JPH0122979Y2 - - Google Patents
Info
- Publication number
- JPH0122979Y2 JPH0122979Y2 JP13196984U JP13196984U JPH0122979Y2 JP H0122979 Y2 JPH0122979 Y2 JP H0122979Y2 JP 13196984 U JP13196984 U JP 13196984U JP 13196984 U JP13196984 U JP 13196984U JP H0122979 Y2 JPH0122979 Y2 JP H0122979Y2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- circuit
- pressure
- oil
- hydraulic piston
- 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
Links
- 239000010720 hydraulic oil Substances 0.000 claims description 21
- 238000005461 lubrication Methods 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 description 23
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、クラツチ部分を嵌脱させるための油
圧ピストンを具備する回転クラツチの回転軸のシ
ール部分のシール潤滑機構に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a seal lubrication mechanism for a seal portion of a rotary shaft of a rotary clutch, which is provided with a hydraulic piston for engaging and disengaging the clutch portion.
（従来技術）
第２図に図示するように、回転している原動軸
Ｂと従動軸Ｃの回転の伝達の一つの手段として、
摩擦板６と相手板７との圧接による摩擦力を利用
した回転クラツチが用いられている。上記摩擦板
６と相手板７との圧接には、しばしば作動油によ
り作動する油圧ピストン５が用いられる。そし
て、かかる場合上記作動油の回転軸のシール部分
Ｓの漏れを利用して該シール部分Ｓの潤滑が行わ
れていた。(Prior Art) As shown in FIG. 2, as one means of transmitting the rotation of the rotating driving shaft B and driven shaft C,
A rotary clutch is used that utilizes the frictional force produced by the pressure contact between the friction plate 6 and the mating plate 7. A hydraulic piston 5 operated by hydraulic oil is often used to press the friction plate 6 and the mating plate 7 together. In such cases, the seal portion S is lubricated by utilizing the leakage of the hydraulic oil from the seal portion S of the rotating shaft.
（考案が解決しようとする課題）
しかし、上記潤滑は、油圧ピストン５に圧油が
作用している場合（クラツチ作動時）、即ち作動
油圧回路１に作動油が存在する場合にのみ可能
で、切換弁４が「閉」になり、油圧源８からの圧
油が上記作動油圧回路１に作用しなくなると（油
圧ピストン非作動時）、切換弁４以降の作動油圧
回路に残存する作動油で潤滑が行われるため、残
存する作動油が消費されてしまうとシール部分の
潤滑が行われなくなる。そのため、シール部分の
シールリングＲ等が摩耗するとともに、回転抵抗
が増加する等の問題が生じていた。(Problem to be solved by the invention) However, the above-mentioned lubrication is only possible when pressure oil is acting on the hydraulic piston 5 (during clutch operation), that is, when hydraulic oil is present in the hydraulic pressure circuit 1. When the switching valve 4 is closed and the pressure oil from the hydraulic source 8 no longer acts on the hydraulic circuit 1 (when the hydraulic piston is not operating), the remaining hydraulic oil in the hydraulic circuit after the switching valve 4 Since lubrication is performed, once the remaining hydraulic oil is consumed, the seal portion will no longer be lubricated. This has caused problems such as wear of the seal ring R of the seal portion and increased rotational resistance.
本考案は、上記現況に鑑み行われたもので、回
転クラツチの油圧ピストンに作動油の圧油が作用
していない場合にも、回転軸のシール部分に潤滑
油が供給されるような回転クラツチのシール潤滑
機構を提供することを目的とする。 The present invention was developed in view of the above-mentioned current situation, and is designed to provide a rotary clutch in which lubricating oil is supplied to the seal portion of the rotary shaft even when hydraulic oil is not acting on the hydraulic piston of the rotary clutch. The purpose is to provide a seal lubrication mechanism.
（課題を解決するための手段）
本考案にかかる回転クラツチのシール潤滑機構
は、摩擦板と相手板を油圧ピストンで圧接するこ
とにより回転を伝達する回転クラツチで、該油圧
ピストンを作動させるための作動油圧回路が固定
部から回転軸にわたつて形成され、該固定部と回
転軸の間に外部と隔壁するよう周設されたシール
部分を、上記作動油圧回路からの作動油を利用し
て潤滑をおこなう回転クラツチのシール潤滑機構
において、
上記作動油圧回路の、作動油の断続を行う切換
弁より油圧ピストン側の部分に、油圧ピストン作
動時に閉じ非作動時に開くチエツク弁を介して、
低圧油を供給する潤滑油供給回路を接続したこと
を特徴とする。(Means for Solving the Problems) The rotary clutch seal lubrication mechanism according to the present invention is a rotary clutch that transmits rotation by press-contacting a friction plate and a mating plate with a hydraulic piston. A working hydraulic circuit is formed from the fixed part to the rotating shaft, and a seal part provided around the fixed part and the rotating shaft so as to be partitioned from the outside is lubricated using the working oil from the working hydraulic circuit. In a rotary clutch seal lubrication mechanism that performs
It is characterized by being connected to a lubricating oil supply circuit that supplies low-pressure oil.
（作用）
しかして、上記構成よりなる本回転クラツチの
シール潤滑機構は、油圧ピストンの作動時には、
チエツク弁の作用により潤滑油供給回路の低圧の
圧油に比べ圧力の高い作動油は該供給回路には逆
流せず、該作動油は回転クラツチの油圧ピストン
を押圧するとともに回転軸周りに周設されたシー
ル部分へ漏れてこの部分の潤滑を従来どおり行
う。一方油圧ピストンの非作動時には、切換弁か
ら油圧ピストン側の作動油圧回路内の作動油の圧
力が上記潤滑油供給回路の圧油の圧力より低下す
ることに伴つて、チエツク弁が「開」になり、作
動油圧回路に上記潤滑油供給回路から低圧の潤滑
油が供給され、その結果シール部分に潤滑油が供
給される。(Function) Therefore, the seal lubrication mechanism of the rotary clutch having the above configuration, when the hydraulic piston is operated,
Due to the action of the check valve, hydraulic oil with a higher pressure than the low-pressure oil in the lubricating oil supply circuit does not flow back into the supply circuit, and the hydraulic oil presses the hydraulic piston of the rotary clutch and is disposed around the rotating shaft. It leaks to the sealed part and lubricates this part as usual. On the other hand, when the hydraulic piston is not in operation, the pressure of the hydraulic oil in the hydraulic circuit from the switching valve to the hydraulic piston side is lower than the pressure of the hydraulic oil in the lubricating oil supply circuit, and the check valve is opened. Therefore, low-pressure lubricating oil is supplied to the operating hydraulic circuit from the lubricating oil supply circuit, and as a result, lubricating oil is supplied to the seal portion.
また、油圧ピストンの非作動時にも、作動油圧
回路に潤滑油供給回路より潤滑油が供給されて、
潤滑油が常にほぼ満たされた状態にあるので、次
ぎに切換弁を「開」にして、油圧ピストンを作動
させる場合にタイムラグがない。 In addition, even when the hydraulic piston is not operating, lubricating oil is supplied to the operating hydraulic circuit from the lubricating oil supply circuit.
Since the lubricating oil is almost always filled, there is no time lag when the switching valve is next opened and the hydraulic piston is operated.
（実施例）
以下、本考案を図面を参照しながら実施例にも
とづいてより具体的に説明する。(Examples) Hereinafter, the present invention will be described in more detail based on examples with reference to the drawings.
第１図は本実施例の構成を示す回転クラツチ部
の側断面図である。図において、１は作動油圧回
路、２は潤滑油供給回路、３はチエツク弁、４は
切換弁、５は油圧ピストン、６は摩擦板、７は相
手板、８は作動油の油圧源である。 FIG. 1 is a side sectional view of a rotating clutch portion showing the configuration of this embodiment. In the figure, 1 is a working hydraulic circuit, 2 is a lubricating oil supply circuit, 3 is a check valve, 4 is a switching valve, 5 is a hydraulic piston, 6 is a friction plate, 7 is a mating plate, and 8 is a hydraulic oil source. .
そして、固定部Ａに形成された従動軸支持孔９
には、回転軸である従動軸Ｃが挿着され、該従動
軸Ｃと上記固定部Ａとのシール部分Ｓには作動油
の油漏れを防止するシールリングＲが挿着されて
いる。上記固定部Ａ及び従動軸Ｃには作動油圧回
路１，１ａ，１ｂが形成され、上記両油圧回路１
ａと１ｂは両側各二列のシールリングＲで大気側
と略密閉状になるよう接続され、該作動油圧回路
１は従動軸Ｃと一体的に組立・形成された油圧シ
リンダＥ部分に連通するような構成になつてい
る。また、作動油圧回路１の油圧源８側には、作
動油をON−OFFする切換弁４が取着され、上記
油圧シリンダＥ部分には、摩擦板６と相手板７を
押圧する油圧ピストン５が挿着されている。 The driven shaft support hole 9 formed in the fixed part A
A driven shaft C, which is a rotating shaft, is inserted into the shaft, and a seal ring R is inserted into a seal portion S between the driven shaft C and the fixed portion A to prevent leakage of hydraulic oil. Working hydraulic circuits 1, 1a, 1b are formed in the fixed part A and the driven shaft C, and both the hydraulic circuits 1
a and 1b are connected to the atmosphere side by two rows of seal rings R on both sides so as to be substantially airtight, and the hydraulic pressure circuit 1 communicates with a hydraulic cylinder E part assembled and formed integrally with the driven shaft C. It is structured like this. Further, a switching valve 4 for turning the hydraulic oil ON and OFF is attached to the hydraulic pressure source 8 side of the hydraulic pressure circuit 1, and a hydraulic piston 5 for pressing the friction plate 6 and the mating plate 7 is attached to the hydraulic cylinder E section. is inserted.
そして、上記固定部Ａの作動油圧回路１ａの切
換弁４よりシール部分Ｓ側の一部には、該作動油
圧回路１ａに連通する潤滑油供給回路２が、略直
角に接続されている。上記潤滑油供給回路２の作
動油圧回路１ａとの接続部近傍にチエツク弁３が
取着され、さらに必要に応じ、潤滑油供給回路の
一部（油圧源Ｄ側）には油圧調圧弁（図示せず）
が取着されるか、あるいは同様の調圧機能（絞り
効果）を有する細孔（図示せず）を介して油圧源
Ｄと接続される。即ち、上記油圧源Ｄが冷却回路
のような低圧回路の場合はそのまま、また他の高
圧油圧回路の場合には上述の如き調圧弁等を介し
て、油圧源Ｄと上記潤滑油供給回路は接続され
る。尚、ここでいう低圧とは、回転クラツチの作
動圧以下の圧力をいう。 A lubricating oil supply circuit 2 communicating with the hydraulic pressure circuit 1a is connected at a substantially right angle to a portion of the hydraulic pressure circuit 1a of the fixed part A closer to the seal portion S than the switching valve 4. A check valve 3 is installed near the connection part of the lubricating oil supply circuit 2 with the working hydraulic circuit 1a, and if necessary, a hydraulic pressure regulating valve (Fig. (not shown)
or is connected to a hydraulic source D via a hole (not shown) having a similar pressure regulating function (throttle effect). That is, if the hydraulic source D is a low-pressure circuit such as a cooling circuit, the hydraulic source D and the lubricating oil supply circuit are connected as is, or if it is another high-pressure hydraulic circuit, the hydraulic source D and the lubricating oil supply circuit are connected via the above-mentioned pressure regulating valve or the like. be done. Note that the low pressure here refers to a pressure that is lower than the operating pressure of the rotary clutch.
しかして、油圧ピストン５に圧油（作動油）が
作用している際には、上記作動油圧回路１内には
作動油が存在するため、その一部が上記シールリ
ングＲ部分より漏れ、回転軸のシール部分Ｓを潤
滑する。かかる場合、上記潤滑油供給回路２には
チエツク弁３の働きにより油圧は逆流（流入）し
ない。 However, when pressure oil (hydraulic oil) is acting on the hydraulic piston 5, since the hydraulic oil is present in the hydraulic circuit 1, a part of it leaks from the seal ring R portion and rotates. Lubricate the sealing part S of the shaft. In such a case, the hydraulic pressure does not flow backward (inflow) into the lubricating oil supply circuit 2 due to the function of the check valve 3.
一方、油圧ピストン５に圧油（作動油）が作用
しない場合（油圧ピストン非作動時）には、上記
シールリングＲ部分からの漏れにより、作動油は
作動油圧回路１内から徐々になくなり、それに伴
い作動油圧回路内の圧力が低下するため、上記潤
滑油供給回路２のチエツク弁３が開き、作動油圧
回路１に該潤滑油供給回路２より低圧の圧油が潤
滑油として供給される。尚、この潤滑油の圧力
は、油圧調圧弁あるいは細孔の絞り効果により所
定の低圧になつているため、上記摩擦板６と相手
板７を離間させているスプリング１０に打ち勝つ
て圧接するほど油圧ピストン５を作動させること
はない。 On the other hand, when pressure oil (hydraulic oil) does not act on the hydraulic piston 5 (when the hydraulic piston is not in operation), the hydraulic oil gradually disappears from the hydraulic circuit 1 due to leakage from the seal ring R portion, and As a result, the pressure in the working hydraulic circuit decreases, so the check valve 3 of the lubricating oil supply circuit 2 opens, and low-pressure pressure oil is supplied from the lubricating oil supply circuit 2 to the working hydraulic circuit 1 as lubricating oil. The pressure of this lubricating oil is kept at a predetermined low pressure by the hydraulic pressure regulating valve or the throttling effect of the pores, so the hydraulic pressure is high enough to overcome the spring 10 separating the friction plate 6 and the mating plate 7 and bring them into pressure contact. Piston 5 is not operated.
さらにまた、次ぎに油圧ピストン５を作動させ
る場合には、作動油圧回路１には潤滑油供給回路
２により作動油が常にほぼ満たされているため、
クラツチ作動時にタイムラグが殆どなく、直ぐに
油圧ピストン５は作動する。 Furthermore, when the hydraulic piston 5 is to be operated next, since the hydraulic pressure circuit 1 is almost always filled with hydraulic oil by the lubricating oil supply circuit 2,
There is almost no time lag when the clutch is operated, and the hydraulic piston 5 operates immediately.
尚、本実施例では、油圧回路１ａ，１ｂは両側
各二列（複列）のシールリングＲで大気側と略密
閉状になるよう構成されているが、上記シールリ
ングＲは各一列であつてもよい。 In this embodiment, the hydraulic circuits 1a and 1b are configured to be substantially airtight with the atmosphere side with two rows (double rows) of seal rings R on both sides, but each of the seal rings R has one row. It's okay.
（考案の効果）
以上、説明のように、本考案によれば、回転軸
のシール部分に潤滑油が常に供給されるため、該
シール部分（シールリング等）が摩耗したり、回
転抵抗が増加するようなこともない。その結果、
回転クラツチのシール部分の耐用期間が著しく延
長され、振動、騒音も小さくなる。さらに、上述
のように作動油圧回路に作動油が常に満たされ、
クラツチ作動時にタイムラグが殆どないため、オ
ペレータの意思どおり直ちに、作業機械を操作す
ることができる。(Effects of the invention) As explained above, according to the invention, lubricating oil is constantly supplied to the seal part of the rotating shaft, which prevents the seal part (seal ring, etc.) from wearing out and increasing rotational resistance. There's nothing to do. the result,
The service life of the rotary clutch seal is significantly extended, and vibration and noise are also reduced. Furthermore, as mentioned above, the hydraulic circuit is always filled with hydraulic oil,
Since there is almost no time lag when the clutch is activated, the operator can immediately operate the work machine as desired.
第１図は本実施例の構成を示す回転クラツチ部
の側断面図、第２図は従来の油圧式回転クラツチ
の作動油圧回路を示す一部側面図である。
１……作動油圧回路、２……潤滑油供給回路、
３……チエツク弁、４……切換弁、５……油圧ピ
ストン、６……摩擦板、７……相手板。
FIG. 1 is a side cross-sectional view of a rotary clutch section showing the structure of this embodiment, and FIG. 2 is a partial side view showing an operating hydraulic circuit of a conventional hydraulic rotary clutch. 1... Working hydraulic circuit, 2... Lubricating oil supply circuit,
3...Check valve, 4...Switching valve, 5...Hydraulic piston, 6...Friction plate, 7...Mating plate.
Claims (1)
により回転を伝達する回転クラツチで、該油圧ピ
ストンを作動させるための作動油圧回路が固定部
から回転軸にわたつて形成され、該固定部と回転
軸の間に外部と隔壁するよう周設されたシール部
分を、上記作動油圧回路からの作動油を利用して
潤滑をおこなう回転クラツチのシール潤滑機構に
おいて、 上記作動油圧回路の、作動油の断続を行う切換
弁より油圧ピストン側の部分に、油圧ピストン作
動時に閉じ非作動時に開くチエツク弁を介して、
低圧油を供給する潤滑油供給回路を接続したこと
を特徴とする回転クラツチのシール潤滑機構。[Scope of Claim for Utility Model Registration] A rotary clutch that transmits rotation by press-contacting a friction plate and a mating plate with a hydraulic piston, in which an operating hydraulic circuit for operating the hydraulic piston is formed from a fixed part to a rotating shaft. In a seal lubrication mechanism for a rotary clutch that uses hydraulic oil from the hydraulic pressure circuit to lubricate a seal portion provided between the fixed portion and the rotating shaft so as to be partitioned from the outside, the hydraulic pressure is A check valve that closes when the hydraulic piston is in operation and opens when the hydraulic piston is not in operation is connected to the part of the circuit closer to the hydraulic piston than the switching valve that switches on and off the hydraulic oil.
A seal lubrication mechanism for a rotating clutch, characterized in that it is connected to a lubricant supply circuit that supplies low-pressure oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13196984U JPS6145635U (en) | 1984-08-29 | 1984-08-29 | Rotating clutch seal lubrication mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13196984U JPS6145635U (en) | 1984-08-29 | 1984-08-29 | Rotating clutch seal lubrication mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6145635U JPS6145635U (en) | 1986-03-26 |
| JPH0122979Y2 true JPH0122979Y2 (en) | 1989-07-13 |
Family
ID=30690537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13196984U Granted JPS6145635U (en) | 1984-08-29 | 1984-08-29 | Rotating clutch seal lubrication mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6145635U (en) |
-
1984
- 1984-08-29 JP JP13196984U patent/JPS6145635U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6145635U (en) | 1986-03-26 |
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