An electrode clamping device for vacuum consumable arc furnace

Abstract

The present invention belongs to the field of vacuum consumable electric arc furnaces, and provides an electrode clamping device for vacuum consumable electric arc furnaces, including a lifting mechanism, the lifting mechanism is installed on the vacuum consumable electric arc furnace, a clamping tube is fixedly installed at the output end of the lifting mechanism, an electrode rod is inserted inside the clamping tube, and matching connection structures are respectively provided at both ends of the electrode rod, so that another electrode rod can be connected to one end of the electrode rod below it through the connection structure, and a conductive tile is provided on the inner side wall of the clamping tube. The present invention can connect the two ends of two electrode rods by providing a connection structure, and when the length of the electrode rod is consumed to be insufficient to continue to serve as an electrode, one end of another electrode rod is connected to the top of the electrode rod, and then the bottom end of the electrode rod is re-extended into the vacuum consumable electric arc furnace, so that the remaining electrode rod can continue to serve as an electrode, thereby avoiding unnecessary waste.

Description

Technical Field

[0001] The invention belongs to the field of vacuum consumable arc furnaces, and in particular relates to an electrode clamping device for vacuum consumable arc furnaces. Background Art

[0002] A vacuum arc furnace is an electric furnace that uses the energy of an electric arc to melt metal in a vacuum chamber. The furnace body is a closed container that is evacuated or filled with inert gas. After the electrodes introduced from the top of the furnace and the water-cooled crystallizer at the bottom of the furnace are energized to start an arc, an arc is generated, and the heat of the arc melts the metal or alloy and solidifies it in the crystallizer. Vacuum arc furnaces are mainly divided into two categories according to the type of electrode: consumable furnaces and non-consumable furnaces. A vacuum arc furnace is one in which the electrode is made of the metal to be melted. If a non-melting material is used as the electrode, it is called a vacuum non-consumable arc furnace. Consumable furnaces are mainly used in industry.

[0003] When installing existing consumable electrodes, a hole is usually opened on the top of the electric arc furnace, and a bracket is set above the top of the furnace. An electrode clamping ring is set on the bracket. The electrode is inserted from the electrode clamping ring and enters the furnace body through the hole on the top of the electric arc furnace to work.

[0004] Since the diameter of the hole is equal to the diameter of the electrode, the clamping ring cannot extend into the arc furnace. As the electrode is consumed, the length of the electrode gradually decreases. When the electrode length is reduced to a certain amount, the distance between the electrode and the metal in the furnace will increase to the point where the electrode cannot generate an arc. At this time, the electrode needs to be replaced, and the remaining electrode will be recycled and then remade into a new electrode. This method will result in incomplete electrode melting and waste resources during remaking. Summary of the invention

[0005] The object of the present invention is to provide an electrode clamping device for a vacuum consumable arc furnace, aiming to solve the technical problem of waste of resources caused by incomplete electrode melting in the prior art.

[0006] The present invention is implemented as follows: an electrode clamping device for a vacuum consumable arc furnace comprises a lifting mechanism, the lifting mechanism is installed on the vacuum consumable arc furnace, a clamping tube is fixedly installed at the output end of the lifting mechanism, an electrode rod is inserted into the clamping tube, both ends of the electrode rod are respectively provided with matching connection structures, so that another electrode rod can be connected to one end of the electrode rod below it through the connection structure, a conductive tile is provided on the inner side wall of the clamping tube, and the conductive tile is electrically connected to an external power supply, and further comprises:

[0007] An adjusting mechanism, wherein the adjusting mechanism is mounted on the clamping tube, a plurality of output ends of the adjusting mechanism are in contact with the surface of the electrode rod, and the adjusting mechanism is used to clamp the electrode rod and drive the electrode rod to rise and fall;

[0008] A clamping mechanism, wherein the clamping mechanism is mounted on the clamping tube, wherein a plurality of output ends of the clamping mechanism are respectively in contact with a plurality of input ends of the adjusting mechanism, and the clamping mechanism is used to drive the adjusting mechanism to clamp the electrode rod;

[0009] The power mechanism is installed on the clamping mechanism, the output end of the power mechanism is connected to the adjusting mechanism, and the power mechanism is used to drive the adjusting mechanism to rotate so that the adjusting mechanism drives the electrode rod to rise and fall.

[0010] Further technical solution: the adjustment mechanism includes a plurality of movable holes opened on the side of the clamping tube. In the present embodiment, there are four movable holes, and the plurality of movable holes are evenly distributed around the axis of the clamping tube. The bottoms of the plurality of movable holes are hinged with a rotating plate, one end of the rotating plate is fixedly connected to a mounting frame, and the interior of the mounting frame is rotatably connected to a driving wheel, the side of the driving wheel contacts the surface of the electrode rod, and the surface of the driving wheel is provided with a fox groove adapted to the diameter of the electrode rod;

[0011] In order to increase the friction between the driving wheel and the electrode rod, the interior of the fox groove is provided with anti-skid grooves, and the surface of the electrode rod is also provided with anti-skid grooves.

[0012] Further technical solution: the clamping mechanism includes a fixed tube fixedly connected to the clamping tube through a fixed column, the fixed tube is a hollow structure with an opening at the bottom, a plurality of guide arc blocks are slidably connected inside the fixed tube, the plurality of guide arc blocks are evenly distributed around the axis of the fixed tube, a side of the guide arc block close to the clamping tube is fixedly connected to an extrusion plate, one end of the extrusion plate extending out of the fixed tube abuts against the side of the rotating plate, a lifting ring is also slidably connected inside the fixed tube, a plurality of extrusion arc blocks are fixedly connected to the side of the lifting ring close to the guide arc block, the opposite sides of the extrusion arc block and the guide arc block are respectively provided with complementary inclined surfaces, the inclined surfaces of the extrusion arc block and the inclined surfaces of the guide arc block are slidably matched;

[0013] The clamping mechanism also includes a driving mechanism, which is installed on the fixed pipe. The output end of the driving mechanism is connected to the lifting ring, and the driving mechanism is used to drive the lifting ring to move up and down.

[0014] Further technical solution: the driving mechanism includes a plurality of screws rotatably connected to a fixed tube, all of the screws are threadedly connected to a lifting ring, an inner gear ring is rotatably connected to the fixed tube, one end of a plurality of the screws are fixedly connected to a second gear, a plurality of the second gears are meshingly connected to the inner gear ring, a third servo motor is fixedly mounted on the fixed tube, an output shaft of the third servo motor is fixedly connected to a first gear, an outer gear ring is fixedly connected to a side of the inner gear ring, and the outer gear ring is meshingly connected to the first gear.

[0015] Further technical solution: The power mechanism includes multiple transmission components, each of which is connected to one end of two adjacent drive wheels. The transmission component is used to ensure the synchronous and unidirectional rotation of the two adjacent drive wheels. A mounting plate is fixedly connected to the fixed tube, and a second servo motor is fixedly mounted on the mounting plate. A transmission pair is connected between the output shaft of the second servo motor and a transmission component.

[0016] Further technical solution: The transmission assembly includes a first transmission rod and a second transmission rod, and the ends of the first transmission rod and the second transmission rod that are away from each other are respectively connected to one end of two adjacent driving wheels, and the eccentric positions of the opposite ends of the first transmission rod and the second transmission rod are each provided with a driving hole, and a transmission bent rod is inserted between the two driving holes, and the transmission bent rod can slide and rotate in the driving hole.

[0017] Further technical solution: The lifting mechanism includes two lifting frames, and the two lifting frames are relatively installed on the vacuum consumable arc furnace. The two lifting frames are slidably connected to the inside with lifting blocks, and the opposite sides of the two lifting blocks are fixedly connected to the same fixed ring through a connecting rod. The clamping tube is fixedly connected to the fixed ring, and the two lifting frames are rotatably connected to the inside with a screw rod. The two screw rods are respectively threadedly connected to the two lifting blocks. The two lifting frames are fixedly installed with a first servo motor, and the output shafts of the two first servo motors are respectively fixedly connected to one end of the screw rod.

[0018] Further technical solution: The connecting structure includes a positioning groove opened at one end of the electrode rod, the axis of the positioning groove coincides with the axis of the electrode rod, a plurality of limiting grooves are opened on the side of the positioning groove, a plurality of insertion holes are opened on the electrode rod and are respectively connected to the plurality of limiting grooves, a positioning column adapted to the positioning groove is fixedly connected to the other end of the electrode rod, and a plurality of limiting plates adapted to the insertion holes are fixedly connected to the side of the positioning column.

[0019] Further technical solution: The side of the fixing ring is fixedly connected to the limiting tube through a fixing rod, the limiting tube is located above the clamping tube, and the axis of the limiting tube coincides with the axis of the clamping tube, and the inner diameter of the limiting tube is the same as the diameter of the electrode rod.

[0020] Further technical solution: A Hall sensor is provided at the conductive tile, and the Hall sensor is electrically connected to the two first servo motors;

[0021] When feeding the electrode rod, the first servo motor drives the screw to rotate continuously, and the screw drives the lifting block and the clamping tube to descend, so that the electrode rod continues to descend. When the bottom end of the electrode rod descends to a sufficient height, an arc will be generated at the bottom end of the electrode rod, and then the metal will be melted. At this time, the Hall sensor detects the current passing through the conductive tile, and the Hall sensor shuts down the first servo motor. When one end of the electrode rod is self-consumed, the distance between the bottom end of the electrode rod and the metal in the furnace increases, and the bottom end of the electrode rod no longer generates an arc, that is, there is no current flowing in the electrode rod. Then, the first servo motor continues to drive the electrode rod to descend until it generates current again. Such a cycle can realize automatic feeding of the electrode rod without the use of program electronic control, thereby making the feeding accuracy of the electrode rod higher.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can connect the two ends of two electrode rods by setting a connection structure. When the length of the electrode rod is consumed and is not enough to continue to serve as an electrode, one end of another electrode rod is connected to the top of the electrode rod, and then the bottom end of the electrode rod is re-extended into the vacuum consumable arc furnace, so that the remaining electrode rod can continue to serve as an electrode, thereby avoiding unnecessary waste;

[0024] 2. The present invention provides an adjustment mechanism. After the electrode rod is inserted into the clamping tube, the adjustment mechanism can clamp the electrode rod on the clamping tube, and then the lifting mechanism can feed the electrode rod; when the remaining electrode rods are spliced, the adjustment mechanism can also drive the electrode rod to descend, so that the electrode rod is reinserted into the furnace body, thereby completing the handover of the electrode rods;

[0025] 3. The present invention provides a limiting tube. When connecting two electrode rods, another new electrode rod is first inserted into the limiting tube, and then the two electrode rods are connected, thereby avoiding the misalignment of the two electrode rods during the connection process, thereby making the connection process of the two electrode rods smoother;

[0026] 4. The present invention sets a Hall sensor. When an arc is generated at the bottom end of the electrode rod, the Hall sensor will detect the current passing through the conductive tile, and the Hall sensor will shut down the first servo motor. When one end of the electrode rod is self-consumed, the distance between the bottom end of the electrode rod and the metal in the furnace increases, and the bottom end of the electrode rod no longer generates an arc, that is, no current flows in the electrode rod. The first servo motor continues to drive the electrode rod to descend until it generates current again. Such a cycle can realize automatic feeding of the electrode rod, thereby making the feeding accuracy of the electrode rod higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall front view structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the clamping mechanism and the power mechanism in the present invention.

[0030] Figure 4 It is a structural schematic diagram of the cross section of the clamping mechanism in the present invention.

[0031] Figure 5 It is a structural schematic diagram of the adjustment mechanism in the present invention.

[0032] Figure 6 It is a schematic structural diagram of the top of the electrode rod in the present invention.

[0033] Figure 7 It is a schematic structural diagram of the bottom of the electrode rod in the present invention.

[0034] In the attached drawings: 1, limit tube; 2, fixed rod; 3, lifting mechanism; 31, first servo motor; 32, screw rod; 33, lifting frame; 34, lifting block; 35, connecting rod; 36, fixing ring; 4, clamping tube; 5, adjustment mechanism; 51, movable hole; 52, driving wheel; 53, mounting frame; 54, rotating plate; 6, clamping mechanism; 61, first gear; 62, outer gear ring; 63, third servo motor; 64, second gear; 65, inner gear ring; 66, Fixed tube; 67, extrusion plate; 68, extrusion arc block; 69, screw; 610, guide arc block; 611, fixed column; 612, lifting ring; 7, power mechanism; 71, transmission assembly; 711, first transmission rod; 712, transmission bending rod; 713, second transmission rod; 72, transmission pair; 73, second servo motor; 74, mounting plate; 8, electrode rod; 81, insertion hole; 82, limit groove; 83, positioning groove; 85, limit plate; 86, positioning column. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0037] like Figure 1-Figure 7As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention comprises a lifting mechanism 3, the lifting mechanism 3 is installed on the vacuum consumable arc furnace, a clamping tube 4 is fixedly installed at the output end of the lifting mechanism 3, an electrode rod 8 is inserted inside the clamping tube 4, and matching connection structures are respectively provided at both ends of the electrode rod 8, so that another electrode rod 8 can be connected to one end of the electrode rod 8 below it through the connection structure, a conductive tile is provided on the inner side wall of the clamping tube 4, and the conductive tile is electrically connected to an external power supply, and further comprises:

[0038] An adjusting mechanism 5, wherein the adjusting mechanism 5 is mounted on the clamping tube 4, and multiple output ends of the adjusting mechanism 5 are in contact with the surface of the electrode rod 8. The adjusting mechanism 5 is used to clamp the electrode rod 8 and drive the electrode rod 8 to rise and fall;

[0039] A clamping mechanism 6, wherein the clamping mechanism 6 is mounted on the clamping tube 4, wherein a plurality of output ends of the clamping mechanism 6 are respectively in contact with a plurality of input ends of the adjusting mechanism 5, and the clamping mechanism 6 is used to drive the adjusting mechanism 5 to clamp the electrode rod 8;

[0040] The power mechanism 7 is installed on the clamping mechanism 6. The output end of the power mechanism 7 is connected to the adjusting mechanism 5. The power mechanism 7 is used to drive the adjusting mechanism 5 to rotate, so that the adjusting mechanism 5 drives the electrode rod 8 to rise and fall.

[0041] like Figure 1-Figure 3 and Figure 5 As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention is provided. In this embodiment, the adjusting mechanism 5 includes a plurality of movable holes 51 opened on the side of the clamping tube 4. In this embodiment, there are four movable holes 51, and the plurality of movable holes 51 are evenly distributed around the axis of the clamping tube 4. The bottoms of the plurality of movable holes 51 are hinged with a rotating plate 54, one end of the rotating plate 54 is fixedly connected with a mounting frame 53, and the interior of the mounting frame 53 is rotatably connected with a driving wheel 52, and the side of the driving wheel 52 contacts the surface of the electrode rod 8, and the surface of the driving wheel 52 is provided with a fox groove adapted to the diameter of the electrode rod 8;

[0042] In order to increase the friction between the driving wheel 52 and the electrode rod 8, the interior of the fox groove is provided with anti-skid grooves, and the surface of the electrode rod 8 is also provided with anti-skid grooves.

[0043] like Figure 1-Figure 4As shown, an electrode clamping device for a vacuum consumable electric arc furnace provided by the present invention is provided. In this embodiment, the clamping mechanism 6 includes a fixed tube 66 fixedly connected to the clamping tube 4 through a fixed column 611. The fixed tube 66 is a hollow structure with an opening at the bottom. A plurality of guide arc blocks 610 are slidably connected inside the fixed tube 66. The plurality of guide arc blocks 610 are evenly distributed around the axis of the fixed tube 66. A squeezing plate 67 is fixedly connected to the side of the guide arc block 610 close to the clamping tube 4. One end of the squeezing plate 67 extends out of the fixed tube 66 and abuts against the side of the rotating plate 54. A lifting ring 612 is also slidably connected inside the fixed tube 66. A plurality of squeezing arc blocks 68 are fixedly connected to the side of the lifting ring 612 close to the guide arc block 610. The sides opposite to each other of the squeezing arc block 68 and the guide arc block 610 are respectively provided with complementary inclined surfaces. The inclined surfaces of the squeezing arc block 68 and the inclined surfaces of the guide arc block 610 are slidably matched.

[0044] The clamping mechanism 6 also includes a driving mechanism, which is installed on the fixed tube 66 . The output end of the driving mechanism is connected to the lifting ring 612 , and the driving mechanism is used to drive the lifting ring 612 to move up and down.

[0045] When the driving mechanism drives the lifting ring 612 to rise, the lifting ring 612 squeezes the guide arc block 610 through the squeezing arc block 68, and then drives the guide arc block 610 to move horizontally. The guide arc block 610 squeezes the rotating plate 54 through the squeezing plate 67, thereby driving the rotating plate 54 to rotate toward the inside of the clamping tube 4. The rotating plate 54 drives the driving wheel 52 to rotate through the mounting frame 53, and multiple driving wheels 52 clamp the electrode rod 8.

[0046] like Figure 1-Figure 4 As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention, in this embodiment, the driving mechanism includes a plurality of screws 69 rotatably connected to a fixed tube 66, all of the screws 69 are threadedly connected to a lifting ring 612, an inner gear ring 65 is rotatably connected to the fixed tube 66, one end of the plurality of screws 69 are fixedly connected to a second gear 64, and the plurality of second gears 64 are meshingly connected to the inner gear ring 65, a third servo motor 63 is fixedly mounted on the fixed tube 66, an output shaft of the third servo motor 63 is fixedly connected to a first gear 61, an outer gear ring 62 is fixedly connected to the side of the inner gear ring 65, and the outer gear ring 62 is meshingly connected to the first gear 61.

[0047] The third servo motor 63 drives the first gear 61 to rotate, the first gear 61 drives the outer gear ring 62 and the inner gear ring 65 to rotate, the inner gear ring 65 drives all the second gears 64 to rotate, the second gear 64 drives the screw 69 to rotate, and the screw 69 drives the lifting ring 612 to rise and fall.

[0048] like Figure 1-Figure 5 As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention is provided. In this embodiment, the power mechanism 7 includes a plurality of transmission components 71, each of which is connected to one end of two adjacent driving wheels 52, and the transmission component 71 is used to ensure that the two adjacent driving wheels 52 rotate synchronously and in the same direction. A mounting plate 74 is fixedly connected to the fixed tube 66, and a second servo motor 73 is fixedly installed on the mounting plate 74. A transmission pair 72 is connected between the output shaft of the second servo motor 73 and a transmission component 71.

[0049] The second servo motor 73 drives a transmission assembly 71 to rotate through a transmission pair 72, and the transmission assembly 71 drives two drive wheels 52 connected thereto to rotate. Through other transmission assemblies 71, the second servo motor 73 can drive all the drive wheels 52 to rotate synchronously and in the same direction.

[0050] like Figure 3-Figure 5 As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention is provided. In this embodiment, the transmission assembly 71 includes a first transmission rod 711 and a second transmission rod 713. The ends of the first transmission rod 711 and the second transmission rod 713 that are away from each other are respectively connected to one end of two adjacent driving wheels 52. The eccentric positions of the opposite ends of the first transmission rod 711 and the second transmission rod 713 are both provided with driving holes, and a transmission bent rod 712 is inserted between the two driving holes. The transmission bent rod 712 can slide and rotate in the driving holes.

[0051] One end of the transmission pair 72 is connected to the first transmission rod 711 or the second transmission rod 713 . When one of the first transmission rods 711 rotates, the first transmission rod 711 drives the second transmission rod 713 to rotate via the transmission bent rod 712 .

[0052] like Figure 1-Figure 2 As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention is provided. In this embodiment, the lifting mechanism 3 includes two lifting frames 33, and the two lifting frames 33 are relatively installed on the vacuum consumable arc furnace. The interiors of the two lifting frames 33 are slidably connected with lifting blocks 34, and the opposite sides of the two lifting blocks 34 are fixedly connected to the same fixing ring 36 through a connecting rod 35. The clamping tube 4 is fixedly connected to the fixing ring 36. The interiors of the two lifting frames 33 are rotatably connected with screw rods 32, and the two screw rods 32 are respectively threadedly connected to the two lifting blocks 34. The two lifting frames 33 are fixedly installed with first servo motors 31, and the output shafts of the two first servo motors 31 are respectively fixedly connected to one end of the screw rod 32.

[0053] like Figure 1-Figure 3 and Figure 5-Figure 7As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention is provided. In this embodiment, the connection structure includes a positioning groove 83 provided at one end of an electrode rod 8, the axis of the positioning groove 83 coincides with the axis of the electrode rod 8, a plurality of limiting grooves 82 are provided on the side of the positioning groove 83, a plurality of insertion holes 81 respectively connected to the plurality of limiting grooves 82 are provided on the electrode rod 8, a positioning column 86 matched with the positioning groove 83 is fixedly connected to the other end of the electrode rod 8, and a plurality of limiting plates 85 matched with the insertion holes 81 are fixedly connected to the side of the positioning column 86.

[0054] When the remaining length of one electrode rod 8 is not enough to continue to serve as an electrode, one end of the other electrode rod 8 is connected to the top of the electrode rod 8, that is, the limiting plate 85 at one end of the other electrode rod 8 is extended into the limiting groove 82 from the insertion hole 81 at the top of the electrode rod 8, and the other electrode rod 8 is rotated so that the limiting plate 85 is stuck in the limiting groove 82, and then the adjusting mechanism 5 can be driven to rotate by the power mechanism 7, and the adjusting mechanism 5 drives the electrode rod 8 to descend, so that the bottom end of the electrode rod 8 is extended into the vacuum consumable arc furnace. As the electrode rod 8 is consumed, the connection between the two electrode rods 8 will automatically melt into one, so there is no need to worry about the two electrode rods 8 being detached.

[0055] like Figure 1-Figure 2 As shown, an electrode clamping device for a vacuum consumable arc furnace provided by the present invention is provided. In order to avoid misalignment of the two electrode rods 8 during the connection process, in this embodiment, the side of the fixing ring 36 is fixedly connected to the limiting tube 1 through the fixing rod 2. The limiting tube 1 is located above the clamping tube 4, and the axis of the limiting tube 1 coincides with the axis of the clamping tube 4. The inner diameter of the limiting tube 1 is the same as the diameter of the electrode rod 8.

[0056] The present invention provides an electrode clamping device for a vacuum consumable arc furnace. In order to realize automatic feeding of the electrode rod 8, in this embodiment, a Hall sensor is provided at the conductive tile, and the Hall sensor is electrically connected to the two first servo motors 31;

[0057] When feeding the electrode rod 8, the first servo motor 31 drives the screw rod 32 to rotate continuously, and the screw rod 32 drives the lifting block 34 and the clamping tube 4 to descend, so that the electrode rod 8 continues to descend. When the bottom end of the electrode rod 8 descends to a sufficient height, an arc will be generated at the bottom end of the electrode rod 8, and then the metal will be melted. At this time, the Hall sensor detects the current passing through the conductive tile, and the Hall sensor shuts down the first servo motor 31. After one end of the electrode rod 8 is self-consumed, the distance between the bottom end of the electrode rod 8 and the metal in the furnace increases, and the bottom end of the electrode rod 8 no longer generates an arc, that is, there is no current flowing in the electrode rod 8. Then, the first servo motor 31 continues to drive the electrode rod 8 to descend until it generates current again. Such a cycle can realize automatic feeding of the electrode rod 8 without using program electronic control, thereby making the feeding accuracy of the electrode rod 8 higher.

[0058] Working principle:

[0059] Before use, first lift the lifting block 34 to the top of the lifting frame 33, then insert the electrode rod 8 into the clamping tube 4, start the third servo motor 63, the third servo motor 63 drives the first gear 61 to rotate, the first gear 61 drives the outer gear ring 62 and the inner gear ring 65 to rotate, the inner gear ring 65 drives all the second gears 64 to rotate, the second gear 64 drives the screw 69 to rotate, the screw 69 drives the lifting ring 612 to rise, the lifting ring 612 squeezes the guide arc block 610 through the squeezing arc block 68, and then drives the guide arc block 610 to move horizontally, the guide arc block 610 squeezes the rotating plate 54 through the squeezing plate 67, thereby driving the rotating plate 54 to rotate toward the inside of the clamping tube 4, the rotating plate 54 drives the driving wheel 52 to rotate through the mounting frame 53, and the multiple driving wheels 52 clamp the electrode rod 8, and then the first servo motor 31 drives the lifting block 34 and the electrode rod 8 to descend through the screw rod 32, and the electrode rod 8 can be fed;

[0060] When the length of the electrode rod 8 is too long to continue to serve as an electrode, one end of another electrode rod 8 is connected to the top of the electrode rod 8, and then the second servo motor 73 drives the driving wheel 52 to rotate through the transmission assembly 71, and the driving wheel 52 drives the electrode rod 8 to descend, so that the bottom end of the electrode rod 8 is re-extended into the vacuum consumable arc furnace, so that it can continue to serve as an electrode, avoiding unnecessary waste.

[0061] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electrode clamping device for a vacuum consumable arc furnace, comprising a lifting mechanism (3), characterized in that: A clamping tube (4) is fixedly mounted on the output end of the lifting mechanism (3), an electrode rod (8) is inserted into the interior of the clamping tube (4), matching connection structures are provided at both ends of the electrode rod (8), a conductive tile is provided on the inner side wall of the clamping tube (4), and the conductive tile is electrically connected to an external power source, and further comprises: an adjusting mechanism (5), the adjusting mechanism (5) being mounted on the clamping tube (4), a plurality of output ends of the adjusting mechanism (5) being in contact with the surface of the electrode rod (8), the adjusting mechanism (5) being used to clamp the electrode rod (8) and drive the electrode rod (8) to rise and fall; a clamping mechanism (6), the clamping mechanism (6) being mounted on the clamping tube (4), the plurality of output ends of the clamping mechanism (6) being respectively in contact with the plurality of input ends of the adjusting mechanism (5), the clamping mechanism (6) being used to drive the adjusting mechanism (5) to clamp the electrode rod (8); A power mechanism (7), the power mechanism (7) being mounted on the clamping mechanism (6), the output end of the power mechanism (7) being connected to the adjusting mechanism (5), and the power mechanism (7) being used to drive the adjusting mechanism (5) to rotate; The adjustment mechanism (5) comprises a plurality of movable holes (51) formed on the side of the clamping tube (4), the plurality of movable holes (51) being evenly distributed around the axis of the clamping tube (4), the bottoms of the plurality of movable holes (51) being hinged with a rotating plate (54), one end of the rotating plate (54) being fixedly connected to a mounting frame (53), the interior of the mounting frame (53) being rotatably connected to a driving wheel (52), the side of the driving wheel (52) being in contact with the surface of the electrode rod (8), and the surface of the driving wheel (52) being provided with a fox groove matching the diameter of the electrode rod (8), the interior of the fox groove being provided with anti-slip grooves, and the surface of the electrode rod (8) being provided with anti-slip grooves; The clamping mechanism (6) comprises a fixing tube (66) fixedly connected to the clamping tube (4) via a fixing column (611); the fixing tube (66) is a hollow structure with an open bottom; a plurality of guide arc blocks (610) are slidably connected to the interior of the fixing tube (66); the plurality of guide arc blocks (610) are evenly distributed around the axis of the fixing tube (66); a side of the guide arc block (610) close to the clamping tube (4) is fixedly connected to an extrusion plate (67); the extrusion plate (67) is 67) one end of the extending fixed tube (66) abuts against the side surface of the rotating plate (54), the interior of the fixed tube (66) is also slidably connected to a lifting ring (612), a side surface of the lifting ring (612) close to the guide arc block (610) is fixedly connected to a plurality of extrusion arc blocks (68), the extrusion arc blocks (68) and the guide arc blocks (610) having opposite sides respectively provided with complementary inclined surfaces, the inclined surfaces of the extrusion arc blocks (68) and the inclined surfaces of the guide arc blocks (610) being slidably matched; The clamping mechanism (6) further comprises a driving mechanism, the driving mechanism being mounted on the fixed tube (66), the output end of the driving mechanism being connected to the lifting ring (612), the driving mechanism being used to drive the lifting ring (612) to move up and down; The driving mechanism comprises a plurality of screw rods (69) rotatably connected to a fixed tube (66), all of the screw rods (69) are threadedly connected to a lifting ring (612), an inner gear ring (65) is rotatably connected to the fixed tube (66), one end of each of the plurality of screw rods (69) is fixedly connected to a second gear (64), and each of the plurality of second gears (64) is meshingly connected to the inner gear ring (65), a third servo motor (63) is fixedly mounted on the fixed tube (66), an output shaft of the third servo motor (63) is fixedly connected to a first gear (61), a side surface of the inner gear ring (65) is fixedly connected to an outer gear ring (62), and the outer gear ring (62) is meshingly connected to the first gear (61).

2. The electrode clamping device for a vacuum consumable arc furnace according to claim 1, characterized in that: The power mechanism (7) comprises a plurality of transmission assemblies (71), each of the transmission assemblies (71) being connected to one end of two adjacent drive wheels (52), a mounting plate (74) being fixedly connected to the fixed tube (66), a second servo motor (73) being fixedly mounted on the mounting plate (74), and a transmission pair (72) being connected between an output shaft of the second servo motor (73) and a transmission assembly (71).

3. The electrode clamping device for a vacuum consumable arc furnace according to claim 2, characterized in that: The transmission assembly (71) comprises a first transmission rod (711) and a second transmission rod (713); the ends of the first transmission rod (711) and the second transmission rod (713) that are separated from each other are respectively connected to one end of two adjacent driving wheels (52); driving holes are provided at eccentric positions of the opposite ends of the first transmission rod (711) and the second transmission rod (713); and a transmission bent rod (712) is inserted between the two driving holes.

4. The electrode clamping device for a vacuum consumable arc furnace according to claim 1, characterized in that: The lifting mechanism (3) comprises two lifting frames (33), the two lifting frames (33) are relatively mounted on the vacuum consumable arc furnace, the interiors of the two lifting frames (33) are slidably connected with lifting blocks (34), the opposite sides of the two lifting blocks (34) are fixedly connected to the same fixing ring (36) via connecting rods (35), the clamping tube (4) is fixedly connected to the fixing ring (36), the interiors of the two lifting frames (33) are rotatably connected with screw rods (32), the two screw rods (32) are respectively threadedly connected to the two lifting blocks (34), the two lifting frames (33) are fixedly mounted with first servo motors (31), and the output shafts of the two first servo motors (31) are respectively fixedly connected to one end of the screw rod (32).

5. The electrode clamping device for a vacuum consumable arc furnace according to claim 1, characterized in that: The connection structure comprises a positioning groove (83) formed at one end of the electrode rod (8), the axis of the positioning groove (83) coincides with the axis of the electrode rod (8), a plurality of limiting grooves (82) are formed on the side of the positioning groove (83), a plurality of insertion holes (81) respectively connected to the plurality of limiting grooves (82) are formed on the electrode rod (8), a positioning column (86) matched with the positioning groove (83) is fixedly connected to the other end of the electrode rod (8), and a plurality of limiting plates (85) matched with the insertion holes (81) are fixedly connected to the side of the positioning column (86).

6. The electrode clamping device for a vacuum consumable arc furnace according to claim 4, characterized in that: The side surface of the fixing ring (36) is fixedly connected to the limiting tube (1) via a fixing rod (2); the limiting tube (1) is located above the clamping tube (4); the axis of the limiting tube (1) coincides with the axis of the clamping tube (4); and the inner diameter of the limiting tube (1) is the same as the diameter of the electrode rod (8).

7. The electrode clamping device for a vacuum consumable arc furnace according to any one of claims 1 to 6, characterized in that: A Hall sensor is provided at the conductive tile, and the Hall sensor is electrically connected to both first servo motors (31).

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