CN2858778Y

CN2858778Y - Theft-proof tilting resistance manhole cover

Info

Publication number: CN2858778Y
Application number: CN 200520024804
Authority: CN
Inventors: 李建峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-06
Filing date: 2005-09-06
Publication date: 2007-01-17
Anticipated expiration: 2015-09-06

Abstract

The utility model discloses a theft-proof tilting resistance manhole cover which can not distinguishing difference from other normal manhole cover viewed on top once the tilting resistance manhole cover is installed. In the tilting resistance manhole cover, a locking device and a latch hook corresponding to the position of the locking device are arranged beneath the manhole cover to perform unlocking and locking by a special tool via an opening hole of the manhole cover. The locking device comprises a locking spindle with an opening rod and an opening location notch, and an unlocking crank arm covering a locating opening plate. The utility model can prevent tilting of the manhole cover with hidden theft-proof function, accordingly, only trained operator can find the unlocking position and open the manhole cover.

Description

Antitheft anti-overturn well lid

Technical field

The utility model relates to the overburden of a kind of road inspection well or similar item, specifically a kind of antitheft anti-overturn well lid.

Background technology

In recent years, the stolen phenomenon of well lid of the road inspection well of departments such as the power supply on the road surface, municipal administration, heating power, telecommunications is very serious, also have some well lids by passing vehicle pressure aside, annual casualty accident and the property loss that does not have well lid to cause because of the manhole on the road is very serious.Therefore people have found out a lot of ways and have prevented the robbed or burgled of well lid, and topmost idea is to add a lock on well lid, and what this lock had links to each other with gear or other mechanical mechanism, and independently key hole and lock core are arranged, and need open with the key of special use.The shortcoming of this well lid is because pattern manhole cover lock inevitably gets rusty easily, and also be difficult to open even the lock core of the pattern manhole cover lock after getting rusty inserts key, and keyhole is blocked by earth easily, wants to open very difficulty.

Summary of the invention

No matter the purpose of this utility model is to provide a kind of use how long can both open very easily, and has well lid antitheft, anti-vehicle pressure function.

The utility model is achieved in that it comprises well lid, outer ring, locking device; Be attached with locking device at the soffit of well lid near outer rim place, the well lid open hole of well lid, and on the radially corresponding position of locking device the latch hook that matches with the outer ring be installed.

Locking device comprises locked axle and shuts cranks arm; Locked axle is installed between base and the cover plate, base is fixed on the soffit of well lid, cover plate is placed on the base, inside between base and the cover plate is a square chute, be fixed with the square limiting plate on the locked axle, square chute between square limiting plate and base and the cover plate is slidingly matched, in the square chute and on the locked axle, between square limiting plate and the square runner wall, settle a spring, locked axle is corresponding to be shut on the cylindrical of an end of cranking arm fixed installation one and opens driving lever, has the unlatching locating slot at the another side of the locked axle relative with opening driving lever; Shutting cranks arm is installed on the well lid by bearing pin, shutting cranks arm goes up suit one location-plate of unblanking, the location-plate of unblanking is corresponding with the size that shuts the unlatching locating slot on cranking arm, the location-plate of unblanking also is connected with the base of locking device by bearing pin, is equipped with on this bearing pin and compresses the torsion spring that the location-plate of unblanking is used.

When locking device and latch hook were installed, making had the nearly well lid open hole of a side joint of opening driving lever on the locking device, open on the well lid between driving lever and the well lid open hole antitheft baffle plate is installed.

Technological progress of the present utility model is, the lock of this kind well lid is a kind of simple frame for movement, when unblanking is directly to stir locked axle with key, if the material that locking device is not easy to get rusty with stainless steel etc., even through not using for many years, also can easily lock be pushed aside; Because it does not have lock core, so even key can not insert or insert the phenomenon that can not rotate after just not having corrosion, though it also must be opened with private key, but since locking device be mounted in well lid below, can't see on the road surface, the people through training is not difficult to find the position of lock, even find the position of lock at all, the also position that can not find key to insert, the unprofessional person is difficult to steal well lid as well lid not being smashed; And the outward appearance of this kind well lid and common well lid are just the same, can not recognize common well lid or anti-stealing manhole cover from the outside; Since locking device and latch hook all be stuck in well the outer ring below, well lid, outer ring and locked axle, latch hook are in the same place with regard to engaged, can prevent the upset of well lid.

The square limiting plate and the square chute on the base that are fixed on the locked axle cooperate, guaranteed that locked axle can not rotate, make and open driving lever and be in a fixing position, open location-plate and open locating slot and also can correctly cooperate all the time and block handled easily personnel proper operation.

The specific embodiment

Fig. 1 is the theory structure schematic diagram of locking device of the present utility model, and Fig. 2 is a position view of the present utility model, and Fig. 3 is the generalized section of Fig. 2.Wherein 1 is locking device, and 2 is the base set bolt, and 3 is locked axle spring, and 4 for opening driving lever, 5 crank arm for shutting, and 6 is locked axle, and 7 for opening the location-plate axle, 8 is torsion spring, and 9 for opening locating slot, and 10 for opening location-plate, 12 are the locating shaft of cranking arm, and 13 is antitheft baffle plate, and 14 is limiting plate, 21 is the locking device cover plate, and 22 is latch hook, and 23 is the outer ring, 25 is well lid, and 27 is the locking device base, and 31 is the well lid open hole.

Below in conjunction with accompanying drawing the utility model is done to describe in further detail,

Present embodiment comprises well lid 25, outer ring 23, locking device 1 and latch hook 22; Locking device 1 and latch hook 22 are fixedly mounted on the bottom surface of well lid 1, and near the outer rim place of well lid 25, can with outer ring 23 interlocks; Locking device 1 and latch hook 22 symmetric arrangement on the diametric(al) of well lid 25; Locking device 1 be installed in well lid open hole 31 near.

Locking device 1 comprises locked axle 6 and shuts cranks arm 5; Locked axle 6 is installed between locking device base 27 and the locking device cover plate 21, and base 27 is fixed on by base set bolt 2 on the bottom surface of well lid 25, and cover plate 21 is placed on the base 27, and the inside between base 27 and the cover plate 21 forms a square chute space; Be fixed with square limiting plate 14 on the locked axle 6, the square chute between square limiting plate 14 and base 27 and the cover plate 21 is slidingly matched; Settle a spring 3 in the square chute, spring 3 is enclosed within on the locked axle 6, is compressed between the antetheca of square limiting plate 14 and square chute; Locked axle 6 correspondences shut unlatching driving lever 4 of fixed installation on the cylindrical of 5 the end of cranking arm, and have at the another side of the locked axle 6 relative with opening driving lever 4 and open locating slot 9; Shutting cranks arm 5 is installed on the well lid 25 by the locating shaft 12 of cranking arm, shut on 5 the end elongated portion of cranking arm one of the suit location-plate 10 of unblanking, the location-plate 10 of unblanking can match with the size that shuts the unlatching locating slot 9 on 5 of cranking arm, the position can be corresponding, the location-plate 10 of unblanking also is connected with the base 27 of locking device by opening location-plate axle 7, this opens on location-plate axle 7 and goes back torsion spring 8 of suit, and torsion spring 8 location-plate 10 of will unblanking compresses.

When locking device 1 and latch hook 22 are installed, make the nearly well lid open hole 31 of a side joint of the unlatching driving lever 4 on the locking device 1, open on the well lid between driving lever 4 and the well lid open hole 31 antitheft baffle plate 13 is installed.

The utility model is the same with common well lid from the road surface, and when well lid 25 covered, the end that latch hook 22 at first will be installed put down, and made it hook outer ring 23, thereafter well lid 25 was set level; In the well lid open hole 31 of the end that locking device 1 is housed, special special tool is inserted in the well lid, stir to shut to the anticlockwise special tool and crank arm 5, make and open location-plate 10 disengaging unlatching locating slots 9, locked axle 6 ejects under spring 3 effects, be stuck with outer ring 23, realize antitheft anti-overturn function.

And unlatching of the present utility model, still need to use special special tool just can open, being about to special tool opens hole 31 from well lid and puts into, make the arm of dialling of special tool align the driving lever 4 of unblanking, after dextrorotation, stir and open driving lever 4, locked axle 6 is moved inward, when the position of the unlatching locating slot 9 slide-open location-plates 10 on the locked axle 6, open location-plate 10 and under the effect of torsion spring 8, snap in and open in the locating slot 9, promptly open successfully.

Claims

1, antitheft anti-overturn well lid comprises well lid, outer ring, locking device, it is characterized in that: near the locking device that is attached with of the outer rim place of well lid, well lid open hole, and on the radially corresponding position of locking device latch hook is installed below well lid.

2, antitheft anti-overturn well lid according to claim 1, it is characterized in that described locking device comprises locked axle and shuts cranks arm, locked axle is installed between the base and cover plate that is fixedly connected on the well lid inner surface, inside between base and the cover plate is a square chute, locked axle is positioned on the part of square chute and is fixed with the square limiting plate that is slidingly matched with the square chute, settle a spring in the square chute and on the locked axle, the corresponding cylindrical that shuts an end of cranking arm of locked axle is provided with one and opens driving lever and have the unlatching locating slot; Shutting cranks arm is installed on the well lid by bearing pin, shutting cranks arm goes up suit one location-plate of unblanking, the location-plate of unblanking is corresponding with the size of opening locating slot, and the location-plate of unblanking also is connected with the base of locking device by bearing pin, is equipped with on this bearing pin and compresses the spring that the location-plate of unblanking is used.

3, antitheft anti-overturn well lid according to claim 2 is characterized in that described unlatching driving lever is positioned at the side near the well lid open hole, opens on the well lid between driving lever and the well lid open hole antitheft baffle plate is installed.