Multi-roller closely packed multi-drive leveler

Abstract

The utility model discloses a kind of multi-roll dense arrangement multi-drive straightening and leveling machine. There are mainly 6 groups of rollers in the straightening and leveling machine, wherein, 3 groups are inner arc transmission rollers, 1 group is outer arc transmission roller, and there are 2 groups of free rollers. Free roller is arranged between adjacent two transmission rollers, the roll pitch between adjacent rollers, dense arrangement roller mode is adopted, transmission roller and free roller are arranged in rack according to the roll arrangement curve of straightening section and horizontal section of continuous casting machine roll system, three inner arc rollers with drive are lifting rollers, certain roll gap opening can be adjusted, to satisfy drawing blank, overhaul and pinch ingot; using this structure straightening and leveling machine, avoid the structure form of multiple straightening and leveling machine large roll pitch, optimize the complex structure of multiple sector, make full use of the roll system length of straightening stage and horizontal stage, thereby effectively improve the productivity of continuous casting machine while guaranteeing the bulging amount of continuous casting blank and comprehensive strain control within reasonable range.

Description

Technical Field

[0001] This utility model relates to a continuous casting casting device, and more particularly to a multi-roll close-packed multi-drive straightening machine. Background Technology

[0002] In the continuous casting process of an arc-shaped continuous casting machine, due to the frictional resistance of the clamping rollers on the billet and the large reaction force during the straightening process, a drive system is needed to ensure that the billet is smoothly pulled out from the sector. Generally, slab continuous casting machines adopt a mode of decentralized drive through multiple sector sections via motor reducers; billet continuous casting machines, due to fewer support rollers, generally use multiple straightening machines for centralized drive. Both modes have certain advantages and disadvantages. The mode of moving the motor and reducer to a fixed position and driving through multiple sector sections via motor reducers requires setting drive rollers in multiple sector sections and using universal couplings to connect the motor reducer and drive rollers. This results in a complex sector section structure, heavy equipment, the need to pull out guide rails for maintenance, a large footprint, and a large flow spacing, making it inconvenient for multi-strand continuous casting machines with more than two strands. Connecting the reducer motor directly to the drive roller of the tension leveler and adopting a mode of centralized use of multiple tension levelers to drive the tension leveler often results in a large force on the tension leveler. In order to maintain the rigidity of the tension leveler, each tension leveler frame must be made large enough, which leads to a relatively large roller distance in the tension leveler, which is basically about 1.5 meters. This causes a huge waste of metallurgical length, and sometimes it is necessary to adopt a larger basic radius of the casting machine or be forced to reduce the tensioning speed.

[0003] The main problem at present is:

[0004] 1) The mode of moving the motor and reducer to a fixed position and driving multiple sector segments through the motor and reducer requires setting drive rollers in multiple sector segments and using universal couplings to connect the motor, reducer and drive rollers. This results in a complex sector segment structure, heavy equipment, the need to pull out guide rails for maintenance, a large amount of factory space required, and large flow spacing. Both the equipment investment cost and daily production cost are high, making it inconvenient to apply to multi-strand continuous casting machines with more than two strands.

[0005] Other minor issues include:

[0006] 2) Connecting the reducer motor directly to the drive roller of the tension leveler and adopting a mode of centralized use of multiple tension levelers results in relatively large roller spacing, generally around 1.5 meters, which leads to a huge waste of metallurgical length. Sometimes, it is necessary to adopt a larger basic radius of the casting machine or be forced to reduce the tensioning speed. Summary of the Invention

[0007] The purpose of this utility model is to provide a multi-roll close-packed multi-drive straightening machine. Using this straightening machine, a multi-strand continuous casting machine can be arranged closely, effectively reducing the strand spacing and achieving a compact layout.

[0008] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0009] A multi-roller close-packed multi-drive tension leveling machine is provided, wherein the tension leveling machine is equipped with drive rollers, and a drive motor and a reducer are configured for each drive roller; the drive motor and the reducer are arranged within the footprint of the tension leveling machine.

[0010] Furthermore, the tension straightening machine has 3 sets of inner arc drive rollers, 1 set of outer arc drive rollers, and 2 sets of free rollers, and the tension straightening machine is a multi-roller densely arranged multi-drive structure.

[0011] Furthermore, the drive motor is in a vertical position.

[0012] Furthermore, the drive motor and reducer are cooled by cooling water.

[0013] Furthermore, the drive motor and reducer are located on one side of the tension leveling machine frame.

[0014] A multi-roller, densely packed, multi-drive tension leveling machine includes an upper frame and a lower frame. The machine comprises three inner arc drive rollers mounted on the upper frame and one outer arc drive roller mounted on the lower frame. It includes three inner arc roller drive motors and one outer arc roller drive motor. The three inner arc roller drive motors are located on the side of the upper frame and are mounted on the upper frame, with their drive output ends facing downwards. Each inner arc roller drive motor corresponds to one of the three inner arc drive rollers. For each paired inner arc roller drive motor and inner arc drive roller, a configuration is provided. The machine includes a speed reducer. The drive output end of the inner arc roller drive motor is connected to the drive input end of the inner arc transmission roller via the speed reducer. An outer arc roller drive motor is located between the upper and lower frames, mounted on the lower frame. The drive output end of the outer arc roller drive motor faces downward and corresponds to the outer arc transmission roller. A speed reducer is configured for both the outer arc roller drive motor and the outer arc transmission roller. The drive output end of the outer arc roller drive motor is connected to the drive input end of the outer arc transmission roller via the speed reducer. The inner and outer arc roller drive motors and their respective speed reducers are located within the footprint of the tension leveling machine.

[0015] Furthermore, the tension leveling machine has a multi-roller, closely spaced, multi-drive structure.

[0016] Furthermore, the inner arc roller drive motor and the outer arc roller drive motor are in a vertical position.

[0017] Furthermore, the inner arc roller drive motor and the outer arc roller drive motor, as well as their respective reducers, are cooled by cooling water.

[0018] Furthermore, the inner arc roller drive motor and the outer arc roller drive motor, along with their respective reducers, are located on one side of the tension leveling machine frame.

[0019] Compared with the prior art, the advantages of this multi-roller densely packed multi-drive tension straightening machine are as follows:

[0020] 1) For continuous casting machines with more than two strands, the continuous casting straightening machine is equipped with drive rollers, and the reducer motor is directly connected to the sector-shaped drive rollers. The drive rollers are equipped with drive motors and reducers. The drive motors and reducers are arranged within the footprint of the continuous casting straightening machine and are located on one side of the machine frame. The structure of the straightening machine can be optimized to the maximum extent, realizing the close arrangement of multi-strand continuous casting machines, effectively reducing the strand spacing, and achieving a compact layout.

[0021] 2) The straightening machine has 3 sets of inner arc drive rollers, 1 set of outer arc drive rollers, and 2 sets of free rollers. This kind of multi-roll close-packed multi-drive mode of the straightening machine can optimize the structure to the maximum extent. The compact structure of the multi-roll close-packed multi-drive mode with fewer frames can not only meet the power requirements of billet pulling and ingot feeding, but also adapt to the straightening of slabs with liquid cores, effectively controlling the bulging deformation of the billet. Attached Figure Description

[0022] Figure 1 This is a side view of the multi-roller close-packed multi-drive tension straightening machine of this utility model;

[0023] Figure 2 for Figure 1 Left view of the straightening machine. Detailed Implementation

[0024] To facilitate a clear and accurate description of the technical solution later in the text, the following definitions are made in advance:

[0025] Definition 1: The term "footprint area" as used in this article refers to the projected area of ​​an object on the ground. For example, the term "footprint area of ​​the main structure of the straightening machine" as used in this article refers to the projected area of ​​the main structure of the straightening machine on the ground.

[0026] The specific embodiments of this utility model are further described below:

[0027] This embodiment provides a multi-roll close-packed multi-drive tension leveling machine with a small overall footprint, thereby making the continuous casting machine more compact.

[0028] See Figure 1 and Figure 2The tension leveling machine of this embodiment has a similar main structure to the existing tension leveling machine, mainly including a base 7, a lower frame 6, an upper frame 2, a pressing cylinder 3, a transmission roller 9, a free roller 5, a movable beam 8, a drive motor 1, etc.

[0029] More specifically, the tension leveling machine mainly has 6 sets of rollers, of which 3 sets are inner arc drive rollers, 1 set is outer arc drive rollers, and 2 sets are free rollers.

[0030] The roll system, consisting of drive rolls and free rolls, encompasses and overlaps the roll arrangement curves of the straightening and horizontal sections of the 8.5-meter continuous casting machine's roll system. Free rolls are positioned between adjacent drive rolls, and the roll spacing between adjacent rolls utilizes a close-packed roll configuration. The drive rolls and free rolls are arranged within the frame according to the roll arrangement curves of the straightening and horizontal sections of the continuous casting machine's roll system. Three driven inner arc rolls are lifting rolls, allowing adjustment of the roll gap opening to meet the needs of billet drawing, maintenance, and ingot clamping. All outer arc rolls are fixed rolls, with a second set driven and paired with one of the upper driven sets. This structure of the straightening machine enables the continuous casting machine to achieve multi-roll close-packed, multi-drive operation within a limited length, avoiding the large roll spacing structure of multiple straightening machines, optimizing the complex structure of multiple fan-shaped sections, and fully utilizing the roll system length in the straightening and horizontal sections. This effectively increases the continuous casting machine's capacity while ensuring that the billet bulge and overall strain are controlled within a reasonable range. When space is limited, the basic radius of the casting machine can be made smaller.

[0031] The main innovation of the tension leveling machine in this embodiment lies in the arrangement of the drive motor 1 and the reducer, which is significantly different from the existing tension leveling machines.

[0032] Specifically

[0033] In this embodiment, the tension straightening machine is provided with four drive rollers 9, three of which are inner arc drive rollers mounted on the upper frame 2, and one is an outer arc drive roller mounted on the lower frame 6.

[0034] Corresponding to the four transmission rollers 9 mentioned earlier, the tension leveling machine is equipped with four drive motors 1. Three of the drive motors 1 are used to drive three inner arc transmission rollers, and these three drive motors 1 are called inner arc roller drive motors 11. There is also one drive motor 1 among the four drive motors 1 used to drive one outer arc transmission roller, and this drive motor 1 is called outer arc roller drive motor 12.

[0035] Both the inner arc roller drive motor 11 and the outer arc roller drive motor 12 share a common characteristic: the drive motor 1 is arranged in a vertical or nearly vertical position within the footprint of the main structure of the straightening machine.

[0036] More specifically,

[0037] The three inner arc roller drive motors 11 mentioned earlier are set on the side of the upper frame 2. The body of the inner arc roller drive motor 11 is mounted on the upper frame 2. The inner arc roller drive motor 11 is in a vertical state, and the drive output end of the inner arc roller drive motor 11 faces downward and corresponds to the inner arc transmission roller below.

[0038] For each paired inner arc roller drive motor 11 and inner arc transmission roller, a reducer is provided. The drive output end of the inner arc roller drive motor 11 is connected to the drive input end of the inner arc transmission roller through the reducer. The inner arc roller drive motor 11 drives the inner arc transmission roller through the reducer.

[0039] It should be noted that the inner arc roller drive motor 11 is vertically mounted, while the inner arc transmission roller is horizontally mounted. The orientation of the drive output end of the inner arc roller drive motor 11 and the orientation of the drive input end of the inner arc transmission roller are perpendicular to each other. Therefore, the transmission direction of the reducer needs to be adapted to the direction of rotation. However, the direction of rotation of the reducer's transmission direction is already achievable with mature technology and is easy to design and manufacture for those skilled in the art. Therefore, it will not be described in detail in this article.

[0040] The previously mentioned outer arc roller drive motor 12 is positioned between the upper frame 2 and the lower frame 6. The motor body is mounted on the lower frame 6, and the outer arc roller drive motor 12 is in a nearly vertical position. Its drive output end faces downwards and is close to the outer arc transmission roller. A reducer is configured for both the outer arc roller drive motor 12 and the outer arc transmission roller. The drive output end of the outer arc roller drive motor 12 is connected to the drive input end of the outer arc transmission roller via the reducer, thus driving the outer arc roller drive motor 12 through the reducer. The reducer's transmission direction also needs to be adaptably steered.

[0041] It should be noted that the reducers configured for both the inner arc roller drive motor 11 and the outer arc roller drive motor 12 are also located within the footprint of the main structure of the tension leveler. Both the drive motor 1 and the reducer are located on one side of the entire frame.

[0042] The straightening machine is also equipped with two sets of free rollers 5, which are arranged between two adjacent drive rollers 9. The drive rollers 9 and the free rollers 5 are arranged in the frame according to the roller arrangement curves of the straightening section and the horizontal section of the continuous casting machine roller system.

[0043] The drive rollers and the free rollers between them constitute the roller system of the straightening machine. The roller system covers the straightening section and the horizontal section of the continuous casting machine roller system. The roller spacing between adjacent rollers in the roller system adopts a close-packed roller method, that is, the actual roller spacing between adjacent rollers should be less than the calculated roller spacing that can ensure the bulging control requirements of the billet, so that the effective metallurgical length of the casting machine can be calculated up to the exit roller of the straightening machine.

[0044] The innovation of this implementation method for straightening machines lies in:

[0045] 1) For a three-strand slab continuous casting machine, a drive roller is installed in the continuous casting straightening machine. The reducer motor is directly connected to the sector-shaped drive roller, and a drive motor and reducer are configured for each drive roller. The drive motor and reducer are arranged within the footprint of the continuous casting straightening machine, and are located on one side of the machine frame. In this way, the structure of the straightening machine can be optimized to the maximum extent, realizing a compact arrangement of multi-strand continuous casting machines, effectively reducing the small strand spacing, and achieving a compact layout. This solves the problem mentioned in the background art 1), namely, that for each casting strand of the continuous casting machine, a longitudinally arranged motor mounting belt must be reserved next to the straightening machine, and the drive motor is connected to each group of transmission rollers one by one through the reducer and universal coupling, which requires a large amount of plant space and results in a large strand spacing.

[0046] This utility model of a multi-roll, densely packed, multi-drive, compact continuous casting straightening machine also has some minor innovations, as follows:

[0047] 2) The straightening machine of this embodiment has 3 sets of inner arc drive rollers, 1 set of outer arc drive rollers, and 2 sets of free rollers. This compact straightening machine with a multi-roll close-packed and multi-drive mode can achieve maximum structural optimization. In this way, the compact structure of fewer frames, multiple rolls, and multiple drives not only meets the power requirements for billet pulling and ingot feeding, but the close-packed multi-rolls can also adapt to the straightening of slabs with liquid cores, effectively controlling the bulging deformation of the cast billet; thus solving problem 2) mentioned in the background art, that is, as the number of frames increases, the roller spacing in the straightening machine is relatively large, basically around 1.5 meters, resulting in a huge waste of metallurgical length, and sometimes it is necessary to adopt a larger basic radius of the casting machine or be forced to reduce the pulling speed.

[0048] The following is a brief introduction to the initial concept of the tension straightening machine of this utility model:

[0049] A compact tension leveling machine with multiple rollers and multiple drives.

[0050] This utility model relates to a compact straightening machine with multiple rollers and multiple drives, which can be matched with the casting and straightening production line equipment of a converter three-machine three-strand slab continuous casting machine. It belongs to the technical field of metallurgical machinery continuous casting and straightening equipment, with a compact layout and excellent economic performance.

[0051] Technical Introduction:

[0052] This utility model patent technology provides a multi-roll close-packed multi-drive straightening machine, which mainly consists of an upper frame, a lower frame, four sets of drive rolls, and eight sets of free rolls. The roll system composed of drive rolls and free rolls covers and coincides with the roll line curves of the straightening and horizontal sections of the 8.5-meter continuous casting machine roll system. Free rolls are arranged between adjacent drive rolls, and the roll spacing between adjacent rolls adopts a close-packed roll arrangement. The drive rolls and free rolls are arranged in the frame according to the roll line curves of the straightening and horizontal sections of the continuous casting machine roll system. The three driven inner arc rolls are lifting rolls, which can adjust a certain roll gap opening to meet the needs of billet drawing, maintenance, and ingot clamping. All outer arc rolls are fixed rolls, with the second set driven and used in pairs with one of the upper drive sets. This type of straightening machine structure enables the continuous casting machine to achieve multi-roll close-packed, multi-drive operation within a limited length. It avoids the large roll gap structure of multiple straightening machines, optimizes the complex structure of multiple sector sections, and fully utilizes the roll system length in the straightening and leveling stages. This effectively increases the continuous casting machine's capacity while ensuring that the billet bulge and overall strain are controlled within a reasonable range. When space is limited, it allows for a smaller basic radius for the casting machine.

[0053] In the continuous casting process of an arc-shaped continuous casting machine, due to the frictional resistance between the clamping rollers and the billet, and the significant reaction force during straightening, a drive system is needed to ensure the billet is smoothly pulled out of the sector. Generally, slab continuous casting machines use a distributed drive mode with multiple sector sections via motor reducers; billet continuous casting machines, due to fewer support rollers, typically use multiple straightening machines for centralized drive. Both modes have their advantages and disadvantages. The mode using multiple sector sections via motor reducers requires setting up transmission rollers within each sector section and using universal couplings to connect the motor reducers and transmission rollers. This results in a complex sector section structure, heavy equipment, the need to pull out guide rails for maintenance, a large footprint, and a large flow spacing, making it inconvenient for multi-strand continuous casting machines with more than two strands. The current method of using multiple pull straighteners in a centralized manner often results in significant waste of metallurgical length. Because the pull straighteners are subjected to large forces, each pull straightener frame must be made sufficiently large to maintain rigidity. This leads to relatively large roll gaps within the pull straighteners, typically around 1.5 meters, sometimes necessitating larger casting machine radii or reduced pulling speeds. However, this multi-roll, closely spaced, multi-drive configuration allows for maximum structural optimization, enabling both a tight arrangement of multi-strand continuous casting machines and full utilization of the metallurgical length.

[0054] Technical protection point: A compact tension leveling machine with multiple rollers closely arranged and multiple drives, which adopts a method of centrally setting several pairs of casting machine drive rollers in one

[0055] The reducer motor is located within the frame, at the end of the drive roller (side of the frame), saving space and reducing the flow gap. The drive roller and the free rollers between them form the roller system of this straightening machine. This roller system covers the straightening section and the horizontal section of the continuous casting machine's roller system. The roller spacing between adjacent rollers within this roller system adopts a close-packed roller method, meaning that the actual roller spacing between adjacent rollers should be less than the calculated roller spacing that can ensure the bulging control requirements of the cast billet, so that the effective metallurgical length of the casting machine can be calculated up to the exit roller of the straightening machine.

[0056] Technical Features Summary:

[0057] 1. The straightening machine adopts a method of centrally arranging several pairs of casting machine drive rollers within a set of frames, and setting a pair of free rollers between two adjacent pairs of drive rollers. The drive rollers and the free rollers between them constitute the roller system of this device. The roller system covers the straightening section and the horizontal section of the continuous casting machine roller system. The roller spacing between adjacent rollers in this roller system adopts a close-packed roller method, that is, the actual roller spacing between adjacent rollers should be less than the calculated roller spacing that can ensure the bulging control requirements of the billet, so that the effective metallurgical length of the casting machine can be calculated up to the exit roller of this device.

[0058] 2. The drive method of the transmission roller of the tension leveling machine is as follows: ① The upper roller, i.e. the inner arc roller, is the active drive roller, and the lower roller, i.e. the outer arc roller, is the free roller; ② The upper roller, i.e. the inner arc roller, is the drive roller, and the lower roller, i.e. the outer arc roller, is also the drive roller.

[0059] 3. The straightening machine mainly consists of a frame, several sets of casting machine drive rollers, and several sets of free rollers. The required number of drive rollers is determined by the driving capacity required for continuous casting. The reducer motor of the upper drive roller (inner arc drive roller) is installed at the end of the drive roller. The reducer has an anti-torsion block that can slide in the guide groove of the upper frame to adjust the opening degree. The reducer motor of the lower drive roller (outer arc drive roller) is installed at the end of the drive roller, and its anti-torsion bracket sits on the lower frame.

[0060] 4. The tension leveling machine consists of an upper frame and a lower frame. A water tank is installed inside the frame to provide cooling water to the rollers, bearings, hydraulic cylinders, motor, and reducer, and also to handle water return. The frame assembly is mounted on a base.

[0061] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A multi-roller close-packed multi-drive tension straightening machine, wherein the tension straightening machine is provided with drive rollers (9), and a drive motor (1) and a reducer are configured corresponding to the drive rollers (9); Its features are: The drive motor (1) and reducer are arranged within the footprint of the tension leveler; The tension leveling machine has 3 sets of inner arc drive rollers, 1 set of outer arc drive rollers, and 2 sets of free rollers. The tension leveling machine is a multi-roller densely arranged multi-drive structure.

2. The multi-roller close-packed multi-drive tension leveling machine according to claim 1, characterized in that: The drive motor (1) is in a vertical position.

3. The multi-roller close-packed multi-drive tension leveling machine according to claim 1, characterized in that: The drive motor (1) and reducer are cooled by cooling water.

4. The multi-roller close-packed multi-drive tension leveling machine according to claim 1, characterized in that: The drive motor (1) and reducer are located on one side of the tension leveling machine frame.

5. A multi-roll close-packed multi-drive tension leveling machine, the tension leveling machine comprising an upper frame (2) and a lower frame (6); Its features are: The tension straightening machine is equipped with three inner arc drive rollers mounted on the upper frame (2) and one outer arc drive roller mounted on the lower frame (6). The tension leveling machine includes three inner arc roller drive motors (11) and one outer arc roller drive motor (12). The three inner arc roller drive motors (11) are set on the side of the upper frame (2). The inner arc roller drive motors (11) are installed on the upper frame (2). The drive output end of the inner arc roller drive motors (11) faces downward. The three inner arc roller drive motors (11) correspond to the three inner arc transmission rollers respectively. For each paired inner arc roller drive motor (11) and inner arc transmission roller, a reducer is provided. The drive output end of the inner arc roller drive motor (11) is connected to the drive input end of the inner arc transmission roller through the reducer. The outer arc roller drive motor (12) is set between the upper frame (2) and the lower frame (6). The outer arc roller drive motor (12) is mounted on the lower frame (6). The drive output end of the outer arc roller drive motor (12) faces downward and corresponds to the outer arc transmission roller. A reducer is provided for the outer arc roller drive motor (12) and the outer arc transmission roller. The drive output end of the outer arc roller drive motor (12) is connected to the drive input end of the outer arc transmission roller through the reducer. The inner arc roller drive motor (11) and the outer arc roller drive motor (12) and their configured reducers are located within the footprint of the tension leveling machine.

6. The multi-roller close-packed multi-drive tension leveling machine according to claim 5, characterized in that: The tension leveling machine has a multi-roller, closely spaced, multi-drive structure.

7. The multi-roller close-packed multi-drive tension leveling machine according to claim 5, characterized in that: The inner arc roller drive motor (11) and the outer arc roller drive motor (12) are in a vertical position.

8. The multi-roller close-packed multi-drive tension leveling machine according to claim 5, characterized in that: The inner arc roller drive motor (11) and the outer arc roller drive motor (12) and their respective reducers are cooled by cooling water.

9. The multi-roller close-packed multi-drive tension leveling machine according to claim 5, characterized in that: The inner arc roller drive motor (11) and the outer arc roller drive motor (12) and their respective reducers are located on one side of the tension straightening machine frame.

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