CN2142470Y - Well cover with implicit lock - Google Patents

Abstract

The utility model relates to a cover for the upright shaft of an underground pipeline, which comprises a well cover seat, a well cover and a special cover-opening tool. The utility model is characterized in that the well cover seat and the well cover adopt the structure that a single end is wedged, and the back side of the other end of the well cover is provided with a built-in lock. A pushing and pulling lock bolt in the built-in lock can be clamped under the bearing platform of the well cover seat to cause the well cover and the well cover seat to be locked tightly when the pushing and pulling lock bolt is pushed out. The lock bolt is opened or closed by a special pulling tool. The utility model has simple structure, good practicality, ensures the safety of underground pipelines, prevents the well cover from losing, and reduces the impact noise of the well cover. The cover for the upright shaft of an underground pipeline can be also refitted on the existing well cover.

Description

Well cover with implicit lock

The utility model relates to underground pipeline, comprises the shaft cover of sewage conduct, subway etc., is specially manhole cover base, well lid and the special use instrument of uncapping.

At present common well flap mostly is cast iron, and specification is divided into 600mm and 700mm bore, the branch of light-duty in addition, heavy type and scale-up version.These well flap structures are basic identical, all do not lock between well lid and the manhole cover base, because the special environment for use of well lid, common lock is difficult to use, and therefore, the stolen phenomenon of well lid often occurs.

The purpose of this utility model is that a kind of well flap that has special built-in lock will be provided, and it is simple in structure, practical, use, easy to maintenance.Special built-in lock also can be installed among the existing well flap, and the well flap in using is transformed.

The utility model is to realize like this, the well flap comprises that manhole cover base, well lid and special use lift instrument, and manhole cover base and well lid adopt single-ended wedging structure, and the back side of the other end of well lid is provided with built-in lock, well lid has near the built-in lock place and lifts the hole, and special use lifts instrument can open and close built-in lock by lifting the hole.

Built-in lock is made of the dead bolt in lock box and lock box door bolt, and after well lid was built, the special use instrument that lifts was released the dead bolt door bolt, is stuck in below the cushion cap of manhole cover base, and under the acting in conjunction of lock bolt and wedge structure, well lid is lockable like this.

Below in conjunction with accompanying drawing, the utility model is further described, accompanying drawing is one of the utility model embodiment, and size just is the relation of the position between the clearer expression each several part among the figure, rather than to restriction of the present utility model.

Figure 1A, Figure 1B, Fig. 1 C are respectively elevation, local mansion view and the partial enlarged drawing of manhole cover base.

Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D are respectively front view, vertical view, the partial enlarged drawing of well lid.

Fig. 3 A, Fig. 3 B are respectively built-in lock dead bolt door bolt elevation and vertical view.

Fig. 4 A, Fig. 4 B are respectively built-in lock lock box elevation and vertical view.

Fig. 5 A, Fig. 5 B are respectively elevation, the vertical view that special use lifts instrument.

Manhole cover base has base (1), end wall (5) and cushion cap major parts such as (4), it is characterized in that the part of the inner peripheral wall of end wall (5) slopes inwardly, with the upper surface formation wedge-shaped slot (6) of cushion cap.

The periphery part of the cover plate of well lid (2) is lozenges (10), wedge-shaped slot on its shape and the manhole cover base (6) is complementary, the back side of the other end of the well lid relative with lozenges is provided with the built-in lock platform (8) of projection, has built-in lock installing hole (9) on the built-in lock platform.Cover plate (2) upward has near built-in lock platform place and lifts hole (7).

Built-in lock is made up of dead bolt door bolt (11) and lock box (12) two parts, and dead bolt door bolt (11) is a strip, and the one end is respectively equipped with locking boss (13) and positive stop lug boss (14).Lock box is a trough-shaped body, corresponding dead bolt door bolt boss lock box bottom is provided with locking groove (16) and limited impression (15), lock box is short than the dead bolt door bolt, have installing hole (17) on the lock box body, the dead bolt door bolt is packed into by the direction of arrow among the figure in the lock box, be installed on the built-in lock platform of well lid, dead bolt door bolt head (18) outwards points to cushion cap again.

Special use lifts instrument (3) and is hockey stick shape, and head is equipped with L shaped magnet (20), and its shape, size can enter and lift hole (7), and is complementary with dead bolt door bolt afterbody (19).

The utility model in use, in the wedge-shaped slot of the lozenges fill-in well cage of well lid, the dead bolt door bolt is pushed back in the lock box, build well lid, lift instrument with special use, by lift the hole promote dead bolt door bolt afterbody make dead bolt door bolt head be stuck in cushion cap below, the locking boss of dead bolt door bolt and positive stop lug boss enter respectively in the corresponding recesses in the lock box simultaneously.In order to make the dead bolt door bolt can not deviate from locking slot because of vibration, can be at locking bottom portion of groove device flat thin magnet, to hold the dead bolt door bolt.

Special use lifts the preceding magnet of instrument and holds dead bolt door bolt afterbody when unblanking, and makes it deviate to lock groove and returns in the lock box, and well lid just can be opened.

The built-in lock that the utility model increases removes the current safety in safety that has ensured subterranean pipe line and road surface, well lid is contacted with manhole cover base closely can not occur that automobile was pressed well lid and the noise that produces.

Claims (2)

1, a kind of hidden-locked well flap comprises that manhole cover base, well lid and special use lift instrument, and manhole cover base has base (1), end wall (5) and cushion cap (4), and well lid is by cover plate (2), and reinforcing rib constitutes, and has on the cover plate and lifts the hole, of the present utility model being characterised in that:

The part of the inner peripheral wall of manhole cover base end wall (5) slopes inwardly, with the upper surface formation wedge-shaped slot (6) of cushion cap (4);

The part of the periphery of the cover plate of well lid (2) is lozenges (10), wedge-shaped slot on its shape and the manhole cover base (6) is complementary, the back side of the other end of the cover plate (2) relative with lozenges (10) is provided with the built-in lock platform (8) of projection, have installing hole on the built-in lock platform, cover plate (2) has near built-in lock platform place and lifts hole (7);

Built-in lock is made of dead bolt door bolt (11) and lock box (12) two parts, the dead bolt door bolt is strip, the one end is respectively equipped with locking boss (13) and positive stop lug boss (14), lock box is a trough-shaped body, bottom land is provided with locking groove (16) and the limited impression (15) that is complementary with dead bolt door bolt boss (13), (14), and lock box is shorter in length than the dead bolt door bolt, has installing hole (17) on the lock box body, the dead bolt door bolt places in the lock box body, and the lock box body is installed on the well lid built-in lock platform;

Special use lifts instrument (3) and is hockey stick shape, and head is equipped with L type magnet (20), and its size can make the special-purpose tool head insertion that lifts lift hole (7).

2, well flap according to claim 1 is characterized in that flat thin magnet is equipped with in locking groove (16) bottom of lock box.

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