CN201512348U

CN201512348U - Combined lifting hook with large tonnage

Info

Publication number: CN201512348U
Application number: CN 200920077315
Authority: CN
Inventors: 王海珊; 董达善; 严兵; 李成; 李铭; 梅潇; 刘海洋
Original assignee: Shanghai Heavy Machinery Engineering Co Ltd; Shanghai Maritime University; Shanghai Zhenghua Heavy Industries Co Ltd
Current assignee: Shanghai Heavy Machinery Engineering Co Ltd; Shanghai Maritime University; Shanghai Zhenghua Heavy Industries Co Ltd
Priority date: 2009-06-26
Filing date: 2009-06-26
Publication date: 2010-06-23
Anticipated expiration: 2019-06-26

Abstract

The utility model relates to a combined lifting hook with large tonnage, which has the elevating capacity generally more than 500t of a non-standard lifting hook with large tonnage. The combined lifting hook is provided with two or more hook points. The combined lifting hook comprises a lifting hook body (3) and a lifting rod (1) which are manufactured in a separated way, and a hook body and hook points of the lifting hook body (3) are separately forged; the lifting hook body is formed by welding the hook body (302) and the hook points (301); the lifting rod (1) passes through a round through hole in the center of the lifting hook body (3); and the combined lifting hook is formed by assembling a nut (5) and a horizontal bearing (4). The lifting rod (1) and the lifting hook body (3) are designed to be in clearance fit, and the horizontal bearing is installed on the lifting hook body, so that the lifting rod and the lifting hook body can be ensured to rotate relatively. The combined lifting hook has elevating capacity of 4000t.

Description

A kind of large-tonnage combined lifting hook

Technical field

The utility model relates to a kind of large-tonnage combined lifting hook, belongs to field of engineering components.

Background technology

The large-tonnage suspension hook is meant that generally hoisting capacity is greater than 500 tons non-standard suspension hook.Suspension hook is the load bearing component of weight-lifting equipment, by hanging lifting cable wire lifting weight thereon, with the lifting loading transfer to weight-lifting equipment.Suspension hook mainly is made of suspension rod, hook body, bill three parts, and wherein the hook body is the bearing part of suspension hook, weight by hang hook cable wire on one's body with the lifting loading to suspension hook; Suspension rod is the loading transfer part of suspension hook, acts on the hook heavy lift that rises on one's body and is delivered on the weight-lifting equipment by suspension rod; Bill is the non-bearing part of suspension hook, mainly is in order to prevent that lifting cable wire accident in the process of hanging from deviating from.A heavy lift maximum of large-tonnage suspension hook can reach thousands of tons of, its volume and quality are all very huge, adopting contour forging technique to forge needs special super-tonnage forging equipment, add manufacturing and designing of forging die, initial investment is all very high, so the large-tonnage suspension hook can only adopt open die forging to forge processing.

The large-tonnage suspension hook all is many hooks suspension hook generally, and two and above bill are arranged on the hook, and the variation of suspension hook cross sectional shape greatly, and open die forging can't directly forge the suspension hook profile.Therefore, the large-tonnage suspension hook generally adopts the method for forging blank, has the suspension hook blank of certain stock left for machining by forging, and the application machine processing technology is processed suspension hook on blank.In order to process bill on the suspension hook blank, blank needs certain stock left for machining, thereby the volume of blank is much bigger with respect to the volume of suspension hook.Along with the increase of forging volume and quality, all can propose higher requirement, thereby improve forging cost and technical risk the tonnage of casting steel ingot, the tonnage and the Forging Technology of forging equipment.

The utility model content

The utility model is a kind of large-tonnage combined lifting hook.In order to reduce the forging volume, the utility model adopts the design of combination suspension hook, changes the solid forging of suspension hook into the forging of hook and the processing and manufacturing of other each part; Hook forges uses the division system technology for making, by welding technique hook body and bill is connected as one then.Two and above bill are arranged on the hook, and the hook that is provided with through hole in suspension hook is nested in by suspension rod assembles, and hook is welded by bill, hook body.The center through hole that annulus is arranged on the suspension rod, has screw thread, suspension rod to pass hook down is assembled into combined lifting hook with nut and upper and lower two bearings; Be free-running fit between suspension rod and the hook center through hole, suspension rod can rotate relatively with hook.

Description of drawings

Fig. 1 is the composition scheme drawing of large-tonnage combination suspension hook;

Fig. 2 is the scheme drawing of large-tonnage hook;

Among the figure:

1, suspension rod 2, lifting round-link chain 3, hook 4, bearing 5, nut 6, hook cover for seat 7, base 301, bill 302, hook body 303, position while welding

The specific embodiment

The utility model is a large-tonnage combined lifting hook, and hoisting capacity is greater than the non-standard suspension hook of 500 tons large-tonnage.Concrete manufacture method is summarized as follows:

According to the forging ability design hook body blank of hook body size and forging equipment, formulate free forging process, on the large-tonnage hydraulic compressor, utilize large-scale steel ingot to forge hook body blank, according to the designing requirement of hook body, adopt carbon arc air gouging technology on forging blank, to process the hook body; The hook body contour is like " ingot " appearance, and hook body 302 central authorities are provided with a manhole; Adopt conventional Forging Technology to forge the processing bill; On the two ends position while welding 303 of two bills 301 by the last plane that is placed on " ingot " shape hook body, adopt the completepenetration welding process that hook body and two bills are welded as integral body.Promptly realized the manufacturing of hook 3.

Use the big machinery Fabricating machinery suspension rod is carried out processing and manufacturing; Annulus is arranged on the suspension rod 1, down screw thread arranged; Lifting round-link chain 2, nut 5, hook cover for seat 6, base 7 are the standard machinery part, and according to designing requirement processing, guarantee that the central, circular through hole of hook 3 and suspension rod 1 are the bigger free-running fit in gap: actual value reaches 20mm.

With reference to Fig. 1, suspension rod 1 passes hook 3 central, circular through holes, assembles combined lifting hook by suspension rod 1, lifting round-link chain 2, hook 3, upper and lower two horizontal bearings 4, nut 5, hook cover for seat 6, base 7.Because between suspension rod 1 and the hook 3 central, circular through holes is free-running fit, and horizontal bearing is installed on the hook 3, and suspension rod 1 can rotate relatively with hook 3.

The utility model is that hoisting capacity has reached 4000 tons suspension hook.

Claims

1. a large-tonnage combined lifting hook has two and above bill on the hook, it is characterized in that: the hook (3) that is provided with through hole in suspension rod (1) is nested in assembles, and hook (3) is welded by bill (301), hook body (302).

2. suspension hook according to claim 1 is characterized in that: annulus is arranged on the described suspension rod (1), have screw thread, suspension rod (1) to pass hook (3) central, circular through hole down, with nut (5) and upper and lower two bearings (4) assembling.

3. suspension hook according to claim 1 and 2 is characterized in that: be free-running fit between suspension rod (1) and the hook (3), suspension rod (1) can rotate relatively with hook (3).