CN2587935Y

CN2587935Y - Hinge structure for preventing manhole over from accidental close

Info

Publication number: CN2587935Y
Application number: CN 02260452
Authority: CN
Inventors: 许政伟
Original assignee: Jixin International Trading (shanghai) Co Ltd
Current assignee: Jixin International Trading (shanghai) Co Ltd
Priority date: 2002-09-29
Filing date: 2002-09-29
Publication date: 2003-11-26
Anticipated expiration: 2012-09-29

Abstract

The utility model aims to design a hinge structure used for preventing a manhole over from accidental close and connecting a well ring and the manhole over positioned on the well ring. The manhole over and the well ring are hinged via a clamping pin and a clamping groove, the clamping pin is fixedly arranged in the well ring, and the clamping groove is arranged on the manhole over. The clamping groove comprises a rotating groove and an embedded groove, and the rotating groove and the embedded groove are mutually communicated. The hinge structure can preventing the manhole over after opened from disengaging from the well ring, the manhole over can be only closed by an operator lifting up the manhole over, the unexpected close of the manhole over is avoided, and a worker in a sewage well is prevented from damage.

Description

Prevent the unexpected closed articulated structure of inspection shaft lid

(1) technical field

The utility model relates to a kind of articulated structure, relates in particular to a kind of inspection shaft that is used for and prevents that inspection shaft from covering at the articulated structure of opening the unexpected closure in back.

(2) background technology

In the operation element of inspection shaft, the inspection shaft lid is unlocked through regular meeting in the construction of town road and road.Under existing conditions, the inspection shaft lid is placed on one side usually, so just can influence the enforcement of vehicular traffic, brings some inconvenience for the normal operation of traffic.Also have a kind of inspection shaft to cover after unlatching, because hinged can not well the fixing between well lid and the walling crib, therefore after blowing or being subjected to interference of some vibrations factors, be easy to make well lid to close suddenly and injure the staff who in inspection shaft, constructs by a crashing object, cause some unexpected accidents.

(3) utility model content

The purpose of this utility model provides a kind of inspection shaft that prevents and covers at the articulated structure of opening the unexpected closure in back.

For reaching above-mentioned purpose, the unexpected closed hinge arrangement of inspection shaft lid that prevents of the present utility model, be used to connect walling crib and the well lid that is seated on the walling crib, it is characterized in that described well lid and walling crib are by the cooperation that is hinged of bayonet lock and draw-in groove, described bayonet lock is fixedly arranged in the walling crib, described draw-in groove is located on the well lid, and described draw-in groove comprises a rotation slot and embedded groove, and described rotation slot and embedded groove interconnect.

Adopt such structure, after inspection shaft lid is opened, be hinged by the embedded groove of draw-in groove on bayonet lock in the walling crib and the well lid and fix, only will cover and can close after up mentioning operating personnel, so just, avoid the unexpected closed of well lid, prevented to injure by a crashing object the staff who in inspection shaft, constructs.

For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 is the longitudinal sectional view of well lid when opening half state.

Longitudinal sectional view when Fig. 2 is the well lid complete opening

(5) specific embodiment

The articulated structure that prevents the unexpected closure of inspection shaft lid as illustrated in fig. 1 and 2, well lid 2 and walling crib 1 are by bayonet lock 5 and draw-in groove (comprise a rotation slot 3 and embedded groove 4, and the interconnect) cooperation that is hinged, and bayonet lock is fixed in the walling crib 1, and draw-in groove is located on the well lid 2.

When opening well lid 2, rotation slot 3 freely rotates around bayonet lock 5 earlier, and when waiting to forward to rotation slot 3 with position that embedded groove 4 is communicated with, release well lid 2, well lid 2 will fall to that embedded groove 3 is interior also to be fixed; If will close well lid 2, must earlier well lid 2 up be mentioned, make bayonet lock 5 disengaging embedded grooves 4 and enter the well lids 2 that can close in the rotation slot 3.

Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.

Claims

1. one kind prevents the unexpected closed articulated structure of inspection shaft lid, be used to connect walling crib and the well lid that is seated on the walling crib, it is characterized in that described well lid and walling crib are by the cooperation that is hinged of bayonet lock and draw-in groove, described bayonet lock is fixedly arranged in the walling crib, described draw-in groove is located on the well lid, described draw-in groove comprises a rotation slot and embedded groove, and described rotation slot and embedded groove interconnect.