Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
  • E06B9/0692—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising flexible sheets as closing screen
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
  • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
  • E06B9/0615—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the closing elements
  • E06B9/063—Bars or rods perpendicular to the closing direction
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
  • E06B9/0607—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position
  • E06B9/0646—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position
  • E06B9/0653—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising a plurality of similar rigid closing elements movable to a storage position characterised by the relative arrangement of the closing elements in the stored position stored side by side in the closing plane
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/62—Counterweighting arrangements
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/08—Roll-type closures
  • E06B9/11—Roller shutters
  • E06B9/13—Roller shutters with closing members of one piece, e.g. of corrugated sheet metal
  • E06B2009/135—Horizontal shutter reinforcements

Definitions

• the invention relates to a door, particularly for industrial purposes, as stated in the introduction to Claim 1.
• the main object ofthe invention is to provide a door based on the technology of
• a still further object ofthe invention is to provide a door which may also be used in inclined walls and horizontal ceilings.
• the invention The basic features ofthe invention is described in claim 1, the characterizing clause stating the novel features. Test and experiments have shown that even the largest doors which have been built, can have lowering and raising speeds of 0,6 m/sec.
• the arrangement ofthe invention provides a particularly advantageous power transfer with a simple attachment to the hoisting equipment.
• the balancing ofthe weights in the components removes the need for complicated and expensive safety equipment.
• Prior art safety equipment has included centrifugal brakes which engage when exceeding a predetermined rotational speed at lowering, or spring loaded clamping arrangements which engage the lower beam when a hoist line breaks.
• claims 2-10 further advantageous features are stated. Details of these features and their function will appear from the examples described below.
• Fig. 1 shows a schematical front view of an embodiment ofthe invention, with two counter weights
• FIG. 2 shows a corresponding plan view ofthe door in Fig. 1
• Fig. 3 shows a side view ofthe hoist drum.
• Figure 1 shows a fabric door with a door leaf 1 1 which may be prepared according to US-Patent Specification No. 5,301,732, engaging a guide profile 12 on each side ofthe doorway.
• the door leaf 1 1 comprises in this embodiment four horizontal beams or lateral braces 13, 14, 15, 16, seen from the bottom and upwards.
• the lateral braces 13-16 are provided with rollers (not illustrated) fitted at each end, that are coupled with equivalent grooves in the guide profile 12.
• a fabric 17 is attached in an appropriate manner, that can either be one continous sheet or joined pieces for each lateral brace.
• the door leaf 1 1 is covered on the internal side by a second layer fabric 17, to create a layer of air between the two fabric sheets, which can improve the thermal insulation ofthe door.
• the lateral braces 13-16 can be designed as appropriate They can be, but not restricted to, lattice braces, struts or other forms of support, made of light weigth materials, steel or composites. Separate hoisting lines or hoisting belts 19-22 provided for each lateral brace 13-16 respectively, are used to raise the individual lateral brace 13-16
• Each hoist line 19 for the lowermost lateral brace is guided over a pulley 23 located at the upper edge ofthe doorway and from there it extends to a line or hoisting drum 24 arranged centrally at the upper edge ofthe doorway and with power transmission from an electric motor 25 (Fig. 2) over a bevelled gear 26.
• the hoisting line 20 for the second lowermost lateral brace is guided from a pulley 27 at the second lowest lateral brace 14 and upward to an attachment point at the next higher lateral brace 15. In this way, a transmission which is raising both lateral braces 13 and 14 to the upper edge ofthe doorway by the hoisting ofthe hoisting lines 19, 20 is achieved.
• the hoisting lines 21 and 22 ofthe two upper lateral braces 15 and 16 guided over an increasing number pulleys to reduce the raising distance.
• the hoisting lines or belts can also be attached to one another or to a certain number of lateral braces, depending on the height ofthe door and the total number of sections.
• the hoisting drum 24 is divided into several chambers with inte ⁇ osed flanches 28, but with a common core diameter.
• the hoisting drum 24 is arranged for hoisting lines or hoisting belts 29, 30 from two counterweigths 31 and 32, e.g. of metal, arranged on each side ofthe door, on the outer side ofthe guide profile 12.
• the arrangement ofthe door demands space for accomodating the counterweights 31, 32 on the side ofthe guide profile
• Each hoisting line 29 and 30 is guided over a pulley 33 and 34 respectively, at the upper end of each guide profile 12 and into a section 35 ofthe hoisting drum 24. By placing the section 35 centrally, the momentum ofthe two hoisting lines relative to the journalling ofthe hoisting drum 24 is balanced.
• a tensioned line 36, 37 extends down to pulleys 38, 39 and from there on to attachment points 40, 41 at the lower side of the lowermost lateral brace 13
• the pulling lines 36, 37 are resiliently attached at the lower side of the counterweights 31, 32.
• the counterweights may be 50% ofthe weight ofthe movable parts ofthe door, depending on the transmission ratio ofthe hoisting lines 19-22
• the door leaf will then be in balance with the counterweight in its central position. This will make a favourable base for increasing the speed ofthe movement ofthe door leaf.
• the invention will allow a raising and lowering velocity of approximately 0,6 m/sec even for the largest doors now being built. These balancing characteristic remove the need for complicated and expensive safety equipment for stopping a sudden door drop. On prior art doors this may be centrifugal brakes which engage if the rotational speed exceeds a predetermined rate at lowering, or a springloaded clamping arrangement which engages the lowermost lateral brace at hoisting belt failure.
• the speed ofthe door closing may be restricted if underpressure arises between the fabrics.
• the invention provides a substantial improvement the "high speed door” area. It also means that it is now possible to manufacture large high speed operation doors which will withstand substantial wind pressure.
• the use ofthe downward pulling arrangement will be particularly advantagous when the door according to the invention is opened or closed under high wind pressure. In such cases the wind pressure may create a braking effect against the guiding profiles 12. Fo ced opening will then be necessary.
• the hoist drum 24 may be arranged in a carrying beam or a motor mounting beam 42 which is pre-manufactured with the pulleys and fastening elements for the motor 25 and which is adapted to be mounted at the upper end ofthe guiding profiles 12.
• the motor mounting beam 42 may be a lattice girder beam. It enables the substantial reduction ofthe installing time of a door. When the motor mounting beam 42 is provided as a part ofthe building structure, the hoisting equipment and the counterweights can easily be mounted with screw bolts, (not illustrated).
• the lines in the above example may be replaced with belts, e.g. of polyester or polyamide.
• the line forces may be balanced with the door leaf in its central position, i.e. with all sections ofthe winch drum half filled and the equal arm of force.
• a balanced door may therefore be opened or closed to central position when it is released from an end position without application of external power.
• This is a favourable base for applying a motor for forced closing or opening.
• the hoisting lines or belts 29, 30 for the counterweights 31, 32 With higher gauge than the belts from the door section, it is possible to have the door to open or to close automatically when the motor brake is released. This may occur at a power supply failure. Corresponding results can be obtained by providing different winding diameters for the hoisting lines and counterweight lines respectively in the hoist drum. It may also be provided by increasing the size ofthe counterweights, to increase the impact ofthe counterweights to substantially more than 50% ofthe momentum ofthe door, as stated above. In an alternative embodiment the hoisting lines 19 are guided over pulleys on the lowermost lateral brace and upward to an attachment in the second lateral brace, corresponding to the teaching of US-Patent Specification No. 5,301,732.

Landscapes

• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Elevator Door Apparatuses (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Control Of Stepping Motors (AREA)
• Junction Field-Effect Transistors (AREA)
• Power-Operated Mechanisms For Wings (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=19898699

Family Applications (1)

Country Status (7)

Families Citing this family (5)

Family Cites Families (7)

• 1995
  • 1995-10-27 NO NO954297A patent/NO300701B1/no not_active IP Right Cessation
• 1996
  • 1996-10-25 JP JP9516508A patent/JPH11513767A/ja active Pending
  • 1996-10-25 EP EP96937592A patent/EP0858545A1/en not_active Withdrawn
  • 1996-10-25 CN CN96197905A patent/CN1200783A/zh active Pending
  • 1996-10-25 KR KR1019980703008A patent/KR19990067068A/ko not_active Application Discontinuation
  • 1996-10-25 AU AU75094/96A patent/AU711763B2/en not_active Ceased
  • 1996-10-25 WO PCT/NO1996/000252 patent/WO1997015745A1/en not_active Application Discontinuation

Non-Patent Citations (1)

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