A water cutting plate on the entrance of a strip steel rolling mill
By eliminating the cylinder and connecting rod mechanism in the water cutting plate on the inlet of the strip steel rolling mill and adopting the design of guide-stationary driving, the problem of easy deformation and water leakage in the inlet water cutting plate structure in the prior art is solved, and the effect of simplification of structure, convenient maintenance and extended service life is achieved.
Patent Information
- Application Number
- CN202420968640.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing strip rolling mill water cutting plates rely on cylinders and connecting rod mechanisms, and are prone to problems such as uneven stress, large friction resistance, easy deformation and damage, resulting in lax closure and frequent water leakage.
By eliminating the cylinder and connecting rod mechanism, the integrated design of intermediate pipe, horizontal pipe, vertical plate and guide is adopted, and the buffer spring and welding are used to fix the interconnection between each other, the water cutting board on the entrance is synchronously driven with the guide, simplifying the structure and easy maintenance.
The normal opening and closing of the water cutting board at the entrance is achieved, the structure is simplified, the maintenance is convenient, the service life is extended, the stress is more uniform, and the water leakage is reduced.
Smart Images
Figure CN222695611U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of strip steel rolling mills, in particular to a water cutting plate on an inlet of a strip steel rolling mill. Background Art
[0002] Rolling is a metal processing technology that is a pressure processing method in which a metal billet is passed through the gap (of various shapes) between a pair of rotating rollers, where the compression of the rollers reduces the cross-section of the material and increases its length.
[0003] Strip rolling mill is a mechanical equipment for rolling strip steel. Figure 1 As shown, the strip mill 100 includes an upper support roll 11, an upper working roll 12, a lower support roll 13 and a lower working roll 14. The strip is input between the upper working roll 12 and the lower working roll 14 for rolling. The strip itself is hot, and the upper working roll 12 and the lower working roll 14 will also heat up during rolling. The temperature increase will affect the shape and working state of the upper and lower working rolls, and further affect the rolling quality. Therefore, a cooling water nozzle 2 is set in the strip mill. Figure 1 As shown, a plurality of cooling water nozzles 2 are provided in the strip rolling mill 100 for spraying cooling water on the upper support roll 11 , the upper working roll 12 , the lower support roll 13 and the lower working roll 14 for cooling.
[0004] However, during the production of strip steel, cooling water cannot come into direct contact with the surface of the strip steel. For this purpose, multiple water cut-off plates 3 are provided. The water cut-off plates are in close contact with the surfaces of the working rolls and the support rolls, and the cooling water is discharged from both sides of the water cut-off plates to prevent the cooling water from directly contacting the surface of the high-temperature strip steel.
[0005] The highest position in the vertical direction is the inlet upper water cut-off plate 31. Figure 2 and Figure 3 As shown in the figure, the current inlet upper water cut-off plate is driven by a cylinder and connected by a connecting rod to achieve opening and closing. Since the cylinder is only set on one side of the inlet upper water cut-off plate, the inlet upper water cut-off plate is prone to uneven force, and coupled with the large friction resistance, the cylinder and the connecting rod are prone to deformation and damage, resulting in the inlet upper water cut-off plate not closing tightly, resulting in water leakage.
[0006] The utility model attempts to provide a water cutting plate on the inlet of a strip steel rolling mill, which can realize normal opening and closing while omitting the cylinder and the connecting rod mechanism, and has a simplified structure, is easy to maintain and has a prolonged service life. Utility Model Content
[0007] The utility model attempts to provide a water cutting plate on the inlet of a strip steel rolling mill, which can realize normal opening and closing while omitting the cylinder and the connecting rod mechanism, and has a simplified structure, is easy to maintain and has a prolonged service life.
[0008] The utility model provides a water cut-off plate on the inlet of a strip mill, comprising a main body of the water cut-off plate on the inlet of the strip mill and a connecting part; the connecting part comprises: an intermediate tube; a transverse tube, the transverse tube is vertically fixedly connected to the intermediate tube, and the transverse tube is axially symmetrical with respect to the intermediate tube; a bolt locating pin, one end of the intermediate tube is fixedly connected to the main body of the water cut-off plate on the inlet of the strip mill through the bolt locating pin; and two vertical plates, the two vertical plates are arranged on the transverse tube and vertically fixedly connected to the transverse tube, the two vertical plates are axially symmetrical with respect to the intermediate tube, and the two vertical plates are fixedly connected to the guide of the strip mill.
[0009] Furthermore, a buffer spring is sleeved on the portion where the cross tube is connected to the bolt locating pin.
[0010] Furthermore, the water cutting plate on the inlet of the strip rolling mill also includes more than two even-numbered vertical plates, which are arranged on the transverse tube and vertically fixedly connected to the transverse tube, and the more than two even-numbered vertical plates are symmetrical with respect to the intermediate tube axis, and the more than two even-numbered vertical plates are fixedly connected to the guide of the strip rolling mill.
[0011] Furthermore, an end plate is provided at the end of the transverse tube to close the end of the transverse tube.
[0012] Furthermore, the intermediate tube, the transverse tube and the vertical plate are fixed to each other by welding.
[0013] According to the water cutting plate on the inlet of the strip rolling mill that the utility model attempts to provide, the water cutting plate on the inlet of the strip rolling mill and the guide are driven synchronously by fixedly connecting the vertical plate and the guide, which not only saves the original cylinder and connecting rod mechanism, simplifies the structure and facilitates maintenance, but also makes the force on the water cutting plate on the inlet of the strip rolling mill more uniform, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Shown is a schematic side view of a strip rolling mill.
[0015] Figure 2 Shown is a schematic side view of a water cut-off plate on the inlet of a strip rolling mill in the prior art.
[0016] Figure 3 The figure shows a schematic top view of a water cut-off plate on the inlet of a strip mill in the prior art.
[0017] Figure 4 Shown is a side schematic view of a water cut plate on the inlet of a strip rolling mill according to an embodiment of the utility model.
[0018] Figure 5 Shown is a top view schematic diagram of the connection portion of the water cutter plate on the inlet of a strip rolling mill according to an embodiment of the utility model.
[0019] Reference numerals:
[0020] 100: Strip rolling mill;
[0021] 11: upper support roll; 12: upper working roll; 13: lower support roll; 14: lower working roll; 2: cooling water nozzle;
[0022] 3: water cutting plate; 31: main body of water cutting plate on the inlet of strip mill;
[0023] 32: bolt positioning pin; 33: intermediate tube; 34: buffer spring;
[0024] 35: vertical plate; 36: end plate; 37: cross tube; 4: cylinder; 5: connecting rod; 6: guide. DETAILED DESCRIPTION
[0025] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.
[0026] Figure 4 Shown is a side schematic view of a water cut plate on the inlet of a strip rolling mill according to an embodiment of the utility model. Figure 5 Shown is a top view schematic diagram of the connection portion of the water cutter plate on the inlet of a strip rolling mill according to an embodiment of the utility model.
[0027] like Figure 4 and Figure 5 As shown, the embodiment of the utility model provides a water cut plate on the entrance of a strip mill, comprising: a water cut plate body 31 on the entrance of the strip mill and a connecting portion; the connecting portion comprises: an intermediate pipe 33; a transverse pipe 37, the transverse pipe 37 is vertically fixedly connected to the intermediate pipe 33, and the transverse pipe 37 is axially symmetrical with respect to the intermediate pipe 33; a bolt positioning pin 32, one end of the intermediate pipe 33 is fixedly connected to the water cut plate body 31 on the entrance of the strip mill through the bolt positioning pin 32; and two vertical plates 35, the two vertical plates 35 are arranged on the transverse pipe 37 and are vertically fixedly connected to the transverse pipe 37, the two vertical plates 35 are axially symmetrical with respect to the intermediate pipe 33, and the two vertical plates 35 are fixedly connected to the guide 6 of the strip mill 100. A buffer spring 34 is sleeved on the portion where the transverse pipe 37 is connected to the bolt positioning pin 32. The intermediate pipe 33, the transverse pipe 37 and the vertical plates 35 are fixed to each other by welding. An end plate 36 is arranged at the end of the transverse pipe 37 to close the end of the transverse pipe 37.
[0028] The guide is a device used to keep the rolled piece in the correct direction when entering and exiting the roll, thereby ensuring the output and quality of the product. Except for individual cases, guides are usually required to be installed on all rolling mills. The function of the water cut-off plate during steel rolling is to prevent the cooling water of the roll from contacting the surface of the strip. When replacing the roll (commonly known as roll change), the water cut-off plate needs to be opened to a certain position, leaving a certain space so that the roll can be smoothly pulled out of the rolling mill. Therefore, the general action logic process is: normal steel rolling - stop the equipment to prepare for roll change - open the water cut-off plate - withdraw the guide - pull out the roll - lift the old roll - lift the new roll - push the new roll - close the water cut-off plate - push the guide - prepare for steel rolling.
[0029] From the operation process, it was found that the water cutting plate and the guide guard moved in and out basically synchronously, and then the opening and closing of the water cutting plate and the guide guard were designed as an integral whole, which not only saved the cost of accessories, but also reduced the maintenance intensity. At the same time, the force of the water cutting plate pressing on the surface of the roller was balanced and stable, and the water blocking effect was better.
[0030] exist Figure 4 and Figure 5 In the embodiment shown, the vertical plate 35 is welded and fixed to the guide 6. When the guide 6 is pushed forward, the connection part also moves forward under the push of the guide 6, so that the water cutter body 31 on the strip mill entrance is in close contact with the working roll. Therefore, the water cutter body 31 on the strip mill entrance only needs to be connected to the guide 6 and move forward and backward synchronously with the guide 6, and no additional driving cylinders, connecting rods and other components are required, thereby greatly simplifying the structure, facilitating maintenance, and extending the service life.
[0031] A buffer spring 34 is sleeved on the part where the cross tube 37 is connected to the bolt positioning pin 32. By adding the buffer spring 34, the force of the guide 6 on the connection part is buffered, and the pressure of the water cutter body 31 on the strip mill entrance on the working roll is also buffered, which can make the pressure of the water cutter body 31 on the strip mill entrance on the working roll more uniform and stable, and close to the working roll with uniform and stable force during operation, reducing the situation where the wear of the water cutter body 31 on the strip mill entrance is aggravated due to uneven and unstable force.
[0032] Furthermore, the water cutting plate on the inlet of the strip mill may also include more than two even-numbered vertical plates, which are arranged on the transverse tube and fixedly connected to the transverse tube vertically, and the more than two even-numbered vertical plates are symmetrical with respect to the intermediate tube axis, and the more than two even-numbered vertical plates are fixedly connected to the guide of the strip mill, thereby further strengthening the connection strength with the guide 6 and strengthening the thrust of the guide 6.
[0033] An end plate 36 is provided at the end of the transverse tube 37 to close the end of the transverse tube 37. On the one hand, it is to protect the end of the transverse tube 37, and on the other hand, the end 36 is also used as a stopper to ensure that the transverse tube 37 and the intermediate tube 33 can remain aligned when the guide is at the maximum opening.
[0034] According to the water cutting plate on the inlet of the strip rolling mill that the utility model attempts to provide, the water cutting plate on the inlet of the strip rolling mill and the guide are driven synchronously by fixedly connecting the vertical plate and the guide, which not only saves the original cylinder and connecting rod mechanism, simplifies the structure and facilitates maintenance, but also makes the force on the water cutting plate on the inlet of the strip rolling mill more uniform, thereby extending the service life.
[0035] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships 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 cannot be understood as a limitation on the present invention.
[0036] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.
Claims
1. A water cut-off plate at the entrance of a strip mill, comprising: The main body of the water cutting plate on the inlet of the strip mill; It is characterized in that the water cutting plate on the inlet of the strip mill also includes a connecting part, and the connecting part includes: Intermediate tube; A transverse tube, wherein the transverse tube is vertically fixedly connected to the intermediate tube, and the transverse tube is symmetrical with respect to the intermediate tube axis; A bolt positioning pin, through which one end of the intermediate pipe is fixedly connected to the main body of the water cutter plate on the inlet of the strip mill; and Two vertical plates are arranged on the transverse tube and are vertically fixedly connected to the transverse tube. The two vertical plates are symmetrical with respect to the intermediate tube axis and are fixedly connected to the guide of the strip rolling mill.
2. The water cut-off plate at the entrance of a strip mill according to claim 1, characterized in that: A buffer spring is sleeved on the portion where the transverse tube is connected to the bolt locating pin.
3. The water cut-off plate at the entrance of a strip mill according to claim 1, characterized in that: It also includes more than two even-numbered vertical plates, which are arranged on the transverse tube and fixedly connected to the transverse tube vertically, and the more than two even-numbered vertical plates are symmetrical with respect to the intermediate tube axis, and the more than two even-numbered vertical plates are fixedly connected to the guide of the strip rolling mill.
4. The water cut-off plate at the entrance of a strip mill according to claim 1, characterized in that: An end plate is arranged at the end of the transverse tube to close the end of the transverse tube.
5. The water cut-off plate at the entrance of a strip mill according to claim 4, characterized in that: The intermediate tube, the transverse tube and the vertical plate are fixed to each other by welding.