Abstract: The present invention provides an ore supply apparatus and an ore supply method which are capable of securing a stable ore-supply amount. The ore supply apparatus according to the present invention includes a storage unit 21 configured to store an ore slurry, a piping unit 22 configured to discharge the ore slurry from the storage unit 21, a control valve 30 provided to the piping unit 22 and configured to change the cross-sectional area of a flow path of the piping unit 22 by changing the form of a tubular valve body 34 made of elastomer, and a sealing device 24 disposed inside the control valve 30 and configured to completely seal the flow path when the control valve 30 is adjusted so as to keep the cross-sectional area of the flow path to a minimum.

Abstract: The present invention provides an ore supply apparatus and an ore supply method which are capable of securing a stable ore-supply amount. The ore supply apparatus 20 according to the present invention includes a storage unit 21 configured to store an ore slurry, a piping unit 22 configured to discharge the ore slurry from the storage unit 21, a control valve provided to the piping unit 22 and configured to change the cross-sectional area of a flow path of the piping unit 22, and a buffer container 60 provided with an outlet 64 and configured to once accommodate the ore slurry discharged from the piping unit 22 and then supply said ore slurry into a concentrator from the outlet 64 at a predetermined flow rate.

Abstract: A portable containment system has a flexible liner sheet and a plurality of leg assemblies attached to the edge portions of the liner sheet. Each leg assembly consists of two legs connected by a fabric hinge and movable from a collapsed transport position to an upright operating position where the legs slope upward toward each other to form a triangle. The edge portions of the liner sheet are attached to the top of the triangle. The bottom ends of the leg assemblies are connected to a flexible leg sheet such that the leg assemblies are evenly spaced. Moving all the leg assemblies to the operating position supports the edge portions of the liner sheet in a raised position sloping upward from the surface at an angle less than about 75 degrees, such that a containment area is formed inside the sloping edge portions of the liner sheet.

Abstract: A system for the transfer, storage and distribution of intermodal containers of a plurality of lengths. The system comprises a first storage area comprising a first plurality of shafts arranged in a grid pattern along a first and second axis, a plurality of gantry cranes slidably disposed along the first axis and extending beyond the storage area, a roof structure disposed at a distance above the plurality of shafts, and a plurality of overhead cranes slidably associated with the plurality of tracks. The shafts disposed in rows along the first axis are configured to store intermodal containers of a plurality of lengths. The shafts disposed in a given row along the second axis are configured to store intermodal containers of a corresponding length.

Abstract: A temporary storage device transfers an article in different positions to and from an overhead travelling vehicle system and a second transport system, and transfers an article to and from an article transfer position outside the temporary storage device. The temporary storage device includes a local carrier including a hoist, travel rails of the local carrier below a travel rail of the overhead travelling vehicle system, passing directly above an article transfer position, and a slide rack below the travel rails of the local carrier, slidable between a portion directly above the transfer position and a second position in which an article can be transferred to and from the second transport system, the second position being different from the portion directly above the transfer position in a direction perpendicular or substantially perpendicular to the travel rails of the local carrier in a horizontal plane.

Abstract: A technique for storage and retrieval of objects is provided. A holding structure is configured to hold the objects, and the objects are stored in the holding structure such that the objects can slide in and out of the holding structure. An elastic mechanism is at the back of the holding structure, and the elastic mechanism pushes the objects toward the front of the holding structure such that the objects are accessible at the front of the holding structure. A selector mechanism is positionable to push the objects that are adjacent to a selected object to be retrieved toward the back of the holding structure, and the selector mechanism exposes a portion of the selected object so that the selected object can be engaged at the exposed portion. A gripper is configured to engage the exposed portion of the selected object and pull the selected object from the holding structure.

Abstract: The invention discloses a regulation jig including a regulation part and a scale plate which are movably connected. The regulation part can simultaneously regulate positions of conveying rings having the same sequence, such that they are arranged into a line. The scale plate can accurately control the distance between the lines formed by the rings. The regulation jig not only can guarantee the straightness of a row of conveying rings around different conveying rollers and having the same sequence, but also can ensure that the transmission surface formed by the conveying rings for supporting and conveying the display substrates has a good flatness, in turn preventing the display substrates from deviating from its travelling direction during the transmission. As such, the regulation jig provided by the invention can efficiently and promptly regulate the positions of the conveying rings, so as to ensure the normal transmission of the display substrate.

Abstract: The present disclosure relates to a workpiece carrier for a workpiece conveying device for the transportation of workpieces, especially for heavy workpieces, having a conveyor chain for conveying the workpiece carriers by transmitting friction forces and having a guide track for guiding and supporting the conveyor chain and the workpiece carriers. The conveyor chain runs in a U-shaped guide track, wherein support surfaces extend next to the U-shaped guide track and the workpiece carriers are supported with guide rollers on said support surfaces. The workpiece carriers are equipped with a front and a rear carriage which are provided with an entrainer for engagement into the U-shaped cut-out, and wherein the entrainers are designed via a foot part with an adjustable contact force to overcome the sliding friction, with a display serving the visualization of the set contact force in accordance with the present disclosure.

Abstract: A conveying device including a circulatorily led, extensively extended conveying element that forms a conveying section with a conveying surface and a return section, a front head-end region, in which the conveying element is deflected from the conveying section into the return section in the movement direction of the conveying element, and a braking device that exerts a braking effect upon the driven conveying element. The braking device includes a braking surface that, by way of the sliding friction with the conveying element, at least partly exerts the braking effect upon the driven conveying element. The braking device is designed and arranged such that it exerts the braking effect upon the conveying element outside the front head-end region as well as outside the conveying section. The braking surface is designed in an essentially bent manner and is wrapped by a part of the conveying element.

Abstract: A power chain elongation inspecting system is provided and includes a power chain that is configured to move in a longitudinal direction and a measuring device that is configured to measure elongation of the power chain. In addition, an electronic tag attaching device is configured to mark failures on the power chain to measure the elongation of the power chain in real time and to track a failure portion of the power chain via a tag attachment.

Abstract: A conveying device with a revolvingly led, extensively extended conveying element, which forms a conveying section with a conveying surface, and a return section, which is arranged below the conveying section. The conveying element is deflected in each case in two head-end regions, which are spaced from one another along the conveying direction. A wiper device for wiping foreign objects led along on the conveying surface of the conveying element is arranged in the front head-end region, in which the conveying element is deflected from the conveying section into the return section. The wiper device includes a wiper unit with a receiving blade, which runs transversely to the conveying direction, as well as a wiper blade, which is mounted on the wiper unit and forms a flexible wiper lip projecting toward the conveying element beyond the receiving blade.

Abstract: A conveyor system with a pop-up transfer assembly for transferring articles off the end of conveyor belt having protrusions extending above the belt's outer conveying surface. The transfer assembly is cantilevered over the reversing path of the conveyor belt from a pivot. When a protrusion from the belt hits the transfer assembly, the transfer assembly pivots away from the belt about the pivot. When the protrusion is clear, the transfer assembly drops, by gravity, back to its home position proximate the belt. A bilateral transfer assembly is cantilevered in opposite directions to transfer articles off the end of one conveyor belt onto another conveyor belt that may or may not have protrusions.

Abstract: In accordance with one or more aspects of the disclosed embodiment, a system for transporting wire components during the assembly of wire bundles includes an air-operated tube network connecting a transport source station to a plurality of transport destination stations, the air-operated tube network comprising a junction coupled between the transport source station and the plurality of transport destination stations, and a system controller that includes a wire bundle assembly program, the system controller programmed to automatically transmit wire components from the source station to at least one of the transport destination stations based on the wire bundle assembly program.

Abstract: Cable robots may be used to automatically load items onto one or more surfaces in any environment. An item may be received on a carrier that is connected to tensioning actuators of a cable robot by one or more cables in tension. The actuators of the robot may be manipulated in concert to move the carrier from a first position to a second position, which may be fixed or in motion, at which the item may be expelled from the carrier. The carrier may include induction wheels and/or conveyors for receiving the item thereon and for expelling the item therefrom. The cable robot may be provided in series with a conveyor and mounted to a frame, and used to load items onto a delivery vehicle, such that the frame may be withdrawn as items are loaded.

Abstract: A paper sheet feeding apparatus according to an embodiment includes a first feeding tray 210, a pickup unit 150, a second feeding tray 310, an air blow unit 130, a status sensor 140, and a controller 100. The first feeding tray 210 and the second feeding tray 310 respectively feed a batch of sheets to the pickup unit 150. The air blow unit 130 blows air to loosen an upper part of the batch of sheets. The status sensor 140 detects sparseness value of the upper part of the batch of sheets. The controller 100 makes the batch of sheets on the first feeding tray 210 to fall on top of that of the second feeding tray 310 when switching the feeding tray in charge of feeding the sheets from the first feeding tray 210 to the second feeding tray 310.

Abstract: A sheet feeder including a driving mechanism moving a stopper, an end of the stopper in a first position being closer to a pickup roller axis than a part of a roller surface of a pickup roller, the end of the stopper in a second position being farther from the pickup roller axis than the part of the roller surface, and a movable set guide having a first surface facing in a particular direction to become farther from the roller surface, the first surface being farther from the pickup roller axis than all the roller surface when the set guide is in a third position and contacts the stopper in the first position, the first surface being closer to the pickup roller axis than the part of the roller surface when the set guide is in a fourth position and separated away from the stopper in the second position.

Abstract: There is provided with a method of manufacturing an electrostatic adsorptive belt. A portion for forming an electrode pattern on a first resin layer is irradiated with an ultraviolet laser beam. A region including the portion for forming the electrode pattern on the first resin layer is oxidated. The electrode pattern if formed on the first region layer by plating. A second resin layer is formed on a surface of the first resin layer on which the electrode pattern is formed.

Abstract: A slider moving in a sliding direction between first and second positions shifts a second path-defining member, relative to a first path-defining member, between first and second states. A pair of movable members each disposed on a corresponding side of a slider in a width direction is movable individually in the sliding direction to shift between third and fourth states. The movable members, when both in the third state, position the slider to the first position and, when both in the fourth state, position the slider to the second position. Each movable member supports a corresponding widthwise end of the slider immovably in the sliding direction and movably in the width direction. A support frame supporting the second path-defining member supports a widthwise central portion of the slider movably in the sliding direction and rotatably on a plane parallel to the sliding direction and the width direction.

Abstract: A sheet conveyer has a casing defined with first and second conveying passages and respectively having first and second curved passages. The first and second curved passages curve in opposite directions. A flap rotatably provided to a second guide member constituting a curved outside part of the first curved passage. When the flap is at a first position, the flap blocks passage from a part of the first conveying passage to the connection position, while the second conveying passage is opened to the connection position. When the flap is at the second position, the first conveying passage is opened toward the connection position and a part of the second conveying passage is blocked with respect to the connection position. A guide surface constituting an upper surface of the first curved passage is closer to the third guide member than a guide roller when the flap is at the second position.

Abstract: A sheet conveying device includes a flap pivoting between a first state to contact a first path-defining member and a second state to be separated from a first path-defining member. The first path-defining member, which faces a second path-defining member in a facing direction, includes a guide surface for guiding a sheet conveyed along a first conveying path, a contact surface positioned farther from the second path-defining member in the facing direction than the guide surface and configured to contact the flap in the first state, and an inclined surface positioned downstream of the contact surface in a conveying direction and inclined such that an upstream end thereof in the conveying direction is closer to the second path-defining member in the facing direction than a downstream end thereof. The upstream end of the inclined surface is closer to the second path-defining member in the facing direction than the contact surface.

Abstract: A medium detection mechanism includes a medium guide that holds a medium and an optical sensor including an irradiation section that emits irradiation light to the medium guide and a light receiving section that receives reflected light. An amount of received light that is received by the light receiving section from among reflected light of external light that enters the medium guide and reflected light of the irradiation light is smaller than or equal to a predetermined value.

Abstract: A sheet discriminator, which can be included in an image forming apparatus, includes a sheet loader on which a recording medium is loaded, an information detector including a light emitter to emit light to a surface of the recording medium loaded on the sheet loader and a light receiver to receive the light emitted by the light emitter and detecting information of the recording medium, a sheet distinguisher to distinguish a type of the recording medium based on the information detected by the information detector, and a detector body encasing at least the information detector therein and having an opening formed on an opposing face facing the sheet loader. The opposing face has an opening formed thereon. The opening has at least one arc-shaped side.

Abstract: A sheet width aligning device includes an elevator tray, a pair of guides, and a pinion. The pinion is rotatably supported by inserting a shaft portion into a shaft hole formed in the pinion. The shaft portion projects from the elevator tray. The sheet width aligning device is configured to move the pair of guides so as to increase or decrease the distance between the guides in operative association with the pair of racks meshed with the pinion. The sheet width aligning device includes a pressing mechanism. The pressing mechanism is provided on the back face side of the elevator tray and includes an abutment member that abuts against the pinion. The pressing mechanism separates the abutment member away from the pinion at the lower position, while abutting the abutment member against the pinion to press the pinion at the upper position.

Abstract: An image recording apparatus, including a tray configured to support a sheet; a chassis defining a first conveyer path, in which the sheet on the tray is conveyed in a first conveying direction, and a second conveyer path, through which the sheet is conveyed in a second conveying direction through a branch point to be inverted to reenter the first conveyer path through a merging point; a base member integrally formed of resin and including a guiding section to define a form of a part of the second conveyer path; a recording unit to record an image on the sheet conveyed in the first conveyer path; a drive shaft supported by the base member; and a return-conveyer roller disposed in the second conveyer path and configured to convey the sheet to be guided on the guiding section in the second conveying direction by rotation of the drive shaft, is provided.

Abstract: To make it possible to suitably deliver articles in a system that delivers articles from a supply device to a receiving device. The delivery system includes: a supply device having a supply port for supplying an article; a receiving device having a receiving port that is able to receive the article that is supplied from the supply port; and a detection unit that is capable of detecting: a first state in which the supply device and the receiving device are joined by the supply port engaging with the receiving port; a second state in which the supply device and the receiving device are close together and there is a space between the supply port and the receiving port; and a third state in which the supply device and the receiving device are separated and the space between the device is wider than in the second state.

Abstract: A sheet conveying device, including: a conveyor; a first supporter configured such that, when located at its closed position, a first surface thereof partially forms an exterior surface of the device and such that, when located at its open position, a second surface thereof supports the sheet to be supplied to the conveyor; a second supporter configured such that, when located at its closed position, a first surface thereof partially forms the exterior surface of the device and such that, when located at its open position, a second surface thereof supports the sheet output from the conveyor; and a link configured such that, when the first supporter is moved from the closed position to the open position, the link transmits a force from the first supporter to the second supporter and thereby moves the second supporter from the closed position to the open position in conjunction with the first supporter.

Abstract: A receiving device that is connected to a sheet processing device to receive a sheet comprising: a receiving port that receives the sheet discharged from a discharge port of the sheet processing device: casters that support the receiving device on a floor; and a roller that rides up a support part provided with the sheet processing device at the time of connecting the receiving device and the sheet processing device to receive a part of the weight of the receiving device on the support part, wherein when the roller rides up the support part, a part of the casters floats up from the floor, and the receiving port is positioned to the discharge port.

Abstract: There is provided a stacking apparatus capable of stably conveying and stacking sheets without occurrence of damage or buckling of the sheets in the structure of discharging the curled sheets one by one. In regard to each of a plurality of clamp guides which project toward stacking trays from conveyance means to guide sheets S, the projecting position varies in accordance with a size and an amount of stacked sheets Sa on the stack trays. The stacking tray comprises an inclined surface and a curved surface. An upper guide is located to face the inclined surface by a predetermined interval, and the upper guide is located not to face the curved surface or is located to face it by an interval larger than a predetermined interval.

Abstract: Methods and apparatuses for separating streams of interfolded sheets into individual stacks of sheets are provided. Separation of the stacks is provided by a plurality of fingers mounted to carriages that are moved into and out of openings the stream of interfolded sheets. The openings may be formed without using the force of gravity. Further, the fingers may be inserted into the openings with a motion that has a larger component in a direction parallel to the stream of interfolded sheets than in a direction perpendicular to the stream of interfolded sheets. Further, the components that separate the stacks also may transport the stacks and directly transfer the stacks to downstream components.

Abstract: The present invention is a tape dispenser which comprises a base with chamber formed in it which comprises guide grooves formed on each respective side walls of the chamber, a blade seat with blade formed on one end of the base, a central shaft having end portions to be fitted into the guide groove also with limit members formed on the end portions, and at least two tape wheels each having a sleeve to be engaged with central shaft and a positioning structure formed thereon. Tape wheels can be sleeved on the central shaft smoothly and replaced easily without any problem. Users can use a single piece of a tape dispenser for tapes in various different dimension.

Abstract: An embodiment of the invention is directed to a sheet, wherein a conveying direction of the sheet relative to a sheet conveying apparatus is determined; the sheet is formed with a crease along which to fold the sheet and that is smaller than or equal to 90 ?M in depth and extends in a direction that crosses the conveying direction; and a grammage of the sheet is in a range of 200 to 370 g/m2.

Abstract: A hitch attachment system can include a hitch attachment configured to be secured to a vehicle hitch and one or more implements configured to be attached to a vehicle hitch. For example, the implement may be a wire rack, a vise stand, or some other implement. A securing mechanism can be configured to apply pressure transverse to a direction of sliding motion of the hitch attachment relative to the implement to inhibit movement of the implement relative to the hitch. The hitch attachment may include a stabilizing system that is configured to move a pressure member to apply pressure to an inwardly-facing surface of the hollow tubing to inhibit movement of the hitch attachment relative to the hitch.

Abstract: A coil tubing spool handling device includes a base structure and a vertical support structure. The base structure includes an upper surface, a lower surface, and a rocker portion with a curved surface to allow the base structure to rotate along the curved surface. The vertical support structure is connected to the base structure proximate the rocker portion, and extends substantially perpendicular to the upper surface. The vertical support structure and the upper surface can receive a coil tubing spool. A center of rotation of the rocker portion is located in a forward location relative to a center of gravity of the device when the vertical support structure and upper surface receive the coil tubing spool. The relative positions of the center of gravity and the center of rotation bias the handling device to rotate from a vertical position to a horizontal position.

Abstract: A winding core with improved beam and hoop strength and diminished friability and method for manufacturing such a core are provided, the winding core comprising: an extruded wood fiber core member; and at least one preformed paper shell member having a split seam parallel to its major axis, the shell being adhered to an exterior surface of the extruded wood fiber core member.

Abstract: The invention is aimed to improve control of wear and tear of the elevators in an elevator group comprising a plurality of elevators and at least one group control unit. The actual usage of each elevator is recorded, and the group control unit executes at least one allocation algorithm for selecting which elevator of the elevator group is used to serve a call. The allocation algorithm is configured to compare the actual usage of at least two elevators against respective target usages and to select the elevator having its actual usage most deviating from the target usage to serve an outstanding call. With the invention, the wear and tear of elevators may be balanced, or certain elevators may be set to reach the end of the maintenance period sooner.

Abstract: Embodiments are directed to establishing, by at least one panel of an elevator system, communication with a user device comprising at least one of a cell phone, a smartphone, a PDA, and a laptop computer, receiving, by the at least one panel, an identifier associated with the user device based on the established communication, receiving, by the at least one panel, a selection of a destination floor, and associating, by the at least one panel, the identifier with the destination floor.

Abstract: The present invention discloses a method and a system for generating destination calls for an elevator system, wherein a passenger can give personal destination calls with his/her terminal device as well as on the basis of identification of the person in at least one identification point. A passenger is identified at an identification point, on the basis of which the home floor of the passenger is determined and a destination call to the home floor is generated for the elevator system if the passenger does not have a valid destination call at the time of identification.

Abstract: An elevator, which includes a hoistway; and an elevator car vertically movable in the hoistway; and a counterweight vertically movable in the hoistway; and a number of upper rope wheels (in particular one or more) mounted higher than the car and counterweight, and a number of first ropes interconnecting the elevator car and counterweight, each of the more ropes passing around the one or more upper rope wheels; and a number of lower rope wheels mounted lower than the car and counterweight; and second ropes interconnecting the elevator car and counterweight, each passing around one or more of the lower rope wheels. The lower rope wheels include one or more first lower rope wheels; and one or more second lower rope wheels above the one or more first rope wheels.

Abstract: A system for protecting an elevator including a plurality of wall panels. The system includes a first plurality of hangers each having a suspension portion and a hanger portion. A protective sheet having a plurality of holes along an edge thereof is fastened to the suspension portions by a plurality of snap fasteners inserted through both the aperture of a hanger and a hole of the plurality of holes. The hanger portion engages an upper edge portion of a wall panel of the plurality of wall panels. In some uses, the protective sheet is positioned between the suspension portion and the wall panel of the plurality of wall panels. The hanger portion may be embodied as a hook and the snap fasteners may be embodied as plastic rivets.

Abstract: A method for balancing an elevator car including a frame; a cabin box mounted on the frame; and a plurality of elastic members, such as springs, in vertical direction between the frame and the cabin box, via which elastic members the cabin box rests on the frame. The method includes measuring the vertical distance between the frame and the cabin box in several horizontally spaced apart locations with distance sensors; and adjusting the weight distribution of the cabin box by adding and/or removing weight elements on the cabin box. An arrangement for balancing an elevator car is provided to implement the method.

Abstract: An elevator system includes an elevator car having an elevator car subsystem; a guide rail to guide the elevator car along a hoistway; primary windings positioned along the hoistway; permanent magnets coupled to the elevator car, the primary windings and permanent magnets defining a linear motor for imparting motion to the elevator car in response to a drive signal; and secondary windings coupled to the elevator car, the secondary windings generating a current to power the elevator car subsystem.

Abstract: A heavy load protective pad for use on industrial slings includes fasteners on a sleeve forming member which are secured together to encircle and secure the protective pad on an industrial sling at a desired location. Pockets formed in the protective pad house a pair of magnets which help the pad stay in place while attached to metal surfaces and a pair of block spacers which, in one configuration, serve to space the protective pad and underlying sling away from the load which is being lifted or pulled.

Abstract: A lifting beam is provided. The lifting beam includes a lower beam and an upper beam arranged above the lower beam; an arranger for arranging the beams in close and releasable engagement with one another; and systems for gripping the load. The gripping systems are kept in an open position when the beams are in engagement with one another, and in a closed position when an engager is released.

Abstract: The present disclosure relates to a crane having a travelable undercarriage and a superstructure which is rotatably supported thereon, to which a boom is luffably connected in an articulated manner, on the one hand, and a counterweight arrangement is telescopically supported, on the other hand. In accordance with the present disclosure, the counterweight arrangement comprises a U-shaped frame in which a likewise U-shaped counterweight frame is telescopically guided. The counterweight plates forming the counterweight are separated into two stacks which are each longitudinally displaceably guided on a side member.

Abstract: The invention relates to a cable winch, preferably a sprocket-type large cable winch for deep-sea applications, having a cable drum, the end faces of which are enclosed by end discs, and having at least one drive unit for driving the cable drum. The drive unit comprises a motor and a gear mechanism which on the output side drives an output wheel, said wheel being in engagement with a drive wheel, preferably in the form of a sprocket, provided on one of the end discs. According to the invention, the output wheel of the drive unit is arranged between motor and gear mechanism, and the motor and the gear mechanism extend towards different sides of the end disc.

Abstract: The present invention relates to a hydraulic trolley jack of the type that aids in lifting vehicles and that basically comprises a main body (1), a lifting element (2) capable of moving up or down with respect to the main body (1), an operating lever (3) that can be lowered through which the user operates the lifting element (2), interlocking means for fixing the operating lever (3) in the operative position thereof and automatic release means for automatically releasing said operating lever (3) such that it can be lowered on the main body (1) in a manner that is easy and comfortable for the user.

Abstract: According to the embodiments described herein, an industrial vehicle can include a camera and one or more processors. The camera can capture an input image of ceiling lights of the ceiling of the warehouse. The one or more processors can execute machine readable instructions to detect transversal edges from the ceiling lights of the input image. The machine readable instructions executed by the one or more processors can determine points of convergence between the transversal edges and a first edge line and a second edge line. The machine readable instructions executed by the one or more processors can select a set of point fixes from the points of convergence. The machine readable instructions executed by the one or more processors can navigate the industrial vehicle through the warehouse utilizing the centerline and the set of point fixes.

Abstract: A boom of a wheeled loader or digger is pivoted about a horizontal axis in a fork. Yaw adjustment is provided by opposed taper plugs which constitute a spindle of the boom. The taper portions of the plugs are eccentric with respect to the bearing portions and may be rotationally adjusted to correct misalignment of the boom in yaw. A threaded fastener locks the taper plugs to the boom.

Abstract: A fork-lift truck 1, 1? including a load carrier 2, an optical detector 3, 3? having a first field of view and arranged to provide an output, wherein the optical detector 3, 3? is movable together with the load carrier 2, an optical analysing unit 4, 4? arranged to analyse the output from said optical detector 3, 3?. The optical analysing unit 4, 4? is arranged to analyse the output from the optical detector 3, 3? so as to identify a first three-dimensional object, said first three-dimensional object being the load carrier 2, and a second three-dimensional object based on the output from the optical detector 3, 3?, and to determine the three-dimensional position of the identified load carrier 2 relative to the identified second three-dimensional object. Further a method for operating a fork-lift truck, a method for modifying a fork-lift truck and a computer program product.

Abstract: A fork-lift truck includes a load carrier, a first optical detector, an optical analysing unit, and a second optical detector. The analysing unit receives and analyses information from the second optical detector, wherein the first and second optical detector are movable together with the load carrier, and the first optical detector is positioned in relation to the load carrier, such that a first field of view includes at least a part of the load carrier and an extension of the load carrier. The second optical detector is positioned, such that a second field of view includes a predetermined volume above the load carrier The position and orientation of the second detector is calibrated in relation to a predetermined position on the fork-lift truck, in case one or more objects are positioned in the predetermined volume, at least one three-dimensional relative position can be determined.