CN203500344U - Two-way helical spring for opening oil seal - Google Patents
Two-way helical spring for opening oil seal Download PDFInfo
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- CN203500344U CN203500344U CN201320594106.XU CN201320594106U CN203500344U CN 203500344 U CN203500344 U CN 203500344U CN 201320594106 U CN201320594106 U CN 201320594106U CN 203500344 U CN203500344 U CN 203500344U
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- spring
- helical spring
- sealing
- oil
- helical
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Abstract
Disclosed is a two-way helical spring for an opening oil seal. The spring is a linear helical spring comprising connected left and right segments. The left and right segment helical springs have the same outer diameter, the same helical pitch, the same length and opposite helical directions. The spring is used as a frame to make an opening oil seal, thereby facilitating oil seal replacement of large-scale machinery. When the spring is assembled, a sealing specific pressure generated by radial shrinkage deformation generated by a 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 a kind of oil sealing cutting edge ring lock ring helical spring, particularly a kind of open oil cutting edge ring lock ring helical spring.
Background technique
Oil sealing is for rotation axis seal.Oil sealing is the rubber product of ring, oil sealing has ring bottom part ring, in bottom part ring, there is 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, because cutting edge ring has sealing " interference ", sealing " interference " can produce seal pressure, guarantee 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 taking off oil sealing with said method easily compared with small mechanical equipment, the oil sealing more renewing.For heavy mechanical equipment, pinnacled heavy mechanical equipment particularly, takes being connected of running shaft and other heavy mechanical equipment 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 be quite difficulty.
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 metal frame 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 metal frame 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 metal frame, 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, do not have can make to be trapped among on running shaft to become the open oil after annulus to produce the helical spring 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 open oil bidirectional screw spring that becomes the open oil generation sealing " interference " after annulus on running shaft that can make to be trapped among.
The utility model is realized with the following method.
Open oil is straight line helical spring with bidirectional screw spring, straight line helical spring has left and right two sections of connected helical springs, left and right two sections of helical spring external diameters are identical with pitch, left and right two sections helical spring equal in length, left and right two sections of helical spring Hand of spiral are contrary.
When the method with sulfuration is made open oil, using the utility model as skeleton, be placed in the rubber body of open oil cutting edge ring, allow the two ends of bidirectional screw spring at the opening two ends of open oil, during sulfuration, 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 open oil inner circumference is less than the circumference of the running shaft excircle that will seal, and allows this size official post cutting edge ring have certain sealing " interference ".
The utility model need to coordinate bidirectional screw joint to use.Left and right two sections of connected short helical springs that bidirectional screw joint has is equal in length, Hand of spiral is contrary, left and right two sections short helical spring pitch are identical with the pitch of bidirectional screw spring, left and right two sections short helical spring male helicoid match with the inner helical surface of the left and right helical spring spiral of bidirectional screw spring, in bidirectional screw joint, be connected with short cylindrical core, on short cylindrical core, have radial hole.
When heavy mechanical equipment is changed oil sealing, take the open oil that the utility model is skeleton, be trapped among on the running shaft being coordinated, the circumference of the cutting edge ring inner circumference of open oil 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 metal frame 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.
With the utility model, as carcasing open oil, make heavy mechanical equipment change oil sealing convenient.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 be propose according to scheme of the invention of the present utility model a kind of curve circular open oil with the master of bidirectional screw spring depending on innings cuing open schematic diagram;
Fig. 2 is the II place enlarged diagram of Fig. 1;
Fig. 3 is that the master of open oil while connecting into annulus with bidirectional screw spring with bidirectional screw joint cuts open schematic diagram depending on office;
Fig. 4 is the I place enlarged diagram of Fig. 3;
The master of the open oil that Fig. 5 is is carcasing with the utility model cuts open schematic diagram depending on office;
Fig. 6 is that schematic diagram cuts open in the office of overlooking of Fig. 5.
Embodiment
In Fig. 1 ~ Fig. 4, open oil is straight line helical spring with bidirectional screw spring, straight line helical spring has left and right two sections of connected helical springs 1,2, left and right two sections of helical spring external diameters are identical with pitch, left and right two sections helical spring equal in length, left and right two sections of helical spring Hand of spiral are contrary.
The utility model need to coordinate bidirectional screw joint to use.Bidirectional screw joint can connect into ring the utility model.
In Fig. 1 ~ Fig. 4, left and right two sections of connected helical springs 4,5 that bidirectional screw joint 3 has is equal in length, Hand of spiral is contrary, left and right two sections of helical spring pitch match with the pitch of bidirectional screw spring inner spiral hole, in bidirectional screw joint, be connected with short cylindrical core 6, on short cylindrical core, have radial hole 7.
In Fig. 5, Fig. 6, in the cutting edge ring 9 of open oil 8, there are bidirectional screw spring 10 skeletons.
Claims (1)
1. an open oil bidirectional screw spring, it is straight line helical spring, it is characterized in that: straight line helical spring has left and right two sections of connected helical springs, left and right two sections of helical spring external diameters are identical with pitch, left and right two sections helical spring equal in length, left and right two sections of helical spring Hand of spiral are contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594106.XU CN203500344U (en) | 2013-09-26 | 2013-09-26 | Two-way helical spring for opening oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594106.XU CN203500344U (en) | 2013-09-26 | 2013-09-26 | Two-way helical spring for opening oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500344U true CN203500344U (en) | 2014-03-26 |
Family
ID=50331324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320594106.XU Expired - Fee Related CN203500344U (en) | 2013-09-26 | 2013-09-26 | Two-way helical spring for opening oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559362A (en) * | 2017-08-09 | 2018-01-09 | 安徽红桥金属制造有限公司 | A kind of oil seal spring part for being easy to assembling |
-
2013
- 2013-09-26 CN CN201320594106.XU patent/CN203500344U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559362A (en) * | 2017-08-09 | 2018-01-09 | 安徽红桥金属制造有限公司 | A kind of oil seal spring part for being easy to assembling |
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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 |
Granted publication date: 20140326 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |