CN2551683Y

CN2551683Y - Safety manhole cover

Info

Publication number: CN2551683Y
Application number: CN 02235785
Authority: CN
Inventors: 董满林
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-20
Filing date: 2002-05-20
Publication date: 2003-05-21
Anticipated expiration: 2012-05-20

Abstract

The utility model discloses a safety pit cover, which is designed for solving the problems that the prior pit cover has large size and is prone to be worn out, turned over and stolen. The safety pit cover comprises a cover body, a base body, and a non-standard bolt. The cover body can be connected with the base body by the non-standard bolt which can be a triangle bolt, a pentagonal bolt or a heptagonal blot. The top of the cover body is provided with grooves, and lug bosses formed by the grooves are connected with each other. Strengthening ribs are arranged at the bottom of the cover body. The utility model has the advantages of good wear-resistance and corrosion, long service life, light weight, small size, simple structure and anti-theft performance.

Description

Safety well cover

Technical field:

The utility model relates to a kind of well lid, particularly a kind of Safety well cover.

Background technology:

At present, be installed in the various well lids on the road surface, in order to increase well lid intensity, prolong well lid application life, mostly adopt the method that increases well lid thickness, this method causes well lid weight to increase, and volume increases, put to no little inconvenience for carrying, the dismounting of well lid, and waste material, cost increased.Also have a class well lid,, between the lid of well lid and pedestal, have additional the anti-theft device of various ways,, lock member structure etc. as fixing rod-type for safe antitheft.The anti-theft device of setting up causes the well lid complex structure, and complex manufacturing is produced cost up in batches.

Summary of the invention:

The purpose of this utility model is to provide a kind of Safety well cover, and this well lid thickness is significantly less than the common well lid of same model, and is in light weight, the intensity height; Its abrasion resistance and application life all improve greatly; And can effectively realize antitheft.

For achieving the above object, the utility model adopts following technical scheme: the utility model Safety well cover, comprise lid and pedestal, and connect by non-standard bolt between lid and the pedestal, have groove on the lid end face, its edge thicker part also has a circle groove; The lid bottom surface is provided with reinforcing rib.

Technique scheme can also further realize in the following manner:

The lid of the utility model Safety well cover and pedestal all adopt the high strength ductile iron material, have improved the intensity of well lid greatly, abrasion resistance, corrosion resistance.

In order to alleviate well lid weight, save material under the condition that does not reduce intensity, the bossing that the groove of being opened on the lid end face forms on the lid end face interconnects.Institute's recessing can be arbitrary shapes such as circle, rectangle, regular hexagon.The lid bottom surface is provided with reinforcing rib.Also have air vent and lifting eye on the lid.Air vent can be furnished with stopper, and in special use occasion, this stopper can play the deodorization effect, eliminates the pollution to environment.

Non-standard bolt adopts triangle, five jiaos, heptangle bolt usually, has only special tool just can open well lid, can effectively play antitheft effect.And simplified the well lid structure greatly.

Compared with the prior art, the advantage of the utility model Safety well cover is: in light weight, owing to adopt the high strength ductile iron material, and the groove of being opened on the lid, this Safety well cover can be than the common well lid weight saving about 50% of same model, and intensity can not reduce.In addition, the well lid abrasion resistance strengthens greatly, and the life-span is improved 6-10 doubly than common well lid.The corrosion proof raising of well lid can make its epidermis difficult drop-off, has improved operator's operating environment.Adopt non-standard bolt to realize safe antitheft between lid and the pedestal, can make the simple in structure of the utility model Safety well cover, easy to operate.

Description of drawings:

Fig. 1 is the upward view of the utility model Safety well cover;

Fig. 2 is the A-A sectional view of the utility model Safety well cover Fig. 1;

Fig. 3 is the vertical view of the utility model Safety well cover.The number in the figure explanation:

1-lid 2-pedestal 3-stainless steel five corner bolts

4-reinforcing rib 5-lifting eye 6-air vent

7-regular hexagon groove 8-groove

The specific embodiment:

As Fig. 1, Fig. 2, shown in Figure 3, the utility model Safety well cover comprises lid 1, pedestal 2, stainless steel five corner bolts 3.Lid 1 is connected by stainless steel five corner bolts 3 with pedestal 2.Have a plurality of regularly arranged regular hexagon grooves 1 on the end face of lid 1, well lid edge has a circle groove 8, and institute's recessing interconnects at the bossing that the lid end face forms, successively.It is the reinforcing rib 4 of symmetry that the bottom surface of lid 1 is provided with the lid center.Also have air vent 6 and lifting eye 5 on the lid 1.Air vent 6 is furnished with rubber stopper, uses the effect that can play deodorization at special application occasion, avoids contaminated environment.

Owing to adopt stainless steel five corner bolts 3, have only with special tool and just can open well lid, can play the safe antitheft effect.

Claims

1, a kind of Safety well cover comprises lid and pedestal, it is characterized in that: connect by non-standard bolt between lid and the pedestal, have groove on the lid end face, its edge thicker part also has a circle groove; The lid bottom surface is provided with reinforcing rib.

2, Safety well cover according to claim 1, its feature also is: the bossing that institute's recessing forms on lid interconnects.

3, Safety well cover according to claim 1, its feature also is: lid and pedestal adopt the high strength ductile iron material to make.

4, Safety well cover according to claim 1, its feature also is: have air vent, lifting eye on the lid.Air vent can be furnished with stopper.

5, Safety well cover according to claim 1, its feature also is: described non-standard bolt is triangle, five jiaos, heptangle bolt.