An installation structure for an oil film bearing in the pinch rolls of a high-speed wire rod mill

Abstract

This invention provides an installation structure for an oil film bearing in the pinch rolls of a high-speed wire rod mill, comprising: a housing with bearing housing mounting holes, a bearing housing installed in the mounting holes, an oil film bearing installed in the bearing housing, an angular contact bearing installed in the bearing housing and located at the right end of the oil film bearing, a roll shaft inserted into the oil film bearing, and an oil gap space of 0.2-0.3 mm maintained between the roll shaft and the oil film bearing; a limiting shaft head at the front end of the roll shaft passing through the oil film bearing and inserted into the angular contact bearing; the right end of the limiting shaft head being fixed to the angular contact bearing by an elastic washer; and an anti-loosening bearing cap installed on the right end of the elastic washer and pressing the elastic washer tightly. This invention, through the design of the roll shaft installation structure, uses a combination of an oil film bearing and an angular contact bearing, which can greatly reduce the load on the roll shaft and improve its service life.

Description

Technical Field

[0001] This utility model relates to the field of high-speed wire rod mill technology, specifically to an installation structure of an oil film bearing in the pinch rolls of a high-speed wire rod mill. Background Technology

[0002] In high-speed wire rod production, the different operating modes of the front pinch rollers of the high-speed wire rod spinning machine are divided into tail and head pinch switches, full-length pinch switches, and special pinch roller tail deceleration and acceleration control. These different operating modes can be flexibly adjusted according to production needs to meet the pinching and control requirements of different parts of the high-speed wire rod, ensuring the stability and quality of the high-speed wire rod during the spinning process.

[0003] Under such complex stress and significant axial impact conditions, the angular contact bearings at the rear end of the roll shaft are prone to cage breakage and failure during high-speed operation. Once this occurs, the axial movement of the pinch roll shaft increases. Initially, the large axial clearance reduces clamping accuracy, and further exacerbation can lead to damage to the pinch roll water seal and bearing burnout, affecting normal equipment operation. In production lines where pinch rolls are used intensively, the entire pinch roll unit may need to be replaced every two months, resulting in increased maintenance costs and reduced production efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes an installation structure for an oil film bearing in the pinch rolls of a high-speed wire rod mill. By designing the installation structure of the roll shaft, the load on the roll shaft can be greatly reduced, and the service life of the roll shaft can be improved.

[0005] To achieve the above technical solution, this utility model provides an installation structure for an oil film bearing in a pinch roll of a high-speed wire rod mill, comprising: a housing, wherein the housing is provided with a bearing housing mounting hole, the bearing housing is installed in the bearing housing mounting hole, the oil film bearing is installed in the bearing housing, an angular contact bearing is installed in the bearing housing and located at the right end of the oil film bearing, a roll shaft is inserted into the oil film bearing, and an oil gap space of 0.2-0.3mm is maintained between the roll shaft and the oil film bearing, a limiting shaft head at the front end of the roll shaft passes through the oil film bearing and is inserted into the angular contact bearing, the right end of the limiting shaft head is fixed to the angular contact bearing by an elastic washer, and an anti-loosening bearing cover is installed on the right end of the elastic washer and presses the elastic washer tightly.

[0006] In the above technical solution, during actual operation, a concentric oil film bearing is installed on the left side of the angular contact bearing. The angular contact bearing provides good support and fixation for the roll shaft. A 0.2-0.3mm oil gap is maintained between the roll shaft and the oil film bearing, ensuring that the oil film bearing will not seize up or burn out during prolonged high-speed rotation. The limiting shaft head at the front end of the roll shaft is fixed to the angular contact bearing via an elastic washer. An anti-loosening bearing cover is installed on the right end of the elastic washer and presses it tightly, providing good anti-loosening protection. In actual use, when lubricating oil is injected into the oil film bearing of the roll shaft, the relative movement between the rolling elements and the inner and outer rings causes the lubricating oil to be squeezed and form a thin oil film. This oil film significantly reduces the direct contact area between the rolling elements and the inner and outer rings, thereby reducing frictional resistance. During the operation of the roll shaft, reduced friction makes the roll shaft run more smoothly, improves equipment operating efficiency, and reduces energy loss. Without the protection of the oil film, the bearing components are easily worn, thus affecting the performance and service life of the roll shaft. The presence of an oil film can effectively reduce this wear, extend the service life of the roll shaft, and reduce equipment maintenance costs and replacement frequency.

[0007] Preferably, the anti-loosening bearing cover is provided with an adjusting screw. The adjusting screw can lock the anti-loosening bearing cover onto the limiting shaft head, ensuring that the anti-loosening bearing cover can press the elastic gasket, thereby ensuring a stable connection between the limiting shaft head and the angular contact bearing, and preventing the roller shaft from moving left and right during high-speed operation.

[0008] Preferably, the housing is provided with an oil injection hole that communicates with the oil film bearing, so that lubricating oil can be injected into the oil film bearing through the oil injection hole.

[0009] Preferably, the roll shaft is provided with a helical gear to facilitate transmission between the roll shaft and other shafts.

[0010] Preferably, the enclosure is equipped with a side bracket to facilitate the positioning and installation of the enclosure with the external structure.

[0011] The beneficial effects of the installation structure of the oil film bearing in the pinch roll of the high-speed wire rod mill provided by this utility model are as follows: The installation structure of the oil film bearing in the pinch roll of the high-speed wire rod mill is easy to assemble. Through the design of the roll shaft installation structure, the oil film bearing and the angular contact bearing are used in combination. By setting a concentric oil film bearing on the left side of the angular contact bearing, the angular contact bearing plays a good supporting and fixing role for the roll shaft. The roll shaft and the oil film bearing are guaranteed to have an oil gap space of 0.2-0.3mm, which ensures that the oil film bearing will not seize up and burn out during long-term high-speed rotation. The limiting shaft head at the front end of the roll shaft is fixed to the angular contact bearing by an elastic washer. The anti-loosening bearing cover is installed on the right end of the elastic washer and presses the elastic washer tightly, which plays a good anti-loosening role. In actual use, when lubricating oil is injected into the oil film bearing of the roll shaft, due to the relative movement between the rolling elements and the inner and outer rings, the lubricating oil is squeezed and forms a thin oil film. This oil film can significantly reduce the direct contact area between the rolling elements and the inner and outer rings, thereby reducing frictional resistance, greatly reducing the load on the roll shaft, and improving the service life of the roll shaft. Attached Figure Description

[0012] Figure 1 This is a front view of the three-dimensional structure of this utility model.

[0013] Figure 2 This is a rear view of the three-dimensional structure of this utility model after assembly.

[0014] Figure 3 This is a cross-sectional view of the present invention.

[0015] Figure 4 This is a cross-sectional view of the oil film bearing in this utility model.

[0016] In the diagram: 1. Roll shaft; 2. Housing; 3. Oil film bearing; 4. Bearing housing; 5. Elastic gasket; 6. Angular contact bearing; 7. Anti-loosening bearing cover; 8. Helical gear; 9. Limiting shaft head; 10. Adjusting screw; 11. Oil injection hole; 12. Side bracket. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: An installation structure for an oil film bearing in the pinch rolls of a high-speed wire rod mill.

[0019] Reference Figures 1 to 4As shown, an installation structure for an oil film bearing in a pinch roll of a high-speed wire rod mill includes: a housing 2, on which a side bracket 12 is installed to facilitate positioning and installation of the housing 2 with external structures; a bearing housing 4 is installed in the bearing housing mounting hole; an oil film bearing 3 is installed in the bearing housing 4; an angular contact bearing 6 is installed in the bearing housing 4 and located at the right end of the oil film bearing 3; a roll shaft 1 is inserted into the oil film bearing 3, and a 0.2mm oil gap space is maintained between the roll shaft 1 and the oil film bearing 3; the front end of the roll shaft 1... The limiting shaft head 9 passes through the oil film bearing 3 and is inserted into the angular contact bearing 6. The right end of the limiting shaft head 9 is fixed to the angular contact bearing 6 by an elastic washer 5. The anti-loosening bearing cover 7 is installed on the right end of the elastic washer 5 and presses the elastic washer 5 tightly. The anti-loosening bearing cover 7 is provided with an adjusting screw 10. By adjusting the screw 10, the anti-loosening bearing cover 7 can be locked on the limiting shaft head 9 to ensure that the anti-loosening bearing cover 7 can press the elastic washer 5 tightly, thereby ensuring a stable connection between the limiting shaft head 9 and the angular contact bearing 6 and preventing the roller shaft 1 from moving left and right during high-speed operation. The roller shaft 1 is provided with a helical gear 8 to facilitate the transmission between the roller shaft 1 and other shafts. The housing 2 is provided with an oil injection hole 11 that communicates with the oil film bearing 3, and lubricating oil can be injected into the oil film bearing 3 through the oil injection hole 11.

[0020] The oil film bearing is easy to assemble in the pinch rolls of high-speed wire rod mills. The design of the roll shaft 1 mounting structure significantly reduces the load on the roll shaft 1 and extends its service life. In actual operation, a concentric oil film bearing 3 is installed on the left side of the angular contact bearing 6. The angular contact bearing 6 provides good support and fixation for the roll shaft 1. A 0.2mm oil gap is maintained between the roll shaft 1 and the oil film bearing 3, ensuring that the oil film bearing 3 will not seize or burn out during prolonged high-speed rotation. The limiting shaft head 9 at the front end of the roll shaft 1 is fixed to the angular contact bearing 6 by an elastic washer 5. The anti-loosening bearing cap 7 is installed on the right end of the elastic washer 5 and presses it tightly, providing good anti-loosening protection. In actual use, when lubricating oil is injected into the oil film bearing 3 of the roll shaft 1, the relative movement between the rolling elements and the inner and outer rings causes the lubricating oil to be squeezed and form a thin oil film. This oil film significantly reduces the direct contact area between the rolling elements and the inner and outer rings, thereby reducing frictional resistance. During the operation of the roll shaft 1, reducing friction can make the roll shaft 1 run more smoothly, improve the operating efficiency of the equipment, and reduce energy loss. Without the protection of an oil film, the bearing components are easily worn, thus affecting the performance and service life of the roll shaft 1. The presence of an oil film can effectively reduce this wear, extend the service life of the roll shaft 1, and reduce the maintenance cost and replacement frequency of the equipment.

[0021] The above description is only a preferred embodiment of the present utility model. However, the present utility model should not be limited to the content disclosed in the embodiment and the accompanying drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit disclosed in the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An installation structure for an oil film bearing in the pinch rolls of a high-speed wire rod mill, characterized in that... include: The housing has bearing housing mounting holes, and the bearing housing is installed in the bearing housing mounting holes. An oil film bearing is installed in the bearing housing, and an angular contact bearing is installed in the bearing housing and located at the right end of the oil film bearing. The roll shaft is inserted into the oil film bearing, and an oil gap space of 0.2-0.3mm is maintained between the roll shaft and the oil film bearing. The limiting shaft head at the front end of the roll shaft passes through the oil film bearing and is inserted into the angular contact bearing. The right end of the limiting shaft head is fixed to the angular contact bearing by an elastic washer. An anti-loosening bearing cover is installed on the right end of the elastic washer and presses the elastic washer tightly.

2. The installation structure of the oil film bearing in the pinch rolls of a high-speed wire rod mill as described in claim 1, characterized in that: The anti-loosening bearing cover is equipped with an adjusting screw.

3. The installation structure of the oil film bearing in the pinch rolls of a high-speed wire rod mill as described in claim 1, characterized in that: The housing is provided with an oil injection hole that communicates with the oil film bearing.

4. The installation structure of the oil film bearing in the pinch rolls of a high-speed wire rod mill as described in claim 1, characterized in that: The roller shaft is equipped with a helical gear.

5. The installation structure of the oil film bearing in the pinch rolls of a high-speed wire rod mill as described in claim 1, characterized in that: The box is equipped with side supports.

Images