Graphite electrode clamping device of electric arc furnace
By designing a combination of arc-shaped plates and adjustment components, the problem of unstable graphite electrode clamping was solved, achieving stable clamping and protection, and improving the accuracy and safety of electrode use.
Patent Information
- Application Number
- CN202521170604.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-08
- Estimated Expiration
- 2035-06-10
AI Technical Summary
Traditional graphite electrode clamping methods lack stability, causing the electrodes to easily loosen, twist, or tilt during use, affecting operational accuracy and safety, and potentially leading to breakage.
A clamping device comprising a first arc plate and a second arc plate is adopted. Through the combined design of the arc plate handle, adjustment component and limiting block, stable clamping of graphite electrode is achieved. The tapered structure of the adjustment shaft and the protection mechanism of the spring are used to prevent loosening and excessive compression.
This achieves stable clamping of the graphite electrode, preventing loosening and twisting, improving operational accuracy and safety, and protecting the electrode from damage.
Smart Images
Figure CN224215793U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of graphite electrode processing technology, and in particular to a graphite electrode clamping device for an electric arc furnace. Background Technology
[0002] Graphite electrodes are mainly made from petroleum coke and needle coke as raw materials, and coal tar pitch as binder. They are produced through calcination, batching, mixing, molding, roasting, graphitization and machining. They are conductors that release electrical energy in the form of an electric arc to heat and melt the furnace charge in an electric arc furnace. According to their quality indicators, they can be divided into ordinary power, high power and ultra-high power.
[0003] Graphite electrodes need to be clamped and fixed during processing. Traditional clamping methods have the problem of insufficient clamping stability. During use, the electrodes are prone to loosening, twisting or tilting due to uneven force, which affects the accuracy and safety of operation. Excessive compression may cause the graphite electrodes to break.
[0004] Therefore, those skilled in the art urgently need to develop a graphite electrode clamping device for electric arc furnaces. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a graphite electrode clamping device for electric arc furnaces.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a graphite electrode clamping device for an electric arc furnace, comprising a first arc plate and a second arc plate, one end of the first arc plate and one end of the second arc plate being hinged to each other, and the opening directions of the first arc plate and the second arc plate being close to each other, and the outer surfaces of the first arc plate and the second arc plate being provided with arc plate handles.
[0007] An arc-shaped buckle plate is rotatably connected to the end of the first arc-shaped plate away from the second arc-shaped plate. The arc-shaped buckle plate and the second arc-shaped plate are connected by a snap fastener. Adjustment components are provided on the first arc-shaped plate and the second arc-shaped plate.
[0008] Preferably, the adjustment assembly includes an adjustment shaft with threads and a threaded connection between the adjustment shaft and a bushing. The bushing is connected to a second arc-shaped plate. One end of the adjustment shaft extends out of the bushing and the second arc-shaped plate, and the other end of the adjustment shaft is connected to an adjustment shaft handle. The end of the adjustment shaft away from the adjustment shaft handle has a tapered structure.
[0009] Preferably, the inner surfaces of the first and second arc-shaped plates are provided with multiple limiting blocks at equal intervals.
[0010] Preferably, the inner side of the first arc-shaped plate is provided with an arc-shaped push plate, the arc-shaped push plate is in the same bending direction as the first arc-shaped plate, a guide post is slidably provided through the first arc-shaped plate, one end of the guide post is connected to the arc-shaped push plate, the other end of the guide post is connected to a baffle, and a spring is sleeved on the section of the guide post located between the arc-shaped push plate and the second arc-shaped plate.
[0011] Preferably, the first arc-shaped plate and the arc-shaped buckle plate are connected by fasteners, the fasteners including threaded bolts and nuts, the end of the bolt away from the nut passing through the arc-shaped buckle plate and the first arc-shaped plate in sequence and connected to the plug.
[0012] Preferably, the arc-shaped buckle plate has a groove on the side away from the first arc-shaped plate, and the second arc-shaped plate has a buckle slot on the side away from the first arc-shaped plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this invention, the graphite electrode is placed between the first and second arc-shaped plates. After closing, the arc-shaped buckle plate is rotated to make the groove and the buckle slot snap together and lock with a nut to achieve initial clamping. The adjustment shaft handle drives the adjustment shaft to rotate, and its conical end moves in a spiral arc towards the inner arc of the second arc-shaped plate to press against the electrode and prevent loosening. Multiple limit blocks and the conical adjustment shaft limit the electrode to ensure that the electrode is evenly stressed around and avoids twisting or tilting. If the pressure is excessive during adjustment, the electrode acts in the opposite direction to the arc-shaped push plate to compress the spring, thereby protecting the electrode. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model. Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model. Figure 2 ;
[0017] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle;
[0018] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the arc-shaped buckle plate described in this utility model;
[0020] Figure 6 for Figure 4 Enlarged view of the structure at point B in the middle.
[0021] In the diagram: 1-First arc plate; 2-Second arc plate; 21-Snap groove; 3-Arch plate handle; 4-Arch buckle plate; 41-Fastener; 42-Plug; 5-Adjusting shaft; 51-Adjusting shaft handle; 52-Shaft sleeve; 6-Limit block; 7-Arch push plate; 8-Guide post; 9-Spring. Detailed Implementation
[0022] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.
[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of 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.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example 1
[0026] Please see Figures 1-3 and Figure 5 This utility model provides an embodiment: a graphite electrode clamping device for an electric arc furnace, including a first arc plate 1 and a second arc plate 2. One end of the first arc plate 1 and one end of the second arc plate 2 are hinged to each other, and the opening directions of the first arc plate 1 and the second arc plate 2 are close to each other. Arc plate handles 3 are provided on the outer surfaces of the first arc plate 1 and the second arc plate 2. An arc-shaped buckle plate 4 is rotatably connected to the end of the first arc plate 1 away from the second arc plate 2. The arc-shaped buckle plate 4 and the second arc plate 2 are connected by a snap fastener. Adjustment components are provided on the first arc plate 1 and the second arc plate 2.
[0027] Furthermore, the adjustment assembly includes an adjustment shaft 5, which is threaded and threadedly connected to a bushing 52. The bushing 52 is connected to a second arc-shaped plate 2. One end of the adjustment shaft 5 extends out of the bushing 52 and the second arc-shaped plate 2, and the other end of the adjustment shaft 5 is connected to an adjustment shaft handle 51. The end of the adjustment shaft 5 away from the adjustment shaft handle 51 has a tapered structure.
[0028] The adjustment shaft 5 is rotated by the adjustment shaft handle 51, thereby enabling the end of the adjustment shaft 5 with the tapered structure to move spirally toward the inner arc of the second arc plate 2, and to abut against the graphite electrode between the first arc plate 1 and the second arc plate 2, so as to prevent the graphite electrode from loosening.
[0029] Furthermore, multiple limiting blocks 6 are provided at equal intervals on the inner surfaces of the first arc plate 1 and the second arc plate 2. Through the limiting of the multiple limiting blocks 6 and the conical adjusting shaft 5, the graphite electrode can be evenly stressed around its perimeter, preventing twisting and tilting.
[0030] Furthermore, the first arc-shaped plate 1 and the arc-shaped buckle plate 4 are connected by fasteners 41, which include threaded bolts and nuts. The end of the bolt away from the nut passes through the arc-shaped buckle plate 4 and the first arc-shaped plate 1 in sequence and is connected to the plug 42. The side of the arc-shaped buckle plate 4 away from the first arc-shaped plate 1 is provided with a groove, and the side of the second arc-shaped plate 2 away from the first arc-shaped plate 1 is provided with a buckle groove 21.
[0031] Place the graphite electrode between the first arc plate 1 and the second arc plate 2 and close them. Rotate the arc plate 4 so that the groove of the arc plate 4 and the buckle slot 21 engage with each other. Lock the arc plate 4 with a nut to complete the initial clamping.
[0032] Example 2
[0033] Please see Figure 4 and Figure 6 Unlike Embodiment 1, the fixedly connected limiting block 6 is replaced with an arc-shaped push plate 7 with an adjustment function. The inner side of the first arc-shaped plate 1 is provided with the arc-shaped push plate 7, and the arc-shaped push plate 7 is in the same bending direction as the first arc-shaped plate 1. A guide post 8 is slidably passed through the first arc-shaped plate 1. One end of the guide post 8 is connected to the arc-shaped push plate 7, and the other end of the guide post 8 is connected to a baffle. A spring 9 is sleeved on the section of the guide post 8 located between the arc-shaped push plate 7 and the second arc-shaped plate 2. There are multiple guide posts 8 and springs 9, and the guide posts 8 are arranged parallel to each other.
[0034] When adjusting via the adjusting shaft 5, as the adjusting shaft 5 goes deeper, the graphite electrodes come into contact with each other. To prevent excessive compression, the graphite electrodes can act in the opposite direction on the arc-shaped push plate 7, and drive the spring 9 to be compressed, thereby protecting the graphite electrodes.
[0035] The working principle of this utility model is as follows: When using this utility model, the graphite electrode is placed between the first arc plate 1 and the second arc plate 2 and closed. The arc-shaped buckle plate 4 is rotated so that the groove of the arc-shaped buckle plate 4 and the buckle slot 21 are engaged with each other. The initial clamping is completed by locking the arc-shaped buckle plate 4 with a nut. The adjusting shaft 5 is rotated by the adjusting shaft handle 51, so that the end of the adjusting shaft 5 with the conical structure moves spirally towards the inner arc of the second arc plate 2, abutting against the graphite electrode between the first arc plate 1 and the second arc plate 2, preventing the graphite electrode from loosening.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A graphite electrode clamping device for an electric arc furnace, characterized in that: It includes a first arc plate (1) and a second arc plate (2), one end of the first arc plate (1) and one end of the second arc plate (2) are hinged to each other, and the opening directions of the first arc plate (1) and the second arc plate (2) are close to each other. The outer surfaces of the first arc plate (1) and the second arc plate (2) are provided with arc plate handles (3). An arc-shaped buckle plate (4) is rotatably connected to the end of the first arc plate (1) away from the second arc plate (2). The arc-shaped buckle plate (4) and the second arc plate (2) are connected by a snap fastener. Adjustment components are provided on the first arc plate (1) and the second arc plate (2).
2. The graphite electrode clamping device for an electric arc furnace according to claim 1, characterized in that: The adjustment assembly includes an adjustment shaft (5), which is threaded and threadedly connected to a bushing (52). The bushing (52) is connected to a second arc plate (2). One end of the adjustment shaft (5) extends out of the bushing (52) and the second arc plate (2). The other end of the adjustment shaft (5) is connected to an adjustment shaft handle (51). The end of the adjustment shaft (5) away from the adjustment shaft handle (51) has a tapered structure.
3. The graphite electrode clamping device for an electric arc furnace according to claim 2, characterized in that: Multiple limiting blocks (6) are provided at equal intervals on the inner surfaces of the first arc plate (1) and the second arc plate (2).
4. The graphite electrode clamping device for an electric arc furnace according to claim 2, characterized in that: An arc-shaped push plate (7) is provided on the inner side of the first arc plate (1). The arc-shaped push plate (7) is in the same bending direction as the first arc plate (1). A guide post (8) is slidably provided on the first arc plate (1). One end of the guide post (8) is connected to the arc-shaped push plate (7). The other end of the guide post (8) is connected to a baffle. A spring (9) is sleeved on a section of the guide post (8) between the arc-shaped push plate (7) and the second arc plate (2).
5. The graphite electrode clamping device for an electric arc furnace according to claim 1, characterized in that: The first arc plate (1) is connected to the arc buckle plate (4) by fasteners (41). The fasteners (41) include a threaded bolt and a nut. The end of the bolt away from the nut passes through the arc buckle plate (4) and the first arc plate (1) in sequence and is connected to the plug (42).
6. The graphite electrode clamping device for an electric arc furnace according to claim 5, characterized in that: The arc-shaped buckle plate (4) has a groove on the side away from the first arc-shaped plate (1), and the second arc-shaped plate (2) has a buckle groove (21) on the side away from the first arc-shaped plate (1).