JP2007210707A - Elevator confinement rescue method - Google Patents

Abstract

An object of the present invention is to provide a confinement and rescue method for an elevator without a machine room that can move a car in a short time and rescue a confined person in an inexpensive configuration in a situation where the car and the balance weight are in an equilibrium state and cannot be electrically operated.
[MEANS FOR SOLVING PROBLEMS] A means (9) for releasing a brake from outside the hoistway and a balance chain (7) connected by connecting brackets (8a, 8b) capable of detaching a plurality of chains are suspended from the lower part of the car (1) and the counterweight (2) below the hoistway. When the car 1 is raised, the connecting bracket 8a is separated from the lowest point of the balance chain 7 at the car side, and when the car 1 is lowered, the balance weight side is lower than the lowest point of the balance chain 7. Thus, by separating the connecting bracket 8b, the mass on the counterweight side and the weight on the counterweight side are brought into an unbalanced state, the brake 5 is released by the brake release means 9, and the car 1 is moved.
[Selection] Figure 1

Description

  The present invention relates to a confinement and rescue method for an elevator without a machine room in which a main rope connected to a car and a weight is connected to a hoisting machine installed in a hoistway to lift and lower the car.

  In the elevator without machine room that lifts the car by hanging the main rope with the car on one end and the weight that is balanced and suspended at the other end on the hoistway in the hoistway, In general, by utilizing the unbalanced mass between the car-side mass and the counterweight-side mass carrying the passenger, the car is moved to a position where it can be rescued by releasing the brake, and the passenger is rescued from the entrance.

  However, the car does not move even when the brake is released when the car-side mass carrying the passenger at the time of the emergency stop and the counterweight-side mass are in an equilibrium state.

In this way, when the weight on the counterweight side and the weight on the counterweight side are in an equilibrium state, a chain that connects the bottom of the car and the bottom of the counterweight is provided, and the weight is counterbalanced on the side of the car by suspending the weight on the chain. Means are known for moving the car by releasing the brakes with the side mass unbalanced. (See Patent Document 1).
JP 2000-169055 A (paragraphs 0016 to 0018, FIG. 12)

  However, in the above conventional technology, a weight that is not used at all times is required to balance the weight on the car side and the weight side so that the weight is not used at all times. There is a problem that if the weight is permanently installed on the site, the cost becomes high, and if the weight is transported, the rescue time becomes long.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide an elevator confinement rescue method that can rescue a confinement person in a short time with an inexpensive configuration.

  In order to achieve the above object, the invention according to claim 1 of the present invention is characterized in that a main rope with a weight on one end and a weight suspended on the other end is hung on a sheave of a hoisting machine installed in a hoistway. In an elevator without a machine room that moves up and down, a means for releasing the brake from the outside of the hoistway and a balance chain in which a plurality of chains are connected by a detachable fitting are suspended from the lower part of the counterweight and the counterweight below the hoistway. The configuration.

  In the invention according to claim 1 configured as described above, when the car and the counterweight are in an equilibrium state, when the car is lifted, the connecting bracket is separated on the car side from the lowest point of the counterbalance chain. When lowering the car, the connecting bracket is separated on the counterweight side from the lowest point of the counterbalance chain, so that the mass of the car side and the counterweight side is unbalanced, and the brake releasing means The goal can be achieved by releasing the brakes and moving the car.

  According to the present invention, a confinement person can be rescued in a short time with an inexpensive configuration.

  The best mode for carrying out the elevator confinement and rescue method of the present invention will be described below with reference to the drawings.

  FIG. 1 is an explanatory view showing the configuration of an elevator according to an embodiment of the present invention, FIG. 2 is a diagram showing a method of separating a balance chain for connecting a carriage and a balance weight, and FIG. 3 is a confinement rescue according to an embodiment of the present invention. FIG. 4 is a diagram showing a connecting metal fitting according to an embodiment of the present invention.

  In FIG. 1, a control for controlling the hoisting machine 4 is wound around a sheave of a hoisting machine 4 composed of a motor and a brake 5 installed in the ascending and descending, and a main rope 3 connecting a car 1 and a counterweight 2 is wound around. The device 6 is installed in the hoistway.

  The balance chain 7 includes a balance chain 7 that is connected to the lower portion of the counterweight 2 and is suspended below the hoistway. The end of the balance chain 7 that connects the balance chain 7 to the lower portion of the cage 1 can be opened. 4 is provided, and a connection fitting 8b for connecting the balance chain 7 to the lower part of the balance weight 2 is provided.

  In the elevator configured as described above, generally, when the loading mass of the car 1 is 45 to 55% of the rated loading mass, the mass applied to the car side of the hoist 4 and the mass applied to the counterweight side are in an equilibrium state. It comes to become.

  Here, even when the elevator stops for some reason and electric operation is not possible, if the passengers in the car 1 are less than 45% or more than 55% of the rated load capacity, the brake release means from outside the hoistway By releasing the brake 5 using 9, the car 1 is moved using the unbalanced mass on the counterweight side and the weight side, and the passenger is rescued from the doorway.

  On the other hand, when the passengers in the car 1 are 45% to 55% of the rated load capacity, when the car 1 is raised, the connecting bracket 8a on the car side from the lowest point of the balance chain 7, When the car 1 is lowered, the balance chain 7 is separated from the lowermost point of the balance chain 7 by the connection fitting 8b on the counterweight side.

  When the balance chain 7 is separated, as shown in FIG. 2, for example, one end of the string is passed through the upper chain 7c of the connection fitting 8a and fixed to the lower chain 7d of the connection fitting 8a (A in the figure). After holding or temporarily fixing the anti-fixed side (B in the figure) of the string passed through the chain 7c, the connecting chain 8a is removed, and the gripped string is sent out to the fixed side so that the balance chain 7 is safely separated.

  Then, as shown in FIG. 3, the separated chains are fixed together by the connecting metal fitting 8a so as not to contact the bit, so that the mass on the side of the car and the side of the weight is unbalanced. The rescue worker 10 lifts the car 1 by releasing the brake 5 from outside the hoistway using the brake releasing means 9.

  In the embodiment configured as described above, a weight that is not always used for each site is not permanently installed, and it is not necessary to carry a weight, and a confined person can be rescued in a short time with an inexpensive configuration.

  FIG. 5 is a view showing a configuration of an elevator provided with a plurality of connecting fittings 8a to 8e on the balance chain 7. As shown in FIG.

  As shown in FIG. 5, by providing a plurality of connecting metal fittings, it is possible to confine and rescue in the same way as described above even at an unspecified car position when stopped.

It is explanatory drawing which shows the structure of an elevator. It is a figure which shows the isolation | separation method of the balance chain which connects a passenger car and a balance weight. It is a figure which shows the state at the time of confinement rescue. It is a figure which shows the example of a connection metal fitting. It is a figure which shows the structure of the elevator provided with several connection metal fittings in the balance chain.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Balance weight 3 Main rope 4 Hoisting machine 5 Brake 6 Control device 7 Balance chain 8a, 8b, 8c, 8d, 8e Connecting bracket 9 Brake release device 10 Rescue worker

Claims (1)

  A means for releasing the brake from the outside of the hoistway in an elevator without a machine room that lifts and raises the car by hanging a main rope with a car on one end and a weight suspended on the other end on a sheave of a hoist installed in the hoistway The suspension chain, which is connected to the chain with removable metal fittings, is suspended from the lower part of the car and the lower part of the hoistway, and the car is raised when the car and the counterweight are in equilibrium. If you want to separate the connecting bracket on the side of the car from the lowest point of the balance chain, if you want to lower the car, by separating the connection bracket on the side of the counterweight from the lowest point of the balance chain, The weight on the side of the car is balanced with the weight on the side of the car, and the car is moved by releasing the brake by the brake release means. Elevator confinement rescue method comprising.

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