CN2167127Y

CN2167127Y - Improved safety cover for well with theft-proof function

Info

Publication number: CN2167127Y
Application number: CN 93230776
Authority: CN
Inventors: 屈心田
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-22
Filing date: 1993-04-22
Publication date: 1994-06-01
Anticipated expiration: 2003-04-22

Abstract

The utility model relates to an improved safety cover for a well with a theft-proof function. A cover plate is hinged with a well ring by a pin shaft on some chord line of the inner circle of the well ring. A locking mechanism is arranged on the inner surface of the cover plate. A locking pin is matched with a hole on the inner wall of the well ring by the acting force of a spring, which locks the well cover which can only be opened by a special key. A foot screw hole is arranged on the well ring and is used for firmly fixing the well ring on the ground. Thus, the utility model has safety and theft-proof functions.

Description

Improved safety cover for well with theft-proof function

The utility model belongs to ancillary engineering facility facility field, and be used for underground pipeline or underground installation and check well head, be a kind of improved anti-theft security well lid.

Underground pipeline commonly used at present or underground installation are checked the well lid of well head, are to add a cover plate in the annular walling crib, do not have any safety locking motion, are easy to often cause major accident for the lawless person steals.China utility application 90216715.4(notification number CN2079200U) provides a kind of insurance well lid, can avoid walling crib and surface separation, the shortcoming that cover plate separates with walling crib, opening of cover plate, will be with special key, but structure is complicated, makes trouble is installed.China utility application 90201045.X(notification number CN2060788U) provides a kind of anti-theft security well lid, its principal character is that cover plate is hinged on bearing pin chain and has avoided the two segregative shortcoming in the walling crib, when cover plate is opened, tiltedly stand on the walling crib, can attract much attention, avoid the generation of accident.But this utility model still has cover plate to be easy to open, and walling crib is easy and the problem of surface separation, and the danger that walling crib is stolen together with cover plate still can take place.

The purpose of this utility model is to provide a kind of improved anti-theft security well lid, is easy to open thereby overcome aforementioned various existing well lid.It is to the shortcoming of stealing together with walling crib.

Main points of the present utility model are, with the walling crib of cover plate hinge joint practicably thumb screw be securely fixed on the ground, cover inner surface is installed the blocking mechanism that a cover can only just can be opened with private key, and is usually that cover plate is locked in walling crib.

In the utility model the plan view of well lid as shown in Figure 1, walling crib ［ 1 ］ gabarit is annular.Have three holes ［ 4 ］ on its bead at least, thumb screw fixes well lid on the ground firmly insertedly, and actual conditions and the requirement of fang bolt when installing can an outward-dipping angle, and afterbody adds a knuckle again.Have three reinforcing ribs ［ 7 ］ on the walling crib bead at least.On a certain string of a musical instrument of circle, cover plate ［ 2 ］ is hinged with walling crib by being no less than one bearing pin ［ 3 ］ in walling crib.Near opening part, a cover blocking mechanism ［ 6 ］ is installed at cover inner surface, this mechanism can only insert the special keyhole of flat shape ［ 5 ］ with private key, and rotates an angle, stirs lock pin and makes it to retreat, and just can open cover plate.At the walling crib inwall one hole is arranged, the lock pin head is inserted, reach the purpose of locking.

Blocking mechanism as shown in Figure 2, on cover plate ［ 7 ］ inner surface, support ［ 2 ］ and ［ 5 ］ are installed, the hole of support and lock pin ［ 1 ］ are slidingly matched, lock pin and driving lever ［ 3 ］ are integral, and when feeding special-purpose key and rotating, stir driving lever, move after driving lock pin, to open cover plate, driving lever also provides the contact surface of back-moving spring ［ 4 ］, and back-moving spring is between driving lever and support ［ 5 ］.When not having active force, can make lock pin get back to locked position of coupler.In the lock pin posterior transversal one hole is arranged, insert alignment pin ［ 6 ］.

According to the utility model, when needs are opened well lid and overhauled,, insert keyhole to requiring the degree of depth with the private key of a special type section, turn clockwise, move after making lock pin, the disengaging jack upwards draws key bar then, and cover plate is opened.

Claims

1, a kind of anti-theft security well lid, by walling crib, cover plate is formed, well lid and cover plate are hinged with bearing pin, it is characterized in that blocking mechanism is arranged in the cover plate, the special keyhole of a flat shape is arranged on the cover plate, evenly distributing on the walling crib bead is no less than three fang bolt hole, and a hole that cooperates with lock pin head in the blocking mechanism is arranged on the walling crib inwall.