JPH0710451A - Heating device for handrail of passenger conveyer - Google Patents

Abstract

PURPOSE:To uniformly heat several parts of a hand rail of an escalator or the like by providing a heating device for mending the hand rail, comprising an upper die, an intermediate die inserted below the inside of the hand rail, and a lower die, and by embedding a heating element in each of the dies. CONSTITUTION:A heating device is composed of an upper die 10 adapted to be pressed by an upper frame 11, an intermediate die 12 split into three pieces, and adapted to be fitted in a recess 10a formed in the upper die 10, and a lower die 13 adapted to be pressed by a lower frame 14. By fastening a fastener 18 threadedly engaged with flange-like end edge parts on left and right sides of the upper and lower frames 11, 14, the upper and lower frames vertically clamp therebetween a hand rail 9 through the intermediary of the dies 10, 12, 13. In thus formed hand rail heating device, electrical heaters 15, 16, 17 are embedded in the dies 10, 12, 13, respectively. Further, the heaters 15, 16, 17 are energized in a condition in which the hand rail 9 is clamped, and accordingly, several parts of the hand rails can be uniformly heated, thereby it is possible to mend the deformed or damaged hand rail 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for a passenger conveyor handrail used for repairing a handrail such as an escalator.

[0002]

2. Description of the Related Art A conventional heating device for a handrail is shown in FIG.
As shown in the overall perspective view of FIG.
The upper mold 1 pressed by and the recess 1 of the upper mold 1 divided into three
a middle mold 3 fitted in a and a lower mold 4 pressed by the lower frame 5.
And the upper heating element 6 provided between the upper mold 1 and the upper frame 2.
And a lower heating element 7 provided between the lower mold 4 and the lower frame 5.
And a fastener 8 for fastening the upper frame 2 and the lower frame 5, and by tightening the nut 8a of the fastener 8, the upper frame 2 and the lower frame 5 move the molds 1, 3, 4 The handrail 9 is configured so as to be able to be pinched from above and below. That is, the middle mold 3 is inserted inside the handrail 9 mounted on the lower mold 4, and the handrail 9 is moved to the upper mold 1.
When sandwiched between the middle mold 3 and the lower mold 4 from above and below, by tightening the nut 8a and applying a pressing force to the upper frame 2 and the lower frame 5, the handrail 9 is molded by the molds 1, 3 and 4. The handrail 9 can be fixed to a predetermined shape, and if the upper and lower heating elements 6 and 7 are heated while the mold is clamped in this way, the deformation and damage of the handrail 9 can be repaired.

As a known reference example of this type of heating device, there is the one described in JP-A-63-147795.

[0004]

By the way, the above-mentioned conventional heating device has a structure in which the heat of the upper heating element 6 and the heat of the lower heating element 7 are conducted to the handrail 9 through the molds 1, 3, and 4. However, the upper heating element 6 arranged on the upper part of the upper mold 1 and the lower heating element 7 arranged on the bottom part of the lower mold 4
With, it is not possible to heat each part of the curved handrail 9 evenly and quickly, for example, the inside of the handrail 9 is less likely to be heated than other places, so complicated temperature control is forced during heating, The heating time also had to be set long.

Therefore, an object of the present invention is to solve the problems of the prior art and to provide a heating device for a handrail of a passenger conveyor, which can uniformly heat each part of the handrail and shorten the heating time. It is in.

[0006]

The above-described object of the present invention is to provide an upper die pressed by an upper frame, a middle die fitted to the upper die and inserted into the inside of a handrail, and a lower frame. A lower die which is pressed by a heating element and a heating element for heating these dies, and the upper and middle dies sandwich the handrail from above and below with the upper frame and the lower frame. In a heating device for a handrail of a passenger conveyor that presses and heats the heating element to heat the handrail, it is achieved by embedding the heating element in each of the upper mold, the middle mold, and the lower mold. It

[0007]

According to the above means, since the respective heating elements can be arranged along the curved shape of the handrail, the handrail can be uniformly heated without unevenness.
Since the heating elements embedded in the upper mold, the middle mold, and the lower mold are located near the handrails, the handrails can be quickly heated.

[0008]

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

FIG. 1 is a cross-sectional view of the handrail heating device according to the embodiment when it is used, and reference numeral 9 indicates the handrail.

The heating device shown in FIG. 1 includes an upper die 10 which is pressed by an upper frame 11 and a recess 10a of the upper die 10 which is divided into three parts.
The middle die 12 fitted inside, the lower die 13 pressed by the lower frame 14, and the electric heater 15 embedded in two places of the upper die 10.
An electric heater 16 embedded in the middle mold 12, and a lower mold 13
It is equipped with an electric heater 17 buried in three places and a fastener 18 for fastening the upper frame 11 and the lower frame 14. By tightening a nut 18a of the fastener 18, the upper frame 11 and the lower frame 14 are tightened. The frame 14 is configured to be able to clamp the handrail 9 from above and below via the molds 10, 12, and 13. That is, if the middle die 12 is inserted inside the handrail 9 mounted on the lower die 13 and the handrail 9 is sandwiched between the upper die 10 and the middle die 12 and the lower die 13 from above and below, the nut 18a is tightened. By applying a pressing force to the upper frame 11 and the lower frame 14, the handrail 9 can be clamped into a predetermined shape by the molds 10, 12 and 13, and each electric heater can be clamped in this manner. By heating 15, 16, and 17, heat and deformation of the handrail 9 can be repaired.

The electrothermal heaters 15, 16 and 17 embedded in the molds 10, 12 and 13 at a total of 6 locations are located near the handrail 9, and the electrothermal heaters 15, 16 and 17, respectively. Since 17 is arranged along the curved shape of the handrail 9, this heating device can heat the handrail 9 quickly and evenly. That is, the electric heaters 1 embedded in a total of 6 places
5, 16 and 17 are arranged close to different parts of the handrail 9, respectively, and it is possible to specify an electric heater that heats an arbitrary part of the handrail 9 particularly strongly. Therefore, each electric heater 15, If each of the parts 16 and 17 is set to an appropriate temperature, each part of the handrail 9 can be heated uniformly, the temperature can be easily controlled, and the heating work can be efficiently performed in a short time.

Since the electric heaters 15, 16 and 17 are composed of separate parts, they can be individually repaired or replaced with new ones in case of failure or damage.

[0013]

As described above, in the handrail heating device according to the present invention, the heating elements embedded in the upper mold, the middle mold, and the lower mold are arranged along the curved shape of the handrail. Since it can be placed in the vicinity,
It is possible to uniformly heat each part of the handrail, shorten the heating time, and easily control the temperature during heating.

[Brief description of drawings]

FIG. 1 is a sectional view of a heating device for a handrail according to an embodiment of the present invention when in use.

FIG. 2 is an overall perspective view of a conventional example.

FIG. 3 is a sectional view of the conventional example.

[Explanation of symbols]

 9 Handrail 10 Upper mold 11 Upper frame 12 Medium size 13 Lower mold 14 Lower frame 15, 16, 17 Electric heater 18 Fastener

Claims (1)

[Claims] 1. An upper die pressed by an upper frame, a middle die fitted to the upper die and inserted inside a handrail, a lower die pressed by a lower frame, and these die. A heating element for heating is provided, the hand rail is sandwiched between the upper and middle dies and the lower die from above and below, and pressure is applied by the upper frame and the lower frame, and the heating element is caused to generate heat, and the hand is heated. A heating device for a handrail of a passenger conveyor for heating a rail, wherein the heating element is embedded in each of the upper mold, the middle mold, and the lower mold.