CN2763356Y

CN2763356Y - Cover for manhole

Info

Publication number: CN2763356Y
Application number: CN 200520032741
Authority: CN
Inventors: 姚井春
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-05
Filing date: 2005-01-05
Publication date: 2006-03-08
Anticipated expiration: 2015-01-05

Abstract

The utility model provides a well cover. Lock bolt seats (6) which use the center of a well cover body (1) as a symmetrical point are arranged on the bottom surface of the well cover body (1), and compression springs (2) are arranged in the lock bolt seats (6). The open ends of the lock bolt seats (6) are fixedly provided with end covers (3), and the rear ends of lock bolts (4) are pressed on the compression springs (2). The front ends extend from the end covers (3), and the extending ends of the lock bolts (4) are tapered. The taper of the upper surfaces of the lock bolts is smaller than the taper of the lower surfaces, and spacing steps are arranged on the lock bolts (4). Sealing rings (5) are arranged between the spacing steps and the end covers (3). The utility model has the advantages of simple structure and easy and quick installation, and not only has theft protection function but also has damping effect.

Description

A kind of well lid

Technical field

The utility model belongs to sewer and underground pipeline auxiliary products technical field, specifically, relates to a kind of well lid.

Background technology

At present, development along with urban construction, sewer and underground cables pipeline are also more and more in the underground distribution in city, for ease of maintenance, need inspection-pit be set in the suitable location of sewer or underground pipeline, then do not cover well head when not overhauling at ordinary times with well lid, particularly be positioned at the well lid on highway or the sidewalk, the general pig iron that adopts is made, strengthening its steadiness and weight capacity, but simultaneously also stolen easily.The well head that the stolen back of well lid is opened wide causes traffic accident easily, and the pedestrian that passes by on one's way does not note falling into easily in the well, and therefore various in recent years anti-stealing manhole covers arise at the historic moment.Existing anti-stealing manhole cover generally is that lockset is set on well lid, with key operated, though solved well lid stolen problem easily, but the cost height, operate loaded down with trivial details, the easy corrosion of lockset, in case after the lockset corrosion, be difficult to open it with key, thereby make troubles, therefore be difficult to large-scale popularization on market to service work.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of unlatching convenient, reliable, and has the well lid of certain anti-theft feature.

The technical solution of the utility model is: the center in the bottom surface of well lid body about the well lid body is symmetrically arranged with the dead bolt seat, the compression spring is arranged in the dead bolt seat, the openend of dead bolt seat is fastened with end cap, the rear end of dead bolt is pressed on the compression spring, front end stretches out end cap, and the external part of dead bolt is taper, and the tapering of upper surface is less than the tapering of soffit, dead bolt is provided with limited step, is provided with sealing ring between the inner face of this limited step and end cap.

The dead bolt seat of above-mentioned well lid body bottom surface can have two, and the dead bolt seat is by being bolted on the well lid body.

The dead bolt seat of above-mentioned well lid body bottom surface can have four, and the dead bolt seat is by being bolted on the well lid body, and per two dead bolt seats are close to the bottom surface that is arranged on the well lid body side by side.

The dead bolt seat of above-mentioned well lid body bottom surface can have four, and the dead bolt seat is by being bolted on the well lid body, and they are evenly arranged along the gyratory directions of well lid body.

Above-mentioned dead bolt seat and well lid body also can be the monoblock cast part.

Dead bolt can be elastic under the guiding of dead bolt seat in the utility model, during installation, with the well head of well lid body aligning manhole cover base, the soffit of dead bolt rides on the annular boss of manhole cover base, and 2～3 operators stand in firmly pedals pin on the well lid body, so annular boss is to axial force of dead bolt reaction, the compression spring shrinks, and dead bolt retreats, and the well lid body snaps in manhole cover base, dead bolt stretches out under the effect of compression spring again, and spacing below the manhole cover base annular boss.Because the tapering of dead bolt upper surface is less than the tapering of soffit, when the well lid body being pulled out manhole cover base in the other direction when using the same method, to require great effort very much, and must it could be opened, therefore reach certain antitheft purpose by construction equipments such as tripod and hauling blocks.Because the effect of compression spring also has certain cushioning effect when the load-bearing of well lid body.

The utility model has the advantages that: simple in structure, easy for installation, quick, certain antitheft effect is not only arranged, also have certain cushioning effect.

Description of drawings

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

Fig. 2 is office's enlarged drawing of Fig. 1;

Fig. 3 be the A of Fig. 1 to view, also be the structural representation of embodiment 1;

Fig. 4 is the B-B sectional drawing (amplification) of Fig. 3;

Fig. 5 is the structural representation of the utility model example 2;

Fig. 6 is the structural representation of the utility model example 3.

The specific embodiment

As Fig. 1, Fig. 2: the utility model is made up of well lid body 1, compression spring 2, end cap 3, dead bolt 4, sealing ring 5 and dead bolt seat 6, center in the bottom surface of well lid body 1 about well lid body 1 is symmetrically arranged with dead bolt seat 6, the dead bolt seat has compression spring 2 for 6 li, dead bolt seat 6 usefulness end caps 3 carry out fit sealing, the rear end of dead bolt 4 is pressed on the compression spring 2, front end stretches out end cap 3, the external part of dead bolt 4 is taper, and the tapering of upper surface is less than the tapering of soffit, dead bolt 4 is provided with limited step 4a, is provided with sealing ring 5 between the inner face of this limited step 4a and end cap 3.7 is manhole cover base among Fig. 1, and 7a is the annular boss on the manhole cover base 7.

Fig. 3 shows the structural representation of the utility model embodiment 1, and in this embodiment, the dead bolt seat 6 of well lid body 1 bottom surface has two, and dead bolt seat 6 is by being bolted on the well lid body 1.

Fig. 5 shows the structural representation of the utility model embodiment 2, in this embodiment, the dead bolt seat 6 of well lid body 1 bottom surface has four, and dead bolt seat 6 is by being bolted on the well lid body 1, and per two dead bolt seats 6 are close to the bottom surface that is arranged on well lid body 1 side by side.

Fig. 6 shows the structural representation of the utility model embodiment 3, and in this embodiment, the dead bolt seat 6 of well lid body 1 bottom surface has four, and dead bolt seat 6 is by being bolted on the well lid body 1, and they are evenly arranged along the gyratory directions of well lid body 1.

Certainly, the connected mode between dead bolt seat 6 and the well lid body 1 is not limited to above-mentioned bolt connecting mode, when producing in enormous quantities, can take to be fabricated to the structure of monoblock cast part.

Claims

1, a kind of well lid, it is characterized in that: the center in the bottom surface of well lid body (1) about well lid body (1) is symmetrically arranged with dead bolt seat (6), there is compression spring (2) dead bolt seat (6) lining, the openend of dead bolt seat (6) is fastened with end cap (3), the rear end of dead bolt (4) is pressed on the compression spring (2), front end stretches out end cap (3), the external part of dead bolt (4) is taper, and the tapering of upper surface is less than the tapering of soffit, dead bolt (4) is provided with limited step (4a), is provided with sealing ring (5) between the inner face of this limited step (4a) and end cap (3).

2, a kind of well lid according to claim 1 is characterized in that: the dead bolt seat (6) of described well lid body (1) bottom surface has two, and dead bolt seat (6) is by being bolted on the well lid body (1).

3, a kind of well lid according to claim 1, it is characterized in that: the dead bolt seat (6) of described well lid body (1) bottom surface has four, dead bolt seat (6) is by being bolted on the well lid body (1), and per two dead bolt seats (6) are close to the bottom surface that is arranged on well lid body (1) side by side.

4, a kind of well lid according to claim 1 is characterized in that: the dead bolt seat (6) of described well lid body (1) bottom surface has four, and dead bolt seat (6) is by being bolted on the well lid body (1), and they are evenly arranged along the gyratory directions of well lid body (1).

5, a kind of well lid according to claim 1 is characterized in that: described dead bolt seat (6) is the monoblock cast part with well lid body (1).