CN204523778U - A kind of short stress rolling mill pull bar labyrinth gland - Google Patents
A kind of short stress rolling mill pull bar labyrinth gland Download PDFInfo
- Publication number
- CN204523778U CN204523778U CN201520190502.5U CN201520190502U CN204523778U CN 204523778 U CN204523778 U CN 204523778U CN 201520190502 U CN201520190502 U CN 201520190502U CN 204523778 U CN204523778 U CN 204523778U
- Authority
- CN
- China
- Prior art keywords
- labyrinth
- pull bar
- gland
- dust cap
- quiet
- 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.)
- Active
Links
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a kind of short stress rolling mill pull bar labyrinth gland.Comprise dynamic labyrinth and quiet labyrinth, dynamic labyrinth is offered through hole and is sleeved on by this through hole draws on 1, quiet labyrinth offers through hole and is sleeved on pull bar by this through hole, dynamic labyrinth is arranged on the top in quiet labyrinth, the end head of the top and bottom in quiet labyrinth is respectively arranged with the flange of protrusion, and the lower surface sealing in quiet labyrinth is fixed on bearing block; Dynamic labyrinth comprises dust cap and gland B, gland B is fixedly installed on the end face bottom dust cap, dust cap offers the through hole be set with pull bar, this through hole and tie-rod sealing, end face bottom dust cap offers groove, this groove and gland B form cavity, and the flange portion of upper end, quiet labyrinth is arranged on this inside cavity.This device can effectively waterproof, anti-oxidation slag, extends milling train service time on a production line, extends the time between overhauls(TBO) at movement pull bar assembling position, effectively reduce the labour intensity of overhaul of the equipments work.
Description
Technical field
The utility model relates to a kind of short stress rolling mill pull bar labyrinth gland.
Background technology
Short stress rolling mill is the key equipment on Bar Wire Product production line, short stress rolling mill because rigidity is high, compact conformation, easy to adjust, movement can the advantage such as integral replacing be greatly favored by consumers.The movement of short stress rolling mill mainly assembles three parts by screwdown gear, pull bar assembling and roller system and forms.In the process that Bar Wire Product hot rolling is produced, the temperature control of roll rolipass design, guide and guard cooling, rolled piece all needs cooling water, the movement of the short stress rolling mill water that is cooled surrounds, and therefore the pull bar of pull bar fit on has become an outstanding problem with the waterproof of bearing block faying face, anti-oxidation slag.
As shown in Figures 2 and 3, the major function of pull bar assembling bears roll-force and the adjustment for mill roll-gap.In process of production, operating mode is severe, add that adjusting frequency of mill roll-gap is lower, if dust ring place can not effectively guard against water and oxidizing slag, easily cause the easy ponding in inner chamber position and the oxidizing slag of end cap as depicted in figs. 1 and 2, milling train uses a period of time to there will be pull bar and the stuck phenomenon of copper nut, thus causes the roll gap of milling train to adjust.Therefore the pull bar of short stress rolling mill has become an outstanding problem with the waterproof of bearing block faying face, anti-oxidation slag.
Seal form of the prior art: the first as shown in Figure 4, because the pull bar of short stress rolling mill and bearing block faying face place only have a dust ring for waterproof and anti-oxidation slag, so sealing effectiveness is very poor.Outside dust ring is exposed to again, under the operating mode effect that high temperature on rolling line, cooling water, oxidizing slag etc. are severe, the easy ageing failure of dust ring, once water enters into the inner chamber position of the end cap shown in Fig. 2 or Fig. 3, then water can by the lubricating grease emulsification of inside, because the intrusion lacking lubrication and oxidizing slag easily causes pull bar to get rusty the phenomenon stuck with copper nut.If there is stuck phenomenon, the adjustment of the roll gap of milling train just cannot be carried out, and at this moment just needs to stop the production of rolling line, is changed by the movement of the milling train of fault, is disassembled, cleans by overhaul of the equipments work, grease-addedly to reinstall.Pull bar has become hidden trouble of equipment maximum on production line with the sealing problem at bearing block place, also makes the workload of overhaul of the equipments work be multiplied simultaneously.
The second as shown in Figure 5, compare the first, the second is disposed with spacer ring and O-ring seals A below dust ring, gland A is provided with above dust ring, gland A bolt is fixed, this structure has certain improvement for waterproof and dustproof, but causes the sealing effectiveness of Fig. 5 to be had a greatly reduced quality due to the error problem in actual production process and assemble.In actual production process, due to the tie rod hole on bearing block and the symmetry of the dead eye of relative milling train; The uniformity of milling train four back-up block location dimensions; Milling train moves a series of size form and position tolerances such as the uniformity of small footprint fit dimension and is difficult to ensure, so cannot ensure after having assembled that the tie rod hole on pull bar and bearing block is completely concentric, even there is certain inclination in pull bar local, the decrement that so just there will be the O-ring seals A side that pull bar fills is large, the situation that the decrement of opposite side is little, if pressure moment sharply increases when deliberately going the decrement increasing O-ring seals A to there will be again roll gap regulation.Facts have proved that the hermetically-sealed construction of Fig. 5 also there will be often into water, enter the situation of oxidizing slag.
Due to the improvement of rolling mill practice, in order to improve the utilization rate of roll and reduce energy consumption, domestic a lot of steel mill all adopts grooveless rolling now, groove rolling of comparing makes originally thick, middle milling train core on-line time bring up to a wheat harvesting period from one week, virtually original maintenance period of equipment is added 3 times.This makes that the inner chamber position of end cap intakes, the problem of slag input becomes abnormal outstanding, just needs normal half a year strip inspection pull bar to assemble, and on the production line had now, milling train movement to roll off the production line and all will disintegrate once every month, works and become very busy between roll change.In order to improve the rate of reaching the standard grade of equipment, the maintenance period of extension device, make pull bar and bearing block faying face waterproof, anti-oxidation slag, reducing the labour intensity of overhaul of the equipments work, is technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is the shortcoming for sealing device in prior art, a kind of short stress rolling mill pull bar labyrinth gland is provided, this apparatus structure form adopts the principle of labyrinth seal, effectively can make the waterproof of pull bar and bearing block faying face, anti-oxidation slag.
The utility model solves by the following technical programs:
A kind of short stress rolling mill pull bar labyrinth gland, comprise dynamic labyrinth and quiet labyrinth, described dynamic labyrinth offers through hole and is sleeved on by this through hole and pull on, quiet labyrinth offers through hole and is sleeved on pull bar by this through hole, dynamic labyrinth is arranged on the top in quiet labyrinth, the end head of the top and bottom in described quiet labyrinth is respectively arranged with the flange of protrusion, and the lower surface sealing in quiet labyrinth is fixed on bearing block; Described dynamic labyrinth comprises dust cap and gland B, gland B is fixedly installed on the end face bottom dust cap, dust cap offers the through hole be set with pull bar, seal between this through hole and pull bar, end face bottom dust cap offers groove, this groove and gland B form cavity, and the flange portion of described upper end, quiet labyrinth is arranged on this inside cavity.
Described quiet labyrinth is cylindric, the flange arranged respectively of the end head of the top and bottom in quiet labyrinth is for circular, this flange is coaxial with quiet labyrinth, and be provided with O-ring seals B between the face that the lower surface in quiet labyrinth contacts with bearing block, quiet labyrinth is bolted on bearing block.
Described dust cap material selection copper, dust cap is circular, the through hole for being set with pull bar is offered in the center of dust cap, this through hole and pull bar are matched in clearance, O-ring seals A is provided with between this through hole inside and pull bar, the groove that dust cap bottom end face is offered is for circular, and this groove is coaxial with dust cap.
Described gland B is annular, gland B is coaxially fixedly mounted on the bottom end face of dust cap by screw, the internal diameter of gland B is less than the diameter of the groove that dust cap bottom end face is offered, and the internal diameter of gland B is less than the external diameter of the flange of the end head setting of the upper end in quiet labyrinth.
Radially gap is had between the groove that the round flange that the end head of the upper end in described quiet labyrinth is arranged and dust cap bottom end face are offered.
The thickness of the flange that the end head of the upper end in described quiet labyrinth is arranged is less than the height of the groove that the end face bottom dust cap is offered.
Be provided with dust ring between described pull bar and bearing block, dust ring is arranged on the below in quiet labyrinth, and the below of dust ring is provided with O-ring seals A.
The utility model has following beneficial effect:
Dust cap on dynamic labyrinth of the present utility model and pull bar can wipe the dirt of pull bar deposited on silicon off effectively by less matched in clearance; Dynamic labyrinth can be rotated together along with pull bar, but can not move up and down along with pull bar due to the assembling between quiet labyrinth, this structure can solve in process and assemble process exists problem that is eccentric or scale error between pull bar and bearing saddle bore, also do not affect sealing effectiveness, can effectively waterproof, anti-oxidation slag by the utility model, extend milling train service time on a production line, extend the time between overhauls(TBO) at movement pull bar assembling position, effectively reduce the labour intensity of overhaul of the equipments work.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of pull rod seal device of the present utility model;
Fig. 2 is the structure diagram of the movement of short stress rolling mill in prior art;
Fig. 3 is the partial enlarged drawing schematic diagram in the pull bar assembling A portion, position of the movement of short stress rolling mill in prior art;
Fig. 4 is the structure principle chart of the first pull rod seal device in prior art;
Fig. 5 is the structure principle chart of the second pull rod seal device in prior art.
Wherein, 1 is pull bar; 2 is dust ring; 3 is copper nut; 4 is end cap; 5 is bearing block; 6 is spacer ring; 7 is O RunddichtringO A; 8 is gland A; 9 is dust cap; 10 is quiet labyrinth; 11 is gland B; 12 is O RunddichtringO B.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
See Fig. 1, the utility model comprises dynamic labyrinth and quiet labyrinth 10, and dynamic labyrinth offers through hole and is sleeved on pull bar 1 by this through hole, quiet labyrinth 10 offers through hole and is sleeved on pull bar 1 by this through hole, dynamic labyrinth is arranged on the top in quiet labyrinth 10.
Quiet labyrinth 10 is cylindric, the end head of top and bottom is respectively arranged with the flange of protrusion, flange is circular and coaxial with quiet labyrinth 10, O-ring seals B 12 is provided with between the face that the lower surface in quiet labyrinth 10 contacts with bearing block 5, the flange that quiet labyrinth 10 is arranged by the end head of lower end and bearing block 5 are fixed with bolt, and bolt hole is opened in the outside of O-ring seals B 12, therefore this structure can between the face that contact with bearing block 5 from the lower surface in quiet labyrinth 10 such as anti-sealing and oxidizing slag access to plant inner.
Dynamic labyrinth comprises dust cap 9 and gland B 11, and gland B 11 is annular, and gland B 11 is coaxially fixedly mounted on the bottom end face of dust cap 9 by screw.Dust cap 9 is circular, material selection copper, the through hole for being set with pull bar 1 is offered in the center of dust cap 9, it is matched in clearance between this through hole and pull bar 1, this gap is small―gap suture, like this when adjusting roll gap, dust cap 9 wipes oxidizing slag and some other deposit dirt of attachment on pull bar 1 off relative to the upper end being conducive to dust cap 9 in pull bar 1 relative movement thereof.Be provided with O-ring seals A 7 between the through hole inside that dust cap 9 is offered and pull bar 1 is set with and pull bar 1, this O-ring seals A 7 can play the effect of first waterproof.
End face bottom dust cap 9 offers groove, and this groove is circular and coaxial with dust cap 9; The internal diameter of gland B 11 is less than the diameter of this groove and is less than the diameter of flange of upper end, quiet labyrinth 10, gland B 11 becomes cavity with this groove type, the thickness of the flange of the end head setting of the upper end in quiet labyrinth 10 is less than the height of the groove that the bottom end face of dust cap 9 is offered, radially have certain gap between the groove that the round flange that the end head of the upper end in quiet labyrinth 10 is arranged and dust cap 9 bottom end face are offered, thus the flange portion of upper end, quiet labyrinth 10 is arranged on this inside cavity.
Above structure constitutes labyrinth of the present utility model form: first, dynamic labyrinth can relative to quiet labyrinth 10 relative to rotating neatly, but be merely able to have very short-range movement along pull bar direction, this distance is only the difference of the groove height that the thickness of the flange of the upper surface in quiet labyrinth and dust cap 9 bottom end face are offered, because quiet labyrinth is fixed on bearing block 5, so when pull bar 1 rotates adjustment roll gap, dynamic labyrinth can be rotated along with pull bar 1, but still remain on and relatively-stationary position, quiet labyrinth 10, thus ensure that adjustment roll gap time whole device sealing, secondly, certain gap is radially had, even if so there is eccentric or scale error between pull bar 1 and bearing block 5 hole also sealing effectiveness can not be had influence in process and assemble process between the groove that the round flange that the end head of the upper end in quiet labyrinth 10 is arranged and dust cap 9 bottom end face are offered, again, the height increasing quiet labyrinth 10 in actual use as far as possible can avoid flying the inside cavity that the cooling water of sword and oxidizing slag etc. enter pull bar assembling effectively.
Dust ring 2 is provided with between pull bar 1 and bearing block 5, dust ring 2 is arranged on the below in quiet labyrinth 10, the below of dust ring 2 is also provided with O shape sealing O-ring seals A 7 and encloses A 7, the benefit of this structure is, the molecule that dust cap 9 could not be wiped off can be stopped by dust ring 2, O-ring seals A 7 can block a small amount of water that dust cap 9 does not block further, plays the effect of second waterproof, therefore substantially increases the sealing effectiveness of pull bar assembling.
According to facts have proved that sealing device well solves the sealing problem of pull bar assembling, extending milling train service time on a production line, extending the time between overhauls(TBO) at movement pull bar assembling position, effectively reducing the labour intensity of overhaul of the equipments work.
Claims (7)
1. a short stress rolling mill pull bar labyrinth gland, it is characterized in that, comprise dynamic labyrinth and quiet labyrinth (10), described dynamic labyrinth offers through hole and is sleeved on pull bar (1) by this through hole, quiet labyrinth (10) offers through hole and is sleeved on pull bar (1) by this through hole, dynamic labyrinth is arranged on the top of quiet labyrinth (10), the end head of the top and bottom in described quiet labyrinth (10) is respectively arranged with the flange of protrusion, and the lower surface sealing of quiet labyrinth (10) is fixed on bearing block (5); Described dynamic labyrinth comprises dust cap (9) and gland B (11), gland B (11) is fixedly installed on the end face of dust cap (9) bottom, dust cap (9) offers the through hole be set with pull bar (1), seal between this through hole and pull bar (1), the end face of dust cap (9) bottom offers groove, this groove and gland B (11) form cavity, and the flange portion of described quiet labyrinth (10) upper end is arranged on this inside cavity.
2. a kind of short stress rolling mill pull bar labyrinth gland according to claim 1, it is characterized in that, described quiet labyrinth (10) is cylindric, the flange arranged respectively of the end head of the top and bottom in quiet labyrinth (10) is for circular, this flange is coaxial with quiet labyrinth (10), be provided with O-ring seals B (12) between the face that the lower surface in quiet labyrinth (10) contacts with bearing block (5), quiet labyrinth (10) are bolted on bearing block (5).
3. a kind of short stress rolling mill pull bar labyrinth gland according to claim 1, it is characterized in that, described dust cap (9) material selection copper, dust cap (9) is circular, the through hole for being set with pull bar (1) is offered in the center of dust cap (9), this through hole and pull bar (1) are matched in clearance, O-ring seals A (7) is provided with between this through hole inside and pull bar (1), the groove that the bottom end face of dust cap (9) is offered is for circular, and this groove is coaxial with dust cap (9).
4. a kind of short stress rolling mill pull bar labyrinth gland according to claim 1,2 or 3, it is characterized in that, described gland B (11) is annular, gland B (11) is coaxially fixedly mounted on by screw on the bottom end face of dust cap (9), the internal diameter of gland B (11) is less than the diameter of the groove that dust cap (9) bottom end face is offered, and the internal diameter of gland B (11) is less than the external diameter of the flange of the end head setting of the upper end in quiet labyrinth (10).
5. a kind of short stress rolling mill pull bar labyrinth gland according to claim 1,2 or 3, it is characterized in that radially having gap between the groove that the round flange that the end head of the upper end in described quiet labyrinth (10) is arranged and dust cap (9) bottom end face are offered.
6. a kind of short stress rolling mill pull bar labyrinth gland according to claim 1,2 or 3, it is characterized in that, the thickness of the flange of the end head setting of the upper end in described quiet labyrinth (10) is less than the height of the groove that the bottom end face of dust cap (9) is offered.
7. a kind of short stress rolling mill pull bar labyrinth gland according to claim 1, it is characterized in that, dust ring (2) is provided with between described pull bar (1) and bearing block (5), dust ring (2) is arranged on the below of quiet labyrinth (10), and the below of dust ring (2) is provided with O-ring seals A (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190502.5U CN204523778U (en) | 2015-03-31 | 2015-03-31 | A kind of short stress rolling mill pull bar labyrinth gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190502.5U CN204523778U (en) | 2015-03-31 | 2015-03-31 | A kind of short stress rolling mill pull bar labyrinth gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204523778U true CN204523778U (en) | 2015-08-05 |
Family
ID=53737832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520190502.5U Active CN204523778U (en) | 2015-03-31 | 2015-03-31 | A kind of short stress rolling mill pull bar labyrinth gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204523778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990002A (en) * | 2017-12-25 | 2018-05-04 | 中钢集团西安重机有限公司 | A kind of short stress rolling mill pull rod from scale removal sealing device |
| CN110883099A (en) * | 2019-12-11 | 2020-03-17 | 广东冠邦科技有限公司 | Sealing system and planetary rolling mill |
-
2015
- 2015-03-31 CN CN201520190502.5U patent/CN204523778U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990002A (en) * | 2017-12-25 | 2018-05-04 | 中钢集团西安重机有限公司 | A kind of short stress rolling mill pull rod from scale removal sealing device |
| CN110883099A (en) * | 2019-12-11 | 2020-03-17 | 广东冠邦科技有限公司 | Sealing system and planetary rolling mill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204523778U (en) | A kind of short stress rolling mill pull bar labyrinth gland | |
| CN103909093A (en) | Six-roller mill with small roller diameters and rolling control method | |
| CN100363121C (en) | Universal space self-potential stiff mill | |
| CN101428299B (en) | Short stress path molding mill | |
| CN110153339A (en) | A kind of double rotary shaft suspension arm formula skew rolling mills | |
| CN201500680U (en) | Sealing device of pre-finishing mill roller box | |
| CN201871531U (en) | Flux-cored wire former rolling frame | |
| CN103920715A (en) | Dual-supporting device applicable to small-roller-diameter six-roller mill | |
| CN201940423U (en) | Roll bearing seat assembly | |
| CN110238198A (en) | A kind of flat vertical shared mill train of independent driving | |
| CN202461124U (en) | Roll-separating mechanism | |
| CN203817052U (en) | Rolling mill bearing device | |
| CN205110362U (en) | Rolling mill screw -down device's connection joint | |
| CN203991693U (en) | Integrated rolling guide wheel bearing assembly for steel rolling | |
| CN103920712A (en) | Axial locking device | |
| CN210789153U (en) | 2+8 roller combined type thick plate blank large-reduction casting and rolling machine aerial fog cooling device | |
| CN203409688U (en) | Quick dismantling tool for hydraulic cylinder end cover | |
| CN201366433Y (en) | Axial locating device of rolling mill | |
| CN204234461U (en) | A kind of edger roll of energy cancellation band steel surface point line defect | |
| CN201644729U (en) | Narrow edge width-adjusting device for electromechanical crystallizer | |
| CN201103583Y (en) | Lug oil cylinder | |
| CN202667263U (en) | Improved wear-preventing structure for roll gap adjusting device | |
| CN202070565U (en) | Encoder mounting rack of hot-rolling mill screwdown device | |
| CN204182688U (en) | Edger roll axial-adjustment unit | |
| CN204769886U (en) | Vice no clearance adjustment device of double thread |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |