CN2228929Y - Theft-proof manhole cover - Google Patents

Abstract

The utility model discloses a theft-proof manhole cover. The theft-proof manhole cover is characterized in that one end of the manhole cover corresponding to both end edges is hinged with a manhole edge, and the lower side of the other end is provided a rotary lock which acts with a corresponding lock latch on the manhole edge to conveniently lock the manhole cover and effectively prevent the manhole cover from loss and harm to pedestrians and vehicle traffic caused by the loss of the manhole cover.

Description

Anti-stealing manhole cover

The utility model relates to a kind of well lid, especially municipal administration, the used anti-stealing manhole cover of communal facilities.

Being used for up and down at present, the casting iron well lid of communal facilitieies such as water, coal gas, cable generally adopts well lid directly to cover at well head, there is not locked instrument between well lid and the well head, the stolen phenomenon of well lid happens occasionally, and causes the national wealth loss, works the mischief also for simultaneously pedestrian, vehicular traffic.

The purpose of this utility model provides a kind of anti-stealing manhole cover, can prevent effectively that well lid is stolen, guarantees the traffic safety of pedestrian, vehicle.

For achieving the above object, the solution that the utility model adopts is: on the edge, two ends of well lid, one end is provided with hinge, below the other end well lid twist lock is housed, hinged with hinge corresponding on the well and with the well on the interaction of corresponding stopper, twist lock is by lock body, lock core and the dead bolt that is fixed on the lock core are formed, and between lock body and the lock core pellet shot from a slingshot are housed, when key inserts lock core, pellet shot from a slingshot is headed in the lock body, key, lock core can drive dead bolt and rotate, and reach the purpose of unblanking, the spring that key pins is installed in the lock body under dialling is upspring, with the lock core location, dead bolt is blocked along last stopper by well lid, well lid can be locked, the position of corresponding lock core has lockhole on the well lid, after the well lid locking, lockhole is sealed up, prevented that the silt dirt from stopping up lockhole with vinyl cover.

Because adopted the relative two ends of well lid hinged along an end and well head in the above-mentioned solution, the other end is equipped with the structure of twist lock, can prevent effectively that well lid is stolen, the harm of avoiding the national wealth loss and causing for pedestrian and vehicular traffic thus.

Below in conjunction with drawings and Examples the utility model is described in further detail.

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

Fig. 2 is the sectional view of anti-stealing manhole cover shown in Figure 1 along the A-A line;

Fig. 3 is the structural representation of backset on twist lock and the well below the utility model anti-stealing manhole cover.

Fig. 4 is the structural representation of the utility model anti-stealing manhole cover twist lock.

Fig. 5 is the cut-away view of anti-stealing manhole cover twist lock lock shown in Figure 4 along the B-B line.

Fig. 6 is the structural representation of the utility model anti-stealing manhole cover twist lock key.

Fig. 7 is the structural representation of the utility model anti-stealing manhole cover lockhole cap.

At Fig. 1---in the structural representation shown in Figure 5, the two ends of well lid 1 are along last, one end and well head 2 are hinged by axle 4, twist lock 3 is housed below the other end, the position of corresponding twist lock 3 is provided with stopper 5 on the well 2, twist lock 3 is made of lock body 6, lock core 7 and the dead bolt 8 that is fixed on the lock core lower end, and lock core 7 is contained in the middle of the lock body 6, has through hole on the warp of lock body 6 and lock core 7.Lock core marble 9 and lock spring 10 and spring 11 are housed in the hole, with lead sealing aperture, the lock body outside are sealed at last.Lock body 6 by screw be fixed on well lid 1 below, the position of corresponding lock core 7 has lockhole 12 on the well lid, and it is corresponding with key bit that the upper end edge warp of lock core 7 has a groove 13, when unblanking well lid, insert lockhole 12 with key shown in Figure 6, key bar 14 heads into pellet shot from a slingshot 9 in the lock core 7, and pellet shot from a slingshot 9 heads into pellet shot from a slingshot 10 in the lock body 6, and key bit 15 is stuck in the groove 13 of lock core 7 upper ends, key handle 16, lock core 7 can be rotated, dead bolt 8 rotates thereupon, can reach the purpose of the well lid of unblanking.After locking well lid 1, in the shrinkage pool 18 on 17 insertions of the double wedge above the key plastic spiral lockhole cap shown in Figure 7, the rotation lock port lid can prevent that with on 12 cap seals of the lockhole on the well lid 1 the silt dirt from stopping up lockhole.

Claims (3)

1, a kind of anti-stealing manhole cover is made of well lid, well, twist lock, it is characterized in that; One end and well (2) on well lid (1) opposite end edge are hinged by axle (4), twist lock (3) are housed below the other end, and the position that well (2) go up corresponding twist lock (3) is provided with stopper (5).

2, anti-stealing manhole cover as claimed in claim 1, it is characterized in that: twist lock (3) is made of lock body (6) and lock core (7) and the dead bolt (8) that is fixed on the lock core (7), in lock body (6) and the lock core (7) pellet shot from a slingshot is housed, lock spring (10) can be upspring by spring (11), blocking lock core (7) can not rotate, lock core marble (9) can be got back to lock spring (10) top in the lock body (6) by the key effect, and lock core (7) drives dead bolt (8) with the key rotation and rotates.

3, anti-stealing manhole cover as claimed in claim 2 is characterized in that; The upper end of the lock core (7) of twist lock (3) has groove (13), and key bit is corresponding with groove (13), can snap in this groove.

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