CN203500478U - Opening oil sealing with seal interference - Google Patents
Opening oil sealing with seal interference Download PDFInfo
- Publication number
- CN203500478U CN203500478U CN201320594039.1U CN201320594039U CN203500478U CN 203500478 U CN203500478 U CN 203500478U CN 201320594039 U CN201320594039 U CN 201320594039U CN 203500478 U CN203500478 U CN 203500478U
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- cutting edge
- edge ring
- ring
- sealing
- bidirectional screw
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Abstract
Disclosed is an opening oil sealing with seal interference. The oil sealing comprises an opening annular bottom ring. The bottom ring is internally provided with an opening annular frame having a rectangular cross section. The two ends of the frame are provided with a tenon and a groove that are cooperated with each other. In the inner circle of the bottom ring, an opening annular waist part is connected with an opening annular cutting edge ring. The inner circle of the opening annular cutting edge ring is provided with an opening annular sealing lip. An opening annular bidirectional helical spring frame is disposed in the cutting edge ring. The opening annular bidirectional helical spring frame comprises two portions having the same length and opposite helical directions. The inner circumference of the cutting edge ring is less than the circumference of a matching rotating shaft. A bidirectional helical joint that matches a helical hole inside the bidirectional helical spring frame is connected between the helical springs having opposite helical directions at two sides of the cutting edge ring opening. The bidirectional helical joint comprises two segments having the same length and opposite helical directions. A short cylinder core is internally connected with the bidirectional helical joint, and provided with a radial hole. In a using process of the oil sealing, a sealing specific pressure generated by deformation generated by the cutting edge ring is achieved, and a sealing specific pressure generated by sealing interference is achieved, so that good sealing performance is achieved.
Description
Technical field
The utility model relates to the helical spring of a kind of open oil, particularly a kind of open oil.
Background technique
In machinery, the running shaft of some equipment is to stretch out in transmission case or work box, and the running shaft stretching out is connected with other equipment, drives the parts that revolve of miscellaneous equipment to rotate.In order to prevent lubricant oil or the working solution leakage in transmission case or work box, also in order to prevent in the intrusion transmission cases such as extraneous silt, dust, aqueous vapor or work box, the oil sealing that has rotation axis seal to use between running shaft and transmission case.
Oil sealing is the rubber product of ring, oil sealing has the ring bottom part ring with ring skeleton, the inner circumference of bottom part ring is connected with ring cutting edge ring with the waist of ring, there is annular seal lip the inner side of cutting edge ring, there is ring spring groove in the outside of cutting edge ring, and spring groove is embedded with the ring helical spring ring that connects together and form with straight line helical spring two ends.
Oil seal product is under nature, the internal diameter of oil sealing cutting edge ring is less than the running shaft external diameter that will seal, it is the circumference that the circumference of oil sealing cutting edge ring inner circumference is less than running shaft, this size official post cutting edge ring has certain sealing " interference ", the internal diameter of helical spring ring is less than the groover rot diameter of spring groove, and helical spring can make cutting edge ring produce the distortion of radial contraction.
During use, oil sealing bottom is arranged on the oil sealing base of transmission case or work box side, on the running shaft that cutting edge ring set stretches out in transmission case or work box, seal lip is close on the circumferential surface of running shaft, because cutting edge ring has sealing " interference ", sealing " interference " can produce seal pressure, guarantees the sealing of oil sealing to running shaft, the distortion that helical spring ring can make cutting edge ring produce radial contraction, allows seal lip be attached to more tightly and on running shaft, is conducive to the sealing of oil sealing to running shaft.
Oil sealing is less, simple in structure, but greatly affects the usability of machinery.In machinery running, due to abrasion, the reason such as burn into is aging, the oil sealing of rubber material can lose efficacy or damage, once oil seal failure or damage and just need replacing in time, otherwise affect the use of machinery.
When changing oil sealing, take being connected of running shaft and other machinery apart, expose rotating shaft head, unload the oil sealing baffle ring on oil sealing base, take off oil sealing, then on rotating shaft head, be inserted in new oil sealing, new oil sealing is put into oil sealing base and oil sealing baffle ring is installed.
For the oil sealing that can more renew with said method easily compared with small mechanical equipment.For heavy mechanical equipment, particularly pinnacled heavy mechanical equipment, is quite difficult with said method replacing oil sealing.
In order to facilitate heavy mechanical equipment, change oil sealing, in prior art, a kind of " large-scale open oil " disclosed in Chinese patent ZL 2,012 2 0279985.2, large-scale open oil has one with the oil sealing main body consisting of fiber end and rubber ends of opening, in described fiber end, being provided with cross section is the Steel Skeleton of rectangle, described rubber ends is provided with spring, and in rubber ends and rotating shaft surface of contact, be formed with main lip and secondary lip, the Steel Skeleton port of described opening is formed with tenon and the groove of being convenient to connection matching.
While changing oil sealing with above-mentioned open oil, need not take being connected of running shaft and other heavy mechanical equipment apart, only need pull down door, shift out old, after disconnection, take off, put open oil, the tenon and the groove that with Steel Skeleton, between opening two ends, match connect into annulus, at opening, with tackiness agent, cement again, embed oil sealing and oil sealing baffle ring is installed.Open oil makes heavy mechanical equipment, and particularly pinnacled heavy mechanical equipment, changes oil sealing very convenient.
Above-mentioned large-scale open oil surrounds after annulus on running shaft, under nature, the internal diameter of open oil cutting edge ring can only be to equate with coordinated running shaft external diameter, the circumference that is open oil cutting edge ring inner circumference can not extend, can only equate with the circumference of coordinated running shaft, this open oil surrounds after annulus on running shaft, and cutting edge ring can not produce sealing " interference ", the seal pressure not producing because of sealing " interference ", sealability is bad.
If look on the bright side of things, oil seal cutting edge ring surrounds and can produce sealing " interference " after annulus and just need the circumference of open oil cutting edge ring inner circumference to be less than the circumference of coordinated running shaft on running shaft, when open oil is surrounded to annulus on running shaft, the circumference of cutting edge ring inner circumference is extended.
With straight line helical spring two ends, connecting together the internal diameter of the ring helical spring ring that forms can be less than the groover rot diameter of ring spring groove, the distortion that helical spring ring can make cutting edge ring produce radial contraction produces seal pressure, but can extend generation sealing " interference " after can not making open oil cutting edge ring surround annulus on running shaft, above-mentioned open oil can only be to produce seal pressure with cutting edge annular strain, and sealability is not very reliable.
In prior art, be not trapped among after becoming annulus on running shaft and can produce the open oil of sealing " interference ".
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, proposes a kind of being trapped among and on running shaft, becomes the open oil with sealing interference that can produce sealing " interference " after annulus.
The utility model is realized with the following method.
The open oil with sealing interference is open circles annular rubber products, oil sealing has open circles circular bottom part ring, in bottom part ring, having cross section is the open circles annular Steel Skeleton of rectangle, between Steel Skeleton opening two ends, there is tenon and the groove matching, the inner circumference of bottom part ring is connected with open circles annular cutting edge ring with open circles annular waist, the inner circumference of cutting edge ring has open circles ring packing lip, in cutting edge ring, there is open circles annular bidirectional screw spring skeleton, bidirectional screw spring skeleton has equal in length, the left side that Hand of spiral is contrary, right two sections of connected helical springs, the circumference of cutting edge ring inner circumference is less than the circumference of coordinated running shaft, between the contrary helical spring of cutting edge ring opening both sides Hand of spiral, be connected with bidirectional screw joint, bidirectional screw joint has equal in length, the left side that Hand of spiral is contrary, right two sections of connected short helical springs, left, right two sections short helical spring pitch are identical with the pitch of bidirectional screw spring, left, a left side for right two sections short helical spring male helicoid and bidirectional screw spring, the inner helical surface of right-hand screw spring spiral matches, in bidirectional screw joint, be connected with short cylindrical core, on short cylindrical core, there is radial hole.
During use, the two ends of bidirectional screw joint are injected respectively in the bidirectional screw spring skeleton inner spiral hole of the utility model cutting edge ring opening both sides, by needle tool, inject the rotation of the radial hole in cylindrical core bidirectional screw joint in bidirectional screw joint, in the bidirectional screw spring skeleton inner spiral hole of bidirectional screw joint energy precession cutting edge ring opening both sides, trip ring is linked to be to annulus.
Bidirectional screw spring of the present utility model is the open circles annular bidirectional screw spring skeleton in cutting edge ring circumferential rubber body, during product sulfuration, allow the two ends of bidirectional screw spring on the opening two ends of open oil, sizing material can flow in the spiral hole of bidirectional screw spring skeleton, and sizing material and spiral spring frame are connected as a single entity.The open oil product of making is under nature, and the circumference of cutting edge ring inner circumference is less than the circumference of coordinated running shaft, allows this size official post cutting edge ring have certain sealing " interference ".
When heavy mechanical equipment is changed oil sealing, the utility model is trapped among on coordinated running shaft, the circumference of the utility model open circles annular cutting edge ring inner circumference is less than the circumference of coordinated running shaft, at annulus opening, there is certain circumferential gap, the two ends of bidirectional screw joint are injected respectively in the inner spiral hole of opening both sides, by needle tool, inject the rotation of the radial hole in cylindrical core bidirectional screw joint in bidirectional screw joint, be equivalent to screw rod rotates in nut, the gap of annulus opening is diminished gradually, the power that generation is extended bidirectional screw spring skeleton, because sizing material and spiral spring frame are connected as a single entity, the elongation of bidirectional screw spring skeleton can drive open circles annular cutting edge ring to extend, the gap of relief annulus opening is zero, annulus opening is completely integrated, simultaneously, together with the tenon matching between Steel Skeleton opening two ends links with groove engagement, trip ring is linked to be to annulus, trip ring is linked to be after annulus, produce sealing interference, bidirectional screw spring skeleton also can make cutting edge ring produce the distortion of radial contraction.
It is convenient that the utility model makes heavy mechanical equipment change oil sealing.After installation, existing cutting edge ring produces the seal pressure of the distortion generation of radial contraction, also has the seal pressure producing because of sealing interference, good seal performance.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is that a kind of master with the open oil of sealing interference who proposes according to scheme of the invention of the present utility model cuts open schematic diagram depending on office;
Fig. 2 is that schematic diagram cuts open in the office of overlooking of Fig. 1;
Fig. 3 is that the master that open circles annular bidirectional screw spring skeleton is merged into after annulus cuts open schematic diagram depending on office;
Fig. 4 is the I place enlarged diagram of Fig. 3;
Fig. 5 is that the master of open circles annular bidirectional screw spring skeleton when opening cuts open schematic diagram depending on office;
Fig. 6 is the II place enlarged diagram of Fig. 5.
Embodiment
In Fig. 1 ~ Fig. 6, the open oil with sealing interference is opening 1 annular rubber goods 2, oil sealing has open circles circular bottom part ring 3, in bottom part ring, having cross section is the open circles annular Steel Skeleton 4 of rectangle, between Steel Skeleton opening two ends, there are the tenon 5 and the groove 6 that match, the inner circumference of bottom part ring is connected with open circles annular cutting edge ring 8 with open circles annular waist 7, the inner circumference of cutting edge ring has open circles ring packing lip 9, in cutting edge ring, there is open circles annular bidirectional screw spring skeleton 10, bidirectional screw spring skeleton has equal in length, the left side that Hand of spiral is contrary, right two sections of connected helical springs 11, 12, the circumference of cutting edge ring inner circumference is less than the circumference of coordinated running shaft, between the contrary helical spring of cutting edge ring opening both sides Hand of spiral, be connected with bidirectional screw joint 13, bidirectional screw joint has equal in length, the left side that Hand of spiral is contrary, right two sections of connected short helical springs 14, 15, left, right two sections short helical spring pitch are identical with the pitch of bidirectional screw spring, left, a left side for right two sections short helical spring male helicoid and bidirectional screw spring, the inner helical surface of right-hand screw spring spiral matches, in bidirectional screw joint, be connected with short cylindrical core 16, on short cylindrical core, there is radial hole 17.
In above-mentioned bottom part ring, only having cross section is the open circles annular Steel Skeleton of rectangle, and the rigidity of bottom part ring is not very large.In order to increase the rigidity of bottom part ring, cross section of the present utility model is that the open circles annular Steel Skeleton of rectangle can be compounded with folder cloth skeleton.
In Fig. 2, cross section is that the open circles annular Steel Skeleton of rectangle is compounded with folder cloth skeleton 18.
Claims (2)
1. one kind has the open oil that seals interference, it is open circles annular rubber products, oil sealing has open circles circular bottom part ring, in bottom part ring, having cross section is the open circles annular Steel Skeleton of rectangle, between Steel Skeleton opening two ends, there is tenon and the groove matching, the inner circumference of bottom part ring is connected with open circles annular cutting edge ring with open circles annular waist, the inner circumference of cutting edge ring has open circles ring packing lip, it is characterized in that: in cutting edge ring, have open circles annular bidirectional screw spring skeleton, bidirectional screw spring skeleton has equal in length, the left side that Hand of spiral is contrary, right two sections of connected helical springs, the circumference of cutting edge ring inner circumference is less than the circumference of coordinated running shaft, between the contrary helical spring of cutting edge ring opening both sides Hand of spiral, be connected with bidirectional screw joint, bidirectional screw joint has equal in length, the left side that Hand of spiral is contrary, right two sections of connected short helical springs, left, right two sections short helical spring pitch are identical with the pitch of bidirectional screw spring, left, a left side for right two sections short helical spring male helicoid and bidirectional screw spring, the inner helical surface of right-hand screw spring spiral matches, in bidirectional screw joint, be connected with short cylindrical core, on short cylindrical core, there is radial hole.
2. by the open oil with sealing interference claimed in claim 1, it is characterized in that: described cross section is that the open circles annular Steel Skeleton of rectangle is compounded with folder cloth skeleton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594039.1U CN203500478U (en) | 2013-09-26 | 2013-09-26 | Opening oil sealing with seal interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594039.1U CN203500478U (en) | 2013-09-26 | 2013-09-26 | Opening oil sealing with seal interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500478U true CN203500478U (en) | 2014-03-26 |
Family
ID=50331458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320594039.1U Expired - Fee Related CN203500478U (en) | 2013-09-26 | 2013-09-26 | Opening oil sealing with seal interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470769A (en) * | 2013-09-26 | 2013-12-25 | 铁岭助驰橡胶密封制品有限公司 | Open oil seal with seal interference |
-
2013
- 2013-09-26 CN CN201320594039.1U patent/CN203500478U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470769A (en) * | 2013-09-26 | 2013-12-25 | 铁岭助驰橡胶密封制品有限公司 | Open oil seal with seal interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20170926 |