WO2018207316A1 - シール構造 - Google Patents
シール構造 Download PDFInfo
- Publication number
- WO2018207316A1 WO2018207316A1 PCT/JP2017/017887 JP2017017887W WO2018207316A1 WO 2018207316 A1 WO2018207316 A1 WO 2018207316A1 JP 2017017887 W JP2017017887 W JP 2017017887W WO 2018207316 A1 WO2018207316 A1 WO 2018207316A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- sealing material
- shaft
- pressure side
- cross
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 27
- 239000003566 sealing material Substances 0.000 claims description 88
- 230000002093 peripheral effect Effects 0.000 claims description 46
- 238000005192 partition Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
- F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
Definitions
- the present invention relates to a seal structure provided between a bit mounting shaft and a bit in an excavator.
- Patent Document 1 US Patent Application Publication No. 2008/011518
- Patent Document 2 US Patent Application Publication No. 2012/312602
- Patent Document 3 Chinese Patent Application Publication No. 1016269475
- Patent Document 4 Chinese Patent Application Publication No. 102747961
- Patent Document 5 Chinese Patent Application Publication No. 102747962
- Patent Document 6 Japanese Utility Model Publication No. 20786262
- the lubricity and wear resistance are improved to improve the life of the seal material.
- the life of the seal material is required to be further increased.
- An object of the present invention is to provide a seal structure that can improve the life of the seal material.
- the seal structure according to the present invention includes an annular seal material.
- the seal material is disposed in a seal groove provided in the housing in a sliding gap between the shaft and the housing.
- the sealing material partitions the high pressure side and the low pressure side.
- the seal groove provided in the housing has a low pressure side surface portion, a groove bottom portion, and a high pressure side surface portion.
- the low pressure side surface portion constitutes a low pressure side surface of the seal groove.
- the low-pressure side surface portion extends along a direction orthogonal to the axial direction in a cross section of the seal structure in a virtual plane parallel to the axial direction of the shaft and passing through the center line of the shaft.
- the groove bottom constitutes the bottom surface of the seal groove.
- the groove bottom extends along the axial direction in the cross section of the seal groove.
- the high-pressure side surface portion constitutes a high-pressure side surface of the seal groove.
- the high-pressure side surface portion extends along a direction orthogonal to the axial direction in the cross section of the seal groove.
- the sealing material includes an outer peripheral surface facing the groove bottom portion, a curved inner peripheral surface facing the shaft and protruding toward the shaft, an installation surface facing the low pressure side surface portion, and an upper side surface facing the high pressure side surface portion.
- the installation surface has a shape that is recessed toward the upper surface.
- the upper side surface has a shape that is recessed toward the installation surface.
- the sliding heat between the shaft and the sealing material can be suppressed. Thereby, the lifetime of a sealing material can be improved.
- Hh calculated using H and h satisfies 0.9 ⁇ Hh ⁇ 1.2. Thereby, the sliding heat between a shaft and a sealing material can be suppressed.
- H satisfies 3.9 ⁇ H ⁇ 4.9. Thereby, the sliding heat between a shaft and a sealing material can be suppressed.
- the longest length between the inner peripheral surface and the outer peripheral surface in the cross section of the seal material is W1 [mm]
- the length from the groove bottom to the shaft in the cross section of the seal structure Is W [mm]
- 0.877 ⁇ W / W1 ⁇ 0.880 is satisfied.
- the seal material in the cross section of the seal material has a symmetrical shape with respect to the second center line extending along the radial direction.
- FIG. 3 is a cross-sectional view of the sealing material along the line AA shown in FIG. 2.
- FIG. 2 It is the schematic which showed the cross section of the seal structure.
- FIG. 1 is a cross-sectional view showing a bit 2 and a bit mounting shaft 3A in an excavator.
- a bit 2 is mounted on a bit mounting shaft 3A provided on the bit mounting base 3 so as to be rotatable at high speed.
- the bit 2 is provided with a cylindrical insertion hole 9.
- a spherical bearing 6 is provided in the insertion hole 9.
- the bit attachment shaft 3 ⁇ / b> A is inserted into the spherical bearing 6. Lubricating oils 4 and 5 are held between the insertion hole 9 and the bit mounting shaft 3A.
- a seal groove 31 is provided in an annular shape on the inner peripheral surface of the insertion hole 9 of the bit 2 and in which the seal material 10 is disposed.
- the bit 2 employs a so-called downhole motor (mud motor) mechanism that rotates the bit 2 around the rotation center axis CL1 using the flow force of muddy water as a power.
- mud motor downhole motor
- the rotation area of the bit 2 is divided into a low speed rotation (100 to 200 rpm), a medium speed rotation (200 to 500 rpm), and a high speed rotation (500 rpm or more). be able to.
- a configuration for mid-speed rotation 200 to 500 rpm is employed.
- FIG. 2 is a plan view of sealing material 10 provided in sealing groove 31 according to the embodiment.
- FIG. 3 is a side view of the sealing material 10 shown in FIG. 4 is a cross-sectional view of the sealing material 10 taken along line AA shown in FIG. The sealing material 10 will be described with reference to FIGS.
- the sealing material 10 has an annular shape.
- the sealing material 10 has a predetermined thickness in the thickness direction DR3. 4 is a cross-sectional view in a virtual plane that is parallel to the direction (thickness direction DR3) orthogonal to the radial direction DR2 of the sealing material 10 and that passes through the center line C1 of the sealing material 10. It is.
- the cross section of the sealing material 10 along the line AA is symmetrical with respect to the second center line C2 extending along the radial direction DR2. Since the sealing material 10 has a symmetrical shape with respect to the second center line C2, the mounting direction in the sealing groove 31 is not mistaken, and the productivity can be improved. Therefore, the manufacturing cost can be suppressed.
- the sealing material 10 includes an outer peripheral surface 40, an inner peripheral surface 41, an installation surface 42 and an upper side surface 43.
- the outer peripheral surface 40 constitutes the outer peripheral surface of the annular sealing material 10.
- the outer peripheral surface 40 and the inner peripheral surface 41 are opposed to each other.
- the outer peripheral surface 40 protrudes in a direction away from the inner peripheral surface 41.
- the outer peripheral surface 40 has a curved shape.
- the cross section of the outer peripheral surface 40 along the line AA shown in FIG. 4 is arcuate.
- the inner peripheral surface 41 constitutes the inner peripheral surface of the annular sealing material 10.
- the inner peripheral surface 41 protrudes in a direction away from the outer peripheral surface 40.
- the inner peripheral surface 41 has a curved shape.
- the cross section of the inner peripheral surface 41 along the line AA shown in FIG. 4 is arcuate.
- the installation surface 42 and the upper side surface 43 are opposed to each other.
- the installation surface 42 has a shape that is recessed toward the upper side surface 43.
- the upper side surface 43 has a shape that is recessed toward the installation surface 42. Since the installation surface 42 and the upper side surface 43 are recessed, the thickness of the sealing material 10 in the thickness direction DR3 becomes closer to the center C of the section of the sealing material 10 along the line AA in the radial direction DR2 shown in FIG. Is getting smaller.
- the sealing material 10 is made of, for example, hydrogenated nitrile rubber (HNBR).
- HNBR hydrogenated nitrile rubber
- the sealing material 10 may be made of a material in which nanomaterials are mixed with an elastomer material to improve the characteristics of the elastomer itself.
- the Shore A hardness of the sealing material 10 is 90, for example.
- the sealing material 10 in the embodiment is disposed in a seal groove 31 provided in the housing 30 in a sliding gap between a shaft 20 and the housing 30 described later.
- FIG. 5 is a schematic view showing a cross section of the seal structure 1.
- the cross section shown in FIG. 5 is a cross section of the seal structure 1 in a virtual plane that is parallel to the axial direction DR1 and passes through the center line C3 of the shaft 20.
- the shaft 20 is the bit mounting shaft 3A.
- the housing 30 is the bit 2.
- the axial direction DR1 is a direction in which the shaft 20 extends, and is a vertical direction on the paper surface of FIG.
- the upper side from the seal groove 31 is the high pressure side where muddy water, sand and the like are about to enter, and the lower side from the seal groove 31 is the low pressure side where the spherical bearing 6 is disposed. is there.
- the sealing material 10 partitions the high pressure side and the low pressure side. The sealing material 10 suppresses intrusion of muddy water, sand, and the like from the high pressure side, and suppresses breakage of the spherical bearing 6.
- the seal groove 31 provided in the housing 30 has a low pressure side surface portion 32, a high pressure side surface portion 34, and a groove bottom portion 33.
- the low-pressure side surface portion 32 constitutes a side surface on the low-pressure side of the seal groove 31.
- the low-pressure side portion 32 extends along a direction orthogonal to the axial direction DR1 in the cross section of the seal structure 1.
- the high-pressure side surface portion 34 constitutes a high-pressure side surface of the seal groove 31.
- the high-pressure side surface portion 34 extends along a direction orthogonal to the axial direction DR1 in the cross section of the seal structure 1.
- the groove bottom 33 constitutes the bottom surface of the seal groove 31.
- the groove bottom 33 extends along the axial direction DR1.
- the groove bottom 33 is connected to the high-pressure side surface 34 at one end of the groove bottom 33.
- the groove bottom 33 is connected to the low-pressure side surface 32 at the other end of the groove bottom 33.
- the sealing material 10 is disposed so as to be surrounded between the shaft 20 and the sealing groove 31.
- the installation surface 42 faces the low-pressure side surface portion 32.
- the upper side surface 43 faces the high pressure side surface portion 34.
- the outer peripheral surface 40 faces the groove bottom 33.
- the outer peripheral surface 40 is pressed against the groove bottom 33.
- the inner peripheral surface 41 faces the shaft 20.
- the inner peripheral surface 41 is pressed against the shaft 20.
- the inner peripheral surface 41 has a contact region S that contacts the shaft 20. The contact region S is formed when the inner peripheral surface 41 is pressed by the shaft 20.
- the contact area S has an upper end contact portion 16 at a position closest to the high pressure side of the contact area S in the axial direction DR1.
- the contact region S has a lower end contact portion 17 at a position closest to the low pressure side of the contact region S in the axial direction DR1.
- FIG. 6 is a schematic view showing a state in which pressure is applied to the sealing material 10 from the high pressure side.
- the pressure is applied to the upper side surface 43 (the white arrow in FIG. 6)
- the entire sealing material 10 is deformed so that the recessed portion of the installation surface 42 contacts the low-pressure side surface portion 32.
- the contact area S becomes smaller than that in FIG. 5 which is a state before the pressure is applied.
- the contact area between the shaft 20 and the sealing material 10 is reduced, so that sliding heat between the shaft 20 and the sealing material 10 can be suppressed. Thereby, the lifetime of the sealing material 10 can be improved.
- the sealing material 10 By making muddy water penetrate to a certain position in the contact area S, the slidability between the sealing material 10 and the shaft 20 can be improved. Furthermore, since the sealing material 10 is cooled by muddy water, sliding heat between the shaft 20 and the sealing material 10 can be suppressed. Thereby, the lifetime of the sealing material 10 can be improved.
- the inventors have found that the relationship between the dimension of the sealing material 10 and the dimension of the sealing groove 31 greatly affects the life of the sealing material 10 as the research proceeds.
- FIG. 7 is a schematic diagram showing dimensions of seal groove 31 and shaft 20 according to the embodiment.
- the cross section shown in FIG. 7 is a cross section of the seal structure 1 in a virtual plane that is parallel to the axial direction DR1 and passes through the center line C3 of the shaft 20.
- the length from the groove bottom 33 to the shaft 20 is W [mm]
- the length of the groove bottom 33 in the axial direction DR1 is G [mm]
- the diameter of the shaft 20 is D [mm].
- FIG. 8 is a schematic diagram showing each dimension of the sealing material 10 according to the embodiment.
- the cross section shown in FIG. 8 is a cross section of the sealing material 10 in a virtual plane that is parallel to the direction (thickness direction DR3) perpendicular to the radial direction DR2 of the sealing material 10 and passes through the center line C1 of the sealing material 10.
- the longest length is H [mm]
- the installation surface 42 and the upper side surface 43 The shortest of the lengths between them is h [mm].
- the longest length between the inner peripheral surface 41 and the outer peripheral surface 40 is defined as W1 [mm].
- the heat generation property, wearability, sealing performance, and seal life of the sealing material 10 with respect to various types of sealing materials 10 (Example 1, Example 2, and Comparative Example 1 described later) having different dimensions are described. Evaluation was carried out. A good level is indicated by “good”, an acceptable level is indicated by “permitted”, and an unacceptable level is indicated by “impossible”.
- FIG. 9 is a table showing evaluation results for various sealing materials 10.
- the sealing properties are good levels.
- the size of the contact region S is related. The larger the contact area S, the larger the contact area between the shaft 20 and the inner peripheral surface 41, and the better the sealing performance.
- the size of the contact area S is related to the dimension H of the sealing material 10. As the dimension H increases, the contact area S increases, and the sealing performance improves. In all of Example 1, Example 2, and Comparative Example 1, the size of the dimension H related to the size of the contact region S is determined in Example 1, Example 2, and It can be said that all of Comparative Examples 1 are sufficiently secured.
- the contact area does not become small because the inner peripheral surface of the sealing material does not deform. Since the contact area does not become small, the sliding heat generated between the shaft and the sealing material cannot be suppressed, and the heat generation property is “impossible”. As a result, the lifetime is “impossible”.
- Example 1 When comparing Example 1 and Example 2, the evaluation results of exothermic property, wearability, and life are better in Example 1. As the contact area S is larger, the sliding heat generated between the shaft 20 and the sealing material 10 is larger and the wear resistance is also deteriorated. As a result, the life is also shortened.
- Example 1 Since H in Example 1 is smaller than H in Example 2, the contact area S is smaller in Example 1. Since the contact area S is small and the contact area between the shaft 20 and the inner peripheral surface 41 is small, the evaluation results of the heat generation property and wearability of the sealing material 10 in Example 1 are good. As a result, the life of the sealing material 10 in Example 1 is better.
- Example 1 and Example 2 show that when H is in the range of 3.90 ⁇ H ⁇ 4.90, the life of the sealing material 10 can be improved while ensuring the sealing performance of the sealing material 10.
- W / W1 shown in FIG. 9 is a parameter representing the degree to which the sealing material 10 is compressed by the sealing groove 31 and the shaft 20. As the sealing material 10 is compressed, the surface pressure between the shaft 20 and the sealing material 10 increases. When the surface pressure is increased, the sealing performance is improved, but the sliding heat is increased and the life is deteriorated.
- FIG. 9 shows that when W / W1 is in the range of 0.877 ⁇ W / W1 ⁇ 0.880, the life of the sealing material 10 can be improved while ensuring the sealing performance of the sealing material 10.
- the sealing material 10 has a symmetrical shape with respect to the second center line C2, but may not be symmetrical.
- the recesses in the installation surface 42 and the upper side surface 43 may be recessed in an arc shape or the like.
- sealing structure 10 sealing material, 16 upper end contact portion, 17 lower end contact portion, 20 shaft, 30 housing, 31 seal groove, 32 low pressure side surface portion, 33 groove bottom portion, 34 high pressure side surface portion, 40 outer peripheral surface, 41 inner periphery Surface, 42 installation surface, 43 upper surface, DR1 axial direction, DR2 radial direction, DR3 thickness direction, C center, C1, C3 centerline, C2 second centerline.
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Abstract
Description
図1を参照して、本実施の形態におけるシール構造1が採用される掘削機の先端に設けられるビット2とビット取付軸3Aについて説明する。図1は、掘削機におけるビット2とビット取付軸3Aとを示す断面図である。ビット取付ベース3に設けられたビット取付軸3Aに、ビット2が高速回転可能に装着されている。ビット2には、筒状の挿入孔9が設けられている。挿入孔9には、球状ベアリング6が設けられている。ビット取付軸3Aは、球状ベアリング6に挿入されている。挿入孔9とビット取付軸3Aとの間には、潤滑油4,5が保持されている。
図2は、実施の形態に従うシール溝31に設けられるシール材10の平面図である。図3は、図2に示すシール材10の側面図である。図4は、図2に示すA-A線に沿うシール材10の断面図である。図2から図4を参照しシール材10について説明する。
Claims (6)
- 軸と筐体との間の摺動隙間において前記筐体に設けられるシール溝に配置され、高圧側と低圧側とを仕切る環状のシール材を備えるシール構造であって、
前記軸の軸方向に平行であって前記軸の中心線を通る仮想平面における前記シール構造の断面において、前記筐体に設けられる前記シール溝は、前記シール溝の前記低圧側の側面を構成し前記軸方向に直交する方向に沿って延びる低圧側面部、前記シール溝の底面を構成し前記断面において前記軸方向に沿って延びる溝底部、および前記シール溝の前記高圧側の側面を構成し前記軸方向に直交する方向に沿って延びる高圧側面部を有し、
前記シール材は、前記溝底部と対向する外周面、前記軸と対向し前記軸に向かって突出する湾曲形状の内周面、前記低圧側面部と対向する設置面、および前記高圧側面部に対向する上側面を含み、
前記設置面は、前記上側面に向かって窪む形状を有し、
前記上側面は、前記設置面に向かって窪む形状を有し、
前記シール材の径方向に直交する方向に平行であって前記シール材の中心線を通る仮想平面における前記シール材の断面において、前記シール材の中心線が延びる方向における、前記設置面と前記上側面との間の長さのうち最も長いものをH[mm]とし、前記シール材の中心線が延びる方向における、前記設置面と前記上側面との間の長さのうち最も短いものをh[mm]とした場合、0.755≦h/H≦0.769を満たす、シール構造。 - 前記Hおよび前記hを用いて算出されるH-hが、0.9≦H-h≦1.2を満たす、請求項1に記載のシール構造。
- 前記Hが、3.9≦H≦4.9を満たす、請求項1または請求項2に記載のシール構造。
- 前記シール材の断面において、前記内周面と前記外周面との間の長さのうち最も長いものをW1[mm]とし、前記シール構造の断面において、前記溝底部から前記軸までの長さをW[mm]とした場合、0.877≦W/W1≦0.880を満たす、請求項1から請求項3のいずれか1項に記載のシール構造。
- 前記W1および前記Wを用いて算出されるW1-Wが、0.75≦W1-W≦0.80を満たす、請求項4に記載のシール構造。
- 前記シール材の断面において、前記シール材は、前記径方向に沿って延びる第2の中心線に関して対称な形状を有している、請求項1から請求項5のいずれか1項に記載のシール構造。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US16/607,981 US20210102627A1 (en) | 2017-05-11 | 2017-05-11 | Seal structure |
CN201780090631.9A CN110621922B (zh) | 2017-05-11 | 2017-05-11 | 密封构造 |
AU2017414097A AU2017414097B2 (en) | 2017-05-11 | 2017-05-11 | Seal structure |
PCT/JP2017/017887 WO2018207316A1 (ja) | 2017-05-11 | 2017-05-11 | シール構造 |
JP2019516821A JP6833022B2 (ja) | 2017-05-11 | 2017-05-11 | シール構造 |
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PCT/JP2017/017887 WO2018207316A1 (ja) | 2017-05-11 | 2017-05-11 | シール構造 |
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JP (1) | JP6833022B2 (ja) |
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JP2005036827A (ja) * | 2003-07-15 | 2005-02-10 | Nippon Valqua Ind Ltd | 封止リング |
JP2009541666A (ja) * | 2006-06-21 | 2009-11-26 | トレルボルグ シーリング ソリューションズ ジャーマニー ゲーエムベーハー | シール及びシール構成 |
JP2010084906A (ja) * | 2008-10-01 | 2010-04-15 | Aisin Seiki Co Ltd | カップシール |
JP2016075353A (ja) * | 2014-10-07 | 2016-05-12 | 日本バルカー工業株式会社 | 掘削機用複合シール材 |
JP2017036754A (ja) * | 2015-08-07 | 2017-02-16 | 三菱電線工業株式会社 | シール |
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US2470925A (en) * | 1946-01-16 | 1949-05-24 | Crane Co | Piston seal for flush valves |
US2841429A (en) * | 1955-10-04 | 1958-07-01 | Parker Hannifin Corp | Sealing ring and joint |
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US3550990A (en) * | 1969-06-17 | 1970-12-29 | Minnesota Rubber Co | Sealing device |
JPS5755562Y2 (ja) * | 1977-09-06 | 1982-12-01 | ||
JPS5867164U (ja) * | 1981-10-30 | 1983-05-07 | 三菱電線工業株式会社 | パツキン |
JPS58163761U (ja) * | 1982-04-28 | 1983-10-31 | エヌオーケー株式会社 | パツキン |
US4619534A (en) * | 1984-09-12 | 1986-10-28 | Reed Tool Company | Roller cutter drill bit having a texturized seal member |
US4693343A (en) * | 1985-06-12 | 1987-09-15 | Quadion Corporation | Multi-lobed rectangular sealing ring |
JP2573038Y2 (ja) * | 1992-03-27 | 1998-05-28 | 三菱電線工業株式会社 | 摺動用パッキン |
DE19705222C2 (de) * | 1997-02-12 | 2002-02-14 | Trinova Aeroquip Gmbh | Anordnung zum Verbinden zweier rohrförmiger Elemente |
US7036613B2 (en) * | 2003-09-12 | 2006-05-02 | Reedhycalog, L.P. | Lip seal for roller cone drill bit |
JP5293914B2 (ja) * | 2006-02-21 | 2013-09-18 | Nok株式会社 | 往復動用密封リング |
JP5151241B2 (ja) * | 2007-05-10 | 2013-02-27 | Nok株式会社 | 密封構造 |
JP4993140B2 (ja) * | 2008-10-21 | 2012-08-08 | Smc株式会社 | 低摺動パッキンを備えた流体圧機器 |
US20100147595A1 (en) * | 2008-12-12 | 2010-06-17 | Baker Hughes Incorporated | Bearing seal with improved contact width |
US20130319770A1 (en) * | 2011-02-18 | 2013-12-05 | National Oilwell Varco, L.P. | Drill bit seal and method of using same |
USD692391S1 (en) * | 2011-02-21 | 2013-10-29 | Tyco Electronics Amp Korea Ltd. | O-ring |
USD819187S1 (en) * | 2016-01-26 | 2018-05-29 | Nippon Valqua Industries, Ltd. | Seal |
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- 2017-05-11 CN CN201780090631.9A patent/CN110621922B/zh active Active
- 2017-05-11 JP JP2019516821A patent/JP6833022B2/ja active Active
- 2017-05-11 WO PCT/JP2017/017887 patent/WO2018207316A1/ja active Application Filing
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JP2005036827A (ja) * | 2003-07-15 | 2005-02-10 | Nippon Valqua Ind Ltd | 封止リング |
JP2009541666A (ja) * | 2006-06-21 | 2009-11-26 | トレルボルグ シーリング ソリューションズ ジャーマニー ゲーエムベーハー | シール及びシール構成 |
JP2010084906A (ja) * | 2008-10-01 | 2010-04-15 | Aisin Seiki Co Ltd | カップシール |
JP2016075353A (ja) * | 2014-10-07 | 2016-05-12 | 日本バルカー工業株式会社 | 掘削機用複合シール材 |
JP2017036754A (ja) * | 2015-08-07 | 2017-02-16 | 三菱電線工業株式会社 | シール |
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JPWO2018207316A1 (ja) | 2020-03-12 |
AU2017414097B2 (en) | 2021-05-06 |
CN110621922B (zh) | 2021-12-24 |
JP6833022B2 (ja) | 2021-02-24 |
CN110621922A (zh) | 2019-12-27 |
US20210102627A1 (en) | 2021-04-08 |
AU2017414097A1 (en) | 2019-11-14 |
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