CN2304694Y

CN2304694Y - Anti-stealing manhole cover

Info

Publication number: CN2304694Y
Application number: CN 97232999
Authority: CN
Inventors: 刘宝恒
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-05-09
Filing date: 1997-05-09
Publication date: 1999-01-20
Anticipated expiration: 2007-05-09

Abstract

The utility model relates to an anti-stealing manhole cover, belonging to a vertical manhole cover protection device of public facility underground engineering, such as a communication network, a steam valve, a fire hydrant, a discharge culvert, etc. that are communicated with the ground. The manhole cover comprises an upper cover and a lower frame, and is characterized in that one side of each of the upper cover and the lower frame adopts a double hinge type connection formed by a hidden-type double-hook hinge shaft mechanism. The other side is provided with a locking device which can be opened only by a professional key and lock the upper cover and the lower frame. An unlocking hole is arranged on the upper cover. The connection mode of the upper cover and the lower frame of the utility model is not easy to detach, and can only be opened by using the professional key. Thus, the anti-stealing manhole cover has the double antitheft function.

Description

The anti-theft type manhole cover

The utility model relates to a kind of anti-theft type manhole cover, is the protector of the pit mouth that communicates with ground such as underground construction-communication network of belonging to urban operating mechanism, steam gate valve, hydrant, discharge culvert.

In the prior art, traditional manhole cover is made with metal (cast iron) material, and the part that does not interconnect between its loam cake and the lower frame is to adopt the hinged formula structure of circumference to form.This just make some not just people the chance of " being easy to get " is arranged, the phenomenon of losing of manhole cover happens occasionally, thereby causes the injury to vehicle and pedestrian.

The purpose of this utility model provides a kind of manhole cover with anti-theft feature, to solve above shortcomings in the prior art.

The utility model comprises loam cake and lower frame.A side that is characterized in loam cake and lower frame adopts the two interlinkage axis mechanisms that collude of dark formula to constitute the connection of two-fold page, and its opposite side is provided with the lock that could open with professional key loam cake and lower frame are locked.Be provided with open keyhole last covering.The utility model adopts said structure can realize the purpose of invention.

The utlity model has the binomial anti-theft measure: 1, its loam cake and lower frame adopt the two interlinkage axis mechanisms that collude of dark formula to connect, and be not easily-disassembled; 2, the utility model with loam cake and lower frame locking, uses professional key to open by lock.Therefore, the utility model is reasonable in design, and theftproof performance is strong, and is easy to operate, practical.

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 are the structural representation of the different embodiment of the utility model;

Fig. 6 is the A-A sectional view of Fig. 1, Fig. 2, Fig. 3, Fig. 4;

When bearing heavy load for the utility model, adopts Fig. 7 the profile of heavy arch form structure;

Fig. 8 is the B-B sectional drawing of Fig. 5;

Fig. 9 is the structural representation of the lock (A type) of the utility model employing;

Figure 10 is that the K of Fig. 9 is to view;

Figure 11 is for opening lock (A type) shown in Figure 9 structural representation with professional key;

Figure 12 is the left view of Figure 11;

Figure 13 is the schematic diagram of the initial actuating state of use lock (A type) professional key operated shown in Figure 9 shown in Figure 11;

Figure 14 is the schematic diagram of the tenth skill state of use lock (A type) professional key operated shown in Figure 9 shown in Figure 11;

Figure 15 is the structured coding schematic diagram that the lock core chip of professional key shown in Figure 11 and lock shown in Figure 9 (A type) adopts;

Figure 16 is the structural representation of the lock (Type B) of the utility model employing;

Figure 17 is that the F of Figure 16 is to view;

Figure 18 is for opening lock (Type B) shown in Figure 16 structural representation with professional key;

Figure 19 is the left view of Figure 18;

Figure 20 is two structural representations that collude interlinkage axle coupling mechanism of the present utility model;

Figure 21 is the structural representation of loam cake opening of the present utility model.

Loam cake 1 of the present utility model and lower frame 2 are to constitute the connection of two-fold page by being positioned at the two interlinkage axis mechanisms 3 that collude of inboard dark formula, be provided with the lock 4 that could open with professional key 5 at its inboard opposite side loam cake 1 and lower frame 2 are locked.On loam cake 1, be located at open keyhole 11.Insert in the open keyholes 11 with professional key 5 and could to open lock 4, promptly loam cake 1 could be opened, but loam cake 1 is by the two two-fold pages connections of colluding interlinkage axis mechanism 3 formations of dark formula with lower frame 2, so loam cake and lower frame are indissociable.

Dark formula is two, and to collude the interlinkage axis mechanism be that a side at loam cake 1 and lower frame 2 adopts arc frame to be connected, and any of arc frame fixed with loam cake 1 lower plane; Its another point is fixed on lower cover 2 inboards by lock shaft.Arc frame is rotated around bearing pin, when loam cake is opened like this, just played the effect of folding.

Lock 4 of the present utility model can adopt two kinds of form of structure:

The A type: this lock 4 is made up of lock core chip 6, lock pin 7, reed 8.Lock core chip 6 and lock pin 7 are made by nonmetals and are avoided " rust is dead ".Lock core chip 6 and lock pin 7 usefulness clench nails 9 are fixed together, and realize the coordination rotation by the bolt shaft 12 that is cast in the loam cake 1.Reed 8 is fixing with bolt shaft 12 with 7 one on lock pin, and another point is fixed with auxiliary bolt.One side of lock pin 7 has bayonet socket, and the bail 10 that is positioned on the reed 8 inserts in the pinning of bayonet socket place.14 is antiskid glue cushion.Lock core chip 6 circumference places are provided with the allocating slot breach with professional key 5 couplings, can open lock 4 in the open keyhole of professional key 5 insertion loam cakes 1.The professional key 5 that this lock 4 uses is the key of flat shape pusher dog band column cap of band crossbeam, change the concave, convex of three pusher dogs of its professional key 5 and the rigging position of three lock core chip allocating slot breach, can draw the lock core of seven kinds of forms, thereby (see Figure 15, the protruding place of key pusher dog is 1, and recess is 0 also just to form the key of seven kinds of numberings, the lock core chip breach is 1, non-notch is 0): (a), key is numbered 100, and lock core is numbered 100; (b), it is 010 that the key volume is, and it is 010 that the lock core volume is; (c), key is numbered 110, and lock core is numbered 110; (d), key is numbered 001, and lock core is numbered 001; (e), key is numbered 101, and lock core is numbered 101; (f), key is numbered 011, and lock core is numbered 011; (g), key is numbered 111, and lock core is numbered 111.When opening loam cake 1, with the professional key 5 insertion open keyholes of corresponding numbering, the post head top of professional key 5 is reed 8 down, makes bail 10 withdraw from the bayonet socket of lock pin 7.Manual professional key 5 rotated for 1 week in the direction of the clock, mentioned the key crossbeam and promptly took up loam cake 1.During locking,, extract key out and get final product by 1 week of above-mentioned action phase despining.

Type B: this lock 4 is fixing with crossbeam 15 by 2 the pillar double-screw bolts 17 that are cast in the loam cake 1 by the double-screw bolt 16 connection backs that lock pin 7 and crossbeam 15 usefulness play the guide pillar effect.18,19 is clamp nut, lock has on the pin 7 and the corresponding keyhole of loam cake 1 open keyhole 11, the professional key 5 employing heads of opening this lock 4 are the key of the band crossbeam of twin columns structure, therefore, and the hole, two gardens that the keyhole on the lock pin 7 is complementary for the head twin columns with this specialty key 5.When opening loam cake 1, the head twin columns of this specialty key 5 being inserted keyhole (two circular holes on the lock pin 7), is the center of circle with the guide pillar, revolves in the direction of the clock to turn 90 degrees, and mentions the key crossbeam and takes up loam cake 1.During locking,, extract key out and get final product by above-mentioned action phase despining 90 degree.

The contact platform of corresponding up and down 3-8 point contact is adopted in contact position between loam cake 1 of the present utility model and the lower frame 2, and the high 2-3mm of platform forms the contact surface contact after machine.Like this, pass through, when loam cake is hit, avoid tilting, increased stability at vehicle.And can prevent the ponding corrosion.

The utility model can be made series of products according to the purposes difference.As:

1, positive circular: tradition is old-fashioned, conservative use (Fig. 1).

2, square is square: be used for the dry type engineering, communication network etc. (Fig. 2).

3, oval shape: be used for pipe works, (Fig. 3) such as gate valve, hydrants.

4, octagon: be used for the open type engineering, discharge culvert etc. (Fig. 4).

5, heavy arch: be used for to bear the road surface (Fig. 7) that heavy vehicle passes through.

6, hydrophobic shape: be used for both sides of highway, make ponding discharge culvert (Fig. 5) under this device inflow place on road surface.

Like this, from the appearance, just can offer an explanation out the industry of use, save the time of searching.

The utility model can be divided into light-duty, medium-sized, heavy according to the size of bearing load.Three types differentiation is to change the thickness of loam cake, the form of girt strip, the form of the wall thickness of lower frame, height and combination.The utility model also can adopt casting technique machine-shaping according to load of bearing and purposes.As making with HT15-33, QT50-1.5.

Claims

1, a kind of anti-theft type manhole cover, comprise loam cake and lower frame, a side that it is characterized in that loam cake (1) and lower frame (2) adopts the two interlinkage axis mechanisms (3) that collude of dark formula to constitute the connection of two-fold page, and its opposite side is provided with the lock (4) that could open with professional key (5) loam cake and lower frame are locked; Loam cake (1) is provided with open keyhole.

2, anti-theft type manhole cover according to claim 1, it is characterized in that the two interlinkage axis mechanisms that collude of described dark formula are that a side at loam cake 1 and lower frame 2 adopts arc frame to be connected, arc frame is a bit fixed with loam cake 1 lower plane, its another point is fixed on lower cover 2 inboards by bearing pin, and arc frame is rotated around bearing pin.

3, anti-theft type manhole cover according to claim 1 is characterized in that described lock (4) by lock core chip (6), and lock pin (7), reed (8) are formed; Lock core chip (6) and lock pin (7) are fixing together, realize the coordination rotation by the stud shaft (12) that is cast in the loam cake (1); Reed (8) is a bit fixed with bolt shaft (12) with lock pin (7), and another point is fixing with auxiliary bolt axle (13), lock pin (7) one side band bayonet sockets, and the bail (10) that is positioned on the reed (8) inserts in the pinning of bayonet socket place; Lock core chip (6) circumference place is provided with the allocating slot breach with professional key (5) coupling; Specialty key (5) is the key of flat shape pusher dog band column cap of band crossbeam.

4, anti-theft type manhole cover according to claim 1, it is fixing with crossbeam (15) by the pillar double-screw bolt (17) that is cast in the loam cake (1) to it is characterized in that described lock (4) has used the bolt (16) of guide pillar effect to connect the back by lock pin (7) and crossbeam (15); Have and the corresponding keyhole of loam cake (1) open keyhole on the lock pin, it is the key of the band crossbeam of twin columns structure that professional key (5) adopts head.

5,, it is characterized in that the contact platform that the contact position between loam cake (1) and the lower frame (2) adopts the 3-8 point of upper and lower correspondence to contact according to claim 2 or 3 described anti-theft type manhole covers.