CN2136855Y

CN2136855Y - Theft-proof cover with double lock for manhole

Info

Publication number: CN2136855Y
Application number: CN 92238366
Authority: CN
Inventors: 焦应龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-22
Filing date: 1992-10-22
Publication date: 1993-06-23
Anticipated expiration: 2002-10-22

Abstract

The utility model discloses a theft-proof well cover with a double-lock head. A well edge is provided with a well frame with a clamping slot, and the bottom surface of a well cover is provided with a clamping block and a double-lock head. A lock hole is arranged one edge of the well frame, and the well frame is prefabricated at the well edge. The utility model has the advantages of simple structure and convenient repair and use, and is an ideal substitute for the existing well cover.

Description

Theft-proof cover with double lock for manhole

The utility model belongs to the aboveground well lid of plumbing, relates in particular to a kind of twin-lock head anti-stealing manhole cover.

At present, the aboveground well lid of most of plumbing is that nature is placed on the crib, and no burglar-proof mechanism is stolen down to the well lid in many places, causes passerby's well accident that falls constantly to take place; Some is local stolen for preventing well lid, just well lid is given built in together with cement with crib, though can play certain antitheft effect like this, during the maintenance well, removes well lid, and difficulty and difficulty are all bigger, and be very inconvenient when causing the maintenance well.

The purpose of this utility model provide a kind of both can be antitheft, the twin-lock head anti-stealing manhole cover of opening well lid that again can be more or less freely.

To achieve these goals, the utility model is to be fixed with a crib ［ 1 ］ with cement around the well limit, well lid ［ 2 ］ is arranged on the crib ［ 1 ］, be provided with a fixture block ［ 8 ］ that is stuck in the crib ［ 1 ］ in the bottom surface of well lid ［ 2 ］, the twin-lock head unit is connected together by five connecting blocks ［ 12,13,14,15,16 ］ the same well lids ［ 2 ］ that are located on well lid ［ 2 ］ bottom surface.Lockhole is located at the side of crib ［ 1 ］, when giving system cement, it is sealed, and just is not easy so outside to find lockhole wherein, during the maintenance well, as long as the maintenance personal destroys the cement at lockhole place.Just its well lid can be opened with special key ［ 7 ］.

Accompanying drawing 1 is a structural representation of the present utility model.

The sectional view that accompanying drawing 2 is cut open from " B-B " for the utility model.

Now in conjunction with the accompanying drawings embodiment of the present utility model is further described:

Cause a crib ［ 1 ］ that has draw-in groove with cast iron casting, crib ［ 1 ］ is given on the well limit with cement, when casting well lid ［ 2 ］, end casting fixture block ［ 8 ］ in its bottom surface, five connecting blocks ［ 12 of other end casting, 13,14,15,16 ］, these five connecting blocks are on the straight line, lock core ［ 9 ］ is contained on the central link piece ［ 16 ］, and can rotate thereon, tapered end ［ 4 ］ is contained in connecting block ［ 12,13 ］ on, tapered end ［ 3 ］ is contained in connecting block ［ 14,15 ］ on, spring ［ 6,5 ］ be contained in tapered end ［ 3 respectively, 4 ］ on, connecting block ［ 12 ］ and ［ 13 ］, ［ 14 ］ and between ［ 15 ］, an end of spring ［ 6 ］ withstands connecting block ［ 13 ］, and the other end withstands the baffle ring on the tapered end ［ 4 ］; One end of same spring ［ 5 ］ withstands connecting block ［ 14 ］, and the other end withstands the baffle ring on the tapered end ［ 3 ］.Two tapered ends ［ 3,4 ］ and lock core ［ 9 ］ are connected together by steel cable ［ 10,11 ］ respectively, and the key ［ 7 ］ of making " L " type inserts lock core ［ 9 ］ from lockhole, and key ［ 7 ］ just can be opened well lid ［ 2 ］.

The utlity model has simple in structurely, the advantage that theftproof performance is good is that nature is placed the comparatively desirable substitute products of well lid.

Claims

1, a kind of twin-lock head anti-stealing manhole cover, it is characterized in that being fixed with a crib [1] with cement on the well limit, well lid [2] is arranged on the crib [1], be provided with a fixture block [8] that is stuck in the crib [1] in the bottom surface of well lid [2], the twin-lock head unit is connected together by five connecting blocks [12,13,14,15,16] the same well lids [2] that are located on well lid [2] bottom surface.

2, twin-lock head anti-stealing manhole cover as claimed in claim 1, the structure that it is characterized in that the twin-lock head unit is that lock core ［ 9 ］ is contained on the central link piece ［ 16 ］, two tapered ends ［ 3,4 ］ are contained in respectively between four connecting blocks ［ 12,13,14,15 ］, between connecting block ［ 12 ］ and ［ 13 ］, ［ 14 ］ and ［ 15 ］, on the tapered end ［ 3,4 ］, spring ［ 6,5 ］ is housed respectively, and two tapered ends ［ 3,4 ］ and lock core ［ 9 ］ are connected together by two steel cables ［ 10,1.1 ］ respectively.