Vertical roll for rolling steel billets

Abstract

The utility model discloses a vertical roll for rolling a steel billet, which comprises a roll core, an upper self-aligning bearing, an upper bearing seat, an upper bearing backstop component, a lower self-aligning bearing, a lower bearing seat, a shaft sleeve, an eccentric mechanism and a lower bearing backstop component, the eccentric mechanism comprises an eccentric wheel and a driving wheel, the driving wheel is installed in the upper bearing seat, and the shaft sleeve, the eccentric wheel and the upper self-aligning bearing are sequentially and axially installed on the upper connecting shaft. And the upper bearing stop assembly is axially mounted on the upper connecting shaft and is stopped at the end part of the eccentric wheel. According to the vertical roll for billet rolling, the eccentric mechanism is arranged to drive the roll core to deflect, so that the vertical roll deflects, the vertical roll is adapted to a working surface by adjusting the angle of the vertical roll, the abrasion surface becomes uniform, and the service life of the vertical roll is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of steel production, in particular to a vertical roller for rolling steel billets. Background Art

[0002] The vertical roller is located between the dephosphorization machine and the first rolling mill in the thin slab continuous casting and rolling production line, and is used for slab side guide and edge rolling. The vertical roller is installed vertically, and its radial direction is parallel to the rolling direction of the steel billet. Since the vertical roller cannot be replaced online, under the requirements of high-strength steel production, its service life is long, and the contact position between the steel billet and the vertical roller is always kept at the same position, resulting in wear and tear always at the same position on the working surface of the vertical roller. After a long working time, under the action of the high-temperature steel billet, the working surface of the vertical roller will form deep grooves. Due to the existence of the grooves, the working surface only accounts for about 60% of the entire roller surface width, resulting in low utilization of the working surface of the vertical roller, which greatly reduces the service life of the vertical roller and increases maintenance costs.

[0003] In view of this, it is necessary to propose a vertical roll for billet rolling to solve the above-mentioned defects. Utility Model Content

[0004] The main purpose of the utility model is to provide a vertical roller for rolling steel billets, aiming to solve the problem that grooves appear on the existing vertical rollers after long-term use, resulting in a small proportion of the working surface and low utilization rate of the working surface.

[0005] To achieve the above-mentioned purpose, the utility model provides a vertical roller for rolling steel billets, comprising a roller core, an upper self-aligning bearing, a sleeve, an upper bearing seat, an upper bearing stop assembly, a lower self-aligning bearing, a lower bearing seat, a sleeve, an eccentric mechanism and a lower bearing stop assembly, wherein the two ends of the roller core are respectively provided with an upper connecting shaft and a lower connecting shaft, the lower self-aligning bearing is axially mounted on the lower connecting shaft and fixed in the lower bearing seat, the lower bearing stop assembly is axially stopped at the end of the lower self-aligning bearing, the eccentric mechanism comprises an eccentric wheel and a driving wheel drivingly connected to the eccentric wheel, the driving wheel is mounted in the upper bearing seat, the sleeve, the eccentric wheel and the upper self-aligning bearing are axially mounted on the upper connecting shaft and located in the upper bearing seat in sequence, and the upper bearing stop assembly is axially mounted on the upper connecting shaft and stopped at the end of the eccentric wheel.

[0006] Preferably, the eccentric wheel is an eccentric gear, the driving wheel is a gear, and the eccentric gear is externally meshed with the gear.

[0007] Preferably, the eccentric wheel is an eccentric circular arc gear, and the driving wheel is a circular arc gear.

[0008] Preferably, the eccentric wheel comprises an inner ring and a gear ring radially protruding from the inner ring, the upper self-aligning bearing is axially sleeved outside the inner ring, and the gear ring is meshed with the driving wheel.

[0009] Preferably, the upper bearing stop assembly includes a retaining ring, a snap ring, an inner pressure cover and an outer pressure cover, the retaining ring is sleeved on the upper connecting shaft, the inner pressure cover is axially sleeved outside the retaining ring, and the retaining ring and the inner pressure cover are respectively and assembled at the ends of the eccentric wheel, the snap ring is axially installed at the end of the inner pressure cover, and the outer pressure cover is fixed on the upper bearing seat and pressed on the end of the driving wheel to fix the driving wheel.

[0010] Preferably, the outer pressure cover is installed in coordination with the outer contour of the inner pressure cover.

[0011] Preferably, the inner gland is circular, the outer gland is semicircular, and the notch of the semicircular outer gland matches the outer contour of the inner gland.

[0012] Preferably, the lower bearing stop assembly includes an inner end cover and a pressure cover, the inner end cover is fixed to the end of the lower connecting shaft and stops at the end of the lower self-aligning bearing, and the pressure cover is fixed to the end of the lower bearing seat and stops at the end of the lower self-aligning bearing.

[0013] Compared with the prior art, the vertical roller for steel billet rolling provided by the utility model has the following beneficial effects:

[0014] The vertical roller for rolling steel billets provided by the utility model has a profile curve of the eccentric wheel changed from the center of the eccentric wheel during rotation, so that the axis of the upper connecting shaft installed in the eccentric wheel is pushed by the eccentric wheel. Therefore, the roller core is driven to deflect through the eccentric mechanism, so that the vertical roller is deflected, so as to achieve the purpose of adapting to the working surface by adjusting the vertical roller angle, so that the wear surface of the vertical roller becomes uniform without grooves, which greatly improves the service life of the vertical roller and reduces the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 A three-dimensional diagram of the vertical roller for rolling a steel billet provided by the utility model;

[0017] Figure 2 for Figure 1 A top view of the vertical rolls for rolling the steel billet is shown;

[0018] Figure 3 for Figure 2 A cross-sectional view of the vertical rolls for rolling a steel billet along AA is shown;

[0019] Figure 4 for Figure 3 An enlarged view of section A is shown;

[0020] Figure 5 for Figure 1 The schematic diagram of the vertical rolls for billet rolling is shown after they are offset.

[0021] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0026] Please refer to Figures 1 to 5The utility model provides a vertical roller for rolling steel billets. The vertical roller for rolling steel billets comprises a roller core 1, an upper self-aligning bearing 2, an upper bearing seat 3, an upper bearing stop assembly 4, a lower self-aligning bearing 5, a lower bearing seat 6, a sleeve 7, an eccentric mechanism 8 and a lower bearing stop assembly 9. The two ends of the roller core 1 are respectively provided with an upper connecting shaft 10 and a lower connecting shaft 11, the lower self-aligning bearing 5 is axially mounted on the lower connecting shaft 11 and fixed in the lower bearing seat 6, the lower bearing stop assembly 9 is axially stopped at the end of the lower self-aligning bearing 5, the eccentric mechanism 8 comprises an eccentric wheel 81 and a driving wheel 83 connected to the eccentric wheel 81, the driving wheel 83 is mounted in the upper bearing seat 3, the sleeve 7, the eccentric wheel 81 and the upper self-aligning bearing 2 are axially mounted on the upper connecting shaft 10 in sequence and are located in the upper bearing seat 3, the upper bearing stop assembly 4 is axially mounted on the upper connecting shaft 10 and stopped at the end of the eccentric wheel 81. Since the distance between the contour curve of the eccentric wheel 81 and the center of the eccentric wheel 81 changes during the rotation, the upper connecting shaft 10 installed in the eccentric wheel 81 is pushed by the eccentric wheel 81. Therefore, the roller core 1 is driven to deflect through the eccentric mechanism 8, so that the vertical roller as a whole deflects, thereby achieving the purpose of adapting to the working surface by adjusting the vertical roller angle, making the wear surface of the vertical roller uniform without grooves, greatly improving the service life of the vertical roller and reducing the maintenance cost of the equipment.

[0027] Here, it needs to be explained that, when the eccentric adjustment is not performed, the vertical roller rotates in the shaft sleeve 7 and the lower self-aligning bearing 5, and the eccentric mechanism 8 does not rotate synchronously. When the eccentric adjustment is required, the vertical roller does not stop rotating. At this time, the rotation of the eccentric mechanism 8 occurs on the upper self-aligning bearing 2, and the lower self-aligning bearing 5 makes adaptive adjustments. The rotation of the vertical roller is continuous, and the rotation of the eccentric mechanism is intermittent, but the two will not interfere with each other.

[0028] Specifically, in this embodiment, the eccentric wheel 81 is an eccentric gear, the driving wheel 83 is a gear, and the eccentric gear and the gear are externally meshed. The driving wheel 83 rotates to drive the eccentric gear to move. Under the action of eccentricity, the eccentric wheel 81 drives the roller core 1 to deviate, thereby adjusting the angle of the roller core 1. It can be understood that Figure 1 As shown, the outer shaft of the roller core 1 is formed with a billet groove for introducing and pressing the billet, and the grooves caused by wear are formed on the billet groove. By adjusting the angle of the roller core 1, the wear surface will change and will not always be in the situation of being worn in one position. Adjustment after a period of use can make the wear surface more uniform, thereby achieving the purpose of extending the service life of the vertical roller.

[0029] The eccentric wheel 81 is an eccentric circular arc gear, the driving wheel 83 is a circular arc gear, a transmission shaft is mounted on the circular arc gear, and the transmission shaft is connected to the motor. The center of the eccentric circular arc gear is not at the rotation point, and the outer contour of the eccentric circular arc gear is offset to its center, thereby pushing the axis of the upper connecting shaft 10 located at its center to deviate at an angle. It should be noted that the ends of the upper connecting shaft 10 and the lower connecting shaft 11 are both connected to the universal shaft, so the vertical roller can adjust the offset angle. Figure 5 As shown, the axis is C in the unadjusted state and the axis is D after adjustment.

[0030] Further, the eccentric wheel 81 includes an inner ring 811 and a gear ring 813 radially protruding from the inner ring 811, the upper self-aligning bearing is axially sleeved outside the inner ring 811, and the gear ring 813 is meshed with the driving wheel 83. The gear ring 813 is installed in cooperation with the upper self-aligning bearing, and the protruding gear ring 813 is meshed with the circular arc gear to realize transmission.

[0031] Specifically, in this embodiment, the upper bearing stop assembly 4 includes a retaining ring 41, a retaining ring 43, an inner pressure cover 45 and an outer pressure cover 47. The retaining ring 41 is sleeved on the upper connecting shaft 10, and the inner pressure cover 45 is axially sleeved outside the retaining ring 41, and the retaining ring and the inner pressure cover are respectively assembled at the ends of the eccentric wheel 81, the retaining ring 43 is axially installed at the end of the inner pressure cover 45, and the outer pressure cover 47 is fixed on the upper bearing seat 3 and pressed on the end of the driving wheel 83 to fix the driving wheel 83, so that the eccentric mechanism 8 can be fixed, the structure is stable, and the transmission is more reliable.

[0032] Further, the outer pressure cover 47 is installed in accordance with the outer contour of the inner pressure cover 45. The outer pressure cover 47 is located at the outer periphery of the inner pressure cover 45, the inner pressure cover 45 is circular, and the outer pressure cover 47 is semicircular. The notch of the semicircular outer pressure cover 47 matches the outer contour of the inner pressure cover 45 to make the structural assembly more compact, thereby improving the transmission stability of the eccentric mechanism 8.

[0033] Specifically, the lower bearing stop assembly 9 includes an inner end cover 91 and a pressure cover 93. The inner end cover 91 is fixed to the end of the lower connecting shaft 11 and stops at the end of the lower self-aligning bearing 5. The pressure cover 93 is fixed to the end of the lower bearing seat 6 and stops at the end of the lower self-aligning bearing 5 to fix the lower self-aligning bearing 5.

[0034] The vertical roller for rolling steel billets provided by the utility model has a profile curve of the eccentric wheel 81 that changes in distance from the center of the eccentric wheel 81 during rotation, so that the upper connecting shaft 10 installed in the eccentric wheel 81 is pushed by the eccentric wheel 81. Therefore, the roller core 1 is driven to deflect through the eccentric mechanism 8, so that the vertical roller is deflected, thereby achieving the purpose of adapting to the working surface by adjusting the vertical roller angle, making the wear surface of the vertical roller uniform without grooves, greatly improving the service life of the vertical roller and reducing the maintenance cost of the equipment.

[0035] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vertical roll for rolling a steel billet, characterized in that: It includes a roller core, an upper self-aligning bearing, an upper bearing seat, an upper bearing stop assembly, a lower self-aligning bearing, a lower bearing seat, a sleeve, an eccentric mechanism and a lower bearing stop assembly, wherein the two ends of the roller core are respectively provided with an upper connecting shaft and a lower connecting shaft, the lower self-aligning bearing is axially mounted on the lower connecting shaft and fixed in the lower bearing seat, the lower bearing stop assembly is axially stopped at the end of the lower self-aligning bearing, the eccentric mechanism includes an eccentric wheel and a driving wheel driven and connected to the eccentric wheel, the driving wheel is mounted in the upper bearing seat, the sleeve, the eccentric wheel and the upper self-aligning bearing are axially mounted on the upper connecting shaft in sequence and are located in the upper bearing seat, and the upper bearing stop assembly is axially mounted on the upper connecting shaft and stopped at the end of the eccentric wheel.

2. The vertical roll for rolling a steel billet according to claim 1, characterized in that: The eccentric wheel is an eccentric gear, the driving wheel is a gear, and the eccentric gear is externally meshed with the gear.

3. The vertical roll for rolling a steel billet according to claim 2, characterized in that: The eccentric wheel is an eccentric circular arc gear, and the driving wheel is a circular arc gear.

4. The vertical roll for rolling a steel billet according to claim 3, characterized in that: The eccentric wheel comprises an inner ring and a gear ring radially protruding from the inner ring, the upper self-aligning bearing is axially sleeved outside the inner ring, and the gear ring is meshed with the driving wheel.

5. The vertical roll for rolling a steel billet according to claim 1, characterized in that: The upper bearing stop assembly includes a retaining ring, a snap ring, an inner pressure cover and an outer pressure cover, the retaining ring is sleeved on the upper connecting shaft, the inner pressure cover is axially sleeved outside the retaining ring, and the retaining ring and the inner pressure cover are respectively and assembled at the ends of the eccentric wheel, the snap ring is axially installed at the end of the inner pressure cover, the outer pressure cover is fixed on the upper bearing seat, and is pressed on the end of the driving wheel to fix the driving wheel.

6. The vertical roll for rolling a steel billet according to claim 5, characterized in that: The outer pressure cover is installed in coordination with the outer contour of the inner pressure cover.

7. The vertical roll for rolling a steel billet according to claim 6, characterized in that: The inner gland is circular, the outer gland is semicircular, and the notch of the semicircular outer gland matches the outer contour of the inner gland.

8. The vertical roll for rolling a steel billet according to claim 1, characterized in that: The lower bearing stop assembly includes an inner end cover and a pressure cover, wherein the inner end cover is fixed to the end of the lower connecting shaft and stops at the end of the lower self-aligning bearing, and the pressure cover is fixed to the end of the lower bearing seat and stops at the end of the lower self-aligning bearing.

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