Wharf ship loader telescoping mechanism rail production process and special rail butt joint tool thereof

A technology of telescopic mechanism and manufacturing process, which is applied in the direction of manufacturing tools, auxiliary devices, welding equipment, etc., can solve the problems of easy corrosion, reduced track life, and easy cracks in the gaps, so as to reduce production costs and extend track life , the effect of not easy to rust

Active Publication Date: 2013-07-10
NANTONG ZHENHUA HEAVY EQUIP MFG
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The second is not to dock, but to leave a gap at the track joint for installation
The first method is more costly for quenching, and cracks are more likely to appear at the butt weld
The second method is easy to rust and leave yellow water in the gap, which greatly reduces the life of the track

Method used

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  • Wharf ship loader telescoping mechanism rail production process and special rail butt joint tool thereof
  • Wharf ship loader telescoping mechanism rail production process and special rail butt joint tool thereof
  • Wharf ship loader telescoping mechanism rail production process and special rail butt joint tool thereof

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Experimental program
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Embodiment Construction

[0031] The specific process steps are:

[0032] First make the track segment: place the thickness, width, and length allowance when cutting the track segment, and use the milling machine to process the track segment thickness and width to remove the surface decarburization layer. The purpose is to prevent the track surface from not meeting the hardness requirements after quenching. And the quenching surface of the track segment is processed to remove the sharp angle of the track, so as to avoid the stress concentration after quenching and cracks at the sharp angle.

[0033] Then quench the track in sections and perform hardness testing: use an intermediate frequency furnace to quench the track in sections; figure 1 As shown, the hardness test is performed on the track surface of the track segment 8, and the multi-point hardness test is performed on the end of the track segment 8. The multi-point hardness test area a at the end of the track segment 8 includes the welding heat-a...

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PUM

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Abstract

The invention relates to a wharf ship loader telescoping mechanism rail production process and a special rail butt joint tool thereof. The production process includes the steps: producing two rail subsections; performing hardening and hardness measurement to the rail subsections; carrying out preparations before rail subsection welding, clamping the two rail subsections by the aid of the special rail butt joint tool to enable ends of the two rail subsections to be aligned and gapped, and performing weld preheating for the rail subsections; welding the rail subsections; performing postwelding heat insulation; and finally performing postwelding polishing and inspection. The machined rail subsections are subjected to medium-frequency hardening and then are in butt joint to form a whole. Joints are gapless, corrosion is less prone to occur, and service life of a rail is prolonged. Hardening of the whole rail is not needed, production cost is reduced, requirement on rail hardness is net, joints are less prone to cracks, and product quality is guaranteed.

Description

technical field [0001] The invention relates to a manufacturing process of a telescoping mechanism rail of a wharf ship loader, and also relates to a special rail docking tool for realizing the manufacturing process. Background technique [0002] In the telescopic mechanism of dock ship loaders at home and abroad, there are generally two types of rails, which are pressure plate standard rails and square steel quenching rails. Among them, the production of the square steel quenching track is relatively cumbersome, and the design length is between 12m and 30m. It needs to be cut in sections, and the single track is quenched and then butt jointed into a whole. The butt weld and heat-affected zone of ordinary welding cannot reach the construction blueprint. Quenching hardness requirements. In the past, the manufacturer adopted the following methods to avoid: the first is to weld the whole track after butt joint, and quench the whole track on site. The second is not to carry ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K37/04
Inventor 邹纪祥范正林陈飞戴伟朱娟
Owner NANTONG ZHENHUA HEAVY EQUIP MFG
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