CN1325732C

CN1325732C - Synthetic resin composite material manhole cover

Info

Publication number: CN1325732C
Application number: CNB2004100737921A
Authority: CN
Inventors: 崔珪东
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-27
Filing date: 2004-09-10
Publication date: 2007-07-11
Anticipated expiration: 2024-09-10
Also published as: KR20040014637A; CN1648355A

Abstract

A synthetic composite manhole cover is provided to secure the required strength, to reduce the weight of a manhole cover, and to secure the convenience and safety on installation and maintenance for a manhole. The synthetic composite manhole cover comprises the steps of forming a latticed steel structure(12) in a steel frame(11), and filling up an inner space of the structure(12) with synthetic resins(13).

Description

Synthetic resin composite material manhole cover

Technical field

The present invention relates to a kind of well lid, relate in particular to a kind of lightweight well lid at steel net body inside configuration filled synthetic resin.

Background technology

Well lid is the passage that connects confession, draining or underground installation and overground.Existing well lid adopts usually and makes based on the raw material of cast iron, and the well head that matches with well lid is normally made by steel concrete.

Castiron well lid causes himself very heavy, but well lid is the top of underground installation generally speaking, can not arbitrarily change the position according to ground facility.Therefore in order to reduce construction and the production of maintenance cost implement scale, can not divide by field strength and dimensional requirement and produce, produce and can only calculate by high-intensity well lid.

Lorry weight owing to needing to exercise on the consideration road has certain thickness so should guarantee well lid, and to guarantee its load-bearing requirement, the increase of thickness must cause the further increase of well lid weight.Therefore, existing well lid needs a lot of manpowers and expense aspect installation and maintenance, and excessive causing of its deadweight opened effort, causes the generation of security incident during operation easily.

In addition, be raw material because existing well lid adopts cast iron, its color dullness is not only failed beautifying urban environment, nor is convenient to night work, is easy to generate potential safety hazard.

Summary of the invention

The objective of the invention is provides a kind of well lid that is in light weight, be convenient to installation and maintenance itself at the problems referred to above.

The objective of the invention is to be achieved through the following technical solutions: this well lid comprises the well lid framework that is made of steel periphery and internal steel net structure, is filled with synthetic resin in described framework.

In preferred version of the present invention, the through hole that connects described main body frame inside can be set, this through hole can be multiple shapes such as circular hole, square hole.In this case, make by the through hole that connects main body frame inside to combine more firmly between synthetic resin and the main body, and in manufacture process, can make synthetic resin fully be filled into each space in the main body frame.

Net structure described in the present invention can be multiple shape, and can change according to site specific, for example can be honeycomb (Honeycomb) shape, and this shape is suitable for producing in batches.

Filler synthetic resin described in the present invention can be made shades of colour, and can according to circumstances append luminous plastics, makes product not only attractive in appearance but also have a recognition performance at night.

The present invention compared with prior art has the following advantages:

First: because well lid of the present invention is at the inner filled synthetic resin of net body, but its main part guaranteed strength requirement, its filler part can alleviate well lid weight greatly, therefore, under the situation that guarantees well lid intensity, the well lid own wt is lightened, so that installation and maintenance, and avoid when construction, taking place security incident effectively.

Second: the synthetic resin of producing well lid can add shades of colour, plays the effect of beautifying city, also helps identification at night behind the interpolation Noctilucent material.

Description of drawings

Fig. 1 is the exploded view of the well lid in the embodiment of the invention.

Fig. 2 is the sectional schematic diagram of well lid part among Fig. 1.

Fig. 3 is the sectional view of A-A ' line among Fig. 1.

The schematic diagram of the circle hole shape reticulated structure body that Fig. 4 is adopted when being embodiment of the invention production.

The schematic diagram of the hexagon reticulated structure body that Fig. 5 is adopted when being embodiment of the invention production.

The mould schematic diagram that Fig. 6 is adopted when being embodiment of the invention production.

Fig. 7 is the schematic cross-section that forms through hole.

Fig. 8 is the partial cross section schematic diagram after the well lid distortion in the embodiment of the invention.

Fig. 9 is the schematic diagram of well lid another side shown in Figure 8.

Figure 10 is the partial cross section schematic diagram when using luminous plastics in the embodiment of the invention.

The specific embodiment

The present invention is described in further detail below with reference to drawings and Examples.

The exploded view of the well lid in the present embodiment as shown in Figure 1, this well lid comprises the well lid framework that is made of steel peripheral 11 and internal steel reticulated structure body 12, is filled with synthetic resin 13 in framework.Because the rim of the mouth of the bound fraction walling crib 21 of well lid combines with the cylindrical of well lid, so should guarantee the intensity of well lid periphery 11, the well lid periphery 11 in the present embodiment is steels.

The inside of well lid periphery forms netted steel tectosome 12 shown in Fig. 2～5, one side forms long connecting band, makes well lid that strong compressive resistance be arranged when large tracts of land is stressed.As shown in Figure 2, " I " shape is made in the cross section of tectosome 12, makes well lid also can form corresponding compressive resistance when small size contacts.

Tectosome 12 adapts to can form radial plane as shown in Figure 3, also can form multiple shapes such as circle hole shape shown in Figure 4 and 5 and hexagon.

Fill with synthetic resin 13 in the steel framework of tectosome 12, tectosome 12 is strengthened.Well lid in the present embodiment is when being subjected to external pressure, and framework 12 and inside stuffing synthetic resin 13 extruding mutually can prevent the deformation and failure of well lid integral body to prevent distortion.

Because of synthetic resin has elasticity, when 12 distortion of reticulated structure body, be out of shape simultaneously, can keep the compactness of well lid.

The reticulated structure body 12 of steel design and the complex of synthetic resin 13, put into reticulated structure body 12 in mould 30 inside as shown in Figure 6 and produce, can use the pressurized injection molding mode to make the combination of reticulated structure body 12 and synthetic resin 13 have more intensity in case of necessity by the injection moulding mode.

As shown in Figure 7, the circular hole 14 that connects reticulated structure body 12 can make synthetic resin 13 link to each other more closely with reticulated structure body 12 to become one.

Shown in Fig. 8 and 9 is when well lid is out of shape, and doses synthetic resin in order to avoid framework exposes above the reticulated structure body.

Shown in Figure 10 is to dose luminous plastics 15 for 13 li at synthetic resin, makes this well lid luminous at night, to strengthen the recognition capability at night.

Claims

1. a synthetic resin composite material manhole cover is characterized in that: comprise the well lid framework that is made of steel periphery and internal steel net structure, be filled with synthetic resin in described framework, and be provided with the through hole that connects described main body frame inside.

2. well lid according to claim 1 is characterized in that: described net structure is cellular.

3. according to any one described well lid in claim 1 or 2, it is characterized in that: in described filler synthetic resin, append luminous plastics.

4. well lid according to claim 3 is characterized in that: cancellated cross section, described inside is " I " shape.