CN1087151A

CN1087151A - A kind of new-type well lid

Info

Publication number: CN1087151A
Application number: CN 93107548
Authority: CN
Inventors: 王雄伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-26
Filing date: 1993-06-26
Publication date: 1994-05-25

Abstract

The invention discloses a kind of MULTILAYER COMPOSITE well lid of glass-reinforced plastic material, promptly by including surface and basic unit, the glass fiber reinforced plastic composite bed that accompanies one deck enhancement Layer in the middle of the basic unit is made well lid integral body.Owing to adopted multi-form glass fiber multi-layer compound structure, use glass fiber reinforced plastic replacement cast iron to manufacture well lid and become possibility, and every performance indications can reach standard-required, fundamentally solve the problem that well lid is sold scrap iron of stealing, avoided the traffic and the personnel's accident that cause because of the robbed or burgled problem of well lid to greatest extent, reduce social economy's loss, and saved the cast iron resource.

Description

A kind of new-type well lid

The present invention relates to a kind of accessory of manhole shaft, specifically a kind of overburden of manhole shaft.

All kinds of well head overburdens such as the highway well lid that uses, sidewalk well lid all are cylinder iron to make at present, have certain intensity, impact resistance, resistance to ag(e)ing and weight to ensure it.But because the lawless person has assigned this casting iron well lid as the target of stealing for obtaining unlawful interests, cause a large amount of well heads not have overburden, had a strong impact on vehicular traffic and pedestrian's safety.For this reason, all kinds of anti-stealing manhole cover designs emerge in an endless stream.Overweight and install theftproof lock or warning device etc. additional and these anti theft design all are plans, and not from well lid with solution basic in addition on the material, so people still can manage well lid is stolen.

Purpose of the present invention just provides a kind of well lid made from the non-steel material, fundamentally to solve well lid robbed or burgled problem, support vehicles and personal security.

The present invention is achieved in that the glass-reinforced plastic material making well lid of selecting for use mechanical performance to approach cast iron, because of its performance with similar iron and steel belongs to nonmetallic synthesis of organic substance matter, so after use, owing to can not sell off as scrap iron and steel, thereby stolen possibility stopped at all.For the various performances that make glass fibre reinforced plastic manhole covers reach the obducent standard-required of well head,, realized the new-type well lid of making by the glass fiber reinforced plastic composite bed through design experiment in many ways.

This glass fiber reinforced plastic composite bed well lid includes top layer and basic unit, and the top layer is in order to improve the shock resistance and the anti-wear performance of well lid, and basic unit is in order to ensure the intensity and the weight of well lid.But experiment shows that simple basic unit is difficult to reach the standard-required of well lid intensity, accompanies enhancement Layer in the middle of basic unit for this reason, has solved strength problem thus.

The well lid top layer is made for the parian frp layer, and it has, and rigidity is strong, abrasion resistance and the good characteristic of self-extinguishment, is suitable for collision, friction condition on the road.Parian glass fiber reinforced plastic top layer is to use the gel coating resin of being made by gel coat, curing compound, accelerator and quartz powder to make specifically.The concrete method for making of relevant gel coating resin can be consulted in various glass fiber reinforced plastic books, and wherein gel coat can be selected gel coat 33PA, 35PA, 36PA, various models such as 39 and 40 for use.

Well lid basic unit may be made in by unsaturated polyester resin and sticks with paste alternate bonding multilayer structure with glass fabric.Be major ingredient with the unsaturated polyester resin exactly specifically, be equipped with crosslinking agent, curing compound, accelerator and filler, forming unsaturated polyester resin sticks with paste, the well lid top layer inner face brushing one deck that is making, repave the last layer glass fabric, brush second layer resin paste again after treating fully to soak into, shop second layer glass fabric is successively to arriving design thickness.For guaranteeing that unsaturated polyester resin is stuck with paste and the strong bond of glass fabric, in resin paste, preferably add a kind of surface conditioning agent.About glass fiber reinforced plastic basic unit select materials and the interpolation using method of method for making and surface conditioning agent all has introduction in " frp process " book.

Simple top layer adds the glass fibre reinforced plastic manhole covers of base layer structure, and its intensity still is weak, and an enhancement Layer also will be set, and to improve the bulk strength of well lid, makes it to reach existing standard code.The setting of enhancement Layer, the most suitable in the centre of basic unit, promptly when manufacturing basic unit, when reaching a half thickness, add enhancement Layer, and then continue manufacturing of half basic unit of back.Basic unit just has been divided into last basic unit and the two parts of going to a grassroots level like this.Enhancement Layer in the middle of the well lid basic unit can be frp honeycomb sandwich, and the making of its individual layer can be with reference to the method on " frp process " book.

Key of the present invention is after the multi-form glass fiber compound material structure of the compound multilayer of design, the every performance indications of well lid that glass fiber reinforced plastic replacement cast iron materials is manufactured reach and have satisfied the obducent standard-required of relevant well head, make this replacement become possibility, thereby eliminated the purpose of stealing well lid, avoid the traffic and the personnel's accident that cause because of the well lid problem to greatest extent, reduced social economy's loss.And can save a large amount of cast iron resources, go in the place that makes it to can be used for more being badly in need of.This glass fiber reinforced plastic composite multi-layer structure is to be combined into one by mylar, and therefore the characteristic complementation of each layer after the physical and mechanical properties index of comprehensive each layer structure, has realized the overall performance index of this well lid.Wherein first floor is the parian top layer of gel coating resin, because its rigidity is strong, thereby has increased well lid and extraneous abrasion resistance and the resistance to impact that contacts, so be the topping of well lid.Manufacture in the process on the top layer, if add the painted paste-polyester mill base of 1-2% weight, can mix the well lid of various different surfaces colors, can set the well lid color of all kinds of manhole shafts like this, thereby after use, can judge the type of lower well quickly and easily by the color of well lid.Second and the 4th layer of well lid promptly gone up basic unit and gone to a grassroots level is the strong bond body of glass cloth and mylar, is the main agent of well lid bulk strength.Well lid is the enhancement Layer of frp honeycomb sandwich for the 3rd layer, because honeycomb style has the characteristics of good stability, so supporting capacity is improved, endurance, anti-vibration, thereby improved the structural stability and the supporting capacity of well lid integral body, and improved the durability of the every physical and mechanical properties of well lid.

Fig. 1 is a cross-section cutaway view of the present invention.

Below in conjunction with description of drawings embodiment.

Embodiment: glass fibre reinforced plastic manhole covers is composited by four-layer structure.Among Fig. 1,1 is the top layer, and 2 is last basic unit, and 3 is enhancement Layer, and 4 for going to a grassroots level.

Top layer 1 is the gel coating resin of parian, is example with gel coat 33PA, gets gel coat 33(weight portion, down with) 100 parts, cyclohexanone peroxide is stuck with paste 4 parts, styrene solution 2-4 part of cobalt salt, polyester mill base 1-2 part, 15 parts of quartz powders.The top layer that each raw material is made the 0.4-2 millimeters thick after mixing according to existing technology.This structure is the parian glass fibre reinforced plastic structure of gel coating resin.

Last basic unit 2 is processed on the basis on top layer 1, at first manufacturing unsaturated polyester resin sticks with paste, 100 parts of desirable unsaturated polyester resins, styrene solution 20-50 part, naphthoic acid cobalt 2-4 part, methyl ethyl ketone peroxide (perhaps cycloethanone peroxide) 2-4 part, 40 parts of quartz powders (or metal powder) are mixed and made into mylar and stick with paste.Brush one deck resin paste on gel coating resin top layer 1, the shop layer of glass fiber fabric is brushed, spreads the second layer, the 3rd layer again after fully soaking into ... it is whole that upward groundwork thickness can be at the 4-8 millimeter.

Enhancement Layer 3 is a cellular sandwich, and moulding in advance is the regular hexagon honeycomb structure, and the length of side in each regular hexagon hole is between the 3-6 millimeter, and this layer thickness is the 4-10 millimeter, crosses the thin blocked up bulk strength that all can influence well lid., brush one deck mylar again and stick with paste when uncured in last basic unit 2, together enhancement Layer 3 and last base adhesive.

Go to a grassroots level at last 4 making, its moulding of selecting materials is identical with the mode of last basic unit 2, just construction on enhancement Layer 3.This layer thickness is also within 4-8 millimeter scope.

Claims

1, a kind of new-type well lid is characterized in that well lid made by the glass fiber reinforced plastic composite bed.

2, new-type well lid according to claim 1 is characterized in that composite bed includes top layer and basic unit, accompanies enhancement Layer in the middle of basic unit.

3, new-type well lid according to claim 2 is characterized in that the well lid top layer is the parian frp layer.

4, new-type well lid according to claim 3 is characterized in that parian glass fiber reinforced plastic top layer is to use the gel coating resin of being made by gel coat, curing compound, accelerator and quartz powder to make.

5, new-type well lid according to claim 2 is characterized in that well lid basic unit is that unsaturated polyester resin is stuck with paste alternate bonding multilayer structure with glass fabric.

6, new-type well lid according to claim 2, the length of side in each regular hexagon hole that it is characterized in that honeycomb sandwich construction is between the 3-6 millimeter, and this layer thickness is the 4-10 millimeter.