JP2010209630A - Method of filling horizontal hole cavity - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of filling a horizontal hole cavity capable of filling the hole cavity even if the space thereof is small. <P>SOLUTION: A tube 21A for discharging a polyurethane material is removably affixed onto the outer surface of a tube 11A. The tube 11A and the tube 21A for discharging a polyurethane material are wound up, and while inverting the tube 11A by a tube inverting and feeding device 50A, the tube 11A is inserted into a horizontal hole cavity 80. Consequently, the tube 21A for discharging a polyurethane material is positioned in the tube 11A, and the polyurethane material is discharged from the tube 21A for discharging a polyurethane material into the horizontal hole cavity 80A while retreating the tube 21A, and foamed in the horizontal hole cavity. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for filling a lateral cavity with a polyurethane resin.

  For the purpose of preventing future collapse, prevention of weathering, and prevention of soil outflow in the abandoned mine, air defense pits, cavities existing on the back of tunnel lining concrete, and hollows such as spaces created by the outflow of soil As a filling reinforcement method, there is known a method in which a polyurethane resin that is lightweight and can maintain a suitable compressive strength is foamed on-site and filled into a cavity (Patent Documents 1 and 2). Also, as a method of filling the cavity existing on the back of the tunnel, the work of filling the inside of the bag body projecting from the tunnel supporter toward the cavity to form a buffer body is performed from the tunnel side wall portion to the top end portion. A method of forming a buffer zone made up of a bundle of buffer bodies in a cavity has been proposed (Patent Document 3).

However, according to the conventional method, in the following cases a to d, it is difficult to fill the cavity with the urethane resin while maintaining the quality.
a. When a small cylindrical space (for example, a space having a diameter of 50 mm to 500 mm and a length of 15 m to 30 m) with a single injection hole and no inclination or unevenness inside is filled.
b. When filling a cavity where there is a place to be immersed in seawater at high tide or where rainwater or spring water invades.
c. The existing equipment in the cavity (for example, electric pipes, water supply / drain pipes, telephone vinyl chloride resin pipes, etc.) is fragile and fills the cavity where the equipment may be damaged by the foaming pressure of the polyurethane material discharged into the cavity If.
d. When filling existing cavities that are affected by the foaming heat of polyurethane raw materials (for example, wire pipes, water supply / drain pipes, telephone line vinyl chloride resin pipes, etc.).

JP 2000-282969 A JP 2006-2562 A JP 2007-146522 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a filling method for a side hole cavity that can be filled even when the space is narrow. In addition, if there is a location that is immersed in seawater at high tide, or a location where rainwater, spring water, etc. penetrates is in the cavity, or if existing facilities in the cavity are fragile or affected by heat, It is an object of the present invention to provide a filling method of a side hole cavity that can be filled in a part.

  According to the first aspect of the present invention, in the method for filling the horizontal hole cavity, the polyurethane raw material discharge tube is overlapped on the outer surface of the tube having one end closed and the other end opened. The tube and the polyurethane raw material discharge tube are wound around the rotating shaft in the pressurizing case from the closed one end side of the tube, and the periphery of the open end of the tube is formed in the pressurizing case. The tube is fixed so as to close the delivery opening, and a gas is blown into the pressure case, so that the tube is reversed inside and outside at the tube delivery opening, and the polyurethane raw material discharge tube is inside the tube reversed. The polyurethane material discharge tube together with the tube from the rotating shaft. The polyurethane raw material discharge tube that has been fed into the horizontal hole cavity and is turned into the tube by the folding is inserted into the horizontal hole cavity by the feed, and then the polyurethane raw material discharge tube is While supplying the polyurethane raw material into the polyurethane raw material discharge tube from the side hole side entrance side end, while discharging the polyurethane raw material into the tube from the horizontal hole hollow back end of the polyurethane raw material discharge tube, A polyurethane raw material discharge tube is retracted from the back of the horizontal hole cavity and is extracted from the tube, and the polyurethane raw material is foamed in the tube of the horizontal hole cavity.

  According to a second aspect of the present invention, in the method for filling the horizontal hole cavity, the polyurethane resin is filled in the horizontal hole cavity, and a tube having one end closed and the other end opened is wound around the rotating shaft in the pressure case from the one closed end. The periphery of the opening end of the tube is fixed so as to close the tube delivery opening formed in the pressure case, and the tube delivery opening is formed by blowing gas into the pressure case. Then, the tube is turned inwardly and outwardly while being fed out from the rotary shaft into the horizontal hole cavity, and after the closed one end side of the tube is inserted deep into the horizontal hole cavity by the feed, the tube is made of hard plastic from the open end. The polyurethane raw material discharge tube is inserted into the tube, and the polyurethane raw material is inserted into one closed end of the tube. One end of the discharge tube is disposed, the other end of the polyurethane material discharge tube is positioned at the entrance of the horizontal hole cavity, and the polyurethane material is put into the polyurethane material discharge tube from the other end of the polyurethane material discharge tube. The polyurethane raw material discharge tube is withdrawn from the side of the horizontal hole cavity while the polyurethane raw material is discharged from one end of the polyurethane raw material discharge tube into the tube. The polyurethane raw material is foamed inside.

  According to a third aspect of the present invention, there is provided a method for filling a horizontal hole cavity, in which a polyurethane resin is filled in the horizontal hole cavity, wherein a flexible polyurethane raw material discharge tube is spirally wound from one end side and the polyurethane raw material is wound in the spiral shape. The polyurethane raw material discharge tube is formed by positioning a discharge tube in the entrance of the side hole cavity and press-fitting gas into the polyurethane raw material discharge tube from the spiral outer side end of the polyurethane raw material discharge tube. One end of the polyurethane raw material discharge tube is inserted into the back of the side hole cavity, and the polyurethane raw material is supplied into the polyurethane raw material discharge tube from the other end of the polyurethane raw material discharge tube. The polyurethane material is discharged from one end of the polyurethane material discharge tube into the side hole cavity. While discharging the tongue material, the extraction and the polyurethane raw material discharge tube is retracted from the lateral hole cavity within, characterized in that foaming the polyurethane raw material in the lateral hole cavity.

  A fourth aspect of the invention is characterized in that, when the polyurethane raw material is supplied to the polyurethane raw material discharge tube according to any one of the first to third aspects, a pressurized gas is supplied together with the polyurethane raw material.

  According to the first aspect of the present invention, the polyurethane material discharge tube can be inserted into the horizontal hole cavity together with the tube by inserting the tube into the horizontal hole cavity while inverting the tube. The tube can be inserted and the work is easy. In addition, since polyurethane material is discharged into the tube and foamed in the tube, even if there are places that are immersed in seawater at high tide, or places where rainwater, spring water, etc. invade are in the cavity, the polyurethane material is treated with seawater, rainwater, etc. There is no possibility that the foaming of the polyurethane raw material is hindered without contact. In addition, since polyurethane material is discharged and foamed into a tube inserted into the side hole cavity, the polyurethane material does not come into direct contact with existing equipment in the side hole cavity during foaming, preventing damage to existing equipment due to foaming pressure. Or the influence of heat of foaming can be suppressed.

  According to the second aspect of the present invention, the tube and the polyurethane material discharge tube are inserted even in a narrow space in order to insert the polyurethane raw material discharge tube made of hard plastic into the tube after the tube is inverted and inserted into the side hole cavity. Can be inserted. Furthermore, since polyurethane material is discharged into the tube and foamed in the tube, the polyurethane material should come into contact with seawater, rainwater, etc. even when there are places that are immersed in seawater at high tide or where rainwater or spring water enters. There is no possibility that foaming of the polyurethane raw material is hindered. In addition, since the polyurethane raw material is discharged and foamed into a tube inserted into the side hole cavity, the polyurethane material does not come into contact with the existing equipment in the side hole cavity during foaming, and damage to the existing equipment due to foaming pressure is prevented. The influence of heat of foaming can be suppressed.

  According to the invention of claim 3, by inserting a gas from a spiral outer side end portion into a spirally wound polyurethane raw material discharge tube and extending the spiral portion of the polyurethane raw material discharge tube, Since the polyurethane material discharge tube is inserted into the part, the polyurethane material discharge tube can be inserted into the side hole cavity even in a narrow space, and the polyurethane material is discharged into the side hole cavity through the polyurethane material discharge tube. Thus, it is possible to easily fill the side hole cavity with the polyurethane resin.

  According to the invention of claim 4, when the polyurethane raw material discharge tube is long because the polyurethane raw material is pressurized by the pressurized gas and pumped inside the polyurethane raw material discharge tube toward the inner side end of the horizontal hole cavity That is, even when the side hole cavity is long, the polyurethane material can be discharged into the side hole cavity from the tip of the polyurethane material discharge tube.

It is a schematic sectional drawing of the tube and polyurethane raw material discharge tube in one Example of Claim 1. It is a schematic sectional drawing of the tube wound around the rotating shaft and the polyurethane raw material discharge tube in the Example. It is a schematic sectional drawing which shows the state which accommodated the tube and the polyurethane raw material discharge tube in the pressurization case in the Example. It is a schematic sectional drawing which shows the time of inversion of the tube in the Example. It is a schematic sectional drawing which shows the time of the delivery of the tube and polyurethane raw material discharge tube in the Example. It is a schematic sectional drawing which shows the time of discharge of the polyurethane raw material in the Example, and after completion of filling of a polyurethane resin. It is a schematic sectional drawing of the tube in one Example of Claim 2. It is a schematic sectional drawing of the tube wound up by the rotating shaft in the Example. It is a schematic sectional drawing which shows the state which accommodated the tube in the pressurization case in the Example. It is a schematic sectional drawing which shows the time of inversion of the tube in the Example. It is a schematic sectional drawing which shows the time of the delivery of the tube in the Example. It is a schematic sectional drawing which shows the time of discharge of the polyurethane raw material in the Example, and after completion of filling of a polyurethane resin. It is a schematic sectional drawing of the polyurethane raw material delivery tube in one Example of Claim 3. It is a schematic sectional drawing which shows the state which wound the polyurethane raw material delivery tube in the Example in the shape of a spiral. It is a schematic sectional drawing which shows the time of extending | stretching the spiral part of the polyurethane raw material discharge tube in the Example. It is a schematic sectional drawing which shows the time of discharge of the polyurethane raw material in the Example, and after completion of filling of a polyurethane resin. It is a schematic sectional drawing which shows the connection structure of the polyurethane raw material injection | pouring gun nozzle and the polyurethane raw material discharge tube in each Example.

Hereinafter, the filling method of the side hole cavity part of this invention is demonstrated using drawing. A side hole cavity part consists of the space which arose by the cavity which exists in the back surface of tunnel lining concrete, the outflow of soil, etc.
First, an embodiment of the invention of claim 1 (hereinafter referred to as a first embodiment) will be described with reference to FIGS. In the invention of claim 1, as shown in FIG. 4, the minimum diameter DA of the side hole cavity 80A filled with polyurethane resin is 15 cm or more, and the length (depth) LA is longer than the length SA of the work space. In the case of a large size, or when the inside of the side hole cavity 80A is extremely distorted, it is particularly suitable when it is difficult to insert the straight polyurethane material discharge pipe into the cavity.

In the first embodiment, as shown in FIG. 1, a polyurethane material discharge tube 21A is stacked on the outer surface of the tube 11A, and is detachably fixed.
The tube 11A has a structure in which one end 13A is closed and the other end 15A is opened. The tube 11A has a length corresponding to the length (depth) of the lateral hole cavity and has a diameter that abuts against the inner wall of the lateral hole cavity when expanded. The tube 11A is made of a material having elasticity that allows the tube 11A to expand by press-fitting gas into the tube 11A, such as rubber, polyvinyl chloride, polyethylene, etc., and an air pressure of 0.6 to 0.8 MPa. The heat resistant temperature is preferably 150 ° C. or higher.

  The polyurethane raw material discharge tube 21A is made of a flexible material, for example, a tube made of vinyl chloride resin or polyethylene, and has both ends 23A, 25A open and the same length as the tube 11A. The diameter of the polyurethane raw material discharge tube 21A is preferably about 10 mm to 30 mm. The polyurethane material discharge tube 21A is overlapped on the outer surface of the tube 11A, and both ends of the polyurethane material discharge tube 21A are aligned with both ends of the tube 11A. Fixed. As the detachable fixing means 27A, an adhesive, an adhesive tape or the like is suitable. In the illustrated example, an adhesive tape is used.

  The tube 11A and the polyurethane material discharge tube 21A are wound around the rotating shaft 53A as shown in FIG. 2 from the closed end 13A side of the tube 11A in an overlapped state. As shown in FIG. 3, the rotating shaft 53A is accommodated in a pressurizing case 51A of a tube reversal delivery device 50A. The pressurizing case 51A is provided therein with the rotating shaft (also referred to as a rotating drum) 53A, and a gas pressure inlet 57A and a tube feed opening 59A are formed on the wall surface 55A. The pressurizing case 51A is not limited as long as the gas press-fitted from the gas pressure inlet 57A blows out from the tube feed opening 59A. When the tube 11A is pulled from the opening end 15A side, the rotating shaft 53A rotates in a direction in which the tube 11A and the polyurethane material discharge tube 21A are pulled out, and the tube 11A and the polyurethane material discharge tube 21A are used for feeding the tube. It can be sent out from the opening 59A. A gas supply device (such as an air compressor) (not shown) is connected to the gas pressure inlet 57A. The tube feed opening 59A is formed in a hole shape smaller than the entrance of the side hole cavity. The tube delivery opening 59A is fixed so that the peripheral edge of the opening end 15A of the tube 11A is enlarged in diameter, and the tube delivery opening 59A is closed on the opening side other end 15A side of the tube. ing. The tube reversal delivery device 50A is frequently used in a pipe lining method or the like (see Japanese Patent Application Laid-Open No. 2000-94521, Japanese Utility Model Laid-Open No. 1-108719, etc.) and has a known configuration.

  As shown in FIG. 4 (4-A), the tube feed opening 59A is positioned toward the inside of the inlet 81A of the side hole cavity 80A, and pressurized from the gas pressure inlet 57A into the pressurizing case 51A. Inject gas (compressed air, etc.). By press-fitting gas into the pressurizing case 51A, as shown in FIG. 4 (4-B), in the tube delivery opening 59A, the vicinity of the opening side other end 15A of the tube 11A is outward (feeding direction). In other words, the inner and outer surfaces of the tube 11A are reversed by being pressed into the inner side of the side hole cavity 80A), and gas is press-fitted into the inverted tube 11A from the pressure case 51A, thereby (5-A) in FIG. Through the rotary shaft 53A, the tube 11A is fed out and inserted into the side of the side hole cavity 80A while expanding and expanding the diameter as in (5-C).

  When the tube 11A is delivered, the polyurethane raw material discharge tube 21A that is overlaid on the outer surface of the tube 11A before inversion is inverted inside (inverted) of the tube 11A by inversion of the inner and outer surfaces of the tube 11A. It is pulled out from the rotating shaft 53A together with the tube 11A and fed into the side hole cavity 80A while being folded back (front outside). When the tube 11A and the polyurethane material discharge tube 21A are all sent out, the polyurethane material discharge tube 21A is positioned in the inverted tube 11A as shown in FIG. 5 (5-C). And one end 23A is inserted in the back of the said horizontal hole cavity part 80A, and the other end 25A will be in the state located in the entrance side of the said horizontal hole cavity part 80A.

  Next, the other end 15A on the opening side of the tube 11A is removed from the tube feeding opening 59A of the pressurizing case 51A, and the other end 25A on the inlet side of the horizontal hole in the polyurethane raw material discharge tube 21A is pulled. The polyurethane raw material discharge tube 21A is detached from the tube 11A. Thereafter, as shown in (6-A) of FIG. 6, the other end 25A on the side of the horizontal hole cavity of the polyurene raw material discharge tube 21A is connected to a supply port 90 of a polyurethane raw material supply device, and the polyurethane raw material supply A polyurethane raw material P is supplied from the apparatus into the polyurene raw material discharge tube 21A, and discharged from the one end 23A of the polyurene raw material discharge tube 21A into the tube 11A in the side hole cavity 80A. As shown in FIG. 17, the supply port 90 of the polyurethane raw material supply device has a configuration in which an air mixing chamber 93 is attached to an injection gun nozzle 91 of a known polyurethane raw material supply device, and the polyurethane raw material is inserted into the air mixing chamber 93. The other end 25A on the inlet side of the side hole cavity of the discharge tube 21A is connected. The air mixing chamber 93 is supplied with a pressurized gas (for example, compressed air) from a pressurized gas supply device (not shown), and the polyurethane raw material supplied from the injection gun nozzle 91 is pressurized to discharge the polyurene raw material. It is pumped into the tube 21A and discharged from one end 23A of the polyurene raw material discharge tube 21A into the tube 11A in the side hole cavity 80A. As the polyurethane raw material, a known hard polyurethane foam raw material comprising a polyol component (A component) and an isocyanate component (B component) is suitable.

  As shown in (6-A) and (6-B) of FIG. 6, the polyurethane raw material P is discharged into the tube 11A from one end of the polyurethane raw material discharge tube 21A from the back of the side hole cavity 80A to the entrance side. This is done while retracting (tip) 23A. Accordingly, the polyurethane raw material P can be discharged into the tube 11A in order from the back of the side hole cavity 80A. The backward movement of the polyurethane material discharge tube 21A is performed by winding the polyurethane material discharge tube 21A in an annular shape, an 8-shape or the like in the vicinity of the entrance of the side hole cavity 80A. The polyurethane raw material P in the tube 11A is foamed to become a polyurethane resin P1 as shown in FIG. 6 (6-C), and is filled in the side hole cavity 80A.

  An embodiment (hereinafter referred to as a second embodiment) of the invention of claim 2 will be described with reference to FIGS. In the invention of claim 2, as shown in FIG. 10, the minimum diameter DB of the side hole cavity 80B filled with polyurethane resin is 15 cm or more, and the length (depth) LB is longer than the length SB of the work space. It is particularly suitable when it is short and there is little extreme distortion inside the side hole cavity 80B.

  In the second embodiment, as shown in FIG. 7, a tube 11B having one end 13B closed and the other end 15B opened is used. The tube 11B has a length corresponding to the length (depth) of the lateral hole cavity and has a diameter that abuts against the inner wall of the lateral hole cavity when expanded. The tube 11B is made of a stretchable material such as rubber that can expand the tube 11B by press-fitting gas into the tube 11B, and can withstand an air pressure of 0.6 to 0.8 MPa. And the thing whose heat-resistant temperature is 150 degreeC or more is preferable.

  The tube 11B is wound around the rotating shaft 53B from the closed one end 13B side as shown in FIG. As shown in FIG. 9, the rotating shaft 53B is accommodated in a pressurizing case 51B of a tube reversing delivery device 50B. The pressurizing case 51B is provided with the rotating shaft (also referred to as a rotating drum) 53B inside, and a gas pressure inlet 57B and a tube feed opening 59B are formed on the wall surface 55B. The pressurizing case 51B is not limited as long as the gas press-fitted from the gas pressure inlet 57B blows out from the tube delivery opening 59B. When the tube 11B is pulled from the opening side other end 15B side, the rotating shaft 53B rotates in a direction in which the tube 11B is pulled out, and the tube 11B can be sent out from the tube delivery opening 59B. A gas supply device (such as an air compressor) (not shown) is connected to the gas pressure inlet 57B. The tube delivery opening 59B is formed in a hole shape smaller than the entrance of the side hole cavity. The tube delivery opening 59B is fixed so that the peripheral edge of the opening side other end 15B of the tube 11B is enlarged, and the tube delivery opening 59B is closed on the opening side other end 15B side of the tube. ing. The tube reversal delivery device 50B is widely used in a pipe lining method or the like (see Japanese Patent Laid-Open No. 2000-94521, Japanese Utility Model Laid-Open No. 1-108719, etc.) and has a well-known configuration.

  As shown in FIG. 10 (10-A), the tube feed opening 59B is positioned toward the inside of the inlet 81B of the side hole cavity 80B, and is pressurized from the gas pressure inlet 57B into the pressure case 51B. Inject gas (compressed air, etc.). By press-fitting gas into the pressurizing case 51B, as shown in (10-B) of FIG. 10, the vicinity of the other end 15B on the opening side of the tube 11B is outward in the tube delivery opening 59B (feeding direction). In other words, the inner and outer surfaces of the tube 11B are reversed by being pressed into the inner side of the hollow hole 80B), and the gas is press-fitted into the inverted tube 11B from the pressure case 51B. As in (11-C), the tube 11B is fed out from the rotating shaft 53B, and is inserted into the side hole cavity 80B while expanding and expanding in diameter.

  Next, the opening-side other end 15B of the tube 11B is removed from the tube-feeding opening 59B of the tube reversing-feeding device 50B, and from the opening other end 15B side of the tube 11B as shown in (12-A) of FIG. Then, a polyurethane material discharge tube 21B made of hard plastic (for example, hard vinyl chloride resin) is inserted into the tube 11B of the side hole cavity 80B. Then, one end (tip) 23B of the polyurethane raw material discharge tube 21B is disposed in the closed end 13B side of the tube 11B located in the back of the horizontal hole cavity 80B, and the other polyurethane raw material discharge tube 21B. The end 25B is positioned outside the side hole cavity 80B.

  Thereafter, the other end 25B of the polyurethane raw material discharge tube 21B located outside the horizontal hole cavity 80B is connected to the supply port 90 of the polyurethane raw material supply device, and the polyurethane raw material supply device is connected to the polyurethane raw material supply device. The polyurethane raw material P is supplied into the discharge tube 21B and discharged from the one end (tip) 23B of the polyurene raw material discharge tube 21B into the tube 11B in the side hole cavity 80B. As shown in FIG. 17, the supply port 90 of the polyurethane raw material supply device has a configuration in which an air mixing chamber 93 is attached to an injection gun nozzle 91 of a known polyurethane raw material supply device, and the polyurethane raw material is inserted into the air mixing chamber 93. The other end 25B of the discharge tube 21B on the entrance side of the side hole cavity is connected. The air mixing chamber 93 is supplied with a pressurized gas (for example, compressed air) from a pressurized gas supply device (not shown), and the polyurethane raw material supplied from the injection gun nozzle 91 is pressurized to discharge the polyurene raw material. It is pumped into the tube 21B and discharged from the one end 23B of the polyurene raw material discharge tube 21B into the tube 11B in the side hole cavity 80B. As the polyurethane raw material, a known hard polyurethane foam raw material comprising a polyol component (A component) and an isocyanate component (B component) is suitable.

  The polyurethane material P is discharged into the tube 11B as shown in (12-A) and (12-B) of FIG. 12 from one end of the polyurethane material discharging tube 21B from the back of the side hole cavity 80B to the entrance side. This is done while retracting (tip) 23B. Thereby, the polyurethane raw material P can be discharged into the tube 11B in order from the back of the side hole cavity 80B. The polyurethane material discharge tube 21B is retracted by retracting the supply port 90 of the polyurethane material supply device together with the polyurethane material discharge tube 21B from the side hole cavity 80B. The polyurethane raw material P in the tube 11B is foamed and becomes a polyurethane resin P1 as shown in FIG. 8 (8-C) and is filled in the side hole cavity 80B.

  An embodiment of the invention of claim 3 (hereinafter referred to as a third embodiment) will be described with reference to FIGS. As shown in FIG. 15, the invention of claim 3 is particularly suitable when the diameter DC of the side hole cavity 80C filled with polyurethane resin is 15 cm or less.

  In the third embodiment, as shown in FIG. 13, a polyurene material discharge tube 21C having both ends 23C and 25C opened is used. As shown in FIG. 15, the polyurene raw material discharge tube 21C has a length corresponding to the length (depth) of the horizontal hole cavity 80C filled with polyurethane resin, and has a minimum diameter DC of the horizontal hole cavity. It consists of a flexible tube such as a vinyl chloride resin or polyethylene tube having the following diameter.

  As shown in FIG. 14, the polyurethane material discharge tube 21C is spirally wound from the one end 23C side. The diameter E of the spiral portion 29C is made smaller than the diameter DC of the side hole cavity 80C. As shown in (15-A) of FIG. 15, the spiral raw material discharge tube 21C is spirally wound in the inlet side end (inlet 81C) of the horizontal hole cavity 80C. 15C from the spiral outer side end portion (the other end opposite to the spiral center side one end 23C) 25C of the polyurethane raw material discharge tube 21C as shown in FIG. Then, by injecting a gas (pressurized air or the like) into the polyurethane raw material discharge tube 21C, the spiral portion 29C of the polyurethane raw material discharge tube 21C is stretched inward of the horizontal hole cavity, as shown in FIG. 15C), one end (tip) 23C of the polyurethane raw material discharge tube 21C is inserted into the back of the side hole cavity 80C.

  Thereafter, as shown in (16-A) of FIG. 16, the other end 25C on the side of the side hole cavity portion located outside the side hole cavity 80C in the polyurene material discharge tube 21C is connected to the supply port 90 of the polyurethane material supply apparatus. The polyurethane raw material P is supplied from the polyurethane raw material supply device into the polyurene raw material discharge tube 21C, and discharged from the one end (tip) 23C of the polyurene raw material discharge tube 21C into the side hole cavity 80C. As shown in FIG. 17, the supply port 90 of the polyurethane raw material supply device has a configuration in which an air mixing chamber 93 is attached to an injection gun nozzle 91 of a known polyurethane raw material supply device, and the polyurethane raw material is inserted into the air mixing chamber 93. The other end 25C of the discharge tube 21C on the entrance side of the side hole cavity is connected. The air mixing chamber 93 is supplied with a pressurized gas (for example, compressed air) from a pressurized gas supply device (not shown), and the polyurethane raw material supplied from the injection gun nozzle 91 is pressurized to discharge the polyurene raw material. It is pumped into the tube 21C and discharged from the one end 23C of the polyurene raw material discharge tube 21C into the side hole cavity 80C. As the polyurethane raw material, a known hard polyurethane foam raw material comprising a polyol component (A component) and an isocyanate component (B component) is suitable.

  As shown in (16-B) of FIG. 16, the polyurethane raw material P is discharged into the horizontal hole cavity 80C from one end (tip) 23C of the polyurethane raw material discharge tube 21C from the back of the horizontal hole cavity 80C to the entrance side. Execute while retreating. Thereby, the polyurethane raw material P can be discharged sequentially from the back of the side hole cavity 80C. The backward movement of the polyurethane material discharge tube 21C is performed by winding the polyurethane material discharge tube 21C in an annular shape, an 8-shape, or the like in the vicinity of the entrance of the side hole cavity 80C. The polyurethane raw material P in the horizontal hole cavity 80C is foamed and becomes a polyurethane resin P1 as shown in FIG. 16 (16-C) and is filled in the horizontal hole cavity 80C.

  As described above, according to the first and second embodiments, the polyurethane resin can be filled by easily inserting the tube and the polyurethane raw material discharge tube into the side hole cavity even in a narrow space. Furthermore, since polyurethane material is discharged into the tube and foamed in the tube, the polyurethane material should come into contact with seawater, rainwater, etc. even when there are places that are immersed in seawater at high tide or where rainwater or spring water enters. There is no possibility that foaming of the polyurethane raw material is hindered. In addition, since the polyurethane raw material is discharged and foamed into a tube inserted in the side hole cavity, the polyurethane material does not come into contact with the existing equipment in the side hole cavity during foaming, preventing damage to the existing equipment or the influence of heat. Can be suppressed.

  On the other hand, according to the third embodiment, the polyurethane material discharge tube can be inserted into the side hole cavity even in a narrow space, and the polyurethane material is discharged into the side hole cavity through the polyurethane material discharge tube. The polyurethane resin can be easily filled in the side hole cavity.

11A, 11B Tube 21A, 21B, 21C Polyurethane raw material discharge tube 51A, 51B Pressurizing case 59A, 59B Tube feed opening 80A, 80B, 80C Horizontal hole cavity P Polyurethane raw material P1 Polyurethane resin

Claims (4)

In the filling method of the horizontal hole cavity part in which the polyurethane resin is filled in the horizontal hole cavity part,
A polyurethane raw material discharge tube is overlapped on the outer surface of the tube with one end closed and the other end opened, and is detachably fixed. The tube and the polyurethane raw material discharge tube are closed to the rotating shaft in the pressure case. Take up from one end,
About the periphery of the opening end of the tube, it is fixed so as to close the tube delivery opening formed in the pressure case,
By blowing gas into the pressurizing case, the tube feed opening is reversed inside and outside the tube feed opening, and the polyurethane material discharge tube is turned inside the inverted inside of the tube, and the polyurethane material discharge is performed together with the tube. The tube for feeding from the rotary shaft into the side hole cavity,
After inserting the tube and the polyurethane raw material discharge tube that has been inside the tube by the folding back to the back of the side hole cavity by the delivery,
A polyurethane raw material is supplied into the polyurethane raw material discharge tube from the end of the polyurethane raw material discharge tube at the side of the horizontal hole cavity, and from the inner end of the horizontal hole hollow portion of the polyurethane raw material discharge tube into the tube. While discharging the polyurethane raw material, the polyurethane raw material discharge tube is retracted from the inner side of the horizontal hole cavity to be extracted from the tube, and the polyurethane raw material is foamed in the tube of the horizontal hole cavity. Part filling method. In the filling method of the horizontal hole cavity part in which the polyurethane resin is filled in the horizontal hole cavity part,
Winding a tube with one end closed and the other end open from the closed one end to the rotating shaft in the pressure case,
About the periphery of the opening end of the tube, it is fixed so as to close the tube delivery opening formed in the pressure case,
By blowing gas into the pressurizing case, the tube is turned inside and out at the tube feed opening, and the tube is fed from the rotary shaft into the side hole cavity. After inserting to the back of the cavity,
A polyurethane plastic material discharge tube made of hard plastic is inserted into the tube from the open end of the tube, and one end of the polyurethane material discharge tube is disposed within the closed one end side of the tube, and the polyurethane material discharge The other end of the tube for use is positioned at the entrance of the side hole cavity,
The polyurethane raw material discharge tube is configured to supply the polyurethane raw material into the polyurethane raw material discharge tube from the other end side of the polyurethane raw material discharge tube and discharge the polyurethane raw material into the tube from one end of the polyurethane raw material discharge tube. The horizontal hole cavity filling method, wherein the polyurethane raw material is foamed in the tube of the horizontal hole cavity by retreating from the inside of the horizontal hole cavity. In the filling method of the horizontal hole cavity part in which the polyurethane resin is filled in the horizontal hole cavity part,
A flexible polyurethane raw material discharge tube is wound in a spiral shape from one end side, and the polyurethane raw material discharge tube wound in the spiral shape is positioned in the entrance of the side hole cavity,
By injecting gas into the polyurethane material discharge tube from the spiral outer side end portion of the polyurethane material discharge tube, the spiral portion of the polyurethane material discharge tube is stretched to the back of the side hole cavity. Insert one end of the polyurethane material discharge tube into
The polyurethane material is supplied from the other end of the polyurethane material discharge tube into the polyurethane material discharge tube, and the polyurethane material is discharged from one end of the polyurethane material discharge tube into the side cavity. A method of filling a horizontal hole cavity, wherein the tube is retracted and extracted from the horizontal hole cavity, and the polyurethane raw material is foamed in the horizontal hole cavity.   4. The filling method for a side hole cavity according to claim 1, wherein when the polyurethane raw material is supplied to the polyurethane raw material discharge tube, a pressurized gas is supplied together with the polyurethane raw material. 5.

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