CN2466220Y

CN2466220Y - Anti-theft manhole cover

Info

Publication number: CN2466220Y
Application number: CN 01211772
Authority: CN
Inventors: 高明柱; 任春雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-21
Filing date: 2001-02-21
Publication date: 2001-12-19
Anticipated expiration: 2011-02-21

Abstract

An anti-theft well cover consists of a well cover, an electromagnetic lock and a key. The lock consists of a lock body, a lock core, a lock tongue, an iron core, an electromagnetic coil and a spring. The key consists of a key rod, an insulating rod, a bayonet lock, a limiting block, a positioning column, a power supply contact, a power line, a switch and a handle. When the well lid needs to be opened, a key power supply is connected with the storage battery, then the key is inserted into the hole of the well lid and rotates 90 degrees, a contact on the key rod is connected with a binding post of the lock, the coil works, the lock tongue is sucked, and the well lid is opened. After the work is finished, the well cover is put back to the original position, and the electromagnetic lock is automatically locked.

Description

Anti-stealing manhole cover

The utility model relates to a kind of well lid that is applicable to feedwater, following water, communication, heating, mainly is anti-stealing manhole cover.

Current use does not all have anti-theft feature at the well lid of feedwater, water, communication, heating down, causes well lid often to be lost, or is damaged, and the not only normal life of influence also can cause personal injury sometimes.

The purpose of this utility model is exactly that a kind of anti-stealing manhole cover is provided in order to overcome the deficiencies in the prior art.

The purpose of this utility model can reach by following measure:

This well lid comprises well lid, theftproof lock, key, support, concrete structure is to be theftproof lock (2) below the well lid (3), the lock body of theftproof lock is a metal-back, be insulation lock core (17) in the shell, lock core is provided with coil (19), and the lock core center is movable core (18), the preceding termination insulation dead bolt (16) of iron core, be spring (20) between its rear end and the lock core, be provided with prap (9), prap connecting coil at the lock body end face.Key bar (12) upper end is handle (7), its lower end is insulating bar (22), insulating bar is provided with power supply moving contact (25) (26) and limited block (23), the insulating bar lower end is reference column (24), key bar is provided with well lid bayonet lock (21), power line (8) one ends in the key bar connect battery (27) by the switch on the handle (6), and its other end connects prap (9) on the lock body by power contact head.

The purpose of this utility model can also reach by following measure:

Support (11) is fixed on below the well lid, and support is provided with key positioner hole and power supply stationary contact (13) (14), and stationary contact connects the prap (9) of lock body by lead (10).

Well lid is provided with key hole (5).

Description of drawings:

Fig. 1 is a general illustration of the present utility model, the state of expression well lid keyed, (1) manhole cover base wherein, (2) lock body, (3) well lid, (4) folding.

Fig. 2 is the vertical view of Fig. 1, expression profile, wherein (5) key hole.

Structural representation when Fig. 3 is key unlocking, (6) switch wherein, (7) handle, (8) power line, (9) prap, (10) lead, (11) support, (12) key bar.

Fig. 4 be among Fig. 3 A to view, (13) (14) stationary contact wherein.

Fig. 5 is the structural representation of locking among Fig. 1, (15) holder wherein, (16) dead bolt, (17) insulation lock core, (18) movable core, (19) electromagnetic coil, (20) spring.

Fig. 6 is the left view of Fig. 5.

Fig. 7 is the right view of Fig. 5.

Fig. 8 is a key schematic diagram among Fig. 3, (21) bayonet lock wherein, (22) insulating bar, (23) limited block, (24) reference column, (25) (26) power supply moving contact.

The utlity model has following advantage:

1, anti-theft is good.

2, unlatching, easy to use.

3, simple in structure, cost is low.

Below the utility model is described further:

This anti-stealing manhole cover is made up of well lid and theftproof lock, and well lid is hinged on the manhole cover base by folding, Motionless electromagnetic lock below the well lid, and electromagnetic lock can be opened by a private key.Electromagnetic lock is made up of lock body, lock core, dead bolt, iron core, electromagnetic coil, spring.Key is made up of key bar, insulating bar, bayonet lock, limited block, reference column, power supply moving contact, power line, switch, handle.

Operating principle and operation sequence: when operating personnel need go into the well work, well lid key attaching plug is inserted in again key is inserted in the key hole of well lid on the 12V battery socket that carries, half-twist to the right, put in place the back with hand thumb by on the key switch, make the electricity of battery be transferred to the electromagnetic coil of lock by the contact of key bar, produce suction, iron core is inhaled moving, dead bolt shrinks, and opens lock, when hear " " one after, the right hand is firmly carried key handle, under the effect of bayonet lock, well lid is opened, work finish well lid put back to original position after, electromagnetic lock is automatically locked.

Claims

1, a kind of anti-stealing manhole cover, comprise well lid, theftproof lock, key, support, it is characterized in that below the well lid (3) be theftproof lock (2), the lock body of theftproof lock is a metal-back, it in the shell insulation lock core (17), lock core is provided with coil (19), the lock core center is movable core (18), the preceding termination insulation dead bolt (16) of iron core, it between its rear end and the lock core spring (20), be provided with prap (9) at the lock body end face, the prap connecting coil, key bar (12) upper end is handle (7), and its lower end is insulating bar (22), and insulating bar is provided with power supply moving contact (25) (26) and limited block (23), the insulating bar lower end is reference column (24), key bar is provided with well lid bayonet lock (21), and power line (8) one ends in the key bar connect battery (27) by the switch on the handle (6), and its other end connects prap (9) on the lock body by power contact head.

2, according to the said well lid of claim 1, it is characterized in that support (11) is fixed on below the well lid, support is provided with key positioner hole and power supply stationary contact (13) (14), and stationary contact connects the prap (9) of lock body by lead (10).

3,, it is characterized in that well lid is provided with key hole (5) according to the said well lid of claim 1.