US3846860A - Movable access ramp for vehicles - Google Patents

Movable access ramp for vehicles Download PDF

Info

Publication number
US3846860A
US3846860A US00372051A US37205173A US3846860A US 3846860 A US3846860 A US 3846860A US 00372051 A US00372051 A US 00372051A US 37205173 A US37205173 A US 37205173A US 3846860 A US3846860 A US 3846860A
Authority
US
United States
Prior art keywords
ramp
ramp section
section
innermost
cable
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.)
Expired - Lifetime
Application number
US00372051A
Other languages
English (en)
Inventor
H Kummerman
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.)
MacGregor Comarain SA
Original Assignee
MacGregor Comarain SA
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
Priority claimed from FR7223373A external-priority patent/FR2190707B1/fr
Application filed by MacGregor Comarain SA filed Critical MacGregor Comarain SA
Application granted granted Critical
Publication of US3846860A publication Critical patent/US3846860A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
    • B63B27/143—Ramps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
    • B63B19/08—Ports or like openings in vessels' sides or at the vessels' bow or stern
    • B63B2019/086—Stern ports, e.g. for ferries or Ro-Ro-vessels

Definitions

  • ABSTRACT A foldable ramp for loading and unloading a roll onroll off type cargo ship and consisting of three pivotally interconnected sections the innermost one of which is pivoted with its inboard end to the ship for being lowerable and extendable onto a wharf by ramp handling cables and winches provided on the ship.
  • the two outboard sections of the ramp are connected by ropes and sheaves to king-posts provided on the ship for automatically extending said sections while lowering the innermost ramp section through gravity.
  • the present invention relates generally and is essentially directed to a movable device forming an access ramp or like gangway, horse or bridge means adapted to provide a communication, passage, conveyance, transhipment or like means between on the one hand any vehicle in particular of land or marine character such as for instance a ship, boat or like floating vessel and on the other hand an outside loading or unloading area or platform such as a quay, pier, wharf, bank, shore or beach or yet another vehicle
  • such a ramp is also used directly by automotive handling carriages, trucks or like carts or wheeled cargo-handling gears running on said ramp in a shuttle-like manner enabling them to have direct access to the ship and to come back to the quay for loading or shipping and unloading or unshipping goods and like cargoes.
  • the ship is provided either aft or astern, or afore at the bow, or yet sidewise, with at least one large ramp of the kind pivotally connected with its inboard end to the ship for swinging vertically so as to be liftable or raisable upwards to a substantially inoperative upstanding position in a stowed or lashed condition on the ship during its sea trip and lowerable in operative working position to bear onto the quay with its opposite, i.e. outboard end.
  • said ramp when it is located astern i.e.
  • a ramp thus enables various kinds of wheeled vehicles to be taken aboard the ship for instance from quays which are not fitted up or suited for such a use.
  • said ramp is required to be long enough and for this ground it is necessary that the ramp may be folded vertically back against the planking or structure of the ship so as not to offer a too strong hold to the wind when the ship is at sea or'an excessive height likely to affect the stability of the ship.
  • the intermediate and outermost sections may be folded back together by being laid downwards against the bottom portion of the innermost or inboard section alongside thereof in a substantially upward raised or vertical position and both opposite side frame members or like girders or spars of the inboard section are extended outwards through a pair of booms or armlike beams extending beyond the vehicle runway carried therebetween and on either side of and along the intermediate section so as to bear in the lowered and extended working condition onto a pair of sidewise outwards projecting supports provided on the intermediate section on either side thereof, through the medium of a pair of longitudinal lower levers pivotally connected to the side frame members so that said levers may be swung in a vertical plane to an adjustable relative angular position by pressure fluid operated ram-type actuators or like power means.
  • the innermost or inboard section is secured with an intermediate point of one or each side frame member thereof and adjacent to its pivotal connection with the intermediate section to at least one handling cable or rope or to a pair of handling cables or ropes each one of which is wound up on an associated operating winch located on the ship whereby the ramp may be raised through a powered action or lowered through gravity.
  • the innermost section is partially suspended from each handling rope because the latter is kept taut with a determined constant tension corresponding for instance to the total weight of the loading ramp and each rope may be automatically wound up or paid out according to the variation in the load.
  • At least one winch and possibly both powered winches for extending the intermediate section are mounted on one or both of the side frame members, respectively, of the innermost section and the rope of each winch is successively reeved onto a first guide sheave or pulley carried by the free end of said extension boom and onto a second guide pulley or sheave carried by the intermediate section to be made fast at a stationary point of said boom.
  • the outermost section forming a supporting pad or flap member to enable the ramp to bear onto the quay, is pivotally connected substantially at its centre of gravity to said intermediate section so as to be always at poise, i.e. in a state of indifferent equilibrium or like balanced condition about its substantially horizontal pivot axis.
  • This known appliance exhibits various inconveniences since on the one hand it requires a relatively complex special mechanism to achieve a temporary engagement or like bearing connection between each boom end in extension of one side frame member of the innermost section with a corresponding sidewise projecting supporting pad of the intermediate section and on the other hand it requires the provision of at least state of indifferent equilibrium, i.e. likely to take any relative angular position about its swivel axis, there may be a possibility that this section, when being lowered onto the quay, is not in the proper relative position, i.e. substantially in parallel relation to the quay surface so that there may be a wrong bearing in particular in view of some buttressing or abutting effect so that a manual action has to be taken to overcome or obviate such a difficulty.
  • the invention is starting from the known kind of movable device forming a foldable access ramp for interconnecting a vehicle and an outside platform, which is swingable in parallel relation to a vertical plane so that it may be raised upwards to an inoperative position in a stowed or lashed condition on said vehicle and lowered downwards to an operativeworking position for resting partially on said platform, said ramp comprising at least two successive sections pivotally interconnected endwise in the longitudinal direction thereof, the first one of which forms the innermost or inboard section which is pivotally connected to said vehicle and secured with at least one point to at least one handling cable always kept taut and wound up onto at least one winch located on said vehicle whereas the other or second section may be folded back downwards against and along the first one and is fastened to at least one handling cable for extending said other section to a position which is
  • each handling cable for extending said other section is connected to means for tensioning and for automatically taking up any possible slack of said cable through the action of potential energy, which means are located on said vehicle and include self-acting means for automatically and unidirectionally stopping the cable and holding it against motion, said means being adapted to provide a stationary fastening point for causing through locking of the effective useful length of said cable, a tractive reaction force to arise for extending said other section during the downward motion of said innermost section which is always suspended from each aforesaid handling cable.
  • Such an arrangement offers the advantage to enable the second ramp section to be extended without the use of any powered winch for this purpose but by exclusively making use of the potential energy stored in the innermost ramp section in its raised position whereby said innermost section tends byitself to rock or tilt naturally downwards through gravity under the action of its own weight while causing at the same time the adjacent ramp section to be extended accordingly.
  • each handling cable for extending said adjacent portion is inadequate for exerting any significant rotary effect thereon, so that according to another characterizing feature of the invention, said automatic means for 4 stopping and unidirectionally holding against motion each handling cable for extending said adjacent section are arranged so as to be operative only from some determined angle of slope for instance of about 20 of the innermost section with respect to the vertical direction during the starting period of downward motion thereof.
  • the means for tensioning and automati cally taking up the slack of each cable controlling the extension of said second ramp section consist of a movable counterweight and for this purpose each handling cable for controlling the extension of said second ramp section is reeved on at least one preferably elevated or overhead loose guide pulley 0r idle sheave mounted on said vehicle to terminate into said counterweight whereas said automatic means for stopping and unidirectionally holding against motion consist of a stationary stop means provided on said vehicle for limiting the upward motion or stroke of said counterweight.
  • each aforesaid counterweight has a selectively adjustable weight to provide one aforesaid load transfer means.
  • each aforesaid handling cable for controlling the extension of said second ramp section is connected to a stationary fastening point provided on said vehicle through the medium of an adjusting member having a selectively variable length, such as a turn buckle or like tension shackle, rope tightener or stretcher forming an aforesaid tensioning and load transfer means.
  • each aforesaid handling cable for controlling the extension of said second ramp section is connected to a pressure fluid-operated lineardisplacement actuator for example of the ram type having a selectively adjustable force to form an aforesaid tensioning and load transfer means.
  • said automatic tensioning and slack taking-up means consist of at least one resiliently deformable spring-like member and for this purpose each aforesaid handling cable for controlling the extension of said second ramp section is connected to a stationary fastening point provided on said vehicle through the medium of this spring, whereas said automatic means for stopping and unidirectionally holding against motion consist of a stationary stop means for limiting the strain or deformation of said spring under maximum stress.
  • said automatic tensioning and slack taking-up means consist of a possibly self-acting winding-up appliance to which each aforesaid handling cable for controlling the extension of said second ramp section is connected whereas said automatic means for stopping and unidirectionally holding against motion consist either of the stationary fastening point of the end of said cable on said appliance or of a locking or braking member of said appliance for braking said cable at the end of its useful paying-out motion.
  • each aforesaid handling cable for controlling the extension of said second ramp section is connected to a power winch as known per se and the winding-up device consists of said winch which is preferably provided with means for keeping the cable tension constant and is located on said vehicle to form an aforesaid load transfer means.
  • said load transfer means consist of at least one counterweight or like counterbalancing or weighting body and preferably of a body with an adjustable weight fitted on one lever arm fast with said second ramp section so as to bias or urge same upwards i.e. towards its extended position.
  • each handling cable for controlling the extension of said intermediate section is reeved as known per se on at least one, associated main loose guide pulley or sheave carried by said intermediate section and this cable is secured with its aforesaid outer end at a point located outwards beyond the pivotal connection of said outermost section with said intermediate section.
  • an operated means for controlling the raising of said outermost element may consist of at least one preferably lineardisplacement, pressure fluid operated for instance ramp-like actuator mounted between the intermediate and outermost ramp sections and remote-controlled either automatically or by an operator from a remotecontrol station or desk.
  • the ramp in its lowered and extended working condition, remains at least partially suspended from its handling cables or ropes reeved on the associated kingposts, respectively, of the ship and made fast adjacent to the outer end of the inboard ramp section (i.e. that section which is pivoted to the ship) so a to relieve the quay from the load sustained by decreasing the bearing pressure of the free end of the ramp thereon by transferring or carrying over at least one part of the total ramp weight and of its possible instant load to the ship.
  • the bearing pressure exerted onto the quay by the outermost ramp section may also or in addition be decreased by applying a suitable adequate tension to the handling cables or ropes for controlling the extension of said intermediate section, so that their reeved portions between pulley or tackle blocks, interconnecting the innermost ramp section and the adjacent outer or intermediate ramp section pivotally connected thereto thereby exerts a relative lifting force on the combination of said intermediate ramp section and outermost ramp section for thereby transferring at least one part of the weight of such an assembly and of the instant load possibly carried thereby to said innermost ramp section while unidirectionally blocking the pivotal direction between both innermost and intermediate ramp sections in the relative swinging direction for holding same together (and this at least to some extent).
  • Such a load transfer to said handling cables required at least in part owing to the fact that the ramp forms a beam consisting of several pivotally interconnected sections results in applying corresponding tractive forces to the tops of said king-posts which are extending upwards to a relatively large height above the level of the horizontal centre line passing through the centre of gravity of the ship so that such tractive forces are applied to the ship with a rather significant lever arm generating a corresponding tilting moment tending to cause the ship to list or to be tilted to the side where the ramp is located thereby heeling over.
  • said actuator bears upon the adjacent outer ramp section through the medium of an arm pivotally connected to said inner ramp section and slidably engageable with the adjacent outer ramp section and said selectively variable connecting means consist of handling cables or ropes for controlling the extension of said outer ramp section and one reeved portion of which interconnects both pivotally interconnected ramp sections, these cables being operated by at least one winch mounted on the inner ramp section and adapted to exert a selectively adjustable fixed tension on said cables controlling the extension of said outer ramp section.
  • Such a combined system enables to achieve a buttressing effect locking or holding against motion the pivotal connection between both aforesaid ramp sections in both opposite directions of rotation thereby preventing any variation in the relative angular position of both ramp sections involved (with attendant upward or downward motion of the absolute position of the pivotal connection in space), so that the ramp behaves bodily as a bridge-like stiff or rigid continuous beam which is supported on the quay and by the pivotal connections with the ship at a location very close to the centre line of gravity of the ship thereby reducing by a corresponding amount the length of the lever arm generating the aforementioned tilting or tipping moment hence the possible resulting list of the ship.
  • the aforesaid known construction exhibits several inconveniences.
  • the pushing buttressing actuator and pivoted arm assembly engaging a sidewise projecting abutment directly intergral with the runway forming the intermediate or outer ramp section which isdevoid of side frame members is of a rather complicated construction.
  • the use of a cable or rope system in combination with the buttressing actuator exhibits the disadvantage of separating the buttressing functions in both opposite directions of rotations, respectively, of the pivotal connection, thereby also complicating the construction to a significant extent.
  • the locking effect achieved by the cables controlling the relative extension of the intermediate or outer section by means of their associated individual winch does not allow to achieve an absolutely positive locking effect, i.e.
  • ramps consisting of three pivotally interconnected sections the innermost section of which is pivoted to the ship while being suspended from a pair of cables or ropes made fast with one end to the ship and with the opposite end to the opposite longitudinal edges, respectively, of said innermost ramp section adjacent to theouter end thereof.
  • a foldable ramp which may be raised and lowered and consists of three pivotally interconnected sections the innermost section of which is pivoted to the ship and suspended from handling cables or ropes kept taut or stretched with an adjustable constant tension (and wound up on respective winches provided on the ship) adjacent to its outer ends of its opposite side frame members forming a kind of guardrailing.
  • the central or intermediate ramp section also comprises side frame members forming a kind of guard-railing on its opposite sides and a lineardisplacement buttressing actuator is mounted on either longitudinal side of the ramp on the adjacent ends of the side frame members of the inner and central ramp sections, respectively, above the pivotal connection therebetween and in the relative longitudinal vertical plane of the side frame members in the lowered working position of the ramp, thereby interconnecting these ends so as to exert a buttressing effect onto the ramp.
  • the cylinder of each actuator is mounted on the innermost ramp section so that each actuator exerts through its piston rod a thrust or pushing force onto the adjacent intermediate ramp section, whereby the pivotal connection between both of these ramp sections may be lifted upwards or raised in space so as to form an upward projecting angle therebetween.
  • One object of the invention is also to remove said drawbacks by providing a double buttressing arrangement of a simpler hence less expensive construction and combining into one single and same assembly the functions of locking the pivotal connection between both ramp sections in either of the opposite directions of relative rotation thereof, respectively.
  • the device according to the invention is characterized in that on the one hand said actuator is pivotally connected with its casing or body portion onto the side frame member of said innermost ramp section and extends substantially in parallel relation to the relative longitudinal vertical plane of said side frame member and higher than the geometrical pivot axis between both innermost and central ramp sections in the working position of the ramp whereas said central ramp section also comprises a pair of side frame members on its opposite longitudinal sides, respectively and on the other hand the movable thrust or pushing head of said actuator is freely engageable directly with at least one substantially concave thrust or buffer or like pad means forming said abutment member and secured onto the adjacent end of a corresponding side frame member of said outer ramp section, operated or boosted locking means being provided on said corresponding side frame member of said outer ramp section to rigidly connect said actuator head with said thrust or buffer member, these means forming said selectively variable connecting means.
  • thebuttressing actuator serves itself as a bracing or like tie-member invariably connecting together both interconnected ramp sections in the locking position of the actuator thereby positively and effectively preventing any relative folding or rotary motion about the pivotal connection between both ramp sections involved.
  • the movable thrust head of said actuator comprises at least one sidewise projecting portion such as for instance a transverse projecting stud-pin adapted to bearingly engage said buffer member or pad or like abutment means which is preferably a substantially square-shaped bracket and said locking means comprise at least one movable retaining member actuated in particular by an associated power-operated actuator and mounted on said adjacent outer ramp section, said retaining member being adapted to engage said studpin or like trunnion member to keep it in abutting engagement with said thrust or buffer pad.
  • each aforesaid retaining member is constantly biased or urged automatically towards its operative locking position either by a resilient spring-like biasing or return means or by gravity so that its associated power-operated actuator serves for unlocking purposes only.
  • This retaining member thus provides a temporary rigid working assembly secured against any separation, disengagement or like disconnection and against any slipping or sliding motion through mutual displacement, preferably by a shape-conditioned stop means or fit or the like thereby achieving a closed assembly.
  • the device according to the present invention brings about a substantial progress or advance or significant improvement over previously known devices of the same kind.
  • FIG. 1 shows a perspective view of the ramp of the invention according to a first embodiment thereof, with a second ramp section provided with cantilever booms or outriggers or like projecting arms, the ramp being mounted astern i.e. at the rear portion of a ship moored longitudinally along a quay berth and shown in its lowered extended working configuration wherein its longitudinal direction makes an acute angle with the general backwards pointing longitudinal direction of the ship;
  • FIG. 2 is a fragmentary top view of the arrangement shown in FIG. 1;
  • FIG. 3 is a fragmentary side view on a larger scale showing the ramp in a raised and folded stowing position, in an intermediate handling position in a partially lowered and extended state and in two lowered and extended working positions, respectively, in both cases where the access area of the ship is located higher or lower than the quay surface, respectively;
  • FIG. 4 is a partial side view of the upper right-hand portion of FIG. 3 showing the use of a counterweight for each handling cable controlling the extension of said second ramp section;
  • FIG. 5 is a view similar to FIG. 4, showing an alternative embodiment illustrating the use of a hydraulic actuator for each handling cable controlling the relative extension of said second ramp section;
  • FIG. 6 is a view similar to FIGS. 4 or-5, showing another modification illustrating the use of a spring for each handling cable controlling said relative extension of the second ramp section;
  • FIG. 7 is a view similar to FIGS. 4 to 6, showing still a further alternative embodiment illustrating the use of a constant-tension winch for each handling cable controlling the relative extension of said second ramp secvention wherein said cantilever booms or projecting outriggers are carried by the innermost ramp section instead of being carried by the intermediate ramp section;
  • FIG. 10 is a fragmentary side view of the preceding device shown in its raised and folded stowing position
  • FIG. 11 is a view similar to the preceding one but corresponding to the configuration shown in FIG. 9 when assuming the level of the access area of the ship to be approximately the same as or slightly higher than that of the quay;
  • FIG. 12 is a fragmentary side view on a larger scale in the encircled detail XII of FIG. 3;
  • FIG. 13 is a view similar to FIG. 11 but wherein the access area of the ship is assumed to be located higher than the quay surface;
  • FIG. 14 is an enlarged fragmentary side view of the encircled detail XIV in FIG. 13;
  • FIG. 15 is a view similar to FIG. 11 or 13 but wherein the level of the access area of the ship is assumed to be located below the quay surface level;
  • FIG. 16 is an enlarged fragmentary side view of the encircled detail XVI in FIG. 15;
  • FIG. 17 is a fragmentary side view on a larger scale, similar to FIGS. 10, ll, 13 and 15 and showing the ramp in different successive end and intermediate positions, respectively, to show the various steps of its operation in both cases where the access area of the ship is located lower and higher, respectively, than the quay surface;
  • FIG. 18 is a fragmentary outside lateral view, with parts broken away, of the ramp portion located adjacent to the pivotal connection between the innermost and central or intermediate ramp sections in a relative configuration partially folded with an upward projecting angle, said portion being provided with a device according to the invention, placed in its retracted inoperative position, i.e. without producing any buttressing effect;
  • FIG. 19 is a fragmentary side view on a larger scale of a still more reduced ramp portion about its pivotal connection in a relative lowered and extended working position with the innermost and intermediate ramp sections substantially aligned in mutually registering relationship in extension of each other, said buttressing appliance being in its operative extended position;
  • FIG. 20 is a fragmentary top view of the adjacent end portions of both corresponding side frame members of both ramp sections involved, respectively, shown in the preceding Figure.
  • a ship generally denoted by the reference numeral 1 and the stem or rear end portion of which only is shown, is moored adjacent a quay 2 for instance alongside thereof, so that the longitudinal direction 3 of the ship is substantially parallel or coextensive with the direction of the quay edge.
  • the rear portion of the ship is fitted with a movable access ramp 4 consisting of three successive innermost or foremost, central or intermediate and rearmost or outermost sections 40, 4b and 4c, respectively, pivotally connected to each other in the longitudinal direction in substantially aligned mutually registering relationship in the lowered extended working position by pivot hinges or the like 5, 5', respectively.
  • the outermost section 40 is desirably in the shape of a bearing pad or like engaging plate serving to support the ramp onto the quay 2, so that this section automatically conforms to the quay surface irrespective of the relative slope of the intermediate section 4b.
  • the outermost section 40 is as known per se wider on at least one side and at least towards its free end than the adjacent intermediate section 4b.
  • the innermost or inboard section 4a is made desirably wider at least towards one side as known per se at its forward or inner end through which it is pivoted at 6 to the ship 1.
  • At least the innermost section 4a is provided on either side thereof with two side frame members 7.
  • the innermost section 4a is secured preferably at its outer ,end or adjacent to its pivotal connection with the intermediate section 4b to at least one handling cable or rope wound up on an associated power-operated handling winch located on the ship.
  • Each handling cable 8, 8, extending from its associated power-operated winch l0, 10' passes at first on at least one preferably elevated auxiliary guide pulley or sheave mounted for instance on a deck erection or like superstructure such as a suitable king-post or mast 13, 13 (at the bottom portions of which the winches 10, 10 are located) and then on at least one main guide-pulley 9, 9' mounted on the side frame members 7 of the ramp section 411.
  • each handling cable 8, 8 forms a suitable reeved portion or the like interconnecting the ramp section 4a with the corresponding king-post l3, 13 while thus passing successively on several auxiliary guide-pulleys l2, 12 mounted in a same pulley or tackle block carried by the corresponding king-post 13, 13 and then on several main guide-pulleys-9, 9' also fitted together in a same tackle block secured to the corresponding side frame member 7, 7'.
  • Each cable 8, 8 thus exhibits multiple runs extending between the ship and the ramp.
  • one single cable only is used which, extending from the winch 10 and after having passed on the pulley-blocks l2 and 9 is reeved at 8" successively onto the guidepulleys 9a, 9a located beneath the ramp section 40 at the outlet of pulley-block 9 and the inlet of pulleyblock 9', respectively, for passing then on the latter and afterwards on the tackle-block 12 to be finally taken up by the other winch 10.
  • the intermediate section 4b is foldable downwards against the innermost section 4a along the latter and secured at at least one point and preferably at two points 19, 19 located for example sidewise of each side on the opposite longitudinal edges, respectively, to at least one and preferably two handling cables l5, l5 controlling the relative extension of said intermediate section and passing each one on at least one loose guide sheave and for instance two loose guide-sheaves 16, 16 which are preferably at an elevated position and carried for instance by a king-post or the like l3, 13, respectively, to be made fast through the medium of a turn-buckle, rope stretcher or stiffener or like cable tensioning or tightening device 17, 17 to a stationary point 18, 18 fast for instance with the associated king-post 13, 13'.
  • the intermediate section 4b extends beyond its pivotal connection 5 with the innermost section 40 with at least one longitudinal projecting armlike boom or integral outrigger carrying towards its free end at least one auxiliary guide-sheave for each handling cable 15, 15 controlling the extension of said intermediate section.
  • Each projecting boom 23, 23' carries at least one auxiliary guide-pulley 19, 19' for the handling cable 15,15 controlling the extension of said intermediate section, which thus is reeved successively over this pulley 19, 19' and then on a main loose associated guide-pulley 14, 14' carried by the innermost secton 4a respectively at the corresponding auxiliary sheave 19, 19' to be made fast at a stationary point 14a, 14b on the associated side frame member of the innermost section 4a.
  • each boom 23, 23' there are desirably provided, on each boom 23, 23', several auxiliary loose guide-pulleys l9, 19' mounted in a same tackle-block and, on the innermost section 40 on either side thereof, several loose main guide-pulleys 14, 14 also mounted in a same tackleblock so as to form a force-reducing reeving between each boom 23, 23 and the innermost section.
  • At least one (hydraulic or pneumatic) pressure fluid operated actuator preferably of the lineardisplacement type consisting of a cylinder and piston assembly mounted between the intermediate ramp section 412 and the innermost ramp section 40 and pivotally connected with its cylinder bottom or back end to the end of the section 4b and with its piston rod to the end portion forming the heel part of the section 40 located under the section 4b (see FIG. 3).
  • This actuator is desirably provided and remote-controlled for raising the innermost section 4c so that the latter rests entirely throughout its seating surface in a flat-laid condition onto the quay 2, so as to properly connect the runway surface of the intermediate section 4b to the quay surface and to distribute the load uniformly on the latter to avoid any buttressing, punching or like effect.
  • the tractive reaction force at the fastening point of each handling cable 15, 15' controlling the extension of the intermediate section, on its associated derrick or 13 king-post 13, 13' may be produced in various ways. Thus in FIGS. 1 and 3, this reaction force is merely produced by the stationary fastening point l8, 18 of each cable at the top of the associated king or derrick post. In the alternative embodiment according to FIG.
  • This guide-track 33 is provided at its upper end with a stationary stop means 34 for limiting the upward stroke of the associated counterweight 31.
  • the position of the counterweight obviously varies with the relative position of the ramp during operation thereof, the engagement of the counterweight 31 with the stop means 34 automatically causing the relative raising and extension of the intermediate ramp section 4b.
  • each cable 15, 15', after passing over the associated guide-pulley 16a is reeved on a guide-pulley 35 carried by the piston rod of a linear-displacement pressure fluid operated, for example, hydraulic actuator 36 mounted on the associated king-post 13, 13', the thus returning run of each cable 15, 15' being made fast at a stationary point 37 of the corresponding derrick mast or king-post.
  • a linear-displacement pressure fluid operated for example, hydraulic actuator 36 mounted on the associated king-post 13, 13', the thus returning run of each cable 15, 15' being made fast at a stationary point 37 of the corresponding derrick mast or king-post.
  • Each actuator 36 thus allows to vary at will and preferably at the same time or synchronously the tension in the associated cable 15, 15' in particular through selective adjustment of the control fluid pressure fed into the cylinder of actuator 36.
  • the pressure fluid operated actuator 36 has been replaced by a spring-operated actuator or the like 38 secured to the corresponding king-post 13, 13' and comprising for instance a cylinder containing at least one for instance helical compression spring with one end of which cooperates a sliding piston coaxially integral with a rod carrying at its free outer end the pulley 35.
  • the helical spring could possibly be replaced by a compressible preferably gaseous fluid such s nitrogen.
  • each cable 15, 15', after passing on the guide-pulley 16, 16, is wound up on a power-operated winch 39 preferably applying a constant tension to the cable and mounted on the associated king-post 13, 13, said winch being driven for example hydraulically or electrically.
  • the actuators 36 in the embodiment of FIG. or the winches 39 in the embodiment of FIG. 7 allow to selectively vary the tension in the cables 15, in the extended and lowered working configuration of the ramp 4, thereby tending to lift the intermediate ramp section 4b upwards to thus release selectively the bearing pressure exerted on the quay 2 by the outermost ramp section 4c.
  • Another means enabling to produce the same relief effect consists according to the embodiment of FIG. 8 to provide on each projecting boom 23, 23' of the intermediate ramp section 4b a counterweight or the like 40 having for instance a selectively variable weight and desirably located endwise of the associated projecting boom 23, 23'.
  • Each counterweight 40 thus applies a tilting moment to the section 4b about its pivot axis 5 in the upward direction or direction of raising of said section.
  • a counterweight it is also possible to correspondingly weight the structure of the booms 23, 23' by increasing their mass.
  • Automatic control means are desirably provided to keep the innermost section 4a away or spaced from the quay in the lowered working configuration of the ramp in order that it never directly engages the quay and each operating winch 10, 10' is phase-locked in followup relationship to these control means which consist for instance of at least one sensor or like detector 21 (see FIGS. 2, 3 and 8) secured for example to the intermediate section 4b in particular below same and towards its inner end and adapted to bear upon the surface of the quay 2, preferably adjacent to the edge of the quay to'detect any variation in relative position in height or in the level difference between the ship I and the quay as caused in particular by an upward motion of the ship.
  • Such a sensor 21 may consist for example of an electric limit switch with normally open contacts adapted to'control the simultaneous or synchronized operation of the respective motors or prime movers of the handling winches 10, 10' by acting for instance either upon an electromagnetic valve in the case of pressure-fluid operated motors such as hydraulic or pneumatic motors or upon an electric switch relay in the case of electric motors.
  • the system is desirably fitted with automatic control means for adjusting the relative angular position of the innermost and intermediate ramp sections 4a and 4b,
  • control means consist for example of at least one sensor or like detector 22 mounted on one of the two adjacent ramp sections 4a, 4b, preferably in the vicinity of its pivotal connection 5 with the other section and adapted to engage said other section so as to measure the angle formed therebetween in particular during the raising motion of the ship.
  • this detector 22 is mounted on the protruding boom 23 of the intermediate ramp section 4b between the latter and the side frame member 7 of the innermost ramp section 4a.
  • This detector 22 may as well as the sensor 21 consist advantageously of an electric limit switch or of a position pick-up or detecting means with an equivalent action.
  • each aforesaid protruding boom 23, 23' is in extension of the corresponding side edge of the intermediate section 4b. It is apparent however that generally each projecting boom may be in extension of any one of the two innermost and intermediate ramp sections 4a, 4b, respectively, while extending beyond the common pivotal connection between the adjacent ends thereof towards the other section which then carries at least one main guide-pulley or tackle-block for the handling cable 15, 15' controlling the extension of the intermediale section whereas the free end of the corresponding boom then carries at least one auxiliary guide-pulley or tackle-block for this cable.
  • FIGS. 9 through 17 show another embodiment of the invention wherein the relative arrangement of said booms and sheaves or pulley-blocks has been reversed with respect to that of the first embodiment shown in FIGS. 1 to 8.
  • it is the innermost ramp section 40 which extends beyond its pivotal connection 5 with the intermediate section 4b with at least one integral projecting longitudinal armlike boom or outrigger and preferably with two such booms 7a, 7b substantially co-extensive in parallel relationship with the general longitudinal direction of the ramp in extension of the side frame members 7, on either side of the intermediate section 4b while being desirably transversely offset outwards so as to be spaced sidewise from the intermediate section 4b and preferably somewhat elevated or higher with respect thereto.
  • Each projecting boom 7a, 7b then carries the or each main guide-pulley or tackle-block 19, 19' for the han dling cable 15, controlling the relative extension of the intermediate section, whereas the intermediate section 4b carries at an intermediate point thereof at least one auxiliary guide-pulley or tackle-block 14, 14' for each handling cable 15, 15' controlling the extension of said intermediate .section and leading from each main guide-pulley or tackle-block 19, 19'.
  • Each handling cable 8, 8' for the ramp is then made fast for instance with a tackle-block at a point 9, 9' of the innermost section 4a towards the pivotal connection 5 or outer end of same.
  • each king-post 13, 13 On each king-post or derrick mast 13, 13', the free downward extending run of each cable 15, 15 terminates in a counterweight or the like 31, 31'.
  • Each king-post 13, 13 comprises a stationary stop means 34, 34' limiting the upward vertical stroke of the associated counterweight 31, 31.
  • Each handling cable 15, 15' controlling the relative extension of the intermediate ramp section is desirably made fast with the end of its run leading from the corre sponding reeving portion 14, 14' thereof and after havin g passed over an additional guide-pulley 25, 25 (FIGS. 10, 11, l3, 15) to the outermost section 4c at a point 20, located outwards beyond the pivotal connection 5' of this outermost section with the intermediate section 4b.
  • the cables 15, 15 also serve to automatically raise or lift the outermost section 4c so that the latter rests entirely throughout its seating surface on the quay 2 thereby properly connecting the runway surface of the intermediate section 4b to the quay surface and distributing the load uniformly on the latter to avoid any punching or like buttressing effect.
  • each guide-pulley 25, for each handling cable 15, 15' controlling the relative extension of the intermediate section be located preferably substantially at the pivotal connection 5 between the innermost section 4a and the intermediate section 4bfor instance in coaxial relationship therewith to return or guide backwards the associated cable 15, 15' leading from the guide-pulley or tackle-block 14, 14 to the fastening point 20, 20' provided on the outermost section 40.
  • Pushing or thrust means such as one or several lineardisplacement type pressure-fluid operated for instance hydraulic or pneumatic actuators with a cylinder and piston assembly 24 mounted on the ship 1 are adapted to bear freely in abutting relationship against the innermost ramp section 4a in the fully raised position thereof (FIG. 3) to initiate its downward tilting or swinging motion through gravity and possibly to brake or slow down same at the end of its raising motion at which it is engageable with stationary stop or rest means 41 forming wooden or rubber buffers or like pads provided on the ship.
  • these thrust actuators 24 could themselves form such stop or abutment means.
  • Each actuator 24 instead of being mounted on the ship 1 could as well be mounted on the innermost ramp section 4a so as to be freely engageable with a stationary portion of the ships structure at the start of the downward tilting or swinging motion of the ramp or at the end of the raising motion thereof.
  • the innermost section 4a is desirably enlarged or widened at 4 towards its inner end and preferably at least towards the obtuse angle defined between its own longitudinal direction and the longitudinal direction of the ship in the case of a ramp arranged towards one end for example aft of the ship with a view to facilitate access therto.
  • a lashing or locking appliance 42 is desirably provided on the ship for locking or holding the ramp 4 against motion in the stowed noperative position, i.e. when it is folded back and swung up (see FIGS. 3 to 7).
  • Each locking or lashing device 42 is adapted to preferably engage the intermediate ramp section 4b folded downwards against the innermost section 4a which has come in abutment with the buffers 41 after having been run or extended through the latter,
  • Each locking device 42 may be operated either manually or automatically for instance may hydraulic actuators and consist in particular of a latch, lockbolt or like hook member adapted to engage a bolt-clasp or equivalent catch or keeper means integral with the intermediate section 4b while preferably exerting a tractive force urging said ramp to bear against its abutment pads or buffers 41.
  • each locking device 42 could also be provided on the ramp 4 to be engageable with a complementary or mating stationary catch element integral with the ships structure.
  • Automatic control means are advantageously provided to selectively vary the bearing reaction of the ramp 4 on the platform or quay 2, each aforesaid load transfer means, such as in particular the hydraulic actuators 36 or the winches 39 applying a constant tension to the associated cables, being then phase-locked in follow-up relationship to said control means.
  • These control means consist for instance for a sensor or like detector forming a pressure pick-up device mounted on the ramp towards its outer end for bearing upon the quay 2 in the working position so as to measure the bearing reaction of said quay.
  • each sensor element 21 is here secured to the innermost section 4a in particular underneath the latter and towards its outer end whereas the detector 22 is mounted on the intermediate ramp section 4b between the latter and the projecting boom 7a of the innermost ramp section 4a.
  • the operation of the ramp 4 is then the following with reference at first to FIG. 3 showing the first embodiment when assuming the ramp initially in the position C wherein it is folded back and entirely raised to an upstanding position.
  • the ramp is held against motion in abutment against the buffers 41 by the locking arrangement 42, the ramp sections 4b and 40 being folded back against the section 4a.
  • the locking device 42 is at first unlocked in order to disengage or release the ramp 4 and the winches 10, 10 which are desirably provided with means for automati-

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jib Cranes (AREA)
  • Bridges Or Land Bridges (AREA)
  • Ship Loading And Unloading (AREA)
  • Fats And Perfumes (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
US00372051A 1972-06-28 1973-06-21 Movable access ramp for vehicles Expired - Lifetime US3846860A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7223373A FR2190707B1 (it) 1972-06-28 1972-06-28
FR7319511A FR2231597B2 (it) 1972-06-28 1973-05-29

Publications (1)

Publication Number Publication Date
US3846860A true US3846860A (en) 1974-11-12

Family

ID=26217187

Family Applications (1)

Application Number Title Priority Date Filing Date
US00372051A Expired - Lifetime US3846860A (en) 1972-06-28 1973-06-21 Movable access ramp for vehicles

Country Status (15)

Country Link
US (1) US3846860A (it)
JP (1) JPS5725438B2 (it)
AU (1) AU473622B2 (it)
DD (1) DD108946A5 (it)
DE (2) DE2332511C3 (it)
DK (1) DK142900B (it)
ES (1) ES416373A1 (it)
FI (2) FI59760C (it)
FR (1) FR2231597B2 (it)
GB (1) GB1441464A (it)
IT (1) IT989399B (it)
NL (2) NL175982C (it)
NO (2) NO144998C (it)
SE (2) SE400065B (it)
SU (1) SU1207392A3 (it)

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933256A (en) * 1973-05-07 1976-01-20 Navire Cargo Gear International Ab Ship's loading ramp
US4020954A (en) * 1976-01-05 1977-05-03 Sun Shipbuilding And Dry Dock Company Ship loading ramp
US4155468A (en) * 1977-05-31 1979-05-22 The Robert E. Royce Revocable Trust Vehicle mounted access ramp assembly for wheel chair users
US4169296A (en) * 1978-03-21 1979-10-02 Ingenieursbureau Marcon (Marine Consultants) B.V. Connecting bridge for personnel to connect two mutually movable marine structures
US5338143A (en) * 1991-07-22 1994-08-16 Mitsubishi Jukogyo Kabushiki Kaisha Car storage apparatus for car carrier
US5511922A (en) * 1991-08-23 1996-04-30 Kayaba Macgregor Navire Kabushiki Kaisha Ship weight cargo loading and unloading system
US5618148A (en) * 1994-02-11 1997-04-08 TTS Dr.o slashed.bak A/S Method and arrangement for transporting larger units
US6536363B1 (en) * 1999-07-14 2003-03-25 Macgregor Sweden Ab Device for ramps
US6537009B1 (en) * 1997-04-29 2003-03-25 Etat Francais Represente Delegation Generale Pour L'armement - Dcn Handler for container ship
WO2003080426A1 (en) * 2002-03-21 2003-10-02 Evangelos Zafiridis Remote controlled electromechanical mechanism for raising-lowering scales of access or gangways
US6811368B1 (en) 2002-10-02 2004-11-02 Advanced Design Consulting Usa, Inc. Roll-on / roll-off system and process for equipment transfer between ships or a ship and quay
US20050142963A1 (en) * 2003-12-24 2005-06-30 Farrall Adam J. Armband
EP1648804A1 (en) * 2003-07-29 2006-04-26 Han AH Engineering Co., Ltd. Apparatus for loading and unloading cargo at sea-side of ship
US20060195220A1 (en) * 2005-02-28 2006-08-31 The Braun Corporation Wheelchair lift with a rotary sensor used to determine lift position
US20070163484A1 (en) * 2005-12-29 2007-07-19 Singapore Technologies Marine Limited Ramp
US7341422B1 (en) * 1998-04-08 2008-03-11 Trailer Bridge, Inc. Container transportation system and method
US20080187425A1 (en) * 2007-02-01 2008-08-07 Lift-U, Division Of Hogan Mfg., Inc. Compact folding slide-out ramp assembly
US20080271268A1 (en) * 2007-05-04 2008-11-06 Lift-U, Division Of Hogan Mfg., Inc. Articulating close out assembly for a fold out ramp
WO2011139216A1 (en) * 2010-05-07 2011-11-10 Tts Marine Ab Device in connection with a folding ship ramp
US8122553B1 (en) 2011-01-27 2012-02-28 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
WO2011154730A3 (en) * 2010-06-07 2012-04-26 Bmt Nigel Gee Limited Roller fender with damper for the rotational movement
US8250693B1 (en) 2011-01-27 2012-08-28 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
US8375496B1 (en) 2011-01-27 2013-02-19 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
WO2013095243A1 (en) * 2011-12-22 2013-06-27 Cargotec Sweden Ab A ramp buttress and a ship ramp comprising such a ramp buttress
US8517659B2 (en) 2008-10-07 2013-08-27 Ricon Corp. Self-aligning platform mechanism for low-floor vehicles access device
US20130283550A1 (en) * 2010-11-23 2013-10-31 Ensco 392 Limited Bridge apparatus
US20140059786A1 (en) * 2012-08-29 2014-03-06 Progress Rail Services Corporation System and method for aligning portions of a loading ramp
US20140219756A1 (en) * 2013-02-07 2014-08-07 Dallas Smith Corporation Leveling ramp for a wheelchair
WO2014146041A1 (en) * 2013-03-15 2014-09-18 Canopy Enterprises, Inc. System and method for transferring persons between a water vessel and the water
US20140328660A1 (en) * 2009-06-03 2014-11-06 Design Specific Ltd. Compact Wheelchair Platform
US9050229B1 (en) * 2013-10-31 2015-06-09 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
WO2015160299A1 (en) * 2014-04-15 2015-10-22 Tts Marine Ab Proceeding at a ramp for ships and a device for accomplish the told proceeding
US20160368575A1 (en) * 2015-06-22 2016-12-22 Thomas M. Day Door systems and methods for boats
CN107128857A (zh) * 2017-03-31 2017-09-05 中国核工业二三建设有限公司 核电站模块翻转装置
US10093494B2 (en) * 2014-06-12 2018-10-09 Nordock, Inc. Vertically stored telescoping lip leveler
US10336410B1 (en) 2016-06-09 2019-07-02 Thomas M. Day Marine vessel with moving control unit
USD910938S1 (en) * 2019-03-26 2021-02-16 Vermont Juvenile Furniture Mfg., Inc. Pet ramp
CN112512913A (zh) * 2018-06-21 2021-03-16 麦克格雷戈瑞典股份公司 船舶货物坡道定位系统
USD987916S1 (en) * 2021-07-14 2023-05-30 Hefei Haimai Information Technology Co., Ltd. Pet climbing platform
USD995955S1 (en) * 2021-10-20 2023-08-15 Ningbo Seedling Industry and Technology Pte. Ltd. Animal saving escape ramp

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545918B2 (it) * 1974-01-31 1979-03-22
AU572687B2 (en) * 1984-09-05 1988-05-12 Samuel Brouff Ramp for forklift
EP0487908A3 (en) * 1990-10-31 1992-09-02 Stanescu Georgel Valentin Gangplank or ladder for watercraft made up of several articulated sections
AU661137B2 (en) * 1992-04-23 1995-07-13 Alfred Wayne Morgan Ramp
US5746239A (en) * 1995-09-19 1998-05-05 Hunt-Wesson, Inc. Dual trace valve system
ES2208011B1 (es) * 2001-06-13 2005-08-16 Anton Zenarruzabeitia Etxaniz Pasarela de acceso entre una embarcacion y un muelle de atraque.
SE535396C2 (sv) * 2008-02-19 2012-07-24 Cargotec Sweden Ab Lastramp för fartyg
JP6218316B2 (ja) * 2013-09-30 2017-10-25 三井住友建設株式会社 桁ブロック据付装置及び桁ブロックの据付方法
RU2598681C1 (ru) * 2015-03-04 2016-09-27 Открытое акционерное общество "Невское проектно-конструкторское бюро" Кормовое высадочное устройство
JP6637262B2 (ja) * 2015-07-23 2020-01-29 カヤバ システム マシナリー株式会社 折り畳み式渡り橋
DE102018000159A1 (de) * 2018-01-11 2019-07-11 Senvion Gmbh Landungsvorrichtung für eine Offshore-Windenergieanlage
CN112092983B (zh) * 2020-09-24 2022-07-26 无锡市华海船用设备有限公司 一种特种船用安全可靠车辆跳板结构系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556175A (en) * 1945-06-12 1951-06-12 Lester P Frost Bridge and mobile launching structure therefor
US2617131A (en) * 1948-08-26 1952-11-11 Stanolind Oil And Gas Co Landing gear
US2641785A (en) * 1948-06-26 1953-06-16 Standard Oil Dev Co Marine transfer ramp
US3411169A (en) * 1967-01-06 1968-11-19 Miami Beach Yacht Corp Cargo ramp assembly
US3426719A (en) * 1966-05-03 1969-02-11 Leonard Mizell Marine transfer device
US3468280A (en) * 1967-09-26 1969-09-23 Us Navy Ramp for lst
US3580404A (en) * 1969-07-31 1971-05-25 William J Moser Loading ramps for trailers
US3687308A (en) * 1969-11-11 1972-08-29 Lennart Apelstrand Ship{40 s loading ramp
US3747354A (en) * 1971-06-16 1973-07-24 Torrey E Retractable pier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5012671A (it) * 1973-06-05 1975-02-08
JPS5017195U (it) * 1973-06-13 1975-02-24

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556175A (en) * 1945-06-12 1951-06-12 Lester P Frost Bridge and mobile launching structure therefor
US2641785A (en) * 1948-06-26 1953-06-16 Standard Oil Dev Co Marine transfer ramp
US2617131A (en) * 1948-08-26 1952-11-11 Stanolind Oil And Gas Co Landing gear
US3426719A (en) * 1966-05-03 1969-02-11 Leonard Mizell Marine transfer device
US3411169A (en) * 1967-01-06 1968-11-19 Miami Beach Yacht Corp Cargo ramp assembly
US3468280A (en) * 1967-09-26 1969-09-23 Us Navy Ramp for lst
US3580404A (en) * 1969-07-31 1971-05-25 William J Moser Loading ramps for trailers
US3687308A (en) * 1969-11-11 1972-08-29 Lennart Apelstrand Ship{40 s loading ramp
US3747354A (en) * 1971-06-16 1973-07-24 Torrey E Retractable pier

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933256A (en) * 1973-05-07 1976-01-20 Navire Cargo Gear International Ab Ship's loading ramp
US4020954A (en) * 1976-01-05 1977-05-03 Sun Shipbuilding And Dry Dock Company Ship loading ramp
US4155468A (en) * 1977-05-31 1979-05-22 The Robert E. Royce Revocable Trust Vehicle mounted access ramp assembly for wheel chair users
US4169296A (en) * 1978-03-21 1979-10-02 Ingenieursbureau Marcon (Marine Consultants) B.V. Connecting bridge for personnel to connect two mutually movable marine structures
US5338143A (en) * 1991-07-22 1994-08-16 Mitsubishi Jukogyo Kabushiki Kaisha Car storage apparatus for car carrier
US5511922A (en) * 1991-08-23 1996-04-30 Kayaba Macgregor Navire Kabushiki Kaisha Ship weight cargo loading and unloading system
US5618148A (en) * 1994-02-11 1997-04-08 TTS Dr.o slashed.bak A/S Method and arrangement for transporting larger units
US6537009B1 (en) * 1997-04-29 2003-03-25 Etat Francais Represente Delegation Generale Pour L'armement - Dcn Handler for container ship
US7341422B1 (en) * 1998-04-08 2008-03-11 Trailer Bridge, Inc. Container transportation system and method
US20080107505A1 (en) * 1998-04-08 2008-05-08 Trailer Bridge, Inc. Container transportation system and method
US6536363B1 (en) * 1999-07-14 2003-03-25 Macgregor Sweden Ab Device for ramps
WO2003080426A1 (en) * 2002-03-21 2003-10-02 Evangelos Zafiridis Remote controlled electromechanical mechanism for raising-lowering scales of access or gangways
US6811368B1 (en) 2002-10-02 2004-11-02 Advanced Design Consulting Usa, Inc. Roll-on / roll-off system and process for equipment transfer between ships or a ship and quay
EP1648804A1 (en) * 2003-07-29 2006-04-26 Han AH Engineering Co., Ltd. Apparatus for loading and unloading cargo at sea-side of ship
EP1648804A4 (en) * 2003-07-29 2006-10-11 Han Ah Engineering Co Ltd DEVICE FOR LOADING AND UNLOADING GOODS ON THE MARITIME SIDE OF A BOAT
US20050142963A1 (en) * 2003-12-24 2005-06-30 Farrall Adam J. Armband
US20060195220A1 (en) * 2005-02-28 2006-08-31 The Braun Corporation Wheelchair lift with a rotary sensor used to determine lift position
US7509187B2 (en) * 2005-02-28 2009-03-24 The Braun Corporation Wheelchair lift with a rotary sensor used to determine lift position
US20070163484A1 (en) * 2005-12-29 2007-07-19 Singapore Technologies Marine Limited Ramp
US20080187425A1 (en) * 2007-02-01 2008-08-07 Lift-U, Division Of Hogan Mfg., Inc. Compact folding slide-out ramp assembly
US8505141B1 (en) 2007-02-01 2013-08-13 Lift-U, Division Of Hogan Mfg., Inc. Compact folding slide-out ramp assembly
US8359691B2 (en) 2007-02-01 2013-01-29 Lift-U, Division Of Hogan Mfg., Inc. Compact folding slide-out ramp assembly
US7870630B2 (en) * 2007-05-04 2011-01-18 Lift-U, Division Of Hogan Mfg., Inc. Articulating close out assembly for a fold out ramp
US20080271268A1 (en) * 2007-05-04 2008-11-06 Lift-U, Division Of Hogan Mfg., Inc. Articulating close out assembly for a fold out ramp
US9783094B2 (en) 2008-10-07 2017-10-10 Ricon Corp. Self-aligning platform mechanism for low-floor vehicles access device
US8517659B2 (en) 2008-10-07 2013-08-27 Ricon Corp. Self-aligning platform mechanism for low-floor vehicles access device
US9445962B2 (en) * 2009-06-03 2016-09-20 Design Specific, Ltd. Compact wheelchair platform
US20140328660A1 (en) * 2009-06-03 2014-11-06 Design Specific Ltd. Compact Wheelchair Platform
WO2011139216A1 (en) * 2010-05-07 2011-11-10 Tts Marine Ab Device in connection with a folding ship ramp
JP2013525206A (ja) * 2010-05-07 2013-06-20 ティーティーエス・マリン・アクテボラゲット 船舶用折り畳み式ランプウェイに結合される装置
WO2011154730A3 (en) * 2010-06-07 2012-04-26 Bmt Nigel Gee Limited Roller fender with damper for the rotational movement
EP2669178A1 (en) * 2010-06-07 2013-12-04 Bmt Nigel Gee Limited Transfer apparatus with compensation means for vessel movement
US8959694B2 (en) * 2010-11-23 2015-02-24 Ensco 392 Limited Bridge apparatus
US20130283550A1 (en) * 2010-11-23 2013-10-31 Ensco 392 Limited Bridge apparatus
US8375496B1 (en) 2011-01-27 2013-02-19 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
US8250693B1 (en) 2011-01-27 2012-08-28 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
US8132281B1 (en) 2011-01-27 2012-03-13 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
US8122553B1 (en) 2011-01-27 2012-02-28 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
US8181300B1 (en) 2011-01-27 2012-05-22 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
WO2013095243A1 (en) * 2011-12-22 2013-06-27 Cargotec Sweden Ab A ramp buttress and a ship ramp comprising such a ramp buttress
US8832890B2 (en) * 2012-08-29 2014-09-16 Progress Rail Services Corp System and method for aligning portions of a loading ramp
US9009900B2 (en) 2012-08-29 2015-04-21 Progress Rail Services Corporation System and method for aligning portions of a loading ramp
US20140059786A1 (en) * 2012-08-29 2014-03-06 Progress Rail Services Corporation System and method for aligning portions of a loading ramp
US9101519B2 (en) * 2013-02-07 2015-08-11 Dallas Smith Corporation Leveling ramp for a wheelchair
US20140219756A1 (en) * 2013-02-07 2014-08-07 Dallas Smith Corporation Leveling ramp for a wheelchair
WO2014146041A1 (en) * 2013-03-15 2014-09-18 Canopy Enterprises, Inc. System and method for transferring persons between a water vessel and the water
US9050229B1 (en) * 2013-10-31 2015-06-09 Lift-U, Division Of Hogan Mfg., Inc. Fold out ramp
WO2015160299A1 (en) * 2014-04-15 2015-10-22 Tts Marine Ab Proceeding at a ramp for ships and a device for accomplish the told proceeding
KR20160147827A (ko) * 2014-04-15 2016-12-23 티티에스 마린 악티에볼라게트 선박 램프에서의 처리법 및 상기 처리법을 성취하기 위한 장치
US10093494B2 (en) * 2014-06-12 2018-10-09 Nordock, Inc. Vertically stored telescoping lip leveler
US20160368575A1 (en) * 2015-06-22 2016-12-22 Thomas M. Day Door systems and methods for boats
US9873490B2 (en) * 2015-06-22 2018-01-23 Thomas M Day Door systems and methods for boats
US10336410B1 (en) 2016-06-09 2019-07-02 Thomas M. Day Marine vessel with moving control unit
US11021217B2 (en) 2016-06-09 2021-06-01 Thomas M. Day Marine vessel with moving control unit
CN107128857A (zh) * 2017-03-31 2017-09-05 中国核工业二三建设有限公司 核电站模块翻转装置
CN107128857B (zh) * 2017-03-31 2020-08-21 中国核工业二三建设有限公司 核电站模块翻转装置
CN112512913A (zh) * 2018-06-21 2021-03-16 麦克格雷戈瑞典股份公司 船舶货物坡道定位系统
CN112512913B (zh) * 2018-06-21 2022-07-08 麦克格雷戈瑞典股份公司 船舶货物坡道定位系统
USD910938S1 (en) * 2019-03-26 2021-02-16 Vermont Juvenile Furniture Mfg., Inc. Pet ramp
USD911637S1 (en) * 2019-03-26 2021-02-23 Vermont Juvenile Furniture Mfg., Inc. Pet ramp
USD987916S1 (en) * 2021-07-14 2023-05-30 Hefei Haimai Information Technology Co., Ltd. Pet climbing platform
USD995955S1 (en) * 2021-10-20 2023-08-15 Ningbo Seedling Industry and Technology Pte. Ltd. Animal saving escape ramp

Also Published As

Publication number Publication date
FI59760C (fi) 1986-12-16
GB1441464A (en) 1976-06-30
SE433065B (sv) 1984-05-07
DE2332511C3 (de) 1985-04-25
DE7323734U (de) 1979-01-04
FR2231597B2 (it) 1977-12-23
DK142900B (da) 1981-02-23
ES416373A1 (es) 1976-05-01
AU5734573A (en) 1975-01-09
DE2332511B2 (de) 1980-01-17
NO144998C (no) 1981-12-28
JPS4985784A (it) 1974-08-16
DE2332511A1 (de) 1974-01-10
SE400065B (sv) 1978-03-13
FR2231597A2 (it) 1974-12-27
NO801946L (no) 1974-03-15
NO144998B (no) 1981-09-14
NL7309006A (it) 1974-01-02
SE7609767L (sv) 1976-09-03
NL8007055A (nl) 1981-04-29
NO145535B (no) 1982-01-04
SU1207392A3 (ru) 1986-01-23
NL175982B (nl) 1984-09-03
JPS5725438B2 (it) 1982-05-29
IT989399B (it) 1975-05-20
DD108946A5 (it) 1974-10-12
DK142900C (it) 1981-09-28
FI59760B (fi) 1981-06-30
NL175982C (nl) 1985-02-01
AU473622B2 (en) 1976-06-24
NO145535C (no) 1982-04-14

Similar Documents

Publication Publication Date Title
US3846860A (en) Movable access ramp for vehicles
US3879784A (en) Slewing access ramp for vehicles
US3598440A (en) Rotatable container-hoisting apparatus
US3390657A (en) Gantry crane for loading barges on ships
US5538382A (en) Variable level lifting platform for a cargo container handling crane
KR102050614B1 (ko) 선박의 라인들을 작동시키기 위한 견인 시스템
JP2790202B2 (ja) 船の荷積―荷下ろし用の貨物転送システムおよび貨物転送手段
US3411169A (en) Cargo ramp assembly
US3168955A (en) Apparatus for lightering cargo vessels
US4632622A (en) Marine cargo transfer device
EP2516250B1 (en) A crane on a vessel
CN1087250C (zh) 用于设置在船舶上的起重机的副桁架
US3468280A (en) Ramp for lst
US5028194A (en) Marine crane improvement
US7073673B2 (en) Wire rope reeving support system for cargo container handling gantry cranes
NL2007064C2 (en) Shear leg crane and transportation vessel.
NO137959B (no) Apparat for ekstrudering og/eller vikling av fiberarmerte, uendelig lange plastr¦r
US4864957A (en) Apparatus and method for launch and recovery of watercraft onto and from the deck of a host vessel
US2613001A (en) Cargo handling apparatus for ships
US3428194A (en) Ship barge handling cranes and beams
US7341014B2 (en) System for lifting and lowering a sailboat mast
US3143224A (en) Apparatus for the loading and unloading of ships
US3102642A (en) List compensating device
US4762240A (en) Articulating crane
US2222066A (en) Deck hoisting gear