A high-precision weighing device for a continuous casting machine breakout roller table

Abstract

The utility model discloses a continuous casting machine out of the blank roller way high accuracy weighing device, include: stand, install the cover, it is fixed on the top of stand, a plurality of groups of weighing unit, it is inlayed in the top of stand, and the installation end of weighing unit is fixedly installed on the bottom surface of install cover, and the detection end of weighing unit is fixedly equipped with detection board, telescopic power mechanism, it is placed between install cover and detection board, the blank support cover, it is located the top of install cover, the telescopic end of telescopic power mechanism is fixedly connected on the bottom surface of blank support cover, through setting up multiple groups of symmetrical distribution's weighing unit, compared with the distribution mode of traditional single weighing unit, this layout can effectively average the local stress concentration caused by the bending or the placement deviation of the blank, ensure that the weight signal collected is the whole, balanced force value, thereby significantly reduced the partial load error, for realizing the high accuracy weighing of more than three ten thousandths provides the structural basis.

Description

Technical Field

[0001] This utility model relates to the field of high-precision weighing technology for steel billets in continuous casting machines of steel plants, specifically a high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine. Background Technology

[0002] In the continuous casting production process, the accurate weight of the continuously cast billet is a key data point for calculating material balance, evaluating process stability and product quality. Currently, it is common practice to set up a weighing device at the billet exit roller table to weigh the billet online.

[0003] Existing weighing devices typically employ a layout with a single lifting mechanism and a small number of weighing sensors. This design has inherent flaws: First, due to the limited number and simple distribution of sensors, they can usually only support local areas on both sides of the billet. When the billet is bent or slightly offset, it will cause uneven force distribution, and the signals collected by the weighing sensors cannot accurately reflect the overall weight of the billet, introducing significant errors. Secondly, the lifting mechanism's jacking point and the force transmission design of the entire support system are poor, which can easily cause swaying or uneven loading when lifting heavy billets, further amplifying the weighing error. These factors together make it difficult for the existing device to consistently achieve the high precision standard of three per thousand required for production, directly affecting subsequent production cost accounting and process optimization.

[0004] Therefore, we have made technical improvements to the existing continuous casting billet weighing equipment to meet production weighing requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine, which features simultaneous weighing by multiple sensors, high stability, and good accuracy.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution: a high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine, comprising: Columns; The mounting cover is fixed to the top of the column; Several sets of weighing units are embedded in the top of the column. The mounting end of the weighing unit is fixedly installed on the bottom surface of the mounting cover. The detection end of the weighing unit is fixedly provided with a detection plate, which is located in the middle of the column and below the mounting cover. A telescopic power mechanism is placed between the mounting cover and the detection plate. The mounting end of the telescopic power mechanism is fixed on the top surface of the detection plate, and the telescopic end of the telescopic power mechanism passes through the mounting cover and extends above the mounting cover. A billet support cover is located directly above the mounting cover. The telescopic end of the telescopic power mechanism is fixedly connected to the bottom surface of the billet support cover, and the top surface of the billet support cover forms a bearing surface for supporting the billet.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet discharge roller table of the continuous casting machine described above has a through hole in the middle of the mounting cover for the telescopic end of the telescopic power mechanism to extend out.

[0008] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet discharge roller table of the continuous casting machine described above, wherein several sets of weighing units are located around the telescopic power mechanism.

[0009] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet discharge roller of the continuous casting machine described above has two sets of weighing units, which are symmetrically distributed on both sides of the telescopic power mechanism. Each set of weighing units consists of three weighing units arranged at intervals.

[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet discharge roller table of the continuous casting machine described above, wherein the weighing unit is a pull rod type weighing sensor.

[0011] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet discharge roller of the continuous casting machine described above, wherein the bottom surface of the column is fixedly provided with a base, and the base is set horizontally.

[0012] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for billet discharge rollers of the continuous casting machine described above has several reinforcing ribs fixed between the base and the outer circumferential surface of the column.

[0013] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet conveyor of the continuous casting machine described above, wherein the telescopic power mechanism is a hydraulic cylinder.

[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the high-precision weighing device for the billet discharge roller conveyor of the continuous casting machine described above, wherein the top edge of the billet support cover is symmetrically and vertically fixed with a retaining edge, thereby limiting the position of the billet it carries.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are: (1) By setting up multiple symmetrically distributed weighing units, compared with the traditional single weighing unit distribution mode, this layout can effectively average the local stress concentration caused by billet bending or placement offset, ensuring that the collected weight signal is an overall and balanced force value, thereby significantly reducing the off-center load error and providing a structural basis for achieving high-precision weighing of more than three per thousand.

[0016] (2) An independent telescopic power mechanism is adopted and arranged in the center of the device, working in conjunction with the circumferentially symmetrical weighing unit. This layout of central lifting and surrounding force measurement makes the transmission path of the lifting force direct and symmetrical, greatly reducing the swaying and tilting of the billet support cover and the billet itself during the lifting process, reducing the dynamic error introduced by mechanical action from the source, and ensuring the stability of the weighing state.

[0017] (3) The weighing unit and telescopic power mechanism are integrated into a closed space formed by the column and the mounting cover. The structure is compact and effectively resists the harsh environmental influences such as dust, high temperature and water vapor at the roller conveyor site. The detection plate, as an intermediate force transmission component, connects the weighing units into one and bears the load together, further enhancing the overall rigidity of the structure and the consistency of measurement.

[0018] (4) The baffles set on the top edge of the billet support cover can effectively prevent the billet from slipping during the lifting and weighing process, ensuring operational safety; at the same time, the design of the base and reinforcing ribs ensures the foundation stability and long-term reliability of the entire weighing device when bearing heavy objects. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a schematic diagram of the left-side structure of this utility model.

[0020] Reference numerals in the attached drawings: 1. Column; 2. Weighing unit; 3. Telescopic power mechanism; 4. Base; 5. Reinforcing rib; 6. Mounting cover; 7. Detection plate; 8. Cast billet support cover; 9. Edge retainer. Detailed Implementation

[0021] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0022] Example 1, referring to Figure 1-4 A high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine, comprising: The column 1 is formed into a roughly cylindrical structure, and its top has a cavity to accommodate the weighing unit 2 and the telescopic power mechanism 3. The bottom surface of the column 1 is fixedly provided with a base 4, which is formed into a roughly square plate structure. The base 4 is horizontally set and can be fixed to the ground by rivets. Several reinforcing ribs 5 are fixed between the base 4 and the outer peripheral surface of the column 1. The reinforcing ribs 5 are formed into a roughly triangular shape. Mounting cover 6 is fixed to the top of column 1, and mounting cover 6 is formed into a circular cover structure; Several sets of weighing units 2 are embedded in the top of the column 1. The weighing unit 2 is a pull rod type weighing sensor. The pull rod type weighing sensor is existing technology. Its specifications and models can be selected according to the usage requirements. The upper pull rod is used to fix and connect to the bottom surface of the mounting cover 6. The lower pull rod is used to measure force and is fixedly connected to the detection plate described below. The mounting end of the weighing unit 2 is fixedly installed on the bottom surface of the mounting cover 6. The detection end of the weighing unit 2 is fixedly provided with a detection plate 7, which is formed into a roughly circular plate structure. The detection plate 7 is located in the middle of the column 1 and below the mounting cover 6. The telescopic power mechanism 3 is located between the mounting cover 6 and the detection plate 7. The telescopic power mechanism 3 is a hydraulic cylinder, and the number of cylinders can be one or two, depending on the usage requirements. Several sets of weighing units 2 are located around the telescopic power mechanism 3. There are two sets of weighing units 2, which are symmetrically distributed on both sides of the telescopic power mechanism 3. Each set of weighing units 2 consists of three weighing units 2 arranged at intervals. The mounting end of the telescopic power mechanism 3 is fixed on the top surface of the detection plate 7. The mounting cover 6 has a through hole in the middle for the telescopic end of the telescopic power mechanism 3 to extend out. The through hole can be a round hole. The telescopic end of the telescopic power mechanism 3 passes through the mounting cover 6 and extends to the top of the mounting cover 6. The shape and specifications of the billet support cover 8 can be selected according to the usage requirements, such as a square plate structure. It is located directly above the mounting cover 6. The telescopic end of the telescopic power mechanism 3 is fixedly connected to the bottom surface of the billet support cover 8. The top surface of the billet support cover 8 forms a bearing surface for bearing the billet. The top edge of the billet support cover 8 is symmetrically and vertically fixed with a retaining edge 9. The retaining edge 9 can be a square plate structure, which limits the bearing billet and prevents the billet from slipping outside the billet support cover 8 to the greatest extent.

[0023] The high-precision weighing device for the billet discharge roller conveyor in Example 1 is used as follows: (1) During non-weighing periods, the telescopic power mechanism 3, i.e. the oil cylinder, is in a retracted state, driving the billet support cover 8 to descend to a level lower than the surface of the billet discharge roller. At this time, the continuous casting billet can be normally transported by the billet discharge roller and pass over the billet support cover 8. The device does not participate in the work. (2) When the continuous casting billet that needs to be weighed is transported to the billet support cover 8 directly above the billet conveyor, the conveyor stops running. The telescopic end of the telescopic power mechanism 3 is driven by an external power source to extend upward and push the billet support cover 8 to rise smoothly, completely lifting the continuous casting billet off the roller surface. During this process, the weight of the billet is transferred through the billet support cover 8 and the cylinder of the telescopic power mechanism 3 to the weighing module consisting of the detection plate 7 and multiple weighing units 2. (3) After the billet is stably lifted, six weighing sensors symmetrically distributed on both sides of the central cylinder enter the working state simultaneously and collect the pressure signals they bear. These signals can be transmitted to the integrated data processing unit. The unit can use existing specific algorithms (such as removing outliers, performing weighted averages, etc.) to perform data fusion calculation on the six signals and finally obtain the high-precision actual weight of the continuous casting billet. (4) After weighing is completed, the telescopic end of the telescopic power mechanism 3 retracts synchronously, driving the billet support cover 8 and the continuous casting billet on it to descend smoothly until the continuous casting billet falls back onto the roller surface of the billet exit roller. At this time, the roller is restarted and the continuous casting billet that has been weighed is transported to the next process.

[0024] It should be noted that during the measurement process in step (3), for example, if the weighing value of a single weighing sensor is F1, then the total weight of the billet measured by the 6 weighing sensors is 6*F.

Claims

1. A high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine, characterized in that, include: Columns; The mounting cover is fixed to the top of the column; Several sets of weighing units are embedded in the top of the column. The mounting end of the weighing unit is fixedly installed on the bottom surface of the mounting cover. The detection end of the weighing unit is fixedly provided with a detection plate, which is located in the middle of the column and below the mounting cover. A telescopic power mechanism is placed between the mounting cover and the detection plate. The mounting end of the telescopic power mechanism is fixed on the top surface of the detection plate, and the telescopic end of the telescopic power mechanism passes through the mounting cover and extends above the mounting cover. A billet support cover is located directly above the mounting cover. The telescopic end of the telescopic power mechanism is fixedly connected to the bottom surface of the billet support cover, and the top surface of the billet support cover forms a bearing surface for supporting the billet.

2. The high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 1, characterized in that: The mounting cover has a through hole in the middle for the telescopic end of the telescopic power mechanism to extend out.

3. The high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 1, characterized in that: Several sets of weighing units are located around the telescopic power mechanism.

4. The high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 1, characterized in that: The weighing unit is provided in two sets, which are symmetrically distributed on both sides of the telescopic power mechanism. Each set of weighing units consists of three weighing units arranged at intervals.

5. A high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 1, characterized in that: The weighing unit is a pull rod type weighing sensor.

6. The high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 1, characterized in that: The bottom surface of the column is fixedly provided with a base, which is horizontally positioned.

7. A high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 6, characterized in that: Several reinforcing ribs are fixed between the outer periphery of the base and the column.

8. A high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to claim 1, characterized in that: The telescopic power mechanism is a hydraulic cylinder.

9. A high-precision weighing device for the billet discharge roller conveyor of a continuous casting machine according to any one of claims 1-8, characterized in that: The top edge of the billet support cover is symmetrically and vertically fixed with retaining edges to limit the position of the billet it supports.

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