CN2293596Y - Composite material base and cover for manhole - Google Patents

Abstract

The utility model relates to a composite material base and a cover for a manhole, belonging to the technical field of the building. The utility model solves the existing problems of a manhole base and a manhole cover of the exiting cast iron water pipe and sewer manhole covers, such as easy to lose, malignant accident of fatal vehicle accident because of breaking, low carrying capacity, energy source and pig iron consumption, high cost, big equipment investment, complex production process, etc. The utility model has the technical proposal that the composite material base and the cover for the manhole are made of composite material, and are composed of a surface layer and bearing layer. The surface of the manhole base is provided with a steel wire, and the bearing layer is provided with a wire frame of the reinforced bars. The surface layer of the manhole cover is provided with a wire mesh, the bearing layer is provided with a round reinforced mesh, the cast forming is conducted by a steel mould. The composite material base and the cover for the manhole are suitable for water pipe and sewer manholes, a cable manhole, a communication inspection manhole and a gas inspection manhole.

Description

Composite well seat, well lid

The utility model belongs to the building science technical field.

In the at present domestic urban construction, well seat, well lid for the inspection shaft of water up and down of urban road extensively adopt the cast iron manufacturing, the price of this product is more expensive, and often go out active well lid and cataclasm, cause serious accidents such as car crash and bob people to take place, cause extremely bad influence socially.People are seeking a kind of material that can replace casting iron well lid, well seat for a long time, there is the human glass-reinforced plastic material to make well lid for the previous period, but this kind material is also expensive, and this chemical material has weakness such as easily aging, easy crisp, displacement in light weight in addition, easy, dangerous, do not satisfy the urban road up and down well lid, the mechanical property requirements that the well seat need carry of water inspection shaft, so extensively do not adopted by engineering construction.And for example ordinary concrete well lid, well seat are heavy, and mechanical property also can not satisfy instructions for use and is eliminated.

The purpose of the utility model design, well seat, well lid in view of the inspection shaft of water up and down of the present urban road of China is adopted have a lot of drawbacks, as not satisfying the requirement of large-scale truck to urban road, the carrying poor mechanical property; Price is more expensive; Well lid is easily lost, the uneasy congruence that easily has an accident, and ad hoc meter is developed this product, in order to urban construction, beautifying urban environment.

The utility model composite well seat, well lid, by well seat (1), well lid (2) is formed, well seat (1) is made into L shaped hollow ring, in L type hollow ring, place circular protruding formula well lid (2), its well seat and well lid constitute by two-layer composite material, this two-layer top one deck is the top layer, following one deck is a bearing course, the top layer of well seat is by iron oxide black pigment, cementitious materials, add water and form composite material (7), put circular steel silk screen (5), bearing course is by steel fibre, cementitious materials, high-strength aggregate, special fine powder, high efficiency water reducing agent, add water, form composite material (8) through mix, add L type steel hoop rack (6), use the steel mould moulding by casting, and the top layer of lid is by iron oxide black pigment, cementitious materials, add water and form composite material (7), put circular steel mesh reinforcement (10), bearing course is by steel fibre, cementitious materials, high-strength aggregate, special fine powder, high efficiency water reducing agent, add water and form composite material (8) through mix, put into steel hoop net (9), use the steel mould moulding by casting, composite material (7) is pressed following composition of proportions: cementitious material: iron oxide black pigment: water=1: 0.2: 0.3, composite material (8) is pressed following composition of proportions: cementitious materials and special fine powder: aggregate: high efficiency water reducing agent: water: steel fibre=1: (3.32～3.38): (0.02～0.022): (0.17～0.22): (0.25～0.35), this product well seat, well lid can be made into (circular diameter * height in outside diameter * manhole) according to the needs of urban construction, use on the heavy track: 1000 * 800 * 120, 900 * 700 * 115, 800 * 600 * 110, use on the light-duty sidewalk: 1000 * 800 * 100, 900 * 700 * 95, specification products such as 800 * 600 * 90.

This product material therefor: cementitious material is high-strength cement or spherical cement, and aggregate is flower rock and limestone, and granularity is 0.5～10 millimeter, and the iron oxide black is a kind of pigment, and high efficiency water reducing agent is commercially available industrial chemicals, and special fine powder is silica flour and fine coal ashes.

Advantage that the utility model compared with prior art has and effect:

1. good mechanical property is arranged, can satisfy the requirement of 15 tons of trucies;

2. cost is low, than cast iron, glass fiber reinforced plastic well seat, well lid facility 1/5～2/5;

3. making, easy for installation;

4. can not lose (well seat, the well lid finished product made by composite material do not have recovery value), safety is good;

5. be useful for highway road, sidewalk water inspection shaft up and down, cable, communication inspection-pit, natural gas manhole;

6. this product is not made and can be worn out with inorganic material, have durable in use, intensity is high, safe and reliable, urban construction and urban environmental protection are had great economic benefit, social benefit and environmental benefit.

Description of drawings

Fig. 1. composite well seat, manhole lid device figure (the A-A sectional view of Fig. 2)

Fig. 2. composite well seat, well lid vertical view

Fig. 3. well seat part drawing (sectional view)

Fig. 4. well lid part drawing (sectional view)

Sequence number among the figure: (1) well seat, (2) well lid, (3) composite layer, (4) composite material bearing course, (5) circular steel silk screen, (6) L shaped bar frame, (7) skin layer composite material, (8) bearing course composite material, (9) pot bottom type steel hoop net, (10) circular steel mesh reinforcement.

Embodiment:

1. determine the external diameter of mould according to the size dimension design of all kinds of inspection shafts, and design and produce the mould of all kinds of specifications as required, so that well seat, the well lid of the inspection shaft of all kinds of specifications are made in factorial construction.

Well seat mould make the external hollow annulus and L shaped in 1 pair on hollow ring mould, be inverted on the ground surface platform.

3. the making of well seat, skin layer composite material is pressed: cementitious material: the iron oxide black: water=preparation in 1: 0.2: 0.3, drop in the mould, put into gauze wire cloth, press again: aggregate: high efficiency water reducing agent: water: steel fibre=1: 3.35: 0.021: 0.18: 0.25 preparation bearing course composite material, drop in the mould through mix, and adding L type steel hoop rack, through tamping, floating, the demoulding in a day brushes curing agent, gets product after 28 days.

4. the making of well lid, the size of well lid, external diameter cooperates according to instructions for use and with the internal diameter of well seat, mould is made up of circular cover and pot bottom type base plate two parts, the pot bottom type base plate is placed on the ground surface platform, press: (cementitious materials and special fine powder): aggregate: high efficiency water reducing agent: water: steel fibre=1: 3.35: 0.021: 0.18: 0.25 preparation load-bearing composite material, drop in the mould through mix, add circular steel mesh reinforcement, and tamping, press again: cementitious material: the iron oxide black: water=1: 0.2: 0.3 preparation skin layer composite material, drop in the mould, and put into gauze wire cloth, with the pressing of mould circular cover, the demoulding in one day brushes curing agent, gets product after 28 days.

6. make mark as needing, can on the mould of circular cover, scribe into punch on request.

All entity and individual that have a mind to produce can be provided the assembling drawing and the part drawing of the making drawing of a complete set of mould and well seat, well lid by the associate professor Yan Zhiren of management engineering institute of Chongqing Univ. of Architecture; If only need composite well seat, well lid, also can guarantee the quality provides product as required.

Claims (4)

1. composite well seat, well lid, by well seat (1), well lid (2) is formed, it is characterized in that well seat (1) is made into L shaped hollow ring, in L type hollow ring, place circular protruding formula well lid (2), its well seat and well lid constitute by two-layer composite material, this two-layer top one deck is the top layer, following one deck is a bearing course, the top layer of well seat is by iron oxide black pigment, cementitious materials, add water and form composite material (7), put into circular steel silk screen (5) again, bearing course is by steel fibre, cementitious materials, high-strength aggregate, special fine powder, high efficiency water reducing agent and water, form composite material (8) through mix, add L shaped steel muscle rack (6), use the steel mould moulding by casting, the top layer of well lid is by iron oxide black pigment, cementitious materials and water are formed composite material (7), put into circular steel mesh reinforcement (10) again, bearing course is by steel fibre, cementitious materials, high-strength aggregate, special fine powder, high efficiency water reducing agent and water are formed composite material (8), put into pot bottom type steel hoop net (9), use the steel mould moulding by casting.

2. composite well seat as claimed in claim 1, well lid is characterized in that composite material (7) is by following composition of proportions, cementitious materials: iron oxide black: water=1: 0.2: 0.3.

3. composite well seat as claimed in claim 1, well lid, it is characterized in that composite material (8) is by following composition of proportions, cementitious materials and special fine powder: aggregate: high efficiency water reducing agent: water: steel fibre=1: (3.32～3.38): (0.02～0.022): (0.17～0.22): (0.25～0.35).

4. composite well seat as claimed in claim 1, well lid is characterized in that well seat, well lid are made into specification products such as 1000 * 800 * 120, 900 * 700 * 115, 800 * 600 * 110, 1000 * 800 * 100, 900 * 700 * 95, 800 * 600 * 90.

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