CN211175228U - Special-shaped sealing ring for oil seal chain - Google Patents
Special-shaped sealing ring for oil seal chain Download PDFInfo
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- CN211175228U CN211175228U CN201921497859.2U CN201921497859U CN211175228U CN 211175228 U CN211175228 U CN 211175228U CN 201921497859 U CN201921497859 U CN 201921497859U CN 211175228 U CN211175228 U CN 211175228U
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Abstract
The utility model belongs to the technical field of it is sealed, especially, relate to an oil blanket is special-shaped seal circle for chain. The utility model discloses a all have two oil seal groove structures for the W type on the global of sealing washer, when two W type structures in inboard and outside receive the oppression, have higher resistance to compression and bounce, can make the sealing washer keep sufficient face pressure and magnitude of interference, the inner ring diameter that the sealing washer second arch formed is greater than fifth bellied inner ring diameter and the inner ring diameter of first arch simultaneously, the upset phenomenon of prior art can not appear, the highest height in the outside of sealing washer is higher than the most high height of the most inboard of sealing washer, make the face pressure of the contact surface of sealing washer with sleeve, link joint reduce step by step, thereby prevent the local wear of sealing washer, prevent that lubricating oil from revealing, guarantee the whole wear resistance of chain; and the side of the sealing ring is W-shaped, so that the sealing ring is small in contact area when contacting other parts, the friction force is reduced, and the wear resistance is further improved.
Description
Technical Field
The utility model belongs to the technical field of it is sealed, especially, relate to an oil blanket is special-shaped seal circle for chain.
Background
In general, as shown in fig. 1, in the assembly process of the oil-sealed chain, the sealing rings are installed at the matching parts of the inner link plate 91, the outer link plate 92 and the sleeve 93, and have the functions of preventing moisture and dust from entering from the gap between the pin 94 and the sleeve 93 and preventing grease filled in the gap between the pin 94 and the sleeve 93 from overflowing.
The conventional oil seal chain sealing ring uses a sealing ring with an O or X-shaped section, the sealing ring is flatly placed at the matching part of the inner chain plate 91, the outer chain plate 92 and the sleeve 93, and surface pressure is applied along the height direction of the pin shaft 94.
However, the use of the O-ring seal described above has the following disadvantages: firstly, the effective area of contact with the link joint increases after O type sealing washer compression deformation, and the result frictional force increases, and wear-resisting effect is not good enough. The use of the above-described X-ring seal has the following disadvantages: firstly, the contact part of the sealing ring, the chain plate and the sleeve is uniformly stressed and cannot bear alternating stress, the oil sealing effect is not ideal, and as a result, lubricating grease is easy to leak from the sealing ring, so that the service life of the sealing ring is shortened; secondly, the X-shaped sealing ring is easy to turn over in the assembling process, the effective contact area of the sealing ring is reduced, and the service life of the sealing ring is further shortened; thirdly, the X-shaped sealing ring has low compression resistance, low abrasion resistance and short service life.
SUMMERY OF THE UTILITY MODEL
According to the not enough of above prior art, the utility model provides an oil blanket is special-shaped seal circle for chain, its upset problem that can effectively solve X type sealing washer pressure equipment in-process has prevented the local wear of sealing washer, prevents that lubricating oil from revealing, has guaranteed the whole wear resistance of chain.
The utility model provides a technical scheme that technical problem adopted does: the periphery of the longitudinal section of the sealing ring is provided with bulges, namely a first bulge positioned at the top of an inner ring of the sealing ring, a second bulge positioned at the bottom of the inner ring of the sealing ring, a third bulge positioned at the top of an outer ring of the sealing ring and a fourth bulge positioned at the bottom of the outer ring of the sealing ring, wherein a fifth bulge is arranged between the first bulge and the second bulge;
the inner side surfaces of the first protrusion, the fifth protrusion and the second protrusion are in side standing W shapes with inward openings, the top surfaces of the first protrusion, the sixth protrusion and the third protrusion are in W shapes, the outer side surfaces of the third protrusion, the seventh protrusion and the fourth protrusion are in side standing W shapes with outward openings, the bottom surfaces of the fourth protrusion, the eighth protrusion and the second protrusion are in inverted W shapes with downward openings, and each W shape forms two oil sealing grooves with outward openings;
the inner diameter of an inner ring formed by the first bulge is recorded as d1The inner diameter of an inner ring formed by the fifth bulge is recorded as d2The inner diameter of an inner ring formed by the second protrusion is d3Then d is3＞d2＝d1；
The maximum distance between the third bulge and the fourth bulge along the central axis direction of the sealing ring is recorded as h1The maximum distance between the sixth bulge and the eighth bulge along the central axis direction of the sealing ring is recorded as h2The maximum distance between the first bulge and the second bulge along the central axis direction of the sealing ring is recorded as h3Then h is1＞h2＝h3；
Further, circular arc transition is formed between the first protrusion and the fifth protrusion and between the fifth protrusion and the second protrusion.
Further, the first protrusion and the fifth protrusion, and the fifth protrusion and the second protrusion are in acute angle or obtuse angle transition.
Further, the outermost end portions of the first protrusion, the second protrusion, the third protrusion, the fourth protrusion, the fifth protrusion, the sixth protrusion, the seventh protrusion and the eighth protrusion are all arc-shaped.
Furthermore, the sixth bulge and the eighth bulge are vertically symmetrical with the horizontal center plane of the sealing ring, and the third bulge and the fourth bulge are vertically symmetrical with the horizontal center plane of the sealing ring.
Further, the maximum distance h1、h2、h3Is h1＝1.3h2＝1.3h3。
Furthermore, the sealing ring is made of hydrogenated nitrile rubber or fluororubber.
The utility model discloses following beneficial effect has: the sealing ring of the utility model has a W-shaped structure with double oil sealing grooves on the four peripheral surfaces, thereby realizing double oil sealing effect, realizing oil mass complementation in the grooves, preventing lubricating grease from leaking and prolonging the service life of the chain; (2) when the two W-shaped structures at the inner side and the outer side of the utility model are pressed, the sealing ring has higher compression resistance and rebound elasticity, and can keep sufficient surface pressure and magnitude of interference, so that the sealing ring is in close contact with the chain plate constantly to prevent lubricating grease from losing, and the wear resistance of the sealing ring is improved; (3) the diameter of the inner ring formed by the second bulge of the sealing ring is simultaneously larger than that of the inner ring of the first bulge of the diameter of the inner ring of the fifth bulge, so that when the second bulge is firstly in contact with and mounted on the sleeve, the overturning phenomenon in the prior art can not occur, and the working efficiency is improved; (4) the utility model discloses a maximum distance relation h of sealing washer1＞h2＝h3The highest height of the outermost side of the sealing ring is higher than the highest height of the innermost side of the sealing ring, so that the surface pressure of the contact surface of the sealing ring with the sleeve and the chain plate is reduced step by step, the local abrasion of the sealing ring is prevented, the leakage of lubricating oil is prevented, and the integral abrasion resistance of the chain is ensured; (5) and the side of the sealing ring is W-shaped, so that the sealing ring is small in contact area when contacting other parts, the friction force is reduced, and the wear resistance is further improved.
Drawings
FIG. 1 is a schematic diagram of a prior art oil-sealed chain structure;
FIG. 2 is a schematic longitudinal sectional view of an embodiment of the present invention in an unstressed state;
fig. 3 is a schematic structural view of the assembled sleeve according to the embodiment of the present invention;
FIG. 4 is a schematic view of the working condition of the chain assembled in the embodiment of the present invention;
in the figure: 100. the sealing ring comprises a sealing ring 1, a first bulge 2, a second bulge 3, a third bulge 4, a fourth bulge 5, a fifth bulge 6, a sixth bulge 7, a seventh bulge 8, an eighth bulge 91, an inner chain plate 92, an outer chain plate 93, a sleeve 94 and a pin shaft.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 4, the utility model discloses a special-shaped sealing ring for oil seal chain, the sealing ring be located the same position with the sealing ring of prior art, all set up as the arch around the longitudinal section of sealing ring 100, be respectively for the first arch 1 that is located the top of sealing ring 100 inner circle, the second arch 2 that is located the bottom of sealing ring 100 inner circle, the third arch 3 that is located the top of sealing ring 100 outer circle and the fourth arch 4 that is located the bottom of sealing ring outer circle, be provided with fifth arch 5 between first arch 1 and the second arch 2, be provided with sixth arch 6 between first arch 1 and the third arch 3, be provided with seventh arch 7 between third arch 3 and the fourth arch 4, be provided with eighth arch 8 between fourth arch 4 and the second arch 2;
the inner side surfaces formed by the first protrusion 1, the fifth protrusion 5 and the second protrusion 2 are of side standing W shapes with inward openings, the top surfaces formed by the first protrusion 1, the sixth protrusion 5 and the third protrusion 3 are of W shapes, the outer side surfaces of the third protrusion 3, the seventh protrusion 7 and the fourth protrusion 4 are of side standing W shapes with outward openings, the bottom surfaces of the fourth protrusion 4, the eighth protrusion 8 and the second protrusion 2 are of inverted W shapes with downward openings, and each W shape forms two oil sealing grooves with outward openings;
let the inner diameter of the inner ring formed by the first protrusion 1 be d1The inner diameter of the inner ring formed by the fifth bulge 5 is recorded as d2The inner diameter of the inner ring formed by the second protrusions 2 is recorded as d3Then d is3＞d2＝d1；
Let the maximum distance between the third protrusion 3 and the fourth protrusion 4 along the central axis of the seal ring 100 be h1Let the maximum distance between the sixth protrusion 6 and the eighth protrusion 8 along the central axis of the seal ring 100 be h2Let the maximum distance between the first protrusion 1 and the second protrusion 2 along the central axis of the seal ring 100 be h3Then h is1＞h2＝h3(ii) a When the sealing rings 100 are installed on the pin 94, two ends of the pin 94 correspond to one sealing ring, and the first protrusions 1 of the two sealing rings are located at a position close to the end of the pin 94 where the first protrusions are located.
The utility model solves the disadvantages of the conventional O-shaped and X-shaped rings, the end surface of the sealing ring 100 is an annular body around the central axis, and the four sides are W-shaped, thereby realizing the oil quantity complementation of the oil grooves by adopting the oil sealing design idea of double oil grooves, namely when one oil sealing groove has oil loss, the other V-shaped oil groove still seals oil and continuously provides lubrication for the sealing ring 100, preventing the leakage of lubricating grease and prolonging the service life of the chain;
because the ring internal diameter that second arch 2 formed is greater than the ring internal diameter that fifth arch 5 formed, also be greater than the ring internal diameter that first arch 1 formed, so after second arch 2 contacted the sleeve earlier for first arch 1, can effectively solve sealing washer 100 upset problem, sealing washer 100 and inside and outside link joint and telescopic contact surface keep good restoring force all the time, thereby prevent dust, sand and soil to get into chain sealing washer 100, chain sealing washer 100 is in contact with the inner link joint, outside link joint, sleeve intersection position and not the atress oppression state, the all around face of cross section is W type all the time, and is the ring body around the round pin axle axis.
The outermost height of the seal ring 100 is higher than the innermost height, i.e., h1＞h2＝h3Therefore, the surface pressure of the contact surface of the sealing ring 100 and the chain plate is gradually reduced from outside to inside, so that the abrasion of the sealing ring 100 is gradually reduced and finally reaches a balanced state, the leakage of lubricating grease is prevented, and the service life of the chain is prolonged.
The utility model discloses a sealing washer for oil blanket chain, when inside and outside both sides W type cross-section is compressed, has high compressive resistance and resilience, can make sealing washer 100 keep sufficient face pressure and magnitude of interference, makes sealing washer 100 and link joint in close contact with prevent that lubricating grease runs off often, promotes sealing washer 100's wearability.
The material of the sealing ring 100 may be hydrogenated nitrile rubber.
The inboard of sealing washer 100 and sleeve contact is the W type, when the medial surface was compressed, has high compressive resistance and bounce, keeps the sealing washer to possess good oil sealing effect all the time, and the effective area of contact of link joint and sealing washer 100 reduces, and the frictional resistance of sealing washer 100 and link joint diminishes, promotes the sealing washer resistance to wears to promote the whole life of chain.
Further, arc transitions are formed between the first protrusion 1 and the fifth protrusion 5, and between the fifth protrusion 5 and the second protrusion 2.
Further, the first protrusion 1 and the fifth protrusion 5, and the fifth protrusion 5 and the second protrusion 2 are all in acute or obtuse angle transition.
Further, the outermost end parts of the first protrusion 1, the second protrusion 2, the third protrusion 3, the fourth protrusion 4, the fifth protrusion 5, the sixth protrusion 6, the seventh protrusion 7 and the eighth protrusion 8 are all arc-shaped.
Furthermore, the sixth protrusion 6 and the eighth protrusion 8 are vertically symmetrical with respect to the horizontal center plane of the sealing ring 100, and the third protrusion 3 and the fourth protrusion 4 are vertically symmetrical with respect to the horizontal center plane of the sealing ring 100.
Further, the maximum distance h1、h2、h3Is h1＝1.3h2＝1.3h3。
As shown in fig. 4, when the seal ring 100 is sleeved on the sleeve, the seal ring 100 deforms under the action of the inner and outer chain plates, and the action of the force is that the mutual seal ring simultaneously exerts a reaction force on the inner and outer chain plates; when the sealing ring 100 deforms, acting force acts on the outermost end of the sealing ring, acts on the middle end (namely the sixth bulge 6 and the eighth bulge 8) of the sealing ring 100 gradually along with abrasion of the sealing ring 100, and then acts on the innermost end of the sealing ring, and stress is gradually reduced from outside to inside, so that oil sealing performance of the chain is improved. The double-deck oil blanket effect that the W type has, 2X type sealing washer effect structures are simplified in other words, can realize sealing the oil mass complementation in the oil recess, have sufficient lubricating grease in the oil recess all the time, slow down oil blanket wearing and tearing effectively and improve whole life-span, compare under the same wearing and tearing condition with ordinary X type circle, this sealing washer wear resistance is 5 times of ordinary X circle.
The above is the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that the contents of the specification and the drawings are used for conversion, or directly or indirectly applied to other related technical fields, all the same principles are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides an oil blanket is special-shaped sealing washer for chain which characterized in that: the periphery of the longitudinal section of the sealing ring is provided with bulges, namely a first bulge positioned at the top of the inner ring of the sealing ring, a second bulge positioned at the bottom of the inner ring of the sealing ring, a third bulge positioned at the top of the outer ring of the sealing ring and a fourth bulge positioned at the bottom of the outer ring of the sealing ring, wherein a fifth bulge is arranged between the first bulge and the second bulge, a sixth bulge is arranged between the first bulge and the third bulge, a seventh bulge is arranged between the third bulge and the fourth bulge, and an eighth bulge is arranged between the fourth bulge and the second bulge;
the inner side surfaces of the first protrusion, the fifth protrusion and the second protrusion are in side standing W shapes with inward openings, the top surfaces of the first protrusion, the sixth protrusion and the third protrusion are in W shapes, the outer side surfaces of the third protrusion, the seventh protrusion and the fourth protrusion are in side standing W shapes with outward openings, the bottom surfaces of the fourth protrusion, the eighth protrusion and the second protrusion are in inverted W shapes with downward openings, and each W shape forms two oil sealing grooves with outward openings;
the inner diameter of an inner ring formed by the first bulge is recorded as d1The inner diameter of an inner ring formed by the fifth bulge is recorded as d2The inner diameter of an inner ring formed by the second protrusion is d3Then d is3＞d2＝d1；
The maximum distance between the third bulge and the fourth bulge along the central axis direction of the sealing ring is recorded as h1The maximum distance between the sixth bulge and the eighth bulge along the central axis direction of the sealing ring is recorded as h2The maximum distance between the first bulge and the second bulge along the central axis direction of the sealing ring is recorded as h3Then h is1＞h2＝h3。
2. The profiled sealing ring for an oil seal chain according to claim 1, characterized in that: and arc transition is formed between the first bulge and the fifth bulge and between the fifth bulge and the second bulge.
3. The profiled sealing ring for an oil seal chain according to claim 1, characterized in that: and acute angle or obtuse angle transition is formed between the first protrusion and the fifth protrusion and between the fifth protrusion and the second protrusion.
4. The profiled sealing ring for an oil seal chain according to claim 1, characterized in that: the outermost end parts of the first bulge, the second bulge, the third bulge, the fourth bulge, the fifth bulge, the sixth bulge, the seventh bulge and the eighth bulge are all arc-shaped.
5. The profiled sealing ring for an oil seal chain according to claim 1, characterized in that: the sixth bulge and the eighth bulge are vertically symmetrical with the horizontal central plane of the sealing ring, and the third bulge and the fourth bulge are vertically symmetrical with the horizontal central plane of the sealing ring.
6. The oil seal chain mold according to claim 1The shape sealing washer, its characterized in that: maximum distance h1、h2、h3Is h1＝1.3h2＝1.3h3。
7. The profiled sealing ring for an oil seal chain according to claim 1, characterized in that: the sealing ring is made of hydrogenated nitrile rubber or fluororubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921497859.2U CN211175228U (en) | 2019-09-10 | 2019-09-10 | Special-shaped sealing ring for oil seal chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921497859.2U CN211175228U (en) | 2019-09-10 | 2019-09-10 | Special-shaped sealing ring for oil seal chain |
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| Publication Number | Publication Date |
|---|---|
| CN211175228U true CN211175228U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921497859.2U Active CN211175228U (en) | 2019-09-10 | 2019-09-10 | Special-shaped sealing ring for oil seal chain |
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| CN (1) | CN211175228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469633A (en) * | 2019-09-10 | 2019-11-19 | 青岛征和链传动有限公司 | A kind of oil-sealed chain special-shaped seal ring |
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2019
- 2019-09-10 CN CN201921497859.2U patent/CN211175228U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469633A (en) * | 2019-09-10 | 2019-11-19 | 青岛征和链传动有限公司 | A kind of oil-sealed chain special-shaped seal ring |
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