JP2010143670A - Elevator device - Google Patents

Abstract

【Task】
The object of the present invention is that when the elevator car is stopped at the floor level, the door has been moved up or down with the door open due to a malfunction of the braking device or an erroneous command. In such a case, it is an object of the present invention to provide a highly reliable elevator apparatus that prevents the upward movement or the downward movement.
[Solution]
The elevator apparatus 100 according to the present invention includes an elevator car 100 and a counterweight 7, a rope 8, and a hoisting machine 9. And a landing door 6 provided at the floor entrance of the hoistway 1 that opens and closes when the car 2 arrives. The hoistway 1 has a car door with the car 2 stopped at the floor level. There is provided door opening travel prevention means 5 that does not interfere when the car 4 is closed and prevents the car 2 from rising or lowering by contacting the car door 4 when the car door 4 is open.
[Selection] Figure 2

Description

  The present invention relates to an elevator apparatus, and more particularly to an improvement of an elevator apparatus that prevents traveling with a car door open.

  In the conventional elevator apparatus, when landing on the elevator floor or the destination floor, when the door is open, the braking device is operated by the control device so that the car does not move. However, it is assumed that the car moving up and down the hoistway moves up or down while the door is open due to some factor, such as a decrease in the holding power of the braking device or an erroneous command. There is a risk that such a phenomenon will develop into a serious accident. In the unlikely event that such a phenomenon occurs, it is assumed that the elevator will not be used for a long time due to the effort and time required for recovery. It also leads to annoying people. As a technique for preventing such a situation, for example, an elevator apparatus described in Patent Document 1 is known.

  In the technique described in Patent Document 1, when the door of the car is opened, the car door comes into contact with a part of the stop device provided in the car, and the stop device is rotated to sill the arm of the stop device. It arranges in the position where it engages. When the door is closed, contact with a part of the stop device is lost, and the arm of the stop device is returned to a position where it does not engage with the sill or the like by a return spring or the like. When the car is moved up or down while the door is open, the arm of the stop device can be engaged with a sill or the like to stop the drift of the car.

JP-A-8-319074

  However, although the technology described in Patent Document 1 is configured to operate by door contact with the opening and closing of the door of the car, it is also assumed that the door operates without contact for some reason. Since the stop device is provided on the car, if the stop device operates while moving in the hoistway, it may cause damage to the car or hoistway or cause it to break down. It was.

  Moreover, since there are many movable parts, it is also considered that the stopping device breaks down. For example, if the stop device does not return to its original position while operating, the car cannot be driven as usual, and the elevator device cannot be used unless it is repaired.

  Conversely, contact parts with the door may be damaged or the rotating mechanism itself may not operate.In such a case, the stop device does not operate even though the door is open. If the car moves up or down while the door is open, it cannot be prevented.

  In recent years, with the revision of laws such as the Building Standards Law, increasing earthquake resistance and safety has become important. However, some conventional elevator system configurations are not compatible.

  The present invention has been made in view of the above problems, and when the elevator car is stopped at the floor level, the elevator is moved up with the door open due to a malfunction of the braking device or an erroneous command. Alternatively, an object of the present invention is to provide a highly reliable elevator apparatus that prevents an upward movement or a downward movement when it has moved downward.

  In order to achieve the above object, an elevator apparatus according to the present invention includes a car and a counterweight that move up and down in a hoistway provided in a building, a rope that connects the car and the counterweight, and the rope. In an elevator apparatus comprising a hoisting machine that moves the car and the counterweight up and down by driving the car, a car-side door that can be opened and closed at an opening of the car, and a floor of the hoistway A landing-side door provided at the doorway that opens and closes when the car lands, and the hoistway interferes with the car-side door closed when the car is stopped at the floor level. First, door open travel prevention means is provided for preventing the car from rising or descending by contacting the car side door when the car side door is open.

  In the present invention, when the elevator car is stopped at the floor level, the elevator car is moved up or down with the door open due to some factor, such as a decrease in the holding power of the braking device or an erroneous command. When it moves, the elevator apparatus which prevents the raising or lowering movement with high reliability can be provided.

  Hereinafter, the present invention will be described in detail based on examples.

  FIG. 1 is a longitudinal sectional view showing an overall outline of an elevator apparatus according to an embodiment of the present invention. The elevator apparatus 100 shown in the figure drives a car 2 and a counterweight 7 that move up and down in a hoistway 1 provided in the building, a rope 8 that connects the car 2 and the counterweight 7, and the rope 8. And a hoisting machine 9 for moving the car 2 and the counterweight 7 up and down. And it has the car side door 4 provided in the opening of the car 2 so that opening and closing is possible, and the hall side door 6 provided at the floor doorway of the hoistway 1 to open and close when the car 2 arrives.

  In the embodiment shown in FIG. 1, the hoisting machine 9 and the deflecting wheel 10 are provided in the machine room 13. In addition, the rope 8 is lifted with one end connected to the car 2, wound around the sheave of the hoisting machine 9, wound around the deflecting wheel 10, and again wrapped around the sheave of the hoisting machine 9 and the deflecting wheel 10. It descends later and the other end is connected to the counterweight 7.

  Further, in the hoistway 1, a pair of guide rails (not shown) extend up and down the hoistway 1 toward the entrance of the car 2 along the path along which the car 2 moves up and down. Provided to guide the vertical movement of the car 2. Similarly, a counterweight guide rail (not shown) is provided on the counterweight 7 so as to extend vertically on the right and left sides of the counterweight 7 along the path along which the counterweight 7 moves up and down. It is configured to guide the vertical movement of the counterweight 7.

  In the elevator apparatus 100 having such a configuration, when the hoisting machine 9 operates, the rope 8 is driven, and when the rope 8 is driven, the car 2 and the counterweight 7 are moved up and down in opposite directions. The car 2 moves between the floors from the lowermost floor 11 to the uppermost floor 12. In FIG. 1, only the lowermost floor 11 and the uppermost floor 12 are shown for convenience.

  FIG. 2 is an enlarged vertical sectional view showing a state of the car 2 stopped at the floor level 3 of the hoistway 1. In FIG. 2, the state stopped at the lowest floor 11 is described as an example. Here, the floor level is the stop of the destination floor when the car 2 stops the destination floor, such as stoppage to the calling floor by calling from the floor of the elevator apparatus 100 or stop by specifying the destination floor of the car 2. The almost same height as the floor is called the floor level. Further, the phrase “the car stops at the floor level” means a state in which the floor surface in the car 2 is stopped in a state substantially the same as the height of the floor level. Therefore, in the present embodiment, the target floor is the lowest floor 11, so the floor level 3 is substantially the same height as the floor surface of the lowest floor 11. Note that the floor surface of the car 2 that stops depending on the weight of the passengers who enter the car 2 is slightly raised or lowered, and there is an allowable range of the height of the car floor relative to the control floor level. Therefore, stopping the car at the floor level does not mean that the floor level and the floor surface of the car 2 are exactly the same.

  As shown in FIG. 2, the hoistway 1 does not interfere when the car 2 is stopped at the floor level 3 and the car-side door 4 is closed, and when the car-side door 4 is opened, the car 2 is open. A stopper 5 is provided as a door-opening travel prevention means that abuts the car-side door 4 to prevent the car 2 from being raised or lowered when the car is raised or lowered. The stopper 5 is formed of a member having an L-shaped cross section, and one side is firmly fixed to the upper hoistway wall 1a and the lower hoistway wall 1b of the floor. When the car 2 moves upward, the stopper 5 fixed to the upper hoistway wall 1a comes into contact with the car-side door 4 to prevent the car 2 from rising, and when the car 2 moves downward. Is configured such that a stopper 5 fixed to the lower hoistway wall 1b comes into contact with the car-side door 4 to prevent the car 2 from descending.

  3 is a plan view of the car-side door 4 of the car 2 shown in FIG. 2 viewed from above, and FIG. 4 is a plan view of the car-side door 4 of the car 2 shown in FIG. FIG. As shown in the figure, the elevator apparatus in this embodiment is a double door that opens to the left and right. As shown in FIG. 3, the stopper 5 is set to a length that does not interfere with the car-side door 4 when the left door 4a and the right door 4b are closed, and is disposed at such a position. When the car-side door 4 is opened as shown in FIG. 4, the stoppers are as shown in the overlapping portion 4c indicated by the oblique lines shown in the left door 4a and the overlapping portion 4d indicated by the oblique lines shown in the right door 4b. A stopper 5 is attached so that the car-side door 4 overlaps, and the car 2 comes into contact with the car-side door 4 when the car 2 is raised or lowered on one side facing the car-side door 4 of the stopper 5. It is possible to prevent 2 from rising or falling.

  That is, when the car 2 is in the door-closed state, the stopper 5 is fixed at a position where it does not interfere with the raising / lowering of the car 2 and is provided at the floor doorway of the car-side door 4 and the hoistway 1 to land the car 2. When the landing-side door 6 configured to open and close together with the car-side door 4 is open, the overlapping portions 4c and 4d between the car-side door 4 and the stopper 5 are fixed. The stopper 5 needs to be fixed with such a strength that the movement of the car 2 can be suppressed when the car 2 is raised or lowered.

  The car-side door 4 that engages with the stopper 5 has a weight difference between the counterweight 7 and the car 2 and the passengers, luggage, etc. At the time of malfunction, the driving force by the hoisting machine 9 is also applied to the stopper 5, so that the stopper 5 and the car-side door 4 need to have strength to withstand that force.

  Furthermore, the car side door 4 can be attached to the car 2 in various ways. When the car side door 4 prevents the car 2 from moving up or down, the car side door 4 comes into contact with the stopper 5. The strength of the car 2 that can regulate the movement of the car 2, especially the strength that can regulate the movement of the car 2 by the car-side door 4 that contacts the stopper 5 not only in the upward direction but also in the downward direction. It is also necessary for the car side door 4 to be attached to 2.

  As described above, according to the present embodiment, it is possible to mechanically correspond to the door opening travel prevention structure of the elevator car. Specifically, when the car 2 is moved up or down while the car-side door 4 is open, the car-side door 4 itself interferes with the stopper 5, and the stopper 5 comes into contact with the car-side door 4 to Since the ascent or descent is prevented, it is possible to reliably prevent the car 2 from being raised or lowered when the door is open. Further, since the car 2 is prevented from rising or lowering when the car-side door 4 is opened by the contact between the car-side door 4 and the stopper 5, the stop device does not malfunction. The operation is ensured and the elevator can be made highly reliable. Furthermore, the state in which the landing-side door 6 and the car-side door 4 are open is a state in which a person enters and exits. In such a state, the ascending or descending movement of the car is reliably prevented. It is possible to provide a highly safe elevator device.

  The stopper 5 is preferably installed in the vicinity of the vertical position of the landing door 6 in order to prevent the elevator car 2 moving in the hoistway 1 from moving up or down. By doing so, the stopper 5 and the car-side door 4 come into contact with each other by a slight upward or downward movement of the car 2, and the movement of the car 2 when the door is open is restricted in a small state. Is possible.

  In the present embodiment, the lowermost floor 11 is described as an example. However, the present invention is not limited to the structure of the lowermost floor 11 alone, and the same door is also used for other floors. An open travel prevention means may be provided, or a configuration provided only on a specific floor where safety is particularly required may be employed. If such a structure is applied to all the floors, an elevator with higher safety can be obtained. In addition, if such a structure is applied only to specific floors that require safety or floors that are extremely different in usage frequency and frequently used, the installation cost will be reduced, and the construction client side will There are also advantages such as ease of use.

  In the first embodiment, the example in which the car-side door 4 is opened on both the left and right sides has been described. 5 is a plan view of the car 2 door 4 of the car 2 as viewed from above, and FIG. 6 is a plan view of the car 2 of the car 2 as viewed from above. As shown in the figure, the elevator apparatus in the present embodiment is a one-side opening door that opens to the left side. Also in this embodiment, the stopper 5 is set to such a length that does not interfere with the car-side door 4 when the left door 4a and the right door 4b are closed as shown in FIG. ing.

  When the car-side door 4 is opened as shown in FIG. 6, the stoppers are as shown in the overlapping portion 4c indicated by the oblique lines shown in the left door 4a and the overlapping portion 4d indicated by the oblique lines shown in the right door 4b. A stopper 5 is attached so that the car-side door 4 overlaps, and the car 2 comes into contact with the car-side door 4 when the car 2 is raised or lowered on one side facing the car-side door 4 of the stopper 5. It is possible to prevent 2 from rising or falling. Even if it is such a form, there can exist an effect similar to what was demonstrated in Example 1. FIG.

  Although Example 1 or Example 2 demonstrated the example which provided the stopper 5 in the upper hoistway wall 1a and the lower hoistway wall 1b of the hoistway 1, the case where it is difficult to provide in the wall surface of the hoistway 1 is also assumed. The In such a case, the door-opening travel prevention means is installed in the door attachment device for attaching the landing-side door 6 provided on the floor of the hoistway 1 as a structure provided on the building side and installed in the vicinity of the car 2. May be provided. With this configuration, the range in which the door opening travel preventing means can be installed can be expanded, and the installation structure of the door opening travel preventing means can be simplified.

  In the first embodiment or the second embodiment, the stopper 5 and the car-side door 4 are in contact with each other when the car 2 slightly moves up or down. However, the car-side door 4 is opened. The passenger 2 may feel anxious about the upward movement or the downward movement of the car 2 while the movement distance is small. In order to restrict such slight movement, the stopper 5 and the car-side door 4 are always stopped when the car-side door 4 is opened and the car-side door 4 is opened in a state where it is stopped at the floor level. You may comprise so that 5 may be contact | abutted. In that case, it is preferable to provide a roller or the like so as not to hinder the opening / closing operation of the door, and to adopt a structure that allows the stopper 5 and the door to move smoothly in the left-right direction. Such a roller may be provided on the contact surface of the stopper 5 with the car-side door 4 or may be provided on the contact surface of the car-side door 4 with the stopper 5.

  In addition, even when stopping at the floor level, there are some errors in the number of passengers in the car, the weight of the luggage, or in terms of control, and even if it stops slightly off the floor level, In order to prevent the stopper 5 from interfering with the opening / closing operation of the car-side door 4, the abutting roller may be provided with a suspension mechanism that can swallow this error.

  As described above, the present invention is not limited to the above-described embodiments, but can take various forms within the scope defined by the claims.

It is a longitudinal section showing the whole elevator device outline in one embodiment of the present invention. It is an expanded longitudinal cross-sectional view which shows the state of the cage | basket | car stopped at the floor level of a hoistway. It is the top view which looked at the state which the car side door of the car of FIG. 2 closed from the upper direction. It is the top view which looked at the state where the car side door of the car of FIG. 2 opened from the upper direction. It is the top view which looked at the state where the cage | basket | car side door of the cage | basket | car of the one side hinged door opened state was closed. It is the top view which looked at the state where the cage | basket | car side door of the passenger car of the one side hinged door open state opened.

Explanation of symbols

1 hoistway 1a upper hoistway wall 1b lower hoistway wall 2 car 3 floor level 4 car side door 4a left door 4b right door 5 stopper 6 landing side door 6a landing side left door 6b landing side right door 7 counterweight 8 Rope 9 Hoisting machine 10 Baffle 11 Bottom floor 12 Top floor 13 Machine room 100 Elevator

Claims (2)

A car and a counterweight that move up and down in a hoistway provided in the building, a rope that connects the car and the counterweight, and the rope and the counterweight are moved up and down by driving the rope. In an elevator device equipped with a hoisting machine,
A car-side door provided to be freely opened and closed at the opening of the car, and a landing-side door that is provided at a floor doorway of the hoistway and opens and closes when the car is landing,
The hoistway does not interfere with the car-side door closed when the car is stopped at the floor level, and abuts the car-side door when the car-side door is open. An elevator apparatus comprising door opening travel prevention means for preventing a car from rising or descending.   2. The elevator apparatus according to claim 1, wherein the door opening travel prevention means is provided in a door mounting apparatus for attaching a landing side door provided on a floor of the hoistway.

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