CN217148440U - Automatic lifting device for brick feeding of molten steel tank - Google Patents

Abstract

The utility model provides a ladle advances brick automatic lifting device. The refractory brick lifting device comprises a lifting frame, a lifting basket, a lifting mechanism, a brick discharging roller way and a brick discharging pushing mechanism, wherein the lifting mechanism comprises a lifting motor, a plurality of lifting pulleys and a lifting steel wire rope, and the lifting pulleys and the lifting steel wire rope are installed on the lifting frame; the brick discharging roller way is arranged at the mouth of the molten steel tank, the height of the brick discharging roller way is lower than the bottom surface height of the lifting basket when the lifting basket is lifted to the highest position, one end of the brick discharging roller way extends to the position below the outlet of the lifting basket lifted to the highest position, and the other end of the brick discharging roller way extends to the molten steel tank; go out brick push mechanism and include brick push cylinder and brick push rod, go out the execution portion of brick push rod and promote the basket position phase-match that promotes to the highest position, promote the basket and promote when the highest position. The utility model discloses it is small, the transportation can incessantly go on, can practice thrift the running cost in a large number, and furthest reduces the safety risk, and can guarantee that the operation is smooth and easy to observe the material transportation situation.

Description

Automatic lifting device for brick feeding of molten steel tank

Technical Field

The utility model relates to a maintenance auxiliary device of ladle, especially a ladle advances brick automatic lifting device.

Background

The molten steel tank is also called as a steel ladle, a steel ladle and a steel containing barrel, and is important production equipment for transferring molten steel in the casting process of steelmaking continuous casting production. Since the refractory lining material of the ladle is easily corroded due to long-term contact with high-temperature molten steel, and is a main determining factor of the service life of the ladle, the ladle needs to be replaced and overhauled according to the service condition of the ladle. Because the ladle is barrel-shaped, the height is generally 4 ~ 6 meters, therefore the firebrick that the maintenance work progress used must transport at first in the ladle just can build by laying bricks or stones and install. At present, the construction of the inner lining refractory material of a domestic molten steel tank generally adopts an operation mode of hoisting the refractory material into the tank by a hoisting machine, and a platform is not erected during the operation of the tank bottom by combining different parts; when the tank wall works, a platform is built in the tank after the tank wall reaches a certain height, and personnel carry out construction operation on the platform.

The existing brick hanging mode has high efficiency, but has the following defects: firstly, when materials and platforms are hoisted in the tank, personnel need to avoid, the operation efficiency is influenced, and potential safety hazards exist; secondly, when the materials are stacked on the platform, at least two materials of a pointed brick type and a square brick type are required, the slurry for building required by wet building also needs to be placed on the platform, the materials occupy most of the space on the platform on a brick tray, the space left for operators is not large, the space is crowded, and the operation action is influenced; thirdly, the number of participants is large, and the labor intensity of the physical power is large; and fourthly, under the condition that hoisting facilities such as an overhead travelling crane are insufficient, brick hoisting into the tank is often limited. Aiming at the characteristics of the existing construction operation, particularly under the conditions of large masonry labor and large workload at present, mechanical and automatic brick laying facilities need to be researched urgently so as to reduce the labor intensity of operators and the number of the operators, thereby reducing the labor cost.

Disclosure of Invention

The utility model provides an automatic lifting device for molten steel tank brick feeding in order to improve efficiency and reduce labor cost; the lifting device changes the feeding mode of the existing molten steel tank, adopts an automatic identification guide operation system, and conveys bricks into the tank one by one from the ground outside the molten steel tank through lifting and horizontal conveying, thereby achieving the purpose that the quantity of the stored bricks in the tank is small and the bricks can be used at any time.

In order to achieve the technical purpose, the utility model provides an automatic lifting device for brick feeding of a molten steel tank, which comprises a lifting frame, a lifting basket, a lifting mechanism, a brick outlet roller way and a brick outlet pushing mechanism, wherein the lifting mechanism comprises a lifting motor, a plurality of lifting pulleys and a lifting steel wire rope, the lifting pulleys and the lifting steel wire rope are installed on the lifting frame, one end of the lifting steel wire rope is fixed on an output brick shaft of the lifting motor, the other end of the lifting steel wire rope is connected with the lifting basket after winding the plurality of lifting pulleys, and the lifting basket is controlled by the lifting mechanism to lift up and down along the lifting basket; the brick discharging roller way is arranged at the mouth of the molten steel tank, the height of the brick discharging roller way is lower than the bottom surface height of the lifting basket when the lifting basket is lifted to the highest position, one end of the brick discharging roller way extends to the position below the outlet of the lifting basket lifted to the highest position, and the other end of the brick discharging roller way extends to the molten steel tank; go out brick push mechanism and include brick push cylinder and play brick push rod, go out brick push cylinder and fix on hoisting frame upper portion, its piston rod is connected with a brick push rod, goes out the execution portion of brick push rod and promotes the promotion basket position phase-match that promotes to highest position, when promoting the basket and promote to highest position, goes out brick push rod and stretches into the promotion basket and will promote the interior resistant firebrick of basket and push away to a brick roll table under the control of a brick push cylinder.

The utility model discloses better technical scheme: the lifting device further comprises a brick feeding roller way and a brick feeding pushing mechanism, the brick feeding roller way is arranged at the bottom height of the brick feeding roller way when the brick feeding roller way is higher than the lifting basket and is arranged at the lowest position, the brick feeding pushing mechanism comprises a brick feeding pushing platform, a brick feeding pushing cylinder and a brick feeding pushing rod, the brick feeding pushing platform is arranged at the brick discharging end of the brick feeding roller way, the brick feeding pushing cylinder is lower than the bottom height of the brick feeding roller way when the brick feeding roller way is higher than the lifting basket and is arranged at the lowest position, the brick feeding pushing cylinder is installed on a support of the brick feeding roller way, the piston end of the brick feeding pushing cylinder is connected with the brick feeding pushing rod, and when the lifting basket descends to the lowest position, the brick feeding pushing cylinder controls the brick feeding pushing rod to push refractory bricks conveyed to the brick feeding pushing platform into the lifting basket.

The utility model discloses better technical scheme: the brick outlet roller way is an inclined roller way, one end of the brick outlet roller way extending into the molten steel tank is lower, and the brick outlet roller way is connected with a refractory brick conveying slide way or a refractory brick descending mechanism in the molten steel tank; one end of the brick discharging roller way, which is arranged outside the molten steel tank, is fixed on the lifting frame through a bracket.

The utility model discloses better technical scheme: the lifting device further comprises a control system, the control system comprises a first position sensor arranged on the brick feeding pushing platform, a gravity sensor arranged in the lifting basket, and a second position sensor arranged on the lifting frame and corresponding to the lifting basket to lift the highest position, the first position sensor is in signal connection with a controller of the brick feeding pushing cylinder, the gravity sensor is in signal connection with a controller of a lifting motor, and the second position sensor is in signal connection with a controller of the brick discharging pushing cylinder.

The utility model discloses better technical scheme: the lifting frame comprises a portal frame and a 7-shaped frame, a cross bar of the 7-shaped frame is connected with a transverse frame at the top of the portal frame, the lifting motor is arranged on the ground, the lifting pulleys of the lifting motor comprise at least three fixed pulleys distributed on the 7-shaped frame, one of the fixed pulleys is distributed at the lower part of a vertical bar of the 7-shaped frame and at the same height with an output rotating shaft of the lifting motor, one fixed pulley is distributed at the corner part of the 7-shaped frame, and the other fixed pulley is distributed at the connecting part of the 7-shaped frame and the portal frame; the lifting mechanism controls the lifting basket to move up and down along the portal frame.

The utility model discloses better technical scheme: the two ends of the lifting basket are open, the top of the lifting basket is closed, the brick feeding roller way and the brick discharging roller way are in the same straight line with the lifting basket on the plane position, and the two roller ways are respectively arranged at the two open face ends of the lifting basket.

The utility model discloses better technical scheme: the lifting device further comprises a control box, the signal output ends of the first position sensor, the gravity sensor and the second position sensor are respectively connected with the signal input end of the control box, and the signal output end of the control box is respectively connected with the signal control ends of the brick feeding pushing cylinder, the lifting motor and the brick discharging pushing cylinder.

The utility model discloses better technical scheme: the brick discharging pushing mechanism and the brick feeding pushing mechanism both comprise slideways, a first slideway of the brick discharging pushing mechanism and a brick discharging pushing cylinder are arranged on a cross rod of the 7-shaped frame, the brick discharging pushing rod comprises a vertical sliding rod and a transverse push rod, the vertical sliding rod is connected with the first slideway in a sliding mode through a sliding block, and the piston end of the brick discharging pushing cylinder is connected with the vertical sliding rod of the brick discharging pushing rod; the second slide of advancing brick push mechanism sets up in the side of advancing brick push platform, advances brick push rod and is the plate body structure, on vertical arranging into brick push platform in, advances the part of brick push rod and stretches out into brick push platform and hold with the piston that advances brick push cylinder and be connected.

The utility model conveys refractory bricks to the brick feeding table through the brick feeding roller way, the sensor on the brick feeding table senses the entering of bricks, and transmits signals to the brick feeding pushing oil cylinder, the brick feeding pushing oil cylinder controls the brick feeding pushing rod to push the refractory bricks into the lifting basket, then the lifting basket is controlled by a lifting motor and a lifting system to be lifted to a height above the mouth of the molten steel tank, and the brick discharging pushing rod is controlled by the brick discharging pushing oil cylinder to push the refractory bricks in the lifting basket to a brick discharging roller way extending into the molten steel tank, then the refractory bricks are conveyed to a refractory brick conveying device in the molten steel tank through a brick outlet roller way, the refractory bricks are conveyed to the bottom of the molten steel tank, the conveying device in the molten steel tank can be a mechanism the same as that of the lifting device, the brick bodies are conveyed to the bottom of the tank body through the lifting system, and the brick bodies can be directly conveyed to the bottom of the tank body in a sliding way.

The utility model has the advantages that:

(1) the utility model can simplify the transportation cost in a large amount, compared with the overhead traveling crane and the hoisting equipment, the utility model has small volume, the transportation can be carried out uninterruptedly, and the running cost of the overhead traveling crane and the like can be saved in a large amount;

(2) the utility model can greatly reduce the space occupation in the furnace, provide the largest operation space for the operators in the furnace, facilitate the operation and provide the possibility and space for the mechanized operation;

(3) because the utility model is an uninterrupted lifting operation, a brick with smaller volume and weight is transported every time, the safety risk can be reduced to the maximum extent only by adopting corresponding protective measures, and people do not need to come out from the tank to avoid hanging objects;

(4) the utility model can be free from the influence of hoisting facilities, and ensures smooth operation; the utility model is not affected by the crown block, can simultaneously operate a plurality of tank positions, and furthest exerts the productivity advantage; and the material transportation condition is easy to observe, the operation is reliable, and the problem occurrence treatment is simple and easy.

Drawings

Fig. 1 is a schematic front view of the basket of the present invention in the lowest position;

fig. 2 is a schematic side view of the basket of the present invention in the lowest position;

FIG. 3 is a schematic front view of the basket of the present invention at the highest position;

fig. 4 is a schematic side structure view of the hanging basket of the present invention at the highest position;

fig. 5 is a top view of the present invention;

fig. 6 is a control schematic diagram of the present invention.

In the figure: 1-hoisting frame, 100-portal frame, 101-7 style of calligraphy frame, 2-promote the basket, 3-play brick roll table, 4-promote motor, 5-promote the pulley, 6-promote wire rope, 7-ladle, 8-play brick propelling movement cylinder, 9-play brick propelling movement pole, 10-advance the brick roll table, 11-advance brick propelling movement platform, 12-advance brick propelling movement cylinder, 13-advance brick propelling movement pole, 14-first position sensor, 15-gravity sensor, 16-second position sensor, 17-first slide, 18-second slide, 19-resistant firebrick transfer slide.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 6 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The embodiment provides an automatic brick feeding lifting device for a molten steel tank, and as shown in fig. 1 to 5, the automatic brick feeding lifting device for the molten steel tank comprises a lifting frame 1, a lifting basket 2, a lifting mechanism, a brick discharging roller way 3, a brick discharging pushing mechanism, a brick feeding roller way 10 and a brick feeding pushing mechanism; the lifting frame 1 comprises a portal frame 100 and a 7-shaped frame 101, a cross bar of the 7-shaped frame 101 is connected with a transverse frame at the top of the portal frame 100, and fixing bases are arranged at the bottoms of vertical support rods of the portal frame 100 and the 7-shaped frame 101. The two ends of the lifting basket 2 are open, the top of the lifting basket is closed, the plane positions of the brick inlet roller way 10 and the brick outlet roller way 3 are on the same straight line with the lifting basket 2, and the two roller ways are respectively arranged at the two open end faces of the lifting basket 2. The lifting mechanism comprises a lifting motor 4, three lifting pulleys 5 and a lifting steel wire rope 6, the lifting motor 4 is arranged on the ground, the three lifting pulleys 5 are fixed pulleys and are respectively installed on a 7-shaped frame 101, one of the fixed pulleys is installed at the lower part of a vertical rod of the 7-shaped frame 101 and at the same height with an output rotating shaft of the lifting motor 4, one fixed pulley is installed at a corner part of the 7-shaped frame 101, and the third fixed pulley is installed at a connecting part of the 7-shaped frame 101 and the door-shaped frame 100; and one end of the lifting steel wire rope 6 is fixed on an output brick shaft of the lifting motor 4, the other end of the lifting steel wire rope is connected with the lifting basket 3 after winding the three lifting pulleys 5, and the lifting basket 2 can be controlled by the lifting motor 4 through winding the lifting steel wire rope 6 to move up and down along the portal frame 100.

The embodiment provides an automatic lifting device for a ladle brick inlet, as shown in fig. 2, 4 and 5, a brick outlet roller way 3 is arranged at the mouth of a ladle 7, the height of the brick outlet roller way is lower than the bottom surface height of a lifting basket 2 when the lifting basket 2 is lifted to the highest position, one end of the brick outlet roller way 3 extends to the position below the outlet of the lifting basket 2 lifted to the highest position, and the other end of the brick outlet roller way extends into the ladle 7; go out the lower slope roll table of one end of brick roll table 3 for stretching into ladle 7, go out the one end that brick roll table 3 stretched into in ladle 7 and the access connection of the resistant firebrick transfer slide 19 in ladle 7, resistant firebrick transfer slide is for following the slide of jar mouth to tank bottoms slope, can make things convenient for resistant firebrick monolithic downward slipway, can also be equipped with in the jar body with the utility model discloses a device that hoisting device structure is the same, its rotation direction that promotes the motor is opposite, can directly descend resistant firebrick to the tank bottoms. In order to ensure the stability of the brick discharging roller way 3, one end of the brick discharging roller way 3, which is arranged outside the molten steel tank 7, can be fixed on the lifting frame 1 through a bracket. Go out brick push mechanism and include brick propelling movement cylinder 8, brick propelling movement pole 9 and first slide 17, first slide 17 and brick propelling movement cylinder 8 set up on the horizontal pole of 7 style of calligraphy frame 101, brick propelling movement pole 9 includes vertical slide bar and horizontal push rod, and its vertical slide bar passes through slider and first slide 17 sliding connection, and the piston end that goes out brick propelling movement cylinder 8 and the vertical slide bar connection of brick propelling movement pole 9, and horizontal push rod is the execution portion of brick propelling movement pole 9, as shown in fig. 4, its position phase-match that sets up height and promotion basket 2 that promotes the highest position of horizontal push rod, when promotion basket 2 promoted the highest position, brick propelling movement pole 9 its horizontal push rod stretches into under the control of brick propelling movement cylinder 8 and promotes the interior resistant firebrick of basket 2 and pushes away to brick roll table 3. The brick feeding roller way 10 is arranged at the height higher than the bottom surface of the lifting basket 2 at the lowest position, the brick feeding pushing mechanism comprises a brick feeding pushing platform 11, a brick feeding pushing cylinder 12, a brick feeding pushing rod 13 and a second slideway 18, the brick feeding pushing platform 11 is arranged at the brick outlet end of the brick feeding roller way 10, the height of the second slideway 18 is lower than the bottom height of the brick feeding roller way 10 when the lifting basket 2 is arranged at the lowest position, the second slideway 18 is arranged on the side surface of the brick feeding pushing platform 11, the brick feeding pushing cylinder 12 is installed on the support of the brick feeding roller way 10, the brick feeding pushing rod 13 is of a plate body structure and is vertically arranged on the brick feeding pushing platform 11, part of the brick feeding pushing rod 13 extends out of the brick feeding pushing platform 11 and is connected with the piston end of the brick feeding pushing cylinder 12, as shown in figure 2, when the lifting basket 2 descends to the lowest position, the brick feeding pushing cylinder 12 controls the brick feeding pushing rod 13 to push the refractory bricks conveyed to the brick feeding pushing platform 11 into the lifting basket 2. The brick outlet roller way 3 and the brick inlet roller way 10 in the embodiment are both conventional conveying tools.

The lifting device in the embodiment further comprises a control system, as shown in fig. 6, the lifting device further comprises a control box and a control system, as shown in fig. 2 and 4, the control system comprises a first position sensor 14 arranged on the brick feeding pushing platform 11, a gravity sensor 15 arranged in the lifting basket 2, and a second position sensor 16 arranged at the lifting frame 1 corresponding to the lifting basket 2 at the highest lifting position, signal output ends of the first position sensor 14, the gravity sensor 15 and the second position sensor 16 are respectively connected with a signal input end of the control box, and signal output ends of the control box are respectively connected with signal control ends of the brick feeding pushing cylinder 12, the lifting motor 4 and the brick discharging pushing cylinder 8. The first position sensor 14 is in signal connection with the brick feeding pushing cylinder 12, the gravity sensor 15 is in signal connection with the lifting motor 4, and the second position sensor 16 is in signal connection with the lifting motor 4 and the brick discharging pushing cylinder 8 respectively.

When the utility model works, firstly, a single refractory brick is placed on the brick inlet roller way 1 Europe through a manual or forklift, when the refractory brick is transmitted to the brick inlet pushing platform 11 through the brick inlet roller way 10, the first position sensor 14 receives a signal and transmits the signal to the control box, the control box controls the brick inlet pushing cylinder 12 to work, the refractory brick is pushed into the lifting basket 2, the gravity sensor 15 in the lifting basket 2 receives the signal and transmits the signal to the control box, the control box controls the lifting motor 4 to work, the lifting steel wire rope 6 is wound, thereby the lifting basket 2 is driven to ascend along the lifting frame 1, when the lifting basket is ascended to the highest position, the second position sensor 16 senses that the lifting basket 2 is lifted in place, the signal is transmitted to the control box, the control box controls the lifting motor 4 to stop working, and simultaneously controls the brick outlet pushing cylinder 8 to work to drive the brick outlet pushing rod 9 to move the execution end thereof to extend into the lifting basket 2, thereby pushing the refractory brick in the lifting basket 2 to the brick outlet roller way 3, the brick discharging roller table 3 automatically conveys refractory bricks into the molten steel tank 7 and conveys the refractory bricks to the bottom of the tank through a refractory brick conveying slide way 19 in the molten steel tank 7.

The utility model discloses promote the brick piece by piece from ground to height above the ladle mouth of molten steel jar at concrete during operation to horizontal transfer is to near position of ladle mouth central line. The process of conveying the bricks needs to be continuously carried out, the ground outside the molten steel tank is matched by one person, the bricks are pushed into a brick tray of a lifting device, then the bricks are lifted to the height of the tank opening from the ground and are pushed out by a push rod, and the bricks horizontally move to the middle position of the tank opening

The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (8)

1. The utility model provides a ladle advances brick automatic lifting device which characterized in that: the lifting device comprises a lifting frame (1), a lifting basket (2), a lifting mechanism, a brick discharging roller way (3) and a brick discharging pushing mechanism, wherein the lifting mechanism comprises a lifting motor (4), a plurality of lifting pulleys (5) and a lifting steel wire rope (6), the lifting pulleys (5) and the lifting steel wire rope (6) are installed on the lifting frame (1), one end of the lifting steel wire rope (6) is fixed on an output brick shaft of the lifting motor (4), the other end of the lifting steel wire rope is connected with the lifting basket (2) after winding around the lifting pulleys (5), and the lifting basket (2) is controlled to lift up and down along the lifting frame (1) through the lifting mechanism; the brick discharging roller way (3) is arranged at the opening of the molten steel tank (7), the height of the brick discharging roller way is lower than the bottom height of the lifting basket (2) when the lifting basket (2) is lifted to the highest position, one end of the brick discharging roller way (3) extends to the position below the outlet of the lifting basket (2) lifted to the highest position, and the other end of the brick discharging roller way extends into the molten steel tank (7); go out brick push mechanism and include brick push cylinder (8) and brick push rod (9), go out brick push cylinder (8) and fix on hoisting frame (1) upper portion, its piston rod is connected with brick push rod (9), goes out the execution part of brick push rod (9) and promotes basket (2) position phase-match that promote to the highest position, when promoting basket (2) and promote to the highest position, goes out brick push rod (9) and stretches into under the control of brick push cylinder (8) and promote basket (2) interior resistant firebrick and push away to a brick roll table (3).

2. The automatic lifting device for the brick feeding of the molten steel ladle as claimed in claim 1, wherein: the lifting device also comprises a brick feeding roller way (10) and a brick feeding pushing mechanism, the brick feeding roller way (10) is arranged at the height higher than the bottom surface of the lifting basket (2) when the lifting basket is arranged at the lowest position, the brick feeding and pushing mechanism comprises a brick feeding and pushing platform (11), a brick feeding and pushing cylinder (12) and a brick feeding and pushing rod (13), the brick feeding pushing platform (11) is arranged at the brick discharging end of the brick feeding roller way (10), the height of the lifting basket is lower than the bottom height of the brick feeding roller way (10) when the lifting basket (2) is arranged at the lowest position, the brick feeding pushing cylinder (12) is arranged on a bracket of the brick feeding roller way (10), the piston end of the lifting basket is connected with a brick feeding push rod (13) and when the lifting basket (2) descends to the lowest position, the brick feeding pushing cylinder (12) controls the brick feeding pushing rod (13) to push the refractory bricks conveyed to the brick feeding pushing platform (11) into the lifting basket (2).

3. The automatic lifting device for the brick feeding of the molten steel ladle as claimed in claim 1 or 2, wherein: the brick outlet roller way (3) is an inclined roller way, one end of the brick outlet roller way extending into the molten steel tank (7) is lower, and the brick outlet roller way is connected with a refractory brick conveying slide way (19) or a refractory brick descending mechanism in the molten steel tank (7); one end of the brick discharging roller way (3) arranged outside the molten steel tank (7) is fixed on the lifting frame (1) through a bracket.

4. The automatic lifting device for the brick feeding of the molten steel ladle as claimed in claim 2, wherein: lifting device still includes control system, control system is including setting up first position sensor (14) on advancing brick propelling movement platform (11), setting up gravity sensor (15) in promoting basket (2), setting up second position sensor (16) that correspond in hoisting frame (1) and promote basket (2) promotion highest position, first position sensor (14) and the controller signal connection who advances brick propelling movement cylinder (12), gravity sensor (15) and the controller signal connection who promotes motor (4), second position sensor (16) and the controller signal connection who goes out brick propelling movement cylinder (8).

5. The automatic lifting device for the brick feeding of the molten steel tank according to claim 2, characterized in that: the lifting frame (1) comprises a portal frame (100) and a 7-shaped frame (101), the lifting motor (4) is arranged on the ground, the lifting pulleys (5) comprise at least three fixed pulleys distributed on the 7-shaped frame (101), one of the fixed pulleys is distributed at the lower part of a vertical rod of the 7-shaped frame (101) and at the same height with an output rotating shaft of the lifting motor (4), the other fixed pulley is distributed at the corner part of the 7-shaped frame (101), and the other fixed pulley is distributed at the connecting part of the 7-shaped frame (101) and the portal frame (100); the lifting mechanism controls the lifting basket (2) to move up and down along the portal frame (100).

6. The automatic lifting device for the brick feeding of the molten steel ladle as claimed in claim 2, wherein: the two ends of the lifting basket (2) are open, the top of the lifting basket is closed, the brick inlet roller way (10) and the brick outlet roller way (3) are located on the same straight line with the lifting basket (2) in the plane position, and the two roller ways are respectively arranged at the two open face ends of the lifting basket (2).

7. The automatic lifting device for the brick feeding of the molten steel ladle as claimed in claim 4, wherein: the lifting device further comprises a control box, signal output ends of the first position sensor (14), the gravity sensor (15) and the second position sensor (16) are respectively connected with a signal input end of the control box, and signal output ends of the control box are respectively connected with signal control ends of the brick feeding pushing cylinder (12), the lifting motor (4) and the brick discharging pushing cylinder (8).

8. The automatic lifting device for the brick feeding of the molten steel ladle as claimed in claim 5, wherein: the brick discharging pushing mechanism and the brick feeding pushing mechanism both comprise slideways, a first slideway (17) of the brick discharging pushing mechanism and a brick discharging pushing cylinder (8) are arranged on a cross rod of the 7-shaped frame (101), the brick discharging pushing rod (9) comprises a vertical sliding rod and a transverse push rod, the vertical sliding rod is connected with the first slideway (17) in a sliding mode through a sliding block, and the piston end of the brick discharging pushing cylinder (8) is connected with the vertical sliding rod of the brick discharging pushing rod (9); advance brick push mechanism's second slide (18) setting in advancing the side of brick push platform (11), advance brick push rod (13) and be the plate body structure, on vertical arranging into brick push platform (11), advance the part of brick push rod (13) and stretch out into brick push platform (11) and with advance the piston end connection of brick push cylinder (12).

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