CN2241166Y

CN2241166Y - Safety manhole cover

Info

Publication number: CN2241166Y
Application number: CN 95233592
Authority: CN
Inventors: 高勤乐
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-07
Filing date: 1995-04-07
Publication date: 1996-11-27
Anticipated expiration: 2005-04-07

Abstract

The utility model relates to a safe manhole cover, belonging to the manhole cover for public projects. The utility model breaks the structure and the materials of a traditional manhole cover, and an original cast iron structure is changed into a reinforced concrete structure. The utility model is characterized in that a steel bar 4 is arranged in the manhole cover 1 and is in an arch net shape, and a paraboloid arch is arranged below the manhole cover 1. Three bearing salient points 2 are arranged on the circumference of the lower side of the manhole cover 1, and the steel bar 12 is arranged in a manhole seat 5. Concave points 10 meshed with the bearing salient points 2 on the manhole cover 1 are arranged above the manhole seat 5. The utility model adopts the paraboloid arch, three salient points and three concave points, so the load and the stability which are borne by the manhole cover are disassembled, and the utility model is an economical ideal safety manhole cover at present.

Description

Safety well cover

The Safety well cover that the utility model relates to belongs to the overburden of 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 personal injury or 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 ".And these well lids are ironcasting, the cost height, and annual finance is invested quite big in this respect.

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, utilize parabolic domes and 3 theories that become a plane, employing steel concrete is made, the deadweight of utilization itself just can be sealed well head, and only with covering the Safety well cover that car just can work out well lid together.

In order to achieve the above object, the utility model is to realize like this, it is to change reinforced concrete structure into by original cast iron structure, it is by the well lid 1 of concrete material 7 for the main body cast, concrete material 11 constitutes for the well seat 5 of main body cast, be characterized in being provided with in the well lid 1 reinforcing bar 4, reinforcing bar 4 is that arch is netted, below the well lid 1 is parabolic arch, evenly be provided with three on the circumference below the well lid 1 and put forth effort salient point 2, be provided with reinforcing bar 12 in the well seat 5, be provided with above the well seat 5 with well lid 1 and put forth effort the concave point 10 that salient point 2 matches,, putting forth effort to be provided with elastic mat 3 between salient point 2 and the concave point 10 for shock-proof and anti-collision.

The tangible design feature of the utility model is that well lid has adopted parabolic arch, reinforcing bar also also is parabolic arch, increase the anti-pressure ability of well lid, adopted three convex-concave points to decompose load that well lid carried and stability, and increased the impact strength of well lid and well seat.The utility model adopts reinforced concrete structure, has reduced cost, can load-bearing safety again, can not stolen, utilize deadweight just lid mouthful can be sealed, be present a kind of both economical desirable Safety well cover.

Description of drawings:

Fig. 1 is the well lid structural representation;

Fig. 2 is a well holder structure schematic diagram;

Fig. 3 is the lateral view of Fig. 1;

Fig. 4 is the lateral view of Fig. 2;

Fig. 5 is reinforcing bar 4 structure schematic top plan view;

Fig. 6 is the lateral view of Fig. 5;

Fig. 7 covers car 9 construction schematic diagrames.

The explanation of accompanying drawing drawing:

1 well lid; 2 salient points; 3 elastic mats; 4 reinforcing bars; 5 well seats; 6 wells; 7 concrete materials; 8 lid eyes; 9 lid cars; 10 concave points; 11 concrete materials; 12 reinforcing bars.

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 lid mould earlier, well lid 1 is cast in reinforcing bar 4 by concrete material 7, reinforcing bar 4 can adopt the steel of Ф 6mm, and it is netted with thin wire reinforcing bar 4 to be overarched, and is provided with two and plays lid eye 8 on well lid, overarch below, and evenly establish three on the circumference below and put forth effort salient point 2, when well lid solidify good after, turn over mould well lid got final product from mould.Well seat 5 is made a mould earlier, be square, the well lid part is removed in the centre, the diameter of well 6 just, reinforcing bar 12 adopts many to be tied to form netted around well seat mould with thin wire, concrete material 11 in the cast, be provided with three concave points 10 above the well seat 5, put forth effort salient point 2 with three of well lid 1 and match, after the well seat solidifies, turning over mould pours out, cover car well lid and well seat are installed on the well 6 with rising,, to fill up elastic mat 3 between well lid and three convex-concave points of well seat in order to prevent bump, keep in repair with rising and cover car 9 and well lid 1 is removed as arriving the down-hole, just can descend well servicing by playing lid eye 8.

Claims

1, a kind of Safety well cover, it is to be made of for the well seat (5) of main body cast well lid (1), the concrete material (11) of concrete material (7) for the main body cast, it is characterized in that being provided with in the well lid (1) reinforcing bar (4), reinforcing bar (4) is that arch is netted, below the well lid (1) is parabolic arch, evenly be provided with three on the circumference below the well lid (1) and put forth effort salient point (2), be provided with reinforcing bar (12) in the well seat (5), be provided with above the well seat (5) with well lid (1) and put forth effort the concave point (10) that salient point (2) matches.

2, by the described Safety well cover of claim 1, it is characterized in that putting forth effort being provided with elastic mat (3) between salient point (2) and the concave point (10).