CN201190292Y

CN201190292Y - Cover for manhole

Info

Publication number: CN201190292Y
Application number: CNU2008200574843U
Authority: CN
Inventors: 沈佳玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-21
Filing date: 2008-04-21
Publication date: 2009-02-04
Anticipated expiration: 2018-04-21

Abstract

The utility model discloses a novel inspection well cover which has the main structure that a dismountable connecting device is formed between the inspection well cover (1), a plug (3) and a cover seat (4); a rubber gasket (5) shaped as the Chinese character tu is clamped between the outer side of the lower underside of the inspection well cover (1) and the outer side of the upper plane of the cover seat (4); due to the use of the utility model, the inspection well cover can be effectively prevented from being stolen by lawless persons, and noise generated by the impact between the inspection well cover and the cover seat can also be effectively reduced.

Description

Novel manhole cover

Technical field

The utility model relates to a kind of inspection shaft lid, the novel manhole cover that especially has antitheft noise control function.

Background technology

At present, on road, square, generally adopt the cast iron inspection shaft lid of no burglar-proof mechanism, thereby easily stolen, for hidden danger has been buried in traffic safety by some lawless persons.For this reason, some regional municipal sectors change the material of inspection shaft lid into plastics by cast iron, and still, common plastics is relatively poor owing to intensity, and is easy to aged deterioration, has formed new potential safety hazard again.And adopt high performance engineering plastics, not only input cost is very high, and does not solve antitheft problem.The municipal sector in the area that has is for solving the stolen problem of cast iron inspection shaft lid; the way that adopts chain to add the iron lock is protected the inspection shaft lid; but; owing to can discharge corrosive gas in the inspection shaft; also have washing away of rainwater, mud on road, the square; thereby the iron lock pin is can be because of corrosion, silt obstruction etc. former thereby can't open, and the lawless person more easily cuts off chain, makes chain become new " prey " again with the iron lock.Also once the someone proposes to adopt form such as electronic password lock to solve the stolen problem of inspection shaft lid.But electronic password lock needs power supply as power, and is difficult to supply with AC power on the spacious road, square, and also there is the problem that lost efficacy because of the time in dc source, and the value of this electronic password lock is also relatively more expensive.In addition, between existing inspection shaft lid and the cage is that iron contacts with the direct of iron, when the vehicles such as automobile cross the inspection shaft lid fast, can send irksome noise between lid and the cage, especially live near the resident of urban express way, be subjected to the interference of this noise deeply, influenced their quality of life.And the authoritative sources who has thinks, with regard to cost performance, the cast iron inspection shaft cover current be still only.Therefore, be necessary to solve the antitheft and noiseproof problem of inspection shaft lid.

The utility model content

The purpose of this utility model is to cover the problem that can make a noise between stolen easily and lid and the cage at the inspection shaft that exists in the prior art, provides a kind of installation and maintenance convenient, and theftproof performance is good, the inspection shaft lid that the noise control effect is good.

For realizing above goal of the invention, the utility model by the following technical solutions:

A kind of novel manhole cover, comprise inspection shaft lid 1, cage 4, it is characterized in that on inspection shaft lid 1, having and cover the perpendicular groove in plane 11 and with the through hole 13 of lid plane parallel, bearing 41 is arranged on the cage 4, through hole 42 is arranged on the bearing 41, bearing 41 places groove 11, and pin 3 passes the through hole 13 of inspection shaft lid 1 and the through hole 42 on the bearing 41, forms a dismountable binding inspection shaft lid between inspection shaft lid 1, pin 3 and the cage 4; At the two ends of pin 3 pin 2 is installed, the threads engaged in screw thread on the pin 2 and the through hole 13.

As an embodiment preferably, there are off-gauge hole or off-gauge " protruding " shape tenon in the outer end of described pin 2.

As another embodiment preferably, the outer end of described pin 2 is installed in the inboard of end face 12.

As another embodiment preferably, between the outside on plane on the outside of the bottom surface of described inspection shaft lid 1 and the cage 4, accompany a rubber washer 5.

As another embodiment preferably, between the outside on plane on the outside of the bottom surface of described inspection shaft lid 1 and the cage 4, accompany a rubber washer 5 that is " protruding " font.

The utility model compared with prior art has the following advantages:

1, because inspection shaft lid 1, pin 3, form a dismountable binding inspection shaft lid between the cage 4, both can help the maintenance of inspection shaft, can prevent that again inspection shaft lid from arbitrarily being stolen by the lawless person, especially pin 2 is installed in the inside of through hole 13, the lawless person is difficult to differentiate by groove 11 structure and the shape of straight pin 2 nonstandard afterbodys, even the shape and the structure of lawless person's energy principium identification pin 2 nonstandard afterbodys, but the lawless person also can't measure the concrete size of pin 2 nonstandard afterbodys, and then be difficult to copy to make special tool, thereby also just can't remove pin 3, promptly can't steal inspection shaft lid 1.

2, owing to accompany a nonmetallic packing ring 5 between the outside on the last plane of the outside of the bottom surface of inspection shaft lid 1 and cage 4, such as the rubber washer of " protruding " font.When the vehicle of fast running impacts inspection shaft and covers 1 because of extruding; because the cushioning effect of rubber washer is arranged; can reduce or avoid the noise that produces because of impact between inspection shaft lid 1 and the cage 4 effectively, and can effectively protect between well lid 1 and the cage 4 because of the impact premature failure.

Description of drawings

Fig. 1 is the vertical view of novel manhole cover;

Fig. 2 be Fig. 1 along A-A to sectional view;

Fig. 3 be Fig. 1 along B-B to sectional view;

Fig. 4 is the sectional view of cage 4;

Fig. 5 is a kind of structural representation of pin 2;

Fig. 6 is the another kind of structural representation of pin 2.

In Fig. 1, Fig. 2, omitted cage 4; Fig. 5, Fig. 6 are the structural representations of pin 2, can do further to expand to the nonstandard hole of the outer end of pin 2 or shape, the size of off-gauge " protruding " shape tenon.

The specific embodiment

Embodiment

A kind of novel manhole cover, comprise inspection shaft lid 1, cage 4, on inspection shaft lid 1, have several and the perpendicular groove 11 in lid plane, this groove 11 can be to be " drum " shape, it also can be square or rectangular, not only can load and unload straight pin 2 by groove 11, can also allow rainwater flow in the sewer by groove 11 with special tool; The inside of inspection shaft lid 1 also have one with the through hole 13 that covers plane parallel, this through hole 13 is cylindrical holes; Bearing 41 is arranged on the cage 4, through hole 42 is arranged on the bearing 41, bearing 41 places groove 11, and pin 3 passes the through hole 13 of inspection shaft lid 1 and the through hole 42 on the bearing 41, forms a dismountable binding inspection shaft lid between inspection shaft lid 1, pin 3 and the cage 4; Both can help the maintenance of inspection shaft with this, can prevent again that inspection shaft lid from arbitrarily being stolen by the lawless person.Arbitrarily string is moving in through hole 13 in order to prevent garden pin 3, at the two ends of garden pin 3 pin 2 is installed, the threads engaged in screw thread on the pin 2 and the through hole 13, and there are off-gauge hole or off-gauge convex tenon in the outer end of pin 2.Off-gauge hole comprises blind hole and through hole, and off-gauge convex tenon promptly is the solid relative with the hole.This off-gauge implication comprises off-gauge shape and off-gauge size, such as being triangle, Triangular Flos Mume shape, irregular curve etc. in shape.Size with related standards or custom is different dimensionally.Purpose is the lawless person can't be bought from the market or can't to produce the instrument that can twist garden pin 2 by simple work.Because the lawless person can't pull down garden pin 2, thereby also just can't pull down garden pin 3, promptly can't steal to such an extent that inspection shaft covers 1.The utility model also has an ingenious part to be that the outer face of garden pin 2 is installed in the inboard of the end face 12 that intersects along through hole 13 and groove 11, and this degree of depth is approximately 4-6 centimetre.For guaranteeing the safety of pedestrian, vehicle, groove 11 generally is unfit to do too greatly, can dismantle garden pin 2 by enough special tools as long as guarantee the maintenance personnel of municipal unit, the lawless person can't differentiate the structure and the shape of straight pin 2 nonstandard afterbodys by groove 11 like this.Backward, even the shape and the structure of lawless person's energy principium identification straight pin 2 nonstandard afterbodys, but because the locus is limited, the lawless person also can't accurately measure the concrete size of straight pin 2 nonstandard afterbodys, because nonstandard shape belongs to irregular shape, only depend on and estimate or only can't accurately measure, and then the lawless person can't copy the making special tool with conventional means, thereby also just can't remove garden pin 3, promptly can't steal inspection shaft lid 1.

As municipal unit, garden pin 2 and the special tool that matches with garden pin 2, can entrust special unit processing and fabricating, only use for our unit, on market, do not circulate, be used to make garden pin 2 and the mould of the special tool that matches with garden pin 2 etc. should take measures to be maintained secrecy.Different municipal units can make corresponding special tool and mould according to situation separately, prevents that the sized data of special tool or special tool from flowing into the public arena.

Between the outside on plane on the outside of the bottom surface of inspection shaft lid 1 and the cage 4, accompany a nonmetallic packing ring 5, such as the rubber washer that is " protruding " font.When the vehicle of fast running impacts inspection shaft and covers 1 because of extruding; because the cushioning effect of rubber washer is arranged; can reduce or avoid the noise that produces because of impact between well lid 1 and the cage 4 effectively, and can effectively protect between well lid 1 and the cage 4 because of the impact premature failure.Especially near the resident who lives in the urban express way, noise is the influence of noise resident's at night normal rest especially, has reduced townsfolk's quality of life.From this angle, the utility model also has the good social benefit.

For reducing the manufacturing cost of inspection shaft lid 1, it is also conceivable that the reverse side with inspection shaft lid 1 manufactures the hollow out body, suitably add the structure of a part such as " reinforcing rib " at openwork part, both can guarantee the bulk strength of inspection shaft lid 1, can alleviate its weight again.When convenient for maintaining is changed, reduce its manufacturing cost with this.

Under the situation that does not depart from the utility model general plotting, can also be used for various modifications the utility model, but, belong to protection domain of the present utility model equally as long as identical with the utility model formation or be equal to.

Claims

1, a kind of novel manhole cover, comprise inspection shaft lid (1), cage (4), it is characterized in that on inspection shaft lid (1), having and cover the perpendicular groove in plane (11) and with the through hole (13) of lid plane parallel, bearing (41) is arranged on the cage (4), through hole (42) is arranged on the bearing (41), bearing (41) places groove (11), pin (3) passes the through hole (13) of inspection shaft lid (1) and the through hole (42) on the bearing (41), forms a dismountable hookup mechanism between inspection shaft lid (1), pin (3) and the cage (4); Pin (2) is installed, the threads engaged in screw thread on the pin (2) and the through hole (13) on the end face of pin (3).

2, novel manhole cover according to claim 1 is characterized in that on the end face of described pin (2) off-gauge hole or off-gauge " protruding " shape tenon being arranged.

3, novel manhole cover according to claim 2 is characterized in that the outer end of described pin (2) is installed in the inboard of end face (12).

4, novel manhole cover according to claim 1 is characterized in that accompanying a rubber washer (5) between the outside on the last plane of the outside of the bottom surface of described inspection shaft lid (1) and cage (4).

5,, it is characterized in that between the outside on the last plane of the outside of the bottom surface of described inspection shaft lid (1) and cage (4), accompanying a rubber washer (5) that is " protruding " font according to the described novel manhole cover of claim 1-4.