A sintering ring cooling machine trolley quick replacement method

Abstract

The present application relates to sintering ring cooling machine spare parts maintenance replacement technical field, specifically discloses a kind of sintering ring cooling machine trolley quick replacement method, crane, hanging steel wire rope and hand-operated hoist cooperate, and ring cooling machine trolley is positioned and locked dead. Using oxygen lance is melted cutting to the trolley axle, and the axle of both sides trolley is cut off;Using oxygen lance generates 3600 ℃ high temperature to carry out axial punching to the long axle section of trolley axle, then local water cooling, using the principle of thermal expansion and contraction of trolley axle is taken out;With the aid of special lifting tooling realizes the positioning and transshipment of trolley axle waste and hydraulic jack, solves the difficult problem of repeated displacement of hydraulic jack, realizes the quick separation of trolley axle and trolley and the quick, efficient replacement of trolley, the method is convenient and practical, can greatly reduce operation hours, reduce maintenance link, reduce safety risk.

Description

Technical Field

[0001] This invention relates to the field of spare parts repair and replacement technology for sintering ring coolers, specifically to a method for quick replacement of sintering ring cooler trolleys. Background Technology

[0002] The sintering ring cooler is a key piece of equipment in sintering production, primarily used to cool the high-temperature sinter from the sintering machine using forced-air cooling, and finally transporting the cooled sinter to subsequent equipment. The ring cooler trolley is the main component for carrying and transporting the sinter. Because the ring cooler trolley is frequently subjected to uneven heating and cooling and continuous alternating heavy loads, the design requires the ring cooler trolley axle to have an interference fit with the inner bore of the sliding bearing. Since the ring cooler trolley axle and sliding bearing will experience periodic wear and failure, the trolley axle and related components must be replaced periodically to ensure the continuous and stable operation of the ring cooler. Currently, the trolley replacement process uses a complete axle disassembly method, which is time-consuming and unpredictable, making it difficult to carry out during regular maintenance. If the trolley malfunctions during ring cooler operation, the lengthy replacement time will cause prolonged shutdown of the sintering production line, severely hindering stable sintering production.

[0003] The existing method for replacing the sintering ring cooler trolley has several drawbacks. During disassembly, the friction generated by the trolley holes against the four keys results in a large contact area. Furthermore, the interference fit between the trolley shaft and the sliding bearing leads to high frictional resistance and excessively long disassembly time. The repeated repositioning of the hydraulic jacks using a hand-operated hoist during trolley shaft replacement is inefficient. Regular maintenance schedules are difficult to implement, and repairs for trolley shaft damage can take over 40 hours, severely hindering the smooth operation of the sintering ore production line. Therefore, a rapid replacement method for the sintering ring cooler trolley is needed to address the problem of long repair times and prolonged downtime affecting production stability caused by existing trolley malfunctions. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a method for quick replacement of sintering ring cooler trolleys to meet the needs of on-site production.

[0005] The technical solution adopted by this invention to solve its technical problem is: a method for quick replacement of a sintering ring cooler trolley, comprising the following steps:

[0006] S1. After the material is discharged from the upper surface of the ring cooler trolley, the machine is stopped, the power is cut off by all three parties, and a sign is posted, making it ready for maintenance.

[0007] S2. Remove the dust cover by gas cutting and hoisting, and use a hand chain hoist to prevent the trolley from falling.

[0008] S3. Remove grate plate one, grate plate two, grate plate three, and grate plate four;

[0009] S4. Use tooling to cut and lift out the long axis area and the short axis area;

[0010] S5. Using welding positioning plate one in conjunction with tooling and hydraulic jack one, push out the left short shaft section of the long shaft; using welding positioning plate two in conjunction with tooling and hydraulic jack two, push out the right short shaft section of the short shaft.

[0011] S6. Use an oxygen blowing rod to melt and drill holes in the long shaft area with liquid oxygen, and use the tooling and hydraulic jack one to push out the right side of the long shaft section; use an oxygen blowing rod to melt and drill holes in the short shaft area with liquid oxygen, and use the tooling and hydraulic jack two to push out the left side of the short shaft section.

[0012] S7. Using a crane and a hand-operated hoist, place the new trolley of the annular cooler into the original position of the old trolley; use a hand-operated hoist to implement safety measures to prevent the new trolley from falling.

[0013] S8. First, insert the sliding bearing 1 into the inner hole of the slewing frame and tighten it with screws. Using a crane-suspended copper rod to tap the assembly of the new parts: long shaft, retaining ring 1, positioning sleeve 1, and crank wheel assembly, insert them from right to left through the right side hole of the trolley, passing through the left side of the right side support plate of the trolley. Then, insert key 1 and key 2 into the keyway of the long shaft and reset retaining ring 1 and cotter pin 1. Similarly, first, insert the sliding bearing 2 into the inner hole of the slewing frame and tighten it with screws. Insert the assembly of the new parts: short shaft, retaining ring 2, positioning sleeve 2, cotter pin 2, and screw 2 from left to right through the right side hole of the trolley, passing through the right side of the left side support plate of the trolley. Then, insert key 3 and key 4 into the keyway of the short shaft and reset retaining ring 2 and cotter pin 2. This completes the replacement of the trolley shaft.

[0014] S9. Remove the safety anti-fall measures for the trolley and reposition the dust cover by hoisting and welding.

[0015] Specifically, the tooling in step S4 includes a front support, a rear support, a rotating shaft, and a pull rope forming an A-shaped frame; the front support and the rear support are each supported and reinforced by a support one and a support two; the bearing seat support is connected to the front support by screws, and the front support is connected to bearing seat one, bearing seat two, bearing seat three, and bearing seat four by screws.

[0016] Specifically, the inner hole of bearing seat three passes through the shaft end of the crank handle and is axially positioned by a shaft clip; similarly, the left shaft diameter of the crank handle is keyed to the inner hole of the pinion and axially positioned by a shaft clip; bearing seat one and bearing seat two are respectively installed on both sides of the rotating shaft, and there are wire rope baffle structures on both sides of the middle of the rotating shaft. The large gear and ratchet are connected to the rotating shaft by a key and are axially positioned by a shaft clip. The two bearing seats four and the bearing seat bracket are connected to the front bracket by screws. The shaft sections at both ends of the pawl each pass through a bearing seat four. The lowering, lifting and suspending of the hoisted load are achieved by the counterclockwise and clockwise rotation of the hand crank handle and the action of the pawl.

[0017] Specifically, the steps of cutting and lifting out the long axis region and the short axis region in step S4 are as follows: the lifting lugs of the C region of the long axis are welded together with ropes using a tool; the two sides of the C region of the long axis are cut successively using an oxygen blower; after the cutting is completed, the waste material in the C region is lifted out using the tool; similarly, the tool is moved above the E region of the short axis to complete the lifting out of the waste material in the E region; the crank wheel on the right side of the D region on the outside of the long axis is fixed by a hand chain hoist; then the D region is cut using an oxygen blower; and the crank wheel is removed by pulling the hand chain hoist.

[0018] Specifically, the step of ejecting the short shaft segment after cutting the long shaft and short shaft in step S5 is as follows: Weld positioning plate one to the left section of the right long shaft segment of the long shaft, and use tooling to attach hydraulic jack one and slowly lower it until the base of hydraulic jack one is placed on positioning plate one; control hydraulic jack one to extend and eject the left short shaft segment of the long shaft; similarly, weld positioning plate two to the right section of the left long shaft segment of the short shaft, and place the base of hydraulic jack two on positioning plate two; control hydraulic jack two to extend and eject the right short shaft segment of the short shaft.

[0019] Specifically, the step of ejecting the long shaft segment of the cut long shaft and short shaft in step S6 is as follows: Use an oxygen blowing rod to melt and drill holes in region E of the long shaft with liquid oxygen. When the hole depth reaches 2 / 3 of the shaft segment length, spray water to cool region G of the long shaft. Using a tooling fixture, quickly turn the hydraulic jack one around, quickly place the hydraulic jack one in position, and control the extension of the hydraulic jack one to eject the right side of the long shaft segment. Similarly, use an oxygen blowing rod to melt and drill holes in region F of the short shaft with liquid oxygen. When the hole depth reaches 2 / 3 of the shaft segment length, spray water to cool region H of the short shaft. Using a tooling fixture, quickly turn the hydraulic jack two around and place it in position, and control the extension of the hydraulic jack two to eject the left side of the long shaft segment.

[0020] Specifically, the cutting in step S4 is a melting cutting process, in which an oxygen blowing rod is used to melt and cut the C and D regions of the long axis and the E region of the short axis, respectively, to quickly divide the long axis and the short axis into long axis segments and short axis segments.

[0021] Specifically, for the melting, cutting, and drilling of the oxygen blowing rod, the oxygen pressure reducing valve needs to be adjusted to a pressure value of 0.85-0.92 MPa, the flame color needs to be dark yellow, and the flame temperature needs to reach 3600℃. During the melting process on the melting trolley shaft, the oxygen blowing rod needs to be replaced in a timely manner to ensure the continuity of melting.

[0022] Specifically, in step S4, the oxygen blowing rod is melted and the hole is drilled until the hole depth reaches 2 / 3 of the shaft length. Water is sprayed for cooling, with an average water temperature of 23°C and a spraying time of 5 minutes. The hydraulic jack is then quickly placed in position.

[0023] The present invention has the following beneficial effects:

[0024] The sintering ring cooler trolley quick replacement method designed in this invention cuts the long shaft and short shaft of the trolley into two sections each, and reduces the number of key connections in each section from four to two, effectively reducing the contact area and frictional resistance between the keys and the keyway in the inner hole of the trolley.

[0025] The sintering ring cooler trolley quick replacement method designed in this invention involves melting the long shaft and short shaft with liquid oxygen to make holes, and then spraying water to cool the long shaft and short shaft. The shaft diameter shrinkage deformation caused by the thermal expansion and rapid cooling of the trolley shaft is utilized to effectively reduce the frictional resistance between the cylindrical surface of the trolley shaft and the inner hole of the trolley shaft and the sliding bearing, and significantly shorten the time for removing the trolley shaft.

[0026] The sintering ring cooler trolley quick change method designed in this invention uses special tooling to quickly transport the shaft waste and hydraulic jacks. The position of the hydraulic jacks does not need to be moved horizontally; only one turn is required to complete the removal of the ring cooler trolley shaft, effectively shortening the positioning time of the hydraulic jacks.

[0027] The sintering ring cooler trolley quick replacement method designed in this invention uses liquid oxygen as a combustion aid and employs oxygen blowing rods for cutting and drilling. The oxygen source is stable, eliminating the need for an oxygen generator; the oxygen supply is sufficient, allowing for continuous operation; the high oxygen content allows the torch temperature to reach over 3600℃, improving the speed and efficiency of cutting and drilling.

[0028] The sintering ring cooler trolley quick replacement method designed in this invention adopts a special hoisting tooling structure that is simple, reliable in principle, and lightweight, which greatly improves the efficiency of transporting trolley axle waste and hydraulic jacks during the trolley axle replacement process.

[0029] The sintering ring cooler trolley quick replacement method designed in this invention shortens the trolley axle replacement time from 40 hours to 14 hours, allowing construction to proceed during normal scheduled maintenance periods. The emergency repair time is significantly shortened, reducing the downtime risk of the ring cooler and creating favorable conditions for the continuous and efficient production of sintering ore production lines. Attached Figure Description

[0030] Figure 1 This is a top view of the sintering ring cooler of the present invention.

[0031] Figure 2 This is a top view of the sintering ring cooler trolley of the present invention.

[0032] Figure 3 yes Figure 2 Sectional view along the AA direction.

[0033] Figure 4 The original sintering ring cooling machine trolley axle removal steps Figure 1 .

[0034] Figure 5 The original sintering ring cooling machine trolley axle removal steps Figure 2 .

[0035] Figure 6 This is a schematic diagram of the removal structure of the original old trolley.

[0036] Figure 7 This is a schematic diagram of the original new trolley's positioning structure.

[0037] Figure 8 This is a schematic diagram of the original new trolley's trolley shaft reset structure.

[0038] Figure 9 This is a schematic diagram of the structure for cutting and removing the old trolley axle of the present invention.

[0039] Figure 10 This is a schematic diagram of the structure of removing the short shaft section of the trolley axle according to the present invention.

[0040] Figure 11 This is a schematic diagram of the structure of the trolley shaft long section of the present invention, which uses liquid oxygen melting to drill holes.

[0041] Figure 12 This is a schematic diagram of the structure of the long shaft section of the trolley axle of the present invention.

[0042] Figure 13 This is a schematic diagram of the tooling structure of the present invention. Figure 1 .

[0043] Figure 14 This is a schematic diagram of the tooling structure of the present invention. Figure 1 .

[0044] Figure 15 yes Figure 14 A schematic diagram of the structure of the B-direction pawl and ratchet.

[0045] In the diagram: 1-Ring Cooler Trolley; 2-Slewing Frame; 3-Rocker Arm Wheel Assembly; 4-Pressure Plate 1; 5-Screw 1; 6-Positioning Sleeve 1; 7-Sliding Bearing 1; 8-Positioning Ring 1; 9-Key 1; 10-Long Shaft; 11-Key 2; 12-Retaining Ring 1; 13-Cotter Pin 1; 14-Pressure Plate 2; 15-Screw 2; 16-Sliding Bearing 2; 17-Positioning Ring 2; 18-Key 3; 19-Short Shaft; 20-Key 4; 21-Retaining Ring 2; 22-Cotter Pin 2; 23-Grate Plate 1; 24-Grate Plate 2; 25-Grate Plate 3; 26-Grate Plate 4; 27-Dust Cover; 28-Positioning Plate 1; 29-Positioning Plate 2; 30-Hydraulic Jack 1; 31-Hydraulic Jack 2;

[0046] 34-Tooling; 3401-Front bracket; 3402-Rear bracket; 3403-Spindle; 3404-Brace support one; 3405-Brace support two; 3406-Bearing housing bracket; 3407-Bearing housing one; 3408-Bearing housing two; 3409-Bearing housing three; 3410-Pin gear; 3411-Large gear; 3412-Handle; 3413-Pawl; 3414-Ratchet; 3415-Bearing housing four; 3416-Pull rope; 3417-Spindle; 3418-Wire rope; 3419-Hook. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0048] Example 1:

[0049] The working principle of the sintering ring cooler trolley 1 is as follows: Figure 1 As shown in the top view of the sintering ring cooler, the hot sintered ore from the sintering machine unloading trolley falls evenly onto the upper surface of the ring cooler trolley 1 at point B. The ring cooler trolley 1 rotates clockwise with the ring cooler's rotating frame 2 to point C, where the sintered ore is cooled. At point C, the ring cooler is equipped with a curved track device, and the trolley's crank arm is in the released state. Under gravity, the ring cooler trolley 1 rotates 90°, unloading the sintered ore onto the plate feeder below point C. The sintered ore is then transported by belt to the subsequent equipment at point D. Under the action of the internal reset rollers, the trolley's crank arm gradually resets after passing through the curved track area, and the ring cooler trolley returns to a horizontal position, repeating the above process.

[0050] like Figure 3As shown, the dust cover 27 is separate from the annular cooler trolley 1 and is suspended above the trolley; the sliding bearing 7 is screwed to the rotating frame 2, and the long shaft 10 is rotatedly connected to the sliding bearing 7; the trolley and the long shaft 10 are connected by keys 9 and 11; the trolley and crank arm wheel assembly 3 are axially positioned by positioning sleeve 6, positioning ring 8, retaining ring 12, cotter pin 13, pressure plate 4, and screw 5, and the crank arm wheel assembly 3 is keyed to the long shaft 10. The grate plates 23, 24, 25, and 26 are fixed to the upper surface of the annular cooler trolley 1 with screws. Similarly: the sliding bearing 16 is screwed to the rotating frame 2, and the short shaft 19 is rotated to the sliding bearing 16; the trolley is connected to the short shaft 19 by key 18 and key 20; the trolley and crank arm wheel assembly 3 are axially positioned by positioning sleeve 6, positioning ring 17, retaining ring 14, cotter pin 22, pressure plate 14, and screw 15.

[0051] Example 2:

[0052] like Figures 4-8 As shown, the existing trolley replacement method includes the following steps:

[0053] 1. After the material is discharged from the upper surface of the ring cooler trolley 1, the machine is stopped, the power is cut off by all three parties, and a sign is hung, making it ready for maintenance.

[0054] 2. Remove the dust cover 27 by gas cutting and hoisting, and use a hand chain hoist to prevent the trolley from falling.

[0055] 3. Remove the first grate (23), the second grate (24), the third grate (25), and the fourth grate (26).

[0056] 4. Remove the cotter pin 13 and retaining ring 12 in sequence; remove the screw on the right side of the sliding bearing 7; weld the positioning plate 28 to the right side of the support plate in the middle of the trolley; implement safety measures to prevent the hydraulic jack 31 from falling using a hand-operated hoist; place the base of the hydraulic jack 31 on the positioning plate 28, control the extension of the hydraulic jack 31, and push the long shaft 10, key 9, key 2 11, retaining ring 12, sliding bearing 7, positioning sleeve 6, and crank wheel assembly 3 together to the right a certain distance; Figure 4 As shown.

[0057] 5. Pull the chain hoist to raise hydraulic jack 2 (31) to the upper position and remove positioning plate 2 (29) using an oxy-acetylene torch; weld it to the right support plate of the annular cooler trolley 1; similarly, pull the chain hoist to place the base of hydraulic jack 1 (30) on positioning plate 1 (28), control the extension of hydraulic jack 1 (31), and push the long shaft 10, key 1 (9), key 2 (11), retaining ring 12, sliding bearing 7, positioning sleeve 6, and crank wheel assembly 3 together to the right until they are all pushed out. Figure 5 As shown.

[0058] Similarly: remove cotter pin 22 and retaining ring 21 in sequence; remove the screw on the left side of sliding bearing 16; weld positioning plate 29 to the left side of the support plate in the middle of the trolley; implement safety anti-fall measures for hydraulic jack 31 using a hand-operated hoist, place the base of hydraulic jack 31 on positioning plate 29, control the extension of hydraulic jack 31, and push the short shaft 19, key 18, key 20, retaining ring 17, sliding bearing 16, positioning sleeve, crank wheel assembly 3, baffle, and screw together to the left a certain distance; Figure 4 As shown; use a hand-operated hoist to lift hydraulic jack 2 31 to the upper position to make room, and use an oxy-acetylene torch to remove positioning plate 29; weld it to the left support plate of the annular cooler trolley 1; similarly, use a hand-operated hoist to place the base of hydraulic jack 2 31 on positioning plate 29, control the extension of hydraulic jack 2 31, and push the short shaft 19, key 3 18, key 4 20, retaining ring 2 17, sliding bearing 2 16, positioning sleeve, baffle, and screws to the left together until they are all pushed out, as shown. Figure 5 As shown.

[0059] 6. Remove the fall protection measures and use a crane to remove the old trolley of the annular cooler. Figure 6 As shown.

[0060] 7. Using a crane and a hand-operated hoist, lower the new trolley of the annular cooling unit into the original position of the old trolley; implement safety measures to prevent the new trolley from falling using a hand-operated hoist, such as... Figure 7 As shown.

[0061] 8. First, insert the sliding bearing 7 into the inner hole of the rotating frame 2 and tighten it with screws. Using a crane to suspend a copper rod and tap it, insert the assembled new parts: long shaft 10, retaining ring 12, positioning sleeve 6, and crank wheel assembly 3 from right to left through the right side hole of the trolley, passing through the left side of the right side support plate of the trolley; then, insert key 9 and key 11 into the keyway of the long shaft and reset retaining ring 12 and cotter pin 13. Similarly, first, insert the sliding bearing 16 into the inner hole of the rotating frame 2 and tighten it with screws. Insert the assembled new parts: short shaft 19, retaining ring 21, positioning sleeve 2, cotter pin 22, and screw 15 from left to right through the right side hole of the trolley, passing through the right side of the left side support plate of the trolley; then, insert key 3 18 and key 4 20 into the keyway of the short shaft and reset retaining ring 21 and cotter pin 22. This completes the replacement of the trolley shaft. Figure 8 As shown.

[0062] 9. Remove the safety anti-fall measures for the trolley and reposition the dust cover 27 by hoisting and welding.

[0063] The original method for replacing the bogie axle has several drawbacks. During the disassembly process, the large contact area is caused by the four key connections in the bogie hole. The bogie axle and the sliding bearing have an interference fit, resulting in high frictional resistance and excessively long disassembly time. The bogie axle replacement process involves repeatedly moving the hydraulic jack using a hand-operated hoist, which is inefficient. It is difficult to carry out the work during the normal scheduled maintenance period. Once the bogie axle is damaged, the emergency repair time is more than 40 hours, which seriously restricts the smooth operation of the sintering ore production line.

[0064] Example 3:

[0065] To address this issue and significantly reduce the trolley axle replacement time, a rapid trolley replacement method for the sintering ring cooler is proposed. The replacement method is as follows:

[0066] 1. After the material is discharged from the upper surface of the ring cooler trolley 1, the machine is stopped, the power is cut off by all three parties, and a sign is hung, making it ready for maintenance.

[0067] 2. Remove the dust cover 27 by gas cutting and hoisting, and use a hand chain hoist to prevent the trolley from falling.

[0068] 3. Remove the first grate (23), the second grate (24), the third grate (25), and the fourth grate (26).

[0069] 4. Using tool 34, cut and lift out areas 10 of the long shaft and 19 of the short shaft. Use the tool to connect the lifting lugs at area C of the long shaft 10 with ropes. Use an oxygen lance to cut both sides of area C of the long shaft 10. After cutting, use tool 34 to lift out the waste material from area C. Similarly, move tool 34 above area E of the short shaft 19 to lift out the waste material from area E. Use a hand chain hoist to fix the crank wheel on the right side of area D on the outside of the long shaft 10. Then use an oxygen lance to cut area D. Pull the hand chain hoist to remove the crank wheel. Figure 9 As shown.

[0070] 5. Using the welding positioning plate 28 in conjunction with the tooling and hydraulic jack 30, push out the left short shaft section of the long shaft 10; using the welding positioning plate 29 in conjunction with the tooling and hydraulic jack 31, push out the right short shaft section of the short shaft 19. Weld the positioning plate 28 to the left section of the right long shaft section of the long shaft 10. Use the tooling 34 to attach the hydraulic jack 30 and slowly lower it until the base of the hydraulic jack 30 is placed on the positioning plate 28. Control the hydraulic jack 30 to extend and push out the left short shaft section of the long shaft 10. Similarly, weld the positioning plate 29 to the right section of the left long shaft section of the short shaft 19. Place the base of the hydraulic jack 31 on the positioning plate 29. Control the hydraulic jack 31 to extend and push out the right short shaft section of the short shaft 19. Figure 10 As shown.

[0071] 6. Use an oxygen blowing rod to melt and drill holes in the area of ​​the long shaft 10 with liquid oxygen, and use tool 34 and hydraulic jack 30 to push out the right side of the long shaft 10; use an oxygen blowing rod to melt and drill holes in the area of ​​the short shaft 19 with liquid oxygen, and use tool 34 and hydraulic jack 31 to push out the left side of the long shaft 19. Using an oxygen blowing rod, liquid oxygen is melted and used to drill a hole in region E of the long shaft 10. Once the hole depth reaches 2 / 3 of the shaft length, water is sprayed to cool region G of the long shaft 10. Using a tooling fixture, hydraulic jack 130 is quickly turned around and positioned, then extended to push out the right side of the long shaft 10. Similarly, using an oxygen blowing rod, liquid oxygen is melted and used to drill a hole in region F of the short shaft 19. Once the hole depth reaches 2 / 3 of the shaft length, water is sprayed to cool region H of the short shaft 19. Using tooling 34, hydraulic jack 21 is quickly turned around and positioned, then extended to push out the left side of the long shaft 19. Figure 11 As shown.

[0072] 7. Using a crane and a hand-operated hoist, place the new trolley of the annular cooler back into the original position of the old trolley; use a hand-operated hoist to implement safety measures to prevent the new trolley from falling.

[0073] 8. First, insert the sliding bearing 7 into the inner hole of the rotating frame 2 and tighten it with screws. Using a crane to suspend a copper rod and tap it, insert the assembled new parts: long shaft 10, retaining ring 12, positioning sleeve 6, and crank wheel assembly 3 from right to left through the right side hole of the trolley, passing through the left side of the right side support plate of the trolley. Then, insert key 9 and key 11 into the keyway of the long shaft and reset retaining ring 12 and cotter pin 13. Similarly, first, insert the sliding bearing 16 into the inner hole of the rotating frame 2 and tighten it with screws. Insert the assembled new parts: short shaft 19, retaining ring 21, positioning sleeve 2, cotter pin 22, and screw 15 from left to right through the right side hole of the trolley, passing through the right side of the left side support plate of the trolley. Then, insert key 3 and key 4 into the keyway of the short shaft and reset retaining ring 21 and cotter pin 22 to complete the replacement of the trolley shaft.

[0074] 9. Remove the safety anti-fall measures for the trolley and reposition the dust cover 27 by hoisting and welding.

[0075] like Figure 13-15As shown, the fixture 34 comprises a front support 3401, a rear support 3402, a rotating shaft 3403, and a pull rope 3416, forming an A-shaped frame. The front support 3401 and the rear support 3402 are each supported and reinforced by a support bracket 3404 and a support bracket 3405, respectively. The bearing housing bracket 3406 is connected to the front support 3401 by screws. Bearing housings 3408, 3409, 3409, and 4415 are each connected to the front support 3401 by screws. The shaft end of the crank handle 3412 passes through the inner hole of bearing housing 3409 and is axially positioned by a shaft clip. Similarly, the inner hole of the pinion 3410 is keyed to the left side shaft diameter of the crank handle 3412 and axially positioned by a shaft clip. The two sides of the rotating shaft 3417 pass through bearing housing 1 3407 and bearing housing 2 3408 respectively, and there are wire rope baffle structures on both sides of the middle of the rotating shaft 3417. The large gear 3411 and ratchet 3414 are each keyed to the rotating shaft 3417 and axially positioned by a shaft clip. The two bearing housings 4 3415 and the bearing housing bracket 3406 are connected to the front bracket 3401 by screws, and the shaft sections at both ends of the pawl 3413 each pass through one bearing housing 4 3415.

[0076] The usage process of this tool 34 is as follows: First, ... Figure 11 The pawl 3413 is moved clockwise to the right, disengaging the ratchet 3414. Turning the hand crank counter-clockwise causes the pinion 3410 to rotate, which in turn drives the gear 3411 clockwise. The gear 3411 and shaft 3417 rotate clockwise simultaneously, causing the shaft 3403 to lower the hook 3419 via the wire rope 3418, hooking the load (hydraulic jack or scrap metal from a trolley axle). Moving the pawl 3413 counter-clockwise to the left engages the ratchet 3414. Turning the hand crank counter-clockwise again causes the hook 3419 to lift the load. When the load needs to be suspended, stop turning the hand crank. Due to the self-locking action of the ratchet 3414 and pawl 3413, the ratchet 3414 will not reverse, suspending the load. This process completes the descent, lifting, and suspension of the load. This tooling has a simple structure, reliable principle, is foldable, and lightweight, which can greatly improve the efficiency of transporting waste materials from the trolley axle and hydraulic jacks during the trolley axle replacement process.

[0077] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0078] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A sinter ring cooler trolley quick replacement method, characterized in that, Includes the following steps: S1. After the material is discharged from the upper surface of the ring cooler trolley, the machine is stopped, the power is cut off by all three parties, and a sign is posted, making it ready for maintenance. S2. Remove the dust cover by gas cutting and hoisting, and use a hand chain hoist to prevent the trolley from falling. S3. Remove grate plate one, grate plate two, grate plate three, and grate plate four; S4. Use tooling to cut and lift out the long axis area and the short axis area; S5. Using welding positioning plate one in conjunction with tooling and hydraulic jack one, push out the left short shaft section of the long shaft; using welding positioning plate two in conjunction with tooling and hydraulic jack two, push out the right short shaft section of the short shaft. S6. Use an oxygen blowing rod to melt and drill holes in the long shaft area with liquid oxygen, and use the tooling and hydraulic jack one to push out the right side of the long shaft section; use an oxygen blowing rod to melt and drill holes in the short shaft area with liquid oxygen, and use the tooling and hydraulic jack two to push out the left side of the short shaft section. S7. Using a crane and a hand-operated hoist, place the new trolley of the annular cooler into the original position of the old trolley; use a hand-operated hoist to implement safety measures to prevent the new trolley from falling. S8. First, insert the sliding bearing 1 into the inner hole of the slewing frame and tighten it with screws. Using a crane-suspended copper rod to tap the assembly of the new parts: long shaft, retaining ring 1, positioning sleeve 1, and crank wheel assembly, insert them from right to left through the right side hole of the trolley, passing through the left side of the right side support plate of the trolley. Then, insert key 1 and key 2 into the keyway of the long shaft and reset retaining ring 1 and cotter pin 1. Similarly, first, insert the sliding bearing 2 into the inner hole of the slewing frame and tighten it with screws. Insert the assembly of the new parts: short shaft, retaining ring 2, positioning sleeve 2, cotter pin 2, and screw 2 from left to right through the right side hole of the trolley, passing through the right side of the left side support plate of the trolley. Then, insert key 3 and key 4 into the keyway of the short shaft and reset retaining ring 2 and cotter pin 2. This completes the replacement of the trolley shaft. S9. Remove the safety anti-fall measures for the trolley and reposition the dust cover by hoisting and welding.

2. The sinter ring cooler trolley quick change method according to claim 1, characterized in that, The tooling in step S4 includes a front support, a rear support, a rotating shaft, and a pull rope forming an A-shaped frame; the front support and the rear support are each supported and reinforced by a support one and a support two; the bearing seat support is connected to the front support by screws, and the front support is connected to bearing seat one, bearing seat two, bearing seat three, and bearing seat four by screws.

3. The method for quick replacement of the sintering ring cooler trolley according to claim 2, characterized in that, The inner hole of bearing seat three passes through the shaft end of the crank handle and is axially positioned by a shaft clip; similarly, the left shaft diameter of the crank handle is keyed to the inner hole of the pinion and axially positioned by a shaft clip; bearing seat one and bearing seat two are respectively installed on both sides of the rotating shaft, and there are wire rope baffle structures on both sides of the middle of the rotating shaft. The large gear and ratchet are connected to the rotating shaft by a key and are axially positioned by a shaft clip. The two bearing seats four and the bearing seat bracket are connected to the front bracket by screws. The shaft sections at both ends of the pawl each pass through a bearing seat four. The lowering, lifting and suspending of the hoisted load are achieved by the counterclockwise and clockwise rotation of the hand crank handle and the action of the pawl.

4. The method for quick replacement of the sintering ring cooler trolley according to claim 1, characterized in that, The steps for cutting and lifting out the long and short shaft regions in step S4 are as follows: Use a tooling fixture to weld the lifting lugs at region C of the long shaft and connect them with ropes; use an oxygen blasting rod to cut both sides of region C of the long shaft sequentially; after cutting, use the tooling fixture to lift out the waste material from region C; similarly, move the tooling fixture above region E of the short shaft to lift out the waste material from region E; use a hand chain hoist to fix the crank wheel on the right side of region D on the outside of the long shaft; then use an oxygen blasting rod to cut region D; and finally, pull the hand chain hoist to remove the crank wheel.

5. The method for quick replacement of the sintering ring cooler trolley according to claim 1, characterized in that, The step of ejecting the short shaft section of the cut long shaft and short shaft in step S5 is as follows: Weld positioning plate one to the left section of the right long shaft section of the long shaft, and use tooling to attach hydraulic jack one and slowly lower it until the base of hydraulic jack one is placed on positioning plate one; control hydraulic jack one to extend and eject the left short shaft section of the long shaft; similarly, weld positioning plate two to the right section of the left long shaft section of the short shaft, and place the base of hydraulic jack two on positioning plate two; control hydraulic jack two to extend and eject the right short shaft section of the short shaft.

6. The method for quick replacement of the sintering ring cooler trolley according to claim 1, characterized in that, The step of ejecting the long shaft segment of the cut long shaft and short shaft in step S6 is as follows: Use an oxygen blowing rod to melt and drill holes in region E of the long shaft with liquid oxygen until the hole depth reaches 2 / 3 of the shaft segment length. Then, spray water to cool region G of the long shaft. Using a tooling fixture, quickly turn the hydraulic jack one around, quickly place the hydraulic jack one in position, and control the extension of the hydraulic jack one to eject the right side of the long shaft segment. Similarly, use an oxygen blowing rod to melt and drill holes in region F of the short shaft with liquid oxygen until the hole depth reaches 2 / 3 of the shaft segment length. Then, spray water to cool region H of the short shaft. Using a tooling fixture, quickly turn the hydraulic jack two around and place it in position, and control the extension of the hydraulic jack two to eject the left side of the long shaft segment.

7. The method for quick replacement of the sintering ring cooler trolley according to claim 1, characterized in that, The cutting in step S4 is a melting cutting method. An oxygen blowing rod is used to melt and cut the C and D regions of the long axis and the E region of the short axis, respectively, to quickly divide the long axis and the short axis into long axis segments and short axis segments.

8. The method for quick replacement of the sintering ring cooler trolley according to claim 7, characterized in that, For the melting, cutting, and drilling of the oxygen blowing rod, the oxygen pressure reducing valve needs to be adjusted to a pressure value of 0.85-0.92MPa, the flame color needs to be dark yellow, and the flame temperature needs to reach 3600℃. During the melting process on the melting trolley shaft, the oxygen blowing rod needs to be replaced in a timely manner to ensure the continuity of melting.

9. The method for quick replacement of the sintering ring cooler trolley according to claim 1, characterized in that, In step S4, the oxygen blowing rod is melted and the hole is drilled until the hole depth reaches 2 / 3 of the shaft section length. Water is sprayed for cooling, with an average water temperature of 23°C and a spraying time of 5 minutes. The hydraulic jack is then quickly placed in position.

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