CN2210922Y

CN2210922Y - Anti-theft manhole cover

Info

Publication number: CN2210922Y
Application number: CN 95200949
Authority: CN
Inventors: 贾宁燕
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-13
Filing date: 1995-01-13
Publication date: 1995-10-25
Anticipated expiration: 2005-01-13

Abstract

The utility model relates to an anti-theft manhole cover comprising a manhole ring and a manhole cover. The anti-theft manhole cover is characterized in that a fixing rod type anti-theft device is arranged between the manhole ring and the manhole cover; one end of a fixing rod of the anti-theft device is cast with the manhole cover into integration, the other end penetrates into a fixing hole on the manhole ring, and then the shield head at the end is welded; the fixing rod can move up and down following the manhole cover and can also rotate right and left. The utility model has the advantages of simple structure, low cost, convenient installation and construction, convenient opening and closure, excellent anti-theft performance, etc.

Description

Anti-theft manhole cover

The utility model relates to a kind of well lid technical field.

Traditional well lid is the well lid of cast iron type, and well lid directly covers on walling crib, and this well lid very easily stolen robbery walk, and brings danger can for after well lid is stolen traffic and pedestrian.There are some well lids to come out in recent years with anti-theft feature, as well lid with built-in lock, well lid and walling crib are with hinged well lid or the like, this class well lid is because not too reasonable on its structure, not to exist defectives such as complex structure, cost height, have shortcomings such as theftproof performance is poor, use inconvenience exactly.

The purpose of this utility model be design a kind of have simple in structure, the new pattern manhole cover of advantage such as cost is low, and theft-proof is good, and is easy to use.

The well lid of this utility model is made up of walling crib and well lid two parts, it is characterized in that between well lid and walling crib, being provided with the fixedly anti-theft device of rod-type, fixedly fixed bar one end and the well lid of the anti-theft device of rod-type are cast as one, and its other end passes on the walling crib again that the retaining head weldering of this end is dead behind the fixing hole.Fixed bar can be up and down with well lid, but also left rotation and right rotation, and its movable height is by the restriction of retaining head.Fixed bar and retaining head allow well lid and walling crib link together all the time, well lid upwards lift back well lid and fixed bar can be in the fixing hole of walling crib left rotation and right rotation, just well lid is opened after rotating to certain angle, people just can descend in the well and construct, otherwise then well lid are closed.So just can reach safe, antitheft purpose.

This well lid is simple in structure, and cost is low, and installation is convenient, when opening well lid especially at ordinary times, can not bring harm to the constructor because of well lid falls down, and opening and closing are very convenient, and theft-proof is good, has favorable economic benefit and social benefit.

Fig. 1 is the example structure schematic diagram of the utility model anti-stealing manhole cover.

Among Fig. 1,1 walling crib; 2 well lids; 3 fixed bars; 4 well lids lift the hole; Hole, 5 walling crib angle; 6 retaining heads; 7 fixing holes; Fixed bar (3) and well lid (2) are cast as one, and its other end passes behind the fixing hole (7) on the walling crib (1) again that retaining head (6) weldering of this end is dead, and fixed bar (3) can be up and down with well lid (2), and its movable height is by retaining head (6) restriction.When need opening, insert well lid with cleek and lift in the hole (4) well lid (2) is upwards lifted, again well lid (2) is rotated to certain angle around fixing hole (7), be about to well lid (2) and open, otherwise then close.Because fixed bar was both sturdy, fixing solid again, make again on the structure design that the burglar is survivable, so it has good theft-proof.

Claims

1, a kind of anti-stealing manhole cover of forming by walling crib and well lid, it is characterized in that between walling crib and well lid, being provided with the fixedly anti-theft device of rod-type, fixedly fixed bar one end and the well lid of the anti-theft device of rod-type are cast as one, and its other end passes behind the fixing hole on the walling crib again that the retaining head weldering of this end is dead.