CN103185458B - A kind of steel-smelting electric furnace and furnace cover lifting device thereof - Google Patents
A kind of steel-smelting electric furnace and furnace cover lifting device thereof Download PDFInfo
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- CN103185458B CN103185458B CN201110448254.6A CN201110448254A CN103185458B CN 103185458 B CN103185458 B CN 103185458B CN 201110448254 A CN201110448254 A CN 201110448254A CN 103185458 B CN103185458 B CN 103185458B
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- oil
- hydraulic cylinder
- lifting device
- cover lifting
- furnace cover
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- 238000003723 Smelting Methods 0.000 title claims abstract description 30
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 26
- 239000003921 oil Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000009865 steel metallurgy Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000009847 ladle furnace Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000931705 Cicada Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The embodiment of the present invention relates to the steel-smelting electric furnace of field of steel metallurgy, particularly a kind of steel-smelting electric furnace and furnace cover lifting device thereof, for solving the hypodynamic problem of lifting that furnace cover lifting device of the prior art exists.The furnace cover lifting device of a kind of steel-smelting electric furnace of the embodiment of the present invention comprises: hoistable platform and at least two hydraulic cylinders; Wherein, one end of hydraulic cylinder is connected with hoistable platform, and the other end is connected with the bell be positioned at inside hoistable platform; The oil-in of each hydraulic cylinder is connected with the oil-supplying port of hydraulic oil; The oil-out of each hydraulic cylinder is connected with the oil return port of hydraulic oil.The furnace cover lifting device of the steel-smelting electric furnace of the embodiment of the present invention adopts at least two hydraulic cylinder parallel, thus substantially increases the lifting force of furnace cover lifting device.
Description
Technical field
The present invention relates to the steel-smelting electric furnace of field of steel metallurgy, particularly a kind of steel-smelting electric furnace and furnace cover lifting device thereof.
Background technology
Electric furnace arrangement for producing steel (ElectricArcFurnace) is that one adopts electric energy or oxygen, carbon dust, fuel oil etc. as the energy, adopts steel scrap, molten iron etc. as the steelmaking equipment of raw material.Ladle furnace (LadleFurnace) is a kind of special shape of electric arc furnaces, and ladle furnace is a kind of external refining equipment utilizing electric arc heated under vacuum.
In ladle furnace smelting process, in order to save energy consumption, preventing pollution surrounding environment, generally the bell of ladle furnace being covered on the opening of body of heater upper end, forming an airtight space.Also need to add in the body of heater of ladle furnace the raw material needed for steel-making such as steel scrap simultaneously in good time, in reinforced process, need again bell upwards to promote, to expose the opening of body of heater upper end, thus raw material can be added from opening part in body of heater.After reinforced, then by bell to decline, be again covered on the opening of body of heater upper end to make bell.Therefore, ladle furnace generally all comprises furnace cover lifting device, in order to complete the descending operation of above-mentioned bell.
The furnace cover lifting device of ladle furnace generally adopts hydraulic drive, and existing furnace cover lifting device comprises: hydraulic cylinder b1 ~ b3 that hoistable platform a and three is connected in series mutually; Wherein, hoistable platform a is provided with three through hole a1 ~ a3, as shown in Figure 1; One end of hydraulic cylinder b1 ~ b3 is arranged in three through hole a1 ~ a3 of hoistable platform a respectively, and is fixed on this hoistable platform a, and the other end (i.e. piston rod) of hydraulic cylinder b1 ~ b3 is connected with the hanger c1 of bell c respectively, as shown in Figure 2.
The operation principle of existing furnace cover lifting device as shown in Figure 3, hydraulic oil flows through reversal valve d, check valve e, choke valve f and ball valve h successively by oil-supplying port P, and entered in the cavity of hydraulic cylinder b1 by the oil-in of hydraulic cylinder b1, the oil-out of hydraulic cylinder b1 is connected with the oil-in of hydraulic cylinder b2, is transferred in the cavity of hydraulic cylinder b2 by hydraulic oil by the oil-in of hydraulic cylinder b2; The oil-out of hydraulic cylinder b2 is connected with the oil-in of hydraulic cylinder b3, hydraulic oil is transferred to by the oil-in of hydraulic cylinder b3 in the cavity of hydraulic cylinder b2, realize the fuel feeding operation of hydraulic cylinder, the oil-out of hydraulic cylinder b3 connects ball valve h, overflow valve g, choke valve f, check valve e and reversal valve d successively, to oil return port T, realize the oil return operation of hydraulic oil; In figure, ball valve k is used for leveling bell.
In Fuel injection system, along with the increase of the hydraulic oil in hydraulic cylinder b1 ~ b3 cavity, the piston rod promoting hydraulic cylinder b1 ~ b3 moves up, thus drives bell to move up, and achieves the lifting operation of bell; In oil return process, along with the minimizing of the hydraulic oil in hydraulic cylinder b1 ~ b3 cavity, the piston rod of hydraulic cylinder b1 ~ b3 is moved down, thus drive bell to move down, achieve the step-down operation of bell.
Maximum hoist capacity due to furnace cover lifting device is the product of the sectional area of the piston of hydraulic cylinder and the oil pressure of hydraulic oil, wherein the oil pressure of hydraulic oil is steady state value, adopt three hydraulic cylinders to be connected in series in existing furnace cover lifting device, in real work, the maximum hoist capacity of furnace cover lifting device is the product of the sectional area of the piston of a hydraulic cylinder and the oil pressure of hydraulic oil.When the gravity of bell exceedes the maximum hoist capacity of furnace cover lifting device (as bell in smelting process adhered to a large amount of cold steel, bell is made to become heavy gradually, the gravity of bell is caused to exceed the maximum hoist capacity of furnace cover lifting device), furnace cover lifting device can be caused can not to play the effect promoting bell, i.e. furnace cover lifting device cisco unity malfunction, thus cause the descending operation that cannot realize bell in smelting process.
In order to ensure that energy is in good time to filling in body of heater in smelting process, existing way is: when the gravity of bell exceedes the maximum hoist capacity of furnace cover lifting device, bell is fixed on specific position, to expose the opening on furnace shell; But can following point be caused thus: one is that bell is fixed on specific position for a long time, easily makes the molten steel generation secondary oxidation produced in smelting process, thus cannot ensure to make steel quality; Two is owing to there is space for a long time between bell and body of heater, and the dust easily making smelting process produce can shed from space, thus causes the pollution of working environment; In addition, due to the existence in space, easily make heat during smelting distribute from space, and in order to ensure heat when smelting, need to increase conduction time to increase heat, thus add the consumption of electric energy.
In sum, the lifting force of existing furnace cover lifting device is not enough, thus causes when the gravity of bell exceedes the maximum hoist capacity of furnace cover lifting device, cisco unity malfunction.
Summary of the invention
Embodiments provide a kind of steel-smelting electric furnace and furnace cover lifting device thereof, for solving the hypodynamic problem of lifting that furnace cover lifting device of the prior art exists.
The furnace cover lifting device of a kind of steel-smelting electric furnace of the embodiment of the present invention, comprising: hoistable platform and at least two hydraulic cylinders; Wherein, one end of described hydraulic cylinder is connected with described hoistable platform, and the other end is connected with the bell be positioned at inside described hoistable platform;
Each oil-in of described hydraulic cylinder is connected with the oil-supplying port of hydraulic oil;
The oil-out of each described hydraulic cylinder is connected with the oil return port of described hydraulic oil.
Preferably, the described oil-supplying port be connected with the oil-in of each described hydraulic cylinder is same port; Or the described oil-supplying port to be connected with the oil-in of each described hydraulic cylinder is different port.
Preferably, the described oil return port be connected with the oil-out of each described hydraulic cylinder is same port; Or the described oil return port to be connected with the oil-out of each described hydraulic cylinder is different port.
Preferably, be connected by chain between described hydraulic cylinder with described bell.
Preferably, the connector by comprising the axis of guide between described hydraulic cylinder with described chain is connected, and the two ends of described chain are fixedly connected with described bell respectively.
Preferably, described hoistable platform is provided with the first sprocket wheel for accepting described chain and second sprocket wheel identical with described first sprocket wheel quantity, and the quantity of wherein said first sprocket wheel is identical with the quantity of described hydraulic cylinder.
Preferably, one end of described chain is connected with the first hanger of described bell; The other end of described chain be vertically arranged in successively described hoistable platform is arranged the first through hole, walk around described first sprocket wheel, walk around the axis of guide of described connector in the horizontal direction after reversely walk around described second sprocket wheel, be vertically arranged in the second through hole that described hoistable platform is arranged after be connected with the second hanger of described bell.
Preferably, connected for making the synchronizing shaft of described first sprocket wheel synchronous axial system by one between adjacent two described first sprocket wheels; Or connected by a described synchronizing shaft between all described first sprocket wheels.
Preferably, connected for making the synchronizing shaft of described second sprocket wheel synchronous axial system by one between adjacent two described second sprocket wheels; Or connected by a described synchronizing shaft between all described second sprocket wheels.
Preferably, described synchronizing shaft is rigid water hammer axle.
Embodiments provide a kind of steel-smelting electric furnace comprising above-mentioned furnace cover lifting device.
The furnace cover lifting device of the steel-smelting electric furnace of the embodiment of the present invention adopts at least two hydraulic cylinder parallel, thus substantially increases the lifting force of furnace cover lifting device.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of the hoistable platform of furnace cover lifting device in background technology;
Fig. 2 is the connection diagram of the furnace cover lifting device in background technology;
Fig. 3 is the operation principle schematic diagram of the hydraulic cylinder of furnace cover lifting device in background technology;
Fig. 4 is the plan structure schematic diagram of the furnace cover lifting device of the embodiment of the present invention;
Fig. 5 be the furnace cover lifting device of the embodiment of the present invention face structural representation;
Fig. 6 is the operation principle schematic diagram of the furnace cover lifting device of the embodiment of the present invention.
Detailed description of the invention
The furnace cover lifting device of the steel-smelting electric furnace of the embodiment of the present invention adopts at least two hydraulic cylinder parallel, the maximum hoist capacity of furnace cover lifting device is made to be at least twice of the maximum hoist capacity of existing furnace cover lifting device, thus the hypodynamic problem of the lifting solving furnace cover lifting device in prior art.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
The furnace cover lifting device of a kind of steel-smelting electric furnace of the embodiment of the present invention, comprising: hoistable platform and at least two hydraulic cylinders; Wherein, one end of hydraulic cylinder is connected with hoistable platform, and the other end is connected with the bell be positioned at inside hoistable platform;
The oil-in of each hydraulic cylinder is connected with the oil-supplying port of hydraulic oil;
The oil-out of each hydraulic cylinder is connected with the oil return port of hydraulic oil.
Wherein, the oil-supplying port be connected with the oil-in of each hydraulic cylinder is same port, after linking together, then is connected with the oil-supplying port of hydraulic oil by the oil-in of all hydraulic cylinders;
Or, the oil-supplying port be connected with the oil-in of each hydraulic cylinder is different port, namely the oil-in of each hydraulic cylinder is connected with an oil-supplying port, but in order to the synchronizing moving of the piston rod that ensures all hydraulic cylinder, each oil-supplying port with the hydraulic oil of the oil-in of hydraulic cylinder must ensure synchronous fuel feeding when fuel feeding, and oil pressure is identical.
Similar, the oil return port be connected with the oil-out of each hydraulic cylinder is same port, after linking together, then is connected with the oil return port of hydraulic oil by the oil-out of all hydraulic cylinders;
Or the oil return port be connected with the oil-out of each hydraulic cylinder is different port, namely the oil-out of each hydraulic cylinder is connected with an oil return port.
The hydraulic cylinder of the embodiment of the present invention is connected by chain with between bell.
Concrete, connector by comprising the axis of guide between hydraulic cylinder with chain is connected, wherein the piston rod bottom of hydraulic cylinder is fixedly connected with one end of connector and (bearing pin, bolt etc. can be adopted to be fixed with connector the bottom of piston rod be connected, but not as limit), the axis of guide of the other end of connector is connected with chain, thus achieves the connection between hydraulic cylinder and chain; The two ends of chain are fixedly connected on the first hanger and second hanger of bell respectively, thus achieve the connection between chain and bell.
The hoistable platform of the embodiment of the present invention is provided with the first sprocket wheel for accepting chain and second sprocket wheel identical with the first sprocket wheel quantity, and wherein the quantity of the first sprocket wheel is identical with the quantity of hydraulic cylinder.
Be described for the connected mode of a chain to chain, one end of this chain is fixedly connected with the first hanger of bell, and wherein the quantity of the first hanger of bell is identical with the quantity of the first sprocket wheel; The other end of this chain be vertically arranged in successively hoistable platform is arranged the first through hole, walk around the first sprocket wheel, walk around the axis of guide of connector in the horizontal direction after reversely walk around the second sprocket wheel, be vertically arranged in the second through hole that hoistable platform is arranged after be fixedly connected with the second hanger of bell, wherein the quantity of the second hanger of bell is identical with the quantity of the second sprocket wheel; The connected mode of the hydraulic cylinder that other chains are corresponding with it and bell is similar, repeats no more herein.
In order to ensure that all chains can synchronizing moving, can by between adjacent two the first sprocket wheels by being used for making the synchronizing shaft of all first sprocket wheel synchronous axial system to connect;
Or, connected between all first sprocket wheels by a synchronizing shaft;
Preferably, synchronizing shaft is rigid water hammer axle.
In order to ensure that all chains can synchronizing moving, can also by between adjacent two the second sprocket wheels by being used for making the synchronizing shaft of all second sprocket wheel synchronous axial system to connect;
Or, connected between all second sprocket wheels by a synchronizing shaft;
Preferably, synchronizing shaft is rigid water hammer axle.
It should be noted that, in order to ensure that all chains can synchronizing moving in the embodiment of the present invention, can only be connected between the first sprocket wheel by rigid water hammer axle, also only can be connected between the second sprocket wheel by rigid water hammer axle, can also all be connected between the first sprocket wheel, between the second sprocket wheel by rigid water hammer axle simultaneously.
Comprise two hydraulic cylinders for furnace cover lifting device below, the furnace cover lifting device of the embodiment of the present invention is described in detail.
As shown in Figure 4, furnace cover lifting device comprises hoistable platform 1, and two hydraulic cylinders 21 and 22;
Hoistable platform 1 is fixedly connected with hydraulic cylinder 21 and 22 respectively by two mount pads 12 that it is arranged, bearing pin, bolt etc. wherein can be adopted between hydraulic cylinder 21 and 22 and mount pad 12 fixing, but not as limit, all connected modes well known to those skilled in the art can be applied to the embodiment of the present invention; The other end of hydraulic cylinder 21 and 22 is connected by connector 4 with chain 31 and 32 respectively;
Hoistable platform 1 is provided with and the first sprocket wheel 51 and the second sprocket wheel 52 for accepting chain 31 and 32; The mobile of piston rod of hydraulic cylinder 21 and 22 drives the equidirectional movement of chain 31 and 32, and the movement of chain 31 and 32 can drive again the rotation of the first sprocket wheel 51 and the second sprocket wheel 52; In order to ensure that chain 31 and 32 can synchronizing moving, synchronizing shaft 7 being installed between two the first sprocket wheels 51 and (also between two the second sprocket wheels 52, synchronizing shaft 7 can being installed; Between two the first sprocket wheels 51, synchronizing shaft 7 can also be installed simultaneously, and between two the second sprocket wheels 52, synchronizing shaft 7 be installed);
Below for a chain, the hydraulic cylinder of the embodiment of the present invention and the connection of bell are described in detail.As shown in Figure 5, hydraulic cylinder 21 one end is fixedly connected with hoistable platform 1 by mount pad 12, and the other end is connected with chain 31 by connector 4; One end of chain 31 is fixedly connected with the first hanger 61 of bell 6, the other end of this chain 31 be vertically arranged in successively hoistable platform 1 is arranged the first through hole 110, walk around the first sprocket wheel 51, walk around the axis of guide of connector 4 in the horizontal direction after reversely walk around the second sprocket wheel 52, be vertically arranged in the second through hole 111 that hoistable platform 1 is arranged after be fixedly connected with the second hanger 62 of bell 6, thus achieve the connection between hydraulic cylinder 21 and bell 6; Chain 32 is similar with the connected mode of hydraulic cylinder 22 and bell 6, repeats no more herein.
Because the level of the piston rod of hydraulic cylinder 21 moves right in Fuel injection system, thus drive moving right of chain 31, by the guide effect of the first sprocket wheel 51 and the second sprocket wheel 52, bell 6 is moved up under chain 31 ground effect, achieves the lifting operation of bell 6;
Because the level of the piston rod of hydraulic cylinder 21 is moved to the left in oil return process, thus drive being moved to the left of chain 31, by the guide effect of the first sprocket wheel 51 and the second sprocket wheel 52, bell 6 is moved down under the effect of chain 31, achieve the reduction operation of bell 6.
It should be noted that, the situation of the situation of three or more hydraulic cylinders and two hydraulic cylinders is similar, refers to connected mode and the operation principle of two hydraulic cylinders, repeats no more herein.
Below for the furnace cover lifting device shown in Fig. 4, the operation principle of the hydraulic cylinder of composition graphs 6 pairs of embodiment of the present invention is carried out.
As shown in Figure 6, hydraulic oil by oil-supplying port P flow through successively for the reversal valve 81 for changing running of hydraulic power oil direction, for prevent hydraulic oil reverse flow check valve 82, for the hydraulic control oil choke valve 83 of flow and ball valve 85, and entered by the oil-in of hydraulic cylinder 21,22 in the cavity of hydraulic cylinder 21,22, realize the fuel feeding operation of hydraulic cylinder; simultaneously
The oil-out of hydraulic cylinder 21,22 connects ball valve 85, overflow valve 84, choke valve 83, check valve 82 and reversal valve 81 for level pressure overflow successively, to oil return port T, realizes the oil return operation of hydraulic oil.
In Fuel injection system, along with the increase of the hydraulic oil in the rod chamber body of hydraulic cylinder 21,22, as shown in Figure 4, promote the piston rod of hydraulic cylinder 21,22 and move right, drive bell 6 to move up by chain 31,32, achieve the lifting operation of bell 6; In oil return process, along with the minimizing of the hydraulic oil in the rod chamber body of hydraulic cylinder 21,22, the piston rod of hydraulic cylinder 21,22 is moved to the left, by chain 31,32 thus drive bell 6 move down, achieve the step-down operation of bell 6.
As can be seen from Figure 6, owing to adopting being connected in parallel of two hydraulic cylinders 21 and hydraulic cylinder 22 in the embodiment of the present invention, the maximum hoist capacity of furnace cover lifting device is made to be the product of the sectional area of the piston of two hydraulic cylinders and the oil pressure of hydraulic oil, compared to the furnace cover lifting device of the hydraulic cylinder composition of three series connection in background technology, the maximum hoist capacity of the furnace cover lifting device of the embodiment of the present invention is doubled, and is namely the twice of the maximum hoist capacity of furnace cover lifting device in background technology; According to being connected in parallel of three hydraulic cylinders 21 and hydraulic cylinder 22, then lifting force is three times of the maximum hoist capacity of furnace cover lifting device in background technology, and the rest may be inferred.
Embodiments provide a kind of steel-smelting electric furnace, comprise above-mentioned furnace cover lifting device.
Preferably, the steel-smelting electric furnace of the embodiment of the present invention is ladle furnace.
Preferably, the steel-smelting electric furnace of the embodiment of the present invention also comprises rotating mechanism, and this rotating mechanism is connected with the furnace cover lifting device of steel-smelting electric furnace, with furnace cover lifting device with the use of, for the compound motion of the movement and rotation that realize bell.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
The furnace cover lifting device of the steel-smelting electric furnace of the embodiment of the present invention adopts at least two hydraulic cylinder parallel, thus substantially increase the maximum hoist capacity of furnace cover lifting device, because hydraulic cylinder adopts parallel operation, add lifting surface area, therefore can reduce the operating pressure of hydraulic system; Connecting the first sprocket wheel (and/or second sprocket wheel) for accepting chain by rigid water hammer axle, ensure that the synchronism of all chain lifting bells.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a furnace cover lifting device for steel-smelting electric furnace, is characterized in that, described furnace cover lifting device comprises hoistable platform and at least two hydraulic cylinders; Wherein,
One end of described hydraulic cylinder is connected with described hoistable platform, and the other end is connected with the bell be positioned at inside described hoistable platform;
Each oil-in of described hydraulic cylinder is connected with the oil-supplying port of hydraulic oil;
The described oil-supplying port that the oil-in of each described hydraulic cylinder connects is same port; Or the described oil-supplying port to be connected with the oil-in of each described hydraulic cylinder is different port;
The oil-out of each described hydraulic cylinder is connected with the oil return port of described hydraulic oil;
The described oil return port be connected with the oil-out of each described hydraulic cylinder is same port; Or the described oil return port to be connected with the oil-out of each described hydraulic cylinder is different port;
Wherein, be connected by chain between described hydraulic cylinder with described bell;
Connector by comprising the axis of guide between described hydraulic cylinder with described chain is connected, and the two ends of described chain are fixedly connected with described bell respectively;
Wherein, described hoistable platform is provided with the first sprocket wheel for accepting described chain and second sprocket wheel identical with described first sprocket wheel quantity, and the quantity of wherein said first sprocket wheel is identical with the quantity of described hydraulic cylinder.
2. furnace cover lifting device as claimed in claim 1, it is characterized in that, one end of described chain is connected with the first hanger of described bell; The other end of described chain be vertically arranged in successively described hoistable platform is arranged the first through hole, walk around described first sprocket wheel, walk around the axis of guide of described connector in the horizontal direction after reversely walk around described second sprocket wheel, be vertically arranged in the second through hole that described hoistable platform is arranged after be connected with the second hanger of described bell.
3. furnace cover lifting device as claimed in claim 2, being is characterized in that, being connected between adjacent two described first sprocket wheels by one for making the synchronizing shaft of described first sprocket wheel synchronous axial system; Or connected by a described synchronizing shaft between all described first sprocket wheels.
4. the furnace cover lifting device as described in claim 1 or 3, is characterized in that, is connected between adjacent two described second sprocket wheels by one for making the synchronizing shaft of described second sprocket wheel synchronous axial system; Or connected by a described synchronizing shaft between all described second sprocket wheels.
5. furnace cover lifting device as claimed in claim 4, it is characterized in that, described synchronizing shaft is rigid water hammer axle.
6. a steel-smelting electric furnace, is characterized in that, described steel-smelting electric furnace comprise as arbitrary in Claims 1 to 5 as described in furnace cover lifting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110448254.6A CN103185458B (en) | 2011-12-28 | 2011-12-28 | A kind of steel-smelting electric furnace and furnace cover lifting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110448254.6A CN103185458B (en) | 2011-12-28 | 2011-12-28 | A kind of steel-smelting electric furnace and furnace cover lifting device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103185458A CN103185458A (en) | 2013-07-03 |
| CN103185458B true CN103185458B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110448254.6A Expired - Fee Related CN103185458B (en) | 2011-12-28 | 2011-12-28 | A kind of steel-smelting electric furnace and furnace cover lifting device thereof |
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| Country | Link |
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| CN (1) | CN103185458B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002275553A (en) * | 2001-03-13 | 2002-09-25 | Mitsui Mining & Smelting Co Ltd | Method for heat-insulating converter, and converter lid device |
| CN201277811Y (en) * | 2008-10-13 | 2009-07-22 | 河北津西钢铁股份有限公司 | Door hydraulic transmission apparatus for heating stove |
| CN201463580U (en) * | 2009-08-19 | 2010-05-12 | 中冶赛迪工程技术股份有限公司 | Lifting device |
| CN201535628U (en) * | 2009-11-06 | 2010-07-28 | 苏州新长光热能科技有限公司 | Furnace door lifting device |
-
2011
- 2011-12-28 CN CN201110448254.6A patent/CN103185458B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002275553A (en) * | 2001-03-13 | 2002-09-25 | Mitsui Mining & Smelting Co Ltd | Method for heat-insulating converter, and converter lid device |
| CN201277811Y (en) * | 2008-10-13 | 2009-07-22 | 河北津西钢铁股份有限公司 | Door hydraulic transmission apparatus for heating stove |
| CN201463580U (en) * | 2009-08-19 | 2010-05-12 | 中冶赛迪工程技术股份有限公司 | Lifting device |
| CN201535628U (en) * | 2009-11-06 | 2010-07-28 | 苏州新长光热能科技有限公司 | Furnace door lifting device |
Non-Patent Citations (1)
| Title |
|---|
| 《VOD真空炉盖升降液压调速同步回路的改进》;张春生;《安装》;20100615;第21-23页、第30页 * |
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| Publication number | Publication date |
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| CN103185458A (en) | 2013-07-03 |
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