EP0410215A1 - Echelle à tronçons supérieur et inférieur - Google Patents

Echelle à tronçons supérieur et inférieur Download PDF

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Publication number
EP0410215A1
EP0410215A1 EP90113312A EP90113312A EP0410215A1 EP 0410215 A1 EP0410215 A1 EP 0410215A1 EP 90113312 A EP90113312 A EP 90113312A EP 90113312 A EP90113312 A EP 90113312A EP 0410215 A1 EP0410215 A1 EP 0410215A1
Authority
EP
European Patent Office
Prior art keywords
ladder
rung
rung part
axis
guideway
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.)
Withdrawn
Application number
EP90113312A
Other languages
German (de)
English (en)
Inventor
Rolf Dipl.-Ing. Peiler
Wilfried Schmitt
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.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP0410215A1 publication Critical patent/EP0410215A1/fr
Withdrawn legal-status Critical Current

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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
    • B63B27/146—Pilot ladders or similar outboard ladders, e.g. bathing ladders; Pilot lifts
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • 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
    • B63B2027/141—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts telescopically extendable

Definitions

  • the invention relates to a ladder with an upper and a lower rung part, in particular a ladder for a vehicle.
  • a ladder is provided to reach a driver's cab, which in many cases is made up of several parts or is movable so that it can avoid an obstacle, which can occur particularly when working on a slope.
  • DE-OS-28 16 971 shows a ladder fixed to the driver's cab, the bottom rung of which is attached to the direction of travel by means of flexible straps.
  • the alternative is not sufficient for all applications.
  • EP-B1-0 065 580 discloses a hanging ladder, the bottom rung of which is formed by a pivotable bracket.
  • the bracket is immobile in the direction of travel and can only be folded up.
  • the last described ladder already has many advantages; however, it can only avoid an obstacle in one direction, it extends transversely to the stationary part in the transport position and can introduce undesirable torsional moments on it and has a space requirement in the transport position that should be reduced.
  • the object underlying the invention is seen in designing a ladder, in particular for climbing onto the driver or operating platform of a vehicle, which can avoid an obstacle in several directions with little construction effort. It would also be advantageous if it could also be brought into different positions for transport or maintenance purposes.
  • the lower, movable rung part can assume an inclination both forwards or backwards, and it can be displaced linearly in the guideway.
  • this lower rung section already has two more movement options than is the case with the ladder who was last appreciated.
  • the guideways can be integrated into the bars of the ladder or the rung part, or can be formed by brackets which are placed on the front or the back or the side surfaces of the bars.
  • the lower, movable rung part of the ladder can also be pivoted about the axis in the guideway, it can also be moved in a fourth direction, which can be used to transport or pull up the entire ladder - if it is pivotably attached.
  • the guideway is formed by one or more brackets with an underlying contact surface, for. B. on the spar, form a gap or a longitudinal slot.
  • two guideways that is to say two brackets, are each provided on a spar of the upper rung part or of the lower rung part, each of which accommodates the end regions of the axis.
  • a bracket can also be relatively wide and guide the axis in its central area so that it protrudes laterally and holds the lower rung part.
  • the guideway and the bracket would be located between the bars of the upper or lower rung part and preferably on the rear.
  • the axis need not be wider than the conductors or the distance between the guideways, because then in the tilted state of the lower rung part either the rung or one of the bars can enter the guideway.
  • a lock which may be spring-loaded, in the guideway to limit the movement of the lower rung part in the guideways makes it possible to protect the lower rung part from uncontrolled movements due to uneven road surfaces.
  • the lower rung section can be held with its axis and then pivoted to assume a transport position.
  • the bolt is used to fix the lower rung part in the transport position of the ladder.
  • the entire ladder with the lower rung part can be pivoted into a position in which no other people can get to the driver platform.
  • a ladder 4 is pivotally attached to a stationary frame 6 via an upper rung part 12.
  • the upper rung part 12 carries brackets 14 for movable connection to a lower, movable rung part 16, which is held over the brackets 14 and can be fixed by means of a bolt 18.
  • the fixed frame 6 is in a vehicle, for. B. a combine harvester, a forage harvester, a construction machine or the like from part of a driver's platform, not shown, on which the controls are attached for an operator. In current vehicle sizes, this driving platform is located approximately two meters above the contact area of the vehicle and can be reached with the aid of the ladder 4 in the present case.
  • a joint 8 and a stop 10 are provided on each side for pivotally accommodating the ladder 4 or its upper rung part 12.
  • the upper rung part 12 is bent from a sheet of metal in a U-shape and bent at the edges, the legs of the "U" each forming a spar 20.
  • three rungs 24 extend in an intermediate space 22 located between the spars 20 and are welded to the spars 20 at the ends.
  • the upper rung part 12 of each spar 20 with the joint 8 is pivotally attached to the frame 6 in the plane of the drawing in the counterclockwise direction of rotation and lies against the stop 10 in the position shown.
  • handles 28 are formed on the spars 20 in their upper region welded, which are pivotable with the ladder 4 and its upper rung part 12.
  • the length of the upper rung part 12 is dimensioned such that its lower end region is at a distance from the contact surface, which normally precludes a collision with obstacles.
  • the brackets 14 are welded or screwed to the inside of the spars 20 in the lower region of the upper rung part 12 and have a region 32 which runs parallel to the flanged edge of the spars 20 which acts as a contact surface 34. Legs 36, which are fastened to the bars 20 at separate locations, act on the region 32 at each end.
  • the area 32 does not run in a straight line in this exemplary embodiment but is indented towards the spar 20 in order to form a spring-loaded lock 38.
  • An essentially rectangular guideway 40 is formed between the region 32, the two legs 36 and the contact surface 34, the function of which is explained below.
  • the bracket 14 could also be formed in that flat iron bent twice in the same direction is welded or screwed to the inside of the spars 20.
  • the upper rung part 12 is assigned two supports 42, one of which is connected to one of the spars 20 and extends into the guide track 40 in its lower end region and thus limits it.
  • the lower rung part 16 is composed in this embodiment of two bars 20 'and also three rungs 24', the number of which is basically freely definable, provided that there are no structural requirements to the contrary.
  • the spars 20 'and the rungs 24' running at right angles thereto are welded together and each have the same thickness, which in turn corresponds almost to the width of the guideways 40, ie the distance between the contact surfaces 34 and the inside of the area 32.
  • the upper rung 24 ' forms an axis 46 which extends through the guideways 40 delimited by the brackets 14 and thus is movable between the support 42 and the upper leg 36. In its lowest position, shown in full lines in FIG. 1, it rests on the supports 42, which thus bear their weight.
  • the lock 38 which is mounted slightly above the supports 42, divides the guideways 40 into a long, upper and a short, lower section 48 and 50. It causes the lower rung part 16 only then from one to the other section 48 , 50 can pass if it is moved past the locks 38 while overcoming the spring force of the brackets 14, which is required to bend them outwards by the depth of the locks 38.
  • the locks 38 prevent the lower rung part 16 from sliding uncontrollably in the guideways 40 when there are small impacts, and on the other hand, the locks 38 define a pivot point about which the lower rung part 16 pivots upward, as will be explained later is, the entire conductor 4 is pivoted upwards about the joints 8.
  • an eyelet 52 is attached to the top of one of the spars 20 ', to which a rope (not shown) can be attached.
  • the bolt 18 takes the form of an -L-, the legs 54 and 56 of which end at their free ends in a ring eyelet 58.
  • the two legs 54, 56 form an angle of less than 90 °, namely approximately 75 ° to one another.
  • the ring eyelet 58 of the long leg 54 is penetrated by a screw 30 or a pin, which is held in the spar 20 of the upper rung part 12 and allows a pivoting movement of the bolt 18.
  • the diameter of the ring eyelet 58 located on the short leg 56 is dimensioned such that the operator can reach in with one finger in order to pivot the bolt 18 from one position to the other according to FIG.
  • the long leg 54 is chosen so long that it extends to the outer edge of the nearest rung 24 'of the lower rung part 16, the length of the short leg 56 corresponds to the height of this rung 24' at least, and the ring eyelet 58 located on it the screw 30 is bent. In this way, the bar 18 engages with part of the leg 54, the entire leg 56 and an arc piece of the eyelet 58, the rung 24 'to about 225 ° and holds it in the position shown in broken lines according to Figure 1.
  • the ladder 4 with its rung parts 12, 16 should enable the driver to ascend to the driver platform, they assume the position shown in the drawing in solid lines. Accordingly, the Upper rung part 12 on the stops 10, the lower rung part 16 sits with its axis 46 on the supports 42 and lies with its bars 20 'in some areas on the bars 20 of the ladder 12, and the latch 18 hangs down. The operator can reach the bottom rung 24 'of the rung part 16 and climb up over the other rungs 24, 24'.
  • the ladder 4 with its rung parts 16 is left in the state shown in the drawing while the vehicle is traveling and there is an obstacle in the path of the rung part 16, the following takes place, it being assumed that the lower rung part 16 is shown in FIG 2 approaches the obstacle from the right. As soon as the lower rung part 16 strikes the obstacle, the axle 46 lifts with its end region to the right in FIG the support 42 remains on. If the axis 46 assumes the length shown in the drawing, the right spar 20 'will enter the guideway 40 from a certain pivoting dimension, which it can because of its thickness. It is assumed that the obstacle is sufficiently stable to push the axis 46 past the lock 38. The same process, but in the opposite direction, takes place when the rung part 16 hits the obstacle from the left.
  • the lower rung part 16 moves more or less in the longitudinal direction of the upper rung part 12, ie parallel to this past the two locks 38, up to the stop on the upper legs 36 of the bracket 14.
  • the lower rung part 16 For transport purposes, or if the lower rung part 16 is to be prevented from hitting an obstacle, the lower rung part 16 is pivoted upward into the position shown in broken lines in FIG. 1, in which the axis 46 positions itself between the support 42 and maintains lock 38.
  • the lower rung part 16 can be pivoted upwards until its spars 20 'rest on the handles 28; then the bolt 18 in Figure 1 can be pivoted counterclockwise around the screw 30 until it engages behind the lower rung 24 '. Since the resilient short leg 56 must be pulled out to engage the rung 24 ', a spring force is formed, due to which the latch 18 holds the rung 24' firmly clasped.
  • the ladder 4 with the rung parts 12, 16 can be pivoted upwards about the joints 8, for which purpose a rope attached to the eyelet 52 is advantageously used.
  • the axis 46 will come to rest against the locks 38 and form the pivot axis for the lower rung part 16.
  • the lower rung part 16 will pivot completely upwards and finally take the ladder 4 itself around the joints 8 until it assumes its upper position indicated in FIG. 1.
  • the locks 38 improve the movement of the axis 46 within the guideways 40; in principle, however, the locks 38 could be dispensed with.
  • the guideway 40 runs between the bracket 14 and the contact surface 34; in other ways, not shown, the guideway 40 could extend the entire width between the bars 20 of the ladder 4, in which case it is formed by a wide sheet metal strip and part of the upper rung part 12, and the axis 46 on each side protrudes over the metal strip. In the same way, the guideways 40 could be formed between brackets and the spars 20 'of the lower rung part 16, on the back, while the axis 46 is attached to the upper rung part 12 projecting outwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ladders (AREA)
EP90113312A 1989-07-28 1990-07-12 Echelle à tronçons supérieur et inférieur Withdrawn EP0410215A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893925033 DE3925033A1 (de) 1989-07-28 1989-07-28 Leiter mit einem oberen und einem unteren sprossenteil
DE3925033 1989-07-28

Publications (1)

Publication Number Publication Date
EP0410215A1 true EP0410215A1 (fr) 1991-01-30

Family

ID=6386050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113312A Withdrawn EP0410215A1 (fr) 1989-07-28 1990-07-12 Echelle à tronçons supérieur et inférieur

Country Status (2)

Country Link
EP (1) EP0410215A1 (fr)
DE (1) DE3925033A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0941920A3 (fr) * 1998-03-12 2002-01-16 Horacio E. Bozzo Echelle pour bateau
US9775939B2 (en) 2002-05-24 2017-10-03 Baxter International Inc. Peritoneal dialysis systems and methods having graphical user interface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3140733A1 (fr) * 2022-10-17 2024-04-19 Kuhn Sas Machine agricole repliable avec une partie et un composant reliés cinématiquement entre eux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191006943A (en) * 1910-03-19 1910-11-17 Hadrian Bayley Improvements in Fire-escapes.
GB643222A (en) * 1948-06-18 1950-09-15 Die Casting Machine Tools Ltd Improvements in and relating to extending toy ladders
FR1223933A (fr) * 1959-05-12 1960-06-21 échelle pliante
US4139078A (en) * 1977-02-02 1979-02-13 Keller John R Ladder assembly
US4161997A (en) * 1975-05-16 1979-07-24 Norman Thomas W Self-storing step structure for vehicular mounting
DE3132294A1 (de) * 1981-08-14 1983-03-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München "ausfahrbare klappleiter, insbesondere fuer ladebruecken von lastfahrzeugen"

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008533A (en) * 1959-06-19 1961-11-14 Haberle Edwin Retractable tier mobile home step
DE2738128A1 (de) * 1977-08-24 1979-03-01 Schuster Dietrich Vorrichtung zum erklettern eines hoeheren niveaus von einem niedrigeren niveau aus und umgekehrt
DE3168269D1 (en) * 1981-05-22 1985-02-28 Deere & Co Access ladder for the operator's platform of a motor vehicle, particularly an agricultural combine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191006943A (en) * 1910-03-19 1910-11-17 Hadrian Bayley Improvements in Fire-escapes.
GB643222A (en) * 1948-06-18 1950-09-15 Die Casting Machine Tools Ltd Improvements in and relating to extending toy ladders
FR1223933A (fr) * 1959-05-12 1960-06-21 échelle pliante
US4161997A (en) * 1975-05-16 1979-07-24 Norman Thomas W Self-storing step structure for vehicular mounting
US4139078A (en) * 1977-02-02 1979-02-13 Keller John R Ladder assembly
DE3132294A1 (de) * 1981-08-14 1983-03-03 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München "ausfahrbare klappleiter, insbesondere fuer ladebruecken von lastfahrzeugen"

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0941920A3 (fr) * 1998-03-12 2002-01-16 Horacio E. Bozzo Echelle pour bateau
US9775939B2 (en) 2002-05-24 2017-10-03 Baxter International Inc. Peritoneal dialysis systems and methods having graphical user interface

Also Published As

Publication number Publication date
DE3925033A1 (de) 1991-02-07

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