CN2393967Y

CN2393967Y - Safety lock for locking manhole cover

Info

Publication number: CN2393967Y
Application number: CN 99235071
Authority: CN
Inventors: 李建平
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-28
Filing date: 1999-10-28
Publication date: 2000-08-30
Anticipated expiration: 2009-10-28

Abstract

The utility model relates to a theftproof safety lock for a manhole cover, which is composed of a lock core part, a lock rod part and a lock head part, wherein the utility model uses a locking device with mechanical transmission and selects a special tool to lock and unlock the lock. The utility model has the advantages of simple structure, convenient unlocking and high theftproof performance, the locking device is firm and hidden, and the utility model is a necessary theftproof safety product for the manhole cover for underground passages of street water supply, pollution discharge, cables, etc. in large, middle and small cities at present.

Description

The manhole cover anti-theft safety lock

The utility model relates to a kind of manhole cover anti-theft safety lock.

Existing city, particularly stolen case often appears in the well lid of underground passages such as the feedwater of large and medium-sized avenue, blowdown, cable, thereby social communal facility safety is caused great harm, the underground well lid that has is also because of being subjected to the extruding of heavy vehicle for a long time, make it be easy to generate dislocation or renovate, so also can cause generation problems such as the injuring without reason of walk night of pedestrian or the accidents of driving a vehicle.Continuous appearance has for above-mentioned reasons coverd with one deck shade often can for virtually the city anti-theft security.

The purpose of this utility model is to be provided with a kind of locking device of taking mechanical transfer, and selects special tool to finish and close and open, and its theftproof performance is strong, and locking device was both firm, hidden again manhole cover anti-theft safety lock.

The utility model is achieved in that it is to be grouped into by lock core part, locking bar part and lock head, and lock core partly is to be made of shell, lock core main shaft, transmission gear, braking wheel in age, balance gear and cam; Locking bar partly is to be made of support, outer sleeve, spring and locking bar; Tapered end partly is to constitute by opening knee and Cross lock, and lock core partly takes mechanical meshing locking to be installed in the well lid middle position, and by being bolted on the well lid; Locking bar partly relies on mechanical transfer and lock core partly to form cross and docks, and is fixed on the front and back of well lid respectively by bolt and support, about four sides; The unlatching knee two ends of tapered end part are provided with difform Cross lock respectively, are used for finishing specially opening and closing lock core part and locking bar part.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model master TV structure generalized section.

Fig. 2 is that the utility model is looked up the structural profile schematic diagram.

As shown in Figure 1, 2, the utility model is to be grouped into by lock core part, locking bar part and lock head, and lock core partly is to be made of shell 1, lock core main shaft 2, transmission gear 3, spragging gear 4, balance gear 5 and cam 6; Locking bar partly is to be made of support 7, outer sleeve 8, spring 9, locking bar 10; Tapered end partly is to constitute by opening knee 11 and

Cross lock

12,13, and shell 1 is a cylinder, by the middle position of bolt 14 fastening devicess at well lid 15, is set to two positions in it outward, and the upper part is provided with transmits gear 3, spragging gear 4 and balance gear 5; Following position is provided with cam 6, center in the shell 1 is equipped with lock core main shaft 2, fixedly connected with cam 6 in the bottom of lock core main shaft 2, the fixedly sleeved transmission gear 3 of intermediate ends, and it is mutually meshing with the spragging gear 4 of a side by transmitting gear 3, its opposite side is mutually meshing with balance gear 5: the center of well lid 15 is provided with breach 16, be connected with dust cap 17 in the breach 16, the front and back of well lid 15, about the right-angled intersection position of four sides be fixedly connected with support 7 by bolt 18 respectively, support 7 is fixedly connected with outer sleeve 8 respectively, device has spring 9 in the outer sleeve 8, and by spring 9 socket locking bars 10, one end of locking bar 10 respectively the breach by shell 1 19 directly and cam 6 connect, its other end extends respectively in the cement walling crib 20 all around, intermediate ends at locking bar 10 also is provided with spring pin 21, and spring pin 21 is used for fixing an end of spring 9; The upper end of lock core main shaft 2 is set to cross key, and puts in the breach 16 of center of well lid 15, and with breach 16 in the dust cap 17 that spins cover; The two ends of opening knee 11 are fixed with

variform Cross lock

12,13 respectively, and finish opening and closing by Cross

lock

12,13 respectively.When an end of opening knee puts in the breach of well lid, but dust cap is taken out in turn, when the other end of opening knee puts in the breach of well lid, but turn lock core main shaft, at this moment under the drive of lock core main shaft, travelling gear and cam rotate simultaneously, and spragging gear stirred by travelling gear and balance gear is finished forward and reverse rotation, and cam is stirred locking bar, and locking bar is finished under the effect of cam and spring and stretched into and withdraw from.

The utility model has the advantages that the locking device that adopts mechanical transfer, and select special tool to finish and close and open, it is simple in structure, open operation is convenient, and theftproof performance is strong, locking device was both firm, and was hidden again, was the essential product of the manhole cover anti-theft safety of underground passages such as vast large, medium and small avenue feedwater at present, blowdown, cable.

Claims

1, a kind of manhole cover anti-theft safety lock is characterized in that: it is to be grouped into by lock core part, locking bar part and lock head, and lock core partly is to be made of shell 1, lock core main shaft 2, transmission gear 3, spragging gear 4, balance gear 5 and cam 6; Locking bar partly is to be made of support 7, outer sleeve 8, spring 9, locking bar 10; Tapered end partly is to constitute by opening knee 11 and Cross lock 12,13, and lock core partly takes mechanical meshing locking to be installed in the middle position of well lid 15, and is fixed on the well lid 15 by bolt 14; Locking bar partly relies on mechanical transfer and lock core partly to form cross and docks, and is fixed on all around four sides of well lid 15 respectively by bolt 18 and support 7; Unlatching knee 11 two ends of tapered end part are provided with difform Cross lock 12,13 respectively, are used for finishing specially opening and closing lock core part and locking bar part.

2, manhole cover anti-theft safety lock according to claim 1, it is characterized in that: the shell 1 of lock core part is cylinder, outer by the middle position of bolt 14 fastening devicess at well lid 15, be set to two positions in it, the upper part is provided with transmits gear 3, spragging gear 4 and balance gear 5, following position is provided with cam 6, center in the shell 1 is equipped with lock core main shaft 2, fixedly connected with cam 6 in the bottom of lock core main shaft 2, the fixedly sleeved transmission gear 3 of intermediate ends, and mutually meshing by transmitting gear 3 with the spragging gear 4 of a side, its opposite side is mutually meshing with balance gear 5.

3, manhole cover anti-theft safety lock according to claim 1, it is characterized in that: the center of well lid 15 is provided with breach 16, be connected with dust cap 17 in the breach 16, the right-angled intersection position of all around four sides of well lid 15 is fixedly connected with the support 7 of locking bar part respectively by bolt 18, support 7 is fixedly connected with outer sleeve 8 respectively, device has spring 9 in the outer sleeve 8, and by spring 9 socket locking bars 10, one end of locking bar 10 breach by shell 1 19 respectively directly connects with cam 6, and its other end extends respectively in the cement walling crib 20 all around.

4, manhole cover anti-theft safety lock according to claim 1 and 2 is characterized in that: the upper end of the lock core main shaft 2 of lock core part is set to cross key, and puts in the breach 16 of center of well lid 15, and with breach 16 in the dust cap 17 that spins cover.