CN2038515U

CN2038515U - Auto-lock device for well cover

Info

Publication number: CN2038515U
Application number: CN 88207475
Authority: CN
Inventors: 王宣战
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-06-21
Filing date: 1988-06-21
Publication date: 1989-05-31

Abstract

The utility model belongs to an automatic locking device for a well cover, which is used in a water supply pipe system and a sewer system for preventing a cover plate being stolen. In the utility model, one end of a cover plate is connected with a well seat by a gemel, and the other end achieve the function of self locking by a locking hook arranged in the well seat. The upper part of the locking hook forms an 'L' shape, and the lower part of the locking hook is provided with an eccentric block which is eccentric with the center of the rotation shaft of the locking hook. The upper end surface of the well seat is also provided with a screw for opening the cover plate. The structural bond of the device is reliable. In addition, the automatic locking device for a well cover, which has the advantages of good self locking performance and convenient and flexible open, can effectively prevent the well cover being stolen.

Description

Auto-lock device for well cover

The utility model relates to a kind of manhole lid device in the upper and lower water piping system in city, and specifically, it is a kind of manhole lid device with self-locking mechanism.

As everyone knows, at present in the upper and lower water piping system in city, nearly all be to adopt removable cover directly to be seated on the well seat, following at vehicle or people for hitting, cover plate and well seat surface mutual dislocation, form unsettled connecting structure, and cause unnecessary personal injury to take place, particularly this unsteady connecting structure, be easy to cause its cover plate stolen, cause all kinds of accidents that artificially caused to happen occasionally, the consequence that is caused is even more serious, has also caused unnecessary economic loss to country simultaneously.

The purpose of this utility model provides and a kind ofly cover plate and well seat is had stable connect and can prevent the self-lock manhole cover device that cover plate is stolen.

The utility model is to constitute like this, one end of well seat is connected with hinge with an end of well lid, turning 180 ° of the relative well lid of cover plate, in the other end of well seat rotating shaft is housed, be fixedly connected with the locking hook in the rotating shaft, said locking hook is an overall structure, its top is " ┐ " shape latch hook, the bottom is an eccentric block, the similar arc of the section configuration of eccentric block, for making cover plate and well seat automatic blocking or unlatching, must make the vertical center line of the vertical center line of eccentric block and rotating shaft have the eccentric distance of 4～5mm.The top of well seat also is cast with company's lid of " ┐ " shape section, connects to cover to be shaped on screw, and the center line of this screw passes through and be crossing with the plane A of eccentric block.Be shaped on the locked groove that matches with latch hook in the other end of cover plate.

Accompanying drawing 1 is a structural representation of the present utility model, among the figure, and 1---hinge, 2---cover plate, 3---locked groove, 4---latch hook, 5---screw, 6---eccentric block, 7---rotating shaft, 8---well seat, A---the unlatching face of eccentric block.

But the closing of self-lock manhole cover device, opening process accompanying drawings are as follows:

Accompanying drawing 1 is a closed condition, in the time of need opening, only needs can make the unlatching face A of private key by screw (5) and eccentric block (6) the eccentric block rotation and make latch hook (4) break away from locked groove (3) with one, moves cover plate (2) then, finishes unlatching.When needing closed-in well seat hole, can with cover plate directly upset be pressed in the upper surface of eccentric block, when withdrawing from key, make eccentric block rotate to former balance position and latch hook enters in the locked groove by rotating shaft, finish and close.

Accompanying drawing has provided embodiment of the present utility model.Cover plate (2) adopts the iron casting moulding respectively with well seat (8), the hinge axis of two members adopts high-intensity steel part rivet hot moulding, the section of the locked groove on the cover plate (3) is " Contraband ", and " ┐ " shape on the well seat connects the last plane of covering in the time of should closing with cover plate and maintains an equal level.Locking hook and rotating shaft (7) adopt cast steel to make one.

Self-lock manhole cover device of the present utility model, because the one end is hinged, other end self-locking, therefore, it is very firm to connect, stable. And can prevent effectively that cover plate is stolen. In addition, this device unlatching is convenient, flexible.

Claims

1, a kind of self-lock manhole cover device of well up and down that constitutes by cover plate (2), well seat (8), it is characterized in that being equipped with in the well seat (8) rotating shaft (7), be fixedly connected with the locking hook on the axle, the top of said locking hook is that " ┐ " shape latch hook (4), bottom are eccentric block (6), eccentric block becomes the eccentric throw of 4～5mm with the center of rotating shaft, company's lid of " ┐ " shape section is arranged at the top of well seat, even covers the center line in screw (5) and hole and the unlatching face A of eccentric block and intersects; Be shaped on the locked groove (3) that matches with latch hook on the cover plate (2); Cover plate at one end adopts hinge to be connected with the well seat.

2, self-lock manhole cover device according to claim 1, it is very levied and is that rotating shaft and locking hook adopt cast steel to make.