A weighing device for an electric furnace

Abstract

The utility model provides a kind of weighing device for electric furnace, the weighing device for electric furnace provided includes at least one weighing mechanism, weighing mechanism includes weighing sensor and weighing support, weighing sensor is located in weighing support, weighing support can pass the weight of the body to be weighed to weighing sensor, weighing support is used to protect weighing sensor so that it only bears the force of direction of measurement;Weighing support includes the first pull rod structure and second pull rod structure between upper panel and lower bottom plate, so that upper panel can move up and down relative to lower bottom plate;Two pull rod structures are vertically arranged, and the end of first pull rod structure is adjacent to the beginning of second pull rod structure, the beginning of two pull rod structures is hinged with lower bottom plate, and the end is hinged with upper panel;Or, the beginning of first pull rod structure is adjacent to the end of second pull rod structure, the beginning of two pull rod structures is hinged with upper panel, and the end is hinged with lower bottom plate.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace steelmaking technology, and in particular to a weighing device for electric furnaces. Background Technology

[0002] In the electric arc furnace (EAF) steelmaking process, raw materials are often added in batches from the start of smelting to the final tapping. Whether scrap steel or wastewater is added, knowing the weight of the scrap steel in the EAF online is crucial for customizing the smelting process. A furnace weighing system is one way to achieve this. Most current furnace weighing systems use beam-type or shaft-type load cells. However, beam-type load cells are prone to damage because the furnace tilts simultaneously with the tapping and slag removal processes, generating friction on the weighing surface. Furthermore, heat from the furnace can easily be transferred to the load cells through the under-furnace support plate, reducing their accuracy or even causing overheating damage. Axial-type sensors are suitable for tilting platforms sitting on rollers, with the load cell installed inside the rollers. However, this design requires weighing the furnace body, the entire cradle, and all equipment on it simultaneously, leading to a larger tonnage load cell. Furthermore, the total weight is not fully borne by the load cell during weighing, resulting in inaccurate furnace body weighing. If the load cell malfunctions and needs replacement, the tilting platform must be lifted, making replacement time-consuming and labor-intensive, which is detrimental to electric arc furnace steelmaking operations. To address this issue, patent application CN202122722476.4 proposes an electric arc furnace weighing device that installs the load cell inside a weighing bracket, protecting it from forces only in the weighing direction. A cooling structure is installed above the load cell to prevent heat transfer from the furnace body, thus avoiding affecting weighing accuracy or even thermal damage to the load cell. Additionally, a protective cover is installed on the weighing bracket to block ambient radiant heat and prevent damage to the load cell from molten steel splashing during electric arc furnace smelting. However, there is still room for improvement. For example, the entire device can still jam, molten steel debris can easily fly into the weighing bracket from below the protective cover, affecting the weighing accuracy or even thermally damaging the weighing sensor. The cooling structure has poor cooling effect, and the weighing sensor must have a locking hole at the bottom to connect with the bottom plate, resulting in poor compatibility. Utility Model Content

[0003] In view of the problems existing in the prior art, the main purpose of this utility model is to provide a weighing device for electric furnaces. The provided weighing device for electric furnaces has a clever structure, is easy to maintain, has better protection for the weighing sensor, can effectively prevent jamming, and has more accurate weighing.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model provides a weighing device for an electric furnace. The weighing device for an electric furnace includes at least one weighing mechanism. The weighing mechanism includes a weighing sensor and a weighing bracket. The weighing sensor is disposed inside the weighing bracket. The weighing bracket can transfer the weight of the object to be weighed to the weighing sensor. The weighing bracket is used to protect the weighing sensor so that it only bears the force in the weighing direction.

[0006] The weighing support includes a first tie rod structure and a second tie rod structure between the upper panel and the lower base plate, so that the upper panel can move up and down relative to the lower base plate; the two tie rod structures are arranged perpendicularly, and the end of the first tie rod structure is close to the beginning of the second tie rod structure. The beginning of both tie rod structures is hinged to the lower base plate, and their ends are hinged to the upper panel; or, the beginning of the first tie rod structure is close to the end of the second tie rod structure, the beginning of both tie rod structures is hinged to the upper panel, and their ends are hinged to the lower base plate.

[0007] As a further description of the above technical solution, the first pull rod structure includes a first pull rod, the upper panel facing the lower base plate is provided with a first hinge seat, the lower base plate facing the upper panel is provided with a second hinge seat, and the two hinge seats are respectively hinged to the first and second ends of the first pull rod.

[0008] The second tie rod structure includes a second tie rod, a third hinge seat is provided on the surface of the upper panel facing the lower base plate, and a fourth hinge seat is provided on the surface of the lower base plate facing the upper panel. The two hinge seats are respectively hinged to the first and second ends of the second tie rod.

[0009] As a further description of the above technical solution, the upper panel and the lower base plate form an accommodating space for the weighing sensor; the top of the weighing sensor is connected to the upper panel of the weighing bracket through a top plate, and the lower end of the weighing sensor is connected to the lower base plate of the weighing bracket through an adapter plate.

[0010] As a further description of the above technical solution, the side of the upper panel facing the lower base plate is provided with a first groove, and the top plate is partially embedded in the first groove.

[0011] As a further description of the above technical solution, both the upper panel and the top plate are provided with water channels, and the water channels include an inlet and an outlet that are connected to an external cooling device.

[0012] As a further description of the above technical solution, the adapter plate includes a first plate and a second plate, both of which are detachably connected to the lower base plate, and the first plate and the second plate together constitute an adapter groove for accommodating the lower part of the weighing sensor.

[0013] As a further description of the above technical solution, a guide and limiting structure is provided on the surface of the lower base plate facing the upper panel. The guide and limiting structure is used for the installation guidance and limiting of the first plate and the second plate.

[0014] As a further description of the above technical solution, the weighing bracket is surrounded by a protective plate assembly on its side.

[0015] As a further description of the above technical solution, the protective plate assembly includes a first protective plate connected to the side of the upper panel and a second protective plate connected to the side of the lower base plate;

[0016] The vertical length of either the first or second protective plate is less than the interval between the upper panel and the lower base plate; the total vertical length of either the first or second protective plate is greater than the interval between the upper panel and the lower base plate.

[0017] The first and second protective plates, located on the same side, are offset in the horizontal direction, with the first protective plate located outside the second protective plate.

[0018] As a further description of the above technical solution, the upper panel has a second groove on the side opposite to the lower base plate, and a support seat is embedded in the second groove. The support seat is used to support the weighed body.

[0019] Based on the above technical solutions, the outstanding effects of this utility model are as follows:

[0020] 1. In the weighing device for electric furnaces provided by this utility model, the weighing sensor establishes a weighing relationship with the object being weighed through a weighing bracket. The weighing sensor is installed inside the weighing bracket, which effectively protects the weighing sensor so that it only bears the force in the weighing direction. The weighing bracket includes an upper panel and a lower base plate, which are connected by a first tie rod structure and a second tie rod structure, so that the upper panel can move up and down relative to the lower base plate. However, compared with the electric furnace weighing device in the prior art, the two tie rod structures in this utility model are arranged perpendicularly to each other, and the end of the first tie rod structure is close to the beginning of the second tie rod structure. The beginning of both tie rod structures is hinged to the lower base plate, and their ends are hinged to the upper panel; or, the beginning of both tie rod structures is close to the end of the second tie rod structure, the beginning of both tie rod structures is hinged to the upper panel, and their ends are hinged to the lower base plate, so that the connection between the upper panel and the lower base plate bracket is more flexible, thereby ensuring that the weighing mechanism is less likely to jam and can carry out weighing operations smoothly.

[0021] 2. In the weighing device for electric furnace provided by this utility model, the upper end of the weighing sensor is connected to the upper panel through a top plate, and a water cooling channel is provided in the top plate, which, together with the original water cooling channel in the upper panel, more effectively avoids the influence on weighing accuracy or even thermal damage to the weighing sensor.

[0022] 3. In the weighing device for electric furnaces provided by this utility model, the lower part of the weighing sensor is connected to the lower base plate of the weighing bracket through an adapter plate. The adapter plate adopts a split structure and together form an adapter groove for accommodating the lower part of the weighing sensor. The adapter groove can be designed according to the shape of the lower part of the weighing sensor, so that the weighing device for electric furnaces of this utility model can use weighing sensors of different specifications, and has stronger adaptability.

[0023] 4. In the weighing device for electric furnaces provided by this utility model, the protective plate group adopts a labyrinth structure, which is more conducive to preventing splashed molten steel and debris and protecting the components, including the weighing sensor, installed inside the weighing bracket. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the weighing device for an electric furnace in the first embodiment of this utility model;

[0025] Figure 2 This is a first-view structural schematic diagram of the weighing device for an electric furnace (excluding the protective plate assembly) in the first embodiment of this utility model;

[0026] Figure 3 This is a second-view structural schematic diagram of the weighing device for electric furnaces (excluding the protective plate assembly) in the first embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the weighing sensor mounted on the lower base plate in the first embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the upper panel in the first embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the adapter plate installed on the lower base plate in the first embodiment of this utility model;

[0030] Figure 7 This is a schematic diagram of the adapter plate installed on the lower base plate in the second embodiment of this utility model;

[0031] Figure 8 This is a three-dimensional structural diagram of the weighing sensor mounted on the lower base plate in the second embodiment of the present invention;

[0032] Figure 9 This is a top view of the weighing sensor mounted on the lower base plate in the second embodiment of this utility model;

[0033] Figure 10 This is a first-view structural schematic diagram of the weighing device for an electric furnace (excluding the protective plate assembly) in the second embodiment of this utility model;

[0034] Figure 11 This is a partial planar structural diagram of the adapter plate installed on the lower base plate in the third embodiment of this utility model.

[0035] Explanation of icon numbers:

[0036] 1. Weighing sensor;

[0037] 21. Top panel; 211. First hinge seat; 212. Third hinge seat; 213. First groove; 214. First water inlet; 215. First water outlet; 216. First limiting block; 217. Adjustable bolt;

[0038] 22. Lower base plate; 221. Second hinge seat; 222. Fourth hinge seat; 223. Second limit block; 224. Leveling bolt;

[0039] 231. First pull rod; 232. Second pull rod;

[0040] 24. Top plate; 241. Second water inlet; 242. Second water outlet;

[0041] 251. First plate; 252. Second plate; 253. Adaptor groove;

[0042] 261. First guide limiting part; 262. Second guide limiting part; 263. Third guide limiting part;

[0043] 271. First protective plate; 272. Second protective plate;

[0044] 28. Support base. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] In the description of this utility model, it should be noted that the terms "upper," "middle," "lower," "inner," "outer," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0047] Please see Figures 1 to 11 This utility model discloses a weighing device for an electric furnace. The weighing device for an electric furnace includes at least one weighing mechanism. The weighing mechanism includes a weighing sensor 1 and a weighing bracket. The weighing sensor 1 is disposed inside the weighing bracket. The weighing bracket can transfer the weight of the object to be weighed to the weighing sensor 1. The weighing bracket is used to protect the weighing sensor 1 so that it only bears the force in the weighing direction.

[0048] The weighing support includes a first tie rod structure and a second tie rod structure between the upper panel 21 and the lower base plate 22, so that the upper panel 21 can move up and down relative to the lower base plate 22; the two tie rod structures are arranged perpendicularly, and the end of the first tie rod structure is close to the beginning of the second tie rod structure. The beginning of both tie rod structures is hinged to the lower base plate 22, and their ends are hinged to the upper panel 21; or, the beginning of the first tie rod structure is close to the end of the second tie rod structure, the beginning of both tie rod structures is hinged to the upper panel 21, and their ends are hinged to the lower base plate 22.

[0049] In the above-described configuration, the weighing sensor 1 establishes a weighing relationship with the object being weighed through the weighing bracket. The weighing sensor 1 is installed inside the weighing bracket, which effectively protects the weighing sensor 1 so that it only bears the force in the weighing direction. (It should be understood that, during use, as with the electric furnace weighing device disclosed in application number CN202122722476.4, other component forces generated by factors such as furnace tilting will be transmitted to the cradle platform by the weighing bracket, thereby protecting the weighing sensor 1.) The weighing bracket includes an upper panel 21 and a lower base plate 22, which are connected by a first tie rod structure and a second tie rod structure, thereby protecting the upper panel 21. It can move up and down relative to the lower base plate 22; however, unlike the electric furnace weighing device in the prior art, the two tie rod structures in this utility model are arranged perpendicularly to each other, and the end of the first tie rod structure is close to the beginning of the second tie rod structure. The beginning of both tie rod structures is hinged to the lower base plate 22, and their ends are hinged to the upper panel 21; or, the beginning of the first tie rod structure is close to the end of the second tie rod structure, the beginning of both tie rod structures is hinged to the upper panel 21, and their ends are hinged to the lower base plate 22, thereby making the connection between the upper panel 21 and the lower base plate 22 support more flexible, thus ensuring that the weighing mechanism is less likely to jam and can carry out weighing operations smoothly.

[0050] Please see Figures 1 to 6Specifically, in the first embodiment, the first pull rod structure includes a first pull rod 231, a first hinge seat 211 is provided on the surface of the upper panel 21 facing the lower base plate 22, and a second hinge seat 221 is provided on the surface of the lower base plate 22 facing the upper panel 21. The two hinge seats are respectively hinged to the first and second ends of the first pull rod 231. The second pull rod structure includes a second pull rod 232, a third hinge seat 212 is provided on the surface of the upper panel 21 facing the lower base plate 22, and a fourth hinge seat 222 is provided on the surface of the lower base plate 22 facing the upper panel 21. The two hinge seats are respectively hinged to the first and second ends of the second pull rod 232. More specifically, in this embodiment, both the upper panel 21 and the lower base plate 22 are rectangular. The first pull rod 231 extends in the front-to-back direction, its first end hinged to the second hinge seat 221 via a spherical bearing and a pin, and its last end hinged to the first hinge seat 211 via a spherical bearing and a pin, thus forming a first connection between the upper panel 21 and the lower base plate 22. The second pull rod 232 extends in the left-to-right direction, its first end hinged to the second hinge seat 221 via a spherical bearing and a pin. The upper panel 21 and the lower base plate 22 are hinged to the fourth hinge seat 222 via connecting parts such as pins and shafts. The end of the upper panel 21 is hinged to the third hinge seat 212 via a spherical bearing and connecting parts such as pins and shafts, thus forming a second connection between the upper panel 21 and the lower base plate 22. This two-part connection structure has advantages such as low friction, easy angle adjustment, good vibration resistance, low noise, high load capacity, and strong impact resistance. Therefore, the connection between the upper panel 21 and the lower base plate 22 is more flexible, the weighing mechanism is less prone to jamming, weighing is smoother, and weighing accuracy is higher. Since the process of transferring the weighed object to the upper panel 21 also causes relative horizontal displacement between the upper panel 21 and the lower base plate 22, further... Figures 8 to 10As shown, in the second embodiment, a limiting unit is also provided. The limiting unit includes a first limiting block 216 disposed on the bottom surface of the upper panel 21 and a second limiting block 223 disposed on the top surface of the lower base plate 22. The cross-sections of the two limiting blocks are both "L" shaped, for example, angle steel. The first limiting block 216 is located outside the second limiting block 223, and their corresponding sides are parallel to each other and have a preset gap. This ensures that the relative displacement between the upper panel 21 and the lower base plate 22, whether in the left-right direction or the front-back direction in the horizontal plane, is a limited relative displacement. This prevents the first and second tie rod structures from having their effective service life shortened due to excessive traction, and also avoids the upper panel 21 and the lower base plate 22 from having excessive relative displacement during weighing, which would affect the weighing accuracy. More preferably, in this embodiment, since the first limiting block 216 is located outside the second limiting block 223, adjustable bolts 217 are also provided through both sides of the first limiting block 216. The adjustable bolts 217 can be adjusted into the preset gap between the two limiting blocks or flush with the inner wall of the first limiting block 216, thereby better adjusting the relative displacement between the two limiting blocks to meet the overall assembly requirements and providing greater flexibility. Of course, in other embodiments, if the first limiting block 216 is located inside the second limiting block 223, the adjusting bolts can also be provided through the second limiting block 223 to adjust their length extending between the two limiting blocks (preset gap).

[0051] Please see Figures 4 to 6 Specifically, in this embodiment, the upper panel 21 and the lower base plate 22 form an accommodating space to house the weighing sensor 1 and the two tie rod structures. The top of the weighing sensor 1 is connected to the upper panel 21 of the weighing bracket via a top plate 24, meaning the weight of the object being weighed is sequentially transferred to the weighing sensor 1 through the upper panel 21 and the top plate 24. The lower end of the weighing sensor 1 is connected to the lower base plate 22 of the weighing bracket via an adapter plate. The top plate 24 is rectangular, and the side of the upper panel 21 facing the lower base plate 22 has a rectangular groove, allowing the upper half of the top plate 24 to be fitted into the first groove 213. Furthermore, both the upper panel 21 and the top plate 24 have water channels, each including an inlet and an outlet connected to an external cooling device, such as... Figures 1 to 2 ,as well as Figures 4 to 5As shown, the water channel provided on the upper panel 21 includes a first inlet 214 and a first outlet 215, which are located on the side of the upper panel 21, with the first inlet 214 to the left of the first outlet 215. The water channel provided on the top plate 24 includes a second inlet 241 and a second outlet 242, which are located on the side of the upper panel 21, with the second inlet 241 to the left of the second outlet 242. During operation, the cooling medium flows through these two water channels, thereby cooling both the upper panel 21 and the top plate 24. This dual cooling effectively reduces the amount of heat transferred from the furnace body to the weighing sensor 1 through the upper panel 21 and the top plate 24, effectively avoiding any impact on weighing accuracy or even thermal damage to the weighing sensor.

[0052] Please see Figures 1 to 4 ,as well as Figure 6 Specifically, in this embodiment, the adapter plate includes a first plate 251 and a second plate 252. Both the first plate 251 and the second plate 252 are detachably connected to the lower base plate 22, and together they form an adapter groove 253 for accommodating the lower part of the weighing sensor 1. In this embodiment, the first plate 251 and the second plate 252 are generally rectangular, with their opposite end faces concave, making the cross-section of the adapter groove 253 circular. Of course, in other embodiments, the cross-sectional shape of the adapter groove 253 can also be designed into other shapes according to the lower cross-sectional shape of the weighing sensor 1, such as square or polygonal. Figure 11 The circular cut edges shown in the diagram allow for the installation of load cells 1 of different specifications into the weighing bracket of this embodiment. This improves the adaptability of the weighing bracket and prevents the load cells 1 from twisting during use, thus affecting weighing accuracy. Furthermore, while ensuring that the shape of the adapter groove 253 is adapted to the load cell, the first plate 251 and the second plate 252 constituting the adapter plate can also generally have other shapes. For example, in the second embodiment, the second plate 252 is shaped like... Figure 7 The U-shape shown.

[0053] Specifically, in this embodiment, the lower base plate 22 has a guide and limiting structure on its surface facing the upper panel 21. This guide and limiting structure guides and limits the installation of the first plate 251 and the second plate 252, making installation more convenient and faster. More specifically, in this embodiment, the guide and limiting structure includes a first guide and limiting portion 261, a second guide and limiting portion 262, and a third guide and limiting portion 263, all in an elongated shape. The first guide and limiting portion 261 is parallel to the second guide and limiting portion 262, and the third guide and limiting portion 263 is located at one end of the first and second guide and limiting portions 261 and 262, and is perpendicular to them. Thus, the three guide and limiting portions together form an installation position for installing the adapter plate. When installing the first plate 251 and the second plate 252, the two plates can be pushed sequentially into the mounting positions defined by the guide limiting structure along the length direction of the first guide limiting part 261 and the second guide limiting part 262, and then fasteners are used to securely connect the two plates to the lower base plate 22. In this embodiment, the second plate 252 is pushed in before the first plate 251 along the length direction of the first guide limiting part 261 and the second guide limiting part 262 until its side away from the first plate 251 abuts against the third guide limiting part 263. Then, the first plate 251 is pushed in so that its side facing the third guide limiting part 263 abuts against the second plate 252. It should be understood that the weighing sensor 1 is in place before the first plate 251 so that it can be limited after the first plate 251 is pushed in. For further details, please refer to [link to relevant documentation]. Figures 8 to 10 In the second embodiment, the weighing bracket includes a leveling bolt unit on the lower base plate 22. The leveling bolt unit includes four leveling bolts 224, which are symmetrically arranged in two groups on the edge of the lower base plate 22 facing the upper panel 21. The top of each leveling bolt 224 can be displaced vertically relative to the lower base plate 22. Thus, during normal use of the weighing device for the electric furnace, its top will not contact the upper panel 21 which is being pressed down, thus providing support to the upper panel 21 and avoiding affecting the weighing accuracy. When the weighing sensor 1 needs to be replaced, the leveling bolts 224 are adjusted to push against the upper panel 21, thereby increasing the accommodating space between the upper panel 21 and the lower base plate 22. This allows the weighing sensor 1 to be disassembled and replaced directly without removing the upper panel 21.

[0054] Please see Figure 1Specifically, in this embodiment, the weighing bracket is surrounded by a protective plate assembly. The protective plate assembly is C-shaped and located on the three sides of the weighing bracket. This reduces the impact of furnace heat radiation on the weighing sensor 1 while preventing molten steel and debris generated during smelting from splashing into the weighing bracket and damaging the weighing sensor 1. More specifically, in this embodiment, the protective plate assembly includes a first protective plate 271 connected to the side of the upper panel 21 and a second protective plate 272 connected to the side of the lower base plate 22; the vertical length of either the first protective plate 271 or the second protective plate 272 is less than the interval between the upper panel 21 and the lower base plate 22; the total vertical length of either the first protective plate 271 or the second protective plate 272 is greater than the interval between the upper panel 21 and the lower base plate 22; the first protective plate 271 and the second protective plate 272 located on the same side of the weighing bracket are staggered in the horizontal direction, and the first protective plate 271 is located outside the second protective plate 272, thereby forming a labyrinth-like protection, which is more conducive to preventing splashed molten steel and debris and protecting the components, including the weighing sensor 1, installed inside the weighing bracket.

[0055] Please see Figures 1 to 3 Specifically, in this embodiment, the upper panel 21 has a second groove on the side facing away from the lower base plate 22. A rectangular support 28 is embedded in the second groove. The support 28 supports the object being weighed, and the weight of the object is transmitted to the weighing sensor 1 sequentially through the support 28, the upper panel 21, and the top plate 24. Since the support 28 is in direct contact with the object being weighed, it is more susceptible to damage due to heat. Therefore, it is designed to be embedded in the upper panel 21, and can be replaced when damaged to a certain extent, thereby effectively reducing the maintenance cost of the overall device. Preferably, in this embodiment, the surface of the support 28 is hardened and corrosion-resistant, for example, using 42CrMo tempering and nitriding, resulting in a high surface finish and a hardness of 430-480 HB.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any changes, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A weighing device for an electric furnace, characterized in that, It includes at least one weighing mechanism, the weighing mechanism includes a weighing sensor and a weighing bracket, the weighing sensor is disposed inside the weighing bracket, the weighing bracket can transfer the weight of the object to be weighed to the weighing sensor, and the weighing bracket is used to protect the weighing sensor so that it only bears the force in the weighing direction; The weighing support includes a first tie rod structure and a second tie rod structure between the upper panel and the lower base plate, so that the upper panel can move up and down relative to the lower base plate; the two tie rod structures are arranged perpendicularly, and the end of the first tie rod structure is close to the beginning of the second tie rod structure. The beginning of both tie rod structures is hinged to the lower base plate, and their ends are hinged to the upper panel; or, the beginning of the first tie rod structure is close to the end of the second tie rod structure, the beginning of both tie rod structures is hinged to the upper panel, and their ends are hinged to the lower base plate.

2. The weighing device for an electric furnace according to claim 1, wherein The first pull rod structure includes a first pull rod, a first hinge seat is provided on the surface of the upper panel facing the lower base plate, and a second hinge seat is provided on the surface of the lower base plate facing the upper panel. The two hinge seats are respectively hinged to the first and second ends of the first pull rod. The second tie rod structure includes a second tie rod, a third hinge seat is provided on the surface of the upper panel facing the lower base plate, and a fourth hinge seat is provided on the surface of the lower base plate facing the upper panel. The two hinge seats are respectively hinged to the first and second ends of the second tie rod.

3. The weighing device for an electric furnace according to claim 1, wherein The upper panel and the lower base plate form an accommodating space for the weighing sensor; the top of the weighing sensor is connected to the upper panel of the weighing bracket through a top plate, and the lower end of the weighing sensor is connected to the lower base plate of the weighing bracket through an adapter plate.

4. The weighing device for an electric furnace according to claim 3, wherein The upper panel has a first groove on the side facing the lower base plate, and the top plate is partially embedded in the first groove.

5. The weighing device for an electric furnace according to claim 4, wherein Both the upper panel and the top panel are provided with water channels, and each water channel includes an inlet and an outlet that are connected to an external cooling device.

6. The weighing device for an electric furnace according to claim 3, wherein The adapter plate includes a first plate and a second plate, both of which are detachably connected to the lower base plate, and together the first plate and the second plate form an adapter groove for accommodating the lower part of the weighing sensor.

7. The weighing device for an electric furnace according to claim 6, wherein The bottom plate is provided with a guide and limiting structure on the surface facing the top plate. The guide and limiting structure is used for the installation guidance and limiting of the first plate and the second plate.

8. The weighing device for an electric furnace according to claim 1, wherein The weighing support is surrounded by a protective plate assembly on its sides.

9. The weighing device for an electric furnace according to claim 8, wherein The protective plate assembly includes a first protective plate connected to the side of the upper panel and a second protective plate connected to the side of the lower base plate; The vertical length of either the first or second protective plate is less than the interval between the upper panel and the lower base plate; the total vertical length of either the first or second protective plate is greater than the interval between the upper panel and the lower base plate. The first and second protective plates, located on the same side, are offset in the horizontal direction, with the first protective plate located outside the second protective plate.

10. The weighing device for an electric furnace according to claim 1, wherein The upper panel is provided with a second slot part on the side away from the lower bottom plate, and a support seat is embedded in the second slot part, which is used to carry the weighing body.

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