CN2130843Y

CN2130843Y - High-strength anti-theft manhole cover

Info

Publication number: CN2130843Y
Application number: CN 91206185
Authority: CN
Inventors: 文成福; 周康年
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-15
Filing date: 1991-04-15
Publication date: 1993-04-28
Anticipated expiration: 2001-04-15

Abstract

The utility model provides a high strength theftproof formula well lid, its wide application in water feeding, offal, natural gas, coal gas and communication underground cable well lid. It is composed of built-in lock, well ring, well cover and special key. It is characterized in that: the built-in lock is arranged below the well cover and is covered and hidden by an L-shaped baffle. And a special key is designed to be opened smoothly. By using the utility model, the underground facilities in cities and towns can be protected safely and harmlessly; but also can avoid the occurrence of unexpected traffic accidents caused by the loss or dislocation of the well cover.

Description

High-strength anti-theft well cover

The utility model is a kind of improved theft-proof type well lid.It is applicable to sluice well, following well, natural air-lock well, coal gas lock well and underground communication cable manhole cover.

The well lid of reality is mostly used non-anti-theft device.Even anti-stealing manhole cover is arranged, the shortcoming of existence is: 1, Suo structure is too simple, is opened by other instrument of human easily; 2, the lockhole that has is exposed, last a very long time, drench with rain, Exposure to Sunlight will soon get rusty, lose efficacy.

The purpose of this utility model is that a kind of improved theft-proof type well lid will be provided.It can be firm pattern manhole cover lock on walling crib, prevent that well lid from losing.And can successfully open with private key.

The purpose of this utility model is finished as follows: walling crib ［ 2 ］, well lid ［ 3 ］ are to form with the cast of HT20-40 grey cast-iron.The place of built-in lock is installed below the well lid ［ 3 ］, casts a boss, and dig the plane.Over there, be cast with two and chew the formula clamp.Be cast with A, B, C, D, English alphabet that E is different above all well lids ［ 3 ］.The dark seat ［ 7 ］ of built-in lock ［ 1 ］ is to use A ₃Material after the garden steel welding of thick B=10MM steel plate and diameter ∮=25MM, forms through machine again.Lock pin ［ 6 ］ processes with No. 45 round steel.And on big column, weld driving lever ［ 11 ］.Spring ［ 8 ］ is used ∮ 1.2MM, 65M _NSteel is made.After packing in key seat ［ 9 ］ hole, fill in lid ［ 10 ］.And spot welding lid ［ 10 ］ and lock ［ 9 ］ seam crossing, make lid ［ 10 ］ not in coming off.At last, the built-in lock that assembles ［ 1 ］ with four M12 screws ［ 7 ］ be fastened on well lid ［ 3 ］ below.In order to hide latent built-in lock ［ 1 ］, adopted A ₃Steel plate bends the L type baffle plate ［ 4 ］ that forms, and mills out the groove of five kinds of different height on vertical plane.L type baffle plate ［ 4 ］ is four M with fastening built-in lock ［ 1 ］ ₁₂Screw in two screws be fastened in passing on the built-in lock flange face.

The key ［ 12 ］ of private key ［ 5 ］ is made for No. 45 steel plates of B=4MM with thick, is welded on key axle ［ 13 ］ termination.Stationary magazine creel ［ 14 ］ is made with ∮ 18MM round steel pipe.One end welding open-work flange and handle ［ 19 ］, clamp of other end welding.Mill out a plane on the face of cylinder of key axle ［ 13 ］, indicate A, B, C, D, five English alphabets of E above.And, get out five blind holes, and mill out 1/3 circumference on its opposite.Key axle ［ 13 ］ when mobile, positions with pin ［ 16 ］ in stationary magazine creel ［ 14 ］.Spring ［ 17 ］ is used ∮ 1.2MM, 65M _NSteel wire is made.Stifled ［ 18 ］ are after installing pin ［ 16 ］ and spring ［ 17 ］, and the spot welding joint makes spring ［ 17 ］ not in coming off.Going up the inspection hole cover ［ 15 ］ that bonds at stationary magazine creel ［ 14 ］, is to make with the organic glass of thick B=2MM.

The utility model can not be caught in the rain corrosion because built-in lock ［ 1 ］ is located at below the well lid; Simultaneously, L type baffle plate ［ 4 ］ has been installed, others is not easy to find also do not know how to open, can be firm play antitheft effect; Secondly the key axle ［ 13 ］ of private key ［ 5 ］ is marked with A, B, C, D, five letters of E, and non-special staff does not understand what it means, so, further played safety effect.

The description of the drawings:

Fig. 1 is the utility model upward view

Fig. 2 is the A-A sectional view

Fig. 3 is the sectional view of the utility model private key 5

Fig. 4 is the vertical view of private key 5

Fig. 5 is the front view of the utility model L type baffle plate 4

Fig. 6 is the left view of L type baffle plate 4

Fig. 1, Fig. 2 are the situations after well lid pins, and can see that the lock pin of built-in lock ［ 6 ］ is stuck under the boss of walling crib ［ 2 ］.The formula clamp of chewing has blocked boss over there.At this moment, do not have private key ［ 5 ］, can't lift well lid.

Fig. 3 and Fig. 4 have illustrated the structure of private key ［ 5 ］.

Fig. 5 and Fig. 6 are a kind of in five kinds of L type baffle plates ［ 4 ］.According to A, B in the private key ［ 5 ］, C, D, E differing heights, mill out the groove on the L type baffle plate ［ 4 ］.

After casting and machine, become the well lid in our use.With built-in lock ［ 1 ］ with four M ₁₂Screw is fastening below it.(at this moment, supposing that walling crib ［ 2 ］ has been fixed under the highway on the well mouth).Earlier well lid ［ 3 ］ is placed on the walling crib ［ 2 ］.Well lid this moment ［ 3 ］ can not put in place, with the hands lifts well lid ［ a 3 ］ end with lock, and the suitable angle that tilts, and advances then and chews the formula clamp, makes it bite walling crib ［ 2 ］ projective table type ring type back-up ring.Both hands are decontroled well lid ［ 3 ］ and are dropped on naturally on the walling crib ［ 2 ］.Because built-in lock ［ 6 ］ head has 45 ° inclined-plane, when running into walling crib ［ 2 ］ projective table type annular retaining ring, lock pin ［ 6 ］ compression spring ［ 8 ］, the lock pin head has contracted and has gone back.Along with the whereabouts of well lid ［ 3 ］, spring ［ 8 ］ with lock pin ［ 6 ］ bullet come out, lock pin ［ 6 ］ has reached below the flange of walling crib, has played the effect of locking.

When needs are opened well lid ［ 3 ］, carry out underground installation when safeguarding, the staff can use private key ［ 5 ］, according to the numbering on the well lid ［ 3 ］, (all well lids all use A, B, C, D, five letters of E to number), the numbering of private key ［ 5 ］ align with well lid ［ 3 ］ on number consistent the time, the clamp of key ［ 12 ］ and stationary magazine creel ［ 14 ］ is inserted in the plum blossom hole of well lid ［ 3 ］.Right hand rotation stationary magazine creel ［ 14 ］ is the 45 degree, and left hand screw key axle ［ 13 ］ is 30 ° of angles.At this moment, built-in lock ［ 1 ］ is opened, simultaneously, and the bottom side that the following clamp of stationary magazine creel ［ 14 ］ has blocked plum blossom hole.(just now, the right hand was that the handle of holding stationary magazine creel ［ 14 ］ rotates), this moment, as long as the right hand is upwards carried, well lid ［ 3 ］ one ends have just left walling crib ［ 2 ］.Continue promptly to have started well lid ［ 3 ］ obliquely upward to lifting.Both hands will be worked good, and firmly want suitably.

Claims

1, high-strength anti-theft formula well lid, it comprises built-in lock, well lid, walling crib, key, it is characterized in that: built-in lock [1] is located at below the well lid, and firmly latent with the screening of L type baffle plate, and its built-in lock [1] is by lock pin [6], screw [7], spring [8], key seat [9], lid [10], driving lever [11] is formed, and design has private key [5].

2, by the described high-strength anti-theft formula of claim 1 well lid, it is characterized in that: private key ［ 5 ］ is by key ［ 12 ］, key axle ［ 13 ］, stationary magazine creel ［ 14 ］, inspection hole cover ［ 15 ］, pin ［ 16 ］, spring ［ 17 ］, stifled ［ 18 ］, handle ［ 19 ］ is formed.

3, by the described high-strength anti-theft formula of claim 2 well lid, it is characterized in that: key axle ［ 13 ］ goes out a narrow plane in a side milling of axle, and the plane is marked with A, B, C, D, five letters of E, and the counterpart of axle is drilled with five blind holes.

4, by the described high-strength anti-theft formula of claim 1 well lid, it is characterized in that: well lid ［ 3 ］ is provided with two and chews the formula clamp and cooperate with lock on the opposite of built-in lock, limit well lid ［ 3 ］ and started.

5, by the described high-strength anti-theft formula of claim 1 well lid, it is characterized in that: L type baffle plate ［ 4 ］, mill out a groove at facade, allow key ［ 12 ］ by this groove, stir dead man ［ 11 ］ and open built-in lock,

Groove on the described L type baffle plate has five kinds of regulations that height is different, and is corresponding with label and the label on the private key ［ 5 ］ on the well lid ［ 3 ］.