[go: up one dir, main page]

WO2019080992A1 - Véhicule équipé d'un mécanisme de levage rétractable - Google Patents

Véhicule équipé d'un mécanisme de levage rétractable

Info

Publication number
WO2019080992A1
WO2019080992A1 PCT/EP2017/077023 EP2017077023W WO2019080992A1 WO 2019080992 A1 WO2019080992 A1 WO 2019080992A1 EP 2017077023 W EP2017077023 W EP 2017077023W WO 2019080992 A1 WO2019080992 A1 WO 2019080992A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
ground
frame
retractable mechanism
engaging
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.)
Ceased
Application number
PCT/EP2017/077023
Other languages
English (en)
Inventor
Benedict BARRETT
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.)
Pivotor Systems Ltd
Original Assignee
Pivotor Systems Ltd
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 Pivotor Systems Ltd filed Critical Pivotor Systems Ltd
Priority to PCT/EP2017/077023 priority Critical patent/WO2019080992A1/fr
Publication of WO2019080992A1 publication Critical patent/WO2019080992A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E02F9/024—Travelling-gear, e.g. associated with slewing gears with laterally or vertically adjustable wheels or tracks

Definitions

  • the present invention relates to vehicles such as excavators, tractors, bulldozers, and any other type of motorised vehicles. More specifically, the present invention relates to a vehicle provided with a retractable lifting mechanism.
  • Vehicles such as excavators, tractors, trucks, cars, and the like may be designed to operate effectively under a range of different environmental condition.
  • the vehicle may be provided with wheels fitted with tyres or continuous tracks that facilitate movement and ensure better stability and traction when operated for example at an off-road terrain, In this way, it is possible to ensure the continuous operation of the work machine in a diverse range of work environments.
  • Vehicles provided with continuous tracks e.g. excavators, are designed to lay down a continuous flat pathway, in the form of a continuous belt, allowing the vehicle to move in the forward or rearward direction on a stable base.
  • the weight of the vehicle is distributed over a wide area, thus easing ground pressure and increasing traction to great advantage.
  • a method for facilitating such a change in the movement direction involves a change in the relative speed of the two tracks so that the vehicle veers towards the slower side.
  • An alternative method for changing the movement direction of a vehicle fitted with continuous tracks involves driving the tracks in opposite directions, thus allowing the vehicle to rotate along its length.
  • vehicles provided with wheels fitted with specialised tyres e.g. agricultural tractors, combine harvesters, cars and the like, although can be easily steered to the desired movement direction, may be fitted with tyres that do not provide sufficient surface traction to operate effectively in extreme weather conditions.
  • tyres e.g. agricultural tractors, combine harvesters, cars and the like
  • the ground surface may get slippery causing the wheels of the vehicle to lose traction with the ground surface, leading to the vehicle being stranded and unable to move in any direction.
  • another vehicle may be used to tow the stranded vehicle to a safe ground area.
  • the use of another vehicle may not always be an option and may involve long delays.
  • a vehicle is provided.
  • the vehicle may be an excavator, a tractor, a bulldozer, a truck, a car, and the like.
  • the vehicle comprises a frame, means for supporting the frame for movement along a ground surface on a selected path and a vehicle body positioned on top the frame.
  • the means for supporting the frame may be provided at opposite sides of the frame and may be in the form of wheels mounted on either side of the frame, continuous tracks, and the like.
  • the vehicle is provided with at least one retractable mechanism attached to the underside of the frame or the vehicle body by attachment means, e.g.
  • the retractable mechanism is configured for actuating at least one ground-engagement member between at least a retracted position, in which retracted position the ground-engaging member is positioned at a first distance from the ground surface, and a ground-engaging position, in which ground-engaging position the ground- engagement member is in contact with the ground surface.
  • the vehicle comprises control means for at least controlling, on the basis of commands received from an operator, the actuation of the ground-engagement member between at least the retracted and ground- engaging positions.
  • the control means may be in the form of mechanical control means such as levers and the like.
  • the control means may be in the form of electronic control means and/or electro-mechanically control means that may be provided with a processor running an associated software configured based on commands received from the operator for generating control signals that control the different operations of the work machine, e.g. the operation of the retractable mechanism, the steering, engine, and the like.
  • the control means may be part of the control unit provided in the vehicle body of the work machine, which is used by the operator to control the different functions of the vehicle.
  • the control means may be part of a control unit that is configured for remotely operating the vehicle by remotely communicating command signals to a vehicle on-board computer that is configured for executing the desired vehicle operations, e.g. steering the vehicle in the desired direction, operating the retractable mechanism, rotating the vehicle, and the like.
  • the control means may be operatively connected to a range of monitoring devices positioned at predetermined locations on the vehicle, which are configured for providing information to the operator of the vehicle on range of vehicle parameters such as the lift distance of the vehicle from the ground surface, the orientation of the vehicle when rotated, the height of the retractable mechanism, and the like.
  • the control means may be configured for processing the information received from the monitoring systems and accordingly provide information to the operator on the action perform.
  • the monitor system may warn the operator of an obstacle preventing the rotation of the vehicle, reporting the stability of the vehicle during the lifting.
  • the monitoring systems may be in the form of sensors or cameras positioned at predetermined location on the vehicle, which are configured for transmitting information to the control means for further processing.
  • the at least one ground- engaging member comprises a first part that is arranged for engaging with the ground surface when the ground-engaging member is in the ground-engaging position, and a second part being rotatably movable relative to the first part.
  • the vehicle can be steered in a desired direction while maintaining an improved stability.
  • the steering can be achieved by imparting a rotating movement on the second part of the ground-engaging element, which rotates the second part relative to the stationary first part.
  • the rotating movement can be affected by means of a motor, which when activated, may be configured for rotating the second part relative to the first part so that the vehicle is steered in the desired direction.
  • the change in the movement direction may be affected without the need of executing the complex set of manoeuvres of the prior art solutions.
  • the ground-engaging member may be used to change the movement direction of vehicle that have been stranded due to the loss of traction.
  • the ground engagement element can be positioned in the ground-engaging position and the second part can be rotated relative to the first part so as to change the orientation of the work machine. In this way, it may be possible for the wheels of the work machine to regain traction by coming in contact with fresh ground surface.
  • the at least one retractable mechanism when in the ground-engaging position, is further operated by the control means to a frame-lifting position, in which frame-lifting position the frame is lifted by the retractable mechanism to a predetermine lift distance from the ground surface.
  • the retractable mechanism when in the ground-engagement position, may be configured for exerting a lifting force by pushing against the ground-engagement member that is in firm contact with the ground.
  • the vehicle comprises a motor, which is operated by the control means and configured, when activated, for rotating the frame relative to the first part of the ground-engagement member.
  • the motor may be part of the ring gear motor used for turning the vehicle body relative to the frame, when the continuous tracks or wheels of the vehicle are firmly on the ground.
  • the rotation of the frame may be affected, when the retractable mechanism is in the frame lifting position, by preventing the movement of the vehicle body of the vehicle relative to the frame.
  • the frame would rotate instead in a relative direction to the vehicle body thus allowing for a change in the movement direction of the working machine.
  • the motor may also be a separate motor that is configured for rotating the frame relative to the first part of the ground- engaging element around an axis of rotation.
  • the frame and/or vehicle body may be rotated around an axis of rotation.
  • the motor may be directly connected to the retractable mechanism, thereby allowing the rotation of the retractable mechanism around a pivot point, thus enabling the vehicle to rotate relative to the first part of the ground-engaging member.
  • the retractable mechanism comprises a slip element positioned between the first part and the second part.
  • the first part may be in the form of a platform, a disc or another desired shape and form.
  • the second part may be in the form of a disc or another desired shape. It has been found that by providing a slip element between the first and the second parts it allows the smooth movement of the second part relative to the first part, which may be configured to remain stationary. As a result, with the provision of the slip ring, the change in the movement direction of the vehicle by means of rotation can be affected in a smooth and controllable manner.
  • the first part comprises traction means removably attached to a ground-facing surface of the first part.
  • the traction means may comprise a plurality of anchor pins attached to a ground-facing surface of the first part or protrusion and the like.
  • the traction means may be attached to the ground-facing surface by means of screws, bolts, welding or any other suitable way known to the skilled person. It has been found that by providing a traction means in the form of anchor pins, protrusions or the like, the traction of the ground-engaging member with the ground surface may be significantly enhanced. The improve tractions has the effect of further enhancing the stability of the work machine in a diverse range of environment conditions and terrains, e.g. rain, muddy or slippery terrain, and the like.
  • the traction means comprise a compressible material covering at least partially the ground-facing surface of the first part.
  • the compressible material may substantially be made from rubber, foam or other materials that can be used as a cushioning layer between the ground surface and the ground-facing surface. It has been found that by providing a compressible material that offers a level of cushioning, may have the effect of preventing damage to the ground surface caused by the wheels or continuous tracks of the vehicle.
  • the first part may comprise at least one rolling element such as an eccentric idle roller, a ball or other elements. On a bulldozer, this eccentric roller or ball may be located to the rear so that most of the tracks would be lifted and steered for a moment.
  • the at least one rolling element may be in the form of a rolling block comprising a plurality of rolling elements surrounded by a continuous track.
  • the rolling block may be connected to a drive motor operatively coupled to the control means, which is arranged, when activated, for rotating the rolling elements so as to drive the continuous track along a selected path.
  • the rolling block may be independently steered by the operator via the control means and may be used in cases where the vehicle needs to be steered away from a particular location. For example, in the case of a vehicle stranded in muddy terrain, the rolling block could be operated to steer the vehicle to a safe ground surface.
  • the provision of a ground- engaging member comprising at least one rolling block may eliminate the need for a towing vehicle, thereby significantly improving the rescue operation of a vehicle.
  • the retractable mechanism comprises at least one actuating element arranged for actuating the ground-engaging member, the actuating element being attached at one end to the underside of the frame or the vehicle body and at the other end to the ground-engagement member.
  • the actuating element may be actuated by means of a pressurised fluid drive system.
  • the fluid drive system may be a hydraulic drive system, a pneumatic drive system or another type of pressurised fluid drive system.
  • the fluid drive system may be part of the existing system of the vehicle to a separate drive system operable by the control means.
  • the actuating element may be in the form of a ram- type actuator, a scissor lift, a ratchet lift, or another type of known actuators.
  • the ram-type actuator may be a hydraulic actuator provided with a piston within its cylindrical housing.
  • the ram type actuator may be configured for providing a vertical motion such as lifting the load vehicle in vertical direction.
  • the actuator may be in the form of a telescoping ram-type actuator comprising a series of rams installed in an assembly of telescopic design. In telescoping ram-ty actuators, each ram is hollow except the last and smallest ram.
  • Each ram will act as cylindrical housing for adjacent smaller ram and complete ram assembly will be contained in a cylindrical housing as shown in figure.
  • the Largest diameter section is termed as barrel or main of the telescopic cylinder and smallest diameter section is termed as plunger or smallest stage of the telescopic cylinder and rest diameter section will be termed as stage of the telescopic cylinder.
  • the at least one retractable mechanism comprises guiding means for guiding and supporting the actuating element when actuating the ground-engaging member.
  • the guiding means may be in the form of guiding tube attached at one end to the ground-engaging member.
  • the guiding means may be configured for reducing the side-way movement of the actuating element during the lifting or rotation of the vehicle
  • the retractable mechanism may comprises a plurality of actuating elements each configured for actuating a ground- engaging member.
  • the plurality of actuating elements may be configured for actuating a ground-engagement element in the form of a frame, a platform, a disc or the like.
  • the actuating elements may be operated individually or collectively to accommodate the operation of the vehicle in a diverse range of working conditions, such as uneven terrain.
  • the plurality of actuating elements may be configured for actuating a single ground-engaging member.
  • the actuating elements may be connected to single ground-engaging member, which may be in the form of a disc, a platform, a frame and the like.
  • the plurality of actuating elements may be independently operated such that the ground-engaging member may be positioned at different gradients, so as to account for uneven terrain.
  • the means for supporting the frame may comprise a plurality of wheels.
  • the means for supporting the frame may also comprise a band of continuous tracks which is driven by the plurality of wheels.
  • an excavator may be fitted with continuous tracks as previously described, which are driven by a plurality of wheels.
  • the wheels may be fitted with tires, such in a tractors.
  • the wheels may be driven by an engine fitted on the vehicle and operated by the operator by means of the control means.
  • the retractable mechanism is mounted on the frame and/or the vehicle body such that when in the frame lifting position it balances the weight of the vehicle.
  • the at least one retractable mechanism may be mounted at a location approximately at the centre of gravity of the vehicle.
  • the stability of the vehicle under different working conditions may be enhanced.
  • the actuating elements may be mounted in a predetermined configuration to maintain the balance of the vehicle when lifted.
  • the vehicle may comprise at least a second retractable mechanism mounted on the underside of the frame at a location outside the centre of gravity of the vehicle.
  • a second retractable mechanism may be mounted at another location on the frame, e.g. closer to the back or the front of the vehicle.
  • the vehicle can be any type of vehicles that can be fitted with wheels or continuous tracks and may include but not limited to excavators, bulldozers, tractors, off-road vehicles, trucks, cars, and the like.
  • the retractable mechanism may be provided in other forms.
  • the retractable mechanism may be provided in the form of an inflatable/deflatable device e.g. a specially constructing balloon, wherein the positioning of the ground-engagement member in the different position is achieved by inflating and deflating the device.
  • the inflatable/deflatable device may connected to a fluid drive system e.g. hydraulic or pneumatic drive system, that is configured for inflating and deflating the device according to commands received by the operator.
  • the retractable mechanism may be in the form of an outrigger stabilizer, which is configured for operating the ground-engaging member the retracted and ground-engaging positions, and for accordingly lifting the vehicle substantially of the ground so that it can be rotated.
  • the outrigger stabilizer may be connected to a fluid drive system e.g. hydraulic or pneumatic drive system, for moving the ground-engagement element between the retracted and ground-engaging positions, and for accordingly lifting the vehicle substantially of the ground so that it can be rotated.
  • a fluid drive system e.g. hydraulic or pneumatic drive system
  • Figure 1 shows an example of a vehicle in the form of an excavator with the retractable mechanism shown in the retracted position according to embodiments of the present invention.
  • Figures 2a and 2b show the vehicle of Figure 1 in the frame-lifting positioned in respectively a starting position and a rotated position.
  • Figure 3 and 4 show an example of the retractable mechanism according to embodiments of the present invention.
  • Figure 5 shows a top view of the retractable mechanism of Figures 3 and 4.
  • Figure 6 shows a top view of an example of a ground-engaging member according to embodiments of the present invention.
  • Figure 7 shows a top view of an example of a guiding plate according to embodiments of the present invention.
  • Figure 8 shows a bottom view of an exemplified underside of a vehicle fitted with continuous tracks according to embodiments of the present invention.
  • Figure 9 shows a bottom view of an exemplified underside of a vehicle fitted with the retractable mechanism according to embodiments of the present invention.
  • Figures 10a and 1 1 b show an exemplified vehicle in respectively the starting and rotated position, which is fitted with a retractable mechanism provided with a plurality of actuating elements according to embodiments of the present invention.
  • Figure 1 1 shows a bottom view of the underside of the vehicle shown in Figures 10a and 10b.
  • Figures 12a and 12b show an exemplified vehicle fitted with a retractable mechanism that is in the form of a scissor lift respectively in the starting position and rotated position according to embodiments of the present invention.
  • Figure 13 shows a bottom view of an exemplified vehicle fitted with a retractable mechanism provided with a plurality of actuating mechanism attached to a ground-engaging member in the form of a frame according to embodiments of the present invention.
  • Figure 14 shows a bottom view of an exemplified vehicle provided with wheels, such as a tractor, that is fitted with retractable mechanism operated by a plurality of actuating mechanism, where the ground-engagement member comprises rolling blocks according to embodiments of the present invention.
  • Figure 15 shows a perspective view of the exemplified rolling blocks shown in Figure
  • vehicle encompasses all motorised vehicles, such as excavators, trucks, cars, remote controlled vehicles, tractors, and the like.
  • vehicle body encompasses all types of vehicle bodies or houses that can be attached to the frame 2 of the vehicle.
  • vehicle body encompasses the well-known excavator superstructures positioned on top of the frame, the body of a tractor or a bulldozer, the body of the car and the like.
  • Figure 1 shows a vehicle 100 in the form of a known excavator positioned on a ground surface 4, and provided with a vehicle body 1 , a frame 2 and means for supporting the frame 3, which in this case are shown to be in the form of continuous tracks.
  • the excavator 100 may be further provided with an engine, a hydraulic system, control unit, and all necessary components to ensure correct operation.
  • the excavator 100 may be further provided with a motor 5, which may be part of the ring gear system used in the excavator, which is configured for rotating the vehicle body 1 relative to the frame 2.
  • the excavator is provided with a retractable mechanism 6, which is attached by connection means at one end to the underside of the frame 2 or the vehicle body 1 and at an opposing end to at least one ground-engaging member 7.
  • the retractable mechanism 6 is configured for actuating the at least one ground-engagement member 7 between at least a retracted position, in which retracted position the ground-engaging member 7 is positioned at a first distance from the ground surface, as shown in Figure 1 , and a ground-engaging position, in which ground-engaging position the ground-engagement member 7 s in contact with the ground surface, as shown in Figure 2.
  • the operation of the retractable mechanism 6 may be controlled by control means configured for receiving commands from an operator.
  • the operator may control the operation of the retractable mechanism 6 via buttons or levers provided on a control unit dashboard in the vehicle body. Also, the operator may operate the retractable mechanism 6 by selecting applicable commands from a menu presented on a touch screen positioned on the control unit dashboard.
  • the control means on the basis of the commands issued by the operator, may control the operation of a fluid drive system connected to the retractable mechanism 6 for actuating the ground-engaging member 7.
  • the fluid drive system may be hydraulic, pneumatic or any other suitable drive system.
  • the fluid drive system may be part of the hydraulic system of the excavator used for operating the excavator arm.
  • the fluid drive system may a separate system provided on the vehicle that is operated by the control means to actuate the retractable mechanism
  • the control means on the basis of a command issued by the operator to actuate the ground-engaging member to the ground-engaging position, may operate the hydraulic system of the excavator such that the retractable mechanism 6 is actuated until the ground-engaging member reaches the desired position.
  • the control means may be operatively connected to a range of monitoring devices positioned at predetermined locations on the vehicle, which are configured for providing information to the operator of the vehicle on range of vehicle parameters such as the lift distance of the vehicle from the ground surface, the orientation of the vehicle when rotated, the height of the retractable mechanism, and the like.
  • the control means may be configured for processing the information received from the monitoring systems and accordingly provide information to the operator on the action perform.
  • the monitor system may warn the operator of an obstacle preventing the rotation of the vehicle, reporting the stability of the vehicle during the lifting.
  • the monitoring systems may be in the form of sensors or cameras positioned at predetermined location on the vehicle, which are configured for transmitting information to the control means for further processing.
  • Figure 2a shows the exemplified excavator 100 at the frame-lifting position.
  • the vehicle 100 may be lifted at a predetermined distance from the ground surface 4. This may be achieved by operating the retractable mechanism 6, when in the ground-engaging position, to exert a lifting force by pushing against the ground- engagement member 7 that is in firm contact with the ground, thereby lifting the vehicle 100 off the ground surface 4.
  • Figure 2b shows the vehicle 100 rotated with respect to the ground-engagement member 7 from a starting position, shown in Figure 1 a, to a rotated position, show in Figure 2b, thus facilitating the change in the movement direction.
  • the rotation of the vehicle 100 may be achieved in different ways. For example, in an excavator, the rotation may be facilitated by the ring gear motor 5. In this case the turning of the frame 2 may be affected, when the retractable mechanism 6 is in the frame lifting position, by preventing the movement of the vehicle body 1 of the vehicle relative to the frame 2. For example, the movement of the vehicle body 1 relative to frame 2 may be prevented by placing the bucket of the excavator 100 firmly on the ground, while operating the ring gear.
  • the vehicle body 1 is maintained stationary, while the frame is rotated in the desired direction around an axis 24.
  • Another way of preventing the movement of the vehicle body 1 relative to the frame 2, when operating the ring gear motor 5, may be by locking the movement of the vehicle body to the frame 2.
  • the motor 5 may also be a separate motor that is configured for rotating the frame 2 relative to the first part 7a of the ground-engaging member 7 around an axis of rotation.
  • the frame 2 and/or vehicle body 1 may be rotated around an axis of rotation.
  • the motor 5 may be configured for directly turning the retractable mechanism 6 around a pivot point, thus enabling the vehicle to rotate relative to the first part 7a of the ground-engaging member 7.
  • Figure 3a and 3b show an example of a retractable mechanism 6 configured for actuating the ground-engagement member 7 between the retracted and ground-engaging positions.
  • Figure 3a shows the retractable mechanism 6 in the ground-engaging position.
  • the retractable mechanism 6 may be provided with a known actuating element, which may for example comprise a cylinder 6c and retractable rod 6d configured for moving within the cylinder 6c by means of a fluid drive system for actuating the ground-engaging member 7.
  • the actuating element cylinder 6c is attached by means of actuating connection means 8 to the underside of the frame 2 or the vehicle body 1 , while the free end of the actuating rod 6d is attached at a connection point 7c by means of connection means 7d to the ground- engaging member 7.
  • the actuating connection means 8 and connection means 7d may be of any known form, e.g. screws, clamping means, bolts, welding, and the like.
  • the ground-engaging member 7 may be provided with a first part 7a and a second part 7b, which may be positioned on top of the first part 7a.
  • the second part 7b may be able to rotate relatively to the first part 7a.
  • a slip element may be provided between the first part 7a and second part 7b, which may allow for the second part 7b to be rotated while maintaining the first part 7a stationary.
  • the actuating rod 6d may be connected to the second part 7b of the ground-engaging member 7.
  • the retractable mechanism 6 may also be rotated relative to the first part 7a of the ground-engaging member 7.
  • the slip element may be placed at a different location.
  • the slip element may be placed at the actuating connection means 8, which connect the retractable mechanism 6 to the frame 2 or the vehicle body 1 .
  • the retractable mechanism may be provided with guiding means for guiding and supporting the actuating element, and may prevent the side- way movement when lifting the weight of the vehicle.
  • the guiding means may comprise a guide tube 6a, which may be attached to the ground-engaging member 7, and optionally a number of guide plates 6b positioned at different locations on the guide tube 6a.
  • the retractable mechanism 6 may be in the form of a ram-type actuator, a scissor lift, a ratchet lift, or another type of known actuators.
  • the ram-type actuator may be a hydraulic actuator provided with a piston within its cylindrical housing.
  • the ram type actuator may be configured for providing a vertical motion such as lifting the load vehicle in vertical direction.
  • the actuator may be in the form of a telescoping ram-type actuator comprising a series of rams installed in an assembly of telescopic design. In telescoping ram-ty actuators, each ram is hollow except the last and smallest ram.
  • Each ram will act as cylindrical housing for adjacent smaller ram and complete ram assembly will be contained in a cylindrical housing.
  • the largest diameter section is termed as barrel or main of the telescopic cylinder and smallest diameter section is termed as plunger or smallest stage of the telescopic cylinder and rest diameter section will be termed as stage of the telescopic cylinder.
  • Figures 4a and 4b show a more detail view of the retractable mechanism 6 and the ground engagement member 7 and their associated components.
  • the first part 7a and second part 7b may have a disc shape.
  • the first part 7a may be in the form of a platform while the second part 7b may be in the form of a disc.
  • the form and shape of the first and second parts 7a and 7b may be adapted according to the operational requirements of the working machine. For example, in muddy terrain the first and second parts may be of different shape and form. Accordingly the dimensions of the first and second parts 7a and 7b can be adapted based on the size and weight of the vehicle.
  • Figure 5 shows a top view of the retractable mechanism 6 and the ground-engaging member 7.
  • the guide tube 6a may be attached to the second part 7b of the ground-engaging member 7 by guiding connection means 7e, e.g. screws, bolts, clamps, welding, and the like.
  • Figure 6 shows a top view of the ground-engaging member 7, showing the second part 7b being positioned on top of the first part 7a. As shown, the second part 7b may be provided with a connection point 7c for connecting the free end of the actuating rod 6d.
  • Figure 8 shows an example of the underside of a known excavator.
  • the excavator 100 may be provided with the frame 2 and a set of continuous tracks 3 positioned on each side of the frame 2.
  • the frame 2 also may be provided with a central hole 9, which is normally provided for the ring gear motor.
  • the retractable mechanism 6 with the ground engagement member 7 can be fitted on the location of the central hole 9.
  • the central hole 9 may define the centre of gravity of the vehicle. Therefore by positioning the retractable mechanism 7 at the location of the central hole 9, it is ensured that the weight of the vehicle, when lifted, is correctly balanced.
  • Figure 10a and 10b show a vehicle 200 according to embodiment of the present invention.
  • the retractable mechanism 6 comprises a number of actuating elements 1 1 , which may be of similar configuration to the ones presented in previous embodiments, which are attached at one end to the frame 2 by connection means 10, and at the one end to a ground-engaging member 12, which has a similar configuration to the ground-engagement member 6 presented in previous embodiments.
  • the frame connection means 10 may be provided on the vehicle body 1 or the frame 2, depending on the vehicle and working conditions.
  • the vehicle may be rotated around an axis 24 relative to the ground-engagement member 12, to facilitate the change in the movement direction.
  • Figure 1 1 shows an example of the underside of the vehicle 200 presented in Figure
  • frame connection means 10 may be configured for attaching by attachment means, e.g. screws, bolts, welding and the like, the actuating element 1 1 to the frame 2.
  • the ground-engaging member 12 may be connected to the actuating elements 1 1 with the connection means 10.
  • Figure 1 1 it is shown in Figure 1 1 that the actuating elements 1 1 are connected to the frame 2 by means of continuous bars running the length of the frame 2, it is also possible that each actuating element is connected to frame 2 or the vehicle body 1 depending on the desired configuration.
  • Figure 12a and 12b show a vehicle 300 according to embodiments of the present invention.
  • Figure 13 shows a bottom view of the underside of a vehicle 400 according to embodiments of the present invention.
  • the retractable mechanism 6 may be provided with a number of actuating elements 17, which may be of similar configuration to any one of the actuating elements presented in previous embodiments.
  • the actuating elements 17 may be connected to a ground-engaging member 18, which may be in the form of a frame or a platform.
  • Figure 14 shows a bottom view of the underside of a vehicle 500 according to embodiments of the present invention.
  • the vehicle is provided with means for supporting the frame in the form of wheels 3.
  • a ground- engaging member 19 may be provided in the form of a frame, or in any other suitable form presented in connection to previous embodiments, which is actuated between the retracted and ground-engaging position by a retractable mechanism 6 comprising a plurality of actuating elements 21 .
  • the frame 19 may be provided with at least one rolling block 20, which is controllable via the control means.
  • the rolling block 20 may be connected to a drive motor operatively coupled to the control means, which is arranged, when activated, for rotating the rolling elements 22 so as to drive the continuous track 23 along a selected path, as shown in Figure 15.
  • the rolling block 20 may be independently steered by the control means and may be used in cases where the vehicle needs to be steered away from a particular location. For example, in the case of a vehicle being stranded in muddy terrain, the rolling block could be operated to steer the vehicle to a safe ground surface.
  • the provision of a ground- engaging member comprising at least one rolling block 20 may eliminate the need for a towing vehicle, thereby significantly improving the rescue operation of a vehicle.
  • the rolling blocks may be positioned at different locations along the ground-engagement member 19, so as to ensure that the weight of the vehicle is correctly balanced. For example, this might be advantageous when the vehicle is fitted with extra equipment, resulting in a change of the original centre of gravity and thus necessitating the movement of the rolling blocks.
  • the dimensions, type and mounting position of the ground- engaging member can be adapted according to the operation requirements of the vehicle.
  • the number, type and mounting position of the actuating elements of the retractable mechanism may be adapted to the vehicle type and operation requirements. All elements of the present invention presented in the different embodiments are interchangeable and can be substituted and/or combined according to the vehicle needs.
  • the retractable mechanism 6 may be provided in other forms known to the skilled person that would fulfil the desired purpose.
  • the retractable mechanism 6 may be provided in the form of an inflatable/deflatable device e.g. a specially constructing balloon, wherein the positioning of the ground-engagement member 7 in the different position is achieved by inflating and deflating the device.
  • the inflatable/deflatable device may connected to a fluid drive system e.g. hydraulic or pneumatic drive system, that is configured for inflating and deflating the device according to commands received by the operator.
  • the retractable mechanism 6 may be in the form of an outrigger stabilizer, which is configured for operating the ground-engaging member 7 between the retracted and ground-engaging positions, and for accordingly lifting the vehicle substantially of the ground so that it can be rotated.
  • the outrigger stabilizer may be connected to a fluid drive system e.g. hydraulic or pneumatic drive system, for moving the ground- engagement element between the retracted and ground-engaging positions, and for accordingly lifting the vehicle substantially of the ground so that it can be rotated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

La présente invention concerne un véhicule (100, 200, 300, 500) qui est pourvu d'au moins un mécanisme rétractable (6) fixé par des moyens de connexion (7e, 7d, 8, 10, 11) au niveau d'une extrémité à la face inférieure d'un châssis (2) ou d'une carrosserie de véhicule (1) et à une extrémité à un élément de mise en prise avec le sol (7, 12, 13, 18, 19). Le mécanisme rétractable (6) est configuré pour actionner ledit élément de mise en prise avec le sol (7, 12, 13, 18, 19) entre au moins une position rétractée, dans laquelle l'élément de mise en prise avec le sol (7, 12, 13, 18, 19) est positionné à une première distance de la surface de sol (4), et une position de mise en prise avec le sol, dans laquelle l'élément de mise en prise avec le sol (7, 12, 13, 18, 19) est en contact avec la surface de sol (4). Le véhicule comprend des moyens de commande destinés au moins à commander, sur la base d'instructions reçues de la part d'un opérateur, l'actionnement de l'élément de mise en prise avec le sol (7, 12, 13, 18 19) entre au moins les positions rétractée et en prise avec le sol.
PCT/EP2017/077023 2017-10-23 2017-10-23 Véhicule équipé d'un mécanisme de levage rétractable Ceased WO2019080992A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/077023 WO2019080992A1 (fr) 2017-10-23 2017-10-23 Véhicule équipé d'un mécanisme de levage rétractable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/077023 WO2019080992A1 (fr) 2017-10-23 2017-10-23 Véhicule équipé d'un mécanisme de levage rétractable

Publications (1)

Publication Number Publication Date
WO2019080992A1 true WO2019080992A1 (fr) 2019-05-02

Family

ID=60421732

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/077023 Ceased WO2019080992A1 (fr) 2017-10-23 2017-10-23 Véhicule équipé d'un mécanisme de levage rétractable

Country Status (1)

Country Link
WO (1) WO2019080992A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114604782A (zh) * 2022-02-23 2022-06-10 日照海洋文旅建设发展有限公司 一种市政工程建设用材料起吊机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1653247A (en) * 1925-08-14 1927-12-20 Charles B Zollinger Shovel or crane
US3235280A (en) * 1963-06-05 1966-02-15 Moustgaard Aage Arrangement for tractors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1653247A (en) * 1925-08-14 1927-12-20 Charles B Zollinger Shovel or crane
US3235280A (en) * 1963-06-05 1966-02-15 Moustgaard Aage Arrangement for tractors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114604782A (zh) * 2022-02-23 2022-06-10 日照海洋文旅建设发展有限公司 一种市政工程建设用材料起吊机

Similar Documents

Publication Publication Date Title
AU2012321863B2 (en) Movable type ladder device for work vehicle
CN112119004B (zh) 作业车
KR102804817B1 (ko) 작업 차량용의 브레이크 시스템
AU2018393126B2 (en) Emergency stop apparatus and method for construction machine
EP1714854B1 (fr) Véhicule lourd pour le broyage de sol avec des roues arrières escamotables et dirigeables
KR19990082371A (ko) 육상 차량
JP2020001442A (ja) 作業車
US4285627A (en) Undercarriage for adverse terrain vehicle
US4210219A (en) Undercarriage for adverse terrain vehicle
GB1576166A (en) Undercarriage for adverse terrain vehicle
WO2019080992A1 (fr) Véhicule équipé d'un mécanisme de levage rétractable
US4278140A (en) Undercarriage for adverse terrain vehicle
US11052715B2 (en) Loader suspension
JP6937725B2 (ja) 作業車
KR20220028233A (ko) 건설 기계
US20220024531A1 (en) Lifting Device For The Translational Progressive Movement Of A Motor Vehicle
JP6592255B2 (ja) 作業車
JP4501425B2 (ja) トラクタのクローラ装置
US12397867B2 (en) Work machine
JP7645717B2 (ja) 作業車
US4272221A (en) Undercarriage for adverse terrain vehicles
JP2025100216A (ja) 作業機
JP2025100220A (ja) 作業機
JP2025100218A (ja) 作業機
JP2025100217A (ja) 農業機械

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17801605

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17801605

Country of ref document: EP

Kind code of ref document: A1