Guide device for electrode rectangular lifting column and electric arc furnace electrode lifting control equipment

Abstract

The utility model relates to a guide device for an electrode rectangular lifting column, which comprises a guide box body and a plurality of groups of guide wheels, a column body moving channel for the rectangular lifting column to pass through is formed in the guide box body, and the guide wheels are mounted in the guide box body and distributed on two opposite sides of the column body moving channel. And the positions of the guide wheels are matched with the movement paths of the cylinder guide surfaces in the cylinder movement channel in a one-to-one correspondence manner. In addition, the utility model further relates to electric arc furnace electrode lifting control equipment provided with the guide device for the electrode rectangular lifting column. According to the guide device, all the guide wheels are installed in the guide box body, the equipment integration degree is high, the guide device can be integrally assembled and disassembled by disassembling and assembling the guide box body, the convenience of installation and maintenance of the guide device can be improved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric arc furnace production, and in particular relates to a guide device for a rectangular electrode lifting column and electric arc furnace electrode lifting control equipment equipped with the guide device for the rectangular electrode lifting column. Background Art

[0002] Modern electric arc furnaces are increasingly developing towards large-scale and ultra-high power. The stability, reliability, control accuracy and operating speed of key control mechanisms such as the electrode lifting control system are crucial to the arc furnace's goals of shortening smelting time, reducing unit power consumption, controlling smelting costs and achieving optimal power factor. Therefore, the current research on electrode lifting control in the industry is also relatively mature and comprehensive.

[0003] There are many types of existing automatic electrode adjustment devices, but the hydraulic control system has the advantages of fast response speed, high gain, wide bandwidth, large torque (or force) weight ratio, etc., so it is increasingly showing its superiority in the automatic adjustment system of arc furnace electrodes, especially in large arc furnaces. The hydraulic control system controls the electrode by driving the electrode lifting column through the hydraulic cylinder. Among the many links that affect the stability, reliability, control accuracy and operating speed of the electrode lifting control system, the electrode lifting column is an important link, which also includes the guide device of the electrode lifting column.

[0004] At present, the commonly used guide device is to arrange several independent guide roller groups around each electrode lifting column, directly fix the guide roller group on the platform, and adjust and lock the gap between the guide roller group and the electrode lifting column through the tightening screw. However, the guiding performance of this guide method needs to be improved. When the guide rollers are not properly matched, it will affect the guiding reliability and stability of the electrode lifting column; since the entire guiding function is completed by several independent guide roller groups, the gap adjustment is difficult and the operation volume is large; the tightening screw adjustment and locking method is easy to loosen during the production process due to the high-frequency impact of the electrode; in addition, the components of the guide device are scattered, and installation and maintenance are difficult. Utility Model Content

[0005] The utility model relates to a guiding device for a rectangular electrode lifting column and arc furnace electrode lifting control equipment equipped with the guiding device for the rectangular electrode lifting column, which can at least solve some defects of the prior art.

[0006] The utility model relates to a guide device for an electrode rectangular lifting column, comprising a guide box and a plurality of guide wheels, wherein a column movable channel for the rectangular lifting column to pass through is formed in the guide box, and each of the guide wheels is installed in the guide box and distributed on opposite sides of the column movable channel, and the position of each of the guide wheels is matched one-to-one with the movable path of each column guide surface in the column movable channel.

[0007] As one of the implementation modes, two groups of guide wheels are distributed on each side of the column movable channel, and the axes of the two groups of guide wheels on each side are distributed in an eight-shaped shape.

[0008] As one of the implementation modes, the figure eight shape gradually expands from a side close to the column activity channel to a side away from the column activity channel.

[0009] As one of the implementation modes, four groups of guide wheels are distributed in an array, and the center of the array coincides with the central axis of the column movable channel.

[0010] As one of the implementation modes, the gap between the guide wheel and the movable path of the corresponding column guide surface is adjustable.

[0011] As one of the implementation modes, the guide wheel includes an eccentric wheel shaft and a guide wheel body rotatably mounted on the eccentric wheel shaft, and the eccentric wheel shaft is detachably mounted on the guide box.

[0012] As one of the embodiments, the eccentric wheel shaft is pressed and assembled onto the guide box body by an annular pressure plate, wherein the annular pressure plate is detachably fixed to the guide box body, and the inner ring of the annular pressure plate is sleeved on the corresponding end of the eccentric wheel shaft and the two have conical surfaces matched.

[0013] As one of the implementation modes, a locking screw is provided on the annular pressure plate, and the locking screw abuts against the eccentric wheel shaft.

[0014] As one of the implementation modes, the guide box includes a box body and an upper cover plate, and the upper cover plate is detachably connected to the box body.

[0015] The utility model also provides an arc furnace electrode lifting control device, including a rectangular lifting column, and also includes a guide device for the electrode rectangular lifting column as described above, wherein the guide box body is detachably mounted on a structural platform, the rectangular lifting column passes through the guide box body, and each guide wheel is guided and matched with each column guide surface on the rectangular lifting column in a one-to-one correspondence.

[0016] The present invention has at least the following beneficial effects: in the present invention, each guide wheel is installed in a guide box, the equipment has a high degree of integration, and the guide device can be completely assembled and disassembled by disassembling the guide box, which can improve the convenience of installation and maintenance of the guide device and reduce the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of an arc furnace electrode lifting control device provided by an embodiment of the utility model;

[0019] Figure 2 and Figure 3 for Figure 1 A half-section diagram of the local structure;

[0020] Figure 4 A schematic structural diagram of a guide wheel provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1

[0023] like Figure 1-Figure 3 The embodiment of the utility model provides a guiding device for an electrode rectangular lifting column, comprising a guiding box 21 and a plurality of guide wheels 22. A column movable channel for the rectangular lifting column 1 to pass through is formed in the guiding box 21. Each of the guide wheels 22 is installed in the guiding box 21 and distributed on opposite sides of the column movable channel. The position of each of the guide wheels 22 corresponds one-to-one to the movable path of each column guide surface in the column movable channel.

[0024] In this embodiment, each guide wheel 22 is installed in the guide box 21, and the equipment has a high degree of integration. By disassembling the guide box 21, the guide device can be completely assembled and disassembled, which can improve the convenience of installation and maintenance of the guide device and reduce the difficulty of operation.

[0025] Among them, the above-mentioned guide box 21 is used for detachable installation on the structural platform. Therefore, the guide box 21 correspondingly has a detachable connection part for detachable connection with the structural platform, including but not limited to being installed on the structural platform using fasteners such as screws, and the detachable connection part is set accordingly.

[0026] Furthermore, the guide box 21 includes a box body 211 and an upper cover plate 212 , and the upper cover plate 212 is detachably connected to the box body 211 , and the inspection and maintenance of the equipment in the box can be facilitated by disassembling and assembling the upper cover plate 212 .

[0027] For ease of description, the rectangular lifting column 1 is defined as having a height direction, a length direction and a width direction. The height direction is parallel to the vertical direction, the length direction is the length direction of the cross section of the rectangular lifting column 1 , and the width direction is the width direction of the cross section of the rectangular lifting column 1 .

[0028] like Figure 3 , the column movable channel is located in the center of the guide box 21, and each guide wheel 22 is distributed on opposite sides of the column movable channel. The column movable channel corresponds to a rectangular channel, and its length direction corresponds to the length direction of the rectangular lifting column 1, and its width direction corresponds to the width direction of the rectangular lifting column 1; the column guide surface 11 is preferably located on the wide side of the rectangular lifting column 1, and each guide wheel 22 cooperates with the wide side guide of the rectangular lifting column 1, and each guide wheel 22 is distributed on both sides of the column movable channel along the length direction of the column movable channel.

[0029] In one embodiment, if Figure 2 and Figure 3 Two groups of guide wheels 22 are distributed on each side of the column movable channel, and four groups of guide wheels 22 are distributed in an array, and the center of the array coincides with the central axis of the column movable channel. This arrangement can ensure the guiding reliability and stability of the rectangular lifting column 1.

[0030] In one embodiment, if Figure 2 and Figure 3 , two groups of guide wheels 22 are distributed on each side of the column movable channel, and the axes of the two groups of guide wheels 22 on each side are distributed in an eight-shaped shape. Correspondingly, the two column guide surfaces 11 on each side of the rectangular lifting column 1 are also distributed in an eight-shaped shape. For example, a guide groove (L-shaped or V-shaped guide groove) is opened on the wide side of the rectangular lifting column 1, and one of the groove walls constitutes a column guide surface 11; the axis of the guide wheel 22 and the width direction / length direction of the column movable channel have an angle greater than 0° and less than 90°, and the column guide surface 11 and the wide side / long side of the rectangular lifting column 1 have an angle greater than 0° and less than 90°. Based on the above structure, the lateral constraint effect on the rectangular lifting column 1 is better, and the guiding reliability and stability of the rectangular lifting column 1 can be improved. Further, if Figure 2and Figure 3 The figure eight shape gradually expands from the side close to the column activity channel to the side away from the column activity channel. Correspondingly, when the two column guide surfaces 11 on each side of the rectangular lifting column 1 extend toward the inside of the column, the distance between the two gradually decreases until they intersect.

[0031] In the above solution, the axes of the guide wheels 22 are preferably located in the same horizontal plane, which can ensure uniform force on the rectangular lifting column 1 and the guide box 21 .

[0032] Preferably, the gap between the guide wheel 22 and the corresponding movable path of the column guide surface is adjustable, which can improve the reliability of guiding the rectangular lifting column 1, thereby improving the lifting stability and reliability of the rectangular lifting column 1.

[0033] In one embodiment, if Figure 4 The guide wheel 22 includes an eccentric wheel shaft 221 and a guide wheel body 222 rotatably mounted on the eccentric wheel shaft 221 , and the eccentric wheel shaft 221 can be detachably mounted on the guide box body 21 .

[0034] The purpose of the above-mentioned gap adjustment can be achieved by rotating the eccentric shaft 221. The rotation of the eccentric shaft 221 can be performed after releasing the connection between it and the guide box 21. Accordingly, an adjustment portion can be provided on the end of the eccentric shaft 221, and the adjustment portion includes but is not limited to the form of an adjustment hole.

[0035] For the installation of the eccentric shaft 221, preferably, as Figure 1-Figure 3 The eccentric wheel shaft 221 is pressed and assembled to the guide box 21 through the annular pressure plate 23, wherein the annular pressure plate 23 is detachably fixed to the guide box 21, and the inner ring of the annular pressure plate 23 is sleeved on the corresponding end of the eccentric wheel shaft 221 and the conical surfaces of the two are matched. The eccentric wheel shaft 221 is pressed and assembled to the guide box 21 by the conical surface matching of the annular pressure plate 23 and the eccentric wheel shaft 221. This locking method has high reliability and good impact resistance, and can avoid loosening due to high-frequency impact of the electrode, thereby ensuring the guiding reliability and stability of the rectangular lifting column 1.

[0036] Among them, a mounting block can be set in the guide box 21, and a mounting hole can be opened on the mounting block. The inner end of the eccentric wheel shaft 221 is inserted into the mounting hole, and then the outer end of the eccentric wheel shaft 221 is pressed by the annular pressure plate 23, so that the installation reliability of the guide wheel 22 can be guaranteed and its impact resistance can be improved. In the process of installing the annular pressure plate 23 on the guide box 21, by matching with the conical surface of the eccentric wheel shaft 221 and pressing the eccentric wheel shaft 221, the installation accuracy and locking effect of the eccentric wheel shaft 221 can be guaranteed. For the conical surface matching structure, the inner ring of the annular pressure plate 23 gradually shrinks from the end close to the guide box 21 to the end away from the guide box 21, and the conical surface on the eccentric wheel shaft 221 is set accordingly.

[0037] Further preferably, a locking screw is provided on the annular pressure plate 23 , and the locking screw abuts against the eccentric shaft 221 . This approach can further improve the locking reliability of the eccentric shaft 221 .

[0038] The annular pressure plate 23 can be detachably mounted on the guide box 21, including but not limited to the following structure: Figure 1-Figure 3 The annular pressure plate 23 is a flange plate, which is mounted on the guide box body 21 by a plurality of mounting screws.

[0039] In one embodiment, if Figure 4 , a sleeve 223 is sleeved on the eccentric shaft 221, and the guide wheel body 222 is rotatably assembled on the sleeve 223 through a bearing 224. Further, a positioning step is provided on the eccentric shaft 221, and a spacing partition 225 is provided between the guide wheel body 222 and the positioning step. The axial installation position of the guide wheel body 222 on the eccentric shaft 221 can be adjusted through the spacing partition 225, and the distance between the axial end of the guide wheel body 222 and the corresponding step surface (the step surface is the other side of the groove wall of the guide groove) on the rectangular lifting column 1 can be adjusted. This method can adjust the contact area between the guide wheel body 222 and the column guide surface 11, and ensure the guiding reliability and stability of the rectangular lifting column 1.

[0040] Embodiment 2

[0041] An embodiment of the utility model provides an arc furnace electrode lifting control device, including a rectangular lifting column 1, and also includes a guide device for the electrode rectangular lifting column provided in the above-mentioned embodiment one, wherein the guide box 21 is detachably mounted on a structural platform, the rectangular lifting column 1 passes through the guide box 21, and each guide wheel 22 is guided and matched with each column guide surface 11 on the rectangular lifting column 1 in a one-to-one correspondence.

[0042] The specific structure of the rectangular lifting column 1 has been described in the above-mentioned first embodiment, including the arrangement of the column guide surface 11, etc., and therefore, it will not be described in detail in this embodiment.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A guiding device for an electrode rectangular lifting column, characterized in that: The utility model comprises a guide box and a plurality of guide wheels, wherein a column movable channel for a rectangular lifting column to pass through is formed in the guide box, and each guide wheel is installed in the guide box and distributed on two opposite sides of the column movable channel, and the position of each guide wheel is matched one by one with the movable path of each column guide surface in the column movable channel.

2. The guiding device for the rectangular electrode lifting column according to claim 1, characterized in that: Two groups of guide wheels are distributed on each side of the column movable channel, and the axes of the two groups of guide wheels on each side are distributed in an eight-shaped shape.

3. The guiding device for the rectangular electrode lifting column according to claim 2, characterized in that: The figure eight shape gradually expands from a side close to the column activity channel to a side far away from the column activity channel.

4. The guiding device for the rectangular electrode lifting column according to claim 2, characterized in that: The four groups of guide wheels are distributed in an array, and the center of the array coincides with the central axis of the column movable channel.

5. The guiding device for the rectangular electrode lifting column according to claim 1, characterized in that: The gap between the guide wheel and the corresponding movable path of the column guide surface is adjustable.

6. The guiding device for the electrode rectangular lifting column according to claim 5, characterized in that: The guide wheel comprises an eccentric wheel shaft and a guide wheel body rotatably mounted on the eccentric wheel shaft, and the eccentric wheel shaft is detachably mounted on the guide box body.

7. The guiding device for the rectangular electrode lifting column according to claim 6, characterized in that: The eccentric wheel shaft is pressed and assembled onto the guide box body through an annular pressure plate, wherein the annular pressure plate is detachably fixed to the guide box body, and the inner ring of the annular pressure plate is sleeved on the corresponding end of the eccentric wheel shaft and the conical surfaces of the two are matched.

8. The guiding device for the rectangular electrode lifting column according to claim 7, characterized in that: A locking screw is provided on the annular pressure plate, and the locking screw abuts against the eccentric wheel shaft.

9. The guiding device for the rectangular electrode lifting column according to claim 1, characterized in that: The guide box body comprises a box body and an upper cover plate, and the upper cover plate is detachably connected to the box body.

10. An arc furnace electrode lifting control device, comprising a rectangular lifting column, characterized in that: It also includes a guide device for an electrode rectangular lifting column as described in any one of claims 1 to 9, wherein the guide box is detachably mounted on a structural platform, the rectangular lifting column passes through the guide box, and each guide wheel is guided and matched with each column guide surface on the rectangular lifting column in a one-to-one correspondence.

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