JP2002145557A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always secure the optimal condition of a guide rail, preventing dew condensation and freezing in the guide rail. SOLUTION: The temperature of the surface of the guide rail 5 for guiding an elevator car 15 or a balance weight is detected by a temperature sensor 21, and the guide rail 5 is heated by a guide rail heating means 23 based on the detection signal at temperature in a prescribed range to prevent generation of dew condensation and freezing in the guide rail.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator having a guide rail for guiding a car or a counterweight up and down.

[0002]

2. Description of the Related Art Conventionally, a car or a counterweight of an elevator is guided by a guide rail to move up and down.

[0003]

A guide rail for guiding a car or a counterweight up and down is installed in a hoistway, but is easily affected by the outside air temperature and humidity. In particular, when the hoistway is glass-covered or exposed, as in the case of an elevator for observation, the difference in temperature is large, and in winter, dew condensation occurs and rainwater falls directly on Some could freeze.

[0004] Condensation and water droplets not only cause corrosion including the surrounding area, but also cause troubles such as the braking distance of the braking device being longer than a designed value in an emergency.

[0005] This problem has a problem that the riding comfort and running may be adversely affected by the possibility that the problem may be further enlarged in the frozen region and the unevenness of the frozen region.

Accordingly, an object of the present invention is to provide an elevator capable of always obtaining an optimum rail state without being affected by the influence of the outside air temperature and humidity.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, in an elevator having a guide rail for guiding a car or a counterweight, the temperature of the guide rail is detected. And a guide rail heating means for heating the guide rail to a predetermined temperature range based on a detection signal from the temperature detection sensor.

Accordingly, the temperature of the guide rail is constantly monitored by the temperature detecting sensor. For example, when the temperature at which dew condensation occurs or the temperature at which the guide rail froze is detected, the guide rail heating means operates to prevent the dew and freezing. Block and always ensure optimal rail conditions.

According to a second aspect of the present invention, a plurality of temperature detecting sensors and guide rail heating means are arranged along the guide rail, and the rail temperature is controlled and managed for each rail area. And

[0010] This makes it possible to finely detect the rail temperature over the entire area from the top to the bottom of the guide rail such as a place where the temperature is high and a place where the temperature is low, so that the rail temperature can be managed and controlled efficiently.

According to a third aspect of the present invention, the guide rail heating means is a heating wire arranged along the guide rail.

This facilitates construction and rail temperature management.

[0013] According to a fourth aspect of the present invention, the guide rail heating means uses irradiation heat from a heating element.

Thus, the rail temperature can be controlled from a position distant from the guide rail, so that the degree of freedom in arrangement is improved without hindrance.

According to a fifth aspect of the present invention, the guide rail heating means is a combination of a heating element and a reflector for reflecting heat from the heating element toward the guide rail.

[0016] This makes it possible to install the device at a remote position where it does not hinder the ascending and descending, and to efficiently apply heat from the heating element to the guide rail.

According to a sixth aspect of the present invention, the guide rail heating means is arranged along the guide rail to generate heat from the boiler pipe.

Thus, for example, when there is a boiler pipe, the heat of the boiler pipe can be used, which is very preferable in terms of installation cost.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a car frame which can move up and down along a pair of left and right guide rails 5 arranged in the hoistway 3. The car frame 1 is framed in a rectangular shape by upper and lower horizontal frames 7 and left and right vertical frames 9, and each of the upper and lower horizontal frames 7 is provided with a guide shoe 11 at four positions.

The upper horizontal frame 7 of the car frame 1 is supported by a plurality of suspension ropes 13 drawn out from a hoist (not shown). In the lower horizontal frame 7 of the car frame 1, the cab 1
Five car floors 17 are provided.

On the other hand, the guide rail 5 is fixedly supported at a position distant from the wall surface of the hoistway 3 via a mounting bracket 19, and the temperature of the guide rail 5, particularly the surface temperature, is controlled by the temperature detection sensor 21. While
The guide rail heating means 23 heats the rail to a predetermined rail surface temperature.

A plurality of temperature detecting sensors 21 are arranged along the vertical direction at predetermined intervals with respect to the guide rail 5, and by arranging a plurality of the temperature detecting sensors 21, the temperature of the rail surface is detected for each predetermined area. The signals are input to independent control units 25, respectively.

The guide rail heating means 23 is ON, OF
F serves as a heating wire 27 serving as a heater wire for heating or stopping the heating of the guide rail 5 and has a length arranged along the guide rail 5 for each region.

The control section 25 is disposed in a machine room (not shown), and each temperature detection sensor 21 detects that the rail surface temperature of the guide rail 5 has reached a dew condensation temperature or a freezing temperature, for example. When the detection signal is input, it functions to output an ON signal to the heating wire 27 based on the detection signal. Thus, the heating wire 27 enters a heating state, and outputs an OFF signal to the heating wire 27 at other times.

In this case, the control units 25 have independent structures, but a single control unit may control the heating wires 27 to be turned on and off, respectively.

The heating wire 27 may not be heated for each area, but may be heated by one heating wire 27 over the entire area.

In FIG. 1, reference numeral 29 denotes a braking device which acts on the guide rail 5 in a wedge shape to stop the lowering of the car room 15.

Next, the operation will be described with reference to the flowchart shown in FIG.

First, the heater operating temperature for preventing condensation or freezing is set (step S1), and the rail surface temperature is detected and monitored by the temperature detecting sensor 21 (step S2).
At this time, the vertically long guide rail 5 can be finely monitored for each area by each temperature detection sensor 21, and the detection signal from each temperature detection sensor 21 is transmitted to the control unit 25.
, And the rail surface temperature is compared with the set temperature (step S3). If NO in this comparison, the heating wire 27 is turned off (step S4), and the operation returning to step S3 is repeated.

On the other hand, in the case of YES, the heating wire 27 is ON.
In step S5, the guide rail 5 is heated to a predetermined temperature to prevent dew condensation and freezing. After heating for a certain period of time, the process returns to step S2, and the operation of detecting the rail surface temperature is repeated again, so that the optimal rail state of the guide rail 5 can always be reliably obtained.

Although the guide rail heating means 23 of this embodiment has been described as being applied to the guide rail 5 for moving the car room 15 up and down, a guide rail (not shown) for guiding the counterweight up and down. ) Can also be applied.

The guide rail heating means 23 is not specified as the heating wire 27.

For example, as shown in FIG.
A heating element 31 is provided on the wall surface of the hoistway 3 which is separated from the heating element 3 so as not to interfere with the lifting member.
1, the heating may be performed by irradiation heat from a position away from the guide rail 5.

Alternatively, as shown in FIG. 4, a combination of the heating element 31 and the reflection plate 33 may be used.

Thus, since the heating is performed from a position distant from the guide rail 5, it is possible to dispose the guide rail 5 without obstructing the elevating member. Heat can be efficiently applied to the guide rail 5.

Also, as shown in FIG. 5, a main boiler pipe 35 disposed on the wall of the hoistway is connected to a main boiler pipe 35 via opening / closing valves 37 and 38 which are controlled to be openable and closable by a signal from the control unit 25. Boiler piping 39 arranged along the guide rail 5
May be used as means for utilizing the pipe heat of the boiler pipe 35 by communicating with the boiler pipe 35. Of course, it is also possible to use a means for heating over the entire area with one continuous boiler pipe 39.

In this embodiment, since the heat of the piping of the boiler is used as a heat source, it is very preferable in terms of equipment costs.

[0039]

As described above, according to the present invention, since the guide rail heating means can eliminate water droplets on the guide rail and prevent freezing, an optimal rail state can always be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an elevator according to the present invention.

FIG. 2 is a flowchart showing an operation.

FIG. 3 is a schematic explanatory view in which a guide rail heating means is a heating element.

FIG. 4 is a schematic explanatory view in which a guide rail heating means is a combination of a heating element and a reflection plate.

FIG. 5 is a schematic explanatory view of a part of the guide rail heating means which is means for utilizing pipe heat of a boiler pipe.

[Explanation of symbols]

 5 Guide rail 15 Basket 21 Temperature detection sensor 23 Guide rail heating means

Claims (6)

[Claims] An elevator provided with a guide rail for guiding a car or a counterweight, a temperature detection sensor for detecting a temperature of the guide rail, and a rail temperature of the guide rail based on a detection signal from the temperature detection sensor. An elevator having a guide rail heating means for controlling heating in a temperature range. 2. The elevator according to claim 1, wherein a plurality of temperature detecting sensors and guide rail heating means are arranged along the guide rail, and control and manage the rail temperature for each rail area. 3. The elevator according to claim 1, wherein the guide rail heating means is a heating wire arranged along the guide rail. 4. The elevator according to claim 1, wherein the guide rail heating means uses irradiation heat from a heating element. 5. The guide rail heating means according to claim 1, wherein the guide rail heating means comprises a combination of a heating element and a reflector for reflecting heat from the heating element toward the guide rail. elevator. 6. The elevator according to claim 1, wherein the guide rail heating means is a pipe heat of a boiler pipe arranged along the guide rail.