CN201843991U - Upper roller hydraulic cylinder seal structure of straightener - Google Patents
Upper roller hydraulic cylinder seal structure of straightener Download PDFInfo
- Publication number
- CN201843991U CN201843991U CN2010205822207U CN201020582220U CN201843991U CN 201843991 U CN201843991 U CN 201843991U CN 2010205822207 U CN2010205822207 U CN 2010205822207U CN 201020582220 U CN201020582220 U CN 201020582220U CN 201843991 U CN201843991 U CN 201843991U
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- Prior art keywords
- ring
- piston
- piston ring
- piston rod
- cover plate
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- Expired - Lifetime
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Abstract
The utility model relates to an upper roller hydraulic cylinder seal structure of a straightener, which is used for straightening subsequent finished bars and comprises a piston ring (1) and a piston rod (6). The upper roller hydraulic cylinder seal structure is characterized in that the piston ring (1) and the piston rod (6) are connected in threaded manner, threaded connection portions of the piston ring (1) and the piston rod (6) are locked by the aid of four fastening pins (5), a cover plate (8) is disposed on the outer side of the threaded connection portion of the piston ring (1) with the piston rod (6), the cover plate (8) and the piston ring (1) are fixed together via a bolt (3), a seal ring I (2) is embedded onto the joint position of the inner end face of the piston ring (1) with the piston rod (6), a seal ring II (7) is embedded onto the inner ring of the cover plate (8), and a seal ring III (9) is embedded onto the joint position of the inner end face of the cover plate (8) with the piston ring (1). Oil leakage of the hydraulic cylinder piston ring is avoided, future equipment maintenance is convenient, and overhaul time is reduced while overhaul efficiency is increased.
Description
Technical field
The utility model relates to a kind of two-roll straightening machine equipment, especially relates to a kind of straightening machine top roll hydraulic cylinder sealing structure.Be mainly used in the aligning of follow-up finishing bar.Belong to technical field of metallurgical equipment.
Background technique
Two-roll straightening machine equipment is mainly used in the aligning of follow-up finishing bar.The mainly aligning work of carrying out steel of rolling reduction and the relative angle by upper and lower two straightening rollers of straightening machine main frame, lower roll is fixed, top roll can carry out the lift adjustment height by hydraulic system, and in the aligning process, set straightening force, and absorb mechanical shock by hydraulic system by setting pressure.Through using, find that upper straightening roll produces spring gradually in the aligning process, and along with the big spring of change of aligning steel diameter is also increasing, and find that lifting hydraulic cylinder has oil leakage phenomenon.By to this equipment upper straightening roll strip inspection, find in lifting jar, to have a large amount of metal peeling things.On inspection, the metal peeling thing is the weld metal that piston ring and piston rod weld drop.
Trouble analysis: straightening machine top roll hydraulic cylinder sealing structure as shown in Figure 1 in the past.This structure comprises piston ring and piston rod, and piston ring and piston rod junction point adopt and be welded to connect.Because the aligning impact force that produces in the aligning process, causes piston ring and piston rod weld cracking to the effect of piston ring, leakage of oil before and after the piston ring finally causes straightening force to descend and produces bounce.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of hydraulic cylinder piston ring not have the straightening machine top roll hydraulic cylinder sealing structure that oil leakage phenomenon takes place.
The purpose of this utility model is achieved in that a kind of straightening machine top roll hydraulic cylinder sealing structure, comprise piston ring and piston rod, adopt between described piston ring and the piston rod and be threaded, with four tightening pins piston ring and piston rod thread joint are locked again, and at described piston ring and piston rod thread joint arranged outside one cover plate, cover plate is fixed with bolt and piston ring, and set a seal ring I at piston ring interior edge face and piston rod junction point, set a seal ring II at the cover plate inner ring, set a seal ring III at cover plate interior edge face and piston ring junction point.
The beneficial effects of the utility model are:
The utility model hydraulic cylinder piston ring does not have oil leakage phenomenon to be taken place, and is convenient to the maintenance of equipment from now on, reduces the repair time and improves overhaul efficiency.
Description of drawings
Fig. 1 is straightening machine top roll hydraulic cylinder sealing structural representation in the past.
Fig. 2 is the utility model straightening machine top roll hydraulic cylinder sealing structural representation.
Reference character among the figure:
Piston ring 1, seal ring I 2, bolt 3, tightening pin 5, piston rod 6, seal ring II 7, cover plate 8, seal ring III 9, pressure oil pipe 10, weld 11.
Embodiment
Referring to Fig. 2, Fig. 2 is the utility model straightening machine top roll hydraulic cylinder sealing structural representation.As seen from Figure 2, the utility model straightening machine top roll hydraulic cylinder sealing structure comprises piston ring 1 and piston rod 6, adopts between piston ring 1 and the piston rod 6 to be threaded, with four tightening pins 5 piston ring 1 and piston rod 6 threaded connection places are locked again, prevent that piston ring from rotating; And at described piston ring 1 and piston rod 6 threaded connection place arranged outside one cover plate 8, cover plate 8 usefulness bolts 3 are fixing with piston ring 1, play fixedly tightening pin, and the purpose that can regulate the height of cover plate; And set a seal ring I 2 at piston ring 1 interior edge face and piston rod 6 junction points, set a seal ring II 7 at cover plate 8 inner rings, set a seal ring III 9 at cover plate 8 interior edge faces and piston ring 1 junction point, the possibility of leakage of oil improves the equipment operation reliability when impacting to reduce.
Claims (1)
1. straightening machine top roll hydraulic cylinder sealing structure, comprise piston ring (1) and piston rod (6), it is characterized in that: adopt between described piston ring (1) and the piston rod (6) to be threaded, use four tightening pins (5) with piston ring (1) and the locking of piston rod (6) threaded connection place again, and at described piston ring (1) and piston rod (6) threaded connection place arranged outside one cover plate (8), cover plate (8) is fixing with bolt (3) and piston ring (1), and set a seal ring I (2) at piston ring (1) interior edge face and piston rod (6) junction point, set a seal ring II (7) at cover plate (8) inner ring, set a seal ring III (9) at cover plate (8) interior edge face and piston ring (1) junction point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205822207U CN201843991U (en) | 2010-10-29 | 2010-10-29 | Upper roller hydraulic cylinder seal structure of straightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205822207U CN201843991U (en) | 2010-10-29 | 2010-10-29 | Upper roller hydraulic cylinder seal structure of straightener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843991U true CN201843991U (en) | 2011-05-25 |
Family
ID=44038883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205822207U Expired - Lifetime CN201843991U (en) | 2010-10-29 | 2010-10-29 | Upper roller hydraulic cylinder seal structure of straightener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158449A (en) * | 2018-09-27 | 2019-01-08 | 天津市中重科技工程有限公司 | Gantry straightener roller cover locking pull rod screw tightens anti-loose structure |
-
2010
- 2010-10-29 CN CN2010205822207U patent/CN201843991U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158449A (en) * | 2018-09-27 | 2019-01-08 | 天津市中重科技工程有限公司 | Gantry straightener roller cover locking pull rod screw tightens anti-loose structure |
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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: 20110525 |