CN2535451Y - Anti-theft manhole cover - Google Patents

Abstract

The utility model provides a theftproof manhole cover forming an integrated manhole together with a manhole body (1) and a cover ring (2). The theftproof manhole cover adds a plurality of devices such as a clasp (3), a fixing bayonet (5) and a movable bayonet (7) driven by a lock core (6) based on the prior common cast iron manhole cover to prevent the manhole cover from being stolen. The theftproof manhole cover remedies the defect that the common cast iron manhole cover is easy to be stolen and has the advantages of keeping city appearance, reducing loss of national property, avoiding the accident of casualties caused by the passerby falling into the manhole carelessly, ensuring the smooth of vehicle running and never increasing workload of the municipal employee pointlessly, etc.

Description

Anti-stealing manhole cover

Affiliated technical field

The utility model is one of parts in the urban operating mechanism pipe network system of cities and towns, and it cooperates with inspection shaft well body, cage forms complete inspection shaft.

Background technology

In the prior art, common inspection shaft lid (not applying for a patent) commonly used has two classes, and a class is that steel concrete is made, and a class is that cast iron is made.

Just not saying the reinforced concrete soil property is temporary.

Castiron inspection shaft lid, its mounting means are that the inspection shaft lid directly one is put and got on the cage on inspection shaft well body top.Because the inspection shaft that this kind mode is settled lid can be moved it away easily, for a long time, some lawless persons forget what is right at the sight of profit, and under the table the inspection shaft lid are taken away and sell for money with waste product.The serious consequence of this phenomenon is: the urban environment looks are destroyed, caused bad social influence; 2. national wealth suffers a loss; 3. think especially very be, as in time settling new inspection shaft lid again, may make the pedestrian fall into inspection shaft accidentally and damage, death by accident.Perhaps bring difficulty (this class incident time have report) in the media to vehicle '; 4. settle the employee that new inspection shaft covers to municipal sector to increase workload.

Summary of the invention

In order to overcome the defective of existing cast iron inspection shaft lid, the utility model is improved the inspection shaft lid exactly, makes it and well body, the tighter one of thickly becoming of cage, is unlikely making the lawless person destroy urban operating mechanism easily.

The technical scheme that its technical problem that solves the utility model adopts is: the snap ring that protrudes from inner ring in the inboard casting one of inspection shaft lid cage, on well lid, cast a fixedly bayonet socket, become 180 ° well lid edge with fixing bayonet socket, make a rotating movable bayonet socket again.When fixedly bayonet socket and movable bayonet socket were stuck on the cage snap ring in line, well lid and cage just can not separatedly easily come, thereby reached antitheft purpose.

The beneficial effects of the utility model are: by better simply transformation, can lock Cover of inspection well, the lawless person can not steal well lid easily, can prevent that appearance of city from being destroyed, can keep the good appearance of the city, city's looks, can reduce the loss of national wealth, can avoid the pedestrian to fall into inspection shaft accidentally and the accident of injures and deaths, make vehicle ' smooth, unobstructed, do not increase municipal employee's workload not meaninglessly.

Description of drawings

Fig. 1 is Cover of inspection well, cage plan view, and the I-I sectional drawing.

Figure A1 is the drawing that A point amplification and well lid are lock-out state among Fig. 1, and the II-II sectional drawing.

Figure A2 is the drawing that A point amplification and well lid are unlock state among Fig. 1, and the III-III sectional drawing.

Fig. 2 is lockhole, lock core section drawing.

In the accompanying drawings: 1-inspection shaft well body; 1 '-the external edge of well (well body inner edge and cage inner edge 2 " overlap); 2-Cover of inspection well seat (abbreviation cage); 2 '-the cage outer rim; 2 "-cage inner edge; 3-cage snap ring, 3 '-cage snap ring inner edge; 4-Cover of inspection well (abbreviation well lid); 4 '-the well lid outer rim; 5-fixedly bayonet sockets; 6-lock core; 7-movable bayonet socket; 8-lockhole (inserting the hole of key); 9-active card muzzle tube; 10-screw; 11-lead sealing; 12-peace lockhole (placing the hole of lock core); 13-lock core marble and pellet shot from a slingshot hole.

The specific embodiment

The anti-stealing manhole cover that provides for achieving the above object, it is characterized in that: go up at well body (1) and press fixedly cage (2) of traditional method, cast a snap ring (3) that protrudes from inner ring at the inside line of cage (2), on well lid (4), cast a fixedly bayonet socket (5), becoming with fixing bayonet socket (5) near 180 ° well lid (4) edge, make a movable bayonet socket (7) that links with lock core (6), one end of movable bayonet socket (7) is made sleeve (9) shape, be enclosed within the lower end of lock core (6), fixed with screw (10), lock core (6) can carry out the rotation of 90 ° (or 360 °) by drive activity bayonet socket (7).Basic structure is seen accompanying drawing Fig. 1, shown in Figure 2.

One, the operating principle of anti-stealing manhole cover is:

1, on cage, places well lid.Key is inserted lockhole (8), the twisting key, lock core (6) rotates, and makes lockhole (8) be the north-south (shown in figure A2) of drawing, can place appropriate.

2, usual anti-theft state.After placing well lid (4) on the cage (2), key is inserted lockhole (8), the twisting key, lock core (6) rotates, and the East and West direction that makes lockhole (8) be drawing (must make movable bayonet socket (7) straight towards the outer rim of well lid, promptly towards the east orientation of drawing.As scheme shown in the A1).Bayonet socket (5) and movable bayonet socket (7) are stuck on the cage snap ring (3) together owing to have fixedly, thus well lid (4) just can not be taken away easily, thereby reach antitheft purpose.

3, lubricated lock core: can rotate freely in order to guarantee lock core (6), and the lock in pellet shot from a slingshot (13) activity freely, after placing well lid (4) at every turn, should inject an amount of machine oil or butter from the top of lock core (6), make oil in peace lockhole (12) and lockhole (8), play anti-corrosion and lubricated effect.

4, prevent foreign matter bonding, obstruction in the lockhole.Put well lid (4) well, inject after the machine oil, in the top headspace of lock core (6), sealed, shown in (11) among Fig. 2 with lead.Simultaneously, lockhole (8) is made the form that is led directly to the bottom by top,, disclose several times, silt, foreign material are fallen among the inspection shaft, to guarantee the unimpeded of lockhole (8) with key as falling into some silts or tiny foreign material in the lockhole (8).

5, take out well lid.Prize lead sealing (11) with sharper keen and hard utensil, key is inserted lockhole (8), the twisting key, lock core (6) rotates, and makes lockhole (8) be the north-south (shown in figure A2) of drawing, can take out well lid.

Two, several problems that need explanation:

1, lock core and well lid is fixing.Open a peace lockhole (12) on well lid (4), this top, hole is big, the bottom is little.Lock core (6) is slightly less than peace lockhole (12), and it is little also to make big bottom, top.Lock core (6) is put into peace lockhole (12), and its lower end puts the sleeve (9) of movable bayonet socket (7), uses screw (10) to be fixed then.Lock core (6) has promptly fixed (referring to shown in Figure 2) with well lid (4) at above-below direction.Lock core (6) is fixed with the principle of common spring lock (because of prior art is arranged, so the signal of not drawing) at circumferencial direction with well lid (4) and is got final product.

2, the structure of lock core.Adopt the principle of common spring lock to get final product.Because of technology maturation, this does not give unnecessary details.

3, the key of unblanking.According to the principle of opening cylinder lock, make abundant firm key.In certain regional extent in cities and towns, can only adorn the inspection shaft lid of a lock, configurable one or some of the key of this lock by the keeping of local municipal sector, has only the staff of municipal sector just can get key and the inspection shaft of having the right to unblank to open.

Claims (1)

1. anti-stealing manhole cover, it cooperates with inspection shaft well body (1), cage (2) forms inspection shaft, of the present utility model being characterised in that at the inside line of cage (2) cast a snap ring (3) that protrudes from inner ring, on well lid (4), cast a fixedly bayonet socket (5), becoming with fixing bayonet socket (5) near 180 ° well lid (4) edge, make one with lock core (6), by the movable bayonet socket (7) that sleeve (9), screw (10) link, lock core (6) can carry out the rotation of 90 ° (or 360 °) by drive activity bayonet socket (7).

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