WO2017009973A1 - エレベータ装置 - Google Patents

エレベータ装置 Download PDF

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Publication number
WO2017009973A1
WO2017009973A1 PCT/JP2015/070270 JP2015070270W WO2017009973A1 WO 2017009973 A1 WO2017009973 A1 WO 2017009973A1 JP 2015070270 W JP2015070270 W JP 2015070270W WO 2017009973 A1 WO2017009973 A1 WO 2017009973A1
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WO
WIPO (PCT)
Prior art keywords
handrail
car
stopper
movable
fixed
Prior art date
Application number
PCT/JP2015/070270
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
丸山　直之
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2017528074A priority Critical patent/JP6351851B2/ja
Priority to PCT/JP2015/070270 priority patent/WO2017009973A1/ja
Priority to DE112015006696.9T priority patent/DE112015006696T5/de
Priority to CN201580081626.2A priority patent/CN107835781B/zh
Publication of WO2017009973A1 publication Critical patent/WO2017009973A1/ja

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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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0081—Safety of maintenance personnel by preventing falling by means of safety fences or handrails, being operable or not, mounted on top of the elevator car

Definitions

  • This invention relates to an elevator apparatus in which a handrail is provided on the upper surface of a car.
  • an elevator apparatus in which a hoistway bulkhead extending from the vicinity of the top of the hoistway to the vicinity of the bottom is arranged in the hoistway and the hoistway is partitioned into a car hoistway and a counterweight hoistway.
  • a hoistway bulkhead extending from the vicinity of the top of the hoistway to the vicinity of the bottom is arranged in the hoistway and the hoistway is partitioned into a car hoistway and a counterweight hoistway.
  • the horizontal distance between the inner wall of the hoistway and the outer edge of the car canopy exceeds 300 mm. It is stipulated that a handrail be provided on the car. Furthermore, according to EN81-20 / 50, when the horizontal distance between the inner edge of the car handrail and the inner wall surface in the hoistway is 500 mm or less, the height of the car handrail should be at least 700 mm or more.
  • the height of the upper handrail must be 1100 mm or more.
  • the height of the hoistway increases correspondingly in order to secure the overhead dimension of the hoistway, and the height dimension of the hoistway increases.
  • the present invention has been made to solve the above-described problems, and to obtain an elevator apparatus capable of ensuring safety on a car at a low cost while preventing expansion of a hoistway. With the goal.
  • the elevator apparatus includes a car that can move in the vertical direction in the hoistway, a car upper handrail provided on the upper surface of the car, and a trigger member that is fixed in the hoistway.
  • a handrail height variable portion There is a handrail height variable portion, and the handrail height variable portion is provided in the fixed handrail portion fixed to the upper surface of the car, the movable handrail portion provided at the upper end portion of the fixed handrail portion, and the movable handrail portion.
  • the movable handrail portion is displaceable between an upright position that stands on the upper end portion of the fixed handrail portion and a fall position that falls on the upper end portion of the fixed handrail portion.
  • the movable handrail When the cage moves upward and the engagement mechanism is pushed down by the trigger member, the movable handrail is displaced from the upright position to the fall position, and when the movable handrail is in the fall position, the car is raised. When viewed from above, the movable handrail protrudes outside the cage area To have.
  • the horizontal distance from the inner wall surface of the hoistway to the handrail height varying portion can be reduced by moving the movable handrail portion to the fall position by the trigger member, and The height dimension of the handrail height varying portion from the upper surface can be reduced.
  • safety on the car can be secured at low cost while preventing the hoistway from expanding.
  • FIG. 1 is an upper side view showing an elevator according to Embodiment 1 of the present invention. It is a top view which shows the cage
  • FIG. 1 is an upper side view showing an elevator according to Embodiment 1 of the present invention.
  • FIG. 2 is a top view showing the car 2 of FIG. FIG. 1 shows a state where the car is stopped on the top floor.
  • a car 2 and a counterweight 3 are provided in a hoistway 1 so as to be movable in the vertical direction.
  • the car 2 and the counterweight 3 move up and down in the hoistway 1 by the driving force of a driving device (not shown) installed in the hoistway 1.
  • the car 2 has a car room having a bottom surface 2a, a top surface 2b, a front surface 2c, a back surface 2d, and a pair of side surfaces 2e and 2f.
  • a car doorway that is opened and closed by a car door is provided on the front surface 2c of the car 2.
  • the hoistway 1 is formed with a first inner wall surface 1a, a second inner wall surface 1b, and a third inner wall surface 1c.
  • the car 2 has one side surface 2e opposed to the first inner wall surface 1a, the other side surface 2f opposed to the second inner wall surface 1b, and the back surface 2d opposed to the third inner wall surface 1c. Is placed inside.
  • the counterweight 3 is disposed in a space between the rear surface 2d of the car 2 and the third inner wall surface 1c when the hoistway 1 is viewed from above. That is, the elevator in the present embodiment is an elevator that falls after the counterweight.
  • a pair of car guide rails 4 and a pair of counterweight guide rails 5 are respectively installed along the vertical direction.
  • a car 2 exists between the pair of car guide rails 4, and a counterweight 3 exists between the pair of counterweight guide rails 5.
  • one of the car guide rails 4 is disposed between one side surface 2e of the car 2 and the first inner wall surface 1a, and the other car guide rail 4 is disposed on the other side of the car 2.
  • a hall entrance 7 that connects the hoistway 1 and the hall 6.
  • the landing entrance 7 is opened and closed by a landing door.
  • the car entrance and the hall entrance 7 facing each other are opened at the same time, so that passengers can get on and off between the hall 6 and the car 2.
  • the operation of the elevator is controlled by a control device (not shown) installed in the hoistway 1.
  • the operation mode of the elevator can be switched between a normal operation mode in which normal service operation is performed and a maintenance operation mode in which the car 2 is moved at a lower speed than in the normal operation mode.
  • the operation mode of the elevator is switched by operating a switch (not shown) provided at a position near the landing 6 on the upper surface 2b of the car 2.
  • a maintenance worker may perform maintenance work on equipment in the hoistway 1 while riding on the upper surface 2b of the car 2.
  • a car operation section for maintenance (not shown) is provided on the upper surface 2b of the car 2.
  • a maintenance worker riding on the upper surface 2b of the car 2 can move the car 2 at a low speed by operating the operation unit on the car at the time of maintenance when the landing doorway 7 is closed in the maintenance operation mode. .
  • a car upper handrail 9 is provided on the upper surface 2 b of the car 2.
  • the car upper handrail 9 has a pair of handrail height variable portions 11 that can change the height dimension from the upper surface 2 b of the car 2.
  • the first safety reference distance is 300 mm, for example, if the horizontal distance from the inner wall surface of the hoistway 1 to the opposing surface of the car 2 is equal to or less than the first safety reference distance, the inner wall surface of the hoistway 1 Since the clearance between the car 2 and the car 2 is reduced, it is possible to ensure the safety of maintenance workers riding on the car 2 on the upper surface 2b even if the installation of the car handrail 9 on the upper surface 2b of the car 2 is omitted. it can.
  • the horizontal distance from the inner wall surface of the hoistway 1 to the opposing surface of the car 2 is larger than the first safety reference distance, the safety of the maintenance worker riding on the upper surface 2b of the car 2 is improved. In order to ensure, it is necessary to provide the car upper handrail 9 on the upper surface 2 b of the car 2 so as to face the inner wall surface of the hoistway 1.
  • the horizontal distance L1 from the first inner wall surface 1a to one side surface 2e of the car 2 is larger than the first safety reference distance (for example, 300 mm), and the second inner wall surface 1b to the car.
  • the horizontal distance L2 to the other side surface 2f of 2 and the horizontal distance L3 from the third inner wall surface 1c to the rear surface 2d of the car 2 are equal to or less than the first safety reference distance (for example, 300 mm). .
  • a pair of handrail height varying portions 11 facing only the first inner wall surface 1a is provided on the upper surface 2b of the car 2, and the first The car upper handrail 9 is not provided at a position facing the second inner wall surfaces 1b and 1c.
  • the pair of handrail height varying portions 11 are arranged away from each other in the direction along the first inner wall surface 1 a when the car 2 is viewed from above.
  • One car guide rail 4 is located between the pair of handrail height varying portions 11 in the direction along the first inner wall surface 1a when the car 2 is viewed from above.
  • a horizontal distance L4 from each of the handrail height varying portions 11 to one of the car guide rails 4 is equal to or less than the first safety reference distance.
  • FIG. 3 is an enlarged view showing the handrail height varying portion 11 of FIG.
  • the handrail height varying portion 11 is provided on the fixed handrail portion 12 fixed to the upper surface 2 b of the car 2, the movable handrail portion 13 provided on the upper end portion of the fixed handrail portion 12, and the movable handrail portion 13.
  • Engaging mechanism portion 14 is provided on the fixed handrail portion 12 fixed to the upper surface 2 b of the car 2, the movable handrail portion 13 provided on the upper end portion of the fixed handrail portion 12, and the movable handrail portion 13.
  • the fixed handrail portion 12 is disposed along the first inner wall surface 1a.
  • the height of the fixed handrail portion 12 from the upper surface 2b of the car 2 is a dimension of 700 mm or more and less than 1100 mm.
  • a horizontal shaft 15 along the first inner wall surface 1 a is provided at the upper end portion of the fixed handrail portion 12.
  • the movable handrail portion 13 is rotatable about a horizontal axis 15. Further, the movable handrail portion 13 is rotated with respect to the fixed handrail portion 12 about the horizontal axis 15, so that the movable handrail portion 13 rises from the upper end portion of the fixed handrail portion 12 and the upper end portion of the fixed handrail portion 12. It is possible to displace between the collapsed position.
  • the movable handrail portion 13 when it is in the standing position is disposed along the vertical direction
  • the movable handrail portion 13 when it is in the collapsed position is disposed along the horizontal direction.
  • the dimension of the movable handrail portion 13 in the direction orthogonal to the axis of the horizontal axis 15 is about 400 mm.
  • the movable handrail portion 13 When the movable handrail portion 13 is displaced from the standing position to the fall position, the movable handrail portion 13 is rotated around the horizontal axis 15 in a direction in which the upper end portion of the movable handrail portion 13 approaches the first inner wall surface 1a.
  • the height dimension of the handrail height varying portion 11 from the upper surface 2b of the car 2 changes when the movable handrail portion 13 is displaced between the standing position and the falling position. That is, the state of the handrail height varying portion 11 is a high handrail state where the height of the car 2 from the upper surface 2b of the car 2 becomes the first dimension H1 when the movable handrail portion 13 is in the standing position, and the movable handrail portion. It becomes possible to change between a low handrail state in which the position 13 is a tilted position and the height dimension from the upper surface 2b of the car 2 becomes the second dimension H2 (FIG. 10) smaller than the first dimension H1. ing.
  • the first dimension H1 of the handrail height varying part 11 is set to a dimension of 1100 mm or more
  • the second dimension H2 of the handrail height varying part 11 is set to a dimension of 700 mm or more and less than 1100 mm.
  • the movable handrail portion 13 When the movable handrail portion 13 is in the upright position, when the car 2 is viewed from above, as shown in FIG. 2, the movable handrail portion 13 is within the region of the car 2, and the engagement mechanism portion 14 is fixed to the fixed handrail. It protrudes out of the region of the car 2 from the portion 12 toward the first inner wall surface 1a.
  • the movable handrail portion 13 When the movable handrail portion 13 is in the collapsed position, when the car 2 is viewed from above, the movable handrail portion 13 protrudes from the fixed handrail portion 12 toward the first inner wall surface 1a outside the region of the car 2, and The combined mechanism 14 is within the area of the car 2. Accordingly, the horizontal distance from the movable handrail portion 13 to the first inner wall surface 1a when in the standing position is smaller than the horizontal distance from the movable handrail portion 13 to the first inner wall surface 1a when in the collapsed position. Become.
  • the second safety reference distance is set to, for example, 500 mm, which is larger than the first safety reference distance
  • the horizontal distance from the handrail height varying portion 11 to the first inner wall surface 1a is larger than the second safety reference distance.
  • the height dimension of the handrail height varying portion 11 needs to be 1100 mm or more.
  • the horizontal distance from the handrail height varying portion 11 to the first inner wall surface 1a is equal to or less than the second safety reference distance, the height dimension of the handrail height varying portion 11 is 700 mm or more, Even if the dimensions are reduced to less than 1100 mm, the safety of maintenance workers can be ensured.
  • the horizontal distance from the handrail height varying portion 11 to the first inner wall surface 1a is larger than the second safety reference distance (for example, 500 mm).
  • the second safety reference distance for example, 500 mm.
  • the horizontal distance from the handrail height varying portion 11 to the first inner wall surface 1a is a second safety reference distance (for example, 300 mm) or less.
  • the distance is L6.
  • the horizontal distance from the handrail height varying portion 11 to the first inner wall surface 1a becomes the first distance L5 that is larger than 500 mm.
  • the state of the handrail height varying portion 11 can be ensured to be a high handrail state.
  • the height dimension of the handrail height varying portion 11 becomes the second dimension H2 of 700 mm or more and less than 1100 mm, and the state of the handrail height varying portion 11 is reached.
  • the horizontal distance from the handrail height varying portion 11 to the first inner wall surface 1a is ensured to be the second distance L6 that is not more than the first safety reference distance (for example, 300 mm). Can do. Therefore, in this example, the safety of the maintenance worker riding on the upper surface 2b of the car 2 is ensured regardless of whether the movable handrail portion 13 is in the standing position or the falling position.
  • the movable handrail portion 13 includes a handrail frame 13a having a space inside, and a crosspiece 13b that is an intermediate member disposed in the space inside the handrail frame 13a and fixed to the handrail frame 13a. is doing.
  • the handrail frame 13a has a pair of vertical frame members provided in the fixed handrail portion 12, and a horizontal frame member that couples the pair of vertical frame members to each other.
  • the crosspiece 13b is fixed between a pair of vertical frame members, and is disposed in parallel with the horizontal frame member of the handrail frame 13a.
  • each dimension of the plurality of space portions partitioned by the rails 13b in the handrail frame 13a is equal to or less than a first safety reference distance (for example, 300 mm) in the longitudinal direction of the vertical frame member of the handrail frame 13a. It is a dimension.
  • a plurality of trigger members 16 respectively corresponding to the handrail height varying portions 11 are fixed.
  • one trigger member 16 corresponding to one handrail height varying portion 11 is fixed to one car guide rail 4, and the other trigger member 16 corresponding to the other handrail height varying portion 11 is one. It is fixed to the counterweight guide rail 5.
  • Each trigger member 16 is a rod-like member disposed horizontally along the first inner wall surface 1a. Further, as shown in FIG. 1, each trigger member 16 is separated above the position of the engagement mechanism portion 14 when the movable handrail portion 13 is in the standing position and the car 2 is stopped on the top floor. Placed in position. Thereby, the engagement mechanism part 14 does not hit the trigger member 16 when the normal service operation of the elevator is performed.
  • each engagement mechanism portion 14 individually intersects with each trigger member 16 as shown in FIG. Thereby, when the car 2 moves upward from the stop position on the uppermost floor, the engagement mechanism portion 14 comes into contact with the trigger member 16.
  • the movable handrail portion 13 is pivoted about the horizontal shaft 15 and displaced from the standing position to the fall position when the engagement mechanism portion 14 is pushed down by the trigger member 16 by the upward movement of the car 2.
  • FIG. 4 is an enlarged view showing the engagement mechanism portion 14 of FIG.
  • the engagement mechanism portion 14 is provided with a rod-shaped attachment arm 17 fixed to the movable handrail portion 13, a rod-shaped stopper 18 provided rotatably on the attachment arm 17, and a rotation provided on the attachment arm 17. And a lever 19 that contacts the stopper 18.
  • the mounting arm 17 protrudes from the lower part of the movable handrail part 13 in a direction intersecting (in this example, orthogonal) with a plane including the handrail frame 13a and the crosspiece 13b of the movable handrail part 13.
  • a stopper shaft 20 parallel to the horizontal shaft 15 is provided at an intermediate portion of the mounting arm 17.
  • a lever shaft 21 parallel to the stopper shaft 20 is provided at the tip of the mounting arm 17.
  • the stopper shaft 20 is provided with one end of the stopper 18.
  • the stopper 18 is rotatable about the stopper shaft 20.
  • a stopper receiving portion 22 that receives the other end of the stopper 18 is provided on the upper portion of the fixed handrail portion 12.
  • the stopper receiving portion 22 is a stepped portion provided on the upper side surface of the fixed handrail portion 12. Displacement of the movable handrail portion 13 from the standing position to the tilted position is prevented by receiving the stopper 18 with the stopper receiving portion 22, and is permitted when the stopper 18 is detached from the stopper receiving portion 22.
  • the lever shaft 21 is provided with a lever 19.
  • the lever 19 is rotatable about the lever shaft 21.
  • the lever 19 includes a shaft mounting portion 23 provided on the lever shaft 21, a lever main body portion 24 protruding from the shaft mounting portion 23 in a direction away from the stopper shaft 20, and a shaft mounting portion in a direction approaching the stopper shaft 20. And a stopper pressing portion 25 projecting from 23.
  • the distal end portion of the lever main body portion 24 protrudes to the outside closer to the first inner wall surface 1 a than the distal end portion of the mounting arm 17. Further, the lever main body portion 24 is formed with a trigger contact surface 24a and a handrail contact surface 24b inclined with respect to the trigger contact surface 24a.
  • the trigger member 16 hits the trigger contact surface 24a as the car 2 moves further upward beyond the stop position on the top floor.
  • the lever main body 24 is pushed down with respect to the mounting arm 17 by moving the car 2 upward while bringing the trigger contact surface 24 a into contact with the trigger member 16.
  • the length of the stopper pressing portion 25 is longer than the length of the lever main body portion 24.
  • the stopper pressing portion 25 is inclined with respect to the trigger contact surface 24 a of the lever main body portion 24.
  • the tip end portion of the stopper pressing portion 25 is in contact with the intermediate portion of the stopper 18, and the horizontal state of the trigger contact surface 24a is maintained.
  • the stopper pushing portion 25 is formed on the stopper shaft 20 while pushing the stopper 18 in the direction in which the stopper 18 is removed from the stopper receiving portion 22 (clockwise direction in FIG. 4). It rotates relative to the mounting arm 17 in the approaching direction.
  • the rotation of the lever 19 in the direction in which the lever main body 24 is pushed down stops when the stopper pressing portion 25 engages with the stopper shaft 20 via the stopper 18.
  • the position of the movable handrail portion 13 is held at the fall position by receiving the engagement mechanism portion 14 on the side surface of the fixed handrail portion 12.
  • the handrail contact surface 24b of the lever main body portion 24 contacts the side surface of the fixed handrail portion 12 so that the horizontal state of the movable handrail portion 13 is maintained.
  • each handrail height varying portion 11 is the first dimension H1 of 1100 mm or more, and the state of each handrail height varying portion 11 is in the high handrail state. ing.
  • the operation panel of the hall 6 is operated on the top floor so that the upper surface 2b of the car 2 matches the height of the floor of the hall 6.
  • the hall entrance 7 is opened, and the changeover switch installed on the upper surface 2 b of the car 2 is operated from the hall 6.
  • the operation mode of the elevator is switched from the normal operation mode to the maintenance operation mode.
  • the maintenance worker changes from the landing 6 to the upper surface 2b of the car 2 while maintaining the stop position of the car 2.
  • the movable handrail portion 13 is held in the standing position, and the displacement of the movable handrail portion 13 from the standing position to the collapsed position is prevented by receiving the stopper 18 by the stopper receiving portion 22.
  • the state of each handrail height varying portion 11 is maintained in a high handrail state, and the safety of the maintenance worker riding on the upper surface 2b of the car 2 is ensured.
  • the open doorway 7 is closed, and then the car 2 is moved at a low speed by operating the operation unit on the car for maintenance. Thereby, the maintenance work of the maintenance worker with respect to the apparatus in the hoistway 1 is attained.
  • the maintenance worker when performing maintenance work on equipment installed near the top of the hoistway 1, the maintenance worker operates the car top operation part during maintenance and moves the car 2 to a position higher than the stop position on the top floor.
  • the engagement mechanism portion 14 of the handrail height varying portion 11 reaches the height of the trigger member 16
  • the trigger contact surface 24 a of the lever 19 hits the trigger member 16 from below.
  • the lever 19 rotates with respect to the mounting arm 17 while the lever body 24 is pushed down by the trigger member 16.
  • FIG. 5 is an enlarged view showing a state where the lever main body 24 of FIG. 4 is pushed down by the trigger member 16.
  • the stopper pushing portion 25 pushes the stopper 18, and the stopper 18 is moved from the stopper receiving portion 22 as shown in FIG. 5.
  • the state in which the displacement of the movable handrail portion 13 is blocked by the stopper 18 is released, and the displacement of the movable handrail portion 13 from the standing position to the fall position is allowed.
  • FIG. 6 is an enlarged view showing a state in which the stopper pressing portion 25 of FIG. 5 is engaged with the stopper shaft 20 via the stopper 18.
  • FIG. 7 is an enlarged view showing a state in which the movable handrail portion 13 of FIG. 6 is being displaced from the standing position to the falling position.
  • FIG. 8 is an enlarged view showing a state in which the movable handrail portion 13 of FIG. 7 has reached the fall position.
  • the lever 19 is further pushed down by the trigger member 16 together with the mounting arm 17 to move the movable handrail portion. 13 further rotates about the horizontal axis 15 toward the fall position.
  • the position of the center of gravity of the movable handrail portion 13 with respect to the horizontal shaft 15 changes, and the movable handrail portion 13 falls down due to its own weight and reaches a fall position.
  • the lever 19 is separated from the trigger member 16 by the rotation of the movable handrail portion 13, and the handrail contact surface 24 b of the lever 19 hits the side surface of the fixed handrail portion 12. Thereby, rotation by the dead weight of the movable handrail part 13 is prevented, and the horizontal state of the movable handrail part 13 is maintained.
  • the load from the movable handrail portion 13 is supported on the side surface of the fixed handrail portion 12 via the handrail contact surface 24b of the lever 19. Thereby, even if a load of a maintenance worker or the like is applied to the movable handrail portion 13 from above when the movable handrail portion 13 is in the collapsed position, the horizontal state of the movable handrail portion 13 is maintained.
  • the state of the handrail height varying portion 11 becomes a low handrail state, and the height dimension of the handrail height varying portion 11 is reduced to a second dimension H2 of 700 mm or more and less than 1100 mm.
  • the horizontal distance from the 1st inner wall surface 1a to the movable handrail part 13 becomes the 2nd distance L6 below a 1st safety reference distance (for example, 300 mm).
  • the maintenance worker riding on the upper surface 2b of the car 2 performs maintenance work on the equipment near the top of the hoistway 1.
  • the maintenance worker moves the car 2 downward at a low speed while operating the operation unit on the car for maintenance, and the upper surface 2b of the car 2 is, for example, the landing 6 on the uppermost floor. Stop the car 2 so that it matches the height of the floor.
  • the movable handrail 13 passes through the position of the trigger member 16. At this time, the movable handrail portion 13 hits the trigger member 16 from above and is pushed up by the trigger member 16 by the downward movement of the car 2.
  • FIG. 9 is an enlarged view showing a state in which the movable handrail portion 13 of FIG. 8 is pushed up by the trigger member 16.
  • the movable handrail portion 13 is pushed up by the trigger member 16 while the car 2 moves downward, the movable handrail portion 13 is inclined with respect to the horizontal plane, but is detached from the trigger member 16 before reaching the standing position. Thereby, the movable handrail part 13 falls down again by its own weight, and returns to a fall position.
  • FIG. 10 is an enlarged view showing a state where the movable handrail portion 13 of FIG. 9 is returned to the collapsed position.
  • the trigger member 16 is separated upward from the movable handrail portion 13, and the movable handrail portion 13 is in a horizontal state similar to that in FIG. 8. Thereafter, the car 2 moves downward in a state where the movable handrail portion 13 is returned to the collapsed position.
  • the maintenance worker stops the car 2 and then displaces the movable handrail portion 13 from the fall position to the standing position while lifting the movable handrail portion 13, and engages the other end of the stopper 18 with the stopper receiving portion 22. Combine. Thereby, the movable handrail part 13 is hold
  • the maintenance worker opens the hall entrance 7 on the top floor and transfers to the hall 6 from the upper surface 2b of the car 2.
  • the elevator maintenance operation is completed by operating the selector switch from the landing 6 to switch the elevator operation from the maintenance operation mode to the normal operation mode and closing the landing doorway 7.
  • the movable handrail portion 13 can be displaced between a standing position where the movable handrail portion 13 stands on the upper end portion of the fixed handrail portion 12 and a fall position where the movable handrail portion 12 is tilted with respect to the upper end portion of the fixed handrail portion 12.
  • the cage 2 moves upward and the engagement mechanism 14 is pushed down by the trigger member 16, the movable handrail 13 is displaced from the standing position to the fall position, so that the movable handrail 13 is held in the standing position.
  • the height dimension of the handrail height varying portion 11 from the upper surface 2b of the car 2 can be increased.
  • the height of the top rail of the hoistway 1 can be reduced as compared with the case where the height dimension of the car handrail 9 is fixed to the first dimension H1. Thereby, the expansion of the hoistway 1 in the height direction can be prevented while ensuring the safety of a maintenance worker riding on the upper surface 2b of the car 2. Moreover, since the handrail height variable part 11 becomes difficult to contact the top part of the hoistway 1, it is possible to prevent damage to the top part of the hoistway 1 and equipment in the hoistway 1.
  • the movable handrail portion 13 stands up during normal service operation of the elevator. Therefore, the movable handrail portion 13 can be prevented from obstructing the service operation of the elevator.
  • a stopper 18 is rotatably provided on the mounting arm 17 fixed to the movable handrail portion 13, and the stopper 18 is received by the stopper receiving portion 22 provided on the fixed handrail portion 12, whereby the movable handrail portion 13.
  • the displacement from the standing position to the fall position is prevented, and the displacement of the movable handrail portion 13 is allowed by the stopper 18 being removed from the stopper receiving portion 22, so that, for example, the maintenance worker is in the direction of arrow A in FIG.
  • the movable handrail portion 13 is pushed, the movable handrail portion 13 can be prevented from falling from the standing position to the falling position, and the movable handrail portion 13 can be held more reliably when in the standing position. Can do.
  • the lever 19 when the lever 19 is pushed down by the trigger member 16, the lever 19 rotates with respect to the mounting arm 17 while pushing the stopper 18 in a direction to remove from the stopper receiving portion 22, and engages with the stopper shaft 20 via the stopper 18. Accordingly, the rotation with respect to the mounting arm 17 is stopped, so that the stopper 18 can be more reliably removed from the stopper receiving portion 22 by the trigger member 16, and the movable handrail portion 13 after the stopper 18 is removed from the stopper receiving portion 22 can be removed.
  • the displacement operation can also be made smooth.
  • the engagement mechanism portion 14 can be realized with a simple configuration, and the cost of the handrail height variable portion 11 can be reduced.
  • the lever 19 is formed with a handrail contact surface 24b that contacts the side surface of the fixed handrail portion 12 when the movable handrail portion 13 is in the tilted position
  • the handrail contact surface 24b is formed on the side surface of the fixed handrail portion 12. The surface can be brought into contact with each other, and the horizontal state of the movable handrail portion 13 when in the fall position can be maintained.
  • the load from the movable handrail portion 13 can be supported on the side surface of the fixed handrail portion 12. Accordingly, even when a load such as a leaning of a maintenance worker is applied to the movable handrail portion 13 when it is in the collapsed position, the movable handrail portion 13 can be maintained in a horizontal state.
  • the movable handrail part 13 has the handrail frame 13a and the crosspiece 13b as an intermediate material arrange
  • the handrail height varying portion 11 facing the first inner wall surface 1a is provided on the upper surface 2b of the car 2, but the second inner wall surface 1b and the third inner wall surface 1c You may provide the handrail height variable part which opposes each in the upper surface 2b of the cage
  • the fixed handrail portion from which the movable handrail portion is removed may be fixed to the upper surface 2b of the car 2 so as to face each of the second inner wall surface 1b and the third inner wall surface 1c.
  • the crosspiece 13b is arranged as an intermediate material in the space in the handrail frame 13a in the movable handrail portion 13, but a plate material or a screen filling the space in the handrail frame 13a is arranged as an intermediate material, You may fix a board

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  • Cage And Drive Apparatuses For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
PCT/JP2015/070270 2015-07-15 2015-07-15 エレベータ装置 WO2017009973A1 (ja)

Priority Applications (4)

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JP2017528074A JP6351851B2 (ja) 2015-07-15 2015-07-15 エレベータ装置
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CN115108424A (zh) * 2021-03-17 2022-09-27 三菱电机株式会社 电梯的轿厢移动限制装置

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CN115108424A (zh) * 2021-03-17 2022-09-27 三菱电机株式会社 电梯的轿厢移动限制装置
CN115108424B (zh) * 2021-03-17 2023-05-30 三菱电机株式会社 电梯的轿厢移动限制装置

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CN107835781A (zh) 2018-03-23
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JPWO2017009973A1 (ja) 2017-09-28
DE112015006696T5 (de) 2018-03-29

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