Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06C—LADDERS
  • E06C1/00—Ladders in general
  • E06C1/02—Ladders in general with rigid longitudinal member or members
  • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
  • E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
• • 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
  • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic
  • E06C5/16—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic using mechanical transmission only, with or without fluid or other non-mechanical couplings or clutches
  • E06C5/20—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic using mechanical transmission only, with or without fluid or other non-mechanical couplings or clutches using hand-power
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06C—LADDERS
  • E06C7/00—Component parts, supporting parts, or accessories
  • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms

Definitions

• the invention relates to a collapsible, ladder-based work platform, in addition to the corresponding accessories, in order to be able to combine the work platform form with commercially available ladder types to form a height-adjustable implement.
• Similar platforms are already known as an integral part of mechanical ladders, such as fire brigade ladders and the so-called hall ladder. These platform ladders are normally used in an inclined position.
• a ladder-based work platform is known from the American patent specification * 29 61 060.
• the work platform is integrated into the head end of a ladder that can be telescopically extended by means of a cable winch.
• the ladder is mounted vertically on a mobile frame.
• the light-weight extension ladders with cable pull manufactured as standard have an ideal basic construction to create such a height-adjustable implement.
• the collapsible work platform can also be combined with single ladders, whether made of metal or wood, with the help of some additional parts described below.
• FIG. 1 shows a side view of the work platform in combination with a sliding ladder which can be pulled out by cable and which is erected on a mobile tubular frame.
• FIG. 2 shows the top view of FIG. 1.
• Figure 3 shows a side view of the hooks with which the work platform is hung in the rungs of the pull-out ladder.
• FIG. 4 shows the top view of FIG. 3.
• FIG. 5 shows the locking of a hook according to FIGS. 3 and 4 in the side view
• FIG. 6 shows FIG. 5 rotated by 90 °.
• Figures 7-9 illustrate the principle of the quick connector in 3 views.
• FIGS. 10 and 11 show joints for folding the work platform.
• FIGS. 12 and 13 show the end connection when the work platform is opened.
• FIG. 14 shows the end connection when the parts according to FIGS. 12 and 13 are completely connected to one another.
• Figure 15 shows the ladder-supported work platform in one of the possible work positions
• FIGS. 1 and 2 show the space-saving collapsible work platform in combination with a commercially available pull-out ladder which is mounted vertically on a mobile tubular frame. shown.
• This work platform mainly consists of square tubes that perform the following functions:
• the double hooks (3) and (4) are fastened, which are hooked into the rungs of the movable ladder part (5), and the work platform into the correct position fix to the ladder.
• the ends of the tube (l) are provided with bolts (91, 92) which form the fulcrum for the tubes (6) and (7) with a cross tube (12) and for the two inclined tubes (8) and (9).
• the two bolts (93. 94) of the tube (2) form the fulcrum door the tubes (l ⁇ ) and (ll). which are connected to a cross tube (13) which receives the hinges (14) for the bottom flap (15).
• the joints (16, 17) form a connection of the tubes (6) and (7) with the vertical tubes (18) and (19) directly next to the cross tube (12) (for details see FIGS. 10 and 11).
• the connection of the Vierkan ⁇ tube (8. 9). (10. 11) and (18, 19) with the quick connectors (20, 21) are shown in detail with FIGS. 12, 13 and 14.
• FIGS. 3 and 4 show the upper suspension (3) of the work platform, the flat bars (72) and (75) reaching behind the rung (76) and using the angle bars (73) and (74) the distance to the ladder and the lateral distance to the spars (77, 78) is formed so that the guide (79) and the other parts of the conductor mechanics are not blocked.
• the lower suspension (4) works accordingly.
• Figures 5 and 6 show the pawl (80). which automatically falls into the locked position after the hooks have been hooked in.
• the base plate (15) consists of a further and non-slip special plate. those with light metal angles (60). which provide protection against slipping of tools as well as reinforcement, is screwed and (see Figures 1 and 2) on the supports (32, 33) and (34, 35). which are attached to the lower edges of the pipes (10. 11).
• the horizontal tubes (6, 7) and (10. 11) serve to receive the extendable wall supports (24. 25) and (26. 27). which can be fixed at positions (28. 29) and (30, 31) (for details see Figures 11 and 12).
• the extendable wall supports (24, 25. 26, 27) can be pulled out at convenient support points in the building.
• the tubular frame (39) carries the structure described above on 4 lockable castors (47).
• the two horizontally arranged rollers (48) serve to transport the work platform more easily on walls.
• two tubular, pull-out supports (49) are in the tubular frame (39), which, after being pulled out, bring the entire body into a safe working position using the height-adjustable locking feet (50).
• the supports (49) are provided with a stop (51) which stops at the screws (52).
• the extended floor support can be locked at points (53) and (55), which is the same for both pairs of floor supports.
• the tubular frame (39) is designed so that supports such as (49) with (50) can also be inserted from the other side and secured with the screws (54). This means that the ladder-supported work platform can be used completely free-standing, for example for work on hall ceilings or on roof gutters of protruding roofs.
• the spar feet of the pull-out ladder (37) are inserted into two receptacles (38) which are connected to the mobile tubular frame (39) and secured by two tabs (40) which are screwed together through the bottom rung.
• the fixed part of the pull-out ladder (37) is connected to the frame (39) with two divergent struts (41, 42) from the mounting tube (44) on the head of the ladder part (37) via quick connections (43) without play.
• the length of the mounting tube (44) was such that the struts (41, 42) do not cross the displacement path of the work platform.
• the mounting tube (44) is screwed to the ladder (37) by means of two bolts (56) which are hooked into a rung on both sides by means of plastic bushings (46), through bores in (44) via nuts (45).
• extension ladder (37) With the base frame (39) and the struts (41, 42), it has proven to be expedient to first attach the tubular frame (39) to the lying ladder via the receptacle (38) with the tab (40) screw on and then attach the two struts (41, 42) via the quick connector (43). Now the work platform can be hung in the lower rungs of the pull-out ladder (5) if the lower half of the full extension area is required, or in the upper rungs if the upper half of the total ladder length is to be covered. There are therefore two suspension positions for the work platform, with which the entire work area of the ladder can be used.
• the assembled implement is now erected and can be moved as desired using the steering wheels (47).
• the ladder scaffold is secured by the brakes on the steering wheels (47) and the locking feet (50) and the work platform is pulled from the ground location to the desired working height using a rope.
• the user climbs the vertical ladder, lifts the bottom flap (15), which locks in the opened position (latch (57)).
• the user climbs over the rungs through the opened work platform to two rungs above the floor slab level and lets the open floor hatch open using a thin piece of rope (61) that holds the floor slab and can now enter the platform (15).
• the aus ⁇ drawable wall supports (24, 25) or (26, 27) the work platform at Be ⁇ may be supported on the building and thereby rendered free of fluctuations.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Ladders (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7751335

Family Applications (1)

Country Status (7)

Families Citing this family (7)

Family Cites Families (12)

• 1995
  • 1995-01-12 DE DE19500705A patent/DE19500705C2/de not_active Expired - Fee Related
• 1996
  • 1996-01-12 SK SK947-97A patent/SK94797A3/sk unknown
  • 1996-01-12 EP EP96920620A patent/EP0805908A2/de not_active Withdrawn
  • 1996-01-12 WO PCT/EP1996/000115 patent/WO1996021791A1/de not_active Application Discontinuation
  • 1996-01-12 CZ CZ972220A patent/CZ222097A3/cs unknown
  • 1996-01-12 AU AU43914/96A patent/AU4391496A/en not_active Abandoned
  • 1996-01-12 HU HU9801136A patent/HUP9801136A3/hu unknown

Non-Patent Citations (1)

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