Elevator waiting landing door and elevator

Abstract

The invention provides an elevator landing door capable of improving the safety of the lifting action of an operator performing operation in a pit, and an elevator provided with the elevator landing door. The elevator hall door (211) is provided with: door bodies (211A, 211B) which slide in the horizontal direction to open and close an entrance communicated with the lifting channel; and lifting auxiliary parts (216A, 216B) which are configured on the surfaces of the door main bodies (211A, 211B) on the side of the lifting channel. The lifting auxiliary parts (216A, 216B) are provided with: a plurality of cross beams (241) arranged in the vertical direction; and a handrail (242) which extends in the vertical direction and is fixed to the plurality of cross beams (241). The handrails (242) are fixed at positions spaced apart from the ends of the plurality of cross beams (241) in the horizontal direction.

Description

Technical Field

[0001] The invention relates to an elevator hall door and an elevator. Background Art

[0002] When performing maintenance and inspection work on an elevator, a maintenance worker sometimes descends from the elevator lobby on the lowest floor into the pit. In this case, the maintenance worker uses a pit lifting ladder. As a pit lifting ladder, for example, Patent Document 1 discloses.

[0003] The pit lifting ladder disclosed in Patent Document 1 comprises a ladder portion, a handle portion, and a door fixing unit. The handle portion is fixed to the inner surface of the lifting passage of the elevator hall door. The handle portion moves together with the elevator hall door. The ladder portion is fixed to the side surface in the pit. The ladder portion is located below the handle portion when the elevator hall door is in an open state. The door fixing unit fixes the elevator hall door in an open state.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2014-051348

[0007] However, the height of the position where the hand grips the handle of the pit lifting ladder disclosed in Patent Document 1 is limited to the height of the horizontal bar. Therefore, when the operator of the pit lifting ladder disclosed in Patent Document 1 replaces the horizontal bar, the posture of the operator may become unstable. Summary of the invention

[0008] Problems to be solved by the invention

[0009] An object of the present invention is to provide a hall door capable of improving the safety of the lifting and lowering operation of workers working in a pit, and an elevator including the hall door in consideration of the above-mentioned problems.

[0010] Means for solving problems

[0011] In order to solve the above problems and achieve the purpose of the present invention, an elevator hall door reflecting one aspect of the present invention includes: a door body that slides in the horizontal direction to open and close an entrance and exit connected to a lifting passage; and a lifting auxiliary part that is arranged on the surface of the door body on the lifting passage side. The lifting auxiliary part includes: a plurality of beams that are arranged in the vertical direction; and a handrail that extends in the vertical direction and is fixed to the plurality of beams. The handrail is fixed at a position spaced apart from the ends of the plurality of beams in the horizontal direction.

[0012] An elevator reflecting one aspect of the present invention includes: an elevator car that performs an ascending and descending motion in an ascending and descending passage; and the above-mentioned hall door that opens and closes an entrance and an exit communicating with the ascending and descending passage.

[0013] Effects of the Invention

[0014] According to the hall door having the above-described structure, the safety of the lifting and lowering actions of the workers working in the pit can be improved.

[0015] It should be noted that other problems, structures, and effects than those described above will become apparent from the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall structural diagram of an elevator according to one embodiment of the present invention.

[0017] Figure 2 This is a side view showing a state in which an elevator car of the elevator according to one embodiment of the present invention is stopped at an arbitrary floor.

[0018] Figure 3 This is a diagram showing a state in which a hall door according to an embodiment of the present invention is located at the lowest floor, as viewed from the elevator passage side.

[0019] Figure 4 It is along Figure 3 A cross-sectional view along line AA is shown.

[0020] Description of reference numerals:

[0021] 1… elevator, 10… car room, 11… car door, 11A, 11B… car door body, 12… car side door unit, 13… car side door sill, 15… car side door guide rail, 21A, 21B… door hanger, 24… moving roller, 30… car side locking mechanism, 100… winch, 101… elevator lobby, 102… entrance and exit, 110… lifting channel, 130… main sling, 150… diverting pulley, 160… machine room, 211… elevator lobby door, 211A, 211B… elevator lobby door body, 212… elevator lobby side door unit, 213 …sill on the elevator lobby side, 215…door guide rail on the elevator lobby side, 216A, 216B…lifting auxiliary part, 221A, 221B…door hanger, 224…moving roller, 230…locking mechanism on the elevator lobby side, 231…door panel, 232…longitudinal reinforcement member, 232A…joining piece, 232B…rising piece, 232C…opposing piece, 235…door stop side end, 236…door frame side end, 237…lower end, 241…cross beam, 241a…first middle part, 241b…second middle part, 242…handrail, 250…ladder, 251…tread beam. DETAILED DESCRIPTION

[0022] Hereinafter, a hall door and an elevator according to an embodiment of the present invention will be described. It should be noted that in each of the drawings, the same reference numerals are given to common components.

[0023] 1. One Implementation Method

[0024] [elevator]

[0025] First, refer to Figure 1 and Figure 2 The structure of the elevator according to one embodiment of the present invention will be described.

[0026] Figure 1 This is an overall structural diagram of an elevator according to one embodiment. Figure 2 This is a side view showing a state where the elevator car stops at an arbitrary floor.

[0027] like Figure 1 As shown, the elevator 1 is installed in a lifting passage 110 formed in a building structure. The elevator 1 includes an elevator car 120 for transporting people and goods, a main hoisting rope 130, a counterweight 140, a hoisting machine 100, and an elevator hall door 211 (see Figure 2 A machine room 160 is provided at the top of the lifting passage 110 .

[0028] The hoisting machine 100 is disposed in the machine room 160. The main rope 130 is wound around the hoisting machine 100. The hoisting machine 100 is a device for winding up the main rope 130 to raise and lower the elevator car 120. A deflection pulley 150 is provided near the hoisting machine 100. The main rope 130 is laid over the deflection pulley 150.

[0029] The elevator car 120 is formed in a hollow substantially rectangular parallelepiped shape. The elevator car 120 is connected to a counterweight 140 via a main rope 130. The hoisting machine 100 lifts and lowers the elevator car 120 and the counterweight 140 via the main rope 130. The driving of the hoisting machine 100 is controlled by a control unit (not shown).

[0030] like Figure 2 As shown, the elevator car 120 has a car chamber 10 and a car door 11 for people and objects to get on and off.

[0031] An opening portion opened and closed by a car door 11 is formed on one side of the car chamber 10. People and objects enter and exit the elevator car 120 through the opening portion of the car chamber 10. The car side door unit 12 is arranged at the upper end portion of the opening portion of the car chamber 10 in the vertical direction. The car side door sill 13 is arranged at the lower end portion of the opening portion of the car chamber 10 in the vertical direction.

[0032] The car door 11 is a double door and includes a pair of car door bodies 11A and 11B, a car side door unit 12 , and a car side door sill 13 .

[0033] The pair of car door bodies 11A and 11B are respectively formed into a rectangular shape that is long in the vertical direction. Sliders (not shown) are provided at the lower ends of the pair of car door bodies 11A and 11B in the vertical direction. The sliders are slidably engaged with the door sill grooves provided in the car side door sill 13. The car side door unit 12 and the car side door sill 13 support the pair of car door bodies 11A and 11B so as to be able to slide in a horizontal direction orthogonal to the vertical direction.

[0034] The car door unit 12 includes a car door rail 15, a pair of door hangers 21A, 21B, an endless belt (not shown), and a drive unit (not shown) for circulating the belt. The car door rail 15 extends along the sliding direction of the pair of car door bodies 11A, 11B.

[0035] The door hanger 21A is mounted on the upper end of the car door body 11A in the vertical direction. The door hanger 21B is mounted on the upper end of the car door body 11B in the vertical direction. A movable roller 24 is rotatably supported on each of the pair of door hangers 21A and 21B. The movable roller 24 is slidably engaged with the car side door guide rail 15.

[0036] The pair of door hangers 21A and 21B are connected to a transmission belt. When the driving unit circulates the transmission belt, the pair of car door bodies 11A and 11B move toward the door opening direction approaching each other or move away from each other in the door closing direction via the pair of door hangers 21A and 21B.

[0037] The car door body 11A has a car side locking mechanism 30. The car side locking mechanism 30 locks the movement of the car door body 11A in the door opening direction. The car side locking mechanism 30 keeps the pair of car door bodies 11A and 11B in a closed state. In addition, the car side locking mechanism 30 engages with the elevator hall side locking mechanism 230 of the elevator hall door 211 described later.

[0038] The building structure has a lobby 101 at each floor where the elevator car 120 stops. The lobby 101 is provided with an entrance 102 connected to the elevator passage 110. People and objects enter and exit the elevator car 120 through the entrance 102. The entrance 102 is provided with a lobby door 211. The lobby door 211 opens and closes the entrance 102.

[0039] The hall door 211 includes a pair of hall door bodies 211A and 211B, a hall side door unit 212, and a hall side door sill 213. The hall side door unit 212 is disposed at the upper end portion of the entrance 102 in the vertical direction. The hall side door sill 213 is disposed at the lower end portion of the entrance 102 in the vertical direction. The hall side door unit 212 and the hall side door sill 213 support the pair of hall door bodies 211A and 211B so as to be able to slide in the horizontal direction.

[0040] The elevator hall door 211 is a double door. The pair of elevator hall door bodies 211A and 211B of the elevator hall door 211 are respectively formed into a rectangular shape that is long in the vertical direction. Sliders (not shown) are provided at the lower ends of the pair of elevator hall door bodies 211A and 211B in the vertical direction. The sliders are slidably engaged with the threshold grooves provided on the elevator hall side threshold 213. The pair of elevator hall door bodies 211A and 211B are movably supported by the elevator hall side door unit 212 and the elevator hall side threshold 213.

[0041] The hall door unit 212 includes a hall door rail 215, a pair of door hangers 221A, 221B, a hall lock mechanism 230, and an endless belt (not shown). The hall door rail 215 extends along the sliding direction of the pair of hall door bodies 211A, 211B.

[0042] The door hanger 221A is mounted on the upper end of the elevator hall door body 211A in the vertical direction. The door hanger 221B is mounted on the upper end of the elevator hall door body 211B in the vertical direction. The pair of door hangers 221A and 221B each support a movable roller 224 in a rotatable manner. The movable roller 224 is slidably engaged with the elevator hall side door guide rail 215.

[0043] The pair of hall door bodies 211A and 211B are connected to a transmission belt. When the transmission belt circulates, the pair of hall door bodies 211A and 211B move toward the door opening direction approaching each other or the door closing direction separating each other via a pair of door hangers 221A and 221B.

[0044] The hall-side locking mechanism 230 is provided on the door hanger 221A. The hall-side locking mechanism 230 locks the movement of the pair of hall door bodies 211A and 211B in the door opening direction. The hall-side locking mechanism 230 keeps the pair of hall door bodies 211A and 211B in a closed state.

[0045] When the elevator car 120 stops at any floor, the car side locking mechanism 30 engages with the lobby side locking mechanism 230. Then, the driving unit (not shown) of the car side door unit 12 is driven, and the pair of car door bodies 11A and 11B move in the door opening direction away from each other. At this time, with respect to the car side locking mechanism 30, the lobby side locking mechanism 230 unlocks the car side locking mechanism 30.

[0046] When the car door body 11A moves further in the door opening direction, the car side locking mechanism 30 unlocks the elevator hall side locking mechanism 230. As a result, the pair of elevator hall door bodies 211A, 211B move in the door opening direction together with the pair of car door bodies 11A, 11B. Then, the door opening action of the pair of car door bodies 11A, 11B and the pair of elevator hall door bodies 211A, 211B is completed.

[0047] [Structure of elevator lobby door]

[0048] Next, refer to Figure 3 and Figure 4 The structure of the hall door 211 will be described.

[0049] Figure 3 This is a diagram showing a state in which the hall door 211 is located at the lowest floor, as viewed from the elevator passage 110 side. Figure 4 It is along Figure 3 A cross-sectional view along line AA is shown.

[0050] like Figure 3 As shown, the hall door 211 includes a pair of hall door bodies 211A and 211B, and lift assisting portions 216A and 216B respectively mounted on the pair of hall door bodies 211A and 211B.

[0051] The pair of hall door bodies 211A and 211B are formed symmetrically. Hereinafter, the door opening direction of the pair of hall door bodies 211A and 211B is referred to as the door frame side, and the door closing direction of the pair of hall door bodies 211A and 211B is referred to as the door stop side. The pair of hall door bodies 211A and 211B have a door panel 231 and a longitudinal reinforcement member 232.

[0052] The door panel 231 is formed in a vertically long rectangular shape and has a door stopper side end 235, a door frame side end 236, a lower end 237, and an upper end (not shown).

[0053] The door stopper side end 235, the door frame side end 236, the lower end 237 and the upper end are bent into a substantially C-shape. When the hall door 211 is closed, the door stopper side end 235 of the hall door body 211A abuts against the door stopper side end 235 of the hall door body 211B.

[0054] The longitudinal reinforcement 232 is disposed between the door stop side end 235 and the door frame side end 236 of the door panel 231. The longitudinal reinforcement 232 is fixed to the plane of the lift channel side of the door panel 231 by screws or welding. The longitudinal reinforcement 232 is formed into a long strip shape that is long in the vertical direction by bending a metal plate.

[0055] The longitudinal reinforcement 232 has a joining piece 232A, a pair of rising pieces 232B, and a pair of facing pieces 232C. The joining piece 232A is formed into a rectangular plate body that is long in the vertical direction. One plane of the joining piece 232A is joined to a plane of the door panel 231 on the liftway side.

[0056] A pair of raised pieces 232B protrude approximately perpendicularly from the long sides of the engaging piece 232A. The pair of raised pieces 232B are formed into a rectangular plate body that is long in the vertical direction. The plane of the pair of raised pieces 232B is approximately perpendicular to the sliding direction of the elevator hall door 211. A pair of opposing pieces 232C protrude approximately perpendicularly from the pair of raised pieces 232B. The pair of opposing pieces 232C are formed into a rectangular plate body that is long in the vertical direction. One plane of the pair of opposing pieces 232C is opposite to the plane of the lifting channel side of the door panel 231.

[0057] The lifting auxiliary parts 216A and 216B have a plurality of beams 241 and handrails 242. The plurality of beams 241 are arranged at predetermined intervals in the vertical direction. The plurality of beams 241 are composed of a plate body that is long in the direction in which the elevator hall door 211 slides. One end of the plurality of beams 241 in the longitudinal direction is fixed to the door stop side end 235 of the door panel 231 by screws or welding. The other end of the plurality of beams 241 in the longitudinal direction is fixed to the opposing piece 232C of the longitudinal reinforcement 232 by screws or welding.

[0058] The handrail 242 is composed of a rectangular plate body that is long in the vertical direction. The middle portion of the handrail 242 in the vertical direction is fixed to the plurality of beams 241 by screws or welding. That is, the handrail 242 is fixed to a position horizontally spaced from the ends of the plurality of beams 241. The lower end portion of the handrail 242 in the vertical direction is fixed to the lower end portion 237 of the door panel 231 by screws or welding.

[0059] The operator opens a pair of hall door bodies 211A and 211B to enter and exit the pit of the lifting passage 110. A ladder 250 is fixed to the side of the pit of the lifting passage 110. Figure 3 As shown, the ladder 250 has a plurality of step beams 251 arranged in the vertical direction. The position of the fixed ladder 250 is appropriately determined according to the size of the hoistway 110 and the type of the elevator.

[0060] When entering or exiting the pit, the operator ascends or descends on the plurality of step beams 251 of the ladder 250 while holding the handrail 242. When entering or exiting the pit, the operator hooks the safety belt hook held by the operator on one of the plurality of cross beams 241 and ascends or descends on the ladder 250. The safety belt hook corresponds to the prescribed hook of the present invention.

[0061] The four corners of the handrail 242 are rounded. This allows the operator to easily grip the handrail 242 without damaging the hand gripping the handrail 242. It should be noted that, instead of rounding the corners of the handrail 242, a cushioning material or a rubber material may be wound around the handrail 242.

[0062] In the sliding direction of the hall door 211, the distance between the handrail 242 and the door stop side end 235 of the door panel 231 is greater than the distance between the handrail 242 and the longitudinal reinforcement 232. Thus, the handrail 242 is disposed at the end of the opening side of the pair of hall door bodies 211A, 211B.

[0063] The distance between the armrest 242 and the door stopper side end 235 of the door panel 231 is set to a length (eg, 25 mm) such that the operator's fingers can enter and grasp the armrest 242. That is, the armrest 242 and the door stopper side end 235 of the door panel 231 are arranged close to each other.

[0064] The portion of the plurality of cross beams 241 located between the handrail 242 and the door stopper side end portion 235 of the door panel 231 is defined as the first intermediate portion 241a. In addition, the portion of the plurality of cross beams 241 located between the handrail 242 and the longitudinal reinforcement 232 is defined as the second intermediate portion 241b. The width of the first intermediate portion 241a of the plurality of cross beams 241 is set to be wider than the width of the second intermediate portion 241b of the plurality of cross beams 241. Thus, the posture of the plurality of cross beams 241 can be uniquely determined.

[0065] The width of the first middle portion 241a is set to a length that the hook of the safety belt held by the operator cannot be hooked. On the other hand, the width of the second middle portion 241b is set to a length that the hook of the safety belt held by the operator can be hooked. Therefore, the operator hooks the safety belt hook on the second middle portions 241b of the plurality of crossbars 241.

[0066] Since the handrail 242 is disposed close to the door stop side end 235 of the door panel 231, the length of the first middle portion 241a in the direction in which the hall door 211 slides is relatively short. Therefore, if the seat belt hook is hooked on the first middle portion 241a, when the seat belt hook is pulled, the seat belt hook interferes with the longitudinal reinforcement 232 and the door stop side end 235 and is fixed in an inclined state. As a result, the seat belt hook cannot be used correctly.

[0067] In this embodiment, the width of the first middle portion 241a is set to a length that is not capable of hooking the safety belt hook. This prevents the operator from hooking the safety belt hook on the first middle portion 241a by mistake. As a result, it prevents the operator from ascending and descending on the plurality of step beams 251 of the ladder 250 when the safety belt hook cannot be used correctly. Therefore, it is possible to improve the safety of the operator when entering and exiting the pit of the lifting passage 110.

[0068] The above-mentioned predetermined intervals of the plurality of cross beams 241 are set to the same length as the intervals of the plurality of step beams 251 of the ladder 250 in the vertical direction. Thus, the operator replaces the hook of the safety belt and hooks it on the second middle portion 241b of the next cross beam each time the operator moves to the next step beam 251. As a result, the timing of the replacement hooking operation of the safety belt hook can be made uniform, and the safety of the operator when entering and exiting the pit of the hoistway 110 can be improved.

[0069] The lifting auxiliary parts 216A and 216B of such a structure have a handrail 242 extending in the vertical direction. As a result, the height position of the operator who enters and exits the pit is not limited. As a result, the safety of the lifting action of the operator working in the pit can be improved. The lower end of the handrail 242 is fixed to the lower end 237 of the door panel 231. As a result, the handrail 242 can be firmly fixed to the pair of hall door bodies 211A and 211B.

[0070] The handrail 242 is fixed to the middle part of the plurality of beams 241 on which the seat belt hook is hooked. This can improve the rigidity of the plurality of beams 241. As a result, when a force is applied to the plurality of beams 241 via the seat belt hook, deformation of the plurality of beams 241 can be suppressed.

[0071] The pair of elevator hall door bodies 211A and 211B have longitudinal reinforcements 232. Thus, the strength of the pair of elevator hall door bodies 211A and 211B can be increased. In addition, a plurality of cross beams 241 are fixed to the door stop side end 235 and the longitudinal reinforcements 232. Thus, the length of the plurality of cross beams 241 in the direction in which the elevator hall door 211 slides can be shortened. Thus, the rigidity of the plurality of cross beams 241 can be increased.

[0072] The handrail 242 is disposed at the end of the opening side of the pair of elevator hall door bodies 211A and 211B. Thus, the handrail 242 can be disposed near the workers entering and exiting the pit. In addition, by changing the opening width of the pair of elevator hall door bodies 211A and 211B, the position of the handrail 242 can be changed according to the position of the ladder 250.

[0073] One end of the longitudinal direction of the plurality of cross beams 241 is set to have the same width as the first intermediate portion 241a. Thus, the fixing amount of the plurality of cross beams 241 to the door stop side end portion 235 can be increased. As a result, the plurality of cross beams 241 can be firmly fixed to the door stop side end portion 235.

[0074] The above is a description of the embodiments of the elevator hall door and the elevator of the present invention, including their effects. However, the elevator hall door and the elevator of the present invention are not limited to the above embodiments, and various modifications can be implemented within the scope of the main purpose of the invention described in the technical solution. In addition, the above embodiments are described in detail to explain the present invention in an easy-to-understand manner, and are not necessarily limited to all the structures described.

[0075] In one embodiment described above, lifting auxiliary parts 216A and 216B are provided on the double-opening elevator hall door 211. However, the elevator hall door of the present invention may also be a single-opening structure. In one embodiment described above, the handrail 242 is formed into a rectangular plate shape. However, the handrail of the present invention is not limited to a plate shape, and may be formed into a prism shape or a round rod shape, for example. However, when the handrail is formed into a prism shape or a round rod shape, it may be fixed to the surface of a plurality of beams 241 that is opposite to the door panel 231. In this way, the handrail can be prevented from interfering with the elevator car.

Claims

1. An elevator hall door, wherein: The elevator hall door has: A door body that slides in a horizontal direction to open and close an entrance and exit communicating with the lifting passage; and a lifting auxiliary part, which is arranged on the surface of the door body on the lifting passage side, The lifting auxiliary part has: a plurality of beams arranged in an up-and-down direction; and a handrail extending in the up-down direction and fixed to the plurality of beams, The handrail is fixed to a position spaced apart from ends of the plurality of beams in the horizontal direction.

2. The elevator hall door according to claim 1, wherein: The door body has a longitudinal reinforcement member extending in the up-down direction. The plurality of cross beams are fixed to the door stopper-side end portion of the door body and the longitudinal reinforcement.

3. The elevator hall door according to claim 2, wherein: A distance in the horizontal direction between the handrail and a door stopper-side end portion of the door body is shorter than a distance in the horizontal direction between the handrail and the longitudinal reinforcement.

4. The elevator hall door according to claim 3, wherein: A first intermediate portion of the plurality of cross beams located between the handrail and the door stopper-side end portion of the door body is set to have a width greater than a second intermediate portion of the plurality of cross beams located between the handrail and the longitudinal reinforcement.

5. The elevator hall door according to claim 4, wherein: The width of the first middle portion of the plurality of beams is set to a length that cannot be hooked by a predetermined hook held by an operator. The width of the second middle portion of the plurality of beams is set to a length that can be hooked by the predetermined hook.

6. The elevator hall door according to claim 1, wherein: The armrest is arranged to be spaced apart from a doorstop-side end portion of the door body by a distance such that a finger can enter and grasp the armrest.

7. The elevator hall door according to claim 1, wherein: The lower end portion of the handrail is fixed to the lower end portion of the door body.

8. The elevator hall door according to claim 1, wherein: The plurality of cross beams are arranged at the same intervals as the tread beams of the ladder fixed to the side surface in the pit.

9. An elevator, wherein: The elevator has: an elevator car that performs a lifting motion in the lifting passage; and The elevator hall door opens and closes the entrance and exit connected to the lifting channel. The elevator hall door has: a door body that slides in a horizontal direction; and a lifting auxiliary part, which is arranged on the surface of the door body on the lifting passage side, The lifting auxiliary part has: a plurality of beams arranged in an up-and-down direction; and a handrail extending in the up-down direction and fixed to the plurality of beams, The handrail is fixed to a position spaced apart from ends of the plurality of beams in the horizontal direction.

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