CN2687264Y

CN2687264Y - Forced anti-theft manhole cover

Info

Publication number: CN2687264Y
Application number: CN 200420039676
Authority: CN
Inventors: 温晓东; 张宝新
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-06
Filing date: 2004-04-06
Publication date: 2005-03-23
Anticipated expiration: 2014-04-06

Abstract

The utility model provides a forced anti-theft manhole cover which is mainly composed of a manhole seat, a manhole cover, a manhole cover bolt, a positioning pin, a bolt hole bracket and a key. The forced anti-theft manhole cover is characterized in that the key hole seat is deepened. A semi semi-communicating hole at one side of the bolt hole bracket is changed into a through hole which saves the locking bolt and is positioned by the positioning pin. The claw perch on the top of the key does not penetrate the sleeve barrel. The central board of the claw is movably pinned with the lower end of the key perch by the shaft pin. The upper top of the central board of the claw is the asymmetrical hemicycle. A long hole is arranged at the middle part of one side of the slope roof. The lower end of the sleeve barrel is pinned with the long hole on the central board of the claw by the sleeve barrel pin. A through hole of the claw is arranged at the key perch and the middle-lower part of the sleeve barrel. Because the locking part is made by the non-metal, the forced anti-theft manhole cover avoids the failure of locking or the difficulty of opening caused by corrosion. The forced anti-theft manhole cover simplifies the structure and the making process of the anti-theft manhole cover and reduces the production cost and decreases the risk of stolen and improves the safety factor.

Description

Powerful anti-stealing manhole cover

Technical field

The utility model relates to a kind of sewer and underground pipeline ancillary facility.

Background technology

032695446) and " novel antitheft well cover " (number of patent application: utility model patent 032695438) to be the applicant be called " anti-stealing manhole cover " (number of patent application: in the name of application on August 11st, 2003 to the prior art close with the utility model.The former is single bolt, is made up of well lid, well lid bolt, key.The latter is two bolts, is made up of well lid, well lid bolt, locking bolt, key, and well lid bolt and locking bolt are two bolts, and two kinds of bolts of key control open and close well lid, and claw is established in the key lower end, and " n " shape groove is established in its sleeve lower end, middle part, and oblong aperture is established on the right side.Adopt this anti-stealing manhole cover, though the more traditional well lid of anti-theft effect improves, but prior art adopts the well lid bolt in conjunction with the locking bolt, alignment pin is in conjunction with the structure of half through hole keyhole support, manufacture difficulty is big, the cost of production height, manipulate loaded down with trivial detailsly, prior art key claw passes the sleeve slotted hole in addition, regulates the claw angle by sleeve vast sky and " n " shape groove, can not be vertical fully closed during use, it is skewed that claw is, and so just increased keyhole, and keyhole and well lid bolt upper clipping claw hole are nearer in addition, make other instrument be easy to enter and open the well lid bolt, reduced the safety factor of anti-stealing manhole cover.

Summary of the invention

In order to overcome existing anti-stealing manhole cover complex structure, manufacture difficulty is big, the cost of production height, Key structure is unreasonable, manipulates loaded down with trivial details, the deficiency that safety factor is low, the utility model provides a kind of anti-stealing manhole cover, and it has not only improved the soundness of well lid, also improves and simplified simultaneously the structure of well lid and key, easy for operation quick, further improved the safety factor of anti-stealing manhole cover.

The technical scheme that the utility model technical solution problem is adopted is: anti-stealing manhole cover keyhole seat is deepened, and strengthened two well lid bolt spacings widen keyhole to the claw pitch-row from, keyhole support one side half through hole changes through hole into, save the locking bolt, by alignment pin location anti-avulsion, key top claw stock does not pass sleeve, its claw central plate is by pivot pin and the movable pin joint in spoon bar lower end, the top is asymmetric semicircle on the catching central plate, its top, slope one middle side part is established slotted hole, sleeve 14 lower ends are by slotted hole 18 pin joints on sleeve pin 19 and the claw central plate, and the claw through hole is established in spoon bar and sleeve middle and lower part." n " shape groove is established in sleeve one side lower end.

The beneficial effects of the utility model are, simplified antitheft structure and the manufacture craft of advancing to cover, reduced cost of production, its claw of key after the improvement can rotate 90 degree on the spoon bar, can keep vertical with the spoon bar, reduced the keyhole diameter of anti-stealing manhole cover, reduced and utilized other instruments arbitrarily to open well lid to get risk, improved the safety factor of anti-stealing manhole cover.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is bottom surface of the present utility model structure charts;

Accompanying drawing 3 is Key structure figure of the present utility model;

1 is that well seat, 2 is that well lid, 3 is that keyhole, 4 is that right well lid bolt, 5 is that keyhole support, 6 is that left well lid bolt, 7 is that well lid bolt claw hole, 8 is that alignment pin, 9 is that the interior edge of well seat, 10 is that open hole, 11 is that keyhole seat, 12 is that lever, 13 is that a spoon bar, 14 is that sleeve, 15 is that a spoon bar claw hole, 16 is that sleeve claw hole, 17 is that pivot pin, 18 is that claw central plate slotted hole, 19 is that sleeve pin, 20 is that claw, 21 is the claw central plate among the figure.

The specific embodiment

Shown in accompanying drawing 1,2,3, well seat 1 adopts cast iron or concrete processing and manufacturing, well lid 2, and back side keyhole support 5, open hole 10, keyhole seat 11, adopt steel concrete time processing moulding in mould, right well lid bolt 4, left well lid bolt 6 adopt the steel concrete manufacturing, put with keyhole support 5 in, prevent slippage well lid bolt upper clipping claw hole and keyhole apart from strengthening the back above keyhole length more than 2 times by alignment pin 8 location.Key adopts metal material to make, lever 12 adopts Metallic rod to make " T " structure with spoon bar 13, spoon bar 13 lower ends fluting, sleeve 14 lower ends one side is opened " n " shape groove, claw 20 passes through the pivot pin pin joint by claw central plate 21 and with spoon bar 13 lower ends, asymmetric semicircle is made on the top on the claw central plate, sleeve lower end " n " shape groove one side processes slotted hole 18, when claw is closed, sleeve claw hole 16 overlaps with spoon bar claw hole 15, one end of claw inserts in the hole, and a upright fully and spoon bar combines.

Claims

1, a kind of powerful anti-stealing manhole cover, mainly by the well seat, well lid, the well lid bolt, alignment pin, the keyhole support, key is formed, it is characterized in that: anti-stealing manhole cover keyhole seat is deepened, and strengthened two well lid bolt spacings with widen keyhole to the claw pitch-row from, keyhole support one side half through hole changes through hole into, save the locking bolt, by alignment pin location anti-avulsion, key top claw stock does not pass sleeve, and its claw central plate is by pivot pin and the movable pin joint in spoon bar lower end, and the top is asymmetric semicircle on the catching central plate, its top, slope one middle side part is established slotted hole, the sleeve lower end is by the slotted hole pin joint on sleeve pin and the claw central plate,, the claw through hole is established in spoon bar and sleeve middle and lower part.