WO2022259359A1

WO2022259359A1 - Handrail and elevator

Info

Publication number: WO2022259359A1
Application number: PCT/JP2021/021716
Authority: WO
Inventors: 智貴仮屋; 麻里大菅; 基史遠藤
Original assignee: 株式会社日立製作所
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-12-15
Also published as: EP4353644A1; CN117425612A; JPWO2022259359A1

Abstract

A plurality of support posts for a handrail are fixed to the upper section of an elevator car. A plurality of sliding posts are slidably engaged with each of the plurality of support posts and are capable of protruding further upward than the upper sections of the plurality of support posts. A rail section is fixed to the plurality of sliding posts. As a result of a first switch section and a second switch section interfering with a sliding post for switching which is one of the plurality of sliding posts, it becomes impossible to turn the first switch section and the second switch section on. When in an expanded state in which the plurality of sliding posts are extended out from the upper sections of the upper sections of the plurality of support posts, the first switch section interferes with the sliding post for switching, and interference between the second switch section and the sliding post for switching is avoided.

Description

handrails and elevators

The present invention relates to handrails and elevators equipped with the handrails.

　When inspecting the equipment installed in the hoistway of the elevator, workers sometimes work on the upper part of the car. For this reason, handrails are provided on the top of the car to ensure the safety of workers. A handrail provided on the top of a car is described, for example, in US Pat.

Patent Document 1 discloses a car handrail that is foldably arranged on the top of an elevator car. The car handrail includes one side portion and another side portion respectively disposed along the side of the car. One side is fixed to one arm along one car side and the other side is fixed to the other arm along the other car side. there is When the car handrail is folded, one side portion is connected to the other arm portion. As a result, the force generated when the door is opened and closed is received by both the one arm and the other arm.

JP 2016-147727 A

However, when assembling the car handrail described in Patent Document 1 from the folded state, it was difficult to secure a space for workers to ride on the top of the car. Therefore, it is necessary to assemble the car handrail without getting on the upper part of the car until a space for the worker to ride is secured, which complicates the assembling work.

In consideration of the above problems, the purpose is to provide a handrail that can be easily assembled above the car, and an elevator equipped with the handrail.

To solve the above problems and achieve the present object, the handrail of the present invention comprises a plurality of posts, a plurality of slide posts, a rail portion, a first switch portion and a second switch portion. A plurality of struts are fixed to the top of the car. The plurality of slide columns are slidably engaged with the plurality of columns and can protrude above the tops of the plurality of columns. The rail portion is fixed to a plurality of slide columns. The first switch section and the second switch section cannot be turned on by interfering with the switch slide column, which is one of the plurality of slide columns. In the expanded state in which the plurality of slide columns extend from the top of the plurality of columns, the first switch section interferes with the switch slide column, and the second switch section is prevented from interfering with the switch slide column.
Further, the elevator of the present invention includes a car that ascends and descends in a hoistway, and the handrail provided above the car.

According to the handrail with the above configuration, assembly work can be easily performed on the top of the car.

It is a schematic block diagram which shows the elevator concerning one Embodiment. 1 is a perspective view showing a contracted state of a handrail according to one embodiment; FIG. 1 is a perspective view showing an expanded state of a handrail according to one embodiment; FIG. 1 is a perspective view showing a switch portion of a handrail according to one embodiment; FIG. FIG. 10 is an explanatory diagram showing ON/OFF of the switch unit in the contracted state of the handrail according to the embodiment; FIG. 11 is an explanatory diagram showing ON/OFF of the switch unit during extension of the handrail according to one embodiment; It is an explanatory view showing ON/OFF of the switch unit in the extended state of the handrail according to the embodiment. FIG. 10 is an explanatory diagram showing ON/OFF of the switch unit during retraction of the handrail according to the embodiment; 4 is a table showing ON/OFF patterns of a switch unit and operating conditions of an elevator according to one embodiment; It is a perspective view which expands and shows the temporary fixation mechanism of the handrail concerning one Embodiment. It is an explanatory view showing a temporary fixation mechanism in the contracted state of the handrail according to one embodiment. It is explanatory drawing which shows the state which temporarily fixed the slide column by the temporary fixing mechanism of the handrail concerning one Embodiment. It is a perspective view which expands and shows the fixing mechanism of the handrail concerning one Embodiment. FIG. 4 is an explanatory diagram showing fixing work by the fixing mechanism of the handrail according to the embodiment; It is a perspective view which expands and shows the fixing mechanism in the temporarily fixed state of the handrail concerning one Embodiment. It is a perspective view which expands and shows the slide guide mechanism of the handrail concerning one Embodiment.

An elevator according to an embodiment will be described below with reference to FIGS. 1 to 16. FIG. In addition, the same code|symbol is attached|subjected to the member which is common in each figure.

[Elevator configuration]
First, the configuration of an elevator according to one embodiment (hereinafter referred to as "this example") of the present invention will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram showing a configuration example of an elevator of this example.

As shown in FIG. 1, the elevator 1 of this example moves up and down in a hoistway 110 formed in the building structure. The elevator 1 includes a car 120 for carrying people and luggage, a rope 130, a counterweight 140, and a hoist 100. - 特許庁The hoistway 110 is formed within the building structure and has a machine room 160 at its top.

The hoisting machine 100 is arranged in the machine room 160 and raises and lowers the car 120 by winding the rope 130 around it. A deflection wheel 150 is provided near the hoist 100 . A rope 130 is attached to the deflection wheel 150 .

The balance weight 140 is set to have approximately the same mass as the mass of the car 120 when it is unloaded. Therefore, when the car 120 is not loaded with objects or people, the tension ratio between the ropes 130 on the car 120 side and the counterweight 140 side is 1. As a result, it is possible to keep the output of the hoist 100 low when there is no load.

The car 120 is connected to the counterweight 140 via the rope 130 and ascends and descends in the hoistway 110 . A handrail 200 is provided on the top of the car 120 . Also, in the machine room 160, a control board 170 showing a specific example of the control section according to the present invention is arranged. The control board 170 controls the driving of the hoisting machine 100 and controls the lifting operation of the car 120 .

[Handrail configuration]
Next, the configuration of the handrail 200 will be described with reference to FIGS. 2 and 3. FIG.
FIG. 2 is a perspective view showing the contracted state of the handrail 200. As shown in FIG. FIG. 3 is a perspective view showing the expanded state of the handrail.

The handrail 200 installed on the top of the car 120 (see FIG. 1) can be in the contracted state shown in FIG. 2 and the expanded state shown in FIG. For normal operation of the elevator 1, the handrail 200 is retracted. This prevents the handrail 200 from interfering with the machine room 160 of the hoistway 110 . On the other hand, when maintenance/inspection of the elevator 1 is to be performed, the handrail 200 is extended. This allows the operator to hold onto the handrail 200 when working on the top of the car 120 .

　In Figures 2 and 3, the X-axis direction indicates the entrance/exit direction of the elevator, the Y-axis direction indicates the width direction of the entrance/exit of the elevator, and the Z-axis direction indicates the height direction of the elevator. The X-axis direction and the Y-axis direction correspond to horizontal biaxial directions that are two axial directions parallel to the horizontal plane, and the Z-axis direction corresponds to the vertical direction that is orthogonal to the horizontal plane. In addition, the entrance/exit direction of the elevator corresponds to the depth direction when viewing the hoistway from the elevator hall, that is, the direction in which people enter and exit, and the width direction of the elevator entrance/exit corresponds to the direction in which the elevator door opens and closes. .

The handrail 200 has a support unit 201 fixed to the top of the car 120 (see FIG. 1), and a first movable unit 202A and a second movable unit 202B movably connected to the support unit 201. .

(support unit)
The support unit 201 has six

struts

211a, 211b, 211c, 211d, 211e, and 211f, two reinforcing

portions

212 and 213, and a reinforcing connecting portion 214 connecting the two reinforcing

portions

212 and 213 together. The support unit 201 also has a column connection portion 215 that connects the

columns

211a and 211d.

The

struts

211a, 211b, and 211c are arranged in the X-axis direction at appropriate intervals. The

columns

211d, 211e, and 211f are arranged in the X-axis direction at appropriate intervals. Hereinafter, the support 211b side viewed from the support 211a is defined as the rear side in the X-axis direction, and the side opposite to the support 211b as viewed from the support 211a is defined as the X-axis direction front side.

In the Y-axis direction, the support 211a faces the support 211d, the support 211b faces the support 211e, and the support 211c faces the support 211f. Hereinafter, the side of the column 211d viewed from the column 211a is defined as the right side in the Y-axis direction, and the side opposite to the column 211d as viewed from the column 211a is defined as the left side in the Y-axis direction.

The struts 211a to 211f are formed in a square tubular shape. Each of the columns 211a to 211f has four side surfaces, one of which is open, and has a substantially C-shaped cross section parallel to the horizontal plane. The opening surfaces of the support columns 211a to 211f face the back side in the X-axis direction.

The struts 211a-211f extend along the Z-axis direction. A fixing member 217 is provided at each of the lower ends of the columns 211a to 211f in the Z-axis direction. The fixing members 217 of the

struts

211b, 211c, 211e, and 211f are fixed to the top of the car 120. As shown in FIG.

A reinforcing base 218 is attached to the fixing member 217 of the

pillars

211a and 211d. The reinforcing base 218 is made of a plate that is bent into a substantially L shape. The reinforcing base 218 has a mounting plate portion having a plane substantially perpendicular to the Y-axis direction and a reinforcing plate portion having a plane substantially perpendicular to the X-axis direction.

The fixing members 217 of the

struts

211 a and 211 d are fixed to the upper part of the car 120 via the column connecting parts 215 . The column connecting portion 215 is formed of a rectangular plate elongated in the Y-axis direction and side pieces that rise substantially perpendicularly from the long sides of the plate. The

struts

211 a and 211 d are integrally assembled using a pillar connecting portion 215 .

A switch unit 240A is attached to the strut 211a. The switch unit 240A detects the position of the first movable unit 202A in the Z-axis direction. A switch unit 240B is attached to the post 211d. The switch unit 240B detects the position of the second movable unit 202B in the Z-axis direction. The configuration of the

switch units

240A and 240B will be described later with reference to FIG.

A temporary fixing mechanism 270A is provided on the post 211b. A temporary fixation mechanism 270B is provided on the post 211e.

Temporary fixing mechanisms

270A and 270B

point slide columns

221b and 221e, which will be described later, at predetermined positions, respectively. Thereby, the first movable unit 202A and the second movable unit 202B are held at the temporarily fixed position. The configuration of the

temporary fixing mechanisms

270A and 270B will be described later with reference to FIGS. 10 to 12. FIG.

The reinforcing

parts

212 and 213 are formed in an elongated shape extending in the X-axis direction. The reinforcing portion 212 is fixed to the middle portion in the Z-axis direction of the

struts

211a, 211b, and 211c. One end of the reinforcing portion 212 in the X-axis direction is fixed to the support 211a. The reinforcing portion 213 is fixed to the Z-axis direction intermediate portions of the

supports

211c, 211d, and 211f. One end of the reinforcing portion 213 in the X-axis direction is fixed to the support 211c.

The reinforcing connection portion 214 is formed in an elongated shape extending in the Y-axis direction. Both ends of the reinforcement connection portion 214 in the Y-axis direction are connected to the other ends of the

reinforcement portions

212 and 213 in the X-axis direction, respectively.
(movable unit)

The first movable unit 202A is movably connected to the

supports

211a, 211b, and 211c of the support unit 201. As shown in FIG. 3, the first movable unit 202A has

slide columns

221a, 221b, 221c, a side rail portion 222, and a back rail portion 223. As shown in FIG.

The

slide columns

221a, 221b, 221c are slidably connected to the inner sides of the

columns

211a, 211b, 211c. As a result, the

slide columns

221a, 221b, 221c move in the Z-axis direction along the

columns

211a, 211b, 211c.

In the contracted state of the handrail 200, the

slide columns

221a, 221b, 221c retract into the

supports

211a, 211b, 211c. On the other hand, in the extended state of the handrail 200, the

slide columns

221a, 221b, 221c extend from the tops of the

columns

211a, 211b, 211c.

The

slide columns

221a, 221b, and 221c are formed in a square tubular shape smaller than the column 211a. Each of the

slide columns

221a, 221b, and 221c has four side surfaces that are open, and has a substantially C-shaped cross section parallel to the horizontal plane. The opening surfaces of the

slide columns

221a, 221b, and 221c face rightward in the Y-axis direction.

The side rail portion 222 is fixed to the upper portions of the

slide columns

221a, 221b, and 221c. The side rail portion 222 is formed in an elongated shape extending in the X-axis direction. The upper surface of the side rail portion 222 is formed on a plane substantially perpendicular to the Z-axis direction. The upper surface of the side rail portion 222 is set at approximately the same height as the upper ends of the

slide columns

221a, 221b, and 221c. The side rail portion 222 faces the reinforcing portion 212 of the support unit 201 in the Z-axis direction.

The back rail portion 223 is connected to the end of the side rail portion 222 on the back side in the X-axis direction. As a result, the inner rail portion 223 moves in the Z-axis direction together with the side rail portion 222 . The inner rail portion 223 is formed in an elongated shape extending in the Y-axis direction. The upper surface of the inner rail portion 223 is formed on a plane substantially perpendicular to the Z-axis direction. The upper surface of the inner rail portion 223 is set at substantially the same height as the upper surface of the side rail portion 222 .

The inner rail portion 223 faces the reinforcing connection portion 214 of the support unit 201 in the Z-axis direction. The length of the back rail portion 223 in the Y-axis direction is set to about half the length of the reinforcing connection portion 214 in the Y-axis direction. The inner rail portion 223 has a stopper piece 223a. In the contracted state of the handrail 200, the stopper piece 223a abuts on the upper surface of the reinforcing connecting portion 214. As shown in FIG. In the extended state of the handrail 200, the side rail portion 222 and the inner rail portion 223 are arranged at a predetermined height that is easily grasped by the operator.

The second movable unit 202B is formed symmetrically with the first movable unit 202A. That is, the second movable unit 202B has

slide columns

221d, 221e, and 221f, a side rail portion 224, and a back rail portion 225. As shown in FIG. The second movable unit 202B is movably connected to the

supports

211d, 211e, and 211f of the support unit 201. As shown in FIG.

The

slide columns

221d, 221e, 221f are slidably connected to the inner sides of the

columns

211d, 211e, 211f. As a result, the

slide columns

221d, 221e, and 221f move in the Z-axis direction along the

columns

211d, 211e, and 211f. The opening surfaces of the

slide columns

221d, 221e, and 221f face leftward in the Y-axis direction.

In the contracted state of the handrail 200, the

slide columns

221d, 221e and 221f fold into the

supports

211d, 211e and 211f. On the other hand, in the extended state of the handrail 200, the

slide columns

221d, 221e and 221f extend from the tops of the

columns

211d, 211e and 211f.

The side rail portion 224 faces the reinforcing portion 213 of the support unit 201 in the Z-axis direction. The inner rail portion 225 moves together with the side rail portion 224 in the Z-axis direction. The inner rail portion 225 faces the reinforcing connection portion 214 of the support unit 201 in the Z-axis direction. The length of the back rail portion 225 in the Y-axis direction is set to about half the length of the reinforcing connection portion 214 in the Y-axis direction.

In the contracted state of the handrail 200 , the stopper piece (not shown) of the inner rail portion 225 contacts the upper surface of the reinforcing connection portion 214 . The back rail portion 225 faces the back rail portion 223 in the contracted state and the extended state of the handrail 200 . That is, the left end face of the inner rail portion 225 in the Y-axis direction faces the right end face of the inner rail portion 223 in the Y-axis direction.

In the contracted state and expanded state of the handrail 200, the side rail portion 224 and the inner rail portion 225 are arranged at the same height as the side rail portion 222 and the inner rail portion 223 of the first movable unit 202A.

As shown in FIG. 2, in the contracted state of the handrail 200, the upper ends of the slide columns 221a to 221f in the first movable unit 202A and the second movable unit 202B are substantially at the same height as the upper ends of the columns 211a to 211f in the support unit 201. become. In the contracted state of the handrail 200, the first movable unit 202A and the second movable unit 202B are fixed to the support unit 201 using the fixing mechanism 300, which will be described later.

In order to extend the handrail 200 from the contracted state, the first movable unit 202A and the second movable unit 202B are moved in the Z-axis direction (upward) to move the

side rail portions

222, 224 and the

inner rail portions

223, 225. are placed at a predetermined height. Next, the first movable unit 202A and the second movable unit 202B are fixed to the support unit 201 using the fixing mechanism 300, which will be described later. This brings the handrail 200 into the extended state shown in FIG.

(switch unit)
Next, configurations of the

switch units

240A and 240B will be described with reference to FIG.
4 is a perspective view showing the switch unit 240B of the handrail 200. FIG.

The

switch units

240A and 240B have the same configuration. Therefore, the configuration of the switch unit according to the present invention will be described here by taking the switch unit 240B as an example.

As shown in FIG. 4, the switch unit 240B has a first switch 251 section and a second switch section 252. The first switch section 251 and the second switch section 252 are attached to a switch base 219 provided on the support 211d. The first switch 251 section is arranged above the second switch section 252 .

The first switch section 251 is composed of a normal switch 254 and a first operating element 255 . The normal switch 254 and the first operating element 255 face each other in the X-axis direction. The side of the first operating element 255 opposite to the normal switch 254 faces the slide column 221d. An actuator (not shown) of the switch unit 240A faces the slide column 221a. The

slide columns

221a and 221d correspond to switch slide columns according to the present invention.

The second switch section 252 is composed of a maintenance switch 256 and a second operating element 257. The maintenance switch 256 and the second operator 257 face each other in the X-axis direction. The side of the second operator 257 opposite to the maintenance switch 256 faces the slide column 221d. The normal switch 254 and the maintenance switch 256 face each other in the Z-axis direction. The

first operating elements

255 and 257 face each other in the Z-axis direction.

The normal switch 254 and maintenance switch 256 are fixed to the switch base 219 . The normal switch 254 and the maintenance switch 256 are so-called momentary switches. The normal switch 254 and the maintenance switch 256 are turned off when the

buttons

254a and 256a are pressed, and turned on when the

buttons

254a and 256a are not pressed.

The first actuator 255 consists of a rectangular plate elongated in the X-axis direction. An end face 255a of the first actuator 255 on the normal switch 254 side faces the button 254a of the normal switch 254 in the X-axis direction. On the opposite side of the normal switch 254 of the first operating element 255, an inclined surface 255b facing downward is formed. The inclined surface 255b faces the slide column 221d through the opening of the column 211d.

The switch base 219 supports the first actuator 255 so as to be movable in the X-axis direction. The first operating element 255 is movable between a first position that does not interfere with the slide column 221d and a second position that is closer to the X-axis direction than the first position (slide column 221d).

When the first actuator 255 is placed at the first position, the end face 255a of the first actuator 255 pushes the button 254a of the normal switch 254. As a result, the normal switch 254 is turned off. On the other hand, when the first actuator 255 is arranged at the second position, the end surface 255a of the first actuator 255 does not press the button 254a of the switch 254 normally. As a result, the normal switch 254 is turned ON.

The second actuator 257 consists of a rectangular plate elongated in the X-axis direction. An end surface 257a of the second operating member 257 on the side of the maintenance switch 256 faces the button 256a of the maintenance switch 256 in the X-axis direction. On the opposite side of the second operating element 257 from the maintenance switch 256, an upward inclined surface 257b is formed. The inclined surface 257b faces the slide column 221d through the opening of the column 211d.

The switch base 219 supports the second actuator 257 so as to be movable in the X-axis direction. The second operator 257 can move between a first position that does not interfere with the slide column 221d and a second position that is closer to the front side (the slide column 221d) than the first position in the X-axis direction.

When the second actuator 257 is placed at the first position, the end face 257a of the second actuator 257 pushes the button 256a of the maintenance switch 256. As a result, the maintenance switch 256 is turned off. On the other hand, when the second actuator 257 is arranged at the second position, the end surface 257a of the second actuator 257 does not press the button 256a of the maintenance switch 256. As shown in FIG. As a result, the maintenance switch 256 is turned ON.

As shown in FIG. 4, the slide column 221d has a notch 228. The notch 228 is provided on the side piece of the slide column 221d exposed from the opening surface of the column 211d. The notch is formed in a rectangular shape that is larger than the side portion of the first actuator 255 where the inclined surface 255b is formed.

The notch 228 faces the inclined surface 255b of the first operating element 255 when the handrail 200 is contracted. As a result, the first operating element 255 does not interfere with the slide column 221d and can be arranged at the second position. On the other hand, when the notch 228 does not face the inclined surface 255b of the first operating member 255, the first operating member 255 interferes with the slide column 221d. Accordingly, the first actuator 255 cannot be arranged at the second position.

(Switch section with handrail contracted)
Next, the switch unit 240B in the retracted state of the handrail 200 will be described with reference to FIG.
FIG. 5 is an explanatory diagram showing ON/OFF of the switch portion when the handrail 200 is contracted.

When operating the elevator 1 normally, the handrail 200 is retracted. As shown in FIG. 5, in the contracted state of the handrail 200, it faces the notch 228 of the slide column 221d. Therefore, the first actuator 255 of the first switch portion 251 can be arranged at the second position. On the other hand, the second actuator 257 of the second switch portion 252 cannot be placed at the second position because it interferes with the slide column 221d.

When the handrail 200 is contracted, the first operator 255 is placed at the second position. Thereby, the first actuator 255 does not press the button 254 a of the normal switch 254 . As a result, the normal switch 254 is turned ON. On the other hand, the second operator 257 cannot be placed at the second position, so the button 256a of the maintenance switch 256 is pressed. As a result, the maintenance switch 256 cannot be turned ON. Therefore, maintenance switch 256 is OFF.

(Switch section during extension of handrail)
Next, the switch unit 240B during extension of the handrail 200 will be described with reference to FIGS. 6A and 6B.
6A and 6B are explanatory diagrams showing ON/OFF of the switch unit 240B while the handrail 200 is extended.

When performing maintenance/inspection of the elevator 1, the handrail 200 is changed from the retracted state to the extended state. To extend the handrail 200, the first movable unit 202A and the second movable unit 202B (see FIG. 2) are raised.

When the second movable unit 202B is raised, the slide columns 221d-221f move upward in the Z-axis direction along the columns 211d-211f. At this time, the lower end of the notch 288 in the slide column 221d presses the inclined surface 255b of the first actuator 255, as shown in FIG. 6A. As a result, the first operating element 255 moves in a direction approaching the normal switch 254 (back side in the X-axis direction).

When the slide columns 221d to 221f move further upward in the Z-axis direction, the notch 288 of the slide column 221d is positioned higher than the first actuator 255, as shown in FIG. 6B. , the tip on the inclined surface 255b side comes into contact with the side surface of the slide column 221d. As a result, the first actuator 255 is placed at the first position and presses the button 254 a of the normal switch 254 . As a result, the normal switch 254 is turned off.

As shown in FIGS. 6A and 6B, while the slide column 221d is moving upward, the tip of the second actuator 257 on the inclined surface 257b side is always in contact with the side surface of the slide column 221d. As a result, the second operator 257 does not move from the first position and maintains the state in which the button 256a of the maintenance switch 256 is pressed. As a result, the maintenance switch 256 remains OFF.

(Switch part in the extended state of the handrail)
Next, the switch unit 240B in the retracted state of the handrail 200 will be described with reference to FIGS. 7A and 7B.
7A and 7B are explanatory diagrams showing ON/OFF of the switch unit 240B in the extended state of the handrail 200. FIG.

When the handrail 200 is in the extended state, the lower end of the slide column 221d is positioned above the second actuator 257 of the second switch section 252, as shown in FIG. 7A. As a result, the second actuator 257 of the second switch portion 252 does not interfere with the slide column 221d and can be arranged at the second position. On the other hand, the first actuator 255 of the first switch portion 251 cannot be placed at the second position because it interferes with the slide column 221d.

When the handrail 200 is in the extended state, the second operator 257 is placed at the second position, as shown in FIG. 7B. Thereby, the second operator 257 does not press the button 256 a of the maintenance switch 256 . As a result, the maintenance switch 256 is turned ON. On the other hand, since the first actuator 255 cannot be placed at the second position, the button 254a of the normal switch 254 is pressed. As a result, the normal switch 254 cannot be turned ON. Therefore, the normal switch 254 is OFF.

(Switch part during contraction of handrail)
Next, the switch unit 240B during contraction of the handrail 200 will be described with reference to FIGS. 8A and 8B.
8A and 8B are explanatory diagrams showing ON/OFF of the switch unit 240B while the handrail 200 is retracted.

When the elevator 1 is to be operated normally after maintenance/inspection of the elevator 1 is finished, the handrail 200 is changed from the extended state to the contracted state. To retract the handrail 200, the first movable unit 202A and the second movable unit 202B (see FIG. 2) are lowered.

When the second movable unit 202B is lowered, the slide columns 221d-221f move downward in the Z-axis direction along the columns 211d-211f. At this time, the lower end of the slide column 221d presses the inclined surface 257b of the second operating element 257, as shown in FIG. 8A. As a result, the second operator 257 moves toward the maintenance switch 256 (backward in the X-axis direction).

When the slide columns 221d to 221f move further downward in the Z-axis direction, as shown in FIG. The tip on the surface 257b side comes into contact with the side surface of the slide column 221d. Thereby, the second actuator 257 is placed at the first position and presses the button 256 a of the maintenance switch 256 . As a result, maintenance switch 256 is turned off.

As shown in FIGS. 8A and 8B, while the slide column 221d is moving downward, the tip of the first actuator 255 on the inclined surface 255b side is always in contact with the side surface of the slide column 221d. As a result, the first actuator 255 does not move from the first position, and maintains the state in which the button 254a of the normal switch 254 is pressed. As a result, the normal switch 254 does not change from OFF.

(ON/OFF pattern of switch unit and operating conditions of elevator)
Next, the ON/OFF pattern of the switch unit 240B and the operating conditions of the elevator 1 will be described with reference to FIG.
FIG. 9 is a table showing ON/OFF patterns of the switch unit 240B and operating conditions of the elevator 1. As shown in FIG.

As shown in FIG. 9, when the normal switch 254 is ON and the maintenance switch 256 is OFF, the handrail 200 is in the retracted state (see FIG. 5). The control board 170 (see FIG. 1) thus allows normal operation of the elevator 1 . On the other hand, when the normal switch 254 is OFF and the maintenance switch 256 is ON, the handrail 200 is in the extended state (see FIG. 7B). Therefore, the control board 170 enables maintenance operation of the elevator 1 .

When the normal switch 254 and the maintenance switch 256 are ON, the control board 170 disables the operation of the elevator 1. As shown in FIGS. 5-8, the situation where the normal switch 254 and the maintenance switch 256 are both ON is normally not possible. Therefore, the control board 170 detects that the handrail 200 or the

switch units

240A, 240B has become abnormal. Then, the control board 170 notifies that an abnormality has occurred. The occurrence of an abnormality can be indicated by, for example, lighting of a lamp, output of a buzzer, video, image, or the like.

When normal switch 254 and maintenance switch 256 are OFF, control board 170 disables operation of elevator 1 . As shown in FIGS. 6B and 7A, during extension and retraction of handrail 200, normal switch 254 and maintenance switch 256 may be OFF together. The handrail 200 at this time is neither in the contracted state nor in the extended state. Therefore, the control board 170 determines that the handrail 200 is expanding or contracting,
Elevator 1 is disabled.

(Temporary fixing mechanism)
Next, configurations of the

temporary fixing mechanisms

270A and 270B will be described with reference to FIGS. 10 to 12. FIG.
FIG. 10 is an enlarged perspective view of the temporary fixing mechanism 270B. FIG. 11 is an explanatory diagram showing the temporary fixing mechanism 270B in the retracted state of the handrail 200. As shown in FIG. FIG. 12 is an explanatory diagram showing a state in which the slide column 221e is temporarily fixed by the temporary fixing mechanism 270B of the handrail 200. As shown in FIG.

The

temporary fixing mechanisms

270A and 270B have the same configuration. Therefore, the configuration of the temporary fixing mechanism according to the present invention will be described here by taking the temporary fixing mechanism 270B as an example.

As shown in FIG. 10, the temporary fixing mechanism 270B has a stopper 281 and a shaft portion 282 that rotatably supports the stopper 281. The stopper 281 is composed of a base portion 285 and a hook portion 286 continuous with the base portion 285 . The shaft portion 282 is fixed to the hook base 220 provided on the post 211e.

The base portion 285 consists of a substantially rectangular plate. The hook portion 286 protrudes from one long side of the base portion 285 . The hook portion 286 is formed of a plate having a substantially L-shaped planar shape. The hook portion 286 faces the slide column 221e via the opening surface of the column 211e (see FIG. 11).

The shaft portion 282 passes through the base portion 285 above the hook portion 286 . Due to its own weight, the stopper 281 is stabilized in a posture in which the two long sides of the base portion 285 are substantially parallel to the Z-axis direction. In the contracted state of the handrail 200, the hook portion 286 contacts the side surface of the slide column 221e before the two long sides of the base portion 285 become substantially parallel to the Z-axis direction. Thereby, the stopper 281 is leaned against the side surface of the slide column 221e with the two long sides of the base portion 285 inclined with respect to the Z-axis direction.

As shown in FIG. 11, when the handrail 200 is contracted, the hook portion 286 of the stopper 281 is in contact with the side surface of the slide column 221e. When the second movable unit 202B is lifted to change the handrail 200 from the contracted state to the extended state, the slide column 221e moves upward in the Z-axis direction along the column 211e while contacting the hook portion 286.

As shown in FIG. 12, when the lower end of the slide column 221e moving upward in the Z-axis direction is positioned above the hook portion 286, the hook portion 286 rotates due to its own weight and assumes a stable posture. Thereby, the hook portion 286 supports the lower end of the slide column 221e. As a result, the second movable unit 202B is temporarily fixed.

In order to release the temporary fixation of the second movable unit 202B, the slide column 221e is moved further upward from the temporarily fixed position. As a result, the engagement between the hook portion 286 and the slide column 221e is released. Next, the stopper 281 is rotated to separate the hook portion 286 from the slide column 221e. As a result, the temporary fixation of the second movable unit 202B is released.

When the temporary fixation of the second movable unit 202B is released, the stopper 281 may be rotated until the hook portion 286 is positioned above the shaft portion 282 to bring the base portion 285 into contact with the side surface of the slide column 221e. good. As a result, the stopper 281 cannot return to a stable posture due to its own weight, and the user can release the stopper 281 when moving the slide column 221e downward. Also, a convex portion may be provided on the side surface of the slide column 221e so that it contacts the base portion 285 when the slide column 221e moves downward. As a result, the stopper 281 rotates and the hook portion 286 contacts the side surface of the slide column 221e below the shaft portion 282 (the state shown in FIG. 10).

(fixing mechanism)
Next, the configuration of fixing mechanism 300 will be described with reference to FIG. 13 .
13 is an enlarged perspective view of the fixing mechanism 300. FIG.

One fixing mechanism 300 is provided for each set of support column and slide column. That is, the handrail 200 has six fixing mechanisms 300 . Here, the fixing mechanism 300 provided in the pair of the support column 211d and the slide column 221d will be described as an example.

As shown in FIG. 13, the fixing mechanism 300 is composed of a bolt 301, a welding nut 302 to which the bolt 301 is screwed, and a fitting portion 303 to which the tip of the bolt 301 is fitted. A bolt 301 and a weld nut 302 are attached to the support 211d. Also, the fitting portion 303 is attached to the slide column 221d.

As shown in FIG. 13, the column 211d includes a left side plate 401 forming a left side surface in the Y-axis direction, a right side plate 402 forming a right side surface in the Y-axis direction, and a front side surface in the X-axis direction. It has a front side plate 403 forming. The slide column 221d includes a right side plate 412 forming a right side surface in the Y-axis direction, a front side plate 413 forming a front side surface in the X-axis direction, and a back side plate 413 forming a back side surface in the X-axis direction. and a side plate 414 .

The weld nut 302 is welded to the left side plate 401 of the support 211d. The bolt 301 is screwed into the weld nut 302 and passes through the left side plate 401 of the support 211d. The head of the bolt 301 is arranged outside the strut 211d. The tip of the bolt 301 opposite to the head is arranged inside the support 211d and faces the right side plate 412 of the slide post 221d.

The fitting portion 303 is fixed to the right side plate 412 of the slide column 221d. The fitting portion 303 is made of a rectangular plate. One plane of the fitting portion 303 is in contact with the inner surface of the right side plate 412 . The fitting portion 303 has a bolt fitting hole 303a (see FIG. 15) into which the tip of the bolt 301 is fitted. The diameter of the bolt fitting hole 303 a is slightly larger than the diameter of the tip of the bolt 301 .

(fixing work by fixing mechanism)
Next, the fixing operation by the fixing mechanism 300 will be described with reference to FIGS. 14 and 15. FIG.
FIG. 14A is a diagram showing a state in which the second movable unit 202B is fixed by the fixing mechanism 300 in the retracted state of the handrail 200. FIG. FIG. 14B is a diagram showing a state in which fixing of the second movable unit 202B by the fixing mechanism 300 is released. 14C is a diagram showing a state in which the second movable unit 202B is fixed by the fixing mechanism 300 in the extended state of the handrail 200. FIG. FIG. 15 is an enlarged perspective view showing the fixing mechanism 300 in the temporarily fixed state of the handrail 200. FIG.

First, the fixation of the second movable unit 202B in the contracted state of the handrail 200 will be described. As shown in FIG. 14A, in the retracted state of the handrail 200, the tip of the bolt 301 in the fixing mechanism 300 is pressed against the right side plate 412 of the slide column 221d. As a result, the slide column 221d (second movable unit 202B) is prevented from moving in the Z-axis direction. As a result, in the contracted state of the handrail 200, the slide column 221d (second movable unit 202B) is fixed.

When changing the handrail 200 from the contracted state to the expanded state, as shown in FIG. 14B, the bolt 301 of the fixing mechanism 300 is pressed against the slide column 221d. This allows the slide column 221d (second movable unit 202B) to move in the Z-axis direction. Since the bolt 301 is screwed onto the weld nut 302, the pressing force can be loosened without removing the bolt 301 from the support 211d. Then, the slide column 221d (second movable unit 202B) is moved upward in the Z-axis direction.

When the handrail 200 is in the expanded state, the bolt fitting hole 303a of the fitting portion 303 fixed to the slide column 221d faces the tip of the bolt 301. Next, the tip of the bolt 301 is fitted into the bolt fitting hole 303a. As a result, the slide column 221d (second movable unit 202B) is prevented from moving in the Z-axis direction. As a result, in the extended state of the handrail 200, the slide column 221d (second movable unit 202B) is fixed.

When the handrail 200 is in the extended state, the slide column 221d (second movable unit 202B) is supported and temporarily fixed by the stopper 281 of the temporary fixing mechanism 270B. The position in the Z-axis direction of the slide column 221d (second movable unit 202B) permanently fixed by the fixing mechanism 300 in the extended state is set to a position higher than the temporary fixing position of the slide column 221d (second movable unit 202B). It is

As shown in FIG. 15, when the slide column 221d (second movable unit 202B) is temporarily fixed, the bolt fitting hole 303a of the fitting portion 303 is positioned below the tip of the bolt 301. As shown in FIG. Therefore, the slide column 221d (second movable unit 202B) cannot be permanently fixed by the fixing mechanism 300 at the temporarily fixed position.

Further, as shown in FIG. 15, when the slide column 221d (the second movable unit 202B) is temporarily fixed, the lower end of the slide column 221d is positioned below the second actuator 257 of the second switch section 252. To position. As a result, the second actuator 257 interferes with the back side plate 414 of the slide column 221d and cannot be arranged at the second position. As a result, the maintenance switch 256 cannot be turned ON. Therefore, maintenance operation of the elevator 1 cannot be performed in a state where the slide column 221d (second movable unit 202B) is temporarily fixed.

As shown in FIG. 13, when the slide column 221d (the second movable unit 202B) is permanently fixed by the fixing mechanism 300, the lower end of the slide column 221d is positioned higher than the second actuator 257 of the second switch section 252. located above. Thereby, the second actuator 257 can be arranged at the second position because it does not interfere with the back side plate 414 of the slide column 221d. As a result, the maintenance switch 256 can be turned ON. Therefore, when the slide column 221d (second movable unit 202B) is permanently fixed and the handrail 200 is in the extended state, the elevator 1 can be operated for maintenance.

(slide guide mechanism)
Next, the slide guide mechanism 320 of the first movable unit 202A and the second movable unit 202B will be described with reference to FIG.
16 is an enlarged perspective view of the slide guide mechanism 320 of the handrail 200. FIG.

One slide guide mechanism 320 is provided for each set of support column and slide column. That is, the handrail 200 has six slide guide mechanisms 320 . Here, the slide guide mechanism 320 provided in the pair of the post 211d and the slide post 221d will be described as an example.

As shown in FIG. 16, the slide guide mechanism 320 is composed of a slit 331 provided in the post 211d and an engaging pin 332 attached to the slide post 221d. The slit 331 is formed in the right side plate 402 of the support 211d. The slit 331 extends in the Z-axis direction.

The engagement pin 332 is fixed to the right side plate 412 of the slide column 221d. The engagement pin 332 is movably engaged with the slit 331 . The engaging pin 332 has a shaft portion penetrating the slit 331 of the support 211d and a head arranged outside the support 211d. The head of the engaging pin 332 is shaped like a disc with a diameter longer than the length of the slit 331 in the width direction.

The engagement pin 332 engages with the lower end of the slit 331 when the handrail 200 is contracted. As a result, when the handrail 200 is contracted, the slide column 221d is prevented from moving downward in the Z-axis direction. Moreover, the engaging pin 332 engages with the upper end of the slit 331 in the extended state of the handrail 200 . Thus, in the extended state of the handrail 200, the slide column 221d is prevented from moving upward in the Z-axis direction.

By providing the slide guide mechanism 320 described above, rattling of the slide columns 221a to 221f can be suppressed when moving the first movable unit 202A and the second movable unit 202B in the Z-axis direction. As a result, it is possible to smoothly move the first movable unit 202A and the second movable unit 202B in the Z-axis direction.

In addition, in this embodiment, the slit 331 is provided in the post 211d, and the engaging pin 332 is attached to the slide post 221d. However, the slide guide mechanism according to the present invention may have a configuration in which a slit is provided in the slide column and an engagement pin is attached to the column.

As described above, the handrail 200 according to the present embodiment includes a plurality of posts 211a to 211f, a plurality of slide posts 221a to 221f, a side rail portion 222, a back rail portion 223 (rail portion), and a first switch portion. 251 and a second switch unit 252 . A plurality of struts 211 a to 211 f are fixed to the top of the car 120 . The plurality of slide columns 221a-221f are slidably engaged with the columns 211a-211f, respectively, and can protrude above the tops of the columns 211a-211f. The side rail portion 222 and the inner rail portion 223 are fixed to a plurality of slide columns 221a-221f. The first switch portion 251 and the second switch portion 252 cannot be turned on by interfering with one of the plurality of slide columns 221a to 221f (slide column for switch) 221d. In the expanded state in which the plurality of slide columns 221a to 221f extend from the top of the plurality of columns 211a to 211f, the first switch section 251 interferes with the slide column 221d, which is one of the plurality of slide columns 221a to 221f. , the second switch portion 252 is prevented from interfering with the slide column 221d. This allows the handrail 200 to be easily assembled in the extended state. As a result, the handrail 200 can be easily assembled above the car 120 . Furthermore, the extended state of the handrail 200 can be easily detected.

Further, when the plurality of slide columns 221a to 221f collapse into the plurality of columns 211a to 211f, the first switch section 251 avoids interference with the slide column 221d (switch slide column), and the second switch unit 251 The portion 252 interferes with the slide column 221d. This makes it possible to easily detect the retracted state of the handrail 200 .

Also, the first switch section 251 is arranged above the second switch section 252, and the slide column 221d (slide column for switch) has a notch 288 to avoid interference with the first switch section 251 in the contracted state. As a result, a structure in which the slide column 221d in the contracted state does not interfere with the first switch section 251 can be easily realized.

The first switch section 251 also has a normal switch 254 and a first actuator 255 that moves in a direction orthogonal to the vertical direction to press the normal switch 254 . The first operating element 255 has an inclined surface 255b that contacts the slide column 221d (switch slide column) rising from the contracted state. Accordingly, by raising the slide column 221d, the first operating element 255 can be moved to a position where it does not interfere with the slide column 221d. Further, the normal switch 254 can be pressed by raising the slide column 221d.

In addition, the lower end of the slide column 221d (switch slide column) is located above the second switch portion 252 in the extended state. As a result, a structure in which the slide column 221d in the expanded state does not interfere with the second switch section 252 can be easily realized.

Also, the second switch section 252 has a maintenance switch 256 and a second operator 257 that moves in a direction perpendicular to the vertical direction to press the maintenance switch 256 . The second operator 257 has an inclined surface 257b that contacts the lower end of the slide column 221d (switch slide column) that descends from the extended state. Accordingly, by raising the slide column 221d, the second operating element 257 can be moved to a position where it does not interfere with the slide column 221d. Also, the maintenance switch 256 can be pressed by lowering the slide column 221d.

It also has a temporary fixation mechanism 270B that supports at least one (slide post 221e) of the plurality of slide posts 221a to 221f raised from the contracted state to the temporarily fixed position. The vertical positions of the plurality of slide columns 221a to 221f in the extended state are set higher than the vertical positions of the plurality of slide columns 221a to 221f arranged at the temporarily fixed positions. As a result, the second switch portion 252 is not prevented from interfering with the slide column 221d at the temporarily fixed position. As a result, when the plurality of slide columns 221a to 221f are in the temporarily fixed position, the expanded state can be prevented from being detected. Therefore, maintenance operation of the elevator 1 can be prevented while the plurality of slide columns 221a to 221f are temporarily fixed.

The temporary fixing mechanism 270B also has a stopper 281 rotatably connected to at least one of the plurality of struts 211a to 211f (the strut 211e). The stopper 281 supports the lower end of at least one of the plurality of slide columns (column 211e). Thereby, the plurality of slide columns 221a to 221f can be temporarily fixed with a simple structure.

Also, the stopper 281 is stabilized in a posture of supporting at least one of the plurality of slide columns 221a to 221f (column 211e) by its own weight. As a result, the plurality of slide columns 221a to 221f are lifted and moved above the stopper 281, so that the stopper 281 can be easily placed in a posture for supporting the slide column 221e. As a result, it is possible to easily temporarily fix the plurality of slide columns 221a to 221f.

Also, at least one of the plurality of struts 211a to 211f has a slit 331 extending in the Z-axis direction (vertical direction). A slide column that engages with at least one of the plurality of posts 211 a to 211 f has an engagement pin 332 that engages with the slit 331 . As a result, rattling of the slide columns 221a to 221f can be suppressed. As a result, the slide columns 221a to 221f can be smoothly moved in the Z-axis direction.

Further, the elevator 1 according to the present embodiment includes a car 120 that moves up and down in the hoistway 110, a control board 170 (control unit) that controls the up and down operation of the car 120, and a and the handrail 200 described above. Thereby, when maintenance and inspection of the elevator 1 are performed, the assembly work of the handrail 200 can be easily performed above the car 120 .

Also, the control board 170 (control section) permits normal operation when the first switch section 251 is ON and the second switch section 252 is OFF. Also, when the first switch unit 251 is OFF and the second switch unit 252 is ON, maintenance operation, which is operation for performing maintenance/inspection work, is permitted. Thereby, when it is detected that the handrail 200 is in the retracted state, the normal operation of the elevator 1 can be performed. Further, maintenance operation of the elevator 1 can be performed when it is detected that the handrail 200 is in the extended state.

Also, the control board 170 (control section) detects that an abnormality has occurred in the handrail 200 when the first switch section 251 and the second switch section 252 are ON. Accordingly, when a malfunction occurs in the first switch portion 251 or the second switch portion 252, the malfunction can be detected, and the operation of the elevator 1 can be stopped. As a result, the elevator 1 can be operated safely.

The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications are possible without departing from the gist of the invention described in the claims.

In the above-described embodiment, the first movable unit 202A and the second movable unit 202B are provided. However, the handrail according to the present invention may have a configuration in which the first movable unit 202A and the second movable unit 202B are integrally joined. In this embodiment, since the movable units are divided into the first movable unit 202A and the second movable unit 202B, when the handrail 200 is to be contracted or expanded, the

movable units

202A and 202B can be easily moved by one worker. can be lifted to

For example, assume that the first movable unit 202A and the second movable unit 202B are integrally joined, and the length of the handrail 200 in the Y-axis direction is longer than the length of the worker's arms spread out. In this case, the side rail portion 222 (see FIG. 2) or the side rail portion 224 is gripped to lift the entire movable unit. As a result, it is difficult to lift the entire movable unit in the Z-axis direction with good balance. In addition, when the first movable unit 202A and the second movable unit 202B are integrally joined, the weight may exceed the weight that can be lifted by one worker, and the workability of the assembly work is deteriorated. .

Further, in the above-described embodiment, the first actuator 255 and the second actuator 257 are manually moved to the second position (the position where the push button switch is turned ON). However, the switch section according to the present invention may include an urging member that urges the

actuators

255 and 257 toward the second position. In this case, when the handrail 200 is in the retracted state, the first actuator 255 is automatically placed in the second position and the normal switch 254 is turned ON. Also, when the handrail 200 is in the extended state, the second actuator 257 is automatically placed in the second position and the maintenance switch 256 is turned ON. As the biasing member that biases the

actuators

255 and 257, for example, a tension coil spring can be employed.

Also, in the above-described embodiment, the stopper 281 is stabilized in a posture that supports the slide column 221e by its own weight. However, the temporary fixing mechanism according to the present invention may include an urging member that urges the stopper 281 so that it assumes a posture that supports the slide column 221e. A torsion coil spring, for example, can be used as the biasing member that biases the stopper 281 .

In addition, in the above-described embodiment, one fixing mechanism 300 is provided for each set of support column and slide column. However, the number of fixing mechanisms according to the present invention can be appropriately set as long as the first movable unit 202A and the second movable unit 202B can be fixed in the contracted state and expanded state of the handrail 200. FIG. Also, the number of temporary fixing mechanisms according to the present invention can be appropriately set.

In addition, in the above-described embodiment, one slide guide mechanism 320 is provided for each set of support column and slide column. However, at least one slide guide mechanism according to the present invention may be provided in each of the first movable unit 202A and the second movable unit 202B.

In this specification, words such as "parallel" and "perpendicular" are used, but these do not strictly mean only "parallel" and "perpendicular", but include "parallel" and "perpendicular". Furthermore, it may be in a "substantially parallel" or "substantially orthogonal" state within the range where the function can be exhibited.

1... elevator, 100... hoisting machine, 110... hoistway, 120... car, 130... rope, 140... counterweight, 150... warp wheel, 160... machine room, 170... control board, 200... handrail, 201... support unit, 202A... first movable unit, 202B... second movable unit, 211a-211f... strut, 219... switch base, 220... hook base, 221a-221f... slide column, 222, 224... side rail section, 223, 225... Back

rail portion

240A, 240B... Switch unit 251... First switch part 252... Second switch part 254... Normal switch 255... First actuator 255a... End surface 255b... Inclined surface 256... maintenance switch 257... second actuator 257a... end surface 257b... inclined

surface

270A, 270B... temporary fixing mechanism 281... stopper 282... shaft portion 285... base portion 286... hook portion 300... Fixing mechanism 301 Bolt 302 Weld nut 303 Fitting part 303a Bolt fitting hole 320 Slide guide mechanism 331 Slit 332 Engaging pin

Claims

a plurality of struts fixed to the top of the car;
a plurality of slide pillars slidably engaged with the plurality of pillars and capable of protruding upward from upper portions of the plurality of pillars;
a rail portion fixed to the plurality of slide columns;
a first switch unit and a second switch unit that cannot be turned on by interfering with a switch slide column that is one of the plurality of slide columns;
In an extended state in which the plurality of slide columns extend from the upper portions of the plurality of columns, the first switch section interferes with the switch slide column, and the second switch section interferes with the switch slide column. Handrails are avoided.
In a contracted state in which the plurality of slide columns collapse into the plurality of columns, the first switch section is prevented from interfering with the switch slide column, and the second switch section is arranged with the switch slide column. The handrail of claim 1, interfering.
The first switch section is arranged above the second switch section,
The handrail according to claim 2, wherein the switch slide column has a notch to avoid interference with the first switch section in the contracted state.
The first switch unit has a first switch and a first actuator that moves in a direction perpendicular to the vertical direction and presses the first switch,
4. The handrail according to claim 3, wherein the first actuator has an inclined surface that contacts the switch slide column that rises from the contracted state.
4. The handrail according to claim 3, wherein in the extended state, the lower end of the switch slide column is located above the second switch section.
The second switch section has a second switch and a second actuator that moves in a direction orthogonal to the vertical direction and presses the second switch,
6. The handrail according to claim 5, wherein the second operator has an inclined surface contacting the lower end of the switch slide column descending from the extended state.
a temporary fixing mechanism that supports at least one of the plurality of slide columns raised from the contracted state to the temporary fixing position;
3. The hand according to claim 2, wherein the vertical positions of the plurality of slide columns in the extended state are set higher than the vertical positions of the plurality of slide columns arranged at the temporarily fixed positions. rail.
The temporary fixing mechanism has a stopper rotatably connected to at least one of the plurality of struts,
The handrail according to claim 7, wherein the stopper supports a lower end of at least one of the plurality of slide columns.
The handrail according to claim 8, wherein the stopper is stabilized in a posture supporting at least one of the plurality of slide columns by its own weight.
at least one of the plurality of struts and one of the slide struts engaged with at least one of the plurality of struts has a slit extending in the vertical direction;
2. The handrail of claim 1, wherein at least one of said plurality of posts and the other of said slide posts engaging at least one of said plurality of posts has an engagement pin that engages said slit.
A car that ascends and descends in a hoistway, a control unit that controls the ascending and descending operation of the car;
a handrail provided at the top of the car,
The handrail is
a plurality of struts fixed to the top of the car;
a plurality of slide pillars slidably engaged with the plurality of pillars and capable of protruding upward from upper portions of the plurality of pillars;
a rail portion fixed to the plurality of slide columns;
a first switch unit and a second switch unit that cannot be turned on by interfering with a switch slide column that is one of the plurality of slide columns;
In an extended state in which the plurality of slide columns extend from the upper portions of the plurality of columns, the first switch section interferes with the switch slide column, and the second switch section interferes with the switch slide column. Elevator is avoided.
In a contracted state in which the plurality of slide columns collapse into the plurality of columns, the first switch section is prevented from interfering with the switch slide column, and the second switch section is arranged with the switch slide column. 12. The elevator of claim 11, interfering.
The control unit permits normal operation when the first switch unit is ON and the second switch unit is OFF, and the first switch unit is OFF and the second switch unit is ON. 13. The elevator according to claim 12, wherein in certain cases, maintenance operation, which is operation for performing maintenance/inspection work, is permitted.
13. The elevator according to claim 12, wherein the control unit detects that an abnormality has occurred in the handrail when the first switch unit and the second switch unit are ON.