Winding fixed shaft assembly and hot rolling coiler

Abstract

This invention relates to a coiling guide shaft assembly and a hot-rolling coiler, belonging to the technical field of hot-rolling coilers. The coiling guide shaft assembly includes two opposing clamping plates. One end of each clamping plate is fixed to a flange that is fixedly connected to the splined sleeve of the coil support shaft. The other end extends into an annular limiting groove formed on the splined shaft of the coil support shaft, with the end extending into the annular limiting groove not exceeding the centerline of the splined shaft and the distance greater than zero. The connection point between the clamping plate and the flange is close to the splined shaft side of the coil support shaft. This invention solves the problem of frequent damage to existing coiling guide shafts due to their long lever arm and insufficient rigidity by reducing the lever arm of the clamping plates. Furthermore, by providing clearance on both sides of the bearing in the end support structure, the axial force generated during the expansion and contraction of the coil support shaft is prevented from acting on the end support structure, thus avoiding frequent damage to the end support structure due to excessive axial force.

Description

Technical Field

[0001] This invention belongs to the technical field of hot rolling coilers, and relates to coiling fixed shaft assembly and hot rolling coiler. Background Technology

[0002] Currently, during the operation of hot-rolled coilers, unreliable factors and uneven stress can cause bending and deformation of the coiler's fixed shaft ring, damage to the threaded holes of the coiler's fixed shaft ring, and breakage of the bolts used to fix the coiler's fixed shaft ring. When the coiler's fixed shaft ring bends and deforms, a large gap appears between the splined sleeve and the bushing of the drum support shaft. This gap causes the bushing to be damaged by the impact of the deformation rebound force. Furthermore, the outer ring of the end support bearing located at the end of the drum support shaft is fixed in place by the end caps and through caps located on both sides. The end support bearing has no axial clearance, therefore it will be subjected to excessive axial force during the operation of the coiler, causing damage to the bearing, bearing cap, end cap, and through cap, resulting in equipment failure and affecting production. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a winding spool assembly and a hot rolling coiler to improve the stability of the hot rolling coiler.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A winding shaft assembly includes two relatively thick clamping plates arranged opposite each other. One end of the clamping plate is fixed to a flange that is fixedly connected to the spline sleeve of the winding drum support shaft, and the other end extends into an annular limiting groove opened on the spline shaft of the winding drum support shaft. The end extending into the annular limiting groove has a groove that matches the mandrel of the winding drum support shaft. The angle of the central angle corresponding to the groove is not greater than 150°. The connection point between the clamping plate and the flange is close to the spline shaft side of the winding drum support shaft.

[0006] Optionally, the angle of the central angle corresponding to the card slot is 110° to 120°.

[0007] Optionally, the plate and the flange are connected by two sets of screws, with the two sets of screws located on two concentric circles concentric with the flange.

[0008] Optionally, the number of screws in one group on the splined shaft near the drum support shaft is one more than that in the other group, and the two groups of screws are distributed alternately along the circumference of the flange.

[0009] Optionally, the number of screws in one set of the splined shaft near the drum support shaft is 3, and the number of screws in another set is 2.

[0010] Optionally, the pallet is provided with lifting lugs in the circumference.

[0011] A hot-rolled coiler includes a coil support shaft, the coil support shaft includes an end support shaft and an expansion coil connected to the end support shaft, the expansion coil includes a mandrel, a splined shaft sleeved on the mandrel, and a splined sleeve sleeved on the splined shaft, the splined sleeve is matched with the splined shaft, a flange is installed on the splined sleeve, and a coiling fixed shaft assembly is fixed on the flange, the coiling fixed shaft assembly is the coiling fixed shaft assembly as described above.

[0012] Optionally, the end support shaft is supported by an end support structure, which includes a bearing connected to the end support shaft. The bearing is mounted on a bearing housing. An end cover is provided on the side of the bearing away from the expansion drum, and a through cover is provided on the other side. The end cover and the through cover are used to limit the axial position of the outer ring of the bearing and both have clearance between them.

[0013] Optionally, the clearance is greater than 2 mm.

[0014] Optionally, a bearing cap is provided on the side of the end support shaft away from the expansion drum to limit the axial position of the bearing inner ring, and the other side of the bearing inner ring is limited in axial position by a shoulder provided on the end support shaft.

[0015] The beneficial effects of this invention are as follows: By reducing the overhang length of the free end of the clamping plate, reducing the lever arm of the clamping plate, and increasing the thickness and connection strength of the clamping plate, the problem of frequent damage to the existing winding fixed shaft ring due to its long lever arm and insufficient rigidity is solved, and the probability of damage to the bushing adjacent to the spline sleeve due to large impacts is reduced; by setting clearance between the end cover, the through cover and the outer ring of the bearing in the end support structure, the axial force generated when the drum support shaft expands and contracts is prevented from acting on the end support structure, thereby preventing frequent damage to the bearing, bearing cover, end cover, through cover and the corresponding clamping bolt due to excessive axial force, improving the stability of the hot rolling coiler operation, and increasing the utilization rate and production efficiency of the hot rolling coiler.

[0016] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of the winding machine drum support shaft;

[0019] Figure 2 This is an axial sectional view of the end support structure;

[0020] Figure 3 This is a schematic diagram of the installation of the winding fixed shaft assembly;

[0021] Figure 4 This is the front view of the cardboard.

[0022] Figure 5 This is a top view of the cardboard.

[0023] Figure 6 This is the left view of the cardboard.

[0024] Reference numerals: 1. End support shaft; 2. Expansion drum; 3. Bushing; 4. Splined sleeve; 5. Splined shaft; 6. Mandrel; 7. Bearing; 8. Through cover; 9. Inner clearance; 10. Outer clearance; 11. End cover; 12. Bearing gland; 13. Flange; 14. Clamping plate; 15. Threaded hole; 16. Slot; 17. Bolt clearance groove; 18. Lifting lug mounting bolt hole; 19. Bearing seat. Detailed Implementation

[0025] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] Please see Figures 1-6 A winding shaft assembly includes two relatively thick strip-shaped clamping plates 14 arranged opposite each other. One end of the clamping plate 14 is fixed to a flange 13 that is fixedly connected to the spline sleeve 4 of the winding support shaft, and the other end extends into an annular limiting groove opened on the spline shaft 5 of the winding support shaft. The end extending into the annular limiting groove does not exceed the axis of the spline shaft (5) and the distance is greater than zero. The end extending into the annular limiting groove has a clamping groove 16 that matches the spindle 6 of the winding support shaft. The connection point between the clamping plate 14 and the flange 13 is close to the spline shaft 5 of the winding support shaft.

[0029] In existing technologies, the winding fixed-shaft ring is a ring structure with two lugs. These lugs are fixed ends, resulting in a long lever arm. Furthermore, each lug has only two threaded holes, leading to insufficient connection strength, easy damage to the threaded holes, and easy bending, deformation, or even breakage of the fixed-shaft ring by axial force. This invention, by setting two relatively thick and wide clamping plates arranged opposite each other, reduces the overhang length of the free end of the clamping plates. Compared to the existing ring structure, this shortens the lever arm, effectively improving the rigidity of the clamping plates, reducing the probability of bending deformation and shearing, and decreasing the probability of damage to the bushing 3 adjacent to the splined sleeve 4 due to large impacts, thereby improving the stability of the equipment.

[0030] Optionally, the clamping plate 14 and the flange 13 are connected by two sets of screws, with the two sets of screws located on two concentric circles concentric with the flange 13. The set of screws on the splined shaft 5 near the drum support shaft has one more screw than the other set, and the two sets of screws are distributed alternately along the circumference of the flange 13, making the screw force more even. The set of screws on the splined shaft 5 near the drum support shaft has 3 screws, and the other set has 2 screws. The thickness of the clamping plate 14 extending towards the splined shaft 5 end of the drum support shaft is equal to the width of the annular limiting groove of the splined shaft 5. Matching; the end of the clamping plate 14 extending toward the splined shaft 5 of the drum support shaft has a groove 16 that matches the spindle 6 of the drum support shaft, and the groove 16 is arc-shaped; the clamping plate 14 is provided with lifting lugs in the circumference; the angle of the central angle corresponding to the groove 16 is not greater than 150°; the angle of the central angle corresponding to the groove 16 is 110°~120°; the clamping plate 14 is provided with bolt clearance grooves 17; the axis of the clamping plate 14 is also provided with lifting lugs to facilitate disassembly and hoisting, and the clamping plate 14 is threadedly connected to the lifting lugs through the lifting lug mounting bolt holes 18 provided thereon.

[0031] A hot rolling coiler includes a coil support shaft, the coil support shaft includes an end support shaft 1 and an expansion coil 2 connected to the end support shaft 1, the expansion coil 2 includes a mandrel 6, a splined shaft 5 sleeved on the mandrel 6, and a splined sleeve 4 sleeved on the splined shaft 5, a coiling fixed shaft assembly is provided between the splined shaft 5 and the splined sleeve 4 and is fixedly connected to a flange 13 fixedly connected to the splined sleeve 4, the coiling fixed shaft assembly is the coiling fixed shaft assembly as described above.

[0032] The end support shaft 1 is supported by an end support structure, which includes a bearing 7 connected to the end support shaft 1. The bearing 7 is mounted on a bearing housing 19. The bearing 7 has an end cap 11 on the side away from the expansion and contraction drum 2 and a through cap 8 on the other side. The end cap 11 and the through cap 8 are used to limit the axial position of the outer ring of the bearing and have clearances between them, namely an inner clearance 9 and an outer clearance 10. The clearances are greater than 2 mm and preferably 3 mm. The end support shaft 1 has a bearing pressure cap 12 on the side away from the expansion and contraction drum 2 to limit the axial position of the inner ring of the bearing. The other side of the inner ring of the bearing is limited in axial position by a shoulder provided on the end support shaft 1.

[0033] This invention provides clearance between the end cap 11, the through cap 8, and the outer ring of the bearing, thereby preventing the axial force generated by the expansion and contraction of the drum support shaft from acting on the end support structure. This prevents the bearing, bearing cover, end cap, through cap, and corresponding clamping bolts from being frequently damaged by excessive axial force, causing equipment failure and affecting production.

[0034] This invention solves the problems of frequent damage to the existing coiling fixed shaft ring due to its long lever arm and insufficient rigidity, as well as the frequent damage to the end support structure due to excessive axial force. It reduces the probability of damage to the bushing 3 adjacent to the spline sleeve 4 due to large impact, thereby improving the stability of the hot rolling coiler operation and increasing the utilization rate and production efficiency of the hot rolling coiler.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A winding fixed-axis assembly, characterized in that: Includes two opposing clamping plates (14), one end of which is fixed to a flange (13) that is fixedly connected to the spline sleeve (4) of the drum support shaft, and the other end extends into an annular limiting groove opened on the spline shaft (5) of the drum support shaft. The end extending into the annular limiting groove does not exceed the axis of the spline shaft (5) and the distance is greater than zero. The end extending into the annular limiting groove has a clamping groove (16) that matches the spindle (6) of the drum support shaft. The connection point between the clamping plate (14) and the flange (13) is close to the spline shaft (5) of the drum support shaft. The plate (14) and the flange (13) are connected by two sets of screws, which are located on two concentric circles concentric with the flange (13); The number of screws in one group of splined shafts (5) near the drum support shaft is one more than that in the other group, and the two groups of screws are distributed alternately along the circumference of the flange (13).

2. The winding fixed-axis assembly according to claim 1, characterized in that: The angle of the central angle corresponding to the slot (16) is 110°~120°.

3. The winding fixed-axis assembly according to claim 1, characterized in that: The number of screws in one set of the splined shaft (5) near the drum support shaft is 3, and the number of screws in the other set is 2.

4. A winding fixed-axis assembly according to claim 1, characterized in that: The card plate (14) is provided with lifting lugs in the circumference.

5. A hot-rolled coiling machine, comprising a coil support shaft, the coil support shaft comprising an end support shaft (1) and an expanding coil (2) connected to the end support shaft (1), the expanding coil (2) comprising a mandrel (6), a splined shaft (5) sleeved on the mandrel (6), and a splined sleeve (4) sleeved on the splined shaft (5), the splined sleeve (4) matching the splined shaft (5), a flange (13) mounted on the splined sleeve (4), and a coiling fixed shaft assembly fixed on the flange (13), characterized in that: The winding stator assembly is used as described in any one of claims 1 to 4.

6. A hot-rolled coiler according to claim 5, characterized in that: The end support shaft (1) is supported by the end support structure, which includes a bearing (7) connected to the end support shaft (1). The bearing (7) is mounted on the bearing seat (19). The bearing (7) has an end cap (11) on one side away from the expansion and contraction drum (2) and a through cap (8) on the other side. The end cap (11) and the through cap (8) are used to limit the axial position of the outer ring of the bearing and have clearance between them.

7. A hot-rolled coiler according to claim 5, characterized in that: The clearance is greater than 2mm.

8. A hot-rolled coiler according to claim 5, characterized in that: The end support shaft (1) is provided with a bearing cap (12) on the side away from the expansion drum (2) to restrict the axial position of the bearing inner ring, and the other side of the bearing inner ring is restricted in axial position by a shoulder provided on the end support shaft (1).

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