Equipment for derusting the inner cavity of the straightening roller for hot rolling of medium and thick plates
Through automated rust removal equipment, the problem of rust removal in the inner cavity of the straightening roller of medium and thick plate hot rolling straightener is solved, and efficient and uniform rust removal effect is achieved, reducing labor intensity and safety hazards.
Patent Information
- Application Number
- CN202311351696.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-18
- Publication Date
- 2025-04-01
AI Technical Summary
The cooling water channel of the straightening roller cavity of the medium-thick plate hot-rolling straightener is difficult to effectively remove rust, resulting in insufficient cooling and uneven cooling, causing defects such as steel contamination on the roller surface and abnormal wear.
An automated rust removal equipment is designed, and the straightening roller is transported to the closed sandblasting chamber through the trolley moving mechanism. The rotating roller shaft drives the straightening roller to rotate at a constant speed, and the sandblasting gun automatically moves back and forth to remove sandblasting.
It realizes efficient and uniform rust removal in the inner cavity of the straightening roller, reduces labor intensity, reduces safety hazards, and ensures the accuracy and thoroughness of rust removal.
Smart Images
Figure CN119734206A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of metallurgical equipment, in particular to rust removal equipment for a cooling water channel in an inner cavity of a straightening roller of a medium and thick plate hot rolling straightening machine. Background Art
[0002] In the metallurgical industry, since the steel plates straightened by the medium and thick plate hot rolling straightening machine are hot rolled steel plates with a temperature of more than 800℃, the working environment temperature is relatively high. During the straightening process, the straightening rollers are in a high temperature working environment for a long time, which is prone to abnormal wear and abnormal steel sticking and other defects, resulting in fault shutdown. Under normal circumstances, the roller sticking is not only affected by the roller roughness, the installation accuracy of the roller box and equipment, and the serious excessive temperature of the straightening steel plate, but also depends on the water cooling effect and cooling uniformity of the straightening roller cavity. Since the straightening roller cavity is a slender deep hole and circulates in the cooling water environment for a long time, the cooling water circulation in the straightening roller cavity will cause scale accumulation in the cavity, resulting in severe rust on a large area of the cavity, and excessive accumulation of impurities, scale, and oxide scale, which greatly affects the heat dissipation of the straightening roller body. During inspection and maintenance, the straightening roller cavity cannot be cleaned and rusted in time, effectively and thoroughly, resulting in insufficient cooling and uneven cooling in the working environment, resulting in defects such as steel sticking on the roller surface and abnormal wear.
[0003] At present, in the process of repairing the roller box of the hot rolling straightening machine for medium and thick plates, it is relatively difficult to remove the rust from the cooling water channel in the inner cavity of the straightening roller. The conventional repair process of cleaning and removing the rust from the inner cavity of the straightening roller has the following shortcomings: 1. Cleaning the inner cavity of the straightening roller to remove rust with hydrochloric acid diluted in a certain proportion poses a great safety hazard, is inefficient, is extremely environmentally unfriendly, and is relatively harmful to the human body.
[0004] 2. Since the inner cavity of the straightening roller is a deep and long hole, it is usually operated back and forth with a steel pipe bound with a wire brush. Manual cleaning is difficult and labor-intensive, and the cleaning is not thorough and uneven. Summary of the invention
[0005] In order to overcome the shortcomings of the existing hot rolling straightening roller inner cavity rust removal technology, the purpose of the invention is to provide a device for rust removal of the inner cavity of medium and thick plate hot rolling straightening rollers, so as to solve the rust removal problem of the cooling water channel in the inner cavity of the straightening roller of the medium and thick plate hot rolling straightening machine.
[0006] To achieve the above-mentioned purpose of the invention, the transmission motor 1 installed on the trolley moving mechanism of the present invention drives the straightening roller and the rotating roller shaft mechanism into the closed sandblasting chamber through chain transmission, and the transmission motor 2 of the rotating roller shaft mechanism drives the straightening roller on the rotating roller shaft mechanism to perform uniform rotational motion in the sandblasting chamber through chain transmission; the sandblasting gun is fixed on the horizontal sandblasting steel pipe, and the transmission motor 3 on the sandblasting gun moving mechanism drives the sandblasting gun to move horizontally to the inner cavity of the straightening roller through the transmission of the transverse screw rod and the nut; the sandblasting valve of the press-in sandblasting tank enables the sandblasting gun to achieve reciprocating horizontal movement sandblasting and rust removal under the action of the sandblasting gun moving mechanism.
[0007] Furthermore, the transmission motor is fixed on the trolley moving mechanism, the driving sprocket of the output shaft of the transmission motor is connected to the passive sprocket on one of the connecting shafts of the roller through chain transmission, the rollers at both ends of the two connecting shafts are rollingly connected to the guide rails of the inlet guide rail frame, the rollers are connected and fixed to the two ends of the connecting shaft with the end cover by screws, and are located outside the trolley moving mechanism, the two ends of the connecting shaft are connected to the trolley moving mechanism through the seat bearing two, and an extended guide rail connected to the inlet guide rail frame is provided in the sandblasting chamber.
[0008] Furthermore, the second transmission motor is fixed on the trolley moving mechanism, and the driving crane places the straightening roller to be derusted between two rows of rotating roller shafts that can rotate freely on the rotating roller shaft mechanism. The two rows of rotating roller shafts are bolted to the trolley moving mechanism through two bearing seats at both ends. A deep groove ball bearing is installed in the second bearing seat, and one row of rotating roller shafts is a rotating roller shaft with power. The active sprocket two of the output shaft of the second transmission motor is connected with the passive sprocket two on one row of rotating roller shafts through chain transmission. The second transmission motor drives one row of rotating roller shafts to rotate, and drives the straightening roller to rotate at a uniform speed through friction resistance; the inner ring of the deep groove ball bearing is positioned with the stepped shaft of the rotating roller shaft through an elastic retaining ring for the shaft, and the outer ring is positioned through an end cover two; a plurality of rubber wheels are installed on the rotating roller shaft, and the rubber wheels are evenly installed on the rotating roller shaft.
[0009] Furthermore, the transmission motor three is fixed on the motor base at the top of the sandblasting gun moving mechanism; the sandblasting gun is threadedly connected to the horizontal sandblasting steel pipe, the horizontal sandblasting steel pipe is connected and fixed to the lower part of the vertical connecting rod, the upper screw nut of the vertical connecting rod is threadedly connected to the transverse screw, and the two ends of the transverse screw are equipped with a bearing seat one, a deep groove ball bearing two and an end cover three, the bearing seat one is fixed on the sandblasting gun moving mechanism, the output shaft of the transmission motor three is connected to the transverse screw through a chain drive, the transmission motor three drives the transverse screw to rotate, and drives the screw nut and the vertical connecting rod, the horizontal sandblasting steel pipe, and the sandblasting gun to achieve horizontal reciprocating movement; the horizontal sandblasting steel pipe is fixed by two sets of upper and lower height adjustment mechanisms for realizing the adjustable height of the horizontal sandblasting steel pipe and the horizontal guide positioning, the The hand wheel of the height adjustment mechanism is connected to one end of the screw rod, and the other end of the screw rod is connected to the guide wheel frame through a seat bearing. A screw rod fixing nut is installed in the middle of the screw rod, and the screw rod fixing nut is fixed on the bracket of the sandblasting gun moving mechanism with screws. The upper and lower hand wheels are manually turned to drive the screw rod to rotate, so that the height position adjustment of the sandblasting gun and the horizontal sandblasting steel pipe supported by the screw rod can be achieved; guide columns are arranged on the bracket of the sandblasting gun moving mechanism and on both sides of the screw rod, and the guide sleeve is fixed on the guide wheel frame and the bracket of the sandblasting gun moving mechanism. The two ends of the guide column are connected and fixed to the guide sleeve by screws, and the guide column is slidably connected with the middle guide sleeve; two groups of guide wheels are arranged on the inner side of the guide column, and the guide wheels are fixed on the bracket of the sandblasting gun moving mechanism, and each group of guide wheels performs horizontal guiding and positioning on the horizontal sandblasting steel pipe.
[0010] Furthermore, a sandblasting hose is connected to the tail of the horizontal sandblasting steel pipe, and the sandblasting hose is connected to the sand outlet of the press-in sandblasting tank.
[0011] Furthermore, the closed sandblasting chamber is provided with a plurality of viewing windows.
[0012] Compared with the prior art, the present invention places the straightening roller to be derusted on the rotating roller shaft on the trolley moving mechanism, and the trolley moving mechanism transports the straightening roller to the closed sandblasting chamber, and the rotating roller shaft drives the straightening roller to rotate at a uniform speed, and the sandblasting moving mechanism drives the sandblasting gun to automatically perform reciprocating horizontal sandblasting and rust removal treatment in the inner cavity of the straightening roller to be derusted. The automation degree is high, the rust removal is uniform, the rust removal effect can be greatly improved, and the labor intensity of the rust removal operation can be reduced. Compared with the rust removal by hydrochloric acid cleaning, the safety hazard can be effectively reduced, and the rust removal of the inner cavity of the straightening roller is ensured to be accurate and thoroughly cleaned. The entire rust removal process does not require manual intervention, and the rust removal efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the present invention.
[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the trolley moving mechanism and the entrance guide frame.
[0015] Figure 3 yes Figure 2 Top view of the .
[0016] Figure 4 yes Figure 2 Side view of.
[0017] Figure 5 yes Figure 1 A simplified structural diagram of the trolley moving mechanism and the closed sandblasting chamber.
[0018] Figure 6 yes Figure 5 Top view of the .
[0019] Figure 7 yes Figure 5 Side view of.
[0020] Figure 8 yes Figure 1 A simplified structural diagram of the 6 parts of the sandblasting gun moving mechanism.
[0021] Fig. 9 yes Figure 2 A local enlarged view of point X.
[0022] Fig.10 yes Figure 3 A partial enlarged view of point Z.
[0023] Fig.11 yes Figure 1 A partial enlarged view of point Y.
[0024] In the figure: 1. Crane; 2. Straightening roller; 3. Trolley moving mechanism; 4. Rotating roller mechanism; 5. Sandblasting gun; 6. Sandblasting gun moving mechanism; 7. Sandblasting chamber; 8. Sandblasting tank; 9. Inlet guide rail frame; 10. Height adjustment mechanism; 11. Transmission motor 1; 12. Transmission motor 2; 13. Transmission motor 3; 14. Roller; 15. Guide rail; 16. Rotating roller; 17. Deep groove ball bearing 1; 18. Motor base; 19. Horizontal sandblasting steel pipe; 20. Vertical connecting rod; 21. Screw nut; 22. Horizontal screw; 23. Bearing seat 1; 24. Deep groove ball bearing 2; 25. End 1. Cover three; 26. Hand wheel; 27. Screw; 28. Bearing with seat one; 29. Screw fixing nut; 30. Guide column; 31. Guide sleeve; 32. Guide wheel frame; 33. Guide wheel; 34. Sandblasting hose; 35. Sandblasting valve; 36. Connecting shaft; 37. End cover one; 38. Elastic retaining ring for shaft one; 39. End cover two; 40. Rubber wheel; 42. Driving sprocket one; 43. Passive sprocket one; 44. Driving sprocket two; 45. Passive sprocket two; 46. Driving sprocket three; 47. Passive sprocket three; 48. Visual window; 49. Extended guide rail; 50. Bearing seat two; 51. Bearing with seat two. DETAILED DESCRIPTION
[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, the straightening roller 2 of the present invention is lifted by the crane 1, the straightening roller 2 to be derusted is placed on the rotating roller shaft mechanism 4 on the trolley moving mechanism 3, the transmission motor 11 installed on the trolley moving mechanism 3 is turned on, and the transmission motor 11 drives the straightening roller 2 and the rotating roller shaft mechanism 4 into the closed sandblasting chamber 7 through chain transmission; the transmission motor 2 12 installed on the trolley moving mechanism 3 is turned on, and the transmission motor 2 12 drives the straightening roller 2 on the rotating roller shaft mechanism 4 to be moved in the sandblasting chamber 7 through chain transmission. Uniform rotational motion; the sandblasting gun 5 is fixed on the horizontal sandblasting steel pipe 19, and the transmission motor three 13 on the sandblasting gun moving mechanism 6 is turned on. The transmission motor three 13 drives the sandblasting gun 5 to move horizontally to the inner cavity of the straightening roller 2 through the transmission of the transverse screw 22 and the screw nut 21; the sandblasting valve 35 of the pressed-in sandblasting tank 8 is opened, and the sandblasting valve 35 enables the sandblasting gun 5 to achieve reciprocating horizontal movement of sandblasting and rust removal under the action of the sandblasting gun moving mechanism 6, so as to achieve the purpose of automatically cleaning and rust removal of the inner cavity of the straightening roller 2.
[0026] The transmission motor 11 is fixed on the trolley moving mechanism 3, the driving sprocket 142 of the output shaft of the transmission motor 11 is connected to the driven sprocket 143 on one of the connecting shafts 36 of the roller 14 through chain transmission, the rollers 14 at both ends of the two connecting shafts 36 are rollingly connected to the guide rails 15 of the entrance guide frame 9, the rollers 14 are connected and fixed to the two ends of the connecting shaft 36 with screws and end caps 137, and are located outside the trolley moving mechanism 3, and the two ends of the connecting shaft 36 are connected to the trolley moving mechanism 3 through seat bearings 2 51. Turn on the transmission motor 11, and the rollers 14 on the trolley moving mechanism 3 uniformly transport the trolley moving mechanism 3, the straightening roller 2 to be derusted and the rotating roller shaft mechanism 4 on the guide rails 15 of the entrance guide frame 9 through chain transmission to the sandblasting chamber 7, and the sandblasting chamber 7 is provided with an extended guide rail 49 connected to the entrance guide frame 9 to ensure smooth entry into the sandblasting chamber 7.
[0027] The transmission motor 12 is fixed on the trolley moving mechanism 3. The crane 1 places the straightening roller 2 to be derusted between the two rows of rotating rollers 16 that can rotate freely on the rotating roller mechanism 4. The two rows of rotating rollers 16 are bolted to the trolley moving mechanism 3 through the bearing seats 50 at both ends. The bearing seats 50 are equipped with deep groove ball bearings 17. One row of rotating rollers 16 is a rotating roller 16 with power. The driving sprocket 44 of the output shaft of the transmission motor 12 is connected with the passive sprocket 45 on one row of rotating rollers 16 through chain transmission. The transmission motor 12 is turned on, and the transmission motor 12 drives one row of rotating rollers 16 to rotate, and drives the straightening roller 2 to rotate at a uniform speed through friction resistance; the inner ring of the deep groove ball bearing 17 is positioned with the stepped shaft of the rotating roller 16 through the shaft elastic retaining ring 38, and the outer ring is positioned through the end cover 39; a plurality of rubber wheels 40 are installed on the rotating roller 16, and the rubber wheels 40 are evenly installed on the rotating roller 16.
[0028] The transmission motor 3 13 is fixed on the motor base 18 at the top of the sandblasting gun moving mechanism 6; the sandblasting gun 5 is threadedly connected to the horizontal sandblasting steel pipe 19, and the horizontal sandblasting steel pipe 19 is connected and fixed to the lower part of the vertical connecting rod 20, and the upper screw nut 21 of the vertical connecting rod 20 is threadedly connected to the transverse screw 22, and the two ends of the transverse screw 22 are equipped with a bearing seat 1 23, a deep groove ball bearing 24 and an end cover 3 25, and the bearing seat 1 23 is fixed on the sandblasting gun moving mechanism 6, and the active sprocket 3 46 of the output shaft of the transmission motor 3 13 is connected with the passive sprocket 3 47 on the transverse screw 22 through a chain drive. When the transmission motor 3 13 is turned on, the transmission motor 3 13 drives the transverse screw 22 to rotate, driving the screw nut 21 and the vertical connecting rod 20, the horizontal sandblasting steel pipe 19, and the sandblasting gun 5 to achieve horizontal reciprocating movement; the horizontal sandblasting steel pipe 19 is fixed by the upper and lower sets of height adjustment mechanisms 10, which are used to achieve the adjustable height and horizontal guide positioning of the horizontal sandblasting steel pipe 19, and the height adjustment The hand wheel 26 of the mechanism 10 is connected to one end of the screw rod 27, and the other end of the screw rod 27 is connected to the guide wheel frame 32 through a seat bearing 28. A screw rod fixing nut 29 is installed in the middle of the screw rod 27, and the screw rod fixing nut 29 is fixed to the bracket of the sandblasting gun moving mechanism 6 with screws. The upper and lower hand wheels 26 are manually turned to drive the screw rod 27 to rotate, so that the screw rod 27 can support the sandblasting gun 5 and the horizontal sandblasting steel pipe 19 in height. Adjustment of the position is convenient for accurate spraying of the inner cavity of the straightening roller 2. Sand rust removal; guide columns 30 are provided on the bracket of the sandblasting gun moving mechanism 6 and on both sides of the screw rod 27, and the guide sleeve 31 is fixed on the guide wheel frame 32 and the bracket of the sandblasting gun moving mechanism 6. The two ends of the guide column 30 are connected and fixed to the guide sleeve 31 with screws, and the guide column 30 is slidably connected to the middle guide sleeve 31; two groups of guide wheels 33 are provided on the inner side of the guide column 30, and the guide wheels 33 are fixed on the bracket of the sandblasting gun moving mechanism 6, and each group of guide wheels 33 performs horizontal guiding and positioning on the horizontal sandblasting steel pipe 19.
[0029] The tail of the horizontal sandblasting steel pipe 19 is connected with a sandblasting hose 34, which is connected to the sand outlet of the press-in sandblasting pot 8. The sandblasting valve 35 of the press-in sandblasting pot 8 is opened to achieve sandblasting and rust removal.
[0030] The closed sandblasting chamber 7 is provided with a plurality of visual windows 48 to facilitate the operator to observe the operation of the equipment in the closed sandblasting chamber 7 .
Claims
1. A device for removing rust from the inner cavity of a hot-rolled straightening roller for medium and thick plates, characterized in that: A transmission motor 1 (11) mounted on a trolley moving mechanism (3) drives a straightening roller (2) and a rotating roller shaft mechanism (4) into a closed sandblasting chamber (7) through a chain drive, and a transmission motor 2 (12) of the rotating roller shaft mechanism (4) drives the straightening roller (2) on the rotating roller shaft mechanism (4) to perform a uniform rotational motion in the sandblasting chamber (7) through a chain drive; a sandblasting gun (5) is fixed on a horizontal sandblasting steel pipe (19), and a transmission motor 3 (13) on a sandblasting gun moving mechanism (6) drives the sandblasting gun (5) to move horizontally to the inner cavity of the straightening roller (2) through a transverse screw rod (22) and a screw rod nut (21); and a sandblasting valve (35) of a press-in sandblasting tank (8) enables the sandblasting gun (5) to achieve reciprocating horizontal movement of sandblasting and rust removal under the action of the sandblasting gun moving mechanism (6).
2. The equipment for removing rust from the inner cavity of the hot-rolled straightening roller of medium and thick plates according to claim 1 is characterized in that: The transmission motor 1 (11) is fixed on the trolley moving mechanism (3), and the driving sprocket 1 (42) of the output shaft of the transmission motor 1 (11) is connected to the driven sprocket 1 (43) on one of the connecting shafts (36) of the roller (14) through a chain drive. The rollers (14) at both ends of the two connecting shafts (36) are rollingly connected to the guide rails (15) of the inlet guide rail frame (9). The rollers (14) are connected to the end caps 1 (37) and fixed to the two ends of the connecting shaft (36) by screws and are located outside the trolley moving mechanism (3). The two ends of the connecting shaft (36) are connected to the trolley moving mechanism (3) through the seat bearing 2 (51). An extended guide rail (49) connected to the inlet guide rail frame (9) is provided in the sandblasting chamber (7).
3. The equipment for removing rust from the inner cavity of the hot-rolled straightening roller of medium and thick plates according to claim 1 is characterized in that: The second transmission motor (12) is fixed on the trolley moving mechanism (3). The traveling crane (1) places the straightening roller (2) to be derusted between two rows of freely rotatable rotating rollers (16) on the rotating roller mechanism (4). The two rows of rotating rollers (16) are bolted to the trolley moving mechanism (3) through two bearing seats (50) at both ends; a deep groove ball bearing (17) is installed in the bearing seat (50), one row of rotating rollers (16) is a rotating roller (16) driving the power. The driving sprocket (2) of the output shaft of the second transmission motor (12) is connected to the rotating roller mechanism (4). 44) is connected to a passive sprocket 2 (45) on one row of rotating roller shafts (16) through a chain drive, and a transmission motor 2 (12) drives one row of rotating roller shafts (16) to rotate, thereby driving the straightening roller (2) to rotate at a uniform speed through friction resistance; the inner ring of the deep groove ball bearing 1 (17) is positioned with the stepped shaft of the rotating roller shaft (16) through an elastic retaining ring 1 (38) for the shaft, and the outer ring is positioned through an end cover 2 (39); a plurality of rubber wheels (40) are installed on the rotating roller shaft (16), and the rubber wheels (40) are evenly installed on the rotating roller shaft (16).
4. The equipment for removing rust from the inner cavity of the hot-rolled straightening roller of medium and thick plates according to claim 1 is characterized in that: The transmission motor three (13) is fixed on the motor base (18) at the top of the sandblasting gun moving mechanism (6); the sandblasting gun (5) is threadedly connected to the horizontal sandblasting steel pipe (19), the horizontal sandblasting steel pipe (19) is connected and fixed to the lower part of the vertical connecting rod (20), the upper screw nut (21) of the vertical connecting rod (20) is threadedly connected to the transverse screw rod (22), and the two ends of the transverse screw rod (22) are equipped with a bearing seat one (23), a deep groove ball bearing two (24) and an end cover three (25), the bearing seat one (23) is fixed to the sandblasting gun moving mechanism ( 6), the active sprocket three (46) of the output shaft of the transmission motor three (13) is connected to the passive sprocket three (47) on the transverse screw rod (22) through a chain drive, the transmission motor three (13) drives the transverse screw rod (22) to rotate, driving the screw nut (21) and the vertical connecting rod (20), the horizontal sandblasting steel pipe (19), and the sandblasting gun (5) to achieve horizontal reciprocating movement; the horizontal sandblasting steel pipe (19) is fixed by two sets of upper and lower height adjustment mechanisms (10) for achieving height adjustment and horizontal guide positioning of the horizontal sandblasting steel pipe (19), and the A hand wheel (26) of the height adjustment mechanism (10) is connected to one end of a screw rod (27), and the other end of the screw rod (27) is connected to a guide wheel frame (32) through a seat bearing (28). A screw rod fixing nut (29) is mounted in the middle of the screw rod (27), and the screw rod fixing nut (29) is fixed to a bracket of a sandblasting gun moving mechanism (6) by screws. The upper and lower hand wheels (26) are manually rotated to drive the screw rod (27) to rotate, so that the screw rod (27) can support the sandblasting gun (5) and the horizontal sandblasting steel pipe (19) in height. A guide column (30) is provided on the bracket of the moving mechanism (6) and on both sides of the screw rod (27); a guide sleeve (31) is fixed on a guide wheel frame (32) and the bracket of the sandblasting gun moving mechanism (6); both ends of the guide column (30) are connected and fixed to the guide sleeve (31) by screws; the guide column (30) is slidably connected to the middle guide sleeve (31); two groups of guide wheels (33) are provided on the inner side of the guide column (30); the guide wheels (33) are fixed on the bracket of the sandblasting gun moving mechanism (6); each group of guide wheels (33) performs horizontal guiding and positioning on the horizontal sandblasting steel pipe (19).
5. The equipment for removing rust from the inner cavity of the hot-rolled straightening roller of medium and thick plates according to claim 1 is characterized in that: The tail of the horizontal sandblasting steel pipe (19) is connected to a sandblasting hose (34), and the sandblasting hose (34) is connected to the sand outlet of the press-in sandblasting pot (8).
6. The equipment for removing rust from the inner cavity of the hot-rolled straightening roller of medium and thick plates according to claim 1 is characterized in that: The closed sandblasting chamber (7) is provided with a plurality of viewing windows (48).