CN2533227Y

CN2533227Y - Special manhole cover theft proofing device

Info

Publication number: CN2533227Y
Application number: CN 02222251
Authority: CN
Inventors: 唐先云
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-15
Filing date: 2002-04-15
Publication date: 2003-01-29
Anticipated expiration: 2012-04-15

Abstract

The utility model relates to a special theft protection device for stealing well covers, which is mainly used for sewer stealing wells in existence and without the theft protection device, is arranged under the well cover and consists of a rotary hook and a fastened hook. The rotary hook consists of a bearing piece, a taper bolt, a flat gasket, a spring gasket, two locknuts and a rotary hook. Movement rule of the rotary hook takes the taper bolt as a circle center to rotate by 90 DEG. The fastening hook is fastened opposite the rotary hook by the bolt. When using the utility model, the fastening hook hooks an inner side of the well head at first; then a taper head of the taper bolt is covered by a taper handle firmly to rotate by 90 DEG to enable that the rotary hook hooks the other side of the inner well; the well cover is locked completely. Rotating by 90 DEG reversely opens the well cover.

Description

Inspection shaft covers special-purpose anti-theft device

One. technical field:

The utility model is that a kind of inspection shaft covers special-purpose anti-theft device, the manhole cover that does not have anti-theft feature that is particularly using.

Two. technical background:

The inspection shaft lid that is now using at present comprises telecommunications, electric power, limited TV, the inspection shaft lid of municipal sewer does not all have anti-theft feature, often by the people for stealing, stay black hole one by one, form the city trap, the pedestrian falls down in an unguarded moment, and the lighter is injured, weight person's death, wheel falls down and can not extricate oneself, the lighter blocks the traffic, and weight person is bumped against with the car that knocks into the back, and causes the major accident of car crash.

Three. summary of the invention:

According to the inspection shaft drowning that is using anti-theft feature is arranged, often stolen, cause all beyond thought troubles.In this case, a kind of inspection shaft of ad hoc meter covers special-purpose anti-theft device

This inspection shaft covers special-purpose anti-theft device, main antitheft to as if the inspection shaft lid that using, it be mounted in well lid below, mainly combine by stay hook and rotary hook two parts, stay hook is by two ends that are bolted to below the well lid, rotary hook is by supporting member, taper bolt, plain washer, spring washer, two nuts, rotary hook combines, wherein, on the screw rod of taper bolt flat side, the rotary hook of Pei Heing is flat square hole with it, and respectively there is a hole in the middle of the supporting member and two ends, and middle via hole is to wear for taper bolt, plain washer is installed on the screw rod successively, spring washer is used nut tightening, and the rotary hook nut tightening of flat square hole is installed again, make supporting member and taper bolt under the effect of tapering handle, become rotatable mechanism, make stay hook and rotary hook hook the interior both sides of wellhole, reach the purpose of locked well lid.

Four. description of drawings:

Fig. 1 is a front view of the present utility model

Fig. 2 is a left view of the present utility model

Fig. 3 is the utility model taper bolt schematic diagram

Five. the specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

As Figure 1-3, inspection shaft of the present utility model covers special-purpose anti-theft device, be the diameter line both sides that are fixed on below the well lid (1), the stay hook of this anti-theft device (10) wherein is fixed on two bolts (11) and hooks the interior one side of well head below the well lid (1), rotary hook is by supporting member (2), taper bolt (4), plain washer (6), spring washer (7), nut (8), rotary hook (9) combines.Be fixed on the following another side of well lid (1) by two bolts (3), tapering handle (5) falls from the via hole of well lid (1), after the tapering head tight fit of taper bolt (4), rotate tapering handle (5), friction tight with it taper bolt (4) rotation, driven rotary hook (9) rotates, and hooks the another side in the well head, reaches the purpose of locked well lid.Take off tapering handle (5), cover plastic closures lid (12), this moment, well lid became locking state.

The utility model great advantage is, and is simple, and practicality is easy to manufacture, with low cost, the package unit cost Only need about 12 yuan.

Claims

1. inspection shaft covers special-purpose anti-theft device, mainly form by stay hook and rotary hook, it is characterized in that inspection shaft of the present utility model covers special-purpose anti-theft device, be fixed on below the inspection shaft lid (1), wherein stay hook (10) is fixed on below the well lid with two bolts (11), rotary hook is by supporting member (2), taper bolt (4), plain washer (6), spring washer (7), nut (8), rotary hook (9) combines, and with set bolt (3) supporting member (2) is fixed on below the well lid, and well lid (1) bores a via hole, be used for tapering handle (5) and pass through, add plastic closures lid (12) on the via hole.

2. inspection shaft according to claim 1 covers special-purpose anti-theft device, its maximum feature is that taper bolt (4) is most important with the taper fit of tapering handle (5), and taper fit is bad, can't open well lid, be flat side on the screw rod of taper bolt (5), cooperate with the flat square hole of rotary hook (9).

3. inspection shaft according to claim 1 covers special-purpose anti-theft device, it is characterized in that, there is a via hole in supporting member (2) central authorities, taper bolt (4) is worn, plain washer (6) is installed successively, turn (7), nut (8), it is the rotatable mechanism in the center of circle with taper bolt (4) that rotary hook (9) is formed one, hooks the interior one side of well head earlier by stay hook (10) during work, tapering handle (5) entangles the tapering head of taper bolt (4) firm, revolve and turn 90 degrees, tapering hook (9) hooks the another side in the well head, at this moment, the diameter both sides of well lid (1) are hooked, and well lid is by locked.