A billet scale verification system and method

Abstract

The application discloses a billet scale calibration system and method. The system comprises a weighing device and a fixed-weight billet storage rack arranged on the weighing device. The weighing device comprises a frame and a plurality of weighing modules arranged below the frame. A plurality of roller tables are arranged on the frame at intervals. The frame is composed of a first weighing frame and a second weighing frame with the same length. The first weighing frame and the second weighing frame are overlapped at the end gaps. The billet scale calibration system is simple, compact, easy to process, transport and install, and has small routine maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to a billet scale calibration system and method. BACKGROUND

[0002] In the field of metallurgical equipment technology, billet weighing is one of the common devices before the steel heating furnace, mainly used for weighing and counting the billets into the furnace, so as to count the yield of rolling line. However, the precision of the weighing module will deviate after being used for a period of time, and needs to be calibrated in time.

[0003] The current calibration method mainly uses artificial calibration billets to be lifted to the weighing device by the crane, and then lifted away by the crane after the weighing module is calibrated, which takes about 10 minutes to complete the whole process. The weighing module needs to be calibrated regularly, and this calibration method not only increases the labor intensity of workers, but also has low work efficiency, which greatly affects the billet charging operation rate and rolling line output. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a billet scale calibration system and method.

[0005] To achieve the above purpose, the billet scale calibration system of the present application comprises at least a weighing device and a fixed weight billet storage rack arranged on the weighing device; wherein the weighing device comprises a frame and a plurality of weighing modules arranged below the frame; a plurality of roller beds are arranged at intervals on the frame; wherein the frame is composed of a first weighing frame and a second weighing frame with the same length; the first weighing frame and the second weighing frame are gap-lapped at the end portions.

[0006] Further, a limiting device is arranged at the bottom of the frame at both ends; the limiting device comprises a second limiting support arranged below the frame and one or more first limiting supports corresponding to the second limiting support on the foundation; the first limiting support and the second limiting support are arranged at intervals.

[0007] Further, the second limiting support comprises a second support seat arranged below the frame, and a limiting block is arranged below the support seat;

[0008] The first limiting support comprises a first support seat arranged on the foundation; a limiting nut is arranged on the first support seat; a limiting bolt is screwed in the limiting nut, and the limiting end of the bolt is arranged at an interval from the limiting block.

[0009] Further, the interval distance between the limiting end of the bolt and the limiting block is 0.5-2mm.

[0010] Further, the lower surface of the adjacent end of the first limiting support and the second limiting support is provided with a support; the two supports are connected through a connecting plate.

[0011] Further, the roller table is symmetrically arranged on the first weighing frame and the second weighing frame.

[0012] Further, the fixed weight billet storage rack comprises a support, a cross beam, a lifting cylinder, a connecting head, a pin shaft and a storage frame; the cross beam is fixedly connected with the support through bolts, the lifting cylinder is fixed on the top of the cross beam through bolts, the connecting head is threadedly connected with the piston rod of the lifting cylinder, and the storage frame is connected with the connecting head through the pin shaft.

[0013] Further, a latch cylinder is fixed on the side surface of the cross beam through bolts, and a latch hole is arranged on the piston rod of the latch cylinder corresponding to the storage frame.

[0014] To achieve the above purpose, the billet scale calibration method of the present application is realized by the system, and the method comprises the following steps:

[0015] After the PLC system identifies the calibration of the weighing module, the piston rod of the latch cylinder is retracted, the storage frame of the fixed weight billet storage rack moves to the low position, and the calibration billet is placed on the roller table of the weighing device;

[0016] The weighing module 103 is automatically calibrated;

[0017] After the calibration is completed, the storage frame of the fixed weight billet storage rack lifts the calibration billet to the high position, and the piston rod of the latch cylinder is extended;

[0018] The weighing device is restored for use, and the billet entering the furnace is weighed.

[0019] Further, the method further comprises a method of loading calibration billets, comprising:

[0020] The piston rod of the latch cylinder is retracted, and the storage frame of the fixed weight billet storage rack moves to the lowest position;

[0021] The transport roller table transports the calibration billet to the weighing device area;

[0022] After the metal detector detects the billet, the transport roller table starts to slow down and measures the distance through the encoder;

[0023] The transport roller table 4 continues to transport a distance L = L5 + L6 and stops moving;

[0024] The storage frame 206 of the fixed weight billet storage rack lifts the calibration billet to the high position, and the piston rod of the latch cylinder 208 is extended.

[0025] Compared with the prior art, the technical scheme provided by the present application has the following remarkable effects:

[0026] (1) The billet scale detection system has simple, compact equipment structure, and is convenient to process, transport and install, and has small routine maintenance amount.

[0027] (2) The lifting cylinder and the latch cylinder of the present application are both provided with displacement sensors, and the whole detection process is unmanned and efficient through the intelligent control system of the PLC, which improves the furnace loading rhythm and production efficiency and reduces the labor intensity of personnel. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the elevation view of the intelligent detection system and device of the billet scale of the present application;

[0029] Figure 2 is Figure 1 the K view of the storage frame in the high position;

[0030] Figure 3 is Figure 1 the K view of the storage frame in the low position;

[0031] Figure 4 Figure 3 the I partial enlarged view;

[0032] Figure 5 is Figure 2 the A-A sectional view;

[0033] Figure 6 is Figure 3 the B-B sectional view;

[0034] Figure 7 is the storage frame schematic view;

[0035] Figure 8 the loading calibration billet flowchart of the billet scale detection system and device of the present application;

[0036] Figure 9 the billet scale detection flowchart of the billet scale detection system and device of the present application;

[0037] Figure 10 is the elevation view of the weighing device of the online intelligent accurate weighing system of the present application;

[0038] Figure 11 is Figure 10 the L view;

[0039] Figure 12 is the elevation view of the weighing module of the online intelligent accurate weighing system of the present application;

[0040] Figure 13 is Figure 10 is a schematic view of a cross section along A-A of the same;

[0041] Figure 14 is Figure 13 is a schematic view of a detail of I;

[0042] Figure 15 is Figure 10 is a schematic view of K;

[0043] Figure 16 is Figure 10 is a schematic view of a detail of the middle part of the same;

[0044] In the figure: 1, weighing device 2, fixed weight blank storage rack 3, metal detector 4, transport roller 101, first weighing frame 102 second weighing frame 103, weighing module 104, roller 105, limiting support (one) 106, limiting support (two) 107, support 108, upper positioning plate 109, lower positioning plate 110, connecting plate 111, pin shaft 112, adjusting screw 113, nut (one) 114, nut (two) 115, pressure head 201, support 202, cross beam 203, lifting cylinder 204, connecting head 205, pin shaft 206, storage frame 207, first shaft sleeve 208, latch cylinder 209, second shaft sleeve 210, limiting plate DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described in detail below with reference to the drawings.

[0046] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0047] The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0048] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] The billet scale detection system of the present application comprises at least a weighing device and a constant weight billet storage rack arranged on the weighing device; wherein the weighing device comprises a frame and a plurality of weighing modules arranged below the frame; a plurality of roller beds are arranged at intervals on the frame; wherein the frame is composed of a first weighing frame and a second weighing frame with the same length; the first weighing frame and the second weighing frame are gap-lapped at the end portions. As shown in the figure, a 10mm gap H is left between the two end faces of the first weighing frame and the second weighing frame, which can make the first weighing frame and the second weighing frame have a certain deformation along the center line M direction.

[0050] Example 1

[0051] In combination Figure 10 , Figure 11 , Figure 13 , Figure 16 , the weighing device of the present embodiment comprises a weighing device 1, a metal detector 2, and a conveying roller bed 3. The conveying roller bed 3 is arranged at the entrance of the billet conveying direction, and the metal detector 2 is arranged between the conveying roller bed 3 and the weighing device 1.

[0052] The weighing device 1 comprises a first weighing frame 101, a second weighing frame 102, a weighing module 103, a roller bed 104, a limiting support (one) 105, a limiting support (two) 106, and a support 107. The roller bed 104 and the support 107 are fixed on the bottom surface of the first weighing frame 101 and the second weighing frame 102 by bolts. The pressure head 115 of the weighing module 103 is installed in the pin hole of the bottom surface of the first weighing frame 101 and the second weighing frame 102. The limiting support (one) 105 is fixed to the ground by anchor bolts, and the limiting support (two) 106 is fixed to the bottom surface of the first weighing frame 101 and the second weighing frame 102 by welding.

[0053] Further, a 10mm gap H is left between the two end faces of the first weighing frame and the second weighing frame, which can make the first weighing frame and the second weighing frame have a certain deformation along the center line M direction.

[0054] Example 2

[0055] In combination Figure 11、 Figure 12 The weighing device of the embodiment is basically the same as that of Embodiment 1, and the difference and improvement are that the first weighing frame 101 and the second weighing frame 102 are symmetrically arranged along the center line M, and are connected by overlapping, and the upper and lower end faces are left with a gap of 10 mm.

[0056] The roller way 104 is symmetrically arranged on the first weighing frame 101 and the second weighing frame 102. The weighing module 103 is symmetrically arranged along the center line M, and at least 6 are provided. The weighing module 103 is symmetrically arranged along the center line N.

[0057] Embodiment 3

[0058] In combination Figure 12 、 Figure 13 、 Figure 14 The structure of the embodiment is basically the same as that of Embodiment 1, and the difference and improvement are that the first weighing frame 101 is welded with an upper positioning plate 108 on the bottom surface, the second weighing frame 102 is welded with a lower positioning plate 109 on the top surface, and the upper positioning plate 108 and the lower positioning plate 109 are symmetrically arranged along the center line M. The inner side top surface A of the upper positioning plate 108 and the lower positioning plate 109 plays a bearing role, the side surface B extends in the direction of the roller axis to play a positioning role, and the outer side top surface C is left with a gap of 2 mm. The first weighing frame 101 and the second weighing frame 102 are connected by bolts 109, and considering the deformation factor, the connecting hole of the first weighing frame 101 is a waist-shaped hole.

[0059] The connecting plate 110 is arranged between the supports 107, the connecting plate 110 is provided with pin holes at both ends, and the pin holes are connected with the supports 107 through pin shafts 111. The supports 107 are symmetrically arranged along the center line M, and a total of 4 are provided.

[0060] Embodiment 4

[0061] In combination Figure 11 、 Figure 16 The weighing device of the embodiment is basically the same as that of Embodiment 1, and the difference and improvement are that the limiting support (two) 106 is symmetrically arranged along the center line N, and is arranged at the center line M. The limiting support (one) 105 is arranged at the left side, the right side and the inner side of the limiting support (two) 106, respectively.

[0062] The limiting support (one) 105 is provided with an adjusting screw 112. Considering the deformation factor of the first weighing frame 101 and the second weighing frame 102, the adjusting screw 112 is provided with a limiting block on the limiting support (two) 106 with a gap of 1 mm.

[0063] The limiting support (one) 105 is provided with a nut (one) 113 and a nut (two) 114, the nut (two) 114 is welded on the limiting support (one) 105, and the nut (one) 113 is movable and adjustable.

[0064] Embodiment 5

[0065] In combination Figure 1 , Figure 2 , Figure 5 The steel billet scale detection system and device of the embodiment comprises a weighing device 1, a fixed weight billet storage rack 2, a metal detector 3, and a conveying roller 4. The conveying roller 4 is arranged at the entrance of the steel billet conveying direction, and the metal detector 3 is arranged between the conveying roller 4 and the weighing device 1. The fixed weight billet storage rack 2 is evenly arranged in the area of the weighing device 1.

[0066] The weighing device 1 comprises a first weighing frame 101, a second weighing frame 102, a weighing module 103, a roller 104, a limiting support (one) 105, a limiting support (two) 106, and a support 107. The roller 104 and the support 107 are fixed on the bottom surface of the first weighing frame 101 and the second weighing frame 102 by bolts. The limiting support (one) 105 is fixed to the ground by foundation bolts, and the limiting support (two) 106 is fixed to the bottom surface of the first weighing frame 101 and the second weighing frame 102 by welding.

[0067] The fixed weight billet storage rack 2 comprises a support 201, a cross beam 202, a lifting cylinder 203, a connecting head 204, a pin shaft 205, a storage frame 206, a first shaft sleeve 207, a latch cylinder 208, a second shaft sleeve 209, and a limiting plate 210. The cross beam 202 is fixedly connected to the support 201 by bolts, the lifting cylinder 203 is fixed on the top of the cross beam 202 by bolts, the connecting head 204 is threadedly connected to the piston rod of the lifting cylinder 203, and the storage frame 206 is connected to the connecting head 204 through the pin shaft 205. The latch cylinder 208 is fixed on the side surface of the cross beam 202 by bolts.

[0068] Embodiment 6

[0069] In combination Figure 2 , Figure 3 , Figure 4The steel billet scale calibration system and device of the embodiment, the structure of which is basically the same as that of embodiment 1, the difference and improvement of which are that the roller table 104 is provided with a wheel rim or a side baffle on both sides. When the storage rack 206 is in the low position, in order to avoid impact during the calibration steel billet transportation process, the A contour line of the storage rack 206 is located outside the B contour line of the wheel rim or the side baffle on both sides of the roller table 104. When the storage rack 206 is in the low position, in order to completely separate from the calibration steel billet, considering the deformation of the calibration steel billet, the distance between the inner side D of the lower bottom surface of the storage rack 206 and the upper surface C of the roller table 104 is not less than 50 mm. When the storage rack 206 is in the high position, in order to prevent impact with the charging steel billet, the distance between the outer side E of the lower bottom surface of the storage rack 206 and the upper surface C of the roller table 104 is not less than 2 times the height of the steel billet.

[0070] Embodiment 7

[0071] In combination Figure 5 , Figure 6 , Figure 7 The steel billet scale calibration system and device of the embodiment, the structure of which is basically the same as that of embodiment 1, the difference and improvement of which are that the limiting plates 210 arranged on the cross beam 202 are symmetrically arranged, the distance is L1 mm, the width of the storage frame 206 is L2 mm, and the difference between L1 and L2 is not less than 10 mm. The pin cylinder 208 is a water-cooled cylinder, which is horizontally installed and provided with a displacement sensor. The first shaft sleeve 207 and the second shaft sleeve 209 are arranged in the hole matched with the piston rod of the pin cylinder 208. The outer surface of the first shaft sleeve 207 and the second shaft sleeve 209 is in interference fit with the hole of the cross beam 202. After the piston rod of the pin cylinder 208 is fully extended, the length L3 is greater than L4. The difference between the diameter D2 of the lower hole of the storage frame 206 and the diameter D1 of the piston rod of the pin cylinder 208 is not less than 10 mm. The lifting cylinder 203 is provided with a displacement sensor. The transportation roller table 4 is provided with an encoder.

[0072] Embodiment 8

[0073] In combination Figure 8 , Figure 9 The calibration method, the implementation steps of which are as follows:

[0074] I. Load the calibration steel billet

[0075] First step: the piston rod of the pin cylinder 208 is retracted, and the storage frame 206 of the constant weight billet storage rack 2 is moved to the lowest position;

[0076] Second step: the transportation roller table 4 transports the calibration steel billet to the area of the weighing device 1;

[0077] Third step: the metal detector 2 detects the steel billet, the roller table 4 starts to slow down, and the distance is measured through the encoder;

[0078] Fourth step: after the transport roller 4 continues to transport a distance L = L5 + L6, stop moving;

[0079] Fifth step: the storage frame 206 of the fixed weight billet storage rack 2 is lifted to move the calibration steel billet to a high position, and the piston rod of the latch cylinder 208 is extended.

[0080] II. Steel billet weighing calibration

[0081] First step: after the PLC system identifies that the weighing module 103 needs to be calibrated, the piston rod of the latch cylinder 208 is retracted, the storage frame 206 of the fixed weight billet storage rack 2 is moved to a low position, and the calibration steel billet is placed on the roller 104 of the weighing device 1.

[0082] Second step: the system automatically calibrates the weighing module 103.

[0083] Third step: after calibration is completed, the storage frame 206 of the fixed weight billet storage rack 2 is lifted to move the calibration steel billet to a high position, and the piston rod of the latch cylinder 208 is extended.

[0084] Fourth step: the weighing device 1 resumes use to weigh the steel billet entering the furnace.

[0085] The above describes the present application in detail in combination with the drawings, but the present application is not limited to the above-mentioned embodiments, and within the knowledge range of those skilled in the art, various changes can be made without departing from the purpose of the present application. Many other changes and modifications can be made to the concept and scope of the present application, which should be considered as the protection scope of the present application.

[0086] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0087] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A billet scale calibration system, characterized in that, The system includes at least a weighing device and a fixed-weight billet storage rack mounted on the weighing device; wherein the weighing device includes a frame and multiple weighing modules mounted below the frame; multiple roller conveyors are spaced apart on the frame; wherein the frame is composed of a first weighing frame and a second weighing frame of the same length; the ends of the first weighing frame and the second weighing frame are overlapped with a gap. The fixed-weight blank storage rack includes a support, a crossbeam, a lifting cylinder, a connector, a pin, and a storage frame; the crossbeam is fixedly connected to the support by bolts, the lifting cylinder is fixed to the top of the crossbeam by bolts, the connector is threadedly connected to the piston rod of the lifting cylinder, and the storage frame is connected to the connector by the pin. A pin cylinder is fixed to the side of the crossbeam by bolts, and a pin hole is provided on the storage frame corresponding to the piston rod of the pin cylinder. After the metal detector detects the steel billet, the conveyor rollers begin to slow down and the distance is measured by an encoder.

2. The billet scale calibration system as described in claim 1, characterized in that, Limiting devices are provided at the bottom of both ends of the frame; the limiting devices consist of a second limiting bracket provided below the frame and one or more first limiting brackets on the foundation corresponding to the second limiting bracket; the first limiting brackets and the second limiting brackets are provided at intervals.

3. The billet scale calibration system as described in claim 2, characterized in that, The second limiting bracket includes a second bracket seat disposed below the frame, and a limiting block is disposed below the bracket seat; The first limiting bracket includes a first bracket seat set on the foundation; a limiting nut is set on the first bracket seat; a limiting bolt is screwed into the limiting nut, and the limiting end of the bolt is spaced apart from the limiting block.

4. The billet scale calibration system as described in claim 3, characterized in that, The distance between the limiting end of the bolt and the limiting block is 0.5-2 mm.

5. The billet scale calibration system as described in claim 2, characterized in that, The lower surfaces of the first and second limiting brackets at adjacent ends are each provided with a support; the two supports are connected by a connecting plate.

6. The billet scale calibration system as described in claim 2, characterized in that, The roller conveyors are arranged symmetrically and crosswise on the first weighing frame and the second weighing frame.

7. A method for calibrating a billet scale, wherein the method is implemented based on the system described in claim 1, characterized in that, The method includes the following steps: After the PLC system identifies and calibrates the weighing module, the piston rod of the pin cylinder retracts, the storage frame of the fixed-weight billet storage rack moves to the low position, and the calibrated steel billet is placed on the roller conveyor of the weighing device. The weighing module is automatically calibrated. After the calibration is completed, the storage frame of the fixed-weight billet storage rack lifts the calibrated steel billet to a high position, and the piston rod of the pin cylinder extends. The weighing device was put back into use to weigh the steel billets entering the furnace.

8. The billet scale calibration method as described in claim 7, characterized in that, The method also includes a method for loading a calibrated steel billet, comprising: The piston rod of the pin cylinder retracts, and the storage frame of the fixed-weight blank storage rack moves to its lowest position; The conveyor rollers will transport the marked steel billets to the weighing device area; After the metal detector detects the steel billet, the conveyor rollers begin to slow down and the distance is measured by the encoder. The transport roller conveyor continues to transport goods for a certain distance before stopping. The storage frame of the fixed-weight billet storage rack is lifted to the high position to calibrate the steel billet, and the piston rod of the pin cylinder extends.

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