CN2777137Y - Means for locking cover of inspection well - Google Patents

Abstract

The utility model relates to a manhole cover lock which is composed of a manhole cover body and an anti-theft component. The utility model is characterized in that the utility model comprises a lock and a key matched with the lock, wherein a lock core and a bolt are arranged in a lock case of the lock, and non-standard threads are arranged in a hollow cylinder of the lock core. The upper end and the lower end of the hollow cylinder are respectively provided with a square body, and an upper square body and a lower square body are staggered for 90 DEG, and are integrally arranged a lock bucket integrally connected with the bolt. The utility model has the advantages of reasonable design, reliable locking, simple structure, obvious effect, low cost and convenient use. The manhole cover lock only needs the matching key to be unlocked, and does not need other auxiliary tools. Therefore, the unlocking and the locking are both convenient.

Description

Inspection shaft cover lock closes device

Technical field

The utility model relates to Inspection shaft cover lock and closes tool, and particularly a kind of Inspection shaft cover lock closes device.

Background technology

At present, large, medium and small urban Underground pipeline gathers, and sewage, rainwater, tap water, natural gas line, communication cable, optical cable are arranged.Repair maintenance for the ease of picking up, be provided with many inspection shaft mouths and lid on the ground.Inspection shaft lid manufacturing materials mainly contains cast iron, three condensation materials, cement making, higher by three condensation materials and cement inspection shaft lid compressive strength, rapid wear, therefore, what municipal highway mainly used is cast iron inspection shaft lid, but this inspection shaft drowning has anti-theft measure, often stolen, stay trap, cause car crash by the lawless person, bring about great losses for the people's life, property, cause bad to society with influence.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned shortcoming, provides a kind of reasonable in design, and the locking reliable structure is simple, and cost is low, and the convenient a kind of Inspection shaft cover lock that uses closes device.

Technology of the present utility model is to realize like this

A kind of Inspection shaft cover lock closes device inspection shaft lid and antitheft parts are formed, and it is characterized in that comprising locking device and the key that matches with the locking device, and the lock box of its locking device is interior so that lock core to be arranged.Dead bolt is provided with nonstandard screw thread in the hollow cylinder of lock core, its upper and lower side is respectively established a square body, goes up square body and becomes 90 ° dislocation with time square body, and be that an integral body places in the lock hopper that is connected with dead bolt for one.

The key of described locking device is made up of box spanner and the nonstandard screw rod of rocking handle.

The lock core plug is arranged on the described lock core.

Operating principle

Lock hopper on the dead bolt is hollow, square, and the lower end of lock core also is a square, through inspection shaft lid, in the bucket of dead bolt, be subjected under the lock core lock hopper restriction and can not rotating lock tongue.The square body of lock core upper end is subjected to the restriction of inspection shaft lid to become 90 ° dislocation with the square body of lower end.Middle is circular, place lock hopper during locking, the upper end of the hollow cylinder of lock core has the square hole of square body and inspection shaft lid to combine closely and is subjected to the inspection shaft lid to limit and can not rotate, one movable lock pin is arranged on the cylinder in lock core stage casing, because the center of gravity off normal, the upper end is outward-dipping naturally, withstand inspection shaft cover make lock core can not on carry, nonstandard screw thread is arranged in the lock core, have only with matched key and just can open.Box spanner just with lock core on square body be nested, the nonstandard screw rod of rotation crank moves down along the lock core internal thread, move to nearly bottom in the lock core; the nonstandard screw rod of rocking handle forces the lock pin in the lock core to leave the inspection shaft lid, no longer withstand the inspection shaft lid and return and be hidden in the wall of lock core, carry and shake the nonstandard screw rod of handle; extract the last square body in the lock core; the rotational sleeve spanner, drive the breach that lock hopper, dead bolt are left well seat mouth, just can raise inspection shaft and cover.

Beneficial effect

The utility model is reasonable in design, locks reliably, simple in structure, and effect is obvious, and cost is low, and is easy to use, when opening, only needs one matched key, does not need other aid, therefore, unlatching and lock all very convenient.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is Fig. 1 upward view and key structure combining schematic diagram.

Fig. 3 is the nonstandard screw rod of the rocking handle structural representation that combines with lock box.

Fig. 4 is a lock core structure for amplifying schematic diagram.

Among the figure: 1, lock box; 2, lock core; 2-1, last square body; 2-2, following square body; 2-3, hollow cylinder; 2-4, lock pin; 3, dead bolt; 3-1, lock hopper; 4, lock core plug; 5, the nonstandard screw rod of rocking handle; 6, box spanner; 7, inspection shaft lid.

The specific embodiment

As Fig. 1～shown in Figure 4, a kind of Inspection shaft cover lock closes device inspection shaft lid and antitheft parts are formed, comprise locking device and the key that matches with the locking device, in the lock box 1 of its locking device lock core 2 is arranged, dead bolt 3 is provided with nonstandard screw thread in the hollow cylinder 2-3 of lock core 2, and its upper and lower side is respectively established a square body, go up square body 2-1 and become 90 ° dislocation, and be that an integral body places in the lock hopper 3-1 that is connected with dead bolt 3 for one with time square body 2-2.Lock core plug 4 is arranged on the lock core 2.

As Fig. 1～shown in Figure 4, the lock hopper 3-1 on the dead bolt 3 is hollow, square body, and the lower end of lock core 2 also is square body, through inspection shaft lid 7, in the bucket of dead bolt 3, lock core be subjected to for 2 times lock hopper 3-1 restriction and can not rotating lock tongue 3.The upper end of the hollow cylinder 2-3 of lock core 2 has square body to be subjected to the restriction of inspection shaft lid 7 to become 90 ° dislocation with the square body of lower end.Middle is circular, place lock hopper 3-1 during locking, the square hole of the square body of the upper end of lock core 2 and inspection shaft lid 7 is combined closely and is subjected to 7 restrictions of inspection shaft lid and can not rotates, one movable lock pin 2-4 is arranged on the cylinder in lock core 2 stage casings, because the center of gravity off normal, the upper end is outward-dipping naturally, withstand inspection shaft cover 7 make lock core 2 can not on carry, nonstandard screw thread is arranged in the lock core 2, have only with matched key and just can open.Box spanner 6 just is nested with lock core 2 upper ends pros bodies, the nonstandard screw rod 5 of rotation crank moves down along lock core 2 internal threads, move to nearly bottoms in the lock core 2; the nonstandard screw rod 5 of rocking handle forces the lock pin 2-4 in the lock core 2 to leave inspection shaft lid 7, no longer withstand inspection shaft lid 7 and return and be hidden in the wall of lock core 2, carry and shake the nonstandard screw rod 5 of handle; extract the last square body in the lock core 2; rotational sleeve spanner 6, drive the breach that lock hopper 3-1, dead bolt 3 leave well seat mouth, just can raise inspection shaft and cover 7.

Claims (3)

1, a kind of Inspection shaft cover lock closes device inspection shaft lid and antitheft parts composition, it is characterized in that comprising locking device and the key that matches with the locking device, lock core (2) is arranged in the lock box of its locking device (1), dead bolt (3), be provided with nonstandard screw thread in the hollow cylinder (2-3) of lock core (2), its upper and lower side is respectively established a square body, goes up square body (2-1) and becomes 90 ° dislocation with time square body (2-2), and be that an integral body places in the lock hopper (3-1) that is connected with dead bolt (3) for one.

2, Inspection shaft cover lock according to claim 1 closes device, it is characterized in that the key that matches with the locking device is made up of box spanner (6) and the nonstandard screw rod of rocking handle (5).

3, Inspection shaft cover lock according to claim 1 closes device, and it is characterized in that has lock core plug (4) on the lock core (2).

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