CN201031393Y

CN201031393Y - Electromagnetical anti-stealing manhole cover

Info

Publication number: CN201031393Y
Application number: CNU2005200345906U
Authority: CN
Inventors: 张贵友
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-24
Filing date: 2005-06-24
Publication date: 2008-03-05
Anticipated expiration: 2015-06-24

Abstract

The utility model discloses a manhole cover for the access eye of an underground pipe network, in particular to an electromagnetic theftproof manhole cover. One end at the radial direction of the electromagnetic theftproof manhole cover is a tongue block and the other end is an electromagnetic switch with a lock tongue. The tongue block and the lock tongue are tongue shape which can enter into and exit out of a tongue block hole and a lock tongue hole conveniently. A pressure spring in the electromagnetic switch pushes back the lock tongue into the lock tongue hole to lock the manhole cover. An unlocking gun powers up the electromagnetic switch from an unlocking hole. The magnetic force is formed when a loop is energized, which pulls out the lock tongue from the lock tongue hole and then the manhole cover is opened. The electromagnetic theftproof manhole cover has the advantages of simple structure, easy manufacture, electricity saving, less failure, low cost, strong applicability and convenient operation.

Description

The electromagnetism anti-stealing manhole cover

Technical field the utility model is a kind of anti-well lid of usurping, and it is mainly used in the network of underground inspection hole of town road, as: feedwater, rainwater, sewage, coal gas, electric power, fire-fighting, move, telecommunications, traffic signals etc.

The general well lid of background technology is placed directly in the seam of walling crib, so often stolen for circle and shape.After well lid is stolen, the facility in the well is wrecked, also make some vehicles be absorbed in well head simultaneously, passerby falls in the well, and this has caused massive losses not only for the property of country, entity and individual, has brought serious threat also for the people's life security.

Stolen in order to prevent well lid, people have also taked thousand and one way:

1. be fixed on the walling crib with the key screw well lid, but the robber has just twisted screw easily with spanner.

2. with iron chains the well lid bolt is welded on the walling crib, but the robber then directly cuts off iron chains with bolt clipper.

3. adopt the electronic anti-theft well lid, the circuit complexity, the cost height needs power supply to keep, and regularly also will change battery: well lid is positioned in the open in addition, suffers the vibratory impulse of moist and vehicle for a long time, so electronic original part damages easily.

4. utilize electronic monitoring and control system antitheft, the pipe network dispersive line is long, and the infusion of financial resources of equipment and maintenance cost are quite high again.

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Because above-mentioned antitheft way exists weak point, so fail to obtain to promote.Most of well lids of determining now still adopt plain edition, have stolen and have filled, and are stolen again after filling, and the wounded complains, newspaper, TV exposure.

The utility model electromagnetism anti-stealing manhole cover, at common robber's behavior, the principle of utilization electromagnetic switch designs, and is characterized in:

In the bottom design of well lid 1 electromagnetic switch, it is simple in structure, easy to manufacture, easy to operate, and is not fragile.Cost of production is low.

2. will open well lid needs the power supply and the lockaid gun of certain voltage and electric weight, has only the specialized maintenance personnel just to be equipped with, and general robber can not spend to go specially to have made to order for several or tens well lids.

3. electromagnetic switch only just needs power supply when opening well lid, not electricity consumption at ordinary times, and energy conservation reduces maintenance cost.Summary of the invention the utility model electromagnetism anti-stealing manhole cover has structurally adopted multinomial technical measures:

1. a seam end has radially been opened a tongue card hole on walling crib, and the other end has been opened a dead bolt hole, is used for well lid and locks, and two holes are the arc angle hole of strip, and size is identical.

2. on well lid, designed 1 and powered up open keyhole, be used for electromagnetic switch is powered up,, prevented that the surface water from flowing into electromagnetic switch beyond the Great Wall at ordinary times with rubber stopper.Also have 2 to take off and cover the hole in addition, lay respectively at the both sides of electromagnetic switch.

3. a well lid bottom surface end radially is the tongue card, and the other end is equipped with the electromagnetic switch for the slip dead bolt.The tongue of tongue card and slip dead bolt is beloid, and thin ligulate before the back is thick is beneficial to well lid and packs into and lock and unblank to open.

4. electromagnetic switch is fixedly fastened by 2 screws and 1 switch, and the slip dead bolt is connected by 1 screw with lock core, and the slip dead bolt slides in the spacing card that slides, and the spacing card that slides is fixed by 2 screws.

5. electromagnetic switch mainly is made up of shell, coil, lock core, compression spring, rear support, back-up ring, Jiao Gai, sealing mat, electrode, simple in structure, compact, easy break-down not.

6. the coil design of electromagnetic switch is skeleton coil, and adopts the all-plastic sealing, prevents watered and wetting and the insulating properties that cause reduce and short trouble.

7. the electrode of electromagnetic switch is made of stainless steel material, prevents the circuit loose contact and the open circuit fault that cause because of oxidation corrosion.

Description of drawings Fig. 1 is electromagnetism anti-stealing manhole cover and walling crib Facad structure view.

Fig. 2 is electromagnetism anti-stealing manhole cover and walling crib back topology view.

Fig. 3 is radially (A-A) topology view of electromagnetism anti-stealing manhole cover and walling crib.

Fig. 4 is the walling crib topology view of electromagnetism anti-stealing manhole cover.

Fig. 5 is the well lid topology view of electromagnetism anti-stealing manhole cover.

Fig. 6 is the electromagnetic switch topology view of electromagnetism anti-stealing manhole cover.

Fig. 1 is in the figure of Fig. 6: 1-walling crib, 2-well lid, 3-electromagnetic switch, the fixing card of 4-switch, 5-connection screw, the spacing card of 6-slip dead bolt, 7-tongue card, 8-slip dead bolt, 9-power up open keyhole and rubber stopper, 10-take off and cover the hole, 11-tongue card hole, 12-dead bolt hole, 13-coil, 14-lock core, 15-compression spring, 16-spacing back-up ring, 17-switch earth terminal, 18-switch powers up cathode contact, 19-Unlocking gun cathode contact, 20-Unlocking gun, 21-switch housing, 22-switch rear support, Jiao Gai behind 23-switch, the fixing card of 24-switch screw, the spacing card screw of 25-slip dead bolt.

The embodiment of implementation method the utility model electromagnetism anti-stealing manhole cover is as follows:

1. well lid is locked: the tongue card (7) of well lid (2) is inserted in the tongue card hole (11) of walling crib (1), push away in again the slip dead bolt (8) of electromagnetic switch (3) being lived, cover well lid (2), under the effect of the compression spring (15) of slip dead bolt (8) in electromagnetic switch (3), rollback enters in the dead bolt hole (12), and well lid (2) is locked on the walling crib (1).

2. open well lid: take down the rubber stopper that powers up on the well lid (2) in the open keyhole (9), the rifle mouth insertion of electromagnetism Unlocking gun (20) is powered up in the open keyhole (9), rifle mouth cathode contact is contacted with the cathode contact (18) of electromagnetic switch, the cathode contact of Unlocking gun (19) contacts with well lid (2), power turn-on then, coil (13) energising of electromagnetic switch (3) produces magnetic force, with the past interior suction of lock core (14), lock core (14) pulling slip dead bolt (8) withdraws from the dead bolt hole (12) of walling crib (1), and well lid (2) just can be opened.

Claims

1. electromagnetism anti-stealing manhole cover, it comprises walling crib (1), well lid (2), electromagnetic switch (3), Unlocking gun (20), it is characterized in that: walling crib (1) goes up a seam end radially a tongue card hole (11), and the other end has a dead bolt hole (12); Well lid (a 2) bottom end radially is tongue card (7), and the other end is equipped with for the electromagnetic switch of slip dead bolt (8) (3), have in the front of well lid (2) one with rubber stopper beyond the Great Wall power up open keyhole (9), have 2 to take off and cover hole (10); Electromagnetic switch (3) is fixed on the well lid bottom by fixing card (4) and 2 screws (24), install coil in the electromagnetic switch shell (21) (13), the centre of coil is lock core (14), compression spring (15) is housed on the lock core rear axle, after rear axle passes rear support (22), at the axle tail spacing back-up ring (16) is housed, shell (21) rear end is connecting back Jiao Gai (23), back glue has covered 1 electromagnetic switch earthing electrode (17), 1 electromagnetic switch powers up cathode contact (18), the lock core front is connecting slip dead bolt (8) with screw (5), slip dead bolt (8) slides in the spacing card (6) that slides, and the spacing card (6) that slides is fixed on the well lid by 2 screws (25); The rifle mouth of Unlocking gun (20) inserts from powering up open keyhole (9), and the anodal contact of rifle mouth electromagnetic switch powers up cathode contact (18), cathode contact (19) the contact well lid of Unlocking gun (20).

2. electromagnetism anti-stealing manhole cover according to claim 1 is characterized in that: the tongue card (7) of described well lid (2) and the tongue of slip dead bolt (8) are ligulate.

3. electromagnetism anti-stealing manhole cover according to claim 1 is characterized in that: the tongue card hole (11) on the described walling crib (1) and dead bolt hole (12) size is identical, is strip arc angle hole and is positioned at the last seam of walling crib.

4. electromagnetism anti-stealing manhole cover according to claim 1 is characterized in that: the slip dead bolt (8) of described well lid (2) is pushed back in the dead bolt hole (12) that enters walling crib (1) by the compression spring (15) in the electromagnetic switch (3).

5. electromagnetism anti-stealing manhole cover according to claim 1 is characterized in that: the slip dead bolt (8) of described well lid (2) pulls it the dead bolt hole (12) of walling crib by the magnetic force that the energising of the coil (13) in the electromagnetic switch (3) produces.

6. electromagnetism anti-stealing manhole cover according to claim 1 is characterized in that: described electromagnetic coil (13) adopts skeleton overall plastic encapsulation.

7. electromagnetism anti-stealing manhole cover according to claim 1 is characterized in that: the electrode of described electromagnetic switch (17) and (18) are stainless steel substrates.