JP4210689B2 - Hose lifting device used for rehabilitation of miscellaneous drainage pipes in high-rise buildings - Google Patents

Description

The present invention is, for example, in an existing miscellaneous drainage pipe composed of a standing main pipe having a branching portion of a branch pipe that is piped in a building such as a high-rise apartment building such as a condominium or a high-rise office building, and after cleaning the inner surface thereof Further, the present invention relates to a hose pulling-up device in which a miscellaneous drainage pipe is formed by spraying a resin paint on the inner surface thereof to form a resin inner pipe.

  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.

  The present invention is for cleaning the inside of a miscellaneous drain pipe that is piped in a building and having at least a branching portion, and then, from the upper opening of the standing main pipe, an ejection nozzle is attached to at least the tip, and the paint is supplied to the inside. To insert a hose containing two pipes and a traction wire over the required length, and pull up the hose while ejecting the resin paint from the ejection nozzle to form an inner resin pipe with a coating on the inner surface of the main pipe A pair of arc-shaped plates for attaching to the upper opening of the standing main pipe, and a pulley for attaching the hose from both sides and pulling up substantially vertically. The distance between these pulleys consists of a distance adjusting means that can adjust the clamping pressure of the hose and a motor that drives one of these pulleys. 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 hose used for rehabilitation of miscellaneous drainage pipes in a high-rise building is characterized in that A lifting device is provided.

In the hose pulling device according to the present invention, the motor for driving the pulley is disposed via a gear box; one of the pulleys for holding the hose is a driving pulley and the other is a driven pulley. The driven pulley includes an additional requirement that the driven pulley is pivotally or pivotally mounted via a pair of stays.

  A hose pulling device according to the present invention includes a pair of arc-shaped plates for mounting to an upper opening of a standing main pipe, and a pulley for holding the hose from both sides and pulling the hose substantially vertically. The gap between these pulleys is composed of an interval adjusting means that can adjust the holding pressure of the hose, and a motor that drives one of these pulleys, and the lifting device itself is lightweight and compact, By selecting a material that is substantially the same quality as the hose and has an elastic body hardness of Shore A 70-90, the familiarity with the hose can be improved and it can be pulled up without slipping. Since no bending or pressing action is applied, it is not necessary to increase the hardness of the hose elastic body so much. The thickness can also be thinned overall diameter including, an excellent effect say its handling is also facilitated with weight reduction can be achieved.

  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, a drain pipe for a bath, a washing machine, and a wash basin may be separately provided, but these drain pipes can be rehabilitated.

  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 up 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 substantially vertically, so that the hose 8 is not bent excessively. And can be pulled up quickly.

  The specific structure of the lifting device is generally composed of a pair of mounting plates 25 and 26 for mounting to the standing main pipe 2, lifting pulleys 27 and 28 respectively mounted on the plates, and a motor for driving the pulleys. 24 and a gear box 29, and the mounting plates 25 and 26 are formed in an arc shape along the curved surface of the outer peripheral surface of the standing main pipe 2, and both face the outer peripheral surface of the standing main pipe 2. The two are fastened together by, for example, an appropriate fastening means such as a bolt 30 or the like.

  A driving pulley 27 is attached to the mounting plate 25 via a pair of support plates 31a and 31b, and a driven pulley 28 is pivotally movable to the mounting plate 26 via a pair of stays 32a and 32b. Between the support plates 31a and 31b and the stays 32a and 32b, sticks 33a and 33b having a bolt shape, for example, are arranged in a bridge state, and the sticks are connected to the driving pulley 27 and the driven pulley 28. Is a distance adjusting means for adjusting the distance between the driving pulley 27 and the driven pulley 28, for example, by rotating the nut-like member 34 on the support plates 31a and 31b. The clamping pressure of the hose 8 can be adjusted, and the hose 8 is clamped and pulled up with the required clamping pressure.

  Further, on one mounting plate 25 side, support plates 31a and 31b are fixedly formed, and the hose 8 is positioned between the support plates 31a and 31b so as to face the opening of the standing main pipe 2 in use. The guide roller 35 is provided between the drive shafts 29 a and 29 b on both sides of the gear box 29 driven by the motor 24 and the drive shafts 27 a and 27 b on both sides of the pulley 27. Chains or drive belts 36a, 36b are arranged in a suspended state.

  On the other mounting plate 26 side, a pair of stays 32a and 32b are attached via a shaft 37 so as to be rotatable or pivotable, and a stopper member 38 whose rotation range is restricted is attached to the shaft 37. An adjustment member 39 is provided that abuts against the stopper member 38 and regulates the rotation angle range.

  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.

  In this way, when the elastic body hardness on the contact surface side of the pulleys 27 and 28, that is, Shore A is set slightly lower than the elastic body hardness of the hose 8, the hose 8 is strongly clamped from both sides by the pulleys 27 and 28. The hose 8 hardly deforms and the pulley side is slightly deformed, and since it is made of the same material, it comes into close contact with each other at a set speed without causing slippage between them. In addition, it is possible to pull up the paint while spraying it onto the inner surface of the standing main pipe 2.

  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.

Position further students miscellaneous water pipe 1, by which as substantially vertically pulling the hose 8 over the upper opening of the upright main pipe 2 to the required length, apart from the opening according to the invention in any way Unlike the case where the hose 8 is pulled, the hose 8 itself is not subjected to an excessive bending action, so that the paint supply pipes 20 and 21 housed in the hose 8 are not deformed by pressure, and the main agent and the curing are prevented. A resin coating composed of an agent is appropriately supplied to form an appropriate coating film. And since there is enough space in the height direction of each floor in the high-rise building, it is not necessary to bend the hose 8 by forcibly bending it sideways, so that it is not necessary to increase the hardness of the hose itself. The overall diameter, including the wall thickness, can be reduced by, for example, about 5 to 10 mm compared to the conventional one. Not only can the overall weight be reduced, but the entire hose has become thinner. bending easily, hose routing operations in various construction sites, i.e. preparation also handling of the hose is facilitated, including, and than attained at the same time improving safety, widely further exactly Oite this type existing piping It can be used.

In particular, the hose lifting device according to the present invention includes a pair of arc-shaped plates 25 and 26 to be attached to the upper opening of the standing main pipe 2, and the hose attached to the plates from both sides. Pulleys 27 and 28 for pulling up vertically, gap adjusting means 33a and 33b that can adjust the holding pressure of the hose 8 between these pulleys, and a motor 29 that drives one of these pulleys. By selecting a material that is substantially the same quality as the hose 8 and has an elastic body hardness of Shore A 70 to 90, these pulleys become familiar with the hose 8 and can be pulled up without slipping. Because it does not give an unreasonable bending action or pressing action to the hose 8, it is necessary to increase the elastic body hardness of the hose 8 so much. Therefore, 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, thereby raising the hose 8 used for rehabilitation of the existing piping. It can be widely used.
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 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
19 Junction part 20, 21 Connecting pipe 20a, 21a Coupler 22 Resin layer or paint layer 24 Motor 25, 26 Arc-shaped plate 27, 28 Pulley 27a, 27b Drive shaft 29 Gear box 29a, 29b Drive shaft 30 Bolt 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 39 Adjustment member

Claims (3)

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 pair of arc-shaped plates for attachment to the upper opening of the standing main pipe;
A pulley attached to each of the plates for holding and lifting the hose from both sides;
Between these two pulleys, an interval adjusting means that can adjust the holding pressure of the hose,
It consists of a motor that drives one of these pulleys,
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 is characterized in that Lifting device. The hose pulling device according to claim 1 , wherein the motor that drives the pulley is disposed via a gear box. The pulley that sandwiches the hose has one driving pulley and the other driven pulley.
The driven pulley, the hose of the pulling device according to claim 1 or 2, characterized in that mounted rotatably or pivotal movement via a pair of stays.

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