CN103496631A

CN103496631A - Method for vertically hanging rolling mill housing

Info

Publication number: CN103496631A
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: 2014-01-08
Anticipated expiration: 2033-09-29
Also published as: CN103496631B

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 vital part during steel rolling equipment is manufactured, its weight is generally 40～400T left and right, highly generally 8～16 meters left and right, milling train is when fabrication shop's trial assembly is equipped with and finally install in erecting stage, all to make mill housing 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 is erect, mill housing can be installed the parts such as screw-down in advance when keeping flat, so usually can't 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 can make the setting process of mill housing 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 housings and safety have become a technical barrier of relevant heavy-duty machine manufacturing.

Summary of the invention

The purpose of this invention is to provide the hoisting method that a kind of mill housing is erect, the poor stability that the hoisting method that the existing mill housing of solution is erect exists, the problem that affects product design.

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

Step 1) hangs over isometric steel rope four group of one end altogether on crown block hook, the other end hangs on two groups of hanging scrolls of suspender beam inboard, isometric steel rope two is hung on two groups of hanging scrolls in the suspender beam outside at the two ends of two groups totally, and anticreep plate one is all installed at the two ends of four groups of hanging scrolls;

Step 2) mill housing is lain against to ground in advance, flitch on the pad of mill housing bottom, hang over two groups of sagging middle parts of isometric steel rope two on two hangers of mill housing;

The step 3) mill housing is in erectting the lifting process, and crown block hook is in the process of upward movement, and crown block hook also will be correspondingly moves to the rotation direction of mill housing upper end, until mill housing fully erects and slings.

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

On the suspender beam, hanging scroll is installed, hanging scroll longitudinally is provided with four groups altogether, wherein is positioned at two groups of hanging scrolls of suspender beam inboard for the isometric steel rope one of hooking that makes progress, and is positioned at two groups of hanging scrolls in the suspender beam outside for the downward isometric steel rope two of hooking.

The hanging scroll position of mounting hole is provided with panelling.

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

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

The accompanying drawing explanation

Fig. 1 is that common mill housing setting process steel rope can be interfered schematic diagram with the mill housing bight;

Fig. 2 is the structural representation (main looking) that the mill housing that uses of the inventive method is erect suspender;

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

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

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 is used starts to erect the schematic diagram of lifting;

Fig. 7 is the schematic diagram that the inventive method mill housing is erect the 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. the anticreep plate one, 7. panelling, 8. the anticreep plate two, 9. flitch, 10. mill housing, 11. hangers.

The specific embodiment

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 hangers 11, in the lifting process, isometric steel rope 1 is dawdled with the mill housing upper end, is easy to occur dangerous.

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

Totally four groups of isometric steel ropes 1, an 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 not adopt the reason of two groups be to guarantee that suspender beam 3 remains horizontality in the lifting process; Totally two of the isometric steel ropes 24 of bottom, the both ends of every hang over hanging scroll 5 outsides of suspender beam 3, the sagging hanger 11 that is hooked on mill housing in middle part;

Suspender beam 3 adopts six block plate welding productions to form, after suspender beam 3 each Plate Weldings complete, the mounting hole of processing hanging scroll 5, be preferably in hanging scroll 5 position of mounting hole and be provided with panelling 7 with the (see figure 4) of gaining in strength, and then pre-processed hanging scroll 5 packed into and weld with suspender beam 3.Stressed even in order to make 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 the 35# steel makings, and through heat treatment quenching and tempering, existing intensity preferably, have again weldability.Suspender beam 3 and hanging scroll 5 should be selected 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 the inventive method is erect mill housing, as can be seen from the figure, isometric steel rope 24 is answered long enough, so that suspender beam 3 is not interfered in the process of erectting lifting with mill housing 10; Simultaneously, be pulled out the danger of mill housing for fear of the plug-in type hanger sometimes adopted, the width between centers B of two hanging scrolls 5 in suspender beam 3 outsides should be slightly less than the hanger 11 slot part width between centers C of mill housing 10, but can not be little too many, little too much not only can increase the pulling force of isometric steel rope 24, but also easily causes the interference in isometric steel rope 24 and mill housing 10 upper outer bights.Isometric steel rope 24 two ends of totally two groups only hangs on two groups of hanging scrolls 5 in suspender beam 3 outsides, in order to reduce the cantilever amount of isometric steel rope 24 force part on hanging scroll 5, the width dimensions A (seeing Fig. 4) of suspender beam 3 should be greater than mill housing 10 hanger 11 slot part diameter D.After meeting above condition, mill housing 10 just can not produce the situation of dawdling of interfering with suspender beam 3 and steel rope in the process of erectting lifting.

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

Step 1) is according to Fig. 2 and Fig. 5, by isometric steel rope 1 totally four group of one end hang on crown block hook 1, the other end hangs on two groups of hanging scrolls 5 of suspender beam 3 inboards, isometric steel rope 24 is hung on two groups of hanging scrolls 5 in suspender beam 3 outsides at the two ends of two groups totally, and 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 to ground in advance, at mill housing 10(mode of operation) the upper flitch 9 of bottom pad, for erect the bight of lifting process protection lower end at mill housing 10, if the degree of depth of mill housing 10 hanger 11 slot parts is more shallow, can in hanger 11 outer face fixed installation anticreep plate two 8(Fig. 5 embodiment, arrange), prevent that isometric steel rope 24 from deviating from erectting the lifting process, improve safety, two groups of sagging middle parts of isometric steel rope 24 hang on two hangers 11 of mill housing 10, because isometric steel rope 24 and hanger 11 can produce relative sliding in erectting the lifting process, for reducing friction, the scope planted agent who is in contact with one another at both smears grease in advance, make to slide more smooth and easy,

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

Claims

1. the hoisting method that mill housing is erect, is characterized in that, according to following steps, implements:

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

Step 2) mill housing (10) is lain against to ground in advance, at the upper flitch (9) of mill housing (10) bottom pad, two groups of isometric steel rope two (4) sagging middle parts are hung on two hangers (11) of mill housing (10);

Step 3) mill housing (10) is in erectting the lifting process, and crown block hook (1) is in the process of upward movement, and crown block hook (1) also will be correspondingly moves to the rotation direction of mill housing (10) upper end, until mill housing fully erects and slings.

2. the hoisting method that mill housing according to claim 1 is erect, it is characterized in that: hanging scroll (5) is installed on described suspender beam (3), hanging scroll (5) longitudinally is provided with four groups altogether, wherein be positioned at the inboard two groups of hanging scrolls (5) of suspender beam (3) for the isometric steel rope one (2) of hooking that makes progress, be positioned at two groups of hanging scrolls (5) in suspender beam (3) outside for the downward isometric steel rope two (4) of hooking.

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

4. the hoisting method that mill housing according to claim 1 is erect 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 slot part width between centers of mill housing (10); The width dimensions of suspender beam (3) should be greater than mill housing (10) hanger (11) slot part diameter.