CN2688755Y

CN2688755Y - Simple safety manhole cover

Info

Publication number: CN2688755Y
Application number: CN 200420016072
Authority: CN
Inventors: 靳键云
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-13
Filing date: 2004-04-13
Publication date: 2005-03-30
Anticipated expiration: 2014-04-13

Abstract

The utility model provides a simple safety manhole cover comprising a manhole base 1 and a manhole cover 5 lying flat; the simple safety manhole cover is characterized in that a fixing hole 2 extending out of the manhole base is arranged in the manhole base. A fixing hole 6 extending out of the manhole cover is arranged on the manhole cover, and the fixing hole on the manhole base is connected with a closed loop wire rope or an iron chain 8 through the fixing hole on the manhole base by a safety bolt 3 and is fixed by a safety nut 4; the fixing hole on the manhole cover is connected with the closed loop wire rope or the iron chain through the fixing hole on the manhole cover by the safety bolt 3 and is fixed by the safety nut. The simple safety manhole cover has the advantages of simple structure, convenient use, easy manufacturing and lower cost.

Description

Simple and easy anti-stealing manhole cover

Technical field

The utility model relates to a kind of simple and easy anti-stealing manhole cover that utilizes anti-theft bolt that well pedestal and well lid are simply linked together.

Background technology

Present well lid belongs to the public utility category, the pipeline, catch pit and the use that are provided with when building urban road and municipal square in the suitable city-building, and especially all kinds of fiber optic cables wells of industries settings such as suitable communication, electric power and national defence use.Used inspection shaft losing of cover especially severe on the town road often causes pedestrian's immeasurable personal injury, and the major accident of driving vehicle, causes the lives and properties economic loss.For this reason, people have invented many anti-stealing manhole covers.As Chinese patent ZL 03210925.3 disclosed a kind of anti-stealing manhole cover.This anti-stealing manhole cover mainly is made of walling crib and well lid, is characterized in also being provided with special-purpose unlatching key, and wherein said well lid central authorities are provided with circular keyhole, and the central authorities at the well lid back side are provided with rotating driver plate, rotating driver plate supporting seat and reinforcing rib; The edge is provided with lockhole and positioning port in the described walling crib; The unlatching key of described special use is the T shape and is provided with positioning disk, arc telescopic switching pin, opens and closes the pin jump ring and opens and closes the lock spring.Though can effectively prevent losing again of well lid, it is complex structure comparatively, difficulty of processing is big, and cost of manufacture is higher.

Summary of the invention

The utility model provides a kind of simple and easy anti-stealing manhole cover, and it has not only solved the antitheft problem of well lid, and its cost is lower, it is also convenient especially to use.

The purpose of this utility model is achieved in that simple and easy anti-stealing manhole cover, is kept flat by well lid pedestal 1 and well lid 5 and forms; Be characterized in having in the well pedestal fixing hole 2 that protrudes pedestal, the fixing hole 6 that protrudes well lid arranged on the well lid, with anti-theft bolt 3 will the closed loop linkage by the fixing hole on the well pedestal and the well pedestal on fixing hole connect together, and fix with anti-theft nut 4; Fixing hole on closed loop linkage and the well lid is connected together by the fixing hole on the well lid with anti-theft bolt 3, and fix with anti-theft nut.Above-described closed loop linkage is wire rope or iron chains 8, perhaps adopts the connection chain of other high-strength flexible material.

The simple and easy anti-stealing manhole cover that the utility model provides is compared with background technology, owing to adopted the anti-theft technique of above well lid, structure is very simple, and it is also convenient especially to use, and cost easy to manufacture is lower, is easy to apply.

Description of drawings

Fig. 1 is the front view of the utility model well pedestal;

Fig. 2 is the lateral view of the utility model well pedestal;

Fig. 3 is the vertical view of the utility model well pedestal;

Fig. 4 is the front view of the utility model well lid;

Fig. 5 is the lateral view of the utility model well lid;

Fig. 6 is the vertical view of the utility model well lid;

Fig. 7 is the utility model well lid and well pedestal anti-theft bolt and closed loop wire rope or iron chains assembling schematic diagram.

The specific embodiment

Below in conjunction with this utility model of description of drawings specific embodiment.

The simple and easy well lid of the utility model is kept flat by well lid pedestal 1 and well lid 5 to be formed; Fig. 1, Fig. 2 and shown in Figure 3, the well pedestal of simple and easy anti-stealing manhole cover; The fixing hole 2 that protrudes pedestal is arranged in the well pedestal.Fig. 4, Fig. 5 and shown in Figure 6, the well lid of simple and easy anti-stealing manhole cover; Air vent 7 is arranged on the well lid, the fixing hole 6 that protrudes well lid is arranged.Shown in Figure 7, the fixing hole on closed loop wire rope or iron chains 8 and the well pedestal is connected together by the fixing hole on the well pedestal with anti-theft bolt 3, and fix with anti-theft nut 4; Fixing hole on closed loop wire rope or iron chains and the well lid is connected together by the fixing hole on the well lid with anti-theft bolt 3, and fix with anti-theft nut.

Employed anti-theft bolt is the technology that generally adopts now.Its function is: after anti-theft bolt was tightened, anti-theft nut slide fastener, anti-theft nut can rotate but can't take off, thereby reached antitheft purpose.

Claims

1, a kind of simple and easy anti-stealing manhole cover is kept flat by well lid pedestal (1) and well lid (5) and to form; It is characterized in that the fixing hole (2) that protrudes pedestal is arranged in the well pedestal, the fixing hole (6) that protrudes well lid is arranged on the well lid, fixing hole on closed loop linkage and the well pedestal is connected together by the fixing hole on the well pedestal with anti-theft bolt (3), and fix with anti-theft nut (4); Fixing hole on closed loop wire rope or iron chains and the well lid is connected together by the fixing hole on the well lid with anti-theft bolt (3), and fix with anti-theft nut.

2,, it is characterized in that described closed loop linkage is wire rope or iron chains (8) according to the described a kind of simple and easy anti-stealing manhole cover of claim 1.