Ladle tilting cylinder protection device

Abstract

The present application relates to the technical fields of metallurgical equipment, and discloses a molten iron car tilting cylinder protection device, which comprises a supporting column, a fixed frame is fixedly connected to the top end of the supporting column, a connecting seat is fixedly connected to one end of the fixed frame, a rotating plate is arranged above the fixed frame, and the connecting seat is used for connecting the fixed frame and the rotating plate; a fixing assembly is fixedly connected to the upper surface of the rotating plate; a locking assembly is abutted to the end of the bottom of the molten iron cylinder away from the fixing assembly; the locking assembly is fixedly connected to the rotating plate; a power assembly is fixedly connected to the bottom of the fixed frame; the power assembly is used for pushing the rotating plate to rotate; a sliding groove one is formed in the crossbeam on the two sides of the fixed frame; the molten iron cylinder is fixed on the rotating plate through the fixing assembly and the locking assembly; the limiting column is arranged to prevent the molten iron cylinder from rotating during work, and the problem that the molten iron cylinder is overturned and falls during work is solved.

Description

Technical Field

[0001] This invention relates to the field of metallurgical equipment technology, and in particular to a protective device for the tilting cylinder of a molten iron car. Background Technology

[0002] Currently, in the metallurgical industry, molten iron ladles are a type of equipment used in ironmaking plants for holding and transporting molten iron. The ladles are lined with thick refractory material and hold molten iron or steel. Molten iron ladles are used to transfer molten iron from blast furnaces to converters for smelting, while molten steel ladles are used to transfer molten steel from converters to the continuous casting ladle turntable. Molten steel is then poured into the intermediate ladle, and after passing through cooling devices and other equipment, the molten steel is shaped into steel billets of specific sizes and specifications.

[0003] Most ironworks use a gantry crane and an electric auxiliary hook to tilt the bottom of a ladle filled with molten iron. The gantry crane and electric auxiliary hook work together to ensure a smooth tilt and pouring of the molten iron. However, this method of using a gantry crane to lift molten iron has many drawbacks. During lifting, the ropes may vibrate, causing the molten iron to slosh and spill out, which is very dangerous. Furthermore, the ropes may loosen or even break, causing the ladle to tip over and the molten iron to spill out. The high temperature of the molten iron can cause serious damage to surrounding objects and even injure workers. Additionally, gantry cranes require a large factory area, are cumbersome to operate, have high construction costs, and are not very effective in practice.

[0004] Chinese Patent Publication No. CN112605378A discloses a method for producing a tilting device for molten steel ladles or molten iron ladles, comprising a base, a motor, wheels, a tilting device, a tilting bracket, and a reversing cylinder. The molten iron ladle is hoisted to the base and fixed by a molten iron car. Then, the motor operates, driving the wheels to rotate and moving the tilting device to the slag removal station. The piston rod of the reversing cylinder retracts, causing the base to rotate along the axis at the junction of the base and the tilting device. After the ladle tilts to a set angle, the slag removal machine operates.

[0005] However, because the molten iron in the ladle is at a very high temperature, the hydraulic cylinder rod has no protective device when working in this environment for a long time. In addition, with the splashing of molten iron, the seals of the hydraulic cylinder are easily burned and damaged. After a period of normal operation, problems such as oil leakage at the piston of the hydraulic cylinder, burnt seals, and strained piston rod will occur. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem of the piston rod of the tilting cylinder of the molten iron car being easily damaged by heat in the prior art.

[0007] To solve the above-mentioned technical problems, the present invention provides a protective device for the tilting cylinder of a molten iron car.

[0008] 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, a fixed frame is fixedly connected to the top of the support column, a connecting seat is fixedly connected to one end of the fixed frame, a rotating plate is arranged above the fixed frame, and the connecting seat is used to connect the fixed frame and the rotating plate; a fixed component is fixedly connected to the upper surface of the rotating plate; the fixed component is inserted into the molten iron cylinder; a locking component abuts against the bottom of the molten iron cylinder away from the fixed component; the locking component is fixedly connected to the rotating plate; a power component is fixedly connected to the bottom of the fixed frame; the power component is used to drive the rotating plate to rotate; and a sliding groove is formed in the crossbeams on both sides of the fixed frame.

[0009] In one embodiment of the present invention, a square groove is provided on the rotating plate; a plurality of rollers are rotatably connected inside the square groove to facilitate the movement of the molten iron cylinder; and a second sliding groove is provided on the rotating plate for the up-and-down movement of the locking assembly.

[0010] In one embodiment of the present invention, the fixing component includes a lower base; the lower base is of a minor arc shape, and the lower surface of the lower base is fixedly connected to a rotating plate; an upper base is fixedly connected to the upper surface of the lower base; the upper base is of a semi-circular arc shape; the thickness of the upper base is greater than the thickness of the lower base, and an arc-shaped groove is formed between the upper base and the lower base; a semi-circular arc-shaped fixing frame is fixedly connected to the upper surface of the upper base.

[0011] In one embodiment of the present invention, the interior of the molten iron cylinder is hollow, and an annular boss is provided at the bottom of the molten iron cylinder; the annular boss is inserted into an arc-shaped groove between the upper base and the lower base, and limit posts are symmetrically provided on the boss.

[0012] In one embodiment of the present invention, the locking assembly includes a mounting groove; the interior of the mounting groove is hollow, and one end of the mounting groove that is fixedly connected to the rotating plate is open and communicates with the sliding groove; two sets of springs are fixedly connected inside the mounting groove, and the two sets of springs are symmetrically arranged; a slider is fixedly connected to the upper end of the spring; the slider is in contact with the sliding groove.

[0013] 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 configured in a concave shape, and a rotating shaft is fixedly connected to the outer side of each of the two vertical plates; the rotating shaft is rotatably connected to a fixed seat; the fixed seat is fixedly connected to the bottom two sides of a 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.

[0014] In one embodiment of the present invention, the protective component includes a fixed plate and a rotating plate; both the fixed plate and the rotating plate include an arc plate and a straight plate; a plurality of alternately arranged hinges are fixedly connected to the end of the fixed plate and the rotating plate away from the straight plate.

[0015] In one embodiment of the present invention, an L-shaped locking rod is fixedly installed on the straight plate of the rotating plate; a core groove is formed inside the end of the L-shaped locking rod away from the rotating plate; the core groove is in contact with and slidably connected to the lock cylinder; a slide rod and a baffle are provided on the core groove; the slide plate slides in the core groove and is used to guide the lock cylinder; a spring is fixedly connected between the lock cylinder and the core groove.

[0016] In one embodiment of the present invention, an L-shaped telescopic column is slidably connected inside the slide groove; the crossbar of the L-shaped telescopic column is hollow; and a drive plate is fixedly connected to one end of the L-shaped telescopic column inside the slide groove.

[0017] In one embodiment of the present invention, a motor is fixedly installed at one end of both sides of the fixing frame away from the connecting seat; a lead screw is fixedly connected to the output shaft of the motor; the lead screw is threadedly connected to the drive plate; the lead screw is used for the extension and retraction of the L-shaped telescopic column.

[0018] The technical solution of the present invention has the following advantages compared with the prior art:

[0019] The present invention discloses a protective device for the tilting cylinder of a molten iron car. By setting up a fixing component and a locking component, the molten iron cylinder is fixed on a rotating plate. The setting of the limiting post prevents the molten iron cylinder from rotating during operation, thus solving the problem of the molten iron cylinder tipping over and falling off during operation.

[0020] By incorporating asbestos into the protective components, the hydraulic cylinder's hydraulic rod is protected from being scratched by the iron sparks generated when molten iron splashes. At the same time, the asbestos reduces the temperature of the hydraulic rod, which is in prolonged contact with the high-temperature molten iron cylinder, preventing the hydraulic cylinder's sealing cup from being scalded and reducing the frequency of hydraulic cylinder replacement. Attached Figure Description

[0021] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a cross-sectional view of the fixing frame of the present invention;

[0024] Figure 3 This is a cross-sectional view of the molten iron cylinder and fixing assembly of the present invention;

[0025] Figure 4This is a cross-sectional view of the L-shaped telescopic column of the present invention;

[0026] Figure 5 This is a perspective view of the fixing component of the present invention;

[0027] Figure 6 This is a perspective view of the locking component of the present invention;

[0028] Figure 7 This is a perspective view of the protective component of the present invention;

[0029] Figure 8 yes Figure 1 Enlarged view of point A in the middle;

[0030] Figure 9 This is a perspective view of the lock cylinder of the present invention;

[0031] Explanation of reference numerals in the accompanying drawings: 1. Support column; 2. Fixing frame; 21. Slide 1; 3. Connecting seat; 4. Rotating plate; 41. Square channel; 42. Roller; 43. Slide 2; 5. Iron cylinder; 51. Cylinder body; 52. Boss; 53. Limiting column; 6. Power assembly; 61. Rotating seat; 62. Rotating shaft; 63. Fixing seat; 64. Protective assembly; 641. Fixing plate; 642. Rotating plate; 643. Hinge; 644. L-shaped locking rod; 645. Lock cylinder; 646. Core groove; 647. Spring 1; 648. Slide rod; 649. Baffle; 65. Hydraulic cylinder; 7. Fixing assembly; 71. Lower base; 72. Fixing frame; 73. Upper base; 8. Locking assembly; 81. Slider; 82. Spring 2; 83. Mounting slot; 91. Motor; 92. Lead screw; 93. Limit block; 94. Drive plate; 95. L-shaped telescopic column. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0033] Reference Figure 1-9As shown, a protective device for the tilting cylinder of a molten iron car according to the present invention includes a support column 1. A caster wheel can be installed at the bottom of the support column 1 to facilitate the movement of the molten iron car during operation. A fixed frame 2 is fixedly connected to the top of the support column 1. A connecting seat 3 is fixedly connected to one end of the fixed frame 2. A rotating plate 4 is arranged above the fixed frame 2. The rotating plate 4 is rotatably connected to the connecting seat 3, and the connecting seat 3 is used to connect the fixed frame 2 and the rotating plate 4. A fixing component 7 is fixedly connected to the upper surface of the rotating plate 4. The fixing component 7 is inserted into the molten iron cylinder 5. A locking component 8 abuts against the bottom of the molten iron cylinder 5 away from the fixing component 7. The locking component 8 is fixedly connected to the rotating plate 4. A power component 6 is fixedly connected to the bottom of the fixed frame 2. The power component 6 is used to drive the rotating plate 4 to rotate. A sliding groove 21 is provided in the crossbeams on both sides of the fixed frame 2.

[0034] During operation, the rotating plate 4 is driven by the power component 6 and placed in a horizontal position. The molten iron cylinder 5 is pushed to the fixing component 7. After the molten iron cylinder 5 is inserted into the fixing component 7, the locking component 8 tightens the molten iron cylinder 5 and fixes it. Through the cooperation of the fixing component 7 and the locking component 8, the danger caused by the movement of the molten iron cylinder 5 during the transportation of the molten iron car is avoided. It also prevents the molten iron cylinder 5 from tipping over and the molten iron from flowing out when it is tilted. This ensures the safety of the molten iron cylinder 5 during transportation and tilting and improves the safety of the workers.

[0035] The rotating plate 4 has a square groove 41; several rollers 42 are rotatably connected inside the square groove 41 to facilitate the movement of the molten iron cylinder 5; the rotating plate 4 has a sliding groove 43 for the locking assembly 8 to move up and down; the rollers 42 make the molten iron cylinder 5 move smoothly and safely towards the fixed assembly 7 on the rotating plate 4, and save more effort.

[0036] The fixing component 7 includes a lower base 71; the lower base 71 is a minor arc shape, and its lower surface is fixedly connected to the rotating plate 4; an upper base 73 is fixedly connected to the upper surface of the lower base 71; the upper base 73 is a semi-circular arc shape; the thickness of the upper base 73 is greater than the thickness of the lower base 71, thus forming an arc-shaped groove between the upper base 73 and the lower base 71. Since the lower base 71 is a minor arc and the upper base 73 is a semi-circular arc, a notch is formed at the end of the upper base 73 and the lower base 71; a semi-circular arc-shaped fixing frame 72 is fixedly connected to the upper surface of the upper base 73. The height of the fixing frame 72 is set according to the actual situation. The fixing frame 72 is used to stabilize the molten iron cylinder 5 and ensure the stability of the molten iron cylinder 5.

[0037] The interior of the molten iron cylinder 5 is hollow, forming a cylinder body 51. The bottom of the molten iron cylinder 5 is provided with an annular boss 52. The annular boss 52 is inserted into the upper base 73 and the lower base 71 in an arc-shaped groove. The boss 52 is symmetrically provided with limit posts 53. The limit posts 53 restrict the rotation of the molten iron cylinder 5, ensuring that the molten iron cylinder 5 does not rotate when tilted, and avoiding the displacement of the discharge port (not shown).

[0038] The locking assembly 8 includes a mounting groove 83; the interior of the mounting groove 83 is hollow, and one end of the mounting groove 83 that is fixedly connected to the rotating plate 4 is open and communicates with the second slide groove 43; two sets of second springs 82 are fixedly connected inside the mounting groove 83, and the two sets of second springs 82 are symmetrically arranged; a slider 81 is fixedly connected to the upper end of the second spring 82; during operation, the slider 81 abuts against the boss 52, the end of the slider 81 that contacts the boss 52 is arc-shaped, and the other end of the slider 81 is set as a slope, which facilitates the entry of the molten iron cylinder 5 into the fixing assembly 7; the slider 81 is in contact with and slidably connected to the second slide groove 43, and the slider 81 can slide up and down within the second slide groove 43;

[0039] During operation, the molten iron cylinder 5, filled with molten iron, is transported and placed on the roller 42 on the rotating plate 4. Pushing the molten iron cylinder 5, it moves along the roller 42. As the molten iron cylinder 5 moves towards the fixed assembly 7, the boss 52 at the bottom of the molten iron cylinder 5 first contacts one end of the inclined surface of the slider 81. Continuing to push the molten iron cylinder 5, the boss 52 exerts downward pressure on the slider 81, causing the slider 81 to press into the mounting groove 83 along the sliding groove 43. Continuing to push the molten iron cylinder 5, until the boss 52 contacts the upper base 73 and... The lower base 71 forms an arc-shaped groove that is fully inserted, and the limiting post 53 is locked in the notch formed at the end of the upper base 73 and the lower base 71. When the boss 52 and the limiting post 53 are fully connected, the fixing frame 72 is fully in contact with the cylinder 51. The slider 81 is not restricted by the downward pressure of the molten iron cylinder 5. Under the action of the second spring 82, the slider 81 is pushed out of the mounting groove 83 and abuts against the boss 52, fixing the molten iron cylinder 5 in the fixing component 7, so that the molten iron cylinder 5 can stably carry out subsequent operations.

[0040] The power assembly 6 includes a rotating base 61; the rotating base 61 includes two vertical plates and one horizontal plate and is arranged in a concave shape, and the outer sides of the two vertical plates are respectively fixedly connected to a rotating shaft 62; the rotating shaft 62 is rotatably connected to a fixed base 63; the fixed base 63 is fixedly connected to the bottom sides 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;

[0041] A protective component 64 is fitted onto the hydraulic rod of the hydraulic cylinder 65. The protective component 64 includes a fixed plate 641 and a rotating plate 642. The fixed plate 641 is fixed on the rotating seat 61. Both the fixed plate 641 and the rotating plate 642 include an arc plate and a straight plate. When the fixed plate 641 and the rotating plate 642 are closed, they form a cylinder that can be fitted onto the hydraulic rod of the hydraulic cylinder 65. The diameter of the cylinder is larger than the diameter of the hydraulic rod of the hydraulic cylinder 65. Asbestos can be added into the gap between them. The tops of the fixed plate 641 and the rotating plate 642 can be sealed with rubber rings to protect the hydraulic rod of the hydraulic cylinder 65 from damage caused by splashing molten iron. At the same time, the asbestos can reduce the temperature of the hydraulic rod and protect the seal of the hydraulic cylinder 65 from being burned and causing seal failure, resulting in oil leakage and damage to the hydraulic cylinder 65. Several alternately arranged hinges 643 are fixedly connected to the ends of the fixed plate 641 and the rotating plate 642 away from the straight plate.

[0042] When the molten iron cylinder 5 needs to be tilted to pour out the molten iron during operation, the hydraulic rod of the hydraulic cylinder 65 extends, pushing 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 rotate together with the rotating plate 4. The molten iron cylinder 5 is gradually tilted on the rotating plate 4 to pour out the molten iron. After the molten iron is completely poured out, the hydraulic rod of the hydraulic cylinder 65 retracts, retracting the rotating plate 4 until the rotating plate 4 is placed horizontally. The empty molten iron cylinder 5 is removed, and the next molten iron cylinder 5 filled with molten iron is fixed back on the rotating plate 4. The above operation is continued to realize the automatic pouring out of the molten iron.

[0043] An L-shaped locking rod 644 is fixedly mounted on the straight plate of the rotating plate 642; a core groove 646 is formed inside the end of the L-shaped locking rod 644 away from the rotating plate 642; the core groove 646 is in contact with and slidably connected to the lock cylinder 645; a slide rod 648 and a baffle 649 are provided on the lock cylinder 645; the slide rod 648 slides in the core groove 646 and is used to guide the lock cylinder 645; a spring 647 is fixedly connected between the lock cylinder 645 and the core groove 646; when the protection When component 64 is working, the fixed plate 641 and the rotating plate 642 need to be closed, the baffle 649 is pressed, and the lock cylinder 645 is pressed into the core groove 646. At this time, the fixed plate 641 and the rotating plate 642 are closed. When the baffle 649 is released, the lock cylinder 645 is pushed out of the core groove 646 under the action of the spring 647, so that the fixed plate 641 and the rotating plate 642 are closed, and the asbestos added between the fixed plate 641, the rotating plate 642 and the hydraulic rod of the hydraulic cylinder 65 tightly wraps the hydraulic rod.

[0044] An L-shaped telescopic column 95 is slidably connected inside the slide groove 21; the crossbar of the L-shaped telescopic column 95 is hollow; a drive plate 94 is fixedly connected to one end of the L-shaped telescopic column 95 inside the slide groove 21.

[0045] Motors 91 are fixedly installed on both sides of the fixed frame 2 at the ends away from the connecting seat 3 respectively; a lead screw 92 is fixedly connected to the output shaft of the motor 91; the lead screw 92 is threadedly connected to the drive plate 94, and a limit block 93 is fixedly connected to the end of the lead screw 92 away from the output shaft of the motor 91. The limit block 93 is used to restrict the movement of the L-shaped telescopic column 95, to prevent the L-shaped telescopic column 95 from disengaging from the lead screw 92 when moving, and to ensure that a section of the L-shaped telescopic column 95 is always in the slide groove 21; the lead screw 92 is used for the extension and retraction of the L-shaped telescopic column 95; when pouring molten iron, the motor 91 starts, and the output shaft of the motor 91 drives the lead screw 92 to rotate forward. The forward rotation of the lead screw 92 drives the drive plate 94, which is threadedly connected to the lead screw 92, to move linearly. The drive plate 94 drives the L-shaped telescopic column 95 to extend, increasing the support area of ​​the support column 1, so that the entire device will not overturn when the molten iron cylinder 5 pours molten iron, thus improving the safety of production;

[0046] Working principle: The molten iron cylinder 5, filled with molten iron, is transported and placed on the roller 42 on the rotating plate 4. Pushing the molten iron cylinder 5, it moves along the roller 42. When the molten iron cylinder 5 moves towards the fixed assembly 7, the boss 52 at the bottom of the molten iron cylinder 5 first contacts one end of the inclined surface of the slider 81. Continuing to push the molten iron cylinder 5, the boss 52 exerts downward pressure on the slider 81, causing the slider 81 to press into the mounting groove 83 along the second slide groove 43. Continuing to push the molten iron cylinder 5, until the boss 52 fully engages with the arc-shaped groove formed between the upper base 73 and the lower base 71, and the limiting post 53 is engaged in the notch formed at the end of the upper base 73 and the lower base 71. After the boss 52 and the limiting post 53 are fully aligned, the fixed frame 72... With the molten iron cylinder 5 in full contact, the slider 81 is not restricted by the downward pressure of the molten iron cylinder 5. Under the action of the second spring 82, the slider 81 is pushed out of the mounting groove 83 and abuts against the boss 52, fixing the molten iron cylinder 5 in the fixing assembly 7. When it is necessary to pour out the molten iron from the molten iron cylinder 5, the motor 91 starts. The output shaft of the motor 91 drives the lead screw 92 to rotate clockwise. The clockwise rotation of the lead screw 92 drives the drive plate 94, which is threaded to the lead screw 92, to move linearly. The drive plate 94 drives the L-shaped telescopic column 95 to extend, increasing the support area of ​​the support column 1, so that the entire device will not overturn when the molten iron cylinder 5 is poured out, improving production safety. The hydraulic rod of the hydraulic cylinder 65 extends, pushing the rotating plate 4 to rotate around the connecting seat 3. Due to the arrangement of the rotating seat 61 and the rotating shaft 62, the hydraulic cylinder 65 can rotate together with the rotating plate 4. The molten iron cylinder 5 gradually tilts on the rotating plate 4, pouring out the molten iron. After the molten iron is completely poured out, the hydraulic rod of the hydraulic cylinder 65 retracts, retracting the rotating plate 4 until the rotating plate 4 is placed horizontally and the empty molten iron cylinder 5 is removed. Because the hydraulic cylinder 65 is in contact with the high temperature of the molten iron cylinder 5 for a long time, the hydraulic rod of the hydraulic cylinder 65 becomes too hot, damaging the seal of the hydraulic cylinder 65 and causing oil leakage at the seal. This prevents the hydraulic cylinder 65 from working properly and requires frequent replacement. Therefore, a protective component 64 is set up. When the protective component 64 is working, the fixing plate 641 and the rotating... When plate 642 closes, pressing baffle 649 presses the lock cylinder 645 into the core groove 646. At this time, fixed plate 641 and rotating plate 642 are closed. When baffle 649 is released, the lock cylinder 645 is pushed out of the core groove 646 under the action of spring 647, realizing the closure of fixed plate 641 and rotating plate 642. This allows the asbestos added between fixed plate 641, rotating plate 642 and hydraulic rod of hydraulic cylinder 65 to tightly wrap the hydraulic rod, protecting the hydraulic rod of hydraulic cylinder 65 from damage caused by iron sparks when molten iron splashes. At the same time, asbestos can reduce the temperature of hydraulic rod, protect the seal of hydraulic cylinder 65 from being burned and causing seal failure, increase the service life of hydraulic cylinder 65 and reduce the frequency of replacement of hydraulic cylinder 65.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A ladle tilting cylinder guard characterized by: The system includes a support column (1), a fixed frame (2) fixedly connected to the top of the support column (1), a connecting seat (3) fixedly connected to one end of the fixed frame (2), a rotating plate (4) provided above the fixed frame (2), and the connecting seat (3) used to connect the fixed frame (2) and the rotating plate (4); a fixed component (7) fixedly connected to the upper surface of the rotating plate (4); the fixed component (7) is inserted into the molten iron cylinder (5); a locking component (8) is abutted at the bottom of the molten iron cylinder (5) away from the fixed component (7); the locking component (8) is fixedly connected to the rotating plate (4); a power component (6) is fixedly connected to the bottom of the fixed frame (2); the power component (6) is used to drive the rotating plate (4) to rotate; and a sliding groove (21) is opened in the crossbeams on both sides of the fixed frame (2). The fixing component (7) includes a lower base (71); the lower base (71) is a minor arc shape, and the lower surface of the lower base (71) is fixedly connected to the rotating plate (4); an upper base (73) is fixedly connected to the upper surface of the lower base (71); the upper base (73) is a semi-circular arc shape; the radial thickness of the upper base (73) is greater than the radial thickness of the lower base (71), and an arc-shaped groove is formed between the upper base (73) and the lower base (71); a semi-circular arc-shaped fixing frame (72) is fixedly connected to the upper surface of the upper base (73). The interior of the molten iron cylinder (5) is hollow, and an annular boss (52) is provided at the bottom of the molten iron cylinder (5); the annular boss (52) forms an arc-shaped groove with the upper base (73) and the lower base (71), and limit posts (53) are symmetrically provided on the boss (52). The locking assembly (8) includes a mounting groove (83); the interior of the mounting groove (83) is hollow, and one end of the mounting groove (83) that is fixedly connected to the rotating plate (4) is open and communicates with the sliding groove (43); two sets of springs (82) are fixedly connected inside the mounting groove (83), and the two sets of springs (82) are symmetrically arranged; a slider (81) is fixedly connected to the upper end of the spring (82); the slider (81) is in contact with the sliding groove (43) and slides.

2. The tilting cylinder guard for a hot metal car according to claim 1 wherein: The rotating plate (4) has a square groove (41); the inside of the square groove (41) is rotatably connected to several rollers (42) to facilitate the movement of the molten iron cylinder (5); the rotating plate (4) has a sliding groove (43) for the locking assembly (8) to move up and down.

3. The tilting cylinder guard for a hot metal car as set forth in claim 1, wherein: The power assembly (6) includes a rotating seat (61); the rotating seat (61) 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 to a rotating shaft (62); the rotating shaft (62) is rotatably connected to a fixed seat (63); the fixed seat (63) is fixedly connected to the bottom sides 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).

4. The tilting cylinder guard for a hot metal car as set forth in claim 3, wherein: The hydraulic cylinder (65) has a protective component (64) fitted on its hydraulic rod; the protective component (64) includes a fixed plate (641) and a rotating plate (642); both the fixed plate (641) and the rotating plate (642) include an arc plate and a straight plate; a number of alternately arranged hinges (643) are fixedly connected to the end of the fixed plate (641) and the rotating plate (642) away from the straight plate.

5. A protective device for the tilting cylinder of a molten iron car according to claim 4, characterized in that... An L-shaped locking rod (644) is fixedly installed on the straight plate of the rotating plate (642); a core groove (646) is opened inside the end of the L-shaped locking rod (644) away from the rotating plate (642); the core groove (646) is in contact with the lock cylinder (645) and is slidably connected; a slide rod (648) and a baffle (649) are provided on the core groove (645); the slide rod (648) slides in the core groove (646) and is used to guide the lock cylinder (645); a spring (647) is fixedly connected between the lock cylinder (645) and the core groove (646).

6. The iron car tilting cylinder protection device according to claim 5, characterized in that: The slide groove (21) is connected to an L-shaped telescopic column (95) in a sliding contact; the crossbar of the L-shaped telescopic column (95) is hollow; a drive plate (94) is fixedly connected to one end of the L-shaped telescopic column (95) inside the slide groove (21).

7. A protective device for a tilting cylinder of a molten iron car according to claim 6, characterized in that: A motor (91) is fixedly installed on one end of the fixed frame (2) away from the connecting seat (3); a lead screw (92) is fixedly connected to the output shaft of the motor (91); the lead screw (92) is threadedly connected to the drive plate (94); the lead screw (92) is used for the extension and retraction of the L-shaped telescopic column.

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