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High strength square steel structured rubber composite manhole cover and preparation methods
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A composite material, high-strength technology, used in underwater structures, infrastructure engineering, artificial islands, etc., can solve problems such as detrimental city appearance, subsidence of manholes, and lack of simultaneous improvement of manholes
Active Publication Date: 2012-05-02
广东守创者智网科技有限公司
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As we all know, paving asphalt on the road surface is carried out in stages. When paving for the first time, the manhole cover is generally about 5cm higher than the road surface. After the road surface is rolled by vehicles, the road surface around the inspection well sinks to form an upward convex inspection well; or the damaged road surface is repaired and asphalt is added. When the inspection shaft is not raised synchronously, causing the inspection shaft to sink in disguise
This kind of "road navel" brings hidden dangers to the comfort, stability and safety of driving, and also damages the appearance of the city.
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[0055] [The first type] is a high-strength square steel structure rubber composite manhole cover;
[0056] refer to Figure 2 ~ Figure 3 , a high-strength square steel structure rubber composite manhole cover composed of rubber composite material 1, square steel skeleton 2, and reinforced composite cement 3, the key technology is:
[0057] A. Reinforced composite cement (reinforced) is poured into the hole of the welded square steel skeleton;
[0058] B. The shape of the square steel skeleton is similar to a "shoulder pole", and the lower flat ends are pointed at both ends ("equal strength").
[0059] The required materials refer to image 3 , the standard square steel has:
[0060] 30mm×60mm×2mm ( image 3 1, 2, 3 in );
[0061] 30mm×50mm×2mm ( image 3 4 in );
[0062] 30mm×30mm×2mm ( image 3 5 of );
[0063] 30mm×20mm×2mm ( image 3 6, 7, 10, 12 in );
[0064] A total of four specifications of square steel materials and 30mm × 3mm flat iron.
[0065] Since the ...
Embodiment example 1
[0094] Implementation Case 1 , which will be described in detail below in combination with specific implementation cases:
[0095] 30 parts of polyurethane resin (the following formulas are all "unit weight parts"), 15 parts of glass fiber, 4.5 parts of polystyrene, 4.5 parts of styrene, 0.15 parts of tert-butyl fat, 0.15 parts of calciumhydroxide, 1 part of stearic acid 1 part, 1 part of zincstearate, 60 parts of regenerated fine rubber powder, and 0.2 part of color paste.
[0096] Among the above raw materials, polyurethane resin is colloidal solvent type, polystyrene is granular, styrene is solvent type, tert-butyl fat is solvent type, calciumhydroxide is powder, stearic acid is powder, and regenerated fine rubber powder is powder (120 mesh), the color paste is a paste, and the length of the glass fiber is 4 to 8 cm. It is worth noting that during the manufacturing process of glass fiber, there is oily agent coated on the surface, which will hinder the bonding between...
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Abstract
The invention provides a high strength square steel structured rubber composite manhole cover and preparation methods. The preparation methods include a preparation method of the rubber composite and preparation methods of main fillers and fine reclaimed rubber powder in the rubber composite. The rubber composite is taken as the main body and square steel is taken as the skeleton to manufacture the high strength square steel structured rubber composite manhole cover and a high strength lifting arch bridge square steel skeleton and rubber composite manhole cover. The manhole covers and the preparation methods have the following advantages that: the raw materials for preparing the two composites have wide sources, and vast waste tyres are consumed, thus turning waste into wealth and turning harm into good, which is a breakthrough in the aspect of applying nonmetallic composites to the manhole cover products; the two products utilize the excellent properties of metallic and nonmetallic materials to form hardness and softness matching and have a series of excellent properties; and the manhole cover product which can be adjusted and lifted is simple and practical to operate, can be popularized and applied to the manholes on the urban streets, highways and the like in a large scale and has a very broad application prospect.
Description
technical field [0001] The invention relates to the technical field of road facilities, in particular to a manhole cover and a manufacturing method thereof. Background technique [0002] Inspection wells (also known as inspection wells) are the entrances and exits to underground facilities such as tap water, cable TV, sewage, telecommunications, electricity, gas, heat, fire protection, sanitation and other facilities. The composition of the base and the manhole cover (hereinafter referred to as the manhole cover), and the composition of the grate seat and the grate cover (hereinafter referred to as the water grate) are indispensable and important facilities in municipal construction, and are also one of the symbols that reflect the appearance of a city. The manhole cover is a closure that can be opened relative to the inspection well head, and the surface of the cover is the face that people and vehicles will pass through. There are some problems in the existing technology,...
Claims
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