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Elevator main rope elongation compensating apparatus

A compensating device and elevator technology, applied in elevators, lifting equipment in mines, transportation and packaging, etc., can solve the problem of time-consuming measurement and adjustment work

Inactive Publication Date: 2007-03-14
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, with these methods, maintenance personnel are required to measure the change in the position of the counterweight due to the elongation of the main rope and to enter the elevator shaft to adjust the height dimension of the counterweight, which makes the measurement and adjustment work time-consuming.

Method used

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  • Elevator main rope elongation compensating apparatus
  • Elevator main rope elongation compensating apparatus
  • Elevator main rope elongation compensating apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Fig. 1 is a general schematic diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In this figure, a hoist 2 and a deflecting pulley 3 are arranged in the upper part of an elevator shaft 1. The hoist 2 has a driving pulley 2a. A plurality of main ropes 4 pass around the driving pulley 2a and the deflection pulley 3.

[0026] At the first end of the main rope 4, an elevator car 5 is suspended. A counterweight 6 is hung on the second end of the main rope 4. An extension part 7 of a main rope elongation compensation device for compensating for the main rope elongation is installed to the lower part of the counterweight 6. The extension part 7 protrudes downward from the lower part of the counterweight 6.

[0027] An elevator car buffer 8 is installed under the elevator car 5 at the bottom of the elevator shaft 1. A counterweight buffer 9 and a protective screen 10 are installed in the lower part of the elevator shaft 1 under the counterweig...

Embodiment 2

[0042]Fig. 5 is a partial cross-sectional view showing a partial cross-sectional view of an elevator main rope extension compensation device according to Embodiment 2 of the present invention; Fig. 6 is a partial cross-sectional view taken along the line "VI-VI" of Fig. 5; and 7 is an enlarged cross-sectional view showing a part of FIG. 5.

[0043] In these figures, the extension 7 also includes compression springs 22, each of which functions as a pressure-applying structure that forces a movable partition to move to a non-contact position. The compression spring 22 is provided between the first support bracket 12 and the movable partition 15. The compression spring 22 is a coil spring, and the guide rod 14 is inserted and passed through the inside thereof. When the locked state held by a contact position locking mechanism 21 is released, the corresponding movable partition 15 is pressurized by the compression spring 22 and automatically moves to the non-contact position.

[0044]...

Embodiment 3

[0052] Fig. 8 is a cross-sectional view showing a part of a main rope elongation compensation device according to Embodiment 3 of the present invention. In this figure, a detection switch 28 as a part of a lock release detector is mounted on the mounting member 23. When the release lever 25 is pivoted to the second position (two-dot chain line in the figure), the detection switch 28 is driven to output a detection signal. Here, a micro switch is used as the detection switch 28.

[0053] A main rope elongation compensation device according to Embodiment 3 includes an extension part 7, a lock release mechanism 27 and a detection switch 28. The rest of the lock release mechanism is similar to that of the second embodiment.

[0054] In this type of main rope extension compensation device, when the release lever 25 is pivoted from the first position to the second position, the detection switch 28 is driven to output a detection signal. Therefore, the locked state held by a contact posi...

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Abstract

In an elevator main rope elongation compensating apparatus, an extension portion is mounted to a lower portion of a counterweight. The extension portion projects downward from the lower portion of the counterweight. The extension portion includes one or more movable spacers. Each of the movable spacers is movable between a contact position directly above a counterweight buffer and a non-contact position outside a region directly above the counterweight buffer. A counterweight overtravel space is adjusted by moving the movable spacers to the non-contact position.

Description

Technical field [0001] The present invention relates to a main rope elongation compensating device provided in a hoistway. In a hoistway of the hoistway, an elevator car and a counterweight are suspended by a main rope. The main rope The elongation compensation device is used to compensate the elongation of the main rope. Background technique [0002] Generally, when installing an elevator device, the main rope requires time to stretch and stabilize the load of an elevator car and a counterweight. In other words, immediately after installation, the initial elongation occurs in the main rope. In addition, a distance is reserved for the elongation of the main rope in an elevator shaft. [0003] To solve this problem, a pre-tensioned rope is generally known in which an initial elongation is forced by applying a force load before installation. The use of this type of pre-tensioned rope reduces the initial elongation immediately after installation. [0004] Another method is to use a ...

Claims

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Application Information

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IPC IPC(8): B66B11/00B66B5/28B66B7/06B66B17/12
CPCB66B7/06B66B17/12B66B5/0056
Inventor A·布劳沃尔斯W·肯皮斯
Owner MITSUBISHI ELECTRIC CORP
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