JPH0720199Y2 - Pin coupling device - Google Patents
Pin coupling deviceInfo
- Publication number
- JPH0720199Y2 JPH0720199Y2 JP1990006329U JP632990U JPH0720199Y2 JP H0720199 Y2 JPH0720199 Y2 JP H0720199Y2 JP 1990006329 U JP1990006329 U JP 1990006329U JP 632990 U JP632990 U JP 632990U JP H0720199 Y2 JPH0720199 Y2 JP H0720199Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- boss
- coupling device
- pin coupling
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 title claims description 11
- 238000010168 coupling process Methods 0.000 title claims description 11
- 238000005859 coupling reaction Methods 0.000 title claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000005060 rubber Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2350/00—Machines or articles related to building
- F16C2350/26—Excavators
Landscapes
- Pivots And Pivotal Connections (AREA)
- Component Parts Of Construction Machinery (AREA)
- Gasket Seals (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、例えば油圧ショベル等の建設機械に好適に用
いられるピン結合装置に関し、特に、ピン結合された一
側部材と他側部材との間にＯリングを装着するようにし
たピン結合装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pin connecting device that is preferably used in a construction machine such as a hydraulic excavator, and particularly, to a pin connecting one side member and another side member. The present invention relates to a pin connecting device in which an O-ring is attached.
一般に、例えば油圧ショベル等のアームとバケットを回
動自在に連結するピン結合装置には、作業中に土砂等の
粉粒物が掛り、該粉粒物がピン結合装置内に侵入してピ
ンの外周面やボスの内周面を損傷する恐れがある。この
ため、ピンを介して同軸に設けられる一側部材のボスと
他側部材との間の衝合部外周側にはシール用のＯリング
を装着し、両部材の端面間に粉粒物が侵入するのを防止
するようにしている。In general, for example, a pin coupling device that rotatably connects an arm such as a hydraulic excavator and a bucket is covered with a powder or granular material such as earth and sand during work, and the powder or granular material enters the pin coupling device to prevent The outer peripheral surface and the inner peripheral surface of the boss may be damaged. For this reason, an O-ring for sealing is attached to the outer peripheral side of the abutting portion between the boss of one side member and the other side member which are coaxially provided via the pin, and the powder or granules are caught between the end faces of both members. I try to prevent intrusion.
ところで、従来技術におけるＯリングはゴム材で一体に
形成してあるため、該Ｏリングと一側部材のボスまたは
他側部材との間に粉粒物を食み込んで周方向に大きな張
力を受けたような場合には、Ｏリングが切断してしま
い、ピン側に粉粒物が大量に侵入してしまうという欠点
がある。By the way, since the O-ring in the prior art is integrally formed of a rubber material, a large amount of powder or granules is eroded between the O-ring and the boss of the one side member or the other side member to generate a large tension in the circumferential direction. If it is received, the O-ring will be broken, and a large amount of powder particles will enter the pin side.
そして、作業中にＯリングが切断した場合には、単にＯ
リングを交換するだけでは足りず、ピン結合装置内に侵
入した粉粒物を除去しなければならないという面倒な事
態を招くことになる。And if the O-ring breaks during work, simply
Replacing the ring is not enough, and it causes a troublesome situation that the particulate matter that has entered the pin coupling device must be removed.
本考案は上述した従来技術の欠点に鑑みなされたもの
で、Ｏリングの切断事故を防止でき、耐久性を向上させ
ることができるようにしたピン結合装置を提供するもの
である。The present invention has been made in view of the above-mentioned drawbacks of the prior art, and provides a pin coupling device capable of preventing an O-ring cutting accident and improving durability.
上述した課題を解決するために本考案は、先端にボスを
有する一側部材と、該一側部材を形成するボスの軸方向
両端に衝合するように配設された他側部材と、該他側部
材間に前記ボスを連結するピンと、前記ボスの両端と他
側部材との間の衝合部外周側に装着されたＯリングとか
らなるピン結合装置において、前記Ｏリングをゴム製リ
ング本体と、該リング本体内に全周に亘って埋設された
拡縮径可能な補強部材とから構成したことにある。In order to solve the above-mentioned problems, the present invention relates to one side member having a boss at its tip, and another side member disposed so as to abut against both axial ends of the boss forming the one side member, A pin coupling device comprising a pin for connecting the boss between the other side members and an O ring mounted on the outer peripheral side of the abutting portion between both ends of the boss and the other side member, wherein the O ring is a rubber ring. It is composed of a main body and a reinforcing member which is embedded in the ring main body along the entire circumference thereof and which can be expanded and contracted.
上記構成により、補強部材はゴム製リング本体と一体に
拡縮径するからＯリングとしてのシール性を保持でき、
しかもリング本体に周方向の抗張力を与えることがで
き、Ｏリングの切断を防止することができる。With the above configuration, since the reinforcing member expands and contracts with the rubber ring body integrally, the sealing property as an O ring can be maintained,
Moreover, the ring body can be given a tensile strength in the circumferential direction and the O-ring can be prevented from being cut.
以下、本考案の実施例を油圧ショベルのピン結合装置に
適用した場合を例に挙げ、図面に基づき詳述する。Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings by exemplifying a case where the present invention is applied to a pin connecting device of a hydraulic excavator.
第１図ないし第５図は第１の実施例を示す。図におい
て、１は後述するＯリング８を用いたピン結合装置を有
する油圧ショベルを示す。２は該油圧ショベル１のショ
ベル本体、３は油圧ショベル１のフロントを構成し、該
ショベル本体２に軸支されたブームで、該ブーム３の先
端には一側部材としてのアーム４が軸支され、該アーム
４の先端には他側部材としてのブラケット5A,5Aを介し
てバケット５が軸支されている。1 to 5 show a first embodiment. In the figure, 1 indicates a hydraulic excavator having a pin coupling device using an O-ring 8 described later. Reference numeral 2 denotes a shovel body of the hydraulic excavator 1, 3 denotes a front of the hydraulic shovel 1, and is a boom pivotally supported by the shovel body 2, and an arm 4 as one side member is pivotally supported at a tip of the boom 3. The bucket 5 is pivotally supported at the tip of the arm 4 via brackets 5A, 5A as other members.
第２図は前記アーム４とバケット５のピン結合装置を示
し、６はアーム４の先端に形成されたボス4Aに挿通され
たピンで、該ピン６の両端側はバケット５のブラケット
5A,5A、および補強板7,7に挿通され、該各補強板７は各
ブラケット5Aに固着力され、該各ブラケット5Aの一部を
構成している。FIG. 2 shows a pin coupling device of the arm 4 and the bucket 5, 6 is a pin inserted into a boss 4A formed at the tip of the arm 4, and both ends of the pin 6 are brackets of the bucket 5.
5A, 5A and reinforcing plates 7, 7 are inserted, and each reinforcing plate 7 is fixed to each bracket 5A and constitutes a part of each bracket 5A.
8,8は前記ピン６に同軸に設けられたボス4Aと補強板７
の各端面4A1、7A外周側にこれらを密封するように装着
されたＯリングを示し、該Ｏリング8,8は該端面4A1,7A
の隙間に外部から塵埃が侵入したり、ボス4Aとピン６と
の間等に供給されたグリースが外部漏出したりするのを
防止している。8 and 8 are a boss 4A coaxially provided on the pin 6 and a reinforcing plate 7.
Each end surface 4A 1 of the 7A outer peripheral side shows the loaded O-ring to seal them, the O-ring 8 and 8 end surface 4A 1, 7A
This prevents dust from intruding into the gap of from and from leaking grease supplied between the boss 4A and the pin 6 to the outside.
ここで、該Ｏリング８は第３図に示すように、天然ゴ
ム、合成ゴム等の可撓性樹脂材料によって円環状に形成
され、中空筒状のゴム製内筒部9A及びゴム製外筒部9Bか
らなるリング本体９と、該リング本体９内に埋設される
ように該内筒部9Aと外筒部9Bとの間に全周にわたって配
設された金属メッシュ製の筒状補強部材10とによって断
面円形の中空筒体状に形成されている。Here, as shown in FIG. 3, the O-ring 8 is formed in an annular shape by a flexible resin material such as natural rubber or synthetic rubber, and has a hollow cylindrical rubber inner cylinder portion 9A and a rubber outer cylinder. A ring body 9 composed of a portion 9B, and a tubular reinforcing member 10 made of a metal mesh, which is disposed over the entire circumference between the inner cylinder portion 9A and the outer cylinder portion 9B so as to be embedded in the ring body 9. And are formed into a hollow cylindrical body having a circular cross section.
本実施例のＯリング８は叙上の如くであり、従来技術の
Ｏリングと同様に用いることができる。しかし、本実施
例のＯリング８は中空の筒体状に形成し、かつ、筒状補
強部材10は金属製メッシュで構成して拡縮径可能にした
から、径方向に外力を受けたとき偏平状に変形すること
ができる。従って、アーム４のボス部4Aと補強板７が第
４図に示すように互いに接近する方向に変位する場合で
も、逆に第５図に示すように互いに離間する方向に変位
する場合でも、Ｏリング８は当該片に応じて偏平状に変
形し、或いは円形に復元することができる結果、高いシ
ール性を発揮することができる。The O-ring 8 of this embodiment is as described above and can be used in the same manner as the O-ring of the prior art. However, since the O-ring 8 of this embodiment is formed in the shape of a hollow cylinder, and the cylindrical reinforcing member 10 is made of a metal mesh so that the diameter can be expanded and contracted, it is flat when an external force is applied in the radial direction. Can be transformed into a shape. Therefore, even if the boss portion 4A of the arm 4 and the reinforcing plate 7 are displaced in the direction in which they approach each other as shown in FIG. 4, or conversely, they are displaced in the direction in which they are separated from each other as shown in FIG. The ring 8 can be deformed into a flat shape or restored to a circular shape depending on the piece, and as a result, high sealing performance can be exhibited.
また、本実施例のＯリング８は金属メッシュ製の筒状補
強部材10がリング本体９の全周にわたって内装されてい
るから、周方向の張力に対しては、従来技術のＯリング
と比較して遥かに高い強度（抗張力）を有しており、切
断事故を確実に防止できる。Further, in the O-ring 8 of this embodiment, since the tubular reinforcing member 10 made of a metal mesh is installed over the entire circumference of the ring body 9, the tension in the circumferential direction is different from that of the O-ring of the prior art. It has much higher strength (tensile strength) and can reliably prevent cutting accidents.
次に、第６図は本考案の第２の実施例に係るＯリング11
を示す。該Ｏリング11の特徴とするところは、筒体状の
ゴム製リング本体12内に金属製コイルからなる螺旋状補
強部材13を設けたことにあり、このように構成すること
によっても、第１実施例のＯリング８と同等のシール
性、抗張力性を与えることができる。Next, FIG. 6 shows an O-ring 11 according to a second embodiment of the present invention.
Indicates. A feature of the O-ring 11 is that a spiral reinforcing member 13 made of a metal coil is provided in a cylindrical rubber ring body 12 and the first ring can also be formed by such a configuration. It is possible to provide the same sealing property and tensile strength as the O-ring 8 of the embodiment.
なお、前記各実施例では、中空筒体状のＯリング8,11を
例に挙げたが、中実のＯリングにも本考案は適用できる
ものである。In each of the above embodiments, the hollow cylindrical O-rings 8 and 11 are taken as an example, but the present invention can also be applied to solid O-rings.
また、各実施例では、金属メッシュ製または金属コイル
製の補強部材10,13を例に挙げたが高強度の化学繊維等
で形成したメッシュ、コイル等も補強部材に用いること
ができる。Further, in each embodiment, the reinforcing members 10 and 13 made of a metal mesh or a metal coil are taken as an example, but a mesh, a coil or the like formed of high-strength chemical fiber or the like can also be used as the reinforcing member.
本考案は以上詳述した如くであって、Ｏリングのゴム製
リング本体内に拡縮径可能な補強部材を全周にわたって
埋設したから、従来技術のＯリングと同等以上のシール
性を有し、しかも周方向の張力に対して高い強度を持っ
た耐久性のあるＯリングにできる。The present invention is as described above in detail, and since the reinforcing member that can be expanded and contracted is embedded in the rubber ring main body of the O-ring over the entire circumference, it has a sealing property equal to or higher than that of the conventional O-ring. Moreover, a durable O-ring having high strength against tension in the circumferential direction can be obtained.
第１図ないし第５図は本考案の第１の実施例を示し、第
１図は油圧ショベルの外観図、第２図は第１図中のII-I
I矢示方向拡大断面図、第３図はＯリングの縦断面図、
第４図はＯリングの撓んだ状態を示す断面図、第５図は
Ｏリングの復元状態を示す断面図、第６図は本考案の第
２の実施例に係るＯリングの縦断面図である。 4A……ボス（一側部材）、5A……ブラケット（他側部
材）、６……ピン、７……補強板、8,11……Ｏリング、
9,12……ゴム製リング本体、10,13……補強部材。1 to 5 show a first embodiment of the present invention, FIG. 1 is an external view of a hydraulic excavator, and FIG. 2 is II-I in FIG.
I is an enlarged sectional view in the direction of the arrow, Fig. 3 is a longitudinal sectional view of the O-ring,
FIG. 4 is a sectional view showing a bent state of the O-ring, FIG. 5 is a sectional view showing a restored state of the O-ring, and FIG. 6 is a longitudinal sectional view of the O-ring according to the second embodiment of the present invention. Is. 4A: Boss (one side member), 5A: Bracket (other side member), 6 ... Pin, 7 ... Reinforcing plate, 8,11 ... O-ring,
9,12 …… Rubber ring body, 10,13 …… Reinforcing member.
Claims (1)
材を形成するボスの軸方向両端に衝合するように配設さ
れた他側部材と、該他側部材間に前記ボスを連結するピ
ンと、前記ボスの両端と他側部材との間の衝合部外周側
に装着されたＯリングとからなるピン結合装置におい
て、前記Ｏリングをゴム製リング本体と、該リング本体
内に全周に亘って埋設された拡縮径可能な補強部材とか
ら構成したことを特徴とするピン結合装置。1. A one-sided member having a boss at its tip, another sided member disposed so as to abut against both axial ends of a boss forming the one-sided member, and the boss between the other sided members. In a pin coupling device comprising an O-ring mounted on an outer peripheral side of an abutting portion between both ends of the boss and the other side member, the O-ring being a rubber ring main body, and the inside of the ring main body. A pin coupling device characterized in that the pin coupling device comprises a reinforcing member that is embedded over the entire circumference and is capable of expanding and contracting in diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990006329U JPH0720199Y2 (en) | 1990-01-26 | 1990-01-26 | Pin coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990006329U JPH0720199Y2 (en) | 1990-01-26 | 1990-01-26 | Pin coupling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0399064U JPH0399064U (en) | 1991-10-16 |
| JPH0720199Y2 true JPH0720199Y2 (en) | 1995-05-15 |
Family
ID=31510006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990006329U Expired - Lifetime JPH0720199Y2 (en) | 1990-01-26 | 1990-01-26 | Pin coupling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720199Y2 (en) |
-
1990
- 1990-01-26 JP JP1990006329U patent/JPH0720199Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0399064U (en) | 1991-10-16 |
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