CN216655861U - Rounding machine for silicon steel annular furnace - Google Patents

Abstract

The utility model relates to a rounding machine of a silicon steel annular furnace, which comprises a supporting structure, a centering device and a centering device, wherein the supporting structure is used for vertically supporting an inner cover; the straightening and sizing structure is used for pressurizing, straightening and repairing the inner cover and comprises a first straightening roller, a second straightening roller and a sizing roller, wherein the first straightening roller can be horizontally movably arranged on the supporting structure, and the second straightening roller and the sizing roller are fixedly arranged on the supporting structure; the first rounding roller and the second rounding roller are used for pressurizing and correcting the inner cover along the radial direction; the first rounding roller is connected with a distance measuring unit, and the distance measuring unit is used for recording the deformation of the inner cover and the working stroke of the first rounding roller; the induction heating structure is used for heating the inner cover and warming up, and comprises an induction heater and a temperature measuring instrument, wherein the induction heater is used for heating the inner cover, and the temperature measuring instrument is used for detecting the temperature of the inner cover. According to the utility model, the deformation correction of the inner cover is carried out according to the principles of cold forming and thermoplastic forming of metal materials, the residual stress generated in the repair process is eliminated, the automation of the rounding process is realized, and the repair efficiency is effectively improved.

Description

Rounding machine for silicon steel annular furnace

Technical Field

The utility model relates to the technical field of steel rolling smelting, in particular to a rounding machine of a silicon steel annular furnace.

Background

The silicon steel annular furnace is mainly used for annealing the silicon steel coil; the inner cover of the silicon steel annular furnace (used for protecting the steel coil of the silicon steel annular annealing furnace, working in an ultra-high temperature medium environment and consisting of an end socket, an upper barrel and a lower barrel) is of a cylindrical structure with an opening at one end, the material of the inner cover is special, the production process is strict, and the manufacturing is complex and the price is high; due to the requirement of the production process, the silicon steel annular furnace has very strict use requirements on the inner cover, not only has high requirement on the strength of the inner cover, but also has very strict requirement on the precision of the size of the inner cover; in production, the inner cover is under the high temperature environment in the silicon steel annular furnace for a long time, and the highest temperature is 1200 ℃, and the position temperature variation of inner cover in the stove is different, still can receive the washing away of flame in the motion process, receives reasons such as striking when in addition the handling, can cause the local deformation of inner cover lower part section of thick bamboo wall, leads to unable continuation normal use. If the inner covers are frequently replaced in production, the production cost is inevitably increased, and great waste is caused.

In the prior art, the inner cover that produces the deformation is restoreed and is mainly adopted pneumatic cylinder drive extrusion die to correct the inner cover deformation position, and this kind of restoration mode can reduce intensity of labour to a certain extent, improves work efficiency, can guarantee certain precision, but needs operating personnel to confirm to correct the position, must whole journey participate in, and the problem of deformation acceleration or fracture when the residual stress that produces when restoreing leads to the inner cover to reuse.

In the prior art, an inner cover rounding machine is also provided, which comprises a base, wherein an annular large gear tray for placing an inner cover is arranged on the base; an inner circular arc extrusion die is arranged on the base outside the tray and opposite to the extrusion head. This technique suffers from two disadvantages: firstly, from hoist and mount beginning to the end is corrected to the inner cover, need the whole participation of operating personnel, for example: the deformation position of the inner cover, the correction degree of the inner cover, the rotation position of the inner cover and the like, and the automation of the correction process cannot be realized; and secondly, the inner cover is corrected to be in a cold state extrusion process, the inner cover has larger residual stress in the inner part in the correction process, and when the corrected inner cover enters the annular furnace again to work in a high-temperature environment, the inner cover is easy to deform again in a short time.

Therefore, the inventor provides the rounding machine of the silicon steel annular furnace by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a silicon steel annular furnace rounding machine, which overcomes the problems in the prior art, and carries out deformation correction on an inner cover according to the principles of metal material cold forming and thermoplastic forming, eliminates residual stress generated in the process of repairing, realizes automation of the rounding process, and effectively improves the repairing efficiency.

The utility model aims to realize the purpose, and the rounding machine of the silicon steel annular furnace comprises,

a support structure for vertically supporting the inner cover, the support structure including a carrier roller portion;

the inner cover comprises a first rounding roller, a second rounding roller and a sizing roller, wherein the central shafts of the first rounding roller, the second rounding roller and the sizing roller are vertically arranged; the first rounding roller and the second rounding roller are used for pressurizing and correcting the inner cover along the radial direction, the first rounding roller can actively rotate around the central shaft of the first rounding roller to drive the inner cover to rotate, and the second rounding roller can rotate along with the inner cover in a driven mode; the first rounding roller can be connected with a distance measuring unit, and the distance measuring unit is used for recording the deformation of the inner cover and the working stroke of the first rounding roller;

the induction heating structure is used for heating the inner cover and heating the inner cover, and comprises an induction heater and a temperature measuring instrument, wherein the induction heater is used for heating the inner cover, and the temperature measuring instrument is used for detecting the temperature of the inner cover;

the orthopedic and sizing structure, the distance measuring unit, the induction heater and the temperature measuring instrument are all electrically connected with the control part.

In a preferred embodiment of the present invention, the first rounding roller is connected to a first driving portion capable of driving the first rounding roller to rotate around its central axis, the first rounding roller is further connected to a second driving portion capable of driving the first rounding roller to move horizontally, the second driving portion is connected to the distance measuring unit, and the distance measuring unit is capable of recording the deformation amount of the inner cover and the working stroke of the second driving portion; the first driving portion and the second driving portion are electrically connected with the control portion.

In a preferred embodiment of the present invention, the supporting structure includes a base, and the roller portion is connected to the base; the carrier roller part comprises at least three carrier roller supports, carrier rollers are horizontally hinged to the carrier roller supports, the centers of the carrier rollers are located on a virtual circle, the central shafts of the carrier rollers are intersected at an intersection point, the intersection point forms the center of the circular straightening machine, the central shaft of the first circular straightening roller and the central shaft of the second circular straightening roller are located in the same vertical plane, and the vertical plane forms the central plane of the circular straightening machine.

In a preferred embodiment of the present invention, the number of the sizing rollers is two, the two sizing rollers are symmetrically arranged about the center plane of the roundness correction machine, a third driving portion capable of driving the sizing rollers to rotate around the center axes of the sizing rollers is connected to the sizing rollers, and the third driving portion is electrically connected to the control portion.

In a preferred embodiment of the present invention, the third driving unit includes a second hydraulic motor, a third gear is provided on an output shaft of the second hydraulic motor, a fourth gear engaged with the third gear is coaxially provided on the sizing roller, and the second hydraulic motor drives the sizing roller to rotate around a central axis thereof through the third gear and the fourth gear.

In a preferred embodiment of the present invention, the first driving unit includes a first hydraulic motor, a first gear is provided on an output shaft of the first hydraulic motor, a second gear meshed with the first gear is coaxially provided on the first rounding roller, and the first hydraulic motor drives the first rounding roller to rotate around a central axis thereof through the first gear and the second gear.

In a preferred embodiment of the present invention, a movable bracket is disposed on the base, the movable bracket supports the first rounding roller, the movable bracket is connected to the second driving portion, and the second driving portion can drive the movable bracket to drive the first rounding roller to move horizontally.

In a preferred embodiment of the present invention, the second driving portion includes a tightening hydraulic cylinder horizontally disposed, one end of the tightening hydraulic cylinder is fixedly connected to the base, and the other end of the tightening hydraulic cylinder is fixedly connected to the movable bracket, and the tightening hydraulic cylinder is configured to drive the movable bracket to move horizontally.

In a preferred embodiment of the present invention, the distance measuring unit includes a pull encoder disposed on the base, the pull encoder is connected to one end of a pull, and the other end of the pull is connected to the movable bracket.

In a preferred embodiment of the present invention, the base is provided with two guide grooves, the two guide grooves are symmetrically arranged with respect to a central plane of the roundness correcting machine, and the movable support horizontally moves along the guide grooves.

In a preferred embodiment of the present invention, the base is connected to a buffer guide roller with a vertically arranged central shaft, and the buffer guide roller is used for guiding and limiting the inner cover in the process of correcting.

In a preferred embodiment of the present invention, a first guide roller bracket is disposed on the base, a second guide roller bracket is disposed on the first guide roller bracket, a third guide roller bracket capable of moving horizontally is connected to the second guide roller bracket, a horizontal buffer spring is disposed between the third guide roller bracket and the second guide roller bracket, and the buffer guide roller is disposed on the third guide roller bracket.

In a preferred embodiment of the present invention, the number of the buffer guide rollers is two, and an included angle between a vertical plane where central axes of the two buffer guide rollers are located and a central plane of the rounding machine is 90 °.

In a preferred embodiment of the present invention, a lifting bracket is connected to the base, and the induction heater is disposed on the lifting bracket; and a fourth driving part is connected to the lifting support, and the fourth driving part drives the lifting support to drive the induction heater to lift.

In a preferred embodiment of the present invention, the fourth driving part includes a vertically disposed hydraulic cylinder, one end of the hydraulic cylinder is fixedly connected to the base, and the other end of the hydraulic cylinder is connected to the lifting bracket; and the lifting hydraulic cylinder is provided with a stroke detection control switch, and the stroke detection control switch is used for controlling the telescopic stroke of the lifting hydraulic cylinder.

In a preferred embodiment of the present invention, the base is connected to a crane support, and the crane support is provided with the lifting hydraulic cylinder; the lifting frame support is provided with a lifting guide wheel, and the lifting guide wheel is used for guiding and limiting the lifting support.

In a preferred embodiment of the present invention, the induction heater is disposed at both sides of the side wall of the inner cover.

In a preferred embodiment of the present invention, the induction heater is connected to a power supply cable and a water-cooling hose, and the power supply cable and the water-cooling hose move along with the induction heater through a drag chain.

In a preferred embodiment of the present invention, the induction heater and the thermometer are controlled by the control unit in association with each other.

In a preferred embodiment of the present invention, the induction heating structure is disposed between the sizing roller and the buffer guide roller.

From the above, the silicon steel ring furnace rounding machine provided by the utility model has the following beneficial effects:

according to the utility model, the deformation correction of the inner cover is carried out in the silicon steel annular furnace rounding machine according to the principles of metal material cold forming and thermoplastic forming; the inner cover straightening function is realized by a straightening and sizing structure of a roller system consisting of a first straightening roller, a second straightening roller and a sizing roller which are vertically arranged, the first straightening roller, the second straightening roller and the sizing roller act on the inner cover together, and the wall of the inner cover is subjected to metal plastic deformation by the action of external force; the inner cover is heated by adopting an induction heating structure, so that the temperature of the inner cover can be improved, the residual stress of the inner cover after plastic deformation is eliminated, no residual internal stress is generated after the correction is finished, the service life of the inner cover is prolonged, and the use cost of the inner cover is reduced; the control part controls all parts in a related mode, the distance measuring unit records the deformation of the inner cover and the working stroke of the second rounding roller in real time, the temperature measuring instrument detects the temperature of the inner cover in real time, the correction process automation is realized, operators do not need to participate in the whole process, the labor intensity of the operators is reduced, and the repair efficiency is improved; the rounding machine of the silicon steel annular furnace has compact structure and simple and convenient operation, and can realize continuous correction and gradual correction of the inner cover.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1: is a top view of the rounding machine of the silicon steel annular furnace.

FIG. 2: is a front view of the rounding machine of the silicon steel annular furnace.

FIG. 3: is a schematic view of the first rounding roller and the first driving part of the present invention.

FIG. 4: is a schematic diagram of the first rounding roller and the guide groove of the utility model.

FIG. 5: the second rounding roller, the sizing roller and the third driving part of the present invention are illustrated schematically.

FIG. 6: is a schematic structural diagram of the buffering guide roller.

FIG. 7 is a schematic view of: is a schematic structural diagram of the lifting support and the induction heating structure.

FIG. 8: is a schematic structural diagram of the lifting guide wheel.

In the figure:

100. a rounding machine of a silicon steel annular furnace;

1. a support structure;

11. a base; 12. a carrier roller bracket; 13. a carrier roller; 14. moving the support; 15. a guide groove; 16. a buffer guide roller; 161. a first guide roller bracket; 162. a second guide roller bracket; 163. a third guide roller bracket; 164. a buffer spring; 17. a lifting support; 18. the lifting frame supports; 19. a lifting guide wheel;

2. a shape-righting and sizing structure;

21. a first rounding roller; 22. a second rounding roller; 23. a sizing roller;

3. an induction heating structure;

31. an induction heater; 32. a power supply cable; 33. a water-cooled hose; 34. a drag chain; 35. a temperature measuring instrument;

41. a first driving section; 411. a first hydraulic motor; 412. a first gear; 413. a second gear;

42. a second driving section; 421. tightly pushing the hydraulic cylinder;

43. a third driving section; 431. a second hydraulic motor; 432. a third gear; 433. a fourth gear;

44. a fourth driving section; 441. A lifting hydraulic cylinder; 442. A stroke detection control switch;

51. a stay wire encoder; 52. A pull wire;

6. an inner cover.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the utility model in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 8, the present invention provides a silicon steel annular furnace rounding machine 100, comprising a support structure 1 for vertically supporting an inner cover 6, the support structure 1 comprising a carrier roller portion;

the correcting and sizing structure 2 is used for pressurizing, correcting and repairing the inner cover 6 and comprises a first correcting round roller 21, a second correcting round roller 22 and a sizing roller 23, wherein the central shafts of the first correcting round roller 21, the second correcting round roller 22 and the sizing roller 23 are vertically arranged, the first correcting round roller 21 can be horizontally and movably arranged on the supporting structure 1, and the second correcting round roller 22 and the sizing roller 23 are fixedly arranged on the supporting structure 1; when in use, the first rounding roller 21 can be movably arranged at the radial inner side of the inner cover, and the second rounding roller 22 and the sizing roller 23 can be arranged at the radial outer side of the inner cover; the first rounding roller 21 and the second rounding roller 22 are used for pressurizing and correcting the inner cover along the radial direction, the first rounding roller 21 can actively rotate around the central shaft of the first rounding roller to drive the inner cover to rotate, and the second rounding roller 22 can rotate along with the inner cover in a driven mode; the first rounding roller 21 can be connected with a distance measuring unit, and the distance measuring unit is used for recording the deformation of the inner cover and the working stroke of the first rounding roller; the second rounding roller 22 is arranged at the outer side of the inner cover and corresponds to the first rounding roller 21 at the inner side of the inner cover, and the position of the second rounding roller 22 is fixed and is a driven roller system; the first rounding roller 21 is movable and is an actively driven roller system. The corrected inner cover size is determined by the positions of the first rounding roller 21, the second rounding roller 22 and the sizing roller 23 and the roller diameter size.

The induction heating structure 3 is used for heating the inner cover 6 and heating the inner cover, and comprises an induction heater 31 and a temperature measuring instrument 35, wherein the induction heater is used for heating the inner cover, and the temperature measuring instrument is used for detecting the temperature of the inner cover 6;

the control part, the shape correcting and sizing structure, the distance measuring unit, the induction heater and the temperature measuring instrument are all electrically connected with the control part.

According to the principle of cold forming and thermoplastic forming of metal materials, the rounding machine of the silicon steel annular furnace corrects the deformation of the inner cover; the inner cover straightening function is realized by a straightening and sizing structure of a roller system consisting of a first straightening roller, a second straightening roller and a sizing roller which are vertically arranged, the first straightening roller, the second straightening roller and the sizing roller act on the inner cover together, and the wall of the inner cover is subjected to metal plastic deformation by the action of external force; the inner cover is heated by adopting an induction heating structure, so that the temperature of the inner cover can be improved, the residual stress of the inner cover after plastic deformation is eliminated, no residual internal stress is generated after the correction is finished, the service life of the inner cover is prolonged, and the use cost of the inner cover is reduced; the control part controls all parts in a related mode, the distance measuring unit records the deformation of the inner cover and the working stroke of the second rounding roller in real time, the temperature measuring instrument detects the temperature of the inner cover in real time, the correction process automation is realized, operators do not need to participate in the whole process, the labor intensity of the operators is reduced, and the repair efficiency is improved; the rounding machine for the silicon steel annular furnace has a compact structure, is simple and convenient to operate, and can realize continuous correction and gradual correction of the inner cover.

Further, as shown in fig. 1, 2, 3 and 4, the first rounding roller 21 is connected with a first driving part 41 which can drive the first rounding roller to rotate around the central axis (central axis of the first rounding roller), the first rounding roller 21 is also connected with a second driving part 42 which can drive the first rounding roller to move horizontally, the second driving part 42 is connected with a distance measuring unit which can record the deformation amount of the inner cover and the working stroke of the second driving part; the first drive portion 41 and the second drive portion 42 are electrically connected to the control portion.

Further, as shown in fig. 1, the supporting structure 1 includes a base 11, and a roller portion is connected to the base 11; the carrier roller part comprises at least three carrier roller supports 12, carrier rollers 13 are horizontally hinged to the carrier roller supports 12, the centers of the carrier rollers 13 are located on a virtual circle, the central shafts of the carrier rollers 13 intersect at an intersection point A, the intersection point A forms the center of the circle straightening machine, the central shaft of the first circle straightening roller and the central shaft of the second circle straightening roller are located in the same vertical plane, and the vertical plane forms the central plane B of the circle straightening machine. In a specific embodiment of the present invention, the idler portion includes five idler brackets 12 and idlers 13 thereon, the idlers 13 are adjusted to make their roller surface elevations consistent, and the central axes of the idlers 13 intersect at an intersection point a; the base 11 and the carrier roller support 12 are connected through a bolt pair, and are welded and fixed after field adjustment is finished, and the supporting structure can be designed into an integral structure by adopting the base 11 and the carrier roller support 12. The central axes of the first rounding roller 21 and the second rounding roller 22 are both vertical to the plane of the top surface of the carrier roller.

Further, as shown in fig. 1 and 5, the number of the diameter defining rolls 23 is two, two diameter defining rolls 23 are provided symmetrically with respect to the center plane of the roundness correcting machine, a third driving portion 43 capable of driving the diameter defining rolls to rotate about the center axis thereof (diameter defining roll center axis) is connected to the diameter defining rolls 23, and the third driving portion 43 is electrically connected to the control portion. The sizing roller is vertical setting, and the center pin perpendicular to bearing roller 13's top surface plane of sizing roller.

As shown in fig. 5, the third driving unit 43 includes a second hydraulic motor 431, a third gear 432 is provided on an output shaft of the second hydraulic motor 431, a fourth gear 433 that meshes with the third gear 432 is coaxially provided on the sizing roller 23, and the second hydraulic motor 431 drives the sizing roller 23 to rotate around its center axis through the third gear 432 and the fourth gear 433 (open gear engagement system). A third gear 432 is provided on an output shaft of the second hydraulic motor 431, the third gear 432 is simultaneously engaged with the two fourth gears 433, and the second hydraulic motor 431 simultaneously drives the two diameter defining rollers 23 to rotate.

As shown in fig. 3 and 4, the first driving unit 41 includes a first hydraulic motor 411, a first gear 412 is provided on an output shaft of the first hydraulic motor 411, a second gear 413 engaged with the first gear 412 is coaxially provided on the first rounding roller 21, and the first hydraulic motor 411 drives the first rounding roller 21 to rotate around its central axis through the first gear 412 and the second gear 413. The first gear 412 is provided with a smaller diameter dimension than the second gear 413.

The first hydraulic motor 411 and the second hydraulic motor 431 are powered by a hydraulic system, and the movement of the first hydraulic motor and the second hydraulic motor is controlled by the same set of hydraulic valve bank, so that the speed of the roll surfaces of the sizing roll 23 and the first rounding roll 21 is kept consistent, and the inner cover and the first rounding roll 21 are prevented from sliding relatively. First hydraulic motor 411 and second hydraulic motor 431 respectively drive first rounding roller 21 and sizing roller 23 to rotate about their central axes, and first rounding roller 21 and sizing roller 23 rotate to jointly drive the inner shroud to rotate about its central axis.

The first hydraulic motor 411 and the second hydraulic motor 431 may be replaced by electric motors, and the gear-meshed transmission mechanism may be replaced by a belt transmission, a chain transmission, or other transmission structures.

Further, as shown in fig. 1 and 2, a movable support 14 is provided on the base 11, the movable support 14 supports the first rounding roller 21, the movable support 14 is connected to a second driving portion 42, and the second driving portion 42 can drive the movable support 14 to drive the first rounding roller 21 to move horizontally.

Further, as shown in fig. 1 and fig. 2, the second driving portion 42 includes a tightening hydraulic cylinder 421 horizontally disposed, one end of the tightening hydraulic cylinder 421 is fixedly connected to the base 11, and the other end is fixedly connected to the movable bracket 14, and the tightening hydraulic cylinder 421 is used for driving the movable bracket to move horizontally. In this embodiment, the tightening hydraulic cylinder includes a tightening cylinder barrel and a tightening cylinder rod, the tightening cylinder barrel is fixedly connected to the base 11, the tightening cylinder rod is fixedly connected to the movable bracket 14, and the tightening cylinder rod drives the movable bracket 14 to move horizontally. The inner cover is acted on by the first rounding roller 21 and the second rounding roller 22 with a correcting force provided by the jacking cylinder 421.

In the present embodiment, the tightening cylinder rod is flange-connected to the movable bracket 14, and may be connected by a screw or a hinge joint.

Further, as shown in fig. 1 and 2, the distance measuring unit includes a pull line encoder 51 disposed on the base, one end of a pull line 52 is connected to the pull line encoder 51, and the other end of the pull line 52 is connected to the movable bracket 14. The wire encoder 51 can automatically record the deformation of the inner cover through the stroke change of the jacking hydraulic cylinder 421, and detect the working stroke of the jacking hydraulic cylinder 421. The stroke change of the movable support 14 supporting the first rounding roller 21 is the stroke change of the jacking hydraulic cylinder 421, and is detected by the wire encoder 51 in real time. And (4) adopting a stay wire type absolute value encoder to carry out stroke detection of the jacking hydraulic cylinder and tracking of the deformation of the inner cover, thereby judging whether the correction of the inner cover meets the set requirement.

Further, as shown in fig. 4, two guide grooves 15 are provided on the base 11, the two guide grooves 15 are symmetrically provided with respect to the center plane of the roundness correcting machine, and the movable bracket 14 is horizontally moved (linearly reciprocated) along the guide grooves 15.

Further, as shown in fig. 1 and 6, in order to enable the circular straightener 100 of the silicon steel circular furnace to position and buffer the inner cover during operation, a buffer guide roller 16 with a vertically arranged central shaft is connected to the base 11, and the buffer guide roller 16 is used for guiding and limiting the inner cover in the straightening process. The central axis of the buffer guide roller 16 is vertical to the plane of the top surface of the carrier roller 13.

When the inner covers are placed on the carrier rollers 13 of the rounding machine 100 of the silicon steel annular furnace, the buffer guide rollers 16 can limit the inner covers in a set area; the buffer guide roll 16 prevents the inner cover from swinging during driving of the inner cover to the working position by the puller cylinder 421, and limits the inner cover to the working area.

Further, as shown in fig. 1 and 6, a first guide roller holder 161 is provided on the base 11, a second guide roller holder 162 is provided on the first guide roller holder 161, a third guide roller holder 163 capable of moving horizontally is connected to the second guide roller holder 162, a horizontal buffer spring 164 is provided between the third guide roller holder 163 and the second guide roller holder 162, and a buffer guide roller 16 is provided on the third guide roller holder 163, so that the buffer guide roller 16 can rotate around its own central axis. In the present embodiment, the first guide roller bracket 161 is connected to the idler bracket 12.

Furthermore, the number of the buffer guide rollers is two, and the included angle between the vertical plane where the central shafts of the two buffer guide rollers are located and the central plane of the roundness correcting machine is 90 degrees. The number of the buffer guide rollers can be more than two, and is determined according to actual use requirements.

Further, as shown in fig. 1 and 6, a lifting bracket 17 is connected to the base 11, and the induction heater is disposed on the lifting bracket 17; the fourth driving part 44 is connected to the lifting bracket 17, and the fourth driving part 44 drives the lifting bracket 17 to drive the induction heater 31 to lift.

Further, as shown in fig. 6, the fourth driving part 44 includes a vertically disposed hydraulic cylinder 441, one end of the hydraulic cylinder 441 is fixedly connected to the base 11, and the other end of the hydraulic cylinder 441 is connected to the lifting bracket 17; the lifting hydraulic cylinder 441 is provided with a stroke detection control switch 442 which is used for controlling the telescopic stroke of the lifting hydraulic cylinder so that the lifting bracket 17 with the induction heater 31 is set at a set position according to a program to meet the heating requirement and the use safety requirement of the inner cover; in an embodiment of the present invention, there are two stroke detection control switches to control the home position and the operating position of the induction heater 31, respectively.

The induction heater 31 is arranged on the lifting bracket, and before the inner cover is placed on the carrier roller, the induction heater 31 is in a low position; after the inner cover is placed on the carrier roller and the first rounding roller 21 driven by the jacking hydraulic cylinder 421 is pushed to a set position and rotates for a circle, the induction heater 31 is raised to a high position.

Further, as shown in fig. 6, 7 and 8, a lifting frame support 18 is connected to the base 11, and a lifting hydraulic cylinder 441 is arranged on the lifting frame support 18; the lifting frame support 18 is provided with a lifting guide wheel 19, and the lifting guide wheel 19 is used for guiding the limiting lifting support 17. In the present embodiment, a plurality of sets of elevation guide wheels 19 are provided between the elevation frame 17 and the elevation frame support 18 to realize the elevation frame 17 with the limitation of elevation (up-down linear motion) and the guidance of elevation motion, and in the present embodiment, eight sets of elevation guide wheels 19 are provided. The stroke detection control switch comprises a proximity switch arranged on the lifting frame support 18 and an induction element fixed on the lifting support 17.

In the present embodiment, the induction heater 31 is disposed on both sides of the side wall of the inner cover.

When the inner cover is in place, the induction heater 31 is lifted to a high position, and a heating program is set and started according to the program; when the leveling is completed, the induction heater 31 is de-energized and lowered to the original position.

Further, as shown in fig. 7, a power supply cable 32 and a water cooling hose 33 are connected to the induction heater 31, and the power supply cable 32 and the water cooling hose 33 are moved along with the induction heater 31 by a drag chain 34, so as to prevent the power supply cable 32 and the water cooling hose 33 from being damaged by the reciprocating motion.

In the present embodiment, the temperature detector is an infrared temperature detector, and the induction heater and the temperature detector are controlled by the control unit in association with each other. The infrared thermometer detects the temperature of the lower cylinder wall of the inner cover in real time and controls the temperature of the inner cover in linkage with a control Part (PLC), so that the inner cover is in a reasonable temperature range in the correction process, and after the correction is finished, no residual stress exists in the inner cover.

Further, as shown in fig. 1, an induction heating structure 3 is provided before the second rounding roll 22 and between the sizing roll 23 and the buffer guide roll 16 in the process running direction.

The use process of the silicon steel annular furnace rounding machine 100 of the utility model is as follows:

placing the damaged or deformed inner cover 6 ready for repair on a carrier roller 13 of a rounding machine 100 of the silicon steel annular furnace, starting a jacking hydraulic cylinder 421, pushing a first rounding roller 21 by the jacking hydraulic cylinder 421 through a movable bracket 14, and pushing the first rounding roller 21 to a set position by abutting against the inner wall of the inner cover 6;

starting a first hydraulic motor 411 and a second hydraulic motor 431, wherein the first hydraulic motor 411 and the second hydraulic motor 431 respectively drive a first rounding roller 21 and a sizing roller 23 to rotate around respective central shafts, the first rounding roller 21 and the sizing roller 23 rotate to jointly drive an inner cover 6 to rotate around the central shaft of the inner cover 6, and the inner cover 6 stops rotating after rotating for one circle;

starting the lifting hydraulic cylinder 441, driving the lifting support 17 to ascend by the lifting hydraulic cylinder 441, driving the induction heater 31 to ascend to a set position by the lifting support 17, and starting heating by the induction heater 31; while the inner shroud begins to rotate continuously (in the manner previously described); the first rounding roller, the second rounding roller and the sizing roller act on the inner cover 6 together, the cylinder wall of the inner cover is subjected to metal plastic deformation under the action of external force, and the inner cover is continuously corrected by the reshaping and sizing structure 2 along with the rotation of the inner cover;

when the deformation of the automatically recorded inner cover is continuously within the set range for 3min, the induction heater 31 is powered off, the first rounding roller 21 and the sizing roller 23 stop rotating, the induction heater 31 descends to a low position, the jacking hydraulic cylinder 421 retracts to the original position, and the correction of the inner cover is completed; the control part prompts the operator that the correction of the inner cover is finished, and the next correction program of the inner cover can be started.

From the above, the silicon steel ring furnace rounding machine provided by the utility model has the following beneficial effects:

according to the utility model, the deformation correction of the inner cover is carried out in the silicon steel annular furnace rounding machine according to the principles of metal material cold forming and thermoplastic forming; the inner cover straightening function is realized by a straightening and sizing structure of a roller system consisting of a first straightening roller, a second straightening roller and a sizing roller which are vertically arranged, the first straightening roller, the second straightening roller and the sizing roller act on the inner cover together, and the wall of the inner cover is subjected to metal plastic deformation by the action of external force; the inner cover is heated by adopting an induction heating structure, so that the temperature of the inner cover can be improved, the residual stress of the inner cover after plastic deformation is eliminated, no residual internal stress is generated after the correction is finished, the service life of the inner cover is prolonged, and the use cost of the inner cover is reduced; the control part controls all parts in a related mode, the distance measuring unit records the deformation of the inner cover and the working stroke of the second rounding roller in real time, the temperature measuring instrument detects the temperature of the inner cover in real time, the correction process automation is realized, operators do not need to participate in the whole process, the labor intensity of the operators is reduced, and the repair efficiency is improved; the rounding machine for the silicon steel annular furnace has a compact structure, is simple and convenient to operate, and can realize continuous correction and gradual correction of the inner cover.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model should fall within the protection scope of the utility model.

Claims (20)

1. A silicon steel annular furnace rounding machine is characterized by comprising,

a support structure for vertically supporting the inner cover, the support structure including a carrier roller portion;

the inner cover comprises a first rounding roller, a second rounding roller and a sizing roller, wherein the central shafts of the first rounding roller, the second rounding roller and the sizing roller are vertically arranged; the first rounding roller and the second rounding roller are used for pressurizing and correcting the inner cover along the radial direction, the first rounding roller can actively rotate around the central shaft of the first rounding roller to drive the inner cover to rotate, and the second rounding roller can rotate along with the inner cover in a driven mode; the first rounding roller can be connected with a distance measuring unit, and the distance measuring unit is used for recording the deformation of the inner cover and the working stroke of the first rounding roller;

the induction heating structure is used for heating the inner cover and heating the inner cover, and comprises an induction heater and a temperature measuring instrument, wherein the induction heater is used for heating the inner cover, and the temperature measuring instrument is used for detecting the temperature of the inner cover;

the orthopedic and sizing structure, the distance measuring unit, the induction heater and the temperature measuring instrument are all electrically connected with the control part.

2. The silicon steel annular furnace rounding machine of claim 1, wherein the first rounding roller is connected with a first driving part capable of driving the first rounding roller to rotate around a central shaft of the first rounding roller, the first rounding roller is further connected with a second driving part capable of driving the first rounding roller to horizontally move, the second driving part is connected with the distance measuring unit, and the distance measuring unit can record the deformation amount of the inner cover and the working stroke of the second driving part; the first driving portion and the second driving portion are electrically connected with the control portion.

3. The silicon steel ring furnace rounding machine of claim 2, wherein the supporting structure comprises a base, and the roller portion is connected to the base; the carrier roller part comprises at least three carrier roller supports, carrier rollers are horizontally hinged to the carrier roller supports, the centers of the carrier rollers are located on a virtual circle, the central shafts of the carrier rollers are intersected at an intersection point, the intersection point forms the center of the circular straightening machine, the central shaft of the first circular straightening roller and the central shaft of the second circular straightening roller are located in the same vertical plane, and the vertical plane forms the central plane of the circular straightening machine.

4. The silicon steel ring furnace roundness correction machine of claim 3, wherein the number of the sizing rollers is two, the two sizing rollers are symmetrically arranged about the center plane of the roundness correction machine, a third driving part capable of driving the sizing rollers to rotate around the center axes of the sizing rollers is connected to the sizing rollers, and the third driving part is electrically connected with the control part.

5. The silicon steel ring furnace rounder according to claim 4, wherein the third driving unit includes a second hydraulic motor, a third gear is provided on an output shaft of the second hydraulic motor, a fourth gear meshed with the third gear is coaxially provided on the sizing roller, and the second hydraulic motor drives the sizing roller to rotate around a central axis thereof through the third gear and the fourth gear.

6. The silicon steel ring furnace rounding machine of claim 3, wherein the first driving part comprises a first hydraulic motor, a first gear is arranged on an output shaft of the first hydraulic motor, a second gear meshed with the first gear is coaxially arranged on the first rounding roller, and the first hydraulic motor drives the first rounding roller to rotate around a central shaft of the first rounding roller through the first gear and the second gear.

7. The silicon steel annular furnace rounding machine of claim 3, wherein a movable support is arranged on the base, the first rounding roller is supported on the movable support, the movable support is connected with the second driving portion, and the second driving portion can drive the movable support to drive the first rounding roller to move horizontally.

8. The silicon steel ring furnace rounding machine of claim 7, wherein the second driving portion comprises a horizontally arranged jacking hydraulic cylinder, one end of the jacking hydraulic cylinder is fixedly connected with the base, the other end of the jacking hydraulic cylinder is fixedly connected with the movable support, and the jacking hydraulic cylinder is used for driving the movable support to move horizontally.

9. The silicon steel ring furnace rounding machine of claim 8, wherein the distance measuring unit comprises a stay wire encoder disposed on the base, one end of a stay wire is connected to the stay wire encoder, and the other end of the stay wire is connected to the movable bracket.

10. The silicon steel ring furnace rounding machine of claim 8, wherein two guide slots are provided on the base, the two guide slots are symmetrically provided about a central plane of the rounding machine, and the moving bracket moves horizontally along the guide slots.

11. The silicon steel ring furnace rounding machine of claim 3, wherein a buffering guide roller with a vertically arranged central shaft is connected to the base, and the buffering guide roller is used for guiding and limiting the inner cover in the process of correcting.

12. The silicon steel ring furnace rounding machine of claim 11, wherein a first guide roller bracket is provided on the base, a second guide roller bracket is provided on the first guide roller bracket, a horizontally movable third guide roller bracket is connected to the second guide roller bracket, a horizontal buffer spring is provided between the third guide roller bracket and the second guide roller bracket, and the buffer guide roller is provided on the third guide roller bracket.

13. The silicon steel ring furnace rounding machine of claim 11, wherein the number of the buffer guide rolls is two, and an included angle between a vertical plane where central axes of the two buffer guide rolls are located and a central plane of the rounding machine is 90 °.

14. The silicon steel ring furnace rounding machine of claim 11, wherein a lifting bracket is connected to the base, and the induction heater is disposed on the lifting bracket; and a fourth driving part is connected to the lifting support, and the fourth driving part drives the lifting support to drive the induction heater to lift.

15. The silicon steel ring furnace rounding machine of claim 14, wherein the fourth driving portion comprises a vertically arranged hydraulic lift cylinder, one end of the hydraulic lift cylinder is fixedly connected to the base, and the other end of the hydraulic lift cylinder is connected to the lifting support; and the lifting hydraulic cylinder is provided with a stroke detection control switch, and the stroke detection control switch is used for controlling the telescopic stroke of the lifting hydraulic cylinder.

16. The silicon steel ring furnace rounding machine of claim 15, wherein a lifting frame support is connected to the base, and the lifting frame support is provided with the lifting hydraulic cylinder; the lifting frame support is provided with a lifting guide wheel, and the lifting guide wheel is used for guiding and limiting the lifting frame.

17. The silicon steel ring furnace rounder of claim 15, wherein the induction heaters are provided at both sides of the side wall of the inner cover.

18. The silicon steel ring furnace rounder of claim 15, wherein the induction heater is connected to a power supply cable and a water-cooling hose, and the power supply cable and the water-cooling hose move with the induction heater through a drag chain.

19. The silicon steel ring furnace rounder according to claim 15, wherein the induction heater and the temperature measuring instrument are controlled in association with each other by the control portion.

20. The silicon steel ring furnace rounder of claim 15, wherein the induction heating structure is disposed between the sizing roller and the buffer guide roller.

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