CN2313966Y - Anti-stealing safety manhole cover - Google Patents

Abstract

The utility model relates to an anti-stealing safety manhole cover which is an underground manhole facility and the manhole cover of the manhole well in the industries, such as an underground water supplying and water drainage industry of urban and rural areas, a post and telecommunication industry, etc. The utility model is characterized in that a manhole cover lock is fixed at the edge of the inner side of the manhole cover, and a positioning boss is arranged at the edge of the manhole cover. A boss rabbet which is corresponding to the positioning boss is arranged in a manhole cover base. A key tongue of a matched special key is made into a double-groove shape. Compared with the prior art, the anti-stealing safety manhole cover has the advantages of simple structure, low manufacture cost, convenient locking and opening, firmness, reliability, etc. Simultaneously, the varying specification of the special key is increased, and the safe security is added.

Description

The anti-theft security manhole lid device

The utility model relates to that a kind of town and country are undergroundly given, draining, the safe antitheft protective device of facility, well head well lid in the industry missile silos such as post and telecommunications, power cable.

At present, the stolen problem of losing of all kinds of underground walling cribs, well lid has become society's last one big public hazards in the town and country construction.Owing to well lid is lost electric power, telecommunications interruption accident and the frequent accidents generation that takes place, not only caused enormous economic loss, and directly threatened the both urban and rural residents's life security to country, brought harmful effect for the spiritual civilization of the whole society.For addressing the above problem, the applicant once released ZL94224737.X Chinese patent product, though received manhole cover anti-theft effect preferably, but still have some technological deficiencies.As the double-pin linkage that is adopted, complex structure, the cost of production height, locking inconvenience (can not automatic blocking), outside the lock body spring is exposed to, blow-by, protective is poor; Its private key structure is single simultaneously, and excursion is little.

The utility model is the improvement on above-mentioned prior art, its goal of the invention is at the deficiency of above-mentioned my patented product and improved a kind of lock body structure is simple, install easily, locking, unlatching are conveniently, safeguard simple, the private key specifications vary is many, more safe and reliable anti-theft security manhole lid device.

Goal of the invention of the present utility model can be achieved by the following technical programs: it is made up of well lid, walling crib seat, pattern manhole cover lock three parts.Keyhole 11 is located at the well lid front and keeps to the side to be shaped on positioning boss 12 at the edge of well lid along diametric(al) in the place, is provided with in the walling crib seat and positioning boss 12 corresponding positioning boss seams 13 simultaneously.The lock body 3 that lock pin 2, spring 6 are housed fixedly is loaded on the well lid inboard by screw 1, and jam plate 4 is fixed on the lock pin 2 by nut 5.

Open the utility model and be furnished with private key, it is in the central authorities of handle 22 shroud 23 to be housed, one end of hollow key bar 17 is contained in the shroud 23, an other end links to each other with key tongue 21 by bearing pin 20, and pressure cap 24 is contained in shroud 23 center of top, in hollow key bar 17 push rod 18 is housed, spring 15 is equipped with in push rod 18 upper ends, and join by carriage 16 and pressure cap 24, the lower end of push rod 18 contacts with key tongue 21, and key tongue 21 has two glossal canals 26 of variable-width.

The advantage that the utility model is compared with background technology is: the first, simple in structure, low cost of manufacture; The second, realize automatic blocking, easy for operation.As only needing the positioning boss seam 13 on the 12 fill-in well ring supports of the positioning boss on the well lid is fallen into walling crib and gets final product automatic blocking.Three, lock pin and spring close and are packaged in the lock body, are convenient to the lubricating and antirust erosion, and the protective of lock body itself is improved, and have prolonged application life.Four, the improvement of private key design makes the manufacturing specification of key can reach over one hundred kind, and different applying units can not be uncapped mutually, and good level security is arranged.

Accompanying drawing and drawing explanation:

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

Fig. 2 is a pattern manhole cover lock structural representation of the present utility model;

Fig. 3 is the D-D sectional structure schematic diagram of Fig. 2;

Fig. 4 is the utility model private key structural representation;

Fig. 5 is the key tongue deadweight hang schematic diagram of the utility model private key;

Fig. 6 installs and uses view for the utility model;

Wherein:

1-screw 2-lock pin 3-lock body

4-jam plate 5-adjusts nut 6-spring

7-shelves pin 8-walling crib seat 9-well lid

11-keyhole 12-positioning boss 13-boss seam

14-shelves pad 15-spring 16-carriage

17-key bar 18-push rod 20-bearing pin

21-key tongue 22-handle 23-shroud

The two glossal canals of 24-pressure cap 26-

Embodiment: this manual the 5th part and in conjunction with the accompanying drawings 1-6 clearly provided embodiment of the present utility model, no longer repeat here.It is such opening process of the present utility model with private key: under action of gravity, the key tongue vertically inserts in the keyhole, depress push rod, under the effect of stage clip post rod mechanism, key tongue counter-rotating becomes levels for 90 °, carries on then and makes key tongue location and rotation in the direction of the clock, the key tongue is contacted with baffle plate, stir jam plate, promote lock pin and move the H distance, well lid can be opened.Simultaneously because the utility model key tongue is a dual-slot structure, so change key bar diameter d and key tongue double flute width X.Y, can draw 125 kinds of the keys of different specification size, level security is more reliable.In actual applications, tentative parameter sees the following form:

	Ⅰ	Ⅱ	Ⅲ	Ⅳ	Ⅴ
						The d diameter	18	19	20	21	22
The x groove width	4	5	6	7	8
						The y groove width	4	5	6	7	8

Adopt the technical solution of the utility model also can cover the on-the-spot installation of transforming, can reach equally and avoid the stolen loss that causes of well lid at the missile silo that uses that is completed.Underground fiber optic cables safety to the protection post and telecommunications has huge effect especially.

Claims (2)

1, a kind of anti-theft security manhole lid device is made up of well lid, walling crib seat, pattern manhole cover lock three parts; It is characterized in that:

A, keyhole (1) are located at the well lid front and keep to the side to be provided with positioning boss (12) at the edge of well lid along diametric(al) in the place, are provided with in the walling crib seat simultaneously and the corresponding positioning boss seam of positioning boss (12) (13);

B, the lock body (3) that lock pin (2), spring (6) be housed fixedly are loaded on the well lid inboard by screw (1), and jam plate (4) is fixed on the lock pin (2) by nut (5).

2, a kind of private key of opening the described anti-theft security manhole lid device of claim 1, in the central authorities of handle (22) shroud (23) is housed, one end of hollow key bar (17) is contained in the shroud (23), an other end links to each other with key tongue (21) by bearing pin (20), pressure cap (24) is contained in shroud (23) center of top, push rod (18) is housed in hollow key bar (17), spring (15) is equipped with in the upper end of push rod (18), and join by carriage (16) and pressure cap (24), the lower end of push rod (18) contacts with key tongue (21); It is characterized in that: key tongue (21) has two glossal canals (26) of variable-width.

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