Dust removal trolley for replacing steel ladle refractory material

Abstract

The utility model discloses a dust removal trolley for replacing steel ladle refractory materials, which comprises two bottom beams, four vertical guide columns, four guide cylinders, a dust removal cover, a lifting oil cylinder and a telescopic pipe, the two bottom beams are respectively arranged on two steel rails through walking wheels, and the upper parts of two ends of each bottom beam are respectively provided with one vertical guide column; the lower ends of the four guide cylinders respectively sleeve the four vertical guide columns in a sliding manner, and the upper ends of the four guide cylinders are connected with the dust removal cover; a cylinder body of the lifting oil cylinder is connected with the bottom beam, a piston rod is connected with the dedusting cover or the guide cylinder, one end of the telescopic pipe is in butt joint with a dedusting pipeline in a workshop, and the other end is connected with the dedusting cover. The oil cylinder is used for adjusting the height of the dust removal cover, the dust removal cover is lifted to a high position in the translation process of the dust removal trolley and cannot collide with a steel ladle, the dust removal cover is lowered after the dust removal trolley is in place, and the smoke exhaust effect is guaranteed. The dust removal trolley can quickly and effectively remove dust generated when refractory materials of the steel ladle are replaced, the maintenance efficiency of the steel ladle is improved, and fire hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to a dust removal trolley used when replacing refractory materials of a ladle, belonging to the technical field of metallurgy. Background Art

[0002] The working environment of steelmaking and rolling workshops is poor, and there are harmful substances such as dust in the air. Therefore, the top of the steelmaking and rolling workshops is generally equipped with a smoke exhaust and dust removal system to remove the smoke and dust generated during the production process. However, the smoke exhaust and dust removal system installed on the top of the workshop has low efficiency in removing dust pollutants that are quickly generated locally when replacing the refractory materials of the ladle, and may not even play a dust removal role. The spread of these high-density dust pollutants in the workshop will not only seriously affect the health of the operators, cause many occupational diseases, but also may cause fires, posing a great threat to workshop safety. The existing solution is to set a dust hood above the maintenance platform, and the dust hood is connected to the dust removal pipeline of the workshop to remove a large amount of dust generated when replacing the refractory materials of the ladle and prevent the dust from spreading in the workshop. However, the height of the existing dust hood cannot be adjusted by itself, and in order to prevent the dust hood from colliding with the ladle placed on the maintenance platform in advance during the translation process, the lowest point of the dust hood must be higher than the highest point of the ladle, resulting in poor smoke exhaust effect, especially for some ladles with smaller heights, the distance between the dust hood and the ladle is large, and the smoke exhaust effect is very poor. Therefore, it is necessary to design a local high-efficiency dust removal device suitable for ladles of different heights.

[0003] In addition, the temperature of the ladle is very high after it is transported to the maintenance platform, and the refractory material is stuck to the ladle, making it impossible to carry out construction. The refractory material must be removed after the ladle cools down, which greatly prolongs the maintenance time of the ladle, reduces maintenance efficiency, and also increases the risk of fire. Utility Model Content

[0004] The utility model aims to address the drawbacks of the prior art and provide a dust removal trolley for replacing refractory materials of a ladle, so as to quickly and effectively remove dust generated when replacing refractory materials of the ladle, improve the maintenance efficiency of the ladle, purify the workshop environment, and eliminate fire hazards.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dust removal trolley for replacing refractory materials of a ladle comprises two bottom beams, four vertical guide columns, four guide cylinders, a dust hood, a lifting cylinder and a telescopic tube. The two bottom beams are respectively mounted on two rails through running wheels, and a vertical guide column is respectively mounted on the upper part of both ends of each bottom beam; the lower ends of the four guide cylinders are respectively slidably mounted on the four vertical guide columns, and the upper ends are respectively connected to the four corners of the dust hood; the lifting cylinder is placed vertically, the cylinder body of the lifting cylinder is connected to the bottom beam, the piston rod of the lifting cylinder is connected to the dust hood or the guide cylinder, one end of the telescopic tube is connected to a dust removal pipeline preset in the workshop, and the other end is connected to the air outlet of the dust hood.

[0007] The above-mentioned dust removal trolley for replacing refractory materials of the ladle, each guide cylinder is divided into two sections, the two sections of the guide cylinder are connected by a flange, and copper sleeves are installed inside both ends of the guide cylinder located at the lower section, and the copper sleeves are slidably mounted on the corresponding vertical guide columns.

[0008] The above-mentioned dust removal trolley for replacing refractory materials of the ladle has two lifting cylinders, which are respectively located on both sides of the dust removal cover, and the cylinder body of each lifting cylinder is connected to a bottom beam.

[0009] The above-mentioned dust removal trolley for replacing the refractory material of the ladle, the telescopic tube is connected to the dust removal pipeline preset in the workshop through a pipe joint, the pipe joint is fixed at one end of the telescopic tube and corresponds to the dust removal pipeline preset in the workshop, and one side of the pipe joint is fixedly connected to the bottom beam through a support rod.

[0010] The above-mentioned dust removal trolley for replacing the refractory material of the ladle, a ladle cooling device is provided on one side of the dust removal hood, and the ladle cooling device includes a liquid nitrogen tank, a hose, a swing arm, a swing arm cylinder and a nitrogen gun, the liquid nitrogen tank is fixed on the dust removal hood, one end of the swing arm is hinged to the dust removal hood, and the other end is equipped with a nitrogen gun, one end of the hose is connected to the nitrogen gun, and the other end is connected to the liquid nitrogen tank through a valve, the cylinder body of the swing arm cylinder is hinged to the guide cylinder, and the piston rod of the swing arm cylinder is hinged to the middle part of the swing arm.

[0011] The above-mentioned dust removal trolley for replacing refractory materials of the ladle has track cleaners at both ends of the bottom beam. The track cleaner is a rectangular plate, the upper end of which is fixedly connected to the bottom beam, and the lower end is provided with a notch matching the top of the rail.

[0012] The above-mentioned dust removal trolley used to replace the refractory material of the ladle, the walking wheels of each bottom beam include a driving wheel and a driven wheel, the driving wheel and the driven wheel are respectively installed at the lower part of the two ends of the bottom beam, the driving wheel is provided with a driving motor, the driving motor is fixed on the bottom beam and its output shaft forms a driving relationship with the driving wheel through a reducer.

[0013] The above-mentioned dust removal cart for replacing the refractory material of the ladle also includes an automatic positioning device, which includes a limit switch and a trigger block. The limit switch is installed on the side of the bottom beam through a bracket, and the signal output end of the limit switch is connected to the controller of the drive motor. The trigger block is fixed on the maintenance platform and corresponds to the limit switch.

[0014] The above-mentioned dust removal trolley for replacing refractory materials of a ladle has an audible and visual alarm installed on the bottom beam, and the audible and visual alarm is connected in parallel with the driving motor.

[0015] The dust removal trolley used for replacing refractory materials of the ladle has a cable drum installed on the bottom beam, and the driving motor is connected to the power supply through the cable wound on the cable drum.

[0016] The utility model uses a lifting cylinder to adjust the height of the dust hood. The dust hood is raised to a high position during the translation of the dust removal trolley, so that it will not collide with the ladle on the maintenance platform. After the dust removal trolley is in place, the dust removal hood is lowered to ensure the smoke exhaust effect. The dust removal trolley can quickly and effectively remove the dust generated when the refractory material of the ladle is replaced, improve the maintenance efficiency of the ladle, and eliminate the fire hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 yes Figure 1 A top view of

[0020] Figure 3 yes Figure 1 Left view of

[0021] Figure 4 It is a schematic diagram of the ladle cooling device in the expanded state;

[0022] Figure 5 It is a schematic diagram of the swing arm structure;

[0023] Figure 6 It is a schematic diagram of the internal structure of the guide cylinder;

[0024] Figure 7 It is a schematic diagram of the structure of the track cleaner, Figure 7 (a) is the main view, Figure 7 (b) is the left view.

[0025] The numbers in the figure are as follows: 1. bottom beam, 2. vertical guide column, 3. guide cylinder, 4. limit switch, 5. trigger block, 6. drive motor, 7. track cleaner, 8. driven wheel, 9. cable reel, 10. sound and light alarm, 11. driving wheel, 12. dust cover, 13. telescopic tube, 14. pipe joint, 15. support rod, 16. lifting cylinder, 17. copper sleeve, 18. liquid nitrogen tank, 19. hose, 20. swing arm, 21. swing arm cylinder, 22. nitrogen gun, 23. rail, 24. reinforcement rib, 25. notch. DETAILED DESCRIPTION

[0026] The utility model aims at the drawbacks of the existing dust removal equipment and provides a dust removal trolley for replacing the refractory material of the ladle. The dust removal trolley can quickly remove the dust generated when the refractory material of the ladle is replaced, thereby improving the efficiency of replacing the refractory material, reducing occupational diseases caused by dust pollution, and eliminating fire hazards.

[0027] See also Figure 1 The utility model mainly includes a bottom beam 1, a vertical guide column 2, a guide cylinder 3, a limit switch 4, a trigger block 5, a driving motor 6, a track cleaner 7, a driven wheel 8, a cable drum 9, an audible and visual alarm 10, a driving wheel 11, a dust cover 12, a telescopic tube 13, a pipe joint 14, a support rod 15, a lifting cylinder 16, a copper sleeve 17, a liquid nitrogen tank 18, a hose 19, a swing arm 20, a swing arm cylinder 21 and a nitrogen gun 22. Among them, the telescopic tube 13, the pipe joint 14 and the support rod 15 constitute an air duct connection mechanism; the liquid nitrogen tank 18, the hose 19, the swing arm 20, the swing arm cylinder 21 and the nitrogen gun 22 constitute a ladle cooling device; the limit switch 4, the trigger block 5 and the audible and visual alarm 10 constitute an automatic positioning device.

[0028] Two bottom beams 1 are placed above two rails respectively. The lower part of both ends of each bottom beam 1 is provided with a driving wheel 11 and a driven wheel 8 which are rollingly connected to the corresponding rails respectively. The driving wheel 11 is provided with a driving motor 6. The driving motor 6 is fixed on the bottom beam 1 and its output shaft forms a driving relationship with the driving wheel 11 through a reducer. Four vertical guide columns 2 are provided. A vertical guide column 2 is installed on the upper part of both ends of each bottom beam 1. The lower ends of the four guide cylinders 3 are slidably mounted on the four vertical guide columns 2 respectively, and the upper ends are connected to the four corners of the dust cover 12 respectively. Two lifting cylinders 16 are placed vertically and are respectively located on both sides of the dust cover 12. The cylinder bodies of the two lifting cylinders are respectively connected to the two bottom beams 1. The piston rods of the two lifting cylinders 16 are connected to the dust cover 12 or the guide cylinders 3. When the piston rods of the two lifting cylinders 16 are extended and retracted, the dust cover 12 can be driven to rise and fall to adapt to ladles of different heights.

[0029] Each guide cylinder 3 is divided into two sections, the upper and lower sections, which are connected by a flange. Copper sleeves 17 are installed inside both ends of the lower section of the guide cylinder 3, and the copper sleeves 17 are slidably connected to the vertical guide column 2.

[0030] A duct connection mechanism is provided on one side of the dust hood 12, and the duct connection mechanism includes a telescopic tube 13, a pipe joint 14, and a support rod 15. One side of the pipe joint 14 is connected to the bottom beam 1 through the support rod 15, so that the height of the pipe joint 14 is a fixed value. When the dust hood 12 moves to just above the ladle on the maintenance platform, the pipe joint 14 just docks with the dust removal pipeline preset in the workshop. One end of the telescopic tube 13 is connected to the pipe joint 14, and the other end is connected to the air outlet of the dust hood 12. When the lifting cylinder 16 drives the dust hood 12 to rise, the telescopic tube 13 is compressed, and when the lifting cylinder 16 drives the dust hood 12 to descend, the telescopic tube 13 is lengthened.

[0031] A ladle cooling device is provided on one side of the dust hood 12, and the ladle cooling device includes a liquid nitrogen tank 18, a hose 19, a swing arm 20, a swing arm cylinder 21 and a nitrogen gun 22. The liquid nitrogen tank 18 is fixed on the dust hood 12, one end of the swing arm 20 is hinged to the dust hood 12, and the other end is equipped with a nitrogen gun 22. One end of the hose 19 is connected to the nitrogen gun 22, and the other end is connected to the liquid nitrogen tank 18 through a valve. The cylinder body of the swing arm cylinder 21 is hinged to the guide cylinder 3, and the piston rod of the swing arm cylinder 21 is hinged to the middle part of the swing arm 20. When the piston rod of the swing arm cylinder 21 is extended, the swing arm 20 can be driven to swing upward, so that the nitrogen gun 22 is aimed at the ladle. When the piston rod of the swing arm cylinder 21 is retracted, the swing arm 20 can be driven to swing downward to a position close to the guide cylinder 3.

[0032] An automatic positioning device is installed on the bottom beam 1, and the automatic positioning device includes a limit switch 4, a trigger block 5 and an audible and visual alarm 10. The limit switch 4 is installed on the side of the bottom beam 1 through a bracket. The signal output end of the limit switch 4 is connected to the controller of the drive motor 6. The trigger block 5 is fixed on the maintenance platform and corresponds to the limit switch 4. When the dust cover 12 moves along the rail to the top of the ladle under the drive of the drive motor 6, the limit switch 4 is triggered by the trigger block 5 and outputs an in-position signal. After receiving the in-position signal output by the limit switch 4, the controller controls the drive motor 6 to stop running, and the dust cover 12 stops moving. At this time, the pipe joint 14 just docks with the dust removal pipeline preset in the workshop, thereby realizing the automatic connection between the dust cover 12 and the dust removal pipeline. The audible and visual alarm 10 is connected in parallel with the drive motor 6. A cable drum 9 is also installed on the bottom beam 1, and the drive motor 6 is connected to the power supply through the cable on the cable drum 9.

[0033] Track cleaners 7 are provided at both ends of the bottom beam 1 . The track cleaner 7 is a rectangular plate, the upper end of which is fixedly connected to the bottom beam 1 , and the lower end is provided with a notch 25 matching the top of the rail. A vertical reinforcing rib 24 is also provided in the middle of the track cleaner 7 .

[0034] The working process of the utility model is as follows:

[0035] In the initial state, the dust hood 12 is in a high position. When the ladle is transported to the position for replacing the refractory material, the drive motor 6 is energized, and the drive motor 6 drives the driving wheel 11 to rotate through the reducer, so that the dust removal trolley moves on the rails. At the same time, the sound and light alarm 10 sounds, and the cable drum 9 starts working. When the trigger block 5 on the maintenance platform contacts the limit switch 4 on the side of the bottom beam 1, the dust removal trolley stops running. At this time, the pipe joint 14 just docks with the dust removal pipeline preset in the workshop. After the dust removal trolley stops, the lifting cylinder 16 drives the dust removal hood 12 to descend, so that the lower edge of the smoke baffle on the side of the dust removal hood 12 is slightly lower than the top of the ladle, ensuring that the dust removal hood 12 can play its maximum role. After that, the ladle cooling device starts to work, the piston rod of the swing arm cylinder 21 extends, and the swing arm 20 is adjusted to a suitable position. The nitrogen gun 22 sprays liquid nitrogen at the refractory material of the ladle, and the liquid nitrogen rapidly cools the refractory material. The ladle cooling device can not only save working time and improve working efficiency, but also make the refractory material more brittle, which is helpful for the replacement of refractory materials. At the same time, liquid nitrogen also has the effect of inhibiting dust dispersion. After the dust removal trolley starts to work, negative pressure is generated inside the dust hood 12, and the dust and other harmful substances generated by the disassembly of the refractory material are sucked away by the dust removal pipeline preset in the workshop. After the refractory material is disassembled, the lifting cylinder 16 drives the dust hood 12 to rise to a high position, and then drives the motor 6 to reverse, and the dust removal trolley travels to the initial position. The slag on the rail will be removed from the rail by the track cleaner 7 during the driving process of the dust removal trolley.

[0036] The utility model can be moved to the site where the refractory material of the ladle is replaced, and the height of the dust removal hood can be adjusted so that the dust removal trolley is suitable for ladles of different specifications and heights, and the smoke baffle on the side of the dust removal hood is optimally positioned to achieve the best dust removal effect. After the dust removal trolley is adjusted to a good position, the ladle cooling device can effectively spray liquid nitrogen onto the refractory material, which quickly cools down and increases the brittleness of the refractory material, thereby improving work efficiency. During the working process, negative pressure is generated inside the dust removal hood, which can quickly and effectively remove the dust generated when the refractory material of the ladle is replaced, purify the workshop environment, reduce occupational diseases caused by dust pollution, and reduce fire hazards. The dust removal trolley can be driven to the initial position after use, without occupying the production space in the workshop.

[0037] An embodiment of the present utility model is as follows:

[0038] Bottom beam 1: total length 4600mm, total width 345mm, total height 511mm;

[0039] Vertical guide column 2: diameter 200mm, length 2320mm;

[0040] Copper sleeve 17: outer diameter 230mm, inner diameter 200mm;

[0041] Guide cylinder 3: inner diameter 225mm, length 1000mm;

[0042] Lifting cylinder 16: Model HSGF 140 / 84-1000;

[0043] Telescopic tube 13: metal telescopic tube or bellows;

[0044] Trigger block 5: length 250mm, width 191.5mm, height 50mm;

[0045] Drive motor with reducer 6: KA87-126.3 Power N=1.5 n=11r / min

[0046] Track cleaner 7: length 350mm, width 150mm, height 60mm;

[0047] Driven wheel 8: wheel diameter 380mm;

[0048] Driving wheel 11: wheel diameter 380mm;

[0049] Hose 19: Specification is 25-200-5000 B1+N-R1=B3+N-φ30*3 0°K1 S;

[0050] Liquid nitrogen tank 18: The tank body diameter is φ500, one side is connected to the hose, and the other side has a one-way valve;

[0051] The swing arm 20 is a welded part, having a length of 3080mm;

[0052] The nitrogen gun 22 is a purchased part;

[0053] Swing arm cylinder 21: Model: HSGF 80 / 46-650.

Claims

1. A dust removal trolley for replacing refractory materials of a ladle, characterized in that: The invention comprises two bottom beams (1), four vertical guide columns (2), four guide cylinders (3), a dust hood (12), a lifting cylinder (16) and a telescopic tube (13). The two bottom beams (1) are respectively mounted on two steel rails via running wheels. A vertical guide column (2) is respectively mounted on the upper part of both ends of each bottom beam (1). The lower ends of the four guide cylinders (3) are respectively slidably mounted on the four vertical guide columns (2), and the upper ends are respectively connected to the four corners of the dust hood (12). The lifting cylinder (16) is placed vertically, the cylinder body of the lifting cylinder (16) is connected to the bottom beam (1), the piston rod of the lifting cylinder (16) is connected to the dust hood (12) or the guide cylinder (3), and one end of the telescopic tube (13) is connected to a dust removal pipeline preset in the workshop, and the other end is connected to the air outlet of the dust hood (12).

2. The dust removal vehicle for replacing refractory materials of a ladle according to claim 1 is characterized in that: Each guide cylinder (3) is divided into two sections, the upper and lower sections, which are connected via flanges. Copper sleeves (17) are installed inside both ends of the lower guide cylinder (3), and the copper sleeves (17) are slidably mounted on the corresponding vertical guide column (2).

3. The dust removal vehicle for replacing refractory materials of a ladle according to claim 2 is characterized in that: Two lifting cylinders (16) are provided, and the two are respectively located on two sides of the dust removal cover (12), and the cylinder body of each lifting cylinder (16) is connected to a bottom beam (1).

4. A dust removal vehicle for replacing refractory materials of a ladle according to claim 3, characterized in that: The telescopic tube (13) is butt-jointed with a dust removal duct preset in the workshop via a pipe joint (14); the pipe joint (14) is fixed to one end of the telescopic tube (13) and corresponds to the dust removal duct preset in the workshop; one side of the pipe joint (14) is fixedly connected to the bottom beam (1) via a support rod (15).

5. A dust removal vehicle for replacing refractory materials of a ladle according to any one of claims 1 to 4, characterized in that: A ladle cooling device is provided on one side of the dust removal hood (12), and the ladle cooling device comprises a liquid nitrogen tank (18), a hose (19), a swing arm (20), a swing arm oil cylinder (21) and a nitrogen gun (22). The liquid nitrogen tank (18) is fixed on the dust removal hood (12); one end of the swing arm (20) is hinged to the dust removal hood (12), and the other end is equipped with the nitrogen gun (22); one end of the hose (19) is connected to the nitrogen gun (22), and the other end is connected to the liquid nitrogen tank (18) via a valve; the cylinder body of the swing arm oil cylinder (21) is hinged to the guide cylinder (3), and the piston rod of the swing arm oil cylinder (21) is hinged to the middle part of the swing arm (20).

6. A dust removal vehicle for replacing refractory materials of a ladle according to claim 5, characterized in that: Both ends of the bottom beam (1) are provided with track cleaners (7), and the track cleaner (7) is a rectangular plate, the upper end of which is fixedly connected to the bottom beam (1), and the lower end of which is provided with a notch (25) matching the top of the rail.

7. A dust removal vehicle for replacing refractory materials of a ladle according to claim 6, characterized in that: The travel wheels of each bottom beam (1) include a driving wheel (11) and a driven wheel (8), the driving wheel (11) and the driven wheel (8) being respectively mounted at the lower parts of both ends of the bottom beam (1), the driving wheel (11) being provided with a driving motor (6), the driving motor (6) being fixed on the bottom beam (1) and the output shaft of the driving motor (6) being in a driving relationship with the driving wheel (11) via a speed reducer.

8. The dust removal vehicle for replacing refractory materials of a ladle according to claim 7 is characterized in that: It also includes an automatic positioning device, which includes a limit switch (4) and a trigger block (5). The limit switch (4) is installed on the side of the bottom beam (1) through a bracket, and the signal output end of the limit switch (4) is connected to the controller of the drive motor (6). The trigger block (5) is fixed on the maintenance platform and corresponds to the limit switch (4).

9. The dust removal vehicle for replacing refractory materials of a ladle according to claim 8, characterized in that: An audible and visual alarm (10) is installed on the bottom beam (1), and the audible and visual alarm (10) is connected in parallel with the driving motor (6).

10. A dust removal vehicle for replacing refractory materials of a ladle according to claim 9, characterized in that: A cable drum (9) is installed on the bottom beam (1), and the drive motor (6) is connected to a power source via a cable wound on the cable drum (9).

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