CN201254737Y

CN201254737Y - Strength anti-theft device for manhole cover

Info

Publication number: CN201254737Y
Application number: CNU2008201907548U
Authority: CN
Inventors: 王方洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-16
Filing date: 2008-09-16
Publication date: 2009-06-10
Anticipated expiration: 2018-09-16

Abstract

The utility model discloses a strong inspection well cover anti-theft device and relates to an inspection well cover anti-theft device. The utility model comprises an inspection well (00), a base (10), a flange (50) and a cover (20) which are connected in sequence from down to up; a strong lock (30) and a strong key (40) adaptive to the lock (30) are arranged on the edge of the cover (20); the strong lock (30) comprises a lock tube (31), a triangle convex bolt (32), a lock rod (33), a strong reed (34) and a bolt (5); the strong key (40) comprises a key tube (41) and a handle (43), and is in a T-shaped; and the front end of the key tube (41) is a triangle concave (42). The utility model has the advantages of simple structure, easy implementing and convenient operation; can adapt bad environments; inhibits the phenomenon that the inspection well cover is easy to be stolen to a certain extent; and is suitable for the collocation of the existing inspection well cover.

Description

A kind of powerful manhole cover anti-theft device

Technical field

The utility model relates to a kind of manhole cover anti-theft device, relates in particular to a kind of powerful manhole cover anti-theft device.

Background technology

As everyone knows, the inspection shaft spy of urban road is many, and it is also very general that its inspection shaft covers stolen phenomenon, and therefore economic loss, traffic accident and the personnel casualty accidents that causes can not be underestimated, and has brought serious threat for the city traffic management and the people's life security.Although government continues to increase the hitting dynamics to thief, produce little effect.From technical standpoint, although various manhole cover anti-theft device is multifarious, the technology content that has is also very high, as automatic warning etc., and impracticable.

Because the working environment of inspection shaft lid all is very abominable, not only to be exposed to wind and rain and the erosion of sewage, silt, also to suffer rolling of wheel.If adopt some accurate mechanical anti-theft locks, its internal construction will have pellet shot from a slingshot and spring inevitably, is very easy to corrosion, is difficult to adhere to work; If adopt the electronic anti-theft technology, its electronic devices and components can't be worked under rugged environment, and power supply also is big problem.

For above-mentioned reasons, so existing inspection shaft lid great majority still do not have lock, brought opportunity to thief.

Summary of the invention

The purpose of this utility model just is to overcome the hard nut to crack that prior art exists, and in the face of abominable actual environment, provides a kind of powerful manhole cover anti-theft device.

The purpose of this utility model is achieved in that

The utility model comprises existing inspection shaft, base, loose-leaf and the lid that connects successively from top to bottom; Be provided with powerful tapered end at the edge of lid, also have and the adaptive powerful key of tapered end.

Described powerful tapered end is made up of lock tube, the protruding tongue of triangle, locking bar, powerful reed and latch; The protruding tongue of triangle passes lock tube and lid successively, and its underpart is connected with locking bar, powerful reed and latch respectively.

Described powerful key is made up of key cylinder and handle, and T-shaped shape, the front end of key cylinder are the recessed mouths of triangle;

The internal diameter of the external diameter of key cylinder and lock tube mates each other, and recessed mouth of triangle and the protruding tongue of triangle mate each other.

The utlity model has following advantage and good effect:

1. simple in structure, implement easily, easy to operate;

2. can adapt to adverse circumstances, even powerful tapered end has the corrosion situation, because the exportable big turning moment of powerful key can be rotated powerful tapered end fully;

3. do not have special powerful key can't open the inspection shaft lid, therefore cause big difficulty, on certain degree, contained the phenomenon that the inspection shaft lid is stolen easily to larceny;

4. be applicable to the configuration of existing inspection shaft lid.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation (wherein lock tube broken section) of powerful tapered end;

Fig. 3 is the structural representation of powerful key.

Wherein:

00-inspection shaft;

10-base;

20-lid;

30-powerful tapered end,

31-lock tube, the protruding tongue of 32-triangle, 33-locking bar, 34-powerful reed, 35-latch;

40-powerful key,

41-key cylinder, the recessed mouth of 42-triangle, 42-handle;

50-loose-leaf.

The specific embodiment

Describe in detail below in conjunction with drawings and Examples:

One, overall

As Fig. 1, the utility model comprises existing inspection shaft 00, base 10, loose-leaf 50 and the lid 20 that connects successively from top to bottom; Be provided with powerful tapered end 30 at the edge of lid 20, also have and powerful key 40 that tapered end 30 is adaptive.

For improving safety factor of the present utility model, be provided with 1 ~ 3 powerful tapered end 30 at the edge of lid 20;

1 powerful tapered end 30 and loose-leaf 50 are uniform by 180 degree;

2 powerful tapered ends 30 and loose-leaf 50 are uniform by 120 degree;

3 powerful tapered ends 30 and loose-leaf 50 are uniform by 90 degree.

Two, critical piece

1, powerful tapered end 30

As Fig. 2, powerful tapered end 30 is made up of lock tube 31, the protruding tongue 32 of triangle, locking bar 33, powerful reed 34 and latch 35; The protruding tongue 32 of triangle passes lock tube 31 and lid 20 successively, and its underpart is connected with locking bar 33, powerful reed 34 and latch 5 respectively.

2, powerful key 40

As Fig. 3, powerful key 40 is made up of key cylinder 41 and handle 43, and T-shaped shape, the front end of key cylinder 41 are the recessed mouths 42 of triangle.

The internal diameter of the external diameter of key cylinder 41 and lock tube 31 mates each other, and recessed mouth 42 of triangle and the protruding tongue 32 of triangle mate each other.

Three, the course of work

1, locking closure

Lid 20 is covered on base 10, hold the handle 42 of powerful key 40, the key cylinder 41 of powerful key 40 is inserted in the lock tube 31 of powerful tapered end 30, even the protruding tongue 32 of triangle also inserts in the recessed mouth 42 of triangle; Rotate powerful key 40, make locking bar 33 change over to lid 20 edges below, promptly finish the process of locking closure.

2, uncap

Because the elastic force effect of powerful reed 34, locking bar 33 can not rotate easily, and locking bar 33 is produced could success below lid 20 edges.Therefore have only use and powerful tapered end 30 adaptive powerful keys 40 just can carry out.

Hold the handle 42 of powerful key 40, the key cylinder 41 of powerful key 40 is inserted in the lock tube 31 of powerful tapered end 30, even the protruding tongue 32 of triangle also inserts in the recessed mouth 42 of triangle; Rotate powerful key 40, make locking bar 33 produce lid 20 edges below, promptly finish the process of uncapping.

Claims

1, a kind of powerful manhole cover anti-theft device comprises existing inspection shaft (00), base (10), loose-leaf (50) and the lid (20) that connects successively from top to bottom; It is characterized in that:

Be provided with powerful tapered end (30) at the edge of lid (20), also have and the adaptive powerful key (40) of tapered end (30);

Described powerful tapered end (30) is made up of lock tube (31), the protruding tongue of triangle (32), locking bar (33), powerful reed (34) and latch (5); The protruding tongue of triangle (32) passes lock tube (31) and lid (20) successively, and its underpart is connected with locking bar (33), powerful reed (34) and latch (5) respectively;

Described powerful key (40) is made up of key cylinder (41) and handle (43), and T-shaped shape, the front end of key cylinder (41) are the recessed mouths of triangle (42);

The internal diameter of the external diameter of key cylinder (41) and lock tube (31) mates each other, and recessed mouth of triangle (42) and the protruding tongue of triangle (32) mate each other.

2, by the described a kind of powerful manhole cover anti-theft device of claim 1, it is characterized in that:

Be provided with 1 ~ 3 powerful tapered end (30) at the edge of lid (20);

1 powerful tapered end (30) and loose-leaf (50) are uniform by 180 degree;

2 powerful tapered ends (30) and loose-leaf (50) are uniform by 120 degree;

3 powerful tapered ends (30) and loose-leaf (50) are uniform by 90 degree.