CN1091823C

CN1091823C - Roadway manhole cover-hinged to frame

Info

Publication number: CN1091823C
Application number: CN97113508A
Authority: CN
Inventors: J·劳罗
Original assignee: Norinco SA
Current assignee: Norinco SA
Priority date: 1996-05-24
Filing date: 1997-05-24
Publication date: 2002-10-02
Anticipated expiration: 2017-05-24
Also published as: CZ293860B6; SI0808951T2; IT1290091B1; CZ156297A3; ES2169327T3; DE69708503T3; SI0808951T1; ES2169327T5; YU21297A; DK0808951T4; CY2327B1; EP0808951B2; SK64497A3; EP0808951A1; DE69708503D1; DE69708503T2; DK0808951T3; HK1005664A1; PT808951E; BR9703311A

Abstract

The manhole cover, e.g. for a pipe or cable inspection chamber, consists of a surrounding frame (1) and hinged panels (10,11,12,13) which form the lid. The panels are in the form of right-angled triangles hinged to adjoining sides of the frame so that each pair closed to make a square section of the lid. Each of the triangular panels except one, have a lug projecting from its edge which engages with the underside of the edge of an adjacent panel. The final panel with no lug is equipped with a locking mechanism which fixes it to the frame.

Description

Be articulated in the road inspection cover on the framework

The present invention relates generally to road inspection eye etc., and it comprises a framework substantially, in the recessed road of this framework and horse flush with road, a hinged lid is installed on framework.

Existing multiple inspection cover comprises those types that have one or four limit type frameworks, is connected with the modification of right-angled triangle plate that matches on framework, to be configured for sealing the lid by the formed opening of framework.In the situation of this known triangle inspection cover, cover plate is heavy usually and be difficult to lift; They are the two opposite sides that are hinged on framework in addition, even make and to enter in the framework not difficultly but also pretty troublesome, this entering is to be used for the equipment such as pipe or cable is inserted in the framework, and wherein the duct of road is to be limited by framework.

In addition, the present invention is overcoming these shortcomings, its solution route provides a kind of inspection eye, opening and closing of this inspection cover is easy especially, when being shown in an open position, provide a kind of through framework and convenient with enter the passage in the road or the means of inspection eye quickly, and can not bring obstruction because of opening of lid.

For this reason, the present invention relates to an inspection cover, it comprises a tetragonal framework, be hinged with the triangular plate that matches on this framework, to constitute inspection cover, it is characterized in that triangular plate is articulated on two or three adjacent edges of framework, thereby, can in first kind of situation, in second kind of situation, freely enter in the framework with a side with both sides at the open position that covers.

Can find out do not have this fact of hinged cover plate easily, therefore be convenient to freely enter in the framework based on two adjacent edges of framework.

According to another kind of form of the present invention, inspection cover of the present invention comprises two leg-of-mutton cover plates, and they are articulated on the adjacent edge of framework by an one minor face.

According to another kind of manufacture method, this inspection cover comprises four triangular plates, and they are arranged to this form.Wherein two plates are hinged to and can open, and an one minor face is positioned on two relative edges of framework, and in addition two plates are articulated on its minor face, with the another side of framework and lean on.

According to another form of the present invention, except a triangular plate, each triangular plate that is articulated on the framework is equipped with at least one lug, and it is installed in the downside of adjacent panels.

The further feature of foregoing invention is that the triangular plate that is unkitted described lug then is equipped with and is used for plate is locked in a system on the framework.

Can find out with the front, because the existence of these lugs can make other all plate of single plate locking of not being with lug.

Yet the present invention still has other advantage and feature, by the detailed description of doing below in conjunction with accompanying drawing, can more easily understand these advantages and feature, and wherein these accompanying drawings are only used for the purpose that example is separated.Among the figure:

Fig. 1 is the plan view (from watching) that has a framework of a lid, and this lid comprises two triangular plates of the present invention, and it is in the closed position.

Fig. 2 is the schematic perspective view of the road inspection cover of Fig. 1, but the expression open mode.

Fig. 3 is the plan view (from watching) of a road inspection cover, and this lid comprises 4 triangular plates that adopt different designs.

Fig. 4 is the schematic perspective view of the inspection cover that is in open mode of expression 3 figure.

Fig. 5 and 6 expressions are articulated in partial sectional view on the framework with cover plate, and wherein Fig. 5 middle cover is in closed condition, and Fig. 6 middle cover is in open mode.

Fig. 7 links to each other with a cover plate with 8 expressions, is in the sectional view of the lock of locking and non-lock position respectively.

Referring to accompanying drawing, can find out to be provided with a framework (1), it determines the opening on the road, for example, this framework is the quadrangle shape, is hinged with the modification of right-angled triangle plate that matches on it, closes the lid of framework (1) with formation.According to the design of Fig. 1 and 2, on this framework (1), be hinged with the plate (2 and 3) of two right-angled triangles, when closing, it is along hypotenuse (4) setting adjacent one another are.

According to further essential characteristic of the present invention, two plates (2 and 3) are hinged on two adjacent sides (1a and 1b) of framework.More particularly, plate 2 is to be connected on the limit 1a of framework 1 by two hinged (2a), and plate 3 then is connected on the limit 1b of framework 1 by two hinged (3a), and wherein limit 1b is adjacent with limit 1a.

As being clear that, when

triangular plate

2 and 3 is opened, inlet very easily is provided for inspection eye or passage, because can throw off

adjacent edge

1c and 1d expediently by Fig. 2.Can find out also that by Fig. 2 a triangular plate is plate 2 in the embodiment shown, have a lug (5), it stretches out and the downside that is arranged at plate 3 is under the surperficial 3c from this plate, and lock 6 also is installed on the plate 3, this can be clear that it is used for this plate 3 is locked in framework (1) by Fig. 7 and 8.

Therefore as can be seen, open position with reference to the inspection cover shown in 2 figure, lid is closed on framework 1 by the first decline plate 2, and pressured then plate 3 locking plates 2 on the lug 5 of plate 2 then are positioned at the cover lock that the operation of the lock 6 on the plate 3 can be made up of

plate

2 and 3 the most at last and terminate on the framework 1.Plate 3 is without any lug (5) as can be seen.

In the project organization shown in Fig. 3 and 4, framework 1 is the one-piece frame (as said frame 1) that casting forms, and compares with the square configuration of first embodiment, and this framework 1 more approaches rectangular shape.

On the framework 1 of this situation, be hinged with 4 triangular plates (10,11,12 and 13), on this hinged three adjacent edges (1d, 1a and 1b) that are arranged on framework 1.

More particularly, plate 10 and 13 is respectively by hinged 10a and 13a and is connected in by a minor face of plate on two relative edges (1d and 1b) of framework 1.(1d and 1b) is the minor face of rectangular frame 1 on these both sides.

In addition two plates (11 and 12) are respectively by hinged 11a and 12a, and another minor face by these plates is connected on one of two residues of framework 1 and relative limit (1a and 1c).

Limit

1a and 1c are the long limits of rectangular frame.

Can be clear that by Fig. 3 mutually and by placing, and plate 12 and 13 puts together along its hypotenuse (15) plate 10 and 11 similarly along its hypotenuse (14), and be articulated on same one side of framework 1 plate 11 and 12 also along minor face 16 mutually and by placement.

As seen from Figure 4, a lug (5) is housed respectively on the plate 10,11 and 12, is not provided with a lock (6) then is housed on the plate 13 of this lug.

Therefore, identical with the aforementioned principles of Fig. 1 and 2, from the open position of Fig. 4, plate 10,11 and 12 is with aforementioned orderly close-down and pass through lug (5) with they self-lockings, to close the inspection cover of just having described.Last closing plate 13 also is locked on the framework 1, thus also locking plate 10,11 and 12.Therefore, put down plate 10,11 successively by counter-clockwise direction, 12 and 13, but the shut down inspection port lid; In converse mode,, can open lid by lifting plate 13,12,11 and 10 respectively successively.

This shows, with order open plate successively with have this advantage,, also can work easily even that is: a unbred yardman has run into and lifts several cover plates with opposite order closing plate successively.

Refer again to Fig. 4, can find out, can obtain very big space, entering inspection eye or passage, and can be very easy to and quickly by the framework introducing equipment along the long limit (1c) of rectangular frame at open position.

No matter be to adopt the plate shown in Figure 1 or the plate of distortion shown in Figure 2, it all is to adopt a kind of known mode that modification of right-angled triangle plate is articulated in framework 1, sketches with reference to Fig. 5 and 6 below.

Each plate for example is equipped with ear frame or similar item (20) on the plate 2, it contains a pin (21) that is connected on the framework 1.Ear frame (20) has a bossing (22), and when plate 2 was shown in an open position (Fig. 6), this bossing can be packed in the otch or similar item (23) of framework 1.

Therefore close the fastening position from plate shown in Figure 52, lead to from crossing along arrow (F) direction and rotate and open plate, wherein bossing 22 enters otch 23, and plate 2 is remained on open position reliably.

Be closing plate 2, bossing 22 is lifted slightly to make it to deviate from from otch 23, then towards the framework edge direction folded sheet 2 opposite with arrow (F).Shown the bearing or the similar item of plate 2, this can make this plate place on the framework 1, and is in the closed position.

Latch system (5) only links to each other with the cover plate that lug 5 is not housed of framework 1, and promptly the plate shown in the plate shown in Fig. 1 and 23 or Fig. 3 and 4 13 also will be described in concise and to the point mode.

In Fig. 7 and 8, the lock 6 that links to each other with aforementioned panels, for example plate 3 consists essentially of and is positioned at a rotating rotor (30) on the plate 3, and is kept by a spring (31).Rotor (30) links to each other with a bolt or similar item (32), in the rib (33) on its framework 1 that is designed to pack into.

From lock position shown in Figure 7, adopt a spanner (34) that rotor (30) is rotated for example 1/4 circle, make bolt 32 throw off framework 2, thereby decontrol plate 3, this can be clear that by Fig. 8.

Certainly the present invention is not limited to described and shown manufacture method, and they only provide as the mode of example.

In the method, can adopt the modification of right-angled triangle plate that is different from described other quantity, as long as these plates are articulated on some adjacent side of framework, thereby when open position, it is empty smooth that other limit of framework keeps.

Therefore, the present invention includes all equivalent technologies and their combination relevant, as long as it is included in the appended claims with described system.

Claims

1. road inspection cover, described road inspection cover comprises a quadrilateral frame (1) and a lid of optionally taking closed condition and open mode, so that open and close described framework, described lid comprises at least one pair of first diabolo cover plate (2,3; 12,13) be hinged on first limit (1a) that adjoins each other and second limit (1b) of described framework (1) respectively, so that when described lid is in open mode, allow the 3rd limit (1c) of freely using at least one described framework, each described cover plate has a free top, it is characterized in that: it comprises first pair and the second diabolo cover plate at the most, each has the shape of right-angled triangle to the cover plate in the described cover plate, and be under the closed condition at described lid, described cover plate is directly overlapping with its hypotenuse, and the free top of all described cover plates is adjacent to each other.

2. road inspection cover as claimed in claim 1, it is characterized in that: described lid comprises a pair of second diabolo cover plate (10,11), described cover plate (10,11) be hinged on first limit (1a) of described framework (1) and the 4th limit (1d) that adjoins each other respectively, described first pair of cover plate and second pair of cover plate have the cover plate that adjoins each other accordingly, and when described lid was in closed condition, the described cover plate that adjoins each other was overlapped with its right-angle side (16).

3. road inspection cover as claimed in claim 1 or 2, it is characterized in that: each the described angle fillet that is articulated in described framework (1) is except one of them cover plate (13), all install with at least one lug (5), described lug is arranged at the downside that is adjacent one cover plate against.

4. road inspection cover as claimed in claim 3 is characterized in that: be not provided with the described angle fillet (13) of described lug (5) and install a latch system (6), so that described cover plate is locked on the described framework (1).