JP4382766B2 - Rehabilitation method of miscellaneous drainage pipe and hose lifting device in high-rise building - Google Patents

Description

  The present invention, for example, in an existing miscellaneous drainage pipe composed of a standing main pipe having a branching portion of a branch pipe piped in a building such as a high-rise apartment building such as an apartment or a high-rise building for offices, after cleaning the inner surface thereof The present invention relates to a method for correcting a miscellaneous drainage pipe in which a resin paint is sprayed on the inner surface thereof to form a resin inner pipe, and a hose pulling device for resin supply used in the correction method.

  Conventionally, as an example of correcting miscellaneous water distribution pipes in this type of high-rise building, for example, a process of cutting at two places, the lower and upper drainage pipes, a cleaning process for removing deposits on the inner surface of the pipe wall after cutting, and a drying process The hose inserted in the pipe is heated and the movement speed can be freely adjusted, and the hose inserted in the pipe is moved at the required constant speed, and the quick-drying two-component epoxy resin paint is ejected from the paint spray nozzle at the tip to the inner surface of the pipe wall. A drainage vertical pipe rehabilitation method comprising a step of forming a coating film is known (Patent Document 1).

  In this drainage vertical pipe rehabilitation method, a hose having a paint spray nozzle for forming a coating film on the inner surface of the pipe wall is cut at two places, the lower part and the upper part of the drainage vertical pipe. It inserts in a pipe | tube from an opening part, and lowers a coating material ejection nozzle to the opening position of a lower end. Inside the hose, a wire for hoisting or towing, two pipes for separately sending two liquids of two-component epoxy resin paint, and a two-component mixing and feeding device are connected to the tip of the pipe, A jet nozzle is further connected to and stored in the two-liquid mixing and feeding device. In addition, in order to ensure the fluidity of the two-component epoxy resin paint and the rapid curing stability of the coating film by spraying after uniform mixing, for example, for heating to the same temperature as the epoxy paint that sends out the entire hose A heating means composed of a sheathed heater (heating wire) is provided.

  And the hose is wound up by a hydraulic roller that can adjust the winding speed on the upper opening side, and is wound up at a constant speed by the hydraulic roller while jetting the two-component epoxy resin paint from the spray nozzle, The spray nozzle is pulled up to the opening at the upper end, thereby forming a coating film having a required thickness on the inner wall surface of the drainage vertical pipe.

JP-A-5-31456

  By the way, the hose used in the known drainage vertical pipe correction method has a diameter of about 50 mm and a thickness of the outer skin of about 1 to 3 mm to protect the pipe for sending resin paint and the heating means. Furthermore, the Shore A of the elastic body hardness is set to 80-95. Since the hose itself has a relatively high hardness in this way, it does not bend unless it is a large R as a whole, and the tow wire, the two pipes, the heating means, etc. that house the weight inside are also included. Including about 2 to 3 kg per meter.

  Then, as a practical matter, the position where the vertical drainage pipe is arranged in the high-rise building is relatively deep and there are many places where the space is narrow, and it is deepened from the traction hydraulic roller installed outdoors. In order to move a hose that is heavy and difficult to bend into a narrow space, the hose travel space is bent so that the floor, wall, and ceiling are not damaged by placing multiple guide poles in the room. Therefore, there is a problem that preparation work for correcting the drainage vertical pipe is troublesome and expensive.

  In addition, since the hose itself has a considerable weight, for example, when trying to paint a drainage vertical pipe equivalent to the fifth floor, the hose is drawn out by about 20 m and hung from the upper opening of the drainage vertical pipe. The weight of the hose is almost 40-60 kg, and it must be supported or lifted, driven by a hydraulic roller set in the outdoor or corridor away from the upper opening, In situations where it is necessary to pull a hose that is difficult to be bent multiple times, a stronger traction force must be applied, resulting in variations in the amount of paint supplied due to bending, and a stable constant speed. In addition to being unable to pull up with the hose, there are problems in handling the hose itself.

  Therefore, in the drainage vertical pipe rehabilitation method according to the above-mentioned known technology, when considering the special location of the drainage vertical pipe, it is possible to improve the workability and workability including preparation work and improve safety. In addition, there is a problem to be solved in order to facilitate handling of the hose.

  According to one aspect of the present invention, after cleaning the inside of a miscellaneous drain pipe that is piped in a building and has at least a branch portion, an ejection nozzle is attached at least to the tip from the upper opening of the standing main pipe, and paint is supplied to the inside A hose containing two pipes and a pulling wire for insertion is inserted over the required length, and the resin hose is pulled up while the resin paint is ejected from the ejection nozzle, and a resin inner pipe made of a coating is formed on the inner surface of the main pipe It is a method of forming and correcting, for a driving hose and a driven hanger that are attached to the upper opening of the standing main pipe and are bent at a substantially right angle in a circular arc shape and sandwiching and lifting the hose from both sides A lifting device having a pulley is attached, the driving pulley is disposed at an inner position of the corner bent at a substantially right angle, and a driven pulley is disposed at an outer position of the corner. There is provided a rehabilitation method wastewater pipe in high-rise buildings, which comprises transferring substantially horizontally pulling the hose directly in the upper opening of the stand main pipe by.

  Another aspect of the present invention is that after cleaning the inside of a miscellaneous drain pipe that is piped in a building and has at least a branch portion, an ejection nozzle is attached to at least the tip from the upper opening of the standing main pipe, A hose containing two pipes for supplying paint and a pulling wire is inserted over the required length, and the hose is pulled up while the resin paint is ejected from the ejection nozzle, and the resin on the inner surface of the main pipe is covered with a coating film. A lifting device used for forming an inner pipe, a cylindrical hose guide part bent at a substantially right angle in an arc shape for attachment to the upper opening of the standing main pipe, and inside the hose guide part Driving pulley and driven pulley for clamping the hose to be inserted from both sides and pulling up, and a distance adjusting means for adjusting the clamping pressure of the hose between these pulleys And a motor for driving the driving pulley, the driving pulley being disposed inside the corner bent at a substantially right angle of the hose guide portion, and the driven pulley being disposed outside the corner. The pulley is formed of a resin material substantially the same as the hose, and the elastic hardness of the resin material is Shore A 70 to 90. The hoist used for rehabilitation of miscellaneous drainage pipes in a high-rise building is characterized in that A device is provided.

  In the invention relating to the rehabilitation method, when the elastic body hardness of the resin material constituting the hose is Shore A 80 to 95, the elastic body hardness of the resin material constituting the contact surface with the hose of the pulley is Shore A 70 to In the invention relating to the lifting device, the motor for driving the driving pulley is disposed via a gear box; the driven pulley is rotated via a pair of stays. Alternatively, each of them includes an additional requirement for pivotal attachment.

  The method of rehabilitating a miscellaneous water distribution pipe according to the present invention is a method of pulling a hose from a remote position by directly pulling up a hose through a cylindrical hose guide part bent at a substantially right angle in an arc shape in an upper opening of a standing main pipe. Because it does not give an excessive bending action to the hose, it prevents the pipe for supplying paint contained in the hose from being pressed and deformed, and the resin paint is properly supplied to form an appropriate coating film. Because it does not bend excessively in the lateral direction, it is not necessary to increase the hardness of the hose itself so that the overall diameter including the thickness of the hose can be reduced by, for example, about 5 to 10 mm. , Not only can the overall weight be reduced, but the entire hose has become thinner, making it easier to bend. It achieved and workability and improvement in workability of over scan arrangement, an excellent effect can be improved safety.

Further, the hose pulling device according to the present invention includes a cylindrical hose guide part bent at a substantially right angle in a circular arc shape to be attached to the upper opening of the standing main pipe, and a hose inserted into the hose guide part. A pulley for driving and a driven pulley for holding the pulley from both sides, a distance adjusting means for adjusting the holding pressure of the hose between these pulleys, and a motor for driving the driving pulley Then, the driving pulley is arranged inside the corner bent at a substantially right angle of the hose guide part, and the driven pulley is arranged outside the corner, so that the weight of the hose is applied to the driving pulley. You can pull up the hose efficiently,
The lifting device itself is lightweight and compact, and the pulley is made of the same material as that of the hose and has an elastic body hardness of Shore A 70 to 90. It is possible to pull up the hose, thereby preventing the hose from being excessively bent or pressed, so that it is not necessary to increase the hardness of the elastic body of the hose. It is possible to reduce the thickness of the material, and it is possible to reduce the weight and to facilitate the handling thereof.

  Next, the present invention will be described in detail based on the specific embodiments shown in the drawings. FIG. 1 schematically shows the situation of some miscellaneous drainage pipes in an apartment house such as a five-story condominium. The miscellaneous drainage pipe 1 includes a standing main pipe 2 including an extended vent pipe. A horizontal main pipe 3 is piped at the lower end of the top floor from the roof to the basement for external drainage. A branch pipe 5 or a vent pipe branched through a branch section 4 such as a TY joint is connected to the standing main pipe 2 for each individual house on each floor or for each coupled vent connection section (not shown). Has been.

  In each individual house, a sink 6 is connected to a branched branch pipe 5 via a drain trap 7. In addition, in each individual house, the drain pipes for the bath, the washing machine, and the wash basin may be separately provided, but this is a method of rehabilitation including these drain pipes.

  There are many oil stains and various dirt components / foreign substances in the drainage, and the miscellaneous drain pipe 1 to which the sink 6 is connected is attached to the inner surface of the stand main pipe 2 and the branch pipe 5 that is branched. Deposits adhere to obstruct the flow of drainage, and depending on the location of the drainage pipe, in particular, the vicinity of the branching portion 4 may corrode and have holes or cracks.

  In order to regenerate or correct the miscellaneous drainage pipe 1 in such a situation, it is first necessary to clean the inside of the miscellaneous drainage pipe 1. In this case, the cleaning process is preliminarily selected depending on the degree of adhesion of the deposit inside the miscellaneous drain pipe, that is, the degree of dirt. When the degree of contamination is significant, most of the deposits are removed by rotating a ball and jetting high-pressure cleaning water using a conventional pipe cleaning device (for example, JP-A-9-29192). Then, after the removal, for example, warm air or hot air is supplied to heat and dry the inside of the miscellaneous drainage pipe 1, and then the sanding substance is passed by compressed air to perform the polishing process and drop off. The difficult scale is also removed, and then the whole is cleaned by introducing compressed air that does not contain sandy substances.

  In addition, when the degree of contamination is low (normal case), first, warm air or hot air is sent to dry the deposits inside the miscellaneous drainage pipe appropriately, and then sandy substances are removed by compressed air. The polishing process is carried out by passing it through to remove dry deposits including scales that do not easily fall off, and after that, only compressed air is introduced for cleaning. In any polishing process, the supply of the sandy substance to the compressed air is performed continuously or intermittently, and the polishing process is performed in one direction or in a reciprocating manner.

  The lining of the standing main pipe 2 will be described with reference to FIGS. The upright main pipe 2 including the extended vent pipe has its upper end piped from the top floor roof to the underground horizontal main pipe 3 at the lower end, and is lined from the lower main pipe 3 side.

  An apparatus for forming a resin inner pipe used in this lining is shown in FIGS. This forming apparatus includes a resin hose 8, a pulling wire 9 for pulling up the whole, a resin jet head 10 that forms an inner tube, and a main component that is a two-component epoxy resin paint. It is composed of a mixing section 11 for mixing the curing agent, two pipes for supplying the main agent and the curing agent, that is, a main agent pipe 12a and a curing agent pipe 12b.

  A small motor 13 is accommodated in the ejection head portion 10, and a bowl-shaped head 14 is attached to a rotating shaft 13 a of the small motor 13. The bowl-shaped head 14 is located on the distal end side (lower end side in the drawing) of the ejection head portion 10, and a plurality of small holes or slit-shaped holes 15 are provided on the peripheral side wall thereof. The resin paint supplied to 14 is jetted to the outside in a jetting state from a small hole or slit-like hole 15 by centrifugal force due to rotation.

  Center holders 16 are attached to the outer peripheral surfaces at a plurality of locations (in the illustrated embodiment, the base portion side and the substantially intermediate portion) in the body portion of the ejection head portion 10. The center holder 16 has a plurality of elastic members attached radially and inclined toward the head 14 side, and the ejection head portion 10 is positioned, for example, at a substantially central portion of the standing main pipe 2. Is.

  The resin coating is supplied to the bowl-shaped head 14 in an arbitrary and appropriate amount sequentially from the base side of the ejection head unit 10 through the supply pipe 17, and the tip end of the supply pipe 17 is located inside the head 14. Since it is located closer to the bottom, the resin paint is distributed evenly along the bottom, and a uniform spray state is obtained as a whole.

  The mixing portion 11 has a tubular shape with a predetermined length as a whole, and the tip end side is connected to the base side of the ejection head portion 10 and communicates with the supply pipe 17. The mixing section 11 is equipped with a resin paint mixing element 18 supplied in two liquids.

  As shown in FIG. 2B, the mixing element 18 has a screw conveyor shape as a whole, and right-twisted elements 18a and left-twisted elements 18b each having a fin shape are alternately arranged. These are formed in a series, and the number of these left and right twisted elements is about 30. When the supplied two liquids pass through the left and right twisted elements 18a and 18b, the fluid near the center follows the twist of the fin. The fluid on the tube wall side and the fluid on the tube wall side are alternately divided and transferred to the center side, and the whole is mixed and stirred substantially uniformly by repeating this.

  On the base side of the mixing portion 11, a joining portion 19 of resin paint supplied with two liquids is provided, and the connecting portion 19 is provided with two connecting pipes 20 and 21. The pipes for supplying the main agent and the curing agent are connected to the connection pipes 20 and 21. For example, the pipe 12 a for the main agent is connected to the connection pipe 20, and the pipe 12 b for the curing agent is connected to the connection pipe 21. They are connected via couplers 20a and 21a, respectively.

  Using such a resin inner pipe forming apparatus, as shown in FIG. 3, the lining of the standing main pipe 2, that is, the formation of the resin inner pipe, will be described. The standing main pipe 2 has a length of, for example, 20 m or more. Even if there is, the twin hose 12 is inserted in order from the upper end portion of the standing main pipe 2 together with the appropriate pulling wire to hang down to reach the horizontal main pipe 3 at the lower end, and at the connecting portion with the horizontal main pipe 3, the standing main pipe The connection pipes 20 and 21 are respectively connected to the pipes 12a and 12b via the couplers 20a and 21a, whereby the jet head part 10 can be easily connected together with the mixing part 11, and the pulling wire 9 Is connected to the jetting head part 10 via the mixing part 11 so that the entire hose 8 and pipes 12a, 12b can be pulled up without imposing a burden. That.

  In this state, the main agent and the curing agent are supplied from the pipes 12a and 12b, and it is confirmed whether or not the mixed resin has reached the bowl-shaped head 14 of the ejection head unit 10. Pulling up the pulling wire 9 together with the hose 8 from the cutting opening at a predetermined position in the upper part of the main pipe 2 at a predetermined speed, and turning on the head 14 by turning on the small motor 13 while continuing to supply the resin. Thus, the resin is sprayed from the small holes 15 of the head 14 by centrifugal force and adhered or applied to the inner wall surface of the standing main pipe 2 to form a substantially uniform resin layer or paint layer 22.

  An example of a pulling device for pulling the pulling wire 9 together with the hose 8 in this case is shown in FIGS. This lifting device is used by being attached to the upper opening of the standing main pipe 2, and is used for pulling the hose 8 and the pulling wire 9 together. It can be pulled up and transported quickly without forcibly bending.

  The specific structure of the lifting device is generally comprised of a hose guide part 25 for attachment to the upper end of the standing main pipe 2, a small diameter support member 26 connected to the hose guide part 25, and a hose guide part 25. The hose guide section includes driving and driven pulleys 27 and 28 for sandwiching and lifting the hose 8 to be inserted from both sides, and a motor 24 and a gear box 29 for driving the driving pulley 27. Reference numeral 25 denotes a cylindrical shape bent at a substantially right angle, and an end portion on the mounting side is a mounting end portion 25a having a slightly enlarged diameter.

  The hose guide portion 25 is formed with window portions 30a and 30b, and a driving pulley 27 and a driven pulley 28 are attached to the hose guide portion 25 so as to face the window portions. Is attached via support plates 31a and 31b so as to face the window 30a of the inner corner bent at a substantially right angle, and the driven pulley 28 is attached to the window 30b of the outer corner via a pair of stays 32a and 32b. It is attached so that it can pivot freely. And, between the support plates 31a, 31b and the stays 32a, 32b, sticks 33a, 33b, for example in the form of bolts, are arranged in a bridge state, and the sticks provide a gap between the driving pulley 27 and the driven pulley 28. It is a distance adjusting means for adjusting, and can be adjusted by rotating, for example, nut-like members 34a, 34b on the support plates 31a, 31b side, and a hose between the driving pulley 27 and the driven pulley 28. The clamping pressure of 8 can be adjusted, and it is clamped and pulled up with the required clamping pressure.

  A guide roller 35 is provided below the inner corner of the hose guide 25 to guide the hose 8 at the position facing the opening of the standing main pipe 2 when the lifting device is in use. A motor 24 is attached to the thin support member 26 via a gear box 29, and drive shafts 29 a and 29 b projecting on both sides of the gear box 29 driven by the motor 24 and drive shafts on both sides of the pulley 27. Chains or drive belts 36a, 36b are suspended between 27a, 27b.

  A pair of stays 32 a and 32 b to which the driven pulley 28 is attached are attached to be rotatable or pivotable via a shaft 37, and a stopper member 38 whose rotation range is restricted is provided in the vicinity of the shaft 37. It is provided and abuts against the stopper member 38 to regulate the angular range of rotation of the stay so that the driven pulley 28 is not so separated. The gear box 29 can be set in an appropriate state in the vicinity of the standing main pipe 2 by a support leg 40 or the like whose height can be freely adjusted.

  In the case of the present invention, not only the lifting device but also the driving pulley 27 and the driven pulley 28 that sandwich and lift the hose 8 are newly improved. In other words, the familiarity with the hose 8 is improved, so that the slip at the time of lifting can be eliminated and the lifting can be efficiently performed.

  First, the hose 8 has an outer skin made of urethane resin having an elastic body hardness of Shore A of 80 to 95. In order to improve the familiarity with the hose 8, a pulley shape, that is, a driving pulley 27 and a driven pulley 28 are formed by using substantially the same material at a portion in contact with the hose. However, it is better to make the elastic body hardness (Shore A) a little softer, so Shore A uses the urethane resin in the range of 70-90 to form the contact surface side with the hose to make the pulleys 27 and 28 It is.

  Thus, by setting the elastic body hardness on the contact surface side of the pulleys 27 and 28, that is, the shore A slightly lower than the elastic body hardness of the hose 8, the hose 8 can be put on the driving pulley 27, and the follower is used. When the pulley 28 is clamped so as to be pressed from above, the hose 8 is not deformed and the pulley side is slightly deformed, and since it is made of the same material, it comes into close contact. It is possible to pull up while painting by spraying the paint onto the inner surface of the standing main pipe 2 at a set speed without causing slip between them.

  In addition, when the miscellaneous drainage pipe 1 is composed of different-diameter pipes whose diameters are sequentially changed from the lower end portion to the upper end portion, the lower large-diameter standing main pipe portion and the upper small-diameter standing main pipe portion, The supply amount of the paint and the pulling speed of the ejection head unit 10 must be different from each other, and the adjustment is performed. Accordingly, the relationship between the paint supply amount and the lifting speed of the jetting head section 10 is set by a required calculation based on the design drawing of the installed main pipe 2, and the setting value is set by a control device programmed. Is driven.

  In addition, by adjusting the lifting speed of the hose 8 and the supply amount of the paint by the lifting device, the paint is sprayed on the inner wall surface of the standing main pipe 2 to be corrected, and a high-quality thick coating film of about 1 to 3 mm is formed. The formed coating film can be formed quickly and efficiently. For example, if the heated (dry) air is blown from the lower end portion of the standing main pipe 2 to forcibly dry it, the coating film extends over the entire length of the standing main pipe 2. Therefore, it becomes a continuous resin inner tube. Since the rehabilitation work, that is, the drying process, the polishing (cleaning) process, and the painting process are easy and the lining time is shortened, the same-day construction (rehabilitation) can be performed without performing temporary drainage piping.

  In any case, the method of rehabilitating the miscellaneous water distribution pipe 1 according to the present invention is different from the case where the hose 8 is pulled up directly at the upper opening of the standing main pipe 2, unlike the case where the hose 8 is pulled away from the opening. Since an unreasonable bending action by traction is not imparted to the hose 8 itself, the drawing operation of the hose 8 in the preparatory stage prior to construction is facilitated, and the paint supply pipes 20 and 21 housed in the hose 8 are provided. Thus, the resin coating composed of the main agent and the curing agent is properly supplied to form an appropriate coating film. In addition, since the hose 8 is lifted directly so as to be placed on the driving pulley 27 in the upper opening of the standing main pipe 2, there is no excessive bending action on the hose 8, so that the hardness of the hose itself needs to be so high. As a result, the overall diameter, including the thickness of the hose, can be made smaller by, for example, about 5 to 10 mm than the conventional one, and not only the overall weight can be reduced, but also the hose becomes thinner. As a whole, it becomes easier to bend, the hose routing work at various construction sites, that is, the handling work of the hose including the preparation work becomes easier, and at the same time the safety can be improved. It can be widely used in construction methods.

In addition, the hose pulling device according to the present invention is set by adjusting the height in the vicinity of the standing main pipe 2, and the fitting end 25a of the hose guide pipe 25 having a larger diameter is fitted and connected to the upper opening. Since the device is easy to install, the hose 8 suspended in the standing main pipe 2 at the upper opening is placed on the driving pulley 27 and is pushed up by the driven pulley 27 so that it slips. Can be pulled up efficiently without any problem, and the proper clamping state can be set between the two pulleys by the distance adjusting means 33a and 33b that can adjust the clamping pressure of the hose 8, so that the hose 8 is not forcedly crushed. Furthermore, these pulleys are substantially the same in quality as the hose 8 and the material having an elastic body hardness of Shore A 70 to 90 is selected. Since the familiarity is improved and the hose 8 can be lifted without slipping, thereby not imparting an unreasonable bending action or pressing action to the hose 8, it is not necessary to increase the elastic body hardness of the hose 8 so much. The entire diameter including the wall thickness of the hose 8 can be reduced, the weight can be reduced, and the handling thereof can be facilitated, whereby it can be widely used for lifting the hose 8 used for rehabilitation of existing piping. It is.
In the invention of the present application, all technical matters described in the specification and drawings of Japanese Patent Application No. 2000-29084 of the prior invention of the same applicant can be used.

It is explanatory drawing which showed schematically the condition of the miscellaneous drain pipe in the apartment house which can apply the rehabilitation method which concerns on embodiment of this invention. The main part of the apparatus for forming the resin inner pipe | tube used for the said rehabilitation method is shown roughly, (A) is sectional drawing which showed the principal part schematically, (B) is resin. It is a partially expanded sectional view which shows the mixing part of a coating material. It is the side view which showed a part of the standing main pipe which showed the condition which is implementing the rehabilitation method in cross section. It is a schematic side view which shows the pulling-up apparatus of the hose used for the rehabilitation method. It is a top view of the lifting device. It is a schematic side view of the side to which the driven pulley of the lifting device is attached. It is a perspective view which shows an example of the use condition of the same raising apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Miscellaneous drainage pipe 2 Standing main pipe 3 Horizontal main pipe 4 Branching part 5 Branched branch pipe 6 Sink 7 Discharge trap 8 Hose 9 Pulling wire 10 Jetting head part 11 Mixing part 12a Pipe for supplying main agent 12b For supplying hardener Pipe 13 Small motor 13a Rotating shaft
14 Head 15 Hole 16 Center holder 17 Supply pipe 18 Mixing element 18a Right twist element
18b Left twist element
DESCRIPTION OF SYMBOLS 19 Junction part 20, 21 Connecting pipe 20a, 21a Coupler 22 Resin layer or paint layer 24 Motor 25 Hose guide part 25a Expanded mounting end part 26 Small diameter support member 27, 28 Pulley 27a, 27b Drive shaft 29 Gear box 29a 29b Drive shaft 30a, 30b Window hole 31a, 31b Support plate 32a, 32b Stay 33a, 33b Stick (Spacing adjustment means)
34 Nut-shaped member 35 Guide roller 36a, 36b Chain or drive belt 37 Shaft 38 Stopper member 40 Support leg

Claims (5)

After cleaning the inside of the miscellaneous drainage pipe that is piped in the building and has at least a branch part, two pipes for supplying a paint to the inside with an ejection nozzle attached at least at the tip from the upper opening of the standing main pipe A hose containing a traction wire and a hose is inserted over the required length, and the hose is pulled up while the resin paint is ejected from the ejection nozzle, and a resin inner tube made of a coating film is formed on the inner surface of the main pipe and corrected. There,
A cylindrical hose guide part that is attached to the upper opening of the standing main pipe and is bent at a substantially right angle in a circular arc shape and a lifting device that includes a driving pulley and a driven pulley that lifts the hose from both sides are attached,
The driving pulley is disposed at an inner position of the corner bent at a substantially right angle, and the driven pulley is disposed at an outer position of the corner;
A method for rehabilitating miscellaneous drainage pipes in a high-rise building, wherein the hoses are directly pulled up and transferred substantially horizontally at the upper opening of the standing main pipe by the lifting device. When the elastic body hardness of the resin material constituting the hose is Shore A 80 to 95,
The method for rehabilitating a miscellaneous drain pipe according to claim 1, wherein the elastic body hardness of the resin material constituting the contact surface of the pulley with the hose is Shore A 70 to 90. After cleaning the inside of the miscellaneous drainage pipe that is piped in the building and has at least a branch part, two pipes for supplying a paint to the inside with an ejection nozzle attached at least at the tip from the upper opening of the standing main pipe The hose containing the traction wire and the hose is inserted over the required length, and the hose is pulled up while the resin paint is ejected from the ejection nozzle, and the hose is used to form a resin inner tube with a coating on the inner surface of the main pipe A device,
A cylindrical hose guide part bent at a substantially right angle in an arc shape for attaching to the upper opening of the standing main pipe;
A driving pulley and a driven pulley for holding and lifting a hose inserted into the hose guide part from both sides;
Between these two pulleys, an interval adjusting means that can adjust the holding pressure of the hose,
A motor for driving the driving pulley,
The driving pulley is arranged inside the corner bent at a substantially right angle of the hose guide part, and the driven pulley is arranged outside the corner,
These pulleys are made of a resin material substantially the same as the hose, and the elastic hardness of the resin material is Shore A 70 to 90. The hose used for rehabilitation of miscellaneous drainage pipes in a high-rise building. Lifting device. The hose pulling device according to claim 3, wherein the motor that drives the driving pulley is disposed via a gear box. The hose pulling device according to claim 3, wherein the moving pulley is attached so as to be rotatable or pivotable through a pair of stays.

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