A high-speed wire rod mill finishing rolling guide roller shaft
By designing structures such as oil-slinging rings and sealing rings on the guide roller shaft, the problems of uneven lubrication and oil circuit blockage on the guide roller shaft are solved, achieving uniform lubrication and preventing premature failure, thereby improving the service life of the bearing and the stability of production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAOTOU IRON & STEEL (GROUP) CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
The existing guide roller shaft is unevenly lubricated under high-speed rotation, which leads to premature failure of the balls and inner and outer rings due to dry friction. The external oil passage is easily contaminated and blocked, affecting the bearing life and production continuity.
A structure including a guide roller shaft body, a shaft body, an oil slinger ring, a sealing ring, and a filter screen is designed. Through the oil and gas channel and the inclined oil distribution groove, the bearing balls and raceway are evenly covered under high-speed rotation. Combined with the sealing ring, water vapor and dust are isolated to prevent oil circuit blockage.
This achieves uniform lubrication of the bearings, avoids dry friction and oil circuit blockage, improves lubrication efficiency, extends bearing life, and ensures production continuity.
Smart Images
Figure CN224272727U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of guide roller technology, specifically relating to a high-speed wire rod mill finishing rolling guide roller shaft. Background Technology
[0002] Guide rollers are devices installed before and after the roll passes during the section steel rolling process to help the rolled workpiece enter and exit the roll passes accurately and stably in a predetermined direction and state. Guide rollers are widely used in the section steel rolling process, especially in the high-speed wire rod finishing process.
[0003] In the finishing section of high-speed wire rod mills (especially the Morgan 5th generation model), rolling guides are key equipment to ensure stable workpiece bite. As the core component supporting the guide roller bearings, the lubrication reliability of the guide roller shaft directly determines the bearing life and production continuity.
[0004] In the existing technology, the mainstream guide roller shaft usually uses external oil pipes to directly spray the bearing for lubrication. Under high-speed rotation, the oil and gas cannot penetrate the bearing raceway, resulting in uneven lubrication between the balls and the inner and outer rings. Local dry friction leads to early failure. In addition, the external oil circuit is easily contaminated by cooling water or iron oxide scale, and the risk of oil hole blockage is high. To address this, we propose a high-speed wire rod mill finishing rolling guide roller shaft. Utility Model Content
[0005] To address the problems mentioned in the background section, where existing mainstream guide roller shafts typically use external oil pipes to directly spray the bearings for lubrication, resulting in uneven lubrication between the balls and inner / outer rings under high-speed rotation, leading to localized dry friction and premature failure, and further exacerbating the issue that external oil passages are easily contaminated by cooling water or iron oxide scale, posing a high risk of oil hole blockage, this invention provides a high-speed wire rod mill finishing rolling guide roller shaft.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-speed wire rod mill finishing rolling guide roller shaft, comprising a guide roller shaft body and a shaft body, wherein the shaft body is installed below the guide roller shaft body, and an axially penetrating oil and gas channel is provided inside the shaft body, one end of the oil and gas channel is connected to an oil injection hole provided on the side wall of the guide roller shaft body, and the other end of the oil and gas channel extends to the middle of the shaft body and is connected to an oil outlet channel;
[0007] An oil slinger ring is fitted on the outer side of the shaft, and a guide roller bearing is installed inside the oil slinger ring. A sealing ring is fixed at the upper end of the shaft, and a filter screen is engaged inside the sealing ring.
[0008] As a preferred embodiment of the high-speed wire rod mill finishing rolling guide roller shaft of this utility model, a plurality of positioning rods are fixed below the guide roller shaft body, the guide roller shaft body and the shaft body are connected through the positioning rods and fixed by bolts.
[0009] As a preferred embodiment of the high-speed wire rod mill finishing rolling guide roller shaft of this utility model, both the upper and lower ends of the oil-throwing ring are fixed with fixing sleeves, and the outer side of the shaft is fixed with a limiting plate. The oil-throwing ring is engaged with the shaft through the fixing sleeves and the limiting plate.
[0010] As a preferred embodiment of the high-speed wire rod mill finishing rolling guide roller shaft of this utility model, one end of the oil injection hole is provided with a removable sealing plug, and the oil outlet channel is an annular groove structure.
[0011] As a preferred embodiment of the high-speed wire rod mill finishing rolling guide roller shaft of this utility model, the oil throwing ring is connected to the oil outlet channel, and the upper and lower surfaces of the oil throwing ring are each provided with three oblique oil distribution grooves, and the oil distribution grooves are evenly distributed along the circumferential direction.
[0012] As a preferred embodiment of the high-speed wire rod mill finishing rolling guide roller shaft of this utility model, the filter screen is a stainless steel sintered filter element, and the position of the filter screen corresponds to that of the oil and gas channel.
[0013] As a preferred embodiment of the high-speed wire rod mill finishing rolling guide roller shaft of this utility model, the sealing ring is made of fluororubber.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In this application, the oil outlet channel of the oil-slinging ring is connected to the inclined oil distribution groove. Under the action of high-speed rotation centrifugal force, the oil and gas are forced to evenly cover the bearing balls and raceways, preventing dry friction in blind areas. The oil and gas reach the central oil outlet channel through the oil and gas channel and are directly injected into the core area of the bearing, avoiding waste of external oil circuits, improving lubrication efficiency, and the filter screen intercepts impurities. At the same time, the sealing ring isolates water vapor and dust, preventing oil circuit blockage and bearing corrosion, preventing uneven lubrication, and avoiding the problems of early failure caused by local dry friction and high risk of oil hole blockage. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the external structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention;
[0019] Figure 4 This is a schematic diagram of the oil-sparking ring in this utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the central shaft of this utility model.
[0021] In the diagram: 1. Guide roller shaft body; 2. Shaft body; 3. Positioning rod; 4. Limiting plate; 5. Oil slinger ring; 6. Fixing sleeve; 7. Oil injection hole; 8. Sealing plug; 9. Oil and gas passage; 10. Oil outlet passage; 11. Guide roller bearing; 12. Sealing ring; 13. Filter screen. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example 1
[0024] like Figures 1-5 As shown;
[0025] A high-speed wire rod mill finishing rolling guide roller shaft includes a guide roller shaft body 1 and a shaft body 2. The shaft body 2 is installed below the guide roller shaft body 1. The shaft body 2 has an axially penetrating oil and gas channel 9 inside. One end of the oil and gas channel 9 is connected to an oil injection hole 7 located on the side wall of the guide roller shaft body 1. The other end of the oil and gas channel 9 extends to the middle of the shaft body 2 and is connected to an oil outlet channel 10. An oil sling ring 5 is sleeved on the outside of the shaft body 2. A guide roller bearing 11 is installed inside the oil sling ring 5. A sealing ring 12 is fixed at the upper end of the shaft body 2. A filter screen 13 is engaged inside the sealing ring 12.
[0026] In this implementation plan: the oil outlet channel 10 of the oil slinger 5 is connected to the inclined oil distribution groove. Under the action of high-speed rotation centrifugal force, the oil and gas are forced to evenly cover the bearing balls and raceways, preventing dry friction in blind areas. The oil and gas reach the central oil outlet channel 10 through the oil and gas channel 9 and are directly injected into the core area of the bearing, avoiding waste of external oil circuits and improving lubrication efficiency. The filter screen 13 intercepts impurities, while the sealing ring 12 isolates water vapor and dust, preventing oil circuit blockage and bearing corrosion.
[0027] Furthermore:
[0028] In an optional embodiment, a plurality of positioning rods 3 are fixed below the guide roller shaft body 1, and the guide roller shaft body 1 and the shaft body 2 are connected through the positioning rods 3 and fixed by bolts.
[0029] In this implementation plan: the positioning rod 3 ensures that the guide arm oil circuit and the oil injection hole 7 are accurately connected to avoid oil and gas leakage.
[0030] Furthermore:
[0031] In an optional embodiment, the upper and lower ends of the oil slinger 5 are fixed with fixing sleeves 6, and the outer side of the shaft 2 is fixed with a limiting plate 4. The oil slinger 5 is engaged with the shaft 2 through the fixing sleeves 6 and the limiting plate 4.
[0032] In this implementation scheme, the oil slinger 5 can be engaged with the shaft 2 to prevent axial movement of the oil slinger 5 when it rotates at high speed, and to maintain a constant distance between the oil distribution groove and the bearing.
[0033] Furthermore:
[0034] In an optional embodiment, one end of the oil injection hole 7 is provided with a removable sealing plug 8, and the oil outlet channel 10 has an annular groove structure.
[0035] In this implementation plan: the seal block 8 seals the oil passage of the shaft 2, the oil injection hole 7 connects the external oil passage and the oil-gas passage 9, the oil-gas passage 9 axially passes through the oil passage and directly connects to the oil outlet passage 10.
[0036] Furthermore:
[0037] In an optional embodiment, the oil-slinging ring 5 is connected to the oil outlet channel 10, and the upper and lower surfaces of the oil-slinging ring 5 are each provided with three oblique oil-distributing grooves, which are evenly distributed along the circumferential direction.
[0038] In this implementation plan: the inclined oil distribution groove on the oil throwing ring 5 forces oil and gas to cover the bearing raceway 360° without dead angles under the action of centrifugal force, thus solving the problem of uneven lubrication.
[0039] Furthermore:
[0040] In an optional embodiment, the filter screen 13 is a sintered stainless steel filter element, and the filter screen 13 corresponds to the position of the oil and gas passage 9.
[0041] In this implementation plan:
[0042] Furthermore:
[0043] In an optional embodiment, the sealing ring 12 is made of fluororubber.
[0044] In this implementation plan: the filter screen 13 can intercept particles, reducing the risk of oil circuit blockage. It can be replaced by disassembling the shaft body 2, thus reducing maintenance costs.
[0045] Working principle: First, the oil slinger ring 5 is placed on the outside of the shaft body 2 and positioned by the limiting plate 4. Then, the guide roller shaft body 1 and the shaft body 2 are connected and fixed, and the guide roller shaft body 1 and the shaft body 2 are aligned. At this time, the positioning rods 3 are distributed on the outside of the shaft body 2, and then bolts are used to connect and fix them. Next, the lubricating oil mist is introduced into the guide roller shaft body 1 through the oil injection hole 7, and impurities are filtered by the filter screen 13 to ensure that clean oil and gas enter the oil and gas channel 9 inside the shaft body 2. Then, the oil and gas flow along the oil and gas channel 9 to the oil outlet channel 10 in the middle of the guide roller shaft, and the oil and gas are sprayed from the oil outlet channel 10. The oil slinger 5 and the oil outlet channel 10 are connected to the inclined oil distribution groove. When the guide roller shaft rotates at high speed, the centrifugal force can be used to evenly throw out the oil and gas, covering the balls and the entire surface of the inner and outer rings of the guide roller bearing 11. The oil and gas penetrate into the gap between the bearing balls and the raceway to form an oil film lubrication, avoiding dry friction. The inclined groove design can ensure lubrication without dead angles. Finally, the shaft body 2 and the guide roller shaft body 1 are disassembled and reassembled periodically, so that the filter screen 13 can be removed from the inside of the sealing ring 12 and replaced. The sealing ring 12 can ensure the sealing effect at the connection, and the sealing plug 8 can seal both ends of the oil circuit to prevent leakage.
[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-speed wire rod mill finishing rolling guide roller shaft, comprising a guide roller shaft body (1) and a shaft body (2), characterized in that: A shaft (2) is installed below the guide roller shaft body (1). An axially penetrating oil and gas channel (9) is provided inside the shaft (2). One end of the oil and gas channel (9) is connected to the oil injection hole (7) provided on the side wall of the guide roller shaft body (1). The other end of the oil and gas channel (9) extends to the middle of the shaft (2) and is connected to the oil outlet channel (10). An oil-slinging ring (5) is sleeved on the outer side of the shaft (2), and a guide roller bearing (11) is installed inside the oil-slinging ring (5). A sealing ring (12) is fixed at the upper end of the shaft (2), and a filter screen (13) is engaged inside the sealing ring (12).
2. The high-speed wire rod mill finishing rolling guide roller shaft according to claim 1, characterized in that: Several positioning rods (3) are fixed below the guide roller shaft body (1). The guide roller shaft body (1) and the shaft body (2) are connected through the positioning rods (3) and fixed by bolts.
3. The high-speed wire rod mill finishing rolling guide roller shaft according to claim 1, characterized in that: The oil-slinging ring (5) is fixed with a fixing sleeve (6) at both the upper and lower ends. A limiting plate (4) is fixed on the outer side of the shaft (2). The oil-slinging ring (5) is engaged with the shaft (2) through the fixing sleeve (6) and the limiting plate (4).
4. The high-speed wire rod mill finishing rolling guide roller shaft according to claim 1, characterized in that: One end of the oil injection hole (7) is provided with a removable sealing plug (8), and the oil outlet channel (10) is an annular groove structure.
5. The high-speed wire rod mill finishing rolling guide roller shaft according to claim 1, characterized in that: The oil throwing ring (5) is connected to the oil outlet channel (10), and the upper and lower surfaces of the oil throwing ring (5) are each provided with three oblique oil distribution grooves, which are evenly distributed along the circumference.
6. The high-speed wire rod mill finishing rolling guide roller shaft according to claim 1, characterized in that: The filter screen (13) is a stainless steel sintered filter element, and the filter screen (13) is positioned corresponding to the oil and gas channel (9).
7. The high-speed wire rod mill finishing rolling guide roller shaft according to claim 1, characterized in that: The sealing ring (12) is made of fluororubber.