JPWO2016103318A1 - Elevator equipment - Google Patents

Abstract

On the upper surface of the car, a car handrail having a handrail height variable portion is provided. The handrail height variable portion can be changed between a low handrail state where the height dimension is the first dimension and a high handrail state where the height dimension is the second dimension which is larger than the first dimension. ing. A hoistway fixing member having a plate portion is fixed in the hoistway. The plate portion is disposed between the inner wall surface of the hoistway and the handrail height variable portion when the hoistway is viewed from above. Assuming that the height above the floor of the landing on the specific floor by the first dimension is the reference height, the position of the upper end of the plate portion is lower than the upper end of the landing doorway provided on the specific floor and the reference height. The position of the lower end portion of the plate portion is a position higher than the upper end portion of the landing doorway provided on the lower adjacent floor of the specific floor and not more than the reference height.

Description

  The present invention relates to an elevator apparatus in which a handrail is provided on an upper surface of a car.

  2. Description of the Related Art Conventionally, 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. Are known. When the car is viewed from above, the distance between the hoistway partition and the peripheral edge of the car is within 300 mm. Thereby, in the conventional elevator apparatus, the fall of the maintenance worker who works on a car is aimed at (refer to patent documents 1).

International Publication No. 2014-013600

  However, since the installation range of the bulkhead in the hoistway becomes very long in the vertical direction, the cost (for example, material cost and installation cost) for installing the bulkhead in the hoistway in the hoistway becomes large. .

  Further, for example, EN81-20 / 50 of the European safety standard stipulates that a handrail is provided on a car when a person (for example, a maintenance worker or the like) gets on the car. Further, according to EN81-20 / 50, when the horizontal distance between the inner wall surface of the hoistway and the car handrail is 500 mm or less, the height of the car handrail is set to a range of 700 mm or more and less than 1100 mm. However, if the horizontal distance between the inner wall of the hoistway and the car handrail exceeds 500 mm, the height of the car handrail should be 1100 mm or more unless a fall prevention plate is installed in the hoistway. Must be. When the height dimension of the car handrail increases, 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.

  On the other hand, according to EN81-20 / 50, when the horizontal distance between the inner wall surface of the hoistway and the car handrail exceeds 500 mm, a fall prevention plate extending in the vertical direction is installed in the hoistway and the fall prevention plate. By setting the horizontal distance to the car upper handrail to 500 mm or less, the height dimension of the car upper handrail can be made lower than 1100 mm. However, in order to keep the horizontal distance between the fall prevention plate and the car handrail to 500 mm or less, it is necessary to install the fall prevention plate continuously from the upper end to the lower end of the hoistway. Similar to the inner partition wall, the cost for installing the fall prevention plate 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 according to the present invention has a car that can move in the vertical direction in the hoistway, a low handrail state in which the height dimension from the upper surface of the car is the first dimension, and the height dimension from the upper surface of the car is the first. A handrail height variable portion that can change between a high handrail state that is a second dimension that is larger than the above dimension, and the car upper handrail provided on the upper surface of the car and the hoistway are viewed from above. Sometimes it has a plate part arranged between the inner wall surface of the hoistway and the handrail height variable part, and is fixed in the hoistway corresponding to a specific floor which is at least one floor other than the lowest floor If the height above the landing floor of the specific floor is a reference height, the position of the upper end of the plate portion is the hall entrance / exit provided on the specific floor. It is a position lower than the upper end portion of the plate and a position higher than the reference height, and the position of the lower end portion of the plate portion is At a position higher than the upper end portion of the landing doorway provided below the adjacent floor Teikai, and reference is the height following positions.

  According to the elevator apparatus according to the present invention, when the maintenance worker changes between the upper surface of the car and the landing, the plate portion can be arranged closer to the handrail height variable portion than the inner wall surface of the hoistway, Even if the handrail height varying portion is in the low handrail state, the safety of the maintenance worker on the upper surface of the car can be ensured. Moreover, since the state of the handrail height variable portion can be changed to the high handrail state when the maintenance worker is on the top surface of the car, the maintenance worker can move the car while on the top surface of the car. In addition, the safety of maintenance workers on the upper surface of the car can be ensured. Furthermore, the state of the handrail height varying portion can be changed to the low handrail state during the normal operation mode, and the hoistway can be prevented from expanding in the height direction. Furthermore, it is not necessary to continuously install a plate from the upper end portion to the lower end portion of the hoistway, and the installation cost of the hoistway fixing member can be reduced. Therefore, it is possible to secure safety on the car at a low cost while preventing the hoistway from expanding.

1 is a side view showing an elevator according to Embodiment 1 of the present invention. It is an enlarged view which shows the cage | basket | car of FIG. It is a top view which shows the cage | basket | car of FIG. It is a side view which shows the state which enlarged the height dimension of the 2nd handrail structure part of FIG. It is a side view which shows a state when the upper surface of the cage | basket | car of FIG. 4 exists in the height of the floor of the top floor hall. It is a side view which shows the elevator apparatus by Embodiment 2 of this invention. It is a top view which shows the elevator apparatus of FIG. It is a side view which shows the state by which the upper surface of the cage | basket | car of FIG. 6 is arrange | positioned in the upper limit position of the boarding / alighting allowance range at the time of maintenance. It is a side view which shows the state by which the upper surface of the cage | basket | car of FIG. 6 is arrange | positioned in the position of the minimum of the boarding tolerance board | substrate at the time of maintenance. It is a side view which shows the elevator apparatus by Embodiment 3 of this invention. It is a top view which shows the elevator apparatus of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a side view showing an elevator according to Embodiment 1 of the present invention. FIG. 2 is an enlarged view showing the car 2 of FIG. 3 is a top view showing the car 2 of FIG. In the figure, 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 are moved up and down in the hoistway 1 by the driving force of a driving device (not shown) installed in the hoistway 1 (in this example, a hoisting machine).

  The car 2 has a car room having a bottom surface 2a, an upper surface 2b, a front surface 2c, a back surface 2d, and a pair of side surfaces 2e. A car entrance (not shown) that is opened and closed by a car door is provided on the front surface 2c of the car 2. In this example, when the hoistway 1 is viewed from above, the counterweight 3 is disposed on the back surface 2d side of the car 2. That is, the elevator in this example is an elevator of a falling type after counterweight.

  A pair of car guide rails 4 and a pair of counterweight guide rails 5 are installed in the hoistway 1 in the vertical direction. A car 2 is disposed between the pair of car guide rails 4, and a counterweight 3 is disposed between the pair of counterweight guide rails 5. One car guide rail 4 faces one side 2e of the car 2, and the other car guide rail 4 faces the other side 2e of the car 2 (FIG. 3). When the car 2 and the counterweight 3 move, the car 2 is guided to the pair of car guide rails 4 and the counterweight 3 is guided to the pair of counterweight guide rails 5.

  On each floor of the building, there is a hall entrance 7 that communicates the inside of the hoistway 1 and the hall 6. The landing entrance 7 is opened and closed by a landing door. In a state where the car 2 is stopped on the floor, the car entrance and the hall entrance 7 facing each other are opened at the same time, so that the boarding / exiting between the hall 6 and the car 2 is possible.

  The operation of the elevator is controlled by the control device 18. The operation mode of the elevator by the control device 18 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.

  At least one of the floors other than the lowest floor is a specific floor for maintenance work. On the specific floor, a landing manual operation section for moving the car 2 at a low speed is provided. In this example, all floors other than the lowest floor are designated as specific floors, and a landing manual operation section is provided at the landing 6 of each specific floor. The operation of the landing manual operation section is effective only when the landing entrance 7 is closed.

  In the elevator, a maintenance worker (that is, a person) 8 may perform maintenance work on the equipment in the hoistway 1 while riding on the upper surface 2 b of the car 2. When the maintenance worker 8 gets on the upper surface 2b of the car 2, the maintenance worker 8 operates the landing manual operation section on the specific floor while the landing doorway 7 is closed and moves the car 2 at a low speed. Adjust the stop position. Thereby, the upper surface 2b of the car 2 is stopped within the maintenance allowable boarding / alighting range corresponding to the specific floor. The allowable entry / exit range during maintenance is a range set in the vertical direction with reference to the floor height of the hall 6 on the specific floor. In this example, the range of 500 mm upward from the height of the floor of the hall 6 and 500 mm downward is the allowable boarding / exiting range for maintenance. In a state where the upper surface 2b of the car 2 is stopped within the maintenance allowable boarding / alighting range, the maintenance worker 8 can transfer between the landing 6 and the upper surface 2b of the car 2. After the car 2 is stopped, the maintenance worker opens the hall entrance 7 and operates the changeover switch from the hall 6 to switch the operation of the elevator from the normal operation mode to the maintenance operation mode. Thereafter, the maintenance worker 8 changes from the landing 6 on the specific floor to the upper surface 2b of the car 2.

  On the upper surface 2 b of the car 2, a car operation section for maintenance (not shown) is provided. The operation of the operation unit on the car for maintenance is invalid when the landing entrance 7 is open and in the normal operation mode, and is valid when the landing entrance 7 is closed in the maintenance operation mode. A maintenance worker 8 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. Become.

  A car upper handrail 9 is provided on the upper surface 2 b of the car 2. As shown in FIG. 3, when the car 2 is viewed from above, the car upper handrail 9 includes a pair of first handrail components 10 disposed along a pair of side surfaces 2e of the car 2, and a pair of first handrails. And a second handrail constituting portion 11 disposed along the back surface 2d of the car 2 between the respective end portions of the one handrail constituting portion 10.

  The front surface 2 c of the car 2 faces the inner wall surface of the hoistway 1 through a gap that is smaller than the horizontal distance between each of the rear surface 2 d and each side surface 2 e of the car 2 and the inner wall surface of the hoistway 1. The horizontal distance L1 between the inner wall surface of the hoistway 1 facing the back surface 2d of the car 2 and the second handrail component 11 is equal to the inner wall surface of the hoistway 1 facing the side surface 2e of the car 2 and the first handrail. It is larger than the horizontal distance L2 between the components 10.

  In this example, the horizontal distance L1 is larger than a safety reference distance (for example, 500 mm) that serves as a reference for preventing the car 2 from falling. In this example, the horizontal distance L2 is a distance equal to or less than a safety reference distance (for example, 500 mm).

  Here, when the horizontal distance from the car upper handrail 9 to the inner wall surface of the hoistway 1 is equal to or less than the safety reference distance, even if the height dimension of the car upper handrail 9 is small (for example, the height of the car upper handrail 9). Since the hand of the maintenance worker 8 can easily reach the inner wall surface of the hoistway 1, the safety of the maintenance worker 8 on the upper surface 2 b of the car 2 can be increased. Can be secured. On the other hand, when the horizontal distance from the car handrail 9 to the inner wall surface of the hoistway 1 is larger than the safety reference distance, it is difficult for the hand of the maintenance worker 8 to reach the inner wall surface of the hoistway 1. In order to ensure the safety of the maintenance worker 8 on the upper surface 2b of the car 2, it is necessary to increase the height of the car upper handrail 9 (for example, the height of the car upper handrail 9 is 1100 mm or more). Need to be).

  The height dimension H0 of each first handrail component 10 from the upper surface 2b of the car 2 is fixed to a dimension of 700 mm or more and less than 1100 mm. In this example, the height dimension H0 of each first handrail component 10 is 700 mm. In this example, since the horizontal distance L2 between the inner wall surface of the hoistway 1 facing the side surface 2e of the car 2 and the first handrail component 10 is a distance equal to or less than the safety reference distance, each first Even if the height dimension H0 of the handrail component 10 is as small as 700 mm, the safety of the maintenance worker 8 on the upper surface 2b of the car 2 is ensured.

  FIG. 4 is a side view showing a state in which the height dimension of the second handrail constituting portion 11 of FIG. 2 is increased. The second handrail constituting portion 11 is a handrail height variable portion in which the height dimension from the upper surface 2b of the car 2 can be changed. That is, the state of the second handrail component 11 includes a low handrail state in which the height dimension from the upper surface 2b of the car 2 is the first dimension H1, and a height dimension from the upper surface 2b of the car 2 is the first. It is possible to change between a high handrail state where the second dimension H2 is larger than the dimension H1. The first dimension H1 of the second handrail constituting part 11 is set to a dimension of 700 mm or more and less than 1100 mm, and the second dimension H2 of the second handrail constituting part 10 is set to a dimension of 1100 mm or more. . In this example, the first dimension H1 is set to the same dimension of 700 mm as the height dimension H0 of the first handrail component 10, and the second dimension H2 is set to a dimension of 1100 mm.

  The second handrail constituting portion 11 has a fixed handrail portion 11a fixed to the upper surface 2b of the car 2, and a movable handrail portion 11b provided on the fixed handrail portion 11a so as to be slidable in the vertical direction.

  The movable handrail portion 11b can be displaced relative to the fixed handrail portion 11a between a protruding position (FIG. 4) protruding upward from the fixed handrail portion 11a and a retracted position (FIG. 2) positioned below the protruding position. It has become. The state of the second handrail constituting portion 11 becomes a low handrail state due to the displacement of the movable handrail portion 11b to the retracted position, and becomes a high handrail state due to the displacement of the movable handrail portion 11b to the protruding position.

  The second handrail constituting unit 11 includes a first handrail sensor that is a first handrail detecting unit (not shown) that detects whether or not the second handrail constituting unit 11 is in a low handrail state, A second handrail sensor, which is a second handrail detection unit (not shown) that detects whether or not the handrail constituting unit 11 is in a high handrail state, is provided. In this example, when the movable handrail portion 11b reaches the retracted position, the first handrail sensor detects the movable handrail portion 11b, and when the movable handrail portion 11b reaches the protruding position, the second handrail sensor detects the movable handrail portion 11b. To do.

  In the hoistway 1, as shown in FIG. 1, a plurality of hoistway fixing members 12 are fixed in correspondence with each specific floor. Thereby, in the hoistway 1, a plurality of in-hoistway fixing members 12 are fixed apart from each other in the moving direction of the car 2. As shown in FIG. 3, each hoistway fixing member 12 includes a pair of support fittings 13 that are support members respectively attached to the pair of counterweight guide rails 5, and a common attachment attached to the pair of support fittings 13. Plate portion 14.

  The support fitting 13 is attached to the back surface of the counterweight guide rail 5 with a rail clip. Further, the support fitting 13 extends from the counterweight guide rail 5 to a position closer to the car 2 than the range of the counterweight 3 when the hoistway 1 is viewed from above.

  The plate part 14 is arranged upright with respect to the horizontal plane. Further, the plate portion 14 is disposed in parallel with the second handrail constituting portion 11 when the hoistway 1 is viewed from above. Furthermore, the length of the plate portion 14 when viewed from above is substantially the same as the length of the second handrail constituting portion 11. The plate portion 14 is disposed between the car 2 and the counterweight 3 when the hoistway 1 is viewed from above. That is, the plate portion 14 is disposed at a position closer to the second handrail constituting portion 11 than the inner wall surface of the hoistway 1 facing the back surface 2d of the car 2 when the hoistway 1 is viewed from above. In this example, the horizontal distance L3 between the second handrail constituting portion 11 and the plate portion 14 is 500 mm or less.

  If the height above the floor of the hall 6 on the specific floor by the first dimension H1 is the reference height P, the position of the upper end of the plate portion 14 is the upper end of the hall entrance 7 provided on the corresponding specific floor. The position is lower than the reference height P. Moreover, the position of the lower end part of the board part 14 is a position higher than the upper end part of the landing doorway 7 provided in the lower adjacent floor of the corresponding specific floor, and is a position below the reference height P. Therefore, when the upper surface 2b of the car 2 moves to the height of the floor 6 of the specific floor 6 in the low handrail state where the second handrail constituting portion 11 has the first dimension H1, as shown in FIG. The upper end portion of the second handrail constituting portion 11 moves to a height between the upper end portion and the lower end portion of the plate portion 14. In this example, the position of the lower end portion of the plate portion 14 is set to a position above the floor of the corresponding specific floor 6 (that is, a position higher than the lower end of the landing doorway 7). It has become.

  As shown in FIG. 1, the height dimension of the fixed member 12 in the hoistway corresponding to the specific floor located at the top of each specific floor, that is, the uppermost floor of the building is a hoistway corresponding to a specific floor other than the uppermost floor. It is larger than the height dimension of the inner fixing member 12. A switch 15 is provided on the plate portion 14 of the hoistway fixing member 12 corresponding to the top floor.

  FIG. 5 is a side view showing a state where the upper surface 2b of the car 2 in FIG. 4 is at the level of the floor of the hall 6 on the uppermost floor. When the maintenance worker 8 rides on the upper surface 2b of the car 2 while the car 2 is present near the top floor, the cam 16 is attached to the second handrail constituting portion 11. The cam 16 protrudes from the second handrail constituting portion 11 toward the plate portion 14 when the hoistway 1 is viewed from above. The cam 16 is attached to the movable handrail portion 11b. Thereby, when the second handrail constituting portion 11 is in a high handrail state, the cam 16 is disposed at a position higher than the position above the upper surface 2b of the car 2 by the first dimension H1.

  The switch 15 is pushed and operated by the cam 16 when the car 2 moves upward and the top clearance between the top of the hoistway 1 and the upper end of the second handrail component 11 reaches the set minimum value. The Thereby, the switch 15 detects that the top gap dimension has reached the set minimum value. In other words, the safety detector 17 that detects whether or not the top gap dimension between the top of the hoistway 1 and the upper end of the second handrail component 11 has reached a set minimum value has a switch 15 and a cam 16. doing.

  Information from each of the first handrail sensor, the second handrail sensor, and the safety detector 17 is sent to the control device 18 that controls the operation of the elevator. The control device 18 controls the operation of the elevator based on information from each of the first handrail sensor, the second handrail sensor, and the safety detector 17.

  The control device 18 determines whether or not the second handrail constituting unit 11 is in a low handrail state based on information from the first handrail sensor, and performs the second operation based on information from the second handrail sensor. It is determined whether or not the handrail constituting section 11 is in a high handrail state. In addition, the control device 18 enables the operation of the operation unit on the car in the maintenance operation mode when it is determined that the second handrail constituting unit 11 is in the high handrail state, and the second handrail constituting unit 11 When it is determined that the handrail is not in the high handrail state, the operation of the operation unit on the car in the maintenance operation mode is invalidated. Furthermore, the control device 18 enables the operation of the elevator to be switched from the maintenance operation mode to the normal operation mode when it is determined that the second handrail constituting unit 11 is in the low handrail state. Furthermore, when it is determined that the top gap dimension has reached the set minimum value based on information from the safety detector 17, the control device 18 stops power supply to the drive device and stops the movement of the car 2.

  Next, an elevator maintenance procedure will be described. The service operation of the elevator is performed in the normal operation mode. When the elevator is operated in the normal operation mode, the second handrail constituting portion 11 is in a low handrail state.

  When the maintenance worker 8 performs maintenance work on the upper surface 2b of the car 2, the maintenance worker 8 first moves the car 2 at a low speed while operating the landing manual operation section at the landing 6 on the specific floor, The car 2 is stopped so that the upper surface 2b of the car matches the floor height of the hall 6 on the specific floor. At this time, the hall entrance 7 is closed. Thereby, the upper end part of the 2nd handrail structure part 11 stops in the height between the upper end part and the lower end part of the board part 14 of the fixing member 12 in a hoistway. That is, the upper end portion of the second handrail constituting portion 11 is in a state of facing the plate portion 14 in the horizontal direction.

  Thereafter, the maintenance worker 8 opens the hall entrance 7 on the specific floor and operates the changeover switch installed on the upper surface of the car 2 from the hall 6. Thereby, the operation of the elevator is switched from the normal operation mode to the maintenance operation mode.

  Thereafter, the maintenance worker 8 transfers from the landing 6 to the upper surface 2b of the car 2 while maintaining the stop position of the car 2. At this time, since the distance from the upper end portion of the second handrail constituting portion 11 to the plate portion 14 is a short distance that can be reached by the maintenance worker 8 on the upper surface 2b of the car 2, the second handrail constituting portion Even if 11 is in a low handrail state, the safety of the maintenance worker 8 on the upper surface 2b of the car 2 is ensured. In this example, the maintenance worker 8 transfers from the landing 6 to the upper surface 2b of the car 2 in a state where the horizontal distance from the upper end portion of the second handrail constituting portion 11 to the plate portion 14 is 500 mm or less.

  When the maintenance worker 8 gets on the upper surface 2b of the car 2, the open doorway 7 is closed and the movable handrail portion 11b is lifted to bring the second handrail constituting portion 11 into a high handrail state (ie, The height dimension of the second handrail component 11 is set to the second dimension H2). Thereby, the operation of the operation unit on the car for maintenance provided on the upper surface 2b of the car 2 becomes effective. After that, the maintenance worker 8 on the upper surface 2b of the car 2 operates the car upper operation part at the time of the maintenance at a low speed while maintaining the height dimension of the second handrail constituting part 11 at the second dimension H2. Move with. At this time, the upper end portion of the second handrail constituting portion 11 is gradually separated from the plate portion 14 by the movement of the car 2, but even if the plate portion 14 is not near the second handrail constituting portion 11, The safety dimension of the maintenance worker 8 on the upper surface 2b of the car 2 is ensured by the height dimension of the handrail constituting portion 11 being the second dimension H2. Thereby, the maintenance work of the maintenance worker 8 with respect to the apparatus in the hoistway 1 is attained.

  When the maintenance work on the equipment in the hoistway 1 is completed, the maintenance worker 8 moves the car 2 at a low speed while operating the operation unit on the car for maintenance, and the upper surface 2b of the car 2 is the floor of the landing 6 on the specific floor. Stop the car 2 to fit the height of the car. Thereby, the upper end part of the 2nd handrail structure part 11 will be in the state facing the board part 14 about the horizontal direction.

  Thereafter, the maintenance worker 8 lowers the movable handrail portion 11b to set the height dimension of the second handrail constituting portion 11 to the first dimension H1, then opens the hall entrance 7 on the specific floor, and Transfer to the hall 6 from the upper surface 2b. Thereafter, the selector switch is operated from the landing 6 to switch the elevator operation from the maintenance operation mode to the normal operation mode. Thereafter, the elevator maintenance work is completed by closing the hall entrance 7.

  In such an elevator apparatus, the height dimension of the second handrail component 11 of the car upper handrail 9 can be changed between the first dimension H1 and the second dimension H2, and the landing on the specific floor Assuming that the height above the floor 6 by the first dimension H1 is the reference height P, the position of the upper end of the plate part 14 is a position higher than the reference height P, and the position of the lower end of the plate part 14 is the reference. Since the position is equal to or lower than the height P, when the maintenance worker 8 changes between the upper surface 2b of the car 2 and the landing 6, it is more than the inner wall surface of the hoistway 1 facing the second handrail component 11. The plate part 14 can be arranged at a position close to the second handrail constituting part 11. Thereby, even if the height dimension of the 2nd handrail structure part 11 becomes the 1st dimension H1, the safety | security of the maintenance worker 8 of the upper surface 2b of the cage | basket | car 2 can be ensured by the board part 14. FIG. In the state where the maintenance worker 8 is on the upper surface 2b of the car 2, the height dimension of the second handrail constituting portion 11 is set to the second dimension H2, and the state of the second handrail constituting portion 11 is changed to the high handrail. Therefore, even when the car 2 is moved in the maintenance operation mode, the safety of the maintenance worker 8 on the upper surface 2b of the car 2 can be ensured. Further, in the normal operation mode, the second handrail component 11 can be brought into a low handrail state, and the hoistway 1 can be prevented from expanding in the height direction. Furthermore, since the hoistway fixing member 12 including the plate portion 14 is individually installed in correspondence with a specific floor, it is not necessary to continuously install plates from the upper end portion to the lower end portion of the hoistway 1. Thereby, the in-hoistway fixing member 12 can be installed in the hoistway 1 at low cost.

  Further, the horizontal distance L1 between the second handrail constituting portion 11 and the inner wall surface of the hoistway 1 is larger than 500 mm, and the horizontal distance L2 between the second handrail constituting portion 11 and the plate portion 14 is 500 mm or less. Since the first dimension H1 of the second handrail component 11 is 700 mm or more and less than 1100 mm, and the second dimension H2 of the second handrail component 11 is 1100 mm or more, The safety of the maintenance worker 8 on the upper surface 2b of the car 2 can be ensured more reliably.

  Moreover, since the lower end part of the board part 14 is located in the height above the floor of the hall 6 of a specific floor, the height dimension of the fixing member 12 in the hoistway can be further reduced, and the hoistway The cost for installing the hoistway fixing member 12 in 1 can be further reduced.

  Further, when the control device 18 determines that the second handrail component 11 is in the high handrail state based on the information from the second handrail sensor, the control device 18 validates the operation of the operation unit on the car for maintenance. Therefore, it is possible to prevent the car 2 from being moved while the second handrail constituting portion 11 is not in the high handrail state in the maintenance operation mode. Thereby, the safety | security of the maintenance worker 8 of the upper surface 2b of the cage | basket | car 2 can be ensured more reliably.

  The control device 18 switches from the maintenance operation mode to the normal operation mode when it is determined that the second handrail constituting unit 11 is in the low handrail state based on the information from the first handrail sensor. Therefore, it is possible to prevent the car 2 from being moved while the second handrail constituting portion 11 is not in the low handrail state in the normal operation mode. Thereby, the top part clearance dimension of the hoistway 1 at the time of normal operation mode can be ensured more reliably.

  Further, the control device 18 determines that the top clearance between the top of the hoistway 1 and the upper end of the second handrail component 11 has reached the set minimum value based on information from the safety detector 17. Since the movement of the car 2 is sometimes stopped, it is possible to more reliably prevent the car 2 from colliding with the top of the hoistway 1 due to the upward movement of the car 2.

  The safety detector 17 is provided in the switch 15 provided in the hoistway fixing member 12 corresponding to the top floor and the second handrail component 11, and when the top clearance dimension becomes the set minimum value. Since it has the cam 16 which operates the switch 15, it can detect more reliably by a simple structure that the top part clearance dimension became the setting minimum value.

  Moreover, since the hoistway fixing member 12 is attached to the counterweight guide rail 5, the hoistway fixing member 12 can be easily installed in the hoistway 1.

  In the above example, only the second handrail constituting portion 11 of the pair of first handrail constituting portion 10 and the second handrail constituting portion 11 is the handrail height varying portion. The handrail constituting part 10 may be a handrail height variable part. In this case, the horizontal distance L2 between the first handrail component 10 and the inner wall surface of the hoistway 1 is a distance greater than a safety reference distance (for example, 500 mm).

Embodiment 2. FIG.
FIG. 6 is a side view showing an elevator apparatus according to Embodiment 2 of the present invention. FIG. 7 is a top view showing the elevator apparatus of FIG. As shown in FIG. 7, the counterweight 3 is arranged on one side 2 e side of the car 2 when the hoistway 1 is viewed from above. That is, the elevator in this example is a counterweight type falling elevator.

  When the hoistway 1 is viewed from above, one car guide rail 4 of the pair of car guide rails 4 that guide the car 2 faces one side surface 2e of the car 2, and the other car guide rail 4 is the car. 2 is opposed to the other side surface 2e. When the hoistway 1 is viewed from above, a pair of counterweight guide rails 5 for guiding the counterweight 3 are opposed to each other via the counterweight 3 in the direction along one side surface 2e of the car 2. doing.

  In this example, the horizontal distance L4 between the side wall 2e of the car 2 on the counterweight 3 side, that is, the inner wall surface of the hoistway 1 facing the one side 2e of the car 2 and the first handrail component 10 on one side. However, the distance is larger than the safety reference distance (for example, 500 mm). In this example, the horizontal distance L5 between the inner wall surface of the hoistway 1 facing the other side surface 2e of the car 2 and the other first handrail component 10 and the hoisting face facing the rear surface 2d of the car 2 are also shown. The horizontal distance L6 between the inner wall surface of the road 1 and the second handrail component 11 is a distance equal to or less than a safety reference distance (for example, 500 mm).

  Thereby, in this example, among the pair of the first handrail constituting portion 10 and the second handrail constituting portion 11, the first handrail constituting portion 10 on the side close to the counterweight 3 is the handrail height varying portion. The height dimensions of the other first handrail constituting portion 10 and the second handrail constituting portion 11 are fixed without changing.

  The configuration of one of the first handrail components 10 that is the handrail height variable unit is the same as the configuration of the second handrail component 11 that is the handrail height variable unit in the first embodiment. Therefore, the height dimension of one first handrail component 10 can be changed between the first dimension H1 and the second dimension H2 larger than the first dimension H1. Each set value of the first dimension H1 and the second dimension H2 is the same as the set value of the height dimension of the second handrail component 11 in the first embodiment. That is, the first dimension H1 of one first handrail component 10 is set to a dimension of 700 mm or more and less than 1100 mm, and the second dimension H2 of one first handrail component 10 is 1100 mm or more. Set to dimensions.

  The set value of the height dimension of each of the other first handrail constituent part 10 and the second handrail constituent part 11 is the set value of the height dimension H0 of the first handrail constituent part 10 in the first embodiment. The same. That is, the height dimension of each of the other first handrail constituent part 10 and the second handrail constituent part 11 is set to a dimension of 700 mm or more and less than 1100 mm.

  In the hoistway 1, a plurality of hoistway fixing members 12 are fixed in correspondence with the specific floors. Each hoistway fixing member 12 has a pair of support fittings 13 attached to the pair of counterweight guide rails 5 and a common plate portion 14 attached to the pair of support fittings 13.

  The plate part 14 is arranged upright with respect to the horizontal plane. Moreover, the board part 14 is arrange | positioned in parallel with one 1st handrail structure part 10 by the side of the counterweight 3 when the hoistway 1 is seen from the top. Furthermore, the length of the plate portion 14 when viewed from above is substantially the same as the length of the first handrail constituting portion 10. The plate portion 14 is disposed at a position closer to the first handrail component 10 than the inner wall surface of the hoistway 1 facing the one side surface 2e of the car 2 when the hoistway 1 is viewed from above. . In this example, when the hoistway 1 is viewed from above, the plate portion 14 is disposed between the inner wall surface of the hoistway 1 facing the one side surface 2 e of the car 2 and the counterweight 3. In this example, the horizontal distance L7 between the first handrail constituting part 10 and the plate part 14 is a safety reference distance (for example, 500 mm) or less.

  If the height above the floor of the hall 6 on the specific floor by the first dimension H1 is the reference height P, the position of the upper end of the plate portion 14 is the upper end of the hall entrance 7 provided on the corresponding specific floor. The position is lower than the reference height P. Moreover, the position of the lower end part of the board part 14 is a position higher than the upper end part of the landing doorway 7 provided in the lower adjacent floor of the corresponding specific floor, and is a position below the reference height P. Accordingly, when the upper surface 2b of the car 2 is moved to the height of the floor 6 of the specific floor 6 in a low handrail state where one of the first handrail components 10 has the first dimension H1, as shown in FIG. In addition, the upper end portion of the first handrail component 10 moves to a height between the upper end portion and the lower end portion of the plate portion 14. In this example, the position of the lower end portion of the plate portion 14 is set to a position above the floor of the corresponding specific floor 6 (that is, a position higher than the lower end of the landing doorway 7). It has become.

  FIG. 8 is a side view showing a state in which the upper surface 2b of the car 2 in FIG. FIG. 9 is a side view showing a state in which the upper surface 2b of the car 2 in FIG. 6 is disposed at the lower limit position of the allowable entry / exit range during maintenance. The upper limit position of the allowable entry / exit range for maintenance is a position higher than the floor height of the hall 6 on the specific floor by the dimension Hu, and the lower limit position of the allowable entrance / exit range for maintenance is higher than the floor height of the hall 6 on the specific floor. The position is lower by the dimension Hd. In this example, the dimension Hu and the dimension Hd are both set to 500 mm.

  The position of the upper end portion of the plate portion 14 is higher than the height above the reference height P by the dimension Hu (ie, 500 mm). As a result, even when the upper surface 2b of the car 2 is moved to the upper limit position of the maintenance allowable boarding / exiting range, as shown in FIG. The height of the upper end is not exceeded.

  Also, in this example, as shown in FIG. 9, when the upper surface 2b of the car 2 is stopped at the lower limit position of the maintenance allowable boarding / exiting range, the position of the upper end portion of the first handrail component 10 is the plate. The gap 14 is below the height of the lower end of the portion 14. The clearance dimension A is a dimension determined from the viewpoint of ensuring the safety of the maintenance worker 8 on the upper surface 2 b of the car 2. If the difference in height between the upper end portion of the first handrail component 10 and the lower end portion of the plate portion 14 is within the gap dimension A, the upper end portion of the first handrail component 10 Even if the position is lower than the height of the lower end portion of the plate portion 14, the hand of the maintenance worker 8 on the upper surface 2b of the car 2 can easily reach the plate portion 14 to ensure the safety of the maintenance worker 8. The In this example, the gap dimension A is set to 300 mm.

  Accordingly, the position of the lower end portion of the plate portion 14 is a position that is a height obtained by subtracting the gap dimension A (that is, 300 mm) from the dimension Hd (that is, 500 mm), that is, 200 mm, from the reference height P. ing. Other configurations and operations are the same as those in the first embodiment.

  In such an elevator apparatus, the position of the upper end portion of the plate portion 14 is higher than the height above the reference height P by 500 mm, so that the maintenance worker 8 has the upper surface 2b of the car 2 and the landing 6 Even when the upper surface 2b of the car 2 is displaced upward from the height of the floor 6 of the specific floor when moving between the two, it is closer to the first handrail component 10 than the inner wall surface of the hoistway 1 The plate portion 14 can be arranged at the position, and the safety of the maintenance worker 8 on the upper surface 2b of the car 2 can be ensured more reliably.

  Moreover, since the position of the lower end part of the board part 14 is a position below the reference height P by 200 mm, when the maintenance worker 8 changes between the upper surface 2 b of the car 2 and the landing 6. Even if the upper surface 2b of the car 2 is shifted downward from the floor height of the hall 6 on the specific floor, the plate portion 14 is positioned closer to the first handrail component 10 than the inner wall surface of the hoistway 1. The safety of the maintenance worker 8 on the upper surface 2b of the car 2 can be ensured more reliably. Moreover, the dimension from the reference height P to the lower end portion of the plate portion 14 can be reduced, and the size of the plate portion 14 can be further reduced.

  In the above example, the position of the upper end portion of the plate portion 14 is higher than the height above the reference height P by 500 mm, but the position of the upper end portion of the plate portion 14 is set to the reference height P. You may make it the position of the height only 500mm from. Even in this case, the safety of the maintenance worker 8 on the upper surface 2b of the car 2 can be ensured.

  In the above example, the lower end portion of the plate portion 14 is disposed at a position 200 mm below the reference height P. However, the lower end portion of the plate portion 14 is positioned at a height of 200 mm from the reference height P. It may be a position lower than the lower height. In this case, the position of the lower end portion of the plate portion 14 can be set to a height lower by 500 mm from the reference height P in accordance with the dimension Hd of the allowable boarding / alighting range for maintenance. In this way, the safety of the maintenance worker 8 on the upper surface 2b of the car 2 can be ensured more reliably.

  In the above example, only one of the first handrail constituting portion 10 and the second handrail constituting portion 11 of the pair is the handrail height varying portion, At least one of the first handrail constituting portion 10 and the second handrail constituting portion 11 may be a handrail height variable portion. When the other first handrail component 10 is a handrail height variable portion, the horizontal distance L5 between the other first handrail component 10 and the inner wall surface of the hoistway 1 is a safety reference distance (for example, , 500 mm), and when the second handrail constituting portion 11 becomes the handrail height variable portion, the horizontal distance L6 between the second handrail constituting portion 11 and the inner wall surface of the hoistway 1. Becomes a distance larger than the safety reference distance (for example, 500 mm).

  Further, considering that the allowable boarding / exiting range for maintenance is set to a range of 500 mm upward and 500 mm downward from the floor height of the hall 6 on the specific floor, the position of the upper end of the plate part 14 is used as a reference. The height may be a position 500 mm above the height P, and the position of the lower end of the plate portion 14 may be a position 500 mm below the reference height P. If it does in this way, the dimension of the board part 14 can be made small and the installation of the in-hoistway fixing member 12 and the reduction of cost can be aimed at.

  Further, when the maintenance worker 8 changes between the landing 6 and the upper surface 2b of the car 2, the deviation amount of the stop position of the upper surface 2b of the car 2 with respect to the height of the floor 6 of the specific floor is usually 100 mm vertically. The position of the upper end portion of the plate portion 14 is set to a position that is 100 mm above the reference height P, and the position of the lower end portion of the plate portion 14 is determined from the reference height P. It is good also as a position of the height below only 100 mm. If it does in this way, the dimension of the board part 14 can be made further smaller, and the installation of the in-hoistway fixing member 12 can be facilitated and the cost can be further reduced.

Embodiment 3 FIG.
FIG. 10 is a side view showing an elevator apparatus according to Embodiment 3 of the present invention. FIG. 11 is a top view showing the elevator apparatus of FIG. The elevator of this example is a counterweight type falling elevator similar to that of the second embodiment.

  When the hoistway 1 is viewed from above, one car guide rail 4 of the pair of car guide rails 4 that guide the car 2 faces one side surface 2e of the car 2, and the other car guide rail 4 is the car. 2 is opposed to the other side surface 2e. One car guide rail 4 is disposed in a space between the car 2 and the counterweight 3 when the hoistway 1 is viewed from above.

  On the side wall 2e of the car 2 on the counterweight 3 side, that is, on the inner wall surface of the hoistway 1 facing the one side 2e of the car 2, each of the one car guide rail 4 and the pair of counterweight guide rails 5 is provided. A rail bracket 21 as a supporting member in the hoistway to be supported is fixed.

  The rail bracket 21 is fixed in the hoistway 1 corresponding to each specific floor. The rail bracket 21 is attached between the pair of first rail bracket portions 211 that individually support the pair of counterweight guide rails 5 and the pair of first rail bracket portions 211, and one car guide rail 4. And a second rail bracket portion 212 that supports the second rail bracket portion 212.

  The pair of first rail bracket portions 211 are arranged along the inner wall surface of the hoistway 1 so as to be separated from each other in the horizontal direction. The counterweight 3 is disposed in the space between the pair of first rail bracket portions 211.

  The second rail bracket portion 212 is disposed across the space between the car 2 and the counterweight 3 when the hoistway 1 is viewed from above. Further, the second rail bracket portion 212 is disposed in parallel with the first handrail constituting portion 10 when the hoistway 1 is viewed from above. Further, the second rail bracket portion 212 has a rail mounting plate as a plate portion to which one of the car guide rails 4 is attached. The rail mounting plate of the second rail bracket portion 212 is arranged upright with respect to the horizontal plane. In this example, as shown in FIG. 11, the length of the second rail bracket portion 212 is shorter than the length of the first handrail constituting portion 10.

  The position of the upper end portion of the rail mounting plate of the second rail bracket portion 212 is lower than the upper end portion of the landing doorway 7 provided on the specific floor and is a position equal to or higher than the reference height P. Moreover, the position of the lower end part of the rail mounting plate of the second rail bracket part 212 is a position higher than the upper end part of the landing doorway 7 provided on the lower adjacent floor of the specific floor, and a position equal to or lower than the reference height P. It has become. In this example, the position of the upper end portion of the rail mounting plate of the second rail bracket portion 212 is higher than the reference height P, and the position of the lower end portion of the rail mounting plate of the second rail bracket portion 212. Is at the same height as the reference height P.

  In this example, the horizontal distance L4 between the inner wall surface of the hoistway 1 facing the side surface 2e on the counterweight 3 side of the car 2, that is, one side surface 2e of the car 2, and the first handrail component 10 is: The horizontal distance L5 between the inner wall surface of the hoistway 1 facing the other side surface 2e of the car 2 and the first handrail component 10, and the inner wall surface of the hoistway 1 facing the rear surface 2d of the car 2 and the second It is larger than the horizontal distance L6 between the handrail constituting part 11 of the handrail. In this example, the horizontal distance L4 is larger than the safety reference distance (for example, 500 mm), and the horizontal distances L5 and L6 are distances not more than the safety reference distance (for example, 500 mm).

  Accordingly, in this example, one of the pair of first handrail constituent parts 10 and the second handrail constituent parts 11, the first handrail constituent part 10 on the side close to the counterweight 3 is the handrail height variable part. The height dimensions of the other first handrail constituting portion 10 and the second handrail constituting portion 11 are fixed without changing.

  The configuration of one first handrail component 10 that is the handrail height variable unit is the same as the configuration of one first handrail component 10 in the second embodiment. In addition, each of the other first handrail constituent unit 10 and the second handrail constituent unit 11 is the same as the configuration of the first handrail constituent unit 10 in the first embodiment. Other configurations and operations are the same as those in the first embodiment.

  In such an elevator apparatus, the rail bracket 21 that supports the car guide rail 4 and the counterweight guide rail 5 is installed corresponding to a specific floor as a hoistway fixing member. The safety of the maintenance worker 8 on the upper surface 2b can be ensured, and the height dimension of the car handrail 9 can be reduced in the normal operation mode, and the hoistway 1 can be reduced in the height direction. be able to. Moreover, in order to ensure the safety of the maintenance worker 8 on the upper surface 2b of the car 2, the rail bracket 21 can be used as a fixing member in the hoistway. Thereby, the number of parts in the hoistway 1 can be reduced and the cost of an elevator apparatus can be reduced.

  In each of the above embodiments, the specific floor to which the maintenance worker 8 can transfer between the landing 6 and the upper surface 2b of the car 2 is all the floors other than the lowest floor, but is not limited thereto. It is sufficient that at least one of the floors other than the lowest floor is a specific floor.

  Further, in each of the above embodiments, the switch 15 is provided in the hoistway fixing member 12 corresponding to the hall entrance 7 on the top floor, and the cam 16 is provided in the second handrail component 11, but the second A switch 15 may be provided in the handrail constituting portion 11, and a cam 16 may be provided in the hoistway fixing member 12 corresponding to the hall entrance 7 on the top floor.

  Moreover, in each said embodiment, at least any one of the 1st and 2nd handrail structure parts 10 and 11 is a handrail height variable part, and a movable handrail part is a fixed handrail part in a handrail height variable part. However, the movable handrail portion may be detachable with respect to the fixed handrail portion. In this case, by removing the movable handrail portion from the fixed handrail portion, the height dimension of the handrail height variable portion becomes the first dimension H1, and by attaching the movable handrail portion to the fixed handrail portion, the height of the handrail height variable portion is increased. The height dimension becomes the second dimension H2. Further, the handrail height variable portion may be foldable by the rotation of the movable handrail portion relative to the fixed handrail portion.

Claims (13)

A car that can move up and down in the hoistway,
A low handrail state in which the height dimension from the top surface of the car is the first dimension, and a high handrail state in which the height dimension from the top surface of the car is a second dimension that is larger than the first dimension. A handrail height variable portion that can be changed between the upper handrail of the car provided on the upper surface of the car, and the inner wall surface of the hoistway and the handrail height when the hoistway is viewed from above A plate part disposed between the two parts, and a fixing member in the hoistway that is fixed in the hoistway corresponding to a specific floor that is at least one floor other than the lowest floor,
When the height above the first dimension from the floor of the specific floor hall is the reference height,
The position of the upper end portion of the plate portion is a position lower than the upper end portion of the landing entrance provided on the specific floor, and is a position equal to or higher than the reference height,
The position of the lower end part of the said board part is an elevator apparatus which is a position higher than the upper end part of the landing doorway provided in the downward adjacent floor of the said specific floor, and is below the said reference height. The horizontal distance between the handrail height varying portion and the inner wall surface of the hoistway is greater than 500 mm, and the horizontal distance between the handrail height varying portion and the plate portion is 500 mm or less,
The first dimension is a dimension of 700 mm or more and less than 1100 mm,
The elevator apparatus according to claim 1, wherein the second dimension is a dimension of 1100 mm or more.   The elevator apparatus according to claim 1 or 2, wherein a position of an upper end portion of the plate portion is a position equal to or higher than a height of 500 mm above the reference height.   The elevator apparatus according to any one of claims 1 to 3, wherein a position of a lower end portion of the plate portion is a position equal to or lower than a height of 200 mm below the reference height.   The position of the upper end portion of the plate portion is a position that is 500 mm above the reference height, and the position of the lower end portion of the plate portion is a position that is 500 mm below the reference height. The elevator apparatus according to claim 1 or 2.   The position of the upper end of the plate part is a position 100 mm above the reference height, and the position of the lower end of the plate part is a position 100 mm below the reference height. The elevator apparatus according to claim 1 or 2.   The lower end part of the said board part is an elevator apparatus as described in any one of Claims 1-6 located in the height above the floor of the boarding floor of the said specific floor. Based on the information from the first handrail detecting unit that detects whether the handrail height varying unit is in the low handrail state, and the information from the first handrail detecting unit, the handrail height varying unit The control device which enables switching from the maintenance operation mode to the normal operation mode for the operation of the elevator when it is determined that the state is in the low handrail state is provided. The elevator apparatus as described. Based on the information from the second handrail detecting unit that detects whether the handrail height varying unit is in the high handrail state, and the information from the second handrail detecting unit, the handrail height varying unit The control apparatus which makes effective operation of the operation part on a cage | basket | car provided at the time of the maintenance provided in the upper surface of the said car when it determines with it being in a high handrail state is provided. The elevator apparatus as described in the item. Based on the information from the safety detector that detects whether or not the top gap size between the top of the hoistway and the upper end of the handrail height variable portion has become a set minimum value, and the safety detector, The elevator apparatus according to any one of claims 1 to 9, further comprising a control device that stops the movement of the car when it is determined that the top clearance is the set minimum value. The safety detector has a switch and a cam for operating the switch,
11. The switch according to claim 10, wherein the switch is provided on one of the fixing member in the hoistway corresponding to the uppermost floor which is the specific floor and the handrail height variable portion, and the cam is provided on the other. Elevator device. It has a counterweight that can move up and down in the hoistway,
The elevator device according to any one of claims 1 to 11, wherein the hoistway fixing member is attached to a guide rail that guides the counterweight. It has a counterweight that can move up and down in the hoistway,
The elevator apparatus according to any one of claims 1 to 11, wherein the hoistway fixing member is a rail bracket that supports a guide rail that guides the car and the counterweight.

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