CN201666053U - Locking device of anti-theft manhole cover - Google Patents

Abstract

The utility model provides a locking device of an anti-theft manhole cover. The locking device of the anti-theft manhole cover consists of a manhole cover, a support and a locking device. The locking device consists of a lock cylinder, a lock cylinder sleeve, a lock head and a locking dog, wherein the lock head is welded together with the lock cylinder; the lock cylinder sleeve is sheathed outside the lock cylinder and is fixed together with the manhole cover, thus avoiding the situation that the manhole cover is free of locking due to maloperation. Besides, after long-term use, the lock cylinder does not loosen and the manhole cover can be opened only with a special opener. The locking device of the anti-theft manhole cover is stronger in anti-theft performance, and can avoid the theft and damage of underground pipelines and facilities, as well as subsequent potential safety troubles. After opened, the manhole cover does not obstruct or affect the work of maintenance personnel. Without an opening hole or gap, the manhole cover and the support are good in fit sealing and strong in resistance to prize, corrosion, foul air escape and frost. Rainwater, sewage and silt are not easy to enter the manhole.

Description

A kind of locking device of anti-stealing manhole cover

Technical field

The utility model relates to a kind of anti-theft locking device that is applied to all kinds of underground utilities manholes with manhole covers, be meant especially a kind of easy to use, but a kind of locking device of the anti-stealing manhole cover that must just can open with the special opening device.

Background technology

The stolen phenomenon of well lid of all kinds of underground utilities manholes in city happens occasionally, and the personal injury of Yin Faing, vehicle are damaged and stolen, the impaired also common report of incident of underground utilities facility therefrom, and the loss that causes is huge.For preventing that the stolen all kinds of anti-stealing manhole covers of producing that design of well lid from arising at the historic moment, useful hinge or chain link together well lid and bearing; Have on well lid lockset is installed; Nonmetals such as useful steel fiber concrete or resin are made manhole cover.Though certain antitheft effect is arranged, but still can not prevent effectively that well lid is stolen.The thief still can destroy chain, hinge is stolen well lid; The locking device of some well lid, though need be the socket wrench specially adapted for it unlatching of special shapes such as polygon or semicircle with endoporus, the thief uses other instrument also can open, steal well lid; The manhole cover that some nonmetals are made, because of the recyclable utilization of its metallic framework, the existing pilferage target that also becomes the thief, even wherein there is not metallic framework, for stealing underground utilities facility such as cable, valve etc., the thief also can open it.Thereby cause underground installation stolen, undermined and caused potential safety hazard.In addition, some locking device is after unlatching, and well lid can not overturn 180 °, can hinder and the job execution that influences the attendant; The locking device structure complexity that has, and easy-to-rust or stopped up by silt stuck, opens very difficult, increase attendant's labour intensity." anti-stealing manhole cover (patent No. is 200510040656.7) that special opening and locking device are arranged " of our company's development 2005, when opening with the locking well lid with the special opening device, because of clockwise or inverse clock all rotatable, easily maloperation, cause error and do not pin well lid, the lock core of its locking device of while can take place to become flexible after using for a long time, when the slit is big between well lid weight is than light and well lid and bearing, easily by other instrument rotation, unlatching.

Summary of the invention

The purpose of this utility model just is to overcome the defective of background technology, and a kind of special opening device that do not have is provided, and uses other instrument just can't open and can not pin because of maloperation a kind of locking device of the anti-stealing manhole cover of well lid.

The purpose of this utility model is realized by following scheme:

The utility model is made up of well lid, bearing and locking device.Locking device is made of lock core, lock core cover, tapered end and dead bolt, and tapered end and lock core weld together, and is cylinder or truncated cone-shaped shrinkage pool in the tapered end, and projection is arranged at the bottom, and the lock core cover is enclosed within the lock core outside, is fixed together with well lid.

Lock core cover of the present utility model lower end outside weld is connected to block.

Be with spring on the lock core of the present utility model, one on spring colludes on block, and collude on dead bolt the other end, insert in the seat groove to keep dead bolt, and can only half-twist.

There is silking lock core of the present utility model lower end, is furnished with pad, nut, to install and fix spring and dead bolt.

Dead bolt of the present utility model is that long lumbar hole cooperates with lock core, so that dead bolt and lock core can together rotate.

Pad of the present utility model is for spending blue pad, to prevent nut loosening.

The utility model is compared with background technology, has following advantage and effect:

Can not cause not locking well lid because of maloperation, and use rear lock core can not become flexible for a long time, must just can open well lid with the special opening device, theftproof performance is stronger, can avoid the underground utilities facility stolen, undermined and caused potential safety hazard.After opening, well lid can not hinder and the job execution that influences the attendant.No open hole and unlatching breach on well lid and the bearing, lid is good with the seat fitted seal, and pick-proof, anticorrosion, anti-foul smell leak strong with resistance to frost, and rainwater, sewage and silt are difficult for entering in the manhole.Therefore, the utility model has excellent popularization and application prospect as a kind of novel locking device of anti-stealing manhole cover.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Shown in the figure: 1 is that well lid, 2 is that nut, 3 is that pad, 4 is that spring, 5 is that lock core cover, 6 is that lock core, 7 is that tapered end, 8 is that block, 9 is that dead bolt, 10 is that a groove, 11 is a bearing.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.The utility model is not limited to following examples.

With reference to accompanying drawing, the utility model is made up of well lid 1, bearing 11, locking device.Locking device is made of lock core 6, lock core cover 5, tapered end 7, tapered end 7 welds together with lock core 6, is cylinder or truncated cone-shaped shrinkage pool in the tapered end 7, and projection is arranged at the bottom, lock core cover 5 is enclosed within lock core 6 outsides, is fixed together loosening to prevent using rear lock core to take place for a long time with well lid.Block 8 is welded on the lock core cover 5, and spring 4 is enclosed within on the lock core 6, and 4 one on spring colludes on block 8, collude on dead bolt 9 other end, and under elastic reaction, dead bolt keeps inserting in the seat groove 10 always, and under the position-limiting action of spring 4, dead bolt 9 can only can not cause maloperation by half-twist.There is silking lock core 6 lower ends, are furnished with pad 3, nut 2, install and fix spring 4 and dead bolt 9.Dead bolt 9 and lock core 6 are for long lumbar hole cooperates, so that dead bolt 9 can together rotate with lock core 6.For preventing nut loosening, pad 3 is for spending blue pad.When opening well lid, only need the special opening device in the patented product " anti-stealing manhole cover that special opening and locking device are arranged " of our company's development is inserted in the tapered end 7, and overcome the elastic force of spring 4, inverse clock half-twist, make dead bolt 9 leave a groove 10, upwards mention then and can open well lid.Attendant's job execution finishes, and only need mention well lid and cover on the bearing, and lock core turns clockwise 90 ° automatically, and dead bolt 9 is inserted in the seat groove 10, well lid is pinned can take off the special opening device.

Claims (6)

1. a kind of locking device of an anti-stealing manhole cover, form by well lid, bearing and locking device, it is characterized in that locking device is made of with dead bolt (9) lock core (6), lock core cover (5), tapered end (7), tapered end (7) welds together with lock core (6), lock core cover (5) is enclosed within lock core (6) outside, is fixed together with well lid (1).

2. a kind of locking device of anti-stealing manhole cover according to claim 1 is characterized in that block (8) is arranged outside the lock core cover (5).

3. a kind of locking device of anti-stealing manhole cover according to claim 1 and 2 is characterized in that being with on the lock core (6) spring (4), and (4) one on spring colludes on block (8), and collude on dead bolt (9) other end.

4. a kind of locking device of anti-stealing manhole cover according to claim 3 is characterized in that there is silking lock core (6) lower end, is furnished with pad (3), nut (2), installs and fixes spring (4) and dead bolt (9).

5. a kind of locking device of anti-stealing manhole cover according to claim 3 is characterized in that dead bolt (9) cooperates for long lumbar hole with lock core (6).

6. a kind of locking device of anti-stealing manhole cover according to claim 4 is characterized in that pad (3) is for spending blue pad.