CN116604007A - A protection device for molten iron tilting cylinder - Google Patents

Abstract

The invention relates to the technical field of metallurgical equipment. The invention relates to a tilting cylinder protection device of a molten iron car, which comprises a support column, wherein the top end of the support column is fixedly connected with a fixing frame, one end of the fixing frame is fixedly connected with a connecting seat, a rotating plate is arranged above the fixing frame, and the connecting seat is used for connecting the fixing frame and the rotating plate; the upper surface of the rotating plate is fixedly connected with a fixing component; one end, far away from the fixed component, of the bottom of the molten iron cylinder is abutted with a locking component; the locking component is fixedly connected with the rotating plate, and the bottom of the fixing frame is fixedly connected with the power component; the power assembly is used for pushing the rotating plate to rotate; a first sliding chute is formed in the cross beams at two sides of the fixing frame; through the setting of fixed subassembly and locking subassembly, fix the molten iron jar on the pivoted plate, the setting of spacing post makes the molten iron jar can not take place to rotate at the during operation, solves the problem that the molten iron jar upset was dropped at the during operation.

Description

A protection device for molten iron tilting cylinder

technical field

The invention relates to the technical field of metallurgical equipment, in particular to a protective device for a tilting cylinder of a molten iron car.

Background technique

At present, in the metallurgical industry, the molten iron tank is a kind of molten iron storage and transportation equipment in the ironworks. There are thick refractory materials in the tank to hold molten iron or molten steel. The molten iron tank is used to transfer the molten iron from the iron melting furnace to the converter for smelting, and the molten steel tank is used to transfer the molten steel smelted by the converter to the continuous casting ladle turntable, and then pour molten steel into the tundish, and form the molten steel into a specific size specification through cooling devices and other equipment billet.

In most ironworks, the turning mechanism at the bottom of the hot metal tank filled with molten iron is pulled by the gantry and the electric auxiliary hook to realize the turning over of the hot metal tank. dumping. However, there are many disadvantages in using the gantry to lift the molten iron tank. The rope will shake during lifting, and the molten iron in the molten iron tank will shake and splash out, which is very dangerous; and the rope will loosen or even break during lifting. The situation will lead to the dumping of the molten iron tank, the outflow of molten iron, and the high temperature of the molten iron will cause serious damage to the surrounding objects, and even cause damage to the staff; and the hoisting of the molten iron tank by the gantry has high requirements on the factory site space, and the occupied area is also small. Relatively large, the operation is loaded down with trivial details and the construction cost is high, and the actual effect is not good.

Chinese Patent Publication No. CN112605378A discloses a production method of ladle or molten iron ladle front and rear tipping device, including base, motor, wheel, tipping device, tipping bracket, and pulling oil cylinder, and the molten iron ladle is hoisted to the bottom by the molten iron truck Support and fix, then the motor works, drives the wheel to rotate, moves the tilting device to the slag removal station, pulls the piston rod of the oil cylinder back and shrinks, so that the bottom bracket rotates along the rotation axis at the junction point of the bottom bracket and the tilting device, and the water bag is tipped After reaching the set angle, the slag removal machine will work.

However, because the temperature of the molten iron in the ladle is very high, the hydraulic cylinder has no protective device for the hydraulic cylinder rod in this working environment for a long time, and with the splashing of molten iron, the seal of the hydraulic cylinder is easily scalded and damaged. After a period of normal operation There will be oil leakage at the piston of the hydraulic cylinder, the sealing ring will be scalded, and the piston rod will be strained.

Contents of the invention

For this reason, the technical problem to be solved by the present invention is to overcome the problem that the piston rod of the tilting cylinder of the molten iron car is easily scalded and damaged in the prior art.

In order to solve the above technical problems, the present invention provides a protective device for the tilting cylinder of the molten iron car,

In one embodiment of the present invention, a protective device for a tilting cylinder of a molten iron car is characterized in that it includes a support column, the top end of the support column is fixedly connected with a fixing frame, and one end of the fixing frame is fixedly connected with a connecting seat, A rotating plate is arranged above the fixed frame, and the connecting seat is used to connect the fixed frame and the rotating plate; the upper surface of the rotating plate is fixedly connected with a fixed assembly; the fixed assembly is plugged into the molten iron tank; the molten iron The end of the bottom of the cylinder away from the fixed assembly abuts against a locking assembly; the locking assembly is fixedly connected to the rotating plate, and the bottom of the fixed frame is fixedly connected to a power assembly; the power assembly is used to push the rotating plate to rotate; A chute is provided in the beam on both sides of the fixed frame.

In one embodiment of the present invention, a square groove is opened on the rotating plate; several rollers are connected to the inner rotation of the square groove to facilitate the movement of the molten iron cylinder; Moving chute two.

In one embodiment of the present invention, the fixed assembly includes a lower base; the lower base is in the shape of an inferior arc, and the lower surface of the lower base is fixedly connected with the rotating plate; the upper surface of the lower base is fixedly connected with an upper base The upper base is semi-arc-shaped; the thickness of the upper base is greater than that of the lower base, an arc-shaped groove is formed between the upper base and the lower base, and a semi-arc-shaped fixed frame is fixedly connected to the upper surface of the upper base.

In one embodiment of the present invention, the inside of the molten iron tank is hollow, and the bottom of the molten iron tank is provided with an annular boss; an arc-shaped groove is formed between the annular boss and the upper base and the lower base For plugging in, limit posts are arranged symmetrically on the boss.

In one embodiment of the present invention, the locking assembly includes a mounting groove; the inside of the mounting groove is hollow, and one end of the mounting groove fixedly connected to the rotating plate is open and communicated with the second sliding groove; Two groups of springs are fixedly connected to the inside of the installation groove, and the two groups of springs are arranged symmetrically; the upper end of the spring two is fixedly connected with a slider;

In one embodiment of the present invention, the power assembly includes a rotating seat; the rotating seat includes two vertical plates and a horizontal plate and is set in a concave shape, and the outer sides of the two vertical plates are respectively fixedly connected with rotating shafts; the The rotating shaft is rotatably connected to the fixed seat; the fixed seat is fixedly connected to both sides of the bottom of the fixed frame; a hydraulic cylinder is fixedly installed on the horizontal plate; the hydraulic rod of the hydraulic cylinder is fixedly connected to the bottom of the rotating plate.

In one embodiment of the present invention, the protective assembly includes a fixed piece and a rotating piece; both the fixed piece and the rotating piece include an arc plate and a straight plate; the fixed piece is fixedly connected to the end of the rotating piece away from the straight plate There are several hinges arranged alternately.

In one embodiment of the present invention, an L-shaped locking rod is fixedly installed on the straight plate of the rotating piece; a core groove is opened inside the end of the L-shaped locking rod away from the rotating plate; the core groove contacts and slides with the lock core connection; the core slot is provided with a slide bar and a baffle; the slide plate slides in the core slot and is used for guiding the lock core; a spring one is fixedly connected between the lock core and the core slot.

In one embodiment of the present invention, the inside of the chute is connected with an L-shaped telescopic column in contact with sliding; the inside of the crossbar of the L-shaped telescopic column is hollow; the end of the L-shaped telescopic column located inside the chute is fixed The driver board is connected.

In one embodiment of the present invention, a motor is fixedly installed on both sides of the fixing frame away from the connecting seat; a screw rod is fixedly connected to the output shaft of the motor; the screw rod is screwed to the drive plate; the The screw mandrel is used for the expansion and contraction of the L-shaped telescopic column.

The above technical solution of the present invention has the following advantages compared with the prior art:

A protective device for a tilting cylinder of a molten iron vehicle according to the present invention fixes the molten iron cylinder on the rotating plate through the setting of the fixing component and the locking component, and the setting of the limit column prevents the molten metal cylinder from rotating during work, which solves the problem of The problem that the iron water tank flipped and fell during work.

Through the setting of the protective component, asbestos is added to the protective component to protect the hydraulic rod of the hydraulic cylinder from being scratched by the iron flower generated when the molten iron splashes. The seal cup of the hydraulic cylinder is scalded, reducing the replacement frequency of the hydraulic cylinder.

Description of drawings

In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below according to the specific embodiments of the present invention and in conjunction with the accompanying drawings.

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a sectional view of the fixing frame of the present invention;

Fig. 3 is the cross-sectional view of molten iron tank and fixing assembly of the present invention;

Fig. 4 is the sectional view of L-shaped telescopic post of the present invention;

Fig. 5 is a perspective view of the fixing assembly of the present invention;

Fig. 6 is a perspective view of the locking assembly of the present invention;

Fig. 7 is a perspective view of the protective assembly of the present invention;

Fig. 8 is an enlarged view of place A in Fig. 1;

Fig. 9 is a perspective view of the lock cylinder of the present invention;

Explanation of reference signs in the manual: 1. Support column; 2. Fixed frame; 21. Chute one; 3. Connecting seat; Iron water cylinder; 51, cylinder body; 52, boss; 53, limit column; 6, power component; 61, rotating seat; 62, rotating shaft; 63, fixed seat; 64, protective component; 643, hinge; 644, L-shaped locking lever; 645, lock core; 646, core groove; 647, spring one; 648, slide bar; 649, baffle plate; 65, hydraulic cylinder; 7, fixed assembly; 71. Lower base; 72. Fixed frame; 73. Upper base; 8. Locking assembly; 81. Slider; 82. Spring two; 83. Mounting groove; 91. Motor; 92. Screw rod; ; 94, drive plate; 95, L-shaped telescopic column.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

Referring to Figures 1-9, a protective device for a tilting cylinder of a molten iron car of the present invention includes a support column 1, and universal wheels can be installed on the bottom of the support column 1 to facilitate the movement of the molten iron vehicle during work. The upper top of 1 is fixedly connected with a fixed frame 2, one end of the fixed frame 2 is fixedly connected with a connecting seat 3, a rotating plate 4 is arranged above the fixed frame 2, and the rotating plate 4 is rotatably connected with the connecting seat 3, the The connecting seat 3 is used to connect the fixed frame 2 and the rotating plate 4; the upper surface of the rotating plate 4 is fixedly connected with a fixed assembly 7; the fixed assembly 7 is plugged with the molten iron cylinder 5; the bottom of the molten iron cylinder 5 is away from the fixed One end of the component 7 is abutted with a locking component 8; the locking component 8 is fixedly connected with the rotating plate 4, and the bottom of the fixed frame 2 is fixedly connected with a power component 6; the power component 6 is used to push the rotating plate 4 Rotate; there is a chute-21 in the beam on both sides of the fixed frame 2.

When working, the rotating plate 4 is driven by the power assembly 6 and is placed in a horizontal position. The molten iron cylinder 5 is pushed to the fixed assembly 7. When the molten iron cylinder 5 and the fixed assembly 7 are inserted, the locking assembly 8 shrinks the molten iron cylinder 5. Tightly fix the molten iron cylinder 5, and through the cooperation of the fixing assembly 7 and the locking assembly 8, the danger caused by the movement of the molten iron cylinder 5 when the molten iron truck transports the molten iron cylinder 5 is avoided, and the molten iron cylinder 5 will not fall when it is dumped. The phenomenon that the molten iron tank 5 is overturned and the molten iron flows out ensures the safety of the molten iron tank 5 during transportation and dumping, and also improves the safety of the staff when they are working;

The rotating plate 4 is provided with a square groove 41; the inside of the square groove 41 is rotatably connected with several rollers 42 that facilitate the movement of the molten iron cylinder 5; The second chute 43; the setting of the roller 42 makes the molten iron cylinder 5 move smoothly and safely on the rotating plate 4 to the fixed assembly 7, and saves more labor;

The fixed assembly 7 includes a lower base 71; the lower base 71 is in an arc shape, and the lower surface of the lower base 71 is fixedly connected with the rotating plate 4; the upper surface of the lower base 71 is fixedly connected with an upper base 73; Above-mentioned upper base 73 is semicircular arc shape; The thickness of upper base 73 is greater than the thickness of lower base 71, so arc groove is formed between upper base 73 and lower base 71, because lower base 71 is inferior arc, upper base 73 is semicircular arc, so the upper base 73 and the lower base 71 form a gap at the end; the upper surface of the upper base 73 is fixedly connected with a semicircular fixed frame 72, and the height of the fixed frame 72 is set according to the actual situation, and the fixed frame 72 Used to stabilize the molten iron cylinder 5 and ensure the stability of the molten iron cylinder 5;

The inside of the molten iron cylinder 5 is hollow to form a cylinder body 51, and the bottom of the molten iron cylinder 5 is provided with an annular boss 52; an arc-shaped concave is formed between the annular boss 52 and the upper base 73 and the lower base 71. The slot is plugged in, and the boss 52 is symmetrically provided with a limit post 53, which limits the rotation of the molten iron cylinder 5 to ensure that the molten iron cylinder 5 does not rotate when it is dumped, and avoids the offset of the discharge port (not shown);

The locking assembly 8 includes a mounting groove 83; the inside of the mounting groove 83 is hollow, and the fixed connection end of the mounting groove 83 and the rotating plate 4 is open and communicated with the second chute 43; the mounting The interior of the groove 83 is fixedly connected with two groups of springs 82, and the two groups of springs 82 are arranged symmetrically; the upper end of the springs 82 is fixedly connected with a slider 81; during work, the slider 81 abuts against the boss 52, and the slider 81 One end that is in contact with the boss 52 is arc-shaped, and the other end of the slide block 81 is arranged as a slope, and the slope is convenient for the molten iron cylinder 5 to enter the fixed assembly 7; Slide up and down in the chute two 43;

During work, the molten iron cylinder 5 filled with molten iron is transported and placed on the roller 42 on the rotating plate 4 to push the molten iron cylinder 5, and the molten iron cylinder 5 moves on the roller 42. When the molten iron cylinder 5 moves to the fixed assembly 7, The boss 52 at the bottom of the molten iron tank 5 first contacts with one end of the inclined surface of the slider 81, and continues to push the molten iron tank 5, the boss 52 generates downward pressure on the slider 81, and the slider 81 is pressed into the installation groove along the chute 243 83. Continue to push the molten iron cylinder 5 until the arc-shaped groove is formed between the boss 52 and the upper base 73 and the lower base 71 for complete insertion, and the limit post 53 is stuck on the upper base 73 and the lower base 71 to form at the end In the gap, when the boss 52 is fully docked with the limit post 53, the fixed frame 72 is in full contact with the cylinder body 51, and the slide block 81 is not restricted by the pressure of the molten iron cylinder 5. Under the action of the spring 2 82, the slide block 81 Push out the installation groove 83 and abut against the boss 52, and fix the molten iron cylinder 5 in the fixing assembly 7, so that the molten iron cylinder 5 can be stably performed for subsequent operations;

The power assembly 6 includes a rotating seat 61; the rotating seat 61 includes two vertical plates and a horizontal plate and is arranged in a concave shape, and the outer sides of the two vertical plates are respectively fixedly connected with a rotating shaft 62; the rotating shaft 62 is connected to the fixed seat 63 is rotationally connected; the fixed seat 63 is fixedly connected to both sides of the bottom of the fixed frame 2; a hydraulic cylinder 65 is fixedly installed on the horizontal plate; the hydraulic rod of the hydraulic cylinder 65 is fixedly connected to the bottom of the rotating plate 4;

The hydraulic rod of the hydraulic cylinder 65 is sleeved with a protective assembly 64; the protective assembly 64 includes a fixed piece 641 and a rotating piece 642; the fixed piece 641 is fixed on the rotating seat 61; the fixed piece 641 and the rotating piece 642 are both Including arc plate and straight plate, the fixed piece 641 and the rotating piece 642 form a cylinder when closed, which can be sleeved on the hydraulic rod of the hydraulic cylinder 65, and the diameter of the formed cylinder is larger than the hydraulic rod diameter of the hydraulic cylinder 65 , Asbestos can be added to the gap formed between the two, and the tops of the fixed piece 641 and the rotating piece 642 can be sealed with rubber rings to protect the hydraulic rod of the hydraulic cylinder 65 from being damaged by iron flakes produced when molten iron splashes, and at the same time, asbestos can be reduced. The temperature of the hydraulic rod protects the seal of the hydraulic cylinder 65 from being scalded to cause seal failure, causing oil leakage damage to the hydraulic cylinder 65; the fixed piece 641 and the end of the rotating piece 642 away from the straight plate are fixedly connected with several alternately arranged joints. page 643;

During work, when it is necessary to dump the molten iron cylinder 5 to pour out the iron tree, the hydraulic rod of the hydraulic cylinder 65 is extended to push the rotating plate 4 to rotate around the connecting seat 3. Due to the setting of the rotating seat 61 and the rotating shaft 62, the hydraulic cylinder 65 can follow the rotation The plates 4 rotate together, and the molten iron cylinder 5 is gradually dumped on the rotating plate 4, and the molten iron is poured out. After the molten iron is completely poured out, the hydraulic rod of the hydraulic cylinder 65 shrinks, and the rotating plate 4 is retracted until the rotating plate 4 is placed horizontally and moved out. For the empty molten iron tank 5, fix the next molten iron tank 5 full of molten iron on the rotating plate 4 again, continue the above operation, and realize automatic pouring of molten iron;

An L-shaped locking rod 644 is fixedly installed on the straight plate of the rotating piece 642; a core groove 646 is opened inside the end of the L-shaped locking rod 644 away from the rotating piece 642; The lock core 645 is provided with a slide bar 648 and a baffle 649; the slide bar 648 slides in the core groove 646 and is used for guiding the lock core 645; a spring is fixedly connected between the lock core 645 and the core groove 646 - 647; when the protection assembly 64 is working, it is necessary to close the fixed piece 641 and the rotating piece 642, press the baffle plate 649, and press the lock core 645 into the core groove 646, at this time, the fixed piece 641 and the rotating piece 642 are closed, and the locking piece is released. Plate 649, lock core 645 is ejected core groove 646 under the effect of spring 1 647, realizes the closing of fixed piece 641 and rotating piece 642, makes the hydraulic rod that adds between fixed piece 641, rotating piece 642 and hydraulic cylinder 65 Asbestos tightly wraps the hydraulic rod;

The inside of the chute-21 is contact-slidably connected with an L-shaped telescopic column 95; the inside of the horizontal bar of the L-shaped telescopic column 95 is hollow; one end of the L-shaped telescopic column 95 located inside the chute-21 is fixedly connected with a drive plate 94;

A motor 91 is fixedly installed on one end of the two sides of the fixed frame 2 away from the connecting seat 3; a screw 92 is fixedly connected to the output shaft of the motor 91; the screw 92 is screwed to the drive plate 94, and the screw 92 One end of the rod 92 away from the output shaft of the motor 91 is fixedly connected with a limit block 93, and the limit block 93 is used to limit the movement of the L-shaped telescopic column 95, so as to prevent the L-shaped telescopic column 95 from breaking away from the screw rod 92 and make the L-shaped telescopic column 95 move. Column 95 has a section in chute one 21 all the time; Described screw mandrel 92 is used for the expansion and contraction of L-shaped telescopic column 95; The forward rotation of the screw mandrel 92 drives the drive plate 94 that is threadedly connected with the screw mandrel 92 to move linearly, and the drive plate 94 drives the L-shaped telescopic column 95 to elongate, which increases the support area of the support column 1, so that the entire device when the molten iron tank 5 is dumped There will be no overturning, which improves the safety of production;

Working principle: The molten iron cylinder 5 filled with molten iron is transported and placed on the roller 42 on the rotating plate 4 to push the molten iron cylinder 5, and the molten iron cylinder 5 moves on the roller 42. When the molten iron cylinder 5 moves to the fixed assembly 7, The boss 52 at the bottom of the molten iron tank 5 first contacts with one end of the inclined surface of the slider 81, and continues to push the molten iron tank 5, the boss 52 generates downward pressure on the slider 81, and the slider 81 is pressed into the installation groove along the chute 243 83. Continue to push the molten iron cylinder 5 until the arc-shaped groove is formed between the boss 52 and the upper base 73 and the lower base 71 for complete insertion, and the limit post 53 is stuck on the upper base 73 and the lower base 71 to form at the end In the gap, when the boss 52 is fully docked with the limit post 53, the fixed frame 72 is in full contact with the molten iron cylinder 5, and the slider 81 is not restricted by the pressure of the molten iron cylinder 5. Under the action of the spring 2 82, the slider 81 Eject the installation groove 83 and abut against the boss 52, and the molten iron cylinder 5 is fixed in the fixed assembly 7. When the molten iron cylinder 5 needs to be dumped and the iron tree is poured out, the motor 91 is started, and the output shaft of the motor 91 drives the screw mandrel 92 to rotate positively. Rotate, screw mandrel 92 normal rotations drive drive plate 94 that is threadedly connected with screw mandrel 92 to move linearly, and drive plate 94 drives L-shaped telescopic column 95 to elongate, has increased the supporting area of support column 1, makes when molten iron cylinder 5 dumps molten iron The whole device will not overturn, which improves the safety of production; the hydraulic rod of the hydraulic cylinder 65 is extended to push the rotating plate 4 to rotate around the connecting seat 3. Due to the setting of the rotating seat 61 and the rotating shaft 62, the hydraulic cylinder 65 can follow the rotating plate 4 rotate together, the molten iron cylinder 5 is gradually dumped on the rotating plate 4, and the molten iron is poured out. After the molten iron is completely poured out, the hydraulic rod of the hydraulic cylinder 65 shrinks, and the rotating plate 4 is retracted until the rotating plate 4 is placed horizontally and moved out of the empty space. Because the hydraulic cylinder 65 is in contact with the high-temperature molten iron cylinder 5 for a long time, the temperature of the hydraulic rod of the hydraulic cylinder 65 is too high, and the seal of the hydraulic cylinder 65 is scalded, causing oil leakage at the seal of the hydraulic cylinder 65, making the hydraulic cylinder 65 cannot work normally, and the hydraulic cylinder 65 needs to be frequently replaced. Therefore, a protective assembly 64 is provided. When the protective assembly 64 is working, the fixed piece 641 and the rotating piece 642 need to be closed, and the baffle plate 649 is pressed to press the lock cylinder 645 into the core groove 646 At this time, the fixed piece 641 and the rotating piece 642 are closed, the baffle plate 649 is released, and the lock core 645 is pushed out of the core groove 646 under the action of the spring 1 647 to realize the closing of the fixed piece 641 and the rotating piece 642, so that the fixed piece 641 1. The asbestos added between the rotating piece 642 and the hydraulic rod of the hydraulic cylinder 65 tightly wraps the hydraulic rod to protect the hydraulic rod of the hydraulic cylinder 65 from being damaged by the iron flakes produced when the molten iron splashes. At the same time, asbestos can reduce the temperature of the hydraulic rod. Protect the seal of the hydraulic cylinder 65 from being scalded to cause seal failure, increase the service time of the hydraulic cylinder 65, and reduce the frequency of replacement of the hydraulic cylinder 65.

Apparently, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in various forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (10)

1. The utility model provides a molten iron car tilting cylinder protector which characterized in that: the fixing support comprises a support column (1), wherein the top end of the support column (1) is fixedly connected with a fixing frame (2), one end of the fixing frame (2) is fixedly connected with a connecting seat (3), a rotating plate (4) is arranged above the fixing frame (2), and the connecting seat (3) is used for connecting the fixing frame (2) and the rotating plate (4); the upper surface of the rotating plate (4) is fixedly connected with a fixing assembly (7); the fixing component (7) is spliced with the molten iron cylinder (5); one end, far away from the fixed component (7), of the bottom of the molten iron cylinder (5) is abutted with a locking component (8); the locking component (8) is fixedly connected with the rotating plate (4), and the bottom of the fixing frame (2) is fixedly connected with the power component (6); the power assembly (6) is used for pushing the rotating plate (4) to rotate; a first sliding groove (21) is formed in the cross beams at two sides of the fixing frame (2).

2. The ladle car tilting cylinder protection device according to claim 1, wherein: square grooves (41) are formed in the rotating plate (4); a plurality of rolling shafts (42) which are convenient for the molten iron cylinder (5) to move are rotatably connected in the square groove (41); the rotating plate (4) is provided with a second chute (43) for the locking assembly (8) to move up and down.

3. The ladle car tilting cylinder protection device according to claim 2, wherein: the fixed assembly (7) comprises a lower base (71); the lower base (71) is in a shape of a bad circular arc, and the lower surface of the lower base (71) is fixedly connected with the rotating plate (4); the upper surface of the lower base (71) is fixedly connected with an upper base (73); the upper base (73) is in a semicircular arc shape; the radial thickness of the upper base (73) is greater than that of the lower base (71), an arc-shaped groove is formed between the upper base (73) and the lower base (71), and a semicircular arc-shaped fixing frame (72) is fixedly connected to the upper surface of the upper base (73).

4. A ladle car tilting cylinder guard according to claim 3, wherein: the interior of the molten iron cylinder (5) is hollow, and an annular boss (52) is arranged at the bottom of the molten iron cylinder (5); arc grooves are formed between the annular boss (52) and the upper base (73) and between the annular boss and the lower base (71), and limiting columns (53) are symmetrically arranged on the boss (52).

5. The ladle car tilting cylinder guard of claim 4, wherein: the locking assembly (8) comprises a mounting groove (83); the inside of the mounting groove (83) is hollow, and one end of the mounting groove (83) fixedly connected with the rotating plate (4) is open and communicated with the second sliding groove (43); the inside of the mounting groove (83) is fixedly connected with two groups of second springs (82), and the two groups of second springs (82) are symmetrically arranged; the upper end of the second spring (82) is fixedly connected with a sliding block (81); the sliding block (81) is in contact sliding connection with the second sliding groove (43).

6. The ladle car tilting cylinder guard of claim 5, wherein: the power assembly (6) comprises a rotating seat (61); the rotating seat (61) comprises two vertical plates and a transverse plate and is arranged in a concave shape, and the outer sides of the two vertical plates are fixedly connected with rotating shafts (62) respectively; the rotating shaft (62) is rotationally connected with the fixed seat (63); the fixing seats (63) are fixedly connected to two sides of the bottom of the fixing frame (2); a hydraulic cylinder (65) is fixedly arranged on the transverse plate; the hydraulic rod of the hydraulic cylinder (65) is fixedly connected with the bottom of the rotating plate (4).

7. The ladle car tilting cylinder guard of claim 6, wherein: a protective component (64) is sleeved on the hydraulic rod of the hydraulic cylinder (65); the protection component (64) comprises a fixed sheet (641) and a rotating sheet (642); the fixed sheet (641) and the rotating sheet (642) comprise an arc plate and a straight plate; the fixed sheet (641) and one end, far away from the straight plate, of the rotating sheet (642) are fixedly connected with a plurality of hinges (643) which are alternately arranged.

8. The ladle car tilting cylinder protection device according to claim 7, wherein an L-shaped locking rod (644) is fixedly installed on the straight plate of the rotating plate (642); a core groove (646) is formed in one end of the L-shaped locking rod (644) far away from the rotating plate (642); the core groove (646) is in contact sliding connection with the lock cylinder (645); a sliding rod (648) and a baffle (649) are arranged on the core groove (645); a slide plate (648) slides within the core groove (646) and is used for guiding the lock cylinder (645); a first spring (647) is fixedly connected between the lock cylinder (645) and the core groove (646).

9. The ladle car tilting cylinder guard of claim 8, wherein: an L-shaped telescopic column (95) is connected in a contact sliding manner in the first sliding chute (21); the inside of the cross rod of the L-shaped telescopic column (95) is hollow; one end of the L-shaped telescopic column (95) positioned in the first chute (21) is fixedly connected with a driving plate (94).

10. The ladle car tilting cylinder guard of claim 9, wherein: a motor (91) is fixedly arranged at one end, far away from the connecting seat (3), of two sides of the fixing frame (2); a screw rod (92) is fixedly connected to an output shaft of the motor (91); the screw rod (92) is in threaded connection with the driving plate (94); the screw rod (92) is used for stretching and retracting the L-shaped telescopic column.