WO2020060270A1

WO2020060270A1 - Hanging sheave applied to 2:1 rope coupling method for elevator

Info

Publication number: WO2020060270A1
Application number: PCT/KR2019/012211
Authority: WO
Inventors: 전병수
Original assignee: 전병수
Priority date: 2018-09-21
Filing date: 2019-09-20
Publication date: 2020-03-26
Also published as: CN113165842A; CN113165842B; KR102092078B1

Abstract

The present invention provides a hanging sheave applied to a 2:1 rope coupling method for an elevator, the hanging sheave comprising: a mounting shaft provided to enable respective ropes to freely move as much as a tension change amount of the respective ropes according to the tension change amount of the respective ropes in a state where the respective ropes are wound around the hanging sheave; and multiple division sheaves rotatably provided on the mounting shaft and having respective sheave grooves formed to allow the respective ropes to be wound thereat, so as to enable the respective wound ropes to freely move according to the tension change amount of the respective ropes. Accordingly, the present invention not only can prevent a rope from being broken in a 2:1 rope coupling method for an elevator, but also can stably lift a car and secure a long period of use.

Description

Suspension sheave applied to 2: 1 rope fastening method for elevators

The present invention relates to a suspension sheave that is provided on the upper part of the car and the upper part of the elevator, and more specifically, the movement of each rope by the amount of tensile change according to the tensile change amount of each rope while each rope is wound on the suspension sheave. It relates to a suspension sheave applied to a 2: 1 rope fastening method for an elevator so that this can be made freely.

In general, an elevator is a type of transportation that quickly and smoothly moves passengers between floors by vertically elevating a car installed on a hoistway inside a structure by driving a hoisting machine.

In this way, in order to elevate the car of the elevator, a plurality of ropes are connected and elevated by various methods based on a hoisting machine as a driving means, and an embodiment in which a 2: 1 rope fastening method is applied herein is applied.

The 2: 1 rope fastening method in an elevator means a drive sheave 110 rotated by a hoisting machine 100 and a plurality of ropes wound around the drive sheave 110 for lifting as shown in FIG. 7. (R), one end of the rope based on the driving sheave 110 is connected to a known tension control means 120 and wound around the car sheave 130 located on the top of the car 132, the The other end is connected to a known tension control means (120A) has a technical configuration that is connected to wind on the weight sheave 140 located on the upper portion of the weight (142).

Each of the sheave grooves and the sheave and weight sheaves are integrally formed with respective sheave grooves in which a plurality of ropes are wound.

The passive sheave 130 and the weight sheave 140 are defined as "hanging sheave 1" in the elevator glossary.

As the weight of the car is raised or lowered by driving of the driving sheave, the lifting and lowering of the car as well as the lifting sheaves and the weight sheaves are suspended as the car is lowered or raised.

Here, the rope section (hereinafter referred to as 'A section') connected between the tension adjusting means and the cassive, and the rope section (hereinafter referred to as 'B section') connected between the weight sheave and the tension adjusting means are each tension. A section capable of adjusting the tension of the rope can be secured by the adjusting means.

However, the rope section between the car sheave and the drive sheave (hereinafter referred to as the 'C section') and the rope section between the drive sheave and the weight sheave (hereinafter referred to as the 'D section') are sections in which tension cannot be adjusted.

In other words, the tension of the ropes located in the C section as well as the D section is not adjusted in the drive sheave, as well as the car sheave and the weight sheave, as each sheave groove in which a plurality of ropes are wound is integrally formed.

This means that if any one of the ropes is shortened or stretched, or if one or more of the sheave grooves in the drive sheave occurs, the sheave, which is the suspension sheave in which each rope is wound, as well as the weight sheave, is the sheave in which the rope is wound. It should be slipped from the groove, but due to the integral formation, the rope cannot work independently in the intended direction.

As a result, the rope in the 2: 1 rope fastening method not only provides a cause for the breakage, but also frequently breaks.

As described above, the prior art related to the elevator driving sheave, the casing, or the weight sheave is the number of ropes as disclosed in Korean Utility Model Publication No. 20-2000-0017773 (hereinafter referred to as 'prior art document 1'). And it has been proposed a technique related to the hoisting sheave of an elevator including a plurality of pulley parts and a fixing means for fixing the plurality of pulley parts so as to be applicable to various types.

In addition, as disclosed in Korean Patent Publication No. 10-2007-0039054 (hereinafter referred to as 'Prior Art Document 2'), tension is connected to the drive rope to reduce vibration transmitted to the car by the driving device. Technology such as an elevator device including a device has also been proposed.

In addition, as published in the Republic of Korea Patent Publication No. 10-0865653 (hereinafter referred to as 'prior art document 3') as a roller structure for lifting the elevator elevator, suitable for use with an elevator system without an engine compartment In addition, technologies such as elevators and pulley assemblies for elevators have been proposed to minimize installation space.

[Patent Document]

(Patent Document 1) Republic of Korea Utility Model Publication No. 20-2000-0017773

(Patent Document 2) Republic of Korea Patent Publication No. 10-2007-0039054

(Patent Document 3) Korean Patent Registration No. 10-0865653

However, in the prior art documents 1 to 2, as described in the background technology of the present invention, each of the sheave grooves formed on the hanging sheave in which a plurality of ropes are wound has an integral problem, and thus has a problem as a result.

Prior art document 3 is used by arranging a belt instead of a rope, but it also has a disadvantage of not individually controlling the tension of the roller structure.

The specific technical problem of the present invention for solving the above-mentioned general problems is that each rope can be freely moved by the amount of tensile change according to the tensile change amount of each rope while each rope is wound on the hanging sieve. It is to provide a suspension sheave applied to a 2: 1 rope fastening method for an elevator.

Another specific technical problem of the present invention is to provide various embodiments that allow the movement of each rope of the hanging sheave to be freely made depending on the application.

A specific technical solution of the present invention for solving the above technical problems is a suspension sheave in which each rope to which a 2: 1 rope fastening method is applied is wound for lifting a car in an elevator, wherein the suspension sheave is a mounting shaft; And a plurality of divided sheaves in which the respective sheave grooves in which each rope is wound are formed on the mounting shaft and are rotatably provided so that the movement of each rope is free according to the tensile change amount of each wound rope.

Rotation of each divided sieve on the mounting shaft is formed by a fastening flange on one surface and rotatably provided on the mounting shaft, a fixed sieve fixed to the fastening flange and rotated together with the rotating body, the rotating body It includes a plurality of split sheaves that are rotatably provided on the fixed flange that is fastened and fixed to the rotating body to prevent the separation sheaves from being detached from the other end of the rotating body on which the fastening flange is formed.

Each bushing further includes interposing a bushing for preventing interference between the split sheaves.

The rotation of each split sheave on the mounting shaft is a plurality of split sheaves rotatably provided on the mounting shaft, and each split sheave fixed to each fixing plate rotatably provided on a mounting shaft on both sides of the plurality of split sheaves. It includes.

The divided sheave fixed to each fixed plate is inserted into the shaft portion formed in the fixed plate and fixed to the fixed plate by a plurality of fasteners.

The rotation of each split sheave on the mounting shaft is rotatably provided on the mounting shaft, one split sheave fastened to the mounting flange of the drum housing, and a plurality of rotatably provided on the drum housing The separation sheave and the other end of the drum housing on which the mounting flange is formed include an anti-separation plate fixed to the drum housing to prevent separation of the division sheave.

The drum housing includes an insertion tube portion rotatably formed on a mounting shaft, a side surface integrally connected to one surface of the insertion tube portion, and a mounting pipe portion integrally connected to the side surface and coupled to the divided sheave.

The present invention allows the movement of each rope to be free as much as the tensile change amount according to the tensile change amount of each rope in the state where each rope is wound on the hanging sieve, thereby breaking the rope in the 2: 1 rope fastening method for elevators. Not only can it be prevented, it also has the effect of stably elevating the car and securing a long service life.

In addition, the replacement cost due to rope breakage is significantly reduced, which has a side effect of excellent economic efficiency.

In addition, by allowing the movement of each rope of the suspension sheave according to the application to be made freely, it also has the effect of selectively using an appropriate suspension sheave according to the purpose of use.

1 is an exploded perspective view for explaining a first embodiment of the present invention,

Figure 2 is an exploded cross-sectional view and a combined cross-sectional view according to Figure 1,

3 is an exploded perspective view for explaining a second embodiment of the present invention,

Figure 4 is an exploded cross-sectional view and a combined cross-sectional view according to Figure 3,

5 is an exploded perspective view for explaining a third embodiment of the present invention,

Figure 6 is an exploded cross-sectional view and a combined cross-sectional view according to Figure 5,

7 is a conceptual diagram for explaining an elevator to which a conventional 2: 1 rope fastening method is applied.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The present invention is not limited or limited by the embodiments.

1 is an exploded perspective view for explaining a first embodiment of the present invention, and FIG. 2 is an exploded cross-sectional view and a combined cross-sectional view according to FIG. 1.

As shown in FIG. 7, a 2: 1 rope fastening method in an elevator is commonly referred to as a driving sheave 110 rotated by a hoisting machine 100 and wound for lifting on the driving sheave 110. A plurality of ropes (R) and one end of the rope based on the driving sheave 110 are connected to a known tension control means 120 and wound around a car sheave 130 located above the car 132. , The other end of the rope has a technical configuration that is connected to a known tension control means (120A) to be wound around the weight sheave 140 located on the top of the weight (142).

Here, the casing 130 and the weight sheave 140 are defined as "hanging sheave (1)" in the elevator glossary.

However, as described above, the rope section between the cascade and the drive sheave (hereinafter referred to as the 'C section') and the rope section between the drive sheave and the weight sheave, as described in the background art of the invention, between the suspension sheave and the drive sheave, as described above. (Hereinafter referred to as 'D section') is a section in which the tension cannot be adjusted.

The present invention is to allow the movement of each rope to be free as much as the tensile change amount according to the tensile change amount of each rope in a state where each rope is wound on the hanging sieve.

For lifting the car 132 of the elevator according to the present invention, the hanging sieve 1 to which each rope R to which a 2: 1 rope fastening method is applied is wound is mounted shaft 10; And each sheave groove 1a in which each rope R is wound on the mounting shaft 10 is rotatable so that the movement of each rope R is free according to the tensile change amount of each wound rope R And a plurality of divided sheaves 1A.

The mounting shaft 10 is mounted on the top of the car 132 or the weight 142 by a conventional bracket or frame.

A plurality of split sheaves (1A) is a conventional pulley form, can be appropriately selected and applied according to the number of ropes.

And the rotation of each split sheave 1A on the mounting shaft 10, which is the first embodiment of the present invention, is provided with a fastening flange 22 formed on one surface so as to be rotatable by a conventional bearing or the like on the mounting shaft 10 On the rotating body 20, the fastening flange 22 is fastened and fixed by a conventional bolt or the like, and one split sheave 1A rotated with the rotating body 20, and on the rotating body 20 In order to prevent the separation sheave 1A from being detached from the other end of the rotational body 20 on which the plurality of split sheaves 1A and the fastening flange 22 are rotatably provided by a conventional bearing or the like, the rotating body ( 20) includes a fixing flange 24 that is fastened and fixed by screws or bolts.

In addition, each of the divided sheaves (1A) further includes that each of the bushing (bushing, 26) in the form of a conventional disk for preventing interference between the divided sheave (1A).

In addition, a conventional snap ring 12 for preventing flow is fixedly coupled to both mounting shafts 10 of the split sheave 1A.

In the above, the state in which the fixing flange is fixed to the rotating body is a conventional circular bobbin shape.

Accordingly, when the rope wound around the rotating body and one split sheave fastened to the rotating body on the mounting shaft or the rope wound around the plurality of split sheaves rotatably provided in the rotating body is reduced or stretched, or in each of the sheave grooves in the driving sheave Even if a wear abrasion occurs in any one or more of the tension changes, the ropes operate independently in the direction in which the ropes are to operate as the divided sheaves wound by each rope have a condition that can be individually rotated.

Therefore, there is a condition that can prevent the rope of the section C or the rope of the section D located on both sides of the drive sheave to break.

This not only reduces the cost of replacement due to the breaking of the rope, but also reduces the related costs associated with it, and in particular, the car can be raised more and more stably, ensuring passenger safety and long-term use. The period can also be secured.

Moreover, the present invention can be easily applied to an existing elevator as it can be realized by a simple technical configuration rather than a complicated technical configuration.

3 is an exploded perspective view for explaining a second embodiment of the present invention, and FIG. 4 is an exploded cross-sectional view and a combined cross-sectional view according to FIG. 3.

In the above-described technical configuration as shown, another technical configuration in which a plurality of split sheaves on the mounting shaft are rotated will be described. It has a technical configuration suitable for high loads.

The rotation of each split sheave 1A on the mounting shaft 10 is a plurality of split sheaves 1A rotatably provided on the mounting shaft 10 by a conventional bearing or the like, and the plurality of split sheaves 1A On each side of the mounting shaft 10, each of the divided sheaves 1A is fixed to each fixed plate 30 that is rotatably provided by a conventional bearing or the like.

In the above, the divided sieve 1A fixed to each fixing plate 30 is inserted into the shaft portion 32 formed in the fixing plate 30 and fixed by a fastener 34 such as a plurality of bolts or screws. It is fixed to the plate 30.

This, the second embodiment is not only excellent in assembling performance as compared to the first embodiment described above, but also has conditions suitable for high loads.

That is, after a plurality of split sheaves are located on the mounting shaft to be rotatably coupled to each other, and then to each of the fixed plates to which each split sheave is fixed on both sides to be rotatable on the mounting shaft, assembly is easily completed in a short time. Can be.

In particular, as multiple split sheaves are arranged in the middle of the mounting shaft, it is possible to have a high response force even under high load.

As the second embodiment of the present invention also has the same action as the first embodiment, detailed description thereof will be omitted.

5 is an exploded perspective view for explaining a third embodiment of the present invention, and FIG. 6 is an exploded cross-sectional view and a combined cross-sectional view according to FIG. 5.

In the above-described technical configuration as shown, another technical configuration in which a plurality of split sheaves on the mounting shaft are rotated will be described.

It has a technical configuration suitable for high-speed rotation.

The rotation of each divided sieve 1A on the mounting shaft 10 is a drum housing 40 manufactured by a conventional molding method or press processing or the like provided rotatably on a mounting shaft 10 by a conventional bearing or the like. , One split sheave (1A) fastened and fixed to the mounting flange (42) of the drum housing (40) by a bolt or the like, and rotatable by a common bearing or the like on the drum housing (40) To prevent the separation of the split sheave 1A on the other end of the drum housing 40 on which the plurality of split sheaves 1A and the mounting flange 42 are formed, screws or bolts common to the drum housing 40 are provided. It includes a departure prevention plate 44 fixed by, for example.

The drum housing 40 includes an insertion tube portion 40A rotatably formed on a mounting shaft 10, and a side surface 40B and the side surface 40B integrally connected with one surface of the insertion tube portion 40A. It is integrally connected and includes a mounting pipe portion 40C to which the split sheave 1A is coupled.

In the above, the divided sieve 1A is formed in a conventional ring shape mounted on the mounting pipe portion 40C of the drum housing 40.

In addition, there is a condition that the weight can be reduced by the space formed between the insertion tube portion and the mounting tube portion.

Accordingly, the lightweight drum housing can be rotated at a high speed by a rope, and the divided sheaves rotatably provided in the drum housing operate independently when the transport gap of the rope occurs.

As the third embodiment of the present invention also has the same action as the first embodiment, detailed description thereof is omitted.

Claims

As a suspension sheave in which each rope to which a 2: 1 rope fastening method is applied is wound for elevator car lifting,

The hanging sheave comprises a mounting shaft; And

It comprises a plurality of divided sheaves that are rotatably provided so that the movement of each rope is free according to the tension change amount of each rope in which the respective sheave grooves in which each rope is wound are formed on the mounting shaft.

Rotation of each divided sieve on the mounting shaft is formed by a fastening flange on one surface and rotatably provided on the mounting shaft, a fixed sieve fixed to the fastening flange and rotated together with the rotating body, the rotating body A 2: 1 rope fastening for an elevator including a plurality of split sheaves rotatably provided on the upper end and a fixing flange fastened to the rotating body to prevent the split sheave from being detached from the other end of the rotating body on which the fastening flange is formed. Hanging sieves applied to the system.
According to claim 1,

A suspension sheave applied to a 2: 1 rope fastening method for elevators further comprising interposing each bushing to prevent interference between the split sheaves.
As a suspension sheave in which each rope to which a 2: 1 rope fastening method is applied is wound for elevator car lifting,

The hanging sheave comprises a mounting shaft; And

It comprises a plurality of divided sheaves that are rotatably provided so that the movement of each rope is free according to the tension change amount of each rope in which the respective sheave grooves in which each rope is wound are formed on the mounting shaft.

The rotation of each split sheave on the mounting shaft is a plurality of split sheaves rotatably provided on the mounting shaft, and each split sheave fixed to each fixing plate rotatably provided on a mounting shaft on both sides of the plurality of split sheaves. Hanging sheave applied to a 2: 1 rope fastening method for elevators comprising a.
According to claim 3,

The divided sheave fixed to each fixed plate is a suspension sheave applied to a 2: 1 rope fastening method for an elevator fixed to a fixed plate by a plurality of fasteners after being inserted into a shaft portion formed in the fixed plate.
As a suspension sheave in which each rope to which a 2: 1 rope fastening method is applied is wound for elevator car lifting,

The hanging sheave comprises a mounting shaft; And

It comprises a plurality of divided sheaves that are rotatably provided so that the movement of each rope is free according to the tensile change amount of each of the ropes formed by forming each sheave groove on which each rope is wound on the mounting shaft.

The rotation of each split sheave on the mounting shaft is rotatably provided on the mounting shaft, one split sheave fastened to the mounting flange of the drum housing, and a plurality of rotatably provided on the drum housing A suspension sheave applied to a 2: 1 rope fastening method for an elevator, including a separation sheave and a release prevention plate fixed to the drum housing to prevent the separation sheave from being detached from the other end of the drum housing on which the mounting flange is formed.
The method of claim 5,

The drum housing is for an elevator comprising an insertion tube portion rotatably formed on a mounting shaft, a side surface integrally connected to one surface of the insertion tube portion, and a mounting pipe portion integrally connected to the side surface and coupled to the divided sheave. 1 Hanging sheave applied to the rope fastening method.