JPS624756Y2 - - Google Patents

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Publication number
JPS624756Y2
JPS624756Y2 JP1982047770U JP4777082U JPS624756Y2 JP S624756 Y2 JPS624756 Y2 JP S624756Y2 JP 1982047770 U JP1982047770 U JP 1982047770U JP 4777082 U JP4777082 U JP 4777082U JP S624756 Y2 JPS624756 Y2 JP S624756Y2
Authority
JP
Japan
Prior art keywords
gearbox
water
oil
bearing box
gear
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
JP1982047770U
Other languages
Japanese (ja)
Other versions
JPS58149649U (en
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 filed Critical
Priority to JP1982047770U priority Critical patent/JPS58149649U/en
Publication of JPS58149649U publication Critical patent/JPS58149649U/en
Application granted granted Critical
Publication of JPS624756Y2 publication Critical patent/JPS624756Y2/ja
Granted legal-status Critical Current

Links

Description

【考案の詳細な説明】 本考案はギヤーボツクスの構造に関するもので
ある。
[Detailed Description of the Invention] The present invention relates to the structure of a gearbox.

例えば、熱間圧延機の前後面に設置されている
ローラーテーブルは、圧延ロールの冷却水および
デスケーリング水が激しく飛散する環境下にあ
る。そしてデスケーリングによる硬いスケールを
含む水が、歯車軸受などローラー駆動部を内包す
るギヤーボツクス内に侵入するため、油浴式潤滑
法の場合には、ギヤーボツクス内の潤滑油を汚染
劣化させ歯車の寿命を著しく短かくする原因とな
つている。
For example, roller tables installed on the front and rear surfaces of a hot rolling mill are in an environment where rolling roll cooling water and descaling water are violently scattered. Then, water containing hard scale due to descaling enters the gearbox that houses the roller drive parts such as gear bearings, so in the case of oil bath lubrication, the lubricating oil in the gearbox becomes contaminated and deteriorates, causing the gears to deteriorate. This causes a significant shortening of lifespan.

このようなトラブルを回避するために採用され
ている循環給油式潤滑法においては、侵入した
水・スケールなどの異物を一旦外部タンクに戻
し、沈澱分離し、さらにフイルターで漏過した清
浄油を潤滑部に供給するため潤滑自体は良好に保
たれる。
In the circulating oil lubrication method adopted to avoid such troubles, foreign substances such as water and scale that have entered are returned to an external tank and separated by sedimentation, and then the leaked clean oil is filtered through a filter for lubrication. The lubrication itself is maintained well because it is supplied to the parts.

しかし循環給油のための設備費が高価であるだ
けでなく、タンク内で分離した水の抜取り、タン
ク内に沈澱したスケールなどの除去、フイルター
の洗浄など日常の管理にも多大の労力を要すると
いう欠点がある。
However, not only is the equipment cost for circulating oil supply expensive, but it also requires a great deal of effort in daily management, such as drawing out the separated water in the tank, removing scale that has settled in the tank, and cleaning the filter. There are drawbacks.

以下具体的に熱間圧延機の前後面に設置されて
いるローラーテーブルで、一般的に採用されてい
る油浴式潤滑法のギヤーボツクスを例にとつて説
明する。
The following will specifically explain a gearbox using an oil bath lubrication method, which is generally employed for roller tables installed on the front and rear surfaces of a hot rolling mill.

第1図は従来構造のギヤーボツクスを示す。1
は飛散するスケールなどを含む水で、デスケーリ
ングにおいては、スケールを多量に含み、エネル
ギーが極めて高く且無方向性である。スケールな
どを含む水1が、ギヤーボツクス2内に侵入する
のを防止するため、第1の水切りとして、ローラ
ー3の軸部突起15とギヤーボツクス2に取付け
られたカバー4を組合せたラビリンスにより、こ
こでスケールを含む水1を遮断する。
FIG. 1 shows a gearbox of conventional construction. 1
is water that contains scattered scale, etc. In descaling, water contains a large amount of scale, has extremely high energy, and is non-directional. In order to prevent water 1 containing scale etc. from entering the gear box 2, a labyrinth consisting of a shaft protrusion 15 of the roller 3 and a cover 4 attached to the gear box 2 is used as a first drainer. At this point, water 1 containing scale is shut off.

しかし、本例のようにローラー回転数が比較的
低く、ローラー3の軸部突起15の外径寸法が、
ガード5などの障害物のため大きくできない場合
には、遮断効果、遠心力による水切り効果は十分
に発揮できず相当量のスケールを含む水1は、最
終遮断部であるローラー3の軸部と一般的にゴム
で製作されているオイルシール6で構成される軸
封部に達する。したがつて硬いスケールなどの固
形異物によりオイルシール6およびローラー3の
軸が損傷および摩耗を受け、またオイルシール6
が水潤滑となつて材質劣化、摩耗を受け、さらに
ローラー3の軸が炭素鋼など水に対する耐食性が
弱い材料の場合には腐食を受け、一般的には3〜
4ケ月程度の短かい期間でシール性が失なわれ
る。
However, as in this example, the roller rotation speed is relatively low, and the outer diameter of the shaft protrusion 15 of the roller 3 is
If the size cannot be increased due to obstacles such as the guard 5, the blocking effect and the draining effect due to centrifugal force cannot be sufficiently exerted, and the water 1 containing a considerable amount of scale is separated from the shaft of the roller 3, which is the final blocking part, and the general It reaches the shaft sealing part, which is composed of an oil seal 6 made of rubber. Therefore, the shafts of the oil seal 6 and the roller 3 are damaged and worn by solid foreign matter such as hard scale, and the oil seal 6
is subjected to water lubrication, resulting in material deterioration and wear.Furthermore, if the shaft of the roller 3 is made of a material with weak corrosion resistance against water, such as carbon steel, it will be subject to corrosion.
The sealing properties are lost within a short period of about 4 months.

この結果スケールなどを含む水1は同部を貫通
してギヤーボツクス2内に侵入し、大部分はギヤ
ーボツクス2の内壁面に沿つて流下し、潤滑油7
に混入する。そして浮遊するスケールなどの固形
異物は歯車8の噛合い部に入つて、直接歯車8の
歯面を損傷、摩耗させる。また水は歯車の回転に
よる撹拌作用によつて潤滑油7と結合し、潤滑性
の乏しい乳化油を生成せしめ、これが歯車8を急
激に摩耗させる。
As a result, the water 1 containing scale and the like penetrates this part and enters the gearbox 2, and most of it flows down along the inner wall surface of the gearbox 2, and the lubricating oil 7
be mixed into the Floating solid foreign matter such as scale enters the meshing portion of the gear 8 and directly damages and wears the tooth surface of the gear 8. Furthermore, the water combines with the lubricating oil 7 due to the agitation effect caused by the rotation of the gear, producing emulsified oil with poor lubricity, which causes the gear 8 to rapidly wear out.

一方少量のスケールなどを含む水は、ローラー
3の軸に沿つて軸受箱9に向つて進行する。ギヤ
ーボツクス2と軸受箱9が極めて接近している場
合には、スケールを含む水は軸受箱9のオイルシ
ール10に達し、ここでも前述と同じ現象を発生
させ、軸受11の事故を引き起すことにもなる。
On the other hand, water containing a small amount of scale and the like advances toward the bearing box 9 along the axis of the roller 3. If the gear box 2 and the bearing box 9 are very close to each other, water containing scale will reach the oil seal 10 of the bearing box 9, causing the same phenomenon as described above and causing an accident with the bearing 11. It also becomes.

以上の損傷メカニズムから、スケールなどの異
物を含む飛散水環境下のギヤーボツクスでは、軸
とゴム製オイルシールを接触させることによる軸
封法は、オイルシールの形状・材質をどのように
変えても、オイルシールの損傷・摩耗および軸の
損傷・摩耗を避けることはできない。従つて歯車
などを、良好な潤滑状態に維持するためには、短
周期でのオイルシール交換、軸の補修が必要であ
り、長期間にわたるシール性保証は達成できな
い。
Based on the damage mechanism described above, for gearboxes in environments with splashing water containing foreign objects such as scale, the shaft sealing method by bringing the shaft into contact with a rubber oil seal is effective no matter how the shape or material of the oil seal is changed. , damage and wear of the oil seal and damage and wear of the shaft cannot be avoided. Therefore, in order to maintain gears and the like in a good lubricated state, it is necessary to replace the oil seal and repair the shaft at short intervals, and it is not possible to guarantee sealing performance over a long period of time.

本考案は以上の如き問題点を有利に解決するた
めなされたもので、その要旨とするところはギヤ
ーボツクス内の歯車と軸受箱間に、オイルシール
を介して駆動軸を囲むように仕切壁を固定配置
し、潤滑すべき歯車が入る室と軸受箱が入る室と
にギヤーボツクス内を区分し該歯車側の室に潤滑
油を充填し、軸受箱側の室底部に排水口を形成し
たことを特徴とするギヤーボツクスの構造にあ
る。
The present invention was developed to advantageously solve the above-mentioned problems, and its gist is to provide a partition wall between the gear in the gearbox and the bearing box so as to surround the drive shaft via an oil seal. The inside of the gearbox is divided into a chamber where the gears to be lubricated are placed and a chamber where the bearing box is placed, the chamber on the gear side is filled with lubricating oil, and a drainage port is formed at the bottom of the chamber on the bearing box side. The structure of the gear box is characterized by

即ち本考案は、飛散水環境下にあるギヤーボツ
クス内へのスケールなどを含む水の侵入はある程
度不可避と判断し、その侵入防止が最終的には、
潤滑油中にスケールを含む水が混入しなければ目
的は達せられるとの着目に基づいてなされた新ら
しいギヤーボツクスの構造である。本考案によれ
ば、従来法の欠点を抜本的に解消できるものであ
る。
In other words, the present invention determines that the intrusion of water containing scale etc. into the gear box in an environment of splashing water is unavoidable to some extent, and the ultimate goal of preventing this intrusion is to
This is a new gearbox structure based on the idea that the objective can be achieved as long as scale-containing water is not mixed into the lubricating oil. According to the present invention, the drawbacks of the conventional method can be fundamentally eliminated.

以下図面に基づいて本考案を説明する。 The present invention will be explained below based on the drawings.

第2図は第1図と同じ熱間圧延機の前後面ロー
ラーテーブル油浴式潤滑法のギヤーボツクスであ
る。第2図において飛散するスケールなどを含む
水1、ローラー3の軸部突起15とカバー4を組
合せたラビリンス、その寸法上の制約になつてい
るガード5は第1図と同じである。
FIG. 2 shows a gearbox of the same hot rolling mill as shown in FIG. 1, using the front and rear roller table oil bath lubrication method. In FIG. 2, the water 1 containing scattered scales, the labyrinth in which the shaft protrusion 15 of the roller 3 and the cover 4 are combined, and the guard 5 that limits its size are the same as in FIG.

ギヤーボツクス2は、歯車8と軸受箱9間に設
けた仕切下壁12と仕切上壁13によつてA,
B2室に分離されている。仕切下壁12はギヤー
ボツクス2の底部に一端を溶着され、駆動軸を囲
むように形成されている。そして、駆動軸との間
にはオイルシール10′が配置され潤滑油の流出
を防止している。
The gearbox 2 is constructed by a lower partition wall 12 and an upper partition wall 13 provided between the gear 8 and the bearing box 9.
It is separated into room B2. The lower partition wall 12 has one end welded to the bottom of the gear box 2 and is formed to surround the drive shaft. An oil seal 10' is arranged between the drive shaft and the drive shaft to prevent lubricating oil from flowing out.

仕切上壁13はギヤーボツクス2の天井部から
駆動軸をまたぐように配置されてある。しかし
て、潤滑すべき歯車8が入る室Aのみに潤滑油7
が充填される。仕切上壁13は歯車8の回転によ
り発生する飛沫油、または循環給油式潤滑法で歯
車8に噴射された油の飛沫油が、軸受箱9の設置
されている側の室Bへ流出するのを防ぐためのも
のであり、仕切下壁12に近接して設置されてい
る。仕切上壁13と仕切下壁12によつて2室に
分離された室B側には、ギヤーボツクス底部に排
水口14が設けてあり、侵入した水・スケール等
は該排水口14から外部に自然排出され、潤滑油
を汚染しない構造となつている。
The partition upper wall 13 is arranged from the ceiling of the gear box 2 so as to straddle the drive shaft. Therefore, the lubricating oil 7 is placed only in the chamber A where the gear 8 to be lubricated enters.
is filled. The partition upper wall 13 prevents splashed oil generated by the rotation of the gear 8 or oil sprayed onto the gear 8 using the circulating oil lubrication method from flowing out into the chamber B on the side where the bearing box 9 is installed. It is installed close to the partition lower wall 12 to prevent this. On the side of chamber B, which is separated into two rooms by the upper partition wall 13 and the lower partition wall 12, a drain port 14 is provided at the bottom of the gear box, and water, scale, etc. that have entered are drained from the drain port 14 to the outside. The structure is such that it is naturally discharged and does not contaminate the lubricating oil.

本考案は以上に述べた構造のギヤーボツクスで
あり、ローラー3の軸部がギヤーボツクス2を貫
通する部分には、オイルシールを取付けず、若干
の水遮断効果があり加工精度で特に困難のない程
度のスキマを設ける。さらにギヤーボツクス2の
内壁面と軸受箱9の外面との距離lは軸をつたわ
る水を切る為に、この部分の軸径の0.3倍以上と
するのが好ましい。軸受箱9内にはオイルシール
10、軸受11があり、軸受11に給脂されたグ
リースは、オイルシール10を経由して軸受箱9
外に排出されるが、仕切壁によつて潤滑油7内に
混入することがない。
The present invention is a gearbox with the above-mentioned structure, and no oil seal is attached to the part where the shaft of the roller 3 passes through the gearbox 2, which has a slight water-blocking effect and does not pose any particular difficulty in machining accuracy. Provide some clearance. Further, the distance l between the inner wall surface of the gear box 2 and the outer surface of the bearing box 9 is preferably set to 0.3 times or more the shaft diameter of this portion in order to cut off water flowing through the shaft. There are an oil seal 10 and a bearing 11 inside the bearing box 9, and the grease supplied to the bearing 11 passes through the oil seal 10 to the bearing box 9.
Although it is discharged outside, the partition wall prevents it from getting mixed into the lubricating oil 7.

次に本考案ギヤーボツクス構造による操業例を
挙げる。
Next, we will give an example of operation using the gearbox structure of the present invention.

熱間圧延機の前後面ローラーテーブルのギヤー
ボツクス構造を第2図に示す構造とし、長期間使
用した結果、相当量のスケール等を含む水が、ロ
ーラー3の軸部がギヤーボツクス2を貫通する部
分より侵入する。しかしながらほとんどのスケー
ルなどを含む水は、ギヤーボツクス2の内壁面で
流下し残部はローラー3の軸に沿つて極めてゆる
やかに軸受箱9側に進行するが、ほぼ軸受箱9と
の中間点付近で進行が停止する。万一軸受箱9ま
で達してもオイルシール10からの排出グリース
のシール作用により軸受11内への侵入は阻止さ
れた。
The gearbox structure of the front and rear roller tables of a hot rolling mill is shown in Figure 2, and as a result of long-term use, a considerable amount of water containing scale etc. penetrates the gearbox 2 through the shaft of the roller 3. Penetrates from parts. However, most of the water containing scale flows down on the inner wall surface of the gear box 2, and the remaining water moves very gently towards the bearing box 9 along the axis of the roller 3, but at approximately the midpoint with the bearing box 9. Progress stops. Even if the grease were to reach the bearing box 9, the sealing action of the discharged grease from the oil seal 10 would prevent it from entering the bearing 11.

ギヤーボツクス内壁面に沿つて流下およびロー
ラー3の軸に沿つて進み途中で落下したスケール
などを含む水1は、ギヤーボツクス2の底部に設
けた排水口14より自然に外部へ排出されギヤー
ボツクス内に滞溜しなかつた。一方A室側の潤滑
油7のB室側への流出も全く認められなかつた。
The water 1 containing scales, etc. that flows down along the inner wall surface of the gearbox and along the axis of the roller 3 and falls on the way, is naturally drained outside from the drain port 14 provided at the bottom of the gearbox 2 and is discharged inside the gearbox. It didn't accumulate. On the other hand, no leakage of the lubricating oil 7 from the A room side to the B room side was observed.

上記構造説明から明らかなように本考案は、高
精度な部品、特殊なシール材料を必要としないか
ら設備費が安価であり、旦、摺動構造でないため
摩耗などに起因する経年的性能劣化がまつたくな
いものであるから、保全のための費用労力は一切
必要としないで目的を達せられるものであり、本
考案の奏する効果は極めて大である。
As is clear from the above structural description, the present invention does not require high-precision parts or special sealing materials, so equipment costs are low, and since it does not have a sliding structure, performance deterioration over time due to wear etc. Since it is a material that should not be damaged, the purpose can be achieved without requiring any cost and effort for maintenance, and the effects of the present invention are extremely large.

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

第1図は従来の油浴式潤滑法のギヤーボツクス
構造を示す側断面説明図、第2図は本考案の実施
例による油浴式潤滑法のギヤーボツクス構造を示
す側断面説明図である。 1……スケールを含む水、2……ギヤーボツク
ス、3……ローラー、4……カバー、5……ガー
ド、6,10,10′……オイルシール、7……
潤滑油、8……歯車、9……軸受箱、11……軸
受、12……仕切下壁、13……仕切上壁、14
……排水口、15……軸部突起。
FIG. 1 is a side sectional explanatory view showing a gearbox structure for a conventional oil bath lubrication method, and FIG. 2 is a side sectional explanatory view showing a gearbox structure for an oil bath lubrication method according to an embodiment of the present invention. 1... Water containing scale, 2... Gear box, 3... Roller, 4... Cover, 5... Guard, 6, 10, 10'... Oil seal, 7...
Lubricating oil, 8... Gear, 9... Bearing box, 11... Bearing, 12... Partition lower wall, 13... Partition upper wall, 14
... Drain port, 15 ... Shaft protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ギヤーボツクス内の歯車と軸受箱間に、オイル
シールを介して駆動軸を囲むように仕切壁を固定
配置し、潤滑すべき歯車が入る室と軸受箱が入る
室とにギヤーボツクス内を区分し該歯車側の室に
潤滑油を充填し軸受箱側の室底部に排水口を形成
したことを特徴とするギヤーボツクスの構造。
A partition wall is fixedly arranged between the gears and the bearing box in the gearbox so as to surround the drive shaft via an oil seal, and the inside of the gearbox is divided into a chamber where the gears to be lubricated are placed and a chamber where the bearing box is placed. A gearbox structure characterized in that a chamber on the gear side is filled with lubricating oil and a drain port is formed at the bottom of the chamber on the bearing box side.
JP1982047770U 1982-04-01 1982-04-01 Gearbox structure Granted JPS58149649U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982047770U JPS58149649U (en) 1982-04-01 1982-04-01 Gearbox structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982047770U JPS58149649U (en) 1982-04-01 1982-04-01 Gearbox structure

Publications (2)

Publication Number Publication Date
JPS58149649U JPS58149649U (en) 1983-10-07
JPS624756Y2 true JPS624756Y2 (en) 1987-02-03

Family

ID=30058721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982047770U Granted JPS58149649U (en) 1982-04-01 1982-04-01 Gearbox structure

Country Status (1)

Country Link
JP (1) JPS58149649U (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5724450B2 (en) * 2011-02-24 2015-05-27 Jfeスチール株式会社 Descaler for measuring roll bearing in hot rolled steel sheet production line

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216491B2 (en) * 1972-06-13 1977-05-10

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216491U (en) * 1975-07-25 1977-02-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216491B2 (en) * 1972-06-13 1977-05-10

Also Published As

Publication number Publication date
JPS58149649U (en) 1983-10-07

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