A cooling bed skirt control mechanism and production control method thereof

Abstract

The present invention discloses a cooling bed skirt control mechanism and a production control method thereof, and relates to the technical field of cooling beds. The mechanism comprises: a skirt body, wherein the skirt body extends in a first direction, and the side wall of the skirt body is rotatably connected to a plurality of guide side wheels for guiding the side surfaces of the steel, and the axis of the guide side wheels extends in a second direction, wherein the first direction is parallel to the conveying direction of the steel, and the second direction is perpendicular to the first direction. The present invention controls the periodic lifting height of the skirt body so that the wear of the guide side wheels is more uniform, and thus, during long-term use, the guide side wheels will not produce deep grooves, and thus, when different types of steel are replaced, it is not easy to scratch the surface of the steel. By adopting this method, the service life of the guide side wheels is increased from 3 months to 9 months, and there is no need to manually sharpen the guide side wheels, thereby reducing labor intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling beds, in particular to a cooling bed skirt control mechanism and a production control method thereof. Background Art

[0002] During the rolling process of round (flat) steel, the skirt plate needs to perform periodic movements to move the steel onto the static tooth surface of the cooling bed. During the transportation of the steel on the conveyor roller, its bottom surface contacts the roller surface, and its side surface will still contact the guide side wheels on the skirt plate. When the same specification of steel is produced for a long time, the quality of the product scratches is basically stable. Once the production specification is changed (especially when small-diameter steel is replaced with large-diameter steel), the scratch problem will be very prominent, and products with side scratching problems will easily lead to the scrapping of steel. In order to solve this kind of hidden dangers, the common solution is to shorten the replacement cycle of the guide side wheels or regularly grind the surface of the guide side wheels to make the wear of the guide side wheels even. However, the following problems still exist:

[0003] 1. The replacement cycle of the guide side wheels cannot be guaranteed: Due to the different lengths of steel produced, the degree of wear of the guide side wheels is different. The guide side wheels with large wear are located in front of the conveyor roller. If the guide side wheels with small wear are not replaced, scratches will still occur, making replacement more difficult and costly.

[0004] 2. There are many product specifications. If grinding is used, the guide side wheels need to be frequently ground, which increases the labor intensity of employees. Summary of the Invention

[0005] The object of the present invention is to provide a cooling bed skirt control mechanism and a production control method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cooling bed skirt control mechanism, comprising: a skirt body, the skirt body extending along a first direction, and the side walls of the skirt body are rotatably connected to a plurality of guide side wheels for guiding the side surfaces of the steel, the axis of the guide side wheels extending along a second direction, the first direction being parallel to the conveying direction of the steel, and the second direction being perpendicular to the first direction; a plurality of eccentric wheel assemblies, the plurality of eccentric wheel assemblies being arranged along the first direction, each of the eccentric wheel assemblies being able to rotate freely, and when the plurality of eccentric wheel assemblies rotate synchronously, the skirt body is driven to reciprocate along the second direction; a drive assembly for driving the plurality of eccentric wheel assemblies to rotate synchronously; and a control assembly for controlling the drive assembly.

[0007] Preferably in the present technical solution, the eccentric wheel assembly includes: a rotating shaft, the rotating shaft is rotatably connected to the cooling bed, and the axis of the rotating shaft extends along a third direction, and the third direction is perpendicular to the first direction and the second direction respectively; an eccentric wheel, the eccentric wheel is arranged on the rotating shaft, the axis of the eccentric wheel and the rotating shaft are parallel, and there is a distance between them; a limiting groove is arranged inside the skirt body, the opening of the limiting groove faces the eccentric wheel, and the eccentric wheel partially falls into the limiting groove.

[0008] Preferably in the present technical solution, the driving assembly includes: a driven synchronous wheel corresponding to the driving assembly one by one, the driven synchronous wheel is arranged on the rotating shaft, and the axis of the driven synchronous wheel and the rotating shaft coincide with each other; a driving device, the output end of the driving device is provided with an active synchronous wheel; a synchronous belt, which is used to form a transmission connection between the active synchronous wheel and the multiple driven synchronous wheels.

[0009] Preferably in the present technical solution, a synchronization component is further provided between adjacent drive components, and the synchronization component is used to ensure that adjacent drive components rotate synchronously.

[0010] Preferably in the present technical solution, the synchronization component includes: a connecting shaft, which is fixed on the eccentric wheel and is parallel to the axis of the eccentric wheel; a synchronization link, which is used to connect two adjacent connecting shafts, and the two ends of the synchronization link respectively form a rotational connection with the two connecting shafts.

[0011] Preferably in this technical solution, the control component is a programmable logic controller.

[0012] Based on the above-mentioned cooling bed skirt control mechanism, the present invention also proposes a production control method for cooling bed skirts, wherein the production of n groups of steel is a control cycle. In each control cycle, from the production of the first group of steel to the nth group of steel, the initial height of the skirt body in the vertical direction decreases or increases successively each time, and the amplitude of the decrease or increase is y. The initial height of the skirt body is the height of the skirt body in the vertical direction when the skirt body is in the conveying state.

[0013] Preferably in the present technical solution, for the first group of steels within the production control cycle, when the skirt plate body is in the conveying state, the bottom surface of the guide side wheel is flush with the roller surface of the conveying roller; the initial height of the skirt plate body decreases successively within the control cycle, and the decreasing amplitude is: y=l / n, wherein: y is the decreasing amplitude, unit: mm; l is the length of the guide side wheel along its axial direction, unit: mm; n is a positive integer.

[0014] Preferably in this technical solution, n=4.

[0015] Preferably in the present technical solution, the number of steel bars in each group of steel bars is 1 to 20.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The production control method of the cooling bed skirt plate makes the wear of the guide side wheels more uniform by periodically controlling the lifting height of the skirt plate body. Therefore, during long-term use, the guide side wheels will not produce deep grooves. Furthermore, when different types of steel are replaced, it is not easy to scratch the surface of the steel. This method increases the service life of the guide side wheels from 3 months to 9 months, and eliminates the need for manual grinding of the guide side wheels, thereby reducing labor intensity.

[0018] The cooling bed skirt control mechanism can enable the skirt body with a longer length to move synchronously as a whole, which is more conducive to uniform wear of the guide side wheels on the skirt body, and will not cause deep wear grooves on the guide side wheels due to inconsistent movement of the skirt body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the structural diagram of the cooling bed;

[0020] Figure 2 It is a schematic diagram of the position of the skirt plate structure in the conveying state;

[0021] Figure 3 A schematic diagram of the position of the skirt structure in the guiding state;

[0022] Figure 4 This is a schematic diagram of the coordination between the skirt structure and the lifting structure;

[0023] Figure 5 This is the main view of the coordination between the skirt structure and the lifting structure;

[0024] Figure 6 This is the left view of the coordination between the skirt structure and the lifting structure.

[0025] In the figure: 1. Cooling bed; 2. Conveyor roller; 3. Skirt structure; 301. Skirt body; 302. Guide side wheel; 303. Limiting groove; 4. Lifting structure; 401. Driven synchronous wheel; 402. Rotating shaft; 403. Eccentric wheel; 404. Driving device; 405. Active synchronous wheel; 406. Synchronous belt; 407. Connecting shaft; 408. Synchronous connecting rod; 5. Round steel. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to 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.

[0028] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0029] It should be noted that like numbers and letters represent similar items in the following figures, so once an item is defined or described in one figure, it will not need to be further discussed and described in detail in the description of the subsequent figures.

[0030] Before understanding the present invention, it is necessary to combine Figures 1 to 3 Clearly understand the prior art of the present invention, wherein the skirt structure 3 is arranged between the conveying roller 2 and the cooling bed 1, and a lifting structure 4 is also provided at the bottom of the skirt structure 3. The lifting structure 4 can move freely with the skirt structure 3 along the second direction (that is, the vertical direction in this embodiment), and the skirt structure 3 has two working states, namely, a conveying state and a guiding state.

[0031] like Figure 2 As shown, when the skirt structure 3 is in the conveying state, it can cooperate with the conveyor roller 2 to convey the round steel 5. Specifically, in the production of the round steel 5, the round steel 5 produced is conveyed by the conveyor roller 2. During the conveying process, the bottom of the round steel 5 contacts the conveyor roller on the conveyor roller 2, and its side contacts the guide side wheel 302 on the skirt structure 3. When the round steel 5 is conveyed to the cooling bed 1, the lifting structure 4 brings the skirt structure 3 down to the position shown in FIG. Figure 3As shown, at this time, the skirt plate structure 3 is in the guiding state, and the round steel 5 can be rolled from the conveying roller 2 to the top inclined surface of the skirt plate structure 3 onto the cooling bed 1, and the cooling bed 1 can move the round steel 5 step by step on its trapezoidal static tooth surface (existing technology, not repeated here). After the round steel 5 is moved onto the cooling bed 1, the skirt plate structure 3 rises again under the drive of the lifting structure 4, and switches from the guiding state to the conveying state to convey the next round steel 5. Since the skirt plate structure 3, the conveying roller 2 and the cooling bed 1 are all very mature existing technologies, the present invention does not show their structures in detail. Figures 1 to 3 The skirt structure 3, conveyor roller 2 and cooling bed 1 are schematic diagrams.

[0032] As can be seen from the above, during the conveying process of each round steel 5, the skirt structure 3 needs to complete a descending and ascending action. During long-term use, the skirt structure 3 contacts the round steel 5 when in the conveying state, causing deeper grooves to be generated on the guide side wheels 302. When the specifications of the round steel 5 are changed, the deeper grooves are easy to scratch the current products.

[0033] Therefore, the present invention proposes a production control method for cooling bed skirt plates. The control method takes the production of n groups of steel as a control cycle, wherein each group of steel plates contains 1 to 20 steel plates, which can be any number of 1, 2, 3, 4, 5, 10, 15 and 20 steel plates. In each control cycle, from the production of the first group of steel plates to the nth group of steel plates, the initial height of the skirt plate body 301 in the vertical direction decreases or increases successively each time, and the amplitude of the decrease or increase is y. The initial height of the skirt plate body 301 is the height along the second direction (i.e., the vertical direction) when the skirt plate body 301 is in the conveying state. The method of the present invention makes the guide side wheel 302 wear more evenly, so that there is no groove or the groove depth is small on the guide side wheel 302. The groove with a small depth is not easy to cause damage to the round steel 5.

[0034] Specifically, in this embodiment, four groups of steel materials constitute one production control cycle, wherein each group contains one steel material. Within the control cycle, the initial height of the skirt plate body 301 decreases in sequence, and the decreasing amplitude is: y = l / n, where: y is the decreasing amplitude, unit: mm; l is the axial length of the guide side wheel 302, unit: mm; n is a positive integer, where l is 76 mm, n = 4, and the decreasing amplitude y = 19 mm each time. In one production control cycle, the skirt plate body 301 is controlled as follows:

[0035] S1: The first group of steel products (i.e., the first steel product) in the production control cycle. First, when the skirt plate body 301 is in the conveying state, the bottom surface of the guide side wheel 302 is flush with the roller surface of the conveyor roller 2. At this time, the initial height of the skirt plate body 301 is defined as 185 mm. When the first steel product reaches the cooling bed 1, the lifting structure 4 switches the skirt plate body 301 from the conveying state to the guiding state. At this time, the height of the skirt plate body 301 is -10 mm.

[0036] S2: The second group of steel products (i.e., the second steel product) in the production control cycle, the lifting structure 4 switches the skirt plate body 301 from the guiding state to the conveying state. At this time, the initial height of the skirt plate body 301 is 185 mm - 19 mm = 166 mm. When the second steel product reaches the cooling bed 1, the lifting structure 4 switches the skirt plate body 301 from the conveying state to the guiding state. At this time, the height of the skirt plate body 301 is -10 mm.

[0037] S3: The third group of steel products (i.e., the third steel product) in the production control cycle, the lifting structure 4 switches the skirt plate body 301 from the guiding state to the conveying state. At this time, the initial height of the skirt plate body 301 is 166 mm - 19 mm = 147 mm. When the third steel product reaches the cooling bed 1, the lifting structure 4 switches the skirt plate body 301 from the conveying state to the guiding state. At this time, the height of the skirt plate body 301 is -10 mm.

[0038] S4: For the fourth group of steel products (i.e., the fourth steel product) within the production control cycle, the lifting structure 4 switches the skirt plate body 301 from the guiding state to the conveying state. At this time, the initial height of the skirt plate body 301 is 147 mm - 19 mm = 128 mm. When the fourth steel product reaches the cooling bed 1, the lifting structure 4 switches the skirt plate body 301 from the conveying state to the guiding state. At this time, the height of the skirt plate body 301 is -10 mm.

[0039] S5: re-entering the next production control cycle, the height of the skirt plate body 301 is restored to 185 mm.

[0040] By adopting this method, the service life of the guide side wheels 302 is increased from the original replacement time of 3 months to replacement time of 9 months, and there is no need to manually grind the guide side wheels 302.

[0041] Usually, multiple lifting cylinders are used as the lifting structure 4, but the synchronization of the multiple lifting cylinders is poor. At the same time, the length of the skirt body 301 is long (usually more than 30 meters). Therefore, if the above control method is used for periodic production, the rising amplitude of the skirt body 301 will have errors, which will still cause uneven wear of the guide side wheels 302. For this reason, based on the above control method, Figures 4 to 6As shown, the present invention provides a technical solution: a cooling bed skirt control mechanism, comprising: a skirt body 301, the skirt body 301 extends along a first direction, and the side wall of the skirt body 301 is rotatably connected to a plurality of guide side wheels 302 for guiding the side of the steel, the axis of the guide side wheel 302 extends along a second direction, the first direction is parallel to the conveying direction of the steel, and the second direction is perpendicular to the first direction; a plurality of eccentric wheel assemblies, the plurality of eccentric wheel assemblies are arranged along a first direction, the first direction is parallel to the extension direction of the skirt body 301, each eccentric wheel assembly can rotate freely, and when the plurality of eccentric wheel assemblies rotate synchronously, the skirt body 301 is driven to reciprocate along the second direction; a driving assembly for driving the plurality of eccentric wheel assemblies to rotate synchronously; a control assembly for controlling the driving assembly, through the plurality of synchronously rotating eccentric wheel assemblies, regardless of the length of the skirt body 301, it can ensure that the lifting amplitude of each part of the skirt body 301 is consistent.

[0042] Specifically, such as Figure 5 and Figure 6 As shown, the eccentric wheel assembly includes: a rotating shaft 402, the rotating shaft 402 is rotatably connected to the cooling bed 1, and the axis of the rotating shaft 402 extends along the third direction, and the third direction is perpendicular to the first direction and the second direction respectively; an eccentric wheel 403, the eccentric wheel (403) is arranged on the rotating shaft 402, the axis of the eccentric wheel 403 and the rotating shaft 402 are parallel, and there is a gap; a limiting groove 303 is arranged inside the skirt body 301, the opening of the limiting groove 303 faces the eccentric wheel 403, and the eccentric wheel 403 partially falls into the limiting groove 303, so when the rotating shaft 402 drives the eccentric wheel When 403 rotates, the eccentric wheel 403 can drive the skirt board body 301 to rise and fall, and the function of the limiting groove 303 is mainly to prevent the eccentric wheel 403 from leaving the running track. It should be understood that wear will occur between the eccentric wheel 403 and the limiting groove 303 during long-term use. Therefore, when making them, wear-resistant materials with a smaller friction coefficient can be selected, and when designing the eccentric wheel 403, the rotation angle of the eccentric wheel 403 is divided into -180° to 0° and 0° to 180°, and its shape can be designed so that the rotation angle and the lifting distance of the skirt board body 301 are directly proportional.

[0043] like Figures 4 to 6As shown, the driving assembly includes: a driven synchronous wheel 401 corresponding to the driving assembly one by one, the driven synchronous wheel 401 is arranged on the rotating shaft 402, and the axis center line of the driven synchronous wheel 401 and the rotating shaft 402 coincides; a driving device 404, the output end of the driving device 404 is provided with an active synchronous wheel 405; a synchronous belt 406, which is used to form a transmission connection between the active synchronous wheel 405 and multiple driven synchronous wheels 401, so that the driving device 404 can drive the driven synchronous wheel 401 to rotate through the active synchronous wheel 405 and the synchronous belt 406, and further the driven synchronous wheel 401 can drive the eccentric wheel 403 to rotate through the driven shaft 402. The active synchronous wheel 405, the synchronous belt 406 and the driven synchronous wheel 401 can enable the multiple eccentric wheels 403 to rotate synchronously. At the same time, in order to further improve the rotation consistency of the eccentric wheel 403, a synchronous assembly is also designed in another embodiment of the present invention. The synchronous assembly is used to ensure that adjacent driving assemblies rotate synchronously. Specifically, as shown in FIG. Figure 5 As shown, the synchronization component includes: a connecting shaft 407, which is fixed on the eccentric wheel 403, and the connecting shaft 407 is parallel to the axis of the eccentric wheel 403; a synchronization link 408, which is used to connect two adjacent connecting shafts 407, and the two ends of the synchronization link 408 are respectively connected to the two connecting shafts 407 to form a rotational connection. When the eccentric wheel 403 rotates, due to the limiting effect of the synchronization link 408, it can be fully guaranteed that the two adjacent eccentric wheels 403 can rotate synchronously. During design, multiple synchronization links 408 can also be made into an integrated structure, so that multiple synchronization links 408 form a long link.

[0044] In another embodiment of the present invention, the control component in the present invention is a programmable logic controller. The programmable logic controller used in the prior art can control the lifting amplitude of the skirt plate body 301 through the lifting cylinder. In the present invention, a programmable logic controller is also used to control the driving device 404, and the driving device 404 is a stepper motor. The stepper motor can accurately control its own rotation angle, which is more suitable in the present invention. In order to be able to accurately control the lifting amplitude of the skirt plate body 301, the transmission ratio of the active synchronous wheel 405 and the driven synchronous wheel 401 is designed to be 2:1 to 10:1 during the design. In this embodiment, 4:1 is selected, and the active synchronous wheel 405 rotates 4 circles and the driven synchronous wheel 401 rotates one circle.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A production control method for a cooling bed skirt, executed by a cooling bed skirt control mechanism, characterized in that: The cooling bed skirt control mechanism includes: A skirt plate body (301), the skirt plate body (301) extending in a first direction, and a plurality of guide side wheels (302) for guiding the side surfaces of the steel are rotatably connected to the side walls of the skirt plate body (301), the axis of the guide side wheels (302) extending in a second direction, the first direction being parallel to the conveying direction of the steel, and the second direction being perpendicular to the first direction; A plurality of eccentric wheel assemblies, wherein the plurality of eccentric wheel assemblies are arranged in a first direction, each of the eccentric wheel assemblies is capable of rotating freely, and when the plurality of eccentric wheel assemblies rotate synchronously, the skirt plate body (301) is driven to reciprocate in a second direction; A driving assembly, used for driving multiple eccentric wheel assemblies to rotate synchronously; A control component, used to control the drive component; The production control method comprises: The production of n groups of steel products is considered as a control cycle. In each control cycle, during the production of the first group of steel products to the nth group of steel products, the initial height of the skirt plate body (301) in the vertical direction decreases or increases in sequence each time, and the amplitude of the decrease or increase is y. The initial height of the skirt plate body (301) is the height of the skirt plate body (301) in the vertical direction when the skirt plate body (301) is in a conveying state.

2. The production control method of the cooling bed skirt according to claim 1, characterized in that: For the first group of steel materials within the production control cycle, when the skirt plate body (301) is in the conveying state, the bottom surface of the guide side wheel (302) is flush with the roller surface of the conveying roller (2); The initial height of the skirt plate body (301) decreases in sequence during the control period, and the decreasing amplitude is: y=l / n, wherein: y is the decreasing amplitude, unit: mm; l is the length of the guide side wheel (302) along its axial direction, unit: mm; n is a positive integer.

3. The production control method of the cooling bed skirt according to claim 2, characterized in that: n=4。 4. The production control method for cooling bed skirts according to any one of claims 1 to 2, characterized in that: In each group of steel bars, the number of steel bars ranges from 1 to 20.

5. The production control method of cooling bed skirt according to claim 1, characterized in that: The eccentric wheel assembly comprises: A rotating shaft (402), the rotating shaft (402) being rotationally connected to the cooling bed (1), and the axis of the rotating shaft (402) extending along a third direction, the third direction being perpendicular to the first direction and the second direction respectively; An eccentric wheel (403), the eccentric wheel (403) being arranged on the rotating shaft (402), the axis lines of the eccentric wheel (403) and the rotating shaft (402) being parallel and spaced apart; A limiting groove (303) is provided inside the skirt plate body (301), wherein the opening of the limiting groove (303) faces the eccentric wheel (403), and the eccentric wheel (403) partially falls into the limiting groove (303).

6. The production control method of the cooling bed skirt according to claim 5, characterized in that: The drive assembly includes: A driven synchronous wheel (401) corresponding one-to-one to the driving assembly, wherein the driven synchronous wheel (401) is arranged on the rotating shaft (402), and the axis center lines of the driven synchronous wheel (401) and the rotating shaft (402) coincide with each other; A driving device (404), wherein an output end of the driving device (404) is provided with an active synchronous wheel (405); The synchronous belt (406) is used to form a transmission connection between the driving synchronous wheel (405) and the plurality of driven synchronous wheels (401).

7. The production control method for cooling bed skirt according to claim 5 or 6, characterized in that: A synchronization component is further provided between adjacent drive components, and the synchronization component is used to ensure that adjacent drive components rotate synchronously.

8. The production control method of cooling bed skirt according to claim 7, characterized in that: The synchronization component includes: A connecting shaft (407), wherein the connecting shaft (407) is fixed on the eccentric wheel (403), and the connecting shaft (407) is parallel to the axis of the eccentric wheel (403); The synchronous connecting rod (408) is used to connect two adjacent connecting shafts (407), and both ends of the synchronous connecting rod (408) are respectively connected to the two connecting shafts (407) in a rotational manner.

9. The production control method for cooling bed skirts according to any one of claims 5 to 6, characterized in that: The control component is a programmable logic controller.

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