CN220224213U - Converter activity petticoat pipe hoisting device - Google Patents

Abstract

The utility model relates to a converter activity petticoat pipe hoisting device relates to metallurgical steelmaking equipment technical field, which comprises a platform, be provided with synchro mechanism on the platform, synchro mechanism includes the synchronizing shaft, two bearing frames, two promotion sprocket and two promotion chains, two bearing frames are all connected on the platform, the both ends of synchronizing shaft rotate respectively and connect at two bearing frames, and the tip of synchronizing shaft is provided with drive mechanism, two promotion sprocket overlaps respectively and establish the both ends at the synchronizing shaft, the one end fixed connection of promotion chain is on promotion sprocket, the promotion chain other end is provided with elevating system, be provided with accident handling mechanism on the platform, accident handling mechanism includes the chain block, accident sprocket, accident chain and U type shackle, accident sprocket cover is established on the synchronizing shaft, accident chain's one end fixed connection accident sprocket is last, accident chain's the other end is connected with U type shackle, the chain block sets up on the platform, the lifting hook of chain block is connected in U type shackle. The application has the effect of improving the stability of the device.

Description

Converter activity petticoat pipe hoisting device

Technical Field

The application relates to the technical field of metallurgical steelmaking equipment, in particular to a movable smoke hood lifting device of a converter.

Background

The converter system is core equipment of a steelmaking process, a large amount of smoke dust is generated in the smelting process, the lifting of a movable smoke hood is needed, the atmospheric pressure inside and outside the smoke hood is approximately equal, high-temperature dust and gas in the furnace are prevented from overflowing, air is not sucked to reduce the quality of recovered gas, therefore, the smoke hood can be adjusted to a required gap in each stage of blowing, and the smoke hood can be lifted when tapping, deslagging, scrap adding and molten iron adding are finished in the blowing, so that tilting of the converter is not hindered.

At present, the existing movable fume hood lifting device of the converter is driven by electricity, the fume hood is lifted by an electric winch, the self weight of the fume hood is utilized to descend, and because the surrounding environment of the movable fume hood of the converter is severe, the temperature is high, the ash deposition of electric facilities is easy to occur, and the circuit is easy to age in the high-temperature environment; the hydraulic driving is adopted, 4 hydraulic cylinders are arranged below the movable hood, the lifting of the 4 hydraulic cylinders is controlled, the lifting of the movable hood is realized, and due to the fact that the surrounding environment of the movable hood of the converter is severe, the hydraulic cylinders are located in the hood movable area, the sealing rings of the hydraulic cylinders are easy to age, deteriorate and lose efficacy, the hydraulic cylinders can leak inwards, leak oil and the like, and the 4 hydraulic cylinders can also have lifting asynchronous faults, so that the movable hood is severely inclined.

In the prior art, the lifting stability of a common movable hood lifting device of a converter is poor, and faults possibly occur in the lifting process of the movable hood, so that the converter cannot be produced normally, the operation rate of the converter is influenced, and even the furnace shutdown accident is caused, so that the lifting stability of the movable hood lifting device of the converter is to be improved.

Disclosure of Invention

In order to solve the problem that the normal production of a converter is affected by faults of the lifting device, the application provides a movable smoke hood lifting device of the converter.

The application provides a converter activity petticoat pipe hoisting device adopts following technical scheme:

the utility model provides a converter activity petticoat pipe hoisting device, includes the platform, be provided with synchro-mechanism on the platform, synchro-mechanism includes synchronizing shaft, two bearing frames, two promotion sprocket and two promotion chains, two the bearing frames are all connected on the platform, the both ends of synchronizing shaft rotate respectively and connect at two bearing frames, just the tip of synchronizing shaft is provided with drive mechanism, two the both ends at the synchronizing shaft are established to the promotion sprocket cover respectively, two it is corresponding with the promotion sprocket to promote the chain, the one end fixed connection of promotion chain is on corresponding promotion sprocket, the other end of promotion chain is provided with the elevating system who is used for promoting activity petticoat pipe, be provided with accident handling mechanism on the platform, accident handling mechanism includes chain block, accident sprocket, accident chain and U type shackle, accident sprocket cover is established on the synchronizing shaft, the one end fixed connection accident sprocket of chain is last, the other end and the U type shackle of unloading the chain are connected, the chain block sets up in the platform, the lifting hook of chain block is connected in U type shackle.

The common movable hood lifting device of the converter has poor lifting stability, and can possibly fail in the lifting process of the movable hood, so that the converter cannot be normally produced, the operation rate of the converter is influenced, and even a furnace shutdown accident is caused; by adopting the technical scheme, the accident handling mechanism consists of a chain block, an accident chain wheel, an accident chain and a U-shaped shackle; when the movable smoke hood normally lifts, the transmission mechanism drives the synchronous shaft to rotate, the two lifting chain wheels rotate along with the synchronous shaft and pull the corresponding lifting chains, the lifting mechanisms on the two lifting chains lift the movable smoke hood, when the transmission mechanism fails, operators continuously pull the accident chain by using the chain block, the accident chain wheels drive the synchronous shaft to rotate, the lifting chain wheels rotate along with the synchronous shaft, and the lifting chains lift the movable smoke hood again through the lifting mechanisms; through the setting of chain block, accident sprocket, accident chain and U type shackle, stability when having helped improving the device and gone up and down has stabilized the normal production of converter, guarantees equipment operating rate and throughput, reduces the possibility that the movable petticoat pipe breaks down and influences the normal production of converter, and the synchronism is good when this device goes up and down, effectively reduces the asynchronous problem of movable petticoat pipe lift, further improves the stability of lifting operation.

Optionally, the drive mechanism includes hydro-cylinder, hydro-cylinder seat, round pin axle, promotes connecting plate, drive chain, drive sprocket, a plurality of guide pulley and direction bottom plate, the hydro-cylinder seat sets up on the platform, the hydro-cylinder is connected on the hydro-cylinder seat, the output of hydro-cylinder is connected with the round pin axle, the round pin axle links to each other with promoting the connecting plate, be provided with the direction frid on the direction bottom plate, a plurality of the guide pulley slides and sets up in the direction frid, and a plurality of the guide pulley rotates to be connected on promoting the connecting plate, one side that the guide pulley was kept away from to the drive connecting plate is connected on drive chain, drive chain's one end fixed connection is on drive sprocket, drive sprocket cover is established on the synchronizing shaft.

By adopting the technical scheme, the transmission mechanism consists of an oil cylinder, an oil cylinder seat, a pin roll, a pushing connecting plate, a transmission chain wheel, a plurality of guide wheels and a guide bottom plate; when the movable smoke hood is lifted, the oil cylinder works, the oil cylinder drives the pushing connecting plate to move through the pin shaft, the guide wheel slides in the guide groove plate at the moment, the transmission chain moves along with the moving position of the pushing connecting plate, the transmission chain wheel drives the synchronous shaft to rotate, the lifting chain wheel rotates synchronously, and the lifting chain pulls the movable smoke hood to be lifted by the lifting device; the oil cylinder, the oil cylinder seat, the pin shaft, the pushing connecting plate, the transmission chain wheel, the guide wheels and the guide bottom plate are arranged, so that the rotation of the synchronous shaft is driven, the transmission is stable, and the lifting stability of the movable smoke hood is ensured.

Optionally, a dust cover for dust prevention is arranged on one side of the oil cylinder, which faces the movable smoke cover.

By adopting the technical scheme, the dust cover is arranged on one side of the oil cylinder, which is close to the movable smoke cover; through the setting of dust cover, effectively reduce the influence of smoke and dust to the hydro-cylinder, guaranteed not fragile of hydro-cylinder, prolonged the life of hydro-cylinder.

Optionally, a plurality of stop blocks are respectively arranged on two sides of the guide bottom plate along the length direction.

By adopting the technical scheme, the stop blocks are welded and fixed on the two sides of the guide plate in the length direction; the arrangement of the stop blocks is beneficial to reducing the possibility that the guide wheel is separated from the guide plate, further limiting the position of the guide wheel and improving the stability of the guide wheel sliding in the guide groove plate.

Optionally, a displacement sensor is arranged on the pushing connecting plate, and two proximity switches for corresponding to the high and low positions of the guide wheel travel are arranged on the guide bottom plate along the length direction.

By adopting the technical scheme, the displacement sensor is arranged on the pushing connecting plate, and the proximity switch is arranged on the guide bottom plate; through displacement sensor and proximity switch's setting, help realizing accurate control activity petticoat pipe lift distance, the installation adjustment is convenient, and the condition requirement to service environment is lower, uses under the more occasion of dust has better stability, has advantages such as transmission distance is long, corrosion-resistant, sensitivity height.

Optionally, the elevating system is two sets of, two sets of elevating system sets up respectively in two on the lifting chain, every elevating system all includes even board, two regulation pole and two short-ring chain, even the one end of board is connected on corresponding lifting chain, two it all connects on even board to adjust the pole, two adjust the pole with two the short-ring chain is corresponding, the short-ring chain is connected in the one end of linking the board, the tip of short-ring chain is provided with wire rope, wire rope connects on movable smoke cover.

By adopting the technical scheme, the lifting mechanism consists of a connecting plate, two adjusting rods and two short ring chains; through setting up of link plate, two regulation poles and two short ring chains, two sets of elevating system realize the common lift to movable petticoat pipe front side and rear side, guarantee movable petticoat pipe stability of going up and down.

Optionally, be provided with a plurality of direction subassemblies on the platform, a plurality of direction subassembly is corresponding with a plurality of wire rope, every direction subassembly all includes guide sprocket, self-lubricating bearing, sprocket shaft and sprocket seat, the sprocket seat sets up on the platform, the sprocket shaft is connected on the sprocket seat, self-lubricating bearing sets up in guide sprocket, the snare is established on the sprocket shaft in the self-lubricating bearing, wire rope winds to establish on guide sprocket.

By adopting the technical scheme, the guide assembly consists of a guide chain wheel, a self-lubricating bearing, a chain wheel shaft and a chain wheel seat; the arrangement of the guide chain wheel, the self-lubricating bearing, the chain wheel shaft and the chain wheel seat is beneficial to changing the acting force direction when the movable smoke hood is lifted, and the lifting stability of the movable smoke hood is ensured.

Optionally, the one end that wire rope is close to movable petticoat pipe is provided with the screw rod, the tip screw thread of screw rod is provided with the regulation pull rod, the one end that the regulation pull rod kept away from the screw rod is provided with the joint that is used for fixed with movable petticoat pipe.

By adopting the technical scheme, the adjusting pull rod is in threaded connection with the end part of the screw rod, the connector is arranged at one end of the adjusting pull rod, and the connector is fixed with the movable smoke hood through the bolt; through the screw rod, adjust the setting of pull rod and joint, adopt the mode of screw thread rotation regulation, have the advantage that the regulation degree of accuracy is good, accurate height and regulation are convenient to adjust the levelness of petticoat pipe through the regulation pole of horizontal installation and the regulation pull rod of perpendicular installation, adjust the precision height, the error is little.

Optionally, the outside safety cover that still is provided with of screw rod, the inside refractory clay that fills of safety cover.

Because the screw is close to the converter, the environment is severe and the temperature is high; by adopting the technical scheme, the screw is externally provided with the protective cover; through the setting of safety cover, help realizing the protection to screw rod part, reduce the influence of external high temperature to screw rod part, reduce screw rod, adjust the possibility that damage appears because of the high temperature such as pull rod, improve life.

In summary, the present application includes at least one of the following beneficial technical effects:

the arrangement of the chain block, the accident chain wheel, the accident chain and the U-shaped shackle is beneficial to improving the stability of the device during lifting, stabilizing the normal production of the converter, ensuring the operation rate and the production capacity of equipment, reducing the possibility that the normal production of the converter is affected by the failure of the movable smoke hood, and having good synchronism during lifting, effectively reducing the problem of asynchronous lifting of the movable smoke hood, and further improving the stability of lifting operation;

by the arrangement of the dust cover, the influence of smoke dust on the oil cylinder is effectively reduced, the oil cylinder is not easy to damage, and the service life of the oil cylinder is prolonged;

through the screw rod, adjust the setting of pull rod and joint, adopt the mode of screw thread rotation regulation, have the advantage that the regulation degree of accuracy is good, accurate height and regulation are convenient to adjust the levelness of petticoat pipe through the regulation pole of horizontal installation and the regulation pull rod of perpendicular installation, adjust the precision height, the error is little.

Drawings

Fig. 1 is a front view of a converter mobile hood lifting device according to an embodiment of the present application.

Fig. 2 is a top view of a converter mobile hood lifting device in accordance with an embodiment of the present application.

Fig. 3 is a schematic structural diagram for embodying a synchronizing mechanism in an embodiment of the present application.

Fig. 4 is a cross-sectional view taken along A-A in fig. 3.

Fig. 5 is a front view of the embodiment of the present application for embodying a transmission mechanism.

Fig. 6 is a cross-sectional view of an embodiment of the present application for embodying a transmission.

Fig. 7 is a B-B cross-sectional view of fig. 5.

Fig. 8 is a schematic structural view for embodying the lifting mechanism in the embodiment of the present application.

Fig. 9 is a cross-sectional view of an internal structure of a guide assembly used in an embodiment of the present application.

Fig. 10 is a schematic structural view of an accident handling mechanism according to an embodiment of the present application.

Reference numerals illustrate: 1. a platform; 2. a synchronizing mechanism; 201. a synchronizing shaft, 202, bearing seat; 203. lifting a chain wheel; 204. lifting the chain; 205. a bearing bottom plate; 206. a limiting pin; 207. a second baffle; 3. an accident handling mechanism; 301. chain block; 302. an accident sprocket; 303. an accident chain; 304. u-shaped shackle; 4. a transmission mechanism; 401. an oil cylinder; 402. an oil cylinder seat; 403. a pin shaft; 404. pushing the connecting plate; 405. a drive chain; 406. a drive sprocket; 407. a guide wheel; 408. a guide bottom plate; 409. a guide groove plate; 410. a cylinder bottom plate; 411. a first baffle; 412. a stopper; 413. a displacement sensor; 414. a proximity switch; 5. a dust cover; 6. a lifting mechanism; 601. a connecting plate; 602. an adjusting rod; 603. a short loop chain; 604. a wire rope; 7. a guide assembly; 701. a guide sprocket; 702. self-lubricating bearings; 703. chain wheel shaft; 704. chain wheel seat; 705. a clamping plate; 706. a screw; 707. adjusting the pull rod; 708. a joint; 709. a protective cover; 8. a movable smoke cover.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-10.

The embodiment of the application discloses a converter movable hood lifting device. Referring to fig. 1 and 3, the converter movable hood lifting device comprises a platform 1, a synchronization mechanism 2 is mounted on the platform 1, the synchronization mechanism 2 comprises a synchronization shaft 201, two bearing seats 202, two lifting chain wheels 203 and two lifting chains 204, the two bearing seats 202 are relatively arranged on the platform 1, a bearing bottom plate 205 is fixed at the bottom of each bearing seat 202 through bolts, the bearing bottom plate 205 is welded and fixed on the platform 1, two ends of the synchronization shaft 201 are respectively connected to the two bearing seats 202 in a rotating manner, the two lifting chain wheels 203 are respectively sleeved and fixed on the two synchronization shafts 201, the two lifting chain wheels 203 are respectively arranged on two sides of the length direction of the synchronization shaft 201, the two lifting chain wheels 203 correspond to the two lifting chains 204, one end of each lifting chain 204 is fixed on the lifting chain wheel 203 through bolts, the other end of each lifting chain 204 is provided with a lifting mechanism 6, the lifting mechanism 6 is mounted on the movable hood 8, and in the embodiment, the lifting mechanism 6 is respectively controlled to lift the front side and the rear side of the movable hood 8.

Referring to fig. 3 and 4, in the present embodiment, the bearing seat 202 is provided with a limiting pin 206, and the lifting sprocket 203 is provided with a second baffle 207, so that the possibility of excessive rotation of the lifting sprocket 203 is reduced by the collision of the second baffle 207 with the limiting pin 206.

Referring to fig. 2 and 5, a transmission mechanism 4 is installed at the end of the synchronizing shaft 201, the transmission mechanism 4 comprises an oil cylinder 401, an oil cylinder seat 402, a pin shaft 403, a pushing connection plate 404, a transmission chain 405, a transmission chain wheel 406, a plurality of guide wheels 407 and a guide bottom plate 408, an oil cylinder bottom plate 410 is fixed at the bottom of the oil cylinder seat 402 through bolts, the oil cylinder bottom plate 410 is welded and fixed on a platform 1, the oil cylinder 401 is installed and fixed on the oil cylinder seat 402, rated pressure 21MPa of the oil cylinder 401 in the embodiment, working pressure 16MPa and travel 750mm are achieved, and a dust cover 5 is installed at one side of the oil cylinder 401, which is close to the movable smoke hood 8, so that influence of smoke dust on the oil cylinder 401 is reduced, the oil cylinder 401 is not easy to damage, and the service life of the oil cylinder 401 is prolonged.

Referring to fig. 5 and 6, a pin shaft 403 is fixedly installed at the output end of an oil cylinder 401, one end of the pin shaft 403 away from the oil cylinder 401 is fixedly connected with a push connection plate 404, a first baffle 411 is installed on the pin shaft 403, the first baffle 411 is used for fixing the pin shaft 403 and the push connection plate 404, a guide bottom plate 408 is welded and fixed on a platform 1, in this embodiment, the oil cylinder bottom plate 410 and the guide bottom plate 408 are all made of Q235B steel plates with the thickness of 45mm, a guide groove plate 409 is fixed on the guide bottom plate 408 through bolts, a notch is formed in the upper surface of the guide groove plate 409, a plurality of guide wheels 407 are all slidingly connected in the guide groove plate 409, the number of the guide wheels 407 is four, the guide wheels 407 move along the horizontal direction of the guide groove plate 409, a plurality of guide wheels 407 are installed on the push connection plate 404 through guide wheel shafts, one end of the push connection plate 404 and a transmission chain 405 is fixedly connected through bolts, and the other end of the transmission chain 405 is fixedly connected with the transmission chain 406 through bolts, and the transmission chain 406 is fixedly sleeved on the synchronization shaft 201.

Referring to fig. 6 and 7, two sides of the guide bottom plate 408 along the length direction are welded and fixed with stop blocks 412, in this embodiment, the number of stop blocks 412 is four, the size of each stop block 412 is 70×30×30, two proximity switches 414 are installed on the guide groove plate 409, the installation positions of the two proximity switches 414 correspondingly form a high position and a low position, a displacement sensor 413 is installed on the pushing connecting plate 404, the measuring range of the displacement sensor 413 is 800mm, so that the lifting distance of the movable hood 8 is accurately controlled, the installation and adjustment are convenient, the requirement on the condition of the use environment is lower, the use has better stability under the condition of more dust, and the advantages of long transmission distance, corrosion resistance, high sensitivity and the like are achieved.

Referring to fig. 8, the lifting mechanism 6 includes a connecting plate 601, two adjusting rods 602 and two short-ring chains 603, the connecting plate 601 is fixedly connected with the corresponding lifting chains 204 through bolts, the two adjusting rods 602 are respectively fixed on the connecting plate 601 through bolts, the two short-ring chains 603 correspond to the two adjusting rods 602, in this embodiment, the short-ring chains 603 are made of high-temperature materials, the limiting working load is 25t when the temperature is 400 ℃ or higher, one end of the short-ring chains 603 is fixed on the adjusting rods 602 through bolts, and the other end of the short-ring chains 603 is provided with a steel wire rope 604.

Referring to fig. 8 and 9, a plurality of guide assemblies 7 are installed on the platform 1, four guide assemblies 7 are provided in this embodiment, a plurality of guide assemblies 7 correspond to a plurality of steel wires 604, each guide assembly 7 includes a guide sprocket 701, a self-lubricating bearing 702, a sprocket shaft 703 and a sprocket seat 704, the sprocket seat 704 is installed and fixed on the platform 1, the sprocket shaft 703 is connected on the sprocket seat 704, the outer ring of the self-lubricating bearing 702 is installed inside the guide sprocket 701, the inner ring of the self-lubricating bearing 702 is sheathed and fixed on the sprocket shaft 703, and the steel wires 604 are wound on the guide sprocket 701, and a clamping plate 705 for fixing the sprocket shaft 703 is also installed on the sprocket seat 704 in this embodiment for changing the acting force direction when the movable hood 8 is lifted, and the movement direction of the steel wires 604 is converted from horizontal to vertical.

Referring to fig. 8, one end of the steel wire rope 604, which is close to the movable hood 8, is fixedly provided with a screw 706, an end portion of the screw 706 is in threaded connection with an adjusting pull rod 707, one end of the adjusting pull rod 707, which is far away from the screw 706, is fixedly provided with a joint 708 through a bolt, the joint 708 is fixed on the movable hood 8 through a bolt, and in this embodiment, the adjusting rod 602 and the adjusting pull rod 707 adjust the levelness of the movable hood 8, so that the level difference of four hanging points is not more than 5mm.

Referring to fig. 8, a protective cover 709 is installed on the outer wall of the screw 706, and refractory clay is filled in the protective cover 709 to protect the screw 706, reduce the influence of external high temperature on the screw 706, reduce the possibility of damage to the screw 706, the adjusting pull rod 707 and the like due to high temperature, and prolong the service life.

Referring to fig. 10, an accident handling mechanism 3 is installed on a platform 1, the accident handling mechanism 3 comprises a chain block 301, an accident chain wheel 302, an accident chain 303 and a U-shaped shackle 304, the chain block 301 is installed and fixed on the platform 1, a lifting hook of the chain block 301 is hung in the U-shaped shackle 304, the U-shaped shackle 304 is connected with the accident chain 303 through bolts, one end of the accident chain 303, far away from the U-shaped shackle 304, is connected with the accident chain wheel 302 through bolts, the accident chain wheel 302 is sleeved and fixed on a synchronous shaft 201, in the embodiment, the length of the accident chain 303 is long, the movable hood 8 is ensured not to pull the chain block 301 in a normal travel range, stability in lifting of the device is improved, normal production of a converter is stabilized, and equipment operation rate and production capacity are ensured.

The implementation principle of the movable smoke hood lifting device of the converter is as follows: when the oil cylinder 401 breaks down, an operator continuously pulls the accident chain 303 by using the chain block 301, the accident chain wheel 302 drives the synchronous shaft 201 to rotate, the lifting chain wheel 203 rotates synchronously, the lifting chain 204 pulls the steel wire rope 604, and the steel wire rope 604 lifts the movable hood 8 after changing the movement direction by the guiding chain wheel 701; through the setting of chain block 301, accident sprocket 302, accident chain 303 and U type shackle 304, stability when helping improving the device and going up and down has stabilized the normal production of converter, guarantees equipment operating rate and throughput, reduces movable petticoat pipe 8 and breaks down the possibility that influences the normal production of converter, and the synchronism is good when this device goes up and down, effectively reduces movable petticoat pipe 8 and goes up and down asynchronous problem, further improves the stability of lifting operation.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. The utility model provides a converter activity petticoat pipe hoisting device which characterized in that: comprises a platform (1), a synchronizing mechanism (2) is arranged on the platform (1), the synchronizing mechanism (2) comprises a synchronizing shaft (201), two bearing seats (202), two lifting chain wheels (203) and two lifting chains (204), the two bearing seats (202) are connected to the platform (1), two ends of the synchronizing shaft (201) are respectively connected to the two bearing seats (202) in a rotating mode, a transmission mechanism (4) is arranged at the end of the synchronizing shaft (201), the two lifting chain wheels (203) are respectively sleeved at two ends of the synchronizing shaft (201), the two lifting chain wheels (204) correspond to the two lifting chain wheels (203), one end of each lifting chain (204) is fixedly connected to the corresponding lifting chain wheel (203), the other end of each lifting chain (204) is provided with a lifting mechanism (6) for lifting a movable smoke hood (8), an accident handling mechanism (3) is arranged on the platform (1), the accident handling mechanism (3) comprises a chain block (301), an accident chain (302), an accident shackle (303) and a U-shaped buckle (302) are sleeved at one end of the chain wheel (302) which is fixedly connected to the accident chain (302), the other end of the accident chain (303) is connected with a U-shaped shackle (304), the chain block (301) is arranged on the platform (1), and the lifting hook of the chain block (301) is connected in the U-shaped shackle (304).

2. A converter mobile hood lifting device according to claim 1, characterized in that: the transmission mechanism (4) comprises an oil cylinder (401), an oil cylinder seat (402), a pin shaft (403), a pushing connecting plate (404), a transmission chain (405), a transmission chain wheel (406), a plurality of guide wheels (407) and a guide bottom plate (408), wherein the oil cylinder seat (402) is arranged on a platform (1), the oil cylinder (401) is connected on the oil cylinder seat (402), the output end of the oil cylinder (401) is connected with the pin shaft (403), the pin shaft (403) is connected with the pushing connecting plate (404), the guide bottom plate (408) is provided with a guide groove plate (409), a plurality of guide wheels (407) are slidably arranged in the guide groove plate (409), and a plurality of guide wheels (407) are rotatably connected on the pushing connecting plate (404), one side, far away from the guide wheels (407), of the pushing connecting plate (404) is connected on the transmission chain (405), one end of the transmission chain (405) is fixedly connected on the transmission chain wheel (406), and the transmission chain wheel (406) is sleeved on the synchronous shaft (201).

3. A converter mobile hood lifting device according to claim 2, characterized in that: one side of the oil cylinder (401) facing the movable smoke cover (8) is provided with a dustproof cover (5) for dust prevention.

4. A converter mobile hood lifting device according to claim 2, characterized in that: the two sides of the guide bottom plate (408) along the length direction are respectively provided with a plurality of stop blocks (412).

5. A converter mobile hood lifting device according to claim 2, characterized in that: the push connecting plate (404) is provided with a displacement sensor (413), and the guide bottom plate (408) is provided with two proximity switches (414) corresponding to the high and low positions of the travel of the guide wheel (407) along the length direction.

6. A converter mobile hood lifting device according to claim 1, characterized in that: lifting mechanism (6) are two sets of, two sets of lifting mechanism (6) set up respectively in two on lifting chain (204), every lifting mechanism (6) all include link board (601), two regulation pole (602) and two short ring chain (603), link board (601) one end is connected on corresponding lifting chain (204), two regulation pole (602) are all connected on link board (601), two regulation pole (602) with two short ring chain (603) are corresponding, short ring chain (603) are connected in the one end of link board (601), the tip of short ring chain (603) is provided with wire rope (604), wire rope (604) are connected on movable hood (8).

7. A converter mobile hood lifting device according to claim 1, characterized in that: be provided with a plurality of direction subassemblies (7) on platform (1), a plurality of direction subassemblies (7) are corresponding with a plurality of wire rope (604), each direction subassembly (7) all include guide sprocket (701), self-lubricating bearing (702), sprocket shaft (703) and sprocket seat (704), sprocket seat (704) set up on platform (1), sprocket shaft (703) are connected on sprocket seat (704), self-lubricating bearing (702) set up in guide sprocket (701), the snare is established on sprocket shaft (703) in self-lubricating bearing (702), wire rope (604) are around establishing on guide sprocket (701).

8. A converter mobile hood lifting device according to claim 7, wherein: one end of the steel wire rope (604) close to the movable smoke cover (8) is provided with a screw rod (706), an end thread of the screw rod (706) is provided with an adjusting pull rod (707), and one end of the adjusting pull rod (707) far away from the screw rod (706) is provided with a connector (708) used for being fixed with the movable smoke cover (8).

9. A converter mobile hood lifting device according to claim 8, wherein: the outside of screw rod (706) still is provided with safety cover (709), the inside refractory clay that fills of safety cover (709).