A finishing work roll bearing box end cover of a rolling mill
By installing an alignment assembly on the end cover of the finishing work roll bearing housing of the rolling mill, and utilizing a combination structure of a fixed cylinder, a telescopic cylinder, and a buffer spring, the problems of low end cover installation efficiency and loosening and vibration caused by seal ring oxidation were solved, achieving stable installation and vibration reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN JUNDING MACHINERY EQUIPMENT CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-06-26
AI Technical Summary
The end cover of the bearing housing of the finishing work roll of the existing rolling mill needs to be manually fixed during the installation process, which leads to low installation efficiency and causes the end cover to loosen and vibrate more after the sealing ring is oxidized.
Design an end cover for the bearing housing of the finishing work roll of a rolling mill, including an alignment component. By using a combination structure of a fixed cylinder, a telescopic cylinder and a buffer spring, the end cover is temporarily fixed and the sealing ring is tightly fitted, eliminating gaps and reducing vibration.
It improves the installation efficiency of the end cap, ensures the stability of the end cap on the bearing housing, reduces vibration, extends the service life of the sealing ring, and ensures the normal operation of the work roller.
Smart Images
Figure CN224414157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing housing technology, and in particular to an end cover for a bearing housing of a finishing work roll of a rolling mill. Background Technology
[0002] The bearing housing end cover is connected to the housing by bolts or clips, fixing the outer ring of the bearing in a predetermined position to prevent axial or radial displacement during operation and ensure the stability of the transmission system. In applications such as lathe spindle boxes, the end cover can transmit torque and buffer and absorb shocks, reducing vibration during spindle operation and improving machining accuracy.
[0003] In addition, the contact surface between the end cap and the bearing housing is usually designed with a sealing groove, which can be used to install rubber sealing rings or felt to prevent dust, moisture and other impurities from entering the bearing and extend its service life.
[0004] However, in existing technology, during the installation of the end cap onto the bearing housing, workers need to align the mounting holes on the end cap with the mounting holes on the bearing housing before bolting. During bolting, workers need to manually hold the end cap in place continuously, installing at least two bolts before loosening the end cap to prevent it from shifting after the first bolt is installed, which would necessitate readjusting the end cap's position and affect installation efficiency.
[0005] During the use of the end cover installed on the bearing housing, the rubber sealing ring will oxidize after being exposed to air for a long time, causing the sealing ring to harden and shrink. This will cause gaps to appear on the contact surface between the end cover and the bearing housing, resulting in the end cover becoming loose. This will aggravate the vibration and affect the normal operation of the work roller.
[0006] Therefore, it is necessary to solve the above problems by using an end cover for the bearing housing of the finishing work roll of a rolling mill. Utility Model Content
[0007] The purpose of this utility model is to provide an end cover for the bearing housing of the finishing work roll of a rolling mill, so as to solve the problems mentioned in the background art.
[0008] To achieve the above objectives, this utility model provides the following technical solution: an end cover for a finishing work roll bearing housing of a rolling mill, comprising an end cover body movably mounted on the bearing housing body, the end cover body being mounted on the bearing housing body by bolts, and an alignment component and a sealing ring being provided on the side of the end cover body near the bearing housing body, the alignment component being evenly distributed on the end cover body.
[0009] Preferably, the alignment assembly includes a fixed cylinder fixedly installed on one side of the end cap body, a buffer spring is provided at the inner end of the fixed cylinder, and a telescopic cylinder is slidably provided on the inner side of the fixed cylinder.
[0010] Preferably, one end of the buffer spring is fixedly disposed at the inner end of the fixed cylinder, and the other end is fixedly disposed at one end of the telescopic cylinder.
[0011] Preferably, the end of the telescopic cylinder away from the buffer spring extends to the outside of the fixed cylinder, and the sealing ring has a circular hole with the same outer diameter as the fixed cylinder.
[0012] Preferably, the end cap body is provided with a through hole, the bolt body passes through the through hole, and the alignment component is provided corresponding to the through hole.
[0013] Preferably, the bearing housing body is provided with a blind hole, the blind hole including a threaded portion and a smooth portion, the smooth portion of the blind hole is fitted with the outer surface of the alignment component, and the threaded portion of the blind hole is fitted with the thread on the bolt body.
[0014] The technical effects and advantages of this utility model are as follows:
[0015] 1. In this utility model, by setting an alignment component, during the process of installing the end cap body onto the side of the bearing housing body, it is convenient for workers to temporarily fix the end cap body to the side of the bearing housing body, avoiding the need for workers to manually fix the end cap body, and preventing the end cap body from shifting and requiring readjustment, thus speeding up the installation efficiency; during the operation of the work roller installed in the bearing housing body, the alignment component can eliminate the gap between the end cap body and the bearing housing body after the sealing ring on the end cap body hardens and shrinks due to long-term use, and at the same time, it can also reduce the vibration of the end cap body and ensure the normal operation of the work roller.
[0016] 2. In this utility model, by setting a fixed cylinder, a telescopic cylinder and a buffer spring, during the installation of the end cover body, the fixed cylinder and the telescopic cylinder are first inserted into the blind hole of the bearing housing body, so that the end cover body is temporarily fixed to the side of the bearing housing body. There is no need for the staff to manually fix the position of the end cover, which makes it easier for the staff to install the bolt body later and speeds up the installation efficiency.
[0017] 3. In this utility model, when the bolt body is installed, the bolt body drives the telescopic cylinder to move, causing the buffer spring to stretch. This causes the buffer spring to drive the end cover body to press tightly against the bearing housing body through the fixed cylinder. During the operation of the working roller, the elastic force generated by the stretching of the buffer spring itself can continuously drive the sealing ring to press tightly against the side of the bearing housing body, eliminating the gaps that appear at the seal when the sealing ring shrinks, ensuring the stability of the end cover, reducing the vibration of the end cover, and ensuring the normal operation of the working roller. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model;
[0021] Figure 4 for Figure 3 Enlarged schematic diagram of section A in the middle;
[0022] Figure 5 This is a schematic diagram showing the connection relationship between the alignment component and the end cap body of this utility model;
[0023] Figure 6 for Figure 5 Enlarged schematic diagram of part B in the middle.
[0024] In the diagram: 1. Bearing housing body; 2. End cover body; 3. Bolt body; 4. Alignment assembly; 401. Fixing cylinder; 402. Telescopic cylinder; 403. Buffer spring; 5. Sealing ring. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. 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 based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] To address the issues that require workers to manually hold the end cap in place during bolt installation on the bearing housing, needing to install at least two bolts before loosening it to prevent displacement after the first bolt, thus reducing installation efficiency, and the problem that during use, the sealing ring oxidizes, hardens, and shrinks, causing gaps at the contact surface between the end cap and the bearing housing, leading to loosening of the end cap, increased vibration, and affecting the normal operation of the work roller, the following embodiments are proposed.
[0027] This utility model provides, for example Figures 1 to 6The end cover of a finishing work roll bearing housing shown includes an end cover body 2 movably mounted on a bearing housing body 1. The end cover body 2 is mounted on the bearing housing body 1 by bolt bodies 3. An alignment component 4 and a sealing ring 5 are provided on the side of the end cover body 2 near the bearing housing body 1. The alignment component 4 is evenly distributed on the end cover body 2. A through hole is provided on the end cover body 2, and the bolt bodies 3 pass through the through hole. The alignment component 4 is correspondingly arranged with the through hole. A blind hole is provided on the bearing housing body 1. The blind hole includes a threaded part and a smooth part. The smooth part of the blind hole fits with the outer surface of the alignment component 4, and the threaded part of the blind hole fits with the thread on the bolt body 3.
[0028] By setting the alignment component 4, during the process of installing the end cap body 2 onto the side of the bearing housing body 1, it is convenient for the staff to temporarily fix the end cap body 2 to the side of the bearing housing body 1, avoiding the need for the staff to manually fix the end cap body 2, and also avoiding the need to readjust the position due to the end cap body 2 shifting, thus speeding up the installation efficiency; during the operation of the work roller installed in the bearing housing body 1, the alignment component 4 can eliminate the gap between the end cap body 2 and the bearing housing body 1 after the sealing ring 5 on the end cap body 2 has hardened and shrunk due to long-term use. At the same time, it can also reduce the vibration of the end cap body 2 and ensure the normal operation of the work roller.
[0029] like Figures 4-6 As shown, the alignment assembly 4 includes a fixed cylinder 401 fixedly installed on one side of the end cap body 2. A buffer spring 403 is provided at the inner end of the fixed cylinder 401, and a telescopic cylinder 402 is slidably provided on the inner side of the fixed cylinder 401. One end of the buffer spring 403 is fixedly installed at the inner end of the fixed cylinder 401, and the other end is fixedly installed at one end of the telescopic cylinder 402. The end of the telescopic cylinder 402 away from the buffer spring 403 extends to the outer side of the fixed cylinder 401. A circular hole with the same outer diameter as the fixed cylinder 401 is provided on the sealing ring 5.
[0030] When installing the end cap body 2, the worker lifts the end cap body 2 so that the telescopic cylinder 402 faces the blind hole on the bearing housing body 1, and inserts the telescopic cylinder 402 into the blind hole, so that the end cap body 2 can be temporarily fixed to the side of the bearing housing body 1. Then, the bolt body 3 is inserted into the through hole on the end cap body 2, so that the threaded end of the bolt body 3 protrudes from the end of the telescopic cylinder 402. (Refer to...) Figure 6 The state shown.
[0031] The operator tightens the bolt body 3 so that the threaded end of the bolt body 3 matches the threaded portion of the blind hole on the bearing housing body 1. During the tightening process, the telescopic cylinder 402 moves towards the inner end of the blind hole, and the telescopic cylinder 402 stretches the buffer spring 403. The buffer spring 403 generates elastic force, which makes the sealing ring 5 fit tightly against the side of the bearing housing body 1.
[0032] When the sealing ring 5 is used for a long time, it will harden and shrink due to oxidation, which will cause gaps in the seal. At this time, the elastic force generated by the stretching of the buffer spring 403 can drive the end cover body 2 to press against the side of the bearing housing body 1, thereby eliminating the gaps caused by the hardening and shrinkage of the sealing ring 5.
[0033] By setting a fixed cylinder 401, a telescopic cylinder 402, and a buffer spring 403, during the installation of the end cover body 2, the fixed cylinder 401 and the telescopic cylinder 402 are first inserted into the blind hole of the bearing housing body 1, so that the end cover body 2 is temporarily fixed to the side of the bearing housing body 1. This eliminates the need for workers to manually fix the position of the end cover, making it easier for workers to install the bolt body 3 later and speeding up the installation efficiency.
[0034] When the end cap body 2 is installed and fixed by the bolt body 3, the bolt body 3 drives the telescopic cylinder 402 to move, causing the buffer spring 403 to stretch. This causes the buffer spring 403 to drive the end cap body 2 to press against the bearing housing body 1 through the fixed cylinder 401. During the operation of the working roller, the elastic force generated by the stretching of the buffer spring 403 can continuously drive the sealing ring 5 to press against the side of the bearing housing body 1, eliminating the gaps that appear at the seal when the sealing ring 5 shrinks, ensuring the stability of the end cap, reducing the vibration of the end cap, and ensuring the normal operation of the working roller.
[0035] The working principle of this utility model is as follows: First, the end cap is temporarily fixed. The worker picks up the end cap body 2, so that the telescopic cylinder 402 faces the blind hole on the bearing housing body 1, and inserts the telescopic cylinder 402 into the blind hole, so that the end cap body 2 can be temporarily fixed to the side of the bearing housing body 1.
[0036] Next, the bolts are installed for fixation. The workers insert the bolt body 3 into the through hole on the end cover body 2, so that the threaded end of the bolt body 3 passes out from the end of the telescopic cylinder 402, and tighten the bolt body 3 so that the threaded end of the bolt body 3 matches the threaded part of the blind hole on the bearing housing body 1.
[0037] Then, the end cap is installed and sealed tightly. During the tightening of the bolt body 3, the telescopic cylinder 402 is driven to move towards the inner end of the blind hole. The telescopic cylinder 402 stretches the buffer spring 403, and the buffer spring 403 generates elastic force, so that the sealing ring 5 fits tightly against the side of the bearing housing body 1.
[0038] Finally, the elastic force generated by the stretching of the buffer spring 403 can keep the end cover body 2 always pressed against the side of the bearing housing body 1, eliminating the gaps caused by the hardening and shrinkage of the sealing ring 5, and ensuring the stability of the end cover body 2.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. An end cover for a finishing work roll bearing housing of a rolling mill, characterized in that: The end cover body (2) is movably mounted on the bearing housing body (1). The end cover body (2) is mounted on the bearing housing body (1) by bolt body (3). An alignment component (4) and a sealing ring (5) are provided on the side of the end cover body (2) near the bearing housing body (1). The alignment component (4) is evenly arranged on the end cover body (2).
2. The end cover of the finishing work roll bearing housing of a rolling mill according to claim 1, characterized in that: The alignment assembly (4) includes a fixed cylinder (401) fixedly installed on one side of the end cap body (2), a buffer spring (403) is provided at the inner end of the fixed cylinder (401), and a telescopic cylinder (402) is slidably provided on the inner side of the fixed cylinder (401).
3. The end cover of the finishing work roll bearing housing of a rolling mill according to claim 2, characterized in that: One end of the buffer spring (403) is fixedly disposed at the inner end of the fixed cylinder (401), and the other end is fixedly disposed at one end of the telescopic cylinder (402).
4. The end cover of the finishing work roll bearing housing of a rolling mill according to claim 2, characterized in that: The telescopic cylinder (402) extends to the outside of the fixed cylinder (401) at the end away from the buffer spring (403), and the sealing ring (5) has a circular hole with the same outer diameter as the fixed cylinder (401).
5. The end cover of the finishing work roll bearing housing of a rolling mill according to claim 1, characterized in that: The end cap body (2) is provided with a through hole, the bolt body (3) is inserted into the through hole, and the alignment component (4) is provided corresponding to the through hole.
6. The end cover of the finishing work roll bearing housing of a rolling mill according to claim 1, characterized in that: The bearing housing body (1) is provided with a blind hole, which includes a threaded part and a smooth part. The smooth part of the blind hole fits with the outer surface of the alignment component (4), and the threaded part of the blind hole fits with the thread on the bolt body (3).