An automatic lubrication system for a hot rolling reel

Abstract

The present invention discloses an automatic lubrication system for a hot rolling reel, including a mandrel part, the mandrel part is connected to one end of an extension shaft part, and the other end of the extension shaft part is provided with four fixed plates, and a distribution valve is provided on each of the fixed plates. The dry oil lubrication method for the hot rolling reel proposed by the present invention, compared with the existing dry oil lubrication method for the hot rolling reel, on the basis of ensuring reliable functions, cancels structures such as oil passing blocks, distribution valves, and main oil circuits on the mandrel, effectively reducing processing costs and procurement costs, and avoiding the situation of early machine shutdown caused by insufficient lubrication of the coil due to the shedding of the oil passing block, improving product quality and also improving the production efficiency of the steel mill.

Description

Technical Field

[0001] The present invention relates to the technical field of strip production equipment, and more specifically, to an automatic lubrication system for a hot rolling reel. Background Art

[0002] For link plunger-spline hot rolling reels with different strip widths, reels of different lengths are selected, but the structural form and design concept of the reels are the same. To meet the coiling of narrow strips such as 850mm, 880mm, 900mm, 950mm, etc., the reel needs to compress the space by shortening the axial distance between the extension shaft and the mandrel. The oil passage block on the mandrel needs to extend into the square avoidance hole inside the extension shaft, which greatly increases the phenomenon of the oil passage block falling due to the collision between the oil passage block and the avoidance hole of the reel extension shaft during operation. In recent years, due to the aging of the unit and the general environment of increased equipment operation vibration, the problem of the oil passage block falling on the mandrel has occurred in the link plunger-spline hot rolling reels of many steel mills coiling narrow strips, which not only damages the reel equipment, but also affects the continuity of the steel mill operation, delays the production progress, and affects the production efficiency.

[0003] There is no effective solution to these problems currently. Summary of the Invention

[0004] In view of the above technical problems in the related art, the present invention provides an automatic lubrication system for a hot rolling reel, which can overcome the above-mentioned deficiencies of the prior art.

[0005] To achieve the above technical objectives, the technical solution of the present invention is realized as follows:

[0006] An automatic lubrication system for a hot rolling reel includes a mandrel part, one end of the mandrel part is connected to one end of an extension shaft part, and four fixing plates are provided at the other end of the extension shaft part, and a distribution valve is provided on each fixing plate;

[0007] The extension shaft part includes an extension shaft. Inside the extension shaft, from the inside to the outside along the axial direction, there are round hole three, round hole two, round hole one, and square hole one in sequence. A sealing tube is provided in the round hole two, a pressing plate is provided in the round hole three, the sealing tube is connected to the extension shaft through the pressing plate, and nylon sleeves are provided axially inside the round hole one and the sealing tube;

[0008] At the upper and lower parts of one end of the extension shaft close to the mandrel part, there are main oil path A and main oil path B respectively. The main oil path A is connected to annular oil groove one through oil path a and oil path b, the main oil path B is connected to annular oil groove two through oil path c and oil path d, and both the annular oil groove one (13) and the annular oil groove two (16) are connected to the distribution valve (23) through the traditional oil path on the extension shaft;

[0009] Each of the distribution valves includes a newly added oil outlet point. Each newly added oil outlet point is connected to one end of its respective newly added oil passage. The oil outlet at the other end of the newly added oil passage is provided on the first square hole. The oil outlet is connected to the straight-through pipe joint at the upper end of the mandrel part through a hinged right-angle pipe joint and a metal hose. The metal hose is located inside the nylon sleeve.

[0010] Further, the distribution valve is a 5281 distribution valve with the oil supply capacity of 8 oil outlet points.

[0011] Further, the number of oil outlet points of the 5281 distribution valve is adjusted to 7 through a spacer ring screw.

[0012] Further, a sealing groove is also provided on the sealing pipe, and a sealing ring is provided in the sealing groove.

[0013] Further, the pressing plate is fixedly connected to the extension shaft through bolts.

[0014] Further, a total of 8 oil outlets are provided on the four sides of the first square hole.

[0015] Advantages of the present invention: The dry oil lubrication method for the hot rolling reel proposed by the present invention, compared with the existing dry oil lubrication method for the hot rolling reel, on the basis of ensuring reliable functions, cancels structures such as the oil passage block, distribution valve, and main oil passage on the mandrel, effectively reducing the processing cost and procurement cost, and avoiding the situation of early machine shutdown caused by insufficient lubrication of the reel due to the detachment of the oil passage block, improving the product quality and the production efficiency of the steel mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 FIG. is an assembly schematic diagram of the extension shaft part of the automatic lubrication system according to the embodiment of the present invention;

[0018] Figure 2 FIG. is a schematic diagram of the oil pipe connection of the mandrel part of the automatic lubrication system according to the embodiment of the present invention;

[0019] Figure 3 FIG. is a schematic diagram of a partial newly added oil passage of the extension shaft of the automatic lubrication system according to the embodiment of the present invention;

[0020] Figure 4 is Figure 3Schematic diagram of the oil passage dissection of the middle oil passage 1 - oil passage I - oil passage one;

[0021] Figure 5 It is a schematic diagram of the installation of the sealing ring in the sealing pipe of the automatic lubrication system according to the embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the cross-section of the extension shaft of the automatic lubrication system according to the embodiment of the present invention;

[0023] In the figure: 1. Extension shaft, 2. Nylon sleeve, 3. Sealing pipe, 4. Round hole two, 5. Oil passage a, 6. Oil passage b, 7. Main oil passage A, 8. Pressure plate, 9. Bolt, 10. Oil passage d, 11. Main oil passage B, 12. Sealing groove one, 13. Annular oil groove one, 14. Sealing groove two, 15. Oil passage c, 16. Annular oil groove two, 17. Sealing groove three, 18. Metal hose, 19. Articulated right-angle pipe joint, 20. End straight-through pipe joint, 21. Core shaft, 22. Round hole three, 23. Distribution valve, 24. Fixed plate, 25. Oil passage two, 26. Oil passage II, 27. Oil passage two, 28. Oil passage three, 29. Oil passage III, 30. Oil passage three, 31. Oil passage four, 32. Oil passage IV, 33. Oil passage four, 34. Oil passage five, 35. Oil passage V, 36. Oil passage five, 37. Oil passage six, 38. Oil passage VI, 39. Oil passage six, 40. Oil passage seven, 41. Oil passage VII, 42. Oil passage seven, 43. Oil passage eight, 44. Oil passage VIII, 45. Oil passage eight, 46. Oil passage one, 47. Oil passage I, 48. Oil passage one, 49. Sealing ring one, 50. Sealing ring two, 51. Sealing ring three, 52. Square hole one, 53. Round hole one. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0025] As Figure 1-3 shown, an automatic lubrication system for a hot rolling reel according to an embodiment of the present invention includes a core shaft part, one end of the core shaft part is connected to one end of the extension shaft part, and four fixed plates 24 are provided at the other end of the extension shaft part, and a distribution valve 23 is provided on each of the fixed plates 24;

[0026] The extension shaft portion includes an extension shaft 1. Inside the extension shaft, a round hole three 22, a round hole two 4, a round hole one 53, and a square hole one 52 are sequentially arranged from the inside to the outside along the axial direction. A sealing tube 3 is arranged inside the round hole two 4, and a pressing plate 8 is arranged inside the round hole three 22. The sealing tube 3 is connected to the extension shaft 1 through the pressing plate 8. A nylon sleeve 2 is arranged axially inside the round hole one 53 and the sealing tube 3;

[0027] At the upper and lower parts of one end of the extension shaft 1 close to the core shaft portion, a main oil passage A7 and a main oil passage B11 are respectively arranged. The main oil passage A7 is connected to an annular oil groove one 13 through an oil passage a5 and an oil passage b6, and the main oil passage B11 is connected to an annular oil groove two 16 through an oil passage c15 and an oil passage d10. Both the annular oil groove one 13 and the annular oil groove two 16 are connected to a distribution valve 23 through a traditional oil passage on the extension shaft;

[0028] Each distribution valve 23 includes 2 new oil outlet points. Each new oil outlet point is connected to one end of its respective new oil passage. The oil outlet at the other end of the new oil passage is arranged on the square hole one 52. The oil outlet is connected to a straight-through pipe joint 20 at the upper end of the core shaft portion through a hinged right-angle pipe joint 19 and a metal hose 18. The metal hose 18 is located inside the nylon sleeve 2.

[0029] In the embodiment, the existing structure of the connecting rod plunger - spline type hot rolling reel structure has a total of 27 oil outlet points. Some reels only have 25 oil outlet points, and their lubrication principle is the same as that of the reel with 27 oil outlet points. Due to space limitations, this patent only discusses the reel with 27 oil outlet points. Among them, 20 oil outlet points are supplied with oil by 4 distribution valves 23 of the 5281 type on the extension shaft 1, and 7 lubrication points on the core shaft 21 are supplied with oil by a distribution valve of the 5280 type at the end of the core shaft 21. The 5281 type distribution valve 23 has the oil supply capacity of 8 oil outlet points. In actual application, 2 oil outlet points are combined into 1 through the spacer ring screw among them, and the oil supply of 7 oil outlet points can be realized.

[0030] Structural description: For the extension shaft 1, compared with the traditional extension shaft of the connecting rod plunger-spline drive type hot rolling reel, the structures of round hole 1 53, round hole 2 4, round hole 3 55 and square hole 1 52 are added; for the extension shaft 1, compared with the traditional extension shaft of the connecting rod plunger-spline drive type hot rolling reel, 24 oil circuits are added, namely oil circuit 1 48, oil circuit 2 25, oil circuit 3 28, oil circuit 4 31, oil circuit 5 36, oil circuit 6 37, oil circuit 7 42, oil circuit 8 43, oil circuit I 47, oil circuit II 26, oil circuit III 29, oil circuit IV 32, oil circuit V 35, oil circuit VI 38, oil circuit VII 41, oil circuit VIII 44, oil circuit 1 46, oil circuit 2 27, oil circuit 3 30, oil circuit 4 33, oil circuit 5 34, oil circuit 6 39, oil circuit 7 40, oil circuit 8 45; for the extension shaft 1, compared with the traditional extension shaft of the connecting rod plunger-spline drive type hot rolling reel, oil circuits a 5, oil circuit b 6, oil circuit c 15 and oil circuit d 10 are added; the 5281 distribution valve 23 needs to adjust the traditional 5 oil outlet points to 7 oil outlet points by removing two spacer ring screws.

[0031] There are main oil circuit A 7 and main oil circuit B 11 on the extension shaft 1. Grease enters the extension shaft 1 through the main oil circuit A 7 and the main oil circuit B 11. The passage between the main oil circuit on the traditional extension shaft of the connecting rod plunger-spline drive type hot rolling reel and the 5281 distribution valve 23 is damaged by the round hole 1 53, round hole 2 4, round hole 3 55 and square hole 1 52. In order to ensure that the main oil circuit can supply oil to the 5281 distribution valve 23 normally, a sealing pipe 3 is installed in the round hole 2 4 of the extension shaft 1.

[0032] There are annular oil groove 1 13, annular oil groove 2 16, sealing groove 1 12, sealing groove 2 14 and sealing groove 3 17 on the sealing pipe 3. In order to axially position the sealing pipe 3, a pressing plate 8 is installed in the round hole 3 55, and the pressing plate 8 and the extension shaft 1 are fastened by bolts 9.

[0033] Through the oil circuit a 5 and the oil circuit b 6, the main oil circuit A 7 is connected to the annular oil groove 1 13. Through the oil circuit c 15 and the oil circuit d 10, the main oil circuit B 11 is connected to the annular oil groove 2 16. Then, by using the oil inlet circuit on the traditional extension shaft of the connecting rod plunger-spline drive type hot rolling reel, the grease in the main oil circuit A 7 and the main oil circuit B 11 can be transported to the 5281 distribution valve 23. Sealing rings 1 51, sealing ring 2 50 and sealing ring 3 49 are respectively installed in the sealing groove 1 12, sealing groove 2 14 and sealing groove 3 17 to seal the annular oil groove 1 13 and the annular oil groove 2 16 well.

[0034] The fixed plate 24 is installed on the extension shaft 1, and the 5281 distribution valve 23 is installed on the fixed plate 24. When the grease enters the 5281 distribution valve 23, each 5281 distribution valve 23 has 7 oil outlet points. Among them, 5 oil outlet points are the same as those of the 5281 distribution valve 23 on the traditional extension shaft of the connecting rod plunger-spline drive type hot rolling reel. The other 2 oil outlet points connect the oil circuit 48 with the oil circuit 25. The oil circuit 48 is connected to the oil circuit I 47, the oil circuit I is connected to the oil circuit 46, the oil circuit 25 is connected to the oil circuit II 26, and the oil circuit II 26 is connected to the oil circuit 27.

[0035] Similarly, for the two newly added oil outlet points of the 5281 distribution valves 23 of the other three parties, the connections of the oil circuit 28 - the oil circuit III 29 - the oil circuit 30, the oil circuit 31 - the oil circuit IV 32 - the oil circuit 33, the oil circuit 36 - the oil circuit V 35 - the oil circuit 34, the oil circuit 37 - the oil circuit VI 38 - the oil circuit 39, the oil circuit 42 - the oil circuit VII 41 - the oil circuit 40, and the oil circuit 43 - the oil circuit VIII 44 - the oil circuit 45 are achieved; the oil outlet positions of the oil circuit 46, the oil circuit 27, the oil circuit 30, the oil circuit 33, the oil circuit 34, the oil circuit 39, the oil circuit 40, and the oil circuit 45 are on the square hole 22. Each side of the square hole 22 has 2 oil outlets, and there are 8 oil outlets in total for the four sides.

[0036] Corresponding to the 27 - oil - outlet - point structure mentioned above, 7 articulated right - angle pipe joints 19 and 1 plug are installed at the 8 oil outlets respectively; the 7 articulated right - angle pipe joints 19 are respectively connected to 7 metal hoses 18. A nylon sleeve 2 is installed in the round hole 153. The nylon sleeve 2 passes through the inner hole of the sealing pipe 3. The nylon sleeve 2 plays a protective role for the metal hose 18. The metal hose 18 passes through the nylon sleeve 2 and is then connected to seven end - straight - through pipe joints 20. Finally, 8 oil outlet points newly added by the 5281 distribution valve 23 are actually 7, and one is blocked by a plug to complete the connection with the lubrication point on the mandrel 21, ensuring the normal lubrication of the lubrication point on the mandrel 21.

[0037] If the reel has only a 25 - oil - outlet - point structure, 5 articulated right - angle pipe joints and 3 plugs can be installed to achieve 25 oil outlet points.

[0038] To facilitate the understanding of the above - mentioned technical solution of the present invention, the above - mentioned technical solution of the present invention will be described in detail below through specific usage methods.

[0039] During specific use, according to the automatic lubrication system for hot-rolled coils described in the present invention, the grease enters the main oil circuit A and the main oil circuit B respectively. The grease in the main oil circuit A enters the annular oil groove 1 of the sealing tube through the oil circuit a and the oil circuit b. The grease in the main oil circuit B enters the annular oil groove 2 of the sealing tube through the oil circuit c and the oil circuit d. The grease in the annular oil groove 1 and the annular oil groove 2 enters the distribution valve through the traditional oil circuit, and the distribution valve distributes the grease. The grease at the newly added oil outlet point enters the core shaft lubrication point through the newly added oil circuit and the metal hose, thereby ensuring the normal lubrication of the core shaft lubrication point.

[0040] To sum up, with the help of the above-mentioned technical scheme of the present invention, the dry oil lubrication method of the hot-rolled coil proposed by the present invention, compared with the existing dry oil lubrication method of the hot-rolled coil, eliminates the oil block, distribution valve, main oil circuit and other structures on the core shaft on the basis of ensuring reliable functions, effectively reduces processing costs and procurement costs, and avoids the situation of premature discharge caused by insufficient coil lubrication due to the falling of the oil block, thereby improving product quality and the production efficiency of the steel plant.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic lubrication system for a hot rolling reel, characterized in that, it includes a mandrel part, the mandrel part is connected to one end of an extension shaft part, and four fixing plates (24) are provided at the other end of the extension shaft part, and a distribution valve (23) is provided on each of the fixing plates (24); The extension shaft part includes an extension shaft (1). Inside the extension shaft, a circular hole three (22), a circular hole two (4), a circular hole one (53) and a square hole one (52) are sequentially arranged from the inside to the outside along the axial direction. A sealing tube (3) is arranged in the circular hole two (4), a pressing plate (8) is arranged in the circular hole three (22), the sealing tube (3) is connected to the extension shaft (1) through the pressing plate (8), and nylon sleeves (2) are arranged axially inside the circular hole one (53) and the sealing tube (3); At the upper and lower parts of one end of the extension shaft (1) close to the mandrel part, a main oil path A (7) and a main oil path B (11) are respectively provided. The main oil path A (7) is connected to an annular oil groove one (13) through an oil path a (5) and an oil path b (6). The main oil path B (11) is connected to an annular oil groove two (16) through an oil path c (15) and an oil path d (10). Both the annular oil groove one (13) and the annular oil groove two (16) are connected to the distribution valve (23) through a traditional oil path on the extension shaft; Each of the distribution valves (23) includes 2 newly added oil outlet points. Each of the newly added oil outlet points is connected to one end of its respective newly added oil path. The oil outlet at the other end of the newly added oil path is arranged on the square hole one (52). The oil outlet is connected to the straight-through pipe joint (20) at the upper end of the mandrel part through a hinged right-angle pipe joint (19) and a metal hose (18). The metal hose (18) is located inside the nylon sleeve (2).

2. The automatic lubrication system according to claim 1, characterized in that, the distribution valve (23) is a 5281 distribution valve with the oil supply capacity of 8 oil outlet points.

3. The automatic lubrication system according to claim 2, characterized in that, the number of oil outlet points of the 5281 distribution valve is adjusted to 7 through a spacer ring screw.

4. The automatic lubrication system according to claim 1, characterized in that, a sealing groove is further provided on the sealing tube (3), and a sealing ring is arranged in the sealing groove.

5. The automatic lubrication system according to claim 1, characterized in that, the pressing plate (8) is fixedly connected to the extension shaft (1) through a bolt (9).

6. The automatic lubrication system according to claim 1, characterized in that, a total of 8 oil outlets are provided on the four sides of the square hole one (52).

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