WO2002024565A1 - Elevator system and method of inspecting the elevator system - Google Patents

Abstract

An elevator system without a machine room, comprising a hoist (3) installed at an upper part (1a) of a hoistway (1) and capable of raising and lowering a car (2) installed in the hoistway (1) through a rope (3a), and stopping means having a switch (7) and a cam (8), for stopping the car at a specified position when the hoist (3) is maintained and inspected, wherein the specified stopping position is set so that the upper surface of the roof of the car (2) is lower by a specified distance or more than the upper frame of an access at the highest-story landing (10).

Description

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2/24565

Elevator overnight system and its inspection method

Technical field

 The present invention provides a so-called machine room-less elevator that arranges a hoisting machine at the upper part of an elevator shaft and stores a control device of the elevator in the shaft, thereby eliminating the need for a machine room. In particular, it relates to an elevator system that allows the inspector to easily and safely maintain and inspect the winding machine. Background art

 Recently, in order to make effective use of the rooftop of the building, control was performed during the hoistway without installing a control room for the elevator system and a machine room to house the hoisting machine, etc., which were conventionally installed on the rooftop. A so-called machine room-less elevator as disclosed in Japanese Patent Application Laid-Open No. H08-210815 in which a device is provided and a hoisting machine is provided at the top or bottom of the hoistway. The overnight system is becoming the mainstream. (The configuration of the machine room-less elevator where the hoisting machine is located above the hoistway will be described with reference to Fig. 7. Here, Fig. 7 It is sectional drawing which shows the conventional machine room less elevator overnight system.

 In FIG. 7, a hoisting machine 3 is installed on a beam at the upper part 1a of the hoistway 1 of the hoistway 1 on which the car 2 of the elevator system moves up and down. The hoisting machine 3 is electrically connected to the control device disposed in the hoistway 1 and the operation panel disposed in the car 2 so that the control device can move the car 2 safely and comfortably. Drive control is performed by issuing commands such as acceleration / deceleration and stop.

Next, a method for maintaining and checking the hoisting machine 3 of the conventional elevator system will be described. First, the inspector 4 performs a maintenance inspection of the hoist 3 Open the door 5 on the landing side and the door 6 on the car side of the elevator 10 on the floor and enter the car 2 room. Then, an inspection operation is performed by operating a switch or the like for inspection and maintenance of the operation panel arranged in the car 2 room, and the car 2 is moved up and down to a predetermined position.

 Then, the inspector 4 uses the stepladder 1 1 to cover the entrance 2 1 provided on the ceiling of the car 2 and closes the door 2 1 provided on the ceiling of the car 2 from the entrance 2 1. You can ride on the inspection fence 2a. Here, if there is another inspector 4, the other inspector 4 raises and lowers the car 2 to a predetermined position in the car so that maintenance and inspection of the hoisting machine 3 can be performed easily. Perform maintenance and inspection of 3. At that time, if you want to go out of the hoistway 1 once for some reason, go in and out of the entrance 2 1 in the ceiling of car 2, raise and lower car 2, and move out of the hoistway 1 from the door 6 of car 2. The landing was out at 10.

 However, in the above-described elevator system, when the maintenance and inspection of the hoisting machine 3 is performed on the ceiling of the car 2, the inspector 4 requires the entrance 2 1 provided on the ceiling of the car 2. It was necessary to move between the ceiling of car 2 and the outside of hoistway 1 through car 2, and to raise and lower car 2 each time it moved. For this reason, the entrance and exit 21 must be provided in the ceiling of car 2, which is costly, and moving between the ceiling of car 2 and the outside of hoistway 1 during maintenance and inspection work is troublesome. Had become something. Disclosure of the invention

 The present invention has been made in order to solve such a problem, and when an inspector moves between the ceiling of a car and the outside of a hoistway during maintenance and inspection during an elevator at a machine room lesson. The objective is to provide an elevator system that does not require raising and lowering the car.

In addition, an entrance is provided on the ceiling of the car for maintenance and inspection. Another object of the present invention is to provide an elevator system that does not need to be operated. The elevator system according to the present invention is an elevator system having a hoisting machine at an upper part of a hoistway, wherein the hoisting machine raises and lowers a car provided in the hoistway via a rope. A stopping means that operates at the time of maintenance and inspection of the winding machine to stop the car at a predetermined position, and the predetermined position for stopping the car is from a frame above a landing entrance on a top floor than a ceiling upper surface of the car. Is also higher than a predetermined position.

 In addition, a footrest is provided on the freely openable car-side door provided at the entrance of the car.

 The footrest is housed in the car side door during normal operation of the elevator system, and forms a convex portion during maintenance and inspection of the elevator system.

 In addition, the entrance height of the landing on the top floor is set higher than the entrance height of the car by more than a predetermined value.

 Further, a shielding plate is provided above the landing entrance and between the hoistway and a landing-side door provided at the landing entrance.

 An inspection method of an elevator system according to the present invention includes a hoisting machine at an upper part of a hoistway, and a hoisting machine that raises and lowers a car provided in the hoistway via a rope by the hoisting machine. Then, the ceiling upper surface of the car is raised from the floor surface of the landing entrance on the top floor, and the ceiling upper surface of the car is stopped at a predetermined position lower than the frame above the entrance entrance on the top floor, and the winding is performed. The maintenance and inspection of the upper unit is performed. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a sectional view showing an elevator system according to the first embodiment. is there.

 FIG. 2 is a sectional view showing an elevator system according to the second embodiment.

 FIG. 3 is an explanatory diagram of an elevator system according to the second embodiment. FIG. 4 is a cross-sectional view illustrating the elevator system according to the third embodiment.

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 Fig. 5 is a diagram showing the relationship between the entrance height of the landing of the normal elevator system and the entrance height of the car.

 FIG. 6 is a sectional view showing an elevator system according to the third embodiment.

 FIG. 7 is a sectional view showing a conventional machine room-less elevator system. BEST MODE FOR CARRYING OUT THE INVENTION

 Next, examples of the present invention will be described as follows.

Embodiment 1

 One embodiment of an elevator system according to the present invention will be described with reference to FIG. Here, FIG. 1 is a sectional view showing an elevator system according to Embodiment 1 of the present invention.

In FIG. 1, a car 2 moves up and down the hoistway 1 constituting the elevator system, and a fence 2 a is provided on the ceiling of the car 2. Moreover, the car 2, when _c normal operation for performing lifting of the car 2 is raised Certificates in卷上machine 3 fastening rope 3 a ceiling, and is openably installed on the landing doorway to elevator Isseki By opening and closing the door 5 on the landing side and the door 6 on the openable car side provided at the entrance of the car 2, passengers enter and exit between the elevator 10 and the car 2 all night. Reference numeral 7 denotes a switch provided at the hoistway 1 for stopping the car 2 at a fixed position, and reference numeral 8 denotes a switch provided at the outer side of the car 2 and contacts the switch 7 at the fixed position to turn on the switch 7. 9 is a control panel for maintenance and inspection work, etc., installed at the elevator hall 10 for elevators and 11 is an elevator hall 10 for elevators and the upper part of the hoistway 1 a during maintenance and inspection work This is a stepladder used to get in and out. Here, the hoisting machine 3 is installed on the beam of the upper shaft 1a of the hoistway, and electrically connected to the control device arranged in the hoistway 1 and the operation panel 9 arranged in the elevator hall 10. It is connected. Then, the control device issues commands such as acceleration / deceleration / stop to perform drive control in order to move the car 2 safely and comfortably. The cam 8 provided on the side of the car 2 is housed in the car 2 so that it does not come into contact with the switch 7 during normal operation of the elevator system. A convex portion is formed on the switch and comes into contact with the switch 7. That is, the switch 7 and the cam 8 constitute a stopping means at the time of maintenance / inspection operation.

Further, the stop position of the car 2 which is stopped by the switch 7 and the cam 8 stopping means is a position where the inspector 4 on the ceiling of the car 2 can easily perform maintenance and inspection of the hoisting machine 3 and the inspector 4 It is set so that there is a gap A (A shown in Fig. 1) through which the car 2 can enter and exit from the ceiling of the car 2 and the outside of the hoistway 1. This gap A is the distance between the upper surface of the ceiling of the car 2 and the frame (Kazusa) above the frame that constitutes the entrance of the elevator 10 on the top floor. Due to the correlation position, the upper surface of the ceiling of the car 2 stops at a predetermined position lower than the upper frame of the entrance and exit of the elevator 10. At the time of maintenance and inspection of the hoisting machine 3, the stopping means is set so that the car 2 does not rise above the stop position, so that the inspector between the upper shaft 1a of the hoistway and the upper surface of the ceiling of the car 2 The safety at the time of maintenance inspection of 4 can be ensured. Next, a method of maintaining and checking the hoisting machine 3 of the elevator system according to the present invention will be described. Inspector 4 operates the buttons on the operation panel 9 installed at the elevator floor 10 on the top floor of the building to operate the elevator system from normal operation to maintenance and inspection. Switch to In the present embodiment, there are two types of operation of the elevator-evening system: a normal operation in which a passenger is driven, and a maintenance / inspection operation in which the hoisting machine is operated for inspection. It shall be set to be switchable. The maintenance and inspection performed by a plurality of inspectors 4 will be described.

At the same time that the operation is switched to the maintenance / inspection operation, the cam 8 housed on the outer side surface of the car 2 during normal operation protrudes to the outside of the car 2 side surface. At this time, the positional relationship between the cam 8 of the car 2 and the switch 7 needs to be such that the cam 8 is at a lower position than the switch 7. In other words, maintenance and at the time of switching to the inspection of the OPERATION, the car 2 and _c will be located downstairs than the top floor, ceiling upper surface of the car 2 is lowered to car 2 by operating the operation panel 9 The inspection staff 4 can get on the fence 2 a provided on the upper surface of the ceiling of the car 2 so that the floor and the floor of the top floor of the landing are made to coincide with each other. Then, when the other inspector 4 operates the operation panel 9 and raises the car 2 on which the inspector 4 is put, the cam 8 contacts the switch 7 and the switch 7 is turned on, and the car 2 The stop position _c to stop at the position is a position set in advance for maintenance and inspection of the winding machine 3, so that the inspector 4 does not need to make fine adjustments.

In a state where the car 2 is stopped at the predetermined position, the inspector 4 performs maintenance work of the hoisting machine 3. In that case, if for some reason you want to go out of the hoistway 1 once or if other inspectors 4 also participate in the work, the elevator 2 and the ceiling of the car 2 will be lifted without raising and lowering the car 2. Can be freely entered and exited from the gap A connecting the steps using the stepladder 1 1. When the maintenance work is completed, the inspector 4 will be installed at the elevator 10 on the top floor of the building. If the operation is switched to the normal operation by operating a button or the like of the placed operation panel 9, the arm 8 is stored in the car 2 again.

 Therefore, even in the event of an abnormal situation such as an earthquake during the maintenance and inspection of the hoisting machine 3, the inspector 4 can quickly slam to the elevator 10 outside the hoistway 1 for maintenance work. It is possible to easily move between the inside car 2 ceiling and the outside of the hoistway 1 (elevation platform 10), thereby improving the safety of maintenance work.

 In addition, it is not necessary to raise and lower the car 2 when the car 2 moves between the ceiling of the car 2 and the outside of the hoistway 1 (elevation platform 10) while the inspector 4 is working, thus improving the efficiency of maintenance and inspection work. Can be done.

 Further, in this embodiment, the stopping means is constituted by mechanical means of the switch 7 and the cam 8, but a maintenance and inspection program is incorporated in advance in the control device of the elevator system to stop at a predetermined position. It may be something.

Embodiment 2

 This embodiment has the same basic structure as that of the first embodiment, and therefore the differences will be mainly described. Other points are the same as in the first embodiment.

 Embodiment 2 of the elevator system according to the present invention will be described with reference to FIG. Here, FIG. 2 is a cross-sectional view showing an elevator system according to Embodiment 2 of the present invention. Except for the configuration of the footrest portion 12, the other points are the same as those described in Embodiment 1. It is the same as FIG. Therefore, the same or corresponding portions as those in Embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 2, reference numeral 12 denotes a footrest provided substantially at the center of the door 6 on the car side. The footrests 1 and 2 are housed flush with the door 6 during normal operation of the elevator system, but can be pulled out during maintenance and inspection operations. When entering / leaving platform 10 Is used as a footrest portion 12 on which an inspector 4 places a foot. FIG. 3 shows the footrest section 12 when the elevator system described in FIG. 2 is viewed from the elevator platform 10. As shown in Fig. 3, when the car-side door 6 is double-opened, the footrests 12 are provided on both the double-opened car-side doors 6 and pulled out during maintenance and inspection operations. Inspector 4 can use this as a stepping stone and can climb to the upper surface of the ceiling of car 2.

 In other words, even if the inspector 4 moves from the gap A connecting the elevator 10 and the ceiling of the car 2 during the maintenance work on the hoisting machine 3, the stepladder 11 is prepared. If you pull out the footrests 1 and 2 without having to do it, you can freely enter and exit by putting your feet there.

 Therefore, it is easier to move between the car 2 ceiling and the outside of the hoistway 1 (elevation platform 10) during the maintenance and inspection work, and carry the stepladder 11 one by one during the maintenance and inspection work No need.

 In the present embodiment, as shown in FIG. 3, the door 6 is provided on both sides of the door 6 on the side of the car that opens, but the footrest 12 is not limited to this. It is only necessary to use one that can be used as a stepping platform and that can climb to the upper surface of the ceiling of the car 2. Embodiment 3.

 This embodiment has the same basic structure as that of the first embodiment, and therefore the differences will be mainly described. Other points are the same as in the first embodiment.

A third embodiment of the elevator system according to the present invention will be described with reference to FIG. Here, FIG. 4 is a cross-sectional view showing the elevator system according to Embodiment 3 of the present invention.Although the height of the entrance to the car 2 of the elevator platform 10 is different, Other points are the same as in FIG. 1 described in Embodiment 1. It is like. Therefore, the same or corresponding portions as in Embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.

 In Fig. 4, the entrance height D of the elevator 10 on the top floor of the building is different from the entrance height D of the car 2 and the entrance height D of the elevator 10 on the elevator is different. Is higher than the entrance height C of car 2. Here, for comparison with the normal elevator system, the relationship between the entrance height of the landing and the car entrance height of the normal elevator system will be described with reference to FIG. FIG. 5 is a diagram showing the relationship between the entrance height of the landing of the normal elevator system and the entrance height of the car. As shown in FIG. 5, the entrance height B of the elevator 10 and the entrance height C of the car 2 are designed to be substantially the same. That is, when the door 5 on the landing side of the elevator 10 is opened, the structure of the cage 2 installed above the ceiling of the cage 2 is hidden to improve the appearance of the elevator system. That's why.

 Even in the elevator system of the present embodiment shown in FIG. 4, in order to prevent the appearance from being impaired, the structure above the ceiling of the car 2 is covered by the shielding plate 13 during normal operation. Is kept. This shielding plate 13 is detachably installed on the upper frame of the landing entrance between the landing door 5 and the hoistway 1.

Next, a method of maintaining and checking the hoisting machine 3 of the elevator system according to the present invention will be described. The inspector 4 operates the operation panel 9 provided on the top floor of the building, and switches the operation of the elevator system from normal operation to operation for maintenance and inspection. The door 5 on the landing side of is opened. Then, the inspector 4 temporarily removes the shielding plate 13 for inspection. At the time of this operation switching, the cam 8 housed on the outer side surface of the car 2 during the normal operation protrudes to the outside of the car 2 side surface. Next, the car 2 is lowered by operating the operation panel 9 so that the upper surface of the ceiling of the car 2 and the floor of the uppermost floor of the landing are flush with each other. The inspector 4 can ride on the fence 2 a provided on the ceiling of the car 2. Then, when the other inspector 4 operates the operation panel 9 and raises the car 2 on which the inspector 4 is put, the cam 8 contacts the switch 7 to turn on the switch 7 and the car 2 Stop in position.

 Next, the entrance and exit of the inspector 4 between the elevator 10 and the ceiling of the car 2 during maintenance and inspection of the hoist 3 will be described with reference to FIG. FIG. 6 is a cross-sectional view showing a gap between the upper frame of the landing entrance and the ceiling of the car 2. When the car 2 is stopped at the predetermined stop position, a gap A ′ between the elevator 10 and the ceiling of the car 2 is formed. The gap A 'is the distance from the top of the ceiling of the car 2 to the top floor of the elevator at the entrance to the elevator at the top of the elevator, and the height of the entrance at the entrance to the elevator at the elevator is enforced. Since the height is set higher than that of the first embodiment, it is possible to have more room for the gap A ′.

 Also, by changing the height of the entrance and exit of the elevator 10 on the top floor based on the position of the hoisting machine 3, from the top of the ceiling of the car 2 above the entrance of the elevator and elevator 10 on the top floor The distance to the frame can be freely adjusted. Therefore, it is possible to easily and easily carry the car 2 between the ceiling and the outside of the hoistway 1 (the landing 10) during the maintenance and inspection work, to improve the safety of the maintenance and inspection work and to perform the maintenance and inspection. Work efficiency can also be improved.

 If a further difference can be made between the entrance height D of the elevator 10 on the top floor of the building and the entrance height C of car 2, car 2 can be moved to the top floor as in normal operation. It is possible to shift to the inspection and maintenance work simply by removing the shield plate 13 while the operation is stopped. Industrial applicability

As described above, the elevator system according to the present invention has a hoist above a hoistway, and is provided in the hoistway via a rope by the hoist. The present invention is applied to an elevator system without a machine room for raising and lowering a car, wherein the elevator system is provided with a stopping means that operates during maintenance and inspection of the hoist and stops the car at a predetermined position. You.

Claims

The scope of the claims  1. A hoisting machine having a hoisting machine at the upper part of a hoistway, and a hoisting machine for raising and lowering a car provided in the hoistway through a rope by using the hoisting machine. Stopping means that operates during inspection to stop the car at a predetermined position is provided, wherein the predetermined position is such that the upper surface of the ceiling of the car is a position lower than a frame above a landing entrance on the top floor by a predetermined amount or more. Elevator featured overnight system.  2. The elevator system according to claim 1, wherein a footrest is provided on a freely openable car side door provided at an entrance of the car.  3. The elevator according to claim 2, wherein the footrest is housed in the car side door during normal operation of the elevator system, and forms a convex portion during maintenance and inspection of the elevator system. Elevator overnight system.  4. The elevator system according to claim 1, wherein the entrance height of the landing on the top floor is set higher than the entrance height of the car by a predetermined amount or more.  5. The elevator according to claim 4, wherein a shielding plate is provided above the landing entrance and between the hoistway and the landing-side door provided at the landing entrance. system.  6. A hoisting machine that has a hoisting machine at the upper part of the hoistway, and the hoisting machine raises and lowers the car in the hoistway through a rope by using a rope. The elevator is raised from the floor of the landing entrance, and the upper surface of the car is stopped at a predetermined position lower than the frame above the entrance on the top floor, and maintenance and inspection of the hoist is performed. Inspection method of elevator system characterized by the following.