CN208845467U - A kind of support roller side pressure oil cylinder for four-high mill - Google Patents
A kind of support roller side pressure oil cylinder for four-high mill Download PDFInfo
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- CN208845467U CN208845467U CN201821363221.5U CN201821363221U CN208845467U CN 208845467 U CN208845467 U CN 208845467U CN 201821363221 U CN201821363221 U CN 201821363221U CN 208845467 U CN208845467 U CN 208845467U
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- piston
- movable lug
- oil cylinder
- pressure oil
- side pressure
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Abstract
A kind of support roller side pressure oil cylinder for four-high mill, including cylinder body and piston, the tailpiece of the piston rod of piston are equipped with activity tongue hole, and activity tongue hole is blind hole, are equipped with movable lug in activity tongue hole, movable lug both ends are respectively provided with spherical surface, elastic connection between movable lug and activity tongue hole.The utility model piston tailpiece of the piston rod setting can opposing pistons resilient movement movable lug, movable lug and supporting roller bearing case are sphere-contact.Above-mentioned improvement can be with cushioning supportive roller bearing case to the impact force of piston, and the spherical design of movable lug can reduce the dragging generated when supporting roller bearing case return to piston, to substantially reduce damage of the supporting roller bearing case to compressing cylinder is surveyed.The utility model is also provided with reset spring in cylinder body and piston space, eliminates piston nonrecoverable drawback when side pressure oil cylinder occurs altering pressure phenomenon.
Description
Technical field
The utility model relates to a kind of components for four-high mill, especially for the support roller side pressure oil of four-high mill
Cylinder.
Background technique
Metallurgical hot-rolled steel mm finishing mill unit using more generally four-high mill, four-high mill have two support rollers up and down and
Upper and lower two working rolls, in order to keep as-rolled condition more stable, the center line of support roller is not overlapped with the center line of working roll,
That is: two support roller center lines are overlapped with milling train center line, and double-working center line is deviated to milling train export direction.Support roller and work
Make roller other than being subjected to normal roll-force, the thrust also each by the horizontal direction of other side, support roller pushes away working roll
To milling train export direction, working roll pushes support roller to roll Way in.Although this is to direction opposite effect power size
It is equal, but working roll is easy for being pushed to the export direction of rolling, and support roller is but difficult to be pushed to the Way in of milling train,
The reason is that support roller is while pushing inlet of rolling mill direction to by working roll, support roller by the roll-force from working roll but
It is biased to the export direction of milling train, therefore, the roll-force that working roll is transmitted to support roller forces supporting roller bearing case askew to export direction
Tiltedly, therefore the stability of support roller is had a greatly reduced quality.In consideration of it, being added in the outlet mill stand contacted with supporting roller bearing case
Support roller side pressure oil cylinder.When rolling, the rodless cavity of oil cylinder is full of pressure oil, and cylinder piston rod stretches out, and pistons end withstands branch
It supports on the right side of roller bearing case, supporting roller bearing case and support roller is pushed to the Way in of milling train.There is support roller side pressure oil cylinder, rolls
The stability of system has large increase, but two new problems occurs again simultaneously, 1, working roll in the moment for stinging steel, due to rolling
Power is uprushed, and working roll can be flared out suddenly together with support roller, is referred to as " to bounce " in the industry, and spring makes supporting roller bearing case up and down
Frictional force between side pressure oil cylinder piston club head pulls piston rod to spring direction, when this block steel rolling finishes, up and down
Supporting roller bearing case returns to original position, is repeated over a thousand times the above movement daily, side pressure oil cylinder occurred quickly by repeat impact oil leak,
Alter pressure phenomenon；2, when pressure phenomenon occurs altering in side pressure oil cylinder, rodless cavity and the rod chamber of oil cylinder are altered logical, need piston to retract, have
When rod cavity oil inlet, since rodless cavity area is greater than rod chamber area, piston is still protruding, even opens oil circuit piston also very
Hardly possible retracts, and eventually leading to support roller cannot normally extract out and influence roll change operation, if extracted out by force, because of supporting roller bearing case
There is vertical dry sump outside liner plate, more serious consequence certainly will be will cause.The presence of the above problem leads to some four-high mills
Support roller side pressure oil cylinder is removed or deactivated.
Utility model content
The purpose of this utility model is that aiming at the disadvantages of the prior art, impact force can be reduced and can make piston by providing one kind
The support roller side pressure oil cylinder for four-high mill of self-return.
Problem described in the utility model is realized with following technical proposals:
A kind of support roller side pressure oil cylinder for four-high mill, including cylinder body and piston, the tailpiece of the piston rod of piston are equipped with
Activity tongue hole, activity tongue hole are blind hole, are equipped with movable lug in activity tongue hole, movable lug both ends are respectively provided with spherical surface, and elasticity connects between movable lug and activity tongue hole
It connects.
The above-mentioned support roller side pressure oil cylinder for four-high mill is equipped with ring spring slot, annular elastomeric at the piston big end shaft shoulder
Reset spring is equipped in spring slot.
The above-mentioned support roller side pressure oil cylinder for four-high mill, the movable lug are mushroom, and the outboard end of movable lug leans out work
Outside tongue apertures, the hollow locknut being threadedly coupled with it is equipped at the mouth of activity tongue hole, hollow locknut presses movable lug outboard end.
The above-mentioned support roller side pressure oil cylinder for four-high mill, is equipped with spring retainer platform in the middle part of the movable lug, in activity tongue hole
Equipped with buffer spring, buffer spring both ends press the bottom hole of spring retainer platform and activity tongue hole respectively.
The above-mentioned support roller side pressure oil cylinder for four-high mill, movable lug outboard end are that outer end spherical surface is smoothly connected outer end circular cone
Face, hollow locknut are to match the locknut internal conical surface being bonded with outer end circular conical surface with the contact surface of outer end circular conical surface.
The above-mentioned support roller side pressure oil cylinder for four-high mill: the outer end face of hollow locknut is equipped with locknut slot.
For solving, support roller side pressure oil cylinder is hit power to the utility model and piston rod can not be received when pressure occurs altering in oil cylinder
The problem of returning is improved, piston tailpiece of the piston rod setting can opposing pistons resilient movement movable lug, movable lug and support roller
Bearing housing is sphere-contact.Above-mentioned improvement can be with cushioning supportive roller bearing case to the impact force of piston, and the spherical design of movable lug can
To reduce the dragging generated when the spring of supporting roller bearing case and return to piston, survey is pressed to substantially reduce supporting roller bearing case
The damage of oil cylinder.The utility model is also provided with reset spring in cylinder body and piston space, eliminates side pressure oil cylinder and occurs altering pressure now
As when the nonrecoverable drawback of piston.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of piston；
Fig. 3 is the structural schematic diagram of movable lug；
Fig. 4 is the structural schematic diagram of hollow locknut；
Fig. 5 is Fig. 4 left view；
Fig. 6 is the utility model installation site figure on four-high mill.
Each list of reference numerals in figure are as follows: 1, cylinder body, 2, piston, 2-1, spring groove, 2-2, activity tongue hole, 3, reset spring, 4,
Hollow locknut, 4-1, locknut internal conical surface, 4-2, locknut slot, 5, movable lug, 5-1, outer end spherical surface, 5-2, outer end circular conical surface, 5-3,
Spring retainer platform, 5-4, inner end spherical surface, 6, buffer spring, 7, supporting roller bearing case, 8, four-high mill.
Specific embodiment
Referring to Fig. 6, the utility model is mounted on the outlet side of four-high mill 8, the side of upper and lower two supporting roller bearing casees 7
Portion.
Referring to Fig. 1-Fig. 5, the utility model includes cylinder body 1 and piston 2, and the tailpiece of the piston rod of piston is equipped with activity tongue hole 2-2,
Activity tongue hole is blind hole, and movable lug 5 is equipped in activity tongue hole.The outboard end of movable lug is leant out outside activity tongue hole, touches supporting roller bearing case 7.
Movable lug is mushroom, and the outboard end of movable lug is that spherical surface 5-1 in outer end is smoothly connected outer end circular conical surface 5-2, and the inner end of movable lug is interior
Hold spherical surface 5-4.The hollow locknut 4 being threadedly coupled with it is equipped at the mouth of activity tongue hole.For the ease of locking or unclamping hollow locknut,
Locknut slot 4-2 is equipped on the outer end face of hollow locknut.Hollow locknut and activity tongue hole press the outer end circular cone in movable lug after screwing
On face, hollow locknut is to match the locknut internal conical surface 4-1 being bonded with outer end circular conical surface with the contact surface of movable lug outer end circular conical surface.
After hollow nut-locking, movable lug exposes piston rod end face 8-10mm, and movable lug can be pushed into 3-5mm to the right.It is set in the middle part of movable lug
There is spring retainer platform 5-3, is equipped with buffer spring 6 in activity tongue hole, buffer spring both ends press spring retainer platform and activity tongue hole respectively
Bottom hole.Above structure is not before side pressure oil cylinder works, and buffer spring active force is by the outer end circular conical surface of movable lug and locknut inner circle
The conical surface is bonded self-centering；Compressed simultaneously in buffer spring when side pressure oil cylinder extending action, movable lug moves inwardly into interior
Side spherical surface is contacted with activity tongue hole bottom, and circular conical surface is separated with circular conical surface on the inside of locknut on the outside of movable lug, since movable lug is spherical shape,
The spring of supporting roller bearing case will not constitute piston rod and damage.
Referring to Fig. 1, Fig. 2, it is equipped with ring spring slot 2-1 at the piston big end shaft shoulder, is equipped with reset spring in ring spring slot
3, the both ends of reset spring press the slot bottom and cylinder body of ring spring slot respectively.There is altering pressure now in side pressure oil cylinder in above structure
As and when piston being needed to retract, open oil circuit, under the power-assisted effect of reset spring, piston can be retracted smoothly.
Claims (6)
1. a kind of support roller side pressure oil cylinder for four-high mill, including cylinder body (1) and piston (2), it is characterised in that: piston
Tailpiece of the piston rod be equipped with activity tongue hole (2-2), activity tongue hole is blind hole, is equipped with movable lug (5) in activity tongue hole, movable lug both ends are all provided with Place
Face, elastic connection between movable lug and activity tongue hole.
2. the support roller side pressure oil cylinder according to claim 1 for four-high mill, it is characterised in that: the piston big end shaft shoulder
Place is equipped with ring spring slot (2-1), is equipped with reset spring (3) in ring spring slot.
3. the support roller side pressure oil cylinder according to claim 2 for four-high mill, it is characterised in that: the movable lug is mushroom
The outboard end of mushroom shape, movable lug is leant out outside activity tongue hole, and the hollow locknut (4) being threadedly coupled with it is equipped at the mouth of activity tongue hole, hollow
Locknut presses movable lug outboard end.
4. the support roller side pressure oil cylinder according to claim 3 for four-high mill, it is characterised in that: in the middle part of the movable lug
Equipped with spring retainer platform (5-3), be equipped with buffer spring (6) in activity tongue hole, buffer spring both ends press respectively spring retainer platform and
The bottom hole of activity tongue hole.
5. the support roller side pressure oil cylinder according to claim 4 for four-high mill, it is characterised in that: movable lug outboard end is
Outer end spherical surface (5-1) is smoothly connected outer end circular conical surface (5-2), and the contact surface of hollow locknut and outer end circular conical surface is and outer end circular cone
The locknut internal conical surface (4-1) of face matching fitting.
6. the support roller side pressure oil cylinder according to claim 5 for four-high mill, it is characterised in that: outside hollow locknut
End face is equipped with locknut slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821363221.5U CN208845467U (en) | 2018-08-23 | 2018-08-23 | A kind of support roller side pressure oil cylinder for four-high mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821363221.5U CN208845467U (en) | 2018-08-23 | 2018-08-23 | A kind of support roller side pressure oil cylinder for four-high mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845467U true CN208845467U (en) | 2019-05-10 |
Family
ID=66356152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821363221.5U Active CN208845467U (en) | 2018-08-23 | 2018-08-23 | A kind of support roller side pressure oil cylinder for four-high mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845467U (en) |
-
2018
- 2018-08-23 CN CN201821363221.5U patent/CN208845467U/en active Active
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