Improved guide round key device of finish rolling working roll bearing seat
By improving the guide circular key to a cylindrical structure and equipping it with anti-slip strips and discharge holes, the problem of insufficient load-bearing capacity of the guide circular key is solved, and the stability of the bearing seat and the safety of roller changing are improved.
Patent Information
- Application Number
- CN202422114616.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing guide key structure design of the finishing work roll bearing seat results in limited load-bearing capacity, which is prone to axial resistance impact of the bearing seat, causing the matching roll pin and the guide key to separate, which may cause the roll to fall and damage the roll surface of the lower work roll.
The guide circular key device is improved, the storage groove is changed from a conical surface structure to a cylindrical structure, and vertical surface contact is set on the inner wall, equipped with anti-slip strips and discharge holes to enhance friction and convenience.
The bearing capacity of the guide key is improved, which prevents the bearing seat from disengaging and the roll from falling, thus ensuring the safety and accuracy of the roll changing operation.
Smart Images
Figure CN223325228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hot-rolling strip mill bearing seats, in particular to an improved guide round key device for a finishing work roll bearing seat. Background Art
[0002] The finishing mill's core working device is the finishing work roll, primarily responsible for controlling strip accuracy and shape. To facilitate roll replacement, the mill is equipped with a rapid roll-changing device and a rapid elevation adjustment device. During roll changes, the roll-changing device pulls the roll-changing hook, pushing and pulling the lower work roll's running wheel, driving the upper work roll, enabling rapid roll changes on the mill.
[0003] In the existing technology, since only the guide circular key on the inlet side of the operating side of the upper and lower roll matching device can bear the axial force of the bearing seat, the inner side of its structural design is in the form of a cone. After the roll is matched, the matching pin and the inner side of the guide circular key are in point-to-line contact. The inner wall in the inlet is in the form of a cone, and the load-bearing capacity is limited. Under the axial resistance impact of the bearing seat, the matching pin and the guide circular key may separate, and the roll may easily fall and damage the roll surface of the lower working roll. Utility Model Content
[0004] The purpose of the utility model is to provide an improved guide circular key device for the bearing seat of the finishing work roll, so as to solve the problem that the inner wall in the inlet is in the form of a cone, the bearing capacity is limited, and the axial resistance force of the bearing seat may cause the matching roller pin and the guide circular key to separate, which may easily cause the roll to fall and damage the roll surface of the lower working roll.
[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions: an improved guide circular key device for a finishing work roll bearing seat, comprising a storage groove, wherein the storage groove is opened on one side of the guide circular key body, the inner wall of the storage groove and the inner side of the storage groove are perpendicular to each other, the depth of the storage groove is 16 mm, the inner wall surface of the storage groove is provided with a back chamfer, the back chamfer is 30 degrees to the storage groove, the depth of the back chamfer is 5 mm, the surface of the guide circular key body is provided with a front chamfer, and the height of the guide circular key body is 37.5 mm.
[0006] Preferably, the inner wall surface of the storage groove is provided with a plurality of fixing grooves, and anti-slip strips are fixed inside the fixing grooves.
[0007] Preferably, a rotation groove is provided on one side of the interior of the storage groove, and a rotation hole is provided on one side of the interior of the rotation groove.
[0008] Preferably, the diameter of the rotation groove is 28 mm, and the depth of the rotation groove is 12 mm.
[0009] Preferably, the diameter of the rotating hole is 17.5 mm.
[0010] Preferably, a discharge hole is provided on one side of the guide circular key body.
[0011] Compared with the prior art, the improved guide key device for the finishing work roll bearing seat using the above technical solution has the following beneficial effects:
[0012] 1. Since the storage groove is changed from the original conical surface structure to the current cylindrical surface structure, the roller matching operation can be maintained without affecting the original opening degree. Moreover, since the overall height of the guide key body is consistent with the original, the roller matching accuracy is not affected. Since the inner wall surface of the storage groove is perpendicular to the inner side, when the roller matching pin is inside the storage groove, it contacts the vertical surface of the storage groove, which can effectively form cylindrical surface contact, thus better bearing the axial force of the roller bearing seat, preventing the bearing seat from being disengaged due to force, and avoiding accidents such as roller falling and causing injuries.
[0013] Second, when the roller pin is inside the storage slot, the surface of the roller pin and the surface of the anti-slip strip will squeeze each other, thereby increasing the friction of the roller pin in the storage slot, thereby increasing the firmness of the position of the roller pin in the storage slot;
[0014] 3. When the matching roller pin is installed into the storage slot, since the surface of the matching roller pin contacts the cylindrical surface inside the storage slot, as the matching roller pin slides into the storage slot, the air squeezed out of the storage slot by the matching roller pin can be discharged through the discharge hole, which increases the convenience of installing the matching roller pin into the storage slot. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment.
[0016] Figure 2 2 is a top perspective schematic diagram of an embodiment.
[0017] Figure 3 It is a schematic diagram of the explosion of the discharge hole and the connecting plate in the embodiment.
[0018] In the figure: 1. Guide key body; 2. Storage slot; 3. Back chamfer; 4. Front chamfer; 5. Fixing slot; 6. Anti-slip strip; 7. Rotation slot; 8. Rotation hole; 9. Discharge hole. DETAILED DESCRIPTION
[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0020] like Figure 1-Figure 3As shown, an improved guide circular key device for a finishing work roll bearing seat includes a storage groove 2, which is opened on one side of a guide circular key body 1. The inner wall of the storage groove 2 is perpendicular to the inner side of the storage groove 2. The depth of the storage groove 2 is 16 mm. The inner wall surface of the storage groove 2 is provided with a back chamfer 3, which is 30 degrees to the storage groove 2. The depth of the back chamfer 3 is 5 mm. The surface of the guide circular key body 1 is provided with a front chamfer 4. The height of the guide circular key body 1 is 37.5 mm.
[0021] During use, since the storage groove 2 is changed from the original conical surface structure to the current cylindrical surface structure, the roller matching operation can be maintained without affecting the original opening degree, and since the overall height of the guide circular key body 1 is consistent with the original, it does not affect the roller matching accuracy. Since the inner wall surface of the storage groove 2 is perpendicular to the inner side, when the matching roller pin is inside the storage groove 2, it contacts the vertical surface of the storage groove 2, which can effectively form a cylindrical surface contact, which can better bear the axial force of the roller bearing seat, prevent the bearing seat from being disengaged due to force, and avoid the situation where the roller falls and causes injury.
[0022] like Figure 1-Figure 3 As shown, the inner wall surface of the storage groove 2 is provided with several fixed grooves 5, and the inside of the fixed groove 5 is fixed with an anti-slip strip 6. A rotating groove 7 is provided on one side of the interior of the storage groove 2, and a rotating hole 8 is provided on one side of the interior of the rotating groove 7. The diameter of the rotating groove 7 is 28 mm, the depth of the rotating groove 7 is 12 mm, and the diameter of the rotating hole 8 is 17.5 mm.
[0023] During use, when the matching roller pin is inside the storage groove 2, the surface of the matching roller pin will be squeezed against the surface of the anti-slip strip 6, thereby increasing the friction of the matching roller pin in the storage groove 2, thereby increasing the firmness of the matching roller pin's position in the storage groove 2.
[0024] like Figure 3 As shown, a discharge hole 9 is provided on one side of the guide key body 1 .
[0025] During use, when the matching roller pin is installed into the storage groove 2, since the surface of the matching roller pin is in contact with the cylindrical surface inside the storage groove 2, as the matching roller pin slides into the storage groove 2, the air squeezed out of the storage groove 2 by the matching roller pin can be discharged through the discharge hole 9, which increases the convenience of installing the matching roller pin into the storage groove 2.
[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An improved guide circular key device for a finishing work roll bearing seat, comprising a storage groove (2), wherein the storage groove (2) is provided on one side of a guide circular key body (1), and is characterized in that: The inner wall of the storage groove (2) is perpendicular to the inner side of the storage groove (2), the depth of the storage groove (2) is 16 mm, the inner wall surface of the storage groove (2) is provided with a back chamfer (3), the back chamfer (3) and the storage groove (2) are at an angle of 30 degrees, the depth of the back chamfer (3) is 5 mm, the surface of the guide circular key body (1) is provided with a front chamfer (4), and the height of the guide circular key body (1) is 37.5 mm.
2. The improved guide round key device for the finishing work roll bearing seat according to claim 1, characterized in that: The inner wall surface of the storage groove (2) is provided with a plurality of fixing grooves (5), and anti-slip strips (6) are fixed inside the fixing grooves (5).
3. The improved guide key device for the finishing work roll bearing seat according to claim 1, characterized in that: A rotation groove (7) is provided on one side of the interior of the storage groove (2), and a rotation hole (8) is provided on one side of the interior of the rotation groove (7).
4. The improved guide key device for the finishing work roll bearing seat according to claim 3, characterized in that: The diameter of the rotating groove (7) is 28 mm, and the depth of the rotating groove (7) is 12 mm.
5. The improved guide key device for the finishing work roll bearing seat according to claim 3, characterized in that: The diameter of the rotating hole (8) is 17.5 mm.
6. The improved guide key device for the finishing work roll bearing seat according to claim 1, characterized in that: A discharge hole (9) is provided on one side of the guide circular key body (1).