CN201148788Y - Anti-theft lock for man-hole cover - Google Patents

Abstract

The utility model discloses an anti-theft well cover lock which consists of a lock body, a lock latch, a lock core, etc., and a special key matched with the anti-theft lock. The well cover can be opened by inserting the concave special key into a keyhole on the well cover, sheathing the polygonal head of the lock core, and rotating the key to drive the lock core and to drive a strike rod to strike the lock latch. By adopting the technical scheme, the anti-theft well cover lock can achieve the following effects: (1) the lock latch and the lock core can be simultaneously and respectively fixed in the lock body to form an integral lock and achieve centralized force, convenient installation and flexible operation; (2) the lock latch is fixed directionally by adopting two rails and a single shaft to prevent the occurrence of the failure in opening well cover due to the disjoint of a directional rod on the lock latch and a fixed connection rod on a shaft rotating device resulting from the swing of the lock latch; and (3) the adjustable lock latch with wide application range can perform anti-theft function for well covers of different shapes and sizes only by adjusting the length of the lock latch.

Description

Manhole antitheft lock

Technical field:

The utility model relates to fixed buildings, relates in particular to the manhole antitheft lock that is used for Urban Buried Pipeline Network.

Background technology:

In urban construction, network of underground is important ancillary facility, has pipe network that inspection shaft must be arranged, and inspection shaft is arranged, and must use the lid of covering inspection shaft.At present, well lid that city inspection shaft adopted or ironcasting so well lid is usually stolen, underground installation is suddenlyed suffer from breakoff phenomenon and taken place repeatedly, not only cause damage to national wealth, more jeopardize citizen's life security.Though now also have new anti-stealing manhole cover to appear on the market, its anti-theft effect is unsatisfactory.

Summary of the invention:

The purpose of this utility model provides a kind of manhole antitheft lock, the utlity model has that volume is little, flexible operation is easy, durable in use, characteristics such as theftproof is good, and the well lid that can be fit to all size model uses.

Design scheme of the present utility model is as follows: the utility model is made up of lock body, dead bolt, lock core etc., and the private key that is complementary with theftproof lock therewith.

Described lock body is by flat base, perpendicular two convex shoulders of flat base and the lock core base that is positioned at flat base one side are formed jointly therewith;

On perpendicular two convex shoulders of described and flat base a hole is arranged respectively, be the dead bolt jack, two holes are coaxial;

Described dead bolt is " fourth " font, and end is a position plate, and dead bolt passes above-mentioned two holes, on the dead bolt between two convex shoulders return spring is arranged, and described return spring is by the catch location that is fixed on the dead bolt;

Described lock core is polygon and cylindrical combination, after the column part of lock core passes the lock core base, links to each other with driving lever perpendicular to lock core;

The other end of above-mentioned driving lever is between the position plate and convex shoulder of dead bolt;

In order to adapt to different well lids, the position plate of dead bolt end is provided with set screw, can realize the length of dead bolt emersion;

The key of described unlatching anti-stealing manhole cover is that polygon with the lock core afterbody matches and also be polygonal Baltimore groove, and handle is arranged.

Beneficial effect: adopt technical scheme described in the utility model, can reach following effect: 1, dead bolt, lock core are fixed in the lock body step by step simultaneously and are an integral body with lock body, and strength is concentrated, simple installation, flexible operation.2, adopt the double track uniaxial orientation fixedly dead bolt avoided dead bolt to swing and the drawback that makes orientation lever on the dead bolt and the disconnection of the stationary links on the shaft machine cause opening well lid.3, dead bolt can be regulated, and is applied widely, only need regulate dead bolt length to the well lid of difformity, different sizes and can play antitheft effect.

Description of drawings:

Fig. 1 is a structure diagram of the present utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 be among Fig. 2 A to view;

Embodiment: the utility model is described in detail below in conjunction with accompanying drawing.

As shown in the figure: with perpendicular two convex shoulders of the flat base of lock body 1 on, a hole is respectively arranged, be the jack of dead bolt 2, this two hole is coaxial; In lock body 1 flat base one side, be the base of lock core 8;

The end of " fourth " font dead bolt 2 is a position plate 5, and return spring 4 is arranged on the dead bolt between two convex shoulders 2, and return spring 4 is by catch 3 location that are fixed on the dead bolt;

Described lock core 8 is by polygonal body 9 and cylinder be combined into, after the column part of lock core 8 passes the lock core base, links to each other with driving lever 7 perpendicular to lock core;

The other end of above-mentioned driving lever is between the position plate 5 and convex shoulder of dead bolt;

In order to adapt to different well lids, the position plate of dead bolt end is provided with set screw 6, can realize the length of dead bolt 2 emersions;

The key of described unlatching anti-stealing manhole cover is that polygonal body 9 with the lock core afterbody is that match and also be polygonal Baltimore groove, and handle is arranged.

During installation, lock body 1 is fixed on the well lid back side, and dead bolt is adjusted to ideal position.

During use, the keyhole that covers with spill private key fill-in well, and cover letter lock core polygon head 9, key drives lock core 8 and rotates then, stirs dead bolt 2 retractions thereby drive driving lever 7, opens well lid.

Claims (2)

1, a kind of anti-stealing manhole cover lock, form by lock body, dead bolt, lock core and key etc., it is characterized in that: described dead bolt is " fourth " font, end is a position plate, dead bolt pass with perpendicular two convex shoulders of lock body flat base on two holes, on the dead bolt between two convex shoulders return spring is arranged, described return spring is by the catch location that is fixed on the dead bolt; The position plate of dead bolt end is provided with set screw,

Described lock core is gengon and cylindrical combination, after the barrel portion of lock core passes the lock core base, links to each other with driving lever perpendicular to lock core.

2, anti-stealing manhole cover according to claim 1 lock is characterized in that: the key of described unlatching anti-stealing manhole cover is that polygon with the lock core afterbody matches and also be polygonal Baltimore groove, and handle is arranged.

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