Manufacturing method of large-tonnage combined lifting hook
A manufacturing method and combined technology, applied in the direction of hooks, connecting components, etc., can solve the problems of increasing forging costs and technical difficulties, and achieve the effect of reducing manufacturing costs and reducing impact
Inactive Publication Date: 2010-02-17
SHANGHAI HEAVY MACHINERY PLANT +2
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Problems solved by technology
As the volume and quality of forgings increase, higher requirements will be placed on the tonnage of cast steel ingots, tonnage of forging equipment and forging technology, which will increase the cost and technical difficulty of forging
Method used
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Embodiment Construction
[0017] The invention relates to a method for manufacturing a large-tonnage combined hook, which is mainly used for manufacturing a large-tonnage non-standard hook with a lifting capacity greater than 500 tons. refer to figure 1 , the combined hook is assembled from a boom 1, a lifting ring chain 2, a hook body 3, a bearing 4, a nut 5, a hook seat cover 6, and a base 7, and the forging of the hook body is the component of the hook The key points and difficulties of manufacturing. refer to figure 2 , the hook body and the hook point of the hook body are respectively forged and formed by welding the hook point 301, the hook body 302, and the welding seam position 303. Through the design of the hook, the forging and welding of the hook body, and the processing and manufacturing of other parts of the hook, this embodiment has completed the production and manufacture of a hook with a lifting capacity of 4,000 tons. The specific manufacturing methods are summarized as follows:
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The invention discloses a manufacturing method of a large-tonnage combined lifting hook, comprising the following steps: a) according to the design requirement of the lifting hook, determining the diameter of a boom and the welding line position of the lifting hook body; b) performing strength check to the maximum stress point and the welding line position of the lifting hook body, and determiningthe blank size of the hook shank of the lifting hook body; c) forging the blank of the hook shank of the lifting hook body; d) processing the hook shank on the blank of the hook shank with a machining method; e) forging a hook tip; f) connecting the hook shank and the hook tip as a lifting hook body with a welding method; g) forging and processing a boom; h) assembling the hook body and the boomas the lifting hook by nuts and bearings. The method overcomes the technical problems existing during integrally forging and processing the large-tonnage lifting hook and lowers the manufacturing costof the lifting hook.
Description
technical field [0001] The invention relates to a method for manufacturing a large-tonnage combined hook, which belongs to the field of mechanical manufacturing. Background technique [0002] Large-tonnage hooks generally refer to non-standard hooks with a lifting capacity greater than 500 tons. The hook is the load-bearing part of the lifting equipment, and the heavy object is hoisted by the hoisting wire rope hanging on it, and the lifting load is transferred to the lifting equipment. The hook is mainly composed of three parts: the boom, the hook body and the hook tip. The hook body is the load-bearing part of the hook, and the heavy load acts on the hook through the steel cable hanging on the hook body; The load transmission part of the hook, the lifting load acting on the hook body is transmitted to the lifting equipment through the boom; the hook tip is the non-load-bearing part of the hook, mainly to prevent the lifting cable from accidentally falling out during the h...
Claims
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IPC IPC(8): B23P15/00B21K1/72
Inventor 董达善李成王海珊李铭严兵梅潇王鑫滕媛媛乔榛
Owner SHANGHAI HEAVY MACHINERY PLANT