CN104315009A - Sealing assembly for universal joint for crossed shaft type universal shaft coupler - Google Patents
Sealing assembly for universal joint for crossed shaft type universal shaft coupler Download PDFInfo
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- CN104315009A CN104315009A CN201410517934.2A CN201410517934A CN104315009A CN 104315009 A CN104315009 A CN 104315009A CN 201410517934 A CN201410517934 A CN 201410517934A CN 104315009 A CN104315009 A CN 104315009A
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- sealing
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Abstract
The invention discloses a sealing assembly for a universal joint for a crossed shaft type universal shaft coupler. The sealing assembly comprises a sealing element and a sealing seat, wherein the outer side of the sealing element is provided with a main sealing lip and a sub sealing lip which are inclined relative to the sealing element, the two sealing lips are respectively inclined in a direction towards the end part of the opening end of a bearing sleeve, the main sealing lip forms an angle being 40 degrees to 50 degrees with the axial direction of the sealing element, the sub sealing lip forms an angle being 25 degrees to 30 degrees with the axial direction of the sealing element, a U-shaped cavity is formed between the main sealing lip and the sub sealing lip, the thickness of the main sealing lip is 0.8 to 1.5mm, the thickness of the sub sealing lip is 80 percent of the thickness of the main sealing lip, the outer side of the sealing seat is provided with an annular groove, the depth of the annular groove is 4 to 4.5mm, the pre-tightening quantity being 0.1 to 0.2mm is realized between the width of the annular groove and the width of the sealing element, and the sealing element is arranged on the sealing seat through the annular groove formed in the sealing seat. The sealing assembly has the advantages that the sufficient lubrication of a sealing lip part can be realized, the abrasion can be reduced, and the in-site construction condition of the universal joint can be met.
Description
Technical field
The invention belongs to coupling technical field, particularly relate to a kind of universal coupling with spider universal joint black box.
Background technique
Universal coupling with spider is a kind of the most frequently used coupling, utilizes the feature of its structure can make comparatively not large at same axis or axis knuckle or move axially larger diaxon isogonism speed continuous rotary, and reliably transmitting torque and motion.At present, transmitting torque in the mechanical axis system of metallurgy, lifting, engineering transportation, mine, oil, boats and ships, coal, rubber, papermaking equipment and other Heavy duty maching industry has been widely used in.
Traditional universal coupling with spider, its universal joint comprises cross axle, the axle journal of cross axle is provided with needle bearing, needle bearing comprises bearing housing and needle roller, the axle journal of cross axle is arranged in bearing housing by needle roller, in order to prevent dust from entering between cross axle and bearing housing, inner grease is excessive, affects the normal use of universal joint, between the axle journal and bearing housing of cross axle, is provided with Sealing.In existing sealing means, have plenty of by two O-ring seals, have plenty of by arranging seal ring at the axle sleeve internal surface of universal joint bearing and arranging a dust-blocking ring at sleeve outer surface, many with upper type number of components, loaded down with trivial details during assembling, sealing effect is not good.
The Sealing generally adopted at present is be provided with the seal of skeleton or non-skeleton seal, and seal internal diameter is provided with multiple lip, and multiple lip contacts with the axle journal of cross axle.Because the lip on above-mentioned seal is towards needle bearing inner ring, in working procedure, lubricating grease gets rid of to bearing housing under centrifugal action, inner ring lip position lacks lubrication, frictional force increases, due to rubbing action, seal temperature raises, inner ring lip position heat shrinkable, frictional force is larger, causes the vicious circle of lip position.
Summary of the invention
For solving the problem, the object of this invention is to provide that a kind of structure is simple, the universal coupling with spider universal joint black box of good sealing effect.
For achieving the above object, the present invention adopts following technological scheme:
A kind of universal coupling with spider universal joint black box, it comprises Sealing and sealing seat, the primary seal lip that Sealing arranged outside has opposing seal to tilt, secondary seal lip, two seal lips all tilt towards the direction of cage openings end end, primary seal lip is near cage openings end end, secondary seal lip is positioned at the marginal position of Sealing, primary seal lip and Sealing are axially in the angle of 40 ° ~ 50 °, secondary seal lip and Sealing are axially in the angle of 25 ° ~ 30 °, U-shaped cavity is formed between primary seal lip and secondary seal lip, the thickness of primary seal lip is 0.8 ~ 1.5mm, the thickness of secondary seal lip is 80% of primary seal lip thickness, offer circular groove outside sealing seat, annular groove depth is 4 ~ 4.5mm, and width and seal width have the pretension amount of 0.1 ~ 0.2 mm, and Sealing is arranged on sealing seat by the circular groove on sealing seat.
Described universal coupling with spider universal joint black box, the pretension amount of the primary seal lip of its Sealing, secondary seal lip and bearing housing is 0.5 ~ 1.0mm.
Described universal coupling with spider universal joint black box, its Sealing is made up of urethane rubber.
Described universal coupling with spider universal joint black box, its sealing seat is made up of engineering plastics.
Owing to adopting technological scheme as above, the present invention has following superiority:
This universal coupling with spider universal joint black box, its structure is simple, separating making, combinationally use, manufacture simple, low cost of manufacture, easy to assembly, by in Sealing arranged outside primary seal lip, secondary seal lip, make lubricating grease in the needle bearing of universal joint be attached to seal lip position at universal joint rotation process by centrifugal force, realize sealed lip sufficient lubrication, reduce friction, reduce wear, extend black box working life, universal coupling with spider universal joint field working conditions can be met.
Accompanying drawing explanation
Fig. 1 is the structural representation of universal coupling with spider universal joint black box of the present invention;
Fig. 2 is the structural representation of Sealing;
Fig. 3 is the A portion structure for amplifying schematic diagram of Fig. 2;
Fig. 4 is the structural representation of the universal coupling with spider universal joint of the improved seal being equipped with Fig. 2;
In figure: 1-Sealing; 2-sealing seat; 3-primary seal lip; 4-U shape cavity; The secondary seal lip of 5-; 6-bearing housing; 7-needle roller; 8-cross axle.
Embodiment
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
As Fig. 1, 2, shown in 3, this universal coupling with spider universal joint black box, it comprises Sealing 1 and sealing seat 2, the primary seal lip 3 that Sealing arranged outside has opposing seal to tilt, secondary seal lip 5, two seal lips all tilt towards direction, Sealing left side, secondary seal lip is positioned at the marginal position of Sealing, primary seal lip and Sealing are axially in the angle of 40 ° ~ 50 °, secondary seal lip and Sealing are axially in the angle of 25 ° ~ 30 °, U-shaped cavity 4 is formed between primary seal lip and secondary seal lip, the thickness of primary seal lip is 0.8 ~ 1.5mm, the thickness of secondary seal lip is 80% of primary seal lip thickness, circular groove is offered outside sealing seat, annular groove depth is 4 ~ 4.5mm, and width and seal width have the pretension amount of 0.1 ~ 0.2 mm, and Sealing is arranged on sealing seat by the circular groove on sealing seat, guarantee that Sealing and sealing seat firmly combine, do not come off in assembling using process.
The pretension amount a of the primary seal lip of above-mentioned Sealing, secondary seal lip and bearing housing is the aperture that R in 0.5 ~ 1.0mm, Fig. 3 refers to bearing housing.
Above-mentioned Sealing is made up of urethane rubber, has very high mechanical strength, has good elasticity simultaneously, and oil resistance and wear resistance, in water resistance, comparatively conventional seals improves a lot especially.
Above-mentioned sealing seat is made up of engineering plastics, and engineering plastics are PE or PP or ABS or PU, and have quality light, toughness and moderate strength, do not corrode, the feature of low, the easy processing of price.
As shown in Figure 4, primary seal lip 3, secondary seal lip 5 all tilt towards the direction of bearing housing 6 opening end end, and namely two seal lip tilts towards the axle journal root direction of cross axle 8.
Above-mentioned universal coupling with spider universal joint improved seal, the primary seal lip 3 of its seal body, secondary seal lip 5 and the pretension amount a of bearing housing 6 are the aperture that R in 0.5 ~ 1.0mm, Fig. 3 refers to bearing housing.
The loading of Sealing is convenient in the setting at primary seal lip, secondary seal lip angle of inclination, and primary seal lip is thicker than the secondary seal lip of mouth, and intensity is large, and pretightening force is large, plays primary seal effect; Secondary seal lip thinner thickness, intensity is little, and pretightening force is little, and surface friction drag is little, and in the U-shaped cavity between primary seal lip and secondary seal lip, lubricating grease plays auxiliary seal effect under supporting; Primary seal lip, secondary seal lip mainly prevent outside water, iron rust, greasy dirt and other impurity from entering needle bearing inside, the inner lubricating grease after certain hour uses of needle bearing simultaneously, containing certain abrasion of particles thing or impurity, can to be leaked discharge by major and minor seal lip place with lubricating grease under fill cup hydraulic, ensure that in needle bearing, lubricating grease is upgraded.
Claims (4)
1. a universal coupling with spider universal joint black box, it is characterized in that: it comprises Sealing and sealing seat, the primary seal lip that Sealing arranged outside has opposing seal to tilt, secondary seal lip, two seal lips all tilt towards the direction of cage openings end end, primary seal lip is near cage openings end end, secondary seal lip is positioned at the marginal position of Sealing, primary seal lip and Sealing are axially in the angle of 40 ° ~ 50 °, secondary seal lip and Sealing are axially in the angle of 25 ° ~ 30 °, U-shaped cavity is formed between primary seal lip and secondary seal lip, the thickness of primary seal lip is 0.8 ~ 1.5mm, the thickness of secondary seal lip is 80% of primary seal lip thickness, offer circular groove outside sealing seat, annular groove depth is 4 ~ 4.5mm, and width and seal width have the pretension amount of 0.1 ~ 0.2 mm, and Sealing is arranged on sealing seat by the circular groove on sealing seat.
2. universal coupling with spider universal joint black box according to claim 1, is characterized in that: the pretension amount of the primary seal lip of its Sealing, secondary seal lip and bearing housing is 0.5 ~ 1.0mm.
3. universal coupling with spider universal joint black box according to claim 1, is characterized in that: its Sealing is made up of urethane rubber.
4. universal coupling with spider universal joint black box according to claim 1, is characterized in that: its sealing seat is made up of engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517934.2A CN104315009A (en) | 2014-09-30 | 2014-09-30 | Sealing assembly for universal joint for crossed shaft type universal shaft coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517934.2A CN104315009A (en) | 2014-09-30 | 2014-09-30 | Sealing assembly for universal joint for crossed shaft type universal shaft coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104315009A true CN104315009A (en) | 2015-01-28 |
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ID=52370290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410517934.2A Pending CN104315009A (en) | 2014-09-30 | 2014-09-30 | Sealing assembly for universal joint for crossed shaft type universal shaft coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061528A (en) * | 2017-03-23 | 2017-08-18 | 青岛科技大学 | The Non-centering CV joint that simply connected vibration shock isolation is hit |
-
2014
- 2014-09-30 CN CN201410517934.2A patent/CN104315009A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061528A (en) * | 2017-03-23 | 2017-08-18 | 青岛科技大学 | The Non-centering CV joint that simply connected vibration shock isolation is hit |
| CN107061528B (en) * | 2017-03-23 | 2023-10-10 | 青岛科技大学 | Single-connection vibration-damping impact-resistant non-centering constant-angular-speed universal joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |
|
| WD01 | Invention patent application deemed withdrawn after publication |