Steel rail end forced pre-bending clip for cooling bed
By designing forced pre-bending clips at the ends of rails for cold beds, the stop surface and guidance surface of the right angle trapezoidal protrusions are used to solve the problem of poor pre-bending effect at the ends of rails, and the improvement of the ends of rails after cooling is achieved Straightness and reduce the effect of adjusting the straightening difficulty.
Patent Information
- Application Number
- CN202323513532.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-21
AI Technical Summary
In the prior art, after cooling, the pre-bending effect caused by the pre-bending blind spot of the pre-bending trolley after cooling, resulting in poor straightening and straightening difficulty.
Design a forced pre-bending clip at the end of the rail for a cold bed, including an elongated substrate and a plurality of right-angle trapezoidal protrusions protruding from the top surface of the substrate. The stop surface and guide surface of the projection are respectively used to prevent the rail from rebounding and Guide the rail head to ensure that the rail ends have improved straightness after cooling.
By pre-bending and limiting the end of the rail by force pre-bending clip, the problem of the rail end rebounding due to elastic recovery force after cooling is effectively avoided, the straightness of the rail end is improved, and the straightening adjustment is reduced. Difficulty and time.
Smart Images
Figure CN222447715U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metallurgy, in particular to a forced pre-bending clip for a rail end portion of a cooling bed. Background Art
[0002] After the rail is rolled, the final rolling temperature is about 800°C. Due to the asymmetrical distribution of metal between the rail head and the rail bottom, there is more metal in the rail head than in the rail bottom during cooling. The rail head shrinks greatly during natural cooling, and the rail will bend toward the rail head, causing the rail to be unable to get off the cooling bed and cannot be straightened. To address this problem, the prior art usually uses a pre-bending trolley to control the pre-bending of hot rails. However, due to the influence of the spacing between the pre-bending trolleys, there is a pre-bending blind area of a certain length at the end of the rail, resulting in a large curvature of the end of the rail after cooling, which greatly increases the difficulty of straightening and straightness control and reduces the end straightness level.
[0003] Based on this, there is still room for further improvement in the existing technology. Utility Model Content
[0004] The main purpose of the utility model is to provide a forced pre-bending clamp for the rail end of a cooling bed, so as to solve the problem of poor pre-bending effect of the rail end caused by the pre-bending blind area of the pre-bending trolley.
[0005] According to one aspect of the utility model, a rail end forced pre-bending clip for a cooling bed is provided, comprising:
[0006] An elongated base body, the base body being provided with a mounting portion;
[0007] A plurality of protrusions protrude from the top surface of the base, the plurality of protrusions are evenly spaced along the length direction of the base, the longitudinal section of the protrusion is a right-angled trapezoid and includes vertical stop surfaces and inclined guide surfaces opposite to each other; when in use, the rail head is accommodated between two adjacent protrusions, and the two protrusions separated by a protrusion are respectively engaged with the top surface of the rail head and the top surface of the rail bottom.
[0008] According to an embodiment of the present invention, the length of the base is 1000-1500 mm, and the width is 300-400 mm.
[0009] According to an embodiment of the utility model, the mounting portion is a threaded connection hole.
[0010] According to an embodiment of the present invention, there are multiple mounting portions, and the multiple mounting portions are arranged along the length direction of the base.
[0011] According to an embodiment of the present invention, the distance between two adjacent protrusions is 45-50 mm.
[0012] According to an embodiment of the present invention, the height of the protrusion is 25-35 mm.
[0013] According to an embodiment of the present invention, the inclination angle of the guide surface relative to the horizontal plane is 45°.
[0014] According to an embodiment of the present invention, the length of the upper base of the trapezoid is 5 to 15 mm, and the length of the lower base of the trapezoid is 35 to 45 mm.
[0015] According to an embodiment of the present invention, the number of the protrusions is 10-15.
[0016] According to another aspect of the utility model, a cooling bed is provided, comprising: a static beam, a dynamic beam and a clip as described in any of the above embodiments, wherein a base of the clip is installed on the static beam and a top surface of the base is flush with a top surface of the static beam.
[0017] In the technical solution of the utility model, the forced pre-bending clip of the rail end includes a base and a plurality of protrusions protruding from the top surface of the base. When in use, the base is installed to the static beam of the cooling bed through the installation part and the top surface of the base is flush with the top surface of the static beam. When the rail falls, under the guidance of the inclined guiding surface of the protrusion, the rail head in the end area of the rail is guided to between two adjacent protrusions, and at the same time, the top surface of the rail head and the top surface of the rail bottom are respectively engaged with the vertical stop surfaces of the two protrusions, and the rebound of the rail end is prevented by the stop surface, so as to ensure the pre-bending effect of the rail end, so that the rail end has improved straightness after natural cooling, reducing the difficulty of adjusting the straightness of the straightening rail end and improving the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some implementation cases of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram showing the structure of a rail end forced pre-bending clip for a cooling bed according to an embodiment of the utility model;
[0020] Figure 2 Show Figure 1 A partial enlarged schematic diagram of
[0021] Figure 3 A schematic diagram showing the pre-bending of the rail end by the forced pre-bending clamp for the rail end of the cooling bed according to an embodiment of the utility model is shown.
[0022] Description of reference numerals:
[0023] 10. base; 12. mounting portion; 20. protruding portion; 22. stop surface; 24. guide surface; 26. upper bottom; 28. lower bottom; 100. clamp for forced pre-bending of rail end. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0026] As mentioned in the above background technology, during the natural cooling process of the straight rail, the different shrinkage rates (larger shrinkage rate of the rail head) caused by the asymmetry of the rail head and rail bottom sections will cause the rail to bend from the rail bottom to the rail head, forming a large curvature. In order to deal with this problem, the rail is usually pre-bent in the opposite direction of the bending direction after natural cooling before cooling. As the cooling proceeds, the applied pre-bending can "compensate" for the stress bending formed during the cooling process of the rail, and finally achieve the purpose of improving the straightness of the rail. In the prior art, a pre-bending trolley is used to pre-bend the rail before cooling. When pre-bending, the rail is placed horizontally so that the center line of the rail section extends in the horizontal direction. A plurality of pre-bending trolleys arranged along the extension direction of the rail are used to extend in different degrees in the horizontal direction to squeeze the rail bottom in the direction from the rail bottom to the rail head. The pre-bending trolley located in the middle extends to a greater extent, and the pre-bending trolleys located on both sides extend to a lesser extent, thereby pre-bending the rail to a predetermined shape of bending from the rail head to the rail bottom.
[0027] The inventor of the present application realizes that, affected by the spacing of the pre-bending trolleys, the pre-bending trolleys cannot effectively pre-bend the end area of the rails. Although the rail ends can be pre-bent to a certain extent, the degree of pre-bending is insufficient to offset the bending from the rail bottom to the rail head caused by the different shrinkage rates of the rail head and rail bottom during the subsequent natural cooling process and the elastic restoring force (the rails have a certain elastic restoring force after pre-bending), resulting in poor straightness of the rail end area after the cold zone ends. To solve this technical problem, the present application proposes one or more embodiments to be described below.
[0028] Figure 1The schematic diagram of the structure of the rail end forced pre-bending clip 100 for a cooling bed according to an embodiment of the utility model is shown. Figure 2 Show Figure 1 A partial enlarged schematic diagram of Figure 3 A schematic diagram showing the pre-bending of the rail end by the rail end forced pre-bending clip 100 according to an embodiment of the utility model. Figures 1 to 3 The utility model proposes a rail end forced pre-bending clip 100 for a cooling bed, comprising: an elongated base 10, the base 10 is provided with a mounting portion 12, when in use, the base 10 is mounted to the static beam of the cooling bed through the mounting portion 12 and the top surface of the base 10 is flush with the top surface of the static beam; a plurality of protrusions 20 protruding from the top surface of the base 10, the plurality of protrusions 20 are evenly spaced along the length direction of the base 10, the longitudinal section of the protrusion 20 is a right-angled trapezoid and comprises vertical stop surfaces 22 and inclined guide surfaces 24 opposite to each other, the stop surfaces 22 and the guide surfaces 24 are opposite to each other in the length direction of the base 10, and the guide surfaces 24 are inclined downward; when in use, a rail head is accommodated between two adjacent protrusions 20, and the two protrusions 20 with a protrusion 20 in between are respectively engaged with the top surface of the rail head and the top surface of the rail bottom. The distance between two adjacent protrusions 20 matches the height of the rail head, and the distance between two protrusions 20 with one protrusion 20 in between matches the distance between the top surface of the rail head and the top surface of the rail bottom.
[0029] In the embodiment of the utility model, the rail end forced pre-bending clip 100 includes a base 10 and a plurality of serrated protrusions 20 protruding from the top surface of the base 10. When in use, the base 10 is mounted to the static beam side of the cooling bed through the mounting portion 12 and the top surface of the base 10 is flush with the static beam top surface, so that when the rail falls, the rail head side and the rail bottom side of the rail end can engage with the top surface of the base 10. The guide surface 24 of the protrusion 20 is set as an inclined surface, which can guide the rail head to slide into the groove between two adjacent protrusions 20 on the one hand, so that the top surface of the rail head engages with the stop surface 22 of the protrusion 20 on its outer side, and on the other hand, it can also prevent the protrusion 20 from blocking or wearing the rail waist part. When the rail head is located between the two protrusions 20, the top surface of the rail head and the top surface of the rail bottom are respectively engaged with the stop surfaces 22 of the corresponding two protrusions 20 on the outside of the two protrusions 20, and the stop surfaces 22 prevent the rail end from rebounding, thereby ensuring the pre-bending effect of the rail end, so that the rail end has improved straightness after natural cooling, reducing the difficulty of adjusting the straightness of the straightening rail end, and improving the adjustment efficiency. In other words, the present application can forcibly pre-bend the rail end and maintain the pre-bending state by designing the rail end forced pre-bending clip 100, and prevent it from rebounding to the straight state due to the elastic restoring force, so as to make up for the problem of insufficient pre-bending of the rail end caused by the pre-bending blind area of the pre-bending trolley. The utility model limits the rail head and the rail bottom respectively through the corresponding protrusions 20, has good stability, and good limiting effect. For a rail, at least three protrusions 20 act on it, and the protrusions 20 are densely arranged to ensure the good strength of the clip 100.
[0030] In some embodiments, the length of the substrate 10 is 1000-1500 mm, and the width is 300-400 mm. For example, the length of the substrate 10 can be 1000 mm, 1100 mm, 1200 mm, 1300 mm, 1400 mm, 1500 mm, or any value between two adjacent values, and the width of the substrate 10 can be 300 mm, 350 mm, 400 mm, or any value between two adjacent values. By setting the substrate 10 of such a length, it can be ensured that a sufficient number of protrusions 20 can be arranged thereon and that the moving distance during the cooling process of the rail can be met and that a limiting effect can be provided for multiple rails. By setting the substrate 10 of such a width, it can be ensured that the substrate 10 has a good strength, and the width of the protrusion 20 can be consistent with the width of the substrate 10, thereby ensuring that a certain length of the area at the end of the rail is restricted, and ensuring the forced pre-bending effect of the end of the rail.
[0031] In some embodiments, the mounting portion 12 is a threaded connection hole, so that the base 10 is mounted to the static beam of the cooling bed by the cooperation of a threaded fastener (such as a bolt) and the threaded connection hole. The threaded connection hole extends along the width direction of the base 10, penetrates the front and back sides of the base 10, and facilitates the installation of the base 10 against the side of the static beam. Of course, in other embodiments, the mounting portion 12 can also be other components for achieving installation, such as a clamping member, a friction fitting member, etc.
[0032] In some embodiments, there are multiple mounting portions 12, which are arranged along the length of the base 10 to ensure mounting strength. The number of threaded holes can be selected according to strength requirements, and the diameter of the threaded holes can be selected according to actual conditions.
[0033] In some embodiments, the distance between two adjacent protrusions 20 is 45-50 mm, such as 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, 50 mm. This distance value matches the height of the rail head, ensuring that the rail head can be placed between two adjacent protrusions 20.
[0034] In some embodiments, the height of the protrusion 20 is 25-35 mm, for example, 25 mm, 27 mm, 29 mm, 31 mm, 33 mm, 35 mm. This height value ensures that the protrusion 20 can effectively limit the end of the rail to prevent the rail from easily passing over the protrusion 20, and prevents the protrusion 20 from being too high to block the rail from falling to the top surface of the base 10.
[0035] In some embodiments, the guide surface 24 has an inclination angle of 45° relative to the horizontal plane. This inclination angle ensures stable guidance of the rail head, so that the rail head can stably slide between the two protrusions 20, avoid blocking the rail, and ensure a certain strength of the protrusion 20.
[0036] In some embodiments, the length of the upper base 26 of the trapezoid is 5-15 mm, and the length of the lower base 28 of the trapezoid is 35-45 mm. Such length values can ensure the strength of the protrusion 20 and can also ensure that the rail head and the rail bottom can be well engaged with the corresponding protrusion 20.
[0037] In some embodiments, the number of the protrusions 20 is 10 to 15. By providing a plurality of protrusions 20, on the one hand, it is ensured that the rail has a certain sliding range on the clip 100. When the rail falls, it may not be caught by the corresponding group of protrusions 20 at once. It is possible to slide over one or more protrusions 20 along the length direction of the base 10 and finally stop and be caught by the corresponding group of protrusions 20. Therefore, a sufficient number of protrusions 20 is conducive to ensuring that the end of the rail is finally completely caught; on the other hand, providing a sufficient number of protrusions 20 can also limit the position of multiple rails to achieve forced pre-bending.
[0038] The utility model also provides a cooling bed, comprising: a static beam, a movable beam and a clamp 100 as described in any of the above embodiments, wherein a base 10 of the clamp 100 is mounted on the static beam. The static beam and the movable beam are parallel to each other, and the movable beam can move forward and backward along its extension direction and can also move up and down to realize lifting, dropping, and moving the position of the rail in the forward and backward direction.
[0039] After the design of the forced pre-bending clip for the rail end of the utility model was completed, it has been put into use on the universal line cooling bed of the Panzhihua Rail Beam Factory. After batch industrial verification, no problem of hard bending of the rail end was found after adding the forced pre-bending clip for the end. At the same time, the straightness of the rail end was improved, which improved the adjustment efficiency and straightness level of the straightening straightness.
[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.
Claims
1. A rail end forced pre-bending clip (100) for a cooling bed, characterized in that: include: An elongated base body (10), wherein the base body (10) is provided with a mounting portion (12); A plurality of protrusions (20) protruding from the top surface of the base (10), the plurality of protrusions (20) being evenly spaced and arranged along the length direction of the base (10), the longitudinal section of the protrusion (20) being a right-angled trapezoid and comprising a vertical stop surface (22) and an inclined guide surface (24) opposite to each other; When in use, a rail head is accommodated between two adjacent protrusions (20), and the two protrusions (20) separated by a protrusion (20) are respectively engaged with the top surface of the rail head and the top surface of the rail bottom.
2. The clip (100) according to claim 1, characterized in that: The base (10) has a length of 1000-1500 mm and a width of 300-400 mm.
3. The clip (100) according to claim 1, characterized in that: The mounting portion (12) is a threaded connection hole.
4. The clip (100) according to claim 1, characterized in that: There are a plurality of mounting portions (12), and the plurality of mounting portions (12) are arranged along the length direction of the base (10).
5. The clip (100) according to claim 1, characterized in that: The distance between two adjacent protrusions (20) is 45-50 mm.
6. The clip (100) according to claim 1, characterized in that: The height of the protrusion (20) is 25-35 mm.
7. The clip (100) according to claim 1, characterized in that: The guide surface (24) has an inclination angle of 45° relative to the horizontal plane.
8. The clip (100) according to claim 1, characterized in that: The length of the upper base (26) of the trapezoid is 5 to 15 mm, and the length of the lower base (28) of the trapezoid is 35 to 45 mm.
9. The clip (100) according to claim 1, characterized in that: The number of the protrusions (20) is 10 to 15.
10. A cooling bed, characterized in that: include: A static beam, a dynamic beam, and a clip (100) as claimed in any one of claims 1 to 9, wherein a base (10) of the clip (100) is mounted on the static beam and a top surface of the base (10) is flush with a top surface of the static beam.