Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
  • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
  • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
  • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
  • B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges

Definitions

• the invention relates to a braking device for an elevator with an elevator car and a counterweight, which can be moved along guide rails in an elevator shaft, the braking device on the
• a braking device for an elevator which stops the elevator car in an emergency.
• the elevator car drives a rotating speed limiter by means of an endless cable, which is blocked at a certain excess speed of the elevator car.
• the blocked speed limiter also blocks the endless cable, but the elevator car moves further down, the blocked endless cable connected to a release lever mechanism of the braking device engaging the braking device.
• Two guided wedges of the braking device are pushed upwards.
• the braking force is generated by friction between the wedges and the guide rail of the pull-out cabin.
• the braking force is dependent on the one hand on the friction of the wedges on the guide rail and on the other hand on a C-shaped compact spring assembly, on the ends of which guides are provided for the wedges.
• a disadvantage of the known device is that the spring assembly and the guides are cast in one piece.
• the spring assembly must be manufactured depending on the braking force to be applied, which makes the braking device more expensive.
• the invention seeks to remedy this.
• the invention as characterized in claim 1, solves the problem of avoiding the disadvantages of the known device and a braking device with a universal structure
• the braking device consists of a few different components. It is also advantageous that the braking device can be adapted to different braking forces with the same components.
• Braking device can thus be used without great effort for elevator cabins or counterweights with different masses to be braked.
• the braking device according to the invention offers the possibility of fine adjustment with regard to the braking force.
• the spring elements consist of easy-to-manufacture slats. Depending on the braking force, more or fewer plates can be used.
• FIG. 1 is an elevator car with the braking device according to the invention
• Fig. 4 is a section along the line A-A of Fig. 3 and
• Fig. 5 is a spatial representation of the support body with the
• the 1 shows an elevator car 1 which can be moved in an elevator shaft (not shown), the elevator car 1 being guided by means of guide rails 2 which extend above the shaft height.
• the elevator car 1 provided with a door 1.1 is supported by a support frame 3 with a lower yoke 4 and an upper yoke 5.
• the elevator car 1 drives, by means of an endless cable 7, a rotating speed limiter (not shown) which blocks in the downward direction at a certain excess speed of the elevator car 1.
• the blocked speed limiter also blocks that which is arranged in the shaft pit via a not shown Tension roller guided endless rope 7, however, the elevator car 1 moves further downward, the blocked endless rope 7 connected to a release lever mechanism 8 engaging the braking device 6.
• the release lever mechanism 8 connected to the endless cable 7 consists of an axis of rotation 8.1 on which an actuating fork 8.2 engaging the braking device 6 is arranged.
• the actuating fork 8.2 of the opposite braking device 6 is actuated by means of a connecting rod 8.3 arranged on the axis of rotation 8.1.
• the elevator car 1 can be shut down for emergencies in the upward direction.
• the braking device can also be arranged on the counterweight.
• Fig. 2 shows details of acting on a guide arm 2.1 of the guide rail 2 braking device 6.
• the braking device 6 comprises a arranged on the yoke 4.5 housing 9, which serves as a carrier for spring assemblies 10 and / or for adjusting assemblies 11.
• the housing 9 also serves as a carrier and guide for wedge guide elements 12, which in turn hold and guide brake wedges 13 with brake linings 14.
• a push rod 15 engages on the one hand on the brake wedge 13, on the other hand, the push rod 15 is articulated on the actuating fork 8.2.
• the modular spring assemblies 10 and the modular adjustment assemblies 11 are by means of one end Spring clip 16 is detachably connected to the wedge guide element 12, lugs 10.1 and 11.1 of the spring assemblies 10 and the adjusting assemblies 11 prevent the packets 10, 11 from slipping off the wedge guide elements 12.
• the packages 10, 11 are connected to one another at each end, for example by means of a setscrew 17 and nuts 17.1, first supports 12.2 of the wedge guide elements 12 and at least one second support 9.2 of the housing 9 holding the overall package consisting of spring packages 10 and adjustment packages 11.
• a spring assembly 10 consists of ten lamellae 10.2 of the same thickness and the same material.
• the geometrically somewhat smaller adjustment packages 11 in the example shown consist of three fins 11.2.
• the slats 10.2, 11.2 are punched out of sheet metal, for example. Other slat materials or different slat thicknesses are also possible.
• the slats 10.2, 11.2 can also have a different shape, deviating from the C-shape shown.
• the individual spring assemblies or adjustment assemblies are
• Braking device 6 can also have a different number of plates. Depending on the number of plates, material, plate thickness or plate shape, different spring constants can be generated, which have a direct effect on the braking force.
• the wedge guide element 12 is guided in the first grooves 9.1 of the housing 9 and has an extension 12.1.
• the brake wedge 13 is held in the rest position by means of the extension 12.1 and the push rod 15.
• the governor rope 7 is blocked by the overspeed detector.
• the actuating fork 8.2 on the push rod side in the direction of the braking device 6.
• the brake pads 14 are moved onto the guide limbs 2.1 of the guide rail 2. Due to the wedge-shaped arrangement of the wedge guide elements 12 and the friction between the brake pads 14 on the guide leg 2.1, the brake wedges 13 are moved into the braking device 6 and the
• the spring assemblies can be arranged on a support body 20, the, for example, C-shaped support body 20 acting on the wedge guide elements 12.
• the spring assemblies 21 consist of at least one lamella 21.1 and are inserted into grooves 22 in the supporting body 20. In the example shown, three grooves or three spring assemblies 21 are provided. More or fewer than three grooves 22 can also be provided, wherein the grooves 22 can also be of different widths.
• the spring assemblies 21 inserted into narrow grooves 22 can serve as adjustment assemblies.
• the support body 20 and the spring assemblies 21 are tensioned and the braking force is generated to stop the elevator car or the counterweight.
• Braking device 6 can be provided with one or more supporting bodies 20.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Maintenance And Inspection Apparatuses For Elevators (AREA)
• Braking Arrangements (AREA)
• Cage And Drive Apparatuses For Elevators (AREA)
• Valve Device For Special Equipments (AREA)

Priority Applications (1)

Applications Claiming Priority (4)

Publications (2)

Family

ID=8174717

Family Applications (1)

Country Status (17)

Cited By (1)

Families Citing this family (23)

Family Cites Families (15)

• 2001
  • 2001-05-23 ES ES01929161T patent/ES2225530T3/es not_active Expired - Lifetime
  • 2001-05-23 DE DE50103138T patent/DE50103138D1/de not_active Expired - Lifetime
  • 2001-05-23 CN CNB018100805A patent/CN1187252C/zh not_active Expired - Lifetime
  • 2001-05-23 MX MXPA02011600A patent/MXPA02011600A/es active IP Right Grant
  • 2001-05-23 PT PT01929161T patent/PT1294631E/pt unknown
  • 2001-05-23 EP EP01929161A patent/EP1294631B1/fr not_active Expired - Lifetime
  • 2001-05-23 BR BRPI0111068-3A patent/BR0111068B1/pt not_active IP Right Cessation
  • 2001-05-23 WO PCT/CH2001/000316 patent/WO2001089973A1/fr not_active Ceased
  • 2001-05-23 AT AT01929161T patent/ATE272561T1/de active
  • 2001-05-23 JP JP2001586169A patent/JP5399597B2/ja not_active Expired - Lifetime
  • 2001-05-23 NZ NZ522549A patent/NZ522549A/en not_active IP Right Cessation
  • 2001-05-23 DK DK01929161T patent/DK1294631T3/da active
  • 2001-05-23 CA CA002408024A patent/CA2408024C/fr not_active Expired - Lifetime
  • 2001-05-23 AU AU56045/01A patent/AU785130B2/en not_active Ceased
• 2002
  • 2002-10-25 NO NO20025127A patent/NO322036B1/no not_active IP Right Cessation
  • 2002-11-05 ZA ZA200208974A patent/ZA200208974B/en unknown
  • 2002-11-26 US US10/303,624 patent/US6823969B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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