JPS592399Y2 - Hydraulic excavator pin bearing oil supply device - Google Patents

Hydraulic excavator pin bearing oil supply device

Info

Publication number
JPS592399Y2
JPS592399Y2 JP15648679U JP15648679U JPS592399Y2 JP S592399 Y2 JPS592399 Y2 JP S592399Y2 JP 15648679 U JP15648679 U JP 15648679U JP 15648679 U JP15648679 U JP 15648679U JP S592399 Y2 JPS592399 Y2 JP S592399Y2
Authority
JP
Japan
Prior art keywords
oil
pin
hydraulic excavator
pin bearing
conduit
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
Application number
JP15648679U
Other languages
Japanese (ja)
Other versions
JPS5675394U (en
Inventor
邦康 吉岡
啓祐 佐々木
重義 児玉
四三 木原
Original Assignee
三菱重工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to JP15648679U priority Critical patent/JPS592399Y2/en
Publication of JPS5675394U publication Critical patent/JPS5675394U/ja
Application granted granted Critical
Publication of JPS592399Y2 publication Critical patent/JPS592399Y2/en
Expired legal-status Critical Current

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Description

【考案の詳細な説明】 油圧ショベルは、第1図に図示されるように、走行体a
、旋回台b、ブームC、アームdおよびパケットeより
なり、ブームCは第1シヤケツキf、アームdは第2ジ
ヤツキg、パケットeは第3ジヤツキhで駆動されるよ
うになっている。
[Detailed description of the invention] As shown in FIG. 1, the hydraulic excavator has a traveling body a
, a swivel base b, a boom C, an arm d, and a packet e. The boom C is driven by a first jack f, the arm d is driven by a second jack g, and the packet e is driven by a third jack h.

これら従来のピン軸受部は、第2図に図示されるように
、ピン受iとヨークjとピンkが嵌装され、ノックピン
1で゛ピンkが抜は出ないようにヨークjに固定されて
いる。
In these conventional pin bearing parts, as shown in FIG. 2, a pin receiver i, a yoke j, and a pin k are fitted, and a knock pin 1 is fixed to the yoke j so that the pin k cannot be pulled out. ing.

またピンにとピン受iとには軸受mが介装され、外部か
ら塵埃進入防止と内部グリース流出防止機能を有するリ
ップシールnが同軸受mの両側に嵌装され、同両軸受m
間の油溜りOに油路pを介して注油口qが接続されてお
り、注油口qより軸受mにグリースが注油されるように
なっている。
In addition, a bearing m is interposed between the pin and the pin receiver i, and lip seals n, which have a function of preventing dust from entering from the outside and preventing internal grease from flowing out, are fitted on both sides of the bearing m.
An oil filler port q is connected to an oil reservoir O between the bearings through an oil passage p, and grease is applied to the bearing m from the oil filler port q.

このように従来のピン軸受部では、定期注油が必要であ
るが、高所のピン軸受部に注油することが煩雑で危険で
あり、注油忘れや注油口qのつまり等で焼損事故を生じ
、がた発生で騒音の発生源となっていた。
Conventional pin bearings require regular lubrication as described above, but it is complicated and dangerous to lubricate high-placed pin bearings, and forgetting to lubricate or clogging the oil filler port q can lead to burnout accidents. The rattling caused the noise.

本案はこのような欠点を除去した油圧ショベルのピン軸
受の改良に係り、油圧ショベルの油圧回路において、ア
クチュエータ駆動用の油ポンプにおける吐出管から調圧
弁を介装して分岐されがっ戻り管から分岐されて相互に
接続された導管を設けるとともに、前記導管に開閉操作
可能な過流防止弁を介して複数の分岐管を連設し、前記
各分岐管を前記油圧ショベルの複数のピン軸受摺動部に
おける潤滑用油路に並列に接続したことを特徴とするも
ので、その目的とする処は、整備が簡単で確実に給油す
ることができる油圧ショベルピン軸受給油装置を供する
点にある。
This proposal relates to an improvement of pin bearings for hydraulic excavators that eliminates such drawbacks. A plurality of branch pipes are provided which are branched and connected to each other, and a plurality of branch pipes are connected to the pipe through an excessive flow prevention valve that can be opened and closed, and each of the branch pipes is connected to a plurality of pin bearing slides of the hydraulic excavator. It is characterized by being connected in parallel to the lubricating oil passage in the moving parts, and its purpose is to provide a hydraulic excavator pin bearing oil supply device that is easy to maintain and can reliably supply oil.

本案は前記したように油圧ショベルの油圧回路において
、アクチュエータ駆動用の油ポンプにおける吐出管から
調圧弁を介装して分岐されかつ戻り管から分岐されて相
互に接続された導管を設けるとともに、前記導管に開閉
操作可能な過流防止弁を介して複数の分岐管を連設し、
前記各分岐管を前記油圧ショベルの複数のピン軸受摺動
部における潤滑用油路に並列に接続した・め、前記油圧
ショベルを運転させると、前記油ポンプの吐出管路に圧
油が供給され、または前記油ポンプの戻り管路に戻り油
が供給され、前記吐出管路側あるいは前記戻り管路側の
圧油の一部が導管中の調圧弁と過流防止弁の作用によっ
て各分岐管を介して各ピン軸受摺動部の各潤滑用油路中
に自動的に程よく常時に導入されることになり、前記複
数のピン軸受摺動部に油が自動的に給油される。
As described above, in the hydraulic circuit of a hydraulic excavator, the present invention provides a conduit which is branched from the discharge pipe of the oil pump for driving the actuator via a pressure regulating valve, and which is branched from the return pipe and connected to each other. Multiple branch pipes are connected to the conduit through overflow prevention valves that can be opened and closed.
Each of the branch pipes is connected in parallel to a lubricating oil passage in a plurality of pin bearing sliding parts of the hydraulic excavator, so that when the hydraulic excavator is operated, pressure oil is supplied to the discharge pipe of the oil pump. , or return oil is supplied to the return pipe of the oil pump, and a part of the pressure oil on the discharge pipe side or the return pipe side is passed through each branch pipe by the action of a pressure regulating valve and an overflow prevention valve in the pipe. The lubricating oil passages of the respective pin bearing sliding parts are automatically and constantly introduced in a moderate amount, and the plurality of pin bearing sliding parts are automatically supplied with oil.

従って本案においては、油圧ショベルの運転に伴い前記
各ピン軸受に自動的に給油することができるので、整備
が頗る簡単であるにもか・わらずピン軸受の焼損を未然
に防止でき、この焼損に伴ならトラブルを確実に回避す
ることができる。
Therefore, in this proposal, each of the pin bearings can be automatically supplied with oil as the hydraulic excavator is operated, so maintenance is extremely simple and burnout of the pin bearings can be prevented. If you do this, you can definitely avoid trouble.

以下本案を第1図および゛第3図ないし第4図に図示の
実施例について説明すると、1はエンジン2で駆動され
る油ポンプで、同油ポンプ1の吐出口に一端が接続され
た供給管3と油タンク7にフィルタ8を介して一端が接
続された戻り管4との各他端は操作弁5を介して第1、
第2、第3ジヤツキf、 g、 h等のアクチュエータ
6の各室6a。
The present invention will be explained below with reference to the embodiment shown in FIG. 1 and FIGS. The other ends of the pipe 3 and the return pipe 4, one end of which is connected to the oil tank 7 via a filter 8, are connected to a first
Each chamber 6a of the actuator 6 includes second and third jacks f, g, h, etc.

6bに接続しており、油ポンプ1の稼動状態において、
操作弁5を切換操作することにより、アクチュエータ6
の各室6a、6bのいずれか一方に圧油を供給しまたは
いずれも、圧油を供給しないように遮断することができ
るようになっている。
6b, and when the oil pump 1 is in operation,
By switching the operation valve 5, the actuator 6
Pressure oil can be supplied to either one of the chambers 6a, 6b, or both can be shut off so that no pressure oil is supplied.

また供給管3に一端が接続された導管9に調圧弁10が
介装され、同導管9の他端は過流防止弁11に接続され
、調圧弁10より過流防止弁11寄りの導管9と戻り管
4とに導管12が介装されている。
Further, a pressure regulating valve 10 is interposed in a conduit 9 whose one end is connected to the supply pipe 3 , and the other end of the conduit 9 is connected to an overflow prevention valve 11 . A conduit 12 is interposed between the return pipe 4 and the return pipe 4 .

さらに過流防止弁11の出口側は分岐管13を介して各
ピン軸受部20に接続されている。
Further, the outlet side of the overflow prevention valve 11 is connected to each pin bearing portion 20 via a branch pipe 13.

しかしピン軸受部20は、第3図に図示されるように構
成されており、ピン受21とヨーク22とにピン23が
差込まれ、ノックピン24でヨーク22にピン23が固
定されている。
However, the pin bearing portion 20 is constructed as shown in FIG. 3, and a pin 23 is inserted into the pin receiver 21 and the yoke 22, and the pin 23 is fixed to the yoke 22 by a knock pin 24.

またピン受21とピン23とに1対の軸受25が介装さ
れ、両軸受25間の油溜め26は油路27を介してピン
23の一端の注油金具28に接続され、同注油金具2B
は導管29を介して分岐管13に接続されている。
A pair of bearings 25 is interposed between the pin receiver 21 and the pin 23, and an oil reservoir 26 between both bearings 25 is connected to an oil fitting 28 at one end of the pin 23 via an oil passage 27.
is connected to the branch pipe 13 via a conduit 29.

さらにピン23の他端に空気抜き金具30が取付けられ
、同空気抜き金具30は油路31を介して油溜め26に
接続されている。
Further, an air vent fitting 30 is attached to the other end of the pin 23, and the air vent fitting 30 is connected to the oil reservoir 26 via an oil passage 31.

さらに両軸受25の両側にリップシール32が嵌装され
ており、油漏れと塵埃進入とが共に防止されるようにな
っている。
Further, lip seals 32 are fitted on both sides of both bearings 25 to prevent both oil leakage and dust entry.

第1図および第3図ないし第4図に図示の実施例は前記
したように構成されているので、運転初期に、第4図の
ように操作弁5が遮断された状態において、ポンプ1が
運転されると、圧油は調圧弁10で一定圧に保持されな
がら導管12、戻り管4およびフィルタ8を介して油タ
ンク7に帰るが、この時管路抵抗、フィルタ抵抗のため
、導管9.12の圧力が若干上昇し、この若干昇圧され
た油は過流防止弁11.分岐管13、導管29、注油金
具28および油路27を介して油溜め26に供給され、
軸受25は潤滑される。
Since the embodiment shown in FIG. 1 and FIGS. 3 and 4 is configured as described above, the pump 1 is operated in the state in which the operation valve 5 is shut off as shown in FIG. 4 at the beginning of operation. During operation, the pressure oil returns to the oil tank 7 via the conduit 12, return pipe 4 and filter 8 while being maintained at a constant pressure by the pressure regulating valve 10. At this time, due to conduit resistance and filter resistance, the pressure oil returns to the oil tank 7. The pressure at 11..12 increases slightly, and this slightly increased oil pressure passes through the overflow prevention valve 11.12. It is supplied to the oil reservoir 26 via the branch pipe 13, the conduit 29, the oil fitting 28 and the oil passage 27,
Bearing 25 is lubricated.

また操作弁5をいずれか一方へ切換操作すると、圧油は
アクチュエータ6のいずれか一方の室6a、6bに供給
され、アクチュエータ6は伸縮されると・もに、戻り油
が戻り管4を通過して油タンク7へ返送され、同戻り管
4内の圧力も若干昇圧されるので、戻り油は導管12,
9を介して前記したと同様に軸受部20に供給される。
Furthermore, when the operating valve 5 is switched to either one, pressure oil is supplied to either chamber 6a or 6b of the actuator 6, the actuator 6 is expanded or contracted, and the return oil passes through the return pipe 4. The oil is then returned to the oil tank 7, and the pressure inside the return pipe 4 is also slightly increased.
9 to the bearing section 20 in the same manner as described above.

一方、常時開となっている過流防止弁11を通過する油
は、ピン軸受部20の自然消耗骨を補う程度の極めて小
量であるが、分岐管13または導管29が万一破断した
場合には、過流防止弁11を急速に油が通過しようとし
て、非出入口の差圧が大きくなって自動的に弁11は閉
止される。
On the other hand, the amount of oil that passes through the overflow prevention valve 11, which is always open, is extremely small enough to compensate for the naturally depleted bone of the pin bearing 20, but in the unlikely event that the branch pipe 13 or the conduit 29 breaks. In this case, the oil tries to rapidly pass through the overflow prevention valve 11, and the pressure difference between the non-exit and inlet ports becomes large, and the valve 11 is automatically closed.

しかして潤滑初期には、ピン軸受部20に若干多量の油
が必要であり、また油溜め26に空気が入っているため
、過流防止弁11を手動で開放すると・もに、空気抜き
金具30を操作すれば、油溜め26内の空気は外部へ放
出されながら油溜め26内に油が充分に導入される。
However, in the early stages of lubrication, the pin bearing 20 requires a slightly large amount of oil, and the oil reservoir 26 contains air. By operating , the air in the oil sump 26 is released to the outside, and a sufficient amount of oil is introduced into the oil sump 26.

そして空気抜き金具30より油が流出した時点で、空気
抜き操作を中止する。
Then, when the oil flows out from the air vent fitting 30, the air venting operation is stopped.

またピン軸受部20の点検または分岐管13および導管
29の修理時には、過流防止弁11を手動で閉塞する。
Further, when inspecting the pin bearing portion 20 or repairing the branch pipe 13 and the conduit 29, the overflow prevention valve 11 is manually closed.

このように油圧ショベルを運転してピン軸受部20に給
油を必要とする状態においては、油ポンプ1が常時運転
され、ピン軸受部20に油が自動的に供給されるので、
給油忘れによる軸受焼付が確実に防止され、またグリー
スガンによる手動供油が不用となって、整備が頗る楽に
なる。
In this manner, when the hydraulic excavator is operated and the pin bearing portion 20 requires oil supply, the oil pump 1 is constantly operated and oil is automatically supplied to the pin bearing portion 20.
Bearing seizure due to forgetting to lubricate is reliably prevented, and manual lubrication with a grease gun is no longer required, making maintenance much easier.

またピン軸受部20にグリース潤滑を施す代りにアクチ
ュエータ6の作動油を供給した・め、軸受機能が大巾に
向上し、寿命が長くなる。
Furthermore, since hydraulic oil for the actuator 6 is supplied instead of applying grease lubrication to the pin bearing portion 20, the bearing function is greatly improved and the life span is extended.

さらに過流防止弁11を設けた・め、万一ピン軸受部2
0、分岐管13および導管29のいずれかパ破損しても
、自動的に油の流出が防止できる。
In addition, an overflow prevention valve 11 is provided, so that in case the pin bearing part 2
0. Even if either the branch pipe 13 or the conduit 29 is damaged, oil leakage can be automatically prevented.

またピン軸受部20のみならず、車体の下、手の届きに
くい所等の給油光が開放されていない油溜りの摺動部に
も給油することができる。
Furthermore, it is possible to supply oil not only to the pin bearing part 20 but also to sliding parts of oil sumps where the oil supply light is not exposed, such as under the vehicle body and in hard-to-reach places.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本案に係るピン軸受給油装置の一実施例を備え
た油圧ショベルの側面図、第2図に従来のピン軸受部の
縦断正面図、第3図は前記本案実施例におけるピン軸受
部の縦断正面図、第4図はその油圧回路図である。 1・・・油ポンプ、2・・・エンジン、3・・・供給管
、4・・・戻り管、5・・・操作弁、6・・・アクチュ
エータ、7・・・油タンク、8・・・フィルタ、9・・
・導管、10・・・調圧弁、11・・・過流防止弁、1
2・・・導管、13・・・分岐管、20・・・ピン軸受
部、21・・・ピン受、22・・・ヨーク、23・・・
ピン、24・・・ノックピン、25・・・軸受、26・
・・油溜め、27・・・油路、2B・・・注油金具、2
9・・・導管、30・・・空気抜き金具、31・・・油
路、32・・・リップシール。
FIG. 1 is a side view of a hydraulic excavator equipped with an embodiment of the pin bearing oil supply device according to the present invention, FIG. 2 is a longitudinal sectional front view of a conventional pin bearing, and FIG. 3 is a pin bearing in the embodiment of the present invention. FIG. 4 is a longitudinal sectional front view and a hydraulic circuit diagram thereof. DESCRIPTION OF SYMBOLS 1... Oil pump, 2... Engine, 3... Supply pipe, 4... Return pipe, 5... Operating valve, 6... Actuator, 7... Oil tank, 8...・Filter, 9...
・Conduit, 10...Pressure regulating valve, 11...Overflow prevention valve, 1
2... Conduit, 13... Branch pipe, 20... Pin bearing portion, 21... Pin receiver, 22... Yoke, 23...
Pin, 24... Dowel pin, 25... Bearing, 26.
...Oil sump, 27...Oil path, 2B...Oil fitting, 2
9... Conduit, 30... Air vent fitting, 31... Oil path, 32... Lip seal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧ショベルの油圧回路において、アクチュエータ駆動
用の油ポンプにおける吐出管から調圧弁を介装して分岐
されかつ戻り管から分岐されて相互に接続された導管を
設けるとともに、前記導管に開閉操作可能な過流防止弁
を介して複数の分岐管を連設し、前記各分岐管を前記油
圧ショベルの複数のピン軸受摺動部における潤滑用油路
に並列に接続したことを特徴とする油圧ショベルのピン
軸受給油装置。
In the hydraulic circuit of a hydraulic excavator, a conduit is provided which is branched from a discharge pipe of an oil pump for driving an actuator via a pressure regulating valve, and which is branched from a return pipe and connected to each other, and the conduit is operable to open and close. A hydraulic excavator, characterized in that a plurality of branch pipes are connected in series through overflow prevention valves, and each of the branch pipes is connected in parallel to lubricating oil passages in a plurality of pin bearing sliding parts of the hydraulic excavator. Pin bearing oil supply device.
JP15648679U 1979-11-13 1979-11-13 Hydraulic excavator pin bearing oil supply device Expired JPS592399Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15648679U JPS592399Y2 (en) 1979-11-13 1979-11-13 Hydraulic excavator pin bearing oil supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15648679U JPS592399Y2 (en) 1979-11-13 1979-11-13 Hydraulic excavator pin bearing oil supply device

Publications (2)

Publication Number Publication Date
JPS5675394U JPS5675394U (en) 1981-06-19
JPS592399Y2 true JPS592399Y2 (en) 1984-01-23

Family

ID=29667929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15648679U Expired JPS592399Y2 (en) 1979-11-13 1979-11-13 Hydraulic excavator pin bearing oil supply device

Country Status (1)

Country Link
JP (1) JPS592399Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596657U (en) * 1982-07-06 1984-01-17 ヤンマーディーゼル株式会社 Lubricating device for reduction/reversing machine

Also Published As

Publication number Publication date
JPS5675394U (en) 1981-06-19

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