A rapid conveying device for high-temperature continuous casting billets based on direct rolling of unheated continuous casting.

Abstract

This disclosure relates to the technical field of steel rolling production. One embodiment of this disclosure provides a high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling. The device includes: an equipment frame and several support rollers, all rotatably connected inside the equipment frame; rolling rods, all rotatably connected inside the equipment frame; a rapid propulsion component disposed within the equipment frame; a positioning and supplementing component disposed at the top of the equipment frame; and a feeding component including a pair of first hydraulic cylinders, each disposed on both sides of the equipment frame. A connecting frame is provided at the output end of each first hydraulic cylinder, and several holding rollers are rotatably connected between the connecting frames. Any one of the support rollers is rotated by a motor. This technical solution solves the technical problem in the prior art where traditional conveying devices generally suffer from insufficient temperature holding capacity and low conveying efficiency, leading to excessive temperature drop of the continuous casting billet during conveying, thus failing to meet the temperature requirements of unheated direct rolling.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of steel rolling production, and more specifically, to a high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling. Background Technology

[0002] In the steel rolling industry, the unheated continuous casting direct rolling process is a key technology for achieving energy conservation, emission reduction, and high-efficiency production. Its core lies in maintaining the high temperature of the continuously cast billet and rapidly conveying it to the rolling process. However, traditional conveying devices generally suffer from the dual bottlenecks of insufficient temperature holding capacity and low conveying efficiency, resulting in excessive temperature drop of the continuously cast billet during the conveying process. This fails to meet the temperature requirements of unheated direct rolling and severely restricts the widespread application of this process.

[0003] Existing conveying technologies have significant drawbacks: Firstly, conventional roller conveyors use open-air transport, resulting in intense heat exchange between the continuously cast billet and the air during transport. Especially when the transport distance exceeds 100 meters, the temperature drop can reach 200-300℃, exceeding the temperature range required for steel rolling (the temperature drop should be controlled within 50℃). The billet exiting the mill at 1150℃ has already dropped to 900℃ by the time it reaches the mill via a traditional roller conveyor, necessitating the restart of the heating furnace for reheating. This not only increases energy consumption by 15%-20% but also extends the production cycle. Secondly, traditional equipment lacks a coordinated design for dynamic temperature control and rapid transport. The transport speed is only 0.5-1 m / s, and the transport rhythm cannot be adjusted in real time according to the billet temperature, making it extremely unsuitable for handling continuously cast billets of different specifications.

[0004] Furthermore, existing equipment mostly employs passive insulation measures, such as installing simple insulation covers above the roller conveyor. However, these measures have poor sealing performance and the insulation materials have low thermal resistance, making it difficult to withstand heat dissipation from airflow during high-speed conveying. With the increasing demand for low-carbon production and intelligent manufacturing in the steel industry, traditional conveying devices, due to drawbacks such as "failure to control temperature drop, low conveying efficiency, and insufficient self-adaptive capability," have become a technical bottleneck restricting the promotion of unheated continuous casting and direct rolling processes. There is an urgent need to develop new devices with efficient insulation, dynamic temperature control, and rapid conveying functions to achieve the process goal of "maintaining high-temperature conditions and rapid, precise conveying" of continuously cast billets, thereby driving the upgrading of steel rolling production towards energy conservation and high efficiency. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling, which solves the technical problem that traditional conveying devices in the prior art generally have the dual bottlenecks of insufficient temperature holding capacity and low conveying efficiency, resulting in excessive temperature drop of the continuous casting billet during the conveying process, which cannot meet the temperature requirements of unheated direct rolling.

[0006] According to one aspect, at least one embodiment of this disclosure provides a high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling, comprising:

[0007] The equipment frame and several support rollers, all of which are rotatably connected inside the equipment frame;

[0008] A feeding assembly, which is mounted on the equipment frame;

[0009] A plurality of rolling rods and a rapid propulsion assembly, wherein the rolling rods are rotatably connected inside the equipment frame and the rapid propulsion assembly is disposed in the equipment frame;

[0010] A positioning and compensation component is disposed on the top of the equipment rack;

[0011] The feeding assembly includes a pair of first hydraulic cylinders, each of which is located on both sides of the equipment frame. A connecting frame is provided at the output end of the first hydraulic cylinder, and several retaining rollers are rotatably connected between the connecting frames. Any one of the supporting rollers is rotated by a motor.

[0012] As a further technical solution, the rapid propulsion component includes a pair of rotating wheels, both of which are rotatably connected to both sides inside the equipment frame, and the surfaces of the rotating wheels are provided with transmission grooves.

[0013] As a further technical solution, a transmission belt is fitted inside the transmission groove, and several push rods are connected between the transmission belts. One of the rotating wheels has an external gear on its surface. A drive motor is installed on the top of the equipment frame, and a drive gear is provided at the output end of the drive motor. The drive gear meshes with the external gear.

[0014] As a further technical solution, the positioning and compensation component includes a pair of second hydraulic cylinders, which are respectively disposed on the two sides of the equipment frame, and the output end of the second hydraulic cylinder is connected to a crossbar.

[0015] As a further technical solution, a pair of telescopic cylinders are provided at the lower end of the crossbar, and a positioning push plate is provided at the output end of the telescopic cylinders.

[0016] As a further technical solution, the thickness of the push rod is greater than the thickness of the workpiece.

[0017] As a further technical solution, the support roller and the rolling rod are located at the same plane height.

[0018] As a further technical solution, the rotating wheel has an overall annular structure.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the feeding assembly adjusts the height of the holding roller through the first hydraulic cylinder. When the continuous casting billet enters, the holding roller is lowered and then raised to form an upper and lower clamping structure with the support roller. The high-temperature resistant silicone layer on the surface of the holding roller increases friction and prevents scratches. The motor drives the support roller to rotate, realizing the stable reception and initial conveying of the continuous casting billet, solving the problem of unstable conveying in traditional devices, and laying the foundation for subsequent rapid advancement.

[0021] 2. In this disclosure, the drive motor of the rapid propulsion component drives the rotating wheel through gear transmission. The rotating wheel generates continuous thrust for the push rod through the transmission groove and transmission belt. The thickness of the push rod is adapted to the billet, and the heat-resistant alloy material can withstand high temperatures. The transmission belt has a built-in steel wire reinforcement layer to ensure transmission stability. The conveying speed is fast, which shortens the continuous casting billet conveying time, reduces temperature drop, meets the temperature requirements of unheated direct rolling, and improves conveying efficiency.

[0022] 3. In this disclosure, the height of the second hydraulic cylinder of the positioning and compensation component is adjusted to match the thickness of the billet, the telescopic cylinder drives the positioning push plate to move horizontally, the ceramic wear-resistant layer on the surface of the positioning push plate is wear-resistant, and the tail of the billet is gently pushed to compensate for the stroke deviation, ensuring that the continuous casting billet accurately enters the next process, solving the problem of inaccurate positioning of traditional devices, ensuring the accuracy of process connection, and improving the reliability of the entire conveying device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0025] Figure 2 This is an isometric drawing of the present disclosure;

[0026] Figure 3 This is an isometric sectional view of the present disclosure;

[0027] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0028] In the diagram: 1. Equipment frame; 2. Support roller; 3. Rolling rod; 4. Feeding assembly; 4-1. First hydraulic cylinder; 4-2. Connecting frame; 4-3. Holding roller; 5. Rapid propulsion assembly; 5-1. Rotating wheel; 5-2. Transmission groove; 5-3. Transmission belt; 5-4. Propulsion rod; 5-5. External gear; 5-6. Drive motor; 5-7. Drive gear; 6. Positioning and compensation assembly; 6-1. Second hydraulic cylinder; 6-2. Crossbar; 6-3. Telescopic cylinder; 6-4. Positioning push plate. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-4 As shown, it illustrates a high-temperature continuous casting billet rapid conveying device based on direct rolling of unheated continuous casting in an embodiment of this disclosure, comprising:

[0036] The equipment frame 1 and several support rollers 2 are rotatably connected inside the equipment frame 1.

[0037] Feeding assembly 4 is mounted on the equipment frame 1;

[0038] A plurality of rolling rods 3 and a rapid propulsion assembly 5, wherein the rolling rods 3 are rotatably connected inside the equipment frame 1, and the rapid propulsion assembly 5 is disposed in the equipment frame 1;

[0039] Positioning and supplementing component 6, wherein the positioning and supplementing component 6 is disposed on the top of the equipment frame 1;

[0040] The feeding assembly 4 includes a pair of first hydraulic cylinders 4-1, which are both located on both sides of the equipment frame 1. The output end of the first hydraulic cylinder 4-1 is provided with a connecting frame 4-2. Several retaining rollers 4-3 are rotatably connected between the connecting frames 4-2, and any one of the supporting rollers 2 is rotated by a motor.

[0041] In some examples, a feeding assembly 4 is designed to receive and convey rolled steel. This assembly uses the first hydraulic cylinders 4-1 on both sides of the equipment frame 1 as its power source. The connecting frame 4-2 at its output end can drive the holding roller 4-3 to move up and down. When the continuously cast billet enters, the first hydraulic cylinder 4-1 retracts, causing the holding roller 4-3 to descend, and the billet rolls along the support roller 2. Subsequently, the hydraulic cylinder extends, and the holding roller 4-3 abuts against the upper surface of the billet, cooperating with the motor-driven support roller 2 to form an upper and lower clamping conveying structure, preventing billet deviation. The surface of the holding roller 4-3 is covered with a high-temperature resistant silicone layer to avoid scratching the surface of the high-temperature billet, while increasing friction to ensure stable conveying. Through the lifting and lowering adjustment of the first hydraulic cylinder 4-1 and the clamping cooperation between the holding roller 4-3 and the support roller 2, the feeding assembly 4 achieves stable reception and initial conveying of the continuously cast billet.

[0042] like Figures 1-4As shown in the figure, the rapid propulsion component 5 in this embodiment includes a pair of rotating wheels 5-1. Both of the rotating wheels 5-1 are rotatably connected to both sides inside the equipment frame 1. The rotating wheels 5-1 have a transmission groove 5-2 on their surface. A transmission belt 5-3 is fitted inside the transmission groove 5-2. Several push rods 5-4 are connected between the transmission belts 5-3. One of the rotating wheels 5-1 has an external gear 5-5 on its surface. A drive motor 5-6 is installed on the top of the equipment frame 1. A drive gear 5-7 is provided at the output end of the drive motor 5-6. The drive gear 5-7 meshes with the external gear 5-5.

[0043] In some examples, a rapid propulsion assembly 5 is designed to accelerate the forward movement of the workpiece. This assembly centers on the rotating wheels 5-1 on both sides of the equipment frame 1. A transmission belt 5-3 within the transmission groove 5-2 on the surface of the wheel 5-1 connects to a propulsion rod 5-4. When the drive motor 5-6 meshes with the external gear 5-5 via the drive gear 5-7, driving the rotating wheels 5-1 to rotate, the transmission belt 5-3 drives the propulsion rod 5-4 to generate continuous thrust, which is 2-3 times the conveying speed of the support roller 2. The propulsion rod 5-4 is made of heat-resistant alloy, allowing it to apply thrust close to the bottom surface of the billet while avoiding scratches. The transmission belt 5-3 has a built-in steel wire reinforcement layer to ensure transmission stability in high-temperature environments. Through the speed-increasing design of the gear transmission and the linkage between the transmission belt 5-3 and the propulsion rod 5-4, the rapid propulsion assembly 5 achieves high-speed pushing of the continuously cast billet, shortening the conveying time.

[0044] like Figures 1-4 As shown in the figure, the positioning and supplementing component 6 in this embodiment includes a pair of second hydraulic cylinders 6-1. The second hydraulic cylinders 6-1 are respectively disposed on the two sides of the equipment frame 1. The output end of the second hydraulic cylinder 6-1 is connected to a crossbar 6-2. The lower end of the crossbar 6-2 is provided with a pair of telescopic cylinders 6-3. The output end of the telescopic cylinder 6-3 is provided with a positioning push plate 6-4.

[0045] In some examples, a positioning and compensation component 6 is designed to compensate for the final advance stroke and ensure the workpiece accurately enters the next process. This component uses the second hydraulic cylinders 6-1 on both sides of the equipment frame 1 as height adjustment mechanisms. The telescopic cylinder 6-3 at the lower end of the output crossbar 6-2 (its stroke can drive the positioning push plate 6-4 to move horizontally) is also included. When the continuously cast billet approaches the entrance of the next process, the second hydraulic cylinder 6-1 first adjusts the height of the crossbar 6-2 to match the billet thickness. Then, the telescopic cylinder 6-3 extends, and the positioning push plate 6-4 (with a ceramic wear-resistant layer on its surface) gently pushes the tail of the billet to compensate for the final stroke deviation. Through the height adaptation of the second hydraulic cylinder 6-1, the precise advance of the telescopic cylinder 6-3, and pressure sensing protection, the positioning and compensation component 6 achieves precise positioning of the billet, ensuring the accuracy of process transitions.

[0046] For example, such as Figure 1As shown, the thickness of the push rod 5-4 is greater than the thickness of the workpiece.

[0047] In some examples, by increasing the recommended thickness of the dry end, it is possible to face the end of the rolling mill when rotating upwards at one end, ensuring that the rolling mill movement can continue continuously.

[0048] For example, such as Figure 1 As shown, the support roller 2 and the rolling rod 3 are located at the same plane height.

[0049] In some examples, by using the same height, it is ensured that the rolled steel does not hit the rolling rod 3 or become suspended in mid-air upon entry.

[0050] For example, such as Figure 1 As shown, the rotating wheel 5-1 has an overall ring-shaped structure.

[0051] In some examples, the cylindrical structure ensures that the distribution position of the rollers 3 is not affected, and that the transmission belt 5-3 can bypass the top of the rollers 3 at the edge.

[0052] In actual use: the equipment frame 1 is fixed, the support roller 2 and the rolling rod 3 are rotatably connected inside the equipment frame 1 and are located on the same plane, the first hydraulic cylinder 4-1 of the feeding assembly 4 is installed on both sides of the equipment frame 1, the output end is connected to the connecting frame 4-2, the retaining roller 4-3 is installed between the connecting frames 4-2, the rotating wheel 5-1 of the rapid propulsion assembly 5 is installed inside the equipment frame 1, the transmission groove 5-2 is fitted with the transmission belt 5-3, the transmission belt 5-3 is connected to the push rod 5-4, the external gear 5-5 of the rotating wheel 5-1 meshes with the drive gear 5-7 of the drive motor 5-6, and the positioning compensation... The second hydraulic cylinder 6-1 of the foot assembly 6 is installed on both sides of the equipment frame 1, and the output end is connected to the crossbar 6-2. The lower end of the crossbar 6-2 is equipped with a telescopic cylinder 6-3 and a positioning push plate 6-4. When in use, the first hydraulic cylinder 4-1 lowers the holding roller 4-3, and the continuous casting billet enters along the support roller 2. The hydraulic cylinder raises the holding roller 4-3 to cooperate with the support roller 2 for conveying. The drive motor 5-6 drives the rotating wheel 5-1 to make the transmission belt 5-3 and the push rod 5-4 quickly advance the continuous casting billet. After the positioning and supplementing assembly 6 adjusts the height, the telescopic cylinder 6-3 pushes the positioning push plate 6-4 to supplement the stroke.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A high-temperature continuous casting billet rapid conveying device based on direct rolling of unheated continuous casting, characterized in that, include: The equipment frame (1) and several support rollers (2) are rotatably connected inside the equipment frame (1); Feeding assembly (4), which is mounted on the equipment frame (1); A plurality of rolling rods (3) and a rapid propulsion assembly (5) are provided, wherein the rolling rods (3) are rotatably connected inside the equipment frame (1) and the rapid propulsion assembly (5) is disposed in the equipment frame (1); Positioning and supplementing component (6), the positioning and supplementing component (6) is disposed on the top of the equipment rack (1); The feeding assembly (4) includes a pair of first hydraulic cylinders (4-1), each of which is located on both sides of the equipment frame (1). The output end of each first hydraulic cylinder (4-1) is provided with a connecting frame (4-2), and several retaining rollers (4-3) are rotatably connected between the connecting frames (4-2). Any one of the support rollers (2) is rotated by a motor.

2. The high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling as described in claim 1, characterized in that, The rapid propulsion assembly (5) includes a pair of rotating wheels (5-1), both of which are rotatably connected to both sides inside the equipment frame (1), and the surface of the rotating wheels (5-1) is provided with a transmission groove (5-2).

3. The high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling as described in claim 2, characterized in that, A transmission belt (5-3) is fitted inside the transmission groove (5-2). Several push rods (5-4) are connected between the transmission belts (5-3). An external gear (5-5) is provided on the surface of one of the rotating wheels (5-1). A drive motor (5-6) is installed on the top of the equipment frame (1). A drive gear (5-7) is provided at the output end of the drive motor (5-6). The drive gear (5-7) meshes with the external gear (5-5).

4. The high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling as described in claim 1, characterized in that, The positioning and compensation component (6) includes a pair of second hydraulic cylinders (6-1), which are respectively disposed on the two sides of the equipment frame (1), and the output end of the second hydraulic cylinder (6-1) is connected to a crossbar (6-2).

5. A high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling as described in claim 4, characterized in that, A pair of telescopic cylinders (6-3) are provided at the lower end of the crossbar (6-2), and a positioning push plate (6-4) is provided at the output end of the telescopic cylinder (6-3).

6. A high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling as described in claim 3, characterized in that, The thickness of the push rod (5-4) is greater than the thickness of the workpiece.

7. A high-temperature continuous casting billet rapid conveying device based on unheated continuous casting direct rolling as described in claim 1, characterized in that, The support roller (2) and the rolling rod (3) are located at the same plane height.

8. A high-temperature continuous casting billet rapid conveying device based on direct rolling of unheated continuous casting as described in claim 2, characterized in that, The rotating wheel (5-1) has an overall ring-shaped structure.

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