CN107604174B

CN107604174B - Electrode transmission system of vacuum cooling crucible skull furnace

Info

Publication number: CN107604174B
Application number: CN201710993105.5A
Authority: CN
Inventors: 张增海; 张哲魁; 马海玲; 刘君
Original assignee: Shenyang Vacuum Technology Institute Co ltd
Current assignee: Shenyang Vacuum Technology Institute Co ltd
Priority date: 2017-10-23
Filing date: 2017-10-23
Publication date: 2020-08-25
Anticipated expiration: 2037-10-23
Also published as: CN107604174A

Abstract

An electrode transmission system of a vacuum cooling crucible skull furnace belongs to the technical field of vacuum metallurgical equipment, and particularly relates to an electrode transmission system of a vacuum cooling crucible skull furnace. The invention provides an electrode transmission system of a vacuum cold crucible skull furnace, which is convenient to use and reliable and stable in work. The invention comprises a travelling mechanism, a lifting platform, a portal frame, a reverse-ejection quick lifting mechanism, an electrode rod, a dynamic seal seat, a lifting power unit of the lifting platform and an electrode chamber lifting mechanism.

Description

Electrode transmission system of vacuum cooling crucible skull furnace

Technical Field

The invention belongs to the technical field of vacuum metallurgical equipment, and particularly relates to an electrode transmission system of a vacuum cold crucible skull furnace.

Background

The electrode transmission system of vacuum crucible skull furnace is characterized by that it utilizes the smelting condition of vacuum consumable electrode arc furnace, and utilizes the prefabricated consumable electrode with required diameter and length (remelting) to make quick melting in water-cooled copper crucible, after the melting quantity is reached, the crucible is tilted, and the liquid titanium can be injected into the casting mould fixed on the centrifugal disk (centrifugal casting or static casting), so that various castings with complete form and clear outline can be obtained.

The furnace body structure form of the skull furnace determines the furnace type of the skull furnace, the size of the furnace body depends on the weight of the solution, the size of a crucible, the diameter of a centrifugal disc and the height of a casting mold, and the skull furnace can be divided into a horizontal type and a vertical type according to the existing skull furnace structure form.

Horizontal furnaces are one of the most common furnace types used in the production of titanium castings. The horizontal skull-condensing furnace has the advantages of compact structure and high strength, but the height space in the furnace chamber of the horizontal furnace is limited, so that the height of a casting mold is limited, if the height is increased, the diameter is inevitably increased, and the furnace body is enlarged, so that the maximum domestic horizontal furnace is only 1000Kg at present.

The vertical furnace is a skull furnace adopting a vertical square furnace body. The vertical furnace improves the pouring height, so that the relative position of the centrifugal disc and the crucible is more reasonable, but the furnace body structure of the vertical furnace is easy to deform, and the processing and manufacturing cost is higher. At present, a crucible device of a vertical furnace is arranged on a furnace door trolley and can be moved out of the furnace along with a body, and the structure is supplied with power on one side and needs antimagnetic treatment.

No matter horizontal furnace or vertical furnace, for the large capacity congeals shell furnace, its furnace body size is very big, and structural reliability and expansibility are very low, and because the casting mould quality is very big again, lead to the mode frequency of centrifugal mechanism very little, make the vibration of centrifugal mechanism very big, and centrifugal mechanism and furnace body rigid connection lead to the vibration to pass to the furnace body on, make the vibration of furnace body and electrode bar strong, can't work, so do not have the large-scale congeals shell furnace of reasonable structure yet at present.

Disclosure of Invention

Aiming at the problems, the invention provides the electrode transmission system of the vacuum cold crucible skull furnace, which is convenient to use and reliable and stable in work.

The technical scheme includes that the lifting device comprises a travelling mechanism, a lifting platform, a portal frame, a reverse-ejection quick lifting mechanism, an electrode rod, a movable sealing seat, a lifting power unit of the lifting platform and an electrode chamber lifting mechanism.

As a preferred scheme, the travelling mechanism comprises a motor and two transverse supporting frames, wherein two supporting frames are arranged, and two sides of the lower end of the portal frame are arranged on the supporting frames at two sides; the motor is arranged at the lower part of the portal frame, a driving gear is arranged on an output shaft of the motor, the driving gear is connected with a driven gear below the driving gear through a chain, the driven gear is arranged at the end part of a transverse transmission shaft, two sides of the transverse transmission shaft are connected with the centers of the rear lower end rollers of the support frames at two sides, and the front ends and the middle parts of the support frames at two sides are correspondingly provided with rollers; the roller is arranged on the I-shaped steel on the platform.

As another preferred scheme, the two sides of the lifting platform are provided with sliding blocks, and the door type frame is provided with vertical sliding rails corresponding to the sliding blocks.

As another preferred scheme, the reverse-ejection quick lifting mechanism comprises two cylinders, the two cylinders are arranged on the front side and the rear side of a lifting platform, the cylinders are connected to the lifting platform through cylinder body intermediate flanges, cylinder rods of the cylinders are vertically upward, the upper ends of the cylinder rods are connected with a fixing assembly, and the fixing assembly is connected with the upper ends of electrode rods through downward couplings.

As another preferred scheme, the lifting power unit comprises a servo motor, the servo motor is connected with the upper ends of vertical screw rods on the front side and the rear side of the lifting platform through a corner speed reducer, the lower ends of the screw rods pass through threaded holes in the lifting platform in a rotating mode, and the servo motor and the corner speed reducer are arranged at the upper end of the portal frame.

As another preferred scheme, the electrode chamber lifting mechanism comprises two groups of lifting mechanisms which are respectively arranged on supporting frames on two sides, wherein each lifting mechanism comprises a sleeve, a guide pillar, a Z-shaped bracket, a lifting oil cylinder and a guide key; the guide post is fixed on the support frame, and the side wall of the guide post is provided with a vertical guide groove; the guide key corresponding to the guide groove is welded on the sleeve, the upper end of the sleeve is connected with the lifting oil cylinder, the side end of the sleeve is connected with the upper end of the Z-shaped bracket, and the lower end of the Z-shaped bracket is connected with the side wall of the electrode chamber.

Secondly, the electrode transmission system also comprises a copper bar quick locking mechanism and an in-place locking device, wherein the copper bar quick locking mechanism is arranged at an in-place position in front of the portal frame, the copper bar quick locking mechanism comprises a movable pressing plate, a vertical copper bar support, a transverse pressing oil cylinder and a connecting copper bar, the pressing oil cylinder is fixed at the upper end of the copper bar support, a push rod is arranged at the front end part of a cylinder rod of the pressing oil cylinder, the push rod is connected with the movable pressing plate, a transition copper bar is arranged in front of the movable pressing plate, the connecting copper bar is arranged on the side of the portal frame, the positions of the movable pressing plate and the transition copper bar are arranged corresponding to the in-place position in front of the connecting; the connecting copper bar is connected with the lower end of the cathode cable, the upper end of the cathode cable is connected with a conductive copper bar for supplying power to the electrode rod, and the conductive copper bar is arranged at the upper part of the electrode rod; the transition copper bar is arranged at the upper end of the copper bar bracket;

the locking device that targets in place is including setting up the vertical locking hydro-cylinder on the platform and setting up the mouth font locking frame on the carriage lateral wall, mouth font locking frame, and preceding terminal surface middle part is provided with the U-shaped notch under the mouth font locking frame, and the upper end extension bar setting of locking hydro-cylinder is provided with the discoid pressure head with U-shaped notch up end matched with on the U-shaped notch removal route in U-shaped notch the place ahead, the upper end extension bar upper end of locking hydro-cylinder.

In addition, the upper end of the electrode chamber is provided with an observation window, a camera and a pressing block assembly capable of pressing the movable sealing seat on the upper port of the electrode chamber.

The invention has the beneficial effects.

The electrode transmission system has simple structure, high space utilization rate and good reliability, and can be used for clamping large-tonnage electrodes; the automation degree is high, the maintenance is convenient, and the device can be used for a long time.

The electrode rod can move into the upper furnace body through the dynamic seal seat, the dynamic seal seat is connected with the electrode chamber and does not move, and the electrode rod can move up and down after penetrating through the dynamic seal seat.

The electrode transmission system adopts a frame structure, and the movable frame can drive the electrode rod to move on the platform, so that the reliability is high.

The invention has high space utilization rate and can centrifugally pour large titanium castings.

The invention has the advantages of convenient use, reliable and stable structure, modularization, convenient maintenance and long-term use.

Drawings

FIG. 1 is a schematic view of the structure of the vacuum consumable electrode arc skull furnace of the present invention. FIG. 2 is a left side view of the vacuum consumable electrode arc skull furnace of the present invention. FIG. 3 is a right side view of the vacuum consumable electrode arc skull furnace of the present invention. FIG. 4 is a front view of the vacuum consumable electrode arc skull furnace of the present invention. FIG. 5 is a top view of the vacuum consumable electrode arc skull furnace of the present invention. FIG. 6 is a schematic structural diagram of the furnace system of the present invention. FIG. 7 is a rear view of the furnace system of the present invention. FIG. 8 is a right side view of the furnace system of the present invention. FIG. 9 is a plan view of the furnace system of the present invention. Figure 10 is a front view of the vacuum system of the present invention. Figure 11 is a top view of the vacuum system of the present invention. Figure 12 is a left side view of the vacuum system of the present invention. FIG. 13 is a schematic view of the electrode drive system of the present invention. Figure 14 is a front view of the electrode actuator system of the present invention. Figure 15 is a side view of the electrode actuator system of the present invention. Figure 16 is a top view of the electrode actuator system of the present invention. Fig. 17 is a schematic structural view of the electrode chamber lifting mechanism of the invention. Fig. 18 is a schematic structural view of the traveling mechanism of the present invention. Fig. 19 is an enlarged view of a portion a of fig. 1. Fig. 20 is an enlarged view of a portion B of fig. 2. Fig. 21 is an enlarged view of a portion C of fig. 3. Fig. 22 is an enlarged view of a portion D of fig. 6. Fig. 23 is an enlarged view of a portion F of fig. 6. Fig. 24 is an enlarged view of a portion E of fig. 13. Fig. 25 is an enlarged view of a portion G of fig. 13.

In the figure, 1, a mould transmission trolley; 2. a flower disc; 3. a mold; 4. an upper furnace door; 5. an upper furnace door transmission mechanism; 6. a first cooling water supply water path; 7. a platform; 8. a camera; 9. rapidly lifting the cylinder; 10. an electrode drive system; 11. lifting the lead screw; 12. an electrode rod; 13. a guide wheel; 14. a guide post; 15. a transition copper bar; 16. a cathode cable; 17. a servo motor; 18. a door frame; 19. a dynamic seal seat; 20. a transition copper bar; 21. an electrode chamber; 22. a copper bar bracket; 23. a roller; 24. i-shaped steel; 25. smelting a crucible; 26. a pouring cup; 27. a turning shaft; 28. a crucible turnover system; 29. a hydraulic cylinder; 30. a lower furnace door transmission mechanism; 31. a lower furnace door; 32. a vacuum system; 33. a furnace body system; 34. a second cooling water supply water path; 35. an upper furnace body; 36. a lower furnace body; 37. anode copper bar; 38. a centrifugal pan; 39. a centrifugal system; 40. a driven pulley; 41. a centrifugal main shaft; 42. a bellows; 43. a transmission belt; 44. a base plate; 45. a driving pulley; 46. a rear oven door; 47. a drive shaft; 48. a centrifugal fixing seat; 49. a transmission shaft fixing seat; 50. a coupling; 51. a motor connecting disc; 52. a motor; 53. a lower electric hoist; 54. an upper cylindrical roller bearing; 55. a thrust ball bearing; 56. a lower cylindrical roller bearing; 57. an upper thrust oil cylinder; 58. a lower thrust cylinder; 59. a lower roller; 60. an upper transmission base; 61. lifting the oil cylinder; 62. powering on the electric hoist; 63. lower I-shaped steel; 64. a chain; 65. a motor; 66. an oil cylinder; 67. a fixing plate; 68. a movable plate; 69. an observation window; 70. a briquetting assembly; 71. a handle bolt; 72. a pneumatic flapper valve; 73. a main pipeline; 74. a dust removal tank; 75. a vacuum gauge; 76. locking the oil cylinder; 77. a sleeve; 78. a copper bar bracket; 79. a drive shaft; 80. connecting the copper bars; 81. a corner speed reducer; 83. a fixing assembly; 84. a guide upright post; 85. a lifting platform; 86. a support frame; 87. a diverter valve; 88. a slide rail; 89. a slider; 90. a pressing oil cylinder; 91. moving the pressing plate; 92. a lift cylinder; 93. a guide post; 94. a guide key; 95. a transverse transmission shaft; 96. mounting I-shaped steel; 97. a cylinder bearing plate; 99. connecting the connecting rod; 100. a guide post; 101. an upper clamping block; 102. a lower clamping block; 103. a rotating wheel; 104. a crank; 105. an upper connecting block; 106. a lower connecting block; 107. a vertical stud; 108. a T-shaped connector; 109. locking the oil cylinder; 110. a disc-shaped pressure head; 111. a U-shaped notch; 112. a square locking frame; 113. a water-cooling box; 114. and (4) deflating the valve.

Detailed Description

As shown in the figure, the invention can be applied to a vacuum consumable electrode arc skull furnace, the vacuum consumable electrode arc skull furnace comprises a furnace body system, an electrode transmission system, a crucible overturning system, a centrifugal system, a vacuum system, a mould transmission trolley and a platform, and the furnace body system and the platform are integrally connected together;

the crucible overturning system is arranged on the upper furnace body, the lower end of the upper furnace body is connected with the upper end of the lower furnace body in a handle mode, and the upper end of the upper furnace body is provided with an electrode chamber;

the electrode transmission system is movably arranged on the platform through a track; the electrode transmission system is arranged above the electrode chamber;

the centrifugal system is arranged at the lower end of the lower furnace body, and the vacuum system is arranged outside the furnace body system; the inlet of the vacuum system is connected with the vacuum-pumping port of the furnace body system,

the mould transmission trolley is provided with a flower disc which can transmit the mould to a centrifugal disc of a centrifugal system.

The furnace body system of the vacuum consumable electrode electric arc skull furnace comprises an upper furnace body and a lower furnace body, so that materials and space can be saved, and the structural strength is improved; the manufacturing cost is reduced, and the transportation is convenient; the length of the turnover shaft is reduced, and the stability of the turnover system is improved.

The vacuum consumable electrode arc skull furnace has high space utilization rate, and can be used for centrifugally pouring large titanium castings.

The vacuum consumable electrode arc skull furnace is convenient to use, reliable and stable in structure, modularized, convenient to maintain and capable of being used for a long time.

The platform is divided into an upper layer and a lower layer, the electrode transmission system and the upper furnace body are arranged on the upper layer of the platform, the lower furnace body is arranged on the lower layer of the platform, a first cooling water supply water channel is arranged on the upper layer of the platform, and a second cooling water supply water channel is arranged on the lower layer of the platform; a water supply port of the first cooling water supply waterway is connected with a cooling water supply port of the electrode rod, a cooling water supply port of the upper furnace body and a cooling water supply port of the upper furnace door; and a water supply port of the second cooling water supply waterway is connected with a cooling water supply port of the rear furnace door, a cooling water supply port of the lower furnace body and a cooling water supply port of the lower furnace door.

The die transmission trolley comprises a lower transmission base, the lower transmission base is arranged on a lower rail through a lower roller, the lower transmission base is connected with a push rod of a transverse lower thrust oil cylinder, a transverse thrust oil cylinder is arranged on the rear side of the upper end of the lower transmission base, a push rod of an upper thrust oil cylinder is connected with an upper transmission base, the upper transmission base is arranged on an upper rail through an upper roller, and the upper rail is arranged on the lower transmission base; lifting oil cylinders are arranged on two sides of the upper end of the upper transmission base, and the upper ends of extension rods on the lifting oil cylinders are provided with the flower disc; the distance between the lifting oil cylinders on the two sides is larger than the diameter of the centrifugal disc. The lower thrust oil cylinder pushes the lower transmission base to be close to the lower furnace body, the upper thrust oil cylinder pushes the upper transmission base to drive the flower disc and the mold to enter the lower furnace body, and the mold is arranged on the flower disc; after the flower disc reaches the upper part of the centrifugal disc, the extension rod of the lifting oil cylinder retracts, the flower disc and the mold fall on the centrifugal disc together, and the upper thrust oil cylinder pulls out the upper transmission base.

The front end of the upper furnace body is provided with an upper furnace door and an upper furnace door transmission mechanism, the front end of the lower furnace body is provided with a lower furnace door and a lower furnace door transmission mechanism, and the rear lower end of the lower furnace body is provided with a rear furnace door; the upper furnace body adopts a double-layer water-cooling U-shaped structure and is connected with the lower furnace body in a handle way; the lower furnace body adopts a local water-cooling U-shaped structure and is fixed with the ground; the electrode chamber is connected with the upper furnace body in a handle mode, and the rear furnace door is hinged to the lower furnace body. When the titanium liquid is smelted, the rear furnace door is not locked, and when an accident occurs, the atmospheric flow can automatically release pressure from the rear furnace door, so that the furnace body is prevented from exploding. The furnace body system adopts a double-chamber U-shaped structure, the structure is safe, reliable and stable, the transformation space is large, the expansibility is strong, and the pouring height is improved. The lower furnace body adopts local water cooling, so that the water pressure of the lower furnace body can be reduced, and the structural strength of the lower furnace body is improved; and water leakage of all water-cooled welding openings is prevented from entering the furnace body.

The local water-cooling U-shaped structure comprises a plurality of cuboid water-cooling boxes arranged on the upper part of the outer side of the lower furnace body, and the water-cooling boxes are connected in series or in groups. The bottom of the lower furnace body is not cooled by water, and when titanium liquid flows out and an accident occurs, the titanium liquid and cooling water can be prevented from acting to cause greater danger.

The upper furnace door transmission mechanism comprises an upper electric hoist and transverse I-shaped steel, the upper furnace door is of a transverse cuboid structure, the two upper electric hoists are arranged on two sides of the upper end of the upper furnace door along the length direction of the upper furnace door, the upper end of the upper furnace door is arranged on the upper I-shaped steel through the upper electric hoist, and the upper I-shaped steel is arranged on the platform;

furnace gate drive mechanism includes electric block and horizontal worker's word steel down, and lower furnace gate is horizontal cuboid structure, and electric block is two down, sets up furnace gate upper end both sides down along lower furnace gate length direction, and lower furnace gate upper end is through electric block setting down on the I-steel, and worker's word steel sets up on the platform down.

The electrode transmission system comprises a traveling mechanism, a lifting platform, a portal frame, a reverse-ejection quick lifting mechanism, an electrode rod, a dynamic seal seat, a lifting power unit of the lifting platform, an electrode chamber lifting mechanism, the portal frame is arranged on the traveling mechanism, the lifting platform is arranged on the portal frame, the reverse-ejection quick lifting mechanism is arranged on the lifting platform, the power output end of the reverse-ejection quick lifting mechanism is connected with the upper end of the electrode rod, the dynamic seal seat is arranged above the electrode chamber and corresponds to an upper port of the electrode chamber, the lower end of the electrode rod penetrates through the center of the dynamic seal seat, the lifting power unit is arranged on the platform, and the electrode chamber lifting mechanism is arranged on the portal frame.

The portal frame can be welded by cold-bending closed seamless section bars, has light weight, high strength and uniform stress, avoids generating eccentric distance and can bear large-tonnage electrodes. The upper end of the portal frame is connected with the platform and can be detached in a split mode.

The movable sealing seat can slide up and down on the electrode rod, and is clamped with the upper port of the electrode chamber when in place, so that the sealing and vacuum functions are realized.

The electrode rod can move into the upper furnace body through the movable sealing seat, the movable sealing seat is connected with the electrode chamber and does not move, and the electrode rod can move up and down after penetrating through the movable sealing seat.

The electrode transmission system adopts a frame structure, the movable frame can drive the electrode rod to move on the platform, and the reliability is high.

The travelling mechanism comprises a motor and two transverse supporting frames, and two sides of the lower end of the portal frame are arranged on the two supporting frames; the motor is arranged at the lower part of the portal frame, a driving gear is arranged on an output shaft of the motor, the driving gear is connected with a driven gear below the driving gear through a chain, the driven gear is arranged at the end part of a transverse transmission shaft, two sides of the transverse transmission shaft are connected with the centers of the rear lower end rollers of the support frames at two sides, and the front ends and the middle parts of the support frames at two sides are correspondingly provided with rollers; the roller is arranged on the I-shaped steel on the platform. The portal frame can move on the I-shaped steel rail through the rollers.

The i-steel rail may be welded to the platform.

The walking mechanism adopts motor transmission, and has the advantages of speed regulation, clean energy and stable and reliable motion.

The portal frame can move on the I-shaped steel rail through the rollers, so that the condensed shell in the crucible can be conveniently taken out and put in.

The lifting platform is characterized in that sliding blocks are arranged on two sides of the lifting platform, and vertical sliding rails are arranged on the portal frame corresponding to the sliding blocks.

The reverse-ejection quick lifting mechanism comprises two cylinders, the two cylinders are arranged on the front side and the rear side of the lifting platform, the cylinders are connected to the lifting platform through cylinder body intermediate flanges, a cylinder rod of each cylinder vertically faces upwards, the upper end of the cylinder rod is connected with a fixing assembly, and the fixing assembly is connected with the upper end of an electrode rod through a downward coupling.

The electrode rod quick lifting mechanism adopts a double-cylinder reverse-ejection quick lifting mechanism, and has a compact structure and high space utilization rate.

The lifting power unit comprises a servo motor, the servo motor is connected with the upper ends of vertical screws on the front side and the rear side of the lifting platform through a corner speed reducer, the lower ends of the screws penetrate through threaded holes in the lifting platform in a rotating mode, and the servo motor and the corner speed reducer are arranged on the upper end of the portal frame.

The servo motor drives the lifting platform to do up-and-down speed regulation movement through the lead screw; after smelting is finished, compressed air enables the cylinder rod to rapidly extend out through the reversing valve, and the electrode rod is driven to rapidly lift through the fixing component.

The servo motor can slowly lift the electrode rod through the lead screw.

The electrode chamber lifting mechanism comprises two groups of lifting mechanisms which are respectively arranged on supporting frames on two sides, and each lifting mechanism comprises a sleeve, a guide pillar, a Z-shaped bracket, a lifting oil cylinder and a guide key; the guide post is fixed on the support frame, and the side wall of the guide post is provided with a vertical guide groove; the guide key corresponding to the guide groove is welded on the sleeve, the upper end of the sleeve is connected with the lifting oil cylinder, the side end of the sleeve is connected with the upper end of the Z-shaped bracket, and the lower end of the Z-shaped bracket is connected with the side wall of the electrode chamber. The lever extends out to drive the sleeve to move upwards, and the electrode chamber is lifted.

The electrode transmission system further comprises a copper bar quick locking mechanism and an in-place locking device, the copper bar quick locking mechanism is arranged at the in-place position in front of the portal frame, the copper bar quick locking mechanism comprises a movable pressing plate, a vertical copper bar support, a transverse pressing oil cylinder and a connecting copper bar, the pressing oil cylinder is fixed at the upper end of the copper bar support, a push rod is mounted at the front end of a cylinder rod of the pressing oil cylinder, the push rod is connected with the movable pressing plate, a transition copper bar is arranged in front of the movable pressing plate, a connecting copper bar is arranged on the side of the portal frame, the positions of the movable pressing plate and the transition copper bar are arranged corresponding to the in-place position in front of the connecting; the connecting copper bar is connected with the lower end of a cathode cable (a water-cooled cable can be adopted), the upper end of the cathode cable is connected with a conductive copper bar for supplying power to the electrode rod, and the conductive copper bar is arranged at the upper part of the electrode rod; the transition copper bar is arranged at the upper end of the copper bar bracket;

When the portal frame moves in place, the pressing oil cylinder is fast clamped with the copper bar, so that the electrode rod is communicated with the output power supply. And a cylinder rod of the pressing oil cylinder extends out to push the movable pressing plate, so that the connecting copper bar is connected with the transition copper bar.

When the portal frame moves in place, the upper end extension rod of the locking oil cylinder enters the U-shaped groove opening, the cylinder rod of the locking oil cylinder contracts, the disc-shaped pressure head presses the upper end face of the U-shaped groove opening downwards, the walking mechanism is prevented from moving, and the electrode chamber is guaranteed to be immobile during working.

The cathode is connected with the electricity by adopting the copper bar to lock rapidly, the structure is simple and reliable, the electric efficiency is high, and the economy is high.

The electrode chamber is fixed with the upper opening of the furnace body, the center of the electrode chamber is coaxial with the center of the water-cooled copper crucible, the titanium electrode is placed behind the center of the electrode chamber, the travelling mechanism moves forwards stably, and when the titanium electrode is in place, the in-place locking device works to lock the travelling mechanism. Then the copper bar fast locking mechanism works to lead the output power supply to be conducted with the electrode rod. The lifting power unit enables the lifting platform and the electrode rod to descend through the lead screw, and when the lifting platform descends to a specified position, the titanium electrode is clamped by the pneumatic clamping head at the end part of the electrode rod, so that the electrode rod is communicated with the titanium electrode. The electrode rod continues to descend until the end part of the titanium electrode is a specified distance away from the bottom of the water-cooled copper crucible, and then stops descending. The dynamic seal seat is connected with the electrode chamber to form a closed space, and a vacuum environment is formed after the space is evacuated. After power is supplied, the power supply, the cathode cable, the electrode rod, the water-cooled copper crucible and the power supply form a closed loop, and smelting is started. When the preset molten metal amount is reached, the reverse-jacking quick lifting mechanism works to quickly lift the electrode rod and the residual titanium electrode, so that the water-cooled copper crucible can quickly tilt without interference, and titanium liquid is poured. After the casting is cooled, the in-place locking device is loosened, the electrode chamber is supported by the electrode chamber lifting mechanism, the copper bar quick locking mechanism is loosened, and the travelling mechanism moves backwards stably. The upper opening of the furnace body is opened, and the solidified shell is cleaned.

The crucible overturning system comprises a smelting crucible and a transverse overturning shaft, the overturning shaft is fixedly connected with the smelting crucible, the outer end of the overturning shaft can be clamped and loosened with an anode copper bar, the lower end of a hydraulic oil cylinder shell is connected with a lower furnace body in a shaft mode, the upper end of an output rod of the hydraulic oil cylinder is connected with the lower end of a connecting rod in a shaft mode, the upper end of the connecting rod is connected with the overturning shaft, the smelting crucible is arranged in an upper furnace body, a sprue cup is arranged in the upper furnace body in front of the smelting crucible and corresponds to an overturning path of the smelting crucible, and the.

The hydraulic oil cylinder drives the overturning shaft to realize 105-degree overturning; the melting crucible is turned over to pour the molten liquid into the pouring cup; and the sprue cup leaks molten steel into the die.

The anode copper bar comprises an upper movable plate and a lower fixed plate, a lower clamping block is arranged at the upper end of the fixed plate, an upper clamping block is arranged at the lower end of the movable plate corresponding to the lower clamping block, and an arc-shaped turnover shaft clamping groove is formed in the upper end surface of the lower clamping block and the lower end surface of the upper clamping block correspondingly; guide pillars are arranged around the upper clamping block and the lower clamping block, the lower ends of the guide pillars are fixedly connected with the fixed plate, the upper ends of the guide pillars penetrate through holes in the movable plate to be connected with the oil cylinder bearing plate, an oil cylinder extending downwards is arranged in the middle of the oil cylinder bearing plate, and the lower end of an oil cylinder extending rod is fixedly connected with the movable plate. The oil cylinder pushes the movable plate to descend so that the upper clamping block and the lower clamping block clamp the shaft, the shaft is clamped so as to supply power to the crucible through the shaft, and the shaft is loosened so as to turn over the crucible.

The centrifugal system comprises a faceplate, a centrifugal plate, a centrifugal main shaft, a vertical transmission shaft, a centrifugal fixing seat, a transmission shaft fixing seat and a vertical motor, wherein an output shaft at the upper end of the motor is connected with the lower end of the transmission shaft;

the transmission shaft passes through the transmission shaft fixing base setting furnace body lower extreme under, and the transmission shaft upper end links to each other with driving pulley, and driving pulley passes through the drive belt and links to each other with driven pulley, and driven pulley sets up on centrifugal main shaft upper portion, and centrifugal main shaft upper end is the centrifugal disc, and centrifugal main shaft passes through centrifugal fixing base setting furnace body lower extreme under.

The motor is fixedly connected with the ground through a motor connecting disc and drives the transmission shaft through a coupler;

the centrifugal fixing seat is fixed on the ground through a bottom plate, and the upper end of the bottom plate is connected with the lower end of the corrugated pipe in a handle mode; the upper end of the corrugated pipe is connected with the lower furnace body handle, and the corrugated pipe is sleeved outside the centrifugal fixing seat.

The centrifugal system is provided with the corrugated pipe, and the corrugated pipe isolates the vibration generated by the centrifugal system from the furnace body, so that the vibration of the whole equipment is greatly reduced, and the running reliability of the equipment is improved.

The centrifugal fixing seat adopts a middle T-shaped hole structure, the main body part of the centrifugal main shaft is arranged in the T-shaped hole, and the T-shaped hole exposed at the upper end of the centrifugal main shaft is connected with the driven belt wheel; an upper cylindrical roller bearing is arranged at the upper part of the large-diameter hole at the upper end of the T-shaped hole, a thrust ball bearing is arranged at the lower part of the large-diameter hole, and a lower cylindrical roller bearing is arranged at the lower end of the small-diameter hole at the lower part of the T-shaped hole; the centrifugal main shaft is connected with the centrifugal fixing seat through an upper cylindrical roller bearing, a thrust ball bearing and a lower cylindrical roller bearing.

The cylindrical roller bearing bears radial force, and the thrust ball bearing bears axial force generated by a centrifugal disc, a die and the like.

The periphery of an upper port of the upper furnace body is provided with a transverse connecting block, the periphery of the lower end of the electrode chamber is arranged on the transverse lower connecting block corresponding to the upper connecting block, the outer side of the lower end of the upper connecting block is connected with a transverse edge of a T-shaped connecting piece in a shaft mode, a vertical threaded hole is formed in the other transverse edge of the T-shaped connecting piece, a vertical stud is screwed in the vertical threaded hole, the upper end of the vertical stud is provided with a rotating wheel, and a vertical.

After the upper end port of the upper furnace body is aligned with the lower end of the electrode chamber, the T-shaped connecting piece is turned upwards, and the crank is shaken to enable the lower end of the vertical stud to be jacked to the upper connecting block.

The upper end of the electrode chamber is provided with an observation window, a camera and a pressing block assembly capable of pressing the movable sealing seat at the upper port of the electrode chamber.

The vacuum system comprises a slide valve pump, an inlet of the slide valve pump is connected with an outlet of a first roots pump, an inlet of the first roots pump is connected with an outlet of a second roots pump, an inlet of the second roots pump is connected with a main pipeline, and an inlet of the main pipeline is connected with a vacuum pumping port of the lower furnace body through a dust removal tank; the pipeline at the inlet of the dust removing tank is provided with a vacuum gauge and an air release valve.

And a pneumatic baffle valve is arranged on a pipeline connecting the second roots pump and the main pipeline. After the channel is closed and stops working, the pneumatic baffle valve is closed, so that the vacuum pump can keep negative pressure, and the service life of the vacuum pump is prolonged. The combination of the slide valve pump, the first roots pump and the second roots pump is a plurality of groups, and the inlets of the second roots pumps of each group are connected with the main pipeline. And a plurality of groups of vacuum pump combinations are arranged, so that the vacuumizing efficiency can be obviously improved.

The electrode pole upper portion is provided with the direction diaphragm, and direction diaphragm four corners is provided with vertical leading wheel, is provided with four guide post around the electrode pole, and guide post lower extreme is fixed with lift platform upper end, and four guide post upper ends link to each other through the direction frame, and guide post and leading wheel cooperate. Under the guide of the guide wheel and the guide upright post, the electrode rod can be quickly lifted.

And the central hole of the dynamic seal seat is connected with the outer wall of the electrode rod through a framework rubber ring. The smelting amount of the equipment can be 1500Kg, the pouring height can be 2.5m, and the equipment can accommodate a die with the diameter phi of 4.5 m.

The motion process of the equipment is as follows: the electrode transmission system moves to open to expose the electrode chamber, the mould shell and the electrode are placed in the crucible, and then the motor transmission system moves to the upper part of the electrode chamber.

The electrode rod is slowly lowered, the electrode joint clamps the electrode rod and the electrode, and the electrode rod is slowly raised, so that a certain distance is reserved between the electrode and the formwork.

The dynamic seal seat is pressed on the electrode chamber through the pressing block assembly. The transmission trolley sends the flower disc and the die to the centrifugal disc, and the trolley moves out of the lower furnace body.

Closing the lower furnace door, the upper furnace door, the rear furnace door and the like, vacuumizing the vacuum system, and closing the vacuum system when the vacuum degree reaches 1 multiplied by 10 < -1 > Pa.

And (3) starting to supply power to the direct-current power supply, discharging and melting the electrode and the die to form titanium liquid, and after a certain amount of titanium liquid is dissolved, turning off the power supply, and quickly lifting the electrode rod by the quick lifting cylinder (1-2 s). Then the hydraulic cylinder overturns the crucible overturning mechanism by 105 degrees, titanium liquid in the crucible is poured into a mold, a casting is formed through centrifugation, then the crucible returns to the original position, the electrode rod slowly descends for a certain position, and the casting is waited to be cooled.

Claims

1. The electrode transmission system of the vacuum cooling crucible skull furnace comprises a travelling mechanism, a lifting platform, a portal frame, a reverse-jacking quick lifting mechanism, an electrode rod, a movable sealing seat, a lifting power unit of the lifting platform and an electrode chamber lifting mechanism, and is characterized in that the portal frame is arranged on the travelling mechanism, the lifting platform is arranged on the portal frame, the reverse-jacking quick lifting mechanism is arranged on the lifting platform, the power output end of the reverse-jacking quick lifting mechanism is connected with the upper end of the electrode rod, the movable sealing seat is arranged above the electrode chamber and corresponds to an upper port of the electrode chamber, the lower end of the electrode rod penetrates through the center of the movable sealing seat, the lifting power unit is arranged on the platform, and the electrode chamber lifting mechanism is arranged on the portal frame;

the travelling mechanism comprises a motor and two transverse supporting frames, and two sides of the lower end of the portal frame are arranged on the two supporting frames; the motor is arranged at the lower part of the portal frame, a driving gear is arranged on an output shaft of the motor, the driving gear is connected with a driven gear below the driving gear through a chain, the driven gear is arranged at the end part of a transverse transmission shaft, two sides of the transverse transmission shaft are connected with the centers of the rear lower end rollers of the support frames at two sides, and the front ends and the middle parts of the support frames at two sides are correspondingly provided with rollers; the roller is arranged on the I-shaped steel on the platform;

the electrode transmission system further comprises a copper bar quick locking mechanism and an in-place locking device, the copper bar quick locking mechanism is arranged at the in-place position in front of the portal frame, the copper bar quick locking mechanism comprises a movable pressing plate, a vertical copper bar support, a transverse pressing oil cylinder and a connecting copper bar, the pressing oil cylinder is fixed at the upper end of the copper bar support, a push rod is mounted at the front end of a cylinder rod of the pressing oil cylinder, the push rod is connected with the movable pressing plate, a transition copper bar is arranged in front of the movable pressing plate, a connecting copper bar is arranged on the side of the portal frame, the positions of the movable pressing plate and the transition copper bar are arranged corresponding to the in-place position in front of the connecting; the connecting copper bar is connected with the lower end of the cathode cable, the upper end of the cathode cable is connected with a conductive copper bar for supplying power to the electrode rod, and the conductive copper bar is arranged at the upper part of the electrode rod; the transition copper bar is arranged at the upper end of the copper bar bracket;

the in-place locking device comprises a vertical locking oil cylinder arranged on the platform and a square locking frame arranged on the side wall of the supporting frame, the middle part of the lower front end face of the square locking frame is provided with a U-shaped notch, an upper end extension rod of the locking oil cylinder is arranged on a U-shaped notch moving path in front of the U-shaped notch, and the upper end of the upper end extension rod of the locking oil cylinder is provided with a disc-shaped pressure head matched with the upper end face of the U-shaped notch;

2. The electrode transmission system of the vacuum crucible skull furnace of claim 1, wherein the reverse-jacking fast-lifting mechanism comprises two air cylinders, the two air cylinders are arranged at the front side and the rear side of the lifting platform, the air cylinders are connected to the lifting platform through cylinder body intermediate flanges, the cylinder rods of the air cylinders are vertically upward, the upper ends of the cylinder rods are connected with the fixing assemblies, and the fixing assemblies are connected with the upper ends of the electrode rods through downward couplings.

3. The electrode transmission system of the vacuum crucible skull-condensing furnace of claim 1, wherein the lifting power unit comprises a servo motor, the servo motor is connected with the upper ends of vertical screws at the front side and the rear side of the lifting platform through a corner speed reducer, the lower ends of the screws are screwed through threaded holes in the lifting platform, and the servo motor and the corner speed reducer are arranged at the upper end of the portal frame.

4. The electrode transmission system of the vacuum crucible skull furnace of claim 1, wherein the electrode chamber lifting mechanism comprises two sets of lifting mechanisms respectively arranged on two side supporting frames, and each lifting mechanism comprises a sleeve, a guide post, a Z-shaped bracket, a lifting oil cylinder and a guide key; the guide post is fixed on the support frame, and the side wall of the guide post is provided with a vertical guide groove; the guide key corresponding to the guide groove is welded on the sleeve, the upper end of the sleeve is connected with the lifting oil cylinder, the side end of the sleeve is connected with the upper end of the Z-shaped bracket, and the lower end of the Z-shaped bracket is connected with the side wall of the electrode chamber.

5. The electrode transmission system of the vacuum crucible skull furnace of claim 1, wherein the upper end of the electrode chamber is provided with an observation window, a camera and a briquetting component capable of pressing the movable sealing seat at the upper port of the electrode chamber.