JP2009263114A - Asbestos processing method in elevator shaft - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save the labor of an asbestos processing method itself, and to shorten a construction period without completely stopping an elevator, concerning an asbestos processing in an elevator shaft. <P>SOLUTION: In the asbestos processing method to an existing asbestos structure in the elevator shaft, a work stage 15 is provided on an upper part 14 of an elevator car 3, and a partitioning means 19 partitioning a shaft to be processed is provided. A worker is enabled to get on the stage, and an elevator car is intermittently elevated. A step carrying out the asbestos processing to the asbestos structure in an elevator hoistway at stopping is included. The partitioning means includes a security zone 21 provided at least one of elevator doorways on each floor F corresponding to the elevator hoistway 4 carrying out the asbestos processing, a negative pressure dust removing machine 25 provided on at least one floor so as to communicate to the elevator hoistway, and a seal-up means sealing up the surroundings of the elevator shaft. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an asbestos treatment method for an existing asbestos structure that is constructed by spraying or the like in an elevator shaft in an elevator system for the purpose of improving heat insulation and fire resistance, and particularly in an elevator shaft. The present invention relates to an asbestos removal processing method and an asbestos containment processing method configured to reliably prevent the scattering of asbestos dust.

  As is well known, an elevator shaft in an elevator system includes an elevator hoistway in which an elevator car moves up and down, and a machine room that houses a hoisting machine and a control panel that drive the elevator car up and down. In this elevator shaft, asbestos material has been frequently used as a building material for improving heat insulation, fire resistance and sound absorption. In particular, for existing building materials containing asbestos fibers that have been widely used in the past, the asbestos fibers in the building materials are pulverized and scattered due to high-speed airflow and high-speed turbulence in the hoistway associated with higher speed elevators. There are many evils. Asbestos that has been pulverized and scattered has been pointed out to be very harmful due to its intrusion into the human body. It has been pointed out as a very large social problem, and asbestos treatment in existing elevator systems and the like has been raised as an urgent issue.

  In elevators used by an unspecified number of people, measures for treating asbestos in the hoistway and in the machine room are urgently desired. However, due to the particularity of the elevator system, asbestos treatment with the currently operating elevator completely stopped is extremely unrealistic. For this reason, at present, development of an effective construction method for asbestos treatment in the elevator hoistway in the elevator system has not been made.

  Therefore, the present invention enables extremely safe construction against asbestos treatment in the elevator hoistway and in the machine room in the elevator system, and completely stops the elevator regardless of the particularity in the elevator hoistway. In addition, it is possible to perform construction with a part in operation, and furthermore, it is possible to save labor and shorten the construction period of the asbestos treatment method itself and to perform asbestos treatment with extremely high reliability. And providing an asbestos treatment method in an elevator shaft.

In order to achieve the above-mentioned object, the invention according to claim 1 is directed to removing or containing asbestos from an existing asbestos structure in an elevator shaft (including an elevator hoistway and a machine room). An asbestos treatment method in an elevator shaft,
Providing a work stage for an asbestos operator to board outside the ceiling side of the elevator car;
Providing an isolation means for isolating an elevator shaft that performs asbestos treatment;
An asbestos treatment worker is mounted on the work stage, the elevator car is lifted and stopped intermittently, and an asbestos treatment process is performed on the asbestos structure in the elevator hoistway when stopped.
A security zone provided in at least one elevator entrance / exit on each floor corresponding to an elevator hoistway for performing asbestos treatment, and a negative pressure provided on at least one floor so as to communicate with the elevator hoistway. The asbestos treatment method in an elevator shaft comprises a dust remover and a weathering means for weathering the periphery of the elevator shaft.

  Furthermore, in this invention, the invention according to claim 2 is the asbestos treatment method in the elevator shaft according to claim 1, wherein the work stage is installed outside the ceiling side of the elevator car. It is assembled in a suspended manner with respect to the beam, is configured so as not to apply a load to the car ceiling, and is provided with a balance maintaining means when the operator is on board.

  Further, in the present invention, the invention according to claim 3 is the asbestos treatment method in the elevator shaft according to claim 1 or 2, wherein the operator is protected from the counterweight against the work stage. It is characterized by providing protective means.

  Furthermore, in this invention, invention of Claim 4 is the asbestos processing method in the elevator shaft in any one of Claims 1-3, Comprising: The said security zone is based on a changing room and an air shower. It consists of three rooms, a washing room and an anterior room, or two rooms, a changing room and an anterior room.

  Further, in this invention, the invention according to claim 5 is the asbestos treatment method in an elevator shaft according to any one of claims 1 to 4, wherein the separating means is a hoisting machine in a machine room. It is characterized by comprising an isolation cover means for covering.

  Furthermore, in this invention, the invention according to claim 6 is the asbestos treatment method in the elevator shaft according to any one of claims 1 to 5, wherein the plurality of elevator cars are individually moved up and down. In the elevator system arranged side by side, when asbestos processing is performed on the hoistway of another elevator while operating some elevators, the separating means separates the asbestos processing work section from the elevator operating section. It consists of what contains the partition means extended in a direction, It is characterized by the above-mentioned.

Furthermore, in the present invention, the invention according to claim 7 is an asbestos treatment method in an elevator shaft that encloses asbestos to an existing asbestos structure in an elevator hoistway,
Providing a work stage for an asbestos operator to board outside the ceiling side of the elevator car;
Providing an isolation means for isolating an elevator shaft that performs asbestos treatment;
An asbestos treatment worker is mounted on the work stage, the elevator car is intermittently raised and lowered, and the first asbestos treatment agent having high permeability is applied to the asbestos structure in the elevator hoistway when stopped. Or an asbestos containment treatment step of covering the asbestos structure by enclosing the asbestos structure by spraying and applying a second asbestos treatment agent having a high sealing property to the inside of the asbestos structure. Consists of
A security zone provided in at least one elevator entrance / exit on each floor corresponding to an elevator hoistway for performing asbestos treatment, and a negative pressure provided on at least one floor so as to communicate with the elevator hoistway. The asbestos treatment method in an elevator shaft comprises a dust remover and a weathering means for weathering the periphery of the elevator shaft.

Furthermore, in this invention, the invention according to claim 8 is the asbestos treatment method in an elevator shaft according to claim 7, wherein the first asbestos treatment agent is mainly composed of metal hydroxide and / or Alternatively, it is a highly permeable asbestos treatment agent formed by mixing a metal salt of a strong base and a weak acid, a natural paste or resin binder, and water,
The second asbestos treating agent is mainly a sealing property formed by mixing a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or resin binder, an aggregate, and water. It is characterized by being a high asbestos treatment agent.

Furthermore, in this invention, the invention according to claim 9 is the asbestos treatment method in an elevator shaft according to claim 7 or claim 8, wherein the first asbestos treatment agent is 0.1-2. Permeation formed by mixing weight% metal hydroxide and / or metal salt of strong base and weak acid, 0.5 to 20 weight% natural glue or resin binder, and 78 to 99 weight% water. A highly asbestos treatment agent,
The second asbestos treating agent comprises 20 to 50% by weight metal hydroxide and / or strong base and weak acid metal salt, 0.5 to 10% by weight natural glue or resin binder, It is characterized by being an asbestos treatment agent having a high sealing property formed by mixing 10% by weight of aggregate and 25 to 75% by weight of water.

  Furthermore, in this invention, invention of Claim 10 is the asbestos processing method in the elevator shaft in any one of Claims 7-9, Comprising: In said 2nd asbestos processing agent, 0. It is characterized by being mixed with 01 to 5% by weight of organic or inorganic short fibers and / or long fibers.

  According to the asbestos treatment method in the elevator shaft of the present invention configured as described above, the treatment of asbestos that has already been installed by simply spraying the highly specific part in the elevator hoistway in the elevator system It provides a method for removing asbestos and a method for containing it in an extremely safe state. In particular, it is a perfect construction of the isolation means for the asbestos treatment work site. As a result of this, it is possible to improve safety, and further, some elevators can be installed in a state in which they are in operation without completely stopping the elevator. It works extremely effectively in terms of saving labor and shortening the construction period. It can be said that.

  Furthermore, in the asbestos containment processing method according to another configuration example of the present invention, the first asbestos treatment agent having high permeability is first applied to the asbestos structure in the elevator machine room and the elevator hoistway. Alternatively, the asbestos structure is infiltrated into the inside of the asbestos structure by spraying, and then, a second asbestos treating agent having a high sealing property mainly composed of lime is sprayed to seal the asbestos fibers, and the aging is caused by the action of carbon dioxide gas. It can be said that it works extremely effectively in that it can be converted into limestone and enables the asbestos treatment, which is extremely safe for workers, to the surrounding environment.

Hereinafter, the asbestos processing method in the elevator shaft which becomes this invention is demonstrated in detail based on the specific Example shown in drawing.
FIG. 1 shows an example of an elevator system to which the present invention is applied, and is a schematic side sectional view showing a middle floor in a broken state. FIG. 2 is an elevator system in which two units are arranged side by side. It is a schematic plan view sectional view showing an example. FIG. 3 shows an example of an elevator system according to the application of the present invention. FIG. 3A is a schematic sectional side view of the upper floor portion, and FIG. 3B is continuous with the lower end side of FIG. 3A. It is a schematic sectional side view of the lower floor part.

  On the other hand, FIG. 4 is a schematic plan sectional view showing an example of a state in which a work stage (working scaffold) is provided outside the elevator car on the ceiling side. FIG. 5 shows an example of a construction procedure for asbestos treatment in an elevator hoistway in an elevator system in which four units are arranged in order from the first to the fourth unit from the left. Is a schematic cross-sectional plan view showing a situation where a work stage is installed on the second and third elevator cars and a partition wall is constructed between the left two and the right two; Fig. 5B shows the dismantling of the work stage on the third elevator car, installation of the work stage on the first elevator car, and the left two as the first work section, asbestos processing work in the elevator hoistway FIG. 5C is a schematic cross-sectional plan view showing a situation in which the work stages on the first and second elevator cars are disassembled so that the elevator can be operated, and the third and fourth elevator cars Work stage on Installed, the right second base as the second work area is a schematic plan cross-sectional view showing a situation of performing asbestos processing operations of the elevator shaft.

  Further, FIG. 6 shows, for example, an elevator system in which a plurality of elevators are arranged side by side, when asbestos processing work is performed in another elevator shaft in a state where some elevators are operated. FIG. 6A is a schematic front view showing an example of the partitioning means, and FIG. 6B shows the state of movement of the partitioning means to the installation section. FIG. 6C is a schematic perspective view, and FIG. 6C is a schematic perspective view showing an installed state. Further, FIG. 7 shows an installation example of a security zone composed of three chambers through which an operator passes when entering and exiting the work stage on the elevator car. FIG. 7A is a schematic plan sectional view thereof. FIG. 7B is a schematic side sectional view thereof.

  First, the structure of a rope type elevator as an example of the elevator system 1 in a building or the like will be described in detail based on the specific embodiments shown in FIGS. 1 and 2. This rope type elevator is composed of a machine room 2, an elevator car 3, a hoistway 4, a pit P, and landings N1 to Nn provided on each floor. In the machine room 2, a hoisting machine 5 driven by an electric motor and a control panel 6 for controlling the driving of the hoisting machine 5 are installed, and in addition, an electromagnetic brake, a speed governor, and the like are installed. . A rope 7 is hung on the hoisting machine 5, and one end 7 a of the rope 7 is connected to the elevator car upper beam 8 with respect to the elevator car 3, and the other end 7 b of the rope 7. Is connected to the counterweight 9.

  With respect to the elevator hoistway 4, the hoistway wall surface W of each floor F of the building is provided with a landing-side door 10, and the elevator car 3 is provided with a car-side door 11. A car buffer 12 for the elevator car 3 and a weight buffer 13 for the counterweight 9 are provided at a lower part (referred to as a pit P) of the lowermost floor of the elevator hoistway 4. The shock absorbers 12 and 13 are constituted by springs or hydraulic dampers. This shock absorber is also provided in an upper pit (not shown) on the uppermost floor of the elevator hoistway 4.

  The elevator system 1 configured as described above is configured by a single elevator, as illustrated in FIG. 2, as configured by two elevators, and as illustrated in FIG. 4. Any one of four elevators and a plurality of elevators may be used.

  The wall surface of the elevator machine room 2 and the wall surface of the elevator hoistway 4 in the elevator system 1 are constructed by a structure such as a metal beam structure, reinforced concrete, and the wall materials include heat insulation, fire resistance, and sound absorption. Asbestos materials are often used for the purpose of improving the properties.

  The asbestos material used for the inner wall of the elevator hoistway 4 is merely constructed by spraying, and in an elevator system that speeds up, it is caused by high-speed airflow and high-speed turbulence caused by high-speed movement of the elevator car. It was dusted and scattered, presenting a very dangerous situation for the human body.

  In the present invention, in the elevator system 1 described above, the asbestos blowing structure that has already been constructed is prevented from scattering asbestos, completely covering the asbestos, and finally, the asbestos is limestoned. The risk is completely wiped out.

Hereinafter, the work procedure for the asbestos treatment method in the elevator shaft according to the present invention will be described in detail based on the specific embodiments shown in the drawings.
The present invention is an asbestos treatment method in an elevator shaft that removes or contains asbestos from an existing asbestos structure in an elevator shaft (including an elevator hoistway and a machine room).

  The construction method includes a step of providing a work stage for an asbestos operator to board on the outside of the elevator car, a step of providing an isolation means for isolating an elevator shaft for performing asbestos treatment, and a step for asbestos on the work stage. And an asbestos treatment step in which an asbestos treatment is performed on the asbestos structure in the elevator hoistway when the elevator car is intermittently moved up and down and stopped intermittently.

  In the step of providing the work stage, a work stage 15 is provided on the upper outer side 14 on the ceiling side of the elevator car 3. This work stage 15 is a scaffold for work on which an operator who performs work for asbestos processing in the elevator hoistway 4 rides.

  The work stage 15 is assembled by appropriately combining conventional construction members that are well known. The most important point is that the work stage 15 is installed on the ceiling-side exterior 14 of the elevator car 3. The suspension is assembled to the upper beam 8 via a suspension member 15a so as not to apply a load to the car ceiling, and is provided with a balance maintaining means 17 when the operator gets on board It is made up of.

  The work stage 15 includes at least a plurality of handrail frames 16 for ensuring the safety of workers, and when working on an elevator hoistway on a higher floor, the use of a lifeline is also practiced. Yes. Further, protective means 18 for protecting the operator from the counterweight 9 is provided for the work stage 15.

  Next, the isolation means 19 for isolating the elevator shaft which performs asbestos processing is demonstrated. First, in the elevator system in which a plurality of elevator cars 3 are individually moved up and down, the first separating means 19 performs asbestos treatment on the hoistways of other elevators while operating some elevators. When it does, it is comprised by the partition means 20 for isolating an asbestos treatment construction area and an elevator operation area. The procedure for providing the partitioning means 20 will be described in detail later.

  The second isolating means 19 for isolating the elevator shaft is constituted by a security zone 21. The security zone 21 is provided in at least one of the elevator doors 10 in each floor F corresponding to the elevator shaft that performs asbestos processing.

  The security zone 21 is a temporary isolation room that the asbestos processing worker passes before starting the asbestos processing work and after finishing the asbestos processing work, and in the case of large-scale construction such as asbestos removal processing. As shown in FIGS. 7A and 7B, there are a changing room 22 in which protective clothing and protective equipment for respiration are prepared, a cleaning room 23 with an air shower, a vacuum cleaner with a HEAP filter, and a garbage bag for protective clothing disposal. In the case of an asbestos containment process, the front chamber 24 is composed of two chambers, a changing room 22 and a front chamber 24.

  The third separating means 19 for separating the elevator shaft includes a negative pressure dust remover 25 provided on at least one floor so as to communicate with the elevator hoistway. The negative pressure dust remover 25 is for maintaining the inside of an elevator hoistway to be subjected to asbestos treatment in a negative pressure state.

  The fourth separating means 19 for isolating the elevator shaft includes a weathering means 26 for weathering the periphery of the elevator hoistway and an isolation cover means 27 for covering the hoisting machine 5 in the machine room 2. It is configured. Of course, in the asbestos treatment according to the present invention, the control panel in the machine room 2 and the sensors, limit switches, counterweights, wire ropes, shock absorbers, etc. in the elevator hoistway 4 are protected by the protective cover 28. It is supposed to be covered.

  Next, the procedure for actually performing asbestos treatment will be described in detail based on the embodiments shown in the drawings.

  When performing asbestos processing in the elevator shaft according to the present invention, for example, as shown in each drawing of FIG. 5, the first elevator EV1, the second elevator EV2, the third elevator EV3, and the fourth from the left In an elevator system in which four elevators EV4 are arranged in the order of the base elevator EV4, first, as shown in FIG. 5A, work stages are placed on the elevator cars of the second elevator EV2 and the third elevator EV3. Assemble 15. An operator gets on the work stage 15, and partitioning means 20 is provided between the left two elevators and the right two elevators.

  The partition means 20 includes a partition plate 31 and a fastening connector 32 as shown in FIG. The partition plate 31 may be a plastic plate, a wooden plate, or a metal plate. For example, as shown in FIG. 6A, the partition plate 31 is an elongated flat plate having a length dimension L of 5 m and a width dimension W of about 500 mm.

  The partition plate 31 is provided with a slit 33 through which the shaft portion 32a of the fastening connector 32 is inserted at one end side 31a, and a plurality of shaft portions 32a through which the shaft portion 32a of the fastening connector 32 is inserted through the other end side 31b. An insertion hole 34 is provided. A plurality of the insertion holes 34 are provided, for example, in steps of about 100 mm. In FIG. 6A, the dimension La in the length direction of the partition plate 31 is designed in advance so as to match the height dimension of the beam 30 on the elevator shaft.

  This partition plate 31 is carried into the construction site by plate conveying means 35 as shown in FIG. 6B. The plate conveying means 35 includes a rope 36, a hook 37 provided at the tip of the rope 36, and a plate clamping member 38 inserted through the rope 36, and the hook 37 is inserted into the slit 33 of the partition plate 31. The upper part of the partition plate 31 is clamped by the plate clamping member 38 and carried to the construction site.

  For example, as shown in FIG. 6C, the partition plate 31 is formed by combining one of the insertion holes 34 provided in the upper part of one partition plate 31A and the slit 33 provided in the lower part of the other partition plate 31B. The fastening connector 32 is inserted, and the hook 32b of the fastening connector 32 is engaged with the beam 30 in the elevator shaft and fixed by fastening.

  When installing a partition wall, the principle is not to contact the asbestos structure directly. In that case, a gap is created between the asbestos structure and the partition wall, but fireproofing is required to ensure the work area is sealed. Fill the gap with the repair agent used to repair the coating. At that time, as a pre-work process, a wetting agent is applied to the portion of the asbestos structure that comes into contact with the repair agent to prevent the asbestos from scattering.

  After the partition wall is formed by the partition plate 31, the work stage on the third elevator car is disassembled. At this stage, a work stage is installed on the first elevator car. As shown in FIG. 5B, asbestos processing work in the elevator hoistway is performed with the left two elevators as the first work section. During the asbestos treatment work in the first work area, the two elevators in the second work area are operating without stopping.

  After the first asbestos treatment work is completed, the work stages on the first and second elevator cars are dismantled to enable the elevator operation, and the work stages are installed on the third and fourth elevator cars. Then, asbestos treatment work in the elevator hoistway is performed with the right two units as the second work section. In the asbestos processing work, an asbestos processing worker gets on the work stage, intermittently lifts and stops the elevator car, and performs asbestos processing on the asbestos structure in the elevator hoistway when stopped.

  In the present invention, the asbestos treatment operation includes an asbestos removal treatment for removing the existing asbestos structure itself and an asbestos containment treatment for the existing asbestos structure. In the case of the former asbestos removal process, the asbestos structure is preliminarily pretreated so that asbestos is not scattered, and then the asbestos structure is disassembled and removed.

  On the other hand, in the case of the latter asbestos containment process, an asbestos treatment agent suitable for the asbestos containment is prepared for the existing asbestos structure. In the present invention, the asbestos treating agent described above is not particularly limited as long as it is a generally provided asbestos containment treating agent.

  In a more preferred example, the asbestos containment treatment agent is a first asbestos treatment agent having high permeability that penetrates into the asbestos structure by coating or spraying, and a sealing property that covers the asbestos structure by spray coating and seals asbestos. It is comprised by the combination with the 2nd asbestos processing agent with high.

  The first asbestos treating agent is a highly permeable asbestos treating agent mainly formed by mixing a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or a resin binder, and water. And the second asbestos treating agent is mainly formed by mixing a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or resin binder, an aggregate, and water. It is an asbestos treatment agent with high sealing properties.

  More specifically, the first asbestos treating agent comprises 0.1 to 2% by weight of metal hydroxide and / or strong base and weak acid metal salt, and 0.5 to 20% by weight of natural salt. The asbestos treatment agent having a high permeability formed by mixing 78 to 99% by weight of water with a paste or resin binder, and the second asbestos treatment agent is 20 to 50% by weight of a metal hydroxide. And / or a metal salt of a strong base and a weak acid, 0.5 to 10 wt% natural glue or resin binder, 1 to 10 wt% aggregate and 25 to 75 wt% water. It is an asbestos treatment agent with high sealing properties. The second asbestos treating agent may be a mixture of 0.01 to 5% by weight of organic or inorganic short fibers and / or long fiber fibers.

  Since this first asbestos treatment agent is made of a highly permeable solution, it gradually penetrates into the structure of the building by applying, spraying or injecting it onto the surface of the structure of the building containing asbestos fibers. Then, after drying, an organometallic compound is formed. Since the 2nd asbestos processing agent consists of a highly sealing solution which has lime as a main component, it sprays on the building structure after processing of the 1st asbestos processing agent, and calcium ion is asbestos fiber. It is made to act on the surface and is firmly bonded to asbestos fibers, and limestone is formed over time by the action of carbon dioxide in the atmosphere.

  In the present invention, the alkaline aqueous solution or slurry containing metal ions is based on a metal hydroxide and / or a metal salt of a strong base and a weak acid, and examples of the metal hydroxide include calcium hydroxide and hydroxide. Magnesium, aluminum hydroxide, zinc hydroxide or iron hydroxide is effective, and as the metal salt of the strong base and weak acid, sodium silicate, potassium silicate, calcium silicate, sodium borate or sodium phosphate is effective. .

  On the other hand, in the present invention, vegetable or animal oil may be added to the first and second asbestos treating agents. As the vegetable or animal oil, vegetable oils such as rapeseed oil, sesame oil, soybean oil, and palm oil, or animal oils such as fish oil are effective. For example, starch, ginkgo, and vegetable paste such as tsunosumama, and animal paste such as gelatin, collagen, and glue are effective. As the organic or inorganic fibers, natural fibers such as hemp, manila hemp and cellulose, organic fibers such as rayon, nylon, polypropylene and aramid fibers, or inorganic fibers such as glass fiber and carbon fiber are effective.

  Further, in the present invention, the asbestos treating agent obtained by the above-described constitution may be one obtained by adding an appropriate amount of synthetic resin, or further, by adding a small amount of natural rubber or synthetic rubber. It may be.

  As the synthetic resin, for example, vinyl acetate, ethylene-vinyl acetate copolymer and the like are effective, and as the synthetic rubber, styrene butadiene rubber and the like are effective.

  Aggregate is mixed in the second asbestos treating agent. As this aggregate, for example, pearlite, shirasu balloon, and polystyrene foam are effective.

  In the constituents described above, with respect to the metal hydroxide or / and the metal salt of a strong base and a weak acid, the concentration of the first asbestos treatment agent is low when it is 0.1% by weight or less. If it is too much and does not function, and the content is 2% by weight or more, the permeability is not preferable. On the other hand, in the case of the second asbestos treating agent, when the amount is 20% by weight or less, the coating film becomes thin and there is no effect on dust sealing. On the other hand, when this is 50% by weight or more, the viscosity of the mixture liquid becomes too high, which causes a problem in spraying.

  Furthermore, in the above-described components, when the vegetable or animal glue is 0.5% by weight or less, the blocked state cannot be fixed over a long period of time. On the other hand, when it is 20% by weight or more, the viscosity becomes too high to sufficiently penetrate into the building structure.

  Furthermore, in the component described above, with respect to the mixing amount of the organic or inorganic fiber, in the case of the first asbestos treatment agent that does not mix the organic or inorganic fiber, the effect of increasing the permeability into the building structure. In the case of the second asbestos treatment agent in which the organic or inorganic fibers are mixed, the effect of improving the dust sealing property in the building structure is exhibited.

  As preparatory work for this asbestos treatment, pre-investigation to measure the spray thickness of the asbestos structure, pre-work cleaning of surrounding environment facilities, fixtures, walls, floors, ceilings, etc., installation of various equipment necessary for asbestos treatment Etc. are performed. In this preparatory work stage, the dust concentration before work is measured.

  As the first asbestos treating agent application operation according to the present invention, first, the first asbestos treating agent is subjected to test spraying, and the first asbestos treating agent is sprayed through the scattering prevention treatment. A penetration check is performed. At this stage, the dust concentration during work is measured. Regarding the treatment of the first asbestos treating agent, the first asbestos treating agent injection tool 1 described later may be used to press-fit the first asbestos treating agent into the building structure to be constructed.

  Next, as the application work of the second asbestos treatment agent, first, the second asbestos treatment agent and the equipment for the second asbestos treatment are prepared. Thereafter, the test spray of the second asbestos treatment agent is performed, and the spray treatment of the second asbestos treatment agent is performed.

  Finally, inspection and tidying work is done. At this stage, asbestos processing is inspected and confirmed, and various equipment is cleaned up. During this inspection and tidying work, the dust concentration after the work is measured.

FIG. 1 shows an example of an elevator system to which the present invention is applied, and is a schematic side sectional view showing a middle floor in a broken state. FIG. 2 is a schematic cross-sectional plan view showing an example of an elevator system in which two units are arranged side by side. FIG. 3 shows an example of an elevator system according to the application of the present invention. FIG. 3A is a schematic sectional side view of the upper floor portion, and FIG. 3B is continuous with the lower end side of FIG. 3A. It is a schematic sectional side view of the lower floor part. FIG. 4 is a schematic cross-sectional plan view showing an example of a state in which a work stage (working scaffold) is provided outside the elevator car on the ceiling side. FIG. 5 shows an example of a construction procedure for asbestos treatment in an elevator hoistway in an elevator system in which four units are arranged in order from the first to the fourth unit from the left. Is a schematic cross-sectional plan view showing a situation where a work stage is installed on the second and third elevator cars and a partition wall is constructed between the left two and the right two; FIG. 5B shows a situation in which the third work stage is dismantled, the work stage is installed on the first elevator car, and the left two are used as the first work area to perform asbestos processing work in the elevator hoistway. FIG. 5C is a schematic cross-sectional view showing a state in which the work stages on the first and second elevator cars are disassembled so that the elevator can be operated, and the work stages are placed on the third and fourth elevator cars. Install two right As a second work area, a schematic plan sectional view showing a situation of performing asbestos processing operations of the elevator shaft. FIG. 6 shows an elevator system in which a plurality of elevators are arranged side by side, when asbestos processing work is performed in another elevator shaft in a state where some elevators are in operation, the two are partitioned. FIG. 6A is a schematic front view showing an example of the partitioning means, and FIG. 6B is a schematic perspective view showing a state of movement of the partitioning means to the installation portion. FIG. 6C is a schematic perspective view showing an installed state. FIG. 7 shows an installation example of a security zone consisting of three chambers through which an operator passes when entering and exiting the work stage on the elevator car, and FIG. 7A is a schematic plan sectional view thereof, FIG. 7B is a schematic side sectional view thereof.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator system 2 Machine room 3 Elevator car 4 Elevator hoistway 5 Hoisting machine 6 Control panel 7 Wire rope 7a One end of rope 7b The other end of rope 8 Elevator upper beam 9 Counterweight 10 Landing side door F Each floor W of a building Road wall surface P Pits N1 to Nn Platforms on each floor 11 Car side doors 12 Car buffer for elevator cars 13 Weight buffer for counterweights 14 Upper outer side on the ceiling side 15 Work stage 16 Multiple handrail frames 17 Balance Maintenance means 18 Counterweight protection means 19 Isolation means 20 Partition means 21 Security zone 22 Changing room 23 Washing room 24 Front chamber 25 Negative pressure dust remover 26 Lifting means 27 Isolation cover means 28 Protective cover 30 Beam 31 on the elevator shaft 31 Partition plate 32 Tightening Connecting joint 33 Slit 34 Plural insertion holes 35 Plate transport means 36 Transport rope 37 Hook 38 Plate clamping member EV1 First elevator EV2 Second elevator EV3 Third elevator EV4 Fourth elevator

Claims (10)

An asbestos treatment method in an elevator shaft for removing or containing asbestos for an existing asbestos structure in an elevator shaft (including an elevator hoistway and a machine room),
Providing a work stage for an asbestos operator to board outside the ceiling side of the elevator car;
Providing an isolation means for isolating an elevator shaft that performs asbestos treatment;
An asbestos treatment worker is mounted on the work stage, the elevator car is lifted and stopped intermittently, and an asbestos treatment process is performed on the asbestos structure in the elevator hoistway when stopped.
A security zone provided in at least one elevator entrance / exit on each floor corresponding to an elevator hoistway for performing asbestos treatment, and a negative pressure provided on at least one floor so as to communicate with the elevator hoistway. An asbestos treatment method in an elevator shaft, comprising a dust remover and a weathering means for weathering the periphery of the elevator shaft.   The work stage is assembled in a suspended manner with respect to the upper beam installed outside the ceiling side of the elevator car so that no load is applied to the car ceiling, and the balance at the time of boarding of the operator 2. The asbestos treatment method in an elevator shaft according to claim 1, comprising a maintenance means.   The asbestos treatment method in an elevator shaft according to claim 1 or 2, wherein a protective means for protecting an operator from a counterweight is provided for the work stage.   The elevator shaft according to any one of claims 1 to 3, wherein the security zone is composed of a changing room, three rooms including an air shower cleaning room and a front room, or two rooms including a changing room and a front room. Inside asbestos processing method.   The asbestos treatment method in an elevator shaft according to any one of claims 1 to 4, wherein the isolation means includes an isolation cover means for covering the hoisting machine in the machine room.   In an elevator system in which a plurality of elevator cars are individually moved up and down individually, when assembling the hoistway of another elevator while operating some of the elevators, the separating means is an asbestos treatment work. The asbestos treatment method in an elevator shaft according to any one of claims 1 to 5, comprising partitioning means extending in a vertical direction separating the compartment and the elevator operation compartment. An asbestos treatment method in an elevator shaft that encloses asbestos for an existing asbestos structure in an elevator hoistway,
Providing a work stage for an asbestos operator to board outside the ceiling side of the elevator car;
Providing an isolation means for isolating an elevator shaft that performs asbestos treatment;
An asbestos treatment worker is mounted on the work stage, the elevator car is intermittently raised and lowered, and the first asbestos treatment agent having high permeability is applied to the asbestos structure in the elevator hoistway when stopped. Or an asbestos containment treatment step of covering the asbestos structure by enclosing the asbestos structure by spraying and applying a second asbestos treatment agent having a high sealing property to the inside of the asbestos structure. Consists of
A security zone provided in at least one elevator entrance / exit on each floor corresponding to an elevator hoistway for performing asbestos treatment, and a negative pressure provided on at least one floor so as to communicate with the elevator hoistway. An asbestos treatment method in an elevator shaft, comprising a dust remover and a weathering means for weathering the periphery of the elevator shaft. The first asbestos treating agent is a highly penetrating asbestos treating agent comprising mainly a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or resin binder, and water. And
The second asbestos treating agent is mainly a sealing property formed by mixing a metal hydroxide and / or a metal salt of a strong base and a weak acid, a natural glue or resin binder, an aggregate, and water. The asbestos treatment method in an elevator shaft according to claim 7, wherein the asbestos treatment agent is high. The first asbestos treating agent is 0.1 to 2% by weight metal hydroxide and / or a metal salt of strong base and weak acid, 0.5 to 20% by weight natural glue or resin binder, It is a highly permeable asbestos treatment agent formed by mixing 78 to 99% by weight of water,
The second asbestos treating agent comprises 20 to 50% by weight metal hydroxide and / or strong base and weak acid metal salt, 0.5 to 10% by weight natural glue or resin binder, The elevator shaft according to claim 7 or 8, wherein the asbestos treatment agent has a high sealing property obtained by mixing 10% by weight of aggregate and 25 to 75% by weight of water. Asbestos processing method.   10. The second asbestos treating agent is formed by mixing 0.01 to 5% by weight of organic or inorganic short fibers and / or long fiber fibers. Asbestos treatment method in the elevator shaft shaft described.

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