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Circular base plate nodular cast iron bollard with full-retaining ledge

A ductile iron and bollard technology, which is applied to ships, shipping equipment, etc., can solve the problems that the actual stress characteristics cannot be matched, and cannot truly reflect the actual stress state of the bollard, so as to achieve accurate and reliable product performance and structure. Simple, reliable product performance

Inactive Publication Date: 2012-11-21
CCCC SECOND HARBOR CONSULTANTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The calculation of the existing bollard structure is mostly carried out by the cantilever beam method conforming to St. Wennan’s principle. Due to the actual proportion of the actual outline size of the bollard, the load characteristics and the boundary constraint characteristics, its actual force characteristics can no longer conform to the St. Wennan principle. Assuming the south principle, the calculation theoretical assumptions of the design using the cantilever beam calculation model are no longer valid, resulting in the bollard designed by the current method cannot truly reflect the actual force state of the bollard

Method used

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  • Circular base plate nodular cast iron bollard with full-retaining ledge
  • Circular base plate nodular cast iron bollard with full-retaining ledge
  • Circular base plate nodular cast iron bollard with full-retaining ledge

Examples

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Effect test

Embodiment 1

[0027] A kind of 50KN round chassis full eaves nodular cast iron bollard of the present invention comprises a column shell 1, a positioning plate 5, an anchor rod 2, a nut 3 and a washer 4, and the column shell 1 includes a chassis 6 at the bottom and a column neck 8 in the middle And the column cap 10 on the top; the chassis 6 is circular, with a diameter of 450mm, and a positioning plate 5 is arranged under it; the circumference of the chassis 6 is 350mm in diameter, and 4 anchor rods 2 with a diameter of 20mm are evenly arranged; the anchor rod 2 passes through the nut 3 and the washer 4. Fixedly installed in the installation hole 7 corresponding to the anchor rod 2 in the chassis 6, the top surface of the anchor rod 2 is slightly lower than the upper surface of the chassis 6, and the installation hole 7 is sealed by asphalt sand 9 and covers the top surface of the anchor rod 2. 2 The lower part is provided with a curved hook; the height of the cylindrical shell column neck ...

Embodiment 2

[0029] A 750KN round chassis of the present invention has a full eaves retaining ductile iron bollard, the diameter of the chassis 6 is 940mm, and the diameter of the circumference of the chassis 6 is 720mm. Eight anchor rods 2 with a diameter of 56mm are evenly arranged, and the lower part of the anchor rod 2 is provided with an anchor plate 11. The height of column shell column neck 8 is 400mm, which adopts the form of hollow variable section. Structure is with embodiment 1.

Embodiment 3

[0031] A 2000KN round chassis of the present invention has a full eaves ductile iron bollard, the chassis 6 has a diameter of 1300mm, and the circumference of the chassis 6 has a diameter of 900mm. Eight anchor rods 2 with a diameter of 76mm are evenly arranged, and the lower part of the anchor rod 2 is provided with an anchor plate 11. The column neck 8 of the column shell is 400 mm in height and adopts a hollow variable section form. Its top is hemispherical, the middle part is cylindrical, and the bottom is the same cylindrical shape as the middle part, that is, the opening angle is 0° (not shown in the figure). Out), the column shell 1 is made of QT450 ductile iron, the anchor plate 11 is made of Q235B steel, and the rest of the structure is the same as that of Embodiment 1.

[0032] The construction and installation method of the above-mentioned circular chassis full eaves ductile iron bollard, its steps are as follows:

[0033] Step 1: According to the requirements of th...

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Abstract

The invention relates to a circular base plate nodular cast iron bollard with full-retaining ledge, and belongs to mooring equipment. The circular base plate nodular cast iron bollard comprises a pillar shell, a positioning plate, anchor rods, a nut and a gasket, wherein the pillar shell comprises a base plate at the bottom, a pillar neck on the middle part and a pillar cap on the top; the base plate has a circular shape, and the positioning plate is arranged below the base plate; anchor rods are arranged at the periphery of the base plate uniformly; a hook and or an anchor plate is arranged on the lower part of each anchor rod; and the pillar shell and the pillar neck has a hollow variable cross-section structure. The bollard has the advantages of one-time casting moulding, simple structure, capability of meeting the performance requirements of actual mooring lines accurately and providing the correct use safety, reliability, durability and excellent cost performance.

Description

technical field [0001] The invention relates to a mooring device, in particular to a nodular cast iron bollard with a round bottom and full eaves used in wharf engineering. Background technique [0002] At present, most of the bollards used on the wharf are made of gray cast iron and cast steel. Gray cast iron has low cost and good corrosion resistance, but low strength and poor impact resistance; cast steel has high strength and strong impact resistance, but poor corrosion resistance and high cost. [0003] The calculation of the existing bollard structure is mostly carried out by the cantilever beam method conforming to St. Wennan’s principle. Due to the actual proportion of the actual outline size of the bollard, the load characteristics and the boundary constraint characteristics, its actual force characteristics can no longer conform to the St. Wennan principle. Assuming the south principle, the calculation theoretical assumptions of the design using the cantilever bea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B21/06E02B3/24
Inventor 刘松刘声树邹艳春望毅李银发
Owner CCCC SECOND HARBOR CONSULTANTS CO LTD