A reinforced bearing block for a steel rolling straightener

Abstract

The utility model discloses a kind of reinforced bearing seat for steel straightening machine, including integrally formed piece (1) and two pressing plate (2);Integrally formed piece (1) includes bottom plate (10), two parallel support plates (11) are equipped on bottom plate (10), straightening roll (3) is equipped between two support plates (11), the both ends of straightening roll (3) are equipped with bearing (4), mounting hole (12) that is matched with bearing (4) is equipped on support plate (11), the inner side end of mounting hole (12) is formed to the first limit ring (13) that the outer ring of bearing (4) is axially limited by extending radially inwards;Two pressing plate (2) are respectively located the outer side end of two mounting hole (12), pressing plate (2) is screw connected with support plate (11), the inner side of pressing plate (2) is equipped with the second limit ring (20) that the outer ring of bearing (4) is axially limited.The utility model has the advantages of higher bearing capacity and can avoid straightening roll bite steel.

Description

Technical Field

[0001] This utility model belongs to the field of steel rolling straightening machines, and particularly relates to a reinforced bearing housing for steel rolling straightening machines. Background Technology

[0002] The steel rolling straightening machine is a key piece of equipment on the steel finishing line. Its core function is to straighten the rolled steel to eliminate defects such as bending and warping, ensuring the flatness quality of the product. The straightening machine applies repeated bending stress to the steel through several straightening rollers, causing plastic deformation to achieve the straightening purpose. Both ends of the straightening rollers are equipped with double-row self-aligning roller bearings, and the two bearings are connected to the frame of the steel rolling straightening machine through the same bearing housing. During the straightening process, the bearing housing needs to withstand huge radial loads, impact loads, and alternating stresses.

[0003] Currently, traditional straightening machines mostly use split-type bearing housings. The structure includes a base plate, on which two support plates are screwed together. Two positioning pins are provided between the support plates and the base plate. A cover plate is screwed together on the support plate, and a circular mounting hole is formed between the support plate and the cover plate. The bearing is installed in the mounting hole.

[0004] Existing bearing housings have the following inherent defects: Low load-bearing capacity: When straightening high-strength, large-size steel, the split structure is prone to elastic deformation or even plastic deformation due to its numerous joint surfaces and poor overall structural integrity. This can lead to misalignment of bearing holes, making it unable to withstand greater straightening forces and limiting further improvement in equipment capacity.

[0005] Easily bites steel: When the bearing housing deforms under excessive load, it will cause the parallelism of the straightening roller axis to exceed the tolerance. The straightening roller will cause abnormal wear and scratches on the steel surface, forming a "biting" defect, which seriously affects the surface quality of high-end steel.

[0006] Therefore, existing bearing housings have the drawbacks of low load-bearing capacity and a tendency to cause straightening rollers to bite into the steel. Utility Model Content

[0007] The purpose of this invention is to provide a reinforced bearing housing for a steel rolling straightening machine. This invention has the advantages of high load-bearing capacity and preventing the straightening rollers from biting into the steel.

[0008] The technical solution of this utility model is: a reinforced bearing seat for a steel rolling straightening machine, comprising an integrally formed part and two pressure plates; The integrally molded part includes a base plate, on which two parallel support plates are provided. A straightening roller is provided between the two support plates. Bearings are provided at both ends of the straightening roller. The support plates are provided with mounting holes that mate with the bearings. The inner end of the mounting hole extends radially inward to form a first limiting ring that axially limits the outer ring of the bearing. Two pressure plates are located at the outer ends of the two mounting holes respectively. The pressure plates are connected to the support plate with screws. The inner side of the pressure plates is provided with a second limiting ring for axially limiting the outer ring of the bearing.

[0009] In the aforementioned reinforced bearing housing for a steel rolling straightening machine, the straightening roller includes a straightening sleeve, and a rotating shaft is provided on the inner side of the straightening sleeve. The end of the rotating shaft passes through the inner hole of the bearing, and the straightening sleeve is connected to the rotating shaft by a flat key.

[0010] In the aforementioned reinforced bearing housing for a steel rolling straightening machine, a third limiting ring is provided between the inner ring of the bearing and the straightening sleeve, through which the rotating shaft passes. A limiting plate is provided on the inner side of the second limiting ring, and the limiting plate is connected to the end face of the rotating shaft by screws. The limiting plate fits against the inner ring of the bearing.

[0011] In the aforementioned reinforced bearing housing for a steel rolling straightening machine, the base plate is circular, with a positioning hole at the center of the bottom surface and multiple circumferentially distributed through holes.

[0012] In the aforementioned reinforced bearing housing for a steel rolling straightening machine, the through hole is an arc-shaped hole, and the center of the arc-shaped hole coincides with the center of the positioning hole.

[0013] In the aforementioned reinforced bearing housing for a steel rolling straightening machine, the bearing is a double-row self-aligning roller bearing.

[0014] Compared with existing technologies, this invention integrates the base plate and support plate into a single part, eliminates the cover plate, and directly creates mounting holes on the support plate. This reduces the number of mating surfaces, improves overall structural integrity, and significantly enhances strength, resulting in greater load-bearing capacity. The bearing housing is less prone to deformation under heavy loads, preventing the parallelism of the straightening roller axis from exceeding tolerances and avoiding abnormal wear and scratches on the steel surface, thus preventing "biting" defects. Therefore, this invention has the advantages of high load-bearing capacity and the ability to prevent straightening rollers from biting the steel.

[0015] By setting a limiting plate and a third limiting ring, when the straightening roller is subjected to axial force in any direction, the bearings at both ends are subjected to force simultaneously, the two support plates are subjected to force simultaneously, the force on the bearing seat is dispersed, making it less prone to deformation and further improving the load-bearing capacity. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of this utility model.

[0017] Figure 2 This is a bottom view of the base plate.

[0018] Figure 3 This is a left-view diagram of the straightening sleeve.

[0019] Figure 4 This is a cross-sectional schematic diagram of the shaft.

[0020] The markings in the attached diagram are as follows: 1-One-piece molded part, 2-Pressure plate, 3-Straightening roller, 4-Bearing, 5-Third limiting ring, 10-Base plate, 11-Support plate, 12-Mounting hole, 13-First limiting ring, 14-Positioning hole, 15-Through hole, 20-Second limiting ring, 30-Straightening sleeve, 31-Rotating shaft, 32-Flat key, 33-Keyway, 34-Limiting plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example: A reinforced bearing housing for a steel rolling straightening machine, such as Figure 1 As shown, it includes a one-piece steel component 1 and two circular pressure plates 2.

[0023] The integral molded part 1 is made of ZG35CrMo or equivalent high-strength alloy steel, which is then precision machined. Alternatively, it can be forged and then machined to form a rigid block without a parting surface.

[0024] The integrally molded part 1 includes a circular base plate 10, on which two parallel support plates 11 are provided. A straightening roller 3 is provided between the two support plates 11, and bearings 4 are provided at both ends of the straightening roller 3. The bearings 4 are double-row self-aligning roller bearings. The support plates 11 are provided with mounting holes 12 that mate with the bearings 4. The inner end of the mounting hole 12 extends radially inward to form a first limiting ring 13 that axially limits the outer ring of the bearing 4. The base plate 10, support plates 11, and first limiting ring 13 are formed on the same part to form the integrally molded part 1.

[0025] Two pressure plates 2 are located at the outer ends of the two mounting holes 12, respectively. The pressure plates 2 are screwed to the support plate 11. The inner side of the pressure plates 2 is provided with a second limiting ring 20 for axially limiting the outer ring of the bearing 4. The pressure plates 2 and the second limiting ring 20 are formed on the same part.

[0026] The straightening roller 3 includes a straightening sleeve 30, with a rotating shaft 31 on its inner side. The end of the rotating shaft 31 passes through the inner hole of the bearing 4, and the straightening sleeve 30 is connected to the rotating shaft 31 via a flat key 32. Both the inner hole of the straightening sleeve 30 and the outer circumferential surface of the rotating shaft 31 are provided with keyways 33 that mate with the flat key 32. Through structural optimization of the straightening roller 3, it can be easily disassembled and assembled on the bearing housing.

[0027] A third limiting ring 5 is provided between the inner ring of the bearing 4 and the straightening sleeve 30, through which the rotating shaft 31 passes. Both the inner ring of the bearing 4 and the straightening sleeve 30 are in contact with the surface of the third limiting ring 5. A limiting plate 34 is provided on the inner side of the second limiting ring 20. The limiting plate 34 is connected to the end face of the rotating shaft 31 by screws. The limiting plate 34 fits against the inner ring of the bearing 4.

[0028] The bottom surface of the base plate 10 has a positioning hole 14 at its center, and four circumferentially evenly distributed through holes 15 on the base plate 10. The through holes 15 are arc-shaped holes, and the center of the arc-shaped holes coincides with the center of the positioning hole 14.

[0029] Preferably, a lifting hole can also be provided on the base plate 10, so that the bearing seat can be lifted through the lifting hole during maintenance.

[0030] When the straightening sleeve 30 is worn and needs to be replaced, first remove the pressure plate 2, then remove the limit plate 34, and axially push out the rotating shaft 31 to remove the straightening sleeve 30.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

Claims

1. A reinforced bearing housing for a steel rolling straightening machine, characterized in that: It includes an integrally molded part (1) and two pressure plates (2); The integrally molded part (1) includes a base plate (10), on which two parallel support plates (11) are provided, and a straightening roller (3) is provided between the two support plates (11). Both ends of the straightening roller (3) are provided with bearings (4). The support plate (11) is provided with mounting holes (12) that cooperate with the bearings (4). The inner end of the mounting hole (12) extends radially inward to form a first limiting ring (13) that axially limits the outer ring of the bearing (4). Two pressure plates (2) are located at the outer ends of two mounting holes (12) respectively. The pressure plates (2) are screwed to the support plate (11). The inner side of the pressure plates (2) is provided with a second limiting ring (20) for axially limiting the outer ring of the bearing (4).

2. The reinforced bearing housing for a steel rolling straightening machine according to claim 1, characterized in that: The straightening roller (3) includes a straightening sleeve (30), and a rotating shaft (31) is provided on the inner side of the straightening sleeve (30). The end of the rotating shaft (31) passes through the inner hole of the bearing (4), and the straightening sleeve (30) is connected to the rotating shaft (31) by a flat key (32).

3. The reinforced bearing housing for a steel rolling straightening machine according to claim 2, characterized in that: A third limiting ring (5) is provided between the inner ring of the bearing (4) and the straightening sleeve (30), through which the rotating shaft (31) passes. A limiting plate (34) is provided on the inner side of the second limiting ring (20). The limiting plate (34) is connected to the end face screw of the rotating shaft (31). The limiting plate (34) fits against the inner ring of the bearing (4).

4. The reinforced bearing housing for a steel rolling straightening machine according to claim 1, characterized in that: The base plate (10) is circular, and a positioning hole (14) is provided at the center of the bottom surface of the base plate (10). The base plate (10) is provided with a plurality of circumferentially evenly distributed through holes (15).

5. The reinforced bearing housing for a steel rolling straightening machine according to claim 4, characterized in that: The through hole (15) is an arc-shaped hole, and the center of the arc-shaped hole coincides with the center of the positioning hole (14).

6. The reinforced bearing housing for a steel rolling straightening machine according to claim 1, characterized in that: The bearing (4) is a double-row self-aligning roller bearing.

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