CN201221093Y

CN201221093Y - Anti-theft manhole cover

Info

Publication number: CN201221093Y
Application number: CNU2008200366380U
Authority: CN
Inventors: 孙勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-16
Filing date: 2008-06-16
Publication date: 2009-04-15
Anticipated expiration: 2018-06-16

Abstract

The utility model relates to an antitheft device of a public inspection well lid, particularly an antitheft well lid, which comprises a well base and a cover plate. The cover plate is provided with at least two position clamping devices evenly distributed and at least two position clamping control holes evenly distributed; each position clamping device comprises a fixing part, a moving part and a position clamping spring; the fixing part is fixed on the cover plate; a groove is formed on the fixing part and used for the installation of the position clamping spring; a groove is formed on the moving part and used for the installation of the position clamping spring; the moving part is connected with the fixing part through the position clamping spring; the upper part of the moving part is positioned in the position clamping control hole; and the lower part of the moving part is a hook, the surface of the which is clamped on the bottom part of the well base. The utility model has the advantages of good antitheft performance and convenient use.

Description

A kind of anti-stealing manhole cover

Technical field

The utility model relates to a kind of public manhole cover anti-theft device, particularly a kind of anti-stealing manhole cover.

Background technology

Inspection shaft lid is seen everywhere as the communal facility on a kind of ground and the road, and public inspection shaft covers and usually be in unattended state at night, and the inspection shaft lid just becomes and steals the target that one's share of expenses for a joint undertaking is patronized like this.

At present, stolen in order to prevent the inspection shaft lid, Chinese patent discloses many technical schemes, it to the effect that is provided with the lock device of core with lock between well lid and walling crib, must use key and special spanner during unlatching, its weak point is: structure is comparatively complicated, and the cost of manufacture height is unfavorable for the transformation of existing inspection shaft lid; And because it is subjected to the corrosion of rainwater or sewage or the obstruction of silt for a long time, often makes key insert lockhole and scrap, its consequence is that whole well lid is scrapped, and destructive the prying open of well lid must be carried out operation.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of existing anti-stealing manhole cover, provides a kind of theftproof performance good, easy to use anti-stealing manhole cover.

In order to achieve the above object, the technical solution adopted in the utility model is:

A kind of anti-stealing manhole cover comprises well seat and cover plate, and cover plate has equally distributed at least two positioners and screens control hole; Positioner comprises fixture, movable part and screens spring, and fixture installs on the cover board, and the groove that the screens spring is installed is arranged on the fixture, and the groove that the screens spring is installed is arranged on the movable part, and movable part is connected with fixture by the screens spring; The top of movable part is positioned at the screens control hole, and the bottom of movable part is a grab, and its hook face snaps into the bottom of well seat.

The movable part top of described positioner is a column handle.

The grab of the movable part bottom of described positioner is an inclined-plane near the side of well seat.

The grab of the movable part bottom of described positioner is near the inclined-plane of the side of well seat, with the angle of vertical direction less than 40 °

The utlity model has good, the easy to use advantage of theftproof performance.

Description of drawings

Fig. 1 is the anti-stealing manhole cover structural representation;

Fig. 2 is the anti-stealing manhole cover vertical view;

Fig. 3 is the positioner partial schematic diagram;

Fig. 4 is the schematic diagram of positioner movable part;

Fig. 5 is the schematic diagram of positioner fixture;

Fig. 6 is the positioner structural representation;

Fig. 7 is the anti-stealing manhole cover schematic diagram of band crow bar;

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail:

Referring to Fig. 1,2,6,8,9, a kind of anti-stealing manhole cover comprises well seat 1 and cover plate 2, and cover plate 2 has equally distributed at least two positioners 3 and screens control hole 2-1; Positioner 3 comprises fixture 3-1, movable part 3-2 and screens spring 3-3, fixture 3-1 is packed on the cover plate 2, groove 3-1-1,3-1-2 that screens spring 3-3 is installed are arranged on the fixture 3-1, groove 3-2-1,3-2-2 that screens spring 3-3 is installed are arranged on the movable part 3-2, and movable part 3-2 is connected with fixture 3-1 by screens spring 3-3; The top of movable part 3-2 is positioned at screens control hole 2-1, and the bottom of movable part 3-2 is grab 3-2-4, and its hook face 3-2-5 snaps into the bottom of well seat 1.Like this simple in structure, easy to use, theftproof performance is good.

Referring to Fig. 5,7, the movable part 3-2 top of described positioner 3 is a column handle 3-2-3, to make things convenient for open operation.

Referring to Fig. 5,6,7, the grab 3-2-4 of the movable part 3-2 bottom of described positioner 3 is an inclined-plane near the side 3-2-6 of well seat 1.

Referring to Fig. 1,3,5,6,7, the grab 3-2-4 of the movable part 3-2 bottom of described positioner 3 is near the inclined-plane of the side 3-2-6 of well seat 1, with the angle of vertical direction less than 40 °, avoid installing in the process of cover plate, resistance is excessive.

Referring to Fig. 1,7, this anti-stealing manhole cover in use, at first that well seat 1 is fixing, positioner 3 fixture 3-1 are welded or are screwed on cover plate 2, the end of screens spring 3-3 is fixed on the fixture 3-1 by groove 3-1-2, and positioner 3 movable part 3-2 are connected with fixture 3-1 by screens spring 3-3; Movable part 3-2 bottom is grab 3-2-4, and grab 3-2-4 is the inclined-plane by the side 3-2-6 of well seat 1.When cover plate 2 is installed, directly cover plate 2 is pressed into well seat 1, utilize the inclined-plane 3-2-6 of grab 3-2-4,3-2-4 inwardly pushes away with grab, after being pressed onto the appropriate location, under screens spring 3-3 effect, grab 3-2-4 outwards resets, and hooks well seat 1 bottom, thereby cover plate 2 is fixed in the well seat 1.Positioner 3 has at least two to be distributed on the cover plate 2, blocks cover plate 2 from different directions.Be difficult for taking out.

When needs take out cover plate 2, special tool 4 is inserted from screens control hole 2-1, be enclosed within on the column handle 3-2-4 on movable part 3-2 top of positioner 3, prize movable part 3-2, grab 3-2-4 is inwardly moved, no longer hook well seat 1, thereby cover plate 2 can be taken out easily.

The utlity model has good, the easy to use advantage of theftproof performance.

Claims

1, a kind of anti-stealing manhole cover comprises well seat (1) and cover plate (2), it is characterized in that:

A, cover plate (2) have equally distributed at least two positioners (3) and screens control hole (2-1);

B, positioner (3) comprise fixture (3-1), movable part (3-2) and screens spring (3-3), fixture (3-1) is packed on the cover plate (2), the groove (3-1-1,3-1-2) that screens spring (3-3) is installed is arranged on the fixture (3-1), the groove (3-2-1,3-2-2) that screens spring (3-3) is installed is arranged on the movable part (3-2), and movable part (3-2) is connected with fixture (3-1) by screens spring (3-3);

The top of c, movable part (3-2) is positioned at screens control hole (2-1), and the bottom of movable part (3-2) is grab (3-2-4), and its hook face (3-2-5) snaps into the bottom of well seat (1).

2, anti-stealing manhole cover as claimed in claim 1 is characterized in that: movable part (3-2) top of described positioner (3) is a column handle (3-2-3).

3, anti-stealing manhole cover as claimed in claim 1 or 2 is characterized in that: the grab (3-2-4) of movable part (3-2) bottom of described positioner (3) is an inclined-plane near the side (3-2-6) of well seat (1).

4, anti-stealing manhole cover as claimed in claim 3 is characterized in that: the grab (3-2-4) of movable part (3-2) bottom of described positioner (3) is near the inclined-plane of the side (3-2-6) of well seat (1), with the angle of vertical direction less than 40 °.