Rolling mill with retaining plate
By coordinating hydraulic cylinders and hydraulic valve groups, the rolls are locked in the retaining plate, solving the problems of difficulty in tightening the fastening bolts and loosening of the nuts, thus improving the roll locking accuracy and the stability of the rolled product specifications.
Patent Information
- Application Number
- CN202520025800.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-06
AI Technical Summary
In existing rolling mill equipment, fastening bolts are difficult to tighten properly, resulting in poor tightening accuracy. Furthermore, under the vibration force of the working environment, bolts and nuts are prone to loosening, causing axial movement of the roll system and affecting the specifications and dimensions of the rolled product.
The rolls are locked by extending or retracting the hydraulic cylinders, replacing the traditional fastening bolts. The hydraulic cylinders are controlled by solenoid directional valves and solenoid ball valves to ensure that the rolls are locked in the retaining plate.
It improves the locking accuracy of the rolls, reduces the risk of loosening caused by vibration in the working environment, ensures that the specifications of the rolled products meet the design requirements, and reduces the amount of scrap steel and enterprise costs.
Smart Images
Figure CN223819343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel rolling technology, and in particular to a rolling mill with a retaining plate. Background Technology
[0002] Rolling mills are used in the steel rolling process. These mills are equipped with devices to prevent axial movement of the roll system. This device locks the roll system axially during rolling, reducing transmission and ensuring the roll pass settings remain constant. This guarantees that the dimensions of the rolled piece meet the original design requirements. Excessive axial movement of the roll system alters the roll pass, consequently changing the dimensions of the rolled piece. Ultimately, this results in the piece failing to meet design standards, increasing scrap volume, and raising company costs.
[0003] However, existing rolling mill equipment relies on fastening bolts to lock the rolls and reduce axial movement. In practical applications, this has two problems: first, due to limitations in manpower and working space, it is difficult to tighten the bolts properly, resulting in poor tightening accuracy; second, the vibration force of the working environment during steel rolling can easily loosen the bolts and nuts.
[0004] Therefore, existing technologies still need improvement. Utility Model Content
[0005] One of the technical problems that this utility model aims to solve is that by locking the rolls with fastening bolts to reduce axial movement, the bolts are difficult to tighten properly, resulting in poor tightening accuracy. Furthermore, the vibration force of the working environment during steel rolling can easily cause the bolts and nuts to loosen.
[0006] To address the aforementioned technical problems, some embodiments of this utility model disclose a rolling mill with a retaining plate, comprising:
[0007] Rolls;
[0008] A hydraulic cylinder connected to the roll, the hydraulic cylinder being able to extend or retract;
[0009] A hydraulic valve assembly connected to the hydraulic cylinder, the hydraulic valve assembly causing the hydraulic cylinder to switch between an extension action and a retraction action;
[0010] A retaining plate, into which the roll extends and is locked in place when the hydraulic cylinder extends.
[0011] In some embodiments, the hydraulic valve group includes a solenoid directional valve and a solenoid ball valve connected in sequence, wherein the solenoid directional valve is connected to the hydraulic cylinder and the solenoid ball valve is connected to the roll.
[0012] In some embodiments, the electromagnetic directional valve is connected to the hydraulic cylinder via a hydraulic pipeline.
[0013] In some embodiments, the solenoid directional valve includes a pressure port and a return port, and the solenoid directional valve can be turned to the pressure port to switch the hydraulic cylinder to an extension action.
[0014] In some embodiments, the solenoid directional valve can be turned to the return port, causing the hydraulic cylinder to switch to a retraction action.
[0015] In some embodiments, the solenoid directional valve includes a three-position four-way solenoid directional valve, wherein the three-position four-way solenoid directional valve is a Y-type three-position four-way solenoid directional valve.
[0016] In some embodiments, the hydraulic valve assembly further includes a one-way throttle valve connected to the solenoid ball valve, and a safety relief valve connected to the one-way throttle valve.
[0017] In some embodiments, the mill with a retaining plate further includes a fixing plate through which the rolls can pass to fix their position.
[0018] In some embodiments, the retaining plate has cavities that match the size of the rolls, and the rolls can extend into the cavities of the retaining plate.
[0019] In some embodiments, the mill with a retaining plate further includes a mill stand, the retaining plate being connected to the mill stand.
[0020] By adopting the above technical solution, this utility model has at least the following beneficial effects: This utility model provides a rolling mill with a retaining plate, including a roll and a hydraulic cylinder connected to the roll. The hydraulic cylinder can extend or retract. It also includes a hydraulic valve group connected to the hydraulic cylinder, which switches the hydraulic cylinder between extension and retraction actions. A retaining plate is also included, into which the roll extends and locks itself when the hydraulic cylinder extends. Through the cooperation between the hydraulic cylinder and the connected hydraulic valve group, the hydraulic cylinder can extend or retract. Since the hydraulic cylinder is connected to the roll, when the hydraulic cylinder extends, the pushing force of the hydraulic cylinder can cause the roll to extend into the retaining plate and lock itself, eliminating the need for bolts to lock the roll. This reduces the problem of incomplete bolt tightening leading to poor tightening accuracy, improves the roll locking accuracy, and ensures that the roll locking is not affected by the working environment throughout the rolling process, thus improving the roll locking degree. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a front view of a rolling mill disclosed in some embodiments of the present invention;
[0023] Figure 2 This is a top view of a rolling mill disclosed in some embodiments of the present utility model;
[0024] Figure 3 This is another front view of a rolling mill disclosed in some embodiments of the present invention.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Roll; 2. Holder plate; 3. Hydraulic cylinder; 4. Hydraulic valve assembly; 5. Solenoid directional valve; 6. Solenoid ball valve; 7. One-way throttle valve; 8. Safety relief valve; 9. Pressure port; 10. Return port; 11. Fixing plate; 12. Bearing housing; 13. Mill stand; 100. Mill with holder plate. Detailed Implementation
[0027] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0028] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values set forth in these embodiments should be interpreted as exemplary only and not as limiting.
[0029] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0030] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.
[0031] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.
[0032] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.
[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.
[0034] like Figure 1 As shown, Figure 1 This is a front view of the rolling mill 100 disclosed in some embodiments of the present invention. Figure 2 For a top view of the rolling mill 100 disclosed in some embodiments of this utility model, please refer to... Figure 1-2 The rolling mill 100 with a retaining plate includes a roll 1 and a hydraulic cylinder 3 connected to the roll 1. The hydraulic cylinder 3 can extend or retract. The roll 1 extends into the retaining plate 2. The rolling mill 100 with a retaining plate also includes a hydraulic valve group 4 connected to the hydraulic cylinder 3. The hydraulic valve group 4 can switch the hydraulic cylinder 3 to extend or retract. The rolling mill 100 with a retaining plate also includes a retaining plate 2. The roll 1 extends into the retaining plate 2 and can be locked with the retaining plate 2 when the hydraulic cylinder 3 extends.
[0035] Through the cooperation between the hydraulic cylinder 3 and the hydraulic valve group 4 connected to it, the hydraulic cylinder 3 can extend or retract. The hydraulic cylinder 3 is also connected to the roll 1. Therefore, when the hydraulic cylinder 3 extends, the roll 1 can be inserted into the retaining plate 2 and locked by the pushing force of the hydraulic cylinder 3. There is no need to rely on fastening bolts to lock the roll 1, which reduces the problem of poor fastening accuracy caused by incomplete bolt tightening and improves the locking accuracy of the roll 1. During the entire rolling process of the mill, it will not be affected by the working environment, thus improving the locking degree of the roll 1.
[0036] Please refer to several embodiments of this utility model. Figure 1 The hydraulic valve assembly 4 includes a solenoid directional valve 5 and a solenoid ball valve 6 connected in sequence. The solenoid directional valve 5 is connected to the hydraulic cylinder 3, and the solenoid ball valve 6 is connected to the roll 1. The solenoid directional valve 5 can change the flow direction of hydraulic oil. It controls the position movement of the valve core in the valve body by energizing and de-energizing the electromagnet, thereby changing the connection relationship between different oil ports on the valve body and realizing precise control of the hydraulic oil flow direction. The solenoid ball valve 6 is used to realize the on-off control of hydraulic oil in the hydraulic pipeline. When the electromagnet of the solenoid ball valve 6 is energized, the valve core moves, opening the valve and allowing hydraulic oil to pass smoothly through the ball valve to supply hydraulic oil to subsequent hydraulic components or actuators, starting the corresponding work process. When the electromagnet is de-energized, the valve core returns to the initial position, the valve closes, cuts off the flow path of hydraulic oil, and stops supplying oil to the corresponding part. The energized or de-energized states of the solenoid directional valve 5 and the solenoid ball valve 6 when the roll 1 is in different states are shown in Table 1.
[0037] Table 1
[0038]
[0039] According to several embodiments of this utility model, the electromagnetic directional valve 5 and the hydraulic cylinder 3 are connected via hydraulic pipelines. The hydraulic pipelines can be laid according to the actual space and structural requirements of the equipment, allowing for greater flexibility in the installation positions of the electromagnetic directional valve 5 and the hydraulic cylinder 3, without being limited by the direct connection distance between them.
[0040] According to several embodiments of the present invention, the electromagnetic reversing valve 5 includes a pressure port 9 and a return port 10. The electromagnetic reversing valve 5 can be turned to the pressure port 9, so that the hydraulic cylinder 3 switches to the extension action.
[0041] According to several embodiments of the present invention, the electromagnetic reversing valve 5 can be turned to the return port 10, so that the hydraulic cylinder 3 switches to a retraction action.
[0042] Specifically, the hydraulic cylinder 3 has a piston. When the solenoid directional valve 5 is turned to the pressure port 9, the piston of the hydraulic cylinder 3 can be pushed out by the pressure oil, causing the hydraulic cylinder 3 to extend. Conversely, when the solenoid directional valve 5 is turned to the return port 10, a certain pressure is applied from the outside, pushing the piston of the hydraulic cylinder 3 in, causing the hydraulic cylinder 3 to retract. By turning the solenoid directional valve 5 to different ports (pressure port 9 or return port 10), the extension or retraction of the piston of the hydraulic cylinder 3 is achieved. When the piston of the hydraulic cylinder 3 extends, since the hydraulic cylinder 3 is connected to the roller 1, the roller 1 is inserted into the retaining plate 2 and locked.
[0043] According to several embodiments of the present invention, the electromagnetic reversing valve 5 includes a three-position four-way electromagnetic reversing valve 5, which is a Y-type three-position four-way electromagnetic reversing valve 5.
[0044] According to several embodiments of this utility model, the hydraulic valve assembly 4 further includes a one-way throttle valve 7 connected to the solenoid ball valve 6, and a safety relief valve 8 connected to the one-way throttle valve 7. The one-way throttle valve 7 can unidirectionally regulate the hydraulic oil in the hydraulic cylinder 3, allowing the hydraulic oil to flow in a set direction, and the flow rate can be changed by adjusting the size of the throttle orifice. The safety relief valve 8 can automatically open the relief channel when the pressure of the hydraulic system exceeds its set safety threshold, draining excess hydraulic oil back into the hydraulic cylinder 3, thereby preventing the system pressure from continuing to rise and effectively protecting the integrity and safety of the entire hydraulic system.
[0045] According to several embodiments of the present invention, the rolling mill 100 with a retaining plate further includes a fixing plate 11, through which the roll 1 can pass to fix its position. The fixing plate 11 further fixes the roll 1, reducing the risk of the roll 1 shaking due to vibrations in the working environment during the steel rolling process.
[0046] According to several embodiments of the present invention, the retaining plate 2 has a cavity that matches the size of the roll 1, allowing the roll 1 to extend into the cavity of the retaining plate 2. Specifically, the roll 1 extends into the cavity of the retaining plate 2 via a bearing seat 12. The matching size of the cavity of the retaining plate 2 with the roll 1 ensures that the roll 1 can be fully locked after extending into the cavity of the retaining plate 2, without the risk of loosening.
[0047] According to several embodiments of the present invention, the rolling mill 100 with a retaining plate also includes a rolling mill archway 13, which is connected to the retaining plate.
[0048] The foregoing embodiments have provided a detailed description of the rolling mill 100 with a retaining plate according to this utility model. Thus, the embodiments of this disclosure have been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.
[0049] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.
Claims
1. A rolling mill with a retaining plate, characterized in that, include: Rolls; A hydraulic cylinder connected to the roll, the hydraulic cylinder being able to extend or retract; A hydraulic valve assembly connected to the hydraulic cylinder, the hydraulic valve assembly causing the hydraulic cylinder to switch between an extension action and a retraction action; A retaining plate, into which the roll extends and is locked in place when the hydraulic cylinder extends.
2. The rolling mill with a retaining plate according to claim 1, characterized in that, The hydraulic valve group includes a solenoid directional valve and a solenoid ball valve connected in sequence, wherein the solenoid directional valve is connected to the hydraulic cylinder and the solenoid ball valve is connected to the roll.
3. The rolling mill with a retaining plate according to claim 2, characterized in that, The electromagnetic reversing valve is connected to the hydraulic cylinder via a hydraulic pipeline.
4. The rolling mill with a retaining plate according to claim 3, characterized in that, The electromagnetic directional valve includes a pressure port and a return port. The electromagnetic directional valve can be turned to the pressure port, so that the hydraulic cylinder switches to an extension action.
5. The rolling mill with a retaining plate according to claim 4, characterized in that, The electromagnetic reversing valve can be turned to the return port, causing the hydraulic cylinder to switch to a retraction action.
6. The rolling mill with a retaining plate according to claim 2, characterized in that, The electromagnetic directional valve includes a three-position four-way electromagnetic directional valve, which is a Y-type three-position four-way electromagnetic directional valve.
7. The rolling mill with a retaining plate according to claim 2, characterized in that, The hydraulic valve assembly also includes a one-way throttle valve connected to the solenoid ball valve, and a safety relief valve connected to the one-way throttle valve.
8. The rolling mill with a retaining plate according to claim 1, characterized in that, The mill with a retaining plate also includes a fixing plate through which the rolls can pass to fix their position.
9. The rolling mill with a retaining plate according to claim 1, characterized in that, The retaining plate has cavities that match the size of the roll, and the roll can extend into the cavities of the retaining plate.
10. The rolling mill with a retaining plate according to claim 1, characterized in that, The rolling mill also includes a rolling mill stand, and the retaining plate is connected to the rolling mill stand.