 (fr) 2023-07-19
EP4212671A3 EP4212671A3 (fr) 2023-10-11
EP4212671B1 true EP4212671B1 (fr) 2024-10-09
EP4212671C0 EP4212671C0 (fr) 2024-10-09

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EP23151141.1A Active EP4212671B1 (fr) 2022-01-13 2023-01-11 Dispositif automoteur pour le nettoyage du sable

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EP (1) EP4212671B1 (fr)
DE (1) DE102022100698A1 (fr)

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CN110629726B (zh) * 2019-09-30 2021-03-09 上海海洋大学 一种生态环保型海滩废弃物收集及处理装置
DE102019217807A1 (de) 2019-11-19 2021-05-20 Sandmaster Gesellschaft für Spielsandpflege und Umwelthygiene mbH Verfahren und Vorrichtung zur Sandreinigung
CN111877248A (zh) * 2020-08-07 2020-11-03 青田合页环保科技有限公司 一种沙滩垃圾清理筛沙设备

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