CN2241167Y

CN2241167Y - Cast iron concrete manhole cover

Info

Publication number: CN2241167Y
Application number: CN 95234738
Authority: CN
Inventors: 于建国
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-25
Filing date: 1995-09-25
Publication date: 1996-11-27
Anticipated expiration: 2005-09-25

Abstract

The utility model relates to a cast iron concrete manhole cover which is mainly installed on various manholes for public works. The cast iron concrete manhole cover is improved on the basis of the prior art. The cast iron concrete manhole cover is characterized in that an anchored rib 3 is arranged on the inner wall of a manhole cover ring 2; the bottom of the inner wall is provided with a bearing stand 12, and the upper edge of the outer wall is provided with a male dent mouth 13; a mat reinforcement 5 is supported on the bearing stand 12; an anchored rib 10 is arranged under the outer wall of a manhole seat ring 6, and a female dent mouth 14 is arranged on the inner wall and is engaged with the male dent mouth 13. The utility model has the conspicuous characteristic that the traditional cast iron structure or reinforced concrete structure is broken. The utility model is an economic and ideal manhole cover at present.

Description

Cast iron concrete inspection well lid

The cast iron concrete inspection well lid that the utility model relates to, the overburden that belongs to manhole shaft or similar item mainly is installed on the well head of manhole of municipal engineering feedwater pipe well, sewage pipe well, rainwater pipe well, heating power pipe well, coal gas pipe well, electric power pipe well, communication pipe well.

Present manhole cover is easily crushed by the vehicle of heavy duty, or driven fast vehicle and hit from the well seat, well lid with lock is also not little, but stolen by the lawbreaker all the time, the human casualty accident, the traffic accident that cause therefrom constantly take place, bring tremendous loss and harm for the national wealth and the people's life security, become citizen's " trap " and " killer ".The well lid cost height of ironcasting, annual finance investment in this respect is quite big, and the well lid of the steel concrete corner that often is touched down in opening process and vehicle ' process causes stepping on the accident of turning over and takes place.

The purpose of this utility model is to overcome above-mentioned disadvantage, a kind of well lid structure that breaks traditions is provided and uses material, adopts casting iron well lid circle, well seat ring to cooperate making with steel concrete.The structure that utilization is set up anchor rib at well cover cycle, well seat ring, the pull-out capacity of well lid own and the intensity of itself have been solved, on well cover cycle an ad hoc supporting table with reinforced bar support in the above, make stressed evenly, the manhole cover that the deadweight of utilization itself just can be sealed well head.

In order to achieve the above object, the utility model improves on the basis of existing technology and realizes, it is by well lid, the well seat is formed, well lid comprises well cover cycle 2, is covered with reinforcing bar 5 in the well cover cycle 2, annular muscle 4, concrete perfusion 1 in well cover cycle 2, the well seat comprises well seat ring 6, is covered with main muscle 8, stirrup 9 under well seat ring 6 outer walls, at 6 times concrete perfusions 7 of well seat ring, be characterized in being provided with anchor rib 3 on well cover cycle 2 inwalls, the inwall bottom is provided with supporting table 12, and the outer wall upper edge is provided with the male age of a draught animal 13, steel mesh reinforcement 5 supports are on supporting table 12, well seat ring 6 outer walls below is provided with anchor rib 10, and inwall is provided with the female age of a draught animal 14, and the male age of a draught animal 13 matched with the female age of a draught animal 14.

The tangible design feature of the utility model is at well cover cycle, pre-buried anchor rib in the well seat ring, reinforcing bar on the well lid is by the supporting table rest, the anti-pressure ability and the rest power of well lid have been increased, adopt reinforcing bar evenly to lay and decomposed load that well lid carried and stability, utilize the male female age of a draught animal to cooperate lid and seat are closely cooperated, more increased the intensity of lid, make and cover the power of bearing and pass on the seat very soon, decompose by seat and the earth, adopt cast iron circle frame to combine and solved the broken problem of frame with steel concrete, not only reduced cost but also make lid increase safety, the utility model is present a kind of both economical desirable manhole cover.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

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

The explanation of accompanying drawing drawing:

1 concrete, 2 well cover cycles, 3 anchor ribs, 4 annular muscle, 5 steel mesh reinforcements, 6 well seat rings, 7 concrete, 8 main muscle, 9 stirrups, 10 anchor ribs, 11 lid holes, 12 supporting tables, the 13 male ages of a draught animal, the 14 female ages of a draught animal.

In order to understand better and to implement, it is as follows with the accompanying drawing to be that embodiment further specifies below: make a well cover cycle mould earlier, well cover cycle 2 can adopt the casting of 18# grey iron, the wide 60mm that adopts, external diameter can adopt 695mm, thick 85mm, and anchor rib 3 can adopt the I grade reinforcing steel, get Φ 10mm, long 60mm adopts 8, before well cover cycle 2 casting anchor rib 3 is imbedded upside 10mm place in the well cover cycle 2, expose 25mm, even 8 anchor ribs that distribute on the well cover cycle circumference, with well cover cycle 2 castings, anchor rib 3 prevents that concrete from producing slip, and organically well cover cycle and concrete are combined, solved slip phenomenon.Supporting table 12 on the well cover cycle is with the male age of a draught animal 13 and well cover cycle cast molding.Supporting table 12 is wide to be 25mm, thick 25mm, male wide 30mm of the ages of a draught animal 13, high 35mm, coincide with the female age of a draught animal of well seat, the high 3mm of supporting surface at the bottom of the male age of a draught animal, wide 15mm plays platform, is the effect of stable equilibrium's well lid, supporting table 12 had both played the rest steel mesh reinforcement, play the concrete effect of rest again, heavy duty is pressed in covers, uniformly to the circumference decomposing force.Steel mesh reinforcement 5 adopts the II grade reinforcing steel, gets Φ 16mm, and per two steel mesh reinforcement spacings are 110mm, adopt 8, radially moment of flexure is resisted in bidirectional crossed colligation, and annular muscle 4 adopts the I grade reinforcing steel, adopt Φ 6mm, bend to the annular ring that diameter is 450mm, in 5 times colligation moulding of steel mesh reinforcement, resist tangential moment of flexure, with after steel mesh reinforcement 5 and annular muscle 4 colligations well with steel mesh reinforcement 5 supports on supporting table 12, concrete 1 adopts 400#, is poured in the well cover cycle, cover in 11 reservations of hole rising, and maintenance is good.Well seat ring 6 adopts the casting of 18# grey iron, does a well seat ring mould earlier, and anchor rib 10 adopts the I grade reinforcing steel, get Φ 10mm, long for 120mm, adopt 8, curve " L " type, be embedded in well seat ring 6 belows, 8 anchor ribs evenly distribute on circumference, with well seat ring casting one (anchor rib 10 combines well seat ring 6 and concrete seven securely), the female age of a draught animal 14 cast molding together, the wide 25mm of tooth, thick 25mm, well seat ring top internal diameter 700mm, outer wall thickness 25mm, high 35mm.Well seat concrete seven adopts 400#.Well seat bottom is cast as one with the well seat ring and is that annular, external diameter are 950mm, wide 140mm, high 100mm, main muscle 8 adopts the I grade reinforcing steel, and Φ is 4mm, adopts 4, divides on four angles of concrete seven circumference, stirrup 9 adopts the II grade reinforcing steel, Φ 4mm, and stirrup spacing 150mm is for trapezoidal.In main muscle 8 outsides and main muscle colligation together, stressed jointly with main muscle, main muscle, stirrup are placed in the concrete well seat mould, concrete is with the cast molding of well seat ring in the pouring.Whole well lid, well seat are made and are finished.The structure of this manhole cover is suitable for using on the well head of various manholes.

Claims

1, a kind of cast iron concrete inspection well lid, be by well lid, the well seat is formed, well lid comprises well cover cycle (2), be covered with reinforcing bar (5) in the well cover cycle (2), annular muscle (4), concrete perfusion (1) in well cover cycle (2), the well seat comprises well seat ring (6), be covered with main muscle (8) under well seat ring (6) outer wall, stirrup (9), concrete perfusion (7) under well seat ring (6) is characterized in that being provided with anchor rib (3) on well cover cycle (2) inwall, the inwall bottom is provided with supporting table (12), the outer wall upper edge is provided with the male age of a draught animal (13), and steel mesh reinforcement (5) support is on supporting table (12), and well seat ring (6) outer wall below is provided with anchor rib (10), inwall is provided with the female age of a draught animal (14), and the male age of a draught animal (13) matched with the female age of a draught animal (14).

2, by the described cast iron concrete inspection well lid of claim 1, it is characterized in that anchor rib (3) is embedded on well cover cycle (2) inwall.

3,, it is characterized in that anchor rib (10) is embedded in well seat ring (6) outer wall below by the described cast iron concrete inspection well lid of claim 1.

4, by the described cast iron concrete inspection well of claim 1 lid, it is characterized in that steel mesh reinforcement (5) adopts bidirectional crossed colligation, annular muscle (4) steel mesh reinforcement (5) down colligation circularize circle, with steel mesh reinforcement (5) support on supporting table (12).

5, by claim 1,3 described cast iron concrete inspection well lids, it is characterized in that anchor rib (10) is " L " type.