A lifting ladle beam capable of quickly replacing fixed pulleys

Abstract

A steel ladle beam for lifting with a fixed pulley that can be replaced quickly belongs to the technical field of metallurgical lifting equipment and is used for rapid maintenance of the steel ladle beam for lifting. The technical solution is as follows: two pulley boxes are respectively welded and connected above the two ends of the beam body, the length direction of the pulley box is perpendicular to the length direction of the beam body, two rectangular pulley block support frames are respectively located in the two pulley boxes, the middle of the two pulley block support frames are rotatably connected to the two pulley boxes through a rotating shaft, and there are pins between the two pulley block support frames and the two pulley boxes for fixing and positioning, a fixed pulley is respectively installed at the upper and lower ends of the two pulley block support frames, and the lifting wire rope is respectively connected to the fixed pulley sets under the two pulley block support frames. The invention has a simple structure and is easy to use. The fixed pulley can be replaced without pulling out the drum wire rope, so that the time for replacing the fixed pulley is shortened to less than two hours, which greatly reduces the maintenance time.

Description

Technical Field

[0001] The invention relates to a beam for hoisting a molten steel ladle and belongs to the technical field of metallurgical lifting equipment. Background Art

[0002] In the metallurgical industry, the molten steel ladle beam is usually suspended by a casting crane, and the molten steel ladle and the hopper ear shaft are hooked by the plate hook of the molten steel ladle beam to realize the lifting and transfer of the liquid molten steel ladle and the hopper. Usually, the fixed pulley of the molten steel ladle beam is designed inside the box beam at both ends of the molten steel ladle beam, and the wire rope is directly passed through the fixed pulley of the molten steel ladle beam through the trolley drum, so that the molten steel ladle beam and the wire rope become a whole. However, when the bearing of the fixed pulley of the molten steel ladle beam is damaged and the fixed pulley wheel is damaged and needs to be replaced, it is necessary to pull out the wire rope from the fixed pulley of the molten steel ladle beam, replace the entire molten steel ladle beam, and then pass the wire rope through the fixed pulley again to complete the replacement of the molten steel ladle beam, and then carry out offline maintenance on the replaced molten steel ladle beam. The entire replacement process requires parking for 12 hours, which is not only time-consuming and labor-intensive, but also affects the production output of molten steel and the progress of upstream and downstream production processes. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a ladle beam for lifting molten steel, which can quickly replace the fixed pulley. The fixed pulley can be replaced without pulling out the drum wire rope, which greatly shortens the operation time of replacing the fixed pulley and avoids affecting the production output of molten steel and the progress of upstream and downstream production processes.

[0004] The technical solution to solve the above technical problems is:

[0005] A steel ladle beam for lifting fixed pulleys that can quickly replace fixed pulleys, comprises a beam body and a plate hook, wherein the two plate hooks are respectively installed below the two ends of the beam body, and the beam body comprises two pulley boxes, two pulley block support frames and four fixed pulleys, the two rectangular pulley boxes are respectively welded and connected above the two ends of the beam body, the length direction of the pulley boxes is perpendicular to the length direction of the beam body, the two rectangular pulley block support frames are respectively located in the two pulley boxes, the length direction of the pulley block support frames is parallel to the length direction of the pulley boxes, the middle of the two pulley block support frames are rotatably connected to the two pulley boxes through rotating shafts, the two pulley block support frames are fixed and positioned by pins between the two pulley block support frames and the two pulley boxes, a fixed pulley is respectively installed at the upper end and the lower end of the two pulley block support frames, and the lifting wire ropes are respectively connected to the fixed pulley sets below the two pulley block support frames.

[0006] The above-mentioned lifting ladle beam for molten steel with a fixed pulley that can be quickly replaced, the pulley box is composed of a box upright plate, a suspension rod, a rotating shaft, and a pin shaft. Two rectangular box upright plates are placed vertically and parallel, the plate surface of the box upright plate is perpendicular to the length direction of the beam body, the lower end of the box upright plate is welded to the upper surface of the beam body, the upper end of the box upright plate is connected to the suspension rod, there is a rotating shaft hole in the middle of the box upright plate, the rotating shaft is installed in the rotating shaft hole, there are pin shaft holes above and below the rotating shaft hole respectively, the two pin shaft holes are equidistant from the rotating shaft hole, and the two pin shafts are respectively inserted in the pin shaft holes.

[0007] The above-mentioned lifting ladle beam for molten steel that can quickly replace the fixed pulley, the pulley group support frame consists of two rectangular support plates and a positioning sleeve, the two support plates are placed vertically and parallel, the plate surface of the support plate is perpendicular to the length direction of the beam body, the positioning sleeve is welded and connected in the middle of the two support plates, the positioning sleeve is perpendicular to the support plates, the two support plates have fixed pulley mounting shaft holes at both ends respectively, the pulley shafts of the two fixed pulleys are installed at the two ends of the support plates through the mounting shaft holes, the two support plates have a support plate rotating hole and two support plate fixing holes in the middle respectively, the support plate rotating hole is opposite to the inner hole of the positioning sleeve, the support plate rotating hole and the support plate fixing hole respectively correspond to the rotating shaft hole and the pin shaft hole in the middle of the box body vertical plate.

[0008] The above-mentioned ladle beam for lifting molten steel with a fixed pulley that can be quickly replaced, has a detachable pulley protective cover installed outside the fixed pulley at the lower part of the pulley block support frame.

[0009] The beneficial effects of the present invention are:

[0010] The present invention adds pulley boxes at both ends of the cladding beam respectively, two fixed pulleys are installed in each pulley box, the two fixed pulleys are assembled into an integral component through a pulley block support frame, the two fixed pulleys and the pulley block support frame can complete rotation through a rotating shaft, the positions of the two fixed pulleys are converted, and the damaged fixed pulleys can be quickly replaced.

[0011] The present invention has a simple structure and is easy to use, and can achieve the purpose of completing the replacement of the fixed pulley without pulling out the winding wire rope, so that the operation time of replacing the fixed pulley is shortened to less than two hours, which greatly reduces the maintenance time and avoids affecting the production output of molten steel and the progress of upstream and downstream production processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 yes Figure 1 Side view of

[0014] Figure 3 It is a schematic diagram of the connection structure between the pulley block support frame and the fixed pulley;

[0015] Figure 4 yes Figure 3 Side view of.

[0016] The markings in the figure are as follows: beam body 1, plate hook 2, pulley box 3, pulley block support frame 4, fixed pulley 5, pulley shaft 6, pulley protection cover 7, box body vertical plate 8, hanging rod 9, rotating shaft 10, pin 11, support plate 12, connecting plate 13, support plate rotating hole 14, support plate fixing hole 15, seamless steel pipe 16. DETAILED DESCRIPTION

[0017] The invention is composed of a beam-wrapped body 1, a plate hook 2, a pulley box 3, a pulley block support frame 4, a fixed pulley 5, a pulley protective cover 7, a rotating shaft 10, and a pin shaft 11.

[0018] The figure shows that two plate hooks 2 are respectively installed below the two ends of the beam body 1, and two rectangular pulley boxes 3 are respectively welded above the two ends of the beam body 1. The length direction of the pulley box 3 is perpendicular to the length direction of the beam body 1. Two rectangular pulley block support frames 4 are respectively located in the two pulley boxes 3, and the length direction of the pulley block support frame 4 is parallel to the length direction of the pulley box 3. A fixed pulley 5 is respectively installed at both ends of the two pulley block support frames 4, and the hoisting wire rope is respectively connected to the fixed pulley 5 below the two pulley block support frames 4. In use, the lower fixed pulley 5 plays a force-supporting role in the hoisting of the wire rope, and the upper fixed pulley 5 is a spare part for replacement, but it can also play a guiding role for the wire rope to reduce the occurrence of wheel falling.

[0019] The two plate hooks 2 are steel plate structures, and the plate hooks 2 are composed of multiple layers of A3 steel plates, the multiple layers of steel plates are vertically overlapped, and multiple corresponding rivet holes are evenly distributed on the steel plates. Multiple rivets pass through the rivet holes horizontally to rivet the multiple layers of steel plates together, and the edges of the riveted multiple layers of steel plates are grooved and welded. The plate hook 2 with such a structure has good strength and will not break or be damaged.

[0020] As shown in the figure, the pulley box 3 is composed of a box body upright plate 8 and a suspension rod 9. Two rectangular box body upright plates 8 are placed vertically and parallel, and the plate surface of the box body upright plates 8 is perpendicular to the length direction of the beam body 1. The lower end of the box body upright plate 8 is welded to the upper surface of the beam body 1, and the upper end of the box body upright plate 8 is connected to the suspension rod 9, and the suspension rod 9 is connected to the ladle hoisting device.

[0021] The suspension rod 9 can be made of castings, forgings or welded parts, wherein the welded parts have the same structure as the plate hook 2, and multiple layers of A3 steel plates are vertically overlapped and riveted into one, and then welded together. The middle width of the suspension rod 9 is greater than the width at both ends.

[0022] The figure shows that there is a shaft hole in the middle of the box body vertical plate 8, and the shaft 10 is installed in the shaft hole. There are pin holes above and below the shaft hole. The distance between the two pin holes and the shaft hole is equal. Two pins 11 are inserted into the pin holes. The middle of the two pulley support frames 4 is rotatably connected to the box body vertical plate 8 through the shaft 10. After the two pulley support frames 4 are rotated into place, they are fixed and positioned by the pins 11 and the box body vertical plate 8.

[0023] As shown in the figure, the pulley block support frame 4 is composed of two rectangular support plates 12 and a positioning sleeve 13. The two support plates 12 are placed vertically and parallel, the plate surface of the support plate 12 is perpendicular to the length direction of the beam body 1, the positioning sleeve 13 is welded and connected in the middle of the two support plates 12, and the connecting plate 13 is perpendicular to the support plate 12 to form a frame structure.

[0024] As shown in the figure, fixed pulley mounting shaft holes are respectively provided at both ends of the two support plates 12, and the pulley shafts 6 of the two fixed pulleys 5 are mounted at both ends of the support plates 12 through the mounting shaft holes. Support plate rotation holes 14 and two support plate fixing holes 15 are respectively provided in the middle of the two support plates 12, and the support plate rotation holes 14 are opposite to the inner holes of the positioning sleeves 13, and the support plate rotation holes 14 and the support plate fixing holes 15 respectively correspond to the rotating shaft holes and the pin shaft holes in the middle of the box body vertical plates 8. Since the distances between the two pin shaft holes and the rotating shaft holes are equal, the distances between the two support plate fixing holes 15 and the support plate rotation holes 14 are also equal. When the pulley block support frame 4 rotates, the two support plate fixing holes 15 can be exchanged to fix the pin shaft 11.

[0025] As shown in the figure, a detachable pulley protective cover 7 is installed outside the fixed pulley 5 at the bottom of the pulley block support frame 4.

[0026] As shown in the figure, a seamless steel pipe 16 is added to the box structure of the beam cladding body 1 to increase the strength and safety of the beam cladding body 1 .

[0027] The use process of the present invention is as follows:

[0028] When the beam-wrapped body 1 works normally, the hoisting wire rope is connected to the fixed pulley 5 below the pulley block support frame 4 between the two pulley boxes 3, and the fixed pulley 5 below plays a force-supporting role in the hoisting of the wire rope.

[0029] When the bearing of the fixed pulley 5 at the bottom is damaged and the fixed pulley wheel is damaged and needs to be replaced, the pulley protective cover 7 is removed, the drum wire rope is loosened to an appropriate length, the two pin shafts 11 on the box vertical plate 8 of the pulley box 3 on the side of the fixed pulley 5 that needs to be replaced are removed, the pulley block support frame 4 is rotated to make the pulley block support frame 4 rotate around the rotating shaft 10, and the pulley block support frame 4 drives the two fixed pulleys 5 to rotate, and the fixed pulley 5 that needs to be replaced at the bottom is rotated to the top, and the fixed pulley 5 at the top is rotated to the bottom, completing the position conversion of the damaged fixed pulley. During the rotation process, the wire rope slides in the pulley grooves of the two fixed pulleys 5 without pulling out the wire rope.

[0030] After the two fixed pulleys 5 are replaced, the two pin shafts 11 are respectively passed through the two pin shaft holes on the box vertical plate 8 of the pulley box 3 and the two support plate fixing holes 15 of the support plate 12 of the pulley block support frame 4 to fix the pulley block support frame 4 to the pulley box 3, and finally the pulley protective cover 7 is installed to complete the replacement of the fixed pulley 5 without pulling out the drum wire rope.

[0031] An embodiment of the present invention is as follows:

[0032] The length of the box body upright plate 8 of the pulley box body 3 is 2700mm and the width is 1500mm.

[0033] The length of the suspension rod 9 is 1900 mm, the width of the rectangular cross section in the middle is 300 mm, the thickness is 200 mm, and the width of the rectangular cross section at both ends is 250 mm, and the thickness is 200 mm;

[0034] The support plate 12 of the pulley block support frame 4 has a length of 2200 mm and a width of 600 mm.

[0035] The length of the positioning sleeve 13 is 806 mm, the outer diameter is 300 mm, and the inner diameter is 240 mm;

[0036] The diameter of the fixed pulley 5 is 800 mm;

[0037] The diameter of the rotating shaft 10 is 140 mm and the length is 700 mm;

[0038] The diameter of the pin 11 is 120 mm and the length is 800 mm.

Claims

1. A ladle beam for lifting a molten steel ladle capable of quickly replacing a fixed pulley, comprising a beam body (1) and a plate hook (2), wherein two plate hooks (2) are respectively installed below the two ends of the beam body (1), and characterized in that: The utility model comprises two pulley boxes (3), two pulley block support frames (4) and four fixed pulleys (5). The two rectangular pulley boxes (3) are respectively welded and connected above the two ends of the beam-wrapped body (1). The length direction of the pulley boxes (3) is perpendicular to the length direction of the beam-wrapped body (1). The two rectangular pulley block support frames (4) are respectively located in the two pulley boxes (3). The length direction of the pulley block support frames (4) is parallel to the length direction of the pulley boxes (3). The middle of the two pulley block support frames (4) is rotatably connected to the two pulley boxes (3) through a rotating shaft (10). There is also a pin shaft (11) between the two pulley block support frames (4) and the two pulley boxes (3) for fixing and positioning. A fixed pulley (5) is respectively installed at the upper end and the lower end of the two pulley block support frames (4). The hoisting wire rope is respectively connected to the fixed pulleys (5) below the two pulley block support frames (4).

2. The ladle beam for lifting molten steel with a fixed pulley that can be quickly replaced according to claim 1 is characterized in that: The pulley box (3) is composed of a box body upright plate (8), a suspension rod (9), a rotating shaft (10), and a pin shaft (11). The two rectangular box body upright plates (8) are placed vertically and parallel to each other. The plate surface of the box body upright plates (8) is perpendicular to the length direction of the beam body (1). The lower end of the box body upright plate (8) is welded to the upper surface of the beam body (1). The upper end of the box body upright plate (8) is connected to the suspension rod (9). A rotating shaft hole is provided in the middle of the box body upright plate (8). The rotating shaft (10) is installed in the rotating shaft hole. Pin shaft holes are provided above and below the rotating shaft hole respectively. The distances between the two pin shaft holes and the rotating shaft hole are equal. The two pin shaft holes (11) are respectively inserted into the pin shaft holes.

3. The ladle beam for lifting molten steel with a fixed pulley capable of being quickly replaced according to claim 1 is characterized in that: The pulley block support frame (4) is composed of two rectangular support plates (12) and a positioning sleeve (13). The two support plates (12) are placed vertically and parallel, and the plate surface of the support plate (12) is perpendicular to the length direction of the beam-wrapping body (1). The positioning sleeve (13) is welded and connected in the middle of the two support plates (12). The positioning sleeve (13) is perpendicular to the support plates (12). The two ends of the two support plates (12) are respectively provided with fixed pulley mounting shaft holes. The pulley shafts (6) of the two fixed pulleys (5) are mounted on the two ends of the support plates (12) through the mounting shaft holes. The middle of the two support plates (12) are respectively provided with a support plate rotation hole (14) and two support plate fixing holes (15). The support plate rotation hole (14) is opposite to the inner hole of the positioning sleeve (13). The support plate rotation hole (14) and the support plate fixing hole (15) respectively correspond to the rotation shaft hole and the pin shaft hole in the middle of the box body vertical plate (8).

4. The ladle beam for lifting molten steel with a fast-changing fixed pulley according to claim 1, characterized in that: A detachable pulley protective cover (7) is installed outside the fixed pulley (5) at the bottom of the pulley block support frame (4).

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