CN2163824Y

CN2163824Y - Cipher locking type safety manhole cover

Info

Publication number: CN2163824Y
Application number: CN 93223758
Authority: CN
Inventors: 刘文江; 程铨
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-11
Filing date: 1993-09-11
Publication date: 1994-05-04
Anticipated expiration: 2003-09-11

Abstract

The utility model provides a password locking formula safety well lid. The cover plate has digital scale on the upper surface and two coupling hooks on the bottom, the base has notch matching with the coupling hooks on the spigot ring and locating mark on the top edge, and the cover plate and the base are connected via the coupling hooks and the spigot ring. The well lid adopts a coded locking structure, effectively prevents the cover plate from moving or losing, is safe and convenient to use, and can be applied to underground water pipelines, sewage pipelines, gas pipelines or underground communication cable manhole inspection wells.

Description

Cipher-locked safety cover for manholes

The utility model belongs to the overburden of hand-hole manhole in the technical field of buildings underground structure, is a kind of manhole cover of going into of coded lock enclosed particularly.

Be generally used for the hand-hole manhole flap of underground water conduit, blow-off line, gas flue or underground communication cable, mostly be by base and cover plate and connect to form.But, there is not any protector because existing well lid only is that cover plate is put on the seam ring of base.Therefore, tend to cause the displacement of cover plate or lose, and cause the accident, have a strong impact on the normal use of well lid.

The purpose of the utility model provides a kind of improved hand-hole manhole cover, and cover plate and base are closely connected, and can prevent the displacement of cover plate effectively or loses, and guarantees the normal use of well lid.

The utility model is achieved in that the well lid that adopts the coded lock closed type structure, is shaped on digital calibration on the upper surface circumferential edge of cover plate, and the bottom back side of cover plate is shaped on two different connection hooks; On the seam ring of base, be shaped on two notches that match with the connection hook of cover plate, the top mouth of base along on be shaped on a location mark; Cover plate becomes to be connected movingly closely with the seam ring by its connection hook with base.When the involutory lid of cover plate and base closes, two connection hooks of cover plate are two notches of corresponding base seam ring respectively, also be " home position " of well lid folding, number of division on the mark indication cover plate of base location is " password " that well lid opens and closes, with the connection hook of cover plate by behind the notch of base seam ring, rotation cover makes the connection hook be connected with the seam ring, both with the well lid locking.

The utility model adopts the coded lock closed type structure, and cover plate joins hook with base by it and is connected movingly closely with seam ring one-tenth, and effectively prevented the displacement of cover plate or lose and cause the accident, its novel structure, safe and convenient to use.It can be applicable to the hand-hole manhole of underground water conduit, blow-off line, gas flue or underground communication cable.

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

Fig. 1 is that master of the present utility model looks sectional view.

Fig. 2 be among Fig. 1 A-A to sectional view.

Fig. 3 is the rear elevation of Fig. 1 cover plate (2).

Fig. 4 is the rear elevation of base among Fig. 1 (1).

Fig. 5 is the sectional view that is shaped on the well lid of connection ring (9).

As shown in drawings, the utility model is made up of base (1) and cover plate (2), is shaped on digital calibration (3) at the upper surface circumferential part of cover plate (2), and the bottom back side of cover plate (2) is shaped on two different connection hooks (6,7); On the seam ring (5) of base (1), be shaped on the notch that matches with the connection hook (6,7) of cover plate (2), the top mouth of base (1) along on be shaped on a location mark (4); Cover plate (2) becomes to be connected movingly closely with seam ring (5) by its connection hook (6,7) with base.

Cause in order more effectively to prevent well lid from opening arbitrarily and to lose or damages, base seam ring (5) with join uniform teeth groove (8) (see figure 4) that is shaped on of bottom back side that hook (6,7) cooperates; Or add connection ring (9) (see figure 5) that is shaped on 1-2 road trough of belt mouth side by side in seam ring (5) bottom that is positioned at of base (1) again, to guarantee the safe handling of well lid.

Claims

1, a kind of coded lock enclosed Safety well cover of forming by base (1) and cover plate (2), cover plate (2) the upper surface peripheral portion that it is characterized in that this well lid is shaped on digital calibration (3), bottom back side is shaped on two different connection hooks (6,7), be shaped on the seam ring (5) of base (1) two with the notches that match of connection hook (6,7), top mouthful along on be shaped on a location mark (4), cover plate (2) is connected with seam ring (5) by joining hook (6,7) movingly with base (1).

2,, it is characterized in that the uniform teeth groove (8) that is shaped on of seam ring (5) bottom back side of base (1) according to the described well lid of claim 1.

3,, it is characterized in that the connection ring (9) that seam ring (5) bottom is shaped on 1-2 road trough of belt mouth side by side that is positioned at of base (1) according to claim 1,2 described well lids.