CN108504817B - Converter hanging structure and disassembling and assembling method thereof - Google Patents
Converter hanging structure and disassembling and assembling method thereof Download PDFInfo
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- CN108504817B CN108504817B CN201810385624.8A CN201810385624A CN108504817B CN 108504817 B CN108504817 B CN 108504817B CN 201810385624 A CN201810385624 A CN 201810385624A CN 108504817 B CN108504817 B CN 108504817B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
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Abstract
The invention discloses a converter hanging structure and a dismounting and mounting method thereof, wherein the converter hanging structure comprises a converter shell lifting lug, wherein an auxiliary device is fixedly arranged on one side of the converter shell lifting lug, which corresponds to the side where a pin shaft penetrates, and comprises a guide straight pipe, a dummy shaft and a jacking mechanism, wherein the guide straight pipe can be matched with the outer diameter of the pin shaft, the dummy shaft corresponds to the size of the pin shaft, and the jacking mechanism is arranged in the guide straight pipe; the axis of the guide straight pipe is superposed with the axis of the inner ring of the corresponding joint bearing on the furnace shell lifting lug, the top of the guide straight pipe is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe, which is far away from the furnace shell lifting lug, is provided with a limit stop; the dummy shaft and the pin shaft can be placed in the guide straight pipe through the notch; the bottom end of the jacking mechanism can abut against a limit stop; in addition, similar auxiliary devices can be arranged at the corresponding positions of the trunnion ring lifting lugs. The converter hanging structure and the corresponding dismounting method thereof avoid repeated adjustment of the position of the furnace shell for concentricity during installation of the pin shaft, and greatly improve the convenience of maintenance of the converter hanging structure.
Description
Technical Field
The invention relates to the technical field of metallurgical equipment maintenance, in particular to a converter hanging structure and a dismounting method thereof.
Background
The converter is hung and is the primary structure who connects and fix stove outer covering and backing ring, as shown in fig. 1 and fig. 2, be provided with the stove outer covering lug 2 of vertical arrangement on the stove outer covering 1, be provided with the backing ring lug 4 of vertical arrangement on the backing ring 3, stove outer covering lug 2 and backing ring lug 4 are connected through connecting rod 5, the both ends of connecting rod 5 are connected with stove outer covering lug 2 and backing ring lug 4 through round pin axle 6 respectively, and correspond on stove outer covering lug 2, backing ring lug 4 and the connecting rod 5 and penetrate all to be provided with corresponding joint bearing in the through-hole of round pin axle.
Although the structure of the converter hanger can meet the daily production requirement, the maintenance is very inconvenient. Because the joint bearing that the converter hung often needs to be changed, and in the change process, the central line that requires three joint bearing just can penetrate three joint bearing with the round pin axle on same straight line as far as possible, because round pin axle and three joint bearing cooperation are generally very tight, need adjust the position of stove outer covering repeatedly and look for concentrically when repacking, it is very inconvenient to install, and the inner circle of three joint bearing can produce about displacement about wearing the round pin axle in-process, the round pin axle is generally heavier simultaneously, the hoist and mount of round pin axle, to the hole and jacking process all need closely to cooperate, control is inconvenient, the assembly is very time-consuming and laborious.
In summary, how to solve the problem of inconvenient maintenance of the converter hanging structure becomes a technical problem to be solved urgently by the technical staff in the field.
Disclosure of Invention
The invention aims to provide a converter hanging structure and a dismounting and mounting method thereof, so as to improve the convenience of maintenance of the converter hanging structure.
In order to achieve the purpose, the invention provides a converter hanging structure which comprises a converter shell lifting lug, wherein an auxiliary device is fixedly arranged on one side of the converter shell lifting lug, which corresponds to a pin shaft in a penetrating mode, and comprises a guide straight pipe, a dummy shaft and a jacking mechanism, wherein the guide straight pipe can be matched with the outer diameter of the pin shaft, the dummy shaft corresponds to the size of the pin shaft, and the jacking mechanism is arranged in the guide straight pipe;
the axis of the guide straight pipe is superposed with the axis of the inner ring of the corresponding joint bearing on the furnace shell lifting lug, the top of the guide straight pipe is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe, which is far away from the furnace shell lifting lug, is provided with a limit stop;
the dummy shaft and the pin shaft can be placed in the guide straight pipe through the notch;
the bottom end of the jacking mechanism can be abutted against the limiting stop.
Preferably, the limit stop comprises an end plate located at an end of the guide straight tube.
Preferably, the limit stop further comprises an adjusting baffle for abutting against the bottom of the jacking mechanism, and the radial direction of the notch is provided with a pair of grooves matched with the adjusting baffle.
Preferably, the number of the paired grooves is plural, and the paired grooves are arranged at equal intervals in the axial direction of the guide straight pipe.
Preferably, a connecting flange is arranged at one end, corresponding to the furnace shell lifting lug, of the guide straight pipe, and the connecting flange is fixedly connected with the furnace shell lifting lug through a bolt.
Preferably, the outer diameter of the dummy shaft is smaller than the outer diameter of the pin shaft by 2 +/-0.5 mm.
Preferably, the dummy shaft is a steel pipe with a wall thickness of 10 mm.
Compared with the introduction content of the background technology, the converter hanging structure comprises a converter shell lifting lug, wherein an auxiliary device is fixedly arranged on one side of the converter shell lifting lug, which corresponds to the side where the pin shaft penetrates, and comprises a guide straight pipe, a dummy shaft and a jacking mechanism, wherein the guide straight pipe can be matched with the outer diameter of the pin shaft, the dummy shaft corresponds to the size of the pin shaft, and the jacking mechanism is arranged in the guide straight pipe; the axis of the guide straight pipe is superposed with the axis of the inner ring of the corresponding joint bearing on the furnace shell lifting lug, the top of the guide straight pipe is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe, which is far away from the furnace shell lifting lug, is provided with a limit stop; the dummy shaft and the pin shaft can be placed in the guide straight pipe through the notch; the bottom end of the jacking mechanism can be abutted against the limiting stop. According to the converter hanging structure, in the actual use process, the old pin shaft is ejected out through the jacking mechanism, then the corresponding joint bearing can be replaced, after the joint bearing is replaced and the concentricity is adjusted, the dummy shaft is placed into the guide straight pipe, the jacking mechanism is used for ejecting the dummy shaft into the joint bearing, the dummy shaft can be concentrically positioned on the joint bearing due to the fact that the axis of the guide straight pipe is superposed with the axis of the inner ring of the corresponding joint bearing, the new pin shaft is placed into the guide straight pipe at the moment, force is applied to the new pin shaft through the jacking mechanism, the dummy shaft is slowly ejected out through the pin shaft, and the pin shaft can be smoothly installed to the required position. The position that has avoided the round pin axle to adjust the stove outer covering repeatedly when installing looks for the concentricity, and the joint bearing inner circle is difficult to produce displacement from top to bottom by the positioning action of penetrating the dummy shaft, and then makes the round pin axle installation more smooth and easy, has promoted the convenience of converter suspended structure's maintenance greatly.
In addition, the invention also provides a method for disassembling and assembling the converter hanging structure, which is suitable for the converter hanging structure described in any scheme corresponding to the pin shaft at the lifting lug of the furnace shell, and comprises the following steps:
step S10: jacking the furnace shell and supporting and positioning the furnace shell and the backing ring, so that a pin shaft is not influenced by the acting force of a joint bearing, and the relative movement of the furnace shell and the backing ring is avoided;
step S20: ejecting the old pin shaft by using a jacking mechanism in the auxiliary device;
step S30: removing the old joint bearing;
step S40: installing a new joint bearing in place;
step S50: adjusting the concentricity of the joint bearing;
step S60: placing a dummy shaft into the guide straight pipe, jacking the dummy shaft into a new knuckle bearing by using the jacking mechanism, installing the dummy shaft in place, checking whether the deviation of the upper, lower, left and right fit clearances of the knuckle bearing and the dummy shaft is within a preset range, if not, adjusting to reach the preset range, and then entering the next step, and if so, directly entering the next step;
step S70: and putting a new pin shaft into the guide straight pipe, and applying force to the pin shaft by using the jacking mechanism to slowly eject the dummy shaft out by the pin shaft until the pin shaft is installed in place.
The method for assembling and disassembling the converter hanging structure inherits the principle of mounting the pin shaft at the position of the converter hanging structure corresponding to the furnace shell lifting lug, and the converter hanging structure has the technical effect, so the method also has the corresponding technical effect, and the details are not repeated.
Preferably, a step S31 is further included between the step S30 and the step S40: checking whether burrs and impurities exist in the furnace shell lifting lug and the joint bearing mounting hole of the corresponding connecting rod, if so, cleaning and polishing, and then entering step S40; if not, the process proceeds directly to step S40.
Preferably, a step S51 is further included between the step S50 and the step S60: and positioning a connecting rod of the converter hanging structure to prevent displacement after stress.
Preferably, a step S61 is further included between the step S60 and the step S70: and lubricating oil is smeared on the new pin shaft to be penetrated.
In addition, the invention also provides a converter hanging structure which comprises a backing ring lifting lug, wherein an auxiliary device is fixedly arranged on one side of the backing ring lifting lug, which corresponds to the side where the pin shaft penetrates, and the auxiliary device comprises a guide straight pipe, a dummy shaft and a jacking mechanism, wherein the guide straight pipe can be matched with the outer diameter of the pin shaft, the dummy shaft corresponds to the size of the pin shaft, and the jacking mechanism is arranged in the guide straight pipe;
the axis of the guide straight pipe is superposed with the axis of the inner ring of the corresponding joint bearing on the trunnion ring lifting lug, the top of the guide straight pipe is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe, which is far away from the trunnion ring lifting lug, is provided with a limit stop;
the dummy shaft and the pin shaft can be placed in the guide straight pipe through the notch;
the bottom end of the jacking mechanism can be abutted against the limiting stop.
Preferably, the limit stop comprises an end plate located at an end of the guide straight tube.
Preferably, the limit stop further comprises an adjusting baffle for abutting against the bottom of the jacking mechanism, and the radial direction of the notch is provided with a pair of grooves matched with the adjusting baffle.
Preferably, the number of the paired grooves is plural, and the paired grooves are arranged at equal intervals in the axial direction of the guide straight pipe.
Preferably, a connecting flange is arranged at one end, corresponding to the end connected with the supporting ring lifting lug, of the guide straight pipe, and the connecting flange is fixedly connected with the supporting ring lifting lug through a bolt.
Preferably, the outer diameter of the dummy shaft is smaller than the outer diameter of the pin shaft by 2 +/-0.5 mm.
Preferably, the dummy shaft is a steel pipe with a wall thickness of 10 mm.
In the converter hanging structure, the installation principle of the pin shaft corresponding to the lifting lug of the backing ring is the same as that of the pin shaft corresponding to the lifting lug of the furnace shell, so that the converter hanging structure also has the corresponding technical effect, and the details are not repeated herein.
In addition, the invention also provides a disassembly and assembly method of the converter hanging structure, which is suitable for the converter hanging structure described in any scheme of the pin shaft at the position corresponding to the trunnion ring lifting lug, and comprises the following steps:
step S10: jacking the furnace shell and supporting and positioning the furnace shell and the backing ring, so that a pin shaft is not influenced by the acting force of a joint bearing, and the relative movement of the furnace shell and the backing ring is avoided;
step S20: ejecting the old pin shaft by using a jacking mechanism in the auxiliary device;
step S30: removing the old joint bearing;
step S40: installing a new joint bearing in place;
step S50: adjusting the concentricity of the joint bearing;
step S60: placing a dummy shaft into the guide straight pipe, jacking the dummy shaft into a new knuckle bearing by using the jacking mechanism, installing the dummy shaft in place, checking whether the deviation of the upper, lower, left and right fit clearances of the knuckle bearing and the dummy shaft is within a preset range, if not, adjusting to reach the preset range, and then entering the next step, and if so, directly entering the next step;
step S70: and putting a new pin shaft into the guide straight pipe, and applying force to the pin shaft by using the jacking mechanism to slowly eject the dummy shaft out by the pin shaft until the pin shaft is installed in place.
Preferably, a step S31 is further included between the step S30 and the step S40: checking whether burrs and impurities exist in the trunnion ring lifting lugs and the joint bearing mounting holes of the corresponding connecting rods or not, if so, cleaning and polishing, and then entering step S40; if not, the process proceeds directly to step S40.
Preferably, a step S51 is further included between the step S50 and the step S60: and positioning a connecting rod of the converter hanging structure to prevent displacement after stress.
Preferably, a step S61 is further included between the step S60 and the step S70: and lubricating oil is smeared on the new pin shaft to be penetrated.
The method for dismounting the converter hanging structure inherits the installation principle of the pin shaft at the position of the corresponding backing ring lifting lug of the converter hanging structure, and the converter hanging structure has the technical effect, so the method also has the corresponding technical effect, and the details are not repeated.
Drawings
FIG. 1 is a schematic view of a conventional converter hanger structure;
FIG. 2 is a schematic sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of an installation structure of a pin shaft at a furnace shell lifting lug of a converter hanging structure provided by an embodiment of the invention;
fig. 4 is a schematic view of an installation structure of a pin shaft at a trunnion ring lug of a hanging structure of a converter provided in an embodiment of the present invention.
In the above figures 1-4 of the drawings,
the device comprises a furnace shell 1, furnace shell lifting lugs 2, backing rings 3, backing ring lifting lugs 4, connecting rods 5, pin shafts 6, guide straight pipes 7, dummy shafts 8, jacking mechanisms 9, end plates 10, paired grooves 11 and connecting flanges 12.
Detailed Description
The core of the invention is to provide a converter hanging structure and a dismounting and mounting method thereof, so as to improve the convenience of maintenance of the converter hanging structure.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 3 and 4, the converter hanging structure provided by the embodiment of the present invention includes a furnace shell lifting lug 2, wherein an auxiliary device is fixedly disposed on one side of the furnace shell lifting lug 2, which corresponds to the side where a pin 6 penetrates, and the auxiliary device includes a guide straight pipe 7 capable of adapting to the outer diameter of the pin 6, a dummy shaft 8 corresponding to the size of the pin 6, and a jacking mechanism 9 disposed in the guide straight pipe 7; the axis of the guide straight pipe 7 is superposed with the axis of the inner ring of the corresponding joint bearing on the furnace shell lifting lug 2, the top of the guide straight pipe 7 is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe 7 far away from the furnace shell lifting lug 2 is provided with a limit stop; the dummy shaft 8 and the pin shaft 6 can be placed in the guide straight pipe 7 through the notch; the bottom end of the jacking mechanism 9 can be abutted against the limit stop.
According to the converter hanging structure, in the actual use process, the old pin shaft is ejected out through the jacking mechanism, then the corresponding joint bearing can be replaced, after the joint bearing is replaced and the concentricity is adjusted, the dummy shaft is placed into the guide straight pipe, the jacking mechanism is used for ejecting the dummy shaft into the joint bearing, the dummy shaft can be concentrically positioned on the joint bearing due to the fact that the axis of the guide straight pipe is superposed with the axis of the inner ring of the corresponding joint bearing, the new pin shaft is placed into the guide straight pipe at the moment, force is applied to the new pin shaft through the jacking mechanism, the dummy shaft is slowly ejected out through the pin shaft, and the pin shaft can be smoothly installed to the required position. The position that has avoided the round pin axle to adjust the stove outer covering repeatedly when installing looks for the concentricity, and the joint bearing inner circle is difficult to produce displacement from top to bottom by the positioning action of penetrating the dummy shaft, and then makes the round pin axle installation more smooth and easy, has promoted the convenience of converter suspended structure's maintenance greatly.
In some specific embodiments, the structure form of the limit stop may be a structure form including an end plate 10 located at the end of the guide straight pipe 7, and the end plate is used for limiting the jacking mechanism; and the limit stop can also comprise an adjusting baffle plate used for being abutted against the bottom of the jacking mechanism 9, and the radial direction of the notch is provided with a pair of grooves 11 matched with the adjusting baffle plate. The jacking depth of the jacking mechanism can be adjusted by arranging the adjusting baffle plate, so that the requirement on the jacking mechanism is greatly reduced. It should be understood that the above description is only an example of the limit stop of the present invention, and other limit structures commonly used by those skilled in the art, such as a limit pin, etc., may also be used.
In some more specific embodiments, the number of the pair of grooves 11 is generally multiple, such as 3 or 2, or more than three, and the grooves are arranged at equal intervals along the axial direction of the straight guide tube 7. The initial jacking position of the jacking mechanism can be adjusted according to actual requirements through the arrangement. It should be noted that, the paired grooves here refer to 2 symmetric notches formed along the radial direction of the guide straight pipe and both sides of the notch, and are referred to as a paired groove.
In addition, generally, a connecting flange 12 is provided at one end of the straight guide pipe 7 connected to the furnace shell lifting lug 2, and the connecting flange 12 is fixedly connected to the furnace shell lifting lug 2 by bolts. The guide straight pipe is more convenient to be connected with the furnace shell lifting lug through the connecting flange, and the guide straight pipe is easy to replace after being damaged. It is understood that the connection manner of the connection flange is only a preferred example of the embodiment of the present invention, and other fixed connection manners commonly used by those skilled in the art may also be used, such as a welding manner, etc., which is only a welding manner, and is inconvenient for repair and maintenance after damage.
In addition, the outer diameter of the dummy shaft 8 is generally 2 + -0.5 mm smaller than the outer diameter of the pin shaft 6. Because the pin shaft is not matched with the inner ring of the joint bearing tightly, the dummy shaft is designed to be slightly smaller than the size of the pin shaft, so that the dummy shaft is guided in more conveniently and quickly. And the dummy shaft 8 is usually selected to be a steel pipe with a wall thickness of 10 mm. It is understood that the above-mentioned dimensions for the dummy shaft are merely preferred examples of the embodiments of the present invention, and other dimensions may be selected according to specific situations in practical applications.
In addition, the invention also provides a method for disassembling and assembling the converter hanging structure, which is suitable for the converter hanging structure described in any scheme corresponding to the pin shaft at the lifting lug of the furnace shell, and comprises the following steps:
step S10: jacking the furnace shell and supporting and positioning the furnace shell and the backing ring, so that a pin shaft is not influenced by the acting force of a joint bearing, and the relative movement of the furnace shell and the backing ring is avoided;
step S20: ejecting the old pin shaft by using a jacking mechanism in the auxiliary device;
step S30: removing the old joint bearing;
step S40: installing a new joint bearing in place;
step S50: adjusting the concentricity of the joint bearing;
step S60: placing a dummy shaft into the guide straight pipe, jacking the dummy shaft into a new knuckle bearing by using the jacking mechanism, installing the dummy shaft in place, checking whether the deviation of the upper, lower, left and right fit clearances of the knuckle bearing and the dummy shaft is within a preset range, if not, adjusting to reach the preset range, and then entering the next step, and if so, directly entering the next step;
step S70: and putting a new pin shaft into the guide straight pipe, and applying force to the pin shaft by using the jacking mechanism to slowly eject the dummy shaft out by the pin shaft until the pin shaft is installed in place.
The method for assembling and disassembling the converter hanging structure inherits the principle of mounting the pin shaft at the position of the converter hanging structure corresponding to the furnace shell lifting lug, and the converter hanging structure has the technical effect, so the method also has the corresponding technical effect, and the details are not repeated.
In some specific embodiments, a step S31 may be further included between step S30 and step S40: checking whether burrs and impurities exist in the furnace shell lifting lug and the joint bearing mounting hole corresponding to the connecting rod, if so, cleaning and polishing, and then entering step S40; if not, the process proceeds directly to step S40.
In a further embodiment, a step S51 may be further included between step S50 and step S60: the connecting rod of the converter hanging structure is positioned to prevent displacement after stress.
Further, step S61 may be further included between step S60 and step S70: and lubricating oil is smeared on the new pin shaft to be penetrated.
The invention also provides a converter hanging structure which comprises the backing ring lifting lug 4, wherein an auxiliary device is fixedly arranged on one side of the backing ring lifting lug 4, which corresponds to the side where the pin shaft 6 penetrates, and the auxiliary device comprises a guide straight pipe 7 which can be matched with the outer diameter of the pin shaft 6, a dummy shaft 8 which corresponds to the size of the pin shaft 6 and a jacking mechanism 9 which is arranged in the guide straight pipe 7; the axis of the guide straight pipe 7 is superposed with the axis of the inner ring of the corresponding joint bearing on the trunnion ring lifting lug 4, the top of the guide straight pipe 7 is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe 7, which is far away from the trunnion ring lifting lug, is provided with a limit stop; the dummy shaft 8 and the pin shaft 6 can be placed in the guide straight pipe 7 through the notch; the bottom end of the jacking mechanism 9 can be abutted against the limit stop.
In the converter hanging structure, the installation principle of the pin shaft corresponding to the lifting lug of the backing ring is the same as that of the pin shaft corresponding to the lifting lug of the furnace shell, so that the converter hanging structure also has the corresponding technical effect, and the details are not repeated herein.
In some specific embodiments, the structure form of the limit stop may be a structure form including an end plate 10 located at the end of the guide straight pipe 7, and the end plate is used for limiting the jacking mechanism; and the limit stop can also comprise an adjusting baffle plate used for being abutted against the bottom of the jacking mechanism 9, and the radial direction of the notch is provided with a pair of grooves 11 matched with the adjusting baffle plate. The jacking depth of the jacking mechanism can be adjusted by arranging the adjusting baffle plate, so that the requirement on the jacking mechanism is greatly reduced. It should be understood that the above description is only an example of the limit stop of the present invention, and other limit structures commonly used by those skilled in the art, such as a limit pin, etc., may also be used.
In some more specific embodiments, the number of the pair of grooves 11 is generally multiple, such as 3 or 2, or more than three, and the grooves are arranged at equal intervals along the axial direction of the straight guide tube 7. The initial jacking position of the jacking mechanism can be adjusted according to actual requirements through the arrangement. It should be noted that, the paired grooves here refer to 2 symmetric notches formed along the radial direction of the guide straight pipe and both sides of the notch, and are referred to as a paired groove.
In addition, generally, a connecting flange 12 is provided at one end of the guide straight pipe 7 corresponding to the end connected to the trunnion ring lifting lug 2, and the connecting flange 12 is fixedly connected to the trunnion ring lifting lug 2 by bolts. The guide straight pipe is more convenient to be connected with the supporting ring lifting lug by arranging the connecting flange, and the guide straight pipe is easy to replace after being damaged. It is understood that the connection manner of the connection flange is only a preferred example of the embodiment of the present invention, and other fixed connection manners commonly used by those skilled in the art may also be used, such as a welding manner, etc., which is only a welding manner, and is inconvenient for repair and maintenance after damage.
In addition, the outer diameter of the dummy shaft 8 is generally 2 + -0.5 mm smaller than the outer diameter of the pin shaft 6. Because the pin shaft is not matched with the inner ring of the joint bearing tightly, the dummy shaft is designed to be slightly smaller than the size of the pin shaft, so that the dummy shaft is guided in more conveniently and quickly. And the dummy shaft 8 is usually selected to be a steel pipe with a wall thickness of 10 mm. It is understood that the above-mentioned dimensions for the dummy shaft are merely preferred examples of the embodiments of the present invention, and other dimensions may be selected according to specific situations in practical applications.
The invention also provides another method for disassembling and assembling the converter hanging structure, which is suitable for the converter hanging structure described in any scheme of the pin shaft at the position corresponding to the trunnion ring lifting lug, and comprises the following steps:
step S10: jacking the furnace shell and supporting and positioning the furnace shell and the backing ring, so that a pin shaft is not influenced by the acting force of a joint bearing, and the relative movement of the furnace shell and the backing ring is avoided;
step S20: ejecting the old pin shaft by using a jacking mechanism in the auxiliary device;
step S30: removing the old joint bearing;
step S40: installing a new joint bearing in place;
step S50: adjusting the concentricity of the joint bearing;
step S60: placing a dummy shaft into the guide straight pipe, jacking the dummy shaft into a new knuckle bearing by using the jacking mechanism, installing the dummy shaft in place, checking whether the deviation of the upper, lower, left and right fit clearances of the knuckle bearing and the dummy shaft is within a preset range, if not, adjusting to reach the preset range, and then entering the next step, and if so, directly entering the next step;
step S70: and putting a new pin shaft into the guide straight pipe, and applying force to the pin shaft by using the jacking mechanism to slowly eject the dummy shaft out by the pin shaft until the pin shaft is installed in place.
In further embodiments, between the step S30 and the step S40, a step S31 may be further included: checking whether burrs and impurities exist in the furnace shell lifting lug and the joint bearing mounting hole of the corresponding connecting rod, if so, cleaning and polishing, and then entering step S40; if not, the process proceeds directly to step S40.
In still further embodiments, a step S51 may be further included between the step S50 and the step S60: and positioning a connecting rod of the converter hanging structure to prevent displacement after stress.
It should be noted that, between the step S60 and the step S70, a step S61 may be further included: and lubricating oil is smeared on the new pin shaft to be penetrated.
The method for dismounting the converter hanging structure inherits the installation principle of the pin shaft at the position of the corresponding backing ring lifting lug of the converter hanging structure, and the converter hanging structure has the technical effect, so the method also has the corresponding technical effect, and the details are not repeated.
The converter hanging structure and the disassembly and assembly method thereof provided by the invention are described in detail above. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (22)
1. A converter hanging structure comprises a converter shell lifting lug (2), and is characterized in that an auxiliary device is fixedly arranged on one side, corresponding to the side where a pin shaft (6) penetrates through, of the converter shell lifting lug (2), and the auxiliary device comprises a guide straight pipe (7) which can be matched with the outer diameter of the pin shaft (6), a dummy shaft (8) corresponding to the size of the pin shaft (6), and a jacking mechanism (9) arranged in the guide straight pipe (7);
the axis of the guide straight pipe (7) is superposed with the axis of the inner ring of the corresponding joint bearing on the furnace shell lifting lug (2), the top of the guide straight pipe (7) is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe (7) far away from the furnace shell lifting lug (2) is provided with a limit stop;
the dummy shaft (8) and the pin shaft (6) can be placed into the guide straight pipe (7) through the notch;
the bottom end of the jacking mechanism (9) can abut against the limit stop.
2. Converter hanging structure according to claim 1, characterized in that said limit stop comprises an end plate (10) at the end of said guide straight tube (7).
3. The converter hanging structure according to claim 2, wherein the limit stop further comprises an adjusting baffle for abutting against the bottom of the jacking mechanism (9), and the radial direction of the notch is provided with a pair of grooves (11) matched with the adjusting baffle.
4. A converter hanger structure according to claim 3 in which the number of the pairs of grooves (11) is plural and the grooves are arranged at equal intervals along the axial direction of the guide straight pipe (7).
5. The converter hanging structure according to claim 1, wherein a connecting flange (12) is arranged at one end of the guide straight pipe (7) corresponding to the end connected with the converter shell lifting lug (2), and the connecting flange (12) is fixedly connected with the converter shell lifting lug (2) through bolts.
6. A converter hanging structure according to any one of claims 1 to 5, wherein the outer diameter of the dummy shaft (8) is 2 ± 0.5mm smaller than the outer diameter of the pin shaft (6).
7. A converter hanging structure according to claim 6, wherein the dummy shaft (8) is a steel pipe with a wall thickness of 10 mm.
8. A method of assembling and disassembling a converter hanger structure, the method being applied to a converter hanger structure according to any one of claims 1 to 7, comprising the steps of:
step S10: jacking the furnace shell and supporting and positioning the furnace shell and the backing ring, so that a pin shaft is not influenced by the acting force of a joint bearing, and the relative movement of the furnace shell and the backing ring is avoided;
step S20: ejecting the old pin shaft by using a jacking mechanism in the auxiliary device;
step S30: removing the old joint bearing;
step S40: installing a new joint bearing in place;
step S50: adjusting the concentricity of the joint bearing;
step S60: placing a dummy shaft into the guide straight pipe, jacking the dummy shaft into a new knuckle bearing by using the jacking mechanism, installing the dummy shaft in place, checking whether the deviation of the upper, lower, left and right fit clearances of the knuckle bearing and the dummy shaft is within a preset range, if not, adjusting to reach the preset range, and then entering the next step, and if so, directly entering the next step;
step S70: and putting a new pin shaft into the guide straight pipe, and applying force to the pin shaft by using the jacking mechanism to slowly eject the dummy shaft out by the pin shaft until the pin shaft is installed in place.
9. The disassembling and assembling method according to claim 8, further comprising, between the step S30 and the step S40, a step S31 of:
checking whether burrs and impurities exist in the furnace shell lifting lug and the joint bearing mounting hole of the corresponding connecting rod, if so, cleaning and polishing, and then entering step S40; if not, the process proceeds directly to step S40.
10. The disassembling and assembling method according to claim 9, further comprising, between the step S50 and the step S60, a step S51 of:
and positioning a connecting rod of the converter hanging structure to prevent displacement after stress.
11. The disassembling and assembling method according to claim 10, further comprising, between the step S60 and the step S70, a step S61 of:
and lubricating oil is smeared on the new pin shaft to be penetrated.
12. A converter hanging structure comprises a backing ring lifting lug (4), and is characterized in that an auxiliary device is fixedly arranged on one side, corresponding to the side where a pin shaft (6) penetrates into the backing ring lifting lug (4), and comprises a guide straight pipe (7) which can be matched with the outer diameter of the pin shaft (6), a dummy shaft (8) corresponding to the size of the pin shaft (6) and a jacking mechanism (9) arranged in the guide straight pipe (7);
the axis of the guide straight pipe (7) is superposed with the axis of the inner ring of the corresponding joint bearing on the supporting ring lifting lug (4), the top of the guide straight pipe (7) is provided with a notch with half cut off along the radial direction, and one side of the guide straight pipe (7) far away from the supporting ring lifting lug is provided with a limit stop;
the dummy shaft (8) and the pin shaft (6) can be placed into the guide straight pipe (7) through the notch;
the bottom end of the jacking mechanism (9) can abut against the limit stop.
13. Converter hanging structure according to claim 12, characterized in that said limit stop comprises an end plate (10) at the end of said straight guide tube (7).
14. Converter hanging structure according to claim 13, wherein the limit stop further comprises an adjusting baffle for abutting against the bottom of the jacking mechanism (9), and the radial direction of the notch is provided with a pair of grooves (11) adapted to the adjusting baffle.
15. Converter hanging structure according to claim 14, wherein said pairs of grooves (11) are plural in number and arranged at equal intervals along the axial direction of said guide straight tube (7).
16. A converter hanging structure according to claim 12, wherein a connecting flange (12) is provided at the end of the straight guide pipe corresponding to the end connected to the trunnion ring lifting lug (4), and the connecting flange (12) is fixedly connected to the trunnion ring lifting lug (4) by bolts.
17. A converter hanger according to any of claims 12 to 16, wherein the outer diameter of the dummy shaft (8) is 2 ± 0.5mm smaller than the outer diameter of the pin (6).
18. A converter hanging structure according to claim 17, wherein the dummy shaft (8) is a steel pipe with a wall thickness of 10 mm.
19. A method of assembling and disassembling a converter hanger structure, the method being adapted to a converter hanger structure according to any one of claims 12 to 18, comprising the steps of:
step S10: jacking the furnace shell and supporting and positioning the furnace shell and the backing ring, so that a pin shaft is not influenced by the acting force of a joint bearing, and the relative movement of the furnace shell and the backing ring is avoided;
step S20: ejecting the old pin shaft by using a jacking mechanism in the auxiliary device;
step S30: removing the old joint bearing;
step S40: installing a new joint bearing in place;
step S50: adjusting the concentricity of the joint bearing;
step S60: placing a dummy shaft into the guide straight pipe, jacking the dummy shaft into a new knuckle bearing by using the jacking mechanism, installing the dummy shaft in place, checking whether the deviation of the upper, lower, left and right fit clearances of the knuckle bearing and the dummy shaft is within a preset range, if not, adjusting to reach the preset range, and then entering the next step, and if so, directly entering the next step;
step S70: and putting a new pin shaft into the guide straight pipe, and applying force to the pin shaft by using the jacking mechanism to slowly eject the dummy shaft out by the pin shaft until the pin shaft is installed in place.
20. The disassembling and assembling method according to claim 19, further comprising, between the step S30 and the step S40, a step S31 of:
checking whether burrs and impurities exist in the trunnion ring lifting lugs and the joint bearing mounting holes of the corresponding connecting rods or not, if so, cleaning and polishing, and then entering step S40; if not, the process proceeds directly to step S40.
21. The disassembling and assembling method according to claim 20, further comprising, between the step S50 and the step S60, a step S51 of:
and positioning a connecting rod of the converter hanging structure to prevent displacement after stress.
22. The disassembling and assembling method according to claim 21, further comprising, between the step S60 and the step S70, a step S61 of:
and lubricating oil is smeared on the new pin shaft to be penetrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385624.8A CN108504817B (en) | 2018-04-26 | 2018-04-26 | Converter hanging structure and disassembling and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385624.8A CN108504817B (en) | 2018-04-26 | 2018-04-26 | Converter hanging structure and disassembling and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN108504817A CN108504817A (en) | 2018-09-07 |
| CN108504817B true CN108504817B (en) | 2020-01-03 |
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| CN201810385624.8A Active CN108504817B (en) | 2018-04-26 | 2018-04-26 | Converter hanging structure and disassembling and assembling method thereof |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3156118B2 (en) * | 1994-11-28 | 2001-04-16 | コマニー株式会社 | Automatic turning device for moving wall |
| CN201089777Y (en) * | 2007-09-26 | 2008-07-23 | 首钢总公司 | Convertor plate-type flexible connecting device |
| CN102485919B (en) * | 2010-12-06 | 2013-08-07 | 中冶天工集团有限公司 | Method for installing dummy shaft of converter connecting rod suspension system |
| CN105499891B (en) * | 2016-02-03 | 2018-03-02 | 安徽马钢工程技术集团有限公司 | A kind of welding method of 3 self-aligning spherical supports |
| CN107815518A (en) * | 2017-10-17 | 2018-03-20 | 德阳万达重型机械设备制造有限公司 | A kind of installation method of ball hinged supporting device for rotary furnace body |
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