CN2366452Y

CN2366452Y - Theft-proof manhole cover and key therefor

Info

Publication number: CN2366452Y
Application number: CN 99223339
Authority: CN
Inventors: 杨特; 杨凤鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-02
Filing date: 1999-04-02
Publication date: 2000-03-01
Anticipated expiration: 2009-04-02

Abstract

The utility model relates to a theft-proof manhole cover and a special key thereof. The utility model is provided with a pedestal, and a well cover is arranged in the pedestal. The middle part of the well cover is provided with a through hole, and a rotating disk is arranged at a place corresponding to the through hole below the well cover. The middle part of the rotating disk is provided with a key hole, and an inserting rod is hinged on the rotating disk. The end of the inserting rod is inserted into a pedestal jack to fix the well cover and the pedestal together, which has a theft-proof function. For matching with the anti-theft manhole cover to use, the utility model is also provided with a special key which is provided with a key rod, and one end of the key rod is provided with a key head matched with the key hole on the rotating disk. The utility model has the advantages simple structure, convenient operation and reliable locking, and prevents the well cover from being stolen and lost.

Description

Anti-stealing manhole cover and private key thereof

The utility model relates to a kind of anti-stealing manhole cover and private key thereof that cities and towns upper and lower water course, communication cable and network of underground use that be suitable for.

At present, the well lid that uses on the upper and lower water course in China cities and towns, communication cable and the network of underground all is directly to be placed in the base usually, between well lid and the base without any locking device.Owing to there is not the measure of strick precaution, therefore, the stolen phenomenon of well lid takes place in regular meeting.In addition, the upper and lower water course in China cities and towns, communication cable and network of underground be generally all along road pavement, so, well head also all is arranged on the road surface of road, in case well lid is stolen, not only national wealth suffers a loss, and, go back the safety of entail dangers to pedestrian and vehicle.

The purpose of this utility model is to overcome the deficiencies in the prior art part, and existing well lid is improved, and a kind of anti-stealing manhole cover and private key thereof are provided.

The utility model is achieved in that

It has a base, well lid is housed in base, there is a through hole at the middle part of well lid, below well lid, with the through hole corresponding position rolling disc is housed, there is a keyhole at the middle part of rolling disc, is hinged with inserted link on rolling disc, and the end of inserted link is inserted in the jack of base, well lid and base are fixed together, play antitheft effect.

For being used above-mentioned anti-stealing manhole cover, the utility model also has a private key, and described private key has a key bar, an end of key bar have one with rolling disc on the key bit that matches of keyhole.

Advantage of the present utility model is:

1, simple in structure, reliable lock is opened and must be used private key, has avoided that well lid is stolen to be lost, and has guaranteed the safety of pedestrian and vehicle.

2, cheap, the utility model is compared with common well lid does not increase for how many cost of production, and manufacturing process is simple, accommodates in production in enormous quantities.

3, it is convenient to lock, open, and key bit is inserted in the keyhole, half-twist, and well lid just locks together with base, 90 ° of reverse rotations, both just get back to opening, and are easy and simple to handle, are easy to grasp.

Description of drawings:

Fig. 1 is the structural representation of the utility model anti-stealing manhole cover;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the partial enlarged drawing of Fig. 2;

Fig. 5 is the C portion enlarged drawing of Fig. 2;

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

Fig. 7 is that the D of Fig. 4 is to view;

Fig. 8 is the structural representation of the utility model private key;

Fig. 9 is the another kind of structural representation of the utility model private key.

Provide embodiment of the present utility model below in conjunction with accompanying drawing:

Embodiment 1:

To shown in Figure 7, anti-stealing manhole cover of the present utility model has a base 1 as Fig. 1, and the both sides of base 1 have a jack respectively; Well lid 2 is housed in base 1, two air vents 6 are arranged on the well lid 2, a through hole 8 is arranged at the middle part of well lid 2, below well lid 2, with through hole 8 corresponding positions rolling disc 5 is housed, two arc sliding trays 9 are arranged on the rolling disc 5, a bolt that is fixed together with well lid 2 is housed in each sliding tray 9, thereby rolling disc 5 and well lid 2 are linked together, the length of described sliding tray 9 is 1/4th of circle, and therefore, rolling disc 5 can rotate in 0 °～90 ° scope with respect to well lid 2; A keyhole 7 is arranged in the centre of rolling disc 5, described keyhole 7 is a hexagon, also can be triangle, pentagon, octagon, square or rectangle, all can play the effect of control rolling disc 5 rotations, described keyhole 7 is corresponding with the through hole 8 at well lid 2 middle parts, so that open; Be inserted into respectively in the jack of base 1 both sides in the end that also is hinged with 4, two inserted links 4 of two inserted links on the rolling disc 5, well lid 2 and base 1 are tightened together; Also having 3, two inserted links 4 of both direction shelves from direction shelves 3, to pass respectively on the bottom surface of well lid 2, be used for limiting the direction of motion of inserted link 4, so that be inserted into accurately in the jack of base 1.

In order to be used above-mentioned anti-stealing manhole cover, the utility model also has a private key, as shown in Figure 8, described private key has a key bar 11, an end of key bar 11 have one with rolling disc 5 on the key bit 10 that matches of keyhole 7, described key bit 10 is a hexagon, key bit 10 also can be triangle, pentagon, octagon, square or rectangle, its shape should match with keyhole 7, so that drive rolling disc 5 rotations, control inserted link 4 stretching motions; The other end at key bar 11 also has a hook 12, and the air vent 6 on hook 12 and the well lid 2 matches, and can extend in the air vent 6, and well lid 2 hook from base 1 is come out.

Embodiment 2:

The structure of anti-stealing manhole cover such as embodiment 1, private key is a telescopic key, as shown in Figure 9, the key bar 11 of private key and hook 12 are installed in respectively in the endoporus at steel pipe 13 two ends, one end of key bar 11 has a key bit 10, the other end and middle part have a through hole 15 respectively, fixing between key bar 11 and the steel pipe 13 with pin 14, during use, key bit 10 is stretched, and pin 14 is inserted in the through hole 15 of key bar 11 ends, time spent not, key bit 10 pinch ins, pin 14 are inserted in the through hole 15 at key bar 11 middle parts, prevent that it from dropping out; One end of described hook 12 extend in the steel pipe 13, and a nut 16 is housed, and a round nut 17 is housed in the end of steel pipe 13, is used for nut 16 is blocked, and prevents that hook 12 from deviating from from steel pipe 13; All movable between above-mentioned said key bar 11 and hook 12 and the steel pipe 13, can stretch during use, the time spent can pinch in, to reduce the volume of private key, is easy to carry.

Claims

1, a kind of anti-stealing manhole cover, it has a base (1), well lid (2) is housed in base (1), it is characterized in that, there is a through hole (8) at the middle part of well lid (2), below well lid (2), with through hole (8) corresponding position rolling disc (5) is housed, there is a keyhole (7) at the middle part of rolling disc (5), be hinged with inserted link (4) on rolling disc (5), the end of inserted link (4) is inserted in the jack of base (1).

2, the private key that is used of a kind of and anti-stealing manhole cover is characterized in that it has a key bar (11), and an end of key bar (11) has one to go up the key bit (10) that keyhole (7) matches with rolling disc (5).

3, private key according to claim 2 is characterized in that, also has a hook (12) at the other end of key bar (11).