CN220413442U - Pull rod type oxygen lance support hold-down device - Google Patents
Pull rod type oxygen lance support hold-down device Download PDFInfo
- Publication number
- CN220413442U CN220413442U CN202321862955.9U CN202321862955U CN220413442U CN 220413442 U CN220413442 U CN 220413442U CN 202321862955 U CN202321862955 U CN 202321862955U CN 220413442 U CN220413442 U CN 220413442U
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- CN
- China
- Prior art keywords
- oxygen lance
- screw
- lance support
- screw rod
- rod type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 55
- 239000001301 oxygen Substances 0.000 title claims abstract description 55
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001417935 Platycephalidae Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model relates to the field of converter steelmaking equipment, in particular to a pull rod type oxygen lance support compressing device. The oxygen lance support comprises an oxygen lance support seat on an oxygen lance lifting platform, wherein screw rods are fixedly connected to the oxygen lance lifting platforms on two sides of the oxygen lance support seat, and pressing plates used for being in pressure connection with the oxygen lance support seat are sleeved on the two screw rods. The screw rod type locking device has the advantages that the original top screw jacking mode of exerting pre-tightening force from top to bottom, which cannot be used for locking, is changed into the pull rod mode of exerting tensioning force upwards from the screw rod base, and the screw rod type locking device has the advantages of being long in service life, low in transformation cost, low in maintenance cost, safe and reliable.
Description
Technical Field
The utility model relates to the field of converter steelmaking equipment, in particular to a pull rod type oxygen lance support compressing device.
Background
The prior oxygen lance support compressing device is used for compressing after centering the angle of the oxygen lance, ensures that the oxygen lance is lifted according to a set angle and does not collide with other equipment, so that the oxygen lance can smoothly pass through the oxygen lance opening. The existing oxygen lance has four supports, one of which is suspended, and the other three supports need to adjust the verticality of the oxygen lance through the pressing device. The original pressing device adopts M30 jackscrews for adjustment (see figures 3 and 4), firstly, the oxygen lance needs to be replaced frequently due to the limitation of the process service life, and the verticality of an oxygen lance support plane and an oxygen lance body is inconsistent, so that the jackscrews are different in length. Secondly, the jackscrew can not be effectively loose, when being vibrated by a water hammer, transversely moved, lifted and blown, the jackscrew can be loose, so that the angle of the gun body is deviated, and the oxygen gun head and the oxygen gun mouth collide, the oxygen gun cannot be lifted normally, and the oxygen gun mouth is damaged. Thirdly, the strength of the M30 jackscrew adopted by the original design is insufficient, and the faults of thread slipping or breakage of the jackscrew occur every year.
Disclosure of Invention
The utility model aims to provide a pull rod type oxygen lance support pressing device which can realize long-term stable looseness prevention, bear larger impact load and is safe and reliable through structural improvement aiming at the defects.
The technical scheme of the utility model is as follows: the pull rod type oxygen lance support compressing device comprises an oxygen lance support on an oxygen lance lifting platform and is characterized in that screw rods are fixedly connected to the oxygen lance lifting platforms on two sides of the oxygen lance support, and pressing plates used for being in compression joint with the oxygen lance support are sleeved on the two screw rods.
In the above scheme, the method further comprises:
the lower end of the screw is provided with a screw base, and the screw base is welded with the oxygen lance lifting platform.
The lower section of the screw thread of the screw rod is flat.
The utility model has the advantages that:
1. the pressing plate can be ensured not to loosen within one month, and the pressing plate can be inspected and fastened once every month, so that the labor intensity is reduced.
2. The new thread size can bear larger impact force, avoid the faults of thread sliding buckle and screw fracture, and reduce the fault times.
3. The device only needs to change the jackscrew seat and the pressing plate in the original design, and is convenient to reform.
4. The screw rod type locking device has the advantages that the original top screw jacking mode of exerting pre-tightening force from top to bottom, which cannot be used for locking, is changed into the pull rod mode of exerting tensioning force upwards from the screw rod base, and the screw rod type locking device has the advantages of being long in service life, low in transformation cost, low in maintenance cost, safe and reliable.
Embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic left-hand view of fig. 1.
FIG. 3 is a schematic diagram of the utility model prior to modification.
Fig. 4 is a schematic left-hand view of fig. 3.
Detailed Description
Referring to fig. 1 and 2, the names of the parts are as follows: nut 1, screw rod 2, clamp plate 3, screw rod base 4, oxygen rifle support 5, oxygen rifle central line 8, oxygen rifle lift platform 9.
Referring to fig. 3 and 4, the part names are as follows: the device comprises a pressing plate 3, a gasket set 4, an oxygen lance support 5, jackscrews 6 and jackscrew seats 7.
Referring to fig. 1 and 2, the pull rod type oxygen lance support compressing device comprises an oxygen lance support 5 on an oxygen lance lifting platform 9, which is not fixedly connected. The oxygen lance lifting platforms 9 on two sides of the oxygen lance support 5 are fixedly connected with screws 2, two screws 2 are sleeved with pressing plates 3 used for being in pressure connection with the oxygen lance support 5, the pressing plates 3 are long, the upper pressing plates 3 in fig. 1 are virtual positions (shown by dotted lines) after being moved upwards, and the distance is adjusted to be a on the screws 2. The lower end of each screw rod 2 is provided with a screw rod base 4, and the screw rod base 4 is welded with an oxygen lance lifting platform 9. The lower section of the screw thread of the screw rod 2 is flat, so that the flat milling part can be inserted into the gap of the jackscrew seat 7. The upper end of the screw rod 2 is provided with two nuts 1. The jackscrew 6 jacking mode of applying pre-tightening force from top to bottom, which cannot be used for loosening prevention, is changed into the pull rod mode of applying tensioning force upwards from the screw base 4, and the anti-loosening device has the characteristics of long service life, low transformation cost, low maintenance cost, safety and reliability.
The screw rod 2 of the device uses M48X 280mm bolts to machine the polish rod part and the hexagon head part 130mm long into flat heads with the diameter of 40mm and the width of 34.5mm, so that the screw rod 2 and the pressing plate 3 form rigid connection. The clamp plate 3 is used for wearing screw rod 2 in original jackscrew position processing two phi 55mm through-holes, passes the through-hole with M48 bolt screw thread one side after the clearance installation face, and two M48 nuts are installed to the screw thread side and fasten and are locking, and clamp plate 3 can be on the screw thread highly be the displacement of a from top to bottom, and the adjustment gasket thickness can be selected in a value range, changes the original bulb jackscrew that applies pretightning force of screwing down into the ascending welding footing screw rod 2 of screw thread after improving (see fig. 1, 2). The device is put into use, makes originally unable loose top down exert the jackscrew top-up form of pretightning force, changes into the pull rod form of upwards exerting the tensioning force from screw rod base 4, and screw rod base 4 and oxygen rifle lift platform 9 connected mode be welding rigid connection, can share most vibration, and other vibrations can also carry out mechanical locking through forms such as spring washer and double nut, avoid the clamp plate not hard up.
The transformation process comprises the following steps:
and manufacturing a pressing plate 3, and reserving a phi 55mm through hole at the position of the original design jackscrew 6 for penetrating the screw rod 2.
The screw rod 2 can be manufactured by machining or by using a ready-made bolt machine, and the specific size is calculated according to the actual field. The front side of the screw rod 2 is provided with a thread with the length of more than 100mm, and the rear side of the thread is milled and flattened according to the spacing between the on-site jackscrew seats 7, so that the milled and flattened part can be inserted into the gap between the jackscrew seats 7.
And removing the pressing plate 3 and the jackscrew 6 of the original designed pressing device.
The jackscrew seat 7 is transformed into the screw base 4: the redundant part of the upper part of the jackscrew seat 7 in the original design is cut off, and the specific rest height is 10mm-20mm lower than the height of the oxygen lance support 5. The original design jackscrew seat 7 can be completely removed, and the manufactured screw base 4 can be welded again, but attention should be paid to the fact that the screw base 4 must be aligned again when being installed.
The flat head of the screw rod is vertically inserted into the gap of the rest part of the jackscrew seat 7, and the two sides are continuously welded, so that the welding is firm.
The platen 3 with the through hole is installed so that the screw 2 is threaded through the platen 3.
The screw rod 2 is provided with a nut 1 on the screw thread, the angle centering of the oxygen lance is adjusted according to the actual condition of the site, the nut 1 is fastened, and the equipment cap is added and fastened.
The above description is only of specific embodiments of the present utility model, and the various illustrations do not limit the essential content of the present utility model.
Claims (3)
1. The pull rod type oxygen lance support compressing device comprises an oxygen lance support (5) on an oxygen lance lifting platform (9), and is characterized in that screw rods (2) are fixedly connected to the oxygen lance lifting platforms (9) on two sides of the oxygen lance support (5), and two pressing plates (3) used for being in compression joint with the oxygen lance support (5) are sleeved on the two screw rods (2).
2. The pull rod type oxygen lance support compressing device according to claim 1, wherein the lower end of the screw rod (2) is provided with a screw rod base (4), and the screw rod base (4) is welded with the oxygen lance lifting platform (9).
3. Pull rod type oxygen lance holder pressing device according to claim 1 or 2, characterized in that the lower section of the thread of the screw (2) is flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321862955.9U CN220413442U (en) | 2023-07-17 | 2023-07-17 | Pull rod type oxygen lance support hold-down device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321862955.9U CN220413442U (en) | 2023-07-17 | 2023-07-17 | Pull rod type oxygen lance support hold-down device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220413442U true CN220413442U (en) | 2024-01-30 |
Family
ID=89654410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321862955.9U Active CN220413442U (en) | 2023-07-17 | 2023-07-17 | Pull rod type oxygen lance support hold-down device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220413442U (en) |
-
2023
- 2023-07-17 CN CN202321862955.9U patent/CN220413442U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |