CN201843147U

CN201843147U - Composite manhole cover

Info

Publication number: CN201843147U
Application number: CN2010202684987U
Authority: CN
Inventors: 李鼎泉
Original assignee: YANCHENG SANSHAN ROAD FACILITIES CO Ltd
Current assignee: YANCHENG SANSHAN ROAD FACILITIES CO Ltd
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2011-05-25
Anticipated expiration: 2020-07-23

Abstract

The utility model relates to various manhole covers used on the underground pipe nets of various roads and highways, particularly to a composite manhole cover. An opening hole, a locking device and a well seat locating device are arranged on the composite manhole cover. A ductile cast iron reinforcing rib is arranged in the composite manhole cover, and the ductile cast iron reinforcing rib is cast with the opening hole, the locking device and the well seat locating device in an integrating way. The composite manhole cover has the advantages of greatly reducing the cost and prolonging the service life. The loading requirements for heavy manhole covers meet national standards.

Description

A kind of combined manhole cover

Technical field:

The utility model relates to the various well lids on different kinds of roads network of underground and the highway, be specially a kind of combined manhole cover.

Background technology:

Traditional well lid mostly is casting iron well lid, its cost height, the surface fracture of easily getting rusty, again because well lid is whole cast iron formation, cast iron has the value of recycling, reproducible utilization, thereby often lose, because well lid is lost and is caused the safety that has a strong impact on vehicle and pedestrian, so that the generation of traffic and pedestrian's casualty accident is often arranged.For this reason, in recent years, adopt different composite materials to replace the research application development of cast iron manufacturing well lid very fast, preferably resolve the problem that well lid is lost, but existing composite drain cover, majority is still made skeleton with the steel of different structure, internal construction is various, and the compressive strength and the rigidity of its well lid are lower, and supporting capacity is poor, application life is short, is not durable.Chinese patent CN2423321 discloses a kind of composite polyethylene material well lid, the common name silicon plastic well lid, mainly be fixed the making of cage of reinforcement of utilizing industrial residue flyash and main composite material of waste plastics conduct and groined type, this well lid makes the trade waste comprehensive utilization, played the good social benefit, solved the problem of losing, also in to a certain degree, improve the intensity of well lid, but can only be on the sidewalk, sub-district, greenbelt uses, and do not reach above supporting capacity of existing national standard D400 and rigidity, performance indications such as aging; The well lid of groined type reinforcing rib preparation in addition, its resistance to compression, flexural strength are lower, be subjected to that the external force effect easily splits off, application life is not long, the unsaturated-resin well lid produces the supporting capacity deficiency after trying out be common phenomenon, well lid surface opens that cracky, vehicle are capable out-of-dately to be prone to knock-on and to cause the accident, draining in flood season well lid easily is flushed away, and pipe network well facility is stolen serious, becomes the road construction a great problem.

The utility model content:

The purpose of this utility model provides a kind of cost that can make and reduces, and prolong application life, and be applicable to that heavy well lid load bearing requirements reaches the combined manhole cover of national standard.

To achieve these goals, the utility model has adopted following technical scheme: a kind of combined manhole cover, combined manhole cover is provided with open hole, locking device and well seat positioner, be provided with the ductile iron reinforcing rib in the combined manhole cover, described ductile iron reinforcing rib and open hole, locking device and the cast molding of well seat positioner one;

Described open hole is that the open hole of casting two correspondences on the ductile iron reinforcing rib is inserted;

Described locking device is antirust stainless steel material, the straight-through locking device of interstitial hole of casting two correspondences on the ductile iron reinforcing rib, and it is " ' that locking device is opened mouth " number type;

Described well seat positioner is several alignment pins that become symmetry at ductile iron reinforcing rib direct casting, and cooperates with locating slot on the well seat;

The utlity model has following advantage, because the combined manhole cover of the inserts moulding that the strength bar, the quartz powder that adopt ductile iron to make well lid are major ingredient to be mixed, cost is low, the casting iron well lid that tool has replaced is renewable, utilize again, make the pilferage well lid lose the value of stealing, thereby solved the stolen problem of well lid, avoided preferably losing the accident that causes because of well lid, its social benefit is obvious.The utility model is compared with casting iron well lid, reduces material cost 15%-20%.

The utility model has adopted the sandwich layer of special construction, effectively raise the supporting capacity of well lid, supervising inspection center through national construction work detects, the trial load that supporting capacity of the present utility model meets People's Republic of China's country's GB/T23858-2009 standard and European heavy standard meets and exceeds D400KN, bending strength average 89.5MPa, compressive strength average 66.1MPa, hot strength average 64.8MPa, tensile modulus of elasticity average 8025.8MPa, the every performance indications of modulus of elasticity in static bending 4467.7MPa all surpass and require.

The well lid top layer that the utility model is made has added mill base, according to the actual needs on various constructions road surface, produces the manhole cover of different colours, is applied to fire-fighting as redness, and yellow is applied to the inspection shaft of coal gas, natural gas and caliduct; Blueness is applied to the inspection shaft of telecommunications, cable, optical cable, telephone wire, cable television; Green is applied to house property sub-district, greenbelt, rainwater sidewalk, electric power inspection shaft; Grey is applied to the sink hole on cement road, cement square; Black is applied to occasions such as asphalt tar highway inspection shaft.

Adopt particular color with on the specific well lid at present, be provided with the purposes sign of inspection shaft underground pipeline simultaneously on the well lid by national standard, have tangible warning function, make things convenient for Special Work personnel's identification; Simultaneously the well lid maximum of colored well lid and paint be not both its lovely luster, be difficult for fading, fading; Image is elegant in appearance, and easily flushing is laid in urban road and park, square, the sub-district and can beautifies the environment, decorate the street; Have simultaneously and reach the advantage more than 30 years in good resistance to compression, bending resistance, corrosion-resistant, weather-resistant, application life.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is the utility model combined manhole cover structural representation.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is the utility model ductile iron reinforcing rib structure schematic diagram.

Fig. 4 opens schematic diagram for the utility model combined manhole cover.

The specific embodiment:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4: a kind of combined manhole cover, combined manhole cover (1) is provided with open hole (3), locking device (4) and well seat positioner (5), be provided with ductile iron reinforcing rib (2) in the combined manhole cover, described ductile iron reinforcing rib (2) and open hole (3), locking device (4) and well seat positioner (5) one cast molding.

Described open hole is that the open hole (3) of casting two correspondences on black cast iron reinforcing rib (2) is inserted, and solves construction party through conventional method commonly used, and the pick sled is opened the function of the breakage of well lid.

Described locking device (4) is antirust stainless steel material, the straight-through locking device of interstitial hole of casting two correspondences on black cast iron reinforcing rib (2), it is " ' that locking device is opened mouth " number type, it mainly is the driving of antitheft, anti-vehicle, the well lid well head that bounces out, prevent the function that the water counterattack washes away well lid in flood season, and be equipped with the special opening instrument.

Described well seat positioner (5) is several alignment pins that become symmetry at black cast iron reinforcing rib (2) direct casting, and cooperates with the last locating slot of well seat (6), reaches vehicle to run and does not produce the function that well lid moves and bounces and shake.

In sum, the utility model adopts the multirow of ductile iron one cast molding to report to the leadship after accomplishing a task and arranges the enhancement Layer that the criss-cross strength bar that has support is made well lid, and that its ductile iron is selected for use is shock-resistant, resistance to compression is anti-tears open and anti-wear performance is high and moderate ferrite QT450-12 or pearlite QT500-7; It is stand-by that polystyrene, styrene stir into liquid earlier, with polyurethane 13%, polystyrene, styrene is mixture 28%, dispersible pigment color paste 1.5%, zinc stearate 3%, calcium hydride 1.5%, uncle's fourth fat 0.6% are poured the nothing that kneader adds 40% quartz powder and 12.4% again into and are become the glass silk of 2-3 centimetre length essence and above-mentioned chemical industry batching to enter kneader simultaneously, be kneaded into Bulk Molding Compound and ductile iron enhancing arrangement of reinforcement spare and enter 135-140 ℃ of hydraulic die high temperature, generally curing molding in 15 minutes finally is prepared into the intensified multifunction combined manhole cover.

Claims

1. combined manhole cover, combined manhole cover is provided with open hole, locking device and well seat positioner, be provided with the ductile iron reinforcing rib in the combined manhole cover, it is characterized in that, ductile iron reinforcing rib and open hole, locking device and the cast molding of well seat positioner one.

2. a kind of combined manhole cover according to claim 1 is characterized in that, open hole is that the open hole of casting two correspondences on the ductile iron reinforcing rib is inserted.

3. a kind of combined manhole cover according to claim 1 is characterized in that, locking device is antirust stainless steel material, the straight-through locking device of interstitial hole of casting two correspondences on the ductile iron reinforcing rib, and it is " ' that locking device is opened mouth " number type.

4. a kind of combined manhole cover according to claim 1 is characterized in that, described well seat positioner is several alignment pins that become symmetry at ductile iron reinforcing rib direct casting, and cooperates with locating slot on the well seat.