JPH10182037A - Hydraulic elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a main rope from displaced from the groove of a pulley and to facilitate restoration by a method wherein when an earthquake occurs and a building is inclined, in an indirect type hydraulic elevator, a hydraulic jack is vertically erected and a pulley is rotated in a given angle arc centering around an auxiliary rail core. SOLUTION: When an earthquake occurs and a building is inclined, to restore a hydraulic elevator, an inclining hydraulic jack 3 is first erected into a vertical state and a car is stopped at a topmost floor. A pulley core 3c is rotated in a given angle arc in the inclination directions of an auxiliary rail core 5c and a building and the shaft 3s of a pulley 3 is fixed at the horizontal member 4b of the support body 4 by means of a bolt. As noted above, since the main rope is extended approximately in the same direction as that of the pulley core 3c, the main rope is prevented from being displaced from a groove 3v.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to the occurrence of an earthquake or the like,
The present invention relates to an indirect hydraulic elevator apparatus capable of recovering emergencyly when a building is inclined.

[0002]

2. Description of the Related Art The structure of an indirect hydraulic elevator will be described with reference to Japanese Utility Model Laid-Open No. 1-1679.

FIG. 3 is a diagram showing the entire configuration of a hydraulic elevator, and FIG.
FIG. 5 is a front view of the pulley portion of the hydraulic jack, and FIG. 5 is a plan view of FIG.

In FIG. 1, reference numeral 1 denotes a hoistway, 2 denotes a hydraulic jack erected from a pit of the hoistway 1, 2a denotes a cylinder of the hydraulic jack 2, and 2b denotes a plunger. 3 is a pulley arranged on a vertical member 4c provided at the tip of the plunger 2b, 4a is a guide shoe fixed to an end of a horizontal member 4b provided in a horizontal direction of the support 4, and 5 is a guide shoe 4a. A sub-rail is provided correspondingly and guides a guide shoe 4a fixedly and movably engaged with the hoistway 1. Reference numeral 5a protrudes from the hoistway 1 and is connected to the sub-rail 5. The bracket 6 to be fixed is a basket provided in the hoistway 1 and is guided by a main rail 7 erected on the hoistway 1 to move up and down. 8 is a connected body 6 of a car 6 at one end
a, and the other end is a main rope connected to the fixed body 9 of the hoistway 1.

The main rope 8 is connected to the connecting body 6a and the fixed body 9 of the car 6 almost vertically from the pulley 3, and the pulley core 3c of the pulley 3 and the rail core 5 of the sub-rail 5 are connected.
It is installed so as to be parallel to c.

[0006] The conventional hydraulic elevator apparatus is constructed as described above, and pressurized oil is injected into or discharged from the hydraulic jack 2 by a hydraulic drive device mainly composed of a hydraulic pump (not shown), whereby the plunger 2b of the hydraulic jack 2 is moved. The car 6 moves up and down via the pulley 3 and the main rope 8.

Since the pulley 3 is also installed as described above, the parallelism between the sub-rail core 5c and the pulley 3c is maintained regardless of the floor position of the car 6, and the sub-rail core 5c The rotation angle α with the auxiliary pulley core is always 0 degrees. The angle at which the main rope 8 enters the pulley 3 is also substantially 0 degree.

[0008]

In the above prior art, a large earthquake may occur and the building may be inclined.

At this time, both the main rail 7 and the sub rail 5 fixed to the hoistway 1 are inclined together with the building.

When restoring such a hydraulic elevator, the car 6 must be guided along the main rail 7 which remains inclined because the main rail 7 has a mutual relationship with the three-way frame of the entrance and exit.

On the other hand, since the sub rail 5 must move the plunger 2b vertically up and down, the sub rail 5 must be centered anew accordingly.

By the way, if the auxiliary rail 5 is vertically centered, there is no problem when the car 6 is located on the lower floor, but when the car 6 is located on the higher floor, the main rope is connected to the groove 3v of the pulley 3.
, The sub rail 5 is displaced from the groove 3v of the pulley 3, which causes a problem.

The present invention has been made in view of the above-described drawbacks, and it is an object of the present invention to provide a hydraulic elevator apparatus capable of recovering an indirect hydraulic elevator in an emergency when a building is tilted due to an earthquake or the like.

[0014]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydraulic jack erected on a hoistway in a building, and a pulley disposed at an upper end of a plunger, holding the pulley and fastening the pulley to the plunger. A support is provided movably engaged with a sub-rail supported by the hoistway, and one end is connected to a fixed body of the hoistway, wound around the pulley, and the other end is the hoistway. A main rope connected to the connecting portion of the car is provided, and in the hydraulic elevator apparatus for raising and lowering the car through the pulley and the main rope by the operation of the hydraulic jack, the building is inclined due to an earthquake or the like. When the hydraulic jack stands vertically, the pulley core of the pulley is rotated by a predetermined angle in a direction in which the building is inclined, and the pulley is fixed to a horizontal portion of the support. It is achieved by Rukoto.

In the present invention, when the building is inclined,
In order to restore the hydraulic elevator, the hydraulic jack is first erected vertically. Then, the pulley core of the pulley is rotated in the direction in which the hoistway is inclined, and the pulley is fixed to the horizontal member of the support.

Therefore, since the main rope is oriented substantially in the same direction as the pulley core, the main rope can be prevented from being displaced from the groove.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a front view of a pulley portion of a hydraulic jack according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. Note that the same reference numerals as those in FIGS. 3 to 5 denote the same parts, and a description thereof will be omitted. In the figure, pulley core 3
In order to incline the sub-rail core 5c by a predetermined angle, the horizontal member 4b is divided into two parts, and a triangular horizontal member 4b is fixed on the upper part of the vertical member 4c, and the shaft 3s of the pulley 3 is illustrated on the horizontal member 4b. It is fixed with bolts that do not.

Next, the operation of the present invention will be described.

When an earthquake occurs and the building is tilted, in order to restore the hydraulic elevator, the tilted hydraulic jack 3 is first erected vertically, the car 6 is stopped on the top floor, the pulley 3 and the car are restored. 6, the relative position of the connecting body 6a and the like is measured, and the rotation angle α of the pulley 3 is used as a parameter to calculate the freight angle (the angle between the main rope 8 and the pulley core 3c) with respect to the groove 3v of the main rope 8. Are designed and manufactured so that the values are within a predetermined range, and assembled as described above.

As described above, in the present invention, since the main rope 8 is substantially in the same direction as the pulley core 3c, it is possible to prevent the main rope 8 from being displaced from the groove 3v.

[0022]

As described above, according to the present invention, when an earthquake or the like occurs and a building is tilted, in a hydraulic elevator of an indirect type, a hydraulic jack is installed vertically and a pulley is With a configuration in which the main rope is rotated by a predetermined angle with respect to the rail core, the main rope does not run over the groove of the pulley, and can be easily restored.

[Brief description of the drawings]

FIG. 1 is a front view of a pulley portion of a hydraulic jack according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an overall configuration diagram of a conventional hydraulic elevator.

FIG. 4 is a front view of a conventional hydraulic jack pulley.

FIG. 5 is a front view of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Hydraulic jack 2b Plunger 3 Pulley 3v Groove 4 Support 5 Secondary rail 6 Basket 6a Connecting body 8 Main rope 9 Fixed body α Rotation angle

Claims (1)

[Claims] 1. A pulley disposed at the upper end of a plunger of a hydraulic jack erected on a hoistway in a building, and holding the pulley and moving to a sub-rail fastened to the plunger and supported by the hoistway. A support that is engaged with the shaft, one end of which is connected to the fixed body of the hoistway, is wound around the pulley, and the other end is connected to a connecting portion of a car arranged in the hoistway. In the hydraulic elevator apparatus for raising and lowering the car through the pulley and the main rope by the operation of the hydraulic jack, when the building is inclined due to an earthquake or the like, the hydraulic jack is set up vertically. And a pulley core of the pulley is rotated by a predetermined angle in a direction in which the building is inclined, and the pulley is fixed to a horizontal portion of the support. Data device.