Centrifugal Rotary Table Device for Induction Shell Furnace

Abstract

This utility model relates to a centrifugal turntable device for an induction solidification furnace. It employs a solidification furnace mold shell housed inside the casting chamber; a centrifugal turntable spindle device connected below the solidification furnace mold shell; a centrifugal turntable brake device located below the centrifugal turntable spindle device; and a braking effect on the centrifugal turntable spindle device achieved through mechanical friction. A centrifugal turntable drive device is located on one side of the centrifugal turntable spindle device. The motor's rotational power is transmitted to the centrifugal turntable spindle device via a belt pulley transmission pair, causing it to rotate and drive the solidification furnace mold shell for centrifugal casting. Utilizing the flexible connection characteristics of the corrugated dust cover, the vibration generated by the centrifugal turntable device is isolated from the furnace body, significantly reducing the vibration of the entire device and solving the problem of equally strong vibrations in the furnace body and mold caused by centrifugal motion in induction solidification furnaces.

Description

Technical Field

[0001] The embodiments of this utility model belong to the technical field of vacuum induction shell-forming furnaces, specifically relating to a centrifugal turntable device for a novel induction shell-forming furnace. Background Technology

[0002] A vacuum induction melting furnace is a specialized piece of equipment used for melting materials such as titanium and titanium alloys, and active refractory metals. It utilizes the electromagnetic induction principle of an induction coil to heat and melt raw metal materials placed in a water-cooled copper crucible (located inside the induction coil) to their melting point. Because the furnace is in a vacuum state, the metal will not react with oxygen or other gases, thus ensuring the quality and purity of the refractory metal. When the molten metal reaches the required casting volume, melting is stopped, the crucible is inverted, and the molten metal is poured into a mold fixed on a centrifugal disc for centrifugal casting, thereby obtaining various castings with complete shapes and clear outlines.

[0003] Because the vacuum induction shell-forming furnace has a large furnace body and a heavy mold, it vibrates significantly when the centrifugal mechanism moves. Since the centrifugal mechanism and the furnace body are rigidly connected, the vibration is transmitted to the furnace body, causing the furnace body and the mold to vibrate equally strongly. This disrupts the normal production of the induction shell-forming furnace and affects the product qualification rate. Utility Model Content

[0004] The purpose of this utility model is to provide a centrifugal turntable device for an induction shell furnace that solves the problem that the vibration of the furnace body and the mold during centrifugal motion causes equally strong vibrations, which disrupts the normal production of the induction shell furnace and affects the product qualification rate.

[0005] To achieve the above objectives, the present invention provides a centrifugal rotary table device for an induction shell-forming furnace, comprising:

[0006] Casting cavity;

[0007] A solidification furnace mold shell is disposed inside the melting and casting cavity;

[0008] A centrifugal turntable spindle assembly is connected below the solidification furnace mold shell.

[0009] A centrifugal disc brake device is provided below the centrifugal disc main shaft assembly; the centrifugal disc brake device exerts a braking effect on the centrifugal disc main shaft assembly through mechanical friction.

[0010] A centrifugal turntable drive device is located on one side of the centrifugal turntable main shaft device; the motor rotation power is transmitted to the centrifugal turntable main shaft device through a belt pulley transmission pair device to make the centrifugal turntable main shaft device rotate, thereby driving the solidification furnace mold shell to perform centrifugal casting.

[0011] Furthermore, in the centrifugal turntable device of the induction solidification furnace described in this utility model, the smelting crucible is connected inside the melting and casting chamber and above the centrifugal turntable main shaft device.

[0012] Furthermore, in the centrifugal turntable device of the induction shell furnace described in this utility model, the centrifugal turntable main shaft device further includes:

[0013] A centrifugal turntable is provided below the solidification furnace mold shell;

[0014] Centrifuge disc baffle, the centrifuge disc baffle is provided at the upper end of the centrifuge disc;

[0015] A rotating shaft is used to mount the centrifugal turntable on its upper end;

[0016] A driven pulley is fixedly connected to the lower end of a rotating shaft, and the upper end face of the driven pulley is in contact with the shoulder of the lower end of the rotating shaft.

[0017] A threaded ring is threadedly connected to the threaded stop at the lower part of the rotating shaft.

[0018] In a cylindrical roller bearing, the upper end face of the threaded ring is in contact with the lower end face of the inner ring of the cylindrical roller bearing.

[0019] The double nut has its lower end face of the threaded ring in contact with its upper end face; the double nut is threadedly connected to the threaded stop at the lower part of the rotating shaft; the double nut and the threaded ring work together to transmit a tightening force along the rotating axis to the inner ring of the cylindrical roller bearing.

[0020] A spacer ring is fixed on the rotating shaft;

[0021] In a cylindrical roller bearing, the lower end face of the spacer ring is in contact with the upper end face of the inner ring of the cylindrical roller bearing.

[0022] A self-aligning roller bearing, wherein the upper end face of the spacer ring is in contact with the lower end face of the inner ring of the self-aligning roller bearing;

[0023] A bearing housing, in which the cylindrical roller bearing is fixed;

[0024] The top ring has its lower end face fitted with the upper end face of the outer ring of the cylindrical roller bearing; the outer ring of the cylindrical roller bearing is securely placed in the bearing hole at the lower end of the bearing housing.

[0025] The inner cylindrical surface of the cylindrical roller bearing is in contact with the cylindrical surface of the bearing stop at the lower end of the rotating shaft.

[0026] The spacer ring is in contact with the lower end face of the inner ring of the cylindrical roller bearing.

[0027] The inner ring of the cylindrical roller bearing has its lower end face in contact with the upper end face of the threaded ring, and the inner ring of the cylindrical roller bearing is fastened to the rotating shaft.

[0028] A spacer ring is fixed inside the bearing hole at the upper end of the bearing housing; the lower end face of the spacer ring is in contact with the bottom surface of the bearing hole at the upper end of the bearing housing.

[0029] The self-aligning roller bearing has its upper end face fitted with the lower end face of the outer ring of the self-aligning roller bearing.

[0030] The dust cover mounting plate base has the upper end face of the outer ring of the self-aligning roller bearing in contact with the lower end face of the dust cover mounting plate base;

[0031] The spacer ring is attached to the upper end face of the outer ring of the self-aligning roller bearing; the outer ring of the self-aligning roller bearing is firmly clamped in the bearing hole at the upper end of the bearing housing;

[0032] The inner ring cylindrical surface of the self-aligning roller bearing is in contact with the cylindrical surface of the bearing stop at the upper end of the rotating shaft.

[0033] A spacer ring is provided, wherein the lower end face of the inner ring of the self-aligning roller bearing is in contact with the upper end face of the spacer ring; the inner ring of the self-aligning roller bearing is fastened to the rotating shaft;

[0034] A fixing plate on the bearing housing is welded to the bearing housing.

[0035] A lower fixing plate for the bearing housing, wherein the bearing housing is fixed on the upper end surface of the lower fixing plate for the bearing housing;

[0036] Centrifugal disc frame, with the lower fixing plate of the bearing seat fixed on the frame mounting plate of the centrifugal disc frame;

[0037] The top ring is fixed in the large hole of the lower fixing plate of the bearing seat. The upper end face of the edge of the top ring is in contact with the lower end face of the inner side of the lower fixing plate of the bearing seat, and the top ring is fastened to the lower fixing plate of the bearing seat by screws evenly distributed around the circumference.

[0038] A dust cover mounting plate base is fixed above the rotating shaft;

[0039] The bearing housing is fixed with a fixed plate, and the dust cover mounting plate base is fixed above the fixed plate.

[0040] A dust cover mounting plate is used to fix the dust cover mounting plate above the base of the dust cover mounting plate.

[0041] A dust cover is fixed above the dust cover mounting plate, and the central axis of the inner hole of the dust cover coincides with the central axis of the inner hole of the dust cover mounting plate.

[0042] A corrugated pipe dust cover, with the corrugated pipe dust cover fixed below it;

[0043] The lower end face of the outer cylindrical ring of the corrugated pipe dust cover is attached to the upper end face of the cavity bottom plate;

[0044] The upper sealing plate has its outer cylindrical surface at the lower end of the inner cylindrical ring of the corrugated pipe dust cover fitting to the inner cylindrical surface of the upper sealing plate; the upper end of the inner hole of the corrugated pipe dust cover is fitted and attached to the outer cylindrical surface of the dust cover mounting plate.

[0045] The upper sealing plate is installed above the lower sealing plate. The inner center axis of the upper sealing plate coincides with the inner center axis of the lower sealing plate. The lower end face of the upper sealing plate is in contact with the upper end face of the lower sealing plate. The upper sealing plate and the lower sealing plate are fastened together by circumferentially distributed screws.

[0046] The lower sealing plate is connected and fixed to the casting cavity by welding. The upper end face of the outer edge of the lower sealing plate is in contact with the lower end face of the seamless steel pipe at the bottom of the casting cavity. The central axis of the inner hole of the lower sealing plate coincides with the central axis of the inner hole of the seamless steel pipe at the bottom of the casting cavity.

[0047] The second dustproof structure is formed by the dust cover mounting plate, the corrugated pipe dust cover, the upper sealing plate, the lower sealing plate, the seamless steel pipe of the casting cavity, and the cavity bottom plate, which prevents dust and debris in the casting cavity from entering the centrifugal spindle device.

[0048] Furthermore, in the centrifugal turntable device of the induction shell-forming furnace described in this utility model, the centrifugal turntable baffle is fixed in the countersunk hole at the upper end of the centrifugal turntable and is fastened to the rotating shaft by a screw located at the center of the upper end of the rotating shaft;

[0049] The centrifugal turntable is mounted on the upper end of the rotating shaft; the lower end face of the centrifugal turntable fits against the shoulder of the upper end of the rotating shaft and is fastened to the rotating shaft by bolts located on the lower cylindrical ring of the centrifugal turntable;

[0050] The inner hole of the driven pulley and the lower end of the rotating shaft are both provided with keyways and connected by a flat key; the driven pulley transmits torque to the rotating shaft through the flat key, and the rotating shaft then transmits torque to the centrifugal turntable, which drives the solidification furnace mold shell fixed on the centrifugal turntable to rotate and perform centrifugal casting in the solidification furnace.

[0051] The spacer ring transmits a downward fastening force along the rotational axis to the inner ring of the cylindrical roller bearing, and simultaneously transmits an upward fastening force along the rotational axis to the inner ring of the self-aligning roller bearing.

[0052] The outer cylindrical surface of the cylindrical roller bearing is in contact with the inner cylindrical surface of the bearing hole at the lower end of the bearing housing; the upper surface of the outer ring of the cylindrical roller bearing is in contact with the bottom surface of the bearing hole at the lower end of the bearing housing.

[0053] The self-aligning roller bearing is fixed in the bearing hole at the upper end of the bearing housing; the outer cylindrical surface of the self-aligning roller bearing is in contact with the inner cylindrical surface of the bearing hole at the upper end of the bearing housing.

[0054] The upper end face of the inner ring of the self-aligning roller bearing is in contact with the lower end face of the bearing shoulder at the upper end of the rotating shaft;

[0055] The inner edge of the lower end face of the upper fixing plate of the bearing seat is in contact with the upper end face of the bearing seat, and the central axis of the inner hole of the upper fixing plate of the bearing seat coincides with the central axis of the inner hole of the bearing seat.

[0056] The inner bore center axis of the bearing housing coincides with the inner bore center axis of the lower fixing plate of the bearing housing, and the bearing housing and the lower fixing plate of the bearing housing are fixedly connected by welding.

[0057] The lower end of the bearing seat lower fixing plate has a protruding cylindrical part that is embedded in the large hole of the frame mounting plate of the centrifugal turntable frame. The lower end face of the outer edge of the bearing seat lower fixing plate is in contact with the upper end face of the frame mounting plate of the centrifugal turntable frame. The bearing seat lower fixing plate and the centrifugal turntable frame are fastened together by circumferentially distributed screws.

[0058] The inner hole center axis of the dust cover mounting plate base coincides with the inner hole center axis of the bearing seat upper fixing plate; the lower end face of the flange of the dust cover mounting plate base is in contact with the upper end face of the bearing seat upper fixing plate, and the dust cover mounting plate base and the bearing seat upper fixing plate are fastened together by circumferentially distributed screws.

[0059] The lower surface of the dust cover is attached to the upper end face of the dust cover mounting plate; and the dust cover and the dust cover mounting plate are fastened together by circumferentially distributed screws; the dust cover isolates the casting chamber from the part below the upper end of the rotating shaft; and prevents dust and debris in the casting chamber from entering the centrifugal spindle device.

[0060] The inner bore center axis of the dust cover mounting plate coincides with the inner bore center axis of the dust cover mounting plate base; the lower end face of the dust cover mounting plate is in contact with the upper end face of the flange of the dust cover mounting plate base, and the dust cover mounting plate and the dust cover mounting plate base are fastened together by circumferentially distributed screws.

[0061] Furthermore, in the centrifugal turntable device of the induction shell furnace described in this utility model, the centrifugal turntable main shaft device further includes:

[0062] A first O-ring is provided on the lower end face of the upper sealing plate, and the first O-ring is pressed by the lower sealing plate into the annular groove on the lower end face of the upper sealing plate;

[0063] The second O-ring is provided on the upper end face of the fixing plate on the bearing seat. The second O-ring is pressed into the annular groove on the upper end face of the fixing plate on the bearing seat by the dust cover mounting plate base.

[0064] The third O-ring is provided on the upper end face of the dust cover mounting plate base. The third O-ring is pressed by the dust cover mounting plate into the annular groove on the upper end face of the dust cover mounting plate base.

[0065] The fourth O-ring is provided on the outer cylindrical surface of the inner edge of the flange lower end face of the dust cover mounting plate base, which is similar to the above-mentioned. The fourth O-ring is pressed by the fixing plate on the bearing seat into the annular groove of the outer cylindrical surface of the inner edge of the flange lower end face of the dust cover mounting plate base.

[0066] A pressure ring is fixed within the first step downward from the upper end face of the dust cover mounting plate base; the lower end face of the flange of the pressure ring is in contact with the first step downward from the upper end face of the dust cover mounting plate base, and the pressure ring and the dust cover mounting plate base are fixed by circumferentially distributed screws.

[0067] A sealing spacer is fixed inside the second step below the upper end face of the dust cover mounting plate base; the outer cylindrical surface of the sealing spacer is in contact with the inner cylindrical surface of the second step below the upper end face of the dust cover mounting plate base.

[0068] The sixth O-ring is provided below the pressure ring; under the clamping force of the pressure ring, the sixth O-ring is pressed into the space surrounded by the pressure ring, the dust cover mounting plate base, the sealing spacer, and the rotating shaft.

[0069] The fifth O-ring is provided below the sealing spacer. Under the clamping force of the sealing spacer, the fifth O-ring is pressed into the space surrounded by the sealing spacer, the dust cover mounting plate base, and the rotating shaft.

[0070] Furthermore, in the centrifugal turntable device of the induction shell furnace described in this utility model, the centrifugal turntable braking device includes:

[0071] The bakelite brake pad is located directly below the driven pulley of the centrifugal turntable spindle device;

[0072] Brake chassis, wherein the lower end face of the bakelite brake pad is in contact with the upper end face of the brake chassis;

[0073] The brake pedal is located below the brake chassis.

[0074] Small hinge shaft, the small hinge shaft passes through the symmetrical axis hole on the brake support pedal and the symmetrical axis hole on the brake chassis;

[0075] A brake support is provided below the brake pedal;

[0076] The large hinge shaft passes through the symmetrical shaft holes on the two shaft seats in the middle of the bottom of the brake support pedal and the two symmetrical shaft holes at the upper end of the two side support plates of the brake bracket.

[0077] The mounting base plate is installed below the brake bracket, and the brake bracket is fixed to the mounting base plate by welding.

[0078] A mounting plate, which is fixed to the bottom cavity door frame plate of the casting cavity by welding;

[0079] A brake spring, the upper end of which is hooked into the hanging hole of the hanging plate, and the lower end of which is hooked into the hanging ear hole on the brake support pedal.

[0080] The braking torque applied to the pedal end of the brake support pedal is transmitted to the brake chassis and the bakelite brake pads through the brake support pedal; the mechanical energy is consumed by the relative friction between the bakelite brake pads and the driven pulley, thereby braking the centrifugal turntable spindle assembly.

[0081] Furthermore, in the centrifugal turntable device of the induction condensing furnace described in this utility model, the central axis of the inner cylindrical surface of the bakelite brake pad coincides with the central axis of the inner cylindrical surface of the brake chassis, and the bakelite brake pad and the brake chassis are fastened together by circumferentially distributed screws.

[0082] The brake pedal has symmetrical shaft holes on its two symmetrical frame sides, and the brake chassis has symmetrical shaft holes on its two symmetrical shaft seats, which are coaxial with the shaft holes on the brake pedal.

[0083] The two symmetrical frame edges of the brake pedal are respectively embedded in the middle of the two symmetrical shaft seats of the brake chassis;

[0084] The small hinge shaft is fixed to the brake chassis by snap rings at both ends of its shaft;

[0085] The small hinge shaft connects the brake chassis to the brake pedal, allowing the brake chassis and the brake pedal to rotate relative to each other around the small hinge shaft.

[0086] The upper ends of the two side support plates of the brake bracket are provided with two symmetrical shaft holes, and the two shaft seats in the middle of the bottom of the brake pedal are provided with symmetrical shaft holes and are coaxial with the shaft holes on the brake bracket; the two symmetrical shaft seats in the middle of the bottom of the brake pedal are embedded in the middle of the upper ends of the two side support plates of the brake bracket.

[0087] The large hinge shaft is fixed to the brake bracket by snap rings at both ends of its shaft;

[0088] The large hinge shaft connects the brake pedal to the brake bracket, allowing the brake pedal to rotate relative to the large hinge shaft.

[0089] The mounting plate has hanging holes; the brake pedal has a hanging lug near the pedal end.

[0090] Furthermore, in the centrifugal turntable device of the induction shell furnace described in this utility model, the centrifugal turntable driving device further includes:

[0091] An asynchronous motor is fixed on one side of the casting cavity, above a motor mounting plate;

[0092] The bottom plane of the mounting flange of the asynchronous motor is in contact with the upper end face of the motor mounting pad; the protruding cylinder on the bottom plane of the mounting flange of the asynchronous motor is embedded in the countersunk hole on the upper end face of the motor mounting pad; the bolt holes evenly distributed around the circumference of the mounting flange of the asynchronous motor are aligned with the bolt holes evenly distributed around the circumference of the motor mounting pad.

[0093] The motor mounting plate is located above the frame mounting plate of the centrifugal turntable frame;

[0094] The bottom plane of the motor mounting plate is in contact with the upper surface of the frame mounting plate of the centrifugal turntable frame;

[0095] The active pulley is mounted on the motor shaft at the lower end of the asynchronous motor;

[0096] A V-belt is fitted into the V-belt grooves of the driving pulley and the driven pulley at both ends; the driving pulley transmits torque to the driven pulley through the V-belt.

[0097] A motor mounting plate is provided, and a motor tensioning block is provided near the side of the motor mounting plate facing the driven pulley. The motor tensioning block is provided with threaded holes and adjusting bolts. By changing the extension length of the adjusting bolts on the motor tensioning block, the distance between the driving pulley and the driven pulley and the tension of the V-belt are adjusted.

[0098] Furthermore, in the centrifugal turntable device of the induction shell furnace described in this utility model, the bolt holes evenly distributed circumferentially on the motor mounting plate are respectively aligned with the waist-shaped grooves on the frame mounting plate of the centrifugal turntable frame; the asynchronous motor, the motor mounting plate, and the centrifugal turntable frame are fastened together by bolts evenly distributed circumferentially; the lower end face of the drive pulley is flush with the end face of the motor shaft at the lower end of the asynchronous motor, and the inner hole of the drive pulley and the motor shaft at the lower end of the asynchronous motor are both provided with keyways and connected by a flat key, and the asynchronous motor transmits torque to the drive pulley through the flat key.

[0099] Furthermore, in the centrifugal turntable device of the induction solidification furnace described in this utility model, the solidification furnace mold shell is fixed on the centrifugal turntable; the melting crucible is located above the solidification furnace mold shell and the centrifugal turntable and is installed on the tilting device inside the melting and casting cavity, and can be driven by the tilting device to make a flipping motion.

[0100] Compared with the prior art, this utility model adopts the following approach: a solidification furnace mold shell is set inside the melting and casting cavity; a centrifugal turntable spindle device is connected below the solidification furnace mold shell; a centrifugal turntable brake device is set below the centrifugal turntable spindle device; the centrifugal turntable spindle device is braked by mechanical friction; a centrifugal turntable drive device is set on one side of the centrifugal turntable spindle device; the rotational power of the motor is transmitted to the centrifugal turntable spindle device through a belt pulley transmission pair device to make rotational motion, thereby driving the solidification furnace mold shell to perform centrifugal casting.

[0101] This invention incorporates a corrugated pipe dust cover structure into the centrifugal system. Utilizing the flexible connection characteristics of the corrugated pipe dust cover, the vibration generated by the centrifugal turntable is isolated from the furnace body, significantly reducing the overall vibration of the equipment and improving its operational reliability. This solves the problem of vibrations in induction shell casting furnaces caused by centrifugal motion, resulting in equally intense vibrations in both the furnace body and the mold, which disrupts normal production and affects product yield.

[0102] Meanwhile, this invention employs a double dust barrier consisting of a dust cover and a corrugated pipe dust cover to prevent dust and debris from the casting chamber from entering the components of the centrifugal spindle device that are covered by the dust cover and the corrugated pipe dust cover, thus achieving reliable dust protection. The device also utilizes multiple O-ring seals to isolate the space inside the casting chamber from the external atmosphere, achieving a reliable seal.

[0103] This utility model also adopts a centrifugal turntable braking mechanism. After the centrifugal casting operation is completed in the induction solidification furnace, the on-site personnel can brake the centrifugal turntable device by stepping on the brake pedal, which improves the convenience of equipment operation. Attached Figure Description

[0104] Figure 1 This is the front view of the present invention;

[0105] Figure 2 This is a top view of the present invention;

[0106] Figure 3 This is a cross-sectional view (AA) of the present invention;

[0107] Figure 4 This is a BB cross-sectional view of the present invention;

[0108] Figure 5 This is a CC cross-sectional view of the present invention;

[0109] Figure 6 This is a DD cross-sectional view of the present invention;

[0110] Figure 7 This is a partial enlarged view of E of the present invention;

[0111] Figure 8 This is the right view of the present invention;

[0112] Figure 9 This is a partial enlarged view of F of this utility model.

[0113] In the diagram: 1-Centrifuge disc baffle, 2-Centrifuge disc, 3-Dust cover mounting plate, 4-Dust cover mounting plate base, 5-Dust cover, 6-Bearing seat upper fixing plate, 7-Bellowed pipe dust cover, 8-Bearing seat, 9-Cavity bottom plate, 10-Upper sealing plate, 11-Lower sealing plate, 12-Bearing seat lower fixing plate, 13-Hanging plate, 14-Centrifuge disc frame, 15-Bakelite brake pad, 16-Brake chassis, 17-Brake spring, 18-Brake support pedal, 19-Large winch shaft, 20-Small winch shaft, 21-Brake bracket, 22-Mounting and fixing base plate, 23-Driven pulley, 24-Cavity base foot, 25-V-belt, 26-Adjusting bolt, 27-Motor tensioning block, 28 - Drive pulley, 29- Motor mounting plate, 30- Asynchronous motor, 31- Top ring, 32- Double nut, 33- Threaded ring, 34- Cylindrical roller bearing, 35- First O-ring seal, 36- Spacer ring, 37- Spacer ring, 38- Self-aligning roller bearing, 39- Second O-ring seal, 40- Third O-ring seal, 41- Fourth O-ring seal, 42- Fifth O-ring seal, 43- Sixth O-ring seal, 44- Sealing spacer ring, 45- Pressure ring, 46- Rotary shaft, 47- Melting crucible, 48- Melting and casting cavity, 49- Solidification furnace mold shell, 100- Centrifugal turntable spindle assembly, 200- Centrifugal turntable brake assembly, 300- Centrifugal turntable drive assembly. Detailed Implementation

[0114] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0115] The embodiments of this utility model relate to a centrifugal turntable device for an induction shell-forming furnace, such as... Figures 1-9 As shown, it includes:

[0116] In this embodiment, a melting and casting chamber 48 is provided in the centrifugal turntable device of the induction solidification furnace;

[0117] A solidification furnace mold shell 49 is provided inside the melting and casting cavity 48; the solidification furnace mold shell 49 is used to hold the molten steel coming out of the melting crucible 47.

[0118] A centrifugal turntable spindle device 100 is installed below the solidification furnace mold shell 49; the centrifugal turntable spindle device 100 is connected to the solidification furnace mold shell 49.

[0119] A centrifugal turntable brake device 200 is provided below the centrifugal turntable spindle assembly 100; the centrifugal turntable brake device 200 brakes the centrifugal turntable spindle assembly 100 through mechanical friction.

[0120] The centrifugal turntable drive device 300 is located on one side of the centrifugal turntable main shaft device 100. The centrifugal turntable drive device 300 transmits the rotational power of the motor to the centrifugal turntable main shaft device 100 through a belt pulley transmission pair to make it rotate, thereby driving the solidification furnace mold shell 49 to perform centrifugal casting and providing driving force.

[0121] Inside the casting chamber 48, a melting crucible 47 is placed above the centrifugal turntable spindle device 100.

[0122] This embodiment utilizes the flexible connection feature of the corrugated dust cover to isolate the vibration generated by the centrifugal turntable from the furnace body, significantly reducing the vibration of the entire equipment and improving its operational reliability. This solves the problem that the vibration of the induction shell furnace during centrifugal motion causes equally strong vibrations in both the furnace body and the mold, disrupting normal production and affecting product yield.

[0123] Meanwhile, this embodiment employs a dual dustproof barrier consisting of a dust cover and a bellows dust cover to prevent dust and debris from the casting chamber from entering the components of the centrifugal spindle device that are covered by the dust cover and the bellows dust cover, thus achieving reliable dust prevention. Multiple O-ring seals are used to isolate the space inside the casting chamber from the external atmosphere, achieving reliable sealing.

[0124] This embodiment also employs a centrifugal turntable braking mechanism. After the centrifugal casting operation is completed in the induction solidification furnace, on-site personnel can brake the centrifugal turntable device by stepping on the brake pedal, which improves the convenience of equipment operation.

[0125] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the centrifugal turntable spindle assembly 100 also includes:

[0126] A centrifugal turntable 2 is installed below the solidification furnace mold shell 49;

[0127] A centrifugal disc baffle 1 is installed at the upper end of the centrifugal disc 2;

[0128] The centrifugal turntable 2 is mounted on the upper end of the rotating shaft 46;

[0129] A driven pulley 23 is fixedly connected to the lower end of the rotating shaft 46, and the upper end face of the driven pulley 23 is in contact with the shoulder of the lower end of the rotating shaft 46.

[0130] A threaded ring 33 is connected by a thread at the threaded stop at the lower part of the rotating shaft 46;

[0131] The upper end face of the threaded ring 33 is in contact with the lower end face of the inner ring of the cylindrical roller bearing 34.

[0132] The lower end face of the threaded ring 33 is in contact with the upper end face of the double nut 32; the double nut 32 is threadedly connected to the threaded stop at the lower part of the rotating shaft 46; the double nut 32 and the threaded ring 33 work together to transmit an upward tightening force along the rotating shaft 46 to the inner ring of the cylindrical roller bearing 34.

[0133] A spacer ring 36 is fixed on the rotating shaft 46;

[0134] The lower end face of the spacer ring 36 is in contact with the upper end face of the inner ring of the cylindrical roller bearing 34.

[0135] The upper end face of the spacer ring 36 is in contact with the lower end face of the inner ring of the self-aligning roller bearing 38;

[0136] A cylindrical roller bearing 34 is fixed in the bearing hole at the lower end of the bearing housing 8;

[0137] The lower end face of the outer ring of the cylindrical roller bearing 34 is in contact with the upper end face of the top ring 31; the outer ring of the cylindrical roller bearing 34 is firmly fixed in the bearing hole at the lower end of the bearing housing 8.

[0138] The inner cylindrical surface of the cylindrical roller bearing 34 is in contact with the cylindrical surface of the bearing stop at the lower end of the rotating shaft 46.

[0139] The upper end face of the inner ring of the cylindrical roller bearing 34 is in contact with the lower end face of the spacer ring 36;

[0140] The lower end face of the inner ring of the cylindrical roller bearing 34 is in contact with the upper end face of the threaded ring 33, and the inner ring of the cylindrical roller bearing 34 is fastened to the rotating shaft 46.

[0141] A spacer 37 is fixed inside the bearing hole at the upper end of the bearing housing 8; the lower end face of the spacer 37 is in contact with the bottom surface of the bearing hole at the upper end of the bearing housing 8.

[0142] The upper end face of spacer 37 is in contact with the lower end face of the outer ring of self-aligning roller bearing 38;

[0143] The upper end face of the outer ring of the self-aligning roller bearing 38 is in contact with the lower end face of the dust cover mounting plate base 4;

[0144] The lower end face of the outer ring of the self-aligning roller bearing 38 is in contact with the upper end face of the spacer 37; the outer ring of the self-aligning roller bearing 38 is firmly clamped in the bearing hole at the upper end of the bearing housing 8;

[0145] The inner ring cylindrical surface of the self-aligning roller bearing 38 is in contact with the bearing stop cylindrical surface at the upper end of the rotating shaft 46.

[0146] The lower end face of the inner ring of the self-aligning roller bearing 38 is in contact with the upper end face of the spacer ring 36; the inner ring of the self-aligning roller bearing 38 is fastened to the rotating shaft 46;

[0147] The bearing housing 8 is welded to the upper fixing plate 6 of the bearing housing;

[0148] The bearing housing 8 is fixed to the upper end face of the lower fixing plate 12 of the bearing housing;

[0149] The bearing seat lower fixing plate 12 is fixed on the frame mounting plate of the centrifugal rotary table frame 14;

[0150] A top ring 31 is fixed in the large hole of the lower fixing plate 12 of the bearing housing. The upper end face of the edge of the top ring 31 is in contact with the lower end face of the inner side of the lower fixing plate 12 of the bearing housing, and the top ring 31 is fastened to the lower fixing plate 12 of the bearing housing by screws evenly distributed around the circumference.

[0151] The dust cover mounting plate base 4 is fixed above the fixed plate 6 on the bearing seat;

[0152] Fix the dust cover mounting plate 3 above the dust cover mounting plate base 4;

[0153] A dust cover 5 is fixed above the dust cover mounting plate 3, with the inner center axis of the dust cover 5 coinciding with the inner center axis of the dust cover mounting plate 3.

[0154] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the centrifugal disc 2 is mounted on the upper end of the rotating shaft 46. The lower end face of the centrifugal disc 2 is in contact with the shoulder of the upper end of the rotating shaft 46 and is fastened to the rotating shaft 46 by screws located on the lower cylindrical ring of the centrifugal disc 2. The centrifugal disc baffle 1 is installed in the countersunk hole at the upper end of the centrifugal disc 2 and is fastened to the rotating shaft 46 by screws located at the center of the upper end of the rotating shaft 46.

[0155] Driven pulley 23 is fitted onto the lower end of rotating shaft 46. The upper end face of driven pulley 23 fits against the shoulder of the lower end of rotating shaft 46. Both the inner hole of driven pulley 23 and the lower end of rotating shaft 46 are provided with keyways and connected by flat keys. Driven pulley 23 transmits torque to rotating shaft 46 through flat keys. Rotating shaft 46 then transmits torque to centrifugal turntable 2, which drives the solidification furnace mold shell 49 fixed on centrifugal turntable 2 to rotate together, thereby realizing centrifugal casting of solidification furnace.

[0156] The lower bearing seat fixing plate 12 is installed on the frame mounting plate of the centrifugal disc frame 14. The protruding cylinder at the lower end of the lower bearing seat fixing plate 12 is embedded in the large hole of the frame mounting plate of the centrifugal disc frame 14. The lower end face of the outer edge of the lower bearing seat fixing plate 12 is in contact with the upper end face of the frame mounting plate of the centrifugal disc frame 14, and the lower bearing seat fixing plate 12 and the centrifugal disc frame 14 are fastened together by circumferentially distributed screws.

[0157] The inner cylindrical surface of the cylindrical roller bearing 34 is in contact with the cylindrical surface of the bearing stop at the lower end of the rotating shaft 46, the upper end face of the inner ring of the cylindrical roller bearing 34 is in contact with the lower end face of the spacer ring 36, and the lower end face of the inner ring of the cylindrical roller bearing 34 is in contact with the upper end face of the threaded ring 33; in this way, the inner ring of the cylindrical roller bearing 34 is fastened to the rotating shaft 46.

[0158] The threaded ring 33 is installed at the threaded stop at the lower part of the rotating shaft 46 by means of threaded engagement. The upper end face of the threaded ring 33 is in contact with the lower end face of the inner ring of the cylindrical roller bearing 34, and the lower end face of the threaded ring 33 is in contact with the upper end face of the double nut 32. The double nut 32 is installed at the threaded stop at the lower part of the rotating shaft 46 by means of threaded engagement. The double nut 32 and the threaded ring 33 work together to transmit the tightening force along the rotating shaft 46 to the inner ring of the cylindrical roller bearing 34.

[0159] Spacer ring 36 is mounted on rotating shaft 46. The lower end face of spacer ring 36 is in contact with the upper end face of the inner ring of cylindrical roller bearing 34, and the upper end face of spacer ring 36 is in contact with the lower end face of the inner ring of self-aligning roller bearing 38. Spacer ring 36 transmits a downward fastening force along rotating shaft 46 to the inner ring of cylindrical roller bearing 34, and at the same time transmits an upward fastening force along rotating shaft 46 to the inner ring of self-aligning roller bearing 38.

[0160] Spacer 37 is installed in the bearing hole at the upper end of bearing housing 8. The lower end face of spacer 37 is in contact with the bottom surface of the bearing hole at the upper end of bearing housing 8, and the upper end face of spacer 37 is in contact with the lower end face of the outer ring of self-aligning roller bearing 38.

[0161] The self-aligning roller bearing 38 is installed in the bearing hole at the upper end of the bearing housing 8. The cylindrical surface of the outer ring of the self-aligning roller bearing 38 is in contact with the cylindrical surface of the inner bearing hole at the upper end of the bearing housing 8, the upper end face of the outer ring of the self-aligning roller bearing 38 is in contact with the lower end face of the dust cover mounting plate base 4, and the lower end face of the outer ring of the self-aligning roller bearing 38 is in contact with the upper end face of the spacer 37. In this way, the outer ring of the self-aligning roller bearing 38 is firmly clamped in the bearing hole at the upper end of the bearing housing 8. The cylindrical surface of the inner ring of the self-aligning roller bearing 38 is in contact with the cylindrical surface of the bearing stop at the upper end of the rotating shaft 46, the upper end face of the inner ring of the self-aligning roller bearing 38 is in contact with the lower end face of the bearing stop shoulder at the upper end of the rotating shaft 46, and the lower end face of the inner ring of the self-aligning roller bearing 38 is in contact with the upper end face of the spacer 36. In this way, the inner ring of the self-aligning roller bearing 38 is fastened to the rotating shaft 46.

[0162] The upper fixing plate 6 of the bearing housing is connected to the bearing housing 8 by welding. The inner edge of the lower end face of the upper fixing plate 6 is in contact with the upper end face of the bearing housing 8, and the central axis of the inner hole of the upper fixing plate 6 coincides with the central axis of the inner hole of the bearing housing 8.

[0163] The dust cover mounting plate base 4 is installed above the bearing seat fixing plate 6. The inner hole center axis of the dust cover mounting plate base 4 coincides with the inner hole center axis of the bearing seat fixing plate 6. The lower end face of the flange of the dust cover mounting plate base 4 is in contact with the upper end face of the bearing seat fixing plate 6. The dust cover mounting plate base 4 and the bearing seat fixing plate 6 are fastened together by circumferentially distributed screws.

[0164] The dust cover mounting plate 3 is installed above the dust cover mounting plate base 4. The central axis of the inner hole of the dust cover mounting plate 3 coincides with the central axis of the inner hole of the dust cover mounting plate base 4. The lower end face of the dust cover mounting plate 3 is in contact with the upper end face of the flange of the dust cover mounting plate base 4. The dust cover mounting plate 3 and the dust cover mounting plate base 4 are fastened together by circumferentially distributed screws.

[0165] The dust cover 5 is installed above the dust cover mounting plate 3. The central axis of the inner hole of the dust cover 5 coincides with the central axis of the inner hole of the dust cover mounting plate 3. The lower surface of the dust cover 5 is in contact with the upper end surface of the dust cover mounting plate 3. The dust cover 5 and the dust cover mounting plate 3 are fastened together by circumferentially distributed screws. The dust cover 5 serves to isolate the casting cavity 48 from the part below the upper end of the rotating shaft 46, preventing dust and debris in the casting cavity 48 from entering the various components covered by the dust cover 5 in the centrifugal spindle device 100.

[0166] A corrugated pipe dust cover 7 is fixed below the dust cover 5; the lower end face of the outer cylindrical ring of the corrugated pipe dust cover 7 is attached to the upper end face of the cavity bottom plate 9; the outer cylindrical surface of the lower end of the inner cylindrical ring of the corrugated pipe dust cover 7 is attached to the inner cylindrical surface of the upper sealing plate 10; the upper end of the inner hole of the corrugated pipe dust cover 7 is fitted and attached to the outer cylindrical surface of the dust cover mounting plate 3.

[0167] The upper sealing plate 10 is installed above the lower sealing plate 11. The inner hole center axis of the upper sealing plate 10 coincides with the inner hole center axis of the lower sealing plate 11. The lower end face of the upper sealing plate 10 is in contact with the upper end face of the lower sealing plate 11. The upper sealing plate 10 and the lower sealing plate 11 are fastened together by circumferentially distributed screws.

[0168] The lower sealing plate 11 is connected and fixed to the casting cavity 48 by welding. The upper end face of the outer edge of the lower sealing plate 11 is in contact with the lower end face of the seamless steel pipe at the bottom of the casting cavity 48. The inner center axis of the lower sealing plate 11 coincides with the inner center axis of the seamless steel pipe at the bottom of the casting cavity 48.

[0169] The second dustproof structure is formed by the dust cover mounting plate 3, the corrugated pipe dust cover 7, the upper sealing plate 10, the lower sealing plate 11, the seamless steel pipe of the casting cavity 48, and the cavity bottom plate 9, which prevents dust and debris in the casting cavity 48 from entering the centrifugal spindle device 100.

[0170] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the centrifugal turntable spindle assembly 100 also includes:

[0171] A first O-ring 35 is provided on the lower end face of the upper sealing plate 10. The first O-ring 35 is pressed by the lower sealing plate 11 into the annular groove on the lower end face of the upper sealing plate 10.

[0172] A second O-ring 39 is provided on the upper end face of the bearing housing fixing plate 6. The second O-ring 39 is pressed into the annular groove on the upper end face of the bearing housing fixing plate 6 by the dust cover mounting plate base 4.

[0173] A third O-ring 40 is provided on the upper surface of the dust cover mounting plate base 4. The third O-ring 40 is pressed by the dust cover mounting plate 3 into the annular groove on the upper surface of the dust cover mounting plate base 4.

[0174] A fourth O-ring 41 is provided on the outer cylindrical surface of the inner edge of the flange lower end face of the dust cover mounting plate base 4. The fourth O-ring 41 is pressed by the fixing plate 6 on the bearing seat into the annular groove of the outer cylindrical surface of the inner edge of the flange lower end face of the dust cover mounting plate base 4.

[0175] A pressure ring 45 is fixed in the first step downward from the upper end face of the dust cover mounting plate base 4; the lower end face of the flange of the pressure ring 45 is in contact with the first step downward from the upper end face of the dust cover mounting plate base 4, and the pressure ring 45 and the dust cover mounting plate base 4 are fixed by screws evenly distributed in the circumferential direction.

[0176] A sealing ring 44 is fixed inside the second step below the upper end face of the dust cover mounting plate base 4; the outer cylindrical surface of the sealing ring 44 is in contact with the inner cylindrical surface of the second step below the upper end face of the dust cover mounting plate base 4.

[0177] A sixth O-ring seal 43 is provided below the pressure ring 45; under the clamping force of the pressure ring 45, the sixth O-ring seal 43 is pressed into the space surrounded by the pressure ring 45, the dust cover mounting plate base 4, the sealing spacer ring 44, and the rotating shaft 46.

[0178] The fifth O-ring 42 is set below the sealing spacer 44. Under the pressing force of the sealing spacer 44, the fifth O-ring is pressed into the space surrounded by the sealing spacer 44, the dust cover mounting plate base 4, and the rotating shaft 46.

[0179] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the centrifugal disc brake device 200 includes:

[0180] A bakelite brake pad 15 is installed directly below the driven pulley 23 of the centrifugal turntable spindle device 100;

[0181] The lower end face of the bakelite brake pad 15 is in contact with the upper end face of the brake chassis 16;

[0182] A brake support pedal 18 is installed below the brake chassis 16;

[0183] The small winch shaft 20 passes through the symmetrical shaft hole on the brake support pedal 18 and the symmetrical shaft hole on the brake chassis 16.

[0184] A brake bracket 21 is installed below the brake pedal 18;

[0185] The large hinge shaft 19 passes through the two symmetrical shaft holes on the two shaft seats in the middle of the bottom of the brake support pedal 18 and the two symmetrical shaft holes at the upper end of the two side support plates of the brake bracket 21.

[0186] A mounting base plate 22 is provided below the brake bracket 21, and the brake bracket 21 is fixed to the mounting base plate 22 by welding.

[0187] The hanging plate 13 is fixed to the bottom cavity door frame plate of the casting cavity 48 by welding;

[0188] The upper end of the brake spring 17 is hooked into the hanging hole of the hanging plate 13, and the lower end of the brake spring 17 is hooked into the hanging ear hole on the brake support pedal 18.

[0189] The braking torque applied to the pedal end of the brake support pedal 18 is transmitted to the brake chassis 16 and the bakelite brake pads 15 through the brake support pedal 18; the mechanical energy is consumed by the relative friction between the bakelite brake pads 15 and the driven pulley 23, thereby braking the centrifugal turntable spindle assembly 100.

[0190] The bakelite brake pad 15 is located directly below the driven pulley 23. The lower end face of the bakelite brake pad 15 is in contact with the upper end face of the brake chassis 16. The central axis of the inner cylindrical surface of the bakelite brake pad 15 coincides with the central axis of the inner cylindrical surface of the brake chassis 16. The bakelite brake pad 15 and the brake chassis 16 are fastened together by circumferentially distributed screws.

[0191] The brake pedal 18 is located below the brake chassis 16. Symmetrical shaft holes are provided on the two symmetrical frame edges of the brake pedal 18, and symmetrical shaft holes are provided on the two symmetrical shaft seats of the brake chassis 16, coaxial with the shaft holes on the brake pedal 18. The two symmetrical frame edges of the brake pedal 18 are respectively embedded in the middle of the two symmetrical shaft seats of the brake chassis 16. A small hinge shaft 20 passes through the symmetrical shaft holes on both the brake pedal 18 and the brake chassis 16. The small hinge shaft 20 is fixed to the brake chassis 16 by retaining springs at both ends. This connects the brake chassis 16 and the brake pedal 18 together, and also allows the brake chassis 16 and the brake pedal 18 to rotate relative to each other around the small hinge shaft 20.

[0192] The brake bracket 21 is located below the brake pedal 18. Two symmetrical shaft holes are provided at the upper ends of the support plates on both sides of the brake bracket 21. Two symmetrical shaft holes are provided on the two middle bearings at the bottom of the brake pedal 18, and are coaxial with the shaft holes on the brake bracket 21. The two symmetrical bearings at the bottom of the brake pedal 18 are embedded in the middle of the upper ends of the support plates on both sides of the brake bracket 21. The large hinge shaft 19 passes through the symmetrical shaft holes on the two middle bearings at the bottom of the brake pedal 18 and the two symmetrical shaft holes at the upper ends of the support plates on both sides of the brake bracket 21. The large hinge shaft 19 is fixed to the brake bracket 21 by retaining springs at both ends. This connects the brake pedal 18 to the brake bracket 21 and allows the brake pedal 18 to rotate relative to the large hinge shaft 19.

[0193] The mounting base plate 22 is located below the brake bracket 21, and the brake bracket 21 is fixed to the mounting base plate 22 by welding.

[0194] The hanging plate 13 is fixed to the bottom cavity door frame plate of the casting cavity 48 by welding. The hanging plate 13 has a hanging hole. The brake pedal 18 has a hanging ear near the pedal end. The upper end of the brake spring 17 is hooked into the hanging hole of the hanging plate 13, and the lower end of the brake spring 17 is hooked into the hanging ear hole on the brake pedal 18.

[0195] The braking torque applied to the brake pedal 18 is transmitted to the brake chassis 16 and the bakelite brake pads 15. Mechanical energy is dissipated through the relative friction between the bakelite brake pads 15 and the driven pulley 23, thus achieving the braking function of the centrifugal turntable device. When the braking torque at the brake pedal 18 is released, the brake pedal 18 returns to its pre-braking position under the tension of the brake spring 17, simultaneously causing the brake chassis 16 and the bakelite brake pads 15 to disengage downwards from the driven pulley 23, stopping the braking action.

[0196] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the inner cylindrical center axis of the bakelite brake pad 15 coincides with the inner cylindrical center axis of the brake chassis 16, and the bakelite brake pad 15 and the brake chassis 16 are fastened together by circumferentially distributed screws.

[0197] The brake pedal 18 has symmetrical shaft holes on its two symmetrical frame sides, and the brake chassis 16 has symmetrical shaft holes on its two symmetrical shaft seats, which are coaxial with the shaft holes on the brake pedal 18.

[0198] The two symmetrical frame edges of the brake pedal 18 are respectively embedded in the middle of the two symmetrical shaft seats of the brake chassis 16;

[0199] The small hinge 20 is fixed to the brake chassis 16 by the retaining springs at both ends of its own;

[0200] The small hinge 20 connects the brake chassis 16 and the brake pedal 18, causing the brake chassis 16 and the brake pedal 18 to rotate relative to each other around the small hinge 20.

[0201] The upper part of the two side support plates of the brake bracket 21 is provided with two symmetrical shaft holes, and the two shaft seats in the middle of the bottom of the brake bracket 21 are provided with symmetrical shaft holes and are coaxial with the shaft holes on the brake bracket 21; the two symmetrical shaft seats in the middle of the bottom of the brake pedal 18 are embedded in the middle of the upper part of the two side support plates of the brake bracket 21.

[0202] The large hinge shaft 19 is fixed to the brake bracket 21 by the retaining rings at both ends of its own;

[0203] The large hinge shaft 19 connects the brake support pedal 18 to the brake bracket 21, causing the brake support pedal 18 to rotate relative to the large hinge shaft 19.

[0204] The mounting plate 13 has a mounting hole; the brake pedal 18 has a mounting lug near the pedal end.

[0205] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the centrifugal disc drive device 300 also includes:

[0206] An asynchronous motor 30 is fixed on one side of the casting cavity 48, above the motor mounting plate 29;

[0207] The bottom plane of the mounting flange of the asynchronous motor 30 is in contact with the upper end face of the motor mounting pad 29; the protruding cylinder on the bottom plane of the mounting flange of the asynchronous motor 30 is embedded in the countersunk hole on the upper end face of the motor mounting pad 29; the bolt holes evenly distributed around the circumference of the mounting flange of the asynchronous motor 30 are aligned with the bolt holes evenly distributed around the circumference of the motor mounting pad 29.

[0208] The motor mounting plate 29 is located above the frame mounting plate of the centrifugal turntable frame 14;

[0209] The bottom plane of the motor mounting plate 29 is in contact with the upper surface of the frame mounting plate of the centrifugal turntable frame 14;

[0210] A drive pulley 28 is mounted on the motor shaft at the lower end of the asynchronous motor 30;

[0211] The two ends of the V-belt 25 are respectively fitted into the V-belt grooves of the driving pulley 28 and the driven pulley 23; the driving pulley 28 transmits torque to the driven pulley 23 through the V-belt 25;

[0212] A motor tensioning block 27 is provided near the side of the motor mounting plate 29 facing the driven pulley 23. The motor tensioning block 27 is provided with threaded holes and adjusting bolts 26. By changing the extension length of the adjusting bolts 26 on the motor tensioning block 27, the distance between the driving pulley 28 and the driven pulley 23 and the tension of the V-belt 25 can be adjusted.

[0213] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the bolt holes evenly distributed around the circumference of the motor mounting plate 29 are aligned with the waist-shaped grooves on the frame mounting plate of the centrifugal turntable frame 14; the asynchronous motor 30, the motor mounting plate 29, and the centrifugal turntable frame 14 are fastened together by bolts evenly distributed around the circumference; the lower end face of the drive pulley 28 is flush with the end face of the motor shaft at the lower end of the asynchronous motor 30, and the inner hole of the drive pulley 28 and the motor shaft at the lower end of the asynchronous motor 30 are both provided with keyways and connected by a flat key, and the asynchronous motor 30 transmits torque to the drive pulley 28 through the flat key.

[0214] To achieve the aforementioned technical effects, the centrifugal turntable device of the induction shell-forming furnace in this embodiment, such as... Figures 1-9 As shown, the solidification furnace mold shell 49 is fixed on the centrifugal turntable 2; the melting crucible 47 is located above the solidification furnace mold shell 49 and the centrifugal turntable 2 and is installed on the tilting device inside the melting and casting cavity, and can be driven by the tilting device to make a flipping motion.

[0215] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A centrifugal turntable apparatus for an induction skuller, characterized in that, include: Casting cavity (48); A solidification furnace mold shell (49) is provided inside the melting and casting cavity (48). Centrifugal turntable spindle assembly (100) is connected below the solidification furnace mold shell (49). Centrifugal turntable brake device (200) is provided below the centrifugal turntable main shaft device (100); the centrifugal turntable brake device (200) is used to brake the centrifugal turntable main shaft device (100) through mechanical friction; Centrifugal turntable drive device (300) is located on one side of centrifugal turntable main shaft device (100); the motor rotation power is transmitted to the centrifugal turntable main shaft device (100) through the belt pulley transmission pair device to make rotational motion, driving the solidification furnace mold shell (49) to perform centrifugal casting.

2. The centrifugal turntable apparatus of an induction skuller according to claim 1, characterized in that, Inside the casting chamber (48), above the centrifugal turntable spindle assembly (100), a melting crucible (47) is connected.

3. The centrifugal turntable apparatus of an induction skuller according to claim 1, characterized in that, The centrifugal turntable spindle assembly (100) also includes: Centrifugal turntable (2) is provided below the solidification furnace mold shell (49); Centrifugal disc baffle (1) is provided at the upper end of the centrifugal disc (2). Rotating shaft (46), the centrifugal turntable (2) is mounted on the upper end of the rotating shaft (46); Driven pulley (23) is fixedly connected to the lower end of rotating shaft (46), and the upper end face of driven pulley (23) is in contact with the shoulder of the lower end of rotating shaft (46). The threaded ring (33) is threadedly connected to the threaded stop at the lower part of the rotating shaft (46). In a cylindrical roller bearing (34), the upper end face of the threaded ring (33) is in contact with the lower end face of the inner ring of the cylindrical roller bearing (34). The lower end face of the threaded ring (33) of the double nut (32) is in contact with the upper end face of the double nut (32); the double nut (32) is threadedly connected to the threaded stop at the lower part of the rotating shaft (46); the double nut (32) and the threaded ring (33) work together to transmit an upward fastening force along the rotating shaft (46) to the inner ring of the cylindrical roller bearing (34); Spacer ring (36), the spacer ring (36) is fixed on the rotating shaft (46); Cylindrical roller bearing (34), wherein the lower end face of the spacer ring (36) is in contact with the upper end face of the inner ring of the cylindrical roller bearing (34). Self-aligning roller bearing (38), wherein the upper end face of the spacer ring (36) is in contact with the lower end face of the inner ring of the self-aligning roller bearing (38); The cylindrical roller bearing (34) is fixed in the bearing hole at the lower end of the bearing housing (8). The lower end face of the outer ring of the cylindrical roller bearing (34) is in contact with the upper end face of the top ring (31); the outer ring of the cylindrical roller bearing (34) is firmly fixed in the bearing hole at the lower end of the bearing housing (8). The inner cylindrical surface of the cylindrical roller bearing (34) is in contact with the cylindrical surface of the bearing stop at the lower end of the rotating shaft (46). Spacer ring (36), the upper end face of the inner ring of the cylindrical roller bearing (34) is in contact with the lower end face of the spacer ring (36); The lower end face of the inner ring of the cylindrical roller bearing (34) is in contact with the upper end face of the threaded ring (33), and the inner ring of the cylindrical roller bearing (34) is fastened to the rotating shaft (46). Spacer (37) is fixed in the bearing hole at the upper end of the bearing housing (8); the lower end face of the spacer (37) is in contact with the bottom surface of the bearing hole at the upper end of the bearing housing (8); The upper end face of the spacer (37) of the self-aligning roller bearing (38) is in contact with the lower end face of the outer ring of the self-aligning roller bearing (38); The dust cover mounting plate base (4) has the upper end face of the outer ring of the self-aligning roller bearing (38) in contact with the lower end face of the dust cover mounting plate base (4); Spacer (37), the lower end face of the outer ring of the self-aligning roller bearing (38) is in contact with the upper end face of the spacer (37); the outer ring of the self-aligning roller bearing (38) is firmly clamped in the bearing hole at the upper end of the bearing housing (8); The inner ring cylindrical surface of the self-aligning roller bearing (38) is in contact with the bearing stop cylindrical surface at the upper end of the rotating shaft (46); Spacer ring (36), the lower end face of the inner ring of the self-aligning roller bearing (38) is in contact with the upper end face of the spacer ring (36); the inner ring of the self-aligning roller bearing (38) is fastened to the rotating shaft (46); The bearing housing is fixed plate (6), and the bearing housing (8) is welded to the bearing housing fixed plate (6). The bearing housing (8) is fixed on the upper end face of the bearing housing lower fixing plate (12). Centrifugal turntable frame (14), the bearing seat lower fixing plate (12) is fixed on the frame mounting plate of the centrifugal turntable frame (14). Top ring (31) is fixed in the large hole of the lower fixing plate (12) of the bearing seat. The upper end face of the edge of the top ring (31) is in contact with the lower end face of the inner side of the lower fixing plate (12) of the bearing seat, and the top ring (31) is fastened to the lower fixing plate (12) of the bearing seat by screws evenly distributed in the circumferential direction. The dust cover mounting plate base (4) is fixed above the rotating shaft (46). The bearing seat upper fixing plate (6) is used to fix the dust cover mounting plate base (4) above the bearing seat upper fixing plate (6). Dust cover mounting plate (3), the dust cover mounting plate (3) is fixed above the dust cover mounting plate base (4); Dust cover (5), the dust cover (5) is fixed above the dust cover mounting plate (3), and the inner hole center axis of the dust cover (5) coincides with the inner hole center axis of the dust cover mounting plate (3); A corrugated pipe dust cover (7) is fixed below the dust cover (5); The lower end face of the outer cylindrical ring of the corrugated pipe dust cover (7) is attached to the upper end face of the cavity bottom plate (9); The outer cylindrical surface of the lower end of the inner cylindrical ring of the upper sealing plate (10) is in contact with the inner cylindrical surface of the upper sealing plate (10); the upper end of the inner hole of the corrugated pipe dust cover (7) is fitted and attached to the outer cylindrical surface of the dust cover mounting plate (3). The lower sealing plate (11) is installed above the upper sealing plate (10). The inner hole center axis of the upper sealing plate (10) coincides with the inner hole center axis of the lower sealing plate (11). The lower end face of the upper sealing plate (10) is attached to the upper end face of the lower sealing plate (11). The upper sealing plate (10) and the lower sealing plate (11) are fastened together by circumferentially distributed screws. The lower sealing plate (11) is connected and fixed to the casting cavity (48) by welding. The upper end face of the outer edge of the lower sealing plate (11) is in contact with the lower end face of the seamless steel pipe at the bottom of the casting cavity (48). The inner hole center axis of the lower sealing plate (11) coincides with the inner hole center axis of the seamless steel pipe at the bottom of the casting cavity (48). The second dustproof structure is formed by the dust cover mounting plate (3), the corrugated pipe dust cover (7), the upper sealing plate (10), the lower sealing plate (11), the seamless steel pipe of the casting cavity (48), and the cavity bottom plate (9), which prevents dust and debris in the casting cavity (48) from entering the centrifugal turntable spindle device (100).

4. The centrifugal turntable apparatus of an induction skuller according to claim 3, characterized in that, The centrifugal disc baffle (1) is fixed in the countersunk hole at the upper end of the centrifugal disc (2) and is fastened to the rotating shaft (46) by a screw located at the center of the upper end of the rotating shaft (46); The centrifugal turntable (2) is fitted onto the upper end of the rotating shaft (46); the lower end face of the centrifugal turntable (2) is in contact with the shoulder of the upper end of the rotating shaft (46), and is fastened to the rotating shaft (46) by bolts located on the lower cylindrical ring of the centrifugal turntable (2); The inner hole of the driven pulley (23) and the lower end of the rotating shaft (46) are both provided with keyways and connected by a flat key; the driven pulley (23) transmits torque to the rotating shaft (46) through the flat key, and the rotating shaft (46) then transmits torque to the centrifugal turntable (2), which drives the solidification furnace mold shell (49) fixed on the centrifugal turntable (2) to rotate and perform centrifugal casting of the solidification furnace; The spacer ring (36) transmits a downward fastening force along the rotation axis (46) to the inner ring of the cylindrical roller bearing (34), and at the same time transmits an upward fastening force along the rotation axis (46) to the inner ring of the self-aligning roller bearing (38). The outer cylindrical surface of the cylindrical roller bearing (34) is in contact with the inner cylindrical surface of the bearing hole at the lower end of the bearing housing (8); the upper surface of the outer ring of the cylindrical roller bearing (34) is in contact with the bottom surface of the bearing hole at the lower end of the bearing housing (8). The self-aligning roller bearing (38) is fixed in the bearing hole at the upper end of the bearing housing (8); the outer ring cylindrical surface of the self-aligning roller bearing (38) is in contact with the inner cylindrical surface of the bearing hole at the upper end of the bearing housing (8). The upper end face of the inner ring of the self-aligning roller bearing (38) is in contact with the lower end face of the bearing shoulder at the upper end of the rotating shaft (46); The inner edge of the lower end face of the upper fixing plate (6) of the bearing seat is in contact with the upper end face of the bearing seat (8), and the inner hole center axis of the upper fixing plate (6) of the bearing seat coincides with the inner hole center axis of the bearing seat (8). The inner hole center axis of the bearing seat (8) coincides with the inner hole center axis of the bearing seat lower fixing plate (12), and the bearing seat (8) and the bearing seat lower fixing plate (12) are fixedly connected by welding. The lower end of the bearing seat lower fixing plate (12) has a protruding cylindrical part that is embedded in the large hole of the frame mounting plate of the centrifugal turntable frame (14). The lower end face of the outer edge of the bearing seat lower fixing plate (12) is in contact with the upper end face of the frame mounting plate of the centrifugal turntable frame (14), and the bearing seat lower fixing plate (12) and the centrifugal turntable frame (14) are fastened together by circumferentially distributed screws. The inner hole center axis of the dust cover mounting plate base (4) coincides with the inner hole center axis of the bearing seat upper fixing plate (6); the lower end face of the flange of the dust cover mounting plate base (4) is attached to the upper end face of the bearing seat upper fixing plate (6), and the dust cover mounting plate base (4) and the bearing seat upper fixing plate (6) are fastened together by circumferentially distributed screws. The inner hole center axis of the dust cover mounting plate (3) coincides with the inner hole center axis of the dust cover mounting plate base (4); the lower end face of the dust cover mounting plate (3) is attached to the upper end face of the flange of the dust cover mounting plate base (4), and the dust cover mounting plate (3) and the dust cover mounting plate base (4) are fastened together by circumferentially distributed screws. The lower surface of the dust cover (5) is attached to the upper end face of the dust cover mounting plate (3); and the dust cover (5) and the dust cover mounting plate (3) are fastened together by circumferentially distributed screws; the dust cover (5) isolates the casting cavity (48) from the part below the upper end of the rotating shaft (46); To prevent dust and debris in the casting cavity (48) from entering the centrifugal turntable spindle device (100).

5. The centrifugal turntable apparatus of an induction skuller according to claim 3, characterized in that, The centrifugal turntable spindle assembly (100) also includes: The first O-ring (35) is provided on the lower end face of the upper sealing plate (10), and the first O-ring (35) is pressed by the lower sealing plate (11) in the annular groove on the lower end face of the upper sealing plate (10); The second O-ring seal (39) is provided on the upper end face of the fixing plate (6) on the bearing seat. The second O-ring seal (39) is pressed by the dust cover mounting plate base (4) into the annular groove on the upper end face of the fixing plate (6) on the bearing seat. The third O-ring (40) is provided on the upper surface of the dust cover mounting plate base (4). The third O-ring (40) is pressed by the dust cover mounting plate (3) in the annular groove on the upper surface of the dust cover mounting plate base (4). The fourth O-ring seal (41) is provided on the outer cylindrical surface of the inner edge of the flange lower end face of the dust cover mounting plate base (4) and the fourth O-ring seal (41) is pressed by the fixing plate (6) on the bearing seat into the annular groove of the outer cylindrical surface of the inner edge of the flange lower end face of the dust cover mounting plate base (4). A pressure ring (45) is fixed in the first step below the upper end face of the dust cover mounting plate base (4); the lower end face of the flange of the pressure ring (45) is in contact with the first step below the upper end face of the dust cover mounting plate base (4), and the pressure ring (45) and the dust cover mounting plate base (4) are fixed by screws evenly distributed in the circumferential direction; A sealing ring (44) is fixed in the second step below the upper end face of the dust cover mounting plate base (4); the outer cylindrical surface of the sealing ring (44) is in contact with the inner cylindrical surface of the second step below the upper end face of the dust cover mounting plate base (4). The sixth O-ring seal (43) is provided below the pressure ring (45); under the clamping force of the pressure ring (45), the sixth O-ring seal (43) is pressed into the space surrounded by the pressure ring (45), the dust cover mounting plate base (4), the sealing spacer (44), and the rotating shaft (46); The fifth O-ring seal (42) is provided below the sealing spacer (44). Under the pressing force of the sealing spacer (44), the fifth O-ring seal (42) is pressed into the space surrounded by the sealing spacer (44), the dust cover mounting plate base (4), and the rotating shaft (46).

6. The centrifugal turntable apparatus for an induction skuller as recited in claim 1, wherein The centrifugal disc brake device (200) includes: A bakelite brake pad (15) is provided directly below the driven pulley (23) of the centrifugal turntable spindle device (100). Brake chassis (16), the lower end face of the bakelite brake pad (15) is in contact with the upper end face of the brake chassis (16); Brake support pedal (18) is provided below the brake chassis (16). Small hinge shaft (20), the small hinge shaft (20) passes through the symmetrical axis hole on the brake support pedal (18) and the symmetrical axis hole on the brake chassis (16); Brake bracket (21) is provided below the brake pedal (18); The large shaft (19) passes through the two symmetrical shaft holes on the two shaft seats in the middle of the bottom of the brake support pedal (18) and the two symmetrical shaft holes on the upper part of the two side support plates of the brake bracket (21). The mounting base plate (22) is installed below the brake bracket (21), and the brake bracket (21) is fixed to the mounting base plate (22) by welding. Hanging plate (13), the hanging plate (13) is fixed to the bottom cavity door frame plate of the casting cavity (48) by welding; Brake spring (17), the upper end of the brake spring (17) is hooked into the hanging hole of the hanging plate (13), and the lower end of the brake spring (17) is hooked into the hanging ear hole on the brake support pedal (18); The braking torque applied to the pedal end of the brake support pedal (18) is transmitted to the brake chassis (16) and the bakelite brake pad (15) through the brake support pedal (18); the mechanical energy is consumed by the relative friction between the bakelite brake pad (15) and the driven pulley (23), thereby braking the centrifugal turntable spindle device (100).

7. The centrifugal rotary table device for the induction shell furnace according to claim 6, characterized in that, The inner cylindrical center axis of the bakelite brake pad (15) coincides with the inner cylindrical center axis of the brake chassis (16), and the bakelite brake pad (15) and the brake chassis (16) are fastened together by circumferentially distributed screws. The brake pedal (18) has symmetrical shaft holes on its two symmetrical frame sides, and the brake chassis (16) has symmetrical shaft holes on its two symmetrical shaft seats and is coaxial with the shaft holes on the brake pedal (18). The two symmetrical frame edges of the brake pedal (18) are respectively embedded in the middle of the two symmetrical shaft seats of the brake chassis (16); The small hinge (20) is fixed to the brake chassis (16) by the snap rings at both ends of its own; The small hinge (20) connects the brake chassis (16) and the brake pedal (18), causing the brake chassis (16) and the brake pedal (18) to rotate relative to each other around the small hinge (20). The brake bracket (21) has two symmetrical shaft holes on the upper end of the two side support plates. The brake pedal (18) has two symmetrical shaft holes on the middle of the bottom and is coaxial with the shaft holes on the brake bracket (21). The two symmetrical shaft holes at the middle of the bottom of the brake pedal (18) are embedded in the middle of the upper end of the two side support plates of the brake bracket (21). The large hinge shaft (19) is fixed to the brake bracket (21) by the retaining rings at both ends of its own; The large hinge shaft (19) connects the brake pedal (18) to the brake bracket (21), causing the brake pedal (18) to rotate relative to the large hinge shaft (19). The hanging plate (13) has a hanging hole; the brake pedal (18) has a hanging lug near the pedal end.

8. The centrifugal rotary table device for the induction shell furnace according to claim 1, characterized in that, The centrifugal disc drive device (300) further includes: An asynchronous motor (30) is fixed on one side of the casting cavity (48) above a motor mounting plate (29). The bottom plane of the mounting flange of the asynchronous motor (30) is in contact with the upper end face of the motor mounting pad (29); the protruding cylinder on the bottom plane of the mounting flange of the asynchronous motor (30) is embedded in the countersunk hole on the upper end face of the motor mounting pad (29); the bolt holes evenly distributed around the mounting flange of the asynchronous motor (30) are aligned with the bolt holes evenly distributed around the mounting pad (29). The motor mounting plate (29) is located above the frame mounting plate of the centrifugal turntable frame (14); The bottom plane of the motor mounting plate (29) is in contact with the upper surface of the frame mounting plate of the centrifugal turntable frame (14); The drive pulley (28) is mounted on the motor shaft at the lower end of the asynchronous motor (30). A V-belt (25) is fitted into the two ends of the V-belt (25) in the V-belt grooves of the driving pulley (28) and the driven pulley (23), respectively; the driving pulley (28) transmits torque to the driven pulley (23) through the V-belt (25). A motor mounting plate (29) is provided with a motor tensioning block (27) near the side of the motor mounting plate (29) facing the driven pulley (23). The motor tensioning block (27) is provided with a threaded hole and an adjusting bolt (26). By changing the extension length of the adjusting bolt (26) on the motor tensioning block (27), the distance between the driving pulley (28) and the driven pulley (23) and the tension of the V-belt (25) are adjusted.

9. The centrifugal turntable apparatus of an induction skuller according to claim 8, characterized in that, The bolt holes evenly distributed around the circumference of the motor mounting plate (29) are aligned with the waist-shaped grooves on the frame mounting plate of the centrifugal turntable frame (14); the asynchronous motor (30), the motor mounting plate (29), and the centrifugal turntable frame (14) are fastened together by bolts evenly distributed around the circumference; the lower end face of the drive pulley (28) is flush with the motor shaft end face at the lower end of the asynchronous motor (30), and the inner hole of the drive pulley (28) and the motor shaft head at the lower end of the asynchronous motor (30) are both provided with keyways and connected by flat keys, and the asynchronous motor (30) transmits torque to the drive pulley (28) through the flat key.

10. The centrifugal turntable apparatus of an induction skuller furnace according to claim 1, characterized in that, The solidification furnace mold shell (49) is fixed on the centrifugal turntable (2); the melting crucible (47) is located above the solidification furnace mold shell (49) and the centrifugal turntable (2) and is installed on the tilting device in the melting and casting cavity, and can be driven by the tilting device to make a flipping motion.

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