CN2679248Y

CN2679248Y - Antitheft mamhole cover

Info

Publication number: CN2679248Y
Application number: CN 03255052
Authority: CN
Inventors: 徐胜唐
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-07
Filing date: 2003-08-07
Publication date: 2005-02-16
Anticipated expiration: 2013-08-07

Abstract

The utility model discloses an antitheft manhole cover comprising a cover body, an anti-theft device and a cover opening device. The center of the cover body is provided with a keyhole used to open the cover. An antitheft lock is arranged on the reverse surface corresponding to the cover body provided with the keyhole. The antitheft lock comprises a square box body. Two holes are respectively arranged at the symmetrical sides of the wall of the box body. One ends of two lock rods are provided with a rack, and the rack ends are oppositely arranged in the box body and extend out of the holes. The distance of the tooth concave parts of the two racks is as the same as the diameter of the keyhole. The other ends of the lock rods are a lock. The locks of the two ends penetrate a lock base, and therefore, a certain distance having the guiding function is positioned among the locks of the two ends and the cover body. The middle sections of the lock rods are sheathed with springs, one end of the spring leans to the wall of the box body, and the other end of the springs is limited by check ring on the lock rod in the state of compression to make the two locks support the edges of the both sides of the cover body; the cover opening device comprises a wrench handle on the upper part and a gear wheel on the lower part, and the gear wheel is matched with the racks.

Description

Theft protection inspection shaft lid

Technical field

The utility model relates to a kind of theft protection inspection shaft lid, is used for the inspection shaft lid of the inspection shaft of all underground installations.

Background technology

Now, the urban sewage system uses a large amount of inspection shaft lids, and common inspection shaft lid is not owing to there is burglar-proof mechanism, and possibility is stolen at any time, and public property is incurred loss, and the serious personnel that cause are strayed in it and are drowned.Relevant report is of common occurrence.City management department under the accident inspection shaft lid has to spend great amount of manpower, material resources, the problems of dealing with problems arising from an accident such as reparations of fund solution accident.Some theft protection inspection shaft covers for various reasons or is difficult to carry out, or misses one's aim.

Summary of the invention

The purpose of this utility model is a kind of theft protection inspection shaft lid of design, the generation of effectively prevention accident, and what it was taked is that mechanical type can be locked in the inspection shaft lid on the inspection shaft seat firmly, has only the full-time staff of this department to use special tool just can uncap.

The technical solution of the utility model: this theft protection inspection shaft lid comprises lid, anti-theft device and hood-opening device, the lid center is provided with the keyhole of the usefulness of uncapping, corresponding keyhole lid reverse side is equipped with theftproof lock, theftproof lock comprises a square box body, respectively there are two holes on box wall symmetry both sides, one end of two locking bars is tooth bars, the tooth bar end box body of packing into relatively stretches out from the hole, mark of mouth place distance on two tooth bars is identical with the keyhole diameter, the other end of locking bar is a tapered end, the two ends tapered end penetrates the tapered end seat, and making has certain distance and play the guiding role between two ends tapered end and lid, and the locking bar stage casing is with spring, one end of spring is by being attached on the box wall, the other end is spacing by the back-up ring on the locking bar, makes it to be in compressive state, and two tapered ends are pushed up to the lid both sides of the edge; Hood-opening device comprises the spanner handle on top and the gear of bottom, and gear is complementary with tooth bar.

Described theft protection inspection shaft lid is carried lid in the keyhole both sides and is stopped mouth; Between spanner handle and gear, carry the lid retaining.

Advantage of the present utility model:

Description of drawings

Fig. 1 is the vertical sectional structure schematic diagram of theft protection inspection shaft lid user mode of the present utility model;

Fig. 2 is that theft protection inspection shaft lid is looked up structural representation;

Fig. 3 is the hood-opening device structural representation;

Fig. 4 is a hood-opening device gear parts cross section structure schematic diagram.

Fig. 5 is theft protection inspection shaft and cover opening device relative position schematic diagram.

The specific embodiment

Fig. 1 is that theft protection inspection shaft of the present utility model covers vertical sectional structure schematic diagram, and Fig. 2 looks up structural representation.The structure of theft protection inspection shaft lid comprises: its lid 1 center is provided with the keyhole 2 of the usefulness of uncapping, corresponding keyhole lid reverse side is equipped with theftproof lock, theftproof lock comprises a square box body 3, respectively there are two hole 3-1 and 3-2 in box wall symmetry both sides, in the tooth bar end 5 relative load holes of two locking bars 4,3-1 is a circular port, square tooth bar is stuck in the box, and 3-2 is a square opening, and square tooth bar is stretched out outside the box, keyhole is a circular hole, tooth on two toothed rack is staggered relatively, and mark of mouth place distance is identical with the keyhole diameter, carries lid in other both sides of keyhole and stops a mouthful 2-1, the other end of locking bar is a tapered end 6, the locking bar stage casing is with spring 7, and an end of spring 7 abuts on the box wall, and the other end is spacing by the back-up ring on the locking bar 8, make it to be in compressive state, two tapered ends are pushed up to the lid both sides of the edge; Two tapered end seats are fixed on lid reverse side both sides, and the two ends tapered end passes the tapered end seat, and the tapered end seat play the guiding role, and make certain distance is arranged between two ends tapered end and lid, when inserting the inspection shaft seat 10 of well head with convenient inspection shaft lid, make the two ends tapered end be stuck in seat ring 11 below.

Fig. 3 is the hood-opening device structural representation, and Fig. 4 is the hood-opening device gear parts and carries lid retaining structural representation.Hood-opening device is a cover opener, comprises the spanner handle 12 on top and the gear 14 of bottom, and gear 14 is complementary with tooth bar 5, carries lid retaining 13 between spanner handle and gear.

The profile of inspection shaft lid can be multiple shape: circle, square, rectangle etc., the keyhole shape that the front is provided with the usefulness of uncapping is circular, jagged on both sides, circular opposite end, stop a mouthful 2-1 as carrying lid, carry lid retaining 13 and can stop a mouthful 2-1 hand-hole from carrying lid, the profile of the shape in whole hole and hood-opening device bottom matches, the gear of uncapping can free in and out flexibly, the back side is provided with the anti-theft device framework with the keyhole center, is square or rectangle box body, is connected to form by four limit box walls, be symmetrical in tapered end seat both sides two holes are respectively arranged, one is square, coincide with the tooth bar size, and tooth bar is packed into thus.Another is circular, matches with the locking bar size, and locking bar passes thus, and passes the tapered end seat.Whole inspection shaft lid, theftproof lock box body, tapered end seat are as a whole.Disposable finishing when casting by founding.Tapered end, locking bar, teeth bar, spring can assemble by figure.

Using method: in the time of in working order, owing on the locking bar compression spring is installed, tapered end will remain on locking-in state, see accompanying drawing 1.See accompanying drawing 5: after the wrench of uncapping is inserted by keyhole 2, after tooth bar 5 engagements on gear 14 and both sides, rotary handle makes in the rack displacement pulling locking bar tapered end withdrawal tapered end seat, carry lid retaining 13 this moment and avoid carrying lid and stop a mouthful 2-1, screw in lid 1 time, when lifting spanner handle 12, application is carried lid retaining 13 and is mentioned lid, just the inspection shaft lid can be mentioned and open, the keyhole limit can be established ramped shaped and be carried lid retaining position block 15 in anti-theft box, prevents that spring force may be with gear and the wrench of uncapping revolution.

The theft protection device of theft protection inspection shaft lid is very simple at the production fit on, and each inspection shaft lid and cover opener can be fixed dimensional standard separately, and it is the most appropriate that spanner can not be used with mutually.

Claims

1, a kind of theft protection inspection shaft lid, comprise lid, anti-theft device and hood-opening device, it is characterized in that the lid center is provided with the keyhole of the usefulness of uncapping, corresponding keyhole lid reverse side is equipped with theftproof lock, theftproof lock comprises a square box body, respectively there are two holes on box wall symmetry both sides, one end of two locking bars is tooth bars, the tooth bar end box body of packing into relatively stretches out from the hole, mark of mouth place distance on two tooth bars is identical with the keyhole diameter, and the other end of locking bar is a tapered end, and the two ends tapered end passes the tapered end seat, making has certain distance and play the guiding role between two ends tapered end and lid, the locking bar stage casing is with spring, and an end of spring is by being attached on the box wall, and the other end is spacing by the back-up ring on the locking bar, make it to be in compressive state, two tapered ends are pushed up to the lid both sides of the edge; Hood-opening device comprises the spanner handle on top and the gear of bottom, and gear is complementary with tooth bar.

2, theft protection inspection shaft lid according to claim 1 is characterized in that carrying lid in the keyhole both sides stops mouth; Between spanner handle and gear, carry the lid retaining.