JP2006192886A - Molding method of frp molded product, frp product, frp product for waterway, river, lake and marsh and seashore including stop log or its part made of frp, footpath bridge made of frp or its part made of frp and footboard made of frp of control bridge or footpath bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve the enhancement of the strength of an FRP molded product and the shortening of a molding time by raising molding pressure and a molding temperature and accelerating a molding speed in a hand lay-up method. <P>SOLUTION: A mold is prepared (S1-S4) to execute the process of the hand lay-up method. A glass cloth is laid within the mold (S5) to cast an unsaturated polyester resin, a curing agent and a curing accelerator in the mold and the cast composition is leveled using a coating roll by a worker (S6). A glass mat is laid on the formed laminate (S7) to cast the unsaturated polyester resin and the curing accelerator on the glass mat and the surface leveling lamination using the coating roll by the worker is performed for about 5 min (S8) and repeated until the laminate becomes a predetermined thickness to be completed after about 1 hr. A pressing machine equipped with a heater is placed on the laminate to press the laminate under a pressure of about 0.7 kgf/cm<SP>2</SP>by the pressing machine while heating the same at about 140°C (S9). The air in the laminate is expeled to bring the laminate to a dense structure and the dense laminate is heated at a high temperature to obtain the FRP molded product having high strength. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  INDUSTRIAL APPLICABILITY The present invention is a method for forming an FRP molded body composed of an FRP (fiber reinforced plastic) molded body by a hand lay-up method that is inexpensive and excellent in aesthetics and strength, and for waterways, rivers, lakes, and coasts including FRP products and corner drops. It relates to products or parts thereof and footbridges of footbridges or parts thereof and management bridges or footbridges.

  In this specification, claims and abstract, the term “thermosetting resin” refers to not only a compound that is heated from the outside and crosslinked and cured, but also self-heating by adding a curing agent. It also includes a compound that crosslinks and cures.

  As a molding method of a high-strength FRP molded body, a hand lay-up method in which an operator manually laminates a fiber material such as a glass roving cloth and a thermosetting resin with a coating roll while putting them in a mold, A continuous molding method in which a fiber chopped strand mat described in Patent Document 1 is impregnated with resin and cured by heating through a mold and a heating furnace, and a fiber using a mold and a press described in Patent Document 2 There are various molding methods such as a hot-pressing molding method in which a chopped strand mat is cut and set in accordance with a mold, and a resin is flowed thereon to pressurize.

  On the other hand, sluice door bodies that open and close water channels such as rivers have recently been manufactured with FRP molded bodies. In the continuous molding method, it is difficult to form a door body reinforced with a complicated girder, and the equipment cost is large and the cost is high. According to the heat and pressure molding method, a door body with a complicated girder can be molded, and several products of uniform quality can be obtained. Various sizes and shapes differ depending on the size. In the heat and pressure molding method, one expensive mold must be prepared to make one door body, which is practically impossible.

On the other hand, the hand lay-up method is inexpensive in mold material and has no restriction on the size of the molded product. Therefore, it is suitable for high-mix low-volume production of various sluice doors of different sizes and shapes. Therefore, the present inventor has disclosed a method for producing an FRP molded body by a heating / pressurizing hand lay-up method in Patent Document 3 in order to compensate for the disadvantage of the hand lay-up method that the product strength is inferior. . Since the FRP molded body by this manufacturing method has high strength, there are various lengths, heights and shapes, and the FRP molded body by the heating / pressurizing hand lay-up method can be used for sluice door bodies that require strength. Can be applied and has already been put to practical use.
JP-A-8-25395 JP 2000-176953 A JP 2004-42610 A

  In the heating / pressurizing type hand lay-up method according to the above-mentioned special reference 3, the thermosetting resin is temporarily cured (highly viscous) at a low temperature for each layer in the process of laminating by manual work. While preventing slippage and preventing the fiber material such as glass roving cloth laminated with a liquid thermosetting resin from dripping and collecting below, the heating / In addition to the pressure-type hand lay-up method, the present inventor prevents a liquid material such as a glass roving cloth laminated with a thermosetting resin in a liquid state from being accumulated under the high strength FRP molded body. A heat / pressure type hand layup method has been developed.

  Therefore, the present invention uses an FRP molded body based on the hand lay-up method to further reduce the weight and cost of parts subjected to high stress, so that an FRP molded body with high strength can be obtained. It is an object of the present invention to provide a body molding method and FRP products, products for waterways, rivers, lakes, and shores including corner drops, or parts thereof, and footbridges or parts thereof, and management bridges or footboards of footbridges.

The method for molding an FRP molded body according to the invention of claim 1 is a method for molding an FRP molded body by a hand lay-up method, a step of assembling a mold, a step of applying a mold release agent to the inner surface of the mold, A step of applying a gel coat from above the mold release agent on the inner surface of the mold, a step of heating and curing the gel coat by a heating means provided under the mold, a fiber roving cloth on the gel coat, and And / or laminating a fiber chopped strand mat and / or fiber roving, and applying a thermosetting resin containing a curing agent and a curing accelerator on the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving. Repeating the steps of applying with a roll until the molded body reaches a predetermined height; By installing a pressing means having a heating means, evacuated in the compact with by applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² to a predetermined thickness While, the step of heating the molded body at a temperature in the range of room temperature to about 140 ° C. by the heating means and the second heating means, and the step of releasing from the mold after the molded body has cooled. The fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving are laminated, and the thermosetting resin containing a curing agent and a curing accelerator is added to the fiber roving cloth and / or the fiber chopped strand mat and / or Alternatively, the step of repeating the procedure of applying with a coating roll from the top of the fiber roving until the molded body reaches a predetermined height is repeated for about 1 minute. The process is performed for about 30 minutes, and the entire process is performed for about 10 minutes to about 5 hours.

According to a second aspect of the present invention, there is provided a method for molding an FRP molded body, wherein the pressure applied to the molded body is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ^2. is there.

  According to a third aspect of the present invention, there is provided a method for forming an FRP molded body, comprising the steps of laminating the fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving in the configuration of the first or second aspect, And a step of applying a thermosetting resin containing a curing accelerator on the fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving with an application roll until the molded body reaches a predetermined height. Is one repetition between about 5 minutes and about 15 minutes, and the entire process is between about 30 minutes and about 2.5 hours.

  According to a fourth aspect of the present invention, there is provided a method for forming the FRP molded body, wherein the fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving is laminated in any one of the first to third aspects. And a step of applying the thermosetting resin containing the curing agent and the curing accelerator from above the fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving to the molded body having the predetermined height. Before and after the process of repeating until it is completed, the process of laminating a vinylon roving cloth and applying the thermosetting resin containing the curing agent and the curing accelerator is performed once or several times.

  According to a fifth aspect of the present invention, there is provided a method for forming an FRP molded body according to any one of the first to fourth aspects, wherein the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving is an aramid fiber. A roving cloth, an aramid fiber chopped strand mat or an aramid fiber roving.

  An FRP product according to a sixth aspect of the invention is obtained by processing an FRP molded body molded by the method for molding an FRP molded body according to any one of the first to fifth aspects.

The FRP product for waterways / rivers / lakes / shores including a corner drop according to the invention of claim 7 or its FRP parts is assembled by assembling the mold of the waterway / river / lake / coast products or parts including the corner drops. A mold is applied, a gel coat is further applied and heated to be cured, and a carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving are laminated on the gel coat, and the curing agent and the curing are applied. Applying the thermosetting resin containing the accelerator from above the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving for about 1 minute to about 30 minutes at a time. By repeating the above, carbon fiber roving cloth and / or carbon fiber until a predetermined height is reached within about 10 minutes to about 5 hours ®-up de strand mat and / or laminated carbon fiber roving and the thermosetting resin to form a molded body, multiplied by the pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² The molded body is formed by heating the molded body at a temperature in the range of room temperature to about 140 ° C. while taking a predetermined thickness and a cross-sectional shape and removing air from the molded body.

The FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 8 or its FRP parts is assembled by assembling the mold of the waterway, river, lake, shore product including the corner drops, or its parts. A mold is applied, a gel coat is further applied and heated to be cured, and a carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving are laminated on the gel coat, and the curing agent and the curing are applied. A thermosetting resin containing an accelerator is applied from above the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving, and the glass roving cloth and / or the glass chopped strand mat and / or the glass roving Laminated on the thermosetting resin, the thermosetting resin is Applying over the roving cloth and / or glass chopped strand mat and / or glass roving between about 10 minutes and about 5 hours by repeating the application between about 1 minute and about 30 minutes at a time. The carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving, the thermosetting resin, the glass roving cloth and / or the glass chopped strand mat and / or the glass roving until a predetermined height is reached. A molded body is formed by laminating, and a pressure in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² is applied thereto to obtain a predetermined thickness and cross-sectional shape, and air in the molded body is evacuated. However, the molded body is formed by heating at a temperature ranging from room temperature to about 140 ° C. It is a thing.

The FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 9 or its FRP parts is assembled by assembling the mold of the waterway, river, lake, shore product or parts including the corner drop. A mold agent is applied, a gel coat is further applied and heated to be cured, a hybrid fiber roving cloth made of carbon fiber and glass fiber is laminated on the gel coat, and a thermosetting resin containing a curing agent and a curing accelerator. By applying from the top of the hybrid fiber roving cloth for about 1 minute to about 30 minutes each time until the predetermined height is reached within about 10 minutes to about 5 hours. by laminating a hybrid fiber roving cloth with the thermosetting resin to form a molded body, it is multiplied by a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² While it deflated in the molded body as well as a constant thickness and cross-sectional shape, and is formed by heating the green body at a temperature in the range of room temperature to about 140 ° C..

The FRP pedestrian bridge or its FRP component according to the invention of claim 10 is formed by assembling the mold of the pedestrian bridge or its component, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or Alternatively, the carbon fiber roving is applied from about 1 minute to about 30 minutes at a time until the carbon fiber is robbed until the predetermined height is reached within about 10 minutes to about 5 hours. Roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving The curable resin is laminated to form a green body, it air in the compact with by applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² to a predetermined thickness It is formed by heating the molded body at a temperature in the range of room temperature to about 140 ° C. while pulling.

The FRP pedestrian bridge or its FRP component according to the invention of claim 11 is prepared by assembling a mold of the pedestrian bridge or its component, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or Alternatively, it is applied from above the carbon fiber roving, and a glass roving cloth and / or a glass chopped strand mat and / or a glass roving is laminated on the thermosetting resin, and the thermosetting resin is applied to the glass roving cloth and / or Glass chopped strand mat The carbon fiber is applied from about 1 minute to about 30 minutes at a time until it reaches a predetermined height in about 10 minutes to about 5 hours by applying from the top of the glass roving for about 1 minute to about 30 minutes. Roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving, the thermosetting resin and the glass roving cloth and / or glass chopped strand mat and / or glass roving are laminated to form a molded body, Applying a pressure in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² to give a predetermined thickness and venting air in the molded body, the molded body is in the range of room temperature to about 140 ° C. It was formed by heating at a temperature of

The FRP pedestrian bridge or its FRP component according to the invention of claim 12 is formed by assembling the mold of the pedestrian bridge or its component, applying a release agent, further applying a gel coat and heating to cure, , A hybrid fiber roving cloth made of carbon fiber and glass fiber is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied from above the hybrid fiber roving cloth for about 1 minute to about 30 minutes per time The hybrid fiber roving cloth and the thermosetting resin are laminated until a predetermined height is obtained in about 10 minutes to about 5 hours, and a molded body is formed. while deflated in the green body while a predetermined thickness by applying a pressure in the range of .01kgf / cm ² ~ about 1.6 kgf / cm ^2, the molded body , All of which are formed by heating at a temperature in the range of room temperature to about 140 ° C..

The FRP footboard of the management bridge or footbridge according to the invention of claim 13 is constructed by assembling the mold of the footboard of the management bridge or footbridge, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving is laminated thereon, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or carbon fiber chopped strand mat. And / or by applying the carbon fiber roving from above for about 1 minute to about 30 minutes each time until the predetermined height is reached within about 10 minutes to about 5 hours. Carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving By laminating a serial thermosetting resin to form a molded body, it of the molded body while the predetermined thickness by applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² It is formed by removing air, spreading gravel on the surface, and heating the molded body at a temperature ranging from room temperature to about 140 ° C.

The FRP footboard of the management bridge or footbridge according to the invention of claim 14 is constructed by assembling the mold of the footboard of the management bridge or footbridge, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving is laminated thereon, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or carbon fiber chopped strand mat. And / or coating from above the carbon fiber roving, laminating a glass roving cloth and / or glass chopped strand mat and / or glass roving on the thermosetting resin, and applying the thermosetting resin to the glass roving cloth and / Or glass chopped strand mat And / or by applying the glass roving from above for about 1 minute to about 30 minutes, until the carbon reaches a predetermined height for about 10 minutes to about 5 hours. A fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving, the thermosetting resin, the glass roving cloth and / or glass chopped strand mat and / or glass roving are laminated to form a molded body, A pressure in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² is applied to obtain a predetermined thickness, and air in the molded body is evacuated so that gravel is spread on the surface. It is formed by heating at a temperature ranging from room temperature to about 140 ° C.

The FRP footboard of the management bridge or footbridge according to the invention of claim 15 is constructed by assembling the mold of the footboard of the management bridge or footbridge, applying a release agent, further applying a gel coat and heating to cure, On top of that, a hybrid fiber roving cloth made of carbon fiber and glass fiber is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied from above the hybrid fiber roving cloth. By repeating the process for 30 minutes, the hybrid fiber roving cloth and the thermosetting resin are laminated until a predetermined height is reached within about 10 minutes to about 5 hours, thereby forming a molded body. applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² to remove the air in the molded body as well as to a predetermined thickness, the sand on the surface Seeded, and forming by heating the green body at a temperature in the range of room temperature to about 140 ° C..

An FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 16 or an FRP part thereof, an FRP pedestrian bridge or an FRP part thereof, or an FRP footboard of a management bridge or an pedestrian bridge The pressure applied to the molded body is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² .

  An FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 17 or an FRP part thereof, an FRP pedestrian bridge or an FRP part thereof, or an FRP footboard of a management bridge or an pedestrian bridge The composition according to any one of claims 16 to 16, wherein the lamination is repeated for about 5 minutes to about 15 minutes per time, and the green body is laminated for about 30 minutes to about 2.5 hours. Is.

  An FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 18 or an FRP part thereof, an FRP footbridge or an FRP part thereof, or an FRP footboard of a management bridge or footbridge The structure of any one of Claims 17 thru | or 17 WHEREIN: The procedure which laminates | stacks the said fiber roving cloth and / or the fiber chopped strand mat, and / or the fiber roving, The said thermosetting resin containing a hardening | curing agent and a hardening accelerator is said fiber roving. Before and after the step of repeating the procedure of applying the cloth and / or the fiber chopped strand mat and / or the fiber roving from the top until the molded body of the predetermined height is obtained, the vinylon roving cloth is laminated and The process of applying a thermosetting resin containing a curing agent and a curing accelerator once each It is performed several times.

  An FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 19 or an FRP part thereof, an FRP footbridge or an FRP part thereof, or an FRP footboard of a management bridge or an footbridge The structure according to any one of claims 18 to 18, wherein the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving is a glass roving cloth, glass chopped strand mat or glass roving.

  An FRP product for waterways / rivers / lakes / coasts including a corner drop according to the invention of claim 20 or an FRP part thereof, an FRP footbridge or an FRP part thereof, or an FRP footboard of a management bridge or footbridge, The composition according to any one of claims 18 to 18, wherein the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving is an aramid fiber roving cloth, an aramid fiber chopped strand mat or an aramid fiber roving.

The molding method of the FRP molded body according to the invention of claim 1 is a molding method of an FRP molded body by a hand lay-up method, the step of assembling the mold, the step of applying a release agent to the inner surface of the mold, A step of applying a gel coat from above the release agent on the inner surface of the substrate, a step of heating and curing the gel coat by heating means provided under the mold, a fiber roving cloth and / or a fiber chopped strand on the gel coat A procedure for laminating a mat and / or fiber roving, and a procedure for applying a thermosetting resin containing a curing agent and a curing accelerator on a fiber roving cloth and / or fiber chopped strand mat and / or fiber roving by an application roll. And a pressurizing unit having a second heating unit on the upper surface of the molded body. Installed, about 0.01 kgf / cm ² ~ about 1.6 kgf / cm by applying a pressure of ² ranges while venting the air in the compact as well as a predetermined thickness, the compact heating means and the second A step of heating at a temperature in the range of room temperature to about 140 ° C. by the heating means, and a step of releasing from the mold after the molded body has cooled, and a fiber roving cloth and / or a fiber chopped strand mat and / or The molded body includes a procedure for laminating fiber roving and a procedure for applying a thermosetting resin containing a curing agent and a curing accelerator on the fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving by an application roll. In the process of repeating until a predetermined height is reached, one repetition is performed for about 1 minute to about 30 minutes, and the entire process is performed for about 10 minutes to about 5 hours. It is said that.

  Here, examples of the “fiber” include glass fiber, carbon fiber, aramid fiber, and mixed fiber thereof. Examples of the “thermosetting resin” include unsaturated polyester resins, epoxy resins, polyvinyl ester resins, phenol resins, urea resins, melamine resins, alkyd resins, and urethane resins.

The molding method of the FRP molded body according to the present invention differs from the molding method of the FRP molded body according to Patent Document 3 described above in that a thermosetting resin containing a curing agent and a curing accelerator is used as the thermosetting resin to be applied. The point that it was hardened at a low temperature (high viscosity) every time the thermosetting resin was applied, and the time required for one repetition of the lamination was about 1 to 30 minutes. The time required for the laminating process is limited to the range of about 10 minutes to about 5 hours, and the applied pressure is expanded to the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ^2. is there.

  As a result, even if the thermosetting resin is not heated, it gradually crosslinks over time and the viscosity increases.Therefore, even if lamination proceeds, there is no risk of sinking under the fiber roving cloth etc. Since the thermosetting resin begins to harden before the body reaches a predetermined height, the laminating process is performed for about 10 minutes to about 5 hours in one time within about 1 minute to about 30 minutes. This process must be performed within a short time, and the process is shortened, leading to cost reduction. The reason why the time ranges are as wide as about 1 minute to about 30 minutes and about 10 minutes to about 5 hours is that the area varies greatly depending on the product.

Further, as a result of further earnest experimental research by the inventor, if the pressure applied to the laminated molded body is in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² , the molded body can withstand practical use. Turned out to be possible. The present inventor has completed the present invention on the basis of such knowledge. Specifically, the inventor has a sufficiently strong molded body even at a pressure as small as about 0.01 kgf / cm ² , and is about 1.6 kgf / cm. ^A high-strength molded body can be obtained without extruding the laminated thermosetting resin even under a large pressure of ² . If the pressure is lower than about 0.01 kgf / cm ² , there is no effect of pressurization, and if the pressure is higher than about 1.6 kgf / cm ² , the laminated thermosetting resin will be extruded, and sufficient adhesive strength will be obtained. Can't get.

  According to such a molding method, the molded body laminated by the pressurizing means is compressed, so that the inside air is released and the molded body has few voids. At the same time, since the molded body is heated by the heating means and the second heating means, the curing rate is accelerated to increase the strength of the molded body, and the molding cycle can be shortened to increase the number of moldings per hour. This leads to cost reduction.

  Thus, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, the molding method of the FRP molded body can improve the strength of the molded body and shorten the molding time.

In the method for molding an FRP molded body according to the invention of claim 2, the pressure applied to the molded body is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² . As a result of further earnest experimental research conducted by the present inventor, the highest strength molded body is obtained when the pressure applied to the laminated molded body is about 0.43 kgf / cm ² to about 0.7 kgf / cm ² . It is found that when the pressure applied to the molded body around this pressure is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² , a higher-strength molded body can be obtained. The present invention has been completed based on knowledge.

  Thus, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, the molding method for the FRP molded body can further improve the strength of the molded body and shorten the molding time. It becomes.

  According to a third aspect of the present invention, there is provided a method for forming an FRP molded body comprising a step of laminating a fiber roving cloth and / or a fiber chopped strand mat and / or a fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator. The step of repeating the procedure of applying the roving cloth and / or the fiber chopped strand mat and / or the fiber roving with the application roll until the molded body reaches a predetermined height is repeated for about 5 minutes to about 15 times. The whole process is performed for about 30 minutes to about 2.5 hours.

  In the case of an FRP molded body having a general size, lamination of a fiber roving cloth or the like and a thermosetting resin can be performed for about 5 minutes to about 15 minutes per time. And within this time, even a molded body having a considerable thickness (that is, having a large number of laminations), before the thermosetting resin containing a curing agent and a curing accelerator begins to cure, that is, about It can be molded to a predetermined height between 30 minutes and about 2.5 hours. And since the molded object laminated | stacked by the pressurization means is compressed, air inside escapes and it becomes a molded object with few voids. At the same time, since the molded body is heated by the heating means and the second heating means, the curing rate is accelerated to increase the strength of the molded body, and the molding cycle can be shortened to increase the number of moldings per hour. This leads to cost reduction.

  In this way, in the hand lay-up method, by increasing the molding pressure and molding temperature and further increasing the molding speed, it is possible to further improve the strength of the molded body and shorten the molding time. It becomes a molding method.

  A method for molding an FRP molded body according to the invention of claim 4 is a method of laminating fiber roving cloth and / or fiber chopped strand mat and / or fiber roving, and fiber roving a thermosetting resin containing a curing agent and a curing accelerator. Curing agent by laminating a vinylon roving cloth before and after the process of repeating the procedure of applying the cloth and / or fiber chopped strand mat and / or the procedure of applying from the top of the fiber roving until a molded product of a predetermined height is obtained. And the process of apply | coating the thermosetting resin containing a hardening accelerator is performed once or several times.

  The molding method of the FRP molded body according to the present invention is heated and cured and pressure is applied to a predetermined thickness, so that the surface of the finished product is sufficiently smooth and beautiful, but in some cases fiber roving If you look closely at the marks such as crosses, they may appear slightly raised. Therefore, in order to ensure a smooth finish surface more securely, before and after the step of laminating the molded body, a vinylon roving cloth excellent in flexibility is laminated to form a thermosetting resin containing a curing agent and a curing accelerator. By applying, the vinylon fiber is crushed by pressurization, so there is no trace of roving cloth, etc., and a smooth finished surface with better design can be reliably obtained and the commercial value is also improved. .

  In this way, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, it is possible to improve the strength of the molded body and shorten the molding time, and the molded body surface is extremely smooth. This is a method for forming an FRP molded body having excellent design properties.

  In the FRP molded body forming method according to the invention of claim 5, the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving is an aramid fiber roving cloth, an aramid fiber chopped strand mat or an aramid fiber roving.

  Aramid fiber reinforced plastics are significantly stronger than carbon fiber reinforced plastics (CFRP) among FRPs. Therefore, in order to have the same strength in design compared to FRPs using only glass fibers, aramid fiber reinforced plastics The plastic need only be about 1/3 of the thickness and can be reduced in weight accordingly. Aramid fibers are more expensive than glass fibers, but the amount used can be reduced to about 1/3, and the construction is also easy, so the overall cost is not increased.

  In this way, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, the strength of the molded body can be improved and the molding time can be shortened. This is a method for molding an FRP molded body from which a high strength molded body is obtained.

  An FRP product according to a sixth aspect of the invention is obtained by processing an FRP molded body molded by the method for molding an FRP molded body according to any one of the first to fifth aspects.

  The FRP molded body formed by the method for forming an FRP molded body according to any one of claims 1 to 5 has few voids, high strength, and low cost. Therefore, high strength and low cost FRP products can be obtained by processing one or more FRP compacts by cutting, cutting, adhesion, assembly, bolting, or the like. Furthermore, the cost is lower because the mold is cheaper due to the nature of the hand layup method.

  Thus, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, the FRP product can be improved in strength and reduced in cost.

The FRP product for waterways / rivers / lakes / shores including a corner drop according to the invention of claim 7 or its FRP parts is assembled by assembling the mold of the waterway / river / lake / coast products or parts including the corner drops. Apply a mold, apply a gel coat and heat to cure. Laminate carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving on the gel coat to cure and accelerate the curing. Repeated application of the thermoset resin containing the agent from the top of the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving for about 1 minute to about 30 minutes at a time. By carbon fiber roving cloth and / or carbon fiber chop until a predetermined height is reached within about 10 minutes to about 5 hours Strand mat and / or carbon fiber roving and the thermosetting resin are laminated to form a green body, it predetermined thickness by applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² In addition, the molded body is formed by heating at a temperature in the range of room temperature to about 140 ° C. while taking a cross-sectional shape and removing air from the molded body.

  Here, the “corner drop” is a plate-like member for blocking the water channel by dropping along a guide provided in the middle of the water channel, and the structure is substantially the same as the door body of the sluice gate. In order to repair / inspect equipment such as pumps that are always underwater, it is used to temporarily block waterways in order to dry up a pool or the like in which such equipment is installed. Such a member can also be manufactured by a CFRP molded body by a heating / pressurizing hand lay-up system. Thus, in the production of a CFRP molded body by the hand lay-up method, by pressing with an appropriate pressure, the inside air escapes and a molded body with less voids is obtained, and at the same time, the molded body is in the range of room temperature to about 140 ° C Therefore, the curing rate is accelerated, the strength of the molded body is further increased, the molding cycle is shortened, the number of moldings per hour can be increased, and the cost can be reduced.

  In this way, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, it is possible to improve the strength of the molded body and shorten the molding time, combined with the advantages of the CFRP molded body. Thus, by manufacturing products for waterways, rivers, lakes, coasts, or parts including corner drops, the strength can be further improved, and the weight and cost can be reduced.

The FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 8 or its FRP parts is assembled by assembling the mold of the waterway, river, lake, shore product including the corner drops, or its parts. Apply a mold, apply a gel coat and heat to cure. Laminate carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving on the gel coat to cure and accelerate the curing. The thermosetting resin containing the agent is applied from above the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving, and the glass roving cloth and / or the glass chopped strand mat and / or the glass roving is thermosetting. Laminate on top of resin and apply thermosetting resin to glass roving cloth and Applying over the glass chopped strand mat and / or glass roving between about 1 minute and about 30 minutes at a time, with a predetermined height between about 10 minutes and about 5 hours Until then, a carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving, a thermosetting resin, a glass roving cloth and / or a glass chopped strand mat and / or a glass roving are laminated. formed, it being evacuated in the compact as well as to a predetermined thickness and cross-sectional shape by applying pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ^2, the molded body from room temperature to It is formed by heating at a temperature in the range of about 140 ° C.

  As described above, the HBRP molded body of the present invention is laminated in the order of carbon fiber, thermosetting resin, glass fiber, and thermosetting resin to increase the molding pressure and molding temperature and increase the molding speed in the hand lay-up method. By improving the strength of the molded body and shortening the molding time, by changing the mixing ratio of carbon fiber and / or glass fiber, or by increasing or decreasing the number of carbon fiber or glass fiber layers, It is possible to set subtle strengths for products for waterways, rivers, lakes, coasts, or parts including corner drops, and to find appropriate product prices.

  In this way, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, and the cost can be reduced. FRP products for waterways, rivers, lakes and shores, including FRP, or parts made of FRP.

The FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 9 or its FRP parts is assembled by assembling the mold of the waterway, river, lake, shore product or parts including the corner drop. Apply a mold, apply a gel coat, heat and cure, laminate a hybrid fiber roving cloth made of carbon fiber and glass fiber on the gel coat, and apply a thermosetting resin containing a curing agent and a curing accelerator. Hybrid fiber roving by applying from above hybrid fiber roving cloth for about 1 minute to about 30 minutes each time until a predetermined height is reached within about 10 minutes to about 5 hours the molded body formed by laminating a cloth and thermosetting resin, it about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² in the range under pressure having a predetermined thickness and cross-sectional While it deflated in the compact as well as to the shape, and is formed by heating the molded body at a temperature in the range of room temperature to about 140 ° C..

  As described above, the HBRP molded body of the present invention is formed by alternately laminating hybrid fiber roving cloth and thermosetting resin knitted with carbon fiber and glass fiber to increase molding pressure and molding temperature in the hand lay-up method. By increasing the speed, it is possible to improve the strength of the molded body and shorten the molding time. By changing the mixing ratio of the carbon fiber and glass fiber in the hybrid fiber roving cloth, Subtle strength settings for rivers, lakes, coastal products or their parts can be made, and appropriate product prices can be found.

  In this way, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, and the cost can be reduced. FRP products for waterways, rivers, lakes and shores, including FRP, or parts made of FRP.

The FRP pedestrian bridge or its FRP component according to the invention of claim 10 is prepared by assembling the mold of the pedestrian bridge or its component, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving are laminated, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon. Applying from above the fiber roving to the predetermined height between about 10 minutes to about 5 hours by repeating the application from about 1 minute to about 30 minutes each time, Carbon fiber chopped strand mat and / or carbon fiber roving and thermosetting resin And a molded body formed, it being evacuated in the compact with by applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ² to a predetermined thickness, the molded body It is formed by heating at a temperature ranging from room temperature to about 140 ° C.

  Thus, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, coupled with the advantages of the CFRP molded body, By manufacturing the pedestrian bridge or its parts, the strength is further improved, and each part can be made thinner, so it is possible to further reduce the weight and therefore the construction becomes easier. Can do. Moreover, since it is very excellent in corrosion resistance, it can be used for a long time without rusting.

  In this way, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, and the cost can be reduced. It becomes a footbridge or its FRP parts.

The FRP pedestrian bridge or its FRP component according to the invention of claim 11 is formed by assembling a mold of the pedestrian bridge or its component, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving are laminated, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon. It is applied from above the fiber roving, the glass roving cloth and / or the glass chopped strand mat and / or the glass roving is laminated on the thermosetting resin, and the thermosetting resin is applied to the glass roving cloth and / or the glass chopped strand mat and / Or glass low The carbon fiber roving cloth and / or until it reaches a predetermined height between about 10 minutes and about 5 hours by repeating the application from about 1 minute to about 30 minutes per time. Alternatively, a carbon fiber chopped strand mat and / or a carbon fiber roving, a thermosetting resin, a glass roving cloth and / or a glass chopped strand mat and / or a glass roving are laminated to form a molded body, and about 0.01 kgf / cm is formed thereon. Formed by heating the molded body at a temperature in the range of room temperature to about 140 ° C. while applying a pressure in the range of ² to about 1.6 kgf / cm ² to obtain a predetermined thickness and venting air in the molded body. Is.

  In this way, carbon fiber, thermosetting resin, glass fiber, and thermosetting resin are laminated in this order to increase the molding pressure and temperature and increase the molding speed in the hand lay-up method, thereby improving the strength of the compact. It is possible to shorten the molding time, change the mixing ratio of carbon fiber and / or glass fiber, increase or decrease the number of carbon fiber or glass fiber layers, and subtle the pedestrian bridge or its parts The strength can be set, and an appropriate product price can be found.

  In this way, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, and the cost can be reduced. It becomes a footbridge or its FRP parts.

The FRP pedestrian bridge or its FRP component according to the invention of claim 12 is formed by assembling a mold of the pedestrian bridge or its component, applying a release agent, further applying a gel coat and heating to cure, Laminating hybrid fiber roving cloth made of carbon fiber and glass fiber, and applying a thermosetting resin containing a curing agent and a curing accelerator on the hybrid fiber roving cloth from about 1 minute to about 30 minutes per time By repeating this process, a hybrid fiber roving cloth and a thermosetting resin are laminated to a predetermined height in about 10 minutes to about 5 hours to form a molded body, and about 0.01 kgf / cm is formed thereon. while deflated in the compact as well as ² to about 1.6 kgf / cm ² in the range over the pressure of a predetermined thickness, ranges compact of room temperature to about 140 ° C. Those formed by heating at a temperature.

  In this way, hybrid fiber roving cloth made by weaving carbon fiber and glass fiber and thermosetting resin are alternately laminated to increase the molding pressure and molding temperature and increase the molding speed in the hand lay-up method. The body strength can be improved and the molding time can be shortened. By changing the mixing ratio of carbon fiber and glass fiber in the hybrid fiber roving cloth, the strength of the pedestrian bridge or its parts can be set. Can find the right product price.

  In this way, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, and the cost can be reduced. It becomes a footbridge or its FRP parts.

The FRP footboard of the management bridge or footbridge according to the invention of claim 13 is constructed by assembling the mold of the footboard of the management bridge or footbridge, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator as a carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or Alternatively, the carbon fiber roving is performed until it reaches a predetermined height in about 10 minutes to about 5 hours by repeatedly applying the carbon fiber roving from above for about 1 minute to about 30 minutes. Cloth and / or carbon fiber chopped strand mat and / or carbon fiber roving and thermosetting resin Laminated to form a molded body, it deflate in the compact as well as to a predetermined thickness by applying a pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ^2, the surface It is formed by grinding gravel and heating the compact at a temperature ranging from room temperature to about 140 ° C.

  Thus, by increasing the molding pressure and molding temperature and increasing the molding speed in the hand lay-up method, the strength of the molded body can be improved and the molding time can be shortened, coupled with the advantages of the CFRP molded body, By producing the tread of the management bridge or the pedestrian bridge, the strength can be further improved, and the weight and cost can be reduced. Then, before the molded body is cured in the final step of the hand lay-up method, the gravel is spread on the surface, so that half of the gravel is embedded in the surface of the finished plate. As a result, irregularities are formed on the surface, which makes it difficult to slip and prevents overturning.

  In this way, even when snow falls or freezes in winter, there is little risk of falling, there is no problem in strength, and it becomes a low cost, high safety management bridge or footbridge made of FRP.

The FRP footboard of the management bridge or footbridge according to the invention of claim 14 is constructed by assembling the mold of the footboard of the management bridge or footbridge, applying a release agent, further applying a gel coat and heating to cure, A carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or a carbon fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator as a carbon fiber roving cloth and / or a carbon fiber chopped strand mat and / or Alternatively, a glass roving cloth and / or glass chopped strand mat and / or glass roving are laminated on a thermosetting resin, and the thermosetting resin is applied to the glass roving cloth and / or glass chopped. Strand mat and / or moth The carbon fiber roving cloth is applied until it reaches a predetermined height in about 10 minutes to about 5 hours by repeating the application from the top of the sloving in about 1 minute to about 30 minutes each time. A carbon fiber chopped strand mat and / or a carbon fiber roving, a thermosetting resin, a glass roving cloth and / or a glass chopped strand mat and / or a glass roving are laminated to form a molded body, and about 0.01 kgf / A pressure in the range of cm ² to about 1.6 kgf / cm ² is applied to obtain a predetermined thickness, and the air in the molded body is evacuated to grind the surface, and the molded body is in the range of room temperature to about 140 ° C. It is formed by heating at a temperature.

  In this way, carbon fiber, thermosetting resin, glass fiber, and thermosetting resin are laminated in this order to increase the molding pressure and temperature and increase the molding speed in the hand lay-up method, thereby improving the strength of the compact. The molding time can be shortened by changing the mixing ratio of carbon fiber and / or glass fiber or increasing or decreasing the number of carbon fiber or glass fiber layers. Subtle intensity setting is possible, and an appropriate product price can be found. Then, before the molded body is cured in the final step of the hand lay-up method, the gravel is spread on the surface, so that half of the gravel is embedded in the surface of the finished plate. As a result, irregularities are formed on the surface, which makes it difficult to slip and prevents overturning.

  In this way, there is little risk of falling even when it snows or freezes in winter, there is no problem in strength, and it is an appropriate product in terms of cost, and it is a FRP footboard for a highly safe management bridge or footbridge It becomes.

The FRP footboard of the management bridge or footbridge according to the invention of claim 15 is constructed by assembling the mold of the footboard of the management bridge or footbridge, applying a release agent, further applying a gel coat and heating to cure, In addition, a hybrid fiber roving cloth made of carbon fiber and glass fiber is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied from above the hybrid fiber roving cloth for about 1 minute to about 30 minutes per time. By repeating this process, a hybrid fiber roving cloth and a thermosetting resin are laminated to a predetermined height in about 10 minutes to about 5 hours to form a molded body. / cm ² ~ about by applying a pressure in the range of 1.6 kgf / cm ² to remove the air in the compact as well as a predetermined thickness, sprinkled gravel surface, normal moldings Those formed by heating at a temperature in the range of about 140 ° C..

  In this way, hybrid fiber roving cloth made by weaving carbon fiber and glass fiber and thermosetting resin are alternately laminated to increase the molding pressure and molding temperature and increase the molding speed in the hand lay-up method. The body strength can be improved and the molding time can be shortened. By changing the mixing ratio of carbon fiber and glass fiber in the hybrid fiber roving cloth, it is possible to set the strength of the tread of the management bridge or footbridge. And can find an appropriate product price. Then, before the molded body is cured in the final step of the hand lay-up method, the gravel is spread on the surface, so that half of the gravel is embedded in the surface of the finished plate. As a result, irregularities are formed on the surface, which makes it difficult to slip and prevents overturning.

  In this way, there is little risk of falling even when it snows or freezes in winter, there is no problem in strength, and it is an appropriate product in terms of cost, and it is a FRP footboard for a highly safe management bridge or footbridge It becomes.

An FRP product for waterways, rivers, lakes, and coasts including a corner drop according to the invention of claim 16 or an FRP part thereof, an FRP pedestrian bridge or an FRP part thereof, or a management bridge or an FRP footboard of a pedestrian bridge is formed on a molded body. The applied pressure is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² . As a result of further earnest experimental research conducted by the present inventor, the highest strength molded body is obtained when the pressure applied to the laminated molded body is about 0.43 kgf / cm ² to about 0.7 kgf / cm ² . It is found that when the pressure applied to the molded body around this pressure is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² , a higher-strength molded body can be obtained. The present invention has been completed based on knowledge.

  In this way, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, it is possible to further improve the strength of the molded body and shorten the molding time by using a water channel including a corner drop. FRP products for rivers, lakes, and coasts or FRP parts thereof, FRP pedestrian bridges or FRP parts, or FRP treads for management bridges or pedestrian bridges.

  The FRP product for waterways, rivers, lakes, and shores including the angle drop according to the invention of claim 17 or its FRP part, the FRP footbridge or its FRP part, or the FRP footboard of the management bridge or footbridge is repeatedly laminated. Is performed for about 5 minutes to about 15 minutes per time, and the molded body is laminated for about 30 minutes to about 2.5 hours.

  If these products / parts have a general size, lamination of the fiber roving cloth or the like and the thermosetting resin can be performed for about 5 minutes to about 15 minutes per time. And within this time, even if it has a considerable thickness (i.e., a large number of laminations), before the thermosetting resin containing the curing agent and the curing accelerator begins to cure, that is, from about 30 minutes to about It can be molded to a predetermined height in 2.5 hours. And since the molded object laminated | stacked by the pressurization means is compressed, air inside escapes and it becomes a molded object with few voids. At the same time, since the molded body is heated by the heating means and the second heating means, the curing rate is accelerated to increase the strength of the molded body, and the molding cycle can be shortened to increase the number of moldings per hour. This leads to cost reduction.

  In this way, by increasing the molding pressure and molding temperature in the hand lay-up method and further increasing the molding speed, it is possible to further improve the strength of the molded body and shorten the molding time, thereby reducing the cost. FRP products for waterways, rivers, lakes, and shores including corner drops or FRP parts thereof, FRP pedestrian bridges or FRP parts thereof, or FRP treads for management bridges or pedestrian bridges.

  An FRP product for waterways, rivers, lakes, and shores including a corner drop according to the invention of claim 18 or an FRP part thereof, an FRP footbridge or an FRP part thereof, or a management bridge or an FRP footboard of a footbridge is a fiber roving cloth. And / or a procedure of laminating a fiber chopped strand mat and / or fiber roving and applying a thermosetting resin containing a curing agent and a curing accelerator from above the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving. Before and after the process of repeating the procedure until a molded body having a predetermined height is obtained, a process of laminating a vinylon roving cloth and applying a thermosetting resin containing a curing agent and a curing accelerator is performed once or This is done several times.

  FRP products for waterways, rivers, lakes, coasts, etc. according to the present invention are heated and cured and pressure is applied to a predetermined thickness, so the surface of the finished product is sufficiently smooth and beautiful in appearance, In some cases, when the traces of the fiber roving cloth and the like are seen well, they may slightly protrude. Therefore, in order to ensure a smooth finished surface more reliably, a vinylon roving cloth having excellent flexibility is laminated before and after the molded body is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied. As a result, the vinylon fibers are crushed by pressurization, so that a trace of roving cloth or the like does not appear, and a smooth finished surface with better design can be reliably obtained, and the commercial value is also improved.

  In this way, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, it is possible to improve the strength of the molded body and shorten the molding time, and the molded body surface is extremely smooth. FRP products for waterways, rivers, lakes, and coasts with excellent design.

  An FRP product for waterways, rivers, lakes, and shores including an angle drop according to the invention of claim 19 or an FRP part thereof, an FRP pedestrian bridge or an FRP part thereof, or a management bridge or an FRP footboard of a pedestrian bridge is a fiber roving cloth. And / or the fiber chopped strand mat and / or fiber roving is a glass roving cloth, glass chopped strand mat or glass roving.

  Thus, by using glass fiber, a high-strength FRP product can be obtained at low cost. And in manufacture of the glass fiber reinforced plastic (GFRP) molded object by a hand lay-up method, when it pressurizes with a suitable pressure, internal air will escape and it will become a molded object with few voids. At the same time, the molded body is heated at a temperature ranging from room temperature to about 140 ° C., so that the curing rate is accelerated, the strength of the molded body is further increased, and the molding cycle is shortened to increase the number of moldings per hour. , Leading to lower costs.

  Thus, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, it is possible to improve the strength of the molded body and shorten the molding time, thereby reducing the cost.・ FRP products for rivers, lakes, and coasts.

  An FRP product for waterways, rivers, lakes, and shores including an angle drop according to the invention of claim 20 or an FRP part thereof, an FRP footbridge or an FRP part thereof, or a management bridge or an FRP footboard of a footbridge is a fiber roving cloth. And / or the fiber chopped strand mat and / or fiber roving is an aramid fiber roving cloth, an aramid fiber chopped strand mat or an aramid fiber roving.

  Aramid fiber reinforced plastics are significantly stronger than carbon fiber reinforced plastics (CFRP) among FRPs. Therefore, in order to have the same strength in design compared to FRPs using only glass fibers, aramid fiber reinforced plastics The plastic need only be about 1/3 of the thickness and can be reduced in weight accordingly. Aramid fibers are more expensive than glass fibers, but the amount used can be reduced to about 1/3, and the construction is also easy, so the overall cost is not increased.

  In this way, in the hand lay-up method, by increasing the molding pressure and molding temperature and increasing the molding speed, the strength of the molded body can be improved and the molding time can be shortened. It becomes FRP products for waterways, rivers, lakes, and coasts where high strength can be obtained.

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1
First, a sluice door body and a sluice door stop according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 7.

  FIG. 1 is a flowchart showing a method of forming an FRP molded body according to the first embodiment of the present invention. FIG. 2 is a front view showing a sluice door body as an FRP product manufactured by assembling the FRP molded body according to the first embodiment of the present invention. FIG. 3 (a) is a skin plate that is a part of a sluice door body that is an FRP product according to the first embodiment of the present invention, (b) is a stringer, (c) is a gusset plate that covers the stringer, d) is a perspective view of a short cross beam, and (e) is a perspective view of a long cross beam. FIG. 4A is a front view showing a method of assembling a skin plate, which is a part of a sluice door body that is an FRP product according to the first embodiment of the present invention, to another part, and FIG. 4B is a rear view. FIG. 5 (a) is a diagram showing a structure for hiding an assembly portion of a skin plate that is a part of a sluice door body that is an FRP product according to the first embodiment of the present invention, and FIG. 5 (b) is a diagram showing a hidden state. is there. FIG. 6 is a perspective view showing another example of a gusset plate that is a part of a door body of a sluice that is an FRP product according to the first embodiment of the present invention. FIG. 7: is a perspective view which shows the door stop of the sluice which is FRP product concerning Embodiment 1 of this invention with a door body.

  First, the molding method of the FRP molded body of the first embodiment will be described with reference to the flowchart of FIG. First, a mold of an FRP molded body (for example, a sluice door skin plate) manufactured in step S1 is assembled. At this time, heating means (for example, an electric heater) for heating the mold is set under the mold. Next, a release agent is applied to the inner surface of the assembled mold (step S2), and a gel coat is further applied to the inner bottom surface of the mold (step S3), and heated to a range of approximately 25 to 45 ° C. with an electric heater. The gel coat is cured (step S4). When the FRP molded body is completed, this gel coat plays a role of improving the appearance of this surface and blocking ultraviolet rays in sunlight to improve the weather resistance of the FRP molded body.

  Next, the process of the hand layup method is performed. That is, first, a glass chopped strand mat is laid in the mold (step S5), an unsaturated polyester resin as a thermosetting resin and a curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll ( Next, a glass roving cloth is laid on the laminate (step S7), an unsaturated polyester resin and a curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll (step S8). ), This procedure is repeated in about 5 minutes until the laminate reaches a predetermined height, and is completed in about 1 hour. The glass chopped strand mat laminating process (steps S5 and S6) and the glass roving cloth laminating process (steps S7 and S8) are performed at room temperature.

  Further, in the case of an FRP molded body that requires more strength, the process returns to step S7 as indicated by another arrow in FIG. 1 without returning to step S5 after step S8, and the glass roving cloth is again attached to the laminated body. An operator repeats the procedure of placing an unsaturated polyester resin and a curing agent / curing accelerator on the top and leveling the surface with an application roll. That is, since the strength of the glass roving cloth is higher than that of the glass chopped strand mat, only the glass roving cloth lamination process in steps S7 and S8 is repeated, and the laminate is completed in about one hour until the predetermined height is reached. To do.

Then, a press machine as a pressurizing unit provided with an electric heater as a second heating unit is placed on the laminate as a molded body having a predetermined height, and set under the electric heater and the mold. The laminated body as a molded body is heated to about 140 ° C. by the electric heater and is pressed at about 0.7 kgf / cm ² by a press machine (step S9). As a result, the air inside the laminate is pushed out to form a dense structure, and when heated at a high temperature of about 140 ° C., the resin hardens in a short time and becomes a stronger FRP molded body. Thus, when heat curing and pressurization are completed, the FRP molded body is removed from the mold after it has cooled (step S10). In step S2, since the mold release agent is applied to the inner surface of the mold, the FRP molded product is smoothly removed.

  In the case of an FRP molded body in which both surfaces may be exposed to sunlight, such as a skin plate of a sluice door body, it is necessary to form a gel coat film on both surfaces. In such a case, a release agent is applied also to the press surface (lower surface) of the press machine, a gel coat is applied thereon, and is cured by heating with an electric heater as a second heating means. Then, the gel coat film formed on the lower surface of the pressing machine in the heating / pressurizing step of step S9 is brought into close contact with the surface of the laminate to be integrated. When the FRP molded product is cooled and removed from the mold, the release agent is applied to the lower surface of the press machine, so the cured gel coat film is smoothly separated from the lower surface of the press machine, and the gel coat is applied to both sides. An FRP molded body on which a film is formed can be obtained.

  When the gel coat film is also attached to the upper surface of the laminate as described above, the heating / pressurizing step (step S9) is performed immediately after the glass roving cloth laminating step (steps S7 and S8) as shown in the flowchart of FIG. ), The glass chopped strand mat and the gel coat film are formed by sandwiching the glass chopped strand mat (steps S5 and S6) at least once and then performing the heating / pressurizing step (step S9). Since adhesiveness is high, it is more preferable.

  A wide variety of FRP products can be obtained by combining FRP molded bodies having various shapes and sizes thus manufactured. As a specific example, the case of the sluice door 1 shown in FIG. 2 will be described. This door body 1 has a flat skin plate 2, five vertical girders 3 as spars to reinforce the plate, and two types as spars that connect and reinforce these five vertical girders 3. A large number of stainless steel bolts and nuts are connected to the short girder 4 and 5 and the gusset plate 3b installed on the vertical girder 3 to prevent the door body 1 from being twisted or distorted. Has been assembled.

  Further detailed shapes of these parts will be described with reference to FIG.

  As shown in FIG. 3 (a), the skin plate 2 serving as the base of the door body 1 has a simple flat plate shape, and as shown in FIG. 3 (b), the stringer 3 has two C-shaped channel members. Are bonded back to back to form an H-shaped member. As shown in FIG. 3C, the gusset plate 3b has a flat plate shape, is installed on the stringer 3, and is bolted together with a stainless steel bolt. Then, as shown in FIGS. 3D and 3E, the cross beams 4 and 5 also have two H-shaped channel members bonded back to back in the same manner as the vertical beam 3 to form a H-shaped member. It is a thing. Note that the girder is not limited to a member having an H-shaped cross section, and a channel member having a C-shaped cross section (U-shaped) may be used, or a member having a H-shaped cross section and a member having a C-shaped cross section may be used in combination. I do not care.

  Next, a method for connecting these girders to the flat skin plate 2 will be described with reference to FIG. Here, a case of connection with a cross beam 14 having a C-shaped cross section is shown.

  As shown in FIG. 4, the skin plate 2 and the cross beam 14 are joined by hexagon bolts and nuts. A stainless steel hexagon bolt 6 is passed from the skin plate 2 side and tightened by a stainless steel hexagon nut 9. However, since the receiving surface on the inner side of the cross beam 14 has a tapered shape, it is made of stainless steel with a reverse taper. The taper washer 7 is used to make the receiving surface parallel and tightened with a hexagon nut 9 via a stainless steel spring washer 8 in order to increase the tightening force.

  As shown in FIG. 4 (a), the head of the hexagonal bolt 6 can be seen in such a normal assembling method, but when this is aesthetically hindered, as shown in FIG. When processing the hole 10, the surface is sometimes covered with the resin coating 12 after being countersunk and fixed with a stainless steel countersunk bolt 11.

  Further, as another example of the gusset plate, as shown in FIG. 6, the lateral girder 14 and the vertical girder 15 of the C-shaped channel butted at the corner portion of the skin plate 2, and the pentagonal gusset plate 16 are bolted. Thus, the door body can be prevented from being twisted or distorted by connecting all the four corner portions.

  In this way, the sluice door 1 is completed, and the manufacturing methods of the members 2, 3a, 3b, 4a, 5a, 14, 15, 16 are all as described above according to the flowchart of FIG. . Therefore, by heating and pressurizing at a high temperature, an FRP molded body with few voids and a high strength can be formed and can be made thin. Therefore, the door body 1 assembled with these is also a lightweight and strong structure.

  Next, the door stop of the sluice gate on which the door body 1 moves up and down will be described with reference to FIG. The door 20 of the sluice is composed of members 17 and 18 having an H-shaped section having grooves into which both side ends of the door 1 of the sluice are fitted, and a bottom member 19 in which the lower surface of the door 1 is in close contact. It becomes a guide groove when moving up and down, and when the door body 1 comes to the lower end, it is integrated with the door body 1 to block the flow of water. In addition, rubber | gum is affixed on the surface which contacts the door stop 20 of the door body 1 in order to prevent a water leak. Further, the members 17 and 18 having an H-shaped cross section are obtained by pasting FRP molded bodies having a C-shaped cross section back to back, and the bottom member 19 is an FRP molded body having a C-shaped cross section disposed with a protruding portion facing downward. is there. The door 20 of the sluice which consists of these members 17, 18, and 19 is fixed to the water channel with concrete.

  The manufacturing methods of these members 17, 18, and 19 are all as described above according to the flowchart of FIG. Therefore, by heating and pressurizing at a high temperature, an FRP molded body having a high strength with few voids inside is obtained, and the door stop 20 assembled with these is also a strong structure.

  The door body 1 is moved up and down by rotating a support bar 21 welded to a fixing plate 22 fixed to the upper surface of the door body 1 with an electric motor or a manual handle. Moreover, in this Embodiment 1, although demonstrated about the door stop 20 of the cross-section H shape of a raising / lowering part as FIG. 7 shows, as a shape of a door stop, it is not restricted to this, The following implementation As described in the second embodiment, the door stop 130 whose cross section of the lifting part is called a hat-shaped hat shape can be used. Besides, the doors having various shapes such as a door shape whose cross section of the lifting part is U-shaped. Hits can be used.

Embodiment 2
Next, the FRP door body and door stop of the sluice concerning Embodiment 2 of this invention are demonstrated with reference to FIG. Fig.8 (a) is a front view which shows the whole structure of the FRP door body of the sluice concerning Embodiment 2 of this invention, (b) is a top view.

  As shown in FIGS. 8A and 8B, the FRP door body 120 of the sluice according to the second embodiment includes an FRP girder 122, an FRP rubber presser plate 123, an FRP skin plate 121, The FRP water level adjusting angle drop plate 125 and the like are assembled. These FRP skin plate 121, FRP girder 122, FRP rubber retainer plate 123, and FRP water level adjusting corner drop plate 125 are also heated and pressurized at high temperature according to the process shown in the flowchart of FIG. As a result, it was produced as a high-strength FRP molded body with few voids inside.

  First, the FRP rubber press plate 123 will be described. In order to maintain watertightness between the right and left sides of the sluice lifting / lowering FRP door body 120 according to the second embodiment and the FRP door stop 130 on the three sides of the bottom. The water-tight rubber 124 is attached, and the water-tight rubber 124 is bent as shown in FIG. 8 (b) and is closely attached to the FRP door-to-door 130. Therefore, the water-tight rubber 124 is attached to the FRP skin plate 121. A large stress is applied to the mounting portion. Moreover, since many bolts 123a are bolted, many bolt holes are opened, which is disadvantageous in strength. For this reason, conventionally, even in the FRP door body of the sluice, a stainless steel plate was used only for the rubber retainer plate. However, the FRP door body 120 according to the second embodiment is manufactured according to the flowchart of FIG. The high-strength FRP rubber pressing plate 123 is used, and there is no problem in terms of strength.

  Next, the FRP water level adjusting angle drop plate 125 will be described. As shown in FIG. 8 (a), the FRP skin plate 121 according to the second embodiment is provided with two notches at the top, and is received along the edges of the notches. A member 128 is attached. Each of these receiving members 128 is fitted with two FRP water level adjusting angle drop plates 125, which are normally closed to the upper side of the FRP door body 120, and can store water in the water channel up to the upper side. it can.

  Here, when trying to lower the water level of the water channel a little, if the bottom of the FRP door body 120 is lifted slightly from the bottom of the water channel by raising the spindle 129 to create a gap, the water pressure at the bottom of the water channel is high because the water level is high. The water flow is high and the water pressure is high, and the FRP door body 120 is lowered and the sluice cannot be closed. Therefore, as shown in FIG. 8 (a), when the FRP water level adjustment angle drop plate 125 is attached and the water level in the water channel is lowered slightly, these four FRP water level adjustment angle drops An arbitrary number of sheet boards 125 are removed by holding handles 126 so that water near the water surface flows. Since high water pressure is not applied to the water near the water surface, the water flow can be easily stopped by fitting the FRP water level adjusting angle drop plate 125 again when the water level drops to the target water level.

  Since the handle 126 is also made of high-strength FRP manufactured according to the flowchart of FIG. 1, it can be fixed to the FRP water level adjusting corner drop plate 125 by adhesion or can be fixed with bolts. In the second embodiment, the handle 126 is fixed to the water level adjusting angle drop plate 125 with bolts, and the φ3 link chain 127 is connected from the bolt to the fixing bolt 123a of the rubber pressing plate 123. This prevents a situation in which the water level adjusting angle drop plate 125 is dropped or lost when the water level adjustment angle drop plate 125 is removed.

  As described above, in the FRP door body 120 of the sluice according to the second embodiment, since the FRP water level adjusting corner dropping plate 125 is attached, the FRP door body 120 is shown in FIG. The water level can be adjusted without moving up and down along the FRP door-to-door 130 of the hat-shaped sluice. The FRP skin plate 121, the FRP girder 122, the FRP rubber retainer plate 123, and the FRP water level adjusting angle drop plate 125 that constitute the FRP door body 120 are all manufactured according to the flowchart of FIG. In addition, since it is a high-strength FRP molded body, it can sufficiently withstand high water pressure, and can replace stainless steel products, so that it can be light and low in cost.

  In the FRP door 1 of the sluice according to the first embodiment, a watertight rubber and an FRP rubber presser plate are similarly attached, although not shown.

Embodiment 3
Next, the door body of the sluice according to the third embodiment of the present invention, the door stop, and the vertical (opening and closing) mechanism of the door body will be described with reference to FIGS. 1 to 7 and with reference to FIGS. To do. FIG. 9 is a flowchart showing a molding method of a CFRP (carbon fiber reinforced plastic) molded body according to the third embodiment of the present invention. FIG. 10 (a) is a front view showing the entire configuration of a manually open / close sluice according to Embodiment 3 of the present invention, and FIG. 10 (b) is a side view.

  First, a method for molding the CFRP molded body of the third embodiment will be described with reference to the flowchart of FIG. Steps S11 to S14 are exactly the same as steps S1 to S4 in FIG. Next, the process of the hand layup method is performed. That is, first, a carbon fiber roving cloth is laid in the mold (step S15), an unsaturated polyester resin as a thermosetting resin and a curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll ( Step S16) Subsequently, a carbon fiber chopped strand mat is laid on the laminate (Step S17), the unsaturated polyester resin and the curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll ( Step S18), this procedure is repeated until the laminated body reaches a predetermined height.

  Here, if the strength of the molded body (for example, the skin plate of the sluice door body) may be the same as that of the first embodiment, CFRP is far superior in strength to FRP using only glass fiber. Therefore, the height of the laminated body can be reduced, and the time required for the lamination process is shortened. The carbon fiber roving cloth laminating process (steps S15 and S16) and the carbon fiber chopped strand mat laminating process (steps S17 and S18) are performed at room temperature.

  Further, in the case of a CFRP molded body requiring higher strength, the process returns to step S17 as indicated by another arrow in FIG. 9 without returning to step S15 after step S18, and the carbon fiber roving cloth is again laminated. A procedure is repeated in which an unsaturated polyester resin and a curing agent / accelerator are poured and the operator smoothes the surface with a coating roll. That is, since the strength of the carbon fiber roving cloth is higher than that of the carbon fiber chopped strand mat, only the lamination process of the carbon fiber roving cloth in steps S17 and S18 is repeated, and about 45 until the laminated body reaches a predetermined height. Complete in minutes.

Then, a press machine as a pressurizing unit provided with an electric heater as a second heating unit is placed on the laminate as a molded body having a predetermined height, and set under the electric heater and the mold. The laminated body as a molded body is pressurized at about 0.8 kgf / cm ² by a press machine while being heated to about 140 ° C. by the electric heater (step S19). As a result, the air inside the laminate is pushed out to form a dense structure, and when heated at a high temperature of about 140 ° C., the resin hardens in a short time and becomes a CFRP molded body with higher strength.

  Thus, when heat curing and pressurization are completed, the CFRP molded body is removed from the mold after it has cooled (step S20). In step S12, since the mold release agent is applied to the inner surface of the mold, the CFRP molded product is smoothly removed.

  In the case of a CFRP molded body in which both surfaces may be exposed to sunlight, such as a skin plate of a sluice door body, it is necessary to form a gel coat film on both surfaces. In such a case, a release agent is applied also to the press surface (lower surface) of the press machine, a gel coat is applied thereon, and is cured by heating with an electric heater as a second heating means. Then, the gel coat film formed on the lower surface of the press in the heating / pressurizing step of step S19 is brought into close contact with the surface of the laminate to be integrated. When the CFRP molded body is cooled and removed from the mold, the release agent is also applied to the lower surface of the press machine, so the cured gel coat film is smoothly separated from the lower surface of the press machine, and the gel coat is applied to both sides. A CFRP molded body on which a film is formed can be obtained.

  When the gel coat film is also attached to the upper surface of the laminate as described above, a heating / pressurizing step (step) is performed immediately after the carbon fiber roving cloth lamination step (steps S17 and S18) as shown in the flowchart of FIG. Rather than performing S19), the carbon fiber chopped strand mat and the carbon fiber chopped strand mat are subjected to the heating and pressurizing step (step S19) after sandwiching the carbon fiber chopped strand mat (step S15, S16) at least once. Since the adhesiveness of a gel coat film is high, it is more preferable.

  By combining the CFRP molded bodies having various shapes and sizes thus manufactured, a wide variety of CFRP products can be obtained. As a specific example, the case of the sluice door 1 shown in FIG. 2 will be described. This door body 1 has a flat skin plate 2, five vertical girders 3 as spars to reinforce the plate, and two types as spars that connect and reinforce these five vertical girders 3. A short girder 4 and 5 and a gusset plate 3b installed on the vertical girder 3 to prevent the door body 1 from being twisted or distorted are connected by a large number of bolts and nuts. It has been.

  As described above, since the CFRP molded body has higher strength than the FRP molded body using only glass fiber, the parts 2, 3a, 3b, 4a, 5a (see FIG. 3) of the door body 1 can be made thin. Furthermore, since the five stringers 3 can be reduced to four, the door body of the CFRP molded body formed by assembling these parts is much lighter than the door body 1 of the first embodiment.

  Next, as shown in FIG. 7, the door contact of the sluice gate where the door body moves up and down is H-shaped members 17 and 18 having groove portions into which both side ends of the door body of the sluice fit, and the lower surface of the door body. 9, these members 17, 18, 19 are also thinner as a CFRP molded body according to the flowchart of FIG. 9, and the groove width is also narrower in accordance with the thinness of the door body of the CFRP molded body. The sluice door stop made of the CFRP molded body thus produced is fixed with concrete in the water channel.

  Here, before reaching the predetermined height in step S18 of the flowchart of FIG. 9 and proceeding to the high-temperature heating / compression process of step S19, the carbon fiber roving cloth or the carbon fiber chopped strand mat (or carbon fiber roving) is once again used. By carrying out the lamination, carbon fibers can be projected on the surface of the finished CFRP molded body. Therefore, the carbon fiber protrudes also on the surface of the door of the CFRP molded body formed by assembling these components, and the present inventor has found that the carbon fiber grows with algae in water. As a result, algae, aquatic plants, and the like grow on the portion of the sluice door that is immersed in water, and it becomes a part of the natural waterway, river, lake, and shore, and becomes an environmentally friendly sluice door.

  In addition, it is made for a carbon fiber not to protrude from the door stop of a sluice and the both ends which fit in the groove | channel of the door body of a sluice. This is because if a large amount of algae or the like adheres to both ends of the sluice door and the sluice door body, the door body cannot move up and down smoothly and the water channel cannot be sealed.

  Furthermore, the vertical movement of the door body is performed by pulling up the support bar 21 welded to the fixing plate 22 fixed to the upper surface of the door body by rotating the electric motor or the manual handle upward. Since the door body of the sluice according to the second embodiment is made light, the capacity of the door body opening / closing device (electric motor or manual handle) can be set to a low load. As a result, carbon fiber is more expensive than glass fiber, but the CFRP molded body can be made thin, so the amount used can be reduced to about half, the sluice door body becomes lighter, and the capacity of the switchgear can be set to a low load, so the whole As a result, the cost can be reduced.

  Next, a specific example of such a sluice door body, door stop, and door opening / closing device will be described with reference to FIG. As shown in FIG. 10, the sluice door body 33 and the sluice door stop 34 made of the CFRP molded body manufactured as described above are used for the manually-operated sliding sluice gate 25.

  The sliding sluice 25 includes a door stop 34 made of a CFRP molded body whose lower half is fixed with concrete in a water channel, and a door body 33 made of a CFRP molded body that is fitted in a groove of the door stop 34 and moves up and down. An iron frame 35 that is horizontally fixed to the upper end of the door stop 34, a fixing plate 30 that is bolted to the center of the upper end of the door 33, and a spindle as a support bar connected to the fixing plate 30 with a pin. 29, a gear box 27 containing a bevel gear meshing with the spindle 29 fixed on the frame 35, a spindle cover 28 for covering the gear box 27 and the spindle 29 from rain water, etc. The bevel gear is rotated by rotating while being directly connected to the bevel gear, whereby the spindle 29 is moved up and down to move the door body 33 up and down. And a manual handle 26 for Id.

  Further, as shown in FIG. 10B, a doorstep 34 has a pair of steps 32 for raising the operator table 31 from both banks of the water channel and the operator table 31 for the operator who turns the manual handle 26 to stand. Installed. When the operator stands at the center of the operation table 31 and holds the handle 26a of the manual handle 26 and turns the manual handle 26 clockwise (clockwise), the bevel gear in the gear box 27 rotates and the spindle 29 rises. Then, the sluice door 33 is also slid up and the sluice gate 25 is opened. The raised spindle 29 enters the spindle cover 28. When the operator turns the manual handle 26 counterclockwise (counterclockwise), the spindle 29 is lowered, the sluice door 33 is also slid down, and the sliding sluice 25 is closed.

  In addition, as FIG.10 (b) shows, the water flow which passes the door stop 34 from the operation stand 31 side is a main water flow, and it is a reverse water flow which flows into the reverse direction. When the water is flowing in the direction of the main water flow through the water channel, the door 33 of the sluice gate is usually lifted and opened, and the water level on the left side of the sliding sluice 25 increases due to heavy rain and the reverse water flow begins to flow Sometimes, the sliding gate 25 is closed by lowering the door 33 of the sluice. Here, in order to keep hermetically sealed, water-tight rubber 33a is attached to the bottom surface and both side surfaces of the door 33 of the sluice. These watertight rubbers 33a are also fixed to the door body 33 by CFRP rubber pressing plates.

  Here, since the CFRP door 33 is very light as described above, the capability of the manual opening / closing mechanism including the spindle 29, the gear box 27, the manual handle 26, and the like for lifting the door is small, and the price is high. Even CFRP door body 33 using high carbon fiber can be made thin because of its high strength, and the amount of carbon fiber used can be reduced. In addition, the ability of the manual opening and closing mechanism can also be reduced. Therefore, the cost of the sliding sluice gate 25 as a whole can be reduced.

  Thus, since the door body of the sluice concerning this Embodiment 2 consists of a CFRP molded object, in order to give the same intensity | strength by design compared with FRP using glass fiber, it is a thickness of half to 2/3. That's all you need, and you can save weight. Carbon fiber is more expensive than glass fiber, but it can be used in half, and the door body of the sluice gate is lightened, so the capacity of the door opening and closing device can be set to a low load, so the sluice as a whole Can be reduced in cost.

Embodiment 4
Next, a sluice door body and door stop and a vertical (open / close) mechanism of the door body and a management bridge according to a fourth embodiment of the present invention will be described with reference to FIGS. 11 and 12. FIG. 11: is a front view which shows the whole structure of the electrically-operated opening-and-closing sluice using the door body of the sluice which consists of a CFRP molded object concerning Embodiment 4 of this invention, and a door stop. FIG. 12: is a side view which shows the whole structure of the electrically operated switching sluice and management bridge concerning Embodiment 4 of this invention.

  As shown in FIG. 11, the electric open / close sluice 41 according to the fourth embodiment is configured with a concrete gate pole 44 as the center, and from the bottom of the door stop 48 to the upper end of the gate pole 44 (of the protective fence 43). The height to the lower end is about 8.75 m. Since the sluice door 50 has a height of about 1.9 m and a width of about 2.2 m, the water pressure applied to this surface must be received. It is strengthened with a string. However, this sluice door body 50 is also made of CFRP molded body (skin plate, stringer, cross beam, gusset plate) according to the flowchart of FIG. Compared with the FRP molded body manufactured using only the above, the strength is significantly superior, and it is possible to make each part of the door body 50 thinner, so that the door body 50 can be reduced in weight.

  In the door body 50, a rack bar 45 fixed to a fixing member 49 bolted to the center of the upper end extends upward, and an upper end of the gate pole 44 is an operation table 44a surrounded by a substantially square protective fence 43. The electric rack type open / close device 42 is fixed to the substantially center thereof. The rack bar 45 is formed by rust-proof plating on a steel material, and since it is long, it penetrates through an intermediate swing 47 attached to a support member 46 fixed to the gate post 44 so as not to be bent in the middle, and is substantially vertical. It is supported so that it may be kept. When pulling up the rack bar 45 and the door body 50 attached to the lower end of the rack bar 45, the electric rack type switch 42 rotates the pinion gear engaged with the rack bar 45 by an electric motor and raises it.

  Two upper and lower rollers 50a are attached to the left and right sides of the door body 50. These rollers 50a are roller gates that rise and fall while rotating in contact with the surface of the door stop 48.

  At this time, the door body 50 is made of a CFRP molded body as described above, and since it is light, the lifting capacity of the electric rack type switch 42 is small, and the cost of the sluice 41 as a whole can be reduced. When lowering the door body 50, the electric rack type opening / closing device 42 is unlocked and lowered by the weight of the door body 50 and the rack bar 45. However, the door body 50 does not fall down to the bottom surface of the door stop 48 so that the brake is applied. The self-weight drop type electric rack type switch 42 is used.

  Next, the case where this electric opening-and-closing sluice 41 is used for the bank of a river is demonstrated with reference to FIG. In addition, about the member same as FIG. 11, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the water channel in which the door body 50 of the electric open / close sluice 41 is opened, there is a culvert 51 in which the ceiling / floor surface 52 and both side surfaces are covered with concrete. The underdrain 51 is connected to the river through the electrically operated sluice 41 and is formed in the basement of the rectangular surface 53a of the embankment 53, and the exit on the opposite side is to a waterway, river, lake, or shore outside the embankment 53. Communicates. Here, in order to go up to the operation table 44a of the electric rack type switch 42, since the embankment 53 has a rectangular surface 53a, it is necessary to provide a management bridge 55 from the top 53b of the embankment 53 to the operation table 44a.

The management bridge 55 includes a pair of bridge girders formed by connecting short girders 56 (the bridge girder on the opposite side is not shown hidden behind the bridge girder), and a footboard 57 that is passed between the pair of bridge girders and stepped on by a person. And it consists of a pair of protective fences 58 respectively attached to a pair of bridge girders. As these members (girder 56, tread plate 57, and protective fence 58), those manufactured as a CFRP molded body according to the flowchart of FIG. 9 are used. Further, after stepping plate 57 is compressed and ventilated by applying a pressure of about 0.7 kgf / cm ² in step S19 of the flowchart of FIG. 9, the surface is rubbed with gravel and then heated to about 140 ° C. to be completely cured. . By embedding gravel on the surface of the foot plate 57 made of the CFRP molded body in this way, the surface becomes uneven and difficult to slip, so that the foot plate 57 has a low risk of falling even when it snows or freezes in winter.

  Assembling the management bridge 55, the short girder 56 is abutted with each other and fixed together with a plurality of bolts and nuts. When a predetermined length is reached, the concrete block fixed to the operation table 44a and the top 53b of the dike 53 It passes between 55a, and it fixes with the volt | bolt to the predetermined position of the operation console 44a and the concrete block 55a, respectively. In this way, when the pair of bridge girders are installed in parallel at a predetermined interval, the tread plate 57 is passed between the pair of bridge girders and the tread plate 57 is fixed to the bridge girder with a plurality of bolts and nuts. In the third embodiment, the distance between the operation table 44a and the concrete block 55a is about 8 m, and the length of the step board 57 is about 2 m. Therefore, the step board 57 made of four CFRP molded bodies is used. Will be fixed between a pair of bridge girders.

  Similarly, a pair of guard fences 58 manufactured as CFRP molded bodies are fixed to a pair of bridge girders in accordance with the flowchart of FIG. 9 to complete a management bridge 55 made up of all CFRP molded bodies. Since this management bridge 55 can make each member much lighter than a conventional steel one, the construction is easy and the corrosion resistance is very good, and it does not rust like a steel one. So it can be used for a long time.

  In this way, the sluice door body 50, door-to-door 48, and management bridge 55 according to the fourth embodiment are made of a CFRP molded body, and therefore have the same design strength as FRP using glass fiber. For this purpose, a thickness of half to 2/3 is sufficient, and the weight can be reduced accordingly. Carbon fiber is more expensive than glass fiber, but the amount used can be reduced to about half, and the door body of the sluice gate is reduced in weight, so the capacity of the door opening and closing device can be set to a low load, Since the management bridge 55 is also lightened, the construction is facilitated, so that the electric open / close sluice 41 as a whole can be reduced in cost.

Embodiment 5
Next, a door body and a door stop of a natural open / close sluice (flap gate) according to a fifth embodiment of the present invention and a manufacturing method thereof will be described with reference to FIGS. FIG. 13: is a flowchart which shows the shaping | molding method of the HBRP (hybrid fiber reinforced plastic) molded object concerning Embodiment 5 of this invention. FIG. 14 is a schematic longitudinal sectional view showing the structure of the flap gate according to the fifth embodiment of the present invention. Fig.15 (a) is the front view seen from the river side which shows the whole structure of the flap gate concerning Embodiment 5 of this invention, (b) is a longitudinal cross-sectional view.

  First, the molding method of the HBRP molded body of the fifth embodiment will be described with reference to the flowchart of FIG. Steps S21 to S24 are exactly the same as steps S1 to S4 in FIG. Next, the process of the hand layup method is performed.

  That is, first, a glass roving cloth is laid in the mold (step S25), an unsaturated polyester resin as a thermosetting resin and a curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll (step). S26) Subsequently, a carbon fiber roving cloth is laid on the laminate (step S27), the unsaturated polyester resin and the curing agent / accelerator are poured into, and the operator smoothes the surface with an application roll (step S28). ) Next, a glass chopped strand mat is laid on the laminate (step S29), the unsaturated polyester resin and the curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll (step S30). Subsequently, a carbon fiber chopped strand mat is laid on the laminate (step S31), and unsaturated polyester resin and Pouring a hardener, hardening accelerator, the operator sounded the surface with the coating roll (step S32), and repeats this procedure until the stack reaches a predetermined height.

  Here, if the strength of the molded body (for example, the skin plate of the sluice door body) may be the same as that of the first embodiment, HBRP is superior in strength to FRP using only glass fiber. The height of the laminated body can be reduced, and the time required for the lamination process is shortened. In addition, the glass fiber roving cloth laminating process (steps S25 and S26), the carbon fiber roving cloth laminating process (steps S27 and S28), the glass chopped strand mat laminating process (steps S29 and S30), and the carbon fiber chopped strands. The mat lamination process (steps S31 and S32) is also performed at room temperature.

  Further, in the case of an HBRP molded body that requires higher strength, the process returns to step S29 as indicated by another arrow in FIG. 13 without returning to step S25 after step S32, and the glass roving cloth is again attached to the laminated body. An unsaturated polyester resin and a curing agent / curing accelerator are poured over and the surface is smoothed with an application roll by an operator, and a carbon fiber roving cloth is laid on the laminate, and the unsaturated polyester resin, curing agent / curing agent is cured. Repeat the procedure of pouring accelerator and leveling the surface with an application roll by the operator. That is, since the fiber roving cloth has a higher strength than the fiber chopped strand mat, the lamination process of the glass roving cloth and the carbon fiber roving cloth in steps S29, S30, S31, and S32 is repeated, so that the laminated body has a predetermined height. It takes about 45 minutes to complete.

  Further, in the case of an HBRP molded body that requires further strength, without returning to step S25 after step S32, the process returns to step S31 as indicated by an arrow branched from another arrow in FIG. A procedure is repeated in which a cloth is laid on the laminate, an unsaturated polyester resin and a curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll. That is, since the strength of the carbon fiber roving cloth is higher than that of the glass roving cloth, only the lamination process of the carbon fiber roving cloth in steps S31 and S32 is repeated, and it takes about 45 minutes until the laminated body reaches a predetermined height. Complete.

Then, a press machine as a pressurizing unit provided with an electric heater as a second heating unit is placed on the laminate as a molded body having a predetermined height, and set under the electric heater and the mold. The laminated body as a molded body is pressed at about 0.7 kgf / cm ² by a press machine while being heated to about 140 ° C. by the electric heater (step S33). As a result, the air inside the laminate is pushed out to form a dense structure, and when heated at a high temperature of about 140 ° C., the resin hardens in a short time and becomes an HBRP molded body with higher strength.

  When the heat curing and pressurization are completed in this way, the HBRP molded body is removed from the mold after it has cooled (step S34). In step S22, since the mold release agent is applied to the inner surface of the mold, the HBRP molded body is smoothly removed. As another method of manufacturing the HBRP molded body, in step S15 and step S17 in the flowchart of FIG. 9, instead of the carbon fiber roving cloth and the carbon fiber chopped strand mat, a hybrid fiber roving cloth made of carbon fiber and glass fiber is used. There is a method of stacking.

  In the method of manufacturing the HBRP molded body according to the flowchart of FIG. 13, the strength and price of the molded body can be controlled by changing the amount of lamination of the carbon fiber roving cloth mat and the glass roving cloth mat. In another method of laminating a hybrid fiber roving cloth, the strength and price of the molded product can be controlled by changing the ratio of carbon fiber and glass fiber of the hybrid fiber roving cloth in advance.

  In the case of an HBRP molded body in which both surfaces are likely to be exposed to sunlight, such as a skin plate of a sluice door body, it is necessary to form a gel coat film on both surfaces. In such a case, a release agent is applied also to the press surface (lower surface) of the press machine, a gel coat is applied thereon, and is cured by heating with an electric heater as a second heating means. Then, the gel coat film formed on the lower surface of the pressing machine in the heating / pressurizing step of step S33 is brought into close contact with the surface of the laminate to be integrated. If the HBRP compact is removed from the mold after it has cooled, the release agent is also applied to the lower surface of the press machine, so the cured gel coat film is smoothly separated from the lower surface of the press machine, and the gel coat is applied to both sides. An HBRP molded body on which a film is formed can be obtained.

  When the gel coat film is also attached to the upper surface of the laminate as described above, a heating / pressurizing step (step) is performed immediately after the carbon fiber roving cloth lamination step (steps S31 and S32) as shown in the flowchart of FIG. Rather than performing S33), the carbon fiber chopped strand mat and the heating / pressurizing step (step S33) are carried out after sandwiching the carbon fiber chopped strand mat laminating step (steps S27, S28) at least once. Since the adhesiveness of a gel coat film is high, it is more preferable.

  Various HBRP products can be obtained by combining the HBRP molded bodies having various shapes and sizes thus manufactured. As a specific example, the case of the door body 61 of the flap gate 60 shown in FIGS. 14 and 15 will be described.

  As shown in FIG. 14, the flap gate 60 is a kind of a naturally open / closed sluice. Normally, water flows from a culvert whose ceiling, floor, and both sides are covered with concrete C1 toward the river. The door body 61 is made lightly and is suspended by a hinge 62. The door body 61 is naturally opened as indicated by a solid line by the pressure of water flowing in the underdrain, and drains the water in the underdrain to the river. On the other hand, when heavy rain falls and the water level of the river increases and water tries to enter in the reverse water direction from the river, the door body 61 closes tightly to a door stop (not shown) as indicated by an imaginary line due to the water pressure, and the door The rubber 63 for sealing provided around the back side of the body 61 prevents river water from entering the underdrain. The sealing rubber 63 attached to the four sides is also fixed to the door body 61 by an HBRP rubber pressing plate.

  In this way, the flap gate 60 can be moved at a small water level because the door body (gate body) 61 is made of an HBRP molded body and is light in weight. It is excellent, and in the event of an emergency, it is excellent in preventing backwater as indicated by an imaginary line. Similarly, the gate body (gate body) for the purpose of natural drainage and natural water stoppage of swing gates (horizontal opening) and miter gates (open doors), which are naturally open / closed sluice gates, is manufactured by HBRP or CFRP. Lightweight, natural open / close sluice with excellent drainage conditions and backwater prevention.

  Next, detailed structures of the flap gate 60 and the door body (gate body) 61 will be described with reference to FIG. As shown in FIG. 15A, the door body 61 of the flap gate 60 is suspended by a pair of hinges 62 attached to the concrete portion C1 at the outlet of the culvert. As shown in FIG. 15B, the hinge 62 is a pair of support channels 62a each fixed to the concrete C1 side, and is suspended between the support channels 62a and rotatably supported by pins 62b. The lower plate 62c is configured by a fixing jig 62e fixed to the upper end of the door body 61, which is rotatably fixed by a pin 62d across the lower end of the suspension plate 62c.

  The door body 61 is composed of an HBRP molded body manufactured according to the flowchart of FIG. 13, and a single skin plate 65 has three C-channel type cross beams 66 and three C-channel type three beams. A vertical girder 67, three flat plate-like gusset plates 68 attached to cover each vertical girder 67, and a pair of skin plate reinforcing jigs 69 are assembled by a plurality of bolts and nuts. Further, as shown in FIG. 15B, along the outer edge of the skin plate 65, a sealing P-shaped rubber 63 is adhered to the upper edge, lower edge, and both side edges of the skin plate 65 without any gap. .

  On the other hand, on the concrete portion C1 side of the culvert exit, four L-channel door stops 64 made of HBRP molded bodies are formed, and a square that is slightly larger than the door body 61 is formed and embedded in the concrete portion C1. . As mentioned above, when the water level of the river rises due to heavy rain and the river water seems to flow back into the underdrain, the door body 61 that is light and excellent in moving performance is caused by a subtle change in the water pressure of the river. A close state is formed by P-type rubber 63 in close contact with 64, thereby preventing backflow. Here, in order to support the door stop 64 when the water level of the river further rises and the water pressure applied to the door body 61 and the door stop 64 becomes high, the supporting iron plate T1 comes into contact with the corner of the door stop 64 and concrete. It is embedded in the part C1.

  Thus, the flap gate 60 of the fifth embodiment is movable because the strength and the weight can be reduced by using the door body 61 and the door stop 64 made of an HBRP (hybrid fiber reinforced plastic) molded body. The performance is improved, and it becomes a natural open / close sluice with excellent drainage conditions and backwater prevention. Further, the strength of the HBRP molded body can be finely adjusted, and the flap gate 60 with an appropriate product price can be obtained.

  If the flap gate 60 is composed of a door body 61 made of a CFRP (carbon fiber reinforced plastic) molded body and a door-to-door 64, the strength is further increased and the weight can be further reduced. Improves but increases cost. Therefore, it is necessary to determine the material of the door body 61 and the door stop 64 in consideration of necessary strength, movable performance, and product price. The same applies to the swing gate and miter gate, and the same applies to the slide gate of the third embodiment and the roller gate of the fourth embodiment.

Embodiment 6
Next, a method for forming an FRP molded body according to Embodiment 6 of the present invention will be described with reference to FIGS. 16 to 18. FIG. 16 is a flowchart showing a method for forming a GFRP (glass fiber reinforced plastic) molded body according to the sixth embodiment of the present invention. FIG. 17 is a flowchart showing a molding method of a CFRP (carbon fiber reinforced plastic) molded body according to a first modification of the sixth embodiment of the present invention. FIG. 18 is a flowchart showing a method for forming an HBRP (hybrid fiber reinforced plastic) molded body according to a second modification of the sixth embodiment of the present invention.

  As shown in FIG. 16, the molding method of the GFRP (glass fiber reinforced plastic) molded body according to the sixth embodiment is the vinylon before and after the glass fiber and thermosetting resin lamination step (steps S47 to S50). It is characterized in that one or two roving cloths are laminated. The molding method of the GFRP molded body according to the present invention is heated and cured, and pressure is applied to a predetermined thickness, so that the surface of the finished product is sufficiently smooth and beautiful, but in some cases, glass roving If you look closely at the marks such as crosses, they may appear slightly raised. Therefore, this process is performed in order to ensure a smooth finished surface more reliably.

  First, a mold of a GFRP molded body (for example, a sluice door skin plate) manufactured in step S41 is assembled. At this time, heating means (for example, an electric heater) for heating the mold is set under the mold. Next, a release agent is applied to the inner surface of the assembled mold (step S42), and a gel coat is further applied to the inner bottom surface of the mold (step S43), and heated to a range of approximately 25 to 45 ° C. with an electric heater. The gel coat is cured (step S44). When the GFRP molded body is completed, this gel coat serves to improve the appearance of this surface and to block the ultraviolet rays in sunlight to improve the weather resistance of the GFRP molded body.

  Next, a vinylon roving cloth is laid on the cured gel coat in the mold (step S45), and an unsaturated polyester resin as a thermosetting resin and a curing agent / curing accelerator are poured into the mold. By leveling the surface (step S46) and performing this procedure twice, two vinylon roving cloths are laminated.

  Then, the usual hand lay-up process is performed. That is, a glass chopped strand mat is laid on a vinylon roving cloth (step S47), an unsaturated polyester resin and a curing agent / curing accelerator are applied, and the operator smoothes the surface with an application roll (step S48). ) Subsequently, a glass roving cloth is laid on the laminate (step S49), an unsaturated polyester resin and a curing agent / curing accelerator are applied, and the operator smoothes the surface with an application roll (step S50). This procedure is repeated in about 5 minutes until the laminate reaches a predetermined height, and is completed in about 1 hour and 20 minutes. The glass chopped strand mat laminating process (steps S47 and S48) and the glass roving cloth laminating process (steps S49 and S50) are performed at room temperature.

  Further, in the case of a GFRP molded body that requires higher strength, the process returns to step S49 as indicated by another arrow in FIG. 16 without returning to step S47 after step S50, and the glass roving cloth is again attached to the laminated body. An operator repeats the procedure of placing an unsaturated polyester resin and a curing agent / curing accelerator on the top and leveling the surface with an application roll. That is, since the strength of the glass roving cloth is higher than that of the glass chopped strand mat, only the glass roving cloth lamination process in steps S49 and S50 is repeated, and it takes about 1 hour and 20 minutes until the laminated body reaches a predetermined height. Complete with.

Then, a vinylon roving cloth is again laid on the laminated body as a molded body having a predetermined height (step S51), and the unsaturated polyester resin and the curing agent / curing accelerator are poured into the laminated body. The surface is smoothed with a roll (step S52), a press machine as a pressurizing means provided with an electric heater as a second heating means is placed, and a compact is formed by the electric heater and the electric heater set under the mold. The laminated body is pressed at about 0.7 kgf / cm ² by a press while heating to about 140 ° C. (step S53). As a result, the air inside the laminate is pushed out to form a dense structure, and when heated at a high temperature of about 140 ° C., the resin hardens in a short time and becomes a GFRP molded body with higher strength.

  At the same time, since the vinylon fibers constituting the vinylon roving cloth laminated on both sides of the molded body are crushed by pressure, traces of glass roving cloth and the like are not slightly raised, and the design is superior. A smooth finished surface can be reliably obtained, and the commercial value is also improved. Thus, when heat curing and pressurization are completed, the GFRP molded body is removed from the mold after it has cooled (step S54). In step S42, since the mold release agent is applied to the inner surface of the mold, the GFRP molded product is smoothly removed.

  In addition, in the case of a GFRP molded body in which both surfaces may be exposed to sunlight, such as a skin plate of a sluice door body, it is necessary to form a gel coat film on both surfaces. In such a case, a release agent is applied also to the press surface (lower surface) of the press machine, a gel coat is applied thereon, and is cured by heating with an electric heater as a second heating means. Then, the gel coat film formed on the lower surface of the press machine in the heating / pressurizing step of step S53 is brought into close contact with the surface of the laminate to be integrated. When the GFRP molded body is cooled and removed from the mold, the release agent is also applied to the lower surface of the press machine, so the cured gel coat film is smoothly separated from the lower surface of the press machine, and the gel coat is applied to both sides. A GFRP molded product with a film formed can be obtained.

  Next, a method for molding a CFRP (carbon fiber reinforced plastic) molded body according to a first modification of the sixth embodiment will be described with reference to FIG. Steps S61 to S64 are exactly the same as steps S41 to S44 in FIG. Subsequently, a vinylon roving cloth is laid on the cured gel coat in the mold (step S65), and an unsaturated polyester resin and a curing agent / curing accelerator as a thermosetting resin are poured into the mold. By leveling the surface (step S66) and performing this procedure twice, two vinylon roving cloths are laminated.

  Then, the usual hand lay-up process is performed. That is, a carbon fiber chopped strand mat is laid on a vinylon roving cloth (step S67), an unsaturated polyester resin and a curing agent / curing accelerator are applied, and the operator smoothes the surface with an application roll (step). S68) Subsequently, a carbon fiber roving cloth is laid on the laminate (step S69), the unsaturated polyester resin and the curing agent / curing accelerator are applied, and the operator smoothes the surface with an application roll (step S69). S70), this procedure is repeated until the laminated body reaches a predetermined height in about 5 minutes, and is completed in about 1 hour and 20 minutes. The carbon fiber chopped strand mat laminating process (steps S67 and S68) and the carbon fiber roving cloth laminating process (steps S69 and S70) are performed at room temperature.

  Further, in the case of a CFRP molded body requiring higher strength, the process returns to step S69 as indicated by another arrow in FIG. 17 without returning to step S67 after step S70, and the carbon fiber roving cloth is again laminated. A procedure is repeated in which an unsaturated polyester resin and a curing agent / accelerator are poured and the operator smoothes the surface with a coating roll. That is, since the strength of the carbon fiber roving cloth is higher than that of the carbon fiber chopped strand mat, only the glass roving cloth lamination process in steps S69 and S70 is repeated, and it takes about 1 hour until the laminated body reaches a predetermined height. Complete in 20 minutes.

Then, a vinylon roving cloth is again laid on the laminate as a molded body having a predetermined height (step S71), and the unsaturated polyester resin and the curing agent / curing accelerator are poured into the laminated body. The surface is smoothed with a roll (step S72), a press machine as a pressurizing means provided with an electric heater as a second heating means is placed, and a compact is formed by the electric heater and the electric heater set under the mold. As the laminated body is heated to about 140 ° C., it is pressurized at about 0.7 kgf / cm ² by a press machine (step S73). As a result, the air inside the laminate is pushed out to form a dense structure, and when heated at a high temperature of about 140 ° C., the resin hardens in a short time and becomes a CFRP molded body with higher strength.

  At the same time, because the vinylon fibers that make up the vinylon roving cloth laminated on both sides of the molded body are crushed by pressure, traces of carbon fiber roving cloth etc. do not appear slightly, and it is more excellent in design A smooth and smooth surface can be reliably obtained, and the commercial value is also improved. In this way, when the heat curing and pressurization are completed, the CFRP molded body is removed from the mold after being cooled (step S74). In step S62, since the mold release agent is applied to the inner surface of the mold, the CFRP molded product is smoothly removed.

  In the case of a CFRP molded body in which both surfaces may be exposed to sunlight, such as a skin plate of a sluice door body, it is necessary to form a gel coat film on both surfaces. In such a case, a release agent is applied also to the press surface (lower surface) of the press machine, a gel coat is applied thereon, and is cured by heating with an electric heater as a second heating means. Then, the gel coat film formed on the lower surface of the press machine in the heating / pressurizing step of step S73 is brought into close contact with the surface of the laminate to be integrated. When the CFRP molded body is cooled and removed from the mold, the release agent is also applied to the lower surface of the press machine, so the cured gel coat film is smoothly separated from the lower surface of the press machine, and the gel coat is applied to both sides. A CFRP molded body on which a film is formed can be obtained.

  Next, a method for forming an HBRP (hybrid fiber reinforced plastic) molded body according to a second modification of the sixth embodiment will be described with reference to FIG. Steps S81 to S84 are exactly the same as steps S41 to S44 in FIG. Subsequently, a vinylon roving cloth is laid on the cured gel coat in the mold (step S85), and an unsaturated polyester resin and a curing agent / curing accelerator as a thermosetting resin are poured into the mold. By leveling the surface (step S86) and performing this procedure twice, two vinylon roving cloths are laminated.

  Then, a normal HBRP molded body hand lay-up process is performed. That is, a glass chopped strand mat is laid on a vinylon roving cloth (step S87), an unsaturated polyester resin and a curing agent / curing accelerator are applied, and the operator smoothes the surface with an application roll (step S88). Subsequently, a carbon fiber chopped strand mat is laid on the laminate (step S89), the unsaturated polyester resin and the curing agent / curing accelerator are applied, and the operator smoothes the surface with an application roll (step S90). ), Laying a glass roving cloth (step S91), applying an unsaturated polyester resin and a curing agent / accelerator, leveling the surface with an application roll (step S92), laying a carbon fiber roving cloth (Step S93), an unsaturated polyester resin and a curing agent / curing accelerator are applied and applied by the operator. Rang the surface with Lumpur (step S94), repeatedly until the laminate of this procedure in about 10 minutes reaches a predetermined height, completed in about 1 hour. In addition, these lamination processes (steps S87 to S94) are also performed at room temperature.

  Further, in the case of an HBRP molded body that requires higher strength, the process returns to step S91 as indicated by another arrow in FIG. 18 without returning to step S87 after step S94, and the glass roving cloth is again attached to the laminated body. An unsaturated polyester resin and a curing agent / curing accelerator are poured over and the surface is smoothed with an application roll by an operator, and a carbon fiber roving cloth is laid on the laminate, and the unsaturated polyester resin, curing agent / curing agent is cured. Repeat the procedure of pouring accelerator and leveling the surface with an application roll by the operator. That is, since the fiber roving cloth has higher strength than the fiber chopped strand mat, only the lamination process of the glass roving cloth and the carbon fiber roving cloth in steps S91, S92, S93, and S94 is repeated, so that the laminated body has a predetermined height. It takes about an hour to complete.

  Further, in the case of an HBRP molded body that requires further strength, the process returns to step S93 as indicated by the arrow branched from another arrow in FIG. 18 without returning to step S87 after step S94, and the carbon fiber roving is performed again. A procedure is repeated in which a cloth is laid on the laminate, an unsaturated polyester resin and a curing agent / curing accelerator are poured, and the operator smoothes the surface with an application roll. That is, since the strength of the carbon fiber roving cloth is higher than that of the glass roving cloth, only the lamination process of the carbon fiber roving cloth in steps S93 and S94 is repeated, and it takes about one hour until the laminated body reaches a predetermined height. Complete.

Then, a vinylon roving cloth is again laid on the laminate as a molded body having a predetermined height (step S95), and the unsaturated polyester resin and the curing agent / curing accelerator are poured into the laminate. The surface is smoothed with a roll (step S96), a press machine as a pressurizing means provided with an electric heater as a second heating means is placed, and a compact is formed by the electric heater and the electric heater set under the mold. The laminated body is pressed at about 0.7 kgf / cm ² by a press while heating to about 140 ° C. (step S97). As a result, the air inside the laminate is pushed out to form a dense structure, and when heated at a high temperature of about 140 ° C., the resin hardens in a short time and becomes an HBRP molded body with higher strength.

  At the same time, because the vinylon fibers that make up the vinylon roving cloth laminated on both sides of the molded body are crushed by pressure, traces of carbon fiber roving cloth etc. do not appear slightly, and it is more excellent in design A smooth and smooth surface can be reliably obtained, and the commercial value is also improved. When the heat curing and pressurization are completed in this way, the HBRP molded body is removed from the mold after it has cooled (step S98). In step S82, since the mold release agent is applied to the inner surface of the mold, the HBRP molded body is smoothly removed.

  In the case of an HBRP molded body in which both surfaces are likely to be exposed to sunlight, such as a skin plate of a sluice door body, it is necessary to form a gel coat film on both surfaces. In such a case, a release agent is applied also to the press surface (lower surface) of the press machine, a gel coat is applied thereon, and is cured by heating with an electric heater as a second heating means. Then, the gel coat film formed on the lower surface of the press machine in the heating / pressurizing step of step S97 is brought into close contact with the surface of the laminate to be integrated. If the HBRP compact is removed from the mold after it has cooled, the release agent is also applied to the lower surface of the press machine, so the cured gel coat film is smoothly separated from the lower surface of the press machine, and the gel coat is applied to both sides. An HBRP molded body on which a film is formed can be obtained.

  The method for molding the FRP molded body according to the sixth embodiment described above can be applied to the sluice door body and the sluice door of the first embodiment as well as to the FRP door body of the sluice gate of the second embodiment. The present invention is applicable to the door and door of the sluice of the third embodiment, the door and door of the sluice of the fourth embodiment, the management bridge, and the door and door of the flap gate of the fifth embodiment. be able to. Furthermore, the present invention can be applied to the screen of the seventh embodiment described below, the dust remover of the eighth embodiment, and the pedestrian bridge of the ninth embodiment.

Embodiment 7
Next, a screen according to Embodiment 7 of the present invention will be described with reference to FIG. FIG. 19 is a front view showing the configuration of the screen according to the seventh embodiment of the present invention.

  The screen 71 shown in FIG. 19 is installed in various waterways such as rivers, lakes, dams, and other intakes, irrigation canals, drainage canals, etc., and blocks incoming dust and flows into the intakes and irrigation canals. It is for preventing. In this screen 71, 17 vertical columns 72 are fixed to three horizontal columns 73 with stainless steel bolts and nuts. Both the vertical columns 72 and the horizontal columns 73 are manufactured according to the flowchart of FIG. CFRP (carbon fiber reinforced plastic) molded body. For this reason, because it is excellent in strength, even if large dust such as driftwood flows, it can be dammed with a margin, and since it is lightweight, it is a low-performance switch even when it is an openable screen Can be opened and closed. Furthermore, since it is excellent in corrosion resistance and does not rust even when installed in water, it can be used for a long period of time.

  Here, if the screen 71 is installed in a water intake or a water channel for a long period of time, dammed dust accumulates between the vertical columns 72 and the flow of water becomes worse. Therefore, it is necessary to periodically remove dust accumulated on the screen 71. Even in this case, since the screen 71 is light, it is easy to pull up from the water, and it is easy to perform maintenance.

  Thus, since the screen 71 according to the seventh embodiment is made of a CFRP molded body, the screen 71 can be opened and closed with a strong, light, and low-capacity switch, so that the cost can be reduced as a whole. .

  The screen 71 of the seventh embodiment is used for a relatively small water channel. When used in large waterways, intakes, rivers, etc., it is difficult to remove the dust collected by pulling it up from the water one by one, and it is necessary to remove the dust collected in the installation. Next, such a large screen (dust remover) will be described.

Embodiment 8
Next, a dust remover and its peripheral equipment according to Embodiment 8 of the present invention will be described with reference to FIGS. FIG. 20 is a longitudinal sectional view showing the entire configuration of the dust remover and its peripheral equipment according to the eighth embodiment of the present invention. FIG. 21: is a top view which shows the whole structure of the dust remover concerning Embodiment 8 of this invention. FIG. 22 is a front view showing the overall configuration of the dust remover according to the eighth embodiment of the present invention. FIG. 23 is a cross-sectional view showing details of a part of the dust remover according to the eighth embodiment of the present invention. FIG. 24 is a longitudinal sectional view showing the overall configuration of the dust remover according to the eighth embodiment of the present invention.

  The dust remover 75 shown in FIG. 20 is installed in various water channels such as rivers, lakes, dams, and irrigation channels, drainage channels, and the like. It is a device for preventing inflow into the irrigation channel. In addition, the dammed dust is picked up by the rake 77 and transferred by the horizontal belt conveyor 80 so that the dammed dust does not accumulate and obstruct the water flow, and is collected at a predetermined dust collecting place. Therefore, since the dust that has been dammed in the state of being installed in the water channel can be removed, a large apparatus suitable for a wide water channel can be obtained.

  The dust remover 75 includes a pair of plate-like frames 83 installed at both ends of the water channel, a plurality of girders 84 that connect and reinforce between the pair of frames 83, and a water channel upstream of the frame 83. A fixed screen 76 that is attached to both ends of the frame, an auxiliary screen 78 that is rotatably attached around the rotation shaft 78a in the vicinity of the water channel bottom C2, and a two-stage sprocket made of stainless steel that is attached to the upper end of the frame 83. A stainless steel conveyor chain 79 that moves along the frame 83 as the larger sprocket of 89 rotates, and four rakes 77 that are attached to the conveyor chain 79 at equal intervals and move together (see FIG. 20). Only one is shown), and the upper end of the frame 83 is bent along the frame 83 in close contact with the upper end of the fixed screen 76. And a dust plate 82 to reach.

  Each time the rake 77 rotates, the auxiliary screen 78 is pushed by the rake 77 and rotates counterclockwise in the drawing (counterclockwise) around the rotation shaft 78 a to pass the rake 77 and to the auxiliary screen 78. The accumulated dust is scooped up, and after passing through the rake 77, it is returned to its original position by the repulsive force of the spring stored in the rotating shaft 78a.

  Among these members, a pair of frames 83, a plurality of girders 84, a fixed screen 76 and an auxiliary screen 78, four rakes 77, and a dust plate 82 are manufactured according to the flowchart of FIG. It consists of a CFRP (carbon fiber reinforced plastic) molded body.

  The conveyor chain 79 and the rake 77 move clockwise (clockwise) in FIG. That is, it rises along the fixed screen 76 and the dust plate 82 and descends on the downstream side (back side). Below the point where the rake 77 rises along the dust plate 82 and drops the raised dust, a horizontal belt conveyor 80 is provided extending in a direction perpendicular to the paper surface, and has fallen from the dust remover 75. The dust G1 is received and conveyed in the direction shown in the figure.

  In the vicinity of the horizontal belt conveyor 80, an inspection rack 90 is provided along the longitudinal direction of the horizontal belt conveyor 80, and the step is made one step higher than the conveying surface 80 b of the horizontal belt conveyor 80 by combining the girders 90 a. (Treadboard) 93 is supported horizontally. Both ends of the step 93 and the opposite side of the horizontal belt conveyor 80 are surrounded by a protective fence 91, and the horizontal belt conveyor 80 side is open. Further, a protective fence 91 is cut and a ladder 92 is attached to an intermediate position in the longitudinal direction of the inspection rack 90, and an operator climbs on the step 93 with this ladder 92, and the state of the horizontal belt conveyor 80 is observed from above. Can be checked.

  For example, when a large driftwood is caught and the smooth operation of the horizontal belt conveyor 80 is hindered, an operation panel (not shown) provided in step 93 of the inspection rack 90 is operated to A speed reduction motor (not shown) for moving the conveying surface 80b and a cyclo speed reducer 87 for moving the conveyor chain 79 of the dust remover 75 are temporarily stopped to remove a large drifted wood and the like, and then the operation is resumed on the operation panel.

  The cyclo reducer 87 is placed on a support inspection table 85 fixed to one end of a support frame (not shown) passed between two support pillars 85a fixed to the frames 83 at both ends. A protective fence 85b and a long ladder 86 are attached to the support inspection table 85, and an operator can climb the long ladder 86 and go up to the support inspection table 85, and a cyclo reducer 87, a conveyor chain 79, etc. Maintenance inspection can be performed. A drive belt 88 is hung on a pulley 87 a attached to the drive shaft of the cyclo reducer 87, and this drive belt 88 is also hung on the smaller pulley of the two-stage sprocket 89. Thus, when the cyclo reducer 87 is operated, the driving force is transmitted as a rotational force to the two-stage sprocket 89, and the conveyor chain 79 and the four rakes 77 attached thereto start moving at a predetermined speed. .

  A dust chute 95 is also provided between the dust remover 75 and the horizontal belt conveyor 80 so as to extend in the longitudinal direction perpendicular to the paper surface. The dust chute 95 is provided by the horizontal belt conveyor 80 and the inspection rack 90. This is to prevent dust from falling into the water channel from between the concrete ceiling C2 that culverts the water channel mounted and the dust remover 75. Further, an FRP corner drop 81 is fitted into a groove C3 provided facing the concrete portion C2 that forms the water channel. The FRP corner drop 81 is a part of the underwater portion of the dust remover 75. When performing maintenance and inspection, the water flow is blocked so that the water channel bottom C2 appears, and has the same structure as the FRP door body of the sluice described above, and is manufactured in the same process.

  In addition, the tension adjuster 94 to which the upper two-stage sprocket 89 at the upper end of the dust remover 75 is fixed is moved back and forth by tightening or loosening the outer tension adjusting nut 94a, and the tension of the conveyor chain 79 is increased. It is for adjusting.

  Of these members, except for the member of the dust remover 75 described above, the girder 80a of the horizontal belt conveyor 80, the girder 90a of the inspection rack 90, the protective fence 91, the step 93, the support inspection table 85 and the support pillar 85a, the protective fence 85b, dust chute 95, and FRP corner drop 81 are made of a CFRP (carbon fiber reinforced plastic) molded body manufactured according to the flowchart of FIG.

  Next, the dust remover 75 and its peripheral equipment according to the eighth embodiment will be further described with reference to the plan view of FIG. 21 and the front view of FIG. In addition, about the member same as FIG. 20, the same code | symbol is attached | subjected and some description is abbreviate | omitted.

  As shown in FIGS. 21 and 22, one dust remover 75 according to the eighth embodiment is installed in each of the water channels divided into two by the concrete wall C2. Among them, the FRP corner drop 81 is fitted in the groove C3 provided facing the concrete wall C2 in the right water channel. As described above, the FRP corner drop 81 is an underwater portion of the dust remover 75. This is for damming the water flow when performing maintenance and inspection, and since it is not normally used, it will be described here that there is no FRP corner drop 81.

  In the plan view of FIG. 21, the support frame 85b passed between the frames 83 not shown in FIG. 20 is clearly shown. The support frame 85b is horizontally fixed between two support pillars 85a erected on each of the pair of frames 83, and the cyclo reducer is mounted on the support inspection table 85 fixed on the support frame 85b. 87 is placed. When the cyclo reducer 87 is driven, four rakes (not shown) scoop up the dust on the auxiliary screen 78 and the fixed screen 76 one after another and pass over the dust plate 82, and the conveying surface of the horizontal belt conveyor 80. Dust is dropped on 80b. The horizontal belt conveyor 80 is normally operated in conjunction with the cyclo reducer 87, and its conveying surface 80b moves to the left, and the dust G1 scooped up by the two dust removers 75 is transferred to a predetermined dust. Transport to the collection location 100.

  In the plan view of FIG. 22, the center of the fixed screen 76 and the auxiliary screen 78 is broken to show three dust remover girders 84 each. These dust remover girders 84 not only connect a pair of frames 83 to increase the overall strength of the dust remover 75, but also support the fixed screen 76. Details will be described with reference to FIG. In addition, it is illustrated that a speed reduction motor 96 that moves the belt (conveying surface) 80b of the horizontal belt conveyor 80 is also installed on the dust collecting place 100 side. The belt drum 97 installed at the opposite end of the horizontal belt conveyor 80 can be moved back and forth with respect to the reduction motor 96 as shown in the figure, whereby the tension of the belt 80b of the horizontal belt conveyor 80 is increased. Can be adjusted.

  Next, detailed structures of the fixed screen 76 and the rake 77 will be described with reference to FIG. FIG. 23 is divided into three parts even though it is a cross sectional view. The left side is a cross sectional view of one of the frame 83, the girder 84, the fixed screen 76 and the rake 77, and the middle is the girder 84, the fixed screen 76 and A vertical sectional view of the rake 77, and a right side is a horizontal sectional view of the beam 84, the dust plate 82 and the rake 77.

  As shown in the drawing on the left side, guide rails 83 a around which a stainless steel conveyor chain 79 for circulating the rake 77 along the outer edge of the frame 83 are provided on the upper and lower sides of the frame 83. A girder 84 having an H-shaped cross section is fixed to the inner central portion of the frame 83 with stainless steel bolts and nuts. On the other hand, the fixed screen 76 includes a stringer 76a that reaches the upper end of an auxiliary screen (not shown), a horizontal axis 76b made of stainless steel that passes through it in the horizontal direction with a set of about 14 pieces and is secured with nuts at both ends, and the stringer In order to keep the interval between the 76a constant, the distance rod 76c inserted through each of the vertical beams 76a and penetrating the horizontal shaft 76b is combined.

  A plurality of stainless male screws 76d are welded to a set of fixed screens 76 to several distance rods 76c, and tightened with a stainless steel nut 76e through a through-hole provided in a girder 84 having an H-shaped section. And is fixed to the digit 84. In this way, the fixed screens 76 are arranged and fixed one after another (four sets in the present embodiment 8), and the fixed screen 76 of the dustproof device 75 is assembled.

  Next, in the rake 77, a C-shaped channel support plate 77b as shown in the center figure is screwed to a stainless steel conveyor chain 79, and the stringer is attached to the support plate 77b as shown in the left figure. Rake plates 77a are fixed at the same interval as 76a and alternately. As described above, the rake 77 raises the front surface of the fixed screen 76 to scavenge dust collected in front of the fixed screen 76. In the sixth embodiment, the rake 77 is a vertical girder of the fixed screen 76. The dust trapped between the stringers 76a is also scraped off at the rear end portion of the rake plate 77a that has entered between the spaces 76a.

  However, in this case, when a hard object such as a stone is tightly sandwiched between the stringers 76a, the entire rake 77 cannot be raised without being scraped by the rear end portion of the rake plate 77a. is there. Therefore, it is more preferable that the rear end of the rake plate 77a is made of rubber, and if there is a dust trap that is tightly sandwiched, the rake plate 77a can be deformed so as to be able to get over the rake 77 as a whole. As a result, when the rake 77 passes over the dust plate 82 as shown on the right side, the rear end of the rake plate 77a is very close to the dust plate 82, so that the dust plate 82 is at the rear end of the rake plate 77a. However, if the rear end of the rake plate 77a is made of rubber, the risk is eliminated.

  Next, the overall arrangement of the guide rails 83a of the conveyor chain 79 and the more detailed structure of the auxiliary screen 78 will be described with reference to FIG.

  As shown in FIG. 24, the guide rail 83a starts from below the sprocket 89 (rotates clockwise in the figure) that moves the conveyor chain 79, curves substantially parallel to the dust plate 82, and then with respect to the horizontal plane. It extends downward at an angle of about 75 degrees, turns into a U shape, passes under the lower end of the fixed screen 76, and again extends upward at an angle of about 75 degrees with respect to the horizontal plane. Then, it is curved substantially parallel to the dust plate 82 and is interrupted before the sprocket 89.

  The above guide rail 83a is fixed to the frame 83 on the cyclo reducer (not shown) side, but the guide rail 83a is also fixed symmetrically to the opposite frame 83 opposite to this, and the guide rail 83a. And a sprocket 89 for moving the conveyor chain 79 is provided. Then, as shown in FIG. 23, a C-shaped channel support plate 77b is bridged and fixed at four locations between the pair of left and right conveyor chains 79. Although only two are shown in FIG. A number of rakes 77 are formed.

  These rakes 77 move integrally with the conveyor chain 79, but the rotation shaft 98 of the sprocket 89 is passed between the pair of frames 83 so that the moving speed of the pair of left and right conveyor chains 79 does not deviate. A pair of left and right sprockets 89 are fixed to the rotating shaft 98. Thus, the synchronized state is maintained without the positions of the left and right conveyor chains 79 to which the support plate 77b of the rake 77 is fixed being displaced.

  When the rake 77 passes under the fixed screen 76, as described above, the auxiliary screen 78 rotates counterclockwise in the figure around the rotation shaft 78a to pass the rake 77. As shown in the drawing, the auxiliary screen plates 78b, which are close to each other, have a special shape with their tips extending and curved. As a result, the rake 77 pushes and rotates the auxiliary screen 78, scoops up dust accumulated on the auxiliary screen 78, and the operation of returning to the original position by the spring in the rotation shaft 78a after the passage is performed more smoothly. Most of the other auxiliary screen plates 78c apart from the left and right frames 83 have the same shape as that shown in FIG.

  As described above, in the dust remover 75 according to the eighth embodiment, all members including the cyclo reducer 87 and the inspection table 85 and the long ladder 86 are connected and reinforced by connecting the left and right frames 83 therebetween. It is assembled to the girder 84. Therefore, it is only necessary to complete the assembly of the dust remover 75 at the factory, transport it with a trailer, etc., and install it at the installation location, and work on the site is extremely small. Here, the dust remover 75 of the eighth embodiment includes a pair of frames 83, a plurality of girders 84, a fixed screen 76 and an auxiliary screen 78, four rakes 77, a dust plate 82, and a support inspection. The base 85, the support column 85a, and the support frame 85b are made of a CFRP (carbon fiber reinforced plastic) molded body manufactured according to the flowchart of FIG.

  As a result, the total weight is reduced to about half compared to a conventional dust remover made of steel, and the transportation and installation work becomes very easy. During installation, the crane lifting member is engaged with the through holes of the lifting support 99 projecting from the frame 83 in FIG. 24, and lifted from the loading platform such as a trailer and suspended from the installation site. Can be taken down. In addition, since the dust remover 75 uses all stainless steel members, including bolts and nuts, as the parts that get wet with water other than the CFRP molded body, most of the conventional dust removers are made of steel. It can be used semi-permanently without the paint or plating peeling off and rusting.

  Since the horizontal belt conveyor 80 also has the girders 80a made of a CFRP molded body, the inspection rack 90 also has the girders 90a, the guard fence 91, and the step 93 made of a CFRP molded body, and the dust chute 95 is made entirely of a CFRP molded body. Compared to steel products, it is extremely light and easy to transport and install.

  In the dust remover 75 of the eighth embodiment, an operator operates an operation panel (not shown) installed on the inspection rack 90 and operates at an appropriate time while checking the state of dust accumulation on the fixed screen 76. 77 is moved to scavenge dust, and at the same time, the horizontal belt conveyor 80 is also moved so that the dust collected by the rake 77 is dropped and transported to the dust collection place 100, and the dust on the fixed screen 76 is moved. If almost removed, the rake 77 and the horizontal belt conveyor 80 may be manually operated.

  For automatic operation, a dust detection sensor such as an optical sensor may be attached to the fixed screen 76, and a switch for automatically moving the rake 77 when a certain amount of dust has accumulated may be turned on. It is also possible to keep statistics on how many times / minutes the day is the best, and to use the timer to automatically drive based on the results.

Embodiment 9
Next, the pedestrian bridge and its parts according to the ninth embodiment of the present invention will be described with reference to FIG. FIG. 25A is a front view showing the overall configuration of the footbridge according to the ninth embodiment of the present invention, FIG. 25B is a plan view, and FIG.

  As shown in FIG. 25A, the pedestrian bridge 101 according to the ninth embodiment is a pedestrian pedestrian bridge for crossing the roadway 102b from the sidewalk 102a to the sidewalk 102a on the opposite side. The concrete base 104 embedded in the road surface 102 A total of five support columns 103 supported are formed. At the highest part on the roadway 102b, two kinds of bridge girders 106 and 107 are supported by one thick pillar 103 on the left side and one concrete base 104 as shown in FIG. 25 (b). It is supported horizontally by two thin columns 103.

  A pair of protective fences 108 are attached to these two types of bridge girders 106 and 107 along the longitudinal direction, and a staircase 105 with a straight landing for going up and down from the sidewalk 102a is on the left side. Is supported by a short pillar 103 that supports the bottom and a concrete base 104 at the left end constituting the exit of the stairs. A pair of protective fences 108 are also attached to this linear staircase 105 with landings along the longitudinal direction. Further, on the right side of the two types of bridge girders 106 and 107, a staircase 105 with a folding landing area for ascending and descending from the sidewalk 102a is a short strut 103 that supports the landing area and a concrete at the right end constituting the exit of the staircase. Supported by a base 104. A pair of protective fences 108 are also attached to the stairs 105 with a folding landing.

  Then, as shown in FIG. 25 (c), a bottom plate 109 is assembled over the bridge girder 106 over the entire length of the bridge girder 106, and a tread plate 110 also extends over the entire length of the bridge girder 106 over the bottom plate 109. It is laid down. Among these members of the pedestrian bridge 101, five columns 103, a bridge girder 106, a bridge girder 107, two types of staircases 105 with landings, a protective fence 108, a bottom plate 109 provided over the entire pedestrian bridge 101, and The foot board 110 manufactured as a CFRP molded body according to the flowchart of FIG. 9 is used.

Further, the tread board 110 is compressed and ventilated by applying a pressure of about 0.7 kgf / cm ² in step S19 of the flowchart of FIG. 9, and then graveled on the surface, and then heated to about 140 ° C. to be completely cured. Let Thus, as shown in FIG. 25 (c), by embedding gravel 111 in the surface of the tread 110 made of a CFRP molded body, unevenness is formed on the surface to make it difficult to slip, and when snow falls in winter or freezes. Even when it is done, the tread board 110 is less likely to fall.

  That is, the pedestrian bridge 101 according to the ninth embodiment is made of a CFRP molded body except for the six concrete bases 104 embedded in the road surface 102, and the weight of the portion excluding the concrete base 104 is the same as that of the conventional steel. The weight of the pedestrian bridge is about 1/4 to 1/5, and it is very easy to assemble the parts in the factory, transport them in several parts, and assemble on site. Not only that, the conventional steel pedestrian bridge often peeled off after several years and rusted from there, but the pedestrian bridge 101 of the present embodiment 8 consisting mostly of CFRP molded body, It has excellent corrosion resistance, does not rust, can be used for a long time, and has almost no change in appearance.

  The bridge girder 106 and the bridge girder 107 may be integrally formed, or may be divided into several parts and connected with bolts and nuts using a gusset plate. Similarly, the bottom plate 109 and the tread plate 110 may be formed as a single plate, or a plurality of short plates of 2 to 3 m may be formed and laid down with bolts and nuts. Also, gravel may be embedded in the landings of the staircase 105 with two types of landings, and in some cases, to prevent slipping.

  In this way, the pedestrian bridge 101 of the ninth embodiment is mainly composed of a CFRP molded body that increases the molding pressure and molding temperature in the hand lay-up method to improve the molded body strength and shorten the molding time. Combined with the advantages of the CFRP molded body, the strength is further improved, and each part can be made thinner, so that it can be further reduced in weight and therefore easier to construct. Therefore, the cost of the pedestrian bridge 101 as a whole can be reduced. Can do.

  Note that the pedestrian bridge according to the present invention is not limited to an overpass type pedestrian bridge with stairs that crosses a roadway, such as the pedestrian bridge 101 of the ninth embodiment, for example, a flat pedestrian bridge that crosses a river or the like in parallel with the roadway Is also included.

  In Embodiment 1 described above, the sluice door 1 has been described as an example of an FRP product manufactured by processing an FRP molded body, but various other FRP products can be manufactured.

Further, in the above embodiments, from about 140 ° C. The heating temperature and the pressure was about 0.7 kgf / cm ^2, room temperature to about 140 ° C. and about 0.01 kgf / cm ² to about 1.6 kgf / it may be within the range of cm ^2.

  In each of the above-described embodiments except Embodiment 1 and Embodiments 5 and 6, examples of products using CFRP (carbon fiber reinforced plastic) molded bodies as FRP molded bodies have been described. If there is no problem with the material (thickness may be increased to increase strength), HBRP (hybrid fiber reinforced plastic) or GFRP (glass fiber reinforced plastic) may be used in place of the CFRP molded product. You may use for. As a result, the cost can be further reduced.

  Further, in each of the above embodiments, an example in which an unsaturated polyester resin is used as the thermosetting resin is described. In addition, an epoxy resin, a polyvinyl ester resin, a phenol resin, a urea resin, a melamine resin, an alkyd Various thermosetting resins including resin and urethane resin can be used.

  In each of the above embodiments, an example using a glass roving cloth as a fiber has been described, but a glass chopped strand mat, a glass roving or the like can be used together or in place thereof, and is not limited to glass fiber. Carbon fibers, glass fibers and carbon fibers may be used alternately, or glass fibers and carbon fibers may be mixed and used.

  In carrying out the present invention, FRP products, FRP products for waterways, rivers, lakes and shores including corner drops or FRP parts thereof, FRP pedestrian bridges or FRP parts thereof, and FRP footboards for management bridges or pedestrian bridges The configuration, shape, quantity, material, size, connection relationship, and the like of other parts are not limited to the above embodiments, and the other steps of the FRP molded body molding method are not limited to the above embodiments.

FIG. 1 is a flowchart showing a method of forming an FRP molded body according to the first embodiment of the present invention. FIG. 2 is a front view showing a sluice door body as an FRP product manufactured by assembling the FRP molded body according to the first embodiment of the present invention. FIG. 3 (a) is a skin plate that is a part of a sluice door body that is an FRP product according to the first embodiment of the present invention, (b) is a stringer, (c) is a gusset plate that covers the stringer, d) is a perspective view of a short cross beam, and (e) is a perspective view of a long cross beam. FIG. 4A is a front view showing a method of assembling a skin plate, which is a part of a sluice door body that is an FRP product according to the first embodiment of the present invention, to another part, and FIG. 4B is a rear view. FIG. 5 (a) is a diagram showing a structure for hiding an assembly portion of a skin plate that is a part of a sluice door body that is an FRP product according to the first embodiment of the present invention, and FIG. 5 (b) is a diagram showing a hidden state. is there. FIG. 6 is a perspective view showing another example of a gusset plate that is a part of a door body of a sluice that is an FRP product according to the first embodiment of the present invention. FIG. 7: is a perspective view which shows the door stop of the sluice which is FRP product concerning Embodiment 1 of this invention with a door body. Fig.8 (a) is a front view which shows the whole structure of the FRP door body of the sluice concerning Embodiment 2 of this invention, (b) is a top view. FIG. 9 is a flowchart showing a molding method of a CFRP (carbon fiber reinforced plastic) molded body according to the third embodiment of the present invention. FIG. 10A is a front view showing the entire configuration of a manually openable and sluice gate according to Embodiment 3 of the present invention, and FIG. 10B is a side view thereof. FIG. 11: is a front view which shows the whole structure of the electrically operated opening-and-closing sluice using the door body of the sluice which consists of a CFRP molded object concerning Embodiment 4 of this invention, and a door stop. FIG. 12: is a side view which shows the whole structure of the electrically operated switching sluice and management bridge concerning Embodiment 4 of this invention. FIG. 13: is a flowchart which shows the shaping | molding method of the HBRP (hybrid fiber reinforced plastic) molded object concerning Embodiment 5 of this invention. FIG. 14 is a schematic longitudinal sectional view showing the structure of the flap gate according to the fifth embodiment of the present invention. Fig.15 (a) is the front view seen from the river side which shows the whole structure of the flap gate concerning Embodiment 5 of this invention, (b) is a longitudinal cross-sectional view. FIG. 16 is a flowchart showing a method for forming a GFRP (glass fiber reinforced plastic) molded body according to the sixth embodiment of the present invention. FIG. 17 is a flowchart showing a CFRP (carbon fiber reinforced plastic) molded body molding method according to a first modification of the sixth embodiment of the present invention. FIG. 18 is a flowchart showing a method for forming an HBRP (hybrid fiber reinforced plastic) molded body according to a second modification of the sixth embodiment of the present invention. FIG. 19 is a front view showing the configuration of the screen according to the seventh embodiment of the present invention. FIG. 20 is a longitudinal sectional view showing the overall configuration of the dust remover and its peripheral equipment according to the eighth embodiment of the present invention. FIG. 21: is a top view which shows the whole structure of the dust remover concerning Embodiment 8 of this invention. FIG. 22 is a front view showing the overall configuration of the dust remover according to the eighth embodiment of the present invention. FIG. 23 is a cross-sectional view showing details of a part of the dust remover according to the eighth embodiment of the present invention. FIG. 24 is a longitudinal sectional view showing the overall configuration of the dust remover according to the eighth embodiment of the present invention. FIG. 25A is a front view showing the overall configuration of the footbridge according to the ninth embodiment of the present invention, FIG. 25B is a plan view, and FIG. 25C is an AA upper sectional view of FIG.

Explanation of symbols

1,33,50,61,120 Sluice door (FRP product)
2,65,121 FRP skin plate for sluice doors 3a, 4a, 5a, 14, 15, 66, 67, 122 FRP girders for sluice doors 3b, 16, 68 FRP made for sluice doors Gusset plates 20, 34, 48, 64, 130 FRP door per sluice 51 Underdrain 53 Embankment 55 Management bridge 56 Management bridge girder 57 Management bridge footboard 58 Management bridge protection fence 71 FRP screen 75 Dust remover 76, 78 Dust remover screen 77 Dust remover rake 80a Belt conveyor girder 81 FRP square drop 82 Dust remover dust plate 83 Dust remover frame 84 Dust remover girder 90a Inspection stand girder 95 Dust chute 101 FRP footbridge 110 Footbridge FRP tread plate 111 Gravel 123 FRP rubber retainer plate for sluice door body 125 FRP water level adjustment for sluice door body Board G1 Garbage

Claims (20)

A method for forming an FRP molded body by a hand layup method,
The process of assembling the mold,
Applying a release agent to the inner surface of the mold;
Applying a gel coat from above the mold release agent on the inner surface of the mold;
Heating and curing the gel coat by a heating means provided under the mold;
A procedure for laminating a fiber roving cloth and / or fiber chopped strand mat and / or fiber roving on the gel coat, and a thermosetting resin containing a curing agent and a curing accelerator are added to the fiber roving cloth and / or fiber chopped strand. Repeating the procedure of applying with a coating roll from the mat and / or fiber roving until the molded body has a predetermined height;
A pressure unit having a second heating unit is installed on the upper surface of the molded body, and a pressure in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² is applied to obtain a predetermined thickness. Heating the molded body at a temperature in the range of room temperature to about 140 ° C. by the heating means and the second heating means, while removing air in the molded body;
A step of releasing the mold from the mold after the molded body has cooled,
A procedure for laminating the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving and a thermosetting resin containing a curing agent and a curing accelerator are used as the fiber roving cloth and / or fiber chopped strand mat and / or fiber. The process of repeating the procedure of applying with a coating roll from the top of the roving until the molded body reaches a predetermined height is performed once for about 1 minute to about 30 minutes, and the entire process is about 10 minutes to A method for molding an FRP molded body, which is performed for about 5 hours. The method for molding an FRP molded body according to claim 1, wherein the pressure applied to the molded body is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² .   A procedure for laminating the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving and a thermosetting resin containing a curing agent and a curing accelerator are used as the fiber roving cloth and / or fiber chopped strand mat and / or fiber. The process of repeating the procedure of applying from the top of the roving with the application roll until the molded body reaches a predetermined height is performed by repeating the process once for about 5 minutes to about 15 minutes, and for the entire process from about 30 minutes to The method for molding an FRP molded article according to claim 1 or 2, wherein the molding is performed for about 2.5 hours.   A procedure for laminating the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving, and the thermosetting resin containing the curing agent and curing accelerator are used as the fiber roving cloth and / or fiber chopped strand mat and / or fiber. Before and after the step of repeating the procedure of applying from the top of the roving until the molded body of the predetermined height is obtained, the vinylon roving cloth is laminated and the thermosetting resin containing the curing agent and the curing accelerator is added. The method for forming an FRP molded body according to any one of claims 1 to 3, wherein the applying step is performed once or several times.   5. The fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving is an aramid fiber roving cloth, an aramid fiber chopped strand mat, or an aramid fiber roving. The molding method of the FRP molded object as described in one.   An FRP product obtained by processing an FRP molded body molded by the method for molding an FRP molded body according to any one of claims 1 to 5. Assembling molds for products for waterways, rivers, lakes, coastal products, or parts that include corner drops, and applying a release agent, then applying a gel coat and heating to cure, a carbon fiber roving cloth on the gel coat And / or a carbon fiber chopped strand mat and / or a carbon fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving. Carbon fiber roving cloth and / or until it reaches a predetermined height between about 10 minutes and about 5 hours by repeatedly applying from about 1 to about 30 minutes per time Carbon fiber chopped strand mat and / or carbon fiber roving and the thermosetting resin are laminated to form a molded body. And, it being evacuated in the compact as well as to a predetermined thickness and cross-sectional shape by applying pressure in the range of about 0.01 kgf / cm ² ~ about 1.6 kgf / cm ^2, room temperature the formed body An FRP product for waterways, rivers, lakes, and coasts including a corner drop formed by heating at a temperature in a range of about 140 ° C. or a part made of the FRP. Assembling molds for products for waterways, rivers, lakes, coastal products, or parts that include corner drops, and applying a release agent, then applying a gel coat and heating to cure, a carbon fiber roving cloth on the gel coat And / or a carbon fiber chopped strand mat and / or a carbon fiber roving, and a thermosetting resin containing a curing agent and a curing accelerator is added to the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving. Coating from above, laminating a glass roving cloth and / or glass chopped strand mat and / or glass roving on the thermosetting resin, and applying the thermosetting resin to the glass roving cloth and / or glass chopped strand mat and On glass roving The carbon fiber roving cloth and / or carbon until it reaches a predetermined height within about 10 minutes to about 5 hours by repeating the application for about 1 minute to about 30 minutes per time. A fiber chopped strand mat and / or carbon fiber roving, the thermosetting resin, the glass roving cloth and / or the glass chopped strand mat and / or glass roving are laminated to form a molded body, and about 0.01 kgf / cm is formed thereon. Applying pressure in the range of ² to about 1.6 kgf / cm ² to give a predetermined thickness and cross-sectional shape and venting air in the molded body, the molded body is at a temperature in the range of room temperature to about 140 ° C. FRP products for waterways, rivers, lakes, and coasts, including corner drops, characterized by being formed by heating, or FRP parts. Assembling molds for watercourses, rivers, lakes, coastal products or parts thereof including corner drops, applying a release agent, applying a gel coat, heating and curing, carbon fiber and glass on the gel coat A hybrid fiber roving cloth made of fibers is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied from above the hybrid fiber roving cloth for about 1 minute to about 30 minutes per time. Is repeated to form a molded body by laminating the hybrid fiber roving cloth and the thermosetting resin until a predetermined height is reached within about 10 minutes to about 5 hours, and about 0.01 kgf / cm ² is formed thereon. while applying a pressure in the range of about 1.6 kgf / cm ² evacuated in the green body while a predetermined thickness and cross-sectional shape, the molded body from room temperature to about 140 ° C. Range waterways, rivers, FRP products or FRP parts made thereof for lakes and coastal including square off, characterized in that formed by heating at a temperature of. Assemble the mold of the pedestrian bridge or its parts, apply a release agent, apply a gel coat, heat and cure, and on the gel coat, carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon It is about 1 minute per one time to laminate the fiber roving and apply the thermosetting resin containing a curing agent and a curing accelerator from above the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving. The carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving until a predetermined height is obtained in a period of about 10 minutes to about 5 hours by repeating the process in about 30 minutes A laminate is formed by laminating the thermosetting resin, and about 0.01 kgf / c is formed thereon. While it deflated in the green body while the over pressure in the range of ² to about 1.6 kgf / cm ² of a predetermined thickness, heating said green body at a temperature in the range of room temperature to about 140 ° C. FRP pedestrian bridge or its FRP parts, characterized by being formed by Assemble the mold of the pedestrian bridge or its parts, apply a release agent, apply a gel coat, heat and cure, and on the gel coat, carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or carbon A fiber roving is laminated, a thermosetting resin containing a curing agent and a curing accelerator is applied on the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving, and the glass roving cloth and / or glass is applied. 1. Laminating a chopped strand mat and / or glass roving on the thermosetting resin, and applying the thermosetting resin from above the glass roving cloth and / or glass chopped strand mat and / or glass roving 1 About 1 minute per time The carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving and the heat until a predetermined height is obtained in about 10 minutes to about 5 hours by repeating the operation for 30 minutes A curable resin and the glass roving cloth and / or glass chopped strand mat and / or glass roving are laminated to form a molded body, and a pressure in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² is formed thereon. The FRP pedestrian bridge, which is formed by heating the molded body at a temperature in the range of room temperature to about 140 ° C. while removing the air in the molded body while applying a predetermined thickness by applying FRP parts. Assemble the mold of the pedestrian bridge or its parts, apply a release agent, apply a gel coat, heat and cure, laminate a hybrid fiber roving cloth made of carbon fiber and glass fiber on the gel coat, and cure About 10 minutes to about 5 hours by repeatedly applying the thermosetting resin containing an agent and a curing accelerator on the hybrid fiber roving cloth for about 1 minute to about 30 minutes per time. The hybrid fiber roving cloth and the thermosetting resin are laminated to a predetermined height therebetween to form a molded body, and a pressure in the range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² And forming the predetermined thickness by heating the molded body at a temperature ranging from room temperature to about 140 ° C. while venting air from the molded body. The FRP footbridge or the FRP parts thereof, characterized. Assemble the stepping board mold of the management bridge or the pedestrian bridge, apply the release agent, apply the gel coat, heat and cure, and on the gel coat, carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or Alternatively, carbon fiber roving is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied from above the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving. The carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber until a predetermined height is obtained within a period of about 10 minutes to about 5 hours by repeating the operation for 1 minute to about 30 minutes A roving and the thermosetting resin are laminated to form a molded body, which is about 0.01 kg. / Cm ² ~ remove the air in the green body with about 1.6 kgf / under pressure in the range of cm ² to a predetermined thickness, sprinkled gravel surface, the molded body from room temperature to about 140 ° C. An FRP tread of a management bridge or footbridge, characterized by being formed by heating at a temperature in the range of. Assemble the stepping board mold of the management bridge or the pedestrian bridge, apply the release agent, apply the gel coat, heat and cure, and on the gel coat, carbon fiber roving cloth and / or carbon fiber chopped strand mat and / or Alternatively, a carbon fiber roving is laminated, and a thermosetting resin containing a curing agent and a curing accelerator is applied from above the carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving, and the glass roving cloth and / or Alternatively, a glass chopped strand mat and / or glass roving is laminated on the thermosetting resin, and the thermosetting resin is applied from above the glass roving cloth and / or glass chopped strand mat and / or glass roving. About once The carbon fiber roving cloth and / or the carbon fiber chopped strand mat and / or the carbon fiber roving until a predetermined height is reached within a period of about 10 minutes to about 5 hours by repeating the operation for about 30 minutes to about 30 minutes And the thermosetting resin and the glass roving cloth and / or glass chopped strand mat and / or glass roving are laminated to form a molded body, and about 0.01 kgf / cm ² to about 1.6 kgf / cm ² is formed thereon. Formed by applying a pressure within a range to a predetermined thickness, removing air from the molded body, spreading gravel on the surface, and heating the molded body at a temperature ranging from room temperature to about 140 ° C. FRP footboards for management bridges or pedestrian bridges. Assemble the stepping board mold of the management bridge or pedestrian bridge, apply the release agent, apply the gel coat, heat and cure, and laminate the hybrid fiber roving cloth made of carbon fiber and glass fiber on the gel coat. About 10 minutes to about 5 minutes by repeatedly applying the thermosetting resin containing the curing agent and the curing accelerator from above the hybrid fiber roving cloth for about 1 minute to about 30 minutes. The hybrid fiber roving cloth and the thermosetting resin are laminated until a predetermined height is reached over time to form a molded body, and a range of about 0.01 kgf / cm ² to about 1.6 kgf / cm ² is formed thereon. The pressure is applied to obtain a predetermined thickness and the air in the molded body is evacuated, and gravel is applied to the surface, and the molded body is heated at a temperature in the range of room temperature to about 140 ° C. The FRP footplate management bridges or footbridges, characterized in that formed by. The pressure applied to the molded body is in the range of about 0.01 kgf / cm ² to about 0.8 kgf / cm ² , including angle drop according to any one of claims 7 to 9. The FRP product for waterways / rivers / lakes / coasts or FRP parts thereof, the FRP footbridge according to any one of claims 10 to 12, or the FRP parts thereof, or any of claims 13 to 15. FRP footboards for management bridges or pedestrian bridges.   17. The lamination is repeated for about 5 minutes to about 15 minutes per time, and the laminated body is laminated for about 30 minutes to about 2.5 hours. FRP products for waterways / rivers / lakes / coasts or their FRP parts, FRP pedestrian bridges or their FRP parts, or management bridges or pedestrian FRP footboards including the angle drop described in any one of the above.   A procedure for laminating the fiber roving cloth and / or fiber chopped strand mat and / or fiber roving, and the thermosetting resin containing the curing agent and curing accelerator are used as the fiber roving cloth and / or fiber chopped strand mat and / or fiber. Before and after the step of repeating the procedure of applying from the top of the roving until the molded body of the predetermined height is obtained, the vinylon roving cloth is laminated and the thermosetting resin containing the curing agent and the curing accelerator is added. 18. The FRP product for waterways, rivers, lakes, and coasts including a corner drop according to any one of claims 7 to 17, or the FRP component thereof, wherein the applying step is performed once or several times. , FRP footbridge or its FRP parts, or FRP footboard for management bridge or footbridge.   The fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving is a glass roving cloth, a glass chopped strand mat, or a glass roving, according to any one of claims 7 to 18. FRP products for waterways, rivers, lakes, and coasts, including FRP parts, FRP pedestrian bridges or FRP parts, or management bridges or pedestrian bridges. 19. The fiber roving cloth and / or the fiber chopped strand mat and / or the fiber roving is an aramid fiber roving cloth, an aramid fiber chopped strand mat or an aramid fiber roving. FRP products for waterways, rivers, lakes, and coasts, including FRP products or their FRP parts, FRP footbridges or FRP parts, or management bridges or footbridge FRP footboards, including the angle drop described in one.

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