CN2437735Y

CN2437735Y - Manhole composite material cover

Info

Publication number: CN2437735Y
Application number: CN 00235697
Authority: CN
Inventors: 陈忆; 徐其祥; 周虹
Original assignee: RUISEN CHEMICAL CO Ltd ZHEJIANG
Current assignee: RUISEN CHEMICAL CO Ltd ZHEJIANG
Priority date: 2000-06-23
Filing date: 2000-06-23
Publication date: 2001-07-04
Anticipated expiration: 2010-06-23

Abstract

The utility model relates to a manhole cover made of composite materials, which is formed by moulding benzenoid type unsaturated polyester resin composite material through high temperature. The right side and the back side of the utility model are all provided with reinforcing ribs, and the middle is thicker than the circumferential edge. An outer circumferential ring is tapered, the manhole cover is provided with two locking holes, and locks are arranged on the locking holes which are clamped and covered by sealing pads. Two places at the right side of the manhole cover are provided with handles, and the circumferential edge of the back side is provided with a sealing groove which is inlaid in a sealing ring. The utility model has the advantages of high intensity, favorable anti-corrosion performance, electrostatic prevention, light weight, no pollution, no recovery and utilization values, theft protection and low cost and price.

Description

A kind of composite material manhole cover

The utility model relates to a kind of inspection shaft lid, refers in particular to composite material manhole cover.

Traditional inspection shaft lid generally all adopts cast iron to make.The casting iron well lid price is more expensive, and often stolen, lose serious, the pernicious injures and deaths that happen occasionally and accident such as crash into.For antitheft, people one pay attention to make it have anti-theft device on the structure of inspection shaft lid, as " manhole cover anti-theft device " (ZL93237579), " anti-stealing manhole cover " (ZL95241036), " anti-stealing manhole cover " (ZL96232738), " anti-stealing manhole cover " (ZL99227151) or the like; The 2nd, paying attention on material makes its no recovery value, as " changeable steel fibrous concrete well lid " (ZL97202338), " reinforced glass fiber reinforced plastic well lid " (ZL97207516), " GRC material well lid, well double-edged fine-toothed comb " (ZL97214534), " a kind of composite drain cover " (ZL98203522) or the like.But all have some unsurmountable shortcomings, as cost an arm and a leg, heavy, wear no resistance, Corrosion Protection is poor, insufficient strength, not antistatic or the like, promptly the combination property price is higher than not, is difficult to apply.

According to another report, the advanced composite material (ACM) anti-stealing manhole cover of Xi'an, Shaanxi aerospace industry the 4th academy 43 Research Institute exploitation is by after the specially treated of nonmetal waste material process, compression molding under the high performance resin condition of cure.Yet this product weight is heavier, intensity difference, and cost is higher, also is difficult to accomplish the large-scale promotion use.

Task of the present utility model is to provide a kind of composite material manhole cover, its intensity height, Corrosion Protection is good, antistatic, in light weight, pollution-free, there is not the value of recycling, antitheft, can be widely used in industry manholes such as municipal engineering, residential district, coal gas, tap water, fire-fighting, communication, chemical industry, oil, electric power, broadcasting and TV and tunnel etc.

For finishing above-mentioned task, the solution that the utility model is taked is: a kind of composite material manhole cover, and it forms through hot press moulding with the terephthalic unsaturated polyester resin composite material, and its obverse and reverse all has reinforcing rib, interior thickness is thicker than periphery, and outer border is taper; Inspection shaft is stamped two lockholes and sets up lock, and lockhole covers with the sealing mat card; Inspection shaft covers positive two places handle, and the reverse side periphery has a seal groove embedding sealing ring.

Because used material terephthalic unsaturated polyester (p-phenyl SMC) resin is a kind of material with high strength, high impact resistance, high-elongation, be different from conventional SMC, so the qualified inspection shaft that product is made than existing cast iron, glass fiber reinforced plastic, steel fibrous concrete, GRC material and other composite materials covers in light weight, but have advantages such as acidproof, alkaline-resisting, wear-resisting, shock-resistant, antistatic, pollution-free, no recovery value, long service life, economize on resources effectively, and cost is low, low price helps applying; Inspection shaft lid obverse and reverse all has reinforcing rib, has improved the intensity of product; Inspection shaft lid interior thickness is than peripheral cover thick (middle stressed maximum), and outer border is a pyramidal structure, makes positive pressure reach oblique dispersion and distributes, and product structure design is reasonable, has improved application life; There is handle in inspection shaft lid front, and is easy for installation; The inspection shaft lid locks, and is hooked in after locking on the inspection shaft seat lifting lug, not only locatees but also antitheft.Lockhole card sealing cushion for cover, inspection shaft lid reverse side has sealing ring, and waterproof is prevented sand dust, prevents that sand from entering accumulate over a long period obstruction well and pipeline (tunnel); P-phenyl SMC true qualities are jade green, and manage to make do other colors, good looking appearance.Replace poor performance, stolen and accidents caused easily cast iron inspection shaft to cover with the utility model, for the purifying city environment, ensure traffic safety and people's life security, economizing on resources all is significant.

Description of drawings:

Fig. 1 is the vertical view (front) of present embodiment.

Fig. 2 is the upward view (reverse side) of present embodiment.

Fig. 3 is the A-A sectional drawing of Fig. 1.

In Fig. 1～3,1, locating hole, 2, handle, 3, reinforcing rib, 4, lockhole, 5, sealing ring.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Shown in Fig. 1～3, a kind of composite material manhole cover, it forms through hot press moulding with the terephthalic unsaturated polyester resin composite material, and its obverse and reverse all has reinforcing rib 3, and interior thickness is thicker than periphery, and outer border is taper; Inspection shaft is stamped two lockholes 4 and sets up lock, and lockhole 4 usefulness sealing mat cards cover; Inspection shaft covers positive two places handle 2, and the reverse side periphery has a seal groove embedding sealing ring 5.Positive circular reinforcing rib 3 and straight line reinforcing rib 3 combine, circular reinforcing rib 3 band radiation reinforcing ribs 3 in the middle of the reverse side.There is place's locating hole 1 at inspection shaft lid edge, cooperates with the inspection shaft seat, prevents the displacement of inspection shaft lid.

Present embodiment inspection shaft lid is shaped as circle, other can be square or rectangle.

Claims

1, a kind of composite material manhole cover is characterized in that: it forms through hot press moulding with the terephthalic unsaturated polyester resin composite material, and its obverse and reverse all has reinforcing rib (3), and interior thickness is thicker than periphery, and outer border is taper; Inspection shaft is stamped two lockholes (4) and sets up lock, and lockhole (4) covers with the sealing mat card; Inspection shaft covers positive two places handle (2), and the reverse side periphery has a seal groove embedding sealing ring (5).

2, a kind of composite material manhole cover according to claim 1 is characterized in that: positive circular reinforcing rib (3) and straight line reinforcing rib (3) combine, circular reinforcing rib (3) band radiation reinforcing rib (3) in the middle of the reverse side.

3, a kind of composite material manhole cover according to claim 1 is characterized in that: there is place's locating hole (1) at inspection shaft lid edge.

4, a kind of composite material manhole cover according to claim 1 is characterized in that: the shape of inspection shaft lid is circular, also can be square or rectangle.