CN2197428Y

CN2197428Y - Locking device for manhole cover

Info

Publication number: CN2197428Y
Application number: CN 94215145
Authority: CN
Inventors: 孙传富
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-19
Filing date: 1994-06-19
Publication date: 1995-05-17
Anticipated expiration: 2004-06-19

Abstract

The utility model relates to a novel theftproof device. A lock body of the theftproof device is mainly composed of a rotatable bolt tongue, a locking annular sheet, pins and an irregular raised head for a lock column; a special opening rotary handle of the theftproof device is composed of a cross transverse bar, a rotary straight bar, a sleeve barrel and an insertion hole for the irregular raised head, the rotatable bolt tongue is a locking functional component, and an encryption locking component is provided with the irregular raised head for the lock column, the insertion hole for the irregular raised head, a locking mouth of the locking annular sheet and the pins. The opening rotary handle is universal, can only be especially produced by factories, and is difficult to be imitated and replaced. The theftproof device has the advantages of convenient storage, portability, easy operation and strong theftproof and locking functions.

Description

Locking device for manhole cover

The utility model belongs to a kind of lock class of urban construction environmental protection articles for use, is exclusively used in the anti-theft locking of inspection shaft lid.

In the urban construction, water supply and draining, air feed, post and telecommunications, cable installation are embedded in undergroundly, must add inspection shaft for easy to maintenance, must add a cover on it, and the inspection shaft lid is not because of there being desirable anti-theft device, the time stolen losing arranged, the life-threatening person and traffic accident take place.Though the manhole cover anti-theft problem has been taked several measures, all undesirable: a kind of is to install chain locking additional, but often has chain to be cut off and lose cover plate; A kind of is to install the locking device that colludes unlatching with key on cover plate of manhole additional, colludes easily by imitated or substitute but open with key, still can lose cover plate; Also have a kind of cover plate lock, install password additional, though its theftproof is stronger, but a Gai Yisuo, one yard on a lid, numerous cover plates, numerous keys, keeping is carried, and sits in the right seat, and is all inconvenient, and involves great expense.

The purpose of this utility model is to install a kind of novel anti-theft locking device additional for various inspection shaft lids, this device, by comparison, simple in structure, design ingenious, Inspection shaft cover lock is decided device and is opened key, must be made specially by producer, and general personnel is difficult to copy, other object of more impossible usefulness substitutes, and cover generally more, " key " keeping, carry and use all easily, anti-theft security is strong.

The utility model is achieved like this, two subfacieses that cover center line at inspection shaft respectively install a lock body bolt tongue additional, and one of them is that its " L " shape cross bar " tongue bolt " of the motionless locking bolt tongue of " L " shape inserts well head flange flap beam bottom; And another is for can change the bolt tongue, it can be changeed the bolt tongue be rotated in shaft mouth side ring support bent cap bottom, promptly its cover plate firmly is locked on the well head flange, opens and get when covering, must use by a special-purpose rotary handle---" key ", insert from the pattern manhole cover lock open hole, rotation can be changeed the bolt tongue, makes its whiz flap beam, promptly opens cover lock, well lid is opened in operation routinely again.

This apparatus features is: simple in structure, Inspection shaft cover lock decides device and the unlatching key must general personnel be difficult to copy by special making of manufacturer, and other object of more impossible usefulness substitutes, versatility is good, " key " keeping, it is very convenient to carry, so anti-theft security is strong.

Structure of the present utility model is as shown in drawings: among the figure: ［ 1 ］, inspection shaft mouth flange and flap beam thereof, ［ 2 ］, cover plate of manhole, ［ 3 ］, be fixed on the pin of warding off in the lock housing, ［ 4 ］, support spring, ［ 5 ］, rotatable bolt tongue, ［ 6 ］, the plastic closure of open hole, ［ 7 ］, the seal cover opening groove, ［ 8 ］, lock housing, ［ 9 ］, locking ring plate, ［ 10 ］, but lock body rotary column, ［ 11 ］, lock abnormity plush copper, ［ 12 ］, cylindrical seat sleeve, ［ 13 ］, lock abnormity plush copper jack, ［ 14 ］, rotary handle cross cross bar, ［ 15 ］, seal cover is opened screw and is risen, ［ 16 ］ rotary handle straight-bar, ［ 17 ］, lock housing positioning and fixing screw, ［ 18 ］, motionless bolt tongue positioning and fixing screw, ［ 19 ］, the motionless bolt tongue of " L " shape, ［ 20 ］, bolt tongue rotary spacing pin, ［ 21 ］, lock body open hole, ［ 22 ］, the cylindrical seat of special-shaped plush copper bottom.Wherein ［ 12 ］-［ 15 ］ are the rotary handle member.

Below, in conjunction with the embodiments and accompanying drawing, describe structure of the present utility model in detail:

Soffit one of cover plate of manhole ［ 2 ］ center line, a motionless bolt tongue of " L " shape of positioning and fixing ［ 19 ］, by three screw positioning and fixing at the cover plate soffit, the hyoplastron of its " L " shape cross bar part carry over the center line extended line extend into shaft mouth side ring support bent cap ［ 1 ］ below, this head of locking cover plate.The long 50mm of the hyoplastron of this bolt tongue, wide 25mm, thick 12mm.The other end of cover plate ［ 2 ］ center line, the circular hole that the one φ 18.5mm that connects is arranged, can be described as lock body open hole ［ 21 ］, this hole upper semisection has been attacked screw, plastic closure ［ 6 ］ (φ M20 * 1.5) with opening groove hole threaded engagement is therewith arranged, and in order to seal this open hole ［ 6 ］, being fixedly connected with one below this hole ［ 6 ］ is the lock housing ［ 8 ］ at center with hole ［ 6 ］, (interior φ 28mm * 20-25mm), mend by three screw positioning and fixing at cover plate ［ 2 ］ soffit.There is a top to insert open hole ［ 21 ］ but interior lock body rotary column ［ 10 ］ (φ 16mm-9.4mm in the lock housing, long 45-60mm), the top of post ［ 10 ］ is the non-side of the lock abnormity plush copper non-circle of (long 6mm) its horizontal cross sectional geometry, be abnormity, cross section less than the cylindrical seat ［ 22 ］ of its underpart, (φ 16mm * 4mm) bottom is that its cross section also is the long column of the non-side's of non-circle special-shaped shape to cylindrical seat ［ 22 ］, this periphery is with a locking ring plate ［ 9 ］ that lock-joint is arranged, but the shape of cross section of the special-shaped right cylinder of this ring plate cylindrical φ its core hole of 27.4mm and lock body rotary column ［ 10 ］ hypomere is identical, locking ring plate ［ 9 ］ is enclosed within its cylindrical, can slide by easy on and off, ring plate ［ 9 ］, the spring ［ 4 ］ that is enclosed within this special-shaped right cylinder periphery is supported, this spring ［ 4 ］ is located on the lower shoe of lock housing ［ 8 ］, there is the circular hole of a φ 10.3mm in the lower shoe central authorities of lock housing ［ 8 ］, contact portion attenuates but lock body rotary column ［ 10 ］ is gone to the bottom therewith, become cylindrical by abnormity, pass the circular hole of these base plate central authorities, stretch out outside the base plate, and circular hole is slidingly matched therewith.On but the lock body rotary column stretches out end face outside the base plate, firmly connect a bolt tongue ［ 5 ］, the long 50mm of this bolt tongue, wide 25mm, thick 12mm, this bolt tongue is with changeing bolt ［ 10 ］ rotation, when this bolt tongue ［ 5 ］ is rotated to shaft mouth side ring support bent cap ［ 1 ］ below, with cover plate ［ 2 ］ when center line is equidirectional, promptly with the motionless bolt tongue of " L " shape ［ 19 ］, cover plate ［ 2 ］ secure lock on the well head flange.Soffit at lock housing ［ 8 ］ base plate also has a projection, dead bolt rotary stopper piece ［ 20 ］, when rotating the unlatching handle by hand, drive bolt tongue ［ 5 ］ rotation, bolt tongue ［ 5 ］ strikes limited block ［ 20 ］, and the vibrations feel is promptly arranged, and that promptly knows is rotated in place, be convenient to rotary manipulation, this rotatable bolt tongue ［ 5 ］ is the lock function member of lock body.Upper inside wall in lock housing ［ 8 ］, also have one to protrude fixing pin ［ 3 ］ (φ 6mm * 3mm), just in time aim at and be inserted in the lock-joint by the locking ring plate ［ 9 ］ of spring ［ 4 ］ jacking, as not descending pressing spring to make ring plate ［ 9 ］ thus move down and make its lock-joint break away from pin ［ 3 ］, ring plate ［ 9 ］ state that just can not go out of lock then, can't left rotation and right rotation, also be " locked " and can not rotate thereby can change bolt together with lock body, this is an encryption lock.

This locking device, outside cover lock, a rotary handle that is used for opening this locking device of sealing is arranged specially, it is by swing handle+word cross bar ［ 14 ］ (φ 6mm * 80mm), swing handle straight-bar ［ 16 ］ (φ 8-12mm, long 60mm) and garden cylindricality cover for seat tube ［ 12 ］ form, on a termination of swing handle cross cross bar, also have a flat mouthful of screw that is used for rotarily opening plastic closure ［ 6 ］ to play ［ 15 ］.The cylindrical shell wall thickness 1-0.8mm of garden cylindricality cover for seat tube ［ 12 ］, internal diameter 16mm, dark 10-20mm, also have one vertically to be deep into the lock abnormity plush copper jack ［ 13 ］ of diapire the inside, top 7mm on its bottom surface, top, the cross sectional shape of the cross sectional shape of this abnormity jack ［ 13 ］ and lock abnormity plush copper ［ 11 ］ is identical, so that plush copper ［ 11 ］ can be inserted jack ［ 13 ］ the inside, and can slide up and down therein, this promptly is the main encryption lock member couple of this locking device in fact.

The method of operating that this locking device is opened with sealing is such: open plastic closure ［ 6 ］ on the lock body open hole ［ 21 ］ with swing handle cross bar termination bottle opener ［ 15 ］, in the garden cylindricality seat tube patchhole ［ 21 ］ with rotary handle, entangle garden cylindricality seat ［ 22 ］, vertical depression, compressing locking ring plate ［ 9 ］, move down, make its lock-joint break away from pin ［ 3 ］ and free locking dress attitude, continue again to press down, make the plush copper jack ［ 13 ］ on the rotary handle entangle lock abnormity plush copper ［ 11 ］, press down and entangle firm, the rotary handle of can exerting oneself rotates bolt tongue ［ 5 ］, carries out the unlatching and the sealing lock operation of cover plate.

Claims

1, a kind of by changeing bolt tongue [15], the motionless bolt tongue of " L " shape [19], lock housing [8], locking ring plate [9], pin [3], support spring [4] but, the inspection shaft lid novel anti-theft formed of lock body rotary column [10], lock abnormity plush copper [11], garden cylindricality seat [22], lock body open hole [21] open hole plastic closure [6] and garden cylindricality cover for seat tube [12], lock abnormity plush copper patchhole [13], rotary handle straight-bar [16], rotary handle cross cross bar [14] locks device and special opening rotary handle thereof, it is characterized in that:

A, lock body open hole [21] connect cover plate of manhole, and its epimere has a plastic closure [6] with its threaded engagement,

Below b, the lock body open hole [21], fixedly connected lock housing [8], but the lock body rotary column [10] that fuses is arranged in it,

But stretch out on the end face of outside, hole, central garden on lock housing [8] lower shoe c, lock body rotary column [10] lower end, and firmly connecting lock body can change bolt tongue [5],

But be with a locking ring plate [9] by support spring [4] jacking below the garden cylindricality seat [22] on d, the lock body rotary column [10],

E, be positioned at the other end of cover plate [2] center line on the lock body open hole [21], near the soffit on its limit mouth, fixedly connected one " L " the motionless bolt tongue of shape [19], the horizontal tongue of its " L " shape along the center line extended line extend into shaft mouth side ring support bent cap [1] below locking

F, special-purpose rotary handle, from top to bottom, rotary handle cross cross bar [14], rotation straight-bar [16], the garden cylindricality cover for seat tube [12] that has flat mouthful screw to play [15] by rod end formed successively.

2, inspection shaft lid novel anti-theft device as claimed in claim 1 is characterized in that: but the top of lock body rotary column ［ 10 ］ is lock abnormity plush copper ［ 11 ］ and the garden cylindricality seat ［ 22 ］ below it.

3, inspection shaft lid novel anti-theft device as claimed in claim 1, it is characterized in that: but lock body rotary column ［ 10 ］ is abnormity at garden cylindricality seat ［ 22 ］ with the cylinder shape of cross section of lower part, identical with locking ring plate ［ 9 ］ the center hole shape that is enclosed within its periphery and be slidingly matched.

4, inspection shaft lid novel anti-theft device as claimed in claim 1, it is characterized in that, there is the lock abnormity plush copper jack ［ 13 ］ that is deep into the base plate the inside inner tip bottom surface of special opening rotary handle garden cylindricality cover for seat tube ［ 12 ］, the shape of cross section of its shape of cross section and lock abnormity plush copper ［ 11 ］ is identical, and its jack ［ 13 ］ can entangle special-shaped plush copper ［ 11 ］ fully and slide up and down.

5, inspection shaft lid novel anti-theft device as claimed in claim 1, it is characterized in that: special opening rotary handle garden cylindrical sleeve ［ 12 ］, its outer garden diameter is less than lock body open hole internal diameter, garden diameter is greater than garden cylindricality seat ［ 22 ］ diameter in it, can inject in the lock body open hole ［ 21 ］, entangle garden cylindricality seat ［ 22 ］, press down and carry, slide arbitrarily.

6, inspection shaft lid novel anti-theft device as claimed in claim 1, it is characterized in that: the outer garden diameter of the garden cylindricality cover for seat tube ［ 12 ］ of special opening rotary handle is less than the outer garden diameter of locking ring plate ［ 9 ］, can press down and cause this locking ring plate ［ 9 ］ to move down, its lock-joint is glided break away from the pin ［ 3 ］ that protrudes on lock housing ［ 8 ］ inwall, and free lock-out state.

7, inspection shaft as claimed in claim 1 lid novel anti-theft device is characterized in that: but lock body rotary column ［ 10 ］ contact lock housing ［ 8 ］ lower shoe place is become thinner garden shape post and is slidingly matched with hole, lock housing lower shoe central authorities perforation garden by hetermorphiscal column.