JP2006036405A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a machine room-less elevator protecting a control device 5 installed in a pit 15 from submersion under water by an easily installable water-proof means with a simple structure and enhancing maintenance property. <P>SOLUTION: The elevator control device 5 installed near a hoistway pit 15 is made to an anti-submersion under water structure by covering it with a water-proof box 8, with a floating member 10 floatable on water, having an opened upper part. The water-proof box 8 is placed just below the control device 5 and is made vertically movable in a vertical direction. Thereby, it is installable at a narrow space and installation and maintenance workability at usual time are enhanced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus in which a hoisting machine and a control device are installed in a hoistway.

  Patent Document 1 discloses an elevator device provided with a weir body so that the equipment provided in the pit is not flooded when the hoistway pit is submerged.

  Further, in Patent Document 2, there is an elevator apparatus that has a bag-shaped waterproof specification member that is covered from below and protected from flooding, and a fastener is attached to the bag to ensure maintainability with respect to a control device installed in a hoistway pit. It is disclosed.

Japanese Unexamined Patent Publication No. 2000-177945 (Overall. Especially, FIGS. 4 to 7) JP 2000-272860 A (Overall)

  According to any of the above prior arts, the device can be waterproofed even if water accumulates in the pit. However, in FIGS. 4-7 of patent document 1, there exists a possibility that a flexible sheet may deteriorate or may become the obstacle of a maintenance operation | work and may be damaged. In addition, all of the other drawings shown in Patent Document 1 have a complicated configuration and have a drawback that it takes time for maintenance work. Furthermore, in Patent Document 2, there is a dilemma that if the waterproofing is achieved, the heat dissipation of the control device is not sufficient, and if the sufficient heat dissipation is realized, the waterproofing is impaired, and the fastener opened by the maintenance staff for maintenance work There is a risk that the control device cannot be waterproofed when it is inundated.

  The objective of this invention is providing the elevator apparatus provided with the control apparatus which is excellent in maintainability and can implement | achieve reliable waterproofness.

  In a preferred embodiment of the present invention, a control device disposed above the pit in the hoistway and straddling the lowest floor level, and generally between the vicinity of the lower end of the control device and the pit. In addition, a waterproof box is provided which is floated by flooding and has an upper opening so as to cover the control device from below. Specifically, it is a structure in which a member that floats on water is attached to the lower part of the waterproof box. This waterproof box is preferably made of a material that is light and does not corrode easily and exhibits waterproof properties. For example, a synthetic resin such as plastic or polystyrene foam, or a structure in which a vinyl sheet is stretched on an aluminum frame is suitable.

  In another preferred embodiment of the present invention, the control device includes an attachment member for fixing the upper portion of the control device to the guide rail, and the upper limit of the levitation of the waterproof box is set to be higher than the lowest floor level in the waterproof box. The position is to cover up.

  Furthermore, in another desirable embodiment of the present invention, a guide member for the waterproof box is attached to the housing of the control device, and the waterproof box is guided to move up and down. Specifically, a waterproof box guide bracket extending downward from the housing of the control device is attached.

  According to a desirable embodiment of the present invention, it is possible to provide an elevator apparatus including a control device that is excellent in maintainability and can realize reliable waterproofness.

  In addition, according to another preferred embodiment of the present invention, the maintenance work in a normal hoistway can be easily controlled using an existing guide rail without adding a new member such as a rail. The device can be arranged, and when flooded, the control device can be waterproofed to a sufficient upper position.

  Other objects and features of the present invention will be made clear by the embodiments described below.

  FIG. 1 is an overall configuration diagram of an elevator apparatus according to an embodiment of the present invention. The elevator car 1 and the counterweight 2 are balanced by suspending them with a rope 3 via a hoisting machine 4. The car 1 has a structure in which a rope is passed through pulleys 13 and 14 provided in the lower part thereof. The hoisting machine 4 is installed in the pit 15 under the vertical projection of the car 1. FIG. 1 shows the concept of the configuration of the car 1, the counterweight 2, and the hoisting machine 4, and the arrangement relationship on the plane is partially ignored. The control device 5 is arranged along the side wall of the hoistway 12 so as to be attached to the guide rail 6 with a bracket 7. That is, the control device 5 is arranged in the hoistway so that the length in the vertical direction straddles the lowest service floor level 16 of the elevator car 1. The control device 5 is attached to the guide rail 6 by a bracket (attachment member) 7 attached to the casing of the control device 5 and the guide rail 6 at the upper part thereof.

  When the hoist 4 or the control device 5 is installed in the pit 15, measures are taken when the pit 15 is flooded due to water damage or the like. The hoisting machine 4 can have a waterproof structure, but the control device 5 is difficult to have a sealed waterproof structure for thermal reasons. It is also conceivable that the control device 5 is installed above the lowest floor level 16 and corresponds to the flooding of the pit 15. However, the depth of the pit 15 is often about 1.5 m from the lowest floor level 16, and when the maintenance staff checks the control device 5 from the pit 15, workability is deteriorated.

  Therefore, in this embodiment, the control device 5 is installed near the pit 15 in the hoistway 12. As a countermeasure against flooding, the control device 5 is covered with a waterproof box 8. That is, the waterproof box 8 is normally located directly below the control device 5 and has a box-like shape in which a floating member 10 that floats on water is attached to the lower part and the upper part is opened.

  Usually, as shown in FIG. 1, the waterproof box 8 is below the lower end 51 of the control device 5 and does not cover the control device 5. For this reason, heat dissipation of the control device 5 is sufficient, and maintenance work can be easily performed. On the other hand, when the pit is flooded, the waterproof box 8 floats as the water level rises and covers the control device 5 to a level above the floor level 16 of the lowest floor, so that the flooding of the pit 15 can be resisted.

  FIG. 2 is a partially enlarged view of the control device 5 in one embodiment of the present invention. As described above, the control device 5 is attached to the rail 6 by the bracket (attachment member) 7 above the control device 5. That is, brackets 71 and 72 extending upward from the casing of the control device 5 are attached to brackets 73 and 74 extending laterally from the guide rail 6. A floating member 10 that floats on water is attached to the bottom of the waterproof box 8. Further, by attaching the brackets 91 and 92 to the waterproof box 8 and guiding them with the guide rail 6 of the counterweight 2, the horizontal movement of the waterproof box 8 can be restricted and moved freely in the vertical direction.

  Normally, as shown in FIGS. 1 and 2, the entire control device 5 is exposed in the hoistway 12 so that the control device 5 can dissipate heat. On the other hand, when the pit 15 is flooded, the waterproof box 8 is floated by the floating member 10 below the waterproof box 8. The floated waterproof box 8 covers the control device 5 in such a manner that the control device 5 is swallowed from the lower opening. When the flooding is severe, the upper end portion of the waterproof box 8 has such a length as to reach above the lowest floor level 16.

  FIG. 3 shows a state in which the control device 5 is covered with a waterproof box 8 and the control device 5 is waterproofed at the time of pit flooding. As a result, even when the pit is flooded due to water damage or the like, the control device 5 is not immersed in water.

  FIG. 4 is a partially enlarged view of the control device 5 according to another embodiment of the present invention. In FIG. 4, the waterproof box 8 is not supported by the guide rail 6 or the like, but the waterproof box guide brackets (guide members) 111 and 112 are attached to the lower part of the housing of the control device 5. Similar to FIGS. 2 and 3, the waterproof box 8 is provided with a buoyant member 10 that floats on water at the bottom thereof.

  In this embodiment, the brackets 111 and 112 are attached to the casing of the existing control device 5, and the movement in the horizontal direction is regulated by following the brackets 111 and 112, and can be moved freely in the vertical direction. As a result, the waterproof box 8 can be guided by the brackets 111 and 112 and floated vertically to cover the control device 5 at the time of flooding. The waterproof box guide brackets 111 and 112 have such a length that the upper end of the waterproof box 8 can cover the control device 5 up to above the lowest floor level 16.

  FIG. 5 shows a state where the control device 5 is covered with a waterproof box 8 and the control device 5 is waterproofed at the time of pit flooding.

  1 to 5 described above, when the pit 15 is submerged due to flooding or the like, the waterproof box 8 is levitated from the bottom and rises up, and the control device 5 is moved from the lowest floor level 16 to the upper part. The cover can be covered and water does not enter the control device 5. As described above, since water does not enter the control device 5, it is not necessary to replace the control device 5 due to water loss, and the operation of the elevator can be resumed quickly even in the event of a flood. Further, since the control device 5 can be installed in the vicinity of the pit 15 below the lowest floor level 16, maintenance work can be easily performed in the pit, and it climbs to an inspection table (not shown) as in the past. There is no need to prevent accidents such as the drop of maintenance personnel. Furthermore, the control device 5 can be arranged along the pit side wall, and the waterproof box 8 can be installed immediately below the control device 5, so that the degree of freedom of arrangement of the equipment in the pit 15 is high and the maintainability can be improved.

  According to the above embodiment, the control device installed in the vicinity of the pit 15 with a very simple configuration in which the waterproof box 8 is added so as to guide existing equipment such as the guide rail 6 and the housing of the control device 5. 5 can be protected from pit flooding. Further, since the waterproof box 8 is installed directly under the control device 5 arranged along the side wall of the pit 15, the waterproof box 8 does not interfere with the maintenance work and the maintainability is improved.

The schematic block diagram which shows the whole elevator apparatus by one Example of this invention. Similarly, the elements on larger scale of the control apparatus arrange | positioned at the pit by one Example of this invention. Similarly, in one embodiment of the present invention, a control device waterproof state diagram at the time of pit flooding. Similarly, the elements on larger scale of the control apparatus arrange | positioned at the pit by the other Example of this invention. Similarly, in another embodiment of the present invention, the control device waterproof state diagram at the time of pit flooding.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Car, 2 ... Counterweight, 3 ... Rope, 4 ... Hoisting machine, 5 ... Control device, 6 ... Guide rail, 7 ... Control device attachment member (bracket), 8 ... Waterproof box, 9, 11 ... Waterproof Box guide mounting members (brackets), 10 ... levitation members, 12 ... hoistway, 13, 14 ... pulleys.

Claims (5)

  An elevator car serving multiple floors, a hoist installed in a hoistway, a counterweight suspended along with the car via the hoist, and the car and the counterweight In an elevator apparatus provided with a guide rail for guiding, a control device arranged so as to be located above the pit in the hoistway and above and below the lowest floor level, and usually the control device An elevator apparatus characterized in that a waterproof box is provided between a lower end and the pit, and is levitated by submergence and opened upward so as to cover the control device from below.   The elevator apparatus according to claim 1, wherein the waterproof box has a structure in which a floating member that floats on water is attached to a lower part of the waterproof box.   3. The control device according to claim 1, wherein the control device includes an attachment member that fixes an upper portion of the control device to the guide rail, and the upper limit of the levitation of the waterproof box is a position that covers the control device to a level higher than the lowest floor level. The elevator apparatus characterized by comprising.   The elevator apparatus according to claim 1, further comprising a guide member that guides the waterproof box to the guide rail so as to move up and down.   The elevator apparatus according to any one of claims 1 to 3, further comprising a guide member that is attached to a housing of the control device and guides the waterproof box in a vertically movable manner.

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