CN204266251U - A kind of anti-stealing manhole cover - Google Patents

Abstract

The utility model relates to a kind of anti-stealing manhole cover, covers install anti-theft device additional at open well, and this device comprises private key, two cleeks, a locking device and a slip hammerlock circle distribution below well lid; During unlatching, use private key to be pressed in installing hole, three inner lock cores are pressed onto respectively can enable possition, then makes it retreat with the poke hole stirred on slip hammerlock, realizes opening; When closing slip hammerlock pushed the position from the most limit of locking device, lock core ejects installing hole, clamping slip hammerlock, and the inner edge of well lid packing ring is blocked in the outer end of the hammerlock that now slides, and realizes well lid locking.The utility model structure is simple, only has moving sets secondary without spin, and installation, unlatching and locking mode are simple, reliably.Only having when three lock cores all reach enable possition could open manhole cover, and theftproof performance is good, in order to strengthen theftproof performance, can also establish several installing hole more; During closed condition, lock core automatic spring blocks open keyhole, prevents foreign matter from entering well lid.

Description

A kind of anti-stealing manhole cover

Technical field

The utility model relates to a kind of anti-stealing manhole cover.

Background technology

Main method and the device of current solution manhole cover anti-theft have: (1) is using the improvement on material, as use cheap, do not have the nonmetals of much recovery values to replace metal material to reach antitheft object, but its shortcoming is intensity is not so good as the height of metal material, damping property does not have cast iron good, and aging speed is fast, because well lid does not have snap close, occur that heavy rain flood is easily flushed away loss, cause potential safety hazard; (2) use common lockset to pin inspection well cover, because well lid is placed horizontally at ground, common lockset keyhole easily enters foreign matter and blocks, thus causes it to open, and its use is subject to larger restriction; (3) special anti-theft device is used, these devices have locking bayonet type, locking hinge coordinated type etc., its maximum common ground is that most structure is comparatively complicated and ubiquity rotarily opens link, revolute easily lost efficacy when entering foreign matter or material corrosion, occur rotating dumb or stuck phenomenon, also make it use to a certain extent limited.Therefore, all there is larger shortcoming in above-mentioned main stream approach, very large restriction is had in current use, so a large amount of plain cast iron inspection well cover still not adding anti-theft device adopted in current city, in recent years because of its easy stolen loss, lose the casualties that causes and other related accidents of common occurrence, and consequence is all more serious.

Summary of the invention

In order to solve well lid to possess antitheft, durable, be easy to open and there is the combination properties such as good intensity and damping property, to overcome the shortcoming existing for above-mentioned existing main flow theft preventing method, the utility model proposes a kind of anti-stealing manhole cover.

The technical solution of the utility model is: a kind of anti-stealing manhole cover, comprise well lid, it is characterized in that: also comprise the private key arranged separately, two cleeks, locking devices, two cleeks and locking device are circumferentially arranged on below well lid respectively, and two cleeks can hook the inner edge of well lid packing ring;

The structure of described locking device is: comprise lock housing, and lock housing inner chamber is placed with the first lock body, and the first lock body and lock housing inner chamber are slidably matched, and the second lock body is bolted in lock housing by second; First lock body is vertically installed with multiple installing hole, and on the second lock body, correspondence is provided with locating hole, and be placed with spring in each installing hole, spring upper end is provided with lock core, and lock core head can eject from locating hole; Lock case sidewalls is provided with empty fluting, and the inner of a slip hammerlock is fixedly connected with the first lock body through the sky fluting of lock case sidewalls, and the outer end of slip hammerlock is corresponding with the inner edge of well lid packing ring to be arranged, and can be stuck in the inner edge of well lid packing ring; Slip hammerlock is also set with holder, and holder is bolted to below well lid by first; Described lock housing is bolted to below well lid by the 3rd;

Described slip hammerlock is provided with poke hole, and on well lid, correspondence is provided with and stirs groove; Described well lid is coaxially provided with private key patchhole with locating hole;

The structure of described private key: comprise key body, key body is provided with multiple key insert head corresponding with lock core.

That the quantity of described installing hole is 3-6, or more to the further improvement of technique scheme; The quantity of installing hole is more, and antitheft coefficient is better.

That the outer end of described slip hammerlock is spade mouth to the further improvement of technique scheme.

The beneficial effects of the utility model: during locking, whole well lid is first tilted to put into well lid packing ring, keep flat up after making two cleeks catch on packing ring inner edge, the poke hole stirred on slip hammerlock with finger is to well lid boundary slip, dynamic first lock body of slide lock arm straps moves together, when installing hole and second lock body of the first lock body and the key hand-hole of well lid communicate, and lock core automatic spring, now slip hammerlock will be locked in place, and well lid also completes locking simultaneously; If think open manhole cover, then need to insert the private key matched and each lock core is pressed onto respectively enable possition (now lock core top is positioned on the interface of the first lock body and the second lock body), then stir slip hammerlock and move backward, can well lid be opened.The feature of this lock is, the face that the second lock body has multiple height different at core bore place respectively, and the contact surface of the second lock body and the first lock body is processed into the face matched with the first lock body; By changing the first lock body and the replaceable password of unblanking of the second lock body; Or add more lock core hole to strengthen antitheft coefficient; The spade mouth that the outer end edges of slip hammerlock matches with packing ring inner edge when being designed to locking just, makes locking more closely, reliably.After unlatching, together position of mounting hole is recessed because lock core is pressed into the first lock body inside, even if be placed in side unmanned after opening, also do not worry that someone can crack out password by the degree of depth of instrument connection, the utility model possesses antitheft, durable, to be easy to unlatching feature.

Accompanying drawing explanation

Fig. 1 is the utility model decomposition texture schematic diagram;

Fig. 2 is A portion enlarged drawing in Fig. 1;

Fig. 3 is the enlarged drawing of 4 private keys in Fig. 1;

Fig. 4 is the utility model locking states figure;

Fig. 5 is along D-D sectional drawing (enlarged drawing) in Fig. 4;

Fig. 6 is the private key insert state figure based on Fig. 5;

Fig. 7 is B portion enlarged drawing in Fig. 3;

Fig. 8 is the utility model opening figure;

Fig. 9 is C portion enlarged drawing in Fig. 8.

Shown in figure: 1 is well lid packing ring, and 2 is cleeks, and 3 is well lids, and 4 is private keys, and 5 is slip hammerlocks, 6 is holders, and 7 is first bolts, and 8 is lock housings, and 9 is second bolts, and 10 is first lock bodies, 11 is springs, and 12 is lock cores, and 13 is second lock bodies, and 14 is the 3rd bolts; 15 is stir groove, and 16 is poke holes, and 17 is empty flutings, and 18 is key insertion holes, and 19 is installing holes, and 20 is locating holes.

Detailed description of the invention

As shown in Figure 1, Figure 2, a kind of anti-stealing manhole cover shown in Fig. 4, Fig. 5, Fig. 7, private key 4, two cleeks 2, locking devices of comprise well lid 3, arranging separately, two cleeks 2 and locking device are circumferentially arranged on below well lid 3 respectively, and two cleeks 2 can hook the inner edge of well lid packing ring 1;

The structure of described locking device is: comprise lock housing 8, and lock housing 8 inner chamber is placed with the first lock body 10, first lock body 10 and is slidably matched with lock housing 8 inner chamber, and the second lock body 13 is fixed in lock housing 8 by the second bolt 9; First lock body 10 is vertically installed with correspondence on three installing holes 19, second lock body 13 and is provided with locating hole 20, be placed with spring 11 in each installing hole 19, spring upper end is provided with lock core 12, and lock core 12 head can eject from locating hole 20; The inner that lock housing 8 sidewall is provided with empty fluting 17, slip hammerlock 5 is fixedly connected with the first lock body 10 through the sky fluting 17 of lock housing 8 sidewall, and the outer end of slip hammerlock 5 is corresponding with the inner edge of well lid packing ring 1 to be arranged, and can be stuck in the inner edge of well lid packing ring 1; Slip hammerlock 5 is also set with holder 6, and holder 6 is fixed on below well lid 3 by the first bolt 7; Described lock housing 8 is fixed on below well lid by the 3rd bolt 14;

Described slip hammerlock 5 is provided with poke hole 16, and on well lid 3, correspondence is provided with and stirs groove 15; Described well lid 3 is coaxially provided with private key patchhole 18 with locating hole;

As shown in Figure 3, the structure of described private key: comprise key body 4-1, key body is provided with three key insert head 4-2s corresponding with lock core.

As shown in Figure 6, after private key 4 is inserted, lock core 12 departs from the second lock body 13, first lock body 10 and slip hammerlock 5 can be driven to slide along lock housing 8 inner chamber together.

Shown in composition graphs 6, Fig. 8, Fig. 9, operating principle of the present utility model is described: during locking, first tilt to put into well lid packing ring 1 by whole well lid 3, keep flat up after making two cleeks 2 catch on packing ring inner edge, the poke hole 16 stirred on slip hammerlock 5 with finger is to well lid 3 boundary slip; Slip hammerlock 5 drives the first lock body 10 to move together, and when installing hole 19 and second lock body 13 of the first lock body 10 and the key hand-hole 18 of well lid 3 communicate, lock core 11 automatic spring, now slip hammerlock 5 will be locked in place, and well lid also completes locking simultaneously.If think open manhole cover, then need to insert the private key 4 matched and each lock core is pressed onto respectively enable possition (lock core top is positioned on the interface of the first lock body and the second lock body), then stir slip hammerlock 5 and move backward, can well lid be opened.

The feature of this lock is, the face that second lock body 13 has multiple height different at lock core 11 place respectively, and the contact surface of the second lock body 13 and the first lock body 11 is processed into the face matched with the first lock body, by changing the first lock body 11 and the replaceable password of unblanking of the second lock body 13; Adopt the structure of three locating holes 20 in detailed description of the invention, also can add more locating hole to strengthen antitheft coefficient.

The spade mouth that the outer end edges of slip hammerlock 5 matches with well lid packing ring 1 inner edge when being designed to locking just, makes locking more closely, reliably.After unlatching, together position of mounting hole is recessed because lock core is pressed into the first lock body inside, even if be placed in side unmanned after opening, also do not worry that someone can crack out password by the degree of depth of instrument connection, the utility model possesses antitheft, durable, to be easy to unlatching feature.

Claims (3)

1. an anti-stealing manhole cover, comprises well lid, it is characterized in that: also comprise the private key arranged separately, two cleeks, locking devices, two cleeks and locking device are circumferentially arranged on below well lid respectively, and two cleeks can hook the inner edge of well lid packing ring;

The structure of described locking device is: comprise lock housing, and lock housing inner chamber is placed with the first lock body, and the first lock body and lock housing inner chamber are slidably matched, and the second lock body is bolted in lock housing by second; First lock body is vertically installed with multiple installing hole, and on the second lock body, correspondence is provided with locating hole, and be placed with spring in each installing hole, spring upper end is provided with lock core, and lock core head can eject from locating hole; Lock case sidewalls is provided with empty fluting, and the inner of a slip hammerlock is fixedly connected with the first lock body through the sky fluting of lock case sidewalls, and the outer end of slip hammerlock is corresponding with the inner edge of well lid packing ring to be arranged, and can be stuck in the inner edge of well lid packing ring; Slip hammerlock is also set with holder, and holder is bolted to below well lid by first; Described lock housing is bolted to below well lid by the 3rd;

Described slip hammerlock is provided with poke hole, and on well lid, correspondence is provided with and stirs groove; Described well lid is coaxially provided with private key patchhole with locating hole;

The structure of described private key: comprise key body, key body is provided with multiple key insert head corresponding with lock core.

2. a kind of anti-stealing manhole cover according to claim 1, is characterized in that: the quantity of described installing hole is 3-6.

3. a kind of anti-stealing manhole cover according to claim 1, is characterized in that: the outer end of described slip hammerlock is spade mouth.