CN2283336Y - Ladle refining furnace single arm electrode elevator - Google Patents
Ladle refining furnace single arm electrode elevator Download PDFInfo
- Publication number
- CN2283336Y CN2283336Y CN 96236392 CN96236392U CN2283336Y CN 2283336 Y CN2283336 Y CN 2283336Y CN 96236392 CN96236392 CN 96236392 CN 96236392 U CN96236392 U CN 96236392U CN 2283336 Y CN2283336 Y CN 2283336Y
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- electrode
- hoistable platform
- phase
- clamping limb
- lifting
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Abstract
The utility model relates to an electrode lifting device used for the refining of ladle. A lifting device drives a clamping arm to do lifting motion, an electricity feeding device is used for completing the electricity feeding task of an electrode. The utility model is characterized in that a lifting platform drives the clamping arm to do three phase synchronous lifting motion, the clamping arm adopts a short arm structure and is installed on the lifting platform, and one end of a ladle car is provided with an electrode pier tidy platform. The utility model has the advantages that the utility model effectively reduces the diameter of the electrode centre circle of the electrode, reduces the erosion of electric arcs to a packet lining, reduces running cost, has a compact and reasonable structure and light weight, improves smelting effects, lightens labor intensity and reduces device investment.
Description
The utility model relates to a kind of electrode lifting device that is used for ladle refining, mainly is made up of lowering or hoisting gear, clamping limb and power transmission device.
At present, be used for the electrode lifting device of ladle refining furnace, be traditional three-phase electrode independent-lifting form.Its structure is to overlap independently lowering or hoisting gear by three to drive three separate clamping transverse arms, and the three-phase electrode of installing on the clamping transverse arm is symmetrical in the ladle center and is equilateral triangle and distributes.Kind electrode lowering or hoisting gear equipment is huge, the cost height, and complex structure, the control difficulty is big, to workman's competency profiling height.In addition, because the molten bath face of ladle refining is more much smaller than the molten steel face of arc furnace, the arc power of the unit's of acting on molten bath face is more much higher than ordinary arc furnace, and heating process is open arc, so existing electrode lifting device causes electric arc quite serious to the erosion of cylinder-packing.And the consumption costs of cylinder-packing accounts for 1/3～1/2 of refining furnace operating cost, reduces the erosion of cylinder-packing, is the major requirement of ladle refining furnace to electrode lifting device.And the reform approach of existing electrode lifting device is to dwindle utmost point heart diameter of a circle D.The one, reduce electrode diameter, the 2nd, adopt compact structure as much as possible.Generally reduce electrode diameter, need to adopt high current density high-quality electrode, its defective is to cause the cost of electrode to increase, and the degree of dwindling is very limited.And compact as far as possible by structure, reach the purpose of dwindling utmost point heart diameter of a circle D, be quite difficult.Because be definitely can not interfere and produce the interelectrode arc of beating between three-phase electrode and the clamping transverse arm, must guarantee to have certain interval amount C.This shows, desire to dwindle utmost point heart diameter of a circle D, must be decided to be prerequisite to guarantee the gap value C value one between the transverse arm.Therefore, if reduce the electrode circle diameter D that three-phase electrode forms, must increase the angle α between the transverse arm, and the increase of the angle α between the transverse arm, certainly will will cause the overall dimension of electrode lifting device to increase greatly, not only cause the waste on the expense, and the degree of dwindling be quite limited.
For fear of the deficiencies in the prior art part, it is a kind of to use ordinary electrode, common ladle to be prerequisite that the utility model provides, and adopts the scheme that reduces electrode circle diameter D, the electrode lifting device of a kind of ladle refining furnace of design.
The technical solution of the utility model is: drive clamping limb by a lowering or hoisting gear and move up and down, finish the electric task of sending of electrode by power transmission device; It is characterized in that: drive clamping limb (4) by a hoistable platform (5) and do the step elevating movement of three-phase department, clamping limb (4) adopts the galianconism structure, and is installed on the hoistable platform (5).Lowering or hoisting gear is to go up a design lift cart that can roll (8) at lifting column (1) on column, and lift cart (8) is gone up hoistable platform (5) is installed, and lifting powered actuation mechanism (7) is fixed under the hoistable platform (5); When lifting powered actuation mechanism (7) when moving up and down, hoistable platform (5) and lift cart (8) move up and down along lifting column (1) thereupon.Three clamping limbs (4) are fixed on the hoistable platform (5), and connection therebetween belongs to removable connection; The layout mechanism of three clamping limbs (4) on hoistable platform (5) is: the middle phase clamping limb axis of symmetry overlaps with the symmetrical center line of ladle and the symmetrical center line of hoistable platform (5), both sides phase clamping limb is forward be symmetrically distributed in phase clamping limb both sides, be the α angle with middle angle mutually, three-phase electrode is symmetrical in ladle (6) center and is the equilateral triangle distribution.Because this structure has adopted short clamping limb design, so the α angle can be very big.Because there is relational expression in clearance C between the α angle mutually with electrode diameter D, electrode circle diameter B
With
, by two formulas as can be known, after the beeline C between clamping limb and electrode diameter D determine mutually, can obtain enough little electrode electrode circle diameter B on middle phase clamping limb and limit.
Power transmission device adopts flexible cable (9) and contact tube (2) to form, in order to make three phase of impedance balance as far as possible, the arrangement of contact tube (2) is: middle phase copper pipe symmetrical center line overlaps with the symmetrical center line of hoistable platform (5), the both sides of phase copper pipe during limit phase copper pipe is symmetrically distributed in, middle phase copper pipe is raised, and the three is equilateral triangle and distributes.Contact tube (2) is fixed on the hoistable platform (5), and does elevating movement thereupon.
In order to guarantee the single unit system reliability of operation, the main spandrel girder of hoistable platform (5), clamping limb (4) and contact tube are equipped with recirculated water cooling.
Because in smelting process, many factors will influence depletion rate inconsistent of three-phase electrode.For this reason, be provided with an electrode pier at an end of the car of stealthily substituting (11) and flush platform (10), be convenient in due course the neat three-phase electrode of pier.
Description of drawings:
The front view of Fig. 1: embodiment
The vertical view 1-lifting column 2-contact tube 3-electrode 4-clamping limb 5-hoistable platform 6-ladle 7-powered actuation mechanism 8-lift cart 9-flexible cable 10-electrode pier of Fig. 2: embodiment flushes platform 11 1 buggy ladle 12-cylinder-packing 13-directive wheel 14-wheel shaft 15-car beam 16-column body 17-guide rails
The utility model will be in conjunction with the embodiments (accompanying drawing) be further described:
Making one, for tap is the electrode lifting device that 20 tons LF ladle refining furnace is disposed.The centreline spacing K=2450mm of its ladle center line and lifting column (1), ladle internal diameter L=2450mm, the common graphite electrode of employing diameter B=300mm, stroke of electrode is 2000mm.Design electrode electrode circle diameter D=550mm, the length N=1020mm of clamping limb (4), limit phase clamping limb and middle angle α=35 between the clamping limb mutually ° according to technical thought of the present utility model.Clamping limb (4) is made up of clamping cylinder and protection water-cooled case, and the water-cooled case has the steel plate welding to make.Use Bolt Connection between clamping limb (4) and the hoistable platform (5), clamping limb (4) can be finely tuned on hoistable platform (5), to be provided with insulating material between the tram clamping limb (4) of guaranteeing electrode (3) and the hoistable platform (5), insulation resistance is not less than 0.5M Ω.Hoistable platform (5) is made up of spandrel girder and steel plate, and spandrel girder is made by the steel plate welding.The installation site of clamping limb (4) must be positioned on the spandrel girder of hoistable platform (5).Hoistable platform (5) width S=1900mm leans on one group of Bolt Connection between hoistable platform (5) and the lift cart (8).Can finely tune during installation, to guarantee the tram between hoistable platform (5) and the lift cart (8).Lift cart (8) is made up of car beam (15), wheel shaft (14) and directive wheel (13), and car beam (15) is made by the steel plate welding.Wheel shaft (14) material is the 45# steel, and directive wheel (13) material is the surface hardening of 35# steel.Directive wheel (13) is four, each two up and down.Before the fromer rail of column (1) fell in last directive wheel voltage rise, following guiding wheel load rear rail face can drive hoistable platform (5) with dolly and move up and down on lifting column (1).Lifting column (1) is made up of column body (16) and guide rail (17) by two.Column body (16) is made by steel plate welding, and guide rail (17) is welded on the column body (16) after by the surface hardening of 35# steel, and welds back processing, guarantees the direct dimension of guide rail (17).Two lifting columns (1) are installed on the 2500mm platform by bolt, size A=2120mm.Lifting column (1) top mark height is 8300mm.The powered actuation mechanism of lowering or hoisting gear (7) is a plunger piston fluid pressure cylinder, and hydraulic cylinder connects with it by bearing pin under platform.The hydraulic cylinder below connects with the 1000mm platform by bolt, and hydraulic cylinder is positioned on the platform center line, center line and ladle center line V=2000mm.Power transmission device (2) is made up of contact tube, and the contact tube material is a red copper.The three-phase contact tube, in raise mutually and be equilateral triangle and distribute, on lift cart (8) and hoistable platform (5), be equipped with the tram that bracing or strutting arrangement guarantees contact tube.On buggy ladle (11), be provided with the electrode pier and flush platform (10), be used for smelting process and three electrodes bottoms occur when not concordant, its pier is neat.
Like this, the single armed electrode lifting device of a 20T ladle refining furnace, can be under the prerequisite of using ordinary electrode and common ladle, successfully with traditional 20T ladle refining furnace, under the same conditions, the electrode circle diameter D of electrode is reduced to 550mm by 700mm, and overall dimension only is A=2120mm, and is also littler than traditional 20T ladle refining furnace A value.Therefore, realized present technique thought and.
The utility model advantage compared to existing technology is:
1, under the prerequisite of using ordinary electrode and common ladle, very effectively dwindled electrode electrode circle diameter D, reduced Electric arc greatly reduces the operating cost of ladle refining furnace to the erosion of cylinder-packing.
2, adopt simultaneously lifting of three-phase electrode, effectively simplified the rise fall of electrodes system of ladle refining furnace, structurally traditional Arm ladle refining furnace compact and reasonable more, in light weight.
3, compare with traditional ladle refining furnace motion, because three traditional arm ladle refining furnace three-phase electrode independent-liftings, because of This, the utility model is fastened greatly in the control of rise fall of electrodes motion and has been simplified. Be convenient to smelting process control, improved Metallurgical effect has lowered labour intensity, has reduced equipment investment.
4, compare with traditional ladle refining furnace motion, the utility model is convenient to process the fault of hoistable platform and clamping device. During smelting, the installation of the electrode of being more convenient for, spreading and maintenance.
Claims (4)
1, a kind of electrode lifting device that is used for ladle refining, mainly form by lowering or hoisting gear, clamping limb and power transmission device, it is characterized in that: lowering or hoisting gear adopts the hoistable platform (5) of lifting simultaneously, and clamping limb (4) adopts the galianconism structure, and is installed on the hoistable platform (5).
2, electrode lifting device as claimed in claim 1, it is characterized in that: lowering or hoisting gear is: go up a design lift cart that can slide (8) at lifting column (1) on column, lift cart (8) is gone up hoistable platform (5) is installed, and lifting powered actuation mechanism (7) is fixed on the hoistable platform (5).
3, electrode lifting device as claimed in claim 1 or 2, it is characterized in that: the layout mechanism of three clamping limbs (4) on hoistable platform (5) is: a middle phase clamping limb axis of symmetry, and overlap with the symmetrical center line of ladle and the symmetrical center line of hoistable platform (5), phase clamping limb both sides in two forward being symmetrically distributed in of limit phase clamping limb, be the α angle with the middle clamping limb of angle mutually, three-phase electrode is symmetrical in the ladle center and is the equilateral triangle distribution.
4, electrode lifting device as claimed in claim 1 or 2 is characterized in that: power transmission device (2) adopts contact tube (2).The layout mechanism of three-phase contact tube is: the both sides of phase copper pipe during the symmetrical center line of middle phase copper pipe symmetrical center line and hoistable platform (5) overlaps the limit copper pipe is symmetrically distributed in mutually, middle phase copper pipe is raised, and the three is the equilateral triangle distribution and is fixed on the hoistable platform (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96236392 CN2283336Y (en) | 1996-11-01 | 1996-11-01 | Ladle refining furnace single arm electrode elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96236392 CN2283336Y (en) | 1996-11-01 | 1996-11-01 | Ladle refining furnace single arm electrode elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2283336Y true CN2283336Y (en) | 1998-06-03 |
Family
ID=33912227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96236392 Expired - Fee Related CN2283336Y (en) | 1996-11-01 | 1996-11-01 | Ladle refining furnace single arm electrode elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2283336Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512353A (en) * | 2013-08-29 | 2014-01-15 | 上海宝锋工程技术有限公司 | Electrode uniformly-pushing device for LF and electrode uniformly-pushing trolley used in electrode uniformly-pushing device |
| CN103673584A (en) * | 2012-09-21 | 2014-03-26 | 山东莱芜煤矿机械有限公司 | Water-cooling electrode ring protection device for electric arc melting furnace |
-
1996
- 1996-11-01 CN CN 96236392 patent/CN2283336Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673584A (en) * | 2012-09-21 | 2014-03-26 | 山东莱芜煤矿机械有限公司 | Water-cooling electrode ring protection device for electric arc melting furnace |
| CN103512353A (en) * | 2013-08-29 | 2014-01-15 | 上海宝锋工程技术有限公司 | Electrode uniformly-pushing device for LF and electrode uniformly-pushing trolley used in electrode uniformly-pushing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |