CN2212606Y

CN2212606Y - Theft-proof safety manhole cover

Info

Publication number: CN2212606Y
Application number: CN 95203166
Authority: CN
Inventors: 汪飞龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-25
Filing date: 1995-02-25
Publication date: 1995-11-15
Anticipated expiration: 2005-02-25

Abstract

The utility model provides a theft-proof safety manhole cover which is mainly composed of a manhole base and a manhole cover. The theft-proof safety manhole cover is characterized in that a shaft pin is arranged on reinforcing ribs on the lower parts of the both sides of the manhole cover; a boss is arranged on the corresponding position of the inner side of the manhole base, and a transversal oblate slide slot for the shaft pin to insert is arranged on the inside wall. The utility model has the advantages of simple structure, easy fabrication, flexible and convenient use, small abrasions for each part, stable and reliable support after opening, etc.; the theft-proof safety manhole cover can not oscillate and displace when started and stopped. The theft-proof safety manhole cover is especially suitable as the shroud of the inspection manhole of underground pipelines, underground cables, etc. On traffic roads.

Description

Theft-proof safety manhole cover

The utility model relates to the overburden of a kind of hand-hole manhole or similar Kong Jing, especially a kind of anti-theft security well lid.

The manhole cover of going into that generally uses mostly separates with the well seat now, only is to cover in the above, is therefore very easily stolen by some people that are greedy for small gains and removes, and works the mischief for vehicle and pedestrian.Chinese patent CN2099144U discloses a kind of " anti-stealing manhole cover ", it is characterized in that on the basis of common well lid, increasing the circular arc frid that two radians equate, there is movable axis in the well lid outside, there is a lug that cooperates with movable axis well seat inboard, and the connecting pin by lug one side couples together the two circular arc frids under the well lid and the junction plate of well seat.Also had the triangular groove of positioning supports effect at its well lid upper surface.Though the anti-stealing manhole cover of this structure by the connection of elements such as connecting pin can prevent well lid pilferage, move, its complex structure, processing and manufacturing is had relatively high expectations, particularly circular arc frid and lug etc. will have certain intensity.And, easily producing swing and dislocation during switching because its tie point is in the top of round manhole cover, the wearing and tearing of circular arc frid and movable axis etc. are bigger.Its triangular groove has reduced the intensity of well lid on the one hand, also can turn easily because of wearing and tearing make support stable inadequately on the other hand.

The purpose of this utility model just is to overcome above-mentioned weak point of the prior art, provide a kind of simple in structure, processing and manufacturing is easy, uses flexible, convenient, each component wear is little, and keying can not be swung and misplace and be opened back supporting ﹠ stablizing, reliable anti-theft security well lid.

The purpose of this utility model can reach by implementing following technical proposal: install pivot pin on the reinforcing rib of well lid two bottom sides respectively, and being respectively equipped with boss in the inboard corresponding position of well seat, offering on its inside wall can be for the horizontal Long Circle chute of pivot pin insertion.When well lid opens and closes, slide and adjust its position in the pivot pin of both sides front and back in the Long Circle chute.After well lid is opened, support well lid, make it be difficult for upset by pivot pin and well seat edge.Described pivot pin is connected with the reinforcing rib of tapered middle and well lid bottom.In round manhole cover, pivot pin is located at two side lower parts of large semi-circular well lid string and is had on well lid and the corresponding breach of both sides boss, and its smaller part round manhole cover is fixed on the well seat.

Accompanying drawing 1 is the cross-sectional view of the utility model embodiment.

Accompanying drawing 2 is vertical views of the utility model embodiment.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.The movable well lid 2 of configuration large semicircle and the fixedly well lid 3 of small semicircle on annular well seat 1 are respectively fitted with the pivot pin 5 that is connected with tapered middle on the both sides reinforcing rib 4 under movable well lid 2 strings of large semicircle.Well seat 1 inboard is provided with boss 6 respectively corresponding to pivot pin 5 places, offers the microscler chute 7 of horizontal circle that inserts for pivot pin 5 on its inside wall.The string both sides of movable well lid 2 have and boss 6 corresponding breach 8.Opening or closing in the process of movable

well lid

2,5 of pivot pins slide in the middle of the microscler chute 7 of circle forward or backward, to adjust the space.When movable well lid 2 place openings, by pivot pin 5 and the microscler chute 7 of circle and fixedly well lid 3 give stable support.When movable well lid 2 place closed conditions, it and fixedly well lid 3 and both sides boss 6 close fit form the complete circle cover plate.This anti-theft security well lid can also dispose other locking device and be locked.

The utility model compared with prior art, have simple in structure, processing and manufacturing is easy, use flexibly, conveniently, each component wear is little, can not swing and misplace during keying, open the characteristics such as rear support is stable, reliable, especially be suitable as the covering of the maintenance hand-holes such as underground water, feed channel or underground electric wire, cable on the traffic route.

Claims

1, a kind of anti-theft security well lid, comprise well lid and well seat, the reinforcing rib (4) that it is characterized in that well lid (2) both sides, bottom is provided with pivot pin (5), and the inboard corresponding position of well seat is provided with boss (6), has the horizontal Long Circle chute (7) that inserts for pivot pin (5) on its inside wall.

2, anti-theft security well lid according to claim 1 is characterized in that pivot pin (5) is connected with reinforcing rib (4) with its tapered middle.

3, anti-theft security well lid according to claim 1 and 2, it is characterized in that annular well seat (1) is provided with movable well lid (2) of large semi-circular and the circular fixedly well lid (3) of smaller part, pivot pin (5) is located at the bottom of movable well lid (2) string both sides, and the both sides of movable well lid (2) string also have and the corresponding breach (8) of boss (6).