CN202530116U - Big nut fastening tool for large converter three-point spherical surface support device - Google Patents
Big nut fastening tool for large converter three-point spherical surface support device Download PDFInfo
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- CN202530116U CN202530116U CN2012200312122U CN201220031212U CN202530116U CN 202530116 U CN202530116 U CN 202530116U CN 2012200312122 U CN2012200312122 U CN 2012200312122U CN 201220031212 U CN201220031212 U CN 201220031212U CN 202530116 U CN202530116 U CN 202530116U
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- big nut
- fixing sleeve
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- sphere
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Abstract
A big nut fastening tool for a large converter three-point spherical surface support device is characterized by including a fixing sleeve sleeved on a big nut for the connection of an upper concave-convex spherical face and a lower concave-convex spherical face, of a three-point spherical surface support device, fastening synchronous oil cylinders symmetrically arranged on the two sides of the fixing sleeve and fastening push rods thereof; and the big nut fastening tool is used for pushing the fixing sleeve and fastening the big nut for the connection of the upper concave-convex spherical face and the lower concave-convex spherical face. As per the big nut fastening tool for the large converter three-point spherical surface support device, the nut is drawn and pre-tightened through a big spanner via a 1 t chain block, after the pretension, a special fixing sleeve can be matched with two 100 t hydraulic jacks to tighten the nut finally as per the tightening torque, so that the fastening is realized conveniently and quickly.
Description
Technical field
The utility model relates to nut clamping device, and particularly, the utility model relates to 3 sphere bracing or strutting arrangements of a kind of mammoth conveter and uses the big nut tightening device.
Background technology
3 sphere bracing or strutting arrangements are that ladle is supported and effectively protection and custom-designed device. 3 sphere bracing or strutting arrangements of large-scale (for example 300 tons) converter are the vitals that converter trunnion ring is connected with body of heater, and it is mainly used in the weight of carrying converter shell, backup lining brick and body of heater auxiliary facility.Converting iron, tapping and deslagging when converter fascinates when operation; Rely on top, the bottom sphere group of said 3 sphere bracing or strutting arrangements to come the angle between converter body and backing ring is carried out the automatic adjustment of microcosmic exactly, and prevent the stress relief behind the nonaffine deformation generation stress because furnace shell is heated.
In the past; Large converter shell belongs to the thin-wall case structure that the double inclined plane multiple spot is controlled structure usually; Receive the effect of high temperature, gravity and tilt torque for a long time; Furnace shell can deform under the comprehensive action of mechanical stress, thermal stresses and thermal expansion stress, and the raising of productivity and the material character of backup lining brick all can quicken the Deformation velocity of furnace shell.And owing to working life is long; Shaft and the distortion of furnace crown thermal fatigue are very serious; The distortion of furnace crown portion has badly influenced the quality that refractory lining is built by laying bricks or stones; Shaft portion causes furnace shell not have the gap between with backing ring in the distortion of stokehold direction, has had a strong impact on the safety in production of converter, so must change furnace shell.
In addition, the double inclined plane multiple spot is controlled structure, is the technology of the 1950's; The domestic structure of generally using at present 3 spheres to support, the inclined-plane back up pad generally after using 3 years, will to occur loosening because the double inclined plane multiple spot is controlled, and in grate fascinates process, produces the swash plate slippage; Cause that body of heater impacts, can send impulsive sound and hard extruding sound before rocking simultaneously, bigger to the steel plate stretching attenuate influence of furnace shell shaft section; And the taper liner plate in the double inclined plane structure is prone to loosening; Maintenance load is very big, and can't thoroughly keep in repair, and repair quality can't ensure.
The work of 3 sphere bracing or strutting arrangements of converter is following:
3 sphere bracing or strutting arrangements of converter have three point of suppon; The position distribution situation of these three point of suppon is; A point of suppon is positioned on the medullary ray of body of heater tap hole offside backing ring; All the other two point of suppon are the hexagonal angle position and are provided with it, each point of suppon all is made up of the horizontal pin axle bed 10, horizontal bearing pin 2, joint bolt 3, nut 4 and the upper and lower two groups of concavo-convex sphere groups 5,6 that are welded on the converter trunnion ring.As shown in Figure 1.
The bolt size of 3 sphere supports is generally M315mm, and the bearing pin center is generally 1100mm to bolt end face distance; Whole 3 sphere stay-bolts can weigh about 3.5t, and big nut corresponding with it can weigh about 300kg equally.
When above-mentioned 3 sphere bracing or strutting arrangements are changed, 3 sphere big nuts are installed, its Tightening moment and fastening method are fastened with significantly different with general nut.Because the big nut volume is big, Heavy Weight carries out operation by manual work and is difficult to realize.
In the past, people used a cover big nut tightening device usually, promptly were similar to the big spanner that plum blossom is hit spanner.
Yet because two stages of the fastening branch of big nut (pretension is with tight eventually), in the nut pretension, employing one cover is similar to the big spanner that plum blossom is hit spanner, but is difficult to realize because of nut heavily carries out operation by manual work.
The utility model content
For addressing the above problem, the purpose of the utility model is, provides a kind of upper and lower two groups of concavo-convex spheres that are used for fastening 3 sphere bracing or strutting arrangements to connect the tightening device with big nut.Said tightening device is as the tight special tool at end after the said big nut pretension; Promptly; Utilizing 1 1t jack to pull through big spanner, the big nut nut that connects upper and lower two groups of concavo-convex spheres is carried out utilizing the said tightening device of the utility model according to the Tightening moment requirement again after the pretension; And it carries out end tightly to cooperate the hydraulic pressure jack pair, and promptly this just can reach the requirement of fastening big nut easily and quickly.
The utility model technical scheme is following:
3 sphere bracing or strutting arrangements of a kind of mammoth conveter are used the big nut tightening device, it is characterized in that, said big nut tightening device comprises; The upper and lower two groups of concavo-convex spheres that are sheathed on 3 sphere bracing or strutting arrangements connect with the fixing sleeve on the big nut; Be symmetricly set in the fastening of said fixing sleeve two sides with synchronous fuel tank and the fastening push rod of using thereof; Be used to promote fixing sleeve, upper and lower two groups of concavo-convex spheres connected carry out fastening with big nut.
3 sphere bracing or strutting arrangements of a kind of mammoth conveter according to the utility model are used the big nut tightening device; It is characterized in that said be symmetricly set in said fixing sleeve two sides fastening with synchronous fuel tank and fasteningly be arranged at the fastening of homonymy respectively with on the cushion block with push rod.
3 sphere bracing or strutting arrangements of a kind of mammoth conveter according to the utility model are used the big nut tightening device, it is characterized in that, saidly fasteningly are arranged at the fastening with on the gusset of homonymy respectively with cushion block.
3 sphere bracing or strutting arrangements of a kind of mammoth conveter according to the utility model are used the big nut tightening device, it is characterized in that, on the said fastening big flange that is arranged at fixing body of heater with gusset.
Use the big nut tightening device according to 3 sphere bracing or strutting arrangements of the described a kind of mammoth conveter of the utility model, it is characterized in that, said fixing sleeve structure is that Internal and external cycle all is multiple tooth plum wrench structure.
Thus; Utilize 1 1t jack to pull pre-load nut through big spanner, after pretension is accomplished, utilize special-purpose fixing sleeve again according to the Tightening moment requirement; Can cooperate 2 100 tons of whisky jack that it is carried out end tightly, so that reach the fastening requirement fast, simply.
Use the big nut tightening device according to 3 sphere bracing or strutting arrangements of a kind of mammoth conveter of the utility model; Utilize 1 1t jack to pull pre-load nut through big spanner; After pretension is accomplished; Utilize special-purpose fixing sleeve according to the Tightening moment requirement again, can cooperate 2 100 tons of whisky jack that it is carried out end tightly, promptly just can reach fastening requirement easily and quickly.
Description of drawings
Fig. 1 is 3 sphere bracing or strutting arrangement synoptic diagram.
Fig. 2 is the fixing sleeve synoptic diagram of the utility model big nut tightening device.
Fig. 3 uses synoptic diagram for fixing sleeve.
Fig. 4 A, B are respectively the revolving furnace body master and look and vertical view.
Fig. 5 is 3 fastening schematic top plan view of sphere bracing or strutting arrangement in A-A place of Fig. 4 B.
Among the figure, 1 is 3 sphere bracing or strutting arrangements of converter, and 2 is horizontal bearing pin, and 3 is joint bolt, and 4 is the joint nut; The upper and lower two groups of concavo-convex spheres of 5,6 difference, 7 is the big flange of body of heater, 8 is converter trunnion ring; 9 is revolving furnace body, and 10 is the horizontal pin axle bed, and 11 is tap hole, and 12 is fire door; 13 is fixing sleeve, and 14 is the fastening synchronous fuel tank of using, and 15 is the fastening cushion block of using, and 16 is gusset.
Embodiment
Below, with reference to accompanying drawing, 3 the sphere bracing or strutting arrangements of mammoth conveter that specify the utility model are used the big nut tightening device.
3 sphere bracing or strutting arrangements of a kind of mammoth conveter are used the big nut tightening device, it is characterized in that, said big nut tightening device comprises; The upper and lower two groups of concavo-convex spheres that are sheathed on 3 sphere bracing or strutting arrangements connect with the fixing sleeve on the big nut; Be symmetricly set in the fastening of said fixing sleeve two sides with synchronous fuel tank and the fastening push rod of using thereof; Be used to promote fixing sleeve, upper and lower two groups of concavo-convex spheres connected carry out fastening with big nut.
Said be symmetricly set in said fixing sleeve two sides fastening with synchronous fuel tank and fasteningly be arranged at the fastening with on the cushion block of homonymy respectively with push rod saidly fasteningly is arranged at the fastening with on the gusset of homonymy respectively with cushion block.
According to present embodiment, on the said fastening big flange that is arranged at fixing body of heater with gusset.
According to present embodiment, said fixing sleeve structure is that Internal and external cycle all is multiple tooth plum wrench structure.
Said big nut tightening device is used for after the pretension, and said pretension special tool comprises big spanner and pulls the jack tightening device of pre-load nut.
Said big spanner structure is that inner ring is multiple tooth plum blossom form spanner structure, and the jack tightening device structure of said pulling pre-load nut is: an end of jack is fixed on the body of heater, on the illustrated pretension spanner afterbody small sircle hole, through tightening up the jack pre-load nut.
Said end, tight special tool comprised fixing sleeve.Said fixing sleeve structure is that Internal and external cycle all is multiple tooth fixing sleeve structure.
Thus; Utilize 1 1t jack to pull pre-load nut through big spanner; After pretension is accomplished; The tightening device that fixing sleeve is set that utilizes the utility model again can cooperate 2 100 tons of whisky jack that it is carried out end tightly, so that reach the fastening requirement fast, simply according to the Tightening moment requirement.
Claims (5)
1. 3 sphere bracing or strutting arrangements of a mammoth conveter are used the big nut tightening device, it is characterized in that said big nut tightening device comprises; The upper and lower two groups of concavo-convex spheres that are sheathed on 3 sphere bracing or strutting arrangements connect with the fixing sleeve on the big nut; Be symmetricly set in the fastening of said fixing sleeve two sides with synchronous fuel tank and the fastening push rod of using thereof; Be used to promote fixing sleeve, upper and lower two groups of concavo-convex spheres connected carry out fastening with big nut.
2. 3 sphere bracing or strutting arrangements of a kind of mammoth conveter as claimed in claim 1 are used the big nut tightening device; It is characterized in that said be symmetricly set in said fixing sleeve two sides fastening with synchronous fuel tank and fasteningly be arranged at the fastening of homonymy respectively with on the cushion block with push rod.
3. 3 sphere bracing or strutting arrangements of a kind of mammoth conveter as claimed in claim 2 are used the big nut tightening device, it is characterized in that, saidly fasteningly are arranged at the fastening with on the gusset of homonymy respectively with cushion block.
4. 3 sphere bracing or strutting arrangements of a kind of mammoth conveter as claimed in claim 3 are used the big nut tightening device, it is characterized in that, said fixing sleeve structure is that Internal and external cycle all is multiple tooth plum wrench structure.
5. 3 sphere bracing or strutting arrangements of a kind of mammoth conveter as claimed in claim 3 are used the big nut tightening device, it is characterized in that, on the said fastening big flange that is arranged at fixing body of heater with gusset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200312122U CN202530116U (en) | 2012-01-31 | 2012-01-31 | Big nut fastening tool for large converter three-point spherical surface support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200312122U CN202530116U (en) | 2012-01-31 | 2012-01-31 | Big nut fastening tool for large converter three-point spherical surface support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202530116U true CN202530116U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200312122U Expired - Lifetime CN202530116U (en) | 2012-01-31 | 2012-01-31 | Big nut fastening tool for large converter three-point spherical surface support device |
Country Status (1)
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| CN (1) | CN202530116U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932391A (en) * | 2017-11-20 | 2018-04-20 | 陈壮壮 | A kind of explosion-proof type spanner being used under Flammable atmosphere |
| CN113478436A (en) * | 2021-06-30 | 2021-10-08 | 河南中原特钢装备制造有限公司 | Large-diameter large-pitch thread tightening device and manufacturing method thereof |
-
2012
- 2012-01-31 CN CN2012200312122U patent/CN202530116U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107932391A (en) * | 2017-11-20 | 2018-04-20 | 陈壮壮 | A kind of explosion-proof type spanner being used under Flammable atmosphere |
| CN107932391B (en) * | 2017-11-20 | 2019-06-14 | 新沂市新维气体有限公司 | A kind of explosion-proof type spanner under Flammable atmosphere |
| CN113478436A (en) * | 2021-06-30 | 2021-10-08 | 河南中原特钢装备制造有限公司 | Large-diameter large-pitch thread tightening device and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |