CN110919288A - Converter trunnion ring trunnion on-site repairing device and method - Google Patents
Converter trunnion ring trunnion on-site repairing device and method Download PDFInfo
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- CN110919288A CN110919288A CN201911175268.8A CN201911175268A CN110919288A CN 110919288 A CN110919288 A CN 110919288A CN 201911175268 A CN201911175268 A CN 201911175268A CN 110919288 A CN110919288 A CN 110919288A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a converter trunnion ring trunnion on-site repair device and a method, wherein the repair device comprises a fixed shaft, a driving end disc, a driven end disc and a connecting rod, wherein the driving end disc, the driven end disc and the connecting rod can rotate around the fixed shaft, a workpiece is arranged between the driving end disc and the driven end disc to process a trunnion, the repair method is that the driving end disc and the driven end disc rotate to drive the workpiece to process the trunnion, and positions of turning tool supports are controlled to realize the processing of trunnions at different length positions.
Description
Technical Field
The invention belongs to the technical field of processing equipment, and particularly relates to a converter trunnion ring trunnion on-site repairing device and method.
Background
The converter is one of steel-making furnaces, generally refers to a tiltable net-cylinder oxygen-blowing vessel, the driving end of which is connected with a tilting speed reducer to drive the converter to rotate, and the converter generally has 50 tons, 80 tons, 120 tons, 160 tons, 180 tons and the like according to the volume design tonnage. The converter is the main equipment of steel mill, in the production process, because of the operational environment is abominable, need bear several hundred tons of weight, and be in under the high temperature environment, therefore the bearing part trunnion of equipment can receive wearing and tearing in long-term working process, and the converter requires for the concentricity of trunnion higher, in case wear out and tear and exceed certain degree and will influence the normal production of equipment, especially transmission position, in case driven gear hole and trunnion clearance are too big, will skid, can't pour out the molten steel that is smelted, influence production, just must change this moment. Converter trunnion and converter trunnion are through the welded mode hookup together, the trunnion ring is a diameter and reaches the cylindric component more than five meters, and weight reaches more than fifty tons, the both ends welding of trunnion is in the trunnion ring both sides, after the bearing position of trunnion or gear fixed position take place wearing and tearing, because of the work piece volume is huge, need the turning diameter to be in lathe processing more than 5 meters, and because can't long-distance transport, generally can only carry out simple restoration through the mode of local repair welding back manual polishing again, nevertheless manual polishing often can not guarantee size precision, therefore this kind of mode can only guarantee the temporary of production as emergent processing mode, can't solve the problem fundamentally. Once the abrasion is too large, the whole trunnion ring can only be scrapped, and a new trunnion ring must be replaced. Because the trunnion ring has huge volume, high price and long production period, the whole replacement causes great pressure on the production and cost of a steel plant. Therefore, the development of the device and the method for repairing the trunnion of the trunnion ring on site has great significance for reducing the cost of a steel plant and ensuring the normal production.
Disclosure of Invention
The invention discloses a converter trunnion ring on-site repairing device and method, which can carry out rotary processing and repairing on a converter trunnion ring on site, can improve the repairing speed and precision, and can reduce the cost of a steel plant.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an on-site repair device for a trunnion of a converter trunnion ring, comprising:
one end of the fixed shaft is coaxially connected with the concentric sleeve, and the concentric sleeve can be matched with and fix the trunnion;
the driving end disc is arranged at the other end of the fixed shaft, is coaxial with the fixed shaft, and is driven to rotate by a driving device which is controlled by the controller;
the driven end disc is parallel to the driving end disc and coaxial with the fixed shaft, and a through hole is formed in the middle of the driven end disc and used for accommodating the trunnion to pass through;
the two connecting rods are arranged at least, two ends of each connecting rod are respectively connected with the driving end disc and the driven end disc, and the connecting rods are distributed in an annular array around the circle center of the driving end disc;
the center adjusting devices are at least two and are fixed on the same side surface of the driven end disc, distributed in an annular array around the circle center of the driven end disc, and the distance between the center adjusting devices is adjustable so that the trunnions and the concentric sleeves are coaxial;
processingequipment, its both ends are connected with initiative end disc and driven end disc respectively, including lathe tool support, lathe tool rest and machined part, the both ends of lathe tool support are connected with initiative end disc and driven end disc respectively, and are parallel with fixed axle center, are provided with the guide rail above the lathe tool support, the lathe tool rest can be controlled on the guide rail and move, the machined part can be dismantled with the lathe tool rest and be connected
Preferably, the machining device further comprises a lathe saddle driving motor, a screw rod and a screw nut, the lathe saddle driving motor is controlled by a controller and drives the screw rod to move, the screw rod is matched with the screw nut, and the screw nut drives the lathe saddle to move;
the relative position of the workpiece and the turning tool rest can be adjusted, so that the workpiece can be matched with trunnions with different sizes and shapes
Preferably, the inner end of the aligning device is provided with a roller.
Preferably, the aligning device comprises a sleeve, a push rod and a roller, one side of the sleeve is connected with the driven end disc, the push rod axially penetrates through a sleeve hole of the sleeve and can move relative to the sleeve, and the inner end of the push rod is in rolling connection with the roller;
the sleeve is provided with a sleeve screw hole communicated with the sleeve hole from the outer side surface, and a fastening screw rod is arranged in the sleeve screw hole in a matched mode.
Preferably, the number of the connecting rods is even, and a balancing weight is matched on one of the connecting rods which is arranged opposite to the processing device.
Preferably, one side of the concentric sleeve, which is far away from the fixed shaft, is provided with a trunnion socket, and the trunnion socket can be inserted into a trunnion in a matching manner and fixes the trunnion.
Preferably, the adjustable clamp also comprises a fine adjustment screw, a concentric sleeve screw hole is formed in the side surface, connected with the fixed shaft, of the concentric sleeve in a penetrating mode, the concentric sleeve screw hole is communicated with the trunnion socket, and the fine adjustment screw can be matched with the concentric sleeve screw hole to be screwed in or out.
The invention also provides a converter trunnion ring trunnion on-site repairing method, which comprises the following steps:
s1, surfacing the worn part of the trunnion of the backing ring of the converter; heating before welding and heating after welding to eliminate welding stress.
S2, after the converter trunnion ring is naturally cooled, polishing by using a converter trunnion ring on-site repairing device, enabling the trunnion ring to penetrate through a driven end disc, and fixing the end part of the trunnion ring in a concentric sleeve;
s3, correcting the concentricity of the trunnion and the driven end disc by adjusting the distance between the aligning devices, and ensuring that the concentricity of the trunnion and the driven end disc is qualified;
s4, adjusting the turning tool support to be parallel to the axis of the shaft neck to be processed, and installing a machined part on the turning tool support after ensuring the parallelism;
and S5, starting the driving device, enabling the driving end disc and the driven end disc to rotate to drive the machined part to machine the trunnion, and controlling the position of the turning tool support to machine the trunnions at different length positions.
Further, in step S5, the processing specifically includes:
s51, roughly turning a machined part by using a turning tool, and roughly turning an trunnion according to a multi-layer fast-forward principle, wherein the single-layer feed amount is within 0.5 mm, and the rotating speed is 6-15 r/min;
s52, when the workpiece is processed to the standard size of + 0.3-0.5 mm, finely turning a layer of 0.1-0.2 mm at a rotating speed of 20-30 r/min;
s53, measuring the size of the machined part after finish turning, checking the concentricity and the straightness of the trunnion, ensuring that the concentricity and the diameter deviation of the machined part do not exceed the use requirements, and eliminating the concentricity and the diameter deviation by finely adjusting the angle of a turning tool or a turning tool rest if the phenomenon of large and small heads is found;
s54, replacing the machined part with a grinding wheel to perform online grinding after the requirement of the finish turning size is met, wherein the single feed amount is 0.01-0.03 mm during grinding, and the rotating speed is 35-45 r/min until the trunnion is ground to the required size
The converter trunnion ring trunnion on-site repairing device has the following advantages:
1. simple structure, simple to operate, and can guarantee the concentricity of processing equipment and axle journal to the position precision that makes the processing come out is high, can not appear because of driven plate and the phenomenon such as ellipse, distortion that the initiative dish decentraction caused.
2. Furthermore, the tool rest can be adjusted in angle according to the machining requirements, and complex structures such as conical surfaces can be machined from the surface.
3. Furthermore, the invention is matched with the balancing weight, so that the opposite side of the processing device keeps the same weight with the processing device, compared with cantilever type processing equipment, the equipment has higher processing stability and better precision, is particularly suitable for processing positions with longer distance from the axis head, and can not generate the problems of cutter vibration, ellipse and the like caused by overlarge distance.
4. The adaptability is strong, the processing range is wide, the universality is better, and the shafts with different sizes can be processed.
The repair device is used for repairing the trunnion of the converter trunnion ring on site, the worn trunnion ring can be repaired and reused, the problem that the trunnion of the converter trunnion ring cannot be machined after being worn is solved, the front and rear bearing positions and the transmission gear wheel matching position of the trunnion can be repaired through the method, the repaired precision completely meets the use requirement, a large amount of maintenance cost can be saved for a steel plant, the waste of a large amount of resources is reduced, and the cyclic utilization of the resources is realized.
Drawings
FIG. 1 is a schematic structural diagram of a converter trunnion ring trunnion on-site repairing device.
Fig. 2 is a schematic structural view of the aligning device.
In the figure, a controller 1, a control line 2, a driving device 3, a driving end disc 4, a fine adjustment screw 5, a concentric sleeve 6, a balancing weight 7, a centering device 8, a push rod 81, a sleeve 82, a roller 83, a rotating shaft 84, a fastening screw 85, a driven end disc 9, a shaft neck 10, a guide rail 11, a machined part 12, a connecting rod 13, a lathe tool rest 14, a concentric disc 15, a lathe tool rest driving motor 16, a lathe tool support 17 and a fixed shaft 18.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited to the following examples.
An in-line journal processing apparatus comprising: the fixed shaft 17, the concentric sleeve 6, the driving end disc 4, the driving device, the controller 1, the fixed shaft 17, the driven end disc 9, the connecting rod 13, the centering device and the processing device are described in detail below with reference to fig. 1: one end of the fixed shaft 17 is coaxially connected with one side of the concentric sleeve 6, and the other side of the concentric sleeve 6 can be matched with the fixed journal 10; the driving end disc 4 is arranged at the other end of the fixed shaft 17, is coaxial with the fixed shaft 17, and is driven to rotate by a driving device which is controlled by the controller 1; the driven end disc 9 is parallel to the driving end disc 4 and coaxial with the fixed shaft 17, a through hole is formed in the middle of the driven end disc 9 and used for accommodating a shaft neck 10 to penetrate through, and the shaft neck 10 is an object to be repaired of the processing equipment; the two connecting rods 13 are arranged at least, two ends of each connecting rod are respectively connected with the driving end disc 4 and the driven end disc 9, and the connecting rods are distributed in an annular array around the circle center of the driving end disc 4 and have the function of ensuring that the driving end disc 4 and the driven end disc 9 are coaxially fixed; the aligning devices are at least two, are fixed on the same side surface of the driven end disc 9, are distributed in an annular array around the circle center of the driven end disc 9, and have adjustable intervals so that the shaft neck 10 is coaxial with the concentric sleeve 6; the processing device, the two ends of which are respectively connected with the driving end disc 4 and the driven end disc 9, comprises a processing piece 12 facing inwards for processing the shaft neck 10. The driving end disc 4, the driven end disc 9, the fixed shaft 18 and the concentric sleeve 6 in the processing equipment are coaxial.
Specifically, drive arrangement mainly includes worm gear reduction gear and initiative end plate driving motor, and initiative end plate driving motor is provided with fixing base or safety cover, and the other end of fixed axle 17 is fixed in a side of fixing base or safety cover, and the output shaft of motor passes through worm gear reduction gear and is connected with initiative end plate 4, drives initiative end plate 4 rotatory.
The number of the connecting rods 13 and the aligning devices is generally an even number, and two or four is more suitable, because the even number is set to better keep the balance of the upper weight and the lower weight in the rotating process, and certainly three can be set according to the requirement. In the present embodiment, four connecting rods 13 and 4 centering devices are provided, and shown in the figure are two upper and lower connecting rods 13, two upper and lower centering devices, and the front and rear connecting rods 13 and the centering devices are not shown in the schematic structural diagram.
Preferably, this embodiment provides a specific structure of a processing device, the processing device includes a turning tool support 17, a turning tool holder 14 and a workpiece 12, two ends of the turning tool support 17 are respectively connected with the driving end disc 4 and the driven end disc 9, and are parallel to the axis of the fixed shaft, a guide rail 11 is provided on the turning tool support 17, of course, the guide rail 11 is also parallel to the axis of the fixed shaft, the turning tool holder 14 can move left and right on the guide rail 11, and the workpiece 12 is detachably connected with the turning tool holder 14. Since the lathe tool holder 14 can travel on the guide rail 11, different journal positions can be repaired by moving left and right. The workpiece 12 and the turning tool holder 14 are detachably connected, so that different workpieces can be selected, such as a turning tool or a grinding mechanism, the grinding mechanism can be a grinding wheel to meet different repairing or grinding requirements, and the connection mode can be various, such as rotating shaft connection, bolt connection and the like.
More preferably, the embodiment further provides a structure capable of controlling the movement of the turning tool holder, the processing device further comprises a turning tool holder driving motor 16, a lead screw and a lead screw nut, the turning tool holder driving motor 16 is controlled by the controller 1 to drive the lead screw to move, the lead screw is matched with the lead screw nut, the lead screw nut drives the turning tool holder 14 to move, and the lead screw can drive the workpiece to move between the driving end disc 4 and the driven end disc 9. The driving motor 16 of the turning tool rest can adopt a stepping motor, the stepping motor has small volume, high rotating speed and convenient speed regulation, and the motor, a screw rod and a screw nut drive the turning tool rest to move, which is the prior art and is not detailed here.
More preferably, the relative position of the workpiece 12 and the lathe tool holder 14 is adjustable, so that the workpiece 12 can be matched with and machined on journals 10 with different sizes and shapes, namely, a manual feeding device, an automatic feeding device or a sliding groove arranged in the lathe tool holder 14 can be matched with and moved by the workpiece 12, and a fixing part is arranged to fix the workpiece.
Preferably, the embodiment further provides a specific structure of the aligning device 8, the inner end of the aligning device 8 is provided with a roller, generally, when in use, the axis of the roller 83 is adjusted to be parallel to the axis of the concentric sleeve 6, and the shaft neck 10 inserted between the aligning devices is coaxial with the driven end disc 9, so that the processing precision can be ensured, and simultaneously, due to the existence of the roller 83, the shaft neck 10 can be prevented from being damaged, and the rotation of the shaft neck 10 can not be hindered.
More specifically, the aligning device 8 includes a sleeve 82, a push rod 81 and a roller 83, one side of the sleeve 82 is connected with the driven end disc 9, i.e. fixed on one side of the driven end disc 9, which may be an inner side facing the driving end disc 4 or an outer side, and of course, the adjusting device 8 disposed on the inner side can be better protected from being damaged during processing. The push rod 81 axially penetrates through a sleeve hole of the sleeve 82 and can move relative to the sleeve 82, the inner end of the push rod 81 is connected with the roller 83 in a rolling mode, the distance between the rollers 83 can be adjusted through the movement of the push rod 81, and therefore the control journal 10 and the driven end disc 9 are coaxial. Push rod 81 and sleeve 82 can be threaded connection, also can cup joint, certainly, the structure of cup jointing need be fixed push rod 81 when using, and this embodiment provides an preferred mode, and sleeve 6 sets up the sleeve screw of intercommunication trepanning from the lateral surface, matches in the sleeve screw and sets up fastening screw 85, and fastening screw 85 screw in trepanning top tight push rod 81 can be fixed with it.
Preferably, in order to keep the overall balance of the equipment during the rotating process, the number of the connecting rods 13 is even, the processing device is arranged above one of the connecting rods 13 (the lower connecting rod 13 is shown in the figure), and the balancing weight 7 is matched on the connecting rod 13 (the upper connecting rod 13 is shown in the figure) which is arranged opposite to the processing device. The counterweight 7 can be fixed on the connecting rod 13, or the counterweight 7 can be directly replaced by the connecting rod 13.
Preferably, the workpiece is driven by a workpiece driving motor, the workpiece driving motor is controlled by the controller 1, and the work of the workpiece is also controlled by the controller 1.
Preferably, the present embodiment provides a communication sleeve 6 structure facilitating fixing of the journal 10, and a side of the concentric sleeve 6 away from the fixed shaft 18 is provided with a journal socket capable of being inserted into the journal 10 in a matching manner and fixing the journal 10. More preferably, still including fine setting screw 5, concentric cover 6 wears to be equipped with concentric cover screw with the side that fixed axle 18 is connected, concentric cover screw and axle journal socket intercommunication, fine setting screw 5 can match screw in or screw out in concentric cover screw, fine setting screw 5 can be provided with 1 as required, 2, perhaps 4, screw in through fine setting screw 5 screws out, can finely tune the angle of axle journal 10 tip to better assurance axle journal 10 and concentric cover are with the axle center. The fine adjustment screw 5 can be directly arranged on the concentric sleeve 6 or can be arranged through a concentric disc, the concentric disc and the concentric sleeve are coaxial, the fixed shaft 17 penetrates through the center of the concentric disc to fix the concentric disc, a hole is formed in the concentric disc to accommodate the fine adjustment screw 5 to penetrate, the fine adjustment screw 5 penetrates through the concentric disc 15 and then is screwed into the screw hole of the concentric sleeve, and the fine adjustment screw 5 can not be screwed into the screw hole of the concentric sleeve when not needed.
The controller passes through the control line and links to each other with initiative end disc driving motor, lathe saddle driving motor, machined part driving motor, for guaranteeing that control line and electric wire do not wind, the fixed axle 17 of this embodiment is the hollow shaft, mainly be used for fixing a position and provide the passageway of threading for the sliding ring, and the sliding ring has still been set up, sliding ring and drive arrangement, initiative end disc 4 is coaxial, it mainly provides control communication and power transmission for the motion of initiative end disc, lathe saddle and machined part etc. to lead electrical slip ring, guarantee that the cable is unlikely to appear fracture and wind the knot at rotatory in-process, sliding ring one end is fixed in on fixed axle 17, the other end rotates together with initiative end disc 4, provide the passageway of being no less than 10 ways. Slip rings are prior art and will not be described in detail herein.
The driven end disc 9 and the driving end disc 4 are fixedly connected through a connecting rod 13 to form a cage-shaped structure capable of rotating around a part to be processed, a plurality of movable rollers are mounted on the inner side of the driven end disc 9, the concentricity of the driven end disc 9 and a shaft neck 10 can be adjusted by adjusting the distance of the rollers, the driving end disc 4 is connected with a driving device and is arranged on the outer side of the end part of the shaft neck 10, different concentric sleeves 6 are matched according to the different sizes of the end part of the shaft neck 10 to fix the end part of the shaft neck 10, the concentricity of the end part of the shaft neck 10 and the driving end disc is ensured, and the end part of the shaft neck 10 and the concentric sleeves are coaxial by ensuring that the end part of the shaft neck 10 and the concentric sleeves are coaxial, and the shaft neck 10 is fixed by the rollers and is coaxial with the driven end disc 9. The driving end disc driving motor, the machined part driving motor and the turning tool rest driving motor 16 are controlled by the stepping motors more accurately, the three are controlled by the controller, the whole machining equipment can be guaranteed to automatically rotate around a shaft at an ideal speed, and a turning tool automatically feeds in a specified direction or a grinding mechanism automatically grinds at a certain speed.
The method for repairing the trunnion of the backing ring of the converter on site by adopting the device comprises the following steps:
s1, overlaying welding is carried out on the abrasion part of a trunnion of a backing ring of the converter; heating before welding and heating after welding to eliminate welding stress.
And S2, after the converter trunnion ring is naturally cooled, polishing the converter trunnion ring by using a converter trunnion ring on-site repairing device, enabling the trunnion ring to penetrate through a driven end disc, and fixing the end part of the trunnion ring in a concentric sleeve which is tightly matched with the end part of the trunnion ring.
S3, correcting the concentricity of the trunnion and the driven end disc by adjusting the distance between the aligning devices, and ensuring that the concentricity of the trunnion and the driven end disc is qualified; after the concentricity is confirmed, the driving end disc and the driven end disc are fixed through the connecting rod, the power disc and the driven disc are precisely machined, the positions of the mounting holes of the connecting rod are kept consistent, and the driving end disc and the driven end disc form a whole body which can rotate around the trunnion after the connecting rod is fastened.
And S4, adjusting the turning tool support to be parallel to the axis of the shaft neck to be processed so as to ensure the precision of the trunnion during processing, avoiding the occurrence of a big end and a small end, and installing a machined part on the turning tool support after ensuring the parallelism.
And S5, starting the driving device, enabling the driving end disc and the driven end disc to rotate to drive the machined part to machine the trunnion, and controlling the position of the turning tool support to machine the trunnions at different length positions.
In step S4, the processing specifically includes:
s51, roughly turning a machined part by using a turning tool, roughly turning an trunnion, and following the principle of multilayer fast forward, wherein the single-layer feed amount is within 0.5 mm, the rotating speed is 6-15 r/min, and the rotating speed is preferably 10 r/min;
s52, when the workpiece is processed to the standard size of + 0.3-0.5 mm, finely turning a layer of 0.1-0.3 mm at a rotating speed of 20-30 r/min; in this step, preferably, when the steel is processed to the standard size of +0.3 mm, a layer of steel is finely turned by 0.1 mm at a rotation speed of 25 rpm
S53, measuring the size of the machined part after finish turning, checking the concentricity and the straightness of the trunnion, ensuring that the concentricity and the diameter deviation of the machined part do not exceed the use requirements, and eliminating the concentricity and the diameter deviation by finely adjusting the angle of a turning tool or a turning tool rest if the phenomenon of large and small heads is found;
and S54, replacing the machined part with a grinding wheel for online grinding after the requirement of the finish turning size is met, wherein the single feed amount is 0.01-0.03 mm during grinding, and the rotating speed is 35-45 r/min until the trunnion is ground to the required size. The single feed is preferably 0.02 mm. Finally, the accuracy can be controlled within 0.05 mm of concentricity and within 0.03 mm of diameter deviation, and the production requirements are completely met.
By the method, the worn and scrapped backing ring can be repaired and reused, the problem that the trunnion of the converter backing ring cannot be machined after being worn is solved, the front and rear bearing positions and the transmission gear wheel matching position of the trunnion can be repaired, the repaired precision completely meets the use requirement, a large amount of maintenance cost can be saved for a steel plant, the waste of a large amount of resources is reduced, and the cyclic utilization of the resources is realized.
A converter supporting ring of a refining branch plant of the Beihaichengde nickel industry group entrusts my company to repair after a gear assembly part is worn, the company repairs the trunnion by the method, and the size of the repaired trunnion completely meets the production requirement.
Claims (9)
1. The utility model provides an on-spot prosthetic devices of converter trunnion ring trunnion which characterized in that includes:
one end of the fixed shaft is coaxially connected with the concentric sleeve, and the concentric sleeve can be matched with and fix the trunnion;
the driving end disc is arranged at the other end of the fixed shaft, is coaxial with the fixed shaft, and is driven to rotate by a driving device which is controlled by the controller;
the driven end disc is parallel to the driving end disc and coaxial with the fixed shaft, and a through hole is formed in the middle of the driven end disc and used for accommodating the trunnion to pass through;
the two connecting rods are arranged at least, two ends of each connecting rod are respectively connected with the driving end disc and the driven end disc, and the connecting rods are distributed in an annular array around the circle center of the driving end disc;
the center adjusting devices are at least two and are fixed on the same side surface of the driven end disc, distributed in an annular array around the circle center of the driven end disc, and the distance between the center adjusting devices is adjustable so that the trunnions and the concentric sleeves are coaxial;
processingequipment, its both ends are connected with initiative end disc and driven end disc respectively, including lathe tool support, lathe tool rest and machined part, the both ends of lathe tool support are connected with initiative end disc and driven end disc respectively, and parallel with the fixed axle center, are provided with the guide rail above the lathe tool support, the lathe tool rest can remove about on the guide rail, the machined part can be dismantled with the lathe tool rest and be connected.
2. The converter trunnion ring trunnion on-site repair device of claim 1, which is characterized in that:
the machining device further comprises a turning tool rest driving motor, a screw rod and a screw nut, wherein the turning tool rest driving motor is controlled by a controller and drives the screw rod to move, the screw rod is matched with the screw nut, and the screw nut drives the turning tool rest to move;
the relative position of the workpiece and the turning tool rest can be adjusted, so that the workpiece can be matched with trunnions with different sizes and shapes.
3. The converter trunnion ring trunnion on-site repair device of claim 1, which is characterized in that:
and the inner end of the aligning device is provided with a roller.
4. The converter trunnion ring trunnion on-site repair device according to claim 1 or 3, which is characterized in that:
the aligning device comprises a sleeve, a push rod and a roller, one side of the sleeve is connected with the driven end disc, the push rod axially penetrates through a sleeve hole of the sleeve and can move relative to the sleeve, and the inner end of the push rod is in rolling connection with the roller;
the sleeve is provided with a sleeve screw hole communicated with the sleeve hole from the outer side surface, and a fastening screw rod is arranged in the sleeve screw hole in a matched mode.
5. The converter trunnion ring trunnion on-site repair device of claim 1, which is characterized in that:
the number of the connecting rods is even, and one of the connecting rods which is arranged opposite to the processing device is matched with a balancing weight.
6. The converter trunnion ring trunnion on-site repair device of claim 1, which is characterized in that:
one side that the fixed axle was kept away from to concentric cover is provided with the trunnion socket, the trunnion socket can match and insert the trunnion and fix the trunnion.
7. The converter trunnion ring trunnion on-site repair device of claim 6, which is characterized in that:
the novel trunnion fixture is characterized by further comprising a fine adjustment screw, wherein a concentric sleeve screw hole is formed in the side face, connected with the fixed shaft, of the concentric sleeve in a penetrating mode, the concentric sleeve screw hole is communicated with the trunnion socket, and the fine adjustment screw can be screwed in or out of the concentric sleeve screw hole in a matching mode.
8. A converter trunnion ring trunnion on-site repairing method is characterized by comprising the following steps:
s1, surfacing the worn part of the trunnion of the backing ring of the converter;
s2, polishing the converter trunnion ring by using a converter trunnion ring on-site repairing device, penetrating the trunnion ring through a driven end disc, and fixing the end part of the trunnion ring in a concentric sleeve;
s3, correcting the concentricity of the trunnion and the driven end disc by adjusting the distance between the aligning devices, and ensuring that the concentricity of the trunnion and the driven end disc is qualified;
s4, adjusting the turning tool support to be parallel to the axis of the shaft neck to be processed, and installing a machined part on the turning tool support after ensuring the parallelism;
and S5, starting the driving device, enabling the driving end disc and the driven end disc to rotate to drive the machined part to machine the trunnion, and controlling the position of the turning tool support to machine the trunnions at different length positions.
9. The method for repairing a trunnion of a converter trunnion ring in situ according to claim 8,
in step S5, the processing specifically includes:
s51, roughly turning a machined part by using a turning tool, and roughly turning an trunnion according to a multi-layer fast-forward principle, wherein the single-layer feed amount is within 0.5 mm, and the rotating speed is 6-15 r/min;
s52, when the workpiece is processed to the standard size of + 0.3-0.5 mm, finely turning a layer of 0.1-0.2 mm at a rotating speed of 20-30 r/min;
s53, measuring the size of the machined part after finish turning, checking the concentricity and the straightness of the trunnion, ensuring that the concentricity and the diameter deviation of the machined part do not exceed the use requirements, and eliminating the concentricity and the diameter deviation by finely adjusting the angle of a turning tool or a turning tool rest if the phenomenon of large and small heads is found;
and S54, replacing the machined part with a grinding wheel for online grinding after the requirement of the finish turning size is met, wherein the single feed amount is 0.01-0.03 mm during grinding, and the rotating speed is 35-45 r/min until the trunnion is ground to the required size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911175268.8A CN110919288A (en) | 2019-11-26 | 2019-11-26 | Converter trunnion ring trunnion on-site repairing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889957A (en) * | 2020-07-16 | 2020-11-06 | 付锐 | Device for repairing shaft |
| CN113059215A (en) * | 2021-06-03 | 2021-07-02 | 佛山新成洪鼎机械技术有限公司 | Machining equipment for outer circle of large-diameter super-long workpiece |
| CN114346587A (en) * | 2021-12-30 | 2022-04-15 | 江苏国望高科纤维有限公司 | Cold-state repair method for shaft abrasion |
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| CN111889957A (en) * | 2020-07-16 | 2020-11-06 | 付锐 | Device for repairing shaft |
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| CN114346587A (en) * | 2021-12-30 | 2022-04-15 | 江苏国望高科纤维有限公司 | Cold-state repair method for shaft abrasion |
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