CN204509433U - The hollow feeding main shaft structure of adjustable dynamic load - Google Patents
The hollow feeding main shaft structure of adjustable dynamic load Download PDFInfo
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- CN204509433U CN204509433U CN201420074195.XU CN201420074195U CN204509433U CN 204509433 U CN204509433 U CN 204509433U CN 201420074195 U CN201420074195 U CN 201420074195U CN 204509433 U CN204509433 U CN 204509433U
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- main shaft
- bearing device
- dynamic load
- headstock
- hollow feeding
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Abstract
The utility model discloses a kind of component of non-ferrous metal smelting-casting equipment furnace refining getter, particularly relate to the hollow feeding main shaft structure of a kind of adjustable dynamic load for furnace refining getter; The hollow feeding main shaft structure of adjustable dynamic load of the present utility model, under default working temperature long-time stable rotate, effectively control resonant frequency, anti-locking system because of resonance reason damage ring too early; Comprise main shaft and spindle box mechanism, spindle box mechanism comprises headstock and arranges respectively and be sealed in front bearing device and the rear bearing device of headstock front and back ends, main shaft passes through front bearing device and rear bearing device and headstock at corresponding bearing position and forms supporting structure, main shaft is provided with dynamic load dish between front bearing device and rear bearing device, and dynamic load dish moves axially relatively on main shaft; Main shaft is also provided with drift stop.
Description
Technical field
The utility model includes the component technical field of non-ferrous metal smelting-casting equipment furnace refining getter, particularly relates to the hollow feeding main shaft structure of a kind of adjustable dynamic load.
Background technology
In aluminum casting production technique, the temperature of molten aluminium is 710 DEG C, in the stove of molten aluminium stove/holding furnace, ambient temperature can reach more than 1000 DEG C, this high temperature is all a kind of acid test for the equipment in stokehold operation, under normal circumstances, the front-end of spindle shaft coupling position of furnace refining getter can reach about 200 ~ 300 DEG C, even if there is cooling down guarantee, bearing portion near fire door one end also can more than 100 DEG C, reliable bearing support pattern under normal temperature, at high temperature may lose efficacy because of thermal distortion, and then the normal operation of the equipment of obstruction, directly affect Foundry Production, meanwhile, the configuration design factor of the main shaft that furnace refining getter is equipped with, its resonant speed often appears in certain working speed interval range, causes system resonance, affects refining effect.
Prior art, as " mechanical design handbook " book, although provide multiple axle support structure, be all difficult to the main axle structure requirement be applicable to completely needed for furnace refining getter, easily occur various problems: 1) device front end is near thermal source, the easy expanded by heating of anterior bearing position is even stuck; 2) rigidity main shaft resonant frequency is positioned at working speed interval, easily causes system resonance.In addition, external analogous products main shaft adopts full 316L stainless material to make, though ensure that main shaft self can not be corroded by refining agent, with high costs, difficulty of processing is larger.
Utility model content
For solving the problems of the technologies described above, the utility model provide a kind of under default working temperature long-time stable rotate, effectively control resonant frequency, anti-locking system damages the hollow feeding main shaft structure of adjustable dynamic load of ring too early because of resonance reason.
The hollow feeding main shaft structure of adjustable dynamic load of the present utility model, comprise main shaft and spindle box mechanism, described spindle box mechanism comprises headstock and arranges respectively and be sealed in front bearing device and the rear bearing device of described headstock front-end and back-end, the middle part of described main shaft and tail end are rotatedly connected respectively by described front bearing device and rear bearing device and described headstock, described main shaft is also provided with dynamic load dish between described front bearing device and rear bearing device, and described dynamic load dish moves axially relatively on described main shaft.
Further, the distance of described front bearing device and described front-end of spindle is H
1, the spacing of described front bearing device and rear bearing device is H, described H
1be greater than 0.85 with the ratio of H and be less than 1.
Further, the axle center place of described main shaft is provided with the through hole running through whole main shaft vertically, is provided with embedded center transfer lime in described through hole, and the tail end of described main shaft is provided with the swivel joint communicated with described center transfer lime.
Further, described center transfer lime is 316L stainless steel center transfer lime, and main shaft is 304 stainless steel main shafts.
Further, described front bearing device comprise the front bearing be arranged on main shaft, fixing front bearing front round nut and to be connected on headstock and to lay respectively at the front end shield of front bearing front and tail end-side and front capping, described main shaft, front bearing, front end shield, front capping and headstock are sealed into front oil sump, described headstock is provided with communicate with front oil sump send hydraulic fluid port.
Further, described rear bearing device comprise the rear bearing be arranged on main shaft, fixing rear bearing rear round nut and to be connected on headstock and to lay respectively at rear seal-cover and the rear head of rear bearing front and tail end-side, described main shaft, rear bearing, rear head, rear seal-cover and headstock are sealed into rear oil sump, described headstock is provided with communicate with rear oil sump send oil nozzle.
Further, the tail end of described main shaft is provided with synchronous belt drive mechanism.
Further, the tail end of described main shaft is connected with the swivel joint be connected with center transfer lime.
Further, described headstock is also provided with the drift stop for realizing spline object.
Compared with prior art the beneficial effects of the utility model are: the hollow feeding main shaft structure of adjustable dynamic load of the present utility model is the major parts of furnace refining getter, there is following advantage: 1) for providing reliable connection between mair motor and load, transmit power and moment of torsion, make main shaft/shaft coupling system under the hot environment more than 300 DEG C, maintain the stabilized (steady-state) speed of the highest 500RPM, and control graphite bars whipping, reduce liquid aluminum and seethe; 2) effectively control resonant frequency, anti-locking system because of resonance reason damage ring too early; 3) main shaft body is 304 stainless steels, only has the center transfer lime of contact refining agent just to use 316L corrosion-resistant stainless steel to make, effectively reduces costs under the prerequisite not affecting use properties; 4) to make moist latch up phenomenon if there is refining agent, or need the refining agent changing other kinds even to use chlorine refining instead, can under the prerequisite of not changing main-spindle maintenance or more switching center9's transfer lime, safeguard operation cost to reduce.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the hollow feeding main shaft structure of adjustable dynamic load of the present utility model, comprise main shaft 11 and spindle box mechanism, spindle box mechanism comprises headstock 2 and arranges respectively and be sealed in front bearing device and the rear bearing device of headstock 2 front-end and back-end, and the middle part of main shaft and tail end are rotatedly connected respectively by front bearing device and rear bearing device and headstock; Front bearing device comprise the front bearing 12 be arranged on main shaft, fixing front bearing front round nut 13 and to be connected on headstock 2 and to lay respectively at front end shield 1 and the front capping 4 of front bearing 12 front and tail end-side, main shaft 11, front bearing 12, front end shield 1, front capping 4 are sealed into front oil sump with headstock 2, headstock 2 is provided with communicate with front oil sump send hydraulic fluid port 3, send hydraulic fluid port 3 to be connected with external recycle pump oil machine structure by copper pipe; Rear bearing device comprise the rear bearing 16 be arranged on main shaft, fixing rear bearing rear round nut 17 and to be connected on headstock 2 and to lay respectively at rear seal-cover 5 and the rear head 7 of rear bearing 16 front and tail end-side, main shaft 11, rear bearing 16, rear head 7, rear seal-cover 5 and headstock 2 are sealed into rear oil sump, headstock 2 is provided with communicate with rear oil sump send oil nozzle 6; Main shaft 11 is also provided with dynamic load dish 14 between front bearing device and rear bearing device, and dynamic load dish 14 moves axially relatively on main shaft 11; The distance of front bearing device and front-end of spindle is H
1, the spacing of front bearing device and rear bearing device is H, H
1be greater than 0.85 with the ratio of H and be less than 1; The axle center place of main shaft 11 is provided with the through hole running through whole main shaft vertically, is provided with embedded center transfer lime 10 in through hole, and the tail end of main shaft is provided with the swivel joint 9 communicated with center transfer lime 10; The tail end of main shaft is provided with synchronous belt drive mechanism 8; Headstock 2 is also equipped with drift stop 15, coordinates the brake(-holder) block on main shaft 11 realize spline object and provide corresponding safety control.
During installation, swivel joint, front bearing, front round nut, rear bearing, rear round nut are arranged on main shaft in advance successively, center transfer lime is embedded into and runs through in the through hole of spindle axis, main shaft is from left to right in unidirectional loading headstock, synchronous belt drive mechanism is installed at rear portion, and dynamic load dish and brake(-holder) block are finally arranged on main shaft.
When mainshaft mechanism normally works, according to burner hearth inclination angle, main shaft center line becomes the inclination angle of 15-35 ° with sea line, carries out refining degasification operation to facilitate graphite bars to stretch in molten aluminium.Main shaft protracts H
1with the ratio 0.85 < H of distance between bearings H
1: H < 1, to prevent the long flexible whipping caused of front end cantilever; Extend bearing to the distance of thermal source simultaneously as far as possible, avoid thermal conduction cause front bearing overheated and lost efficacy.
Main shaft adopts 304 stainless steels, front end is provided with Big Diameter Flange, headstock high quality carbon steel plate butt welding car system, and do not adopt conventional double cutting design and adopt compact straight pass to design, main shaft (containing bearing and round nut) can from left to right in unidirectional loading headstock, firmly main shaft is axially fixed in the desired location of headstock by the positioning step on rear seal-cover, rear end rear head is locked; In order to easy for installation, front bearing outer ring Φ D can be made
1diameter is greater than rear bearing race diameter Φ D
2.Adopt shrink-fit between the inner ring shaft part corresponding to main shaft of each bearing in front and back, deep fat heating mode need be adopted to be installed on main shaft, and outer ring and main shaft bore position adopt running fit, and front bearing can be indoor along freely move axially among a small circle with main shaft at its installation cavity.Whole mechanism forms fixing/travelling main shaft supporting mechanism.As shown in Figure 1, front end shield, headstock, hydraulic fluid port, front capping and main shaft is sent cooperatively to form a closed bunker, A place connects external recycle pump oil machine structure and connects stow away from heat with copper pipe, by sending hydraulic fluid port at the indoor formation oil sump of front bearing, to lubricate and to cool front bearing, send oil nozzle due to stow away from heat, directly can pump into lubricating grease and adopt grease lubrication.
The technique speed range of furnace refining getter demand is generally 0-500RPM, and the resonant speed of the stiff shaft designed according to actual user demand often just (is generally 300-330RPM) within the scope of this, therefore on main shaft, be designed with dynamic load dish, by adjusting the size of the spacing h of dynamic load dish and front bearing, change the equivalent diameter of this shaft part main shaft, and then the rotational inertia of relative changes main shaft, the resonant speed of final change main shaft, make it not on technique tachometer value point, to prevent complete machine from entering resonance state, cause unpredictable consequence.
When furnace refining getter carries out refinery process, must by quantitative refining agent, be pushed in molten aluminium by the rare gas element (argon gas or nitrogen) of certain pressure, general refining agent main component is villaumite, has stronger oxidation corrosion effect to metal.Embedded center transfer lime adopts corrosion resistant 316L stainless steel to make, and embeds it and runs through in the central through hole of holoaxial, and connect the swivel joint of rear-end of spindle by the embedding mechanism of main shaft front and back end.Namely air conveying refining agent powder enters into the molten aluminium in stove smoothly by the path of swivel joint-> center transfer lime-> graphite bars centre hole.To make moist latch up phenomenon if there is refining agent, or need the refining agent changing other kinds even to use chlorine refining instead, can under the prerequisite of not changing main-spindle maintenance or more switching center9's transfer lime, safeguard operation cost to reduce.
Furnace refining getter is when carrying out maintenance of the equipment, and during as carried out shaft coupling and main shaft dismounting, need main shaft to forbid rotating, now closed drift stop, fixes main shaft; If when complete machine power-off service and drift stop cannot work, spline is carried out to main shaft in the spanner position also accommodating K place by spanner.Furnace refining getter, in any working order, when occurring abnormal, stops in emergency by drift stop, and interlock simultaneously closes mair motor and other devices, the generation of restriction accident.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (9)
1. the hollow feeding main shaft structure of adjustable dynamic load, it is characterized in that, comprise main shaft and spindle box mechanism, described spindle box mechanism comprises headstock and arranges respectively and be sealed in front bearing device and the rear bearing device of headstock front and back ends, described main shaft passes through front bearing device and rear bearing device and headstock at corresponding bearing position and forms supporting structure, described main shaft is provided with dynamic load dish between front bearing device and rear bearing device, and described dynamic load dish moves axially relatively on main shaft.
2. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, is characterized in that, the distance of described front bearing device and described front-end of spindle is H
1, the spacing of described front bearing device and rear bearing device is H, described H
1be greater than 0.85 with the ratio of H and be less than 1.
3. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, it is characterized in that, the axle center place of described main shaft is provided with the through hole running through whole main shaft vertically, be provided with embedded center transfer lime in described through hole, the tail end of described main shaft is provided with the swivel joint communicated with described center transfer lime.
4. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 3, is characterized in that, described center transfer lime is 316L stainless steel center transfer lime, and main shaft is 304 stainless steel main shafts.
5. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, it is characterized in that, described front bearing device comprise the front bearing be arranged on main shaft, fixing front bearing front round nut and to be connected on headstock and to lay respectively at the front end shield of front bearing front and tail end-side and front capping, described main shaft, front bearing, front end shield, front capping and headstock are sealed into front oil sump, described headstock is provided with communicate with front oil sump send hydraulic fluid port.
6. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, it is characterized in that, described rear bearing device comprise the rear bearing be arranged on main shaft, fixing rear bearing rear round nut and to be connected on headstock and to lay respectively at rear seal-cover and the rear head of rear bearing front and tail end-side, described main shaft, rear bearing, rear head, rear seal-cover and headstock are sealed into rear oil sump, described headstock is provided with communicate with rear oil sump send oil nozzle.
7. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, it is characterized in that, the tail end of described main shaft is provided with synchronous belt drive mechanism.
8. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, is characterized in that, the tail end of described main shaft is connected with the swivel joint be connected with center transfer lime.
9. the hollow feeding main shaft structure of adjustable dynamic load as claimed in claim 1, is characterized in that, described headstock is also provided with the drift stop for realizing spline object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074195.XU CN204509433U (en) | 2014-02-20 | 2014-02-20 | The hollow feeding main shaft structure of adjustable dynamic load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074195.XU CN204509433U (en) | 2014-02-20 | 2014-02-20 | The hollow feeding main shaft structure of adjustable dynamic load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204509433U true CN204509433U (en) | 2015-07-29 |
Family
ID=53707427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074195.XU Withdrawn - After Issue CN204509433U (en) | 2014-02-20 | 2014-02-20 | The hollow feeding main shaft structure of adjustable dynamic load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204509433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866136A (en) * | 2014-02-20 | 2014-06-18 | 南宁艾德机械工程有限公司 | Adjustable movable load hollow feeding spindle structure |
-
2014
- 2014-02-20 CN CN201420074195.XU patent/CN204509433U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103866136A (en) * | 2014-02-20 | 2014-06-18 | 南宁艾德机械工程有限公司 | Adjustable movable load hollow feeding spindle structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150729 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |