CN2216082Y

CN2216082Y - Structurally improved manhole cover

Info

Publication number: CN2216082Y
Application number: CN 95200136
Authority: CN
Inventors: 张廷献
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-05
Filing date: 1995-01-05
Publication date: 1995-12-27
Anticipated expiration: 2005-01-05

Abstract

The utility model relates to a structurally improved manhole cover for pavement pipelines, comprising a cover plate and a base body. The inner side edge of the base body is provided with a through elongated hole whose center is vertically and horizontally provided with a clamp groove having a greater width and is also provided with a J-shaped positioning body; the diameter of the horizontal clamping part on the upper end of the J-shaped positioning body is greater than the width of the elongated hole, the width of the vertical rod body in the middle is smaller than the width of the elongated hole, and the bottom is provided with a clasp part; one side edge of the clasp part is fixed with a clamp convex body. The cover body is covered behind the base body. The rod body of the positioning body and the clasp part are rotated by 90 DEG after threaded through the elongated hole, the clasp part is positioned under the flange of the base body, and the can not crossly rise. The utility model has simple structure, easy installation and open, and safety.

Description

Structurally improved manhole cover

The utility model relates to a kind of pipeline hole seat, refers to a kind of cover plate perk that prevents especially, has the structure improved pipeline hole seat of safety device.

Telecommunication bureau, Utilities Electric Co., Running-water Company, gas company etc. when carrying out the operation of road surface linking pipeline, must use the hole seat, can be commonly called as " manhole " than the macropore seat for what the people entered, stretch into be commonly called as " hand hole " that carries out operation for hand.No matter being " manhole " or " hand hole ", is round or rectangle, and its structure is roughly the same, and still has following shortcoming in the use:

1, rectangular opening seat 1 structure commonly used, as Fig. 1, shown in 2, it comprises that mainly one is embedded in the pedestal 11 on ground 10, and at the set flange 111 of pedestal 11 inboard peripheries, can insert covering for a cover plate 12, above-mentioned hole seat 1 is generally used by telecommunication bureau or Utilities Electric Co. at present, its disadvantage is after this cover plate 12 covers on the pedestal 11, do not have any fastening devices, press out-of-dately from it, often cause other end perk and eject when the tire 13 of wheel, especially for circular cover, when pressing its edge,, abnormally dangerous because the revolving force of tire 13 can cause cover plate 12 rotations to fly out because of tire 13.

2, at the above-mentioned shortcoming of square type hole seat 1, now produced a kind of hole seat 2 of improvement, as shown in Figure 3, this improvement hole seat 2 is that the medial margin at pedestal 21 also is provided with flange 211, just this flange 211 makes thickness increase when the founding casting, and make it smooth with giant brain milling machine processing, establish four locating holes 212 in four end angular bits of flange 211 again, and cover plate 22 is when casting, be provided with four projections 221 at root edge, be cut to till locating hole 212 matches with the giant brain milling machine again.Like this, when making cover plate 22 insert pedestal 21, this projection 221 all can insert in the locating hole 212, reaches the purpose of nested location.This hole seat 2 through improvement, really can prevent cover plate 22 perks, this is because due to the locating hole 212 of the 221 insertion pedestals 2 of the projection on the cover plate 22, therefore when the seat 2 of the hole of this improvement of manufacturing, must make each projection 221 on the cover plate 22 can accurately aim at simultaneously four locating holes 212 of pedestal 2, and the tightness of fit is very accurate, because if too tight projection 221 can't pass in and out locating hole 212, if and too the pine, after then projection 221 is inserted in locating hole 212, can't engage at all, have no difference with aforesaid hole seat 1.Therefore, the hole seat 2 necessary a lot of roads procedures that increase through improvement just can conform with instructions for use, not only waste time and energy, and increase more than cost 3-5 times.Moreover, it is very inconvenient when the cover plate 22 of this improvement hole seat 2 will be raised, because four projections 221 all are inserted in the positioning hole corresponding 212, and be tight fit state, hang hole 222 application of forces from four of cover plate 22, use the average power of hanging just cover plate 22 might be sling so that the maintainer need employ crane, if deflection is wherein arranged on one side slightly, then can't sling, and every cover plate 22 has at least more than hundreds of kilograms at all, also can't use manpower to come pull-up.So when the hole seat to above-mentioned improvement keeps in repair, bother very much the practicality extreme difference.

Main purpose of the present utility model is to provide a kind of cover plate can perk, and very safe structure improved pipeline hole seat, can perk easily injure the pedestrian, the shortcoming of poor stability to overcome existing pipeline hole seat at its cover plate of stressed back.

A purpose more of the present utility model provides a kind of simple in structure, can strengthen combinational gap, and it is convenient to assemble, and is easy to start the structure improved pipeline hole seat of lid when the constructor is overhauled.

For this reason, the utility model is taked following technical scheme:

It comprises pedestal and cover plate, it is characterized in that the body flange medial margin place of described cover plate with respect to pedestal, is provided with the tangent elongated hole that runs through, and is horizontally set with the clamping slot of big width in the elongated hole central vertical; Be provided with a T-shaped positioning body, the diameter of the fastening part that its upper end is horizontal needs the width greater than elongated hole, and width of the body of rod of vertical configuration needs less than elongated hole in the middle of it, and the bottom is provided with hook portion.

The pipeline hole seat of forming by the combinations thereof member, after cover plate 32 covers pedestal 31, utilize the body of rod 42 and the hook portion 43 of positioning body 4 to pass elongated hole 322, make it rotate 90 degree again, fastening part 41 is inserted in the clamping slot 323, so that hook portion 43 can be positioned flange 311 belows of pedestal 31, and when fastening part 41 places clamping slot 323, be the surface that is lower than cover plate 32, and identical with the tire direct of travel, so can play the effect that prevents cover plate 32 perks.

From the above mentioned, the utility model is compared with existing modified form pipeline hole seat, and simple in structure, it is easy and simple to handle to sling, and overcome the shortcoming that projection and locating hole chucking is difficult to start, and cost reduces greatly.

Accompanying drawings embodiment of the present utility model.

Fig. 1 is the decomposition texture schematic diagram of existing pipeline hole seat.

Fig. 2 is for having the schematic diagram after pipeline hole seat is buried underground now.

Fig. 3 is the decomposition texture schematic diagram of existing modified form hole seat.

Fig. 4 is the decomposing schematic representation of the utility model preferred embodiment.

Fig. 5 is the decomposition texture schematic diagram of the utility model clamping slot and positioning body.

Fig. 6 is the combining structure schematic diagram of the utility model clamping slot and positioning body.

Schematic diagram when Fig. 7 locatees for the utility model.

Schematic diagram when Fig. 8 desires to sling for the utility model.

Schematic diagram when Fig. 9 has sling for the utility model.

Hole seat 3 is embedded in ground 5, as shown in Figure 7, when cover plate 32 covers on pedestal 31 flanges 311, the fastening part 41 of T-shaped positioning body 4 places in the clamping slot 322, makes positioning body 4 to rotate, and this moment, the body of rod 42 passed elongated hole 322, and make hook portion 43 be positioned at flange 311 root edges, and cover plate 32 can't be started, when vehicle runs over from it fast, can not make outside cover plate 32 perks or the ejection pedestal 31 yet.

After positioning body 4 is inserted elongated hole 322, cover plate 32 bottoms are fixed on the side of hook portion 43, and only be provided with blocking convex body 44 at positioning body 4 single sides, and make blocking convex body 44 wideer than elongated hole 322, so that blocking convex body 44 can't pass through elongated hole 322, hit and eject to prevent that the thief from pulling out positioning body 4 to steal or be subjected to rank.

When desire is sling it when raising cover plate 32, fastening part 41 with positioning body 4 is pulled upwardly earlier, make it break away from clamping slot 323, and it is revolved turn 90 degrees, hook portion 43 and elongated hole 322 are located along the same line, and the blocking convex body 44 that order is positioned at hook portion 43 sides is inverse state with flange 311, and can not catch on flange 311, and this moment is owing to fastening part 41 diameters are positioned at its top greater than elongated hole 322 width.

What be provided with symmetry on the plate face of cover plate 32 hangs hole 321.Hook portion 43 sides of T-shaped positioning body 4 bottoms have a blocking hole 431, snap in it for a blocking convex body 44.

Claims

1, pipeline hole, a kind of structure improved road surface seat comprises pedestal and cover plate, it is characterized in that the body flange medial margin place of described cover plate with respect to pedestal, is provided with the tangent elongated hole that runs through, and is horizontally set with the clamping slot of big width in the elongated hole central vertical; Be provided with a T-shaped positioning body, the diameter of the fastening part that its upper end is horizontal needs the width greater than elongated hole, and width of the body of rod of vertical configuration needs less than elongated hole in the middle of it, and the bottom is provided with hook portion.

2, pipeline hole, structure improved road surface according to claim 1 seat is characterized in that the hook portion side of described positioning body bottom has a blocking hole, snaps in for described blocking convex body.