JP6272507B2 - Elevator equipment - Google Patents

Description

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

  In the conventional elevator apparatus, a pair of side handrails and a rear handrail are provided on the upper surface of the car. The side handrail and the back handrail can be displaced between a state of being laid on a car and a state of being stood (see, for example, Patent Document 1).

Japanese Patent No. 4220464

  In the conventional elevator apparatus as described above, an operator gets on the car and raises the side rails and the rear rails, but when the gap between the car and the hoistway wall is large (for example, 300 mm or more). May be required to keep the handrail constantly so that the operator does not fall into the hoistway from the gap. Further, when the horizontal distance from the handrail to the hoistway wall is large (for example, 500 mm or more), it is required to increase the height of the handrail (for example, 1100 mm or more) so that an operator does not accidentally get over the handrail. May be.

  On the other hand, at the top of the hoistway, in order to prevent the handrail from colliding with the hoistway ceiling even if the car runs away upward and the counterweight collides with the shock absorber of the hoistway pit A margin dimension, that is, an overhead dimension is secured. On the other hand, for example, when a handrail with a height of 1100 mm is permanently installed on the car, it is not preferable because the overhead dimension needs to be increased by 400 mm as compared with a case where a handrail with a height of 700 mm is permanently installed.

  In addition, there is a method of installing a fall prevention plate on the hoistway wall so as to reduce the horizontal distance from the handrail to the hoistway wall, but the equipment cost and the installation cost are increased.

  The present invention has been made to solve the above-described problems, and provides an elevator apparatus that can secure the necessary height dimension of a handrail apparatus while suppressing an increase in overhead dimension and an increase in cost. For the purpose.

An elevator apparatus according to the present invention has a horizontal car upper surface, and includes a car that moves up and down in a hoistway, and a handrail device provided on the upper surface of the car, and the handrail device enters the upper surface of the car from the landing. The boarding prevention member is inclined with respect to the upper surface of the car and is placed on an inclined storage position that prevents the boarding from the landing to the upper surface of the car and on an edge of the upper surface of the car. It can be displaced by the operation from the landing to the handrail position that allows entry from the landing to the top of the car, and at least one of the car side and the hoistway side is displaced to the handrail position. A stopper is provided to mechanically limit the upward movement of the car when it is moved.
In addition, the elevator apparatus according to the present invention has a horizontal car upper surface, a car that moves up and down in the hoistway, a handrail base fixed to the car upper surface, and an operation on the car upper surface, so that the lower storage position and the upper A handrail device having a handrail movable portion that can move up and down with respect to the handrail base between the protruding position and a hoistway wall. There is a fall prevention plate to prevent, and only some of the multiple floors of the hall are designated as boarding permitted landings that are allowed to enter the car top surface, and the fall prevention plate is from the boarding permission landing to the top surface of the car Is partially provided in the hoistway so as to face at least one of the car and the handrail device when the car is stopped at a position where the car can be boarded, and at least one of the car side and the hoistway side On the one hand, When displacing the sliding movable portion in the upper extended position stopper for mechanically restricting the upward movement of the car is provided.

  The elevator apparatus according to the present invention can secure the necessary height dimension of the handrail apparatus while suppressing an increase in overhead dimension and an increase in cost.

It is a front view which shows the principal part of the elevator apparatus by Embodiment 1 of this invention in a partial block. It is a top view which shows the elevator apparatus of FIG. It is a front view which shows the state which displaced the 1st and 2nd boarding prevention board of FIG. 1 to the handrail position. It is a top view which shows the state which displaced the 1st and 2nd boarding prevention board of FIG. 2 to the handrail position. It is a front view which shows the state in the middle of displacing the 1st and 2nd boarding prevention board of FIG. 1 to a handrail position. It is a front view which shows the state which further displaced the 1st and 2nd boarding prevention board of FIG. 5 to the handrail position side. It is a front view which shows the principal part of the elevator apparatus by Embodiment 2 of this invention. It is a front view which shows the principal part of the elevator apparatus by Embodiment 3 of this invention in a partial block. It is a front view which shows the state at the time of the maintenance work on the cage | basket | car of the elevator apparatus of FIG. It is a top view which shows the elevator apparatus of FIG. It is a front view which expands and shows the XI part of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a front view showing a part of an essential part of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a plan view showing the elevator apparatus of FIG. In the figure, a car 1 and a counterweight 2 are suspended in a hoistway 3 by a plurality of suspension bodies (not shown), and are moved up and down in the hoistway 3 by a driving force of a driving device 4.

  The drive device 4 includes a drive sheave around which a suspension body is wound, a motor that rotates the drive sheave, and a brake that brakes the rotation of the drive sheave. An electromagnetic brake is used as the brake. The electromagnetic brake includes a brake rotating body that rotates integrally with the drive sheave, a brake shoe, a brake spring that presses the brake shoe against the brake rotating body, and an electromagnetic magnet that pulls the brake shoe away from the brake rotating body.

  The drive device 4 is controlled by the elevator control device 5. That is, the operation of the car 1 is controlled by the elevator control device 5. The elevator control device 5 has a microcomputer. In this example, the drive device 4 and the elevator control device 5 are installed in the hoistway 3. That is, the elevator apparatus of this example is a machine room-less elevator.

  In the hoistway 3, a pair of car guide rails 6 a and 6 b that guide the raising and lowering of the car 1 and a pair of counterweight guide rails 7 a and 7 b that guide the raising and lowering of the counterweight 2 are installed. In this example, the counterweight 2 is disposed behind the car 1 so as to face the back of the car 1 when positioned at the same height as the car 1.

  FIG. 1 shows a state where the car 1 is stopped on the top floor, that is, a state where the height of the floor surface of the car 1 coincides with the height of the floor surface 8 of the top floor landing. The car 1 has a horizontal car upper surface 1a.

  The car top surface 1a is provided with first and second boarding prevention plates 9 and 10 as boarding prevention members that prevent boarding from the hall to the car top surface 1a. The first and second boarding prevention plates 9 and 10 can be displaced between the inclined storage position shown in FIGS. 1 and 2 and the handrail position shown in FIGS. 3 and 4 by an operation from the landing. Yes.

  The first and second boarding prevention plates 9 and 10 are inclined with respect to the car upper surface 1a when physically positioned at the inclined storage position, and physically prevent the boarding of the car upper surface 1a from the landing. Further, the first and second boarding prevention plates 9 and 10 are erected on the left and right edges of the car upper surface 1a when positioned at the handrail position, and allow the boarding from the landing to the car upper surface 1a. . Furthermore, the 1st and 2nd boarding prevention board 9 and 10 functions as a handrail (safety fence), when located in a handrail position.

  When the boarding prevention plates 9 and 10 are positioned at the inclined storage position, the inclination angle of the boarding prevention plates 9 and 10 with respect to the car upper surface 1a is 45 ° or more. At this time, since the first and second boarding prevention plates 9 and 10 are stored in an inclined state even near the landing doorway, the operator cannot move to the car top surface 1a.

  The first boarding prevention plate 9 includes a first frame body (handrail body) 9a and a plurality of (in this example, two) first prevention plate main bodies 9b fixed to the first frame body 9a. And have. The second boarding prevention plate 10 includes a second frame body (handrail body) 10a and a plurality of (in this example, two) second prevention plate main bodies 10b fixed to the second frame body 10a. And have.

  The prevention plate main bodies 9b and 10b are respectively affixed to the lower part of the frame 9a and 10a and between the middle bar and the upper part of the frames 9a and 10a. Moreover, when located in the inclined storage position, the upper end portions of the first and second boarding prevention plates 9 and 10 intersect each other (they do not interfere with each other due to the nested structure). For this reason, a leg cannot be put between the 1st and 2nd boarding prevention boards 9 and 10. FIG.

  On the upper surface 1a of the car, a storage detection switch 11 for detecting that the second boarding prevention plate 10 is located at the inclined storage position is provided. As the storage detection switch 11, a mechanically operated switch is used. The first and second boarding prevention plates 9 and 10 are displaced mechanically in conjunction with each other. For this reason, the storage detection switch 11 also detects that the first boarding prevention plate 9 is located at the inclined storage position.

  When the storage detection switch 11 detects that the first and second boarding prevention plates 9 and 10 are not located at the inclined storage position, the elevator control device 5 prohibits the normal operation of the car 1.

  Further, the elevator control device 5 detects that the first and second boarding prevention plates 9 and 10 are located at the handrail position by a handrail position detection switch (not shown) or the like, and the operation mode is switched to the maintenance operation mode. When all the landing doors are closed, the maintenance operation of the car 1 is permitted manually. The speed of the car 1 in the maintenance operation mode is limited to be lower than the speed of the car 1 in the normal operation mode.

  Fixed to the second boarding prevention plate 10 is a car-side stopper 12 that protrudes outside the car 1 when viewed from directly above when the first and second boarding prevention plates 9 and 10 are displaced to the handrail position. Has been. The car-side stopper 12 is housed inside the car 1 when viewed from directly above when the first and second boarding prevention plates 9 and 10 are displaced to the inclined housing position.

  A top buffer 13 serving as a hoistway side stopper is provided at the top of the hoistway 3. The top buffer 13 is fixed to the car guide rail 6b. Further, the top buffer 13 mechanically limits the upward movement of the car 1 by the car-side stopper 12 hitting when the first and second boarding prevention plates 9 and 10 are displaced to the handrail position. .

  A rear handrail (rear handrail) 15 is erected on the rear edge of the car upper surface 1a as viewed from the landing. The rear handrail 15 is vertically moved with respect to the handrail base 16 between the handrail base 16 fixed to the car upper surface 1a, and the lower storage position (FIGS. 1 and 2) and the upper protruding position (FIGS. 3 and 4). A movable handrail movable portion 17 is provided.

  Between the boarding prevention plates 9 and 10 and the rear handrail 15, the handrail movable portion 17 is moved upward from the lower storage position by mechanically interlocking with the displacement of the boarding prevention plates 9 and 10 from the inclined storage position to the handrail position. A back side handrail interlocking mechanism 14 that is displaced to the protruding position is provided. The back side handrail interlocking mechanism 14 mechanically interlocks with the displacement of the boarding prevention plates 9 and 10 from the handrail position to the inclined storage position, and displaces the handrail movable portion 17 from the upper protruding position to the lower storage position.

  The back handrail interlocking mechanism 14 includes a horizontal guide groove 17a provided in the handrail movable portion 17, a first guide pin 18 fixed to the first boarding prevention plate 9, and a second boarding prevention plate. 10 and a second guide pin 19 fixed to 10. The first and second guide pins 18 and 19 are inserted into the guide groove 17a.

  By displacing the first and second boarding prevention plates 9 and 10, the first and second guide pins 18 and 19 move in the guide groove 17a. Thereby, the handrail movable part 17 moves up and down.

  5 is a front view showing a state in the middle of displacing the first and second boarding prevention plates 9 and 10 of FIG. 1 to the handrail position, and FIG. 6 is a diagram showing the first and second boarding prevention plates 9 and 10 of FIG. It is a front view which shows the state which was further displaced to the handrail position side.

  When the first and second boarding prevention plates 9 and 10 are displaced to the handrail position, the distance between the first and second guide pins 18 and 19 becomes maximum, and the handrail movable portion 17 reaches the upper protruding position. Further, when the first and second boarding prevention plates 9 and 10 are displaced to the inclined storage position, the first guide pin 18 hits the second guide pin 19, and the first and second boarding prevention plates 9 and 10. However, the handrail movable part 17 reaches the lower storage position.

  As shown in FIGS. 2 and 4, the displacement of the first and second boarding prevention plates 9 and 10 is mechanically linked between the first boarding prevention plate 9 and the second boarding prevention plate 10. A left-right interlocking mechanism 20 is provided. The left / right interlocking mechanism 20 includes an interlocking wire 21 as an interlocking strip and a pulley 22.

  The interlocking wire 21 is disposed in the guide groove 17 a and is connected between the first guide pin 18 and the second guide pin 19. The pulley 22 is disposed at one end of the guide groove 17a, and the interlocking wire 21 is wound around the pulley 22.

  For example, when the first boarding prevention plate 9 is displaced from the inclined storage position to the handrail position, the second guide pin 19 is pulled to the left in FIG. Displaces to the handrail position. Further, when the second boarding prevention plate 10 is displaced from the handrail position to the inclined storage position, the first guide pin 18 is pulled to the left in FIG. Displace to the tilted storage position.

  The first and second boarding prevention plates 9 and 10 return to the inclined storage position due to their own weight when the hands are released while being displaced from the inclined storage position to the handrail position. At this time, the handrail movable part 17 also returns to the lower storage position by its own weight. When the first and second boarding prevention plates 9 and 10 are completely displaced to the handrail position, the first and second boarding prevention plates 9 and 10 are held at the handrail position, and the handrail movable portion 17 is also in the upper protruding position. Retained.

  The handrail device 23 according to Embodiment 1 includes first and second boarding prevention plates 9 and 10 and a back handrail 15.

  The distance B (from the upper end of the handrail device 23 to the ceiling of the hoistway 3 when the car-side stopper 12 hits the top buffer 13 with the first and second boarding prevention plates 9 and 10 positioned at the handrail position FIG. 3) shows the state from the upper end of the handrail device 23 to the ceiling of the hoistway 3 when the car 1 has landed on the top floor with the first and second boarding prevention plates 9 and 10 positioned at the inclined storage position. It is more than the distance A (FIG. 1).

  In such an elevator apparatus, the first and second boarding prevention plates 9 and 10 are positioned at the inclined storage position during normal operation, and the handrail movable portion 17 of the back handrail 15 is positioned at the lower storage position. . For this reason, the height dimension of the handrail apparatus 23 can be suppressed lower than 1100 mm (for example, 700 mm or less), for example. Thereby, an increase in overhead dimension can be suppressed and space saving can be achieved.

  Further, if the first and second boarding prevention plates 9 and 10 are displaced to the handrail position and the handrail movable portion 17 is not displaced to the upper protruding position by an operation from the landing, an operator may get on the car upper surface 1a. Can not. Further, in the state where the first and second boarding prevention plates 9 and 10 are displaced to the handrail position and the handrail movable portion 17 is displaced to the upper protruding position, the height dimension of the handrail device 23 is erroneously determined by the operator. The size (for example, 1100 mm or more) which does not get over the handrail device 23 and move to the outside of the handrail device 23 can be achieved.

  Therefore, even when the horizontal distance from the handrail device 23 to the hoistway wall is large, it is not necessary to install a fall prevention plate on the hoistway wall, and an increase in cost can be suppressed.

  Further, when the first and second boarding prevention plates 9 and 10 are located at the handrail position, the upward movement of the car 1 by the car-side stopper 12 and the top buffer 13 is lower than the top floor landing position. Therefore, even when the height of the handrail device 23 is high, a sufficient distance from the upper end of the handrail device 23 to the ceiling of the hoistway 3 can be secured.

  Thus, according to the elevator apparatus of Embodiment 1, it is possible to ensure the necessary height dimension of the handrail device 23 during maintenance work on the car upper surface 1a while suppressing an increase in overhead dimension and an increase in cost. it can.

  In addition, when the first and second boarding prevention plates 9 and 10 are located at the inclined storage position, the inclination angle of the first and second boarding prevention plates 9 and 10 with respect to the car upper surface 1a is 45 ° or more. It is possible to more reliably prevent the car 1 from getting on in this state.

  Further, since the handrail movable portion 17 moves up and down in conjunction with the displacement of the first and second boarding prevention plates 9 and 10, the height of the rear handrail 15 is adjusted before the operator moves to the car upper surface 1a. Can be bigger. For this reason, even when the horizontal distance from the rear handrail 15 to the hoistway wall is large, it is not necessary to install a fall prevention plate on the hoistway wall, and an increase in cost can be suppressed.

  Furthermore, since the displacement of the first and second boarding prevention plates 9 and 10 is interlocked with each other, the operator does not move to the car upper surface 1a with only one of them displaced to the handrail position. Moreover, only one storage detection switch 11 is required.

  Further, since the car-side stopper 12 is provided on the second boarding prevention plate 10, a switch for detecting the position of the car-side stopper 12 is not necessary. Furthermore, since the car side stopper 12 is also housed when the first and second boarding prevention plates 9 and 10 are displaced to the inclined storage position after the maintenance return, the car side stopper 12 or the top buffer 13 is damaged due to work leakage. Can be prevented.

In addition, although the back side handrail 15 was used in said example, when the clearance gap between the back surface of the cage | basket | car 1 and a hoistway wall is small enough, the back side handrail 15 can be abbreviate | omitted. Moreover, when the horizontal distance from the back side handrail 15 to the hoistway wall is small, the height dimension of the back side handrail 15 does not need to be variable.
Further, in the above example, the configuration in which the handrail movable portion 17 slides in the vertical direction is shown, but a configuration in which the handrail movable portion rotates (bends and extends) with respect to the handrail base portion and moves up and down may be employed.
Furthermore, in the above example, the rear handrail 15 that expands and contracts in the vertical direction is shown. However, the rear handrail is placed on the car upper surface 1a when the first and second boarding prevention plates 9 and 10 are located at the inclined storage position. If the first and second boarding prevention plates 9 and 10 are tilted and displaced to the handrail position, they may stand up together.

Embodiment 2. FIG.
Next, FIG. 7 is a front view showing a main part of an elevator apparatus according to Embodiment 2 of the present invention. The first boarding prevention plate 9 of the second embodiment further includes a first auxiliary plate 9d connected to the upper end portion of the first frame body 9a. Further, the second boarding prevention plate 10 further includes a second auxiliary plate 10d connected to the upper end portion of the second frame 10a.

  The first auxiliary plate 9d is rotatably connected to the first frame body 9a via the first hinge 9e. A first auxiliary pin 24 is provided at the end of the first auxiliary plate 9d opposite to the first hinge 9e. The first auxiliary pin 24 is inserted into the guide groove 17a.

  The second auxiliary plate 10d is rotatably connected to the second frame 10a via the second hinge 10e. A second auxiliary pin 25 is provided at the end of the second auxiliary plate 10d opposite to the second hinge 10e. The second auxiliary pin 25 is inserted into the guide groove 17a.

  When the first and second boarding prevention plates 9 and 10 are positioned at the inclined storage position, the first and second auxiliary plates 9d and 10d are spaced from the first auxiliary pin 24 and the second auxiliary pin 25. Is inclined in the direction of decreasing. When the first and second boarding prevention plates 9 and 10 are displaced to the handrail position, the first auxiliary board 9d is folded toward the first boarding prevention board 9 and the second auxiliary board 10d is second boarding. Folded to the prevention plate 10 side. Other configurations and operations are the same as those in the first embodiment.

  In such an elevator apparatus, the first auxiliary plate 9d is provided on the first boarding prevention plate 9, and the second auxiliary plate 10d is provided on the second boarding prevention plate 10, so that the car 1 The first frame body 9a and the second frame body 10a when the first and second boarding prevention plates 9, 10 are displaced to the inclined storage position are large in the width direction (left and right direction in FIG. 7). Even when the distance W1 between the first and the second boarding prevention plates 9 and 10 is large, the distance W2 between the first boarding prevention plate 9 and the second boarding prevention plate 10 can be reduced (for example, 300 mm or less). Thereby, the movement of the worker from the landing to the car upper surface 1a can be prevented more reliably.

In the first and second embodiments, both the car-side stopper 12 and the top buffer 13 are used. However, the stopper that restricts the upward movement of the car 1 is either the car 1 side or the hoistway 3 side. You may provide only.
When only the car-side stopper is used, the car-side stopper regulates the upward movement of the car 1 by hitting an existing member in the hoistway 3 when the boarding prevention member is displaced to the handrail position.
When only the hoistway side stopper is used, the hoistway side stopper regulates the upward movement of the car 1 by hitting the car 1 side member when the boarding prevention member is displaced to the handrail position. Or the hoistway side stopper may be installed in the counterweight buffer (or the counterweight) installed in the pit of the hoistway 1 to restrict the upward movement of the car 1.

Embodiment 3 FIG.
Next, FIG. 8 is a front view showing a part of an essential part of an elevator apparatus according to Embodiment 3 of the present invention in a block form, and FIG. 9 is a front view showing a state during maintenance work on the car 1 of the elevator apparatus of FIG. FIG. 10 is a plan view showing the elevator apparatus of FIG. 9, and FIG. 11 is an enlarged front view showing the XI section of FIG.

  A handrail device 31 is erected on the upper surface 1a of the car. As shown in FIG. 10, the handrail device 31 is disposed on the rear edge and the right edge of the car top surface 1 a as viewed from the landing. Since the gap between the left side surface of the car 1 and the hoistway wall is small when viewed from the landing and there is no fear of the operator falling, the handrail device 31 is not arranged on the left side of the car top surface 1a.

  The handrail device 31 is fixed with respect to the handrail base 32 between the lower storage position shown in FIG. 8 and the upper protruding position shown in FIG. 9 by an operation on the car upper surface 1a. It has a handrail movable part 33 that can move up and down.

  The handrail device 31 is provided with a car-side stopper 34. The car-side stopper 34 falls outward when the handrail movable portion 33 is displaced to the upper protruding position, and protrudes to the outside of the car 1 when viewed from directly above. Further, the car-side stopper 34 is housed inside the car 1 as viewed from directly above by displacing the handrail movable portion 33 to the lower housing position.

  As shown in FIG. 11, the car-side stopper 34 is rotatable around a rotation shaft 34a provided at the lower end. Further, a projecting portion 34 b that hits the lower end portion of the handrail movable portion 33 is provided at the lower end portion of the car-side stopper 34. When the handrail movable portion 33 is displaced to the lower storage position, the projecting portion 34b is pushed down by the lower end portion of the handrail movable portion 33, and the car side stopper 34 rotates toward the handrail base portion 32 side.

  The car-side stopper 34 is applied with a force by a spring (not shown) or the like in a direction away from the handrail base 32. For this reason, when the handrail movable part 33 leaves | separates from the protrusion part 34b, the cage | basket | car side stopper 34 falls automatically outside.

  A top buffer 35 as a hoistway side stopper is provided at the top of the hoistway 3. The top buffer 35 is fixed to the hoistway wall. Further, the top buffer 35 mechanically restricts the upward movement of the car 1 due to the car-side stopper 34 hit when the handrail movable part 33 is displaced to the upper protruding position.

  The distance from the upper end of the handrail device 31 to the ceiling of the hoistway 3 when the car-side stopper 34 hits the top buffer 35 in a state where the handrail movable portion 33 is located at the upper protruding position is In a state of being located, the distance from the upper end of the handrail device 31 to the ceiling of the hoistway 3 when the car 1 has landed on the top floor is greater than or equal to the distance.

  The handrail device 31 is provided with a storage detection switch 36 for detecting that the handrail movable portion 33 is positioned at the lower storage position, and a protrusion detection switch 37 for detecting that the handrail movable portion 33 is positioned at the upper protrusion position. ing. As the storage detection switch 36 and the protrusion detection switch 37, switches that are mechanically operated are used. The handrail movable portion 33 is provided with a handrail position detection switch operation member 38 for operating the storage detection switch 36 and the protrusion detection switch 37.

  Signals from the storage detection switch 36 and the protrusion detection switch 37 are input to the elevator control device 5. The elevator control device 5 permits the operation of the car 1 in the normal operation mode when the handrail movable portion 33 is located at the lower storage position.

  The elevator control device 5 permits the car 1 to be operated in the maintenance operation mode when the handrail movable portion 33 is located at the upper protruding position, the operation mode is switched to the maintenance operation mode, and all landing doors are closed. To do.

  The handrail base 32 is provided with a top detection switch 39 (not shown in FIG. 10). The top detection switch 39 detects that the car 1 has reached the top in the hoistway 3 before the car-side stopper 34 hits the top buffer 35 when the handrail movable part 33 is displaced to the upper protruding position.

  A top detection switch operating member 40 (FIG. 9) for operating the top detection switch 39 is installed at the top in the hoistway 3. When the top detection switch 39 detects that the car 1 has reached the top in the hoistway 3, the elevator control device 5 shuts off the power supply to the drive device 4. When the power supply to the drive device 4 is cut off, the power supply to the motor that raises and lowers the car 1 is cut off, and the brake in the drive device 4 operates.

  Only some of the multiple-floor halls are designated as boarding-permitted halls where boarding from the hall to the car top surface 1a is permitted. In this example, the boarding permission boarding place is a boarding place on any one floor except the lowest floor.

  A drop prevention plate 41 is provided at a position corresponding to the boarding permission landing on the hoistway wall to prevent the operator from falling into the hoistway 3 from the car upper surface 1a. The fall prevention plate 41 is disposed in the hoistway 3 so as to face at least one of the car 1 and the handrail device 31 when the car 1 is stopped at a position where the car can be boarded from the boarding permission landing. Is provided in part. Other configurations are the same as those in the first embodiment.

  In such an elevator apparatus, the handrail movable portion 33 is located at the lower storage position during normal operation. For this reason, the height dimension of the handrail device 31 can be kept lower than, for example, 1100 mm (for example, 700 mm or less). Thereby, an increase in overhead dimension can be suppressed and space saving can be achieved.

  In addition, the worker gets into the car upper surface 1a from the boarding permission hall, but when the car 1 is stopped at a position where the car can be boarded from the boarding permission hall, the space between the car 1 and the hoistway wall. Since the fall prevention plate 41 is arranged, even when the horizontal distance between the handrail device 31 and the hoistway wall is large (for example, 500 mm or more), the operator is prevented from falling into the hoistway 3. .

  Furthermore, the increase in cost can be suppressed by limiting the installation range of the fall prevention plate 41 to only the portion corresponding to the boarding permission hall.

  Furthermore, when the worker moves to the car upper surface 1a and performs maintenance operation, the car 1 is moved to a position without the fall prevention plate 41 because the handrail movable portion 33 is displaced to the upper protruding position. In this case, the height dimension of the handrail device 31 can be set to a size (for example, 1100 mm or more) that prevents the operator from accidentally getting over the handrail device 23 and moving to the outside of the handrail device 31.

  Further, when the handrail movable portion 33 is located at the lower storage position, the upward movement of the car 1 is restricted to a position below the top floor landing position by the car-side stopper 34 and the top buffer 35. Even when the height of the handrail device 31 is high, a sufficient distance from the upper end of the handrail device 31 to the ceiling of the hoistway 3 can be secured.

  Thus, according to the elevator apparatus of Embodiment 1, it is possible to secure the necessary height dimension of the handrail device 31 during maintenance work on the car upper surface 1a while suppressing an increase in overhead dimension and an increase in cost. it can.

  When the handrail movable portion 33 is displaced to the upper protruding position, the top detection switch 39 detects that the car 1 has reached the top in the hoistway 3 before the car-side stopper 34 hits the top buffer 35. When the top detection switch 39 detects that the car 1 has reached the top in the hoistway 3, the power supply to the driving device 4 is cut off, so that the car-side stopper 34 collides with the top buffer 35. This can be avoided as much as possible, and the car-side stopper 34, the top buffer 35, and other equipment in the hoistway 3 can be prevented from being damaged.

  Further, since the car-side stopper 34 is displaced in conjunction with the displacement of the handrail movable portion 33, a switch for detecting the position of the car-side stopper 34 is unnecessary. Further, when the handrail movable portion 33 is displaced to the lower storage position after the maintenance is returned, the car-side stopper 34 is also housed, so that the car-side stopper 34 or the top buffer 35 can be prevented from being damaged due to work leakage.

In the third embodiment, both the car-side stopper 34 and the top buffer 35 are used. However, the stopper that restricts the upward movement of the car 1 is provided only on either the car 1 side or the hoistway 3 side. It may be provided.
When only the car side stopper is used, the car side stopper regulates the upward movement of the car 1 by hitting an existing member in the hoistway 3 when the handrail movable portion 33 is displaced to the upper protruding position. .
When only the hoistway side stopper is used, the hoistway side stopper restricts the upward movement of the car 1 by hitting the car 1 side member when the handrail movable portion 33 is displaced to the upper protruding position. Or the hoistway side stopper may be installed in the counterweight buffer (or the counterweight) installed in the pit of the hoistway 1 to restrict the upward movement of the car 1.

The top detection switch 39 and the top detection switch operation member 40 may be provided in the elevator apparatus according to the first and second embodiments.
Furthermore, the top detection switch 39 may be provided on the hoistway wall side, and the top detection switch operation member 40 may be provided on the car 1 side.
Furthermore, on which edge of the car upper surface 1a the handrail device is provided can be appropriately changed according to the horizontal distance to the hoistway wall.
In the above example, switches that are mechanically operated are used as the various switches. However, switches that are operated in a non-contact manner, such as electromagnetic or optical switches, can also be used.
Furthermore, in Embodiments 1 to 3, the configuration in which the handrail movable portion 33 slides in the vertical direction is shown. However, the handrail movable portion rotates (bends and extends) with respect to the handrail base and moves up and down. Also good.
Furthermore, two or more sets of the car side stopper and the hoistway side stopper may be provided.
Further, the present invention can be applied to various types of elevator apparatuses. For example, the present invention includes a 1: 1 roping elevator device, a 2: 1 roping elevator device, an elevator device having a machine room above the hoistway, a multi-car elevator device, or a double deck elevator device. Etc.

Claims (11)

A car having a horizontal car upper surface, and a car that moves up and down in the hoistway, and a handrail device provided on the car upper surface,
The handrail device has a boarding preventing member that prevents boarding from the landing to the upper surface of the car,
The boarding prevention member is tilted with respect to the upper surface of the car and tilted to prevent the boarding of the board from the landing to the upper surface of the car, and is set up on an edge of the upper surface of the car and from the landing to the upper surface of the car. It can be displaced by the operation from the landing between the handrail position that allows the boarding of
At least one of the car side and the hoistway side is provided with a stopper that mechanically limits the upward movement of the car when the boarding prevention member is displaced to the handrail position .
The boarding prevention member has first and second boarding prevention plates,
The elevator apparatus in which upper ends of the first and second boarding prevention plates intersect with each other when the first and second boarding prevention plates are located at the inclined storage position . The stopper includes a car side stopper provided in the handrail device,
2. The elevator apparatus according to claim 1, wherein the car-side stopper projects to the outside of the car when viewed from directly above when the boarding prevention member is displaced to the handrail position. The stopper includes a hoistway side stopper provided in the hoistway,
The elevator apparatus according to claim 2, wherein the hoistway side stopper mechanically restricts the upward movement of the car when the car side stopper hits when the boarding prevention member is displaced to the handrail position.   The elevator apparatus according to any one of claims 1 to 3, wherein when the boarding prevention member is positioned at the inclined storage position, an inclination angle of the boarding prevention member with respect to the upper surface of the car is 45 ° or more. The elevator apparatus according to any one of claims 1 to 4 , further comprising a left-right interlocking mechanism that mechanically interlocks the displacement of the first and second boarding prevention plates. The handrail device further includes a rear handrail that is erected on an inner edge of the upper surface of the car as viewed from the landing,
The back handrail has a handrail base fixed to the upper surface of the car, and a handrail movable portion movable up and down relative to the handrail base between a lower storage position and an upper protruding position,
The handrail movable portion is moved from the lower storage position to the upper protruding position in conjunction with the displacement of the boarding prevention member from the inclined storage position to the handrail position between the boarding prevention member and the back side handrail. The elevator apparatus according to any one of claims 1 to 5, wherein a back side handrail interlocking mechanism to be displaced is provided. A car that has a horizontal car top surface and that moves up and down in the hoistway;
A handrail having a handrail base fixed to the upper surface of the car, and a handrail movable portion movable up and down relative to the handrail base between a lower storage position and an upper protruding position by an operation on the upper surface of the car An apparatus, and a fall prevention plate that is provided on the hoistway wall and prevents the operator from falling from the upper surface of the car into the hoistway,
Only some of the multi-floor halls are designated as boarding permitted halls that are allowed to board the car,
The fall prevention plate is disposed in the hoistway so as to face at least one of the car and the handrail device when the car is stopped at a position where the car can be boarded from the boarding permission landing. In part,
At least one of the car side and the hoistway side is provided with a stopper that mechanically restricts the upward movement of the car when the handrail movable part is displaced to the upper protruding position. Elevator device. The stopper includes a car side stopper provided in the handrail device,
The elevator apparatus according to claim 7 , wherein the car-side stopper projects outward from the car when viewed from directly above when the handrail movable portion is displaced to the upper projecting position. The stopper includes a hoistway side stopper provided in the hoistway,
The elevator apparatus according to claim 8 , wherein the hoistway side stopper mechanically restricts the upward movement of the car when the car side stopper hits when the handrail movable part is displaced to the upper protruding position. . A driving device for raising and lowering the car; and when the handrail movable part is displaced to the upper projecting position, the car is moved to a top part in the hoistway before the upward movement of the car is restricted by the stopper. Further comprising a top detection switch for detecting that
When the said car reaches the top of the hoistway is detected by said top portion detection switch, according to any one of claims 7 to power supply to the drive is interrupted until claims 9 Elevator equipment. An elevator control device for controlling the operation of the car;
A storage detection switch for detecting that the handrail movable portion is positioned at the lower storage position; and a protrusion detection switch for detecting that the handrail movable portion is positioned at the upper protrusion position.
The elevator control device permits operation of the car in a normal operation mode when the handrail movable portion is located at the lower storage position, and when the handrail movable portion is located at the upper protruding position, The elevator apparatus according to any one of claims 7 to 10 , wherein the operation of the car in the maintenance operation mode is permitted.

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