CN2151177Y - Manhole cover for preventing steal - Google Patents

Abstract

The utility model relates to a manhole cover. In the utility model, the inner sides of the lower surface of the manhole cover are respectively connected with a support frame downwards. The length of the two support frames is slightly smaller than the thickness of the surface of an urban road. A connecting frame is connected between the lower ends of the two support frames. The middle part of the connecting frame is hinged with an opening bolt. The middle part of a middle strip of a lock strip is sheathed on the opening bolt. Two side strips of the lock strip hinged with two ends of the middle strip (5) respectively pass through corresponding holes of the lower ends of the two support frame. The middle part of the manhole cover, which corresponds to the opening bolt is provided with an opening hole. The utility model has the advantages of simple manufacture, easy operation and reliable theft-proof performance.

Description

Manhole cover for preventing steal

The utility model relates to a kind of inspection shaft lid.

At present, the road surface in each city all is provided with inspection shaft lid, but it does not all have anti-theft feature, and in the last few years, it is very serious that inspection shaft covers stolen phenomenon, not only bring about great losses to country, and the time have the pedestrian to fall into the deep hole that no inspection shaft covers, the personnel that cause get injured by a fall.

The purpose of this utility model is exactly in order to address the above problem, and a kind of anti-stealing manhole cover is provided.

Technical solution of the present utility model:

A kind of anti-stealing manhole cover, it includes inspection shaft lid 1, it is characterized in that being connected with a bracing frame 2 respectively downwards in inspection shaft lid 1 soffit both sides, two support can 2 length be slightly larger than the thickness on road road surface, city, be connected with link 3 between the lower end of two bracing frames 2, the middle part of link 3 is hinged with opens bolt 4, the middle part of the central strip 5 of bolt is sleeved on opens on the bolt 4, the two edges 6 of the bolt that central strip 5 two ends are hinged passes from two bracing frames, 2 lower end corresponding apertures respectively, and the corresponding bolt 4 of opening has open hole 9 in the centre of inspection shaft lid 1.

The utility model has increased bolt mechanism, has solved the antitheft problem of inspection shaft lid, need use the special opening instrument when its is opened, and needs 2-3 people to move simultaneously just to open, increase the safety of inspection shaft lid greatly.The utility model is made simple, and easy to operate, theftproof performance is reliable, has overcome the phenomenon of getting injured by a fall because of the stolen personnel that cause of inspection shaft lid, and the protection of covering for each city inspection shaft of country provides favourable guarantee.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a unlatching bolt enlarged diagram of the present utility model.

As Fig. 1, the utility model covers when the inspection shaft mouth on road road surface, put in to entangle from the open hole 9 in the middle of the inspection shaft lid 1 with the special opening instrument and open bolt 4, open bolt 4 as Fig. 2, its lower end is a cylinder, it passes the middle part of link 3 and makes them hinged with the cottor pin pinning, open bolt 4 middle parts one square step is arranged, be used for connecting with the square hole at central strip 5 middle parts of bolt, there is a recess hole upper surface of opening bolt 4, the special opening instrument of the band raised line that is used for and matches connects, and the upper end of opening bolt 4 also can be square toes, and correspondingly the special opening instrument has the square hole that matches.After the special opening instrument entangles and opens bolt 4, rotate the special opening instrument, it forwards to and link 3 equidirectional positions by the central strip 5 of opening bolt 4 drive bolts, then the hinged edge strip in central strip 5 two ends 6 is protruding by the hole of two bracing frames, 2 lower ends, be stuck on the bottom surface on road surface, the inspection shaft lid has just been built like this.Be to strengthen anti-theft effect, can pass a side in hole in the two edges 6 of the corresponding bolt in two bracing frames, 2 lower ends again, respectively be provided with an insurance shell fragment 7, the opposite side that correspondingly corresponding two bracing frames 2 lower ends two pass the hole has insurance tooth mouth 8 at two edges 6 middle parts.Like this when opening inspection shaft lid 1, just need at least two people to operate simultaneously, wherein a people stirs two edges 6 under need taking and stretching the dog hole 10 of two vertical bar both sides from inspection shaft lid 1, make them overcome the elastic force that insures shell fragment 7 separately, the insurance tooth mouth 8 at its middle part is thrown off the hole wall that passes of two bracing frames, 2 lower ends, this moment, another human special opening instrument entangled unlatching bolt 4 and rotation under the open hole 9 of inspection shaft lid 1 is stretched, the central strip 5 that just can drive bolt is rotated to the direction perpendicular to link 3, the edge strip 6 at its two ends is inwardly drawn in, the inspection shaft lid just can have been removed in the bottom surface of throwing off the road surface at this moment.The utility model increases special opening instrument and number, makes the burglar very fast assistant to steal the inspection shaft lid, has played antitheft effect.

Claims (4)

1, a kind of anti-stealing manhole cover, it includes inspection shaft lid 1, it is characterized in that being connected with a bracing frame 2 respectively downwards in inspection shaft lid 1 soffit both sides, two support can 2 length be slightly larger than the thickness on road road surface, city, be connected with link 3 between the lower end of two bracing frames 2, the middle part of link 3 is hinged with opens bolt 4, the middle part of the central strip 5 of bolt is sleeved on opens on the bolt 4, the two edges 6 of the bolt that central strip 5 two ends are hinged passes from two bracing frames, 2 lower end corresponding apertures respectively, and the corresponding bolt 4 of opening has open hole 9 in the centre of inspection shaft lid 1.

2, by the described anti-stealing manhole cover of claim 1, it is characterized in that opening bolt 4 lower ends is cylinder, it passes the middle part of link 3 and makes them hinged with the cottor pin pinning, open bolt 4 middle parts one square step is arranged, be used for connecting with the square hole at central strip 5 middle parts of bolt, there is a recess hole upper surface of opening bolt 4, is used for connecting with the special opening instrument of the band raised line that matches.

3, by claim 1 or 2 described anti-stealing manhole covers, it is characterized in that the upper end of opening bolt 4 also can be square toes, correspondingly the special opening instrument has the square hole that matches.

4, by the described anti-stealing manhole cover of claim 1, it is characterized in that the two edges 6 of the corresponding bolt in two bracing frames, 2 lower ends passes a side in hole, respectively be provided with an insurance shell fragment 7, the opposite side that correspondingly corresponding two bracing frames 2 lower ends two pass the hole has insurance tooth mouth 8 at two edges 6 middle parts.

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