WO2020169157A1 - Véhicule à roues doté d'un corps de benne basculante monté sur châssis - Google Patents

Véhicule à roues doté d'un corps de benne basculante monté sur châssis Download PDF

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Publication number
WO2020169157A1
WO2020169157A1 PCT/DK2020/050037 DK2020050037W WO2020169157A1 WO 2020169157 A1 WO2020169157 A1 WO 2020169157A1 DK 2020050037 W DK2020050037 W DK 2020050037W WO 2020169157 A1 WO2020169157 A1 WO 2020169157A1
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WO
WIPO (PCT)
Prior art keywords
pressure
wheeled vehicle
main conduit
hydraulic
hydraulic cylinder
Prior art date
Application number
PCT/DK2020/050037
Other languages
English (en)
Inventor
Per Lavmand MÜLLER
Original Assignee
Skan-Trailer A/S
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
Application filed by Skan-Trailer A/S filed Critical Skan-Trailer A/S
Publication of WO2020169157A1 publication Critical patent/WO2020169157A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/16—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/16—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms
    • B60P1/162—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms the hydraulic system itself

Definitions

  • the disclosure relates to a wheeled vehicle with a chassis mounted and hydraulically operated tipper body such as e.g. a dump body.
  • US2015015054 discloses a wheeled vehicle according to the preamble of claim 1.
  • Wheeled vehicles with chassis mounted hydraulically operated tipper bodies such as tipper lorries or tipper trucks or tractors with tipper trailers, are widely used for transport of bulk materials.
  • a wheeled vehicle has a tipper body, which is pivotally mounted on the vehicle chassis and is capable of being raised and lowered by a hydraulic actuator .
  • the tipper body such as e.g. a ladle is moved to its raised position by a hydraulic cylinder, e.g. a single acting linear hydraulic actuator.
  • a hydraulic cylinder e.g. a single acting linear hydraulic actuator.
  • an operator manipulates a valve that connects the hydraulic cylinder to a hydraulic pump.
  • the operator manipulates the valve that connects the hydraulic cylinder to tank until the tipper body rests on the chassis, so that there is no load on the hydraulic cylinder when the vehicle is driving.
  • 03030-PCT returned to its fully lowered position before the wheeled vehicle is driven for two reasons.
  • the first reason is that the hydraulic cylinder that is used to move the tipper body will be damaged if it is loaded, especially when the vehicle drives and passes over bumps or other irregularities of the road surface. In order to meet this challenge, it has to be ensured that the tipper body is in its fully lowered position with the tipper body resting on the chassis when the wheeled vehicle is driven. However, an operator may not be able to judge whether or not the tipper body is completely resting on the chassis and is in its fully lowered position, and an operator may be in a rush and not patient enough to ensure that the tipper body is in its fully lowered position before driving the wheeled vehicle.
  • the second reason for the tipper body needing to be in its completely lowered position when the vehicle is driven is the risk of a raised tipper body crashing into overhead structures, such as e.g. bridges, pipelines or wires thereby causing damage to the wheeled vehicle and to the overhead structures .
  • a wheeled vehicle comprising:
  • a hydraulic cylinder operably arranged between the chassis and the tipper body
  • a hydraulic pump connected with an inlet fluidically connected to the tank and with an outlet fluidically connected to the manually operated valve
  • the manually operated valve having at least:
  • a pressure sensor configured to issue a pressure signal indicative of the pressure in the main conduit
  • a drain conduit fluidically connecting the main conduit to the tank
  • control valve controlling flow through the drain conduit, a controller in receipt of the pressure signal and operably connected to the control valve,
  • the controller being configured to move the control valve to an open position when the pressure signal indicates that the
  • 03030-PCT pressure in the main conduit is below a first pressure threshold PI .
  • the control valve By providing a drain conduit, and by controlling the drain conduit to be open when the pressure in the main conduit is below a first pressure threshold, it is ensured that the hydraulic cylinder is connected to tank, for example when the tipper body is not or not completely in its fully lowered position.
  • the first threshold is chosen to be slightly lower than the pressure required to obtain lift (upward movement) of the tipper body.
  • the control valve is open and allows hydraulic medium to be drained until the pressure in the main conduit raises above the first pressure threshold PI.
  • lift of the tipper body is provided by supplying pressurized hydraulic medium to the hydraulic cylinder.
  • lowering of the tipper body is provided by connecting the hydraulic cylinder to the tank.
  • the restriction to flow from the main conduit to tank through the drain conduit is lower, preferably is substantially higher than the flow restriction from the manually operated valve through the main conduit to the hydraulic cylinder, thus ensuring that the pressure in the main conduit rises quickly above the first pressure threshold PI, upon which the control unit closes the control valve.
  • the required restriction to flow through the drain conduit can e.g. be obtained by
  • 03030-PCT choosing a conduit with a diameter that is less than the diameter of the main conduit, or by applying a dedicated hydraulic restriction in the drain conduit or in the control valve .
  • the manually operated valve is configured to automatically returned to the first position
  • the main conduit comprises a coupling, preferably a quick coupling .
  • the wheeled vehicle comprises a tractor and a trailer with the tipper body mounted on the chassis of the trailer, the quick coupling is arranged between the tractor and trailer, with the portion of the main conduit associated with the trailer being connected to the hydraulic cylinder that is arranged between the chassis of the trailer and the tipper body.
  • the controller is in receipt of a handbrake signal indicative of a handbrake of the wheeled vehicle being on or off, the controller being configured to issue an alarm when the pressure signal indicates that the hydraulic pressure in the main conduit is above a second pressure threshold P2, and the handbrake signal simultaneously indicates that the handbrake is off.
  • the second pressure threshold can be lower, higher or equal to the first pressure threshold PI.
  • the controller is in receipt of a vehicle speed signal indicative of the speed of the wheeled vehicle, the controller being configured to issue an alarm when the pressure signal indicates that the hydraulic pressure in the main conduit is above a given threshold P2, and the speed signal indicates simultaneously that the speed of the wheeled vehicle is above a given speed threshold VI.
  • the speed threshold can be equal to zero or can be a relatively low speed such as e.g. a few kilometers per hour, preferably 12 km/h, more preferably 8 km/h, even more preferably 6 km/h and most preferably 4 km/h.
  • the hydraulic cylinder is a single acting hydraulic linear actuator .
  • the flow resistance for flow of hydraulic medium from the main conduit to the tank when the control valve is open is lower than the flow resistance from the manually operated valve through the main conduit to the hydraulic cylinder.
  • the controller is configured to close the control valve when the pressure signal indicates that the pressure in the main conduit is above a third pressure threshold P3.
  • the third pressure threshold P3 can be higher or equal to the first pressure threshold PI.
  • the wheeled vehicle comprises a handbrake sensor that issues a
  • 03030-PCT signal indicating of a vehicle handbrake being on or off
  • the controller is configured to open the control valve on the further condition that the handbrake sensor indicates that the vehicle handbrake is off.
  • the wheeled vehicle further comprises a handbrake sensor that issues a signal indicating of a vehicle handbrake being on or off and the controller is configured to open the control valve on the further condition that the handbrake sensor indicates that the vehicle handbrake is off.
  • drain conduit fluidically connecting said main conduit directly to tank.
  • Fig. 1 is a side view of an embodiment of a wheeled vehicle with a tractor and a trailer with a tipper body
  • Fig. 2 is a diagrammatic representation of a hydraulic system and controller of the wheeled vehicle Fig. 1,
  • FIG. 3 is a side view of embodiment of a wheeled vehicle with a tipper body
  • Fig. 4 is a diagrammatic representation of a hydraulic system and controller of the wheeled vehicle of Fig. 3, and
  • Fig. 5 is a diagrammatic representation of a hydraulic system and controller of Fig. 2.
  • Fig. 1 shows a wheeled vehicle 1 in the form of a combination of a tractor 4 and a trailer 5 connected to the tractor 4. Both the tractor 4 and the trailer 5 are provided with wheels.
  • the wheeled vehicle 1 is suitable for participating in road traffic .
  • the tractor 4 is of conventional overall design and comprises a cab 19 and an engine (not shown) for traction.
  • the engine is also used to power a hydraulic pump 9 that will be described in greater detail with reference to Figure 2.
  • the trailer 5 is provided with a chassis 2 on which a tipper body (such as e.g. a ladle) is pivotally mounted.
  • a hydraulic cylinder 6 is used to raise and lower the tipper body between the lowered, rest position (shown in solid lines) and the raised, tipping position (shown in broken lines) . In the fully lowered position, the tipper body 3 rests completely on the chassis 2 and there is not (and must not) be any load of the tipper body 3 on the hydraulic cylinder 6.
  • Fig. 2 shows diagrammatically the electrohydraulic control system that is used to control the movement of the tipper
  • the electrohydraulic control system comprises a hydraulic system comprising a tank 7 for the storage of hydraulic medium, a hydraulic pump 9 that is powered by the engine of the vehicle or by an electric motor that in turn receives electrical power from the electric system of the wheeled vehicle 1 or form the engine.
  • the hydraulic pump 9 is in an embodiment a suitable positive displacement pump such as e.g. a gear pump or a piston pump.
  • An inlet of the hydraulic pump 9 is fluidly connected to the tank 7 and an outlet of the hydraulic pump 9 is connected to a feed conduit 14.
  • Movement (lift) of the tipper body 3 is achieved by a linear hydraulic actuator such as e.g. a single acting hydraulic cylinder 6.
  • the hydraulic cylinder 6 is in an embodiment a telescopic hydraulic cylinder. One end of the hydraulic cylinder 6 is secured to the chassis 2 and the opposite end of the hydraulic cylinder 6 is secured to the tipper body 3.
  • a manually operated valve 8 controls the flow to and from the hydraulic cylinder 6.
  • the manually operated valve 8 has at least three ports and has at least three positions.
  • An inlet port of the manually operated valve 8 is connected to the feed conduit 14 to receive pressurized hydraulic medium from the hydraulic pump 9.
  • Another port of the manually operated valve 8 is connected to a tank conduit 17 that connects the port to the tank 7.
  • Another port of the manually operated valve 8 is connected to a main conduit 10.
  • the main conduit 10 connects the manually operated valve 8 to the hydraulic cylinder 6.
  • at least a part of the main conduit 10 is formed by a hydraulic hose.
  • the manually operated valve 8 is biased to automatically return to a first position in which flow to and from the hydraulic actuator 6 via the main conduit 10 is prevented. Thus, the tipper body 3 is kept in position when the manually operated valve is in its first position.
  • a handle 18 is operably connected to the manually operated valve 8.
  • the handle 18 can be electronically connected to the manually operated valve 8 via an electric signal line, as shown in Fig. 2, but it is understood that the handle 18 could also be pneumatically, hydraulically or mechanically connected to the manually operated valve 8.
  • An operator can move the manually operated valve 8 by operation of a handle 18 into a second position or into a third position.
  • the outlet of the hydraulic pump 9 is connected to the hydraulic cylinder 6 via the main conduit 10.
  • flow of pressurized hydraulic medium from the pump 9 to the hydraulic cylinder 6 will raise the tipper body 3.
  • the hydraulic cylinder 6 In the third position of the manually operated valve 8 the hydraulic cylinder 6 is connected to the tank 7 via the main conduit 10 and via the tank conduit 17. In the third position load on the hydraulic cylinder 6 will cause the drive medium in the cylinder 6 to flow to tank. This process is driven by the weight of the tipper body 3 on the hydraulic cylinder 6.
  • a quick coupling 15 in the main conduit 10 allows the hydraulic system to be coupled and decoupled when the trailer 5 is connected and disconnected from the tractor 4.
  • a drain conduit 12 connects the main conduit 10 to the tank 7.
  • a control valve 13 in the drain conduit 12 controls the flow through the drain conduit 12.
  • the control valve 13 has two positions; an open position and a closed position.
  • the control valve 13 is biased to the closed position.
  • Fig. 2 the control valve 13 is shown in its closed position, i.e. in the position that the control valve 13 has when the pressure in the main conduit is above the first pressure threshold PI.
  • a pressure sensor 11 is connected to the main conduit 10 and issues a signal indicative of the pressure in the hydraulic medium in the main conduit 10.
  • the electronic hydraulic control system comprises a controller in the form of an electronic control unit 50.
  • the electronic control unit 50 is in receipt of the signal from the pressure sensor 11 and the electronic control unit 50 controls the operation of the control valve 13.
  • the electronic control unit 50 is also in receipt of a signal from the handle 18 or from the manually operated valve 8, that informs the electronic control unit 50 of the position of the manually operated valve 8.
  • the electronic control unit 50 is connected to a further number of sensors and components, as described in more detail further below.
  • the electronic control unit 50 instructs the control valve 13 to move to its open position when the signal of the pressure sensor 11 indicates that the pressure the hydraulic medium in the main conduit 10 is below a first threshold PI.
  • the first threshold PI is a pressure that is slightly below the pressure that is required to move the tipper body 3 upwards when the tipper body is empty, i.e. free of any load.
  • a handbrake signal indicates that the handbrake of the vehicle is released before the electronic control unit 50 issue a signal to the control valve 13 to move to its open position.
  • the control valve 13 is not moved to its open position when the above conditions apply but the handbrake signal indicates that the handbrake is on.
  • the electronic control unit 50 instructs the control valve 13 to move to its closed position when the signal of the pressure sensor indicates that the pressure in the hydraulic medium in the main conduit 10 is above a third pressure P3.
  • the third pressure threshold P3 can be equal to the first pressure threshold PI or be slightly higher than the first pressure threshold PI .
  • the resistance to flow for the hydraulic medium from the main conduit 10 to tank through the drain conduit 12 is significantly larger than the resistance to flow for the drive medium from the manually operated valve 8 through the main conduit 10 to the hydraulic cylinder 6.
  • This difference in flow resistance can e.g. be obtained by the drain conduit 12 having a lesser cross sectional area than the main conduit 10, or by a dedicated flow resistance 16 in conduit 12 or by the control valve 13 having a flow resistance in its open position that provides the required lower resistance.
  • the electronic control unit 50 is connected to a handbrake sensor 20 that issues a signal representative of the handbrake of the wheeled vehicle 1 being on or off.
  • the electronic control unit is configured to issue an alarm when the handbrake signal indicates that the
  • 03030-PCT handbrake is off and the pressure signal indicates that simultaneously the pressure in the main conduit 10 is above a second pressure threshold P2 or above the second pressure.
  • the second pressure threshold P2 can be equal to the first pressure threshold PI or be higher than first thresher pressure PI.
  • the electronic control unit 50 is configured to prevent driving the wheeled vehicle when the alarm is issued, or after a given time span after the alarm is issued on the basis of the handbrake being off.
  • This combination of conditions ensures that an alarm is issued, or driving of the wheeled vehicle 1 is prevented, when the tipper body 3 is not in its fully lowered position.
  • the electronic control unit 50 is connected to a speed sensor 21 that issues a speed signal representative of the speed of the wheeled vehicle 1.
  • the electronic control unit is configured to issue an alarm when the speed signal indicates that the vehicle speed is above a speed threshold and simultaneously the pressure signal indicates that the pressure in the main conduit 10 is above a second pressure threshold P2.
  • the second pressure threshold P2 can be equal to the first pressure threshold PI or be higher than the first pressure threshold PI.
  • the speed threshold is e.g. a few kilometers per hour, preferably 12 k /h, more preferably 8 km/h, even more preferably 6 km/h and most preferably 4 km/h.
  • the electronic control unit 50 is configured to slow down the wheeled vehicle 1 to a halt when an alarm is issued on the basis of the vehicle speed.
  • This combination of conditions ensures that an alarm is issued or driving of the wheeled vehicle 1 is prevented when the tipper body 3 is not in its fully lowered position.
  • driving with a raised tipper body is prevented by an alarm or by the controller 50 bring the wheeled vehicle to a stop.
  • the control valve 13 is configured such that it is in its closed position when it does not receive any electrical power and is in its open position when it is electrically powered.
  • the pressure sensor 11 is in an embodiment a pressure indicator that it provides a pressure signal only when the measured pressure is below a set pressure.
  • the indicator issues no pressure signal when the measured pressure is below the set pressure and the indicator issues a pressure signal when the measured pressure is above the set pressure .
  • the set pressure corresponds to the first pressure threshold PI and the pressure threshold PI is selected to be slightly below the pressure that is required to obtain lift for the tipper body 3.
  • the pressure required to attend if the tipper body 3 can either be calculated, simulated or tested.
  • and alarm can be delayed by an operator pressing a button within a given time span.
  • an alarm can be suppressed to a lower sound level or less intrusive optical signal by an operator pressing a button within a given time span.
  • Alarms can be issued in the form of sounds or indicators or light signals or a combination thereof. Alarms can be graded, starting off with a lower alarm level increasing to higher alarm levels .
  • Fig. 3 shows another embodiment of a wheeled vehicle 1, in the form of a dump truck.
  • structures and features that are the same or similar to corresponding structures and features previously described or shown herein are denoted by the same reference numeral as previously used for simplicity.
  • Fig. 3 is essentially identical to the embodiment of Fig. 1, except for the feature that the tipper body 3 is pivotally mounted to the chassis 2 of the dump truck .
  • Fig. 4 shows the electronic control system of the embodiment of Fig. 3, which is essentially identical to the electronic control system of Fig.2 except that there is no quick coupling in the main conduit 10, since there is no need for decoupling the hydraulic cylinder 6.
  • the control valve 13 is shown in its closed position, i.e. in the position that the control valve 13 has when the pressure in the main conduit is above the first pressure threshold PI.
  • control valve 13 is an on/off valve In an embodiment the control valve 13 is a pneumatically controlled control valve. In an embodiment the control valve 13 is a hydraulically controlled control valve. In an embodiment the control valve 13 is an electronically controlled control valve. In an embodiment the control valve 13 is a magnetic valve. In an embodiment the control valve 13 is a drain valve.
  • the pressure sensor issues a pressure signal that is representative of the pressure level in the main conduit, and the controller 50 is configured to open said drain valve 13 when the pressure signal indicates that the pressure in said main conduit is above the first pressure threshold PI .
  • Fig. 5 shows another embodiment of the control system of the wheeled vehicle shown in Fig. 1
  • structures and features that are the same or similar to corresponding structures and features previously described or shown herein are denoted by the same reference numeral as previously used for simplicity.
  • Fig. 5 is essentially identical to the embodiment of Figs. 1 and 2, except for the feature that the control valve 13 is a hydraulically controlled pressure release valve.
  • the hydraulic pressure in the main conduit 10 is communicated via a hydraulic signal conduit 22 either directly or as shown via the drain conduit 12 to the control valve 13.
  • the control valve 13 moves to its
  • a switch or sensor 24 associated with the hydraulically controlled valve 13 sends a signal to controller 50 with information on the position of the control valve 13.
  • the control valve 13 is shown in its open position, i.e. the position that control valve 13 has when the pressure in main conduit 10 is below the first pressure threshold PI.
  • drain conduit 12 is directly connected said main conduit 10 said tank 7.
  • the hydraulic medium is hydraulic oil.
  • controller operates hydraulically, pneumatically, and/or electronically.
  • 03030-PCT exclude a plurality.
  • a single processor or other unit may fulfill the functions of several items recited in the claims.
  • the mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention concerne un véhicule à roues (1) qui comprend un corps de benne basculante (3) monté sur châssis et un vérin hydraulique (6) disposé entre le châssis (2) et le corps de benne basculante (3) pour fournir une levée du corps de benne basculante (3) en fournissant un milieu hydraulique sous pression au vérin hydraulique (6), un réservoir pour un milieu hydraulique (7), une pompe hydraulique (9) reliée à une entrée en communication fluidique avec le réservoir (7) et une sortie reliée en communication fluidique à une soupape à commande manuelle (8), un conduit principal (10) reliant en communication fluidique la soupape à commande manuelle (8) au vérin hydraulique (6), un capteur de pression (11) conçu pour émettre un signal de pression indicatif de la pression dans le conduit principal (10), un conduit de vidange (12) reliant en communication fluidique le conduit principal (10) au réservoir (7), une soupape de commande (13) commandant l'écoulement à travers le conduit de vidange (12), un dispositif de commande (50) recevant le signal de pression et relié fonctionnellement à la soupape de commande (13), le dispositif de commande (50) étant conçu pour déplacer la soupape de commande (12) vers une position ouverte lorsque le signal de pression indique que la pression dans le conduit principal (10) est inférieure à un premier seuil de pression PI, pour ainsi assurer que le corps de benne basculante retourne à sa position complètement abaissée.
PCT/DK2020/050037 2019-02-18 2020-02-17 Véhicule à roues doté d'un corps de benne basculante monté sur châssis WO2020169157A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201970104A DK180275B1 (en) 2019-02-18 2019-02-18 Wheeled vehicle with chassis mounted tipper body
DKPA201970104 2019-02-18

Publications (1)

Publication Number Publication Date
WO2020169157A1 true WO2020169157A1 (fr) 2020-08-27

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PCT/DK2020/050037 WO2020169157A1 (fr) 2019-02-18 2020-02-17 Véhicule à roues doté d'un corps de benne basculante monté sur châssis

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WO (1) WO2020169157A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375759A1 (fr) * 2001-02-06 2004-01-02 Shin Caterpillar Mitsubishi Ltd. Machine de chantier: circuit de commande hydraulique pour verin de fleche
EP2570301A1 (fr) * 2011-09-16 2013-03-20 Cargotec Finland Oy Agencement hydraulique et procédé de réduction d'un cadre de culbuteur d'un levage à crochet
US20150015054A1 (en) * 2012-03-26 2015-01-15 Hitachi Construction Machinery Co., Ltd. Transport vehicle
GB2537591A (en) * 2015-03-06 2016-10-26 Hyva Holding Bv Method and system for determining when a tipper body has been emptied
US20180111537A1 (en) * 2015-03-06 2018-04-26 Hyva Holding B.V. Method and system for operating a tipper vehicle
US20190023170A1 (en) * 2017-07-11 2019-01-24 Liebherr-Hydraulikbagger Gmbh Construction machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375759A1 (fr) * 2001-02-06 2004-01-02 Shin Caterpillar Mitsubishi Ltd. Machine de chantier: circuit de commande hydraulique pour verin de fleche
EP2570301A1 (fr) * 2011-09-16 2013-03-20 Cargotec Finland Oy Agencement hydraulique et procédé de réduction d'un cadre de culbuteur d'un levage à crochet
US20150015054A1 (en) * 2012-03-26 2015-01-15 Hitachi Construction Machinery Co., Ltd. Transport vehicle
GB2537591A (en) * 2015-03-06 2016-10-26 Hyva Holding Bv Method and system for determining when a tipper body has been emptied
US20180111537A1 (en) * 2015-03-06 2018-04-26 Hyva Holding B.V. Method and system for operating a tipper vehicle
US20190023170A1 (en) * 2017-07-11 2019-01-24 Liebherr-Hydraulikbagger Gmbh Construction machine

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DK201970104A1 (en) 2020-09-24
DK180275B1 (en) 2020-09-24

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