Graphitization electrode transfer fixture

Abstract

This invention discloses a graphitized electrode transfer fixture, comprising a lifting beam and a lifting frame. The fixture includes a housing, within which a bidirectional lead screw is rotatably fitted. One end of the housing is equipped with a reducer that drives the bidirectional lead screw to rotate. Each of the two reverse threaded sections of the bidirectional lead screw is fitted with a movable plate. Two clamping arms are symmetrically arranged between the two movable plates. The upper ends of the clamping arms are slidably fitted with the housing. Each of the opposite sides of the two clamping arms has a clamping groove. Oppositely arranged support plates are rotatably fitted to the bottom of each opposite side of the two clamping arms. A push rod is movably inserted into the lower part of the clamping arms. When the reducer drives the bidirectional lead screw to rotate, the bidirectional lead screw drives the two movable plates to move synchronously. The movable plates push the support plates upwards via the push rod. This invention effectively avoids scratching or pressure damage to the surface of the high-temperature, brittle graphitized electrode during clamping, significantly improving transfer safety and electrode yield. The clamping and lifting are integrated, making operation efficient and reliable, achieving efficient and safe automated handling.

Description

Technical Field

[0001] This invention relates to the field of material handling equipment technology, specifically to a graphitized electrode transfer fixture. Background Technology

[0002] Graphitized electrodes are essential conductive materials in high-temperature industries such as electric arc furnace steelmaking and submerged arc furnace smelting. They are typically made from carbonaceous raw materials such as petroleum coke and pitch coke through processes including forming, calcination, impregnation, and high-temperature graphitization (2500–3000℃). Due to their high value, high brittleness, easy surface oxidation, and significant strength reduction at high temperatures, extremely high requirements are placed on clamping and handling equipment during the transfer, furnace loading, or vehicle loading processes after production.

[0003] Currently, the commonly used electrode transfer methods in the industry mainly include chain suspension, wire rope binding, or simple mechanical clamps. However, these traditional methods have obvious drawbacks: chains or wire ropes are prone to leaving indentations on the electrode surface or even causing breakage, and cannot achieve precise positioning; while ordinary clamps mostly adopt rigid clamping structures and lack lifting functions, which can easily lead to electrode cracking due to local stress concentration when clamping high-temperature electrodes, especially when transferring electrodes with larger diameters or longer lengths, making it difficult to meet the needs of modern carbon plants for flexible and automated production. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the existing defects and provide a graphitized electrode transfer fixture. By adopting a method of first supporting and then clamping, it effectively avoids scratching or pressure damage to the surface of the high-temperature and brittle graphitized electrode during the clamping process, significantly improving the transfer safety and electrode yield. The clamping and supporting are integrated, and the operation is efficient and reliable. It solves the problems of easy damage, unstable clamping, and poor adaptability in the existing graphitized electrode transfer process, and realizes efficient and safe automated handling, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a graphitized electrode transfer fixture, comprising a lifting beam, the lower part of which is provided with multiple lifting devices, each lifting device including a housing, within which a bidirectional lead screw is rotatably fitted, and one end of the housing is provided with a reducer for driving the bidirectional lead screw to rotate. Both reverse threaded sections of the bidirectional lead screw are adapted to movable plates via lead screw nut seats. Two clamping arms are symmetrically arranged between the two movable plates, the upper ends of which are slidably fitted with the housing. Each of the two clamping arms has a clamping groove on its opposite sides, and a support plate is rotatably fitted to the bottom of each of the opposite sides of the two clamping arms. A push rod is movably inserted into the lower part of the clamping arms. When the reducer drives the bidirectional lead screw to rotate, the bidirectional lead screw drives the two movable plates to move synchronously. The movable plates push the support plates upwards via the push rods, causing the electrode to rise. Subsequently, under the action of the movable plates, the two clamping arms move closer together and clamp the electrode.

[0006] Preferably, the side bottom of the clamping arm is provided with a vertical through groove, and the support plate is pinned to the vertical through groove by a pin.

[0007] Preferably, the upper center of the housing is provided with a lifting shaft, which is rotatably connected to the lifting beam; when multiple lifting devices are arranged in parallel, they are used to lift the same electrode, and the reducers of the multiple lifting devices operate synchronously; when multiple lifting devices are arranged in a line, they are used to lift multiple electrodes.

[0008] Preferably, the upper part of the clamping arm is provided with a slide block, which is slidably engaged with the housing; the lower part of the housing is provided with two parallel base plates, the lead screw nut seat of the bidirectional lead screw is slidably engaged with the two base plates, and the slide block is slidably engaged with the two base plates.

[0009] Preferably, a tension spring is also provided between the slide and the movable plate.

[0010] Preferably, both of the opposite sides of the two trays have bevels, and the bevels are covered with rubber pads.

[0011] Preferably, the clamping groove of the clamping arm is a V-shaped groove or a trapezoidal groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. Driven by a reducer, the bidirectional lead screw rotates, and the bidirectional lead screw synchronously drives the two movable plates to move. First, the push rod pushes the support plate upward to lift the electrode, and then the clamping arms move inward to complete the clamping. It can automatically center and adapt to graphitized electrodes of different diameters. The method of lifting first and then clamping effectively avoids scratching or pressure damage to the surface of high temperature and brittle graphitized electrodes during the clamping process, significantly improving the safety of transportation and the electrode yield. The clamping and lifting are integrated, and the operation is efficient and reliable. 2. The lifting device and the lifting beam are connected by a lifting shaft. Multiple lifting devices can be arranged in parallel to lift a single long electrode in a coordinated manner, or they can be arranged in a line to lift multiple electrodes independently. The adjustment can be made according to production needs and is suitable for different production requirements. In summary, this invention solves the problems of easy damage, unstable clamping, and poor adaptability in the existing graphitized electrode transportation process, and realizes efficient and safe automated handling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the clamp structure of the present invention; Figure 3 This is a cross-sectional view of the fixture of the present invention; Figure 4 This is a schematic diagram of another embodiment of the present invention.

[0014] In the diagram: 1 Lifting beam, 2 Lifting tool, 2.1 Lifting shaft, 2.2 Housing, 2.21 Base plate, 2.3 Reducer, 2.4 Movable plate, 2.5 Clamping arm, 2.51 Vertical through slot, 2.52 Slide seat, 2.6 Support plate, 2.7 Double-acting screw, 2.8 Push rod, 2.9 Tension spring. Detailed Implementation

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0016] Please see Figure 1-4 The present invention provides the following technical solutions: Example 1: A graphitized electrode transfer fixture includes a lifting beam 1, with multiple lifting devices 2 at the lower part of the lifting beam 1. Each lifting device 2 includes a housing 2.2, within which a bidirectional lead screw 2.7 is rotatably fitted. One end of the housing 2.2 is equipped with a reducer 2.3 for driving the bidirectional lead screw 2.7 to rotate. The two reverse threaded sections of the bidirectional lead screw 2.7 are each fitted with a movable plate 2.4 via a lead screw nut seat. Two clamping arms 2.5 are symmetrically arranged between the two movable plates 2.4. The upper ends of the clamping arms 2.5 are slidably fitted with the housing 2.2. Each clamping arm 2.5 has a clamping groove on its opposite side. The clamping groove is a V-shaped groove or a trapezoidal groove. The bottom sides of the two clamping arms 2.5 are rotatably fitted with oppositely arranged support plates 2.6. The opposite sides of the two support plates 2.6 are inclined, and the inclined surfaces are covered with rubber pads. The lower part of the clamping arms 2.5 is movably inserted with a push rod 2.8. When the reducer 2.3 drives the bidirectional lead screw 2.7 to rotate, the bidirectional lead screw 2.7 drives the two movable plates 2.4 to move synchronously. The movable plates 2.4 push the support plates 2.6 upward through the push rod 2.8, so that the electrode rises. Then, under the action of the movable plates 2.4, the two clamping arms 2.5 move closer and clamp the electrode again. The reducer 2.3 drives the bidirectional lead screw 2.7 to rotate. The bidirectional lead screw 2.7 drives the two corresponding movable plates 2.4 to move synchronously through the lead screw nut seat. First, the movable plate 2.4 contacts the push rod 2.8, and then pushes the push rod 2.8 to move. The support plate 2.6 contacts the lower surface of the electrode. When the movable plate 2.4 moves further, the push rod 2.8 pushes the support plate 2.6 to move, thus lifting the electrode and facilitating its upward movement. This effectively reduces damage to the electrode surface during the electrode's entry process. Subsequently, the movable plate 2.4 moves again and contacts the clamping arm 2.5. The movable plate 2.4 pushes the clamping arm 2.5 to move, and the clamping grooves of the two clamping arms 2.5 clamp the electrode. By adopting the method of lifting first and then clamping, the scraping or pressure damage to the surface of the high-temperature, brittle graphitized electrode is effectively avoided during the clamping process. This significantly improves the safety of transportation and the electrode yield. The clamping and lifting are integrated, making the operation efficient and reliable. Moreover, the bidirectional lead screw 2.7 can ensure the symmetrical movement of the two clamping arms 2.5, stabilize the clamping center, and prevent the electrode from tilting. The side bottom of the clamping arm 2.5 is provided with a vertical through groove 2.51. The support plate 2.6 is connected to the vertical through groove 2.51 by a pin. When not in operation, the support plate 2.6 is vertically located in the vertical through groove 2.51.

[0017] Example 2: Unlike Example 1, the upper center of the housing 2.2 is provided with a lifting shaft 2.1, which is rotatably connected to the lifting beam 1. When multiple lifting devices 2 are arranged in parallel, they are used to lift the same electrode. The reducers 2.3 of the multiple lifting devices 2 operate synchronously. When lifting in parallel, the multiple reducers 2.3 operate synchronously to ensure that the force on each lifting point is uniform and to prevent the electrode from bending or slipping. When multiple lifting devices 2 are arranged in a line, they are used to lift multiple electrodes. The same set of clamping system can switch operating modes, such as transferring a single large-diameter electrode or transferring multiple small electrodes in batches, which is suitable for different production needs.

[0018] Example 3: Unlike Example 1, the upper part of the clamping arm 2.5 is provided with a slide block 2.52, which is slidably engaged with the housing 2.2; the lower part of the housing 2.5 is provided with two parallel base plates 2.21, the screw nut seat of the bidirectional screw 2.7 is slidably engaged with the two base plates 2.21, and the slide block 2.52 is slidably engaged with the two base plates 2.21. The base plates 2.21 are mainly load-bearing components to prevent the load from being applied to the bidirectional screw 2.7 during hoisting; a tension spring 2.9 is also provided between the slide block 2.52 and the movable plate 2.4. When the movable plate 2.4 is reset, the tension spring 2.9 pulls the clamping arm 2.5 to reset.

[0019] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents in the content of this invention.

Claims

1. A graphitized electrode transfer fixture, comprising a lifting beam (1), characterized in that: The lower part of the lifting beam (1) is provided with multiple lifting devices (2). Each lifting device (2) includes a housing (2.2). A double-acting lead screw (2.7) is rotatably fitted inside the housing (2.2). One end of the housing (2.2) is provided with a reducer (2.3) that drives the double-acting lead screw (2.7) to rotate. The two reverse threaded sections of the double-acting lead screw (2.7) are adapted to movable plates (2.4) through lead screw nut seats. Two clamping arms (2.5) are symmetrically arranged between the two movable plates (2.4). The upper end of the clamping arm (2.5) is slidably fitted with the housing (2.2). The two clamping arms (2.5) are connected to each other. Both sides have clamping grooves. The bottom of the opposite sides of the two clamping arms (2.5) are rotatably fitted with oppositely arranged support plates (2.6). The lower part of the clamping arms (2.5) is movably inserted with push rods (2.8). When the reducer (2.3) drives the bidirectional lead screw (2.7) to rotate, the bidirectional lead screw (2.7) drives the two movable plates (2.4) to move synchronously. The movable plates (2.4) push the support plates (2.6) upward through the push rods (2.8) to make the electrodes rise. Then, under the action of the movable plates (2.4), the two clamping arms (2.5) move closer and clamp the electrodes again.

2. The graphitized electrode transfer fixture according to claim 1, characterized in that: The side bottom of the clamping arm (2.5) is provided with a vertical through groove (2.51), and the support plate (2.6) is pinned to the vertical through groove (2.51) by a pin.

3. The graphitized electrode transfer fixture according to claim 1, characterized in that: The upper center of the housing (2.2) is provided with a lifting shaft (2.1), which is rotatably connected to the lifting beam (1); when multiple lifting devices (2) are arranged in parallel, they are used to lift the same electrode, and the reducers (2.3) of multiple lifting devices (2) operate synchronously; when multiple lifting devices (2) are arranged in a line, they are used to lift multiple electrodes.

4. The graphitized electrode transfer fixture according to claim 1, characterized in that: The upper part of the clamping arm (2.5) is provided with a slide (2.52), which is slidably engaged with the housing (2.2); the lower part of the housing (2.5) is provided with two parallel base plates (2.21), the screw nut seat of the bidirectional screw (2.7) is slidably engaged with the two base plates (2.21), and the slide (2.52) is slidably engaged with the two base plates (2.21).

5. A graphitized electrode transfer fixture according to claim 4, characterized in that: A tension spring (2.9) is also provided between the slide (2.52) and the movable plate (2.4).

6. The graphitized electrode transfer fixture according to claim 1, characterized in that: Both of the two trays (2.6) have sloping sides on opposite sides, and the sloping sides are covered with rubber pads.

7. The graphitized electrode transfer fixture according to claim 1, characterized in that: The clamping groove of the clamping arm (2.5) is a V-shaped groove or a trapezoidal groove.

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