CN2229472Y - Anti-theft cover for manhole - Google Patents

Abstract

The utility model relates to a theft-proof cover for a manhole. The utility model is characterized in that hinge lugs of the cover plate are arranged at the lower part within the lapped edge of the cover plate and a seat; the hinge lugs of the seat are arranged at the lower part of the inner edge of the bottom; the hinge lugs of the cover bottom and the hinge lugs of the seat are mutually connected in series and are riveted by hinge plate pins through hinge plates. Because the hinge plate is wide, the hinge plate can not be cut off with a wire cutter, multi-joint hinge plates are used for connection; the manhole cover can be fully turned over and can be flatly placed on the ground, and therefore, maintenance and management are convenient. The utility model has the advantages that the structure is simple; the cost is low; the manufacture is easy; ordinary theft-proof problems can be solved.

Description

The inner ear more piece is cut with scissors board-like anti-stealing manhole cover

The utility model is the well lid of the sand drain that is provided with of the cable adapter separated time lead-in wire place in the well lid of the cloudy well of draining in a kind of urban operating mechanism and traffic, the communications service.

Existing cloudy well, sand drain lid mostly are iron member, and well lid and base mostly are separate type, are often stolen by the people, and therefore the someone designs with general chain and tacks, and be because of it is easy to cut off with bolt clipper, still hard to guard against.If with general single-unit hinge ear connection cover and pedestal, limit because of being subjected to ground, the well lid plane earth that can not turn over fully because of its size is big, Heavy Weight, when opening such as same big lever, damages easily and cuts with scissors ear or loosening pedestal.The someone has designed various well lid pins again, and because of its complex structure, cost height, particularly trouble is only repaiied in management, can not be used widely.

At the problems referred to above, this antitheft and lid is provided especially, can reach the purpose that addresses the above problem.

The utility model primary structure content be on lid and base, be equipped be positioned at lid and base edge with below the hinge ear, by the riveted joint of hinge plate pin, and the hinge plate has certain width to two hinge ears by a plurality of joints hinge plates.Imitate with above-mentioned prior art ratio like this.Because the hinge ear below lid and seat inner edge, does not make hinged ear hole be easy to processing, owing to adopt more piece to cut with scissors plate, can make well lid open fully to fall to putting down in ground towards a direction easily, can not damage hinge ear and pedestal, again because the certain width of hinge plate.Bolt clipper is difficult to cut off, and like this, very simple structure and production technology, very low cost can satisfy general antitheft problem simultaneously.

Fig. 1 is illustrated below in conjunction with accompanying drawing:

Fig. 1 is that well lid is opened the sectional drawing when falling within ground

Among Fig. 1: 1. cover plate, 2. cover plate hinge ear, 3. cut with scissors plate, 4. cut with scissors the plate pin, 5. base, 6. base hinge ear, 7. open sign, 8. ground, 9. well.

As figure: cover plate 1. with base 5. go up respectively be provided with cover plate hinge ear 2. with base hinge ear 6., 2. cover plate hinge ear cuts with scissors ear position 6. with base, be different from the articulated manner that general hinge ear is located at the bottom edge, cover plate hinge ear 2. is located at cover plate and base overlaps the edge with interior below, 6. base hinge ear is located at the 5. below of inner edge of base, 4. 3. cover plate hinge ear riveted mutually with hinge pin by hinge plate more than two with base hinge ear and be connected, and so just forms the inner ear more piece and cut with scissors board-like well lid.7. as " haircut, open " word picture and text the width of hinge plate is more than 25MM, and the maximum number bolt clipper can not be cut off, and well lid falls within scene behind the complete opening easily, and for indicating opening direction and be different from general well lid, 1. cover plate is provided with to indicate opens sign.

Claims (3)

1. (1), a kind of by cover plate 1., cover plate hinge ear 2., the hinge plate 3., hinge plate pin 4., base 5., base hinge ear 6., the well lid formed, it is characterized in that, cover plate hinge ear position 2. is located at cover plate and base scrap (bridge) with interior below, 6. base hinge ear is located at the below of base inner edge, and 4. 3. cover plate hinge ear contacted mutually to rivet with hinge plate pin by the hinge plate with base hinge ear and be connected.
2. (2), according to the described well lid of claim one, the quantity that it is characterized in that cutting with scissors the plate polyphone is more than 2 joints.
3. (3), according to the described well lid of claim one, it is characterized in that cutting with scissors the width of plate more than 25MM.