CN103496631B

CN103496631B - Method for vertically hanging rolling mill housing

Info

Publication number: CN103496631B
Application number: CN201310461059.6A
Authority: CN
Inventors: 徐卫红; 吴振奇
Original assignee: MCC SFRE Heavy Industry Equipment Co Ltd
Current assignee: MCC SFRE Heavy Industry Equipment Co Ltd
Priority date: 2013-09-29
Filing date: 2013-09-29
Publication date: 2015-04-29
Anticipated expiration: 2033-09-29
Also published as: CN103496631A

Abstract

The invention discloses a method for vertically hanging a rolling mill housing. The method comprises the following steps: step one, hanging one ends of four groups of steel wire ropes I with the equal length on a crane hook, hanging the other ends of two groups of hanging shafts on the inner side of a hanger beam, hanging two ends of two groups of steel wire ropes II with the equal length on two groups of hanging shafts on the outer side of the hanger beam, and mounting anti-drop plates I at two ends of the four groups of hanging shafts; step two, placing the rolling mill housing on the ground flatly in advance, cushioning a wood beam at the lower part of the rolling mill housing, and hanging the drooping middle parts of the two groups of steel wire ropes II with the equal length on two hanging lugs of the rolling mill housing; step three, during the vertical hanging process of the rolling mill housing and during the upward moving process of the crane hook, further moving the crane hook correspondingly in the rotation direction towards the upper end of the rolling mill housing till the rolling mill housing is vertically hung completely. The method provided by the invention is simple and easy to implement, and convenient to operate, thus obviously improving the safety.

Description

The hoisting method that a kind of mill housing is erect

Technical field

The invention belongs to heavy-duty machinery erecting equipment technical field, relate to the hoisting method that a kind of mill housing is erect.

Background technology

Mill housing is one of the vital part during steel rolling equipment manufactures, its weight is generally about 40 ~ 400T, highly general at about 8 ~ 16 meters, when milling train is equipped with in fabrication shop's trial assembly and finally installs in erecting stage, mill housing all will be made to reach the upright state of final work, due to memorial archway be belong to weight greatly, highly high sheet parts, its setting process is a very stubborn problem always.

In order to reduce the work capacity after mill housing setting, the parts such as screw-down can be installed when keeping flat by mill housing in advance, so usually cannot lift by crane from the middle and upper part of mill housing, at present, the hoisting method that mill housing is erect normally adopts steel rope directly to hang over the method for mill housing outside lug, as shown in Figure 1, this method is erect in the process of lifting at mill housing, steel rope can be interfered with the bight of mill housing upper outer, not only can steel rope be gnawed disconnected by the corner angle of the scuffing of mill housing finished surface or mill housing, but also the setting process of mill housing can be made not steady due to this scratch, make the setting process of mill housing very dangerous, affect product design and safety in production.The lifting of therefore erectting for various mill housing and safety have become a technical barrier of relevant heavy-duty machine manufacturing.

Summary of the invention

The object of this invention is to provide the hoisting method that a kind of mill housing is erect, solve the poor stability of the hoisting method existence that existing mill housing is erect, affect the problem of product design.

The technical solution adopted in the present invention is, the hoisting method that a kind of mill housing is erect, and implements according to following steps:

Isometric steel rope is had altogether four groups of one end and hangs on crown block hook by step 1), the other end hangs on two groups of hanging scrolls inside suspender beam, the two ends of totally two groups hung on two groups of hanging scrolls outside suspender beam by isometric steel rope two, anticreep plate one is all installed at the two ends of four groups of hanging scrolls;

Step 2) mill housing is lain against ground in advance, flitch on the pad of mill housing bottom, middle part sagging for two groups of isometric steel ropes two is hung on two hangers of mill housing;

Step 3) mill housing is in setting lifting process, and crown block hook is in the process of upward movement, and crown block hook also will move to correspondingly the rotation direction of mill housing upper end, slings until mill housing is erect completely.

The hoisting method that mill housing of the present invention is erect, is further characterized in that:

Suspender beam is provided with hanging scroll, and hanging scroll is longitudinally provided with four groups altogether, is wherein positioned at two groups of hanging scrolls inside suspender beam for the upwards isometric steel rope one of hooking, is positioned at two groups of hanging scrolls outside suspender beam for the isometric steel rope two of downward hooking.

Hanging scroll position of mounting hole is provided with panelling.

The width between centers of two hanging scrolls outside suspender beam should be slightly less than the hanger groove portion width between centers of mill housing; The width dimensions of suspender beam should be greater than mill housing hanger groove portion diameter.

The invention has the beneficial effects as follows, the method equipment therefor is simple, easy to operate, safety significantly improves, practical, greatly reduces the consumption of steel rope, reduce cost, improve the presentation quality of product, and there is certain commonality, the overhead traveling crane of different size can be used to erect all kinds of mill housing of lifting.

Accompanying drawing explanation

Fig. 1 is that usual mill housing setting process steel rope can interfere schematic diagram with mill housing bight;

Fig. 2 is the structural representation (master looks) of the mill housing setting suspender that the inventive method uses;

Fig. 3 is the left side view of Fig. 2;

Fig. 4 is the cutaway view of the mill housing setting suspender that the inventive method uses;

Fig. 5 is the schematic diagram after the mill housing that uses of the inventive method is erect;

Fig. 6 is that the mill housing that the inventive method uses starts to erect the schematic diagram lifted by crane;

Fig. 7 is the schematic diagram that the inventive method mill housing erects lifting pilot process;

Fig. 8 is the lateral plan after the inventive method mill housing is erect.

In figure, 1. crown block hook, 2. isometric steel rope one, 3. suspender beam, 4. isometric steel rope two, 5. hanging scroll, 6. anticreep plate one, 7. panelling, 8. anticreep plate two, 9. flitch, 10. mill housing, 11. hangers.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.

With reference to Fig. 1, the hoisting method that existing mill housing is erect, normally crown block hook 1 adopts isometric steel rope 1 directly to hang on mill housing 10 upper outside hanger 11, in lifting process, isometric steel rope 1 is dawdled with mill housing upper end, is easy to occur danger.

With reference to Fig. 2, Fig. 3 and Fig. 4, the structure that the mill housing that the inventive method relies on erects suspender is, comprise a horizontally disposed suspender beam 3, suspender beam 3 is provided with hanging scroll 5, hanging scroll 5 is for hanging steel rope use, and hanging scroll 5 is longitudinally provided with four groups altogether, is wherein positioned at two groups of hanging scrolls 5 inside suspender beam 3 for the upwards isometric steel rope 1 of hooking, be positioned at two groups of hanging scrolls 5 outside suspender beam 3 for the isometric steel rope 24 of downward hooking, the two ends often organizing hanging scroll 5 are provided with anticreep plate 1.Anticreep plate 1 is build-up type, hangs over after on hanging scroll 5, with bolt, anticreep plate 1 is put together on the end face of hanging scroll 5 at steel rope, prevents steel rope in lifting process from deviating from;

Isometric steel rope 1 totally four groups, one end hangs on hanging scroll 5, and the other end hangs on crown block hook 1, and isometric steel rope 1 adopts four groups and do not adopt the reason of two groups to be to ensure that suspender beam 3 remains horizontality in lifting process; The isometric steel rope 24 of bottom totally two, the both ends of every root hang over outside the hanging scroll 5 of suspender beam 3, the sagging hanger 11 being hooked on mill housing in middle part;

Suspender beam 3 adopts six block plate welding productions to form, after each Plate Welding of suspender beam 3 completes, the mounting hole of processing hanging scroll 5, is preferably provided with panelling 7 with (see figure 4) of gaining in strength at hanging scroll 5 position of mounting hole, is then loaded by pre-processed hanging scroll 5 and weld with suspender beam 3.In order to make uniform force between hanging scroll 5 and suspender beam 3, hanging scroll 5 adopts coordinating of H8/f7 with the mounting hole on suspender beam 3, and hanging scroll 5 adopts 35# steel making, and through heat treatment quenching and tempering, existing good intensity, has weldability again.Suspender beam 3 and hanging scroll 5 should select suitable size according to the position of hung mill housing weight and hanging scroll 5.

With reference to Fig. 5, be the schematic diagram after mill housing is erect by the inventive method, as can be seen from the figure, isometric steel rope 24 answers long enough, does not interfere erectting in the process of lifting by crane to make suspender beam 3 and mill housing 10; Simultaneously, in order to avoid the plug-in type hanger sometimes adopted is pulled out the danger of mill housing, the width between centers B of two hanging scrolls 5 outside suspender beam 3 should be slightly less than the hanger 11 groove portion width between centers C of mill housing 10, but can not be too much little, the little pulling force that too much not only can increase isometric steel rope 24, but also easily cause the interference in isometric steel rope 24 and mill housing 10 upper outer bight.Isometric steel rope 24 two ends of totally two groups only hangs on two groups of hanging scrolls 5 outside suspender beam 3, in order to reduce the cantilever amount of isometric steel rope 24 force part on hanging scroll 5, the width dimensions A (see Fig. 4) of suspender beam 3 should be greater than mill housing 10 hanger 11 groove portion diameter D.After meeting above condition, mill housing 10 would not produce the situation of interfering and dawdling with suspender beam 3 and steel rope in the process erectting lifting.

The inventive method utilizes above-mentioned device, implements according to following steps:

Step 1) is according to Fig. 2 and Fig. 5, isometric steel rope 1 is hung on crown block hook 1 in totally four groups of one end, the other end hangs on two groups of hanging scrolls 5 inside suspender beam 3, the two ends of totally two groups hung on two groups of hanging scrolls 5 outside suspender beam 3 by isometric steel rope 24, anticreep plate 1 is all installed at the two ends of four groups of hanging scrolls 5;

Step 2) as shown in Figure 6, mill housing 10 is lain against ground in advance, at mill housing 10(mode of operation) flitch 9 on the pad of bottom, for erectting the bight protecting lower end in lifting process at mill housing 10, if the degree of depth in mill housing 10 hanger 11 groove portion is more shallow, can arrange in hanger 11 outer face fixed installation anticreep plate two 8(Fig. 5 embodiment), prevent isometric steel rope 24 from deviating from setting lifting process, improve safety, the sagging middle part of two groups of isometric steel ropes 24 hangs on two hangers 11 of mill housing 10, because isometric steel rope 24 is being erect in lifting process can produce relative sliding with hanger 11, for reducing friction, the scope planted agent contacted with each other at both smears grease in advance, make slip more smooth and easy,

Step 3) as shown in Figure 7, it is the pilot process that mill housing 10 erects lifting, as can be seen from this figure, mill housing 10 is in setting lifting process, mill housing 10 can rotate on flitch 9 with its underpart angle, in setting lifting process, crown block hook 1 is in the process of upwards rotating, the deflection situation of observing crown block hook 1 top steel rope group should be noted, crown block hook 1 also will move (the right side rollback namely in Fig. 7 moves) to correspondingly the rotation direction of mill housing 10 upper end, top steel rope group is made to be unlikely to deflection too many, sling until mill housing is erect completely, Fig. 8 is the lateral plan after mill housing is erect, enter follow-up fitting process.

Claims

1. a hoisting method for mill housing setting, is characterized in that, implement according to following steps:

Step 1) isometric steel rope one (2) is hung on crown block hook (1) in totally four groups of one end, the other end hangs on two groups of hanging scrolls (5) of suspender beam (3) inner side, the two ends of totally two groups hung on two groups of hanging scrolls (5) in suspender beam (3) outside by isometric steel rope two (4), anticreep plate one (6) is all installed at the two ends of four groups of hanging scrolls (5);

Described suspender beam (3) is provided with hanging scroll (5), hanging scroll (5) is longitudinally provided with four groups altogether, the two groups of hanging scrolls (5) being wherein positioned at suspender beam (3) inner side, for the upwards isometric steel rope one (2) of hooking, are positioned at two groups of hanging scrolls (5) in suspender beam (3) outside for the isometric steel rope two (4) of downward hooking;

Step 2) mill housing (10) is lain against ground in advance, flitch (9) on the pad of mill housing (10) bottom, hangs on two hangers (11) of mill housing (10) by middle part sagging for two groups of isometric steel ropes two (4);

Step 3) mill housing (10) is in setting lifting process, crown block hook (1) is in the process of upward movement, crown block hook (1) also will move to correspondingly the rotation direction of mill housing (10) upper end, sling until mill housing is erect completely.

2. the hoisting method of mill housing setting according to claim 1, is characterized in that: described hanging scroll (5) position of mounting hole is provided with panelling (7).

3. the hoisting method of mill housing setting according to claim 1, is characterized in that: the width between centers of two hanging scrolls (5) in described suspender beam (3) outside should be slightly less than hanger (11) the groove portion width between centers of mill housing (10); The width dimensions of suspender beam (3) should be greater than mill housing (10) hanger (11) groove portion diameter.