CN2506696Y

CN2506696Y - Theft-proof safety manhole cover

Info

Publication number: CN2506696Y
Application number: CN 01234073
Authority: CN
Inventors: 胡君; 韩玉琢; 鲁百平; 杨进; 王国军; 朱洪儒
Original assignee: 胡君
Priority date: 2001-08-17
Filing date: 2001-08-17
Publication date: 2002-08-21
Anticipated expiration: 2011-08-17

Abstract

The utility model discloses a theft-proof safety manhole cover which comprises a circular manhole cover and a manhole ring. A clamping block which is outwards projected is arranged on an annular bulge on the bottom of the manhole cover, and a notch which is corresponding to the clamping block of the manhole cover is arranged on an annular step of the well ring. The lamping block of the manhole cover falls into the bottom of the annular step of the manhole ring by the notch which is corresponding to the manhole ring, the manhole cover and the manhole ring are tightly fixed by rotating the clamping block for a certain angle, and the use is safe. The bottom of the manhole cover is provided with a strip-shaped locking pin, and a locked groove which is corresponding to the locking pin is arranged on the annular step of the manhole ring. When the position of the locking pin is aligned to the locked groove, the locking pin falls into the locked groove because of the gravity action to make the manhole cover rotate not rotate, and the locking is realized. The utility model has simple and practical structure, and better realizes a theft-proof function.

Description

The anti-theft security manhole cover

The utility model relates to a kind of anti-theft security manhole cover, and it belongs to the manhole cover of water supply and sewerage pipeline, various line cords, and it comprises well lid, walling crib.

The water supply and sewerage pipeline of prior art, the manhole cover of various line cords are made up of well lid and walling crib two parts, and walling crib is fixed on the ground of well head, and well lid is put on the recessed circular step of walling crib, rely on the recessed circular step of walling crib and set level well lid.Because latch-up-free device between well lid and the walling crib often because of a variety of causes makes well lid dislocation or stolen losing, causes personal injury and vehicle damage accident.The manhole cover that the locking measure taked is also arranged, as well lid and walling crib adopt that bearing pin links together, that well lid is connected walling crib by iron chains is first-class, but antitheft and poor safety performance, perhaps complex structure is not easy to apply.

It is a kind of simple in structure that the purpose of this utility model is to provide, antitheft and security performance anti-theft security manhole cover strong, easy to install and use.

The purpose of this utility model is achieved through the following technical solutions:

The utility model comprises circular well lid and walling crib, and circular projection is arranged at the bottom of well lid, and there is circular step the walling crib inboard, and well lid is placed on the walling crib circular step, and the circular projection of well lid is in walling crib circular step inboard; It is characterized in that: have two fixture blocks that protrude laterally on the circular projection of well lid at least, any angle that faces mutually between two fixture blocks is less than or equals 180 spends; Have on the walling crib circular step and the corresponding notch of well lid fixture block, walling crib circular step bottom is provided with a locking limited block at least, and walling crib circular step bottom also is provided with the limited block of uncapping at the edge of a notch at least; One strip lock pin groove is arranged at the well lid bottom, one end of lock pin groove is in the outside of the circular projection of well lid, the other end is in the inboard of the circular projection of well lid, fix the lock pin that can slide up and down by the long pin of medial extremity in this lock pin groove, on the walling crib circular step, have at least one with the corresponding locked groove of lock pin, close on the strip lock pin groove hole of uncapping on the well lid.

As further improvement of the utility model, also have the reinforcing rib of some projectioies in the inboard of the circular projection in the bottom of well lid, the lock pin groove and the hole of uncapping are separated by certain protruding reinforcing rib.

When manhole cover, well lid can be dropped on the walling crib circular step when the well lid fixture block is aimed at the walling crib notch, rotating well cover makes fixture block close on the locking limited block can not be rotated further the time, and this moment, lock pin was just aimed at locked groove, can not rotate and realizes locking because action of gravity makes lock pin fall in the locked groove well lid; When opening well lid, need " J " shape instrument of uncapping is inserted the hole of uncapping, lock pin is colluded in the lock pin groove of well lid into and rotating well cover, the well lid fixture block closes on when the limited block of uncapping can not be rotated further can mention well lid.

The utility model has following advantage compared to existing technology:

1, adopt fixture block to fix between well lid and the walling crib, well lid is fixed, and is safe in utilization; 2, its locking mechanism adopts the lock pin locking, and the layman does not use special tool to be difficult to open well lid, and is simple and practical, realized anti-theft feature preferably; 3, except lock pin and fixing pin thereof, but all one-step casting moulding of well lid and walling crib have the low advantage of cost simple in structure.

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

Fig. 1 is the utility model bottom surface lock-out state structural representation;

Fig. 2 is the AA sectional view;

Fig. 3 is the BB sectional view;

Fig. 4 is the utility model instrument of uncapping.

As shown in Figure 1 and Figure 2, the utility model comprises circular well lid 4 and walling crib 3, circular projection 2 is arranged at the bottom of well lid 4, side also has six reinforcing ribs 9 that are radial projection within it, there is circular step 12 walling crib 3 inboards, well lid 4 is placed on walling crib 3 circular steps 12, and the circular projection 2 of well lid 4 is in walling crib 3 circular steps 12 inboards; On the circular projection 2 of well lid 4 three equally distributed fixture blocks 6 that protrude are laterally arranged, have on walling crib 3 circular steps 12 and fixture block 6 corresponding three notches 7, the bottom of walling crib 3 is provided with a locking limited block 5 respectively at a side equidistance place of each notch 7, be provided with the limited block 8 of uncapping at the opposite side edge of each notch 7.

As Fig. 1, shown in Figure 3, a reinforcing rib 9 is closed in well lid 4 bottoms a strip lock pin groove 14, in the opposite side of this reinforcing rib 9 hole 1 of uncapping, one end of lock pin groove 14 is in the outside of the circular projection 2 of well lid 4, in addition end is in the inboard of the circular projection 2 of well lid 4, fix the lock pin 11 that can slide up and down by the long pin 10 of medial extremity in this lock pin groove 14, on the circular step 12 of walling crib 3, have one with the corresponding locked groove 13 of lock pin.

When manhole cover 4, well lid 4 can fall on walling crib 3 circular steps 12 when well lid 4 fixture blocks 6 are aimed at walling crib 3 notches 7, rotating well cover 4 makes fixture block 6 close on locking limited block 5 can not be rotated further the time, this moment, lock pin 11 was just aimed at locked groove 13, can not rotate the realization locking because action of gravity makes lock pin 11 fall into locked groove 13 interior well lids 4; When opening well lid 4, the instrument of need uncapping " J " shape as shown in Figure 4 inserts and closes in the hole 1 of uncapping of lock pin, lock pin 11 is colluded into lock pin the groove 14 interior and rotating well covers 4 of well lid 4, and well lid fixture block 6 closes on when the limited block 8 of uncapping can not be rotated further can mention well lid 4.

Claims

1, a kind of anti-theft security manhole cover, comprise circular well lid and walling crib, circular projection is arranged at the bottom of well lid, there is circular step the walling crib inboard, well lid is placed on the walling crib circular step, the circular projection of well lid is characterized in that in walling crib circular step inboard: have two fixture blocks (6) that protrude laterally on well lid (4) circular protruding (2) rises at least, any angle that faces mutually between two fixture blocks (6) is less than or equals 180 degree; Have on walling crib (3) circular step (12) and the corresponding notch of well lid fixture block (6) (7), walling crib (3) circular step (12) bottom is provided with a locking limited block (5) at least, walling crib (3) circular step (12) bottom also is provided with the limited block of uncapping (8) at the edge of a notch (7) at least: a strip lock pin groove (14) is arranged at well lid (4) bottom, one end of lock pin groove (14) is in the outside of the circular projection (2) of well lid (4), the other end is in the inboard of the projection (2) of ring-type, fix the lock pin (11) that can slide up and down by the long pin (10) of medial extremity in this lock pin groove (14), on walling crib (3) circular step (12), have at least one with the corresponding locked groove of lock pin (11) (13), close on strip lock pin groove (14) hole (1) of uncapping on the well lid.

2, anti-theft security manhole cover according to claim 1, it is characterized in that: the inboard of circular projection (2) also has the reinforcing rib (9) of some projectioies in the bottom of well lid (4), and lock pin groove (14) and the hole of uncapping (1) are separated by certain protruding reinforcing rib (9).